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return; var _arr = []; var _n = true; var _d = false; var _s, _e; try { for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i[\"return\"] != null) _i[\"return\"](); } finally { if (_d) throw _e; } } return _arr; }\n\nfunction _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }\n\nfunction _toArray(arr) { return _arrayWithHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableRest(); }\n\nfunction _nonIterableRest() { throw new TypeError(\"Invalid attempt to destructure non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\"); }\n\nfunction _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }\n\nfunction _wrapNativeSuper(Class) { var _cache = typeof Map === \"function\" ? new Map() : undefined; _wrapNativeSuper = function _wrapNativeSuper(Class) { if (Class === null || !_isNativeFunction(Class)) return Class; if (typeof Class !== \"function\") { throw new TypeError(\"Super expression must either be null or a function\"); } if (typeof _cache !== \"undefined\") { if (_cache.has(Class)) return _cache.get(Class); _cache.set(Class, Wrapper); } function Wrapper() { return _construct(Class, arguments, _getPrototypeOf(this).constructor); } Wrapper.prototype = Object.create(Class.prototype, { constructor: { value: Wrapper, enumerable: false, writable: true, configurable: true } }); return _setPrototypeOf(Wrapper, Class); }; return _wrapNativeSuper(Class); }\n\nfunction _isNativeFunction(fn) { return Function.toString.call(fn).indexOf(\"[native code]\") !== -1; }\n\nfunction _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== \"undefined\" && o[Symbol.iterator] || o[\"@@iterator\"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === \"number\") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e2) { throw _e2; }, f: F }; } throw new TypeError(\"Invalid attempt to iterate non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\"); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e3) { didErr = true; err = _e3; }, f: function f() { try { if (!normalCompletion && it.return != null) it.return(); } finally { if (didErr) throw err; } } }; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function\"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); Object.defineProperty(subClass, \"prototype\", { writable: false }); if (superClass) _setPrototypeOf(subClass, superClass); }\n\nfunction _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }\n\nfunction _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === \"object\" || typeof call === \"function\")) { return call; } else if (call !== void 0) { throw new TypeError(\"Derived constructors may only return object or undefined\"); } return _assertThisInitialized(self); }\n\nfunction _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return self; }\n\nfunction _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }\n\nfunction _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }\n\nfunction _nonIterableSpread() { throw new TypeError(\"Invalid attempt to spread non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\"); }\n\nfunction _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === \"string\") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === \"Object\" && o.constructor) n = o.constructor.name; if (n === \"Map\" || n === \"Set\") return Array.from(o); if (n === \"Arguments\" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }\n\nfunction _iterableToArray(iter) { if (typeof Symbol !== \"undefined\" && iter[Symbol.iterator] != null || iter[\"@@iterator\"] != null) return Array.from(iter); }\n\nfunction _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }\n\nfunction _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass2(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, \"prototype\", { writable: false }); return Constructor; }\n\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; return _typeof = \"function\" == typeof Symbol && \"symbol\" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && \"function\" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }, _typeof(obj); }\n\nfunction _construct(Parent, args, Class) { if (_isNativeReflectConstruct()) { _construct = Reflect.construct; } else { _construct = function _construct(Parent, args, Class) { var a = [null]; a.push.apply(a, args); var Constructor = Function.bind.apply(Parent, a); var instance = new Constructor(); if (Class) _setPrototypeOf(instance, Class.prototype); return instance; }; } return _construct.apply(null, arguments); }\n\nfunction _isNativeReflectConstruct() { if (typeof Reflect === \"undefined\" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === \"function\") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }\n\nfunction _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }\n\n/**\n * @license Angular v11.0.2\n * (c) 2010-2020 Google LLC. https://angular.io/\n * License: MIT\n */\nimport { Subject, Subscription, Observable, merge as merge$1 } from 'rxjs';\nimport { share } from 'rxjs/operators';\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Convince closure compiler that the wrapped function has no side-effects.\n *\n * Closure compiler always assumes that `toString` has no side-effects. We use this quirk to\n * allow us to execute a function but have closure compiler mark the call as no-side-effects.\n * It is important that the return value for the `noSideEffects` function be assigned\n * to something which is retained otherwise the call to `noSideEffects` will be removed by closure\n * compiler.\n */\n\nfunction noSideEffects(fn) {\n  return {\n    toString: fn\n  }.toString();\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ANNOTATIONS = '__annotations__';\nvar PARAMETERS = '__parameters__';\nvar PROP_METADATA = '__prop__metadata__';\n/**\n * @suppress {globalThis}\n */\n\nfunction makeDecorator(name, props, parentClass, additionalProcessing, typeFn) {\n  return noSideEffects(function () {\n    var metaCtor = makeMetadataCtor(props);\n\n    function DecoratorFactory() {\n      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n        args[_key] = arguments[_key];\n      }\n\n      if (this instanceof DecoratorFactory) {\n        metaCtor.call.apply(metaCtor, [this].concat(args));\n        return this;\n      }\n\n      var annotationInstance = _construct(DecoratorFactory, args);\n\n      return function TypeDecorator(cls) {\n        if (typeFn) typeFn.apply(void 0, [cls].concat(args)); // Use of Object.defineProperty is important since it creates non-enumerable property which\n        // prevents the property is copied during subclassing.\n\n        var annotations = cls.hasOwnProperty(ANNOTATIONS) ? cls[ANNOTATIONS] : Object.defineProperty(cls, ANNOTATIONS, {\n          value: []\n        })[ANNOTATIONS];\n        annotations.push(annotationInstance);\n        if (additionalProcessing) additionalProcessing(cls);\n        return cls;\n      };\n    }\n\n    if (parentClass) {\n      DecoratorFactory.prototype = Object.create(parentClass.prototype);\n    }\n\n    DecoratorFactory.prototype.ngMetadataName = name;\n    DecoratorFactory.annotationCls = DecoratorFactory;\n    return DecoratorFactory;\n  });\n}\n\nfunction makeMetadataCtor(props) {\n  return function ctor() {\n    if (props) {\n      var values = props.apply(void 0, arguments);\n\n      for (var propName in values) {\n        this[propName] = values[propName];\n      }\n    }\n  };\n}\n\nfunction makeParamDecorator(name, props, parentClass) {\n  return noSideEffects(function () {\n    var metaCtor = makeMetadataCtor(props);\n\n    function ParamDecoratorFactory() {\n      for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n        args[_key2] = arguments[_key2];\n      }\n\n      if (this instanceof ParamDecoratorFactory) {\n        metaCtor.apply(this, args);\n        return this;\n      }\n\n      var annotationInstance = _construct(ParamDecoratorFactory, args);\n\n      ParamDecorator.annotation = annotationInstance;\n      return ParamDecorator;\n\n      function ParamDecorator(cls, unusedKey, index) {\n        // Use of Object.defineProperty is important since it creates non-enumerable property which\n        // prevents the property is copied during subclassing.\n        var parameters = cls.hasOwnProperty(PARAMETERS) ? cls[PARAMETERS] : Object.defineProperty(cls, PARAMETERS, {\n          value: []\n        })[PARAMETERS]; // there might be gaps if some in between parameters do not have annotations.\n        // we pad with nulls.\n\n        while (parameters.length <= index) {\n          parameters.push(null);\n        }\n\n        (parameters[index] = parameters[index] || []).push(annotationInstance);\n        return cls;\n      }\n    }\n\n    if (parentClass) {\n      ParamDecoratorFactory.prototype = Object.create(parentClass.prototype);\n    }\n\n    ParamDecoratorFactory.prototype.ngMetadataName = name;\n    ParamDecoratorFactory.annotationCls = ParamDecoratorFactory;\n    return ParamDecoratorFactory;\n  });\n}\n\nfunction makePropDecorator(name, props, parentClass, additionalProcessing) {\n  return noSideEffects(function () {\n    var metaCtor = makeMetadataCtor(props);\n\n    function PropDecoratorFactory() {\n      for (var _len3 = arguments.length, args = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {\n        args[_key3] = arguments[_key3];\n      }\n\n      if (this instanceof PropDecoratorFactory) {\n        metaCtor.apply(this, args);\n        return this;\n      }\n\n      var decoratorInstance = _construct(PropDecoratorFactory, args);\n\n      function PropDecorator(target, name) {\n        var constructor = target.constructor; // Use of Object.defineProperty is important because it creates a non-enumerable property\n        // which prevents the property from being copied during subclassing.\n\n        var meta = constructor.hasOwnProperty(PROP_METADATA) ? constructor[PROP_METADATA] : Object.defineProperty(constructor, PROP_METADATA, {\n          value: {}\n        })[PROP_METADATA];\n        meta[name] = meta.hasOwnProperty(name) && meta[name] || [];\n        meta[name].unshift(decoratorInstance);\n        if (additionalProcessing) additionalProcessing.apply(void 0, [target, name].concat(args));\n      }\n\n      return PropDecorator;\n    }\n\n    if (parentClass) {\n      PropDecoratorFactory.prototype = Object.create(parentClass.prototype);\n    }\n\n    PropDecoratorFactory.prototype.ngMetadataName = name;\n    PropDecoratorFactory.annotationCls = PropDecoratorFactory;\n    return PropDecoratorFactory;\n  });\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ɵ0 = function ɵ0(token) {\n  return {\n    token: token\n  };\n};\n/**\n * Inject decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\n\nvar Inject = makeParamDecorator('Inject', ɵ0);\n/**\n * Optional decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\nvar Optional = makeParamDecorator('Optional');\n/**\n * Self decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\nvar Self = makeParamDecorator('Self');\n/**\n * `SkipSelf` decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\nvar SkipSelf = makeParamDecorator('SkipSelf');\n/**\n * Host decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\nvar Host = makeParamDecorator('Host');\n\nvar ɵ1 = function ɵ1(attributeName) {\n  return {\n    attributeName: attributeName\n  };\n};\n/**\n * Attribute decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\n\nvar Attribute = makeParamDecorator('Attribute', ɵ1);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nfunction stringify(token) {\n  if (typeof token === 'string') {\n    return token;\n  }\n\n  if (Array.isArray(token)) {\n    return '[' + token.map(stringify).join(', ') + ']';\n  }\n\n  if (token == null) {\n    return '' + token;\n  }\n\n  if (token.overriddenName) {\n    return \"\".concat(token.overriddenName);\n  }\n\n  if (token.name) {\n    return \"\".concat(token.name);\n  }\n\n  var res = token.toString();\n\n  if (res == null) {\n    return '' + res;\n  }\n\n  var newLineIndex = res.indexOf('\\n');\n  return newLineIndex === -1 ? res : res.substring(0, newLineIndex);\n}\n/**\n * Concatenates two strings with separator, allocating new strings only when necessary.\n *\n * @param before before string.\n * @param separator separator string.\n * @param after after string.\n * @returns concatenated string.\n */\n\n\nfunction concatStringsWithSpace(before, after) {\n  return before == null || before === '' ? after === null ? '' : after : after == null || after === '' ? before : before + ' ' + after;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction assertNumber(actual, msg) {\n  if (!(typeof actual === 'number')) {\n    throwError(msg, _typeof(actual), 'number', '===');\n  }\n}\n\nfunction assertNumberInRange(actual, minInclusive, maxInclusive) {\n  assertNumber(actual, 'Expected a number');\n  assertLessThanOrEqual(actual, maxInclusive, 'Expected number to be less than or equal to');\n  assertGreaterThanOrEqual(actual, minInclusive, 'Expected number to be greater than or equal to');\n}\n\nfunction assertString(actual, msg) {\n  if (!(typeof actual === 'string')) {\n    throwError(msg, actual === null ? 'null' : _typeof(actual), 'string', '===');\n  }\n}\n\nfunction assertEqual(actual, expected, msg) {\n  if (!(actual == expected)) {\n    throwError(msg, actual, expected, '==');\n  }\n}\n\nfunction assertNotEqual(actual, expected, msg) {\n  if (!(actual != expected)) {\n    throwError(msg, actual, expected, '!=');\n  }\n}\n\nfunction assertSame(actual, expected, msg) {\n  if (!(actual === expected)) {\n    throwError(msg, actual, expected, '===');\n  }\n}\n\nfunction assertNotSame(actual, expected, msg) {\n  if (!(actual !== expected)) {\n    throwError(msg, actual, expected, '!==');\n  }\n}\n\nfunction assertLessThan(actual, expected, msg) {\n  if (!(actual < expected)) {\n    throwError(msg, actual, expected, '<');\n  }\n}\n\nfunction assertLessThanOrEqual(actual, expected, msg) {\n  if (!(actual <= expected)) {\n    throwError(msg, actual, expected, '<=');\n  }\n}\n\nfunction assertGreaterThan(actual, expected, msg) {\n  if (!(actual > expected)) {\n    throwError(msg, actual, expected, '>');\n  }\n}\n\nfunction assertGreaterThanOrEqual(actual, expected, msg) {\n  if (!(actual >= expected)) {\n    throwError(msg, actual, expected, '>=');\n  }\n}\n\nfunction assertNotDefined(actual, msg) {\n  if (actual != null) {\n    throwError(msg, actual, null, '==');\n  }\n}\n\nfunction assertDefined(actual, msg) {\n  if (actual == null) {\n    throwError(msg, actual, null, '!=');\n  }\n}\n\nfunction throwError(msg, actual, expected, comparison) {\n  throw new Error(\"ASSERTION ERROR: \".concat(msg) + (comparison == null ? '' : \" [Expected=> \".concat(expected, \" \").concat(comparison, \" \").concat(actual, \" <=Actual]\")));\n}\n\nfunction assertDomNode(node) {\n  // If we're in a worker, `Node` will not be defined.\n  if (!(typeof Node !== 'undefined' && node instanceof Node) && !(_typeof(node) === 'object' && node != null && node.constructor.name === 'WebWorkerRenderNode')) {\n    throwError(\"The provided value must be an instance of a DOM Node but got \".concat(stringify(node)));\n  }\n}\n\nfunction assertIndexInRange(arr, index) {\n  assertDefined(arr, 'Array must be defined.');\n  var maxLen = arr.length;\n\n  if (index < 0 || index >= maxLen) {\n    throwError(\"Index expected to be less than \".concat(maxLen, \" but got \").concat(index));\n  }\n}\n\nfunction assertOneOf(value) {\n  for (var _len4 = arguments.length, validValues = new Array(_len4 > 1 ? _len4 - 1 : 0), _key4 = 1; _key4 < _len4; _key4++) {\n    validValues[_key4 - 1] = arguments[_key4];\n  }\n\n  if (validValues.indexOf(value) !== -1) return true;\n  throwError(\"Expected value to be one of \".concat(JSON.stringify(validValues), \" but was \").concat(JSON.stringify(value), \".\"));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction getClosureSafeProperty(objWithPropertyToExtract) {\n  for (var key in objWithPropertyToExtract) {\n    if (objWithPropertyToExtract[key] === getClosureSafeProperty) {\n      return key;\n    }\n  }\n\n  throw Error('Could not find renamed property on target object.');\n}\n/**\n * Sets properties on a target object from a source object, but only if\n * the property doesn't already exist on the target object.\n * @param target The target to set properties on\n * @param source The source of the property keys and values to set\n */\n\n\nfunction fillProperties(target, source) {\n  for (var key in source) {\n    if (source.hasOwnProperty(key) && !target.hasOwnProperty(key)) {\n      target[key] = source[key];\n    }\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Construct an `InjectableDef` which defines how a token will be constructed by the DI system, and\n * in which injectors (if any) it will be available.\n *\n * This should be assigned to a static `ɵprov` field on a type, which will then be an\n * `InjectableType`.\n *\n * Options:\n * * `providedIn` determines which injectors will include the injectable, by either associating it\n *   with an `@NgModule` or other `InjectorType`, or by specifying that this injectable should be\n *   provided in the `'root'` injector, which will be the application-level injector in most apps.\n * * `factory` gives the zero argument function which will create an instance of the injectable.\n *   The factory can call `inject` to access the `Injector` and request injection of dependencies.\n *\n * @codeGenApi\n * @publicApi This instruction has been emitted by ViewEngine for some time and is deployed to npm.\n */\n\n\nfunction ɵɵdefineInjectable(opts) {\n  return {\n    token: opts.token,\n    providedIn: opts.providedIn || null,\n    factory: opts.factory,\n    value: undefined\n  };\n}\n/**\n * @deprecated in v8, delete after v10. This API should be used only be generated code, and that\n * code should now use ɵɵdefineInjectable instead.\n * @publicApi\n */\n\n\nvar defineInjectable = ɵɵdefineInjectable;\n/**\n * Construct an `InjectorDef` which configures an injector.\n *\n * This should be assigned to a static injector def (`ɵinj`) field on a type, which will then be an\n * `InjectorType`.\n *\n * Options:\n *\n * * `factory`: an `InjectorType` is an instantiable type, so a zero argument `factory` function to\n *   create the type must be provided. If that factory function needs to inject arguments, it can\n *   use the `inject` function.\n * * `providers`: an optional array of providers to add to the injector. Each provider must\n *   either have a factory or point to a type which has a `ɵprov` static property (the\n *   type must be an `InjectableType`).\n * * `imports`: an optional array of imports of other `InjectorType`s or `InjectorTypeWithModule`s\n *   whose providers will also be added to the injector. Locally provided types will override\n *   providers from imports.\n *\n * @codeGenApi\n */\n\nfunction ɵɵdefineInjector(options) {\n  return {\n    factory: options.factory,\n    providers: options.providers || [],\n    imports: options.imports || []\n  };\n}\n/**\n * Read the injectable def (`ɵprov`) for `type` in a way which is immune to accidentally reading\n * inherited value.\n *\n * @param type A type which may have its own (non-inherited) `ɵprov`.\n */\n\n\nfunction getInjectableDef(type) {\n  return getOwnDefinition(type, NG_PROV_DEF) || getOwnDefinition(type, NG_INJECTABLE_DEF);\n}\n/**\n * Return definition only if it is defined directly on `type` and is not inherited from a base\n * class of `type`.\n */\n\n\nfunction getOwnDefinition(type, field) {\n  return type.hasOwnProperty(field) ? type[field] : null;\n}\n/**\n * Read the injectable def (`ɵprov`) for `type` or read the `ɵprov` from one of its ancestors.\n *\n * @param type A type which may have `ɵprov`, via inheritance.\n *\n * @deprecated Will be removed in a future version of Angular, where an error will occur in the\n *     scenario if we find the `ɵprov` on an ancestor only.\n */\n\n\nfunction getInheritedInjectableDef(type) {\n  var def = type && (type[NG_PROV_DEF] || type[NG_INJECTABLE_DEF]);\n\n  if (def) {\n    var typeName = getTypeName(type); // TODO(FW-1307): Re-add ngDevMode when closure can handle it\n    // ngDevMode &&\n\n    console.warn(\"DEPRECATED: DI is instantiating a token \\\"\".concat(typeName, \"\\\" that inherits its @Injectable decorator but does not provide one itself.\\n\") + \"This will become an error in a future version of Angular. Please add @Injectable() to the \\\"\".concat(typeName, \"\\\" class.\"));\n    return def;\n  } else {\n    return null;\n  }\n}\n/** Gets the name of a type, accounting for some cross-browser differences. */\n\n\nfunction getTypeName(type) {\n  // `Function.prototype.name` behaves differently between IE and other browsers. In most browsers\n  // it'll always return the name of the function itself, no matter how many other functions it\n  // inherits from. On IE the function doesn't have its own `name` property, but it takes it from\n  // the lowest level in the prototype chain. E.g. if we have `class Foo extends Parent` most\n  // browsers will evaluate `Foo.name` to `Foo` while IE will return `Parent`. We work around\n  // the issue by converting the function to a string and parsing its name out that way via a regex.\n  if (type.hasOwnProperty('name')) {\n    return type.name;\n  }\n\n  var match = ('' + type).match(/^function\\s*([^\\s(]+)/);\n  return match === null ? '' : match[1];\n}\n/**\n * Read the injector def type in a way which is immune to accidentally reading inherited value.\n *\n * @param type type which may have an injector def (`ɵinj`)\n */\n\n\nfunction getInjectorDef(type) {\n  return type && (type.hasOwnProperty(NG_INJ_DEF) || type.hasOwnProperty(NG_INJECTOR_DEF)) ? type[NG_INJ_DEF] : null;\n}\n\nvar NG_PROV_DEF = getClosureSafeProperty({\n  ɵprov: getClosureSafeProperty\n});\nvar NG_INJ_DEF = getClosureSafeProperty({\n  ɵinj: getClosureSafeProperty\n}); // We need to keep these around so we can read off old defs if new defs are unavailable\n\nvar NG_INJECTABLE_DEF = getClosureSafeProperty({\n  ngInjectableDef: getClosureSafeProperty\n});\nvar NG_INJECTOR_DEF = getClosureSafeProperty({\n  ngInjectorDef: getClosureSafeProperty\n});\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Creates a token that can be used in a DI Provider.\n *\n * Use an `InjectionToken` whenever the type you are injecting is not reified (does not have a\n * runtime representation) such as when injecting an interface, callable type, array or\n * parameterized type.\n *\n * `InjectionToken` is parameterized on `T` which is the type of object which will be returned by\n * the `Injector`. This provides additional level of type safety.\n *\n * ```\n * interface MyInterface {...}\n * var myInterface = injector.get(new InjectionToken<MyInterface>('SomeToken'));\n * // myInterface is inferred to be MyInterface.\n * ```\n *\n * When creating an `InjectionToken`, you can optionally specify a factory function which returns\n * (possibly by creating) a default value of the parameterized type `T`. This sets up the\n * `InjectionToken` using this factory as a provider as if it was defined explicitly in the\n * application's root injector. If the factory function, which takes zero arguments, needs to inject\n * dependencies, it can do so using the `inject` function. See below for an example.\n *\n * Additionally, if a `factory` is specified you can also specify the `providedIn` option, which\n * overrides the above behavior and marks the token as belonging to a particular `@NgModule`. As\n * mentioned above, `'root'` is the default value for `providedIn`.\n *\n * @usageNotes\n * ### Basic Example\n *\n * ### Plain InjectionToken\n *\n * {@example core/di/ts/injector_spec.ts region='InjectionToken'}\n *\n * ### Tree-shakable InjectionToken\n *\n * {@example core/di/ts/injector_spec.ts region='ShakableInjectionToken'}\n *\n *\n * @publicApi\n */\n\nvar InjectionToken = /*#__PURE__*/function () {\n  function InjectionToken(_desc, options) {\n    _classCallCheck(this, InjectionToken);\n\n    this._desc = _desc;\n    /** @internal */\n\n    this.ngMetadataName = 'InjectionToken';\n    this.ɵprov = undefined;\n\n    if (typeof options == 'number') {\n      (typeof ngDevMode === 'undefined' || ngDevMode) && assertLessThan(options, 0, 'Only negative numbers are supported here'); // This is a special hack to assign __NG_ELEMENT_ID__ to this instance.\n      // See `InjectorMarkers`\n\n      this.__NG_ELEMENT_ID__ = options;\n    } else if (options !== undefined) {\n      this.ɵprov = ɵɵdefineInjectable({\n        token: this,\n        providedIn: options.providedIn || 'root',\n        factory: options.factory\n      });\n    }\n  }\n\n  _createClass2(InjectionToken, [{\n    key: \"toString\",\n    value: function toString() {\n      return \"InjectionToken \".concat(this._desc);\n    }\n  }]);\n\n  return InjectionToken;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A DI token that you can use to create a virtual [provider](guide/glossary#provider)\n * that will populate the `entryComponents` field of components and NgModules\n * based on its `useValue` property value.\n * All components that are referenced in the `useValue` value (either directly\n * or in a nested array or map) are added to the `entryComponents` property.\n *\n * @usageNotes\n *\n * The following example shows how the router can populate the `entryComponents`\n * field of an NgModule based on a router configuration that refers\n * to components.\n *\n * ```typescript\n * // helper function inside the router\n * function provideRoutes(routes) {\n *   return [\n *     {provide: ROUTES, useValue: routes},\n *     {provide: ANALYZE_FOR_ENTRY_COMPONENTS, useValue: routes, multi: true}\n *   ];\n * }\n *\n * // user code\n * let routes = [\n *   {path: '/root', component: RootComp},\n *   {path: '/teams', component: TeamsComp}\n * ];\n *\n * @NgModule({\n *   providers: [provideRoutes(routes)]\n * })\n * class ModuleWithRoutes {}\n * ```\n *\n * @publicApi\n * @deprecated Since 9.0.0. With Ivy, this property is no longer necessary.\n */\n\n\nvar ANALYZE_FOR_ENTRY_COMPONENTS = new InjectionToken('AnalyzeForEntryComponents');\n/**\n * Base class for query metadata.\n *\n * @see `ContentChildren`.\n * @see `ContentChild`.\n * @see `ViewChildren`.\n * @see `ViewChild`.\n *\n * @publicApi\n */\n\nvar Query = /*#__PURE__*/_createClass2(function Query() {\n  _classCallCheck(this, Query);\n});\n\nvar ɵ0$1 = function ɵ0$1(selector) {\n  var data = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n  return Object.assign({\n    selector: selector,\n    first: false,\n    isViewQuery: false,\n    descendants: false\n  }, data);\n};\n/**\n * ContentChildren decorator and metadata.\n *\n *\n * @Annotation\n * @publicApi\n */\n\n\nvar ContentChildren = makePropDecorator('ContentChildren', ɵ0$1, Query);\n\nvar ɵ1$1 = function ɵ1$1(selector) {\n  var data = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n  return Object.assign({\n    selector: selector,\n    first: true,\n    isViewQuery: false,\n    descendants: true\n  }, data);\n};\n/**\n * ContentChild decorator and metadata.\n *\n *\n * @Annotation\n *\n * @publicApi\n */\n\n\nvar ContentChild = makePropDecorator('ContentChild', ɵ1$1, Query);\n\nvar ɵ2 = function ɵ2(selector) {\n  var data = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n  return Object.assign({\n    selector: selector,\n    first: false,\n    isViewQuery: true,\n    descendants: true\n  }, data);\n};\n/**\n * ViewChildren decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\n\nvar ViewChildren = makePropDecorator('ViewChildren', ɵ2, Query);\n\nvar ɵ3 = function ɵ3(selector, data) {\n  return Object.assign({\n    selector: selector,\n    first: true,\n    isViewQuery: true,\n    descendants: true\n  }, data);\n};\n/**\n * ViewChild decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\n\nvar ViewChild = makePropDecorator('ViewChild', ɵ3, Query);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * The strategy that the default change detector uses to detect changes.\n * When set, takes effect the next time change detection is triggered.\n *\n * @see {@link ChangeDetectorRef#usage-notes Change detection usage}\n *\n * @publicApi\n */\n\nvar ChangeDetectionStrategy;\n\n(function (ChangeDetectionStrategy) {\n  /**\n   * Use the `CheckOnce` strategy, meaning that automatic change detection is deactivated\n   * until reactivated by setting the strategy to `Default` (`CheckAlways`).\n   * Change detection can still be explicitly invoked.\n   * This strategy applies to all child directives and cannot be overridden.\n   */\n  ChangeDetectionStrategy[ChangeDetectionStrategy[\"OnPush\"] = 0] = \"OnPush\";\n  /**\n   * Use the default `CheckAlways` strategy, in which change detection is automatic until\n   * explicitly deactivated.\n   */\n\n  ChangeDetectionStrategy[ChangeDetectionStrategy[\"Default\"] = 1] = \"Default\";\n})(ChangeDetectionStrategy || (ChangeDetectionStrategy = {}));\n/**\n * Defines the possible states of the default change detector.\n * @see `ChangeDetectorRef`\n */\n\n\nvar ChangeDetectorStatus;\n\n(function (ChangeDetectorStatus) {\n  /**\n   * A state in which, after calling `detectChanges()`, the change detector\n   * state becomes `Checked`, and must be explicitly invoked or reactivated.\n   */\n  ChangeDetectorStatus[ChangeDetectorStatus[\"CheckOnce\"] = 0] = \"CheckOnce\";\n  /**\n   * A state in which change detection is skipped until the change detector mode\n   * becomes `CheckOnce`.\n   */\n\n  ChangeDetectorStatus[ChangeDetectorStatus[\"Checked\"] = 1] = \"Checked\";\n  /**\n   * A state in which change detection continues automatically until explicitly\n   * deactivated.\n   */\n\n  ChangeDetectorStatus[ChangeDetectorStatus[\"CheckAlways\"] = 2] = \"CheckAlways\";\n  /**\n   * A state in which a change detector sub tree is not a part of the main tree and\n   * should be skipped.\n   */\n\n  ChangeDetectorStatus[ChangeDetectorStatus[\"Detached\"] = 3] = \"Detached\";\n  /**\n   * Indicates that the change detector encountered an error checking a binding\n   * or calling a directive lifecycle method and is now in an inconsistent state. Change\n   * detectors in this state do not detect changes.\n   */\n\n  ChangeDetectorStatus[ChangeDetectorStatus[\"Errored\"] = 4] = \"Errored\";\n  /**\n   * Indicates that the change detector has been destroyed.\n   */\n\n  ChangeDetectorStatus[ChangeDetectorStatus[\"Destroyed\"] = 5] = \"Destroyed\";\n})(ChangeDetectorStatus || (ChangeDetectorStatus = {}));\n/**\n * Reports whether a given strategy is currently the default for change detection.\n * @param changeDetectionStrategy The strategy to check.\n * @returns True if the given strategy is the current default, false otherwise.\n * @see `ChangeDetectorStatus`\n * @see `ChangeDetectorRef`\n */\n\n\nfunction isDefaultChangeDetectionStrategy(changeDetectionStrategy) {\n  return changeDetectionStrategy == null || changeDetectionStrategy === ChangeDetectionStrategy.Default;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar __globalThis = typeof globalThis !== 'undefined' && globalThis;\n\nvar __window = typeof window !== 'undefined' && window;\n\nvar __self = typeof self !== 'undefined' && typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope && self;\n\nvar __global = typeof global !== 'undefined' && global; // Always use __globalThis if available, which is the spec-defined global variable across all\n// environments, then fallback to __global first, because in Node tests both __global and\n// __window may be defined and _global should be __global in that case.\n\n\nvar _global = __globalThis || __global || __window || __self;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar R3ResolvedDependencyType;\n\n(function (R3ResolvedDependencyType) {\n  R3ResolvedDependencyType[R3ResolvedDependencyType[\"Token\"] = 0] = \"Token\";\n  R3ResolvedDependencyType[R3ResolvedDependencyType[\"Attribute\"] = 1] = \"Attribute\";\n  R3ResolvedDependencyType[R3ResolvedDependencyType[\"ChangeDetectorRef\"] = 2] = \"ChangeDetectorRef\";\n  R3ResolvedDependencyType[R3ResolvedDependencyType[\"Invalid\"] = 3] = \"Invalid\";\n})(R3ResolvedDependencyType || (R3ResolvedDependencyType = {}));\n\nvar R3FactoryTarget;\n\n(function (R3FactoryTarget) {\n  R3FactoryTarget[R3FactoryTarget[\"Directive\"] = 0] = \"Directive\";\n  R3FactoryTarget[R3FactoryTarget[\"Component\"] = 1] = \"Component\";\n  R3FactoryTarget[R3FactoryTarget[\"Injectable\"] = 2] = \"Injectable\";\n  R3FactoryTarget[R3FactoryTarget[\"Pipe\"] = 3] = \"Pipe\";\n  R3FactoryTarget[R3FactoryTarget[\"NgModule\"] = 4] = \"NgModule\";\n})(R3FactoryTarget || (R3FactoryTarget = {}));\n\nvar ViewEncapsulation;\n\n(function (ViewEncapsulation) {\n  ViewEncapsulation[ViewEncapsulation[\"Emulated\"] = 0] = \"Emulated\"; // Historically the 1 value was for `Native` encapsulation which has been removed as of v11.\n\n  ViewEncapsulation[ViewEncapsulation[\"None\"] = 2] = \"None\";\n  ViewEncapsulation[ViewEncapsulation[\"ShadowDom\"] = 3] = \"ShadowDom\";\n})(ViewEncapsulation || (ViewEncapsulation = {}));\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction getCompilerFacade() {\n  var globalNg = _global['ng'];\n\n  if (!globalNg || !globalNg.ɵcompilerFacade) {\n    throw new Error(\"Angular JIT compilation failed: '@angular/compiler' not loaded!\\n\" + \"  - JIT compilation is discouraged for production use-cases! Consider AOT mode instead.\\n\" + \"  - Did you bootstrap using '@angular/platform-browser-dynamic' or '@angular/platform-server'?\\n\" + \"  - Alternatively provide the compiler with 'import \\\"@angular/compiler\\\";' before bootstrapping.\");\n  }\n\n  return globalNg.ɵcompilerFacade;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar __forward_ref__ = getClosureSafeProperty({\n  __forward_ref__: getClosureSafeProperty\n});\n/**\n * Allows to refer to references which are not yet defined.\n *\n * For instance, `forwardRef` is used when the `token` which we need to refer to for the purposes of\n * DI is declared, but not yet defined. It is also used when the `token` which we use when creating\n * a query is not yet defined.\n *\n * @usageNotes\n * ### Example\n * {@example core/di/ts/forward_ref/forward_ref_spec.ts region='forward_ref'}\n * @publicApi\n */\n\n\nfunction forwardRef(forwardRefFn) {\n  forwardRefFn.__forward_ref__ = forwardRef;\n\n  forwardRefFn.toString = function () {\n    return stringify(this());\n  };\n\n  return forwardRefFn;\n}\n/**\n * Lazily retrieves the reference value from a forwardRef.\n *\n * Acts as the identity function when given a non-forward-ref value.\n *\n * @usageNotes\n * ### Example\n *\n * {@example core/di/ts/forward_ref/forward_ref_spec.ts region='resolve_forward_ref'}\n *\n * @see `forwardRef`\n * @publicApi\n */\n\n\nfunction resolveForwardRef(type) {\n  return isForwardRef(type) ? type() : type;\n}\n/** Checks whether a function is wrapped by a `forwardRef`. */\n\n\nfunction isForwardRef(fn) {\n  return typeof fn === 'function' && fn.hasOwnProperty(__forward_ref__) && fn.__forward_ref__ === forwardRef;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @description\n *\n * Represents a type that a Component or other object is instances of.\n *\n * An example of a `Type` is `MyCustomComponent` class, which in JavaScript is represented by\n * the `MyCustomComponent` constructor function.\n *\n * @publicApi\n */\n\n\nvar Type = Function;\n\nfunction isType(v) {\n  return typeof v === 'function';\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Equivalent to ES6 spread, add each item to an array.\n *\n * @param items The items to add\n * @param arr The array to which you want to add the items\n */\n\n\nfunction addAllToArray(items, arr) {\n  for (var i = 0; i < items.length; i++) {\n    arr.push(items[i]);\n  }\n}\n/**\n * Flattens an array.\n */\n\n\nfunction flatten(list, dst) {\n  if (dst === undefined) dst = list;\n\n  for (var i = 0; i < list.length; i++) {\n    var item = list[i];\n\n    if (Array.isArray(item)) {\n      // we need to inline it.\n      if (dst === list) {\n        // Our assumption that the list was already flat was wrong and\n        // we need to clone flat since we need to write to it.\n        dst = list.slice(0, i);\n      }\n\n      flatten(item, dst);\n    } else if (dst !== list) {\n      dst.push(item);\n    }\n  }\n\n  return dst;\n}\n\nfunction deepForEach(input, fn) {\n  input.forEach(function (value) {\n    return Array.isArray(value) ? deepForEach(value, fn) : fn(value);\n  });\n}\n\nfunction addToArray(arr, index, value) {\n  // perf: array.push is faster than array.splice!\n  if (index >= arr.length) {\n    arr.push(value);\n  } else {\n    arr.splice(index, 0, value);\n  }\n}\n\nfunction removeFromArray(arr, index) {\n  // perf: array.pop is faster than array.splice!\n  if (index >= arr.length - 1) {\n    return arr.pop();\n  } else {\n    return arr.splice(index, 1)[0];\n  }\n}\n\nfunction newArray(size, value) {\n  var list = [];\n\n  for (var i = 0; i < size; i++) {\n    list.push(value);\n  }\n\n  return list;\n}\n/**\n * Remove item from array (Same as `Array.splice()` but faster.)\n *\n * `Array.splice()` is not as fast because it has to allocate an array for the elements which were\n * removed. This causes memory pressure and slows down code when most of the time we don't\n * care about the deleted items array.\n *\n * https://jsperf.com/fast-array-splice (About 20x faster)\n *\n * @param array Array to splice\n * @param index Index of element in array to remove.\n * @param count Number of items to remove.\n */\n\n\nfunction arraySplice(array, index, count) {\n  var length = array.length - count;\n\n  while (index < length) {\n    array[index] = array[index + count];\n    index++;\n  }\n\n  while (count--) {\n    array.pop(); // shrink the array\n  }\n}\n/**\n * Same as `Array.splice(index, 0, value)` but faster.\n *\n * `Array.splice()` is not fast because it has to allocate an array for the elements which were\n * removed. This causes memory pressure and slows down code when most of the time we don't\n * care about the deleted items array.\n *\n * @param array Array to splice.\n * @param index Index in array where the `value` should be added.\n * @param value Value to add to array.\n */\n\n\nfunction arrayInsert(array, index, value) {\n  ngDevMode && assertLessThanOrEqual(index, array.length, 'Can\\'t insert past array end.');\n  var end = array.length;\n\n  while (end > index) {\n    var previousEnd = end - 1;\n    array[end] = array[previousEnd];\n    end = previousEnd;\n  }\n\n  array[index] = value;\n}\n/**\n * Same as `Array.splice2(index, 0, value1, value2)` but faster.\n *\n * `Array.splice()` is not fast because it has to allocate an array for the elements which were\n * removed. This causes memory pressure and slows down code when most of the time we don't\n * care about the deleted items array.\n *\n * @param array Array to splice.\n * @param index Index in array where the `value` should be added.\n * @param value1 Value to add to array.\n * @param value2 Value to add to array.\n */\n\n\nfunction arrayInsert2(array, index, value1, value2) {\n  ngDevMode && assertLessThanOrEqual(index, array.length, 'Can\\'t insert past array end.');\n  var end = array.length;\n\n  if (end == index) {\n    // inserting at the end.\n    array.push(value1, value2);\n  } else if (end === 1) {\n    // corner case when we have less items in array than we have items to insert.\n    array.push(value2, array[0]);\n    array[0] = value1;\n  } else {\n    end--;\n    array.push(array[end - 1], array[end]);\n\n    while (end > index) {\n      var previousEnd = end - 2;\n      array[end] = array[previousEnd];\n      end--;\n    }\n\n    array[index] = value1;\n    array[index + 1] = value2;\n  }\n}\n/**\n * Insert a `value` into an `array` so that the array remains sorted.\n *\n * NOTE:\n * - Duplicates are not allowed, and are ignored.\n * - This uses binary search algorithm for fast inserts.\n *\n * @param array A sorted array to insert into.\n * @param value The value to insert.\n * @returns index of the inserted value.\n */\n\n\nfunction arrayInsertSorted(array, value) {\n  var index = arrayIndexOfSorted(array, value);\n\n  if (index < 0) {\n    // if we did not find it insert it.\n    index = ~index;\n    arrayInsert(array, index, value);\n  }\n\n  return index;\n}\n/**\n * Remove `value` from a sorted `array`.\n *\n * NOTE:\n * - This uses binary search algorithm for fast removals.\n *\n * @param array A sorted array to remove from.\n * @param value The value to remove.\n * @returns index of the removed value.\n *   - positive index if value found and removed.\n *   - negative index if value not found. (`~index` to get the value where it should have been\n *     inserted)\n */\n\n\nfunction arrayRemoveSorted(array, value) {\n  var index = arrayIndexOfSorted(array, value);\n\n  if (index >= 0) {\n    arraySplice(array, index, 1);\n  }\n\n  return index;\n}\n/**\n * Get an index of an `value` in a sorted `array`.\n *\n * NOTE:\n * - This uses binary search algorithm for fast removals.\n *\n * @param array A sorted array to binary search.\n * @param value The value to look for.\n * @returns index of the value.\n *   - positive index if value found.\n *   - negative index if value not found. (`~index` to get the value where it should have been\n *     located)\n */\n\n\nfunction arrayIndexOfSorted(array, value) {\n  return _arrayIndexOfSorted(array, value, 0);\n}\n/**\n * Set a `value` for a `key`.\n *\n * @param keyValueArray to modify.\n * @param key The key to locate or create.\n * @param value The value to set for a `key`.\n * @returns index (always even) of where the value vas set.\n */\n\n\nfunction keyValueArraySet(keyValueArray, key, value) {\n  var index = keyValueArrayIndexOf(keyValueArray, key);\n\n  if (index >= 0) {\n    // if we found it set it.\n    keyValueArray[index | 1] = value;\n  } else {\n    index = ~index;\n    arrayInsert2(keyValueArray, index, key, value);\n  }\n\n  return index;\n}\n/**\n * Retrieve a `value` for a `key` (on `undefined` if not found.)\n *\n * @param keyValueArray to search.\n * @param key The key to locate.\n * @return The `value` stored at the `key` location or `undefined if not found.\n */\n\n\nfunction keyValueArrayGet(keyValueArray, key) {\n  var index = keyValueArrayIndexOf(keyValueArray, key);\n\n  if (index >= 0) {\n    // if we found it retrieve it.\n    return keyValueArray[index | 1];\n  }\n\n  return undefined;\n}\n/**\n * Retrieve a `key` index value in the array or `-1` if not found.\n *\n * @param keyValueArray to search.\n * @param key The key to locate.\n * @returns index of where the key is (or should have been.)\n *   - positive (even) index if key found.\n *   - negative index if key not found. (`~index` (even) to get the index where it should have\n *     been inserted.)\n */\n\n\nfunction keyValueArrayIndexOf(keyValueArray, key) {\n  return _arrayIndexOfSorted(keyValueArray, key, 1);\n}\n/**\n * Delete a `key` (and `value`) from the `KeyValueArray`.\n *\n * @param keyValueArray to modify.\n * @param key The key to locate or delete (if exist).\n * @returns index of where the key was (or should have been.)\n *   - positive (even) index if key found and deleted.\n *   - negative index if key not found. (`~index` (even) to get the index where it should have\n *     been.)\n */\n\n\nfunction keyValueArrayDelete(keyValueArray, key) {\n  var index = keyValueArrayIndexOf(keyValueArray, key);\n\n  if (index >= 0) {\n    // if we found it remove it.\n    arraySplice(keyValueArray, index, 2);\n  }\n\n  return index;\n}\n/**\n * INTERNAL: Get an index of an `value` in a sorted `array` by grouping search by `shift`.\n *\n * NOTE:\n * - This uses binary search algorithm for fast removals.\n *\n * @param array A sorted array to binary search.\n * @param value The value to look for.\n * @param shift grouping shift.\n *   - `0` means look at every location\n *   - `1` means only look at every other (even) location (the odd locations are to be ignored as\n *         they are values.)\n * @returns index of the value.\n *   - positive index if value found.\n *   - negative index if value not found. (`~index` to get the value where it should have been\n * inserted)\n */\n\n\nfunction _arrayIndexOfSorted(array, value, shift) {\n  ngDevMode && assertEqual(Array.isArray(array), true, 'Expecting an array');\n  var start = 0;\n  var end = array.length >> shift;\n\n  while (end !== start) {\n    var middle = start + (end - start >> 1); // find the middle.\n\n    var current = array[middle << shift];\n\n    if (value === current) {\n      return middle << shift;\n    } else if (current > value) {\n      end = middle;\n    } else {\n      start = middle + 1; // We already searched middle so make it non-inclusive by adding 1\n    }\n  }\n\n  return ~(end << shift);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/*\n * #########################\n * Attention: These Regular expressions have to hold even if the code is minified!\n * ##########################\n */\n\n/**\n * Regular expression that detects pass-through constructors for ES5 output. This Regex\n * intends to capture the common delegation pattern emitted by TypeScript and Babel. Also\n * it intends to capture the pattern where existing constructors have been downleveled from\n * ES2015 to ES5 using TypeScript w/ downlevel iteration. e.g.\n *\n * ```\n *   function MyClass() {\n *     var _this = _super.apply(this, arguments) || this;\n * ```\n *\n * ```\n *   function MyClass() {\n *     var _this = _super.apply(this, __spread(arguments)) || this;\n * ```\n *\n * More details can be found in: https://github.com/angular/angular/issues/38453.\n */\n\n\nvar ES5_DELEGATE_CTOR = /^function\\s+\\S+\\(\\)\\s*{[\\s\\S]+\\.apply\\(this,\\s*(arguments|[^()]+\\(arguments\\))\\)/;\n/** Regular expression that detects ES2015 classes which extend from other classes. */\n\nvar ES2015_INHERITED_CLASS = /^class\\s+[A-Za-z\\d$_]*\\s*extends\\s+[^{]+{/;\n/**\n * Regular expression that detects ES2015 classes which extend from other classes and\n * have an explicit constructor defined.\n */\n\nvar ES2015_INHERITED_CLASS_WITH_CTOR = /^class\\s+[A-Za-z\\d$_]*\\s*extends\\s+[^{]+{[\\s\\S]*constructor\\s*\\(/;\n/**\n * Regular expression that detects ES2015 classes which extend from other classes\n * and inherit a constructor.\n */\n\nvar ES2015_INHERITED_CLASS_WITH_DELEGATE_CTOR = /^class\\s+[A-Za-z\\d$_]*\\s*extends\\s+[^{]+{[\\s\\S]*constructor\\s*\\(\\)\\s*{\\s*super\\(\\.\\.\\.arguments\\)/;\n/**\n * Determine whether a stringified type is a class which delegates its constructor\n * to its parent.\n *\n * This is not trivial since compiled code can actually contain a constructor function\n * even if the original source code did not. For instance, when the child class contains\n * an initialized instance property.\n */\n\nfunction isDelegateCtor(typeStr) {\n  return ES5_DELEGATE_CTOR.test(typeStr) || ES2015_INHERITED_CLASS_WITH_DELEGATE_CTOR.test(typeStr) || ES2015_INHERITED_CLASS.test(typeStr) && !ES2015_INHERITED_CLASS_WITH_CTOR.test(typeStr);\n}\n\nvar ReflectionCapabilities = /*#__PURE__*/function () {\n  function ReflectionCapabilities(reflect) {\n    _classCallCheck(this, ReflectionCapabilities);\n\n    this._reflect = reflect || _global['Reflect'];\n  }\n\n  _createClass2(ReflectionCapabilities, [{\n    key: \"isReflectionEnabled\",\n    value: function isReflectionEnabled() {\n      return true;\n    }\n  }, {\n    key: \"factory\",\n    value: function factory(t) {\n      return function () {\n        for (var _len5 = arguments.length, args = new Array(_len5), _key5 = 0; _key5 < _len5; _key5++) {\n          args[_key5] = arguments[_key5];\n        }\n\n        return _construct(t, args);\n      };\n    }\n    /** @internal */\n\n  }, {\n    key: \"_zipTypesAndAnnotations\",\n    value: function _zipTypesAndAnnotations(paramTypes, paramAnnotations) {\n      var result;\n\n      if (typeof paramTypes === 'undefined') {\n        result = newArray(paramAnnotations.length);\n      } else {\n        result = newArray(paramTypes.length);\n      }\n\n      for (var i = 0; i < result.length; i++) {\n        // TS outputs Object for parameters without types, while Traceur omits\n        // the annotations. For now we preserve the Traceur behavior to aid\n        // migration, but this can be revisited.\n        if (typeof paramTypes === 'undefined') {\n          result[i] = [];\n        } else if (paramTypes[i] && paramTypes[i] != Object) {\n          result[i] = [paramTypes[i]];\n        } else {\n          result[i] = [];\n        }\n\n        if (paramAnnotations && paramAnnotations[i] != null) {\n          result[i] = result[i].concat(paramAnnotations[i]);\n        }\n      }\n\n      return result;\n    }\n  }, {\n    key: \"_ownParameters\",\n    value: function _ownParameters(type, parentCtor) {\n      var typeStr = type.toString(); // If we have no decorators, we only have function.length as metadata.\n      // In that case, to detect whether a child class declared an own constructor or not,\n      // we need to look inside of that constructor to check whether it is\n      // just calling the parent.\n      // This also helps to work around for https://github.com/Microsoft/TypeScript/issues/12439\n      // that sets 'design:paramtypes' to []\n      // if a class inherits from another class but has no ctor declared itself.\n\n      if (isDelegateCtor(typeStr)) {\n        return null;\n      } // Prefer the direct API.\n\n\n      if (type.parameters && type.parameters !== parentCtor.parameters) {\n        return type.parameters;\n      } // API of tsickle for lowering decorators to properties on the class.\n\n\n      var tsickleCtorParams = type.ctorParameters;\n\n      if (tsickleCtorParams && tsickleCtorParams !== parentCtor.ctorParameters) {\n        // Newer tsickle uses a function closure\n        // Retain the non-function case for compatibility with older tsickle\n        var ctorParameters = typeof tsickleCtorParams === 'function' ? tsickleCtorParams() : tsickleCtorParams;\n\n        var _paramTypes = ctorParameters.map(function (ctorParam) {\n          return ctorParam && ctorParam.type;\n        });\n\n        var _paramAnnotations = ctorParameters.map(function (ctorParam) {\n          return ctorParam && convertTsickleDecoratorIntoMetadata(ctorParam.decorators);\n        });\n\n        return this._zipTypesAndAnnotations(_paramTypes, _paramAnnotations);\n      } // API for metadata created by invoking the decorators.\n\n\n      var paramAnnotations = type.hasOwnProperty(PARAMETERS) && type[PARAMETERS];\n\n      var paramTypes = this._reflect && this._reflect.getOwnMetadata && this._reflect.getOwnMetadata('design:paramtypes', type);\n\n      if (paramTypes || paramAnnotations) {\n        return this._zipTypesAndAnnotations(paramTypes, paramAnnotations);\n      } // If a class has no decorators, at least create metadata\n      // based on function.length.\n      // Note: We know that this is a real constructor as we checked\n      // the content of the constructor above.\n\n\n      return newArray(type.length);\n    }\n  }, {\n    key: \"parameters\",\n    value: function parameters(type) {\n      // Note: only report metadata if we have at least one class decorator\n      // to stay in sync with the static reflector.\n      if (!isType(type)) {\n        return [];\n      }\n\n      var parentCtor = getParentCtor(type);\n\n      var parameters = this._ownParameters(type, parentCtor);\n\n      if (!parameters && parentCtor !== Object) {\n        parameters = this.parameters(parentCtor);\n      }\n\n      return parameters || [];\n    }\n  }, {\n    key: \"_ownAnnotations\",\n    value: function _ownAnnotations(typeOrFunc, parentCtor) {\n      // Prefer the direct API.\n      if (typeOrFunc.annotations && typeOrFunc.annotations !== parentCtor.annotations) {\n        var annotations = typeOrFunc.annotations;\n\n        if (typeof annotations === 'function' && annotations.annotations) {\n          annotations = annotations.annotations;\n        }\n\n        return annotations;\n      } // API of tsickle for lowering decorators to properties on the class.\n\n\n      if (typeOrFunc.decorators && typeOrFunc.decorators !== parentCtor.decorators) {\n        return convertTsickleDecoratorIntoMetadata(typeOrFunc.decorators);\n      } // API for metadata created by invoking the decorators.\n\n\n      if (typeOrFunc.hasOwnProperty(ANNOTATIONS)) {\n        return typeOrFunc[ANNOTATIONS];\n      }\n\n      return null;\n    }\n  }, {\n    key: \"annotations\",\n    value: function annotations(typeOrFunc) {\n      if (!isType(typeOrFunc)) {\n        return [];\n      }\n\n      var parentCtor = getParentCtor(typeOrFunc);\n      var ownAnnotations = this._ownAnnotations(typeOrFunc, parentCtor) || [];\n      var parentAnnotations = parentCtor !== Object ? this.annotations(parentCtor) : [];\n      return parentAnnotations.concat(ownAnnotations);\n    }\n  }, {\n    key: \"_ownPropMetadata\",\n    value: function _ownPropMetadata(typeOrFunc, parentCtor) {\n      // Prefer the direct API.\n      if (typeOrFunc.propMetadata && typeOrFunc.propMetadata !== parentCtor.propMetadata) {\n        var propMetadata = typeOrFunc.propMetadata;\n\n        if (typeof propMetadata === 'function' && propMetadata.propMetadata) {\n          propMetadata = propMetadata.propMetadata;\n        }\n\n        return propMetadata;\n      } // API of tsickle for lowering decorators to properties on the class.\n\n\n      if (typeOrFunc.propDecorators && typeOrFunc.propDecorators !== parentCtor.propDecorators) {\n        var propDecorators = typeOrFunc.propDecorators;\n        var _propMetadata = {};\n        Object.keys(propDecorators).forEach(function (prop) {\n          _propMetadata[prop] = convertTsickleDecoratorIntoMetadata(propDecorators[prop]);\n        });\n        return _propMetadata;\n      } // API for metadata created by invoking the decorators.\n\n\n      if (typeOrFunc.hasOwnProperty(PROP_METADATA)) {\n        return typeOrFunc[PROP_METADATA];\n      }\n\n      return null;\n    }\n  }, {\n    key: \"propMetadata\",\n    value: function propMetadata(typeOrFunc) {\n      if (!isType(typeOrFunc)) {\n        return {};\n      }\n\n      var parentCtor = getParentCtor(typeOrFunc);\n      var propMetadata = {};\n\n      if (parentCtor !== Object) {\n        var parentPropMetadata = this.propMetadata(parentCtor);\n        Object.keys(parentPropMetadata).forEach(function (propName) {\n          propMetadata[propName] = parentPropMetadata[propName];\n        });\n      }\n\n      var ownPropMetadata = this._ownPropMetadata(typeOrFunc, parentCtor);\n\n      if (ownPropMetadata) {\n        Object.keys(ownPropMetadata).forEach(function (propName) {\n          var decorators = [];\n\n          if (propMetadata.hasOwnProperty(propName)) {\n            decorators.push.apply(decorators, _toConsumableArray(propMetadata[propName]));\n          }\n\n          decorators.push.apply(decorators, _toConsumableArray(ownPropMetadata[propName]));\n          propMetadata[propName] = decorators;\n        });\n      }\n\n      return propMetadata;\n    }\n  }, {\n    key: \"ownPropMetadata\",\n    value: function ownPropMetadata(typeOrFunc) {\n      if (!isType(typeOrFunc)) {\n        return {};\n      }\n\n      return this._ownPropMetadata(typeOrFunc, getParentCtor(typeOrFunc)) || {};\n    }\n  }, {\n    key: \"hasLifecycleHook\",\n    value: function hasLifecycleHook(type, lcProperty) {\n      return type instanceof Type && lcProperty in type.prototype;\n    }\n  }, {\n    key: \"guards\",\n    value: function guards(type) {\n      return {};\n    }\n  }, {\n    key: \"getter\",\n    value: function getter(name) {\n      return new Function('o', 'return o.' + name + ';');\n    }\n  }, {\n    key: \"setter\",\n    value: function setter(name) {\n      return new Function('o', 'v', 'return o.' + name + ' = v;');\n    }\n  }, {\n    key: \"method\",\n    value: function method(name) {\n      var functionBody = \"if (!o.\".concat(name, \") throw new Error('\\\"\").concat(name, \"\\\" is undefined');\\n        return o.\").concat(name, \".apply(o, args);\");\n      return new Function('o', 'args', functionBody);\n    } // There is not a concept of import uri in Js, but this is useful in developing Dart applications.\n\n  }, {\n    key: \"importUri\",\n    value: function importUri(type) {\n      // StaticSymbol\n      if (_typeof(type) === 'object' && type['filePath']) {\n        return type['filePath'];\n      } // Runtime type\n\n\n      return \"./\".concat(stringify(type));\n    }\n  }, {\n    key: \"resourceUri\",\n    value: function resourceUri(type) {\n      return \"./\".concat(stringify(type));\n    }\n  }, {\n    key: \"resolveIdentifier\",\n    value: function resolveIdentifier(name, moduleUrl, members, runtime) {\n      return runtime;\n    }\n  }, {\n    key: \"resolveEnum\",\n    value: function resolveEnum(enumIdentifier, name) {\n      return enumIdentifier[name];\n    }\n  }]);\n\n  return ReflectionCapabilities;\n}();\n\nfunction convertTsickleDecoratorIntoMetadata(decoratorInvocations) {\n  if (!decoratorInvocations) {\n    return [];\n  }\n\n  return decoratorInvocations.map(function (decoratorInvocation) {\n    var decoratorType = decoratorInvocation.type;\n    var annotationCls = decoratorType.annotationCls;\n    var annotationArgs = decoratorInvocation.args ? decoratorInvocation.args : [];\n    return _construct(annotationCls, _toConsumableArray(annotationArgs));\n  });\n}\n\nfunction getParentCtor(ctor) {\n  var parentProto = ctor.prototype ? Object.getPrototypeOf(ctor.prototype) : null;\n  var parentCtor = parentProto ? parentProto.constructor : null; // Note: We always use `Object` as the null value\n  // to simplify checking later on.\n\n  return parentCtor || Object;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar _reflect = null;\n\nfunction getReflect() {\n  return _reflect = _reflect || new ReflectionCapabilities();\n}\n\nfunction reflectDependencies(type) {\n  return convertDependencies(getReflect().parameters(type));\n}\n\nfunction convertDependencies(deps) {\n  var compiler = getCompilerFacade();\n  return deps.map(function (dep) {\n    return reflectDependency(compiler, dep);\n  });\n}\n\nfunction reflectDependency(compiler, dep) {\n  var meta = {\n    token: null,\n    host: false,\n    optional: false,\n    resolved: compiler.R3ResolvedDependencyType.Token,\n    self: false,\n    skipSelf: false\n  };\n\n  function setTokenAndResolvedType(token) {\n    meta.resolved = compiler.R3ResolvedDependencyType.Token;\n    meta.token = token;\n  }\n\n  if (Array.isArray(dep) && dep.length > 0) {\n    for (var j = 0; j < dep.length; j++) {\n      var param = dep[j];\n\n      if (param === undefined) {\n        // param may be undefined if type of dep is not set by ngtsc\n        continue;\n      }\n\n      var proto = Object.getPrototypeOf(param);\n\n      if (param instanceof Optional || proto.ngMetadataName === 'Optional') {\n        meta.optional = true;\n      } else if (param instanceof SkipSelf || proto.ngMetadataName === 'SkipSelf') {\n        meta.skipSelf = true;\n      } else if (param instanceof Self || proto.ngMetadataName === 'Self') {\n        meta.self = true;\n      } else if (param instanceof Host || proto.ngMetadataName === 'Host') {\n        meta.host = true;\n      } else if (param instanceof Inject) {\n        meta.token = param.token;\n      } else if (param instanceof Attribute) {\n        if (param.attributeName === undefined) {\n          throw new Error(\"Attribute name must be defined.\");\n        }\n\n        meta.token = param.attributeName;\n        meta.resolved = compiler.R3ResolvedDependencyType.Attribute;\n      } else if (param.__ChangeDetectorRef__ === true) {\n        meta.token = param;\n        meta.resolved = compiler.R3ResolvedDependencyType.ChangeDetectorRef;\n      } else {\n        setTokenAndResolvedType(param);\n      }\n    }\n  } else if (dep === undefined || Array.isArray(dep) && dep.length === 0) {\n    meta.token = undefined;\n    meta.resolved = R3ResolvedDependencyType.Invalid;\n  } else {\n    setTokenAndResolvedType(dep);\n  }\n\n  return meta;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Used to resolve resource URLs on `@Component` when used with JIT compilation.\n *\n * Example:\n * ```\n * @Component({\n *   selector: 'my-comp',\n *   templateUrl: 'my-comp.html', // This requires asynchronous resolution\n * })\n * class MyComponent{\n * }\n *\n * // Calling `renderComponent` will fail because `renderComponent` is a synchronous process\n * // and `MyComponent`'s `@Component.templateUrl` needs to be resolved asynchronously.\n *\n * // Calling `resolveComponentResources()` will resolve `@Component.templateUrl` into\n * // `@Component.template`, which allows `renderComponent` to proceed in a synchronous manner.\n *\n * // Use browser's `fetch()` function as the default resource resolution strategy.\n * resolveComponentResources(fetch).then(() => {\n *   // After resolution all URLs have been converted into `template` strings.\n *   renderComponent(MyComponent);\n * });\n *\n * ```\n *\n * NOTE: In AOT the resolution happens during compilation, and so there should be no need\n * to call this method outside JIT mode.\n *\n * @param resourceResolver a function which is responsible for returning a `Promise` to the\n * contents of the resolved URL. Browser's `fetch()` method is a good default implementation.\n */\n\n\nfunction resolveComponentResources(resourceResolver) {\n  // Store all promises which are fetching the resources.\n  var componentResolved = []; // Cache so that we don't fetch the same resource more than once.\n\n  var urlMap = new Map();\n\n  function cachedResourceResolve(url) {\n    var promise = urlMap.get(url);\n\n    if (!promise) {\n      var resp = resourceResolver(url);\n      urlMap.set(url, promise = resp.then(unwrapResponse));\n    }\n\n    return promise;\n  }\n\n  componentResourceResolutionQueue.forEach(function (component, type) {\n    var promises = [];\n\n    if (component.templateUrl) {\n      promises.push(cachedResourceResolve(component.templateUrl).then(function (template) {\n        component.template = template;\n      }));\n    }\n\n    var styleUrls = component.styleUrls;\n    var styles = component.styles || (component.styles = []);\n    var styleOffset = component.styles.length;\n    styleUrls && styleUrls.forEach(function (styleUrl, index) {\n      styles.push(''); // pre-allocate array.\n\n      promises.push(cachedResourceResolve(styleUrl).then(function (style) {\n        styles[styleOffset + index] = style;\n        styleUrls.splice(styleUrls.indexOf(styleUrl), 1);\n\n        if (styleUrls.length == 0) {\n          component.styleUrls = undefined;\n        }\n      }));\n    });\n    var fullyResolved = Promise.all(promises).then(function () {\n      return componentDefResolved(type);\n    });\n    componentResolved.push(fullyResolved);\n  });\n  clearResolutionOfComponentResourcesQueue();\n  return Promise.all(componentResolved).then(function () {\n    return undefined;\n  });\n}\n\nvar componentResourceResolutionQueue = new Map(); // Track when existing ɵcmp for a Type is waiting on resources.\n\nvar componentDefPendingResolution = new Set();\n\nfunction maybeQueueResolutionOfComponentResources(type, metadata) {\n  if (componentNeedsResolution(metadata)) {\n    componentResourceResolutionQueue.set(type, metadata);\n    componentDefPendingResolution.add(type);\n  }\n}\n\nfunction isComponentDefPendingResolution(type) {\n  return componentDefPendingResolution.has(type);\n}\n\nfunction componentNeedsResolution(component) {\n  return !!(component.templateUrl && !component.hasOwnProperty('template') || component.styleUrls && component.styleUrls.length);\n}\n\nfunction clearResolutionOfComponentResourcesQueue() {\n  var old = componentResourceResolutionQueue;\n  componentResourceResolutionQueue = new Map();\n  return old;\n}\n\nfunction restoreComponentResolutionQueue(queue) {\n  componentDefPendingResolution.clear();\n  queue.forEach(function (_, type) {\n    return componentDefPendingResolution.add(type);\n  });\n  componentResourceResolutionQueue = queue;\n}\n\nfunction isComponentResourceResolutionQueueEmpty() {\n  return componentResourceResolutionQueue.size === 0;\n}\n\nfunction unwrapResponse(response) {\n  return typeof response == 'string' ? response : response.text();\n}\n\nfunction componentDefResolved(type) {\n  componentDefPendingResolution.delete(type);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Defines template and style encapsulation options available for Component's {@link Component}.\n *\n * See {@link Component#encapsulation encapsulation}.\n *\n * @usageNotes\n * ### Example\n *\n * {@example core/ts/metadata/encapsulation.ts region='longform'}\n *\n * @publicApi\n */\n\n\nvar ViewEncapsulation$1;\n\n(function (ViewEncapsulation) {\n  /**\n   * Emulate `Native` scoping of styles by adding an attribute containing surrogate id to the Host\n   * Element and pre-processing the style rules provided via {@link Component#styles styles} or\n   * {@link Component#styleUrls styleUrls}, and adding the new Host Element attribute to all\n   * selectors.\n   *\n   * This is the default option.\n   */\n  ViewEncapsulation[ViewEncapsulation[\"Emulated\"] = 0] = \"Emulated\"; // Historically the 1 value was for `Native` encapsulation which has been removed as of v11.\n\n  /**\n   * Don't provide any template or style encapsulation.\n   */\n\n  ViewEncapsulation[ViewEncapsulation[\"None\"] = 2] = \"None\";\n  /**\n   * Use Shadow DOM to encapsulate styles.\n   *\n   * For the DOM this means using modern [Shadow\n   * DOM](https://w3c.github.io/webcomponents/spec/shadow/) and\n   * creating a ShadowRoot for Component's Host Element.\n   */\n\n  ViewEncapsulation[ViewEncapsulation[\"ShadowDom\"] = 3] = \"ShadowDom\";\n})(ViewEncapsulation$1 || (ViewEncapsulation$1 = {}));\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction ngDevModeResetPerfCounters() {\n  var locationString = typeof location !== 'undefined' ? location.toString() : '';\n  var newCounters = {\n    namedConstructors: locationString.indexOf('ngDevMode=namedConstructors') != -1,\n    firstCreatePass: 0,\n    tNode: 0,\n    tView: 0,\n    rendererCreateTextNode: 0,\n    rendererSetText: 0,\n    rendererCreateElement: 0,\n    rendererAddEventListener: 0,\n    rendererSetAttribute: 0,\n    rendererRemoveAttribute: 0,\n    rendererSetProperty: 0,\n    rendererSetClassName: 0,\n    rendererAddClass: 0,\n    rendererRemoveClass: 0,\n    rendererSetStyle: 0,\n    rendererRemoveStyle: 0,\n    rendererDestroy: 0,\n    rendererDestroyNode: 0,\n    rendererMoveNode: 0,\n    rendererRemoveNode: 0,\n    rendererAppendChild: 0,\n    rendererInsertBefore: 0,\n    rendererCreateComment: 0\n  }; // Make sure to refer to ngDevMode as ['ngDevMode'] for closure.\n\n  var allowNgDevModeTrue = locationString.indexOf('ngDevMode=false') === -1;\n  _global['ngDevMode'] = allowNgDevModeTrue && newCounters;\n  return newCounters;\n}\n/**\n * This function checks to see if the `ngDevMode` has been set. If yes,\n * then we honor it, otherwise we default to dev mode with additional checks.\n *\n * The idea is that unless we are doing production build where we explicitly\n * set `ngDevMode == false` we should be helping the developer by providing\n * as much early warning and errors as possible.\n *\n * `ɵɵdefineComponent` is guaranteed to have been called before any component template functions\n * (and thus Ivy instructions), so a single initialization there is sufficient to ensure ngDevMode\n * is defined for the entire instruction set.\n *\n * When checking `ngDevMode` on toplevel, always init it before referencing it\n * (e.g. `((typeof ngDevMode === 'undefined' || ngDevMode) && initNgDevMode())`), otherwise you can\n *  get a `ReferenceError` like in https://github.com/angular/angular/issues/31595.\n *\n * Details on possible values for `ngDevMode` can be found on its docstring.\n *\n * NOTE:\n * - changes to the `ngDevMode` name must be synced with `compiler-cli/src/tooling.ts`.\n */\n\n\nfunction initNgDevMode() {\n  // The below checks are to ensure that calling `initNgDevMode` multiple times does not\n  // reset the counters.\n  // If the `ngDevMode` is not an object, then it means we have not created the perf counters\n  // yet.\n  if (typeof ngDevMode === 'undefined' || ngDevMode) {\n    if ((typeof ngDevMode === \"undefined\" ? \"undefined\" : _typeof(ngDevMode)) !== 'object') {\n      ngDevModeResetPerfCounters();\n    }\n\n    return typeof ngDevMode !== 'undefined' && !!ngDevMode;\n  }\n\n  return false;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * This file contains reuseable \"empty\" symbols that can be used as default return values\n * in different parts of the rendering code. Because the same symbols are returned, this\n * allows for identity checks against these values to be consistently used by the framework\n * code.\n */\n\n\nvar EMPTY_OBJ = {};\nvar EMPTY_ARRAY = []; // freezing the values prevents any code from accidentally inserting new values in\n\nif ((typeof ngDevMode === 'undefined' || ngDevMode) && initNgDevMode()) {\n  // These property accesses can be ignored because ngDevMode will be set to false\n  // when optimizing code and the whole if statement will be dropped.\n  // tslint:disable-next-line:no-toplevel-property-access\n  Object.freeze(EMPTY_OBJ); // tslint:disable-next-line:no-toplevel-property-access\n\n  Object.freeze(EMPTY_ARRAY);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar NG_COMP_DEF = getClosureSafeProperty({\n  ɵcmp: getClosureSafeProperty\n});\nvar NG_DIR_DEF = getClosureSafeProperty({\n  ɵdir: getClosureSafeProperty\n});\nvar NG_PIPE_DEF = getClosureSafeProperty({\n  ɵpipe: getClosureSafeProperty\n});\nvar NG_MOD_DEF = getClosureSafeProperty({\n  ɵmod: getClosureSafeProperty\n});\nvar NG_LOC_ID_DEF = getClosureSafeProperty({\n  ɵloc: getClosureSafeProperty\n});\nvar NG_FACTORY_DEF = getClosureSafeProperty({\n  ɵfac: getClosureSafeProperty\n});\n/**\n * If a directive is diPublic, bloomAdd sets a property on the type with this constant as\n * the key and the directive's unique ID as the value. This allows us to map directives to their\n * bloom filter bit for DI.\n */\n// TODO(misko): This is wrong. The NG_ELEMENT_ID should never be minified.\n\nvar NG_ELEMENT_ID = getClosureSafeProperty({\n  __NG_ELEMENT_ID__: getClosureSafeProperty\n});\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar _renderCompCount = 0;\n/**\n * Create a component definition object.\n *\n *\n * # Example\n * ```\n * class MyDirective {\n *   // Generated by Angular Template Compiler\n *   // [Symbol] syntax will not be supported by TypeScript until v2.7\n *   static ɵcmp = defineComponent({\n *     ...\n *   });\n * }\n * ```\n * @codeGenApi\n */\n\nfunction ɵɵdefineComponent(componentDefinition) {\n  return noSideEffects(function () {\n    // Initialize ngDevMode. This must be the first statement in ɵɵdefineComponent.\n    // See the `initNgDevMode` docstring for more information.\n    (typeof ngDevMode === 'undefined' || ngDevMode) && initNgDevMode();\n    var type = componentDefinition.type;\n    var typePrototype = type.prototype;\n    var declaredInputs = {};\n    var def = {\n      type: type,\n      providersResolver: null,\n      decls: componentDefinition.decls,\n      vars: componentDefinition.vars,\n      factory: null,\n      template: componentDefinition.template || null,\n      consts: componentDefinition.consts || null,\n      ngContentSelectors: componentDefinition.ngContentSelectors,\n      hostBindings: componentDefinition.hostBindings || null,\n      hostVars: componentDefinition.hostVars || 0,\n      hostAttrs: componentDefinition.hostAttrs || null,\n      contentQueries: componentDefinition.contentQueries || null,\n      declaredInputs: declaredInputs,\n      inputs: null,\n      outputs: null,\n      exportAs: componentDefinition.exportAs || null,\n      onPush: componentDefinition.changeDetection === ChangeDetectionStrategy.OnPush,\n      directiveDefs: null,\n      pipeDefs: null,\n      selectors: componentDefinition.selectors || EMPTY_ARRAY,\n      viewQuery: componentDefinition.viewQuery || null,\n      features: componentDefinition.features || null,\n      data: componentDefinition.data || {},\n      // TODO(misko): convert ViewEncapsulation into const enum so that it can be used\n      // directly in the next line. Also `None` should be 0 not 2.\n      encapsulation: componentDefinition.encapsulation || ViewEncapsulation$1.Emulated,\n      id: 'c',\n      styles: componentDefinition.styles || EMPTY_ARRAY,\n      _: null,\n      setInput: null,\n      schemas: componentDefinition.schemas || null,\n      tView: null\n    };\n    var directiveTypes = componentDefinition.directives;\n    var feature = componentDefinition.features;\n    var pipeTypes = componentDefinition.pipes;\n    def.id += _renderCompCount++;\n    def.inputs = invertObject(componentDefinition.inputs, declaredInputs), def.outputs = invertObject(componentDefinition.outputs), feature && feature.forEach(function (fn) {\n      return fn(def);\n    });\n    def.directiveDefs = directiveTypes ? function () {\n      return (typeof directiveTypes === 'function' ? directiveTypes() : directiveTypes).map(extractDirectiveDef);\n    } : null;\n    def.pipeDefs = pipeTypes ? function () {\n      return (typeof pipeTypes === 'function' ? pipeTypes() : pipeTypes).map(extractPipeDef);\n    } : null;\n    return def;\n  });\n}\n/**\n * Generated next to NgModules to monkey-patch directive and pipe references onto a component's\n * definition, when generating a direct reference in the component file would otherwise create an\n * import cycle.\n *\n * See [this explanation](https://hackmd.io/Odw80D0pR6yfsOjg_7XCJg?view) for more details.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵsetComponentScope(type, directives, pipes) {\n  var def = type.ɵcmp;\n\n  def.directiveDefs = function () {\n    return directives.map(extractDirectiveDef);\n  };\n\n  def.pipeDefs = function () {\n    return pipes.map(extractPipeDef);\n  };\n}\n\nfunction extractDirectiveDef(type) {\n  var def = getComponentDef(type) || getDirectiveDef(type);\n\n  if (ngDevMode && !def) {\n    throw new Error(\"'\".concat(type.name, \"' is neither 'ComponentType' or 'DirectiveType'.\"));\n  }\n\n  return def;\n}\n\nfunction extractPipeDef(type) {\n  var def = getPipeDef(type);\n\n  if (ngDevMode && !def) {\n    throw new Error(\"'\".concat(type.name, \"' is not a 'PipeType'.\"));\n  }\n\n  return def;\n}\n\nvar autoRegisterModuleById = {};\n/**\n * @codeGenApi\n */\n\nfunction ɵɵdefineNgModule(def) {\n  var res = {\n    type: def.type,\n    bootstrap: def.bootstrap || EMPTY_ARRAY,\n    declarations: def.declarations || EMPTY_ARRAY,\n    imports: def.imports || EMPTY_ARRAY,\n    exports: def.exports || EMPTY_ARRAY,\n    transitiveCompileScopes: null,\n    schemas: def.schemas || null,\n    id: def.id || null\n  };\n\n  if (def.id != null) {\n    noSideEffects(function () {\n      autoRegisterModuleById[def.id] = def.type;\n    });\n  }\n\n  return res;\n}\n/**\n * Adds the module metadata that is necessary to compute the module's transitive scope to an\n * existing module definition.\n *\n * Scope metadata of modules is not used in production builds, so calls to this function can be\n * marked pure to tree-shake it from the bundle, allowing for all referenced declarations\n * to become eligible for tree-shaking as well.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵsetNgModuleScope(type, scope) {\n  return noSideEffects(function () {\n    var ngModuleDef = getNgModuleDef(type, true);\n    ngModuleDef.declarations = scope.declarations || EMPTY_ARRAY;\n    ngModuleDef.imports = scope.imports || EMPTY_ARRAY;\n    ngModuleDef.exports = scope.exports || EMPTY_ARRAY;\n  });\n}\n/**\n * Inverts an inputs or outputs lookup such that the keys, which were the\n * minified keys, are part of the values, and the values are parsed so that\n * the publicName of the property is the new key\n *\n * e.g. for\n *\n * ```\n * class Comp {\n *   @Input()\n *   propName1: string;\n *\n *   @Input('publicName2')\n *   declaredPropName2: number;\n * }\n * ```\n *\n * will be serialized as\n *\n * ```\n * {\n *   propName1: 'propName1',\n *   declaredPropName2: ['publicName2', 'declaredPropName2'],\n * }\n * ```\n *\n * which is than translated by the minifier as:\n *\n * ```\n * {\n *   minifiedPropName1: 'propName1',\n *   minifiedPropName2: ['publicName2', 'declaredPropName2'],\n * }\n * ```\n *\n * becomes: (public name => minifiedName)\n *\n * ```\n * {\n *  'propName1': 'minifiedPropName1',\n *  'publicName2': 'minifiedPropName2',\n * }\n * ```\n *\n * Optionally the function can take `secondary` which will result in: (public name => declared name)\n *\n * ```\n * {\n *  'propName1': 'propName1',\n *  'publicName2': 'declaredPropName2',\n * }\n * ```\n *\n\n */\n\n\nfunction invertObject(obj, secondary) {\n  if (obj == null) return EMPTY_OBJ;\n  var newLookup = {};\n\n  for (var minifiedKey in obj) {\n    if (obj.hasOwnProperty(minifiedKey)) {\n      var publicName = obj[minifiedKey];\n      var declaredName = publicName;\n\n      if (Array.isArray(publicName)) {\n        declaredName = publicName[1];\n        publicName = publicName[0];\n      }\n\n      newLookup[publicName] = minifiedKey;\n\n      if (secondary) {\n        secondary[publicName] = declaredName;\n      }\n    }\n  }\n\n  return newLookup;\n}\n/**\n * Create a directive definition object.\n *\n * # Example\n * ```ts\n * class MyDirective {\n *   // Generated by Angular Template Compiler\n *   // [Symbol] syntax will not be supported by TypeScript until v2.7\n *   static ɵdir = ɵɵdefineDirective({\n *     ...\n *   });\n * }\n * ```\n *\n * @codeGenApi\n */\n\n\nvar ɵɵdefineDirective = ɵɵdefineComponent;\n/**\n * Create a pipe definition object.\n *\n * # Example\n * ```\n * class MyPipe implements PipeTransform {\n *   // Generated by Angular Template Compiler\n *   static ɵpipe = definePipe({\n *     ...\n *   });\n * }\n * ```\n * @param pipeDef Pipe definition generated by the compiler\n *\n * @codeGenApi\n */\n\nfunction ɵɵdefinePipe(pipeDef) {\n  return {\n    type: pipeDef.type,\n    name: pipeDef.name,\n    factory: null,\n    pure: pipeDef.pure !== false,\n    onDestroy: pipeDef.type.prototype.ngOnDestroy || null\n  };\n}\n/**\n * The following getter methods retrieve the definition form the type. Currently the retrieval\n * honors inheritance, but in the future we may change the rule to require that definitions are\n * explicit. This would require some sort of migration strategy.\n */\n\n\nfunction getComponentDef(type) {\n  return type[NG_COMP_DEF] || null;\n}\n\nfunction getDirectiveDef(type) {\n  return type[NG_DIR_DEF] || null;\n}\n\nfunction getPipeDef(type) {\n  return type[NG_PIPE_DEF] || null;\n}\n\nfunction getNgModuleDef(type, throwNotFound) {\n  var ngModuleDef = type[NG_MOD_DEF] || null;\n\n  if (!ngModuleDef && throwNotFound === true) {\n    throw new Error(\"Type \".concat(stringify(type), \" does not have '\\u0275mod' property.\"));\n  }\n\n  return ngModuleDef;\n}\n\nfunction getNgLocaleIdDef(type) {\n  return type[NG_LOC_ID_DEF] || null;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Used for stringify render output in Ivy.\n * Important! This function is very performance-sensitive and we should\n * be extra careful not to introduce megamorphic reads in it.\n */\n\n\nfunction renderStringify(value) {\n  if (typeof value === 'string') return value;\n  if (value == null) return '';\n  return '' + value;\n}\n/**\n * Used to stringify a value so that it can be displayed in an error message.\n * Important! This function contains a megamorphic read and should only be\n * used for error messages.\n */\n\n\nfunction stringifyForError(value) {\n  if (typeof value === 'function') return value.name || value.toString();\n\n  if (_typeof(value) === 'object' && value != null && typeof value.type === 'function') {\n    return value.type.name || value.type.toString();\n  }\n\n  return renderStringify(value);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Injection flags for DI.\n *\n * @publicApi\n */\n\n\nvar InjectFlags;\n\n(function (InjectFlags) {\n  // TODO(alxhub): make this 'const' when ngc no longer writes exports of it into ngfactory files.\n\n  /** Check self and check parent injector if needed */\n  InjectFlags[InjectFlags[\"Default\"] = 0] = \"Default\";\n  /**\n   * Specifies that an injector should retrieve a dependency from any injector until reaching the\n   * host element of the current component. (Only used with Element Injector)\n   */\n\n  InjectFlags[InjectFlags[\"Host\"] = 1] = \"Host\";\n  /** Don't ascend to ancestors of the node requesting injection. */\n\n  InjectFlags[InjectFlags[\"Self\"] = 2] = \"Self\";\n  /** Skip the node that is requesting injection. */\n\n  InjectFlags[InjectFlags[\"SkipSelf\"] = 4] = \"SkipSelf\";\n  /** Inject `defaultValue` instead if token not found. */\n\n  InjectFlags[InjectFlags[\"Optional\"] = 8] = \"Optional\";\n})(InjectFlags || (InjectFlags = {}));\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Current implementation of inject.\n *\n * By default, it is `injectInjectorOnly`, which makes it `Injector`-only aware. It can be changed\n * to `directiveInject`, which brings in the `NodeInjector` system of ivy. It is designed this\n * way for two reasons:\n *  1. `Injector` should not depend on ivy logic.\n *  2. To maintain tree shake-ability we don't want to bring in unnecessary code.\n */\n\n\nvar _injectImplementation;\n\nfunction getInjectImplementation() {\n  return _injectImplementation;\n}\n/**\n * Sets the current inject implementation.\n */\n\n\nfunction setInjectImplementation(impl) {\n  var previous = _injectImplementation;\n  _injectImplementation = impl;\n  return previous;\n}\n/**\n * Injects `root` tokens in limp mode.\n *\n * If no injector exists, we can still inject tree-shakable providers which have `providedIn` set to\n * `\"root\"`. This is known as the limp mode injection. In such case the value is stored in the\n * `InjectableDef`.\n */\n\n\nfunction injectRootLimpMode(token, notFoundValue, flags) {\n  var injectableDef = getInjectableDef(token);\n\n  if (injectableDef && injectableDef.providedIn == 'root') {\n    return injectableDef.value === undefined ? injectableDef.value = injectableDef.factory() : injectableDef.value;\n  }\n\n  if (flags & InjectFlags.Optional) return null;\n  if (notFoundValue !== undefined) return notFoundValue;\n  throw new Error(\"Injector: NOT_FOUND [\".concat(stringify(token), \"]\"));\n}\n/**\n * Assert that `_injectImplementation` is not `fn`.\n *\n * This is useful, to prevent infinite recursion.\n *\n * @param fn Function which it should not equal to\n */\n\n\nfunction assertInjectImplementationNotEqual(fn) {\n  ngDevMode && assertNotEqual(_injectImplementation, fn, 'Calling ɵɵinject would cause infinite recursion');\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar _THROW_IF_NOT_FOUND = {};\nvar THROW_IF_NOT_FOUND = _THROW_IF_NOT_FOUND;\nvar NG_TEMP_TOKEN_PATH = 'ngTempTokenPath';\nvar NG_TOKEN_PATH = 'ngTokenPath';\nvar NEW_LINE = /\\n/gm;\nvar NO_NEW_LINE = 'ɵ';\nvar SOURCE = '__source';\nvar ɵ0$2 = getClosureSafeProperty;\nvar USE_VALUE = getClosureSafeProperty({\n  provide: String,\n  useValue: ɵ0$2\n});\n/**\n * Current injector value used by `inject`.\n * - `undefined`: it is an error to call `inject`\n * - `null`: `inject` can be called but there is no injector (limp-mode).\n * - Injector instance: Use the injector for resolution.\n */\n\nvar _currentInjector = undefined;\n\nfunction setCurrentInjector(injector) {\n  var former = _currentInjector;\n  _currentInjector = injector;\n  return former;\n}\n\nfunction injectInjectorOnly(token) {\n  var flags = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : InjectFlags.Default;\n\n  if (_currentInjector === undefined) {\n    throw new Error(\"inject() must be called from an injection context\");\n  } else if (_currentInjector === null) {\n    return injectRootLimpMode(token, undefined, flags);\n  } else {\n    return _currentInjector.get(token, flags & InjectFlags.Optional ? null : undefined, flags);\n  }\n}\n\nfunction ɵɵinject(token) {\n  var flags = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : InjectFlags.Default;\n  return (getInjectImplementation() || injectInjectorOnly)(resolveForwardRef(token), flags);\n}\n/**\n * Throws an error indicating that a factory function could not be generated by the compiler for a\n * particular class.\n *\n * This instruction allows the actual error message to be optimized away when ngDevMode is turned\n * off, saving bytes of generated code while still providing a good experience in dev mode.\n *\n * The name of the class is not mentioned here, but will be in the generated factory function name\n * and thus in the stack trace.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵinvalidFactoryDep(index) {\n  var msg = ngDevMode ? \"This constructor is not compatible with Angular Dependency Injection because its dependency at index \".concat(index, \" of the parameter list is invalid.\\nThis can happen if the dependency type is a primitive like a string or if an ancestor of this class is missing an Angular decorator.\\n\\nPlease check that 1) the type for the parameter at index \").concat(index, \" is correct and 2) the correct Angular decorators are defined for this class and its ancestors.\") : 'invalid';\n  throw new Error(msg);\n}\n/**\n * Injects a token from the currently active injector.\n *\n * Must be used in the context of a factory function such as one defined for an\n * `InjectionToken`. Throws an error if not called from such a context.\n *\n * Within such a factory function, using this function to request injection of a dependency\n * is faster and more type-safe than providing an additional array of dependencies\n * (as has been common with `useFactory` providers).\n *\n * @param token The injection token for the dependency to be injected.\n * @param flags Optional flags that control how injection is executed.\n * The flags correspond to injection strategies that can be specified with\n * parameter decorators `@Host`, `@Self`, `@SkipSef`, and `@Optional`.\n * @returns True if injection is successful, null otherwise.\n *\n * @usageNotes\n *\n * ### Example\n *\n * {@example core/di/ts/injector_spec.ts region='ShakableInjectionToken'}\n *\n * @publicApi\n */\n\n\nvar inject = ɵɵinject;\n\nfunction injectArgs(types) {\n  var args = [];\n\n  for (var i = 0; i < types.length; i++) {\n    var arg = resolveForwardRef(types[i]);\n\n    if (Array.isArray(arg)) {\n      if (arg.length === 0) {\n        throw new Error('Arguments array must have arguments.');\n      }\n\n      var type = undefined;\n      var flags = InjectFlags.Default;\n\n      for (var j = 0; j < arg.length; j++) {\n        var meta = arg[j];\n\n        if (meta instanceof Optional || meta.ngMetadataName === 'Optional' || meta === Optional) {\n          flags |= InjectFlags.Optional;\n        } else if (meta instanceof SkipSelf || meta.ngMetadataName === 'SkipSelf' || meta === SkipSelf) {\n          flags |= InjectFlags.SkipSelf;\n        } else if (meta instanceof Self || meta.ngMetadataName === 'Self' || meta === Self) {\n          flags |= InjectFlags.Self;\n        } else if (meta instanceof Inject || meta === Inject) {\n          type = meta.token;\n        } else {\n          type = meta;\n        }\n      }\n\n      args.push(ɵɵinject(type, flags));\n    } else {\n      args.push(ɵɵinject(arg));\n    }\n  }\n\n  return args;\n}\n\nfunction catchInjectorError(e, token, injectorErrorName, source) {\n  var tokenPath = e[NG_TEMP_TOKEN_PATH];\n\n  if (token[SOURCE]) {\n    tokenPath.unshift(token[SOURCE]);\n  }\n\n  e.message = formatError('\\n' + e.message, tokenPath, injectorErrorName, source);\n  e[NG_TOKEN_PATH] = tokenPath;\n  e[NG_TEMP_TOKEN_PATH] = null;\n  throw e;\n}\n\nfunction formatError(text, obj, injectorErrorName) {\n  var source = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;\n  text = text && text.charAt(0) === '\\n' && text.charAt(1) == NO_NEW_LINE ? text.substr(2) : text;\n  var context = stringify(obj);\n\n  if (Array.isArray(obj)) {\n    context = obj.map(stringify).join(' -> ');\n  } else if (_typeof(obj) === 'object') {\n    var parts = [];\n\n    for (var key in obj) {\n      if (obj.hasOwnProperty(key)) {\n        var value = obj[key];\n        parts.push(key + ':' + (typeof value === 'string' ? JSON.stringify(value) : stringify(value)));\n      }\n    }\n\n    context = \"{\".concat(parts.join(', '), \"}\");\n  }\n\n  return \"\".concat(injectorErrorName).concat(source ? '(' + source + ')' : '', \"[\").concat(context, \"]: \").concat(text.replace(NEW_LINE, '\\n  '));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Most of the use of `document` in Angular is from within the DI system so it is possible to simply\n * inject the `DOCUMENT` token and are done.\n *\n * Ivy is special because it does not rely upon the DI and must get hold of the document some other\n * way.\n *\n * The solution is to define `getDocument()` and `setDocument()` top-level functions for ivy.\n * Wherever ivy needs the global document, it calls `getDocument()` instead.\n *\n * When running ivy outside of a browser environment, it is necessary to call `setDocument()` to\n * tell ivy what the global `document` is.\n *\n * Angular does this for us in each of the standard platforms (`Browser`, `Server`, and `WebWorker`)\n * by calling `setDocument()` when providing the `DOCUMENT` token.\n */\n\n\nvar DOCUMENT = undefined;\n/**\n * Tell ivy what the `document` is for this platform.\n *\n * It is only necessary to call this if the current platform is not a browser.\n *\n * @param document The object representing the global `document` in this environment.\n */\n\nfunction setDocument(document) {\n  DOCUMENT = document;\n}\n/**\n * Access the object that represents the `document` for this platform.\n *\n * Ivy calls this whenever it needs to access the `document` object.\n * For example to create the renderer or to do sanitization.\n */\n\n\nfunction getDocument() {\n  if (DOCUMENT !== undefined) {\n    return DOCUMENT;\n  } else if (typeof document !== 'undefined') {\n    return document;\n  } // No \"document\" can be found. This should only happen if we are running ivy outside Angular and\n  // the current platform is not a browser. Since this is not a supported scenario at the moment\n  // this should not happen in Angular apps.\n  // Once we support running ivy outside of Angular we will need to publish `setDocument()` as a\n  // public API. Meanwhile we just return `undefined` and let the application fail.\n\n\n  return undefined;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// Below are constants for LView indices to help us look up LView members\n// without having to remember the specific indices.\n// Uglify will inline these when minifying so there shouldn't be a cost.\n\n\nvar HOST = 0;\nvar TVIEW = 1;\nvar FLAGS = 2;\nvar PARENT = 3;\nvar NEXT = 4;\nvar TRANSPLANTED_VIEWS_TO_REFRESH = 5;\nvar T_HOST = 6;\nvar CLEANUP = 7;\nvar CONTEXT = 8;\nvar INJECTOR = 9;\nvar RENDERER_FACTORY = 10;\nvar RENDERER = 11;\nvar SANITIZER = 12;\nvar CHILD_HEAD = 13;\nvar CHILD_TAIL = 14; // FIXME(misko): Investigate if the three declarations aren't all same thing.\n\nvar DECLARATION_VIEW = 15;\nvar DECLARATION_COMPONENT_VIEW = 16;\nvar DECLARATION_LCONTAINER = 17;\nvar PREORDER_HOOK_FLAGS = 18;\nvar QUERIES = 19;\n/**\n * Size of LView's header. Necessary to adjust for it when setting slots.\n *\n * IMPORTANT: `HEADER_OFFSET` should only be referred to the in the `ɵɵ*` instructions to translate\n * instruction index into `LView` index. All other indexes should be in the `LView` index space and\n * there should be no need to refer to `HEADER_OFFSET` anywhere else.\n */\n\nvar HEADER_OFFSET = 20;\n/**\n * Converts `TViewType` into human readable text.\n * Make sure this matches with `TViewType`\n */\n\nvar TViewTypeAsString = ['Root', 'Component', 'Embedded']; // Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\n\nvar unusedValueExportToPlacateAjd = 1;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Special location which allows easy identification of type. If we have an array which was\n * retrieved from the `LView` and that array has `true` at `TYPE` location, we know it is\n * `LContainer`.\n */\n\nvar TYPE = 1;\n/**\n * Below are constants for LContainer indices to help us look up LContainer members\n * without having to remember the specific indices.\n * Uglify will inline these when minifying so there shouldn't be a cost.\n */\n\n/**\n * Flag to signify that this `LContainer` may have transplanted views which need to be change\n * detected. (see: `LView[DECLARATION_COMPONENT_VIEW])`.\n *\n * This flag, once set, is never unset for the `LContainer`. This means that when unset we can skip\n * a lot of work in `refreshEmbeddedViews`. But when set we still need to verify\n * that the `MOVED_VIEWS` are transplanted and on-push.\n */\n\nvar HAS_TRANSPLANTED_VIEWS = 2; // PARENT, NEXT, TRANSPLANTED_VIEWS_TO_REFRESH are indices 3, 4, and 5\n// As we already have these constants in LView, we don't need to re-create them.\n// T_HOST is index 6\n// We already have this constants in LView, we don't need to re-create it.\n\nvar NATIVE = 7;\nvar VIEW_REFS = 8;\nvar MOVED_VIEWS = 9;\n/**\n * Size of LContainer's header. Represents the index after which all views in the\n * container will be inserted. We need to keep a record of current views so we know\n * which views are already in the DOM (and don't need to be re-added) and so we can\n * remove views from the DOM when they are no longer required.\n */\n\nvar CONTAINER_HEADER_OFFSET = 10; // Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\n\nvar unusedValueExportToPlacateAjd$1 = 1;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * True if `value` is `LView`.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\n\nfunction isLView(value) {\n  return Array.isArray(value) && _typeof(value[TYPE]) === 'object';\n}\n/**\n * True if `value` is `LContainer`.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\n\n\nfunction isLContainer(value) {\n  return Array.isArray(value) && value[TYPE] === true;\n}\n\nfunction isContentQueryHost(tNode) {\n  return (tNode.flags & 8\n  /* hasContentQuery */\n  ) !== 0;\n}\n\nfunction isComponentHost(tNode) {\n  return (tNode.flags & 2\n  /* isComponentHost */\n  ) === 2\n  /* isComponentHost */\n  ;\n}\n\nfunction isDirectiveHost(tNode) {\n  return (tNode.flags & 1\n  /* isDirectiveHost */\n  ) === 1\n  /* isDirectiveHost */\n  ;\n}\n\nfunction isComponentDef(def) {\n  return def.template !== null;\n}\n\nfunction isRootView(target) {\n  return (target[FLAGS] & 512\n  /* IsRoot */\n  ) !== 0;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// [Assert functions do not constraint type when they are guarded by a truthy\n// expression.](https://github.com/microsoft/TypeScript/issues/37295)\n\n\nfunction assertTNodeForLView(tNode, lView) {\n  assertTNodeForTView(tNode, lView[TVIEW]);\n}\n\nfunction assertTNodeForTView(tNode, tView) {\n  assertTNode(tNode);\n  tNode.hasOwnProperty('tView_') && assertEqual(tNode.tView_, tView, 'This TNode does not belong to this TView.');\n}\n\nfunction assertTNode(tNode) {\n  assertDefined(tNode, 'TNode must be defined');\n\n  if (!(tNode && _typeof(tNode) === 'object' && tNode.hasOwnProperty('directiveStylingLast'))) {\n    throwError('Not of type TNode, got: ' + tNode);\n  }\n}\n\nfunction assertTIcu(tIcu) {\n  assertDefined(tIcu, 'Expected TIcu to be defined');\n\n  if (!(typeof tIcu.currentCaseLViewIndex === 'number')) {\n    throwError('Object is not of TIcu type.');\n  }\n}\n\nfunction assertComponentType(actual) {\n  var msg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'Type passed in is not ComponentType, it does not have \\'ɵcmp\\' property.';\n\n  if (!getComponentDef(actual)) {\n    throwError(msg);\n  }\n}\n\nfunction assertNgModuleType(actual) {\n  var msg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'Type passed in is not NgModuleType, it does not have \\'ɵmod\\' property.';\n\n  if (!getNgModuleDef(actual)) {\n    throwError(msg);\n  }\n}\n\nfunction assertCurrentTNodeIsParent(isParent) {\n  assertEqual(isParent, true, 'currentTNode should be a parent');\n}\n\nfunction assertHasParent(tNode) {\n  assertDefined(tNode, 'currentTNode should exist!');\n  assertDefined(tNode.parent, 'currentTNode should have a parent');\n}\n\nfunction assertDataNext(lView, index, arr) {\n  if (arr == null) arr = lView;\n  assertEqual(arr.length, index, \"index \".concat(index, \" expected to be at the end of arr (length \").concat(arr.length, \")\"));\n}\n\nfunction assertLContainer(value) {\n  assertDefined(value, 'LContainer must be defined');\n  assertEqual(isLContainer(value), true, 'Expecting LContainer');\n}\n\nfunction assertLViewOrUndefined(value) {\n  value && assertEqual(isLView(value), true, 'Expecting LView or undefined or null');\n}\n\nfunction assertLView(value) {\n  assertDefined(value, 'LView must be defined');\n  assertEqual(isLView(value), true, 'Expecting LView');\n}\n\nfunction assertFirstCreatePass(tView, errMessage) {\n  assertEqual(tView.firstCreatePass, true, errMessage || 'Should only be called in first create pass.');\n}\n\nfunction assertFirstUpdatePass(tView, errMessage) {\n  assertEqual(tView.firstUpdatePass, true, errMessage || 'Should only be called in first update pass.');\n}\n/**\n * This is a basic sanity check that an object is probably a directive def. DirectiveDef is\n * an interface, so we can't do a direct instanceof check.\n */\n\n\nfunction assertDirectiveDef(obj) {\n  if (obj.type === undefined || obj.selectors == undefined || obj.inputs === undefined) {\n    throwError(\"Expected a DirectiveDef/ComponentDef and this object does not seem to have the expected shape.\");\n  }\n}\n\nfunction assertIndexInDeclRange(lView, index) {\n  var tView = lView[1];\n  assertBetween(HEADER_OFFSET, tView.bindingStartIndex, index);\n}\n\nfunction assertIndexInVarsRange(lView, index) {\n  var tView = lView[1];\n  assertBetween(tView.bindingStartIndex, tView.expandoStartIndex, index);\n}\n\nfunction assertIndexInExpandoRange(lView, index) {\n  var tView = lView[1];\n  assertBetween(tView.expandoStartIndex, lView.length, index);\n}\n\nfunction assertBetween(lower, upper, index) {\n  if (!(lower <= index && index < upper)) {\n    throwError(\"Index out of range (expecting \".concat(lower, \" <= \").concat(index, \" < \").concat(upper, \")\"));\n  }\n}\n/**\n * This is a basic sanity check that the `injectorIndex` seems to point to what looks like a\n * NodeInjector data structure.\n *\n * @param lView `LView` which should be checked.\n * @param injectorIndex index into the `LView` where the `NodeInjector` is expected.\n */\n\n\nfunction assertNodeInjector(lView, injectorIndex) {\n  assertIndexInExpandoRange(lView, injectorIndex);\n  assertIndexInExpandoRange(lView, injectorIndex + 8\n  /* PARENT */\n  );\n  assertNumber(lView[injectorIndex + 0], 'injectorIndex should point to a bloom filter');\n  assertNumber(lView[injectorIndex + 1], 'injectorIndex should point to a bloom filter');\n  assertNumber(lView[injectorIndex + 2], 'injectorIndex should point to a bloom filter');\n  assertNumber(lView[injectorIndex + 3], 'injectorIndex should point to a bloom filter');\n  assertNumber(lView[injectorIndex + 4], 'injectorIndex should point to a bloom filter');\n  assertNumber(lView[injectorIndex + 5], 'injectorIndex should point to a bloom filter');\n  assertNumber(lView[injectorIndex + 6], 'injectorIndex should point to a bloom filter');\n  assertNumber(lView[injectorIndex + 7], 'injectorIndex should point to a bloom filter');\n  assertNumber(lView[injectorIndex + 8\n  /* PARENT */\n  ], 'injectorIndex should point to parent injector');\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar SVG_NAMESPACE = 'http://www.w3.org/2000/svg';\nvar MATH_ML_NAMESPACE = 'http://www.w3.org/1998/MathML/';\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * This property will be monkey-patched on elements, components and directives\n */\n\nvar MONKEY_PATCH_KEY_NAME = '__ngContext__';\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// TODO: cleanup once the code is merged in angular/angular\n\nvar RendererStyleFlags3;\n\n(function (RendererStyleFlags3) {\n  RendererStyleFlags3[RendererStyleFlags3[\"Important\"] = 1] = \"Important\";\n  RendererStyleFlags3[RendererStyleFlags3[\"DashCase\"] = 2] = \"DashCase\";\n})(RendererStyleFlags3 || (RendererStyleFlags3 = {}));\n/** Returns whether the `renderer` is a `ProceduralRenderer3` */\n\n\nfunction isProceduralRenderer(renderer) {\n  return !!renderer.listen;\n}\n\nvar ɵ0$3 = function ɵ0$3(hostElement, rendererType) {\n  return getDocument();\n};\n\nvar domRendererFactory3 = {\n  createRenderer: ɵ0$3\n}; // Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\n\nvar unusedValueExportToPlacateAjd$2 = 1;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * For efficiency reasons we often put several different data types (`RNode`, `LView`, `LContainer`)\n * in same location in `LView`. This is because we don't want to pre-allocate space for it\n * because the storage is sparse. This file contains utilities for dealing with such data types.\n *\n * How do we know what is stored at a given location in `LView`.\n * - `Array.isArray(value) === false` => `RNode` (The normal storage value)\n * - `Array.isArray(value) === true` => then the `value[0]` represents the wrapped value.\n *   - `typeof value[TYPE] === 'object'` => `LView`\n *      - This happens when we have a component at a given location\n *   - `typeof value[TYPE] === true` => `LContainer`\n *      - This happens when we have `LContainer` binding at a given location.\n *\n *\n * NOTE: it is assumed that `Array.isArray` and `typeof` operations are very efficient.\n */\n\n/**\n * Returns `RNode`.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\n\nfunction unwrapRNode(value) {\n  while (Array.isArray(value)) {\n    value = value[HOST];\n  }\n\n  return value;\n}\n/**\n * Returns `LView` or `null` if not found.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\n\n\nfunction unwrapLView(value) {\n  while (Array.isArray(value)) {\n    // This check is same as `isLView()` but we don't call at as we don't want to call\n    // `Array.isArray()` twice and give JITer more work for inlining.\n    if (_typeof(value[TYPE]) === 'object') return value;\n    value = value[HOST];\n  }\n\n  return null;\n}\n/**\n * Returns `LContainer` or `null` if not found.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\n\n\nfunction unwrapLContainer(value) {\n  while (Array.isArray(value)) {\n    // This check is same as `isLContainer()` but we don't call at as we don't want to call\n    // `Array.isArray()` twice and give JITer more work for inlining.\n    if (value[TYPE] === true) return value;\n    value = value[HOST];\n  }\n\n  return null;\n}\n/**\n * Retrieves an element value from the provided `viewData`, by unwrapping\n * from any containers, component views, or style contexts.\n */\n\n\nfunction getNativeByIndex(index, lView) {\n  ngDevMode && assertIndexInRange(lView, index);\n  ngDevMode && assertGreaterThanOrEqual(index, HEADER_OFFSET, 'Expected to be past HEADER_OFFSET');\n  return unwrapRNode(lView[index]);\n}\n/**\n * Retrieve an `RNode` for a given `TNode` and `LView`.\n *\n * This function guarantees in dev mode to retrieve a non-null `RNode`.\n *\n * @param tNode\n * @param lView\n */\n\n\nfunction getNativeByTNode(tNode, lView) {\n  ngDevMode && assertTNodeForLView(tNode, lView);\n  ngDevMode && assertIndexInRange(lView, tNode.index);\n  var node = unwrapRNode(lView[tNode.index]);\n  ngDevMode && !isProceduralRenderer(lView[RENDERER]) && assertDomNode(node);\n  return node;\n}\n/**\n * Retrieve an `RNode` or `null` for a given `TNode` and `LView`.\n *\n * Some `TNode`s don't have associated `RNode`s. For example `Projection`\n *\n * @param tNode\n * @param lView\n */\n\n\nfunction getNativeByTNodeOrNull(tNode, lView) {\n  var index = tNode === null ? -1 : tNode.index;\n\n  if (index !== -1) {\n    ngDevMode && assertTNodeForLView(tNode, lView);\n    var node = unwrapRNode(lView[index]);\n    ngDevMode && node !== null && !isProceduralRenderer(lView[RENDERER]) && assertDomNode(node);\n    return node;\n  }\n\n  return null;\n} // fixme(misko): The return Type should be `TNode|null`\n\n\nfunction getTNode(tView, index) {\n  ngDevMode && assertGreaterThan(index, -1, 'wrong index for TNode');\n  ngDevMode && assertLessThan(index, tView.data.length, 'wrong index for TNode');\n  var tNode = tView.data[index];\n  ngDevMode && tNode !== null && assertTNode(tNode);\n  return tNode;\n}\n/** Retrieves a value from any `LView` or `TData`. */\n\n\nfunction load(view, index) {\n  ngDevMode && assertIndexInRange(view, index);\n  return view[index];\n}\n\nfunction getComponentLViewByIndex(nodeIndex, hostView) {\n  // Could be an LView or an LContainer. If LContainer, unwrap to find LView.\n  ngDevMode && assertIndexInRange(hostView, nodeIndex);\n  var slotValue = hostView[nodeIndex];\n  var lView = isLView(slotValue) ? slotValue : slotValue[HOST];\n  return lView;\n}\n/**\n * Returns the monkey-patch value data present on the target (which could be\n * a component, directive or a DOM node).\n */\n\n\nfunction readPatchedData(target) {\n  ngDevMode && assertDefined(target, 'Target expected');\n  return target[MONKEY_PATCH_KEY_NAME] || null;\n}\n\nfunction readPatchedLView(target) {\n  var value = readPatchedData(target);\n\n  if (value) {\n    return Array.isArray(value) ? value : value.lView;\n  }\n\n  return null;\n}\n/** Checks whether a given view is in creation mode */\n\n\nfunction isCreationMode(view) {\n  return (view[FLAGS] & 4\n  /* CreationMode */\n  ) === 4\n  /* CreationMode */\n  ;\n}\n/**\n * Returns a boolean for whether the view is attached to the change detection tree.\n *\n * Note: This determines whether a view should be checked, not whether it's inserted\n * into a container. For that, you'll want `viewAttachedToContainer` below.\n */\n\n\nfunction viewAttachedToChangeDetector(view) {\n  return (view[FLAGS] & 128\n  /* Attached */\n  ) === 128\n  /* Attached */\n  ;\n}\n/** Returns a boolean for whether the view is attached to a container. */\n\n\nfunction viewAttachedToContainer(view) {\n  return isLContainer(view[PARENT]);\n}\n\nfunction getConstant(consts, index) {\n  if (index === null || index === undefined) return null;\n  ngDevMode && assertIndexInRange(consts, index);\n  return consts[index];\n}\n/**\n * Resets the pre-order hook flags of the view.\n * @param lView the LView on which the flags are reset\n */\n\n\nfunction resetPreOrderHookFlags(lView) {\n  lView[PREORDER_HOOK_FLAGS] = 0;\n}\n/**\n * Updates the `TRANSPLANTED_VIEWS_TO_REFRESH` counter on the `LContainer` as well as the parents\n * whose\n *  1. counter goes from 0 to 1, indicating that there is a new child that has a view to refresh\n *  or\n *  2. counter goes from 1 to 0, indicating there are no more descendant views to refresh\n */\n\n\nfunction updateTransplantedViewCount(lContainer, amount) {\n  lContainer[TRANSPLANTED_VIEWS_TO_REFRESH] += amount;\n  var viewOrContainer = lContainer;\n  var parent = lContainer[PARENT];\n\n  while (parent !== null && (amount === 1 && viewOrContainer[TRANSPLANTED_VIEWS_TO_REFRESH] === 1 || amount === -1 && viewOrContainer[TRANSPLANTED_VIEWS_TO_REFRESH] === 0)) {\n    parent[TRANSPLANTED_VIEWS_TO_REFRESH] += amount;\n    viewOrContainer = parent;\n    parent = parent[PARENT];\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar instructionState = {\n  lFrame: createLFrame(null),\n  bindingsEnabled: true,\n  isInCheckNoChangesMode: false\n};\n/**\n * Returns true if the instruction state stack is empty.\n *\n * Intended to be called from tests only (tree shaken otherwise).\n */\n\nfunction specOnlyIsInstructionStateEmpty() {\n  return instructionState.lFrame.parent === null;\n}\n\nfunction getElementDepthCount() {\n  return instructionState.lFrame.elementDepthCount;\n}\n\nfunction increaseElementDepthCount() {\n  instructionState.lFrame.elementDepthCount++;\n}\n\nfunction decreaseElementDepthCount() {\n  instructionState.lFrame.elementDepthCount--;\n}\n\nfunction getBindingsEnabled() {\n  return instructionState.bindingsEnabled;\n}\n/**\n * Enables directive matching on elements.\n *\n *  * Example:\n * ```\n * <my-comp my-directive>\n *   Should match component / directive.\n * </my-comp>\n * <div ngNonBindable>\n *   <!-- ɵɵdisableBindings() -->\n *   <my-comp my-directive>\n *     Should not match component / directive because we are in ngNonBindable.\n *   </my-comp>\n *   <!-- ɵɵenableBindings() -->\n * </div>\n * ```\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵenableBindings() {\n  instructionState.bindingsEnabled = true;\n}\n/**\n * Disables directive matching on element.\n *\n *  * Example:\n * ```\n * <my-comp my-directive>\n *   Should match component / directive.\n * </my-comp>\n * <div ngNonBindable>\n *   <!-- ɵɵdisableBindings() -->\n *   <my-comp my-directive>\n *     Should not match component / directive because we are in ngNonBindable.\n *   </my-comp>\n *   <!-- ɵɵenableBindings() -->\n * </div>\n * ```\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵdisableBindings() {\n  instructionState.bindingsEnabled = false;\n}\n/**\n * Return the current `LView`.\n */\n\n\nfunction getLView() {\n  return instructionState.lFrame.lView;\n}\n/**\n * Return the current `TView`.\n */\n\n\nfunction getTView() {\n  return instructionState.lFrame.tView;\n}\n/**\n * Restores `contextViewData` to the given OpaqueViewState instance.\n *\n * Used in conjunction with the getCurrentView() instruction to save a snapshot\n * of the current view and restore it when listeners are invoked. This allows\n * walking the declaration view tree in listeners to get vars from parent views.\n *\n * @param viewToRestore The OpaqueViewState instance to restore.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵrestoreView(viewToRestore) {\n  instructionState.lFrame.contextLView = viewToRestore;\n}\n\nfunction getCurrentTNode() {\n  var currentTNode = getCurrentTNodePlaceholderOk();\n\n  while (currentTNode !== null && currentTNode.type === 64\n  /* Placeholder */\n  ) {\n    currentTNode = currentTNode.parent;\n  }\n\n  return currentTNode;\n}\n\nfunction getCurrentTNodePlaceholderOk() {\n  return instructionState.lFrame.currentTNode;\n}\n\nfunction getCurrentParentTNode() {\n  var lFrame = instructionState.lFrame;\n  var currentTNode = lFrame.currentTNode;\n  return lFrame.isParent ? currentTNode : currentTNode.parent;\n}\n\nfunction setCurrentTNode(tNode, isParent) {\n  ngDevMode && tNode && assertTNodeForTView(tNode, instructionState.lFrame.tView);\n  var lFrame = instructionState.lFrame;\n  lFrame.currentTNode = tNode;\n  lFrame.isParent = isParent;\n}\n\nfunction isCurrentTNodeParent() {\n  return instructionState.lFrame.isParent;\n}\n\nfunction setCurrentTNodeAsNotParent() {\n  instructionState.lFrame.isParent = false;\n}\n\nfunction setCurrentTNodeAsParent() {\n  instructionState.lFrame.isParent = true;\n}\n\nfunction getContextLView() {\n  return instructionState.lFrame.contextLView;\n}\n\nfunction isInCheckNoChangesMode() {\n  // TODO(misko): remove this from the LView since it is ngDevMode=true mode only.\n  return instructionState.isInCheckNoChangesMode;\n}\n\nfunction setIsInCheckNoChangesMode(mode) {\n  instructionState.isInCheckNoChangesMode = mode;\n} // top level variables should not be exported for performance reasons (PERF_NOTES.md)\n\n\nfunction getBindingRoot() {\n  var lFrame = instructionState.lFrame;\n  var index = lFrame.bindingRootIndex;\n\n  if (index === -1) {\n    index = lFrame.bindingRootIndex = lFrame.tView.bindingStartIndex;\n  }\n\n  return index;\n}\n\nfunction getBindingIndex() {\n  return instructionState.lFrame.bindingIndex;\n}\n\nfunction setBindingIndex(value) {\n  return instructionState.lFrame.bindingIndex = value;\n}\n\nfunction nextBindingIndex() {\n  return instructionState.lFrame.bindingIndex++;\n}\n\nfunction incrementBindingIndex(count) {\n  var lFrame = instructionState.lFrame;\n  var index = lFrame.bindingIndex;\n  lFrame.bindingIndex = lFrame.bindingIndex + count;\n  return index;\n}\n\nfunction isInI18nBlock() {\n  return instructionState.lFrame.inI18n;\n}\n\nfunction setInI18nBlock(isInI18nBlock) {\n  instructionState.lFrame.inI18n = isInI18nBlock;\n}\n/**\n * Set a new binding root index so that host template functions can execute.\n *\n * Bindings inside the host template are 0 index. But because we don't know ahead of time\n * how many host bindings we have we can't pre-compute them. For this reason they are all\n * 0 index and we just shift the root so that they match next available location in the LView.\n *\n * @param bindingRootIndex Root index for `hostBindings`\n * @param currentDirectiveIndex `TData[currentDirectiveIndex]` will point to the current directive\n *        whose `hostBindings` are being processed.\n */\n\n\nfunction setBindingRootForHostBindings(bindingRootIndex, currentDirectiveIndex) {\n  var lFrame = instructionState.lFrame;\n  lFrame.bindingIndex = lFrame.bindingRootIndex = bindingRootIndex;\n  setCurrentDirectiveIndex(currentDirectiveIndex);\n}\n/**\n * When host binding is executing this points to the directive index.\n * `TView.data[getCurrentDirectiveIndex()]` is `DirectiveDef`\n * `LView[getCurrentDirectiveIndex()]` is directive instance.\n */\n\n\nfunction getCurrentDirectiveIndex() {\n  return instructionState.lFrame.currentDirectiveIndex;\n}\n/**\n * Sets an index of a directive whose `hostBindings` are being processed.\n *\n * @param currentDirectiveIndex `TData` index where current directive instance can be found.\n */\n\n\nfunction setCurrentDirectiveIndex(currentDirectiveIndex) {\n  instructionState.lFrame.currentDirectiveIndex = currentDirectiveIndex;\n}\n/**\n * Retrieve the current `DirectiveDef` which is active when `hostBindings` instruction is being\n * executed.\n *\n * @param tData Current `TData` where the `DirectiveDef` will be looked up at.\n */\n\n\nfunction getCurrentDirectiveDef(tData) {\n  var currentDirectiveIndex = instructionState.lFrame.currentDirectiveIndex;\n  return currentDirectiveIndex === -1 ? null : tData[currentDirectiveIndex];\n}\n\nfunction getCurrentQueryIndex() {\n  return instructionState.lFrame.currentQueryIndex;\n}\n\nfunction setCurrentQueryIndex(value) {\n  instructionState.lFrame.currentQueryIndex = value;\n}\n/**\n * Returns a `TNode` of the location where the current `LView` is declared at.\n *\n * @param lView an `LView` that we want to find parent `TNode` for.\n */\n\n\nfunction getDeclarationTNode(lView) {\n  var tView = lView[TVIEW]; // Return the declaration parent for embedded views\n\n  if (tView.type === 2\n  /* Embedded */\n  ) {\n    ngDevMode && assertDefined(tView.declTNode, 'Embedded TNodes should have declaration parents.');\n    return tView.declTNode;\n  } // Components don't have `TView.declTNode` because each instance of component could be\n  // inserted in different location, hence `TView.declTNode` is meaningless.\n  // Falling back to `T_HOST` in case we cross component boundary.\n\n\n  if (tView.type === 1\n  /* Component */\n  ) {\n    return lView[T_HOST];\n  } // Remaining TNode type is `TViewType.Root` which doesn't have a parent TNode.\n\n\n  return null;\n}\n/**\n * This is a light weight version of the `enterView` which is needed by the DI system.\n *\n * @param lView `LView` location of the DI context.\n * @param tNode `TNode` for DI context\n * @param flags DI context flags. if `SkipSelf` flag is set than we walk up the declaration\n *     tree from `tNode`  until we find parent declared `TElementNode`.\n * @returns `true` if we have successfully entered DI associated with `tNode` (or with declared\n *     `TNode` if `flags` has  `SkipSelf`). Failing to enter DI implies that no associated\n *     `NodeInjector` can be found and we should instead use `ModuleInjector`.\n *     - If `true` than this call must be fallowed by `leaveDI`\n *     - If `false` than this call failed and we should NOT call `leaveDI`\n */\n\n\nfunction enterDI(lView, tNode, flags) {\n  ngDevMode && assertLViewOrUndefined(lView);\n\n  if (flags & InjectFlags.SkipSelf) {\n    ngDevMode && assertTNodeForTView(tNode, lView[TVIEW]);\n    var parentTNode = tNode;\n    var parentLView = lView;\n\n    while (true) {\n      ngDevMode && assertDefined(parentTNode, 'Parent TNode should be defined');\n      parentTNode = parentTNode.parent;\n\n      if (parentTNode === null && !(flags & InjectFlags.Host)) {\n        parentTNode = getDeclarationTNode(parentLView);\n        if (parentTNode === null) break; // In this case, a parent exists and is definitely an element. So it will definitely\n        // have an existing lView as the declaration view, which is why we can assume it's defined.\n\n        ngDevMode && assertDefined(parentLView, 'Parent LView should be defined');\n        parentLView = parentLView[DECLARATION_VIEW]; // In Ivy there are Comment nodes that correspond to ngIf and NgFor embedded directives\n        // We want to skip those and look only at Elements and ElementContainers to ensure\n        // we're looking at true parent nodes, and not content or other types.\n\n        if (parentTNode.type & (2\n        /* Element */\n        | 8\n        /* ElementContainer */\n        )) {\n          break;\n        }\n      } else {\n        break;\n      }\n    }\n\n    if (parentTNode === null) {\n      // If we failed to find a parent TNode this means that we should use module injector.\n      return false;\n    } else {\n      tNode = parentTNode;\n      lView = parentLView;\n    }\n  }\n\n  ngDevMode && assertTNodeForLView(tNode, lView);\n  var lFrame = instructionState.lFrame = allocLFrame();\n  lFrame.currentTNode = tNode;\n  lFrame.lView = lView;\n  return true;\n}\n/**\n * Swap the current lView with a new lView.\n *\n * For performance reasons we store the lView in the top level of the module.\n * This way we minimize the number of properties to read. Whenever a new view\n * is entered we have to store the lView for later, and when the view is\n * exited the state has to be restored\n *\n * @param newView New lView to become active\n * @returns the previously active lView;\n */\n\n\nfunction enterView(newView) {\n  ngDevMode && assertNotEqual(newView[0], newView[1], '????');\n  ngDevMode && assertLViewOrUndefined(newView);\n  var newLFrame = allocLFrame();\n\n  if (ngDevMode) {\n    assertEqual(newLFrame.isParent, true, 'Expected clean LFrame');\n    assertEqual(newLFrame.lView, null, 'Expected clean LFrame');\n    assertEqual(newLFrame.tView, null, 'Expected clean LFrame');\n    assertEqual(newLFrame.selectedIndex, -1, 'Expected clean LFrame');\n    assertEqual(newLFrame.elementDepthCount, 0, 'Expected clean LFrame');\n    assertEqual(newLFrame.currentDirectiveIndex, -1, 'Expected clean LFrame');\n    assertEqual(newLFrame.currentNamespace, null, 'Expected clean LFrame');\n    assertEqual(newLFrame.bindingRootIndex, -1, 'Expected clean LFrame');\n    assertEqual(newLFrame.currentQueryIndex, 0, 'Expected clean LFrame');\n  }\n\n  var tView = newView[TVIEW];\n  instructionState.lFrame = newLFrame;\n  ngDevMode && tView.firstChild && assertTNodeForTView(tView.firstChild, tView);\n  newLFrame.currentTNode = tView.firstChild;\n  newLFrame.lView = newView;\n  newLFrame.tView = tView;\n  newLFrame.contextLView = newView;\n  newLFrame.bindingIndex = tView.bindingStartIndex;\n  newLFrame.inI18n = false;\n}\n/**\n * Allocates next free LFrame. This function tries to reuse the `LFrame`s to lower memory pressure.\n */\n\n\nfunction allocLFrame() {\n  var currentLFrame = instructionState.lFrame;\n  var childLFrame = currentLFrame === null ? null : currentLFrame.child;\n  var newLFrame = childLFrame === null ? createLFrame(currentLFrame) : childLFrame;\n  return newLFrame;\n}\n\nfunction createLFrame(parent) {\n  var lFrame = {\n    currentTNode: null,\n    isParent: true,\n    lView: null,\n    tView: null,\n    selectedIndex: -1,\n    contextLView: null,\n    elementDepthCount: 0,\n    currentNamespace: null,\n    currentDirectiveIndex: -1,\n    bindingRootIndex: -1,\n    bindingIndex: -1,\n    currentQueryIndex: 0,\n    parent: parent,\n    child: null,\n    inI18n: false\n  };\n  parent !== null && (parent.child = lFrame); // link the new LFrame for reuse.\n\n  return lFrame;\n}\n/**\n * A lightweight version of leave which is used with DI.\n *\n * This function only resets `currentTNode` and `LView` as those are the only properties\n * used with DI (`enterDI()`).\n *\n * NOTE: This function is reexported as `leaveDI`. However `leaveDI` has return type of `void` where\n * as `leaveViewLight` has `LFrame`. This is so that `leaveViewLight` can be used in `leaveView`.\n */\n\n\nfunction leaveViewLight() {\n  var oldLFrame = instructionState.lFrame;\n  instructionState.lFrame = oldLFrame.parent;\n  oldLFrame.currentTNode = null;\n  oldLFrame.lView = null;\n  return oldLFrame;\n}\n/**\n * This is a lightweight version of the `leaveView` which is needed by the DI system.\n *\n * NOTE: this function is an alias so that we can change the type of the function to have `void`\n * return type.\n */\n\n\nvar leaveDI = leaveViewLight;\n/**\n * Leave the current `LView`\n *\n * This pops the `LFrame` with the associated `LView` from the stack.\n *\n * IMPORTANT: We must zero out the `LFrame` values here otherwise they will be retained. This is\n * because for performance reasons we don't release `LFrame` but rather keep it for next use.\n */\n\nfunction leaveView() {\n  var oldLFrame = leaveViewLight();\n  oldLFrame.isParent = true;\n  oldLFrame.tView = null;\n  oldLFrame.selectedIndex = -1;\n  oldLFrame.contextLView = null;\n  oldLFrame.elementDepthCount = 0;\n  oldLFrame.currentDirectiveIndex = -1;\n  oldLFrame.currentNamespace = null;\n  oldLFrame.bindingRootIndex = -1;\n  oldLFrame.bindingIndex = -1;\n  oldLFrame.currentQueryIndex = 0;\n}\n\nfunction nextContextImpl(level) {\n  var contextLView = instructionState.lFrame.contextLView = walkUpViews(level, instructionState.lFrame.contextLView);\n  return contextLView[CONTEXT];\n}\n\nfunction walkUpViews(nestingLevel, currentView) {\n  while (nestingLevel > 0) {\n    ngDevMode && assertDefined(currentView[DECLARATION_VIEW], 'Declaration view should be defined if nesting level is greater than 0.');\n    currentView = currentView[DECLARATION_VIEW];\n    nestingLevel--;\n  }\n\n  return currentView;\n}\n/**\n * Gets the currently selected element index.\n *\n * Used with {@link property} instruction (and more in the future) to identify the index in the\n * current `LView` to act on.\n */\n\n\nfunction getSelectedIndex() {\n  return instructionState.lFrame.selectedIndex;\n}\n/**\n * Sets the most recent index passed to {@link select}\n *\n * Used with {@link property} instruction (and more in the future) to identify the index in the\n * current `LView` to act on.\n *\n * (Note that if an \"exit function\" was set earlier (via `setElementExitFn()`) then that will be\n * run if and when the provided `index` value is different from the current selected index value.)\n */\n\n\nfunction setSelectedIndex(index) {\n  ngDevMode && index !== -1 && assertGreaterThanOrEqual(index, HEADER_OFFSET, 'Index must be past HEADER_OFFSET (or -1).');\n  ngDevMode && assertLessThan(index, instructionState.lFrame.lView.length, 'Can\\'t set index passed end of LView');\n  instructionState.lFrame.selectedIndex = index;\n}\n/**\n * Gets the `tNode` that represents currently selected element.\n */\n\n\nfunction getSelectedTNode() {\n  var lFrame = instructionState.lFrame;\n  return getTNode(lFrame.tView, lFrame.selectedIndex);\n}\n/**\n * Sets the namespace used to create elements to `'http://www.w3.org/2000/svg'` in global state.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵnamespaceSVG() {\n  instructionState.lFrame.currentNamespace = SVG_NAMESPACE;\n}\n/**\n * Sets the namespace used to create elements to `'http://www.w3.org/1998/MathML/'` in global state.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵnamespaceMathML() {\n  instructionState.lFrame.currentNamespace = MATH_ML_NAMESPACE;\n}\n/**\n * Sets the namespace used to create elements to `null`, which forces element creation to use\n * `createElement` rather than `createElementNS`.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵnamespaceHTML() {\n  namespaceHTMLInternal();\n}\n/**\n * Sets the namespace used to create elements to `null`, which forces element creation to use\n * `createElement` rather than `createElementNS`.\n */\n\n\nfunction namespaceHTMLInternal() {\n  instructionState.lFrame.currentNamespace = null;\n}\n\nfunction getNamespace() {\n  return instructionState.lFrame.currentNamespace;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * The Trusted Types policy, or null if Trusted Types are not\n * enabled/supported, or undefined if the policy has not been created yet.\n */\n\n\nvar policy;\n/**\n * Returns the Trusted Types policy, or null if Trusted Types are not\n * enabled/supported. The first call to this function will create the policy.\n */\n\nfunction getPolicy() {\n  if (policy === undefined) {\n    policy = null;\n\n    if (_global.trustedTypes) {\n      try {\n        policy = _global.trustedTypes.createPolicy('angular', {\n          createHTML: function createHTML(s) {\n            return s;\n          },\n          createScript: function createScript(s) {\n            return s;\n          },\n          createScriptURL: function createScriptURL(s) {\n            return s;\n          }\n        });\n      } catch (_a) {// trustedTypes.createPolicy throws if called with a name that is\n        // already registered, even in report-only mode. Until the API changes,\n        // catch the error not to break the applications functionally. In such\n        // cases, the code will fall back to using strings.\n      }\n    }\n  }\n\n  return policy;\n}\n/**\n * Unsafely promote a string to a TrustedHTML, falling back to strings when\n * Trusted Types are not available.\n * @security This is a security-sensitive function; any use of this function\n * must go through security review. In particular, it must be assured that the\n * provided string will never cause an XSS vulnerability if used in a context\n * that will be interpreted as HTML by a browser, e.g. when assigning to\n * element.innerHTML.\n */\n\n\nfunction trustedHTMLFromString(html) {\n  var _a;\n\n  return ((_a = getPolicy()) === null || _a === void 0 ? void 0 : _a.createHTML(html)) || html;\n}\n/**\n * Unsafely promote a string to a TrustedScript, falling back to strings when\n * Trusted Types are not available.\n * @security In particular, it must be assured that the provided string will\n * never cause an XSS vulnerability if used in a context that will be\n * interpreted and executed as a script by a browser, e.g. when calling eval.\n */\n\n\nfunction trustedScriptFromString(script) {\n  var _a;\n\n  return ((_a = getPolicy()) === null || _a === void 0 ? void 0 : _a.createScript(script)) || script;\n}\n/**\n * Unsafely promote a string to a TrustedScriptURL, falling back to strings\n * when Trusted Types are not available.\n * @security This is a security-sensitive function; any use of this function\n * must go through security review. In particular, it must be assured that the\n * provided string will never cause an XSS vulnerability if used in a context\n * that will cause a browser to load and execute a resource, e.g. when\n * assigning to script.src.\n */\n\n\nfunction trustedScriptURLFromString(url) {\n  var _a;\n\n  return ((_a = getPolicy()) === null || _a === void 0 ? void 0 : _a.createScriptURL(url)) || url;\n}\n/**\n * Unsafely call the Function constructor with the given string arguments. It\n * is only available in development mode, and should be stripped out of\n * production code.\n * @security This is a security-sensitive function; any use of this function\n * must go through security review. In particular, it must be assured that it\n * is only called from development code, as use in production code can lead to\n * XSS vulnerabilities.\n */\n\n\nfunction newTrustedFunctionForDev() {\n  if (typeof ngDevMode === 'undefined') {\n    throw new Error('newTrustedFunctionForDev should never be called in production');\n  }\n\n  for (var _len6 = arguments.length, args = new Array(_len6), _key6 = 0; _key6 < _len6; _key6++) {\n    args[_key6] = arguments[_key6];\n  }\n\n  if (!_global.trustedTypes) {\n    // In environments that don't support Trusted Types, fall back to the most\n    // straightforward implementation:\n    return _construct(Function, args);\n  } // Chrome currently does not support passing TrustedScript to the Function\n  // constructor. The following implements the workaround proposed on the page\n  // below, where the Chromium bug is also referenced:\n  // https://github.com/w3c/webappsec-trusted-types/wiki/Trusted-Types-for-function-constructor\n\n\n  var fnArgs = args.slice(0, -1).join(',');\n  var fnBody = args.pop().toString();\n  var body = \"(function anonymous(\".concat(fnArgs, \"\\n) { \").concat(fnBody, \"\\n})\"); // Using eval directly confuses the compiler and prevents this module from\n  // being stripped out of JS binaries even if not used. The global['eval']\n  // indirection fixes that.\n\n  var fn = _global['eval'](trustedScriptFromString(body)); // To completely mimic the behavior of calling \"new Function\", two more\n  // things need to happen:\n  // 1. Stringifying the resulting function should return its source code\n\n\n  fn.toString = function () {\n    return body;\n  }; // 2. When calling the resulting function, `this` should refer to `global`\n\n\n  return fn.bind(_global); // When Trusted Types support in Function constructors is widely available,\n  // the implementation of this function can be simplified to:\n  // return new Function(...args.map(a => trustedScriptFromString(a)));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar SafeValueImpl = /*#__PURE__*/function () {\n  function SafeValueImpl(changingThisBreaksApplicationSecurity) {\n    _classCallCheck(this, SafeValueImpl);\n\n    this.changingThisBreaksApplicationSecurity = changingThisBreaksApplicationSecurity;\n  }\n\n  _createClass2(SafeValueImpl, [{\n    key: \"toString\",\n    value: function toString() {\n      return \"SafeValue must use [property]=binding: \".concat(this.changingThisBreaksApplicationSecurity) + \" (see http://g.co/ng/security#xss)\";\n    }\n  }]);\n\n  return SafeValueImpl;\n}();\n\nvar SafeHtmlImpl = /*#__PURE__*/function (_SafeValueImpl) {\n  _inherits(SafeHtmlImpl, _SafeValueImpl);\n\n  var _super = _createSuper(SafeHtmlImpl);\n\n  function SafeHtmlImpl() {\n    _classCallCheck(this, SafeHtmlImpl);\n\n    return _super.apply(this, arguments);\n  }\n\n  _createClass2(SafeHtmlImpl, [{\n    key: \"getTypeName\",\n    value: function getTypeName() {\n      return \"HTML\"\n      /* Html */\n      ;\n    }\n  }]);\n\n  return SafeHtmlImpl;\n}(SafeValueImpl);\n\nvar SafeStyleImpl = /*#__PURE__*/function (_SafeValueImpl2) {\n  _inherits(SafeStyleImpl, _SafeValueImpl2);\n\n  var _super2 = _createSuper(SafeStyleImpl);\n\n  function SafeStyleImpl() {\n    _classCallCheck(this, SafeStyleImpl);\n\n    return _super2.apply(this, arguments);\n  }\n\n  _createClass2(SafeStyleImpl, [{\n    key: \"getTypeName\",\n    value: function getTypeName() {\n      return \"Style\"\n      /* Style */\n      ;\n    }\n  }]);\n\n  return SafeStyleImpl;\n}(SafeValueImpl);\n\nvar SafeScriptImpl = /*#__PURE__*/function (_SafeValueImpl3) {\n  _inherits(SafeScriptImpl, _SafeValueImpl3);\n\n  var _super3 = _createSuper(SafeScriptImpl);\n\n  function SafeScriptImpl() {\n    _classCallCheck(this, SafeScriptImpl);\n\n    return _super3.apply(this, arguments);\n  }\n\n  _createClass2(SafeScriptImpl, [{\n    key: \"getTypeName\",\n    value: function getTypeName() {\n      return \"Script\"\n      /* Script */\n      ;\n    }\n  }]);\n\n  return SafeScriptImpl;\n}(SafeValueImpl);\n\nvar SafeUrlImpl = /*#__PURE__*/function (_SafeValueImpl4) {\n  _inherits(SafeUrlImpl, _SafeValueImpl4);\n\n  var _super4 = _createSuper(SafeUrlImpl);\n\n  function SafeUrlImpl() {\n    _classCallCheck(this, SafeUrlImpl);\n\n    return _super4.apply(this, arguments);\n  }\n\n  _createClass2(SafeUrlImpl, [{\n    key: \"getTypeName\",\n    value: function getTypeName() {\n      return \"URL\"\n      /* Url */\n      ;\n    }\n  }]);\n\n  return SafeUrlImpl;\n}(SafeValueImpl);\n\nvar SafeResourceUrlImpl = /*#__PURE__*/function (_SafeValueImpl5) {\n  _inherits(SafeResourceUrlImpl, _SafeValueImpl5);\n\n  var _super5 = _createSuper(SafeResourceUrlImpl);\n\n  function SafeResourceUrlImpl() {\n    _classCallCheck(this, SafeResourceUrlImpl);\n\n    return _super5.apply(this, arguments);\n  }\n\n  _createClass2(SafeResourceUrlImpl, [{\n    key: \"getTypeName\",\n    value: function getTypeName() {\n      return \"ResourceURL\"\n      /* ResourceUrl */\n      ;\n    }\n  }]);\n\n  return SafeResourceUrlImpl;\n}(SafeValueImpl);\n\nfunction unwrapSafeValue(value) {\n  return value instanceof SafeValueImpl ? value.changingThisBreaksApplicationSecurity : value;\n}\n\nfunction allowSanitizationBypassAndThrow(value, type) {\n  var actualType = getSanitizationBypassType(value);\n\n  if (actualType != null && actualType !== type) {\n    // Allow ResourceURLs in URL contexts, they are strictly more trusted.\n    if (actualType === \"ResourceURL\"\n    /* ResourceUrl */\n    && type === \"URL\"\n    /* Url */\n    ) return true;\n    throw new Error(\"Required a safe \".concat(type, \", got a \").concat(actualType, \" (see http://g.co/ng/security#xss)\"));\n  }\n\n  return actualType === type;\n}\n\nfunction getSanitizationBypassType(value) {\n  return value instanceof SafeValueImpl && value.getTypeName() || null;\n}\n/**\n * Mark `html` string as trusted.\n *\n * This function wraps the trusted string in `String` and brands it in a way which makes it\n * recognizable to {@link htmlSanitizer} to be trusted implicitly.\n *\n * @param trustedHtml `html` string which needs to be implicitly trusted.\n * @returns a `html` which has been branded to be implicitly trusted.\n */\n\n\nfunction bypassSanitizationTrustHtml(trustedHtml) {\n  return new SafeHtmlImpl(trustedHtml);\n}\n/**\n * Mark `style` string as trusted.\n *\n * This function wraps the trusted string in `String` and brands it in a way which makes it\n * recognizable to {@link styleSanitizer} to be trusted implicitly.\n *\n * @param trustedStyle `style` string which needs to be implicitly trusted.\n * @returns a `style` hich has been branded to be implicitly trusted.\n */\n\n\nfunction bypassSanitizationTrustStyle(trustedStyle) {\n  return new SafeStyleImpl(trustedStyle);\n}\n/**\n * Mark `script` string as trusted.\n *\n * This function wraps the trusted string in `String` and brands it in a way which makes it\n * recognizable to {@link scriptSanitizer} to be trusted implicitly.\n *\n * @param trustedScript `script` string which needs to be implicitly trusted.\n * @returns a `script` which has been branded to be implicitly trusted.\n */\n\n\nfunction bypassSanitizationTrustScript(trustedScript) {\n  return new SafeScriptImpl(trustedScript);\n}\n/**\n * Mark `url` string as trusted.\n *\n * This function wraps the trusted string in `String` and brands it in a way which makes it\n * recognizable to {@link urlSanitizer} to be trusted implicitly.\n *\n * @param trustedUrl `url` string which needs to be implicitly trusted.\n * @returns a `url`  which has been branded to be implicitly trusted.\n */\n\n\nfunction bypassSanitizationTrustUrl(trustedUrl) {\n  return new SafeUrlImpl(trustedUrl);\n}\n/**\n * Mark `url` string as trusted.\n *\n * This function wraps the trusted string in `String` and brands it in a way which makes it\n * recognizable to {@link resourceUrlSanitizer} to be trusted implicitly.\n *\n * @param trustedResourceUrl `url` string which needs to be implicitly trusted.\n * @returns a `url` which has been branded to be implicitly trusted.\n */\n\n\nfunction bypassSanitizationTrustResourceUrl(trustedResourceUrl) {\n  return new SafeResourceUrlImpl(trustedResourceUrl);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * This file is used to control if the default rendering pipeline should be `ViewEngine` or `Ivy`.\n *\n * For more information on how to run and debug tests with either Ivy or View Engine (legacy),\n * please see [BAZEL.md](./docs/BAZEL.md).\n */\n\n\nvar _devMode = true;\nvar _runModeLocked = false;\n/**\n * Returns whether Angular is in development mode. After called once,\n * the value is locked and won't change any more.\n *\n * By default, this is true, unless a user calls `enableProdMode` before calling this.\n *\n * @publicApi\n */\n\nfunction isDevMode() {\n  _runModeLocked = true;\n  return _devMode;\n}\n/**\n * Disable Angular's development mode, which turns off assertions and other\n * checks within the framework.\n *\n * One important assertion this disables verifies that a change detection pass\n * does not result in additional changes to any bindings (also known as\n * unidirectional data flow).\n *\n * @publicApi\n */\n\n\nfunction enableProdMode() {\n  if (_runModeLocked) {\n    throw new Error('Cannot enable prod mode after platform setup.');\n  }\n\n  _devMode = false;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * This helper is used to get hold of an inert tree of DOM elements containing dirty HTML\n * that needs sanitizing.\n * Depending upon browser support we use one of two strategies for doing this.\n * Default: DOMParser strategy\n * Fallback: InertDocument strategy\n */\n\n\nfunction getInertBodyHelper(defaultDoc) {\n  return isDOMParserAvailable() ? new DOMParserHelper() : new InertDocumentHelper(defaultDoc);\n}\n/**\n * Uses DOMParser to create and fill an inert body element.\n * This is the default strategy used in browsers that support it.\n */\n\n\nvar DOMParserHelper = /*#__PURE__*/function () {\n  function DOMParserHelper() {\n    _classCallCheck(this, DOMParserHelper);\n  }\n\n  _createClass2(DOMParserHelper, [{\n    key: \"getInertBodyElement\",\n    value: function getInertBodyElement(html) {\n      // We add these extra elements to ensure that the rest of the content is parsed as expected\n      // e.g. leading whitespace is maintained and tags like `<meta>` do not get hoisted to the\n      // `<head>` tag. Note that the `<body>` tag is closed implicitly to prevent unclosed tags\n      // in `html` from consuming the otherwise explicit `</body>` tag.\n      html = '<body><remove></remove>' + html;\n\n      try {\n        var body = new window.DOMParser().parseFromString(trustedHTMLFromString(html), 'text/html').body;\n        body.removeChild(body.firstChild);\n        return body;\n      } catch (_a) {\n        return null;\n      }\n    }\n  }]);\n\n  return DOMParserHelper;\n}();\n/**\n * Use an HTML5 `template` element, if supported, or an inert body element created via\n * `createHtmlDocument` to create and fill an inert DOM element.\n * This is the fallback strategy if the browser does not support DOMParser.\n */\n\n\nvar InertDocumentHelper = /*#__PURE__*/function () {\n  function InertDocumentHelper(defaultDoc) {\n    _classCallCheck(this, InertDocumentHelper);\n\n    this.defaultDoc = defaultDoc;\n    this.inertDocument = this.defaultDoc.implementation.createHTMLDocument('sanitization-inert');\n\n    if (this.inertDocument.body == null) {\n      // usually there should be only one body element in the document, but IE doesn't have any, so\n      // we need to create one.\n      var inertHtml = this.inertDocument.createElement('html');\n      this.inertDocument.appendChild(inertHtml);\n      var inertBodyElement = this.inertDocument.createElement('body');\n      inertHtml.appendChild(inertBodyElement);\n    }\n  }\n\n  _createClass2(InertDocumentHelper, [{\n    key: \"getInertBodyElement\",\n    value: function getInertBodyElement(html) {\n      // Prefer using <template> element if supported.\n      var templateEl = this.inertDocument.createElement('template');\n\n      if ('content' in templateEl) {\n        templateEl.innerHTML = trustedHTMLFromString(html);\n        return templateEl;\n      } // Note that previously we used to do something like `this.inertDocument.body.innerHTML = html`\n      // and we returned the inert `body` node. This was changed, because IE seems to treat setting\n      // `innerHTML` on an inserted element differently, compared to one that hasn't been inserted\n      // yet. In particular, IE appears to split some of the text into multiple text nodes rather\n      // than keeping them in a single one which ends up messing with Ivy's i18n parsing further\n      // down the line. This has been worked around by creating a new inert `body` and using it as\n      // the root node in which we insert the HTML.\n\n\n      var inertBody = this.inertDocument.createElement('body');\n      inertBody.innerHTML = trustedHTMLFromString(html); // Support: IE 11 only\n      // strip custom-namespaced attributes on IE<=11\n\n      if (this.defaultDoc.documentMode) {\n        this.stripCustomNsAttrs(inertBody);\n      }\n\n      return inertBody;\n    }\n    /**\n     * When IE11 comes across an unknown namespaced attribute e.g. 'xlink:foo' it adds 'xmlns:ns1'\n     * attribute to declare ns1 namespace and prefixes the attribute with 'ns1' (e.g.\n     * 'ns1:xlink:foo').\n     *\n     * This is undesirable since we don't want to allow any of these custom attributes. This method\n     * strips them all.\n     */\n\n  }, {\n    key: \"stripCustomNsAttrs\",\n    value: function stripCustomNsAttrs(el) {\n      var elAttrs = el.attributes; // loop backwards so that we can support removals.\n\n      for (var i = elAttrs.length - 1; 0 < i; i--) {\n        var attrib = elAttrs.item(i);\n        var attrName = attrib.name;\n\n        if (attrName === 'xmlns:ns1' || attrName.indexOf('ns1:') === 0) {\n          el.removeAttribute(attrName);\n        }\n      }\n\n      var childNode = el.firstChild;\n\n      while (childNode) {\n        if (childNode.nodeType === Node.ELEMENT_NODE) this.stripCustomNsAttrs(childNode);\n        childNode = childNode.nextSibling;\n      }\n    }\n  }]);\n\n  return InertDocumentHelper;\n}();\n/**\n * We need to determine whether the DOMParser exists in the global context and\n * supports parsing HTML; HTML parsing support is not as wide as other formats, see\n * https://developer.mozilla.org/en-US/docs/Web/API/DOMParser#Browser_compatibility.\n *\n * @suppress {uselessCode}\n */\n\n\nfunction isDOMParserAvailable() {\n  try {\n    return !!new window.DOMParser().parseFromString(trustedHTMLFromString(''), 'text/html');\n  } catch (_a) {\n    return false;\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A pattern that recognizes a commonly useful subset of URLs that are safe.\n *\n * This regular expression matches a subset of URLs that will not cause script\n * execution if used in URL context within a HTML document. Specifically, this\n * regular expression matches if (comment from here on and regex copied from\n * Soy's EscapingConventions):\n * (1) Either an allowed protocol (http, https, mailto or ftp).\n * (2) or no protocol.  A protocol must be followed by a colon. The below\n *     allows that by allowing colons only after one of the characters [/?#].\n *     A colon after a hash (#) must be in the fragment.\n *     Otherwise, a colon after a (?) must be in a query.\n *     Otherwise, a colon after a single solidus (/) must be in a path.\n *     Otherwise, a colon after a double solidus (//) must be in the authority\n *     (before port).\n *\n * The pattern disallows &, used in HTML entity declarations before\n * one of the characters in [/?#]. This disallows HTML entities used in the\n * protocol name, which should never happen, e.g. \"h&#116;tp\" for \"http\".\n * It also disallows HTML entities in the first path part of a relative path,\n * e.g. \"foo&lt;bar/baz\".  Our existing escaping functions should not produce\n * that. More importantly, it disallows masking of a colon,\n * e.g. \"javascript&#58;...\".\n *\n * This regular expression was taken from the Closure sanitization library.\n */\n\n\nvar SAFE_URL_PATTERN = /^(?:(?:https?|mailto|ftp|tel|file|sms):|[^&:/?#]*(?:[/?#]|$))/gi;\n/* A pattern that matches safe srcset values */\n\nvar SAFE_SRCSET_PATTERN = /^(?:(?:https?|file):|[^&:/?#]*(?:[/?#]|$))/gi;\n/** A pattern that matches safe data URLs. Only matches image, video and audio types. */\n\nvar DATA_URL_PATTERN = /^data:(?:image\\/(?:bmp|gif|jpeg|jpg|png|tiff|webp)|video\\/(?:mpeg|mp4|ogg|webm)|audio\\/(?:mp3|oga|ogg|opus));base64,[a-z0-9+\\/]+=*$/i;\n\nfunction _sanitizeUrl(url) {\n  url = String(url);\n  if (url.match(SAFE_URL_PATTERN) || url.match(DATA_URL_PATTERN)) return url;\n\n  if (isDevMode()) {\n    console.warn(\"WARNING: sanitizing unsafe URL value \".concat(url, \" (see http://g.co/ng/security#xss)\"));\n  }\n\n  return 'unsafe:' + url;\n}\n\nfunction sanitizeSrcset(srcset) {\n  srcset = String(srcset);\n  return srcset.split(',').map(function (srcset) {\n    return _sanitizeUrl(srcset.trim());\n  }).join(', ');\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction tagSet(tags) {\n  var res = {};\n\n  var _iterator = _createForOfIteratorHelper(tags.split(',')),\n      _step;\n\n  try {\n    for (_iterator.s(); !(_step = _iterator.n()).done;) {\n      var t = _step.value;\n      res[t] = true;\n    }\n  } catch (err) {\n    _iterator.e(err);\n  } finally {\n    _iterator.f();\n  }\n\n  return res;\n}\n\nfunction merge() {\n  var res = {};\n\n  for (var _len7 = arguments.length, sets = new Array(_len7), _key7 = 0; _key7 < _len7; _key7++) {\n    sets[_key7] = arguments[_key7];\n  }\n\n  for (var _i = 0, _sets = sets; _i < _sets.length; _i++) {\n    var s = _sets[_i];\n\n    for (var v in s) {\n      if (s.hasOwnProperty(v)) res[v] = true;\n    }\n  }\n\n  return res;\n} // Good source of info about elements and attributes\n// http://dev.w3.org/html5/spec/Overview.html#semantics\n// http://simon.html5.org/html-elements\n// Safe Void Elements - HTML5\n// http://dev.w3.org/html5/spec/Overview.html#void-elements\n\n\nvar VOID_ELEMENTS = tagSet('area,br,col,hr,img,wbr'); // Elements that you can, intentionally, leave open (and which close themselves)\n// http://dev.w3.org/html5/spec/Overview.html#optional-tags\n\nvar OPTIONAL_END_TAG_BLOCK_ELEMENTS = tagSet('colgroup,dd,dt,li,p,tbody,td,tfoot,th,thead,tr');\nvar OPTIONAL_END_TAG_INLINE_ELEMENTS = tagSet('rp,rt');\nvar OPTIONAL_END_TAG_ELEMENTS = merge(OPTIONAL_END_TAG_INLINE_ELEMENTS, OPTIONAL_END_TAG_BLOCK_ELEMENTS); // Safe Block Elements - HTML5\n\nvar BLOCK_ELEMENTS = merge(OPTIONAL_END_TAG_BLOCK_ELEMENTS, tagSet('address,article,' + 'aside,blockquote,caption,center,del,details,dialog,dir,div,dl,figure,figcaption,footer,h1,h2,h3,h4,h5,' + 'h6,header,hgroup,hr,ins,main,map,menu,nav,ol,pre,section,summary,table,ul')); // Inline Elements - HTML5\n\nvar INLINE_ELEMENTS = merge(OPTIONAL_END_TAG_INLINE_ELEMENTS, tagSet('a,abbr,acronym,audio,b,' + 'bdi,bdo,big,br,cite,code,del,dfn,em,font,i,img,ins,kbd,label,map,mark,picture,q,ruby,rp,rt,s,' + 'samp,small,source,span,strike,strong,sub,sup,time,track,tt,u,var,video'));\nvar VALID_ELEMENTS = merge(VOID_ELEMENTS, BLOCK_ELEMENTS, INLINE_ELEMENTS, OPTIONAL_END_TAG_ELEMENTS); // Attributes that have href and hence need to be sanitized\n\nvar URI_ATTRS = tagSet('background,cite,href,itemtype,longdesc,poster,src,xlink:href'); // Attributes that have special href set hence need to be sanitized\n\nvar SRCSET_ATTRS = tagSet('srcset');\nvar HTML_ATTRS = tagSet('abbr,accesskey,align,alt,autoplay,axis,bgcolor,border,cellpadding,cellspacing,class,clear,color,cols,colspan,' + 'compact,controls,coords,datetime,default,dir,download,face,headers,height,hidden,hreflang,hspace,' + 'ismap,itemscope,itemprop,kind,label,lang,language,loop,media,muted,nohref,nowrap,open,preload,rel,rev,role,rows,rowspan,rules,' + 'scope,scrolling,shape,size,sizes,span,srclang,start,summary,tabindex,target,title,translate,type,usemap,' + 'valign,value,vspace,width'); // Accessibility attributes as per WAI-ARIA 1.1 (W3C Working Draft 14 December 2018)\n\nvar ARIA_ATTRS = tagSet('aria-activedescendant,aria-atomic,aria-autocomplete,aria-busy,aria-checked,aria-colcount,aria-colindex,' + 'aria-colspan,aria-controls,aria-current,aria-describedby,aria-details,aria-disabled,aria-dropeffect,' + 'aria-errormessage,aria-expanded,aria-flowto,aria-grabbed,aria-haspopup,aria-hidden,aria-invalid,' + 'aria-keyshortcuts,aria-label,aria-labelledby,aria-level,aria-live,aria-modal,aria-multiline,' + 'aria-multiselectable,aria-orientation,aria-owns,aria-placeholder,aria-posinset,aria-pressed,aria-readonly,' + 'aria-relevant,aria-required,aria-roledescription,aria-rowcount,aria-rowindex,aria-rowspan,aria-selected,' + 'aria-setsize,aria-sort,aria-valuemax,aria-valuemin,aria-valuenow,aria-valuetext'); // NB: This currently consciously doesn't support SVG. SVG sanitization has had several security\n// issues in the past, so it seems safer to leave it out if possible. If support for binding SVG via\n// innerHTML is required, SVG attributes should be added here.\n// NB: Sanitization does not allow <form> elements or other active elements (<button> etc). Those\n// can be sanitized, but they increase security surface area without a legitimate use case, so they\n// are left out here.\n\nvar VALID_ATTRS = merge(URI_ATTRS, SRCSET_ATTRS, HTML_ATTRS, ARIA_ATTRS); // Elements whose content should not be traversed/preserved, if the elements themselves are invalid.\n//\n// Typically, `<invalid>Some content</invalid>` would traverse (and in this case preserve)\n// `Some content`, but strip `invalid-element` opening/closing tags. For some elements, though, we\n// don't want to preserve the content, if the elements themselves are going to be removed.\n\nvar SKIP_TRAVERSING_CONTENT_IF_INVALID_ELEMENTS = tagSet('script,style,template');\n/**\n * SanitizingHtmlSerializer serializes a DOM fragment, stripping out any unsafe elements and unsafe\n * attributes.\n */\n\nvar SanitizingHtmlSerializer = /*#__PURE__*/function () {\n  function SanitizingHtmlSerializer() {\n    _classCallCheck(this, SanitizingHtmlSerializer);\n\n    // Explicitly track if something was stripped, to avoid accidentally warning of sanitization just\n    // because characters were re-encoded.\n    this.sanitizedSomething = false;\n    this.buf = [];\n  }\n\n  _createClass2(SanitizingHtmlSerializer, [{\n    key: \"sanitizeChildren\",\n    value: function sanitizeChildren(el) {\n      // This cannot use a TreeWalker, as it has to run on Angular's various DOM adapters.\n      // However this code never accesses properties off of `document` before deleting its contents\n      // again, so it shouldn't be vulnerable to DOM clobbering.\n      var current = el.firstChild;\n      var traverseContent = true;\n\n      while (current) {\n        if (current.nodeType === Node.ELEMENT_NODE) {\n          traverseContent = this.startElement(current);\n        } else if (current.nodeType === Node.TEXT_NODE) {\n          this.chars(current.nodeValue);\n        } else {\n          // Strip non-element, non-text nodes.\n          this.sanitizedSomething = true;\n        }\n\n        if (traverseContent && current.firstChild) {\n          current = current.firstChild;\n          continue;\n        }\n\n        while (current) {\n          // Leaving the element. Walk up and to the right, closing tags as we go.\n          if (current.nodeType === Node.ELEMENT_NODE) {\n            this.endElement(current);\n          }\n\n          var next = this.checkClobberedElement(current, current.nextSibling);\n\n          if (next) {\n            current = next;\n            break;\n          }\n\n          current = this.checkClobberedElement(current, current.parentNode);\n        }\n      }\n\n      return this.buf.join('');\n    }\n    /**\n     * Sanitizes an opening element tag (if valid) and returns whether the element's contents should\n     * be traversed. Element content must always be traversed (even if the element itself is not\n     * valid/safe), unless the element is one of `SKIP_TRAVERSING_CONTENT_IF_INVALID_ELEMENTS`.\n     *\n     * @param element The element to sanitize.\n     * @return True if the element's contents should be traversed.\n     */\n\n  }, {\n    key: \"startElement\",\n    value: function startElement(element) {\n      var tagName = element.nodeName.toLowerCase();\n\n      if (!VALID_ELEMENTS.hasOwnProperty(tagName)) {\n        this.sanitizedSomething = true;\n        return !SKIP_TRAVERSING_CONTENT_IF_INVALID_ELEMENTS.hasOwnProperty(tagName);\n      }\n\n      this.buf.push('<');\n      this.buf.push(tagName);\n      var elAttrs = element.attributes;\n\n      for (var i = 0; i < elAttrs.length; i++) {\n        var elAttr = elAttrs.item(i);\n        var attrName = elAttr.name;\n        var lower = attrName.toLowerCase();\n\n        if (!VALID_ATTRS.hasOwnProperty(lower)) {\n          this.sanitizedSomething = true;\n          continue;\n        }\n\n        var value = elAttr.value; // TODO(martinprobst): Special case image URIs for data:image/...\n\n        if (URI_ATTRS[lower]) value = _sanitizeUrl(value);\n        if (SRCSET_ATTRS[lower]) value = sanitizeSrcset(value);\n        this.buf.push(' ', attrName, '=\"', encodeEntities(value), '\"');\n      }\n\n      this.buf.push('>');\n      return true;\n    }\n  }, {\n    key: \"endElement\",\n    value: function endElement(current) {\n      var tagName = current.nodeName.toLowerCase();\n\n      if (VALID_ELEMENTS.hasOwnProperty(tagName) && !VOID_ELEMENTS.hasOwnProperty(tagName)) {\n        this.buf.push('</');\n        this.buf.push(tagName);\n        this.buf.push('>');\n      }\n    }\n  }, {\n    key: \"chars\",\n    value: function chars(_chars) {\n      this.buf.push(encodeEntities(_chars));\n    }\n  }, {\n    key: \"checkClobberedElement\",\n    value: function checkClobberedElement(node, nextNode) {\n      if (nextNode && (node.compareDocumentPosition(nextNode) & Node.DOCUMENT_POSITION_CONTAINED_BY) === Node.DOCUMENT_POSITION_CONTAINED_BY) {\n        throw new Error(\"Failed to sanitize html because the element is clobbered: \".concat(node.outerHTML));\n      }\n\n      return nextNode;\n    }\n  }]);\n\n  return SanitizingHtmlSerializer;\n}(); // Regular Expressions for parsing tags and attributes\n\n\nvar SURROGATE_PAIR_REGEXP = /[\\uD800-\\uDBFF][\\uDC00-\\uDFFF]/g; // ! to ~ is the ASCII range.\n\nvar NON_ALPHANUMERIC_REGEXP = /([^\\#-~ |!])/g;\n/**\n * Escapes all potentially dangerous characters, so that the\n * resulting string can be safely inserted into attribute or\n * element text.\n * @param value\n */\n\nfunction encodeEntities(value) {\n  return value.replace(/&/g, '&amp;').replace(SURROGATE_PAIR_REGEXP, function (match) {\n    var hi = match.charCodeAt(0);\n    var low = match.charCodeAt(1);\n    return '&#' + ((hi - 0xD800) * 0x400 + (low - 0xDC00) + 0x10000) + ';';\n  }).replace(NON_ALPHANUMERIC_REGEXP, function (match) {\n    return '&#' + match.charCodeAt(0) + ';';\n  }).replace(/</g, '&lt;').replace(/>/g, '&gt;');\n}\n\nvar inertBodyHelper;\n/**\n * Sanitizes the given unsafe, untrusted HTML fragment, and returns HTML text that is safe to add to\n * the DOM in a browser environment.\n */\n\nfunction _sanitizeHtml(defaultDoc, unsafeHtmlInput) {\n  var inertBodyElement = null;\n\n  try {\n    inertBodyHelper = inertBodyHelper || getInertBodyHelper(defaultDoc); // Make sure unsafeHtml is actually a string (TypeScript types are not enforced at runtime).\n\n    var unsafeHtml = unsafeHtmlInput ? String(unsafeHtmlInput) : '';\n    inertBodyElement = inertBodyHelper.getInertBodyElement(unsafeHtml); // mXSS protection. Repeatedly parse the document to make sure it stabilizes, so that a browser\n    // trying to auto-correct incorrect HTML cannot cause formerly inert HTML to become dangerous.\n\n    var mXSSAttempts = 5;\n    var parsedHtml = unsafeHtml;\n\n    do {\n      if (mXSSAttempts === 0) {\n        throw new Error('Failed to sanitize html because the input is unstable');\n      }\n\n      mXSSAttempts--;\n      unsafeHtml = parsedHtml;\n      parsedHtml = inertBodyElement.innerHTML;\n      inertBodyElement = inertBodyHelper.getInertBodyElement(unsafeHtml);\n    } while (unsafeHtml !== parsedHtml);\n\n    var sanitizer = new SanitizingHtmlSerializer();\n    var safeHtml = sanitizer.sanitizeChildren(getTemplateContent(inertBodyElement) || inertBodyElement);\n\n    if (isDevMode() && sanitizer.sanitizedSomething) {\n      console.warn('WARNING: sanitizing HTML stripped some content, see http://g.co/ng/security#xss');\n    }\n\n    return safeHtml;\n  } finally {\n    // In case anything goes wrong, clear out inertElement to reset the entire DOM structure.\n    if (inertBodyElement) {\n      var parent = getTemplateContent(inertBodyElement) || inertBodyElement;\n\n      while (parent.firstChild) {\n        parent.removeChild(parent.firstChild);\n      }\n    }\n  }\n}\n\nfunction getTemplateContent(el) {\n  return 'content' in el\n  /** Microsoft/TypeScript#21517 */\n  && isTemplateElement(el) ? el.content : null;\n}\n\nfunction isTemplateElement(el) {\n  return el.nodeType === Node.ELEMENT_NODE && el.nodeName === 'TEMPLATE';\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A SecurityContext marks a location that has dangerous security implications, e.g. a DOM property\n * like `innerHTML` that could cause Cross Site Scripting (XSS) security bugs when improperly\n * handled.\n *\n * See DomSanitizer for more details on security in Angular applications.\n *\n * @publicApi\n */\n\n\nvar SecurityContext;\n\n(function (SecurityContext) {\n  SecurityContext[SecurityContext[\"NONE\"] = 0] = \"NONE\";\n  SecurityContext[SecurityContext[\"HTML\"] = 1] = \"HTML\";\n  SecurityContext[SecurityContext[\"STYLE\"] = 2] = \"STYLE\";\n  SecurityContext[SecurityContext[\"SCRIPT\"] = 3] = \"SCRIPT\";\n  SecurityContext[SecurityContext[\"URL\"] = 4] = \"URL\";\n  SecurityContext[SecurityContext[\"RESOURCE_URL\"] = 5] = \"RESOURCE_URL\";\n})(SecurityContext || (SecurityContext = {}));\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * An `html` sanitizer which converts untrusted `html` **string** into trusted string by removing\n * dangerous content.\n *\n * This method parses the `html` and locates potentially dangerous content (such as urls and\n * javascript) and removes it.\n *\n * It is possible to mark a string as trusted by calling {@link bypassSanitizationTrustHtml}.\n *\n * @param unsafeHtml untrusted `html`, typically from the user.\n * @returns `html` string which is safe to display to user, because all of the dangerous javascript\n * and urls have been removed.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵsanitizeHtml(unsafeHtml) {\n  var sanitizer = getSanitizer();\n\n  if (sanitizer) {\n    return sanitizer.sanitize(SecurityContext.HTML, unsafeHtml) || '';\n  }\n\n  if (allowSanitizationBypassAndThrow(unsafeHtml, \"HTML\"\n  /* Html */\n  )) {\n    return unwrapSafeValue(unsafeHtml);\n  }\n\n  return _sanitizeHtml(getDocument(), renderStringify(unsafeHtml));\n}\n/**\n * A `style` sanitizer which converts untrusted `style` **string** into trusted string by removing\n * dangerous content.\n *\n * It is possible to mark a string as trusted by calling {@link bypassSanitizationTrustStyle}.\n *\n * @param unsafeStyle untrusted `style`, typically from the user.\n * @returns `style` string which is safe to bind to the `style` properties.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵsanitizeStyle(unsafeStyle) {\n  var sanitizer = getSanitizer();\n\n  if (sanitizer) {\n    return sanitizer.sanitize(SecurityContext.STYLE, unsafeStyle) || '';\n  }\n\n  if (allowSanitizationBypassAndThrow(unsafeStyle, \"Style\"\n  /* Style */\n  )) {\n    return unwrapSafeValue(unsafeStyle);\n  }\n\n  return renderStringify(unsafeStyle);\n}\n/**\n * A `url` sanitizer which converts untrusted `url` **string** into trusted string by removing\n * dangerous\n * content.\n *\n * This method parses the `url` and locates potentially dangerous content (such as javascript) and\n * removes it.\n *\n * It is possible to mark a string as trusted by calling {@link bypassSanitizationTrustUrl}.\n *\n * @param unsafeUrl untrusted `url`, typically from the user.\n * @returns `url` string which is safe to bind to the `src` properties such as `<img src>`, because\n * all of the dangerous javascript has been removed.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵsanitizeUrl(unsafeUrl) {\n  var sanitizer = getSanitizer();\n\n  if (sanitizer) {\n    return sanitizer.sanitize(SecurityContext.URL, unsafeUrl) || '';\n  }\n\n  if (allowSanitizationBypassAndThrow(unsafeUrl, \"URL\"\n  /* Url */\n  )) {\n    return unwrapSafeValue(unsafeUrl);\n  }\n\n  return _sanitizeUrl(renderStringify(unsafeUrl));\n}\n/**\n * A `url` sanitizer which only lets trusted `url`s through.\n *\n * This passes only `url`s marked trusted by calling {@link bypassSanitizationTrustResourceUrl}.\n *\n * @param unsafeResourceUrl untrusted `url`, typically from the user.\n * @returns `url` string which is safe to bind to the `src` properties such as `<img src>`, because\n * only trusted `url`s have been allowed to pass.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵsanitizeResourceUrl(unsafeResourceUrl) {\n  var sanitizer = getSanitizer();\n\n  if (sanitizer) {\n    return sanitizer.sanitize(SecurityContext.RESOURCE_URL, unsafeResourceUrl) || '';\n  }\n\n  if (allowSanitizationBypassAndThrow(unsafeResourceUrl, \"ResourceURL\"\n  /* ResourceUrl */\n  )) {\n    return unwrapSafeValue(unsafeResourceUrl);\n  }\n\n  throw new Error('unsafe value used in a resource URL context (see http://g.co/ng/security#xss)');\n}\n/**\n * A `script` sanitizer which only lets trusted javascript through.\n *\n * This passes only `script`s marked trusted by calling {@link\n * bypassSanitizationTrustScript}.\n *\n * @param unsafeScript untrusted `script`, typically from the user.\n * @returns `url` string which is safe to bind to the `<script>` element such as `<img src>`,\n * because only trusted `scripts` have been allowed to pass.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵsanitizeScript(unsafeScript) {\n  var sanitizer = getSanitizer();\n\n  if (sanitizer) {\n    return sanitizer.sanitize(SecurityContext.SCRIPT, unsafeScript) || '';\n  }\n\n  if (allowSanitizationBypassAndThrow(unsafeScript, \"Script\"\n  /* Script */\n  )) {\n    return unwrapSafeValue(unsafeScript);\n  }\n\n  throw new Error('unsafe value used in a script context');\n}\n/**\n * Promotes the given constant string to a TrustedHTML.\n * @param html constant string containing trusted HTML.\n * @returns TrustedHTML wrapping `html`.\n *\n * @security This is a security-sensitive function and should only be used to\n * convert constant values of attributes and properties found in\n * application-provided Angular templates to TrustedHTML.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵtrustConstantHtml(html) {\n  return trustedHTMLFromString(html);\n}\n/**\n * Promotes the given constant string to a TrustedScript.\n * @param script constant string containing a trusted script.\n * @returns TrustedScript wrapping `script`.\n *\n * @security This is a security-sensitive function and should only be used to\n * convert constant values of attributes and properties found in\n * application-provided Angular templates to TrustedScript.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵtrustConstantScript(script) {\n  return trustedScriptFromString(script);\n}\n/**\n * Promotes the given constant string to a TrustedScriptURL.\n * @param url constant string containing a trusted script URL.\n * @returns TrustedScriptURL wrapping `url`.\n *\n * @security This is a security-sensitive function and should only be used to\n * convert constant values of attributes and properties found in\n * application-provided Angular templates to TrustedScriptURL.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵtrustConstantResourceUrl(url) {\n  return trustedScriptURLFromString(url);\n}\n/**\n * Detects which sanitizer to use for URL property, based on tag name and prop name.\n *\n * The rules are based on the RESOURCE_URL context config from\n * `packages/compiler/src/schema/dom_security_schema.ts`.\n * If tag and prop names don't match Resource URL schema, use URL sanitizer.\n */\n\n\nfunction getUrlSanitizer(tag, prop) {\n  if (prop === 'src' && (tag === 'embed' || tag === 'frame' || tag === 'iframe' || tag === 'media' || tag === 'script') || prop === 'href' && (tag === 'base' || tag === 'link')) {\n    return ɵɵsanitizeResourceUrl;\n  }\n\n  return ɵɵsanitizeUrl;\n}\n/**\n * Sanitizes URL, selecting sanitizer function based on tag and property names.\n *\n * This function is used in case we can't define security context at compile time, when only prop\n * name is available. This happens when we generate host bindings for Directives/Components. The\n * host element is unknown at compile time, so we defer calculation of specific sanitizer to\n * runtime.\n *\n * @param unsafeUrl untrusted `url`, typically from the user.\n * @param tag target element tag name.\n * @param prop name of the property that contains the value.\n * @returns `url` string which is safe to bind.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵsanitizeUrlOrResourceUrl(unsafeUrl, tag, prop) {\n  return getUrlSanitizer(tag, prop)(unsafeUrl);\n}\n\nfunction validateAgainstEventProperties(name) {\n  if (name.toLowerCase().startsWith('on')) {\n    var msg = \"Binding to event property '\".concat(name, \"' is disallowed for security reasons, \") + \"please use (\".concat(name.slice(2), \")=...\") + \"\\nIf '\".concat(name, \"' is a directive input, make sure the directive is imported by the\") + \" current module.\";\n    throw new Error(msg);\n  }\n}\n\nfunction validateAgainstEventAttributes(name) {\n  if (name.toLowerCase().startsWith('on')) {\n    var msg = \"Binding to event attribute '\".concat(name, \"' is disallowed for security reasons, \") + \"please use (\".concat(name.slice(2), \")=...\");\n    throw new Error(msg);\n  }\n}\n\nfunction getSanitizer() {\n  var lView = getLView();\n  return lView && lView[SANITIZER];\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction getFactoryDef(type, throwNotFound) {\n  var hasFactoryDef = type.hasOwnProperty(NG_FACTORY_DEF);\n\n  if (!hasFactoryDef && throwNotFound === true && ngDevMode) {\n    throw new Error(\"Type \".concat(stringify(type), \" does not have '\\u0275fac' property.\"));\n  }\n\n  return hasFactoryDef ? type[NG_FACTORY_DEF] : null;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar RuntimeError = /*#__PURE__*/function (_Error) {\n  _inherits(RuntimeError, _Error);\n\n  var _super6 = _createSuper(RuntimeError);\n\n  function RuntimeError(code, message) {\n    var _this;\n\n    _classCallCheck(this, RuntimeError);\n\n    _this = _super6.call(this, formatRuntimeError(code, message));\n    _this.code = code;\n    return _this;\n  }\n\n  return _createClass2(RuntimeError);\n}( /*#__PURE__*/_wrapNativeSuper(Error));\n/** Called to format a runtime error */\n\n\nfunction formatRuntimeError(code, message) {\n  var fullCode = code ? \"NG0\".concat(code, \": \") : '';\n  return \"\".concat(fullCode).concat(message);\n}\n/** Called when directives inject each other (creating a circular dependency) */\n\n\nfunction throwCyclicDependencyError(token, path) {\n  var depPath = path ? \". Dependency path: \".concat(path.join(' > '), \" > \").concat(token) : '';\n  throw new RuntimeError(\"200\"\n  /* CYCLIC_DI_DEPENDENCY */\n  , \"Circular dependency in DI detected for \".concat(token).concat(depPath));\n}\n\nfunction throwMixedMultiProviderError() {\n  throw new Error(\"Cannot mix multi providers and regular providers\");\n}\n\nfunction throwInvalidProviderError(ngModuleType, providers, provider) {\n  var ngModuleDetail = '';\n\n  if (ngModuleType && providers) {\n    var providerDetail = providers.map(function (v) {\n      return v == provider ? '?' + provider + '?' : '...';\n    });\n    ngModuleDetail = \" - only instances of Provider and Type are allowed, got: [\".concat(providerDetail.join(', '), \"]\");\n  }\n\n  throw new Error(\"Invalid provider for the NgModule '\".concat(stringify(ngModuleType), \"'\") + ngModuleDetail);\n}\n/** Throws an error when a token is not found in DI. */\n\n\nfunction throwProviderNotFoundError(token, injectorName) {\n  var injectorDetails = injectorName ? \" in \".concat(injectorName) : '';\n  throw new RuntimeError(\"201\"\n  /* PROVIDER_NOT_FOUND */\n  , \"No provider for \".concat(stringifyForError(token), \" found\").concat(injectorDetails));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Represents a basic change from a previous to a new value for a single\n * property on a directive instance. Passed as a value in a\n * {@link SimpleChanges} object to the `ngOnChanges` hook.\n *\n * @see `OnChanges`\n *\n * @publicApi\n */\n\n\nvar SimpleChange = /*#__PURE__*/function () {\n  function SimpleChange(previousValue, currentValue, firstChange) {\n    _classCallCheck(this, SimpleChange);\n\n    this.previousValue = previousValue;\n    this.currentValue = currentValue;\n    this.firstChange = firstChange;\n  }\n  /**\n   * Check whether the new value is the first value assigned.\n   */\n\n\n  _createClass2(SimpleChange, [{\n    key: \"isFirstChange\",\n    value: function isFirstChange() {\n      return this.firstChange;\n    }\n  }]);\n\n  return SimpleChange;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * The NgOnChangesFeature decorates a component with support for the ngOnChanges\n * lifecycle hook, so it should be included in any component that implements\n * that hook.\n *\n * If the component or directive uses inheritance, the NgOnChangesFeature MUST\n * be included as a feature AFTER {@link InheritDefinitionFeature}, otherwise\n * inherited properties will not be propagated to the ngOnChanges lifecycle\n * hook.\n *\n * Example usage:\n *\n * ```\n * static ɵcmp = defineComponent({\n *   ...\n *   inputs: {name: 'publicName'},\n *   features: [NgOnChangesFeature]\n * });\n * ```\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵNgOnChangesFeature() {\n  return NgOnChangesFeatureImpl;\n}\n\nfunction NgOnChangesFeatureImpl(definition) {\n  if (definition.type.prototype.ngOnChanges) {\n    definition.setInput = ngOnChangesSetInput;\n  }\n\n  return rememberChangeHistoryAndInvokeOnChangesHook;\n} // This option ensures that the ngOnChanges lifecycle hook will be inherited\n// from superclasses (in InheritDefinitionFeature).\n\n/** @nocollapse */\n// tslint:disable-next-line:no-toplevel-property-access\n\n\nɵɵNgOnChangesFeature.ngInherit = true;\n/**\n * This is a synthetic lifecycle hook which gets inserted into `TView.preOrderHooks` to simulate\n * `ngOnChanges`.\n *\n * The hook reads the `NgSimpleChangesStore` data from the component instance and if changes are\n * found it invokes `ngOnChanges` on the component instance.\n *\n * @param this Component instance. Because this function gets inserted into `TView.preOrderHooks`,\n *     it is guaranteed to be called with component instance.\n */\n\nfunction rememberChangeHistoryAndInvokeOnChangesHook() {\n  var simpleChangesStore = getSimpleChangesStore(this);\n  var current = simpleChangesStore === null || simpleChangesStore === void 0 ? void 0 : simpleChangesStore.current;\n\n  if (current) {\n    var previous = simpleChangesStore.previous;\n\n    if (previous === EMPTY_OBJ) {\n      simpleChangesStore.previous = current;\n    } else {\n      // New changes are copied to the previous store, so that we don't lose history for inputs\n      // which were not changed this time\n      for (var key in current) {\n        previous[key] = current[key];\n      }\n    }\n\n    simpleChangesStore.current = null;\n    this.ngOnChanges(current);\n  }\n}\n\nfunction ngOnChangesSetInput(instance, value, publicName, privateName) {\n  var simpleChangesStore = getSimpleChangesStore(instance) || setSimpleChangesStore(instance, {\n    previous: EMPTY_OBJ,\n    current: null\n  });\n  var current = simpleChangesStore.current || (simpleChangesStore.current = {});\n  var previous = simpleChangesStore.previous;\n  var declaredName = this.declaredInputs[publicName];\n  var previousChange = previous[declaredName];\n  current[declaredName] = new SimpleChange(previousChange && previousChange.currentValue, value, previous === EMPTY_OBJ);\n  instance[privateName] = value;\n}\n\nvar SIMPLE_CHANGES_STORE = '__ngSimpleChanges__';\n\nfunction getSimpleChangesStore(instance) {\n  return instance[SIMPLE_CHANGES_STORE] || null;\n}\n\nfunction setSimpleChangesStore(instance, store) {\n  return instance[SIMPLE_CHANGES_STORE] = store;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Adds all directive lifecycle hooks from the given `DirectiveDef` to the given `TView`.\n *\n * Must be run *only* on the first template pass.\n *\n * Sets up the pre-order hooks on the provided `tView`,\n * see {@link HookData} for details about the data structure.\n *\n * @param directiveIndex The index of the directive in LView\n * @param directiveDef The definition containing the hooks to setup in tView\n * @param tView The current TView\n */\n\n\nfunction registerPreOrderHooks(directiveIndex, directiveDef, tView) {\n  ngDevMode && assertFirstCreatePass(tView);\n  var _directiveDef$type$pr = directiveDef.type.prototype,\n      ngOnChanges = _directiveDef$type$pr.ngOnChanges,\n      ngOnInit = _directiveDef$type$pr.ngOnInit,\n      ngDoCheck = _directiveDef$type$pr.ngDoCheck;\n\n  if (ngOnChanges) {\n    var wrappedOnChanges = NgOnChangesFeatureImpl(directiveDef);\n    (tView.preOrderHooks || (tView.preOrderHooks = [])).push(directiveIndex, wrappedOnChanges);\n    (tView.preOrderCheckHooks || (tView.preOrderCheckHooks = [])).push(directiveIndex, wrappedOnChanges);\n  }\n\n  if (ngOnInit) {\n    (tView.preOrderHooks || (tView.preOrderHooks = [])).push(0 - directiveIndex, ngOnInit);\n  }\n\n  if (ngDoCheck) {\n    (tView.preOrderHooks || (tView.preOrderHooks = [])).push(directiveIndex, ngDoCheck);\n    (tView.preOrderCheckHooks || (tView.preOrderCheckHooks = [])).push(directiveIndex, ngDoCheck);\n  }\n}\n/**\n *\n * Loops through the directives on the provided `tNode` and queues hooks to be\n * run that are not initialization hooks.\n *\n * Should be executed during `elementEnd()` and similar to\n * preserve hook execution order. Content, view, and destroy hooks for projected\n * components and directives must be called *before* their hosts.\n *\n * Sets up the content, view, and destroy hooks on the provided `tView`,\n * see {@link HookData} for details about the data structure.\n *\n * NOTE: This does not set up `onChanges`, `onInit` or `doCheck`, those are set up\n * separately at `elementStart`.\n *\n * @param tView The current TView\n * @param tNode The TNode whose directives are to be searched for hooks to queue\n */\n\n\nfunction registerPostOrderHooks(tView, tNode) {\n  ngDevMode && assertFirstCreatePass(tView); // It's necessary to loop through the directives at elementEnd() (rather than processing in\n  // directiveCreate) so we can preserve the current hook order. Content, view, and destroy\n  // hooks for projected components and directives must be called *before* their hosts.\n\n  for (var i = tNode.directiveStart, end = tNode.directiveEnd; i < end; i++) {\n    var _directiveDef = tView.data[i];\n    ngDevMode && assertDefined(_directiveDef, 'Expecting DirectiveDef');\n    var lifecycleHooks = _directiveDef.type.prototype;\n    var ngAfterContentInit = lifecycleHooks.ngAfterContentInit,\n        ngAfterContentChecked = lifecycleHooks.ngAfterContentChecked,\n        ngAfterViewInit = lifecycleHooks.ngAfterViewInit,\n        ngAfterViewChecked = lifecycleHooks.ngAfterViewChecked,\n        ngOnDestroy = lifecycleHooks.ngOnDestroy;\n\n    if (ngAfterContentInit) {\n      (tView.contentHooks || (tView.contentHooks = [])).push(-i, ngAfterContentInit);\n    }\n\n    if (ngAfterContentChecked) {\n      (tView.contentHooks || (tView.contentHooks = [])).push(i, ngAfterContentChecked);\n      (tView.contentCheckHooks || (tView.contentCheckHooks = [])).push(i, ngAfterContentChecked);\n    }\n\n    if (ngAfterViewInit) {\n      (tView.viewHooks || (tView.viewHooks = [])).push(-i, ngAfterViewInit);\n    }\n\n    if (ngAfterViewChecked) {\n      (tView.viewHooks || (tView.viewHooks = [])).push(i, ngAfterViewChecked);\n      (tView.viewCheckHooks || (tView.viewCheckHooks = [])).push(i, ngAfterViewChecked);\n    }\n\n    if (ngOnDestroy != null) {\n      (tView.destroyHooks || (tView.destroyHooks = [])).push(i, ngOnDestroy);\n    }\n  }\n}\n/**\n * Executing hooks requires complex logic as we need to deal with 2 constraints.\n *\n * 1. Init hooks (ngOnInit, ngAfterContentInit, ngAfterViewInit) must all be executed once and only\n * once, across many change detection cycles. This must be true even if some hooks throw, or if\n * some recursively trigger a change detection cycle.\n * To solve that, it is required to track the state of the execution of these init hooks.\n * This is done by storing and maintaining flags in the view: the {@link InitPhaseState},\n * and the index within that phase. They can be seen as a cursor in the following structure:\n * [[onInit1, onInit2], [afterContentInit1], [afterViewInit1, afterViewInit2, afterViewInit3]]\n * They are are stored as flags in LView[FLAGS].\n *\n * 2. Pre-order hooks can be executed in batches, because of the select instruction.\n * To be able to pause and resume their execution, we also need some state about the hook's array\n * that is being processed:\n * - the index of the next hook to be executed\n * - the number of init hooks already found in the processed part of the  array\n * They are are stored as flags in LView[PREORDER_HOOK_FLAGS].\n */\n\n/**\n * Executes pre-order check hooks ( OnChanges, DoChanges) given a view where all the init hooks were\n * executed once. This is a light version of executeInitAndCheckPreOrderHooks where we can skip read\n * / write of the init-hooks related flags.\n * @param lView The LView where hooks are defined\n * @param hooks Hooks to be run\n * @param nodeIndex 3 cases depending on the value:\n * - undefined: all hooks from the array should be executed (post-order case)\n * - null: execute hooks only from the saved index until the end of the array (pre-order case, when\n * flushing the remaining hooks)\n * - number: execute hooks only from the saved index until that node index exclusive (pre-order\n * case, when executing select(number))\n */\n\n\nfunction executeCheckHooks(lView, hooks, nodeIndex) {\n  callHooks(lView, hooks, 3\n  /* InitPhaseCompleted */\n  , nodeIndex);\n}\n/**\n * Executes post-order init and check hooks (one of AfterContentInit, AfterContentChecked,\n * AfterViewInit, AfterViewChecked) given a view where there are pending init hooks to be executed.\n * @param lView The LView where hooks are defined\n * @param hooks Hooks to be run\n * @param initPhase A phase for which hooks should be run\n * @param nodeIndex 3 cases depending on the value:\n * - undefined: all hooks from the array should be executed (post-order case)\n * - null: execute hooks only from the saved index until the end of the array (pre-order case, when\n * flushing the remaining hooks)\n * - number: execute hooks only from the saved index until that node index exclusive (pre-order\n * case, when executing select(number))\n */\n\n\nfunction executeInitAndCheckHooks(lView, hooks, initPhase, nodeIndex) {\n  ngDevMode && assertNotEqual(initPhase, 3\n  /* InitPhaseCompleted */\n  , 'Init pre-order hooks should not be called more than once');\n\n  if ((lView[FLAGS] & 3\n  /* InitPhaseStateMask */\n  ) === initPhase) {\n    callHooks(lView, hooks, initPhase, nodeIndex);\n  }\n}\n\nfunction incrementInitPhaseFlags(lView, initPhase) {\n  ngDevMode && assertNotEqual(initPhase, 3\n  /* InitPhaseCompleted */\n  , 'Init hooks phase should not be incremented after all init hooks have been run.');\n  var flags = lView[FLAGS];\n\n  if ((flags & 3\n  /* InitPhaseStateMask */\n  ) === initPhase) {\n    flags &= 2047\n    /* IndexWithinInitPhaseReset */\n    ;\n    flags += 1\n    /* InitPhaseStateIncrementer */\n    ;\n    lView[FLAGS] = flags;\n  }\n}\n/**\n * Calls lifecycle hooks with their contexts, skipping init hooks if it's not\n * the first LView pass\n *\n * @param currentView The current view\n * @param arr The array in which the hooks are found\n * @param initPhaseState the current state of the init phase\n * @param currentNodeIndex 3 cases depending on the value:\n * - undefined: all hooks from the array should be executed (post-order case)\n * - null: execute hooks only from the saved index until the end of the array (pre-order case, when\n * flushing the remaining hooks)\n * - number: execute hooks only from the saved index until that node index exclusive (pre-order\n * case, when executing select(number))\n */\n\n\nfunction callHooks(currentView, arr, initPhase, currentNodeIndex) {\n  ngDevMode && assertEqual(isInCheckNoChangesMode(), false, 'Hooks should never be run when in check no changes mode.');\n  var startIndex = currentNodeIndex !== undefined ? currentView[PREORDER_HOOK_FLAGS] & 65535\n  /* IndexOfTheNextPreOrderHookMaskMask */\n  : 0;\n  var nodeIndexLimit = currentNodeIndex != null ? currentNodeIndex : -1;\n  var lastNodeIndexFound = 0;\n\n  for (var i = startIndex; i < arr.length; i++) {\n    var hook = arr[i + 1];\n\n    if (typeof hook === 'number') {\n      lastNodeIndexFound = arr[i];\n\n      if (currentNodeIndex != null && lastNodeIndexFound >= currentNodeIndex) {\n        break;\n      }\n    } else {\n      var isInitHook = arr[i] < 0;\n      if (isInitHook) currentView[PREORDER_HOOK_FLAGS] += 65536\n      /* NumberOfInitHooksCalledIncrementer */\n      ;\n\n      if (lastNodeIndexFound < nodeIndexLimit || nodeIndexLimit == -1) {\n        callHook(currentView, initPhase, arr, i);\n        currentView[PREORDER_HOOK_FLAGS] = (currentView[PREORDER_HOOK_FLAGS] & 4294901760\n        /* NumberOfInitHooksCalledMask */\n        ) + i + 2;\n      }\n\n      i++;\n    }\n  }\n}\n/**\n * Execute one hook against the current `LView`.\n *\n * @param currentView The current view\n * @param initPhaseState the current state of the init phase\n * @param arr The array in which the hooks are found\n * @param i The current index within the hook data array\n */\n\n\nfunction callHook(currentView, initPhase, arr, i) {\n  var isInitHook = arr[i] < 0;\n  var hook = arr[i + 1];\n  var directiveIndex = isInitHook ? -arr[i] : arr[i];\n  var directive = currentView[directiveIndex];\n\n  if (isInitHook) {\n    var indexWithintInitPhase = currentView[FLAGS] >> 11\n    /* IndexWithinInitPhaseShift */\n    ; // The init phase state must be always checked here as it may have been recursively\n    // updated\n\n    if (indexWithintInitPhase < currentView[PREORDER_HOOK_FLAGS] >> 16\n    /* NumberOfInitHooksCalledShift */\n    && (currentView[FLAGS] & 3\n    /* InitPhaseStateMask */\n    ) === initPhase) {\n      currentView[FLAGS] += 2048\n      /* IndexWithinInitPhaseIncrementer */\n      ;\n      hook.call(directive);\n    }\n  } else {\n    hook.call(directive);\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar NO_PARENT_INJECTOR = -1;\n/**\n * Each injector is saved in 9 contiguous slots in `LView` and 9 contiguous slots in\n * `TView.data`. This allows us to store information about the current node's tokens (which\n * can be shared in `TView`) as well as the tokens of its ancestor nodes (which cannot be\n * shared, so they live in `LView`).\n *\n * Each of these slots (aside from the last slot) contains a bloom filter. This bloom filter\n * determines whether a directive is available on the associated node or not. This prevents us\n * from searching the directives array at this level unless it's probable the directive is in it.\n *\n * See: https://en.wikipedia.org/wiki/Bloom_filter for more about bloom filters.\n *\n * Because all injectors have been flattened into `LView` and `TViewData`, they cannot typed\n * using interfaces as they were previously. The start index of each `LInjector` and `TInjector`\n * will differ based on where it is flattened into the main array, so it's not possible to know\n * the indices ahead of time and save their types here. The interfaces are still included here\n * for documentation purposes.\n *\n * export interface LInjector extends Array<any> {\n *\n *    // Cumulative bloom for directive IDs 0-31  (IDs are % BLOOM_SIZE)\n *    [0]: number;\n *\n *    // Cumulative bloom for directive IDs 32-63\n *    [1]: number;\n *\n *    // Cumulative bloom for directive IDs 64-95\n *    [2]: number;\n *\n *    // Cumulative bloom for directive IDs 96-127\n *    [3]: number;\n *\n *    // Cumulative bloom for directive IDs 128-159\n *    [4]: number;\n *\n *    // Cumulative bloom for directive IDs 160 - 191\n *    [5]: number;\n *\n *    // Cumulative bloom for directive IDs 192 - 223\n *    [6]: number;\n *\n *    // Cumulative bloom for directive IDs 224 - 255\n *    [7]: number;\n *\n *    // We need to store a reference to the injector's parent so DI can keep looking up\n *    // the injector tree until it finds the dependency it's looking for.\n *    [PARENT_INJECTOR]: number;\n * }\n *\n * export interface TInjector extends Array<any> {\n *\n *    // Shared node bloom for directive IDs 0-31  (IDs are % BLOOM_SIZE)\n *    [0]: number;\n *\n *    // Shared node bloom for directive IDs 32-63\n *    [1]: number;\n *\n *    // Shared node bloom for directive IDs 64-95\n *    [2]: number;\n *\n *    // Shared node bloom for directive IDs 96-127\n *    [3]: number;\n *\n *    // Shared node bloom for directive IDs 128-159\n *    [4]: number;\n *\n *    // Shared node bloom for directive IDs 160 - 191\n *    [5]: number;\n *\n *    // Shared node bloom for directive IDs 192 - 223\n *    [6]: number;\n *\n *    // Shared node bloom for directive IDs 224 - 255\n *    [7]: number;\n *\n *    // Necessary to find directive indices for a particular node.\n *    [TNODE]: TElementNode|TElementContainerNode|TContainerNode;\n *  }\n */\n\n/**\n * Factory for creating instances of injectors in the NodeInjector.\n *\n * This factory is complicated by the fact that it can resolve `multi` factories as well.\n *\n * NOTE: Some of the fields are optional which means that this class has two hidden classes.\n * - One without `multi` support (most common)\n * - One with `multi` values, (rare).\n *\n * Since VMs can cache up to 4 inline hidden classes this is OK.\n *\n * - Single factory: Only `resolving` and `factory` is defined.\n * - `providers` factory: `componentProviders` is a number and `index = -1`.\n * - `viewProviders` factory: `componentProviders` is a number and `index` points to `providers`.\n */\n\nvar NodeInjectorFactory = /*#__PURE__*/_createClass2(function NodeInjectorFactory(\n/**\n * Factory to invoke in order to create a new instance.\n */\nfactory,\n/**\n * Set to `true` if the token is declared in `viewProviders` (or if it is component).\n */\nisViewProvider, injectImplementation) {\n  _classCallCheck(this, NodeInjectorFactory);\n\n  this.factory = factory;\n  /**\n   * Marker set to true during factory invocation to see if we get into recursive loop.\n   * Recursive loop causes an error to be displayed.\n   */\n\n  this.resolving = false;\n  ngDevMode && assertDefined(factory, 'Factory not specified');\n  ngDevMode && assertEqual(_typeof(factory), 'function', 'Expected factory function.');\n  this.canSeeViewProviders = isViewProvider;\n  this.injectImpl = injectImplementation;\n});\n\nfunction isFactory(obj) {\n  return obj instanceof NodeInjectorFactory;\n} // Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\n\n\nvar unusedValueExportToPlacateAjd$3 = 1;\n/**\n * Converts `TNodeType` into human readable text.\n * Make sure this matches with `TNodeType`\n */\n\nfunction toTNodeTypeAsString(tNodeType) {\n  var text = '';\n  tNodeType & 1\n  /* Text */\n  && (text += '|Text');\n  tNodeType & 2\n  /* Element */\n  && (text += '|Element');\n  tNodeType & 4\n  /* Container */\n  && (text += '|Container');\n  tNodeType & 8\n  /* ElementContainer */\n  && (text += '|ElementContainer');\n  tNodeType & 16\n  /* Projection */\n  && (text += '|Projection');\n  tNodeType & 32\n  /* Icu */\n  && (text += '|IcuContainer');\n  tNodeType & 64\n  /* Placeholder */\n  && (text += '|Placeholder');\n  return text.length > 0 ? text.substring(1) : text;\n} // Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\n\n\nvar unusedValueExportToPlacateAjd$4 = 1;\n/**\n * Returns `true` if the `TNode` has a directive which has `@Input()` for `class` binding.\n *\n * ```\n * <div my-dir [class]=\"exp\"></div>\n * ```\n * and\n * ```\n * @Directive({\n * })\n * class MyDirective {\n *   @Input()\n *   class: string;\n * }\n * ```\n *\n * In the above case it is necessary to write the reconciled styling information into the\n * directive's input.\n *\n * @param tNode\n */\n\nfunction hasClassInput(tNode) {\n  return (tNode.flags & 16\n  /* hasClassInput */\n  ) !== 0;\n}\n/**\n * Returns `true` if the `TNode` has a directive which has `@Input()` for `style` binding.\n *\n * ```\n * <div my-dir [style]=\"exp\"></div>\n * ```\n * and\n * ```\n * @Directive({\n * })\n * class MyDirective {\n *   @Input()\n *   class: string;\n * }\n * ```\n *\n * In the above case it is necessary to write the reconciled styling information into the\n * directive's input.\n *\n * @param tNode\n */\n\n\nfunction hasStyleInput(tNode) {\n  return (tNode.flags & 32\n  /* hasStyleInput */\n  ) !== 0;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction assertTNodeType(tNode, expectedTypes, message) {\n  assertDefined(tNode, 'should be called with a TNode');\n\n  if ((tNode.type & expectedTypes) === 0) {\n    throwError(message || \"Expected [\".concat(toTNodeTypeAsString(expectedTypes), \"] but got \").concat(toTNodeTypeAsString(tNode.type), \".\"));\n  }\n}\n\nfunction assertPureTNodeType(type) {\n  if (!(type === 2\n  /* Element */\n  || //\n  type === 1\n  /* Text */\n  || //\n  type === 4\n  /* Container */\n  || //\n  type === 8\n  /* ElementContainer */\n  || //\n  type === 32\n  /* Icu */\n  || //\n  type === 16\n  /* Projection */\n  || //\n  type === 64\n  /* Placeholder */\n  )) {\n    throwError(\"Expected TNodeType to have only a single type selected, but got \".concat(toTNodeTypeAsString(type), \".\"));\n  }\n}\n/**\n * Assigns all attribute values to the provided element via the inferred renderer.\n *\n * This function accepts two forms of attribute entries:\n *\n * default: (key, value):\n *  attrs = [key1, value1, key2, value2]\n *\n * namespaced: (NAMESPACE_MARKER, uri, name, value)\n *  attrs = [NAMESPACE_MARKER, uri, name, value, NAMESPACE_MARKER, uri, name, value]\n *\n * The `attrs` array can contain a mix of both the default and namespaced entries.\n * The \"default\" values are set without a marker, but if the function comes across\n * a marker value then it will attempt to set a namespaced value. If the marker is\n * not of a namespaced value then the function will quit and return the index value\n * where it stopped during the iteration of the attrs array.\n *\n * See [AttributeMarker] to understand what the namespace marker value is.\n *\n * Note that this instruction does not support assigning style and class values to\n * an element. See `elementStart` and `elementHostAttrs` to learn how styling values\n * are applied to an element.\n * @param renderer The renderer to be used\n * @param native The element that the attributes will be assigned to\n * @param attrs The attribute array of values that will be assigned to the element\n * @returns the index value that was last accessed in the attributes array\n */\n\n\nfunction setUpAttributes(renderer, native, attrs) {\n  var isProc = isProceduralRenderer(renderer);\n  var i = 0;\n\n  while (i < attrs.length) {\n    var value = attrs[i];\n\n    if (typeof value === 'number') {\n      // only namespaces are supported. Other value types (such as style/class\n      // entries) are not supported in this function.\n      if (value !== 0\n      /* NamespaceURI */\n      ) {\n        break;\n      } // we just landed on the marker value ... therefore\n      // we should skip to the next entry\n\n\n      i++;\n      var namespaceURI = attrs[i++];\n      var attrName = attrs[i++];\n      var attrVal = attrs[i++];\n      ngDevMode && ngDevMode.rendererSetAttribute++;\n      isProc ? renderer.setAttribute(native, attrName, attrVal, namespaceURI) : native.setAttributeNS(namespaceURI, attrName, attrVal);\n    } else {\n      // attrName is string;\n      var _attrName = value;\n      var _attrVal = attrs[++i]; // Standard attributes\n\n      ngDevMode && ngDevMode.rendererSetAttribute++;\n\n      if (isAnimationProp(_attrName)) {\n        if (isProc) {\n          renderer.setProperty(native, _attrName, _attrVal);\n        }\n      } else {\n        isProc ? renderer.setAttribute(native, _attrName, _attrVal) : native.setAttribute(_attrName, _attrVal);\n      }\n\n      i++;\n    }\n  } // another piece of code may iterate over the same attributes array. Therefore\n  // it may be helpful to return the exact spot where the attributes array exited\n  // whether by running into an unsupported marker or if all the static values were\n  // iterated over.\n\n\n  return i;\n}\n/**\n * Test whether the given value is a marker that indicates that the following\n * attribute values in a `TAttributes` array are only the names of attributes,\n * and not name-value pairs.\n * @param marker The attribute marker to test.\n * @returns true if the marker is a \"name-only\" marker (e.g. `Bindings`, `Template` or `I18n`).\n */\n\n\nfunction isNameOnlyAttributeMarker(marker) {\n  return marker === 3\n  /* Bindings */\n  || marker === 4\n  /* Template */\n  || marker === 6\n  /* I18n */\n  ;\n}\n\nfunction isAnimationProp(name) {\n  // Perf note: accessing charCodeAt to check for the first character of a string is faster as\n  // compared to accessing a character at index 0 (ex. name[0]). The main reason for this is that\n  // charCodeAt doesn't allocate memory to return a substring.\n  return name.charCodeAt(0) === 64\n  /* AT_SIGN */\n  ;\n}\n/**\n * Merges `src` `TAttributes` into `dst` `TAttributes` removing any duplicates in the process.\n *\n * This merge function keeps the order of attrs same.\n *\n * @param dst Location of where the merged `TAttributes` should end up.\n * @param src `TAttributes` which should be appended to `dst`\n */\n\n\nfunction mergeHostAttrs(dst, src) {\n  if (src === null || src.length === 0) {// do nothing\n  } else if (dst === null || dst.length === 0) {\n    // We have source, but dst is empty, just make a copy.\n    dst = src.slice();\n  } else {\n    var srcMarker = -1\n    /* ImplicitAttributes */\n    ;\n\n    for (var i = 0; i < src.length; i++) {\n      var item = src[i];\n\n      if (typeof item === 'number') {\n        srcMarker = item;\n      } else {\n        if (srcMarker === 0\n        /* NamespaceURI */\n        ) {// Case where we need to consume `key1`, `key2`, `value` items.\n        } else if (srcMarker === -1\n        /* ImplicitAttributes */\n        || srcMarker === 2\n        /* Styles */\n        ) {\n          // Case where we have to consume `key1` and `value` only.\n          mergeHostAttribute(dst, srcMarker, item, null, src[++i]);\n        } else {\n          // Case where we have to consume `key1` only.\n          mergeHostAttribute(dst, srcMarker, item, null, null);\n        }\n      }\n    }\n  }\n\n  return dst;\n}\n/**\n * Append `key`/`value` to existing `TAttributes` taking region marker and duplicates into account.\n *\n * @param dst `TAttributes` to append to.\n * @param marker Region where the `key`/`value` should be added.\n * @param key1 Key to add to `TAttributes`\n * @param key2 Key to add to `TAttributes` (in case of `AttributeMarker.NamespaceURI`)\n * @param value Value to add or to overwrite to `TAttributes` Only used if `marker` is not Class.\n */\n\n\nfunction mergeHostAttribute(dst, marker, key1, key2, value) {\n  var i = 0; // Assume that new markers will be inserted at the end.\n\n  var markerInsertPosition = dst.length; // scan until correct type.\n\n  if (marker === -1\n  /* ImplicitAttributes */\n  ) {\n    markerInsertPosition = -1;\n  } else {\n    while (i < dst.length) {\n      var dstValue = dst[i++];\n\n      if (typeof dstValue === 'number') {\n        if (dstValue === marker) {\n          markerInsertPosition = -1;\n          break;\n        } else if (dstValue > marker) {\n          // We need to save this as we want the markers to be inserted in specific order.\n          markerInsertPosition = i - 1;\n          break;\n        }\n      }\n    }\n  } // search until you find place of insertion\n\n\n  while (i < dst.length) {\n    var item = dst[i];\n\n    if (typeof item === 'number') {\n      // since `i` started as the index after the marker, we did not find it if we are at the next\n      // marker\n      break;\n    } else if (item === key1) {\n      // We already have same token\n      if (key2 === null) {\n        if (value !== null) {\n          dst[i + 1] = value;\n        }\n\n        return;\n      } else if (key2 === dst[i + 1]) {\n        dst[i + 2] = value;\n        return;\n      }\n    } // Increment counter.\n\n\n    i++;\n    if (key2 !== null) i++;\n    if (value !== null) i++;\n  } // insert at location.\n\n\n  if (markerInsertPosition !== -1) {\n    dst.splice(markerInsertPosition, 0, marker);\n    i = markerInsertPosition + 1;\n  }\n\n  dst.splice(i++, 0, key1);\n\n  if (key2 !== null) {\n    dst.splice(i++, 0, key2);\n  }\n\n  if (value !== null) {\n    dst.splice(i++, 0, value);\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/// Parent Injector Utils ///////////////////////////////////////////////////////////////\n\n\nfunction hasParentInjector(parentLocation) {\n  return parentLocation !== NO_PARENT_INJECTOR;\n}\n\nfunction getParentInjectorIndex(parentLocation) {\n  ngDevMode && assertNumber(parentLocation, 'Number expected');\n  ngDevMode && assertNotEqual(parentLocation, -1, 'Not a valid state.');\n  var parentInjectorIndex = parentLocation & 32767\n  /* InjectorIndexMask */\n  ;\n  ngDevMode && assertGreaterThan(parentInjectorIndex, HEADER_OFFSET, 'Parent injector must be pointing past HEADER_OFFSET.');\n  return parentLocation & 32767\n  /* InjectorIndexMask */\n  ;\n}\n\nfunction getParentInjectorViewOffset(parentLocation) {\n  return parentLocation >> 16\n  /* ViewOffsetShift */\n  ;\n}\n/**\n * Unwraps a parent injector location number to find the view offset from the current injector,\n * then walks up the declaration view tree until the view is found that contains the parent\n * injector.\n *\n * @param location The location of the parent injector, which contains the view offset\n * @param startView The LView instance from which to start walking up the view tree\n * @returns The LView instance that contains the parent injector\n */\n\n\nfunction getParentInjectorView(location, startView) {\n  var viewOffset = getParentInjectorViewOffset(location);\n  var parentView = startView; // For most cases, the parent injector can be found on the host node (e.g. for component\n  // or container), but we must keep the loop here to support the rarer case of deeply nested\n  // <ng-template> tags or inline views, where the parent injector might live many views\n  // above the child injector.\n\n  while (viewOffset > 0) {\n    parentView = parentView[DECLARATION_VIEW];\n    viewOffset--;\n  }\n\n  return parentView;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Defines if the call to `inject` should include `viewProviders` in its resolution.\n *\n * This is set to true when we try to instantiate a component. This value is reset in\n * `getNodeInjectable` to a value which matches the declaration location of the token about to be\n * instantiated. This is done so that if we are injecting a token which was declared outside of\n * `viewProviders` we don't accidentally pull `viewProviders` in.\n *\n * Example:\n *\n * ```\n * @Injectable()\n * class MyService {\n *   constructor(public value: String) {}\n * }\n *\n * @Component({\n *   providers: [\n *     MyService,\n *     {provide: String, value: 'providers' }\n *   ]\n *   viewProviders: [\n *     {provide: String, value: 'viewProviders'}\n *   ]\n * })\n * class MyComponent {\n *   constructor(myService: MyService, value: String) {\n *     // We expect that Component can see into `viewProviders`.\n *     expect(value).toEqual('viewProviders');\n *     // `MyService` was not declared in `viewProviders` hence it can't see it.\n *     expect(myService.value).toEqual('providers');\n *   }\n * }\n *\n * ```\n */\n\n\nvar includeViewProviders = true;\n\nfunction setIncludeViewProviders(v) {\n  var oldValue = includeViewProviders;\n  includeViewProviders = v;\n  return oldValue;\n}\n/**\n * The number of slots in each bloom filter (used by DI). The larger this number, the fewer\n * directives that will share slots, and thus, the fewer false positives when checking for\n * the existence of a directive.\n */\n\n\nvar BLOOM_SIZE = 256;\nvar BLOOM_MASK = BLOOM_SIZE - 1;\n/** Counter used to generate unique IDs for directives. */\n\nvar nextNgElementId = 0;\n/**\n * Registers this directive as present in its node's injector by flipping the directive's\n * corresponding bit in the injector's bloom filter.\n *\n * @param injectorIndex The index of the node injector where this token should be registered\n * @param tView The TView for the injector's bloom filters\n * @param type The directive token to register\n */\n\nfunction bloomAdd(injectorIndex, tView, type) {\n  ngDevMode && assertEqual(tView.firstCreatePass, true, 'expected firstCreatePass to be true');\n  var id;\n\n  if (typeof type === 'string') {\n    id = type.charCodeAt(0) || 0;\n  } else if (type.hasOwnProperty(NG_ELEMENT_ID)) {\n    id = type[NG_ELEMENT_ID];\n  } // Set a unique ID on the directive type, so if something tries to inject the directive,\n  // we can easily retrieve the ID and hash it into the bloom bit that should be checked.\n\n\n  if (id == null) {\n    id = type[NG_ELEMENT_ID] = nextNgElementId++;\n  } // We only have BLOOM_SIZE (256) slots in our bloom filter (8 buckets * 32 bits each),\n  // so all unique IDs must be modulo-ed into a number from 0 - 255 to fit into the filter.\n\n\n  var bloomBit = id & BLOOM_MASK; // Create a mask that targets the specific bit associated with the directive.\n  // JS bit operations are 32 bits, so this will be a number between 2^0 and 2^31, corresponding\n  // to bit positions 0 - 31 in a 32 bit integer.\n\n  var mask = 1 << bloomBit; // Use the raw bloomBit number to determine which bloom filter bucket we should check\n  // e.g: bf0 = [0 - 31], bf1 = [32 - 63], bf2 = [64 - 95], bf3 = [96 - 127], etc\n\n  var b7 = bloomBit & 0x80;\n  var b6 = bloomBit & 0x40;\n  var b5 = bloomBit & 0x20;\n  var tData = tView.data;\n\n  if (b7) {\n    b6 ? b5 ? tData[injectorIndex + 7] |= mask : tData[injectorIndex + 6] |= mask : b5 ? tData[injectorIndex + 5] |= mask : tData[injectorIndex + 4] |= mask;\n  } else {\n    b6 ? b5 ? tData[injectorIndex + 3] |= mask : tData[injectorIndex + 2] |= mask : b5 ? tData[injectorIndex + 1] |= mask : tData[injectorIndex] |= mask;\n  }\n}\n/**\n * Creates (or gets an existing) injector for a given element or container.\n *\n * @param tNode for which an injector should be retrieved / created.\n * @param lView View where the node is stored\n * @returns Node injector\n */\n\n\nfunction getOrCreateNodeInjectorForNode(tNode, lView) {\n  var existingInjectorIndex = getInjectorIndex(tNode, lView);\n\n  if (existingInjectorIndex !== -1) {\n    return existingInjectorIndex;\n  }\n\n  var tView = lView[TVIEW];\n\n  if (tView.firstCreatePass) {\n    tNode.injectorIndex = lView.length;\n    insertBloom(tView.data, tNode); // foundation for node bloom\n\n    insertBloom(lView, null); // foundation for cumulative bloom\n\n    insertBloom(tView.blueprint, null);\n  }\n\n  var parentLoc = getParentInjectorLocation(tNode, lView);\n  var injectorIndex = tNode.injectorIndex; // If a parent injector can't be found, its location is set to -1.\n  // In that case, we don't need to set up a cumulative bloom\n\n  if (hasParentInjector(parentLoc)) {\n    var parentIndex = getParentInjectorIndex(parentLoc);\n    var parentLView = getParentInjectorView(parentLoc, lView);\n    var parentData = parentLView[TVIEW].data; // Creates a cumulative bloom filter that merges the parent's bloom filter\n    // and its own cumulative bloom (which contains tokens for all ancestors)\n\n    for (var i = 0; i < 8\n    /* BLOOM_SIZE */\n    ; i++) {\n      lView[injectorIndex + i] = parentLView[parentIndex + i] | parentData[parentIndex + i];\n    }\n  }\n\n  lView[injectorIndex + 8\n  /* PARENT */\n  ] = parentLoc;\n  return injectorIndex;\n}\n\nfunction insertBloom(arr, footer) {\n  arr.push(0, 0, 0, 0, 0, 0, 0, 0, footer);\n}\n\nfunction getInjectorIndex(tNode, lView) {\n  if (tNode.injectorIndex === -1 || // If the injector index is the same as its parent's injector index, then the index has been\n  // copied down from the parent node. No injector has been created yet on this node.\n  tNode.parent && tNode.parent.injectorIndex === tNode.injectorIndex || // After the first template pass, the injector index might exist but the parent values\n  // might not have been calculated yet for this instance\n  lView[tNode.injectorIndex + 8\n  /* PARENT */\n  ] === null) {\n    return -1;\n  } else {\n    ngDevMode && assertIndexInRange(lView, tNode.injectorIndex);\n    return tNode.injectorIndex;\n  }\n}\n/**\n * Finds the index of the parent injector, with a view offset if applicable. Used to set the\n * parent injector initially.\n *\n * @returns Returns a number that is the combination of the number of LViews that we have to go up\n * to find the LView containing the parent inject AND the index of the injector within that LView.\n */\n\n\nfunction getParentInjectorLocation(tNode, lView) {\n  if (tNode.parent && tNode.parent.injectorIndex !== -1) {\n    // If we have a parent `TNode` and there is an injector associated with it we are done, because\n    // the parent injector is within the current `LView`.\n    return tNode.parent.injectorIndex; // ViewOffset is 0\n  } // When parent injector location is computed it may be outside of the current view. (ie it could\n  // be pointing to a declared parent location). This variable stores number of declaration parents\n  // we need to walk up in order to find the parent injector location.\n\n\n  var declarationViewOffset = 0;\n  var parentTNode = null;\n  var lViewCursor = lView; // The parent injector is not in the current `LView`. We will have to walk the declared parent\n  // `LView` hierarchy and look for it. If we walk of the top, that means that there is no parent\n  // `NodeInjector`.\n\n  while (lViewCursor !== null) {\n    // First determine the `parentTNode` location. The parent pointer differs based on `TView.type`.\n    var tView = lViewCursor[TVIEW];\n    var tViewType = tView.type;\n\n    if (tViewType === 2\n    /* Embedded */\n    ) {\n      ngDevMode && assertDefined(tView.declTNode, 'Embedded TNodes should have declaration parents.');\n      parentTNode = tView.declTNode;\n    } else if (tViewType === 1\n    /* Component */\n    ) {\n      // Components don't have `TView.declTNode` because each instance of component could be\n      // inserted in different location, hence `TView.declTNode` is meaningless.\n      parentTNode = lViewCursor[T_HOST];\n    } else {\n      ngDevMode && assertEqual(tView.type, 0\n      /* Root */\n      , 'Root type expected');\n      parentTNode = null;\n    }\n\n    if (parentTNode === null) {\n      // If we have no parent, than we are done.\n      return NO_PARENT_INJECTOR;\n    }\n\n    ngDevMode && parentTNode && assertTNodeForLView(parentTNode, lViewCursor[DECLARATION_VIEW]); // Every iteration of the loop requires that we go to the declared parent.\n\n    declarationViewOffset++;\n    lViewCursor = lViewCursor[DECLARATION_VIEW];\n\n    if (parentTNode.injectorIndex !== -1) {\n      // We found a NodeInjector which points to something.\n      return parentTNode.injectorIndex | declarationViewOffset << 16\n      /* ViewOffsetShift */\n      ;\n    }\n  }\n\n  return NO_PARENT_INJECTOR;\n}\n/**\n * Makes a type or an injection token public to the DI system by adding it to an\n * injector's bloom filter.\n *\n * @param di The node injector in which a directive will be added\n * @param token The type or the injection token to be made public\n */\n\n\nfunction diPublicInInjector(injectorIndex, tView, token) {\n  bloomAdd(injectorIndex, tView, token);\n}\n/**\n * Inject static attribute value into directive constructor.\n *\n * This method is used with `factory` functions which are generated as part of\n * `defineDirective` or `defineComponent`. The method retrieves the static value\n * of an attribute. (Dynamic attributes are not supported since they are not resolved\n *  at the time of injection and can change over time.)\n *\n * # Example\n * Given:\n * ```\n * @Component(...)\n * class MyComponent {\n *   constructor(@Attribute('title') title: string) { ... }\n * }\n * ```\n * When instantiated with\n * ```\n * <my-component title=\"Hello\"></my-component>\n * ```\n *\n * Then factory method generated is:\n * ```\n * MyComponent.ɵcmp = defineComponent({\n *   factory: () => new MyComponent(injectAttribute('title'))\n *   ...\n * })\n * ```\n *\n * @publicApi\n */\n\n\nfunction injectAttributeImpl(tNode, attrNameToInject) {\n  ngDevMode && assertTNodeType(tNode, 12\n  /* AnyContainer */\n  | 3\n  /* AnyRNode */\n  );\n  ngDevMode && assertDefined(tNode, 'expecting tNode');\n\n  if (attrNameToInject === 'class') {\n    return tNode.classes;\n  }\n\n  if (attrNameToInject === 'style') {\n    return tNode.styles;\n  }\n\n  var attrs = tNode.attrs;\n\n  if (attrs) {\n    var attrsLength = attrs.length;\n    var i = 0;\n\n    while (i < attrsLength) {\n      var value = attrs[i]; // If we hit a `Bindings` or `Template` marker then we are done.\n\n      if (isNameOnlyAttributeMarker(value)) break; // Skip namespaced attributes\n\n      if (value === 0\n      /* NamespaceURI */\n      ) {\n        // we skip the next two values\n        // as namespaced attributes looks like\n        // [..., AttributeMarker.NamespaceURI, 'http://someuri.com/test', 'test:exist',\n        // 'existValue', ...]\n        i = i + 2;\n      } else if (typeof value === 'number') {\n        // Skip to the first value of the marked attribute.\n        i++;\n\n        while (i < attrsLength && typeof attrs[i] === 'string') {\n          i++;\n        }\n      } else if (value === attrNameToInject) {\n        return attrs[i + 1];\n      } else {\n        i = i + 2;\n      }\n    }\n  }\n\n  return null;\n}\n\nfunction notFoundValueOrThrow(notFoundValue, token, flags) {\n  if (flags & InjectFlags.Optional) {\n    return notFoundValue;\n  } else {\n    throwProviderNotFoundError(token, 'NodeInjector');\n  }\n}\n/**\n * Returns the value associated to the given token from the ModuleInjector or throws exception\n *\n * @param lView The `LView` that contains the `tNode`\n * @param token The token to look for\n * @param flags Injection flags\n * @param notFoundValue The value to return when the injection flags is `InjectFlags.Optional`\n * @returns the value from the injector or throws an exception\n */\n\n\nfunction lookupTokenUsingModuleInjector(lView, token, flags, notFoundValue) {\n  if (flags & InjectFlags.Optional && notFoundValue === undefined) {\n    // This must be set or the NullInjector will throw for optional deps\n    notFoundValue = null;\n  }\n\n  if ((flags & (InjectFlags.Self | InjectFlags.Host)) === 0) {\n    var moduleInjector = lView[INJECTOR]; // switch to `injectInjectorOnly` implementation for module injector, since module injector\n    // should not have access to Component/Directive DI scope (that may happen through\n    // `directiveInject` implementation)\n\n    var previousInjectImplementation = setInjectImplementation(undefined);\n\n    try {\n      if (moduleInjector) {\n        return moduleInjector.get(token, notFoundValue, flags & InjectFlags.Optional);\n      } else {\n        return injectRootLimpMode(token, notFoundValue, flags & InjectFlags.Optional);\n      }\n    } finally {\n      setInjectImplementation(previousInjectImplementation);\n    }\n  }\n\n  return notFoundValueOrThrow(notFoundValue, token, flags);\n}\n/**\n * Returns the value associated to the given token from the NodeInjectors => ModuleInjector.\n *\n * Look for the injector providing the token by walking up the node injector tree and then\n * the module injector tree.\n *\n * This function patches `token` with `__NG_ELEMENT_ID__` which contains the id for the bloom\n * filter. `-1` is reserved for injecting `Injector` (implemented by `NodeInjector`)\n *\n * @param tNode The Node where the search for the injector should start\n * @param lView The `LView` that contains the `tNode`\n * @param token The token to look for\n * @param flags Injection flags\n * @param notFoundValue The value to return when the injection flags is `InjectFlags.Optional`\n * @returns the value from the injector, `null` when not found, or `notFoundValue` if provided\n */\n\n\nfunction getOrCreateInjectable(tNode, lView, token) {\n  var flags = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : InjectFlags.Default;\n  var notFoundValue = arguments.length > 4 ? arguments[4] : undefined;\n\n  if (tNode !== null) {\n    var bloomHash = bloomHashBitOrFactory(token); // If the ID stored here is a function, this is a special object like ElementRef or TemplateRef\n    // so just call the factory function to create it.\n\n    if (typeof bloomHash === 'function') {\n      if (!enterDI(lView, tNode, flags)) {\n        // Failed to enter DI, try module injector instead. If a token is injected with the @Host\n        // flag, the module injector is not searched for that token in Ivy.\n        return flags & InjectFlags.Host ? notFoundValueOrThrow(notFoundValue, token, flags) : lookupTokenUsingModuleInjector(lView, token, flags, notFoundValue);\n      }\n\n      try {\n        var value = bloomHash();\n\n        if (value == null && !(flags & InjectFlags.Optional)) {\n          throwProviderNotFoundError(token);\n        } else {\n          return value;\n        }\n      } finally {\n        leaveDI();\n      }\n    } else if (typeof bloomHash === 'number') {\n      // A reference to the previous injector TView that was found while climbing the element\n      // injector tree. This is used to know if viewProviders can be accessed on the current\n      // injector.\n      var previousTView = null;\n      var injectorIndex = getInjectorIndex(tNode, lView);\n      var parentLocation = NO_PARENT_INJECTOR;\n      var hostTElementNode = flags & InjectFlags.Host ? lView[DECLARATION_COMPONENT_VIEW][T_HOST] : null; // If we should skip this injector, or if there is no injector on this node, start by\n      // searching the parent injector.\n\n      if (injectorIndex === -1 || flags & InjectFlags.SkipSelf) {\n        parentLocation = injectorIndex === -1 ? getParentInjectorLocation(tNode, lView) : lView[injectorIndex + 8\n        /* PARENT */\n        ];\n\n        if (parentLocation === NO_PARENT_INJECTOR || !shouldSearchParent(flags, false)) {\n          injectorIndex = -1;\n        } else {\n          previousTView = lView[TVIEW];\n          injectorIndex = getParentInjectorIndex(parentLocation);\n          lView = getParentInjectorView(parentLocation, lView);\n        }\n      } // Traverse up the injector tree until we find a potential match or until we know there\n      // *isn't* a match.\n\n\n      while (injectorIndex !== -1) {\n        ngDevMode && assertNodeInjector(lView, injectorIndex); // Check the current injector. If it matches, see if it contains token.\n\n        var tView = lView[TVIEW];\n        ngDevMode && assertTNodeForLView(tView.data[injectorIndex + 8\n        /* TNODE */\n        ], lView);\n\n        if (bloomHasToken(bloomHash, injectorIndex, tView.data)) {\n          // At this point, we have an injector which *may* contain the token, so we step through\n          // the providers and directives associated with the injector's corresponding node to get\n          // the instance.\n          var instance = searchTokensOnInjector(injectorIndex, lView, token, previousTView, flags, hostTElementNode);\n\n          if (instance !== NOT_FOUND) {\n            return instance;\n          }\n        }\n\n        parentLocation = lView[injectorIndex + 8\n        /* PARENT */\n        ];\n\n        if (parentLocation !== NO_PARENT_INJECTOR && shouldSearchParent(flags, lView[TVIEW].data[injectorIndex + 8\n        /* TNODE */\n        ] === hostTElementNode) && bloomHasToken(bloomHash, injectorIndex, lView)) {\n          // The def wasn't found anywhere on this node, so it was a false positive.\n          // Traverse up the tree and continue searching.\n          previousTView = tView;\n          injectorIndex = getParentInjectorIndex(parentLocation);\n          lView = getParentInjectorView(parentLocation, lView);\n        } else {\n          // If we should not search parent OR If the ancestor bloom filter value does not have the\n          // bit corresponding to the directive we can give up on traversing up to find the specific\n          // injector.\n          injectorIndex = -1;\n        }\n      }\n    }\n  }\n\n  return lookupTokenUsingModuleInjector(lView, token, flags, notFoundValue);\n}\n\nvar NOT_FOUND = {};\n\nfunction createNodeInjector() {\n  return new NodeInjector(getCurrentTNode(), getLView());\n}\n\nfunction searchTokensOnInjector(injectorIndex, lView, token, previousTView, flags, hostTElementNode) {\n  var currentTView = lView[TVIEW];\n  var tNode = currentTView.data[injectorIndex + 8\n  /* TNODE */\n  ]; // First, we need to determine if view providers can be accessed by the starting element.\n  // There are two possibilities\n\n  var canAccessViewProviders = previousTView == null ? // 1) This is the first invocation `previousTView == null` which means that we are at the\n  // `TNode` of where injector is starting to look. In such a case the only time we are allowed\n  // to look into the ViewProviders is if:\n  // - we are on a component\n  // - AND the injector set `includeViewProviders` to true (implying that the token can see\n  // ViewProviders because it is the Component or a Service which itself was declared in\n  // ViewProviders)\n  isComponentHost(tNode) && includeViewProviders : // 2) `previousTView != null` which means that we are now walking across the parent nodes.\n  // In such a case we are only allowed to look into the ViewProviders if:\n  // - We just crossed from child View to Parent View `previousTView != currentTView`\n  // - AND the parent TNode is an Element.\n  // This means that we just came from the Component's View and therefore are allowed to see\n  // into the ViewProviders.\n  previousTView != currentTView && (tNode.type & 3\n  /* AnyRNode */\n  ) !== 0; // This special case happens when there is a @host on the inject and when we are searching\n  // on the host element node.\n\n  var isHostSpecialCase = flags & InjectFlags.Host && hostTElementNode === tNode;\n  var injectableIdx = locateDirectiveOrProvider(tNode, currentTView, token, canAccessViewProviders, isHostSpecialCase);\n\n  if (injectableIdx !== null) {\n    return getNodeInjectable(lView, currentTView, injectableIdx, tNode);\n  } else {\n    return NOT_FOUND;\n  }\n}\n/**\n * Searches for the given token among the node's directives and providers.\n *\n * @param tNode TNode on which directives are present.\n * @param tView The tView we are currently processing\n * @param token Provider token or type of a directive to look for.\n * @param canAccessViewProviders Whether view providers should be considered.\n * @param isHostSpecialCase Whether the host special case applies.\n * @returns Index of a found directive or provider, or null when none found.\n */\n\n\nfunction locateDirectiveOrProvider(tNode, tView, token, canAccessViewProviders, isHostSpecialCase) {\n  var nodeProviderIndexes = tNode.providerIndexes;\n  var tInjectables = tView.data;\n  var injectablesStart = nodeProviderIndexes & 1048575\n  /* ProvidersStartIndexMask */\n  ;\n  var directivesStart = tNode.directiveStart;\n  var directiveEnd = tNode.directiveEnd;\n  var cptViewProvidersCount = nodeProviderIndexes >> 20\n  /* CptViewProvidersCountShift */\n  ;\n  var startingIndex = canAccessViewProviders ? injectablesStart : injectablesStart + cptViewProvidersCount; // When the host special case applies, only the viewProviders and the component are visible\n\n  var endIndex = isHostSpecialCase ? injectablesStart + cptViewProvidersCount : directiveEnd;\n\n  for (var i = startingIndex; i < endIndex; i++) {\n    var providerTokenOrDef = tInjectables[i];\n\n    if (i < directivesStart && token === providerTokenOrDef || i >= directivesStart && providerTokenOrDef.type === token) {\n      return i;\n    }\n  }\n\n  if (isHostSpecialCase) {\n    var dirDef = tInjectables[directivesStart];\n\n    if (dirDef && isComponentDef(dirDef) && dirDef.type === token) {\n      return directivesStart;\n    }\n  }\n\n  return null;\n}\n/**\n * Retrieve or instantiate the injectable from the `LView` at particular `index`.\n *\n * This function checks to see if the value has already been instantiated and if so returns the\n * cached `injectable`. Otherwise if it detects that the value is still a factory it\n * instantiates the `injectable` and caches the value.\n */\n\n\nfunction getNodeInjectable(lView, tView, index, tNode) {\n  var value = lView[index];\n  var tData = tView.data;\n\n  if (isFactory(value)) {\n    var factory = value;\n\n    if (factory.resolving) {\n      throwCyclicDependencyError(stringifyForError(tData[index]));\n    }\n\n    var previousIncludeViewProviders = setIncludeViewProviders(factory.canSeeViewProviders);\n    factory.resolving = true;\n    var previousInjectImplementation = factory.injectImpl ? setInjectImplementation(factory.injectImpl) : null;\n    var success = enterDI(lView, tNode, InjectFlags.Default);\n    ngDevMode && assertEqual(success, true, 'Because flags do not contain \\`SkipSelf\\' we expect this to always succeed.');\n\n    try {\n      value = lView[index] = factory.factory(undefined, tData, lView, tNode); // This code path is hit for both directives and providers.\n      // For perf reasons, we want to avoid searching for hooks on providers.\n      // It does no harm to try (the hooks just won't exist), but the extra\n      // checks are unnecessary and this is a hot path. So we check to see\n      // if the index of the dependency is in the directive range for this\n      // tNode. If it's not, we know it's a provider and skip hook registration.\n\n      if (tView.firstCreatePass && index >= tNode.directiveStart) {\n        ngDevMode && assertDirectiveDef(tData[index]);\n        registerPreOrderHooks(index, tData[index], tView);\n      }\n    } finally {\n      previousInjectImplementation !== null && setInjectImplementation(previousInjectImplementation);\n      setIncludeViewProviders(previousIncludeViewProviders);\n      factory.resolving = false;\n      leaveDI();\n    }\n  }\n\n  return value;\n}\n/**\n * Returns the bit in an injector's bloom filter that should be used to determine whether or not\n * the directive might be provided by the injector.\n *\n * When a directive is public, it is added to the bloom filter and given a unique ID that can be\n * retrieved on the Type. When the directive isn't public or the token is not a directive `null`\n * is returned as the node injector can not possibly provide that token.\n *\n * @param token the injection token\n * @returns the matching bit to check in the bloom filter or `null` if the token is not known.\n *   When the returned value is negative then it represents special values such as `Injector`.\n */\n\n\nfunction bloomHashBitOrFactory(token) {\n  ngDevMode && assertDefined(token, 'token must be defined');\n\n  if (typeof token === 'string') {\n    return token.charCodeAt(0) || 0;\n  }\n\n  var tokenId = // First check with `hasOwnProperty` so we don't get an inherited ID.\n  token.hasOwnProperty(NG_ELEMENT_ID) ? token[NG_ELEMENT_ID] : undefined; // Negative token IDs are used for special objects such as `Injector`\n\n  if (typeof tokenId === 'number') {\n    if (tokenId >= 0) {\n      return tokenId & BLOOM_MASK;\n    } else {\n      ngDevMode && assertEqual(tokenId, -1\n      /* Injector */\n      , 'Expecting to get Special Injector Id');\n      return createNodeInjector;\n    }\n  } else {\n    return tokenId;\n  }\n}\n\nfunction bloomHasToken(bloomHash, injectorIndex, injectorView) {\n  // Create a mask that targets the specific bit associated with the directive we're looking for.\n  // JS bit operations are 32 bits, so this will be a number between 2^0 and 2^31, corresponding\n  // to bit positions 0 - 31 in a 32 bit integer.\n  var mask = 1 << bloomHash;\n  var b7 = bloomHash & 0x80;\n  var b6 = bloomHash & 0x40;\n  var b5 = bloomHash & 0x20; // Our bloom filter size is 256 bits, which is eight 32-bit bloom filter buckets:\n  // bf0 = [0 - 31], bf1 = [32 - 63], bf2 = [64 - 95], bf3 = [96 - 127], etc.\n  // Get the bloom filter value from the appropriate bucket based on the directive's bloomBit.\n\n  var value;\n\n  if (b7) {\n    value = b6 ? b5 ? injectorView[injectorIndex + 7] : injectorView[injectorIndex + 6] : b5 ? injectorView[injectorIndex + 5] : injectorView[injectorIndex + 4];\n  } else {\n    value = b6 ? b5 ? injectorView[injectorIndex + 3] : injectorView[injectorIndex + 2] : b5 ? injectorView[injectorIndex + 1] : injectorView[injectorIndex];\n  } // If the bloom filter value has the bit corresponding to the directive's bloomBit flipped on,\n  // this injector is a potential match.\n\n\n  return !!(value & mask);\n}\n/** Returns true if flags prevent parent injector from being searched for tokens */\n\n\nfunction shouldSearchParent(flags, isFirstHostTNode) {\n  return !(flags & InjectFlags.Self) && !(flags & InjectFlags.Host && isFirstHostTNode);\n}\n\nvar NodeInjector = /*#__PURE__*/function () {\n  function NodeInjector(_tNode, _lView) {\n    _classCallCheck(this, NodeInjector);\n\n    this._tNode = _tNode;\n    this._lView = _lView;\n  }\n\n  _createClass2(NodeInjector, [{\n    key: \"get\",\n    value: function get(token, notFoundValue) {\n      return getOrCreateInjectable(this._tNode, this._lView, token, undefined, notFoundValue);\n    }\n  }]);\n\n  return NodeInjector;\n}();\n/**\n * @codeGenApi\n */\n\n\nfunction ɵɵgetFactoryOf(type) {\n  var typeAny = type;\n\n  if (isForwardRef(type)) {\n    return function () {\n      var factory = ɵɵgetFactoryOf(resolveForwardRef(typeAny));\n      return factory ? factory() : null;\n    };\n  }\n\n  var factory = getFactoryDef(typeAny);\n\n  if (factory === null) {\n    var injectorDef = getInjectorDef(typeAny);\n    factory = injectorDef && injectorDef.factory;\n  }\n\n  return factory || null;\n}\n/**\n * @codeGenApi\n */\n\n\nfunction ɵɵgetInheritedFactory(type) {\n  return noSideEffects(function () {\n    var ownConstructor = type.prototype.constructor;\n    var ownFactory = ownConstructor[NG_FACTORY_DEF] || ɵɵgetFactoryOf(ownConstructor);\n    var objectPrototype = Object.prototype;\n    var parent = Object.getPrototypeOf(type.prototype).constructor; // Go up the prototype until we hit `Object`.\n\n    while (parent && parent !== objectPrototype) {\n      var factory = parent[NG_FACTORY_DEF] || ɵɵgetFactoryOf(parent); // If we hit something that has a factory and the factory isn't the same as the type,\n      // we've found the inherited factory. Note the check that the factory isn't the type's\n      // own factory is redundant in most cases, but if the user has custom decorators on the\n      // class, this lookup will start one level down in the prototype chain, causing us to\n      // find the own factory first and potentially triggering an infinite loop downstream.\n\n      if (factory && factory !== ownFactory) {\n        return factory;\n      }\n\n      parent = Object.getPrototypeOf(parent);\n    } // There is no factory defined. Either this was improper usage of inheritance\n    // (no Angular decorator on the superclass) or there is no constructor at all\n    // in the inheritance chain. Since the two cases cannot be distinguished, the\n    // latter has to be assumed.\n\n\n    return function (t) {\n      return new t();\n    };\n  });\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ERROR_TYPE = 'ngType';\nvar ERROR_DEBUG_CONTEXT = 'ngDebugContext';\nvar ERROR_ORIGINAL_ERROR = 'ngOriginalError';\nvar ERROR_LOGGER = 'ngErrorLogger';\n\nfunction wrappedError(message, originalError) {\n  var msg = \"\".concat(message, \" caused by: \").concat(originalError instanceof Error ? originalError.message : originalError);\n  var error = Error(msg);\n  error[ERROR_ORIGINAL_ERROR] = originalError;\n  return error;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction getType(error) {\n  return error[ERROR_TYPE];\n}\n\nfunction getDebugContext(error) {\n  return error[ERROR_DEBUG_CONTEXT];\n}\n\nfunction getOriginalError(error) {\n  return error[ERROR_ORIGINAL_ERROR];\n}\n\nfunction getErrorLogger(error) {\n  return error[ERROR_LOGGER] || defaultErrorLogger;\n}\n\nfunction defaultErrorLogger(console) {\n  for (var _len8 = arguments.length, values = new Array(_len8 > 1 ? _len8 - 1 : 0), _key8 = 1; _key8 < _len8; _key8++) {\n    values[_key8 - 1] = arguments[_key8];\n  }\n\n  console.error.apply(console, values);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Provides a hook for centralized exception handling.\n *\n * The default implementation of `ErrorHandler` prints error messages to the `console`. To\n * intercept error handling, write a custom exception handler that replaces this default as\n * appropriate for your app.\n *\n * @usageNotes\n * ### Example\n *\n * ```\n * class MyErrorHandler implements ErrorHandler {\n *   handleError(error) {\n *     // do something with the exception\n *   }\n * }\n *\n * @NgModule({\n *   providers: [{provide: ErrorHandler, useClass: MyErrorHandler}]\n * })\n * class MyModule {}\n * ```\n *\n * @publicApi\n */\n\n\nvar ErrorHandler = /*#__PURE__*/function () {\n  function ErrorHandler() {\n    _classCallCheck(this, ErrorHandler);\n\n    /**\n     * @internal\n     */\n    this._console = console;\n  }\n\n  _createClass2(ErrorHandler, [{\n    key: \"handleError\",\n    value: function handleError(error) {\n      var originalError = this._findOriginalError(error);\n\n      var context = this._findContext(error); // Note: Browser consoles show the place from where console.error was called.\n      // We can use this to give users additional information about the error.\n\n\n      var errorLogger = getErrorLogger(error);\n      errorLogger(this._console, \"ERROR\", error);\n\n      if (originalError) {\n        errorLogger(this._console, \"ORIGINAL ERROR\", originalError);\n      }\n\n      if (context) {\n        errorLogger(this._console, 'ERROR CONTEXT', context);\n      }\n    }\n    /** @internal */\n\n  }, {\n    key: \"_findContext\",\n    value: function _findContext(error) {\n      if (error) {\n        return getDebugContext(error) ? getDebugContext(error) : this._findContext(getOriginalError(error));\n      }\n\n      return null;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_findOriginalError\",\n    value: function _findOriginalError(error) {\n      var e = getOriginalError(error);\n\n      while (e && getOriginalError(e)) {\n        e = getOriginalError(e);\n      }\n\n      return e;\n    }\n  }]);\n\n  return ErrorHandler;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Defines a schema that allows an NgModule to contain the following:\n * - Non-Angular elements named with dash case (`-`).\n * - Element properties named with dash case (`-`).\n * Dash case is the naming convention for custom elements.\n *\n * @publicApi\n */\n\n\nvar CUSTOM_ELEMENTS_SCHEMA = {\n  name: 'custom-elements'\n};\n/**\n * Defines a schema that allows any property on any element.\n *\n * @publicApi\n */\n\nvar NO_ERRORS_SCHEMA = {\n  name: 'no-errors-schema'\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * THIS FILE CONTAINS CODE WHICH SHOULD BE TREE SHAKEN AND NEVER CALLED FROM PRODUCTION CODE!!!\n */\n\n/**\n * Creates an `Array` construction with a given name. This is useful when\n * looking for memory consumption to see what time of array it is.\n *\n *\n * @param name Name to give to the constructor\n * @returns A subclass of `Array` if possible. This can only be done in\n *          environments which support `class` construct.\n */\n\nfunction createNamedArrayType(name) {\n  // This should never be called in prod mode, so let's verify that is the case.\n  if (ngDevMode) {\n    try {\n      // If this function were compromised the following could lead to arbitrary\n      // script execution. We bless it with Trusted Types anyway since this\n      // function is stripped out of production binaries.\n      return newTrustedFunctionForDev('Array', \"return class \".concat(name, \" extends Array{}\"))(Array);\n    } catch (e) {\n      // If it does not work just give up and fall back to regular Array.\n      return Array;\n    }\n  } else {\n    throw new Error('Looks like we are in \\'prod mode\\', but we are creating a named Array type, which is wrong! Check your code');\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction normalizeDebugBindingName(name) {\n  // Attribute names with `$` (eg `x-y$`) are valid per spec, but unsupported by some browsers\n  name = camelCaseToDashCase(name.replace(/[$@]/g, '_'));\n  return \"ng-reflect-\".concat(name);\n}\n\nvar CAMEL_CASE_REGEXP = /([A-Z])/g;\n\nfunction camelCaseToDashCase(input) {\n  return input.replace(CAMEL_CASE_REGEXP, function () {\n    for (var _len9 = arguments.length, m = new Array(_len9), _key9 = 0; _key9 < _len9; _key9++) {\n      m[_key9] = arguments[_key9];\n    }\n\n    return '-' + m[1].toLowerCase();\n  });\n}\n\nfunction normalizeDebugBindingValue(value) {\n  try {\n    // Limit the size of the value as otherwise the DOM just gets polluted.\n    return value != null ? value.toString().slice(0, 30) : value;\n  } catch (e) {\n    return '[ERROR] Exception while trying to serialize the value';\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Returns the matching `LContext` data for a given DOM node, directive or component instance.\n *\n * This function will examine the provided DOM element, component, or directive instance\\'s\n * monkey-patched property to derive the `LContext` data. Once called then the monkey-patched\n * value will be that of the newly created `LContext`.\n *\n * If the monkey-patched value is the `LView` instance then the context value for that\n * target will be created and the monkey-patch reference will be updated. Therefore when this\n * function is called it may mutate the provided element\\'s, component\\'s or any of the associated\n * directive\\'s monkey-patch values.\n *\n * If the monkey-patch value is not detected then the code will walk up the DOM until an element\n * is found which contains a monkey-patch reference. When that occurs then the provided element\n * will be updated with a new context (which is then returned). If the monkey-patch value is not\n * detected for a component/directive instance then it will throw an error (all components and\n * directives should be automatically monkey-patched by ivy).\n *\n * @param target Component, Directive or DOM Node.\n */\n\n\nfunction getLContext(target) {\n  var mpValue = readPatchedData(target);\n\n  if (mpValue) {\n    // only when it's an array is it considered an LView instance\n    // ... otherwise it's an already constructed LContext instance\n    if (Array.isArray(mpValue)) {\n      var lView = mpValue;\n      var nodeIndex;\n      var component = undefined;\n      var directives = undefined;\n\n      if (isComponentInstance(target)) {\n        nodeIndex = findViaComponent(lView, target);\n\n        if (nodeIndex == -1) {\n          throw new Error('The provided component was not found in the application');\n        }\n\n        component = target;\n      } else if (isDirectiveInstance(target)) {\n        nodeIndex = findViaDirective(lView, target);\n\n        if (nodeIndex == -1) {\n          throw new Error('The provided directive was not found in the application');\n        }\n\n        directives = getDirectivesAtNodeIndex(nodeIndex, lView, false);\n      } else {\n        nodeIndex = findViaNativeElement(lView, target);\n\n        if (nodeIndex == -1) {\n          return null;\n        }\n      } // the goal is not to fill the entire context full of data because the lookups\n      // are expensive. Instead, only the target data (the element, component, container, ICU\n      // expression or directive details) are filled into the context. If called multiple times\n      // with different target values then the missing target data will be filled in.\n\n\n      var native = unwrapRNode(lView[nodeIndex]);\n      var existingCtx = readPatchedData(native);\n      var context = existingCtx && !Array.isArray(existingCtx) ? existingCtx : createLContext(lView, nodeIndex, native); // only when the component has been discovered then update the monkey-patch\n\n      if (component && context.component === undefined) {\n        context.component = component;\n        attachPatchData(context.component, context);\n      } // only when the directives have been discovered then update the monkey-patch\n\n\n      if (directives && context.directives === undefined) {\n        context.directives = directives;\n\n        for (var i = 0; i < directives.length; i++) {\n          attachPatchData(directives[i], context);\n        }\n      }\n\n      attachPatchData(context.native, context);\n      mpValue = context;\n    }\n  } else {\n    var rElement = target;\n    ngDevMode && assertDomNode(rElement); // if the context is not found then we need to traverse upwards up the DOM\n    // to find the nearest element that has already been monkey patched with data\n\n    var parent = rElement;\n\n    while (parent = parent.parentNode) {\n      var parentContext = readPatchedData(parent);\n\n      if (parentContext) {\n        var _lView2 = void 0;\n\n        if (Array.isArray(parentContext)) {\n          _lView2 = parentContext;\n        } else {\n          _lView2 = parentContext.lView;\n        } // the edge of the app was also reached here through another means\n        // (maybe because the DOM was changed manually).\n\n\n        if (!_lView2) {\n          return null;\n        }\n\n        var index = findViaNativeElement(_lView2, rElement);\n\n        if (index >= 0) {\n          var _native = unwrapRNode(_lView2[index]);\n\n          var _context = createLContext(_lView2, index, _native);\n\n          attachPatchData(_native, _context);\n          mpValue = _context;\n          break;\n        }\n      }\n    }\n  }\n\n  return mpValue || null;\n}\n/**\n * Creates an empty instance of a `LContext` context\n */\n\n\nfunction createLContext(lView, nodeIndex, native) {\n  return {\n    lView: lView,\n    nodeIndex: nodeIndex,\n    native: native,\n    component: undefined,\n    directives: undefined,\n    localRefs: undefined\n  };\n}\n/**\n * Takes a component instance and returns the view for that component.\n *\n * @param componentInstance\n * @returns The component's view\n */\n\n\nfunction getComponentViewByInstance(componentInstance) {\n  var lView = readPatchedData(componentInstance);\n  var view;\n\n  if (Array.isArray(lView)) {\n    var nodeIndex = findViaComponent(lView, componentInstance);\n    view = getComponentLViewByIndex(nodeIndex, lView);\n    var context = createLContext(lView, nodeIndex, view[HOST]);\n    context.component = componentInstance;\n    attachPatchData(componentInstance, context);\n    attachPatchData(context.native, context);\n  } else {\n    var _context2 = lView;\n    view = getComponentLViewByIndex(_context2.nodeIndex, _context2.lView);\n  }\n\n  return view;\n}\n/**\n * Assigns the given data to the given target (which could be a component,\n * directive or DOM node instance) using monkey-patching.\n */\n\n\nfunction attachPatchData(target, data) {\n  target[MONKEY_PATCH_KEY_NAME] = data;\n}\n\nfunction isComponentInstance(instance) {\n  return instance && instance.constructor && instance.constructor.ɵcmp;\n}\n\nfunction isDirectiveInstance(instance) {\n  return instance && instance.constructor && instance.constructor.ɵdir;\n}\n/**\n * Locates the element within the given LView and returns the matching index\n */\n\n\nfunction findViaNativeElement(lView, target) {\n  var tView = lView[TVIEW];\n\n  for (var i = HEADER_OFFSET; i < tView.bindingStartIndex; i++) {\n    if (unwrapRNode(lView[i]) === target) {\n      return i;\n    }\n  }\n\n  return -1;\n}\n/**\n * Locates the next tNode (child, sibling or parent).\n */\n\n\nfunction traverseNextElement(tNode) {\n  if (tNode.child) {\n    return tNode.child;\n  } else if (tNode.next) {\n    return tNode.next;\n  } else {\n    // Let's take the following template: <div><span>text</span></div><component/>\n    // After checking the text node, we need to find the next parent that has a \"next\" TNode,\n    // in this case the parent `div`, so that we can find the component.\n    while (tNode.parent && !tNode.parent.next) {\n      tNode = tNode.parent;\n    }\n\n    return tNode.parent && tNode.parent.next;\n  }\n}\n/**\n * Locates the component within the given LView and returns the matching index\n */\n\n\nfunction findViaComponent(lView, componentInstance) {\n  var componentIndices = lView[TVIEW].components;\n\n  if (componentIndices) {\n    for (var i = 0; i < componentIndices.length; i++) {\n      var elementComponentIndex = componentIndices[i];\n      var componentView = getComponentLViewByIndex(elementComponentIndex, lView);\n\n      if (componentView[CONTEXT] === componentInstance) {\n        return elementComponentIndex;\n      }\n    }\n  } else {\n    var rootComponentView = getComponentLViewByIndex(HEADER_OFFSET, lView);\n    var rootComponent = rootComponentView[CONTEXT];\n\n    if (rootComponent === componentInstance) {\n      // we are dealing with the root element here therefore we know that the\n      // element is the very first element after the HEADER data in the lView\n      return HEADER_OFFSET;\n    }\n  }\n\n  return -1;\n}\n/**\n * Locates the directive within the given LView and returns the matching index\n */\n\n\nfunction findViaDirective(lView, directiveInstance) {\n  // if a directive is monkey patched then it will (by default)\n  // have a reference to the LView of the current view. The\n  // element bound to the directive being search lives somewhere\n  // in the view data. We loop through the nodes and check their\n  // list of directives for the instance.\n  var tNode = lView[TVIEW].firstChild;\n\n  while (tNode) {\n    var directiveIndexStart = tNode.directiveStart;\n    var directiveIndexEnd = tNode.directiveEnd;\n\n    for (var i = directiveIndexStart; i < directiveIndexEnd; i++) {\n      if (lView[i] === directiveInstance) {\n        return tNode.index;\n      }\n    }\n\n    tNode = traverseNextElement(tNode);\n  }\n\n  return -1;\n}\n/**\n * Returns a list of directives extracted from the given view based on the\n * provided list of directive index values.\n *\n * @param nodeIndex The node index\n * @param lView The target view data\n * @param includeComponents Whether or not to include components in returned directives\n */\n\n\nfunction getDirectivesAtNodeIndex(nodeIndex, lView, includeComponents) {\n  var tNode = lView[TVIEW].data[nodeIndex];\n  var directiveStartIndex = tNode.directiveStart;\n  if (directiveStartIndex == 0) return EMPTY_ARRAY;\n  var directiveEndIndex = tNode.directiveEnd;\n  if (!includeComponents && tNode.flags & 2\n  /* isComponentHost */\n  ) directiveStartIndex++;\n  return lView.slice(directiveStartIndex, directiveEndIndex);\n}\n\nfunction getComponentAtNodeIndex(nodeIndex, lView) {\n  var tNode = lView[TVIEW].data[nodeIndex];\n  var directiveStartIndex = tNode.directiveStart;\n  return tNode.flags & 2\n  /* isComponentHost */\n  ? lView[directiveStartIndex] : null;\n}\n/**\n * Returns a map of local references (local reference name => element or directive instance) that\n * exist on a given element.\n */\n\n\nfunction discoverLocalRefs(lView, nodeIndex) {\n  var tNode = lView[TVIEW].data[nodeIndex];\n\n  if (tNode && tNode.localNames) {\n    var result = {};\n    var localIndex = tNode.index + 1;\n\n    for (var i = 0; i < tNode.localNames.length; i += 2) {\n      result[tNode.localNames[i]] = lView[localIndex];\n      localIndex++;\n    }\n\n    return result;\n  }\n\n  return null;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ɵ0$4 = function ɵ0$4() {\n  return (typeof requestAnimationFrame !== 'undefined' && requestAnimationFrame || // browser only\n  setTimeout // everything else\n  ).bind(_global);\n};\n\nvar defaultScheduler = ɵ0$4();\n/**\n *\n * @codeGenApi\n */\n\nfunction ɵɵresolveWindow(element) {\n  return {\n    name: 'window',\n    target: element.ownerDocument.defaultView\n  };\n}\n/**\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵresolveDocument(element) {\n  return {\n    name: 'document',\n    target: element.ownerDocument\n  };\n}\n/**\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵresolveBody(element) {\n  return {\n    name: 'body',\n    target: element.ownerDocument.body\n  };\n}\n/**\n * The special delimiter we use to separate property names, prefixes, and suffixes\n * in property binding metadata. See storeBindingMetadata().\n *\n * We intentionally use the Unicode \"REPLACEMENT CHARACTER\" (U+FFFD) as a delimiter\n * because it is a very uncommon character that is unlikely to be part of a user's\n * property names or interpolation strings. If it is in fact used in a property\n * binding, DebugElement.properties will not return the correct value for that\n * binding. However, there should be no runtime effect for real applications.\n *\n * This character is typically rendered as a question mark inside of a diamond.\n * See https://en.wikipedia.org/wiki/Specials_(Unicode_block)\n *\n */\n\n\nvar INTERPOLATION_DELIMITER = \"\\uFFFD\";\n/**\n * Unwrap a value which might be behind a closure (for forward declaration reasons).\n */\n\nfunction maybeUnwrapFn(value) {\n  if (value instanceof Function) {\n    return value();\n  } else {\n    return value;\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/** Called when there are multiple component selectors that match a given node */\n\n\nfunction throwMultipleComponentError(tNode) {\n  throw new RuntimeError(\"300\"\n  /* MULTIPLE_COMPONENTS_MATCH */\n  , \"Multiple components match node with tagname \".concat(tNode.value));\n}\n/** Throws an ExpressionChangedAfterChecked error if checkNoChanges mode is on. */\n\n\nfunction throwErrorIfNoChangesMode(creationMode, oldValue, currValue, propName) {\n  var field = propName ? \" for '\".concat(propName, \"'\") : '';\n  var msg = \"ExpressionChangedAfterItHasBeenCheckedError: Expression has changed after it was checked. Previous value\".concat(field, \": '\").concat(oldValue, \"'. Current value: '\").concat(currValue, \"'.\");\n\n  if (creationMode) {\n    msg += \" It seems like the view has been created after its parent and its children have been dirty checked.\" + \" Has it been created in a change detection hook?\";\n  } // TODO: include debug context, see `viewDebugError` function in\n  // `packages/core/src/view/errors.ts` for reference.\n\n\n  throw new RuntimeError(\"100\"\n  /* EXPRESSION_CHANGED_AFTER_CHECKED */\n  , msg);\n}\n\nfunction constructDetailsForInterpolation(lView, rootIndex, expressionIndex, meta, changedValue) {\n  var _meta$split = meta.split(INTERPOLATION_DELIMITER),\n      _meta$split2 = _toArray(_meta$split),\n      propName = _meta$split2[0],\n      prefix = _meta$split2[1],\n      chunks = _meta$split2.slice(2);\n\n  var oldValue = prefix,\n      newValue = prefix;\n\n  for (var i = 0; i < chunks.length; i++) {\n    var slotIdx = rootIndex + i;\n    oldValue += \"\".concat(lView[slotIdx]).concat(chunks[i]);\n    newValue += \"\".concat(slotIdx === expressionIndex ? changedValue : lView[slotIdx]).concat(chunks[i]);\n  }\n\n  return {\n    propName: propName,\n    oldValue: oldValue,\n    newValue: newValue\n  };\n}\n/**\n * Constructs an object that contains details for the ExpressionChangedAfterItHasBeenCheckedError:\n * - property name (for property bindings or interpolations)\n * - old and new values, enriched using information from metadata\n *\n * More information on the metadata storage format can be found in `storePropertyBindingMetadata`\n * function description.\n */\n\n\nfunction getExpressionChangedErrorDetails(lView, bindingIndex, oldValue, newValue) {\n  var tData = lView[TVIEW].data;\n  var metadata = tData[bindingIndex];\n\n  if (typeof metadata === 'string') {\n    // metadata for property interpolation\n    if (metadata.indexOf(INTERPOLATION_DELIMITER) > -1) {\n      return constructDetailsForInterpolation(lView, bindingIndex, bindingIndex, metadata, newValue);\n    } // metadata for property binding\n\n\n    return {\n      propName: metadata,\n      oldValue: oldValue,\n      newValue: newValue\n    };\n  } // metadata is not available for this expression, check if this expression is a part of the\n  // property interpolation by going from the current binding index left and look for a string that\n  // contains INTERPOLATION_DELIMITER, the layout in tView.data for this case will look like this:\n  // [..., 'id�Prefix � and � suffix', null, null, null, ...]\n\n\n  if (metadata === null) {\n    var idx = bindingIndex - 1;\n\n    while (typeof tData[idx] !== 'string' && tData[idx + 1] === null) {\n      idx--;\n    }\n\n    var meta = tData[idx];\n\n    if (typeof meta === 'string') {\n      var matches = meta.match(new RegExp(INTERPOLATION_DELIMITER, 'g')); // first interpolation delimiter separates property name from interpolation parts (in case of\n      // property interpolations), so we subtract one from total number of found delimiters\n\n      if (matches && matches.length - 1 > bindingIndex - idx) {\n        return constructDetailsForInterpolation(lView, idx, bindingIndex, meta, newValue);\n      }\n    }\n  }\n\n  return {\n    propName: undefined,\n    oldValue: oldValue,\n    newValue: newValue\n  };\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Flags for renderer-specific style modifiers.\n * @publicApi\n */\n\n\nvar RendererStyleFlags2;\n\n(function (RendererStyleFlags2) {\n  // TODO(misko): This needs to be refactored into a separate file so that it can be imported from\n  // `node_manipulation.ts` Currently doing the import cause resolution order to change and fails\n  // the tests. The work around is to have hard coded value in `node_manipulation.ts` for now.\n\n  /**\n   * Marks a style as important.\n   */\n  RendererStyleFlags2[RendererStyleFlags2[\"Important\"] = 1] = \"Important\";\n  /**\n   * Marks a style as using dash case naming (this-is-dash-case).\n   */\n\n  RendererStyleFlags2[RendererStyleFlags2[\"DashCase\"] = 2] = \"DashCase\";\n})(RendererStyleFlags2 || (RendererStyleFlags2 = {}));\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar _icuContainerIterate;\n/**\n * Iterator which provides ability to visit all of the `TIcuContainerNode` root `RNode`s.\n */\n\n\nfunction icuContainerIterate(tIcuContainerNode, lView) {\n  return _icuContainerIterate(tIcuContainerNode, lView);\n}\n/**\n * Ensures that `IcuContainerVisitor`'s implementation is present.\n *\n * This function is invoked when i18n instruction comes across an ICU. The purpose is to allow the\n * bundler to tree shake ICU logic and only load it if ICU instruction is executed.\n */\n\n\nfunction ensureIcuContainerVisitorLoaded(loader) {\n  if (_icuContainerIterate === undefined) {\n    // Do not inline this function. We want to keep `ensureIcuContainerVisitorLoaded` light, so it\n    // can be inlined into call-site.\n    _icuContainerIterate = loader();\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\n\n\nvar unusedValueExportToPlacateAjd$5 = 1;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Gets the parent LView of the passed LView, if the PARENT is an LContainer, will get the parent of\n * that LContainer, which is an LView\n * @param lView the lView whose parent to get\n */\n\nfunction getLViewParent(lView) {\n  ngDevMode && assertLView(lView);\n  var parent = lView[PARENT];\n  return isLContainer(parent) ? parent[PARENT] : parent;\n}\n/**\n * Retrieve the root view from any component or `LView` by walking the parent `LView` until\n * reaching the root `LView`.\n *\n * @param componentOrLView any component or `LView`\n */\n\n\nfunction getRootView(componentOrLView) {\n  ngDevMode && assertDefined(componentOrLView, 'component');\n  var lView = isLView(componentOrLView) ? componentOrLView : readPatchedLView(componentOrLView);\n\n  while (lView && !(lView[FLAGS] & 512\n  /* IsRoot */\n  )) {\n    lView = getLViewParent(lView);\n  }\n\n  ngDevMode && assertLView(lView);\n  return lView;\n}\n/**\n * Returns the `RootContext` instance that is associated with\n * the application where the target is situated. It does this by walking the parent views until it\n * gets to the root view, then getting the context off of that.\n *\n * @param viewOrComponent the `LView` or component to get the root context for.\n */\n\n\nfunction getRootContext(viewOrComponent) {\n  var rootView = getRootView(viewOrComponent);\n  ngDevMode && assertDefined(rootView[CONTEXT], 'RootView has no context. Perhaps it is disconnected?');\n  return rootView[CONTEXT];\n}\n/**\n * Gets the first `LContainer` in the LView or `null` if none exists.\n */\n\n\nfunction getFirstLContainer(lView) {\n  return getNearestLContainer(lView[CHILD_HEAD]);\n}\n/**\n * Gets the next `LContainer` that is a sibling of the given container.\n */\n\n\nfunction getNextLContainer(container) {\n  return getNearestLContainer(container[NEXT]);\n}\n\nfunction getNearestLContainer(viewOrContainer) {\n  while (viewOrContainer !== null && !isLContainer(viewOrContainer)) {\n    viewOrContainer = viewOrContainer[NEXT];\n  }\n\n  return viewOrContainer;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar unusedValueToPlacateAjd = unusedValueExportToPlacateAjd$1 + unusedValueExportToPlacateAjd$4 + unusedValueExportToPlacateAjd$5 + unusedValueExportToPlacateAjd$2 + unusedValueExportToPlacateAjd;\n/**\n * NOTE: for performance reasons, the possible actions are inlined within the function instead of\n * being passed as an argument.\n */\n\nfunction applyToElementOrContainer(action, renderer, parent, lNodeToHandle, beforeNode) {\n  // If this slot was allocated for a text node dynamically created by i18n, the text node itself\n  // won't be created until i18nApply() in the update block, so this node should be skipped.\n  // For more info, see \"ICU expressions should work inside an ngTemplateOutlet inside an ngFor\"\n  // in `i18n_spec.ts`.\n  if (lNodeToHandle != null) {\n    var lContainer;\n    var isComponent = false; // We are expecting an RNode, but in the case of a component or LContainer the `RNode` is\n    // wrapped in an array which needs to be unwrapped. We need to know if it is a component and if\n    // it has LContainer so that we can process all of those cases appropriately.\n\n    if (isLContainer(lNodeToHandle)) {\n      lContainer = lNodeToHandle;\n    } else if (isLView(lNodeToHandle)) {\n      isComponent = true;\n      ngDevMode && assertDefined(lNodeToHandle[HOST], 'HOST must be defined for a component LView');\n      lNodeToHandle = lNodeToHandle[HOST];\n    }\n\n    var rNode = unwrapRNode(lNodeToHandle);\n    ngDevMode && !isProceduralRenderer(renderer) && assertDomNode(rNode);\n\n    if (action === 0\n    /* Create */\n    && parent !== null) {\n      if (beforeNode == null) {\n        nativeAppendChild(renderer, parent, rNode);\n      } else {\n        nativeInsertBefore(renderer, parent, rNode, beforeNode || null, true);\n      }\n    } else if (action === 1\n    /* Insert */\n    && parent !== null) {\n      nativeInsertBefore(renderer, parent, rNode, beforeNode || null, true);\n    } else if (action === 2\n    /* Detach */\n    ) {\n      nativeRemoveNode(renderer, rNode, isComponent);\n    } else if (action === 3\n    /* Destroy */\n    ) {\n      ngDevMode && ngDevMode.rendererDestroyNode++;\n      renderer.destroyNode(rNode);\n    }\n\n    if (lContainer != null) {\n      applyContainer(renderer, action, lContainer, parent, beforeNode);\n    }\n  }\n}\n\nfunction createTextNode(renderer, value) {\n  ngDevMode && ngDevMode.rendererCreateTextNode++;\n  ngDevMode && ngDevMode.rendererSetText++;\n  return isProceduralRenderer(renderer) ? renderer.createText(value) : renderer.createTextNode(value);\n}\n\nfunction updateTextNode(renderer, rNode, value) {\n  ngDevMode && ngDevMode.rendererSetText++;\n  isProceduralRenderer(renderer) ? renderer.setValue(rNode, value) : rNode.textContent = value;\n}\n\nfunction createCommentNode(renderer, value) {\n  ngDevMode && ngDevMode.rendererCreateComment++; // isProceduralRenderer check is not needed because both `Renderer2` and `Renderer3` have the same\n  // method name.\n\n  return renderer.createComment(value);\n}\n/**\n * Creates a native element from a tag name, using a renderer.\n * @param renderer A renderer to use\n * @param name the tag name\n * @param namespace Optional namespace for element.\n * @returns the element created\n */\n\n\nfunction createElementNode(renderer, name, namespace) {\n  ngDevMode && ngDevMode.rendererCreateElement++;\n\n  if (isProceduralRenderer(renderer)) {\n    return renderer.createElement(name, namespace);\n  } else {\n    return namespace === null ? renderer.createElement(name) : renderer.createElementNS(namespace, name);\n  }\n}\n/**\n * Removes all DOM elements associated with a view.\n *\n * Because some root nodes of the view may be containers, we sometimes need\n * to propagate deeply into the nested containers to remove all elements in the\n * views beneath it.\n *\n * @param tView The `TView' of the `LView` from which elements should be added or removed\n * @param lView The view from which elements should be added or removed\n */\n\n\nfunction removeViewFromContainer(tView, lView) {\n  var renderer = lView[RENDERER];\n  applyView(tView, lView, renderer, 2\n  /* Detach */\n  , null, null);\n  lView[HOST] = null;\n  lView[T_HOST] = null;\n}\n/**\n * Adds all DOM elements associated with a view.\n *\n * Because some root nodes of the view may be containers, we sometimes need\n * to propagate deeply into the nested containers to add all elements in the\n * views beneath it.\n *\n * @param tView The `TView' of the `LView` from which elements should be added or removed\n * @param parentTNode The `TNode` where the `LView` should be attached to.\n * @param renderer Current renderer to use for DOM manipulations.\n * @param lView The view from which elements should be added or removed\n * @param parentNativeNode The parent `RElement` where it should be inserted into.\n * @param beforeNode The node before which elements should be added, if insert mode\n */\n\n\nfunction addViewToContainer(tView, parentTNode, renderer, lView, parentNativeNode, beforeNode) {\n  lView[HOST] = parentNativeNode;\n  lView[T_HOST] = parentTNode;\n  applyView(tView, lView, renderer, 1\n  /* Insert */\n  , parentNativeNode, beforeNode);\n}\n/**\n * Detach a `LView` from the DOM by detaching its nodes.\n *\n * @param tView The `TView' of the `LView` to be detached\n * @param lView the `LView` to be detached.\n */\n\n\nfunction renderDetachView(tView, lView) {\n  applyView(tView, lView, lView[RENDERER], 2\n  /* Detach */\n  , null, null);\n}\n/**\n * Traverses down and up the tree of views and containers to remove listeners and\n * call onDestroy callbacks.\n *\n * Notes:\n *  - Because it's used for onDestroy calls, it needs to be bottom-up.\n *  - Must process containers instead of their views to avoid splicing\n *  when views are destroyed and re-added.\n *  - Using a while loop because it's faster than recursion\n *  - Destroy only called on movement to sibling or movement to parent (laterally or up)\n *\n *  @param rootView The view to destroy\n */\n\n\nfunction destroyViewTree(rootView) {\n  // If the view has no children, we can clean it up and return early.\n  var lViewOrLContainer = rootView[CHILD_HEAD];\n\n  if (!lViewOrLContainer) {\n    return cleanUpView(rootView[TVIEW], rootView);\n  }\n\n  while (lViewOrLContainer) {\n    var next = null;\n\n    if (isLView(lViewOrLContainer)) {\n      // If LView, traverse down to child.\n      next = lViewOrLContainer[CHILD_HEAD];\n    } else {\n      ngDevMode && assertLContainer(lViewOrLContainer); // If container, traverse down to its first LView.\n\n      var firstView = lViewOrLContainer[CONTAINER_HEADER_OFFSET];\n      if (firstView) next = firstView;\n    }\n\n    if (!next) {\n      // Only clean up view when moving to the side or up, as destroy hooks\n      // should be called in order from the bottom up.\n      while (lViewOrLContainer && !lViewOrLContainer[NEXT] && lViewOrLContainer !== rootView) {\n        if (isLView(lViewOrLContainer)) {\n          cleanUpView(lViewOrLContainer[TVIEW], lViewOrLContainer);\n        }\n\n        lViewOrLContainer = lViewOrLContainer[PARENT];\n      }\n\n      if (lViewOrLContainer === null) lViewOrLContainer = rootView;\n\n      if (isLView(lViewOrLContainer)) {\n        cleanUpView(lViewOrLContainer[TVIEW], lViewOrLContainer);\n      }\n\n      next = lViewOrLContainer && lViewOrLContainer[NEXT];\n    }\n\n    lViewOrLContainer = next;\n  }\n}\n/**\n * Inserts a view into a container.\n *\n * This adds the view to the container's array of active views in the correct\n * position. It also adds the view's elements to the DOM if the container isn't a\n * root node of another view (in that case, the view's elements will be added when\n * the container's parent view is added later).\n *\n * @param tView The `TView' of the `LView` to insert\n * @param lView The view to insert\n * @param lContainer The container into which the view should be inserted\n * @param index Which index in the container to insert the child view into\n */\n\n\nfunction insertView(tView, lView, lContainer, index) {\n  ngDevMode && assertLView(lView);\n  ngDevMode && assertLContainer(lContainer);\n  var indexInContainer = CONTAINER_HEADER_OFFSET + index;\n  var containerLength = lContainer.length;\n\n  if (index > 0) {\n    // This is a new view, we need to add it to the children.\n    lContainer[indexInContainer - 1][NEXT] = lView;\n  }\n\n  if (index < containerLength - CONTAINER_HEADER_OFFSET) {\n    lView[NEXT] = lContainer[indexInContainer];\n    addToArray(lContainer, CONTAINER_HEADER_OFFSET + index, lView);\n  } else {\n    lContainer.push(lView);\n    lView[NEXT] = null;\n  }\n\n  lView[PARENT] = lContainer; // track views where declaration and insertion points are different\n\n  var declarationLContainer = lView[DECLARATION_LCONTAINER];\n\n  if (declarationLContainer !== null && lContainer !== declarationLContainer) {\n    trackMovedView(declarationLContainer, lView);\n  } // notify query that a new view has been added\n\n\n  var lQueries = lView[QUERIES];\n\n  if (lQueries !== null) {\n    lQueries.insertView(tView);\n  } // Sets the attached flag\n\n\n  lView[FLAGS] |= 128\n  /* Attached */\n  ;\n}\n/**\n * Track views created from the declaration container (TemplateRef) and inserted into a\n * different LContainer.\n */\n\n\nfunction trackMovedView(declarationContainer, lView) {\n  ngDevMode && assertDefined(lView, 'LView required');\n  ngDevMode && assertLContainer(declarationContainer);\n  var movedViews = declarationContainer[MOVED_VIEWS];\n  var insertedLContainer = lView[PARENT];\n  ngDevMode && assertLContainer(insertedLContainer);\n  var insertedComponentLView = insertedLContainer[PARENT][DECLARATION_COMPONENT_VIEW];\n  ngDevMode && assertDefined(insertedComponentLView, 'Missing insertedComponentLView');\n  var declaredComponentLView = lView[DECLARATION_COMPONENT_VIEW];\n  ngDevMode && assertDefined(declaredComponentLView, 'Missing declaredComponentLView');\n\n  if (declaredComponentLView !== insertedComponentLView) {\n    // At this point the declaration-component is not same as insertion-component; this means that\n    // this is a transplanted view. Mark the declared lView as having transplanted views so that\n    // those views can participate in CD.\n    declarationContainer[HAS_TRANSPLANTED_VIEWS] = true;\n  }\n\n  if (movedViews === null) {\n    declarationContainer[MOVED_VIEWS] = [lView];\n  } else {\n    movedViews.push(lView);\n  }\n}\n\nfunction detachMovedView(declarationContainer, lView) {\n  ngDevMode && assertLContainer(declarationContainer);\n  ngDevMode && assertDefined(declarationContainer[MOVED_VIEWS], 'A projected view should belong to a non-empty projected views collection');\n  var movedViews = declarationContainer[MOVED_VIEWS];\n  var declarationViewIndex = movedViews.indexOf(lView);\n  var insertionLContainer = lView[PARENT];\n  ngDevMode && assertLContainer(insertionLContainer); // If the view was marked for refresh but then detached before it was checked (where the flag\n  // would be cleared and the counter decremented), we need to decrement the view counter here\n  // instead.\n\n  if (lView[FLAGS] & 1024\n  /* RefreshTransplantedView */\n  ) {\n    lView[FLAGS] &= ~1024\n    /* RefreshTransplantedView */\n    ;\n    updateTransplantedViewCount(insertionLContainer, -1);\n  }\n\n  movedViews.splice(declarationViewIndex, 1);\n}\n/**\n * Detaches a view from a container.\n *\n * This method removes the view from the container's array of active views. It also\n * removes the view's elements from the DOM.\n *\n * @param lContainer The container from which to detach a view\n * @param removeIndex The index of the view to detach\n * @returns Detached LView instance.\n */\n\n\nfunction detachView(lContainer, removeIndex) {\n  if (lContainer.length <= CONTAINER_HEADER_OFFSET) return;\n  var indexInContainer = CONTAINER_HEADER_OFFSET + removeIndex;\n  var viewToDetach = lContainer[indexInContainer];\n\n  if (viewToDetach) {\n    var declarationLContainer = viewToDetach[DECLARATION_LCONTAINER];\n\n    if (declarationLContainer !== null && declarationLContainer !== lContainer) {\n      detachMovedView(declarationLContainer, viewToDetach);\n    }\n\n    if (removeIndex > 0) {\n      lContainer[indexInContainer - 1][NEXT] = viewToDetach[NEXT];\n    }\n\n    var removedLView = removeFromArray(lContainer, CONTAINER_HEADER_OFFSET + removeIndex);\n    removeViewFromContainer(viewToDetach[TVIEW], viewToDetach); // notify query that a view has been removed\n\n    var lQueries = removedLView[QUERIES];\n\n    if (lQueries !== null) {\n      lQueries.detachView(removedLView[TVIEW]);\n    }\n\n    viewToDetach[PARENT] = null;\n    viewToDetach[NEXT] = null; // Unsets the attached flag\n\n    viewToDetach[FLAGS] &= ~128\n    /* Attached */\n    ;\n  }\n\n  return viewToDetach;\n}\n/**\n * A standalone function which destroys an LView,\n * conducting clean up (e.g. removing listeners, calling onDestroys).\n *\n * @param tView The `TView' of the `LView` to be destroyed\n * @param lView The view to be destroyed.\n */\n\n\nfunction destroyLView(tView, lView) {\n  if (!(lView[FLAGS] & 256\n  /* Destroyed */\n  )) {\n    var renderer = lView[RENDERER];\n\n    if (isProceduralRenderer(renderer) && renderer.destroyNode) {\n      applyView(tView, lView, renderer, 3\n      /* Destroy */\n      , null, null);\n    }\n\n    destroyViewTree(lView);\n  }\n}\n/**\n * Calls onDestroys hooks for all directives and pipes in a given view and then removes all\n * listeners. Listeners are removed as the last step so events delivered in the onDestroys hooks\n * can be propagated to @Output listeners.\n *\n * @param tView `TView` for the `LView` to clean up.\n * @param lView The LView to clean up\n */\n\n\nfunction cleanUpView(tView, lView) {\n  if (!(lView[FLAGS] & 256\n  /* Destroyed */\n  )) {\n    // Usually the Attached flag is removed when the view is detached from its parent, however\n    // if it's a root view, the flag won't be unset hence why we're also removing on destroy.\n    lView[FLAGS] &= ~128\n    /* Attached */\n    ; // Mark the LView as destroyed *before* executing the onDestroy hooks. An onDestroy hook\n    // runs arbitrary user code, which could include its own `viewRef.destroy()` (or similar). If\n    // We don't flag the view as destroyed before the hooks, this could lead to an infinite loop.\n    // This also aligns with the ViewEngine behavior. It also means that the onDestroy hook is\n    // really more of an \"afterDestroy\" hook if you think about it.\n\n    lView[FLAGS] |= 256\n    /* Destroyed */\n    ;\n    executeOnDestroys(tView, lView);\n    removeListeners(tView, lView); // For component views only, the local renderer is destroyed at clean up time.\n\n    if (lView[TVIEW].type === 1\n    /* Component */\n    && isProceduralRenderer(lView[RENDERER])) {\n      ngDevMode && ngDevMode.rendererDestroy++;\n      lView[RENDERER].destroy();\n    }\n\n    var declarationContainer = lView[DECLARATION_LCONTAINER]; // we are dealing with an embedded view that is still inserted into a container\n\n    if (declarationContainer !== null && isLContainer(lView[PARENT])) {\n      // and this is a projected view\n      if (declarationContainer !== lView[PARENT]) {\n        detachMovedView(declarationContainer, lView);\n      } // For embedded views still attached to a container: remove query result from this view.\n\n\n      var lQueries = lView[QUERIES];\n\n      if (lQueries !== null) {\n        lQueries.detachView(tView);\n      }\n    }\n  }\n}\n/** Removes listeners and unsubscribes from output subscriptions */\n\n\nfunction removeListeners(tView, lView) {\n  var tCleanup = tView.cleanup;\n\n  if (tCleanup !== null) {\n    var lCleanup = lView[CLEANUP];\n\n    for (var i = 0; i < tCleanup.length - 1; i += 2) {\n      if (typeof tCleanup[i] === 'string') {\n        // This is a native DOM listener\n        var idxOrTargetGetter = tCleanup[i + 1];\n        var target = typeof idxOrTargetGetter === 'function' ? idxOrTargetGetter(lView) : unwrapRNode(lView[idxOrTargetGetter]);\n        var listener = lCleanup[tCleanup[i + 2]];\n        var useCaptureOrSubIdx = tCleanup[i + 3];\n\n        if (typeof useCaptureOrSubIdx === 'boolean') {\n          // native DOM listener registered with Renderer3\n          target.removeEventListener(tCleanup[i], listener, useCaptureOrSubIdx);\n        } else {\n          if (useCaptureOrSubIdx >= 0) {\n            // unregister\n            lCleanup[useCaptureOrSubIdx]();\n          } else {\n            // Subscription\n            lCleanup[-useCaptureOrSubIdx].unsubscribe();\n          }\n        }\n\n        i += 2;\n      } else {\n        // This is a cleanup function that is grouped with the index of its context\n        var context = lCleanup[tCleanup[i + 1]];\n        tCleanup[i].call(context);\n      }\n    }\n\n    lView[CLEANUP] = null;\n  }\n}\n/** Calls onDestroy hooks for this view */\n\n\nfunction executeOnDestroys(tView, lView) {\n  var destroyHooks;\n\n  if (tView != null && (destroyHooks = tView.destroyHooks) != null) {\n    for (var i = 0; i < destroyHooks.length; i += 2) {\n      var context = lView[destroyHooks[i]]; // Only call the destroy hook if the context has been requested.\n\n      if (!(context instanceof NodeInjectorFactory)) {\n        var toCall = destroyHooks[i + 1];\n\n        if (Array.isArray(toCall)) {\n          for (var j = 0; j < toCall.length; j += 2) {\n            toCall[j + 1].call(context[toCall[j]]);\n          }\n        } else {\n          toCall.call(context);\n        }\n      }\n    }\n  }\n}\n/**\n * Returns a native element if a node can be inserted into the given parent.\n *\n * There are two reasons why we may not be able to insert a element immediately.\n * - Projection: When creating a child content element of a component, we have to skip the\n *   insertion because the content of a component will be projected.\n *   `<component><content>delayed due to projection</content></component>`\n * - Parent container is disconnected: This can happen when we are inserting a view into\n *   parent container, which itself is disconnected. For example the parent container is part\n *   of a View which has not be inserted or is made for projection but has not been inserted\n *   into destination.\n *\n * @param tView: Current `TView`.\n * @param tNode: `TNode` for which we wish to retrieve render parent.\n * @param lView: Current `LView`.\n */\n\n\nfunction getParentRElement(tView, tNode, lView) {\n  return getClosestRElement(tView, tNode.parent, lView);\n}\n/**\n * Get closest `RElement` or `null` if it can't be found.\n *\n * If `TNode` is `TNodeType.Element` => return `RElement` at `LView[tNode.index]` location.\n * If `TNode` is `TNodeType.ElementContainer|IcuContain` => return the parent (recursively).\n * If `TNode` is `null` then return host `RElement`:\n *   - return `null` if projection\n *   - return `null` if parent container is disconnected (we have no parent.)\n *\n * @param tView: Current `TView`.\n * @param tNode: `TNode` for which we wish to retrieve `RElement` (or `null` if host element is\n *     needed).\n * @param lView: Current `LView`.\n * @returns `null` if the `RElement` can't be determined at this time (no parent / projection)\n */\n\n\nfunction getClosestRElement(tView, tNode, lView) {\n  var parentTNode = tNode; // Skip over element and ICU containers as those are represented by a comment node and\n  // can't be used as a render parent.\n\n  while (parentTNode !== null && parentTNode.type & (8\n  /* ElementContainer */\n  | 32\n  /* Icu */\n  )) {\n    tNode = parentTNode;\n    parentTNode = tNode.parent;\n  } // If the parent tNode is null, then we are inserting across views: either into an embedded view\n  // or a component view.\n\n\n  if (parentTNode === null) {\n    // We are inserting a root element of the component view into the component host element and\n    // it should always be eager.\n    return lView[HOST];\n  } else {\n    ngDevMode && assertTNodeType(parentTNode, 3\n    /* AnyRNode */\n    | 4\n    /* Container */\n    );\n\n    if (parentTNode.flags & 2\n    /* isComponentHost */\n    ) {\n      ngDevMode && assertTNodeForLView(parentTNode, lView);\n      var encapsulation = tView.data[parentTNode.directiveStart].encapsulation; // We've got a parent which is an element in the current view. We just need to verify if the\n      // parent element is not a component. Component's content nodes are not inserted immediately\n      // because they will be projected, and so doing insert at this point would be wasteful.\n      // Since the projection would then move it to its final destination. Note that we can't\n      // make this assumption when using the Shadow DOM, because the native projection placeholders\n      // (<content> or <slot>) have to be in place as elements are being inserted.\n\n      if (encapsulation === ViewEncapsulation$1.None || encapsulation === ViewEncapsulation$1.Emulated) {\n        return null;\n      }\n    }\n\n    return getNativeByTNode(parentTNode, lView);\n  }\n}\n/**\n * Inserts a native node before another native node for a given parent using {@link Renderer3}.\n * This is a utility function that can be used when native nodes were determined - it abstracts an\n * actual renderer being used.\n */\n\n\nfunction nativeInsertBefore(renderer, parent, child, beforeNode, isMove) {\n  ngDevMode && ngDevMode.rendererInsertBefore++;\n\n  if (isProceduralRenderer(renderer)) {\n    renderer.insertBefore(parent, child, beforeNode, isMove);\n  } else {\n    parent.insertBefore(child, beforeNode, isMove);\n  }\n}\n\nfunction nativeAppendChild(renderer, parent, child) {\n  ngDevMode && ngDevMode.rendererAppendChild++;\n  ngDevMode && assertDefined(parent, 'parent node must be defined');\n\n  if (isProceduralRenderer(renderer)) {\n    renderer.appendChild(parent, child);\n  } else {\n    parent.appendChild(child);\n  }\n}\n\nfunction nativeAppendOrInsertBefore(renderer, parent, child, beforeNode, isMove) {\n  if (beforeNode !== null) {\n    nativeInsertBefore(renderer, parent, child, beforeNode, isMove);\n  } else {\n    nativeAppendChild(renderer, parent, child);\n  }\n}\n/** Removes a node from the DOM given its native parent. */\n\n\nfunction nativeRemoveChild(renderer, parent, child, isHostElement) {\n  if (isProceduralRenderer(renderer)) {\n    renderer.removeChild(parent, child, isHostElement);\n  } else {\n    parent.removeChild(child);\n  }\n}\n/**\n * Returns a native parent of a given native node.\n */\n\n\nfunction nativeParentNode(renderer, node) {\n  return isProceduralRenderer(renderer) ? renderer.parentNode(node) : node.parentNode;\n}\n/**\n * Returns a native sibling of a given native node.\n */\n\n\nfunction nativeNextSibling(renderer, node) {\n  return isProceduralRenderer(renderer) ? renderer.nextSibling(node) : node.nextSibling;\n}\n/**\n * Find a node in front of which `currentTNode` should be inserted.\n *\n * This method determines the `RNode` in front of which we should insert the `currentRNode`. This\n * takes `TNode.insertBeforeIndex` into account if i18n code has been invoked.\n *\n * @param parentTNode parent `TNode`\n * @param currentTNode current `TNode` (The node which we would like to insert into the DOM)\n * @param lView current `LView`\n */\n\n\nfunction getInsertInFrontOfRNode(parentTNode, currentTNode, lView) {\n  return _getInsertInFrontOfRNodeWithI18n(parentTNode, currentTNode, lView);\n}\n/**\n * Find a node in front of which `currentTNode` should be inserted. (Does not take i18n into\n * account)\n *\n * This method determines the `RNode` in front of which we should insert the `currentRNode`. This\n * does not take `TNode.insertBeforeIndex` into account.\n *\n * @param parentTNode parent `TNode`\n * @param currentTNode current `TNode` (The node which we would like to insert into the DOM)\n * @param lView current `LView`\n */\n\n\nfunction getInsertInFrontOfRNodeWithNoI18n(parentTNode, currentTNode, lView) {\n  if (parentTNode.type & (8\n  /* ElementContainer */\n  | 32\n  /* Icu */\n  )) {\n    return getNativeByTNode(parentTNode, lView);\n  }\n\n  return null;\n}\n/**\n * Tree shakable boundary for `getInsertInFrontOfRNodeWithI18n` function.\n *\n * This function will only be set if i18n code runs.\n */\n\n\nvar _getInsertInFrontOfRNodeWithI18n = getInsertInFrontOfRNodeWithNoI18n;\n/**\n * Tree shakable boundary for `processI18nInsertBefore` function.\n *\n * This function will only be set if i18n code runs.\n */\n\nvar _processI18nInsertBefore;\n\nfunction setI18nHandling(getInsertInFrontOfRNodeWithI18n, processI18nInsertBefore) {\n  _getInsertInFrontOfRNodeWithI18n = getInsertInFrontOfRNodeWithI18n;\n  _processI18nInsertBefore = processI18nInsertBefore;\n}\n/**\n * Appends the `child` native node (or a collection of nodes) to the `parent`.\n *\n * @param tView The `TView' to be appended\n * @param lView The current LView\n * @param childRNode The native child (or children) that should be appended\n * @param childTNode The TNode of the child element\n */\n\n\nfunction appendChild(tView, lView, childRNode, childTNode) {\n  var parentRNode = getParentRElement(tView, childTNode, lView);\n  var renderer = lView[RENDERER];\n  var parentTNode = childTNode.parent || lView[T_HOST];\n  var anchorNode = getInsertInFrontOfRNode(parentTNode, childTNode, lView);\n\n  if (parentRNode != null) {\n    if (Array.isArray(childRNode)) {\n      for (var i = 0; i < childRNode.length; i++) {\n        nativeAppendOrInsertBefore(renderer, parentRNode, childRNode[i], anchorNode, false);\n      }\n    } else {\n      nativeAppendOrInsertBefore(renderer, parentRNode, childRNode, anchorNode, false);\n    }\n  }\n\n  _processI18nInsertBefore !== undefined && _processI18nInsertBefore(renderer, childTNode, lView, childRNode, parentRNode);\n}\n/**\n * Returns the first native node for a given LView, starting from the provided TNode.\n *\n * Native nodes are returned in the order in which those appear in the native tree (DOM).\n */\n\n\nfunction getFirstNativeNode(lView, tNode) {\n  if (tNode !== null) {\n    ngDevMode && assertTNodeType(tNode, 3\n    /* AnyRNode */\n    | 12\n    /* AnyContainer */\n    | 32\n    /* Icu */\n    | 16\n    /* Projection */\n    );\n    var tNodeType = tNode.type;\n\n    if (tNodeType & 3\n    /* AnyRNode */\n    ) {\n      return getNativeByTNode(tNode, lView);\n    } else if (tNodeType & 4\n    /* Container */\n    ) {\n      return getBeforeNodeForView(-1, lView[tNode.index]);\n    } else if (tNodeType & 8\n    /* ElementContainer */\n    ) {\n      var elIcuContainerChild = tNode.child;\n\n      if (elIcuContainerChild !== null) {\n        return getFirstNativeNode(lView, elIcuContainerChild);\n      } else {\n        var rNodeOrLContainer = lView[tNode.index];\n\n        if (isLContainer(rNodeOrLContainer)) {\n          return getBeforeNodeForView(-1, rNodeOrLContainer);\n        } else {\n          return unwrapRNode(rNodeOrLContainer);\n        }\n      }\n    } else if (tNodeType & 32\n    /* Icu */\n    ) {\n      var nextRNode = icuContainerIterate(tNode, lView);\n      var rNode = nextRNode(); // If the ICU container has no nodes, than we use the ICU anchor as the node.\n\n      return rNode || unwrapRNode(lView[tNode.index]);\n    } else {\n      var componentView = lView[DECLARATION_COMPONENT_VIEW];\n      var componentHost = componentView[T_HOST];\n      var parentView = getLViewParent(componentView);\n      var firstProjectedTNode = componentHost.projection[tNode.projection];\n\n      if (firstProjectedTNode != null) {\n        return getFirstNativeNode(parentView, firstProjectedTNode);\n      } else {\n        return getFirstNativeNode(lView, tNode.next);\n      }\n    }\n  }\n\n  return null;\n}\n\nfunction getBeforeNodeForView(viewIndexInContainer, lContainer) {\n  var nextViewIndex = CONTAINER_HEADER_OFFSET + viewIndexInContainer + 1;\n\n  if (nextViewIndex < lContainer.length) {\n    var lView = lContainer[nextViewIndex];\n    var firstTNodeOfView = lView[TVIEW].firstChild;\n\n    if (firstTNodeOfView !== null) {\n      return getFirstNativeNode(lView, firstTNodeOfView);\n    }\n  }\n\n  return lContainer[NATIVE];\n}\n/**\n * Removes a native node itself using a given renderer. To remove the node we are looking up its\n * parent from the native tree as not all platforms / browsers support the equivalent of\n * node.remove().\n *\n * @param renderer A renderer to be used\n * @param rNode The native node that should be removed\n * @param isHostElement A flag indicating if a node to be removed is a host of a component.\n */\n\n\nfunction nativeRemoveNode(renderer, rNode, isHostElement) {\n  ngDevMode && ngDevMode.rendererRemoveNode++;\n  var nativeParent = nativeParentNode(renderer, rNode);\n\n  if (nativeParent) {\n    nativeRemoveChild(renderer, nativeParent, rNode, isHostElement);\n  }\n}\n/**\n * Performs the operation of `action` on the node. Typically this involves inserting or removing\n * nodes on the LView or projection boundary.\n */\n\n\nfunction applyNodes(renderer, action, tNode, lView, parentRElement, beforeNode, isProjection) {\n  while (tNode != null) {\n    ngDevMode && assertTNodeForLView(tNode, lView);\n    ngDevMode && assertTNodeType(tNode, 3\n    /* AnyRNode */\n    | 12\n    /* AnyContainer */\n    | 16\n    /* Projection */\n    | 32\n    /* Icu */\n    );\n    var rawSlotValue = lView[tNode.index];\n    var tNodeType = tNode.type;\n\n    if (isProjection) {\n      if (action === 0\n      /* Create */\n      ) {\n        rawSlotValue && attachPatchData(unwrapRNode(rawSlotValue), lView);\n        tNode.flags |= 4\n        /* isProjected */\n        ;\n      }\n    }\n\n    if ((tNode.flags & 64\n    /* isDetached */\n    ) !== 64\n    /* isDetached */\n    ) {\n      if (tNodeType & 8\n      /* ElementContainer */\n      ) {\n        applyNodes(renderer, action, tNode.child, lView, parentRElement, beforeNode, false);\n        applyToElementOrContainer(action, renderer, parentRElement, rawSlotValue, beforeNode);\n      } else if (tNodeType & 32\n      /* Icu */\n      ) {\n        var nextRNode = icuContainerIterate(tNode, lView);\n        var rNode = void 0;\n\n        while (rNode = nextRNode()) {\n          applyToElementOrContainer(action, renderer, parentRElement, rNode, beforeNode);\n        }\n\n        applyToElementOrContainer(action, renderer, parentRElement, rawSlotValue, beforeNode);\n      } else if (tNodeType & 16\n      /* Projection */\n      ) {\n        applyProjectionRecursive(renderer, action, lView, tNode, parentRElement, beforeNode);\n      } else {\n        ngDevMode && assertTNodeType(tNode, 3\n        /* AnyRNode */\n        | 4\n        /* Container */\n        );\n        applyToElementOrContainer(action, renderer, parentRElement, rawSlotValue, beforeNode);\n      }\n    }\n\n    tNode = isProjection ? tNode.projectionNext : tNode.next;\n  }\n}\n\nfunction applyView(tView, lView, renderer, action, parentRElement, beforeNode) {\n  applyNodes(renderer, action, tView.firstChild, lView, parentRElement, beforeNode, false);\n}\n/**\n * `applyProjection` performs operation on the projection.\n *\n * Inserting a projection requires us to locate the projected nodes from the parent component. The\n * complication is that those nodes themselves could be re-projected from their parent component.\n *\n * @param tView The `TView` of `LView` which needs to be inserted, detached, destroyed\n * @param lView The `LView` which needs to be inserted, detached, destroyed.\n * @param tProjectionNode node to project\n */\n\n\nfunction applyProjection(tView, lView, tProjectionNode) {\n  var renderer = lView[RENDERER];\n  var parentRNode = getParentRElement(tView, tProjectionNode, lView);\n  var parentTNode = tProjectionNode.parent || lView[T_HOST];\n  var beforeNode = getInsertInFrontOfRNode(parentTNode, tProjectionNode, lView);\n  applyProjectionRecursive(renderer, 0\n  /* Create */\n  , lView, tProjectionNode, parentRNode, beforeNode);\n}\n/**\n * `applyProjectionRecursive` performs operation on the projection specified by `action` (insert,\n * detach, destroy)\n *\n * Inserting a projection requires us to locate the projected nodes from the parent component. The\n * complication is that those nodes themselves could be re-projected from their parent component.\n *\n * @param renderer Render to use\n * @param action action to perform (insert, detach, destroy)\n * @param lView The LView which needs to be inserted, detached, destroyed.\n * @param tProjectionNode node to project\n * @param parentRElement parent DOM element for insertion/removal.\n * @param beforeNode Before which node the insertions should happen.\n */\n\n\nfunction applyProjectionRecursive(renderer, action, lView, tProjectionNode, parentRElement, beforeNode) {\n  var componentLView = lView[DECLARATION_COMPONENT_VIEW];\n  var componentNode = componentLView[T_HOST];\n  ngDevMode && assertEqual(_typeof(tProjectionNode.projection), 'number', 'expecting projection index');\n  var nodeToProjectOrRNodes = componentNode.projection[tProjectionNode.projection];\n\n  if (Array.isArray(nodeToProjectOrRNodes)) {\n    // This should not exist, it is a bit of a hack. When we bootstrap a top level node and we\n    // need to support passing projectable nodes, so we cheat and put them in the TNode\n    // of the Host TView. (Yes we put instance info at the T Level). We can get away with it\n    // because we know that that TView is not shared and therefore it will not be a problem.\n    // This should be refactored and cleaned up.\n    for (var i = 0; i < nodeToProjectOrRNodes.length; i++) {\n      var rNode = nodeToProjectOrRNodes[i];\n      applyToElementOrContainer(action, renderer, parentRElement, rNode, beforeNode);\n    }\n  } else {\n    var nodeToProject = nodeToProjectOrRNodes;\n    var projectedComponentLView = componentLView[PARENT];\n    applyNodes(renderer, action, nodeToProject, projectedComponentLView, parentRElement, beforeNode, true);\n  }\n}\n/**\n * `applyContainer` performs an operation on the container and its views as specified by\n * `action` (insert, detach, destroy)\n *\n * Inserting a Container is complicated by the fact that the container may have Views which\n * themselves have containers or projections.\n *\n * @param renderer Renderer to use\n * @param action action to perform (insert, detach, destroy)\n * @param lContainer The LContainer which needs to be inserted, detached, destroyed.\n * @param parentRElement parent DOM element for insertion/removal.\n * @param beforeNode Before which node the insertions should happen.\n */\n\n\nfunction applyContainer(renderer, action, lContainer, parentRElement, beforeNode) {\n  ngDevMode && assertLContainer(lContainer);\n  var anchor = lContainer[NATIVE]; // LContainer has its own before node.\n\n  var native = unwrapRNode(lContainer); // An LContainer can be created dynamically on any node by injecting ViewContainerRef.\n  // Asking for a ViewContainerRef on an element will result in a creation of a separate anchor\n  // node (comment in the DOM) that will be different from the LContainer's host node. In this\n  // particular case we need to execute action on 2 nodes:\n  // - container's host node (this is done in the executeActionOnElementOrContainer)\n  // - container's host node (this is done here)\n\n  if (anchor !== native) {\n    // This is very strange to me (Misko). I would expect that the native is same as anchor. I\n    // don't see a reason why they should be different, but they are.\n    //\n    // If they are we need to process the second anchor as well.\n    applyToElementOrContainer(action, renderer, parentRElement, anchor, beforeNode);\n  }\n\n  for (var i = CONTAINER_HEADER_OFFSET; i < lContainer.length; i++) {\n    var lView = lContainer[i];\n    applyView(lView[TVIEW], lView, renderer, action, parentRElement, anchor);\n  }\n}\n/**\n * Writes class/style to element.\n *\n * @param renderer Renderer to use.\n * @param isClassBased `true` if it should be written to `class` (`false` to write to `style`)\n * @param rNode The Node to write to.\n * @param prop Property to write to. This would be the class/style name.\n * @param value Value to write. If `null`/`undefined`/`false` this is considered a remove (set/add\n *        otherwise).\n */\n\n\nfunction applyStyling(renderer, isClassBased, rNode, prop, value) {\n  var isProcedural = isProceduralRenderer(renderer);\n\n  if (isClassBased) {\n    // We actually want JS true/false here because any truthy value should add the class\n    if (!value) {\n      ngDevMode && ngDevMode.rendererRemoveClass++;\n\n      if (isProcedural) {\n        renderer.removeClass(rNode, prop);\n      } else {\n        rNode.classList.remove(prop);\n      }\n    } else {\n      ngDevMode && ngDevMode.rendererAddClass++;\n\n      if (isProcedural) {\n        renderer.addClass(rNode, prop);\n      } else {\n        ngDevMode && assertDefined(rNode.classList, 'HTMLElement expected');\n        rNode.classList.add(prop);\n      }\n    }\n  } else {\n    var flags = prop.indexOf('-') === -1 ? undefined : RendererStyleFlags2.DashCase;\n\n    if (value == null\n    /** || value === undefined */\n    ) {\n      ngDevMode && ngDevMode.rendererRemoveStyle++;\n\n      if (isProcedural) {\n        renderer.removeStyle(rNode, prop, flags);\n      } else {\n        rNode.style.removeProperty(prop);\n      }\n    } else {\n      // A value is important if it ends with `!important`. The style\n      // parser strips any semicolons at the end of the value.\n      var isImportant = typeof value === 'string' ? value.endsWith('!important') : false;\n\n      if (isImportant) {\n        // !important has to be stripped from the value for it to be valid.\n        value = value.slice(0, -10);\n        flags |= RendererStyleFlags2.Important;\n      }\n\n      ngDevMode && ngDevMode.rendererSetStyle++;\n\n      if (isProcedural) {\n        renderer.setStyle(rNode, prop, value, flags);\n      } else {\n        ngDevMode && assertDefined(rNode.style, 'HTMLElement expected');\n        rNode.style.setProperty(prop, value, isImportant ? 'important' : '');\n      }\n    }\n  }\n}\n/**\n * Write `cssText` to `RElement`.\n *\n * This function does direct write without any reconciliation. Used for writing initial values, so\n * that static styling values do not pull in the style parser.\n *\n * @param renderer Renderer to use\n * @param element The element which needs to be updated.\n * @param newValue The new class list to write.\n */\n\n\nfunction writeDirectStyle(renderer, element, newValue) {\n  ngDevMode && assertString(newValue, '\\'newValue\\' should be a string');\n\n  if (isProceduralRenderer(renderer)) {\n    renderer.setAttribute(element, 'style', newValue);\n  } else {\n    element.style.cssText = newValue;\n  }\n\n  ngDevMode && ngDevMode.rendererSetStyle++;\n}\n/**\n * Write `className` to `RElement`.\n *\n * This function does direct write without any reconciliation. Used for writing initial values, so\n * that static styling values do not pull in the style parser.\n *\n * @param renderer Renderer to use\n * @param element The element which needs to be updated.\n * @param newValue The new class list to write.\n */\n\n\nfunction writeDirectClass(renderer, element, newValue) {\n  ngDevMode && assertString(newValue, '\\'newValue\\' should be a string');\n\n  if (isProceduralRenderer(renderer)) {\n    if (newValue === '') {\n      // There are tests in `google3` which expect `element.getAttribute('class')` to be `null`.\n      renderer.removeAttribute(element, 'class');\n    } else {\n      renderer.setAttribute(element, 'class', newValue);\n    }\n  } else {\n    element.className = newValue;\n  }\n\n  ngDevMode && ngDevMode.rendererSetClassName++;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Returns an index of `classToSearch` in `className` taking token boundaries into account.\n *\n * `classIndexOf('AB A', 'A', 0)` will be 3 (not 0 since `AB!==A`)\n *\n * @param className A string containing classes (whitespace separated)\n * @param classToSearch A class name to locate\n * @param startingIndex Starting location of search\n * @returns an index of the located class (or -1 if not found)\n */\n\n\nfunction classIndexOf(className, classToSearch, startingIndex) {\n  ngDevMode && assertNotEqual(classToSearch, '', 'can not look for \"\" string.');\n  var end = className.length;\n\n  while (true) {\n    var foundIndex = className.indexOf(classToSearch, startingIndex);\n    if (foundIndex === -1) return foundIndex;\n\n    if (foundIndex === 0 || className.charCodeAt(foundIndex - 1) <= 32\n    /* SPACE */\n    ) {\n      // Ensure that it has leading whitespace\n      var length = classToSearch.length;\n\n      if (foundIndex + length === end || className.charCodeAt(foundIndex + length) <= 32\n      /* SPACE */\n      ) {\n        // Ensure that it has trailing whitespace\n        return foundIndex;\n      }\n    } // False positive, keep searching from where we left off.\n\n\n    startingIndex = foundIndex + 1;\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar unusedValueToPlacateAjd$1 = unusedValueExportToPlacateAjd$4 + unusedValueExportToPlacateAjd$5;\nvar NG_TEMPLATE_SELECTOR = 'ng-template';\n/**\n * Search the `TAttributes` to see if it contains `cssClassToMatch` (case insensitive)\n *\n * @param attrs `TAttributes` to search through.\n * @param cssClassToMatch class to match (lowercase)\n * @param isProjectionMode Whether or not class matching should look into the attribute `class` in\n *    addition to the `AttributeMarker.Classes`.\n */\n\nfunction isCssClassMatching(attrs, cssClassToMatch, isProjectionMode) {\n  // TODO(misko): The fact that this function needs to know about `isProjectionMode` seems suspect.\n  // It is strange to me that sometimes the class information comes in form of `class` attribute\n  // and sometimes in form of `AttributeMarker.Classes`. Some investigation is needed to determine\n  // if that is the right behavior.\n  ngDevMode && assertEqual(cssClassToMatch, cssClassToMatch.toLowerCase(), 'Class name expected to be lowercase.');\n  var i = 0;\n\n  while (i < attrs.length) {\n    var item = attrs[i++];\n\n    if (isProjectionMode && item === 'class') {\n      item = attrs[i];\n\n      if (classIndexOf(item.toLowerCase(), cssClassToMatch, 0) !== -1) {\n        return true;\n      }\n    } else if (item === 1\n    /* Classes */\n    ) {\n      // We found the classes section. Start searching for the class.\n      while (i < attrs.length && typeof (item = attrs[i++]) == 'string') {\n        // while we have strings\n        if (item.toLowerCase() === cssClassToMatch) return true;\n      }\n\n      return false;\n    }\n  }\n\n  return false;\n}\n/**\n * Checks whether the `tNode` represents an inline template (e.g. `*ngFor`).\n *\n * @param tNode current TNode\n */\n\n\nfunction isInlineTemplate(tNode) {\n  return tNode.type === 4\n  /* Container */\n  && tNode.value !== NG_TEMPLATE_SELECTOR;\n}\n/**\n * Function that checks whether a given tNode matches tag-based selector and has a valid type.\n *\n * Matching can be performed in 2 modes: projection mode (when we project nodes) and regular\n * directive matching mode:\n * - in the \"directive matching\" mode we do _not_ take TContainer's tagName into account if it is\n * different from NG_TEMPLATE_SELECTOR (value different from NG_TEMPLATE_SELECTOR indicates that a\n * tag name was extracted from * syntax so we would match the same directive twice);\n * - in the \"projection\" mode, we use a tag name potentially extracted from the * syntax processing\n * (applicable to TNodeType.Container only).\n */\n\n\nfunction hasTagAndTypeMatch(tNode, currentSelector, isProjectionMode) {\n  var tagNameToCompare = tNode.type === 4\n  /* Container */\n  && !isProjectionMode ? NG_TEMPLATE_SELECTOR : tNode.value;\n  return currentSelector === tagNameToCompare;\n}\n/**\n * A utility function to match an Ivy node static data against a simple CSS selector\n *\n * @param node static data of the node to match\n * @param selector The selector to try matching against the node.\n * @param isProjectionMode if `true` we are matching for content projection, otherwise we are doing\n * directive matching.\n * @returns true if node matches the selector.\n */\n\n\nfunction isNodeMatchingSelector(tNode, selector, isProjectionMode) {\n  ngDevMode && assertDefined(selector[0], 'Selector should have a tag name');\n  var mode = 4\n  /* ELEMENT */\n  ;\n  var nodeAttrs = tNode.attrs || []; // Find the index of first attribute that has no value, only a name.\n\n  var nameOnlyMarkerIdx = getNameOnlyMarkerIndex(nodeAttrs); // When processing \":not\" selectors, we skip to the next \":not\" if the\n  // current one doesn't match\n\n  var skipToNextSelector = false;\n\n  for (var i = 0; i < selector.length; i++) {\n    var current = selector[i];\n\n    if (typeof current === 'number') {\n      // If we finish processing a :not selector and it hasn't failed, return false\n      if (!skipToNextSelector && !isPositive(mode) && !isPositive(current)) {\n        return false;\n      } // If we are skipping to the next :not() and this mode flag is positive,\n      // it's a part of the current :not() selector, and we should keep skipping\n\n\n      if (skipToNextSelector && isPositive(current)) continue;\n      skipToNextSelector = false;\n      mode = current | mode & 1\n      /* NOT */\n      ;\n      continue;\n    }\n\n    if (skipToNextSelector) continue;\n\n    if (mode & 4\n    /* ELEMENT */\n    ) {\n      mode = 2\n      /* ATTRIBUTE */\n      | mode & 1\n      /* NOT */\n      ;\n\n      if (current !== '' && !hasTagAndTypeMatch(tNode, current, isProjectionMode) || current === '' && selector.length === 1) {\n        if (isPositive(mode)) return false;\n        skipToNextSelector = true;\n      }\n    } else {\n      var selectorAttrValue = mode & 8\n      /* CLASS */\n      ? current : selector[++i]; // special case for matching against classes when a tNode has been instantiated with\n      // class and style values as separate attribute values (e.g. ['title', CLASS, 'foo'])\n\n      if (mode & 8\n      /* CLASS */\n      && tNode.attrs !== null) {\n        if (!isCssClassMatching(tNode.attrs, selectorAttrValue, isProjectionMode)) {\n          if (isPositive(mode)) return false;\n          skipToNextSelector = true;\n        }\n\n        continue;\n      }\n\n      var attrName = mode & 8\n      /* CLASS */\n      ? 'class' : current;\n      var attrIndexInNode = findAttrIndexInNode(attrName, nodeAttrs, isInlineTemplate(tNode), isProjectionMode);\n\n      if (attrIndexInNode === -1) {\n        if (isPositive(mode)) return false;\n        skipToNextSelector = true;\n        continue;\n      }\n\n      if (selectorAttrValue !== '') {\n        var nodeAttrValue = void 0;\n\n        if (attrIndexInNode > nameOnlyMarkerIdx) {\n          nodeAttrValue = '';\n        } else {\n          ngDevMode && assertNotEqual(nodeAttrs[attrIndexInNode], 0\n          /* NamespaceURI */\n          , 'We do not match directives on namespaced attributes'); // we lowercase the attribute value to be able to match\n          // selectors without case-sensitivity\n          // (selectors are already in lowercase when generated)\n\n          nodeAttrValue = nodeAttrs[attrIndexInNode + 1].toLowerCase();\n        }\n\n        var compareAgainstClassName = mode & 8\n        /* CLASS */\n        ? nodeAttrValue : null;\n\n        if (compareAgainstClassName && classIndexOf(compareAgainstClassName, selectorAttrValue, 0) !== -1 || mode & 2\n        /* ATTRIBUTE */\n        && selectorAttrValue !== nodeAttrValue) {\n          if (isPositive(mode)) return false;\n          skipToNextSelector = true;\n        }\n      }\n    }\n  }\n\n  return isPositive(mode) || skipToNextSelector;\n}\n\nfunction isPositive(mode) {\n  return (mode & 1\n  /* NOT */\n  ) === 0;\n}\n/**\n * Examines the attribute's definition array for a node to find the index of the\n * attribute that matches the given `name`.\n *\n * NOTE: This will not match namespaced attributes.\n *\n * Attribute matching depends upon `isInlineTemplate` and `isProjectionMode`.\n * The following table summarizes which types of attributes we attempt to match:\n *\n * ===========================================================================================================\n * Modes                   | Normal Attributes | Bindings Attributes | Template Attributes | I18n\n * Attributes\n * ===========================================================================================================\n * Inline + Projection     | YES               | YES                 | NO                  | YES\n * -----------------------------------------------------------------------------------------------------------\n * Inline + Directive      | NO                | NO                  | YES                 | NO\n * -----------------------------------------------------------------------------------------------------------\n * Non-inline + Projection | YES               | YES                 | NO                  | YES\n * -----------------------------------------------------------------------------------------------------------\n * Non-inline + Directive  | YES               | YES                 | NO                  | YES\n * ===========================================================================================================\n *\n * @param name the name of the attribute to find\n * @param attrs the attribute array to examine\n * @param isInlineTemplate true if the node being matched is an inline template (e.g. `*ngFor`)\n * rather than a manually expanded template node (e.g `<ng-template>`).\n * @param isProjectionMode true if we are matching against content projection otherwise we are\n * matching against directives.\n */\n\n\nfunction findAttrIndexInNode(name, attrs, isInlineTemplate, isProjectionMode) {\n  if (attrs === null) return -1;\n  var i = 0;\n\n  if (isProjectionMode || !isInlineTemplate) {\n    var bindingsMode = false;\n\n    while (i < attrs.length) {\n      var maybeAttrName = attrs[i];\n\n      if (maybeAttrName === name) {\n        return i;\n      } else if (maybeAttrName === 3\n      /* Bindings */\n      || maybeAttrName === 6\n      /* I18n */\n      ) {\n        bindingsMode = true;\n      } else if (maybeAttrName === 1\n      /* Classes */\n      || maybeAttrName === 2\n      /* Styles */\n      ) {\n        var value = attrs[++i]; // We should skip classes here because we have a separate mechanism for\n        // matching classes in projection mode.\n\n        while (typeof value === 'string') {\n          value = attrs[++i];\n        }\n\n        continue;\n      } else if (maybeAttrName === 4\n      /* Template */\n      ) {\n        // We do not care about Template attributes in this scenario.\n        break;\n      } else if (maybeAttrName === 0\n      /* NamespaceURI */\n      ) {\n        // Skip the whole namespaced attribute and value. This is by design.\n        i += 4;\n        continue;\n      } // In binding mode there are only names, rather than name-value pairs.\n\n\n      i += bindingsMode ? 1 : 2;\n    } // We did not match the attribute\n\n\n    return -1;\n  } else {\n    return matchTemplateAttribute(attrs, name);\n  }\n}\n\nfunction isNodeMatchingSelectorList(tNode, selector) {\n  var isProjectionMode = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n\n  for (var i = 0; i < selector.length; i++) {\n    if (isNodeMatchingSelector(tNode, selector[i], isProjectionMode)) {\n      return true;\n    }\n  }\n\n  return false;\n}\n\nfunction getProjectAsAttrValue(tNode) {\n  var nodeAttrs = tNode.attrs;\n\n  if (nodeAttrs != null) {\n    var ngProjectAsAttrIdx = nodeAttrs.indexOf(5\n    /* ProjectAs */\n    ); // only check for ngProjectAs in attribute names, don't accidentally match attribute's value\n    // (attribute names are stored at even indexes)\n\n    if ((ngProjectAsAttrIdx & 1) === 0) {\n      return nodeAttrs[ngProjectAsAttrIdx + 1];\n    }\n  }\n\n  return null;\n}\n\nfunction getNameOnlyMarkerIndex(nodeAttrs) {\n  for (var i = 0; i < nodeAttrs.length; i++) {\n    var nodeAttr = nodeAttrs[i];\n\n    if (isNameOnlyAttributeMarker(nodeAttr)) {\n      return i;\n    }\n  }\n\n  return nodeAttrs.length;\n}\n\nfunction matchTemplateAttribute(attrs, name) {\n  var i = attrs.indexOf(4\n  /* Template */\n  );\n\n  if (i > -1) {\n    i++;\n\n    while (i < attrs.length) {\n      var attr = attrs[i]; // Return in case we checked all template attrs and are switching to the next section in the\n      // attrs array (that starts with a number that represents an attribute marker).\n\n      if (typeof attr === 'number') return -1;\n      if (attr === name) return i;\n      i++;\n    }\n  }\n\n  return -1;\n}\n/**\n * Checks whether a selector is inside a CssSelectorList\n * @param selector Selector to be checked.\n * @param list List in which to look for the selector.\n */\n\n\nfunction isSelectorInSelectorList(selector, list) {\n  selectorListLoop: for (var i = 0; i < list.length; i++) {\n    var currentSelectorInList = list[i];\n\n    if (selector.length !== currentSelectorInList.length) {\n      continue;\n    }\n\n    for (var j = 0; j < selector.length; j++) {\n      if (selector[j] !== currentSelectorInList[j]) {\n        continue selectorListLoop;\n      }\n    }\n\n    return true;\n  }\n\n  return false;\n}\n\nfunction maybeWrapInNotSelector(isNegativeMode, chunk) {\n  return isNegativeMode ? ':not(' + chunk.trim() + ')' : chunk;\n}\n\nfunction stringifyCSSSelector(selector) {\n  var result = selector[0];\n  var i = 1;\n  var mode = 2\n  /* ATTRIBUTE */\n  ;\n  var currentChunk = '';\n  var isNegativeMode = false;\n\n  while (i < selector.length) {\n    var valueOrMarker = selector[i];\n\n    if (typeof valueOrMarker === 'string') {\n      if (mode & 2\n      /* ATTRIBUTE */\n      ) {\n        var attrValue = selector[++i];\n        currentChunk += '[' + valueOrMarker + (attrValue.length > 0 ? '=\"' + attrValue + '\"' : '') + ']';\n      } else if (mode & 8\n      /* CLASS */\n      ) {\n        currentChunk += '.' + valueOrMarker;\n      } else if (mode & 4\n      /* ELEMENT */\n      ) {\n        currentChunk += ' ' + valueOrMarker;\n      }\n    } else {\n      //\n      // Append current chunk to the final result in case we come across SelectorFlag, which\n      // indicates that the previous section of a selector is over. We need to accumulate content\n      // between flags to make sure we wrap the chunk later in :not() selector if needed, e.g.\n      // ```\n      //  ['', Flags.CLASS, '.classA', Flags.CLASS | Flags.NOT, '.classB', '.classC']\n      // ```\n      // should be transformed to `.classA :not(.classB .classC)`.\n      //\n      // Note: for negative selector part, we accumulate content between flags until we find the\n      // next negative flag. This is needed to support a case where `:not()` rule contains more than\n      // one chunk, e.g. the following selector:\n      // ```\n      //  ['', Flags.ELEMENT | Flags.NOT, 'p', Flags.CLASS, 'foo', Flags.CLASS | Flags.NOT, 'bar']\n      // ```\n      // should be stringified to `:not(p.foo) :not(.bar)`\n      //\n      if (currentChunk !== '' && !isPositive(valueOrMarker)) {\n        result += maybeWrapInNotSelector(isNegativeMode, currentChunk);\n        currentChunk = '';\n      }\n\n      mode = valueOrMarker; // According to CssSelector spec, once we come across `SelectorFlags.NOT` flag, the negative\n      // mode is maintained for remaining chunks of a selector.\n\n      isNegativeMode = isNegativeMode || !isPositive(mode);\n    }\n\n    i++;\n  }\n\n  if (currentChunk !== '') {\n    result += maybeWrapInNotSelector(isNegativeMode, currentChunk);\n  }\n\n  return result;\n}\n/**\n * Generates string representation of CSS selector in parsed form.\n *\n * ComponentDef and DirectiveDef are generated with the selector in parsed form to avoid doing\n * additional parsing at runtime (for example, for directive matching). However in some cases (for\n * example, while bootstrapping a component), a string version of the selector is required to query\n * for the host element on the page. This function takes the parsed form of a selector and returns\n * its string representation.\n *\n * @param selectorList selector in parsed form\n * @returns string representation of a given selector\n */\n\n\nfunction stringifyCSSSelectorList(selectorList) {\n  return selectorList.map(stringifyCSSSelector).join(',');\n}\n/**\n * Extracts attributes and classes information from a given CSS selector.\n *\n * This function is used while creating a component dynamically. In this case, the host element\n * (that is created dynamically) should contain attributes and classes specified in component's CSS\n * selector.\n *\n * @param selector CSS selector in parsed form (in a form of array)\n * @returns object with `attrs` and `classes` fields that contain extracted information\n */\n\n\nfunction extractAttrsAndClassesFromSelector(selector) {\n  var attrs = [];\n  var classes = [];\n  var i = 1;\n  var mode = 2\n  /* ATTRIBUTE */\n  ;\n\n  while (i < selector.length) {\n    var valueOrMarker = selector[i];\n\n    if (typeof valueOrMarker === 'string') {\n      if (mode === 2\n      /* ATTRIBUTE */\n      ) {\n        if (valueOrMarker !== '') {\n          attrs.push(valueOrMarker, selector[++i]);\n        }\n      } else if (mode === 8\n      /* CLASS */\n      ) {\n        classes.push(valueOrMarker);\n      }\n    } else {\n      // According to CssSelector spec, once we come across `SelectorFlags.NOT` flag, the negative\n      // mode is maintained for remaining chunks of a selector. Since attributes and classes are\n      // extracted only for \"positive\" part of the selector, we can stop here.\n      if (!isPositive(mode)) break;\n      mode = valueOrMarker;\n    }\n\n    i++;\n  }\n\n  return {\n    attrs: attrs,\n    classes: classes\n  };\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/** A special value which designates that a value has not changed. */\n\n\nvar NO_CHANGE = typeof ngDevMode === 'undefined' || ngDevMode ? {\n  __brand__: 'NO_CHANGE'\n} : {};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Advances to an element for later binding instructions.\n *\n * Used in conjunction with instructions like {@link property} to act on elements with specified\n * indices, for example those created with {@link element} or {@link elementStart}.\n *\n * ```ts\n * (rf: RenderFlags, ctx: any) => {\n *   if (rf & 1) {\n *     text(0, 'Hello');\n *     text(1, 'Goodbye')\n *     element(2, 'div');\n *   }\n *   if (rf & 2) {\n *     advance(2); // Advance twice to the <div>.\n *     property('title', 'test');\n *   }\n *  }\n * ```\n * @param delta Number of elements to advance forwards by.\n *\n * @codeGenApi\n */\n\nfunction ɵɵadvance(delta) {\n  ngDevMode && assertGreaterThan(delta, 0, 'Can only advance forward');\n  selectIndexInternal(getTView(), getLView(), getSelectedIndex() + delta, isInCheckNoChangesMode());\n}\n\nfunction selectIndexInternal(tView, lView, index, checkNoChangesMode) {\n  ngDevMode && assertIndexInDeclRange(lView, index); // Flush the initial hooks for elements in the view that have been added up to this point.\n  // PERF WARNING: do NOT extract this to a separate function without running benchmarks\n\n  if (!checkNoChangesMode) {\n    var hooksInitPhaseCompleted = (lView[FLAGS] & 3\n    /* InitPhaseStateMask */\n    ) === 3\n    /* InitPhaseCompleted */\n    ;\n\n    if (hooksInitPhaseCompleted) {\n      var preOrderCheckHooks = tView.preOrderCheckHooks;\n\n      if (preOrderCheckHooks !== null) {\n        executeCheckHooks(lView, preOrderCheckHooks, index);\n      }\n    } else {\n      var preOrderHooks = tView.preOrderHooks;\n\n      if (preOrderHooks !== null) {\n        executeInitAndCheckHooks(lView, preOrderHooks, 0\n        /* OnInitHooksToBeRun */\n        , index);\n      }\n    }\n  } // We must set the selected index *after* running the hooks, because hooks may have side-effects\n  // that cause other template functions to run, thus updating the selected index, which is global\n  // state. If we run `setSelectedIndex` *before* we run the hooks, in some cases the selected index\n  // will be altered by the time we leave the `ɵɵadvance` instruction.\n\n\n  setSelectedIndex(index);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction toTStylingRange(prev, next) {\n  ngDevMode && assertNumberInRange(prev, 0, 32767\n  /* UNSIGNED_MASK */\n  );\n  ngDevMode && assertNumberInRange(next, 0, 32767\n  /* UNSIGNED_MASK */\n  );\n  return prev << 17\n  /* PREV_SHIFT */\n  | next << 2\n  /* NEXT_SHIFT */\n  ;\n}\n\nfunction getTStylingRangePrev(tStylingRange) {\n  ngDevMode && assertNumber(tStylingRange, 'expected number');\n  return tStylingRange >> 17\n  /* PREV_SHIFT */\n  & 32767\n  /* UNSIGNED_MASK */\n  ;\n}\n\nfunction getTStylingRangePrevDuplicate(tStylingRange) {\n  ngDevMode && assertNumber(tStylingRange, 'expected number');\n  return (tStylingRange & 2\n  /* PREV_DUPLICATE */\n  ) == 2\n  /* PREV_DUPLICATE */\n  ;\n}\n\nfunction setTStylingRangePrev(tStylingRange, previous) {\n  ngDevMode && assertNumber(tStylingRange, 'expected number');\n  ngDevMode && assertNumberInRange(previous, 0, 32767\n  /* UNSIGNED_MASK */\n  );\n  return tStylingRange & ~4294836224\n  /* PREV_MASK */\n  | previous << 17\n  /* PREV_SHIFT */\n  ;\n}\n\nfunction setTStylingRangePrevDuplicate(tStylingRange) {\n  ngDevMode && assertNumber(tStylingRange, 'expected number');\n  return tStylingRange | 2\n  /* PREV_DUPLICATE */\n  ;\n}\n\nfunction getTStylingRangeNext(tStylingRange) {\n  ngDevMode && assertNumber(tStylingRange, 'expected number');\n  return (tStylingRange & 131068\n  /* NEXT_MASK */\n  ) >> 2\n  /* NEXT_SHIFT */\n  ;\n}\n\nfunction setTStylingRangeNext(tStylingRange, next) {\n  ngDevMode && assertNumber(tStylingRange, 'expected number');\n  ngDevMode && assertNumberInRange(next, 0, 32767\n  /* UNSIGNED_MASK */\n  );\n  return tStylingRange & ~131068\n  /* NEXT_MASK */\n  | //\n  next << 2\n  /* NEXT_SHIFT */\n  ;\n}\n\nfunction getTStylingRangeNextDuplicate(tStylingRange) {\n  ngDevMode && assertNumber(tStylingRange, 'expected number');\n  return (tStylingRange & 1\n  /* NEXT_DUPLICATE */\n  ) === 1\n  /* NEXT_DUPLICATE */\n  ;\n}\n\nfunction setTStylingRangeNextDuplicate(tStylingRange) {\n  ngDevMode && assertNumber(tStylingRange, 'expected number');\n  return tStylingRange | 1\n  /* NEXT_DUPLICATE */\n  ;\n}\n\nfunction getTStylingRangeTail(tStylingRange) {\n  ngDevMode && assertNumber(tStylingRange, 'expected number');\n  var next = getTStylingRangeNext(tStylingRange);\n  return next === 0 ? getTStylingRangePrev(tStylingRange) : next;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Patch a `debug` property on top of the existing object.\n *\n * NOTE: always call this method with `ngDevMode && attachDebugObject(...)`\n *\n * @param obj Object to patch\n * @param debug Value to patch\n */\n\n\nfunction attachDebugObject(obj, debug) {\n  if (ngDevMode) {\n    Object.defineProperty(obj, 'debug', {\n      value: debug,\n      enumerable: false\n    });\n  } else {\n    throw new Error('This method should be guarded with `ngDevMode` so that it can be tree shaken in production!');\n  }\n}\n/**\n * Patch a `debug` property getter on top of the existing object.\n *\n * NOTE: always call this method with `ngDevMode && attachDebugObject(...)`\n *\n * @param obj Object to patch\n * @param debugGetter Getter returning a value to patch\n */\n\n\nfunction attachDebugGetter(obj, debugGetter) {\n  if (ngDevMode) {\n    Object.defineProperty(obj, 'debug', {\n      get: debugGetter,\n      enumerable: false\n    });\n  } else {\n    throw new Error('This method should be guarded with `ngDevMode` so that it can be tree shaken in production!');\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar NG_DEV_MODE = (typeof ngDevMode === 'undefined' || !!ngDevMode) && initNgDevMode();\n/*\n * This file contains conditionally attached classes which provide human readable (debug) level\n * information for `LView`, `LContainer` and other internal data structures. These data structures\n * are stored internally as array which makes it very difficult during debugging to reason about the\n * current state of the system.\n *\n * Patching the array with extra property does change the array's hidden class' but it does not\n * change the cost of access, therefore this patching should not have significant if any impact in\n * `ngDevMode` mode. (see: https://jsperf.com/array-vs-monkey-patch-array)\n *\n * So instead of seeing:\n * ```\n * Array(30) [Object, 659, null, …]\n * ```\n *\n * You get to see:\n * ```\n * LViewDebug {\n *   views: [...],\n *   flags: {attached: true, ...}\n *   nodes: [\n *     {html: '<div id=\"123\">', ..., nodes: [\n *       {html: '<span>', ..., nodes: null}\n *     ]}\n *   ]\n * }\n * ```\n */\n\nvar LVIEW_COMPONENT_CACHE;\nvar LVIEW_EMBEDDED_CACHE;\nvar LVIEW_ROOT;\n/**\n * This function clones a blueprint and creates LView.\n *\n * Simple slice will keep the same type, and we need it to be LView\n */\n\nfunction cloneToLViewFromTViewBlueprint(tView) {\n  var debugTView = tView;\n  var lView = getLViewToClone(debugTView.type, tView.template && tView.template.name);\n  return lView.concat(tView.blueprint);\n}\n\nfunction getLViewToClone(type, name) {\n  switch (type) {\n    case 0\n    /* Root */\n    :\n      if (LVIEW_ROOT === undefined) LVIEW_ROOT = new (createNamedArrayType('LRootView'))();\n      return LVIEW_ROOT;\n\n    case 1\n    /* Component */\n    :\n      if (LVIEW_COMPONENT_CACHE === undefined) LVIEW_COMPONENT_CACHE = new Map();\n      var componentArray = LVIEW_COMPONENT_CACHE.get(name);\n\n      if (componentArray === undefined) {\n        componentArray = new (createNamedArrayType('LComponentView' + nameSuffix(name)))();\n        LVIEW_COMPONENT_CACHE.set(name, componentArray);\n      }\n\n      return componentArray;\n\n    case 2\n    /* Embedded */\n    :\n      if (LVIEW_EMBEDDED_CACHE === undefined) LVIEW_EMBEDDED_CACHE = new Map();\n      var embeddedArray = LVIEW_EMBEDDED_CACHE.get(name);\n\n      if (embeddedArray === undefined) {\n        embeddedArray = new (createNamedArrayType('LEmbeddedView' + nameSuffix(name)))();\n        LVIEW_EMBEDDED_CACHE.set(name, embeddedArray);\n      }\n\n      return embeddedArray;\n  }\n\n  throw new Error('unreachable code');\n}\n\nfunction nameSuffix(text) {\n  if (text == null) return '';\n  var index = text.lastIndexOf('_Template');\n  return '_' + (index === -1 ? text : text.substr(0, index));\n}\n/**\n * This class is a debug version of Object literal so that we can have constructor name show up\n * in\n * debug tools in ngDevMode.\n */\n\n\nvar TViewConstructor = /*#__PURE__*/function () {\n  function TView(type, blueprint, template, queries, viewQuery, declTNode, data, bindingStartIndex, expandoStartIndex, hostBindingOpCodes, firstCreatePass, firstUpdatePass, staticViewQueries, staticContentQueries, preOrderHooks, preOrderCheckHooks, contentHooks, contentCheckHooks, viewHooks, viewCheckHooks, destroyHooks, cleanup, contentQueries, components, directiveRegistry, pipeRegistry, firstChild, schemas, consts, incompleteFirstPass, _decls, _vars) {\n    _classCallCheck(this, TView);\n\n    this.type = type;\n    this.blueprint = blueprint;\n    this.template = template;\n    this.queries = queries;\n    this.viewQuery = viewQuery;\n    this.declTNode = declTNode;\n    this.data = data;\n    this.bindingStartIndex = bindingStartIndex;\n    this.expandoStartIndex = expandoStartIndex;\n    this.hostBindingOpCodes = hostBindingOpCodes;\n    this.firstCreatePass = firstCreatePass;\n    this.firstUpdatePass = firstUpdatePass;\n    this.staticViewQueries = staticViewQueries;\n    this.staticContentQueries = staticContentQueries;\n    this.preOrderHooks = preOrderHooks;\n    this.preOrderCheckHooks = preOrderCheckHooks;\n    this.contentHooks = contentHooks;\n    this.contentCheckHooks = contentCheckHooks;\n    this.viewHooks = viewHooks;\n    this.viewCheckHooks = viewCheckHooks;\n    this.destroyHooks = destroyHooks;\n    this.cleanup = cleanup;\n    this.contentQueries = contentQueries;\n    this.components = components;\n    this.directiveRegistry = directiveRegistry;\n    this.pipeRegistry = pipeRegistry;\n    this.firstChild = firstChild;\n    this.schemas = schemas;\n    this.consts = consts;\n    this.incompleteFirstPass = incompleteFirstPass;\n    this._decls = _decls;\n    this._vars = _vars;\n  }\n\n  _createClass2(TView, [{\n    key: \"template_\",\n    get: function get() {\n      var buf = [];\n      processTNodeChildren(this.firstChild, buf);\n      return buf.join('');\n    }\n  }, {\n    key: \"type_\",\n    get: function get() {\n      return TViewTypeAsString[this.type] || \"TViewType.?\".concat(this.type, \"?\");\n    }\n  }]);\n\n  return TView;\n}();\n\nvar TNode = /*#__PURE__*/function () {\n  function TNode(tView_, //\n  type, //\n  index, //\n  insertBeforeIndex, //\n  injectorIndex, //\n  directiveStart, //\n  directiveEnd, //\n  directiveStylingLast, //\n  propertyBindings, //\n  flags, //\n  providerIndexes, //\n  value, //\n  attrs, //\n  mergedAttrs, //\n  localNames, //\n  initialInputs, //\n  inputs, //\n  outputs, //\n  tViews, //\n  next, //\n  projectionNext, //\n  child, //\n  parent, //\n  projection, //\n  styles, //\n  stylesWithoutHost, //\n  residualStyles, //\n  classes, //\n  classesWithoutHost, //\n  residualClasses, //\n  classBindings, //\n  styleBindings) {\n    _classCallCheck(this, TNode);\n\n    this.tView_ = tView_;\n    this.type = type;\n    this.index = index;\n    this.insertBeforeIndex = insertBeforeIndex;\n    this.injectorIndex = injectorIndex;\n    this.directiveStart = directiveStart;\n    this.directiveEnd = directiveEnd;\n    this.directiveStylingLast = directiveStylingLast;\n    this.propertyBindings = propertyBindings;\n    this.flags = flags;\n    this.providerIndexes = providerIndexes;\n    this.value = value;\n    this.attrs = attrs;\n    this.mergedAttrs = mergedAttrs;\n    this.localNames = localNames;\n    this.initialInputs = initialInputs;\n    this.inputs = inputs;\n    this.outputs = outputs;\n    this.tViews = tViews;\n    this.next = next;\n    this.projectionNext = projectionNext;\n    this.child = child;\n    this.parent = parent;\n    this.projection = projection;\n    this.styles = styles;\n    this.stylesWithoutHost = stylesWithoutHost;\n    this.residualStyles = residualStyles;\n    this.classes = classes;\n    this.classesWithoutHost = classesWithoutHost;\n    this.residualClasses = residualClasses;\n    this.classBindings = classBindings;\n    this.styleBindings = styleBindings;\n  }\n  /**\n   * Return a human debug version of the set of `NodeInjector`s which will be consulted when\n   * resolving tokens from this `TNode`.\n   *\n   * When debugging applications, it is often difficult to determine which `NodeInjector`s will be\n   * consulted. This method shows a list of `DebugNode`s representing the `TNode`s which will be\n   * consulted in order when resolving a token starting at this `TNode`.\n   *\n   * The original data is stored in `LView` and `TView` with a lot of offset indexes, and so it is\n   * difficult to reason about.\n   *\n   * @param lView The `LView` instance for this `TNode`.\n   */\n\n\n  _createClass2(TNode, [{\n    key: \"debugNodeInjectorPath\",\n    value: function debugNodeInjectorPath(lView) {\n      var path = [];\n      var injectorIndex = getInjectorIndex(this, lView);\n      ngDevMode && assertNodeInjector(lView, injectorIndex);\n\n      while (injectorIndex !== -1) {\n        var tNode = lView[TVIEW].data[injectorIndex + 8\n        /* TNODE */\n        ];\n        path.push(buildDebugNode(tNode, lView));\n        var parentLocation = lView[injectorIndex + 8\n        /* PARENT */\n        ];\n\n        if (parentLocation === NO_PARENT_INJECTOR) {\n          injectorIndex = -1;\n        } else {\n          injectorIndex = getParentInjectorIndex(parentLocation);\n          lView = getParentInjectorView(parentLocation, lView);\n        }\n      }\n\n      return path;\n    }\n  }, {\n    key: \"type_\",\n    get: function get() {\n      return toTNodeTypeAsString(this.type) || \"TNodeType.?\".concat(this.type, \"?\");\n    }\n  }, {\n    key: \"flags_\",\n    get: function get() {\n      var flags = [];\n      if (this.flags & 16\n      /* hasClassInput */\n      ) flags.push('TNodeFlags.hasClassInput');\n      if (this.flags & 8\n      /* hasContentQuery */\n      ) flags.push('TNodeFlags.hasContentQuery');\n      if (this.flags & 32\n      /* hasStyleInput */\n      ) flags.push('TNodeFlags.hasStyleInput');\n      if (this.flags & 128\n      /* hasHostBindings */\n      ) flags.push('TNodeFlags.hasHostBindings');\n      if (this.flags & 2\n      /* isComponentHost */\n      ) flags.push('TNodeFlags.isComponentHost');\n      if (this.flags & 1\n      /* isDirectiveHost */\n      ) flags.push('TNodeFlags.isDirectiveHost');\n      if (this.flags & 64\n      /* isDetached */\n      ) flags.push('TNodeFlags.isDetached');\n      if (this.flags & 4\n      /* isProjected */\n      ) flags.push('TNodeFlags.isProjected');\n      return flags.join('|');\n    }\n  }, {\n    key: \"template_\",\n    get: function get() {\n      if (this.type & 1\n      /* Text */\n      ) return this.value;\n      var buf = [];\n      var tagName = typeof this.value === 'string' && this.value || this.type_;\n      buf.push('<', tagName);\n\n      if (this.flags) {\n        buf.push(' ', this.flags_);\n      }\n\n      if (this.attrs) {\n        for (var i = 0; i < this.attrs.length;) {\n          var attrName = this.attrs[i++];\n\n          if (typeof attrName == 'number') {\n            break;\n          }\n\n          var attrValue = this.attrs[i++];\n          buf.push(' ', attrName, '=\"', attrValue, '\"');\n        }\n      }\n\n      buf.push('>');\n      processTNodeChildren(this.child, buf);\n      buf.push('</', tagName, '>');\n      return buf.join('');\n    }\n  }, {\n    key: \"styleBindings_\",\n    get: function get() {\n      return toDebugStyleBinding(this, false);\n    }\n  }, {\n    key: \"classBindings_\",\n    get: function get() {\n      return toDebugStyleBinding(this, true);\n    }\n  }, {\n    key: \"providerIndexStart_\",\n    get: function get() {\n      return this.providerIndexes & 1048575\n      /* ProvidersStartIndexMask */\n      ;\n    }\n  }, {\n    key: \"providerIndexEnd_\",\n    get: function get() {\n      return this.providerIndexStart_ + (this.providerIndexes >>> 20\n      /* CptViewProvidersCountShift */\n      );\n    }\n  }]);\n\n  return TNode;\n}();\n\nvar TNodeDebug = TNode;\n\nfunction toDebugStyleBinding(tNode, isClassBased) {\n  var tData = tNode.tView_.data;\n  var bindings = [];\n  var range = isClassBased ? tNode.classBindings : tNode.styleBindings;\n  var prev = getTStylingRangePrev(range);\n  var next = getTStylingRangeNext(range);\n  var isTemplate = next !== 0;\n  var cursor = isTemplate ? next : prev;\n\n  while (cursor !== 0) {\n    var itemKey = tData[cursor];\n    var itemRange = tData[cursor + 1];\n    bindings.unshift({\n      key: itemKey,\n      index: cursor,\n      isTemplate: isTemplate,\n      prevDuplicate: getTStylingRangePrevDuplicate(itemRange),\n      nextDuplicate: getTStylingRangeNextDuplicate(itemRange),\n      nextIndex: getTStylingRangeNext(itemRange),\n      prevIndex: getTStylingRangePrev(itemRange)\n    });\n    if (cursor === prev) isTemplate = false;\n    cursor = getTStylingRangePrev(itemRange);\n  }\n\n  bindings.push((isClassBased ? tNode.residualClasses : tNode.residualStyles) || null);\n  return bindings;\n}\n\nfunction processTNodeChildren(tNode, buf) {\n  while (tNode) {\n    buf.push(tNode.template_);\n    tNode = tNode.next;\n  }\n}\n\nvar TViewData = NG_DEV_MODE && createNamedArrayType('TViewData') || null;\nvar TVIEWDATA_EMPTY; // can't initialize here or it will not be tree shaken, because\n// `LView` constructor could have side-effects.\n\n/**\n * This function clones a blueprint and creates TData.\n *\n * Simple slice will keep the same type, and we need it to be TData\n */\n\nfunction cloneToTViewData(list) {\n  if (TVIEWDATA_EMPTY === undefined) TVIEWDATA_EMPTY = new TViewData();\n  return TVIEWDATA_EMPTY.concat(list);\n}\n\nvar LViewBlueprint = NG_DEV_MODE && createNamedArrayType('LViewBlueprint') || null;\nvar MatchesArray = NG_DEV_MODE && createNamedArrayType('MatchesArray') || null;\nvar TViewComponents = NG_DEV_MODE && createNamedArrayType('TViewComponents') || null;\nvar TNodeLocalNames = NG_DEV_MODE && createNamedArrayType('TNodeLocalNames') || null;\nvar TNodeInitialInputs = NG_DEV_MODE && createNamedArrayType('TNodeInitialInputs') || null;\nvar TNodeInitialData = NG_DEV_MODE && createNamedArrayType('TNodeInitialData') || null;\nvar LCleanup = NG_DEV_MODE && createNamedArrayType('LCleanup') || null;\nvar TCleanup = NG_DEV_MODE && createNamedArrayType('TCleanup') || null;\n\nfunction attachLViewDebug(lView) {\n  attachDebugObject(lView, new LViewDebug(lView));\n}\n\nfunction attachLContainerDebug(lContainer) {\n  attachDebugObject(lContainer, new LContainerDebug(lContainer));\n}\n\nfunction toDebug(obj) {\n  if (obj) {\n    var debug = obj.debug;\n    assertDefined(debug, 'Object does not have a debug representation.');\n    return debug;\n  } else {\n    return obj;\n  }\n}\n/**\n * Use this method to unwrap a native element in `LView` and convert it into HTML for easier\n * reading.\n *\n * @param value possibly wrapped native DOM node.\n * @param includeChildren If `true` then the serialized HTML form will include child elements\n * (same\n * as `outerHTML`). If `false` then the serialized HTML form will only contain the element\n * itself\n * (will not serialize child elements).\n */\n\n\nfunction toHtml(value) {\n  var includeChildren = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n  var node = unwrapRNode(value);\n\n  if (node) {\n    switch (node.nodeType) {\n      case Node.TEXT_NODE:\n        return node.textContent;\n\n      case Node.COMMENT_NODE:\n        return \"<!--\".concat(node.textContent, \"-->\");\n\n      case Node.ELEMENT_NODE:\n        var outerHTML = node.outerHTML;\n\n        if (includeChildren) {\n          return outerHTML;\n        } else {\n          var innerHTML = '>' + node.innerHTML + '<';\n          return outerHTML.split(innerHTML)[0] + '>';\n        }\n\n    }\n  }\n\n  return null;\n}\n\nvar LViewDebug = /*#__PURE__*/function () {\n  function LViewDebug(_raw_lView) {\n    _classCallCheck(this, LViewDebug);\n\n    this._raw_lView = _raw_lView;\n  }\n  /**\n   * Flags associated with the `LView` unpacked into a more readable state.\n   */\n\n\n  _createClass2(LViewDebug, [{\n    key: \"flags\",\n    get: function get() {\n      var flags = this._raw_lView[FLAGS];\n      return {\n        __raw__flags__: flags,\n        initPhaseState: flags & 3\n        /* InitPhaseStateMask */\n        ,\n        creationMode: !!(flags & 4\n        /* CreationMode */\n        ),\n        firstViewPass: !!(flags & 8\n        /* FirstLViewPass */\n        ),\n        checkAlways: !!(flags & 16\n        /* CheckAlways */\n        ),\n        dirty: !!(flags & 64\n        /* Dirty */\n        ),\n        attached: !!(flags & 128\n        /* Attached */\n        ),\n        destroyed: !!(flags & 256\n        /* Destroyed */\n        ),\n        isRoot: !!(flags & 512\n        /* IsRoot */\n        ),\n        indexWithinInitPhase: flags >> 11\n        /* IndexWithinInitPhaseShift */\n\n      };\n    }\n  }, {\n    key: \"parent\",\n    get: function get() {\n      return toDebug(this._raw_lView[PARENT]);\n    }\n  }, {\n    key: \"hostHTML\",\n    get: function get() {\n      return toHtml(this._raw_lView[HOST], true);\n    }\n  }, {\n    key: \"html\",\n    get: function get() {\n      return (this.nodes || []).map(mapToHTML).join('');\n    }\n  }, {\n    key: \"context\",\n    get: function get() {\n      return this._raw_lView[CONTEXT];\n    }\n    /**\n     * The tree of nodes associated with the current `LView`. The nodes have been normalized into\n     * a tree structure with relevant details pulled out for readability.\n     */\n\n  }, {\n    key: \"nodes\",\n    get: function get() {\n      var lView = this._raw_lView;\n      var tNode = lView[TVIEW].firstChild;\n      return toDebugNodes(tNode, lView);\n    }\n  }, {\n    key: \"template\",\n    get: function get() {\n      return this.tView.template_;\n    }\n  }, {\n    key: \"tView\",\n    get: function get() {\n      return this._raw_lView[TVIEW];\n    }\n  }, {\n    key: \"cleanup\",\n    get: function get() {\n      return this._raw_lView[CLEANUP];\n    }\n  }, {\n    key: \"injector\",\n    get: function get() {\n      return this._raw_lView[INJECTOR];\n    }\n  }, {\n    key: \"rendererFactory\",\n    get: function get() {\n      return this._raw_lView[RENDERER_FACTORY];\n    }\n  }, {\n    key: \"renderer\",\n    get: function get() {\n      return this._raw_lView[RENDERER];\n    }\n  }, {\n    key: \"sanitizer\",\n    get: function get() {\n      return this._raw_lView[SANITIZER];\n    }\n  }, {\n    key: \"childHead\",\n    get: function get() {\n      return toDebug(this._raw_lView[CHILD_HEAD]);\n    }\n  }, {\n    key: \"next\",\n    get: function get() {\n      return toDebug(this._raw_lView[NEXT]);\n    }\n  }, {\n    key: \"childTail\",\n    get: function get() {\n      return toDebug(this._raw_lView[CHILD_TAIL]);\n    }\n  }, {\n    key: \"declarationView\",\n    get: function get() {\n      return toDebug(this._raw_lView[DECLARATION_VIEW]);\n    }\n  }, {\n    key: \"queries\",\n    get: function get() {\n      return this._raw_lView[QUERIES];\n    }\n  }, {\n    key: \"tHost\",\n    get: function get() {\n      return this._raw_lView[T_HOST];\n    }\n  }, {\n    key: \"decls\",\n    get: function get() {\n      return toLViewRange(this.tView, this._raw_lView, HEADER_OFFSET, this.tView.bindingStartIndex);\n    }\n  }, {\n    key: \"vars\",\n    get: function get() {\n      return toLViewRange(this.tView, this._raw_lView, this.tView.bindingStartIndex, this.tView.expandoStartIndex);\n    }\n  }, {\n    key: \"expando\",\n    get: function get() {\n      return toLViewRange(this.tView, this._raw_lView, this.tView.expandoStartIndex, this._raw_lView.length);\n    }\n    /**\n     * Normalized view of child views (and containers) attached at this location.\n     */\n\n  }, {\n    key: \"childViews\",\n    get: function get() {\n      var childViews = [];\n      var child = this.childHead;\n\n      while (child) {\n        childViews.push(child);\n        child = child.next;\n      }\n\n      return childViews;\n    }\n  }]);\n\n  return LViewDebug;\n}();\n\nfunction mapToHTML(node) {\n  if (node.type === 'ElementContainer') {\n    return (node.children || []).map(mapToHTML).join('');\n  } else if (node.type === 'IcuContainer') {\n    throw new Error('Not implemented');\n  } else {\n    return toHtml(node.native, true) || '';\n  }\n}\n\nfunction toLViewRange(tView, lView, start, end) {\n  var content = [];\n\n  for (var index = start; index < end; index++) {\n    content.push({\n      index: index,\n      t: tView.data[index],\n      l: lView[index]\n    });\n  }\n\n  return {\n    start: start,\n    end: end,\n    length: end - start,\n    content: content\n  };\n}\n/**\n * Turns a flat list of nodes into a tree by walking the associated `TNode` tree.\n *\n * @param tNode\n * @param lView\n */\n\n\nfunction toDebugNodes(tNode, lView) {\n  if (tNode) {\n    var debugNodes = [];\n    var tNodeCursor = tNode;\n\n    while (tNodeCursor) {\n      debugNodes.push(buildDebugNode(tNodeCursor, lView));\n      tNodeCursor = tNodeCursor.next;\n    }\n\n    return debugNodes;\n  } else {\n    return [];\n  }\n}\n\nfunction buildDebugNode(tNode, lView) {\n  var rawValue = lView[tNode.index];\n  var native = unwrapRNode(rawValue);\n  var factories = [];\n  var instances = [];\n  var tView = lView[TVIEW];\n\n  for (var i = tNode.directiveStart; i < tNode.directiveEnd; i++) {\n    var def = tView.data[i];\n    factories.push(def.type);\n    instances.push(lView[i]);\n  }\n\n  return {\n    html: toHtml(native),\n    type: toTNodeTypeAsString(tNode.type),\n    native: native,\n    children: toDebugNodes(tNode.child, lView),\n    factories: factories,\n    instances: instances,\n    injector: buildNodeInjectorDebug(tNode, tView, lView)\n  };\n}\n\nfunction buildNodeInjectorDebug(tNode, tView, lView) {\n  var viewProviders = [];\n\n  for (var i = tNode.providerIndexStart_; i < tNode.providerIndexEnd_; i++) {\n    viewProviders.push(tView.data[i]);\n  }\n\n  var providers = [];\n\n  for (var _i2 = tNode.providerIndexEnd_; _i2 < tNode.directiveEnd; _i2++) {\n    providers.push(tView.data[_i2]);\n  }\n\n  var nodeInjectorDebug = {\n    bloom: toBloom(lView, tNode.injectorIndex),\n    cumulativeBloom: toBloom(tView.data, tNode.injectorIndex),\n    providers: providers,\n    viewProviders: viewProviders,\n    parentInjectorIndex: lView[tNode.providerIndexStart_ - 1]\n  };\n  return nodeInjectorDebug;\n}\n/**\n * Convert a number at `idx` location in `array` into binary representation.\n *\n * @param array\n * @param idx\n */\n\n\nfunction binary(array, idx) {\n  var value = array[idx]; // If not a number we print 8 `?` to retain alignment but let user know that it was called on\n  // wrong type.\n\n  if (typeof value !== 'number') return '????????'; // We prefix 0s so that we have constant length number\n\n  var text = '00000000' + value.toString(2);\n  return text.substring(text.length - 8);\n}\n/**\n * Convert a bloom filter at location `idx` in `array` into binary representation.\n *\n * @param array\n * @param idx\n */\n\n\nfunction toBloom(array, idx) {\n  return \"\".concat(binary(array, idx + 7), \"_\").concat(binary(array, idx + 6), \"_\").concat(binary(array, idx + 5), \"_\").concat(binary(array, idx + 4), \"_\").concat(binary(array, idx + 3), \"_\").concat(binary(array, idx + 2), \"_\").concat(binary(array, idx + 1), \"_\").concat(binary(array, idx + 0));\n}\n\nvar LContainerDebug = /*#__PURE__*/function () {\n  function LContainerDebug(_raw_lContainer) {\n    _classCallCheck(this, LContainerDebug);\n\n    this._raw_lContainer = _raw_lContainer;\n  }\n\n  _createClass2(LContainerDebug, [{\n    key: \"hasTransplantedViews\",\n    get: function get() {\n      return this._raw_lContainer[HAS_TRANSPLANTED_VIEWS];\n    }\n  }, {\n    key: \"views\",\n    get: function get() {\n      return this._raw_lContainer.slice(CONTAINER_HEADER_OFFSET).map(toDebug);\n    }\n  }, {\n    key: \"parent\",\n    get: function get() {\n      return toDebug(this._raw_lContainer[PARENT]);\n    }\n  }, {\n    key: \"movedViews\",\n    get: function get() {\n      return this._raw_lContainer[MOVED_VIEWS];\n    }\n  }, {\n    key: \"host\",\n    get: function get() {\n      return this._raw_lContainer[HOST];\n    }\n  }, {\n    key: \"native\",\n    get: function get() {\n      return this._raw_lContainer[NATIVE];\n    }\n  }, {\n    key: \"next\",\n    get: function get() {\n      return toDebug(this._raw_lContainer[NEXT]);\n    }\n  }]);\n\n  return LContainerDebug;\n}();\n\nvar ɵ0$5 = function ɵ0$5() {\n  return Promise.resolve(null);\n};\n/**\n * A permanent marker promise which signifies that the current CD tree is\n * clean.\n */\n\n\nvar _CLEAN_PROMISE = ɵ0$5();\n/**\n * Invoke `HostBindingsFunction`s for view.\n *\n * This methods executes `TView.hostBindingOpCodes`. It is used to execute the\n * `HostBindingsFunction`s associated with the current `LView`.\n *\n * @param tView Current `TView`.\n * @param lView Current `LView`.\n */\n\n\nfunction processHostBindingOpCodes(tView, lView) {\n  var hostBindingOpCodes = tView.hostBindingOpCodes;\n  if (hostBindingOpCodes === null) return;\n\n  try {\n    for (var i = 0; i < hostBindingOpCodes.length; i++) {\n      var opCode = hostBindingOpCodes[i];\n\n      if (opCode < 0) {\n        // Negative numbers are element indexes.\n        setSelectedIndex(~opCode);\n      } else {\n        // Positive numbers are NumberTuple which store bindingRootIndex and directiveIndex.\n        var directiveIdx = opCode;\n        var bindingRootIndx = hostBindingOpCodes[++i];\n        var hostBindingFn = hostBindingOpCodes[++i];\n        setBindingRootForHostBindings(bindingRootIndx, directiveIdx);\n        var context = lView[directiveIdx];\n        hostBindingFn(2\n        /* Update */\n        , context);\n      }\n    }\n  } finally {\n    setSelectedIndex(-1);\n  }\n}\n/** Refreshes all content queries declared by directives in a given view */\n\n\nfunction refreshContentQueries(tView, lView) {\n  var contentQueries = tView.contentQueries;\n\n  if (contentQueries !== null) {\n    for (var i = 0; i < contentQueries.length; i += 2) {\n      var queryStartIdx = contentQueries[i];\n      var directiveDefIdx = contentQueries[i + 1];\n\n      if (directiveDefIdx !== -1) {\n        var _directiveDef2 = tView.data[directiveDefIdx];\n        ngDevMode && assertDefined(_directiveDef2, 'DirectiveDef not found.');\n        ngDevMode && assertDefined(_directiveDef2.contentQueries, 'contentQueries function should be defined');\n        setCurrentQueryIndex(queryStartIdx);\n\n        _directiveDef2.contentQueries(2\n        /* Update */\n        , lView[directiveDefIdx], directiveDefIdx);\n      }\n    }\n  }\n}\n/** Refreshes child components in the current view (update mode). */\n\n\nfunction refreshChildComponents(hostLView, components) {\n  for (var i = 0; i < components.length; i++) {\n    refreshComponent(hostLView, components[i]);\n  }\n}\n/** Renders child components in the current view (creation mode). */\n\n\nfunction renderChildComponents(hostLView, components) {\n  for (var i = 0; i < components.length; i++) {\n    renderComponent(hostLView, components[i]);\n  }\n}\n\nfunction createLView(parentLView, tView, context, flags, host, tHostNode, rendererFactory, renderer, sanitizer, injector) {\n  var lView = ngDevMode ? cloneToLViewFromTViewBlueprint(tView) : tView.blueprint.slice();\n  lView[HOST] = host;\n  lView[FLAGS] = flags | 4\n  /* CreationMode */\n  | 128\n  /* Attached */\n  | 8\n  /* FirstLViewPass */\n  ;\n  resetPreOrderHookFlags(lView);\n  ngDevMode && tView.declTNode && parentLView && assertTNodeForLView(tView.declTNode, parentLView);\n  lView[PARENT] = lView[DECLARATION_VIEW] = parentLView;\n  lView[CONTEXT] = context;\n  lView[RENDERER_FACTORY] = rendererFactory || parentLView && parentLView[RENDERER_FACTORY];\n  ngDevMode && assertDefined(lView[RENDERER_FACTORY], 'RendererFactory is required');\n  lView[RENDERER] = renderer || parentLView && parentLView[RENDERER];\n  ngDevMode && assertDefined(lView[RENDERER], 'Renderer is required');\n  lView[SANITIZER] = sanitizer || parentLView && parentLView[SANITIZER] || null;\n  lView[INJECTOR] = injector || parentLView && parentLView[INJECTOR] || null;\n  lView[T_HOST] = tHostNode;\n  ngDevMode && assertEqual(tView.type == 2\n  /* Embedded */\n  ? parentLView !== null : true, true, 'Embedded views must have parentLView');\n  lView[DECLARATION_COMPONENT_VIEW] = tView.type == 2\n  /* Embedded */\n  ? parentLView[DECLARATION_COMPONENT_VIEW] : lView;\n  ngDevMode && attachLViewDebug(lView);\n  return lView;\n}\n\nfunction getOrCreateTNode(tView, index, type, name, attrs) {\n  ngDevMode && index !== 0 && // 0 are bogus nodes and they are OK. See `createContainerRef` in\n  // `view_engine_compatibility` for additional context.\n  assertGreaterThanOrEqual(index, HEADER_OFFSET, 'TNodes can\\'t be in the LView header.'); // Keep this function short, so that the VM will inline it.\n\n  ngDevMode && assertPureTNodeType(type);\n  var tNode = tView.data[index];\n\n  if (tNode === null) {\n    tNode = createTNodeAtIndex(tView, index, type, name, attrs);\n\n    if (isInI18nBlock()) {\n      // If we are in i18n block then all elements should be pre declared through `Placeholder`\n      // See `TNodeType.Placeholder` and `LFrame.inI18n` for more context.\n      // If the `TNode` was not pre-declared than it means it was not mentioned which means it was\n      // removed, so we mark it as detached.\n      tNode.flags |= 64\n      /* isDetached */\n      ;\n    }\n  } else if (tNode.type & 64\n  /* Placeholder */\n  ) {\n    tNode.type = type;\n    tNode.value = name;\n    tNode.attrs = attrs;\n    var parent = getCurrentParentTNode();\n    tNode.injectorIndex = parent === null ? -1 : parent.injectorIndex;\n    ngDevMode && assertTNodeForTView(tNode, tView);\n    ngDevMode && assertEqual(index, tNode.index, 'Expecting same index');\n  }\n\n  setCurrentTNode(tNode, true);\n  return tNode;\n}\n\nfunction createTNodeAtIndex(tView, index, type, name, attrs) {\n  var currentTNode = getCurrentTNodePlaceholderOk();\n  var isParent = isCurrentTNodeParent();\n  var parent = isParent ? currentTNode : currentTNode && currentTNode.parent; // Parents cannot cross component boundaries because components will be used in multiple places.\n\n  var tNode = tView.data[index] = createTNode(tView, parent, type, index, name, attrs); // Assign a pointer to the first child node of a given view. The first node is not always the one\n  // at index 0, in case of i18n, index 0 can be the instruction `i18nStart` and the first node has\n  // the index 1 or more, so we can't just check node index.\n\n  if (tView.firstChild === null) {\n    tView.firstChild = tNode;\n  }\n\n  if (currentTNode !== null) {\n    if (isParent) {\n      // FIXME(misko): This logic looks unnecessarily complicated. Could we simplify?\n      if (currentTNode.child == null && tNode.parent !== null) {\n        // We are in the same view, which means we are adding content node to the parent view.\n        currentTNode.child = tNode;\n      }\n    } else {\n      if (currentTNode.next === null) {\n        // In the case of i18n the `currentTNode` may already be linked, in which case we don't want\n        // to break the links which i18n created.\n        currentTNode.next = tNode;\n      }\n    }\n  }\n\n  return tNode;\n}\n/**\n * When elements are created dynamically after a view blueprint is created (e.g. through\n * i18nApply()), we need to adjust the blueprint for future\n * template passes.\n *\n * @param tView `TView` associated with `LView`\n * @param lView The `LView` containing the blueprint to adjust\n * @param numSlotsToAlloc The number of slots to alloc in the LView, should be >0\n * @param initialValue Initial value to store in blueprint\n */\n\n\nfunction allocExpando(tView, lView, numSlotsToAlloc, initialValue) {\n  if (numSlotsToAlloc === 0) return -1;\n\n  if (ngDevMode) {\n    assertFirstCreatePass(tView);\n    assertSame(tView, lView[TVIEW], '`LView` must be associated with `TView`!');\n    assertEqual(tView.data.length, lView.length, 'Expecting LView to be same size as TView');\n    assertEqual(tView.data.length, tView.blueprint.length, 'Expecting Blueprint to be same size as TView');\n    assertFirstUpdatePass(tView);\n  }\n\n  var allocIdx = lView.length;\n\n  for (var i = 0; i < numSlotsToAlloc; i++) {\n    lView.push(initialValue);\n    tView.blueprint.push(initialValue);\n    tView.data.push(null);\n  }\n\n  return allocIdx;\n} //////////////////////////\n//// Render\n//////////////////////////\n\n/**\n * Processes a view in the creation mode. This includes a number of steps in a specific order:\n * - creating view query functions (if any);\n * - executing a template function in the creation mode;\n * - updating static queries (if any);\n * - creating child components defined in a given view.\n */\n\n\nfunction renderView(tView, lView, context) {\n  ngDevMode && assertEqual(isCreationMode(lView), true, 'Should be run in creation mode');\n  enterView(lView);\n\n  try {\n    var viewQuery = tView.viewQuery;\n\n    if (viewQuery !== null) {\n      executeViewQueryFn(1\n      /* Create */\n      , viewQuery, context);\n    } // Execute a template associated with this view, if it exists. A template function might not be\n    // defined for the root component views.\n\n\n    var templateFn = tView.template;\n\n    if (templateFn !== null) {\n      executeTemplate(tView, lView, templateFn, 1\n      /* Create */\n      , context);\n    } // This needs to be set before children are processed to support recursive components.\n    // This must be set to false immediately after the first creation run because in an\n    // ngFor loop, all the views will be created together before update mode runs and turns\n    // off firstCreatePass. If we don't set it here, instances will perform directive\n    // matching, etc again and again.\n\n\n    if (tView.firstCreatePass) {\n      tView.firstCreatePass = false;\n    } // We resolve content queries specifically marked as `static` in creation mode. Dynamic\n    // content queries are resolved during change detection (i.e. update mode), after embedded\n    // views are refreshed (see block above).\n\n\n    if (tView.staticContentQueries) {\n      refreshContentQueries(tView, lView);\n    } // We must materialize query results before child components are processed\n    // in case a child component has projected a container. The LContainer needs\n    // to exist so the embedded views are properly attached by the container.\n\n\n    if (tView.staticViewQueries) {\n      executeViewQueryFn(2\n      /* Update */\n      , tView.viewQuery, context);\n    } // Render child component views.\n\n\n    var components = tView.components;\n\n    if (components !== null) {\n      renderChildComponents(lView, components);\n    }\n  } catch (error) {\n    // If we didn't manage to get past the first template pass due to\n    // an error, mark the view as corrupted so we can try to recover.\n    if (tView.firstCreatePass) {\n      tView.incompleteFirstPass = true;\n    }\n\n    throw error;\n  } finally {\n    lView[FLAGS] &= ~4\n    /* CreationMode */\n    ;\n    leaveView();\n  }\n}\n/**\n * Processes a view in update mode. This includes a number of steps in a specific order:\n * - executing a template function in update mode;\n * - executing hooks;\n * - refreshing queries;\n * - setting host bindings;\n * - refreshing child (embedded and component) views.\n */\n\n\nfunction refreshView(tView, lView, templateFn, context) {\n  ngDevMode && assertEqual(isCreationMode(lView), false, 'Should be run in update mode');\n  var flags = lView[FLAGS];\n  if ((flags & 256\n  /* Destroyed */\n  ) === 256\n  /* Destroyed */\n  ) return;\n  enterView(lView); // Check no changes mode is a dev only mode used to verify that bindings have not changed\n  // since they were assigned. We do not want to execute lifecycle hooks in that mode.\n\n  var isInCheckNoChangesPass = isInCheckNoChangesMode();\n\n  try {\n    resetPreOrderHookFlags(lView);\n    setBindingIndex(tView.bindingStartIndex);\n\n    if (templateFn !== null) {\n      executeTemplate(tView, lView, templateFn, 2\n      /* Update */\n      , context);\n    }\n\n    var hooksInitPhaseCompleted = (flags & 3\n    /* InitPhaseStateMask */\n    ) === 3\n    /* InitPhaseCompleted */\n    ; // execute pre-order hooks (OnInit, OnChanges, DoCheck)\n    // PERF WARNING: do NOT extract this to a separate function without running benchmarks\n\n    if (!isInCheckNoChangesPass) {\n      if (hooksInitPhaseCompleted) {\n        var preOrderCheckHooks = tView.preOrderCheckHooks;\n\n        if (preOrderCheckHooks !== null) {\n          executeCheckHooks(lView, preOrderCheckHooks, null);\n        }\n      } else {\n        var preOrderHooks = tView.preOrderHooks;\n\n        if (preOrderHooks !== null) {\n          executeInitAndCheckHooks(lView, preOrderHooks, 0\n          /* OnInitHooksToBeRun */\n          , null);\n        }\n\n        incrementInitPhaseFlags(lView, 0\n        /* OnInitHooksToBeRun */\n        );\n      }\n    } // First mark transplanted views that are declared in this lView as needing a refresh at their\n    // insertion points. This is needed to avoid the situation where the template is defined in this\n    // `LView` but its declaration appears after the insertion component.\n\n\n    markTransplantedViewsForRefresh(lView);\n    refreshEmbeddedViews(lView); // Content query results must be refreshed before content hooks are called.\n\n    if (tView.contentQueries !== null) {\n      refreshContentQueries(tView, lView);\n    } // execute content hooks (AfterContentInit, AfterContentChecked)\n    // PERF WARNING: do NOT extract this to a separate function without running benchmarks\n\n\n    if (!isInCheckNoChangesPass) {\n      if (hooksInitPhaseCompleted) {\n        var contentCheckHooks = tView.contentCheckHooks;\n\n        if (contentCheckHooks !== null) {\n          executeCheckHooks(lView, contentCheckHooks);\n        }\n      } else {\n        var contentHooks = tView.contentHooks;\n\n        if (contentHooks !== null) {\n          executeInitAndCheckHooks(lView, contentHooks, 1\n          /* AfterContentInitHooksToBeRun */\n          );\n        }\n\n        incrementInitPhaseFlags(lView, 1\n        /* AfterContentInitHooksToBeRun */\n        );\n      }\n    }\n\n    processHostBindingOpCodes(tView, lView); // Refresh child component views.\n\n    var components = tView.components;\n\n    if (components !== null) {\n      refreshChildComponents(lView, components);\n    } // View queries must execute after refreshing child components because a template in this view\n    // could be inserted in a child component. If the view query executes before child component\n    // refresh, the template might not yet be inserted.\n\n\n    var viewQuery = tView.viewQuery;\n\n    if (viewQuery !== null) {\n      executeViewQueryFn(2\n      /* Update */\n      , viewQuery, context);\n    } // execute view hooks (AfterViewInit, AfterViewChecked)\n    // PERF WARNING: do NOT extract this to a separate function without running benchmarks\n\n\n    if (!isInCheckNoChangesPass) {\n      if (hooksInitPhaseCompleted) {\n        var viewCheckHooks = tView.viewCheckHooks;\n\n        if (viewCheckHooks !== null) {\n          executeCheckHooks(lView, viewCheckHooks);\n        }\n      } else {\n        var viewHooks = tView.viewHooks;\n\n        if (viewHooks !== null) {\n          executeInitAndCheckHooks(lView, viewHooks, 2\n          /* AfterViewInitHooksToBeRun */\n          );\n        }\n\n        incrementInitPhaseFlags(lView, 2\n        /* AfterViewInitHooksToBeRun */\n        );\n      }\n    }\n\n    if (tView.firstUpdatePass === true) {\n      // We need to make sure that we only flip the flag on successful `refreshView` only\n      // Don't do this in `finally` block.\n      // If we did this in `finally` block then an exception could block the execution of styling\n      // instructions which in turn would be unable to insert themselves into the styling linked\n      // list. The result of this would be that if the exception would not be throw on subsequent CD\n      // the styling would be unable to process it data and reflect to the DOM.\n      tView.firstUpdatePass = false;\n    } // Do not reset the dirty state when running in check no changes mode. We don't want components\n    // to behave differently depending on whether check no changes is enabled or not. For example:\n    // Marking an OnPush component as dirty from within the `ngAfterViewInit` hook in order to\n    // refresh a `NgClass` binding should work. If we would reset the dirty state in the check\n    // no changes cycle, the component would be not be dirty for the next update pass. This would\n    // be different in production mode where the component dirty state is not reset.\n\n\n    if (!isInCheckNoChangesPass) {\n      lView[FLAGS] &= ~(64\n      /* Dirty */\n      | 8\n      /* FirstLViewPass */\n      );\n    }\n\n    if (lView[FLAGS] & 1024\n    /* RefreshTransplantedView */\n    ) {\n      lView[FLAGS] &= ~1024\n      /* RefreshTransplantedView */\n      ;\n      updateTransplantedViewCount(lView[PARENT], -1);\n    }\n  } finally {\n    leaveView();\n  }\n}\n\nfunction renderComponentOrTemplate(tView, lView, templateFn, context) {\n  var rendererFactory = lView[RENDERER_FACTORY];\n  var normalExecutionPath = !isInCheckNoChangesMode();\n  var creationModeIsActive = isCreationMode(lView);\n\n  try {\n    if (normalExecutionPath && !creationModeIsActive && rendererFactory.begin) {\n      rendererFactory.begin();\n    }\n\n    if (creationModeIsActive) {\n      renderView(tView, lView, context);\n    }\n\n    refreshView(tView, lView, templateFn, context);\n  } finally {\n    if (normalExecutionPath && !creationModeIsActive && rendererFactory.end) {\n      rendererFactory.end();\n    }\n  }\n}\n\nfunction executeTemplate(tView, lView, templateFn, rf, context) {\n  var prevSelectedIndex = getSelectedIndex();\n\n  try {\n    setSelectedIndex(-1);\n\n    if (rf & 2\n    /* Update */\n    && lView.length > HEADER_OFFSET) {\n      // When we're updating, inherently select 0 so we don't\n      // have to generate that instruction for most update blocks.\n      selectIndexInternal(tView, lView, HEADER_OFFSET, isInCheckNoChangesMode());\n    }\n\n    templateFn(rf, context);\n  } finally {\n    setSelectedIndex(prevSelectedIndex);\n  }\n} //////////////////////////\n//// Element\n//////////////////////////\n\n\nfunction executeContentQueries(tView, tNode, lView) {\n  if (isContentQueryHost(tNode)) {\n    var start = tNode.directiveStart;\n    var end = tNode.directiveEnd;\n\n    for (var directiveIndex = start; directiveIndex < end; directiveIndex++) {\n      var def = tView.data[directiveIndex];\n\n      if (def.contentQueries) {\n        def.contentQueries(1\n        /* Create */\n        , lView[directiveIndex], directiveIndex);\n      }\n    }\n  }\n}\n/**\n * Creates directive instances.\n */\n\n\nfunction createDirectivesInstances(tView, lView, tNode) {\n  if (!getBindingsEnabled()) return;\n  instantiateAllDirectives(tView, lView, tNode, getNativeByTNode(tNode, lView));\n\n  if ((tNode.flags & 128\n  /* hasHostBindings */\n  ) === 128\n  /* hasHostBindings */\n  ) {\n    invokeDirectivesHostBindings(tView, lView, tNode);\n  }\n}\n/**\n * Takes a list of local names and indices and pushes the resolved local variable values\n * to LView in the same order as they are loaded in the template with load().\n */\n\n\nfunction saveResolvedLocalsInData(viewData, tNode) {\n  var localRefExtractor = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : getNativeByTNode;\n  var localNames = tNode.localNames;\n\n  if (localNames !== null) {\n    var localIndex = tNode.index + 1;\n\n    for (var i = 0; i < localNames.length; i += 2) {\n      var index = localNames[i + 1];\n      var value = index === -1 ? localRefExtractor(tNode, viewData) : viewData[index];\n      viewData[localIndex++] = value;\n    }\n  }\n}\n/**\n * Gets TView from a template function or creates a new TView\n * if it doesn't already exist.\n *\n * @param def ComponentDef\n * @returns TView\n */\n\n\nfunction getOrCreateTComponentView(def) {\n  var tView = def.tView; // Create a TView if there isn't one, or recreate it if the first create pass didn't\n  // complete successfully since we can't know for sure whether it's in a usable shape.\n\n  if (tView === null || tView.incompleteFirstPass) {\n    // Declaration node here is null since this function is called when we dynamically create a\n    // component and hence there is no declaration.\n    var declTNode = null;\n    return def.tView = createTView(1\n    /* Component */\n    , declTNode, def.template, def.decls, def.vars, def.directiveDefs, def.pipeDefs, def.viewQuery, def.schemas, def.consts);\n  }\n\n  return tView;\n}\n/**\n * Creates a TView instance\n *\n * @param type Type of `TView`.\n * @param declTNode Declaration location of this `TView`.\n * @param templateFn Template function\n * @param decls The number of nodes, local refs, and pipes in this template\n * @param directives Registry of directives for this view\n * @param pipes Registry of pipes for this view\n * @param viewQuery View queries for this view\n * @param schemas Schemas for this view\n * @param consts Constants for this view\n */\n\n\nfunction createTView(type, declTNode, templateFn, decls, vars, directives, pipes, viewQuery, schemas, constsOrFactory) {\n  ngDevMode && ngDevMode.tView++;\n  var bindingStartIndex = HEADER_OFFSET + decls; // This length does not yet contain host bindings from child directives because at this point,\n  // we don't know which directives are active on this template. As soon as a directive is matched\n  // that has a host binding, we will update the blueprint with that def's hostVars count.\n\n  var initialViewLength = bindingStartIndex + vars;\n  var blueprint = createViewBlueprint(bindingStartIndex, initialViewLength);\n  var consts = typeof constsOrFactory === 'function' ? constsOrFactory() : constsOrFactory;\n  var tView = blueprint[TVIEW] = ngDevMode ? new TViewConstructor(type, // type: TViewType,\n  blueprint, // blueprint: LView,\n  templateFn, // template: ComponentTemplate<{}>|null,\n  null, // queries: TQueries|null\n  viewQuery, // viewQuery: ViewQueriesFunction<{}>|null,\n  declTNode, // declTNode: TNode|null,\n  cloneToTViewData(blueprint).fill(null, bindingStartIndex), // data: TData,\n  bindingStartIndex, // bindingStartIndex: number,\n  initialViewLength, // expandoStartIndex: number,\n  null, // hostBindingOpCodes: HostBindingOpCodes,\n  true, // firstCreatePass: boolean,\n  true, // firstUpdatePass: boolean,\n  false, // staticViewQueries: boolean,\n  false, // staticContentQueries: boolean,\n  null, // preOrderHooks: HookData|null,\n  null, // preOrderCheckHooks: HookData|null,\n  null, // contentHooks: HookData|null,\n  null, // contentCheckHooks: HookData|null,\n  null, // viewHooks: HookData|null,\n  null, // viewCheckHooks: HookData|null,\n  null, // destroyHooks: DestroyHookData|null,\n  null, // cleanup: any[]|null,\n  null, // contentQueries: number[]|null,\n  null, // components: number[]|null,\n  typeof directives === 'function' ? //\n  directives() : //\n  directives, // directiveRegistry: DirectiveDefList|null,\n  typeof pipes === 'function' ? pipes() : pipes, // pipeRegistry: PipeDefList|null,\n  null, // firstChild: TNode|null,\n  schemas, // schemas: SchemaMetadata[]|null,\n  consts, // consts: TConstants|null\n  false, // incompleteFirstPass: boolean\n  decls, // ngDevMode only: decls\n  vars) : {\n    type: type,\n    blueprint: blueprint,\n    template: templateFn,\n    queries: null,\n    viewQuery: viewQuery,\n    declTNode: declTNode,\n    data: blueprint.slice().fill(null, bindingStartIndex),\n    bindingStartIndex: bindingStartIndex,\n    expandoStartIndex: initialViewLength,\n    hostBindingOpCodes: null,\n    firstCreatePass: true,\n    firstUpdatePass: true,\n    staticViewQueries: false,\n    staticContentQueries: false,\n    preOrderHooks: null,\n    preOrderCheckHooks: null,\n    contentHooks: null,\n    contentCheckHooks: null,\n    viewHooks: null,\n    viewCheckHooks: null,\n    destroyHooks: null,\n    cleanup: null,\n    contentQueries: null,\n    components: null,\n    directiveRegistry: typeof directives === 'function' ? directives() : directives,\n    pipeRegistry: typeof pipes === 'function' ? pipes() : pipes,\n    firstChild: null,\n    schemas: schemas,\n    consts: consts,\n    incompleteFirstPass: false\n  };\n\n  if (ngDevMode) {\n    // For performance reasons it is important that the tView retains the same shape during runtime.\n    // (To make sure that all of the code is monomorphic.) For this reason we seal the object to\n    // prevent class transitions.\n    Object.seal(tView);\n  }\n\n  return tView;\n}\n\nfunction createViewBlueprint(bindingStartIndex, initialViewLength) {\n  var blueprint = ngDevMode ? new LViewBlueprint() : [];\n\n  for (var i = 0; i < initialViewLength; i++) {\n    blueprint.push(i < bindingStartIndex ? null : NO_CHANGE);\n  }\n\n  return blueprint;\n}\n\nfunction createError(text, token) {\n  return new Error(\"Renderer: \".concat(text, \" [\").concat(stringifyForError(token), \"]\"));\n}\n\nfunction assertHostNodeExists(rElement, elementOrSelector) {\n  if (!rElement) {\n    if (typeof elementOrSelector === 'string') {\n      throw createError('Host node with selector not found:', elementOrSelector);\n    } else {\n      throw createError('Host node is required:', elementOrSelector);\n    }\n  }\n}\n/**\n * Locates the host native element, used for bootstrapping existing nodes into rendering pipeline.\n *\n * @param rendererFactory Factory function to create renderer instance.\n * @param elementOrSelector Render element or CSS selector to locate the element.\n * @param encapsulation View Encapsulation defined for component that requests host element.\n */\n\n\nfunction locateHostElement(renderer, elementOrSelector, encapsulation) {\n  if (isProceduralRenderer(renderer)) {\n    // When using native Shadow DOM, do not clear host element to allow native slot projection\n    var preserveContent = encapsulation === ViewEncapsulation$1.ShadowDom;\n    return renderer.selectRootElement(elementOrSelector, preserveContent);\n  }\n\n  var rElement = typeof elementOrSelector === 'string' ? renderer.querySelector(elementOrSelector) : elementOrSelector;\n  ngDevMode && assertHostNodeExists(rElement, elementOrSelector); // Always clear host element's content when Renderer3 is in use. For procedural renderer case we\n  // make it depend on whether ShadowDom encapsulation is used (in which case the content should be\n  // preserved to allow native slot projection). ShadowDom encapsulation requires procedural\n  // renderer, and procedural renderer case is handled above.\n\n  rElement.textContent = '';\n  return rElement;\n}\n/**\n * Saves context for this cleanup function in LView.cleanupInstances.\n *\n * On the first template pass, saves in TView:\n * - Cleanup function\n * - Index of context we just saved in LView.cleanupInstances\n */\n\n\nfunction storeCleanupWithContext(tView, lView, context, cleanupFn) {\n  var lCleanup = getLCleanup(lView);\n  lCleanup.push(context);\n\n  if (tView.firstCreatePass) {\n    getTViewCleanup(tView).push(cleanupFn, lCleanup.length - 1);\n  }\n}\n\nfunction createTNode(tView, tParent, type, index, value, attrs) {\n  ngDevMode && index !== 0 && // 0 are bogus nodes and they are OK. See `createContainerRef` in\n  // `view_engine_compatibility` for additional context.\n  assertGreaterThanOrEqual(index, HEADER_OFFSET, 'TNodes can\\'t be in the LView header.');\n  ngDevMode && assertNotSame(attrs, undefined, '\\'undefined\\' is not valid value for \\'attrs\\'');\n  ngDevMode && ngDevMode.tNode++;\n  ngDevMode && tParent && assertTNodeForTView(tParent, tView);\n  var injectorIndex = tParent ? tParent.injectorIndex : -1;\n  var tNode = ngDevMode ? new TNodeDebug(tView, // tView_: TView\n  type, // type: TNodeType\n  index, // index: number\n  null, // insertBeforeIndex: null|-1|number|number[]\n  injectorIndex, // injectorIndex: number\n  -1, // directiveStart: number\n  -1, // directiveEnd: number\n  -1, // directiveStylingLast: number\n  null, // propertyBindings: number[]|null\n  0, // flags: TNodeFlags\n  0, // providerIndexes: TNodeProviderIndexes\n  value, // value: string|null\n  attrs, // attrs: (string|AttributeMarker|(string|SelectorFlags)[])[]|null\n  null, // mergedAttrs\n  null, // localNames: (string|number)[]|null\n  undefined, // initialInputs: (string[]|null)[]|null|undefined\n  null, // inputs: PropertyAliases|null\n  null, // outputs: PropertyAliases|null\n  null, // tViews: ITView|ITView[]|null\n  null, // next: ITNode|null\n  null, // projectionNext: ITNode|null\n  null, // child: ITNode|null\n  tParent, // parent: TElementNode|TContainerNode|null\n  null, // projection: number|(ITNode|RNode[])[]|null\n  null, // styles: string|null\n  null, // stylesWithoutHost: string|null\n  undefined, // residualStyles: string|null\n  null, // classes: string|null\n  null, // classesWithoutHost: string|null\n  undefined, // residualClasses: string|null\n  0, // classBindings: TStylingRange;\n  0) : {\n    type: type,\n    index: index,\n    insertBeforeIndex: null,\n    injectorIndex: injectorIndex,\n    directiveStart: -1,\n    directiveEnd: -1,\n    directiveStylingLast: -1,\n    propertyBindings: null,\n    flags: 0,\n    providerIndexes: 0,\n    value: value,\n    attrs: attrs,\n    mergedAttrs: null,\n    localNames: null,\n    initialInputs: undefined,\n    inputs: null,\n    outputs: null,\n    tViews: null,\n    next: null,\n    projectionNext: null,\n    child: null,\n    parent: tParent,\n    projection: null,\n    styles: null,\n    stylesWithoutHost: null,\n    residualStyles: undefined,\n    classes: null,\n    classesWithoutHost: null,\n    residualClasses: undefined,\n    classBindings: 0,\n    styleBindings: 0\n  };\n\n  if (ngDevMode) {\n    // For performance reasons it is important that the tNode retains the same shape during runtime.\n    // (To make sure that all of the code is monomorphic.) For this reason we seal the object to\n    // prevent class transitions.\n    Object.seal(tNode);\n  }\n\n  return tNode;\n}\n\nfunction generatePropertyAliases(inputAliasMap, directiveDefIdx, propStore) {\n  for (var publicName in inputAliasMap) {\n    if (inputAliasMap.hasOwnProperty(publicName)) {\n      propStore = propStore === null ? {} : propStore;\n      var internalName = inputAliasMap[publicName];\n\n      if (propStore.hasOwnProperty(publicName)) {\n        propStore[publicName].push(directiveDefIdx, internalName);\n      } else {\n        propStore[publicName] = [directiveDefIdx, internalName];\n      }\n    }\n  }\n\n  return propStore;\n}\n/**\n * Initializes data structures required to work with directive inputs and outputs.\n * Initialization is done for all directives matched on a given TNode.\n */\n\n\nfunction initializeInputAndOutputAliases(tView, tNode) {\n  ngDevMode && assertFirstCreatePass(tView);\n  var start = tNode.directiveStart;\n  var end = tNode.directiveEnd;\n  var tViewData = tView.data;\n  var tNodeAttrs = tNode.attrs;\n  var inputsFromAttrs = ngDevMode ? new TNodeInitialInputs() : [];\n  var inputsStore = null;\n  var outputsStore = null;\n\n  for (var i = start; i < end; i++) {\n    var _directiveDef3 = tViewData[i];\n    var directiveInputs = _directiveDef3.inputs; // Do not use unbound attributes as inputs to structural directives, since structural\n    // directive inputs can only be set using microsyntax (e.g. `<div *dir=\"exp\">`).\n    // TODO(FW-1930): microsyntax expressions may also contain unbound/static attributes, which\n    // should be set for inline templates.\n\n    var initialInputs = tNodeAttrs !== null && !isInlineTemplate(tNode) ? generateInitialInputs(directiveInputs, tNodeAttrs) : null;\n    inputsFromAttrs.push(initialInputs);\n    inputsStore = generatePropertyAliases(directiveInputs, i, inputsStore);\n    outputsStore = generatePropertyAliases(_directiveDef3.outputs, i, outputsStore);\n  }\n\n  if (inputsStore !== null) {\n    if (inputsStore.hasOwnProperty('class')) {\n      tNode.flags |= 16\n      /* hasClassInput */\n      ;\n    }\n\n    if (inputsStore.hasOwnProperty('style')) {\n      tNode.flags |= 32\n      /* hasStyleInput */\n      ;\n    }\n  }\n\n  tNode.initialInputs = inputsFromAttrs;\n  tNode.inputs = inputsStore;\n  tNode.outputs = outputsStore;\n}\n/**\n * Mapping between attributes names that don't correspond to their element property names.\n *\n * Performance note: this function is written as a series of if checks (instead of, say, a property\n * object lookup) for performance reasons - the series of `if` checks seems to be the fastest way of\n * mapping property names. Do NOT change without benchmarking.\n *\n * Note: this mapping has to be kept in sync with the equally named mapping in the template\n * type-checking machinery of ngtsc.\n */\n\n\nfunction mapPropName(name) {\n  if (name === 'class') return 'className';\n  if (name === 'for') return 'htmlFor';\n  if (name === 'formaction') return 'formAction';\n  if (name === 'innerHtml') return 'innerHTML';\n  if (name === 'readonly') return 'readOnly';\n  if (name === 'tabindex') return 'tabIndex';\n  return name;\n}\n\nfunction elementPropertyInternal(tView, tNode, lView, propName, value, renderer, sanitizer, nativeOnly) {\n  ngDevMode && assertNotSame(value, NO_CHANGE, 'Incoming value should never be NO_CHANGE.');\n  var element = getNativeByTNode(tNode, lView);\n  var inputData = tNode.inputs;\n  var dataValue;\n\n  if (!nativeOnly && inputData != null && (dataValue = inputData[propName])) {\n    setInputsForProperty(tView, lView, dataValue, propName, value);\n    if (isComponentHost(tNode)) markDirtyIfOnPush(lView, tNode.index);\n\n    if (ngDevMode) {\n      setNgReflectProperties(lView, element, tNode.type, dataValue, value);\n    }\n  } else if (tNode.type & 3\n  /* AnyRNode */\n  ) {\n    propName = mapPropName(propName);\n\n    if (ngDevMode) {\n      validateAgainstEventProperties(propName);\n\n      if (!validateProperty(tView, element, propName, tNode)) {\n        // Return here since we only log warnings for unknown properties.\n        logUnknownPropertyError(propName, tNode);\n        return;\n      }\n\n      ngDevMode.rendererSetProperty++;\n    } // It is assumed that the sanitizer is only added when the compiler determines that the\n    // property is risky, so sanitization can be done without further checks.\n\n\n    value = sanitizer != null ? sanitizer(value, tNode.value || '', propName) : value;\n\n    if (isProceduralRenderer(renderer)) {\n      renderer.setProperty(element, propName, value);\n    } else if (!isAnimationProp(propName)) {\n      element.setProperty ? element.setProperty(propName, value) : element[propName] = value;\n    }\n  } else if (tNode.type & 12\n  /* AnyContainer */\n  ) {\n    // If the node is a container and the property didn't\n    // match any of the inputs or schemas we should throw.\n    if (ngDevMode && !matchingSchemas(tView, tNode.value)) {\n      logUnknownPropertyError(propName, tNode);\n    }\n  }\n}\n/** If node is an OnPush component, marks its LView dirty. */\n\n\nfunction markDirtyIfOnPush(lView, viewIndex) {\n  ngDevMode && assertLView(lView);\n  var childComponentLView = getComponentLViewByIndex(viewIndex, lView);\n\n  if (!(childComponentLView[FLAGS] & 16\n  /* CheckAlways */\n  )) {\n    childComponentLView[FLAGS] |= 64\n    /* Dirty */\n    ;\n  }\n}\n\nfunction setNgReflectProperty(lView, element, type, attrName, value) {\n  var renderer = lView[RENDERER];\n  attrName = normalizeDebugBindingName(attrName);\n  var debugValue = normalizeDebugBindingValue(value);\n\n  if (type & 3\n  /* AnyRNode */\n  ) {\n    if (value == null) {\n      isProceduralRenderer(renderer) ? renderer.removeAttribute(element, attrName) : element.removeAttribute(attrName);\n    } else {\n      isProceduralRenderer(renderer) ? renderer.setAttribute(element, attrName, debugValue) : element.setAttribute(attrName, debugValue);\n    }\n  } else {\n    var textContent = \"bindings=\".concat(JSON.stringify(_defineProperty({}, attrName, debugValue), null, 2));\n\n    if (isProceduralRenderer(renderer)) {\n      renderer.setValue(element, textContent);\n    } else {\n      element.textContent = textContent;\n    }\n  }\n}\n\nfunction setNgReflectProperties(lView, element, type, dataValue, value) {\n  if (type & (3\n  /* AnyRNode */\n  | 4\n  /* Container */\n  )) {\n    /**\n     * dataValue is an array containing runtime input or output names for the directives:\n     * i+0: directive instance index\n     * i+1: privateName\n     *\n     * e.g. [0, 'change', 'change-minified']\n     * we want to set the reflected property with the privateName: dataValue[i+1]\n     */\n    for (var i = 0; i < dataValue.length; i += 2) {\n      setNgReflectProperty(lView, element, type, dataValue[i + 1], value);\n    }\n  }\n}\n\nfunction validateProperty(tView, element, propName, tNode) {\n  // If `schemas` is set to `null`, that's an indication that this Component was compiled in AOT\n  // mode where this check happens at compile time. In JIT mode, `schemas` is always present and\n  // defined as an array (as an empty array in case `schemas` field is not defined) and we should\n  // execute the check below.\n  if (tView.schemas === null) return true; // The property is considered valid if the element matches the schema, it exists on the element\n  // or it is synthetic, and we are in a browser context (web worker nodes should be skipped).\n\n  if (matchingSchemas(tView, tNode.value) || propName in element || isAnimationProp(propName)) {\n    return true;\n  } // Note: `typeof Node` returns 'function' in most browsers, but on IE it is 'object' so we\n  // need to account for both here, while being careful for `typeof null` also returning 'object'.\n\n\n  return typeof Node === 'undefined' || Node === null || !(element instanceof Node);\n}\n\nfunction matchingSchemas(tView, tagName) {\n  var schemas = tView.schemas;\n\n  if (schemas !== null) {\n    for (var i = 0; i < schemas.length; i++) {\n      var schema = schemas[i];\n\n      if (schema === NO_ERRORS_SCHEMA || schema === CUSTOM_ELEMENTS_SCHEMA && tagName && tagName.indexOf('-') > -1) {\n        return true;\n      }\n    }\n  }\n\n  return false;\n}\n/**\n * Logs an error that a property is not supported on an element.\n * @param propName Name of the invalid property.\n * @param tNode Node on which we encountered the property.\n */\n\n\nfunction logUnknownPropertyError(propName, tNode) {\n  var message = \"Can't bind to '\".concat(propName, \"' since it isn't a known property of '\").concat(tNode.value, \"'.\");\n  console.error(formatRuntimeError(\"303\"\n  /* UNKNOWN_BINDING */\n  , message));\n}\n/**\n * Instantiate a root component.\n */\n\n\nfunction instantiateRootComponent(tView, lView, def) {\n  var rootTNode = getCurrentTNode();\n\n  if (tView.firstCreatePass) {\n    if (def.providersResolver) def.providersResolver(def);\n    var directiveIndex = allocExpando(tView, lView, 1, null);\n    ngDevMode && assertEqual(directiveIndex, rootTNode.directiveStart, 'Because this is a root component the allocated expando should match the TNode component.');\n    configureViewWithDirective(tView, rootTNode, lView, directiveIndex, def);\n  }\n\n  var directive = getNodeInjectable(lView, tView, rootTNode.directiveStart, rootTNode);\n  attachPatchData(directive, lView);\n  var native = getNativeByTNode(rootTNode, lView);\n\n  if (native) {\n    attachPatchData(native, lView);\n  }\n\n  return directive;\n}\n/**\n * Resolve the matched directives on a node.\n */\n\n\nfunction resolveDirectives(tView, lView, tNode, localRefs) {\n  // Please make sure to have explicit type for `exportsMap`. Inferred type triggers bug in\n  // tsickle.\n  ngDevMode && assertFirstCreatePass(tView);\n  var hasDirectives = false;\n\n  if (getBindingsEnabled()) {\n    var directiveDefs = findDirectiveDefMatches(tView, lView, tNode);\n    var exportsMap = localRefs === null ? null : {\n      '': -1\n    };\n\n    if (directiveDefs !== null) {\n      hasDirectives = true;\n      initTNodeFlags(tNode, tView.data.length, directiveDefs.length); // When the same token is provided by several directives on the same node, some rules apply in\n      // the viewEngine:\n      // - viewProviders have priority over providers\n      // - the last directive in NgModule.declarations has priority over the previous one\n      // So to match these rules, the order in which providers are added in the arrays is very\n      // important.\n\n      for (var i = 0; i < directiveDefs.length; i++) {\n        var def = directiveDefs[i];\n        if (def.providersResolver) def.providersResolver(def);\n      }\n\n      var preOrderHooksFound = false;\n      var preOrderCheckHooksFound = false;\n      var directiveIdx = allocExpando(tView, lView, directiveDefs.length, null);\n      ngDevMode && assertSame(directiveIdx, tNode.directiveStart, 'TNode.directiveStart should point to just allocated space');\n\n      for (var _i3 = 0; _i3 < directiveDefs.length; _i3++) {\n        var _def2 = directiveDefs[_i3]; // Merge the attrs in the order of matches. This assumes that the first directive is the\n        // component itself, so that the component has the least priority.\n\n        tNode.mergedAttrs = mergeHostAttrs(tNode.mergedAttrs, _def2.hostAttrs);\n        configureViewWithDirective(tView, tNode, lView, directiveIdx, _def2);\n        saveNameToExportMap(directiveIdx, _def2, exportsMap);\n        if (_def2.contentQueries !== null) tNode.flags |= 8\n        /* hasContentQuery */\n        ;\n        if (_def2.hostBindings !== null || _def2.hostAttrs !== null || _def2.hostVars !== 0) tNode.flags |= 128\n        /* hasHostBindings */\n        ;\n        var lifeCycleHooks = _def2.type.prototype; // Only push a node index into the preOrderHooks array if this is the first\n        // pre-order hook found on this node.\n\n        if (!preOrderHooksFound && (lifeCycleHooks.ngOnChanges || lifeCycleHooks.ngOnInit || lifeCycleHooks.ngDoCheck)) {\n          // We will push the actual hook function into this array later during dir instantiation.\n          // We cannot do it now because we must ensure hooks are registered in the same\n          // order that directives are created (i.e. injection order).\n          (tView.preOrderHooks || (tView.preOrderHooks = [])).push(tNode.index);\n          preOrderHooksFound = true;\n        }\n\n        if (!preOrderCheckHooksFound && (lifeCycleHooks.ngOnChanges || lifeCycleHooks.ngDoCheck)) {\n          (tView.preOrderCheckHooks || (tView.preOrderCheckHooks = [])).push(tNode.index);\n          preOrderCheckHooksFound = true;\n        }\n\n        directiveIdx++;\n      }\n\n      initializeInputAndOutputAliases(tView, tNode);\n    }\n\n    if (exportsMap) cacheMatchingLocalNames(tNode, localRefs, exportsMap);\n  } // Merge the template attrs last so that they have the highest priority.\n\n\n  tNode.mergedAttrs = mergeHostAttrs(tNode.mergedAttrs, tNode.attrs);\n  return hasDirectives;\n}\n/**\n * Add `hostBindings` to the `TView.hostBindingOpCodes`.\n *\n * @param tView `TView` to which the `hostBindings` should be added.\n * @param tNode `TNode` the element which contains the directive\n * @param lView `LView` current `LView`\n * @param directiveIdx Directive index in view.\n * @param directiveVarsIdx Where will the directive's vars be stored\n * @param def `ComponentDef`/`DirectiveDef`, which contains the `hostVars`/`hostBindings` to add.\n */\n\n\nfunction registerHostBindingOpCodes(tView, tNode, lView, directiveIdx, directiveVarsIdx, def) {\n  ngDevMode && assertFirstCreatePass(tView);\n  var hostBindings = def.hostBindings;\n\n  if (hostBindings) {\n    var hostBindingOpCodes = tView.hostBindingOpCodes;\n\n    if (hostBindingOpCodes === null) {\n      hostBindingOpCodes = tView.hostBindingOpCodes = [];\n    }\n\n    var elementIndx = ~tNode.index;\n\n    if (lastSelectedElementIdx(hostBindingOpCodes) != elementIndx) {\n      // Conditionally add select element so that we are more efficient in execution.\n      // NOTE: this is strictly not necessary and it trades code size for runtime perf.\n      // (We could just always add it.)\n      hostBindingOpCodes.push(elementIndx);\n    }\n\n    hostBindingOpCodes.push(directiveIdx, directiveVarsIdx, hostBindings);\n  }\n}\n/**\n * Returns the last selected element index in the `HostBindingOpCodes`\n *\n * For perf reasons we don't need to update the selected element index in `HostBindingOpCodes` only\n * if it changes. This method returns the last index (or '0' if not found.)\n *\n * Selected element index are only the ones which are negative.\n */\n\n\nfunction lastSelectedElementIdx(hostBindingOpCodes) {\n  var i = hostBindingOpCodes.length;\n\n  while (i > 0) {\n    var value = hostBindingOpCodes[--i];\n\n    if (typeof value === 'number' && value < 0) {\n      return value;\n    }\n  }\n\n  return 0;\n}\n/**\n * Instantiate all the directives that were previously resolved on the current node.\n */\n\n\nfunction instantiateAllDirectives(tView, lView, tNode, native) {\n  var start = tNode.directiveStart;\n  var end = tNode.directiveEnd;\n\n  if (!tView.firstCreatePass) {\n    getOrCreateNodeInjectorForNode(tNode, lView);\n  }\n\n  attachPatchData(native, lView);\n  var initialInputs = tNode.initialInputs;\n\n  for (var i = start; i < end; i++) {\n    var def = tView.data[i];\n    var isComponent = isComponentDef(def);\n\n    if (isComponent) {\n      ngDevMode && assertTNodeType(tNode, 3\n      /* AnyRNode */\n      );\n      addComponentLogic(lView, tNode, def);\n    }\n\n    var directive = getNodeInjectable(lView, tView, i, tNode);\n    attachPatchData(directive, lView);\n\n    if (initialInputs !== null) {\n      setInputsFromAttrs(lView, i - start, directive, def, tNode, initialInputs);\n    }\n\n    if (isComponent) {\n      var componentView = getComponentLViewByIndex(tNode.index, lView);\n      componentView[CONTEXT] = directive;\n    }\n  }\n}\n\nfunction invokeDirectivesHostBindings(tView, lView, tNode) {\n  var start = tNode.directiveStart;\n  var end = tNode.directiveEnd;\n  var firstCreatePass = tView.firstCreatePass;\n  var elementIndex = tNode.index;\n  var currentDirectiveIndex = getCurrentDirectiveIndex();\n\n  try {\n    setSelectedIndex(elementIndex);\n\n    for (var dirIndex = start; dirIndex < end; dirIndex++) {\n      var def = tView.data[dirIndex];\n      var directive = lView[dirIndex];\n      setCurrentDirectiveIndex(dirIndex);\n\n      if (def.hostBindings !== null || def.hostVars !== 0 || def.hostAttrs !== null) {\n        invokeHostBindingsInCreationMode(def, directive);\n      }\n    }\n  } finally {\n    setSelectedIndex(-1);\n    setCurrentDirectiveIndex(currentDirectiveIndex);\n  }\n}\n/**\n * Invoke the host bindings in creation mode.\n *\n * @param def `DirectiveDef` which may contain the `hostBindings` function.\n * @param directive Instance of directive.\n */\n\n\nfunction invokeHostBindingsInCreationMode(def, directive) {\n  if (def.hostBindings !== null) {\n    def.hostBindings(1\n    /* Create */\n    , directive);\n  }\n}\n/**\n * Matches the current node against all available selectors.\n * If a component is matched (at most one), it is returned in first position in the array.\n */\n\n\nfunction findDirectiveDefMatches(tView, viewData, tNode) {\n  ngDevMode && assertFirstCreatePass(tView);\n  ngDevMode && assertTNodeType(tNode, 3\n  /* AnyRNode */\n  | 12\n  /* AnyContainer */\n  );\n  var registry = tView.directiveRegistry;\n  var matches = null;\n\n  if (registry) {\n    for (var i = 0; i < registry.length; i++) {\n      var def = registry[i];\n\n      if (isNodeMatchingSelectorList(tNode, def.selectors,\n      /* isProjectionMode */\n      false)) {\n        matches || (matches = ngDevMode ? new MatchesArray() : []);\n        diPublicInInjector(getOrCreateNodeInjectorForNode(tNode, viewData), tView, def.type);\n\n        if (isComponentDef(def)) {\n          if (ngDevMode) {\n            assertTNodeType(tNode, 2\n            /* Element */\n            , \"\\\"\".concat(tNode.value, \"\\\" tags cannot be used as component hosts. \") + \"Please use a different tag to activate the \".concat(stringify(def.type), \" component.\"));\n            if (tNode.flags & 2\n            /* isComponentHost */\n            ) throwMultipleComponentError(tNode);\n          }\n\n          markAsComponentHost(tView, tNode); // The component is always stored first with directives after.\n\n          matches.unshift(def);\n        } else {\n          matches.push(def);\n        }\n      }\n    }\n  }\n\n  return matches;\n}\n/**\n * Marks a given TNode as a component's host. This consists of:\n * - setting appropriate TNode flags;\n * - storing index of component's host element so it will be queued for view refresh during CD.\n */\n\n\nfunction markAsComponentHost(tView, hostTNode) {\n  ngDevMode && assertFirstCreatePass(tView);\n  hostTNode.flags |= 2\n  /* isComponentHost */\n  ;\n  (tView.components || (tView.components = ngDevMode ? new TViewComponents() : [])).push(hostTNode.index);\n}\n/** Caches local names and their matching directive indices for query and template lookups. */\n\n\nfunction cacheMatchingLocalNames(tNode, localRefs, exportsMap) {\n  if (localRefs) {\n    var localNames = tNode.localNames = ngDevMode ? new TNodeLocalNames() : []; // Local names must be stored in tNode in the same order that localRefs are defined\n    // in the template to ensure the data is loaded in the same slots as their refs\n    // in the template (for template queries).\n\n    for (var i = 0; i < localRefs.length; i += 2) {\n      var index = exportsMap[localRefs[i + 1]];\n      if (index == null) throw new RuntimeError(\"301\"\n      /* EXPORT_NOT_FOUND */\n      , \"Export of name '\".concat(localRefs[i + 1], \"' not found!\"));\n      localNames.push(localRefs[i], index);\n    }\n  }\n}\n/**\n * Builds up an export map as directives are created, so local refs can be quickly mapped\n * to their directive instances.\n */\n\n\nfunction saveNameToExportMap(directiveIdx, def, exportsMap) {\n  if (exportsMap) {\n    if (def.exportAs) {\n      for (var i = 0; i < def.exportAs.length; i++) {\n        exportsMap[def.exportAs[i]] = directiveIdx;\n      }\n    }\n\n    if (isComponentDef(def)) exportsMap[''] = directiveIdx;\n  }\n}\n/**\n * Initializes the flags on the current node, setting all indices to the initial index,\n * the directive count to 0, and adding the isComponent flag.\n * @param index the initial index\n */\n\n\nfunction initTNodeFlags(tNode, index, numberOfDirectives) {\n  ngDevMode && assertNotEqual(numberOfDirectives, tNode.directiveEnd - tNode.directiveStart, 'Reached the max number of directives');\n  tNode.flags |= 1\n  /* isDirectiveHost */\n  ; // When the first directive is created on a node, save the index\n\n  tNode.directiveStart = index;\n  tNode.directiveEnd = index + numberOfDirectives;\n  tNode.providerIndexes = index;\n}\n/**\n * Setup directive for instantiation.\n *\n * We need to create a `NodeInjectorFactory` which is then inserted in both the `Blueprint` as well\n * as `LView`. `TView` gets the `DirectiveDef`.\n *\n * @param tView `TView`\n * @param tNode `TNode`\n * @param lView `LView`\n * @param directiveIndex Index where the directive will be stored in the Expando.\n * @param def `DirectiveDef`\n */\n\n\nfunction configureViewWithDirective(tView, tNode, lView, directiveIndex, def) {\n  ngDevMode && assertGreaterThanOrEqual(directiveIndex, HEADER_OFFSET, 'Must be in Expando section');\n  tView.data[directiveIndex] = def;\n  var directiveFactory = def.factory || (def.factory = getFactoryDef(def.type, true));\n  var nodeInjectorFactory = new NodeInjectorFactory(directiveFactory, isComponentDef(def), null);\n  tView.blueprint[directiveIndex] = nodeInjectorFactory;\n  lView[directiveIndex] = nodeInjectorFactory;\n  registerHostBindingOpCodes(tView, tNode, lView, directiveIndex, allocExpando(tView, lView, def.hostVars, NO_CHANGE), def);\n}\n\nfunction addComponentLogic(lView, hostTNode, def) {\n  var native = getNativeByTNode(hostTNode, lView);\n  var tView = getOrCreateTComponentView(def); // Only component views should be added to the view tree directly. Embedded views are\n  // accessed through their containers because they may be removed / re-added later.\n\n  var rendererFactory = lView[RENDERER_FACTORY];\n  var componentView = addToViewTree(lView, createLView(lView, tView, null, def.onPush ? 64\n  /* Dirty */\n  : 16\n  /* CheckAlways */\n  , native, hostTNode, rendererFactory, rendererFactory.createRenderer(native, def), null, null)); // Component view will always be created before any injected LContainers,\n  // so this is a regular element, wrap it with the component view\n\n  lView[hostTNode.index] = componentView;\n}\n\nfunction elementAttributeInternal(tNode, lView, name, value, sanitizer, namespace) {\n  if (ngDevMode) {\n    assertNotSame(value, NO_CHANGE, 'Incoming value should never be NO_CHANGE.');\n    validateAgainstEventAttributes(name);\n    assertTNodeType(tNode, 2\n    /* Element */\n    , \"Attempted to set attribute `\".concat(name, \"` on a container node. \") + \"Host bindings are not valid on ng-container or ng-template.\");\n  }\n\n  var element = getNativeByTNode(tNode, lView);\n  setElementAttribute(lView[RENDERER], element, namespace, tNode.value, name, value, sanitizer);\n}\n\nfunction setElementAttribute(renderer, element, namespace, tagName, name, value, sanitizer) {\n  if (value == null) {\n    ngDevMode && ngDevMode.rendererRemoveAttribute++;\n    isProceduralRenderer(renderer) ? renderer.removeAttribute(element, name, namespace) : element.removeAttribute(name);\n  } else {\n    ngDevMode && ngDevMode.rendererSetAttribute++;\n    var strValue = sanitizer == null ? renderStringify(value) : sanitizer(value, tagName || '', name);\n\n    if (isProceduralRenderer(renderer)) {\n      renderer.setAttribute(element, name, strValue, namespace);\n    } else {\n      namespace ? element.setAttributeNS(namespace, name, strValue) : element.setAttribute(name, strValue);\n    }\n  }\n}\n/**\n * Sets initial input properties on directive instances from attribute data\n *\n * @param lView Current LView that is being processed.\n * @param directiveIndex Index of the directive in directives array\n * @param instance Instance of the directive on which to set the initial inputs\n * @param def The directive def that contains the list of inputs\n * @param tNode The static data for this node\n */\n\n\nfunction setInputsFromAttrs(lView, directiveIndex, instance, def, tNode, initialInputData) {\n  var initialInputs = initialInputData[directiveIndex];\n\n  if (initialInputs !== null) {\n    var setInput = def.setInput;\n\n    for (var i = 0; i < initialInputs.length;) {\n      var publicName = initialInputs[i++];\n      var privateName = initialInputs[i++];\n      var value = initialInputs[i++];\n\n      if (setInput !== null) {\n        def.setInput(instance, value, publicName, privateName);\n      } else {\n        instance[privateName] = value;\n      }\n\n      if (ngDevMode) {\n        var nativeElement = getNativeByTNode(tNode, lView);\n        setNgReflectProperty(lView, nativeElement, tNode.type, privateName, value);\n      }\n    }\n  }\n}\n/**\n * Generates initialInputData for a node and stores it in the template's static storage\n * so subsequent template invocations don't have to recalculate it.\n *\n * initialInputData is an array containing values that need to be set as input properties\n * for directives on this node, but only once on creation. We need this array to support\n * the case where you set an @Input property of a directive using attribute-like syntax.\n * e.g. if you have a `name` @Input, you can set it once like this:\n *\n * <my-component name=\"Bess\"></my-component>\n *\n * @param inputs The list of inputs from the directive def\n * @param attrs The static attrs on this node\n */\n\n\nfunction generateInitialInputs(inputs, attrs) {\n  var inputsToStore = null;\n  var i = 0;\n\n  while (i < attrs.length) {\n    var attrName = attrs[i];\n\n    if (attrName === 0\n    /* NamespaceURI */\n    ) {\n      // We do not allow inputs on namespaced attributes.\n      i += 4;\n      continue;\n    } else if (attrName === 5\n    /* ProjectAs */\n    ) {\n      // Skip over the `ngProjectAs` value.\n      i += 2;\n      continue;\n    } // If we hit any other attribute markers, we're done anyway. None of those are valid inputs.\n\n\n    if (typeof attrName === 'number') break;\n\n    if (inputs.hasOwnProperty(attrName)) {\n      if (inputsToStore === null) inputsToStore = [];\n      inputsToStore.push(attrName, inputs[attrName], attrs[i + 1]);\n    }\n\n    i += 2;\n  }\n\n  return inputsToStore;\n} //////////////////////////\n//// ViewContainer & View\n//////////////////////////\n// Not sure why I need to do `any` here but TS complains later.\n\n\nvar LContainerArray = (typeof ngDevMode === 'undefined' || ngDevMode) && initNgDevMode() && createNamedArrayType('LContainer');\n/**\n * Creates a LContainer, either from a container instruction, or for a ViewContainerRef.\n *\n * @param hostNative The host element for the LContainer\n * @param hostTNode The host TNode for the LContainer\n * @param currentView The parent view of the LContainer\n * @param native The native comment element\n * @param isForViewContainerRef Optional a flag indicating the ViewContainerRef case\n * @returns LContainer\n */\n\nfunction createLContainer(hostNative, currentView, native, tNode) {\n  ngDevMode && assertLView(currentView);\n  ngDevMode && !isProceduralRenderer(currentView[RENDERER]) && assertDomNode(native); // https://jsperf.com/array-literal-vs-new-array-really\n\n  var lContainer = new (ngDevMode ? LContainerArray : Array)(hostNative, // host native\n  true, // Boolean `true` in this position signifies that this is an `LContainer`\n  false, // has transplanted views\n  currentView, // parent\n  null, // next\n  0, // transplanted views to refresh count\n  tNode, // t_host\n  native, // native,\n  null, // view refs\n  null);\n  ngDevMode && assertEqual(lContainer.length, CONTAINER_HEADER_OFFSET, 'Should allocate correct number of slots for LContainer header.');\n  ngDevMode && attachLContainerDebug(lContainer);\n  return lContainer;\n}\n/**\n * Goes over embedded views (ones created through ViewContainerRef APIs) and refreshes\n * them by executing an associated template function.\n */\n\n\nfunction refreshEmbeddedViews(lView) {\n  for (var lContainer = getFirstLContainer(lView); lContainer !== null; lContainer = getNextLContainer(lContainer)) {\n    for (var i = CONTAINER_HEADER_OFFSET; i < lContainer.length; i++) {\n      var embeddedLView = lContainer[i];\n      var embeddedTView = embeddedLView[TVIEW];\n      ngDevMode && assertDefined(embeddedTView, 'TView must be allocated');\n\n      if (viewAttachedToChangeDetector(embeddedLView)) {\n        refreshView(embeddedTView, embeddedLView, embeddedTView.template, embeddedLView[CONTEXT]);\n      }\n    }\n  }\n}\n/**\n * Mark transplanted views as needing to be refreshed at their insertion points.\n *\n * @param lView The `LView` that may have transplanted views.\n */\n\n\nfunction markTransplantedViewsForRefresh(lView) {\n  for (var lContainer = getFirstLContainer(lView); lContainer !== null; lContainer = getNextLContainer(lContainer)) {\n    if (!lContainer[HAS_TRANSPLANTED_VIEWS]) continue;\n    var movedViews = lContainer[MOVED_VIEWS];\n    ngDevMode && assertDefined(movedViews, 'Transplanted View flags set but missing MOVED_VIEWS');\n\n    for (var i = 0; i < movedViews.length; i++) {\n      var movedLView = movedViews[i];\n      var insertionLContainer = movedLView[PARENT];\n      ngDevMode && assertLContainer(insertionLContainer); // We don't want to increment the counter if the moved LView was already marked for\n      // refresh.\n\n      if ((movedLView[FLAGS] & 1024\n      /* RefreshTransplantedView */\n      ) === 0) {\n        updateTransplantedViewCount(insertionLContainer, 1);\n      } // Note, it is possible that the `movedViews` is tracking views that are transplanted *and*\n      // those that aren't (declaration component === insertion component). In the latter case,\n      // it's fine to add the flag, as we will clear it immediately in\n      // `refreshEmbeddedViews` for the view currently being refreshed.\n\n\n      movedLView[FLAGS] |= 1024\n      /* RefreshTransplantedView */\n      ;\n    }\n  }\n} /////////////\n\n/**\n * Refreshes components by entering the component view and processing its bindings, queries, etc.\n *\n * @param componentHostIdx  Element index in LView[] (adjusted for HEADER_OFFSET)\n */\n\n\nfunction refreshComponent(hostLView, componentHostIdx) {\n  ngDevMode && assertEqual(isCreationMode(hostLView), false, 'Should be run in update mode');\n  var componentView = getComponentLViewByIndex(componentHostIdx, hostLView); // Only attached components that are CheckAlways or OnPush and dirty should be refreshed\n\n  if (viewAttachedToChangeDetector(componentView)) {\n    var tView = componentView[TVIEW];\n\n    if (componentView[FLAGS] & (16\n    /* CheckAlways */\n    | 64\n    /* Dirty */\n    )) {\n      refreshView(tView, componentView, tView.template, componentView[CONTEXT]);\n    } else if (componentView[TRANSPLANTED_VIEWS_TO_REFRESH] > 0) {\n      // Only attached components that are CheckAlways or OnPush and dirty should be refreshed\n      refreshContainsDirtyView(componentView);\n    }\n  }\n}\n/**\n * Refreshes all transplanted views marked with `LViewFlags.RefreshTransplantedView` that are\n * children or descendants of the given lView.\n *\n * @param lView The lView which contains descendant transplanted views that need to be refreshed.\n */\n\n\nfunction refreshContainsDirtyView(lView) {\n  for (var lContainer = getFirstLContainer(lView); lContainer !== null; lContainer = getNextLContainer(lContainer)) {\n    for (var i = CONTAINER_HEADER_OFFSET; i < lContainer.length; i++) {\n      var embeddedLView = lContainer[i];\n\n      if (embeddedLView[FLAGS] & 1024\n      /* RefreshTransplantedView */\n      ) {\n        var embeddedTView = embeddedLView[TVIEW];\n        ngDevMode && assertDefined(embeddedTView, 'TView must be allocated');\n        refreshView(embeddedTView, embeddedLView, embeddedTView.template, embeddedLView[CONTEXT]);\n      } else if (embeddedLView[TRANSPLANTED_VIEWS_TO_REFRESH] > 0) {\n        refreshContainsDirtyView(embeddedLView);\n      }\n    }\n  }\n\n  var tView = lView[TVIEW]; // Refresh child component views.\n\n  var components = tView.components;\n\n  if (components !== null) {\n    for (var _i4 = 0; _i4 < components.length; _i4++) {\n      var componentView = getComponentLViewByIndex(components[_i4], lView); // Only attached components that are CheckAlways or OnPush and dirty should be refreshed\n\n      if (viewAttachedToChangeDetector(componentView) && componentView[TRANSPLANTED_VIEWS_TO_REFRESH] > 0) {\n        refreshContainsDirtyView(componentView);\n      }\n    }\n  }\n}\n\nfunction renderComponent(hostLView, componentHostIdx) {\n  ngDevMode && assertEqual(isCreationMode(hostLView), true, 'Should be run in creation mode');\n  var componentView = getComponentLViewByIndex(componentHostIdx, hostLView);\n  var componentTView = componentView[TVIEW];\n  syncViewWithBlueprint(componentTView, componentView);\n  renderView(componentTView, componentView, componentView[CONTEXT]);\n}\n/**\n * Syncs an LView instance with its blueprint if they have gotten out of sync.\n *\n * Typically, blueprints and their view instances should always be in sync, so the loop here\n * will be skipped. However, consider this case of two components side-by-side:\n *\n * App template:\n * ```\n * <comp></comp>\n * <comp></comp>\n * ```\n *\n * The following will happen:\n * 1. App template begins processing.\n * 2. First <comp> is matched as a component and its LView is created.\n * 3. Second <comp> is matched as a component and its LView is created.\n * 4. App template completes processing, so it's time to check child templates.\n * 5. First <comp> template is checked. It has a directive, so its def is pushed to blueprint.\n * 6. Second <comp> template is checked. Its blueprint has been updated by the first\n * <comp> template, but its LView was created before this update, so it is out of sync.\n *\n * Note that embedded views inside ngFor loops will never be out of sync because these views\n * are processed as soon as they are created.\n *\n * @param tView The `TView` that contains the blueprint for syncing\n * @param lView The view to sync\n */\n\n\nfunction syncViewWithBlueprint(tView, lView) {\n  for (var i = lView.length; i < tView.blueprint.length; i++) {\n    lView.push(tView.blueprint[i]);\n  }\n}\n/**\n * Adds LView or LContainer to the end of the current view tree.\n *\n * This structure will be used to traverse through nested views to remove listeners\n * and call onDestroy callbacks.\n *\n * @param lView The view where LView or LContainer should be added\n * @param adjustedHostIndex Index of the view's host node in LView[], adjusted for header\n * @param lViewOrLContainer The LView or LContainer to add to the view tree\n * @returns The state passed in\n */\n\n\nfunction addToViewTree(lView, lViewOrLContainer) {\n  // TODO(benlesh/misko): This implementation is incorrect, because it always adds the LContainer\n  // to the end of the queue, which means if the developer retrieves the LContainers from RNodes out\n  // of order, the change detection will run out of order, as the act of retrieving the the\n  // LContainer from the RNode is what adds it to the queue.\n  if (lView[CHILD_HEAD]) {\n    lView[CHILD_TAIL][NEXT] = lViewOrLContainer;\n  } else {\n    lView[CHILD_HEAD] = lViewOrLContainer;\n  }\n\n  lView[CHILD_TAIL] = lViewOrLContainer;\n  return lViewOrLContainer;\n} ///////////////////////////////\n//// Change detection\n///////////////////////////////\n\n/**\n * Marks current view and all ancestors dirty.\n *\n * Returns the root view because it is found as a byproduct of marking the view tree\n * dirty, and can be used by methods that consume markViewDirty() to easily schedule\n * change detection. Otherwise, such methods would need to traverse up the view tree\n * an additional time to get the root view and schedule a tick on it.\n *\n * @param lView The starting LView to mark dirty\n * @returns the root LView\n */\n\n\nfunction markViewDirty(lView) {\n  while (lView) {\n    lView[FLAGS] |= 64\n    /* Dirty */\n    ;\n    var parent = getLViewParent(lView); // Stop traversing up as soon as you find a root view that wasn't attached to any container\n\n    if (isRootView(lView) && !parent) {\n      return lView;\n    } // continue otherwise\n\n\n    lView = parent;\n  }\n\n  return null;\n}\n/**\n * Used to schedule change detection on the whole application.\n *\n * Unlike `tick`, `scheduleTick` coalesces multiple calls into one change detection run.\n * It is usually called indirectly by calling `markDirty` when the view needs to be\n * re-rendered.\n *\n * Typically `scheduleTick` uses `requestAnimationFrame` to coalesce multiple\n * `scheduleTick` requests. The scheduling function can be overridden in\n * `renderComponent`'s `scheduler` option.\n */\n\n\nfunction scheduleTick(rootContext, flags) {\n  var nothingScheduled = rootContext.flags === 0\n  /* Empty */\n  ;\n\n  if (nothingScheduled && rootContext.clean == _CLEAN_PROMISE) {\n    // https://github.com/angular/angular/issues/39296\n    // should only attach the flags when really scheduling a tick\n    rootContext.flags |= flags;\n    var res;\n    rootContext.clean = new Promise(function (r) {\n      return res = r;\n    });\n    rootContext.scheduler(function () {\n      if (rootContext.flags & 1\n      /* DetectChanges */\n      ) {\n        rootContext.flags &= ~1\n        /* DetectChanges */\n        ;\n        tickRootContext(rootContext);\n      }\n\n      if (rootContext.flags & 2\n      /* FlushPlayers */\n      ) {\n        rootContext.flags &= ~2\n        /* FlushPlayers */\n        ;\n        var playerHandler = rootContext.playerHandler;\n\n        if (playerHandler) {\n          playerHandler.flushPlayers();\n        }\n      }\n\n      rootContext.clean = _CLEAN_PROMISE;\n      res(null);\n    });\n  }\n}\n\nfunction tickRootContext(rootContext) {\n  for (var i = 0; i < rootContext.components.length; i++) {\n    var rootComponent = rootContext.components[i];\n    var lView = readPatchedLView(rootComponent);\n    var tView = lView[TVIEW];\n    renderComponentOrTemplate(tView, lView, tView.template, rootComponent);\n  }\n}\n\nfunction detectChangesInternal(tView, lView, context) {\n  var rendererFactory = lView[RENDERER_FACTORY];\n  if (rendererFactory.begin) rendererFactory.begin();\n\n  try {\n    refreshView(tView, lView, tView.template, context);\n  } catch (error) {\n    handleError(lView, error);\n    throw error;\n  } finally {\n    if (rendererFactory.end) rendererFactory.end();\n  }\n}\n/**\n * Synchronously perform change detection on a root view and its components.\n *\n * @param lView The view which the change detection should be performed on.\n */\n\n\nfunction detectChangesInRootView(lView) {\n  tickRootContext(lView[CONTEXT]);\n}\n\nfunction checkNoChangesInternal(tView, view, context) {\n  setIsInCheckNoChangesMode(true);\n\n  try {\n    detectChangesInternal(tView, view, context);\n  } finally {\n    setIsInCheckNoChangesMode(false);\n  }\n}\n/**\n * Checks the change detector on a root view and its components, and throws if any changes are\n * detected.\n *\n * This is used in development mode to verify that running change detection doesn't\n * introduce other changes.\n *\n * @param lView The view which the change detection should be checked on.\n */\n\n\nfunction checkNoChangesInRootView(lView) {\n  setIsInCheckNoChangesMode(true);\n\n  try {\n    detectChangesInRootView(lView);\n  } finally {\n    setIsInCheckNoChangesMode(false);\n  }\n}\n\nfunction executeViewQueryFn(flags, viewQueryFn, component) {\n  ngDevMode && assertDefined(viewQueryFn, 'View queries function to execute must be defined.');\n  setCurrentQueryIndex(0);\n  viewQueryFn(flags, component);\n} ///////////////////////////////\n//// Bindings & interpolations\n///////////////////////////////\n\n/**\n * Stores meta-data for a property binding to be used by TestBed's `DebugElement.properties`.\n *\n * In order to support TestBed's `DebugElement.properties` we need to save, for each binding:\n * - a bound property name;\n * - a static parts of interpolated strings;\n *\n * A given property metadata is saved at the binding's index in the `TView.data` (in other words, a\n * property binding metadata will be stored in `TView.data` at the same index as a bound value in\n * `LView`). Metadata are represented as `INTERPOLATION_DELIMITER`-delimited string with the\n * following format:\n * - `propertyName` for bound properties;\n * - `propertyName�prefix�interpolation_static_part1�..interpolation_static_partN�suffix` for\n * interpolated properties.\n *\n * @param tData `TData` where meta-data will be saved;\n * @param tNode `TNode` that is a target of the binding;\n * @param propertyName bound property name;\n * @param bindingIndex binding index in `LView`\n * @param interpolationParts static interpolation parts (for property interpolations)\n */\n\n\nfunction storePropertyBindingMetadata(tData, tNode, propertyName, bindingIndex) {\n  // Binding meta-data are stored only the first time a given property instruction is processed.\n  // Since we don't have a concept of the \"first update pass\" we need to check for presence of the\n  // binding meta-data to decide if one should be stored (or if was stored already).\n  if (tData[bindingIndex] === null) {\n    if (tNode.inputs == null || !tNode.inputs[propertyName]) {\n      var propBindingIdxs = tNode.propertyBindings || (tNode.propertyBindings = []);\n      propBindingIdxs.push(bindingIndex);\n      var bindingMetadata = propertyName;\n\n      for (var _len10 = arguments.length, interpolationParts = new Array(_len10 > 4 ? _len10 - 4 : 0), _key10 = 4; _key10 < _len10; _key10++) {\n        interpolationParts[_key10 - 4] = arguments[_key10];\n      }\n\n      if (interpolationParts.length > 0) {\n        bindingMetadata += INTERPOLATION_DELIMITER + interpolationParts.join(INTERPOLATION_DELIMITER);\n      }\n\n      tData[bindingIndex] = bindingMetadata;\n    }\n  }\n}\n\nvar CLEAN_PROMISE = _CLEAN_PROMISE;\n\nfunction getLCleanup(view) {\n  // top level variables should not be exported for performance reasons (PERF_NOTES.md)\n  return view[CLEANUP] || (view[CLEANUP] = ngDevMode ? new LCleanup() : []);\n}\n\nfunction getTViewCleanup(tView) {\n  return tView.cleanup || (tView.cleanup = ngDevMode ? new TCleanup() : []);\n}\n/**\n * There are cases where the sub component's renderer needs to be included\n * instead of the current renderer (see the componentSyntheticHost* instructions).\n */\n\n\nfunction loadComponentRenderer(currentDef, tNode, lView) {\n  // TODO(FW-2043): the `currentDef` is null when host bindings are invoked while creating root\n  // component (see packages/core/src/render3/component.ts). This is not consistent with the process\n  // of creating inner components, when current directive index is available in the state. In order\n  // to avoid relying on current def being `null` (thus special-casing root component creation), the\n  // process of creating root component should be unified with the process of creating inner\n  // components.\n  if (currentDef === null || isComponentDef(currentDef)) {\n    lView = unwrapLView(lView[tNode.index]);\n  }\n\n  return lView[RENDERER];\n}\n/** Handles an error thrown in an LView. */\n\n\nfunction handleError(lView, error) {\n  var injector = lView[INJECTOR];\n  var errorHandler = injector ? injector.get(ErrorHandler, null) : null;\n  errorHandler && errorHandler.handleError(error);\n}\n/**\n * Set the inputs of directives at the current node to corresponding value.\n *\n * @param tView The current TView\n * @param lView the `LView` which contains the directives.\n * @param inputs mapping between the public \"input\" name and privately-known,\n *        possibly minified, property names to write to.\n * @param value Value to set.\n */\n\n\nfunction setInputsForProperty(tView, lView, inputs, publicName, value) {\n  for (var i = 0; i < inputs.length;) {\n    var index = inputs[i++];\n    var privateName = inputs[i++];\n    var instance = lView[index];\n    ngDevMode && assertIndexInRange(lView, index);\n    var def = tView.data[index];\n\n    if (def.setInput !== null) {\n      def.setInput(instance, value, publicName, privateName);\n    } else {\n      instance[privateName] = value;\n    }\n  }\n}\n/**\n * Updates a text binding at a given index in a given LView.\n */\n\n\nfunction textBindingInternal(lView, index, value) {\n  ngDevMode && assertString(value, 'Value should be a string');\n  ngDevMode && assertNotSame(value, NO_CHANGE, 'value should not be NO_CHANGE');\n  ngDevMode && assertIndexInRange(lView, index);\n  var element = getNativeByIndex(index, lView);\n  ngDevMode && assertDefined(element, 'native element should exist');\n  updateTextNode(lView[RENDERER], element, value);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Compute the static styling (class/style) from `TAttributes`.\n *\n * This function should be called during `firstCreatePass` only.\n *\n * @param tNode The `TNode` into which the styling information should be loaded.\n * @param attrs `TAttributes` containing the styling information.\n * @param writeToHost Where should the resulting static styles be written?\n *   - `false` Write to `TNode.stylesWithoutHost` / `TNode.classesWithoutHost`\n *   - `true` Write to `TNode.styles` / `TNode.classes`\n */\n\n\nfunction computeStaticStyling(tNode, attrs, writeToHost) {\n  ngDevMode && assertFirstCreatePass(getTView(), 'Expecting to be called in first template pass only');\n  var styles = writeToHost ? tNode.styles : null;\n  var classes = writeToHost ? tNode.classes : null;\n  var mode = 0;\n\n  if (attrs !== null) {\n    for (var i = 0; i < attrs.length; i++) {\n      var value = attrs[i];\n\n      if (typeof value === 'number') {\n        mode = value;\n      } else if (mode == 1\n      /* Classes */\n      ) {\n        classes = concatStringsWithSpace(classes, value);\n      } else if (mode == 2\n      /* Styles */\n      ) {\n        var style = value;\n        var styleValue = attrs[++i];\n        styles = concatStringsWithSpace(styles, style + ': ' + styleValue + ';');\n      }\n    }\n  }\n\n  writeToHost ? tNode.styles = styles : tNode.stylesWithoutHost = styles;\n  writeToHost ? tNode.classes = classes : tNode.classesWithoutHost = classes;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Synchronously perform change detection on a component (and possibly its sub-components).\n *\n * This function triggers change detection in a synchronous way on a component.\n *\n * @param component The component which the change detection should be performed on.\n */\n\n\nfunction detectChanges(component) {\n  var view = getComponentViewByInstance(component);\n  detectChangesInternal(view[TVIEW], view, component);\n}\n/**\n * Marks the component as dirty (needing change detection). Marking a component dirty will\n * schedule a change detection on it at some point in the future.\n *\n * Marking an already dirty component as dirty won't do anything. Only one outstanding change\n * detection can be scheduled per component tree.\n *\n * @param component Component to mark as dirty.\n */\n\n\nfunction markDirty(component) {\n  ngDevMode && assertDefined(component, 'component');\n  var rootView = markViewDirty(getComponentViewByInstance(component));\n  ngDevMode && assertDefined(rootView[CONTEXT], 'rootContext should be defined');\n  scheduleTick(rootView[CONTEXT], 1\n  /* DetectChanges */\n  );\n}\n/**\n * Used to perform change detection on the whole application.\n *\n * This is equivalent to `detectChanges`, but invoked on root component. Additionally, `tick`\n * executes lifecycle hooks and conditionally checks components based on their\n * `ChangeDetectionStrategy` and dirtiness.\n *\n * The preferred way to trigger change detection is to call `markDirty`. `markDirty` internally\n * schedules `tick` using a scheduler in order to coalesce multiple `markDirty` calls into a\n * single change detection run. By default, the scheduler is `requestAnimationFrame`, but can\n * be changed when calling `renderComponent` and providing the `scheduler` option.\n */\n\n\nfunction tick(component) {\n  var rootView = getRootView(component);\n  var rootContext = rootView[CONTEXT];\n  tickRootContext(rootContext);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * An InjectionToken that gets the current `Injector` for `createInjector()`-style injectors.\n *\n * Requesting this token instead of `Injector` allows `StaticInjector` to be tree-shaken from a\n * project.\n *\n * @publicApi\n */\n\n\nvar INJECTOR$1 = new InjectionToken('INJECTOR', // Dissable tslint because this is const enum which gets inlined not top level prop access.\n// tslint:disable-next-line: no-toplevel-property-access\n-1\n/* Injector */\n);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar NullInjector = /*#__PURE__*/function () {\n  function NullInjector() {\n    _classCallCheck(this, NullInjector);\n  }\n\n  _createClass2(NullInjector, [{\n    key: \"get\",\n    value: function get(token) {\n      var notFoundValue = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : THROW_IF_NOT_FOUND;\n\n      if (notFoundValue === THROW_IF_NOT_FOUND) {\n        var error = new Error(\"NullInjectorError: No provider for \".concat(stringify(token), \"!\"));\n        error.name = 'NullInjectorError';\n        throw error;\n      }\n\n      return notFoundValue;\n    }\n  }]);\n\n  return NullInjector;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * An internal token whose presence in an injector indicates that the injector should treat itself\n * as a root scoped injector when processing requests for unknown tokens which may indicate\n * they are provided in the root scope.\n */\n\n\nvar INJECTOR_SCOPE = new InjectionToken('Set Injector scope.');\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Marker which indicates that a value has not yet been created from the factory function.\n */\n\nvar NOT_YET = {};\n/**\n * Marker which indicates that the factory function for a token is in the process of being called.\n *\n * If the injector is asked to inject a token with its value set to CIRCULAR, that indicates\n * injection of a dependency has recursively attempted to inject the original token, and there is\n * a circular dependency among the providers.\n */\n\nvar CIRCULAR = {};\nvar EMPTY_ARRAY$1 = [];\n/**\n * A lazily initialized NullInjector.\n */\n\nvar NULL_INJECTOR = undefined;\n\nfunction getNullInjector() {\n  if (NULL_INJECTOR === undefined) {\n    NULL_INJECTOR = new NullInjector();\n  }\n\n  return NULL_INJECTOR;\n}\n/**\n * Create a new `Injector` which is configured using a `defType` of `InjectorType<any>`s.\n *\n * @publicApi\n */\n\n\nfunction createInjector(defType) {\n  var parent = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n  var additionalProviders = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;\n  var name = arguments.length > 3 ? arguments[3] : undefined;\n  var injector = createInjectorWithoutInjectorInstances(defType, parent, additionalProviders, name);\n\n  injector._resolveInjectorDefTypes();\n\n  return injector;\n}\n/**\n * Creates a new injector without eagerly resolving its injector types. Can be used in places\n * where resolving the injector types immediately can lead to an infinite loop. The injector types\n * should be resolved at a later point by calling `_resolveInjectorDefTypes`.\n */\n\n\nfunction createInjectorWithoutInjectorInstances(defType) {\n  var parent = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n  var additionalProviders = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;\n  var name = arguments.length > 3 ? arguments[3] : undefined;\n  return new R3Injector(defType, additionalProviders, parent || getNullInjector(), name);\n}\n\nvar R3Injector = /*#__PURE__*/function () {\n  function R3Injector(def, additionalProviders, parent) {\n    var _this2 = this;\n\n    var source = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;\n\n    _classCallCheck(this, R3Injector);\n\n    this.parent = parent;\n    /**\n     * Map of tokens to records which contain the instances of those tokens.\n     * - `null` value implies that we don't have the record. Used by tree-shakable injectors\n     * to prevent further searches.\n     */\n\n    this.records = new Map();\n    /**\n     * The transitive set of `InjectorType`s which define this injector.\n     */\n\n    this.injectorDefTypes = new Set();\n    /**\n     * Set of values instantiated by this injector which contain `ngOnDestroy` lifecycle hooks.\n     */\n\n    this.onDestroy = new Set();\n    this._destroyed = false;\n    var dedupStack = []; // Start off by creating Records for every provider declared in every InjectorType\n    // included transitively in additional providers then do the same for `def`. This order is\n    // important because `def` may include providers that override ones in additionalProviders.\n\n    additionalProviders && deepForEach(additionalProviders, function (provider) {\n      return _this2.processProvider(provider, def, additionalProviders);\n    });\n    deepForEach([def], function (injectorDef) {\n      return _this2.processInjectorType(injectorDef, [], dedupStack);\n    }); // Make sure the INJECTOR token provides this injector.\n\n    this.records.set(INJECTOR$1, makeRecord(undefined, this)); // Detect whether this injector has the APP_ROOT_SCOPE token and thus should provide\n    // any injectable scoped to APP_ROOT_SCOPE.\n\n    var record = this.records.get(INJECTOR_SCOPE);\n    this.scope = record != null ? record.value : null; // Source name, used for debugging\n\n    this.source = source || (_typeof(def) === 'object' ? null : stringify(def));\n  }\n  /**\n   * Flag indicating that this injector was previously destroyed.\n   */\n\n\n  _createClass2(R3Injector, [{\n    key: \"destroyed\",\n    get: function get() {\n      return this._destroyed;\n    }\n    /**\n     * Destroy the injector and release references to every instance or provider associated with it.\n     *\n     * Also calls the `OnDestroy` lifecycle hooks of every instance that was created for which a\n     * hook was found.\n     */\n\n  }, {\n    key: \"destroy\",\n    value: function destroy() {\n      this.assertNotDestroyed(); // Set destroyed = true first, in case lifecycle hooks re-enter destroy().\n\n      this._destroyed = true;\n\n      try {\n        // Call all the lifecycle hooks.\n        this.onDestroy.forEach(function (service) {\n          return service.ngOnDestroy();\n        });\n      } finally {\n        // Release all references.\n        this.records.clear();\n        this.onDestroy.clear();\n        this.injectorDefTypes.clear();\n      }\n    }\n  }, {\n    key: \"get\",\n    value: function get(token) {\n      var notFoundValue = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : THROW_IF_NOT_FOUND;\n      var flags = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : InjectFlags.Default;\n      this.assertNotDestroyed(); // Set the injection context.\n\n      var previousInjector = setCurrentInjector(this);\n\n      try {\n        // Check for the SkipSelf flag.\n        if (!(flags & InjectFlags.SkipSelf)) {\n          // SkipSelf isn't set, check if the record belongs to this injector.\n          var record = this.records.get(token);\n\n          if (record === undefined) {\n            // No record, but maybe the token is scoped to this injector. Look for an injectable\n            // def with a scope matching this injector.\n            var def = couldBeInjectableType(token) && getInjectableDef(token);\n\n            if (def && this.injectableDefInScope(def)) {\n              // Found an injectable def and it's scoped to this injector. Pretend as if it was here\n              // all along.\n              record = makeRecord(injectableDefOrInjectorDefFactory(token), NOT_YET);\n            } else {\n              record = null;\n            }\n\n            this.records.set(token, record);\n          } // If a record was found, get the instance for it and return it.\n\n\n          if (record != null\n          /* NOT null || undefined */\n          ) {\n            return this.hydrate(token, record);\n          }\n        } // Select the next injector based on the Self flag - if self is set, the next injector is\n        // the NullInjector, otherwise it's the parent.\n\n\n        var nextInjector = !(flags & InjectFlags.Self) ? this.parent : getNullInjector(); // Set the notFoundValue based on the Optional flag - if optional is set and notFoundValue\n        // is undefined, the value is null, otherwise it's the notFoundValue.\n\n        notFoundValue = flags & InjectFlags.Optional && notFoundValue === THROW_IF_NOT_FOUND ? null : notFoundValue;\n        return nextInjector.get(token, notFoundValue);\n      } catch (e) {\n        if (e.name === 'NullInjectorError') {\n          var path = e[NG_TEMP_TOKEN_PATH] = e[NG_TEMP_TOKEN_PATH] || [];\n          path.unshift(stringify(token));\n\n          if (previousInjector) {\n            // We still have a parent injector, keep throwing\n            throw e;\n          } else {\n            // Format & throw the final error message when we don't have any previous injector\n            return catchInjectorError(e, token, 'R3InjectorError', this.source);\n          }\n        } else {\n          throw e;\n        }\n      } finally {\n        // Lastly, clean up the state by restoring the previous injector.\n        setCurrentInjector(previousInjector);\n      }\n    }\n    /** @internal */\n\n  }, {\n    key: \"_resolveInjectorDefTypes\",\n    value: function _resolveInjectorDefTypes() {\n      var _this3 = this;\n\n      this.injectorDefTypes.forEach(function (defType) {\n        return _this3.get(defType);\n      });\n    }\n  }, {\n    key: \"toString\",\n    value: function toString() {\n      var tokens = [],\n          records = this.records;\n      records.forEach(function (v, token) {\n        return tokens.push(stringify(token));\n      });\n      return \"R3Injector[\".concat(tokens.join(', '), \"]\");\n    }\n  }, {\n    key: \"assertNotDestroyed\",\n    value: function assertNotDestroyed() {\n      if (this._destroyed) {\n        throw new Error('Injector has already been destroyed.');\n      }\n    }\n    /**\n     * Add an `InjectorType` or `InjectorTypeWithProviders` and all of its transitive providers\n     * to this injector.\n     *\n     * If an `InjectorTypeWithProviders` that declares providers besides the type is specified,\n     * the function will return \"true\" to indicate that the providers of the type definition need\n     * to be processed. This allows us to process providers of injector types after all imports of\n     * an injector definition are processed. (following View Engine semantics: see FW-1349)\n     */\n\n  }, {\n    key: \"processInjectorType\",\n    value: function processInjectorType(defOrWrappedDef, parents, dedupStack) {\n      var _this4 = this;\n\n      defOrWrappedDef = resolveForwardRef(defOrWrappedDef);\n      if (!defOrWrappedDef) return false; // Either the defOrWrappedDef is an InjectorType (with injector def) or an\n      // InjectorDefTypeWithProviders (aka ModuleWithProviders). Detecting either is a megamorphic\n      // read, so care is taken to only do the read once.\n      // First attempt to read the injector def (`ɵinj`).\n\n      var def = getInjectorDef(defOrWrappedDef); // If that's not present, then attempt to read ngModule from the InjectorDefTypeWithProviders.\n\n      var ngModule = def == null && defOrWrappedDef.ngModule || undefined; // Determine the InjectorType. In the case where `defOrWrappedDef` is an `InjectorType`,\n      // then this is easy. In the case of an InjectorDefTypeWithProviders, then the definition type\n      // is the `ngModule`.\n\n      var defType = ngModule === undefined ? defOrWrappedDef : ngModule; // Check for circular dependencies.\n\n      if (ngDevMode && parents.indexOf(defType) !== -1) {\n        var defName = stringify(defType);\n        var path = parents.map(stringify);\n        throwCyclicDependencyError(defName, path);\n      } // Check for multiple imports of the same module\n\n\n      var isDuplicate = dedupStack.indexOf(defType) !== -1; // Finally, if defOrWrappedType was an `InjectorDefTypeWithProviders`, then the actual\n      // `InjectorDef` is on its `ngModule`.\n\n      if (ngModule !== undefined) {\n        def = getInjectorDef(ngModule);\n      } // If no definition was found, it might be from exports. Remove it.\n\n\n      if (def == null) {\n        return false;\n      } // Add providers in the same way that @NgModule resolution did:\n      // First, include providers from any imports.\n\n\n      if (def.imports != null && !isDuplicate) {\n        // Before processing defType's imports, add it to the set of parents. This way, if it ends\n        // up deeply importing itself, this can be detected.\n        ngDevMode && parents.push(defType); // Add it to the set of dedups. This way we can detect multiple imports of the same module\n\n        dedupStack.push(defType);\n        var importTypesWithProviders;\n\n        try {\n          deepForEach(def.imports, function (imported) {\n            if (_this4.processInjectorType(imported, parents, dedupStack)) {\n              if (importTypesWithProviders === undefined) importTypesWithProviders = []; // If the processed import is an injector type with providers, we store it in the\n              // list of import types with providers, so that we can process those afterwards.\n\n              importTypesWithProviders.push(imported);\n            }\n          });\n        } finally {\n          // Remove it from the parents set when finished.\n          ngDevMode && parents.pop();\n        } // Imports which are declared with providers (TypeWithProviders) need to be processed\n        // after all imported modules are processed. This is similar to how View Engine\n        // processes/merges module imports in the metadata resolver. See: FW-1349.\n\n\n        if (importTypesWithProviders !== undefined) {\n          var _loop = function _loop(i) {\n            var _importTypesWithProvi = importTypesWithProviders[i],\n                ngModule = _importTypesWithProvi.ngModule,\n                providers = _importTypesWithProvi.providers;\n            deepForEach(providers, function (provider) {\n              return _this4.processProvider(provider, ngModule, providers || EMPTY_ARRAY$1);\n            });\n          };\n\n          for (var i = 0; i < importTypesWithProviders.length; i++) {\n            _loop(i);\n          }\n        }\n      } // Track the InjectorType and add a provider for it. It's important that this is done after the\n      // def's imports.\n\n\n      this.injectorDefTypes.add(defType);\n      this.records.set(defType, makeRecord(def.factory, NOT_YET)); // Next, include providers listed on the definition itself.\n\n      var defProviders = def.providers;\n\n      if (defProviders != null && !isDuplicate) {\n        var injectorType = defOrWrappedDef;\n        deepForEach(defProviders, function (provider) {\n          return _this4.processProvider(provider, injectorType, defProviders);\n        });\n      }\n\n      return ngModule !== undefined && defOrWrappedDef.providers !== undefined;\n    }\n    /**\n     * Process a `SingleProvider` and add it.\n     */\n\n  }, {\n    key: \"processProvider\",\n    value: function processProvider(provider, ngModuleType, providers) {\n      // Determine the token from the provider. Either it's its own token, or has a {provide: ...}\n      // property.\n      provider = resolveForwardRef(provider);\n      var token = isTypeProvider(provider) ? provider : resolveForwardRef(provider && provider.provide); // Construct a `Record` for the provider.\n\n      var record = providerToRecord(provider, ngModuleType, providers);\n\n      if (!isTypeProvider(provider) && provider.multi === true) {\n        // If the provider indicates that it's a multi-provider, process it specially.\n        // First check whether it's been defined already.\n        var multiRecord = this.records.get(token);\n\n        if (multiRecord) {\n          // It has. Throw a nice error if\n          if (ngDevMode && multiRecord.multi === undefined) {\n            throwMixedMultiProviderError();\n          }\n        } else {\n          multiRecord = makeRecord(undefined, NOT_YET, true);\n\n          multiRecord.factory = function () {\n            return injectArgs(multiRecord.multi);\n          };\n\n          this.records.set(token, multiRecord);\n        }\n\n        token = provider;\n        multiRecord.multi.push(provider);\n      } else {\n        var existing = this.records.get(token);\n\n        if (ngDevMode && existing && existing.multi !== undefined) {\n          throwMixedMultiProviderError();\n        }\n      }\n\n      this.records.set(token, record);\n    }\n  }, {\n    key: \"hydrate\",\n    value: function hydrate(token, record) {\n      if (ngDevMode && record.value === CIRCULAR) {\n        throwCyclicDependencyError(stringify(token));\n      } else if (record.value === NOT_YET) {\n        record.value = CIRCULAR;\n        record.value = record.factory();\n      }\n\n      if (_typeof(record.value) === 'object' && record.value && hasOnDestroy(record.value)) {\n        this.onDestroy.add(record.value);\n      }\n\n      return record.value;\n    }\n  }, {\n    key: \"injectableDefInScope\",\n    value: function injectableDefInScope(def) {\n      if (!def.providedIn) {\n        return false;\n      } else if (typeof def.providedIn === 'string') {\n        return def.providedIn === 'any' || def.providedIn === this.scope;\n      } else {\n        return this.injectorDefTypes.has(def.providedIn);\n      }\n    }\n  }]);\n\n  return R3Injector;\n}();\n\nfunction injectableDefOrInjectorDefFactory(token) {\n  // Most tokens will have an injectable def directly on them, which specifies a factory directly.\n  var injectableDef = getInjectableDef(token);\n  var factory = injectableDef !== null ? injectableDef.factory : getFactoryDef(token);\n\n  if (factory !== null) {\n    return factory;\n  } // If the token is an NgModule, it's also injectable but the factory is on its injector def\n  // (`ɵinj`)\n\n\n  var injectorDef = getInjectorDef(token);\n\n  if (injectorDef !== null) {\n    return injectorDef.factory;\n  } // InjectionTokens should have an injectable def (ɵprov) and thus should be handled above.\n  // If it's missing that, it's an error.\n\n\n  if (token instanceof InjectionToken) {\n    throw new Error(\"Token \".concat(stringify(token), \" is missing a \\u0275prov definition.\"));\n  } // Undecorated types can sometimes be created if they have no constructor arguments.\n\n\n  if (token instanceof Function) {\n    return getUndecoratedInjectableFactory(token);\n  } // There was no way to resolve a factory for this token.\n\n\n  throw new Error('unreachable');\n}\n\nfunction getUndecoratedInjectableFactory(token) {\n  // If the token has parameters then it has dependencies that we cannot resolve implicitly.\n  var paramLength = token.length;\n\n  if (paramLength > 0) {\n    var args = newArray(paramLength, '?');\n    throw new Error(\"Can't resolve all parameters for \".concat(stringify(token), \": (\").concat(args.join(', '), \").\"));\n  } // The constructor function appears to have no parameters.\n  // This might be because it inherits from a super-class. In which case, use an injectable\n  // def from an ancestor if there is one.\n  // Otherwise this really is a simple class with no dependencies, so return a factory that\n  // just instantiates the zero-arg constructor.\n\n\n  var inheritedInjectableDef = getInheritedInjectableDef(token);\n\n  if (inheritedInjectableDef !== null) {\n    return function () {\n      return inheritedInjectableDef.factory(token);\n    };\n  } else {\n    return function () {\n      return new token();\n    };\n  }\n}\n\nfunction providerToRecord(provider, ngModuleType, providers) {\n  if (isValueProvider(provider)) {\n    return makeRecord(undefined, provider.useValue);\n  } else {\n    var factory = providerToFactory(provider, ngModuleType, providers);\n    return makeRecord(factory, NOT_YET);\n  }\n}\n/**\n * Converts a `SingleProvider` into a factory function.\n *\n * @param provider provider to convert to factory\n */\n\n\nfunction providerToFactory(provider, ngModuleType, providers) {\n  var factory = undefined;\n\n  if (isTypeProvider(provider)) {\n    var unwrappedProvider = resolveForwardRef(provider);\n    return getFactoryDef(unwrappedProvider) || injectableDefOrInjectorDefFactory(unwrappedProvider);\n  } else {\n    if (isValueProvider(provider)) {\n      factory = function factory() {\n        return resolveForwardRef(provider.useValue);\n      };\n    } else if (isFactoryProvider(provider)) {\n      factory = function factory() {\n        return provider.useFactory.apply(provider, _toConsumableArray(injectArgs(provider.deps || [])));\n      };\n    } else if (isExistingProvider(provider)) {\n      factory = function factory() {\n        return ɵɵinject(resolveForwardRef(provider.useExisting));\n      };\n    } else {\n      var classRef = resolveForwardRef(provider && (provider.useClass || provider.provide));\n\n      if (ngDevMode && !classRef) {\n        throwInvalidProviderError(ngModuleType, providers, provider);\n      }\n\n      if (hasDeps(provider)) {\n        factory = function factory() {\n          return _construct(classRef, _toConsumableArray(injectArgs(provider.deps)));\n        };\n      } else {\n        return getFactoryDef(classRef) || injectableDefOrInjectorDefFactory(classRef);\n      }\n    }\n  }\n\n  return factory;\n}\n\nfunction makeRecord(factory, value) {\n  var multi = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n  return {\n    factory: factory,\n    value: value,\n    multi: multi ? [] : undefined\n  };\n}\n\nfunction isValueProvider(value) {\n  return value !== null && _typeof(value) == 'object' && USE_VALUE in value;\n}\n\nfunction isExistingProvider(value) {\n  return !!(value && value.useExisting);\n}\n\nfunction isFactoryProvider(value) {\n  return !!(value && value.useFactory);\n}\n\nfunction isTypeProvider(value) {\n  return typeof value === 'function';\n}\n\nfunction isClassProvider(value) {\n  return !!value.useClass;\n}\n\nfunction hasDeps(value) {\n  return !!value.deps;\n}\n\nfunction hasOnDestroy(value) {\n  return value !== null && _typeof(value) === 'object' && typeof value.ngOnDestroy === 'function';\n}\n\nfunction couldBeInjectableType(value) {\n  return typeof value === 'function' || _typeof(value) === 'object' && value instanceof InjectionToken;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction INJECTOR_IMPL__PRE_R3__(providers, parent, name) {\n  return new StaticInjector(providers, parent, name);\n}\n\nfunction INJECTOR_IMPL__POST_R3__(providers, parent, name) {\n  return createInjector({\n    name: name\n  }, parent, providers, name);\n}\n\nvar INJECTOR_IMPL = INJECTOR_IMPL__PRE_R3__;\n/**\n * Concrete injectors implement this interface. Injectors are configured\n * with [providers](guide/glossary#provider) that associate\n * dependencies of various types with [injection tokens](guide/glossary#di-token).\n *\n * @see [\"DI Providers\"](guide/dependency-injection-providers).\n * @see `StaticProvider`\n *\n * @usageNotes\n *\n *  The following example creates a service injector instance.\n *\n * {@example core/di/ts/provider_spec.ts region='ConstructorProvider'}\n *\n * ### Usage example\n *\n * {@example core/di/ts/injector_spec.ts region='Injector'}\n *\n * `Injector` returns itself when given `Injector` as a token:\n *\n * {@example core/di/ts/injector_spec.ts region='injectInjector'}\n *\n * @publicApi\n */\n\nvar Injector = /*#__PURE__*/function () {\n  function Injector() {\n    _classCallCheck(this, Injector);\n  }\n\n  _createClass2(Injector, null, [{\n    key: \"create\",\n    value: function create(options, parent) {\n      if (Array.isArray(options)) {\n        return INJECTOR_IMPL(options, parent, '');\n      } else {\n        return INJECTOR_IMPL(options.providers, options.parent, options.name || '');\n      }\n    }\n  }]);\n\n  return Injector;\n}();\n\nInjector.THROW_IF_NOT_FOUND = THROW_IF_NOT_FOUND;\nInjector.NULL = new NullInjector();\n/** @nocollapse */\n\nInjector.ɵprov = ɵɵdefineInjectable({\n  token: Injector,\n  providedIn: 'any',\n  factory: function factory() {\n    return ɵɵinject(INJECTOR$1);\n  }\n});\n/**\n * @internal\n * @nocollapse\n */\n\nInjector.__NG_ELEMENT_ID__ = -1\n/* Injector */\n;\n\nvar IDENT = function IDENT(value) {\n  return value;\n};\n\nvar ɵ0$6 = IDENT;\nvar EMPTY = [];\nvar CIRCULAR$1 = IDENT;\n\nvar MULTI_PROVIDER_FN = function MULTI_PROVIDER_FN() {\n  return Array.prototype.slice.call(arguments);\n};\n\nvar ɵ1$2 = MULTI_PROVIDER_FN;\nvar NO_NEW_LINE$1 = 'ɵ';\n\nvar StaticInjector = /*#__PURE__*/function () {\n  function StaticInjector(providers) {\n    var parent = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : Injector.NULL;\n    var source = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;\n\n    _classCallCheck(this, StaticInjector);\n\n    this.parent = parent;\n    this.source = source;\n    var records = this._records = new Map();\n    records.set(Injector, {\n      token: Injector,\n      fn: IDENT,\n      deps: EMPTY,\n      value: this,\n      useNew: false\n    });\n    records.set(INJECTOR$1, {\n      token: INJECTOR$1,\n      fn: IDENT,\n      deps: EMPTY,\n      value: this,\n      useNew: false\n    });\n    this.scope = recursivelyProcessProviders(records, providers);\n  }\n\n  _createClass2(StaticInjector, [{\n    key: \"get\",\n    value: function get(token, notFoundValue) {\n      var flags = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : InjectFlags.Default;\n      var records = this._records;\n      var record = records.get(token);\n\n      if (record === undefined) {\n        // This means we have never seen this record, see if it is tree shakable provider.\n        var injectableDef = getInjectableDef(token);\n\n        if (injectableDef) {\n          var providedIn = injectableDef && injectableDef.providedIn;\n\n          if (providedIn === 'any' || providedIn != null && providedIn === this.scope) {\n            records.set(token, record = resolveProvider({\n              provide: token,\n              useFactory: injectableDef.factory,\n              deps: EMPTY\n            }));\n          }\n        }\n\n        if (record === undefined) {\n          // Set record to null to make sure that we don't go through expensive lookup above again.\n          records.set(token, null);\n        }\n      }\n\n      var lastInjector = setCurrentInjector(this);\n\n      try {\n        return tryResolveToken(token, record, records, this.parent, notFoundValue, flags);\n      } catch (e) {\n        return catchInjectorError(e, token, 'StaticInjectorError', this.source);\n      } finally {\n        setCurrentInjector(lastInjector);\n      }\n    }\n  }, {\n    key: \"toString\",\n    value: function toString() {\n      var tokens = [],\n          records = this._records;\n      records.forEach(function (v, token) {\n        return tokens.push(stringify(token));\n      });\n      return \"StaticInjector[\".concat(tokens.join(', '), \"]\");\n    }\n  }]);\n\n  return StaticInjector;\n}();\n\nfunction resolveProvider(provider) {\n  var deps = computeDeps(provider);\n  var fn = IDENT;\n  var value = EMPTY;\n  var useNew = false;\n  var provide = resolveForwardRef(provider.provide);\n\n  if (USE_VALUE in provider) {\n    // We need to use USE_VALUE in provider since provider.useValue could be defined as undefined.\n    value = provider.useValue;\n  } else if (provider.useFactory) {\n    fn = provider.useFactory;\n  } else if (provider.useExisting) {// Just use IDENT\n  } else if (provider.useClass) {\n    useNew = true;\n    fn = resolveForwardRef(provider.useClass);\n  } else if (typeof provide == 'function') {\n    useNew = true;\n    fn = provide;\n  } else {\n    throw staticError('StaticProvider does not have [useValue|useFactory|useExisting|useClass] or [provide] is not newable', provider);\n  }\n\n  return {\n    deps: deps,\n    fn: fn,\n    useNew: useNew,\n    value: value\n  };\n}\n\nfunction multiProviderMixError(token) {\n  return staticError('Cannot mix multi providers and regular providers', token);\n}\n\nfunction recursivelyProcessProviders(records, provider) {\n  var scope = null;\n\n  if (provider) {\n    provider = resolveForwardRef(provider);\n\n    if (Array.isArray(provider)) {\n      // if we have an array recurse into the array\n      for (var i = 0; i < provider.length; i++) {\n        scope = recursivelyProcessProviders(records, provider[i]) || scope;\n      }\n    } else if (typeof provider === 'function') {\n      // Functions were supported in ReflectiveInjector, but are not here. For safety give useful\n      // error messages\n      throw staticError('Function/Class not supported', provider);\n    } else if (provider && _typeof(provider) === 'object' && provider.provide) {\n      // At this point we have what looks like a provider: {provide: ?, ....}\n      var token = resolveForwardRef(provider.provide);\n      var resolvedProvider = resolveProvider(provider);\n\n      if (provider.multi === true) {\n        // This is a multi provider.\n        var multiProvider = records.get(token);\n\n        if (multiProvider) {\n          if (multiProvider.fn !== MULTI_PROVIDER_FN) {\n            throw multiProviderMixError(token);\n          }\n        } else {\n          // Create a placeholder factory which will look up the constituents of the multi provider.\n          records.set(token, multiProvider = {\n            token: provider.provide,\n            deps: [],\n            useNew: false,\n            fn: MULTI_PROVIDER_FN,\n            value: EMPTY\n          });\n        } // Treat the provider as the token.\n\n\n        token = provider;\n        multiProvider.deps.push({\n          token: token,\n          options: 6\n          /* Default */\n\n        });\n      }\n\n      var record = records.get(token);\n\n      if (record && record.fn == MULTI_PROVIDER_FN) {\n        throw multiProviderMixError(token);\n      }\n\n      if (token === INJECTOR_SCOPE) {\n        scope = resolvedProvider.value;\n      }\n\n      records.set(token, resolvedProvider);\n    } else {\n      throw staticError('Unexpected provider', provider);\n    }\n  }\n\n  return scope;\n}\n\nfunction tryResolveToken(token, record, records, parent, notFoundValue, flags) {\n  try {\n    return resolveToken(token, record, records, parent, notFoundValue, flags);\n  } catch (e) {\n    // ensure that 'e' is of type Error.\n    if (!(e instanceof Error)) {\n      e = new Error(e);\n    }\n\n    var path = e[NG_TEMP_TOKEN_PATH] = e[NG_TEMP_TOKEN_PATH] || [];\n    path.unshift(token);\n\n    if (record && record.value == CIRCULAR$1) {\n      // Reset the Circular flag.\n      record.value = EMPTY;\n    }\n\n    throw e;\n  }\n}\n\nfunction resolveToken(token, record, records, parent, notFoundValue, flags) {\n  var value;\n\n  if (record && !(flags & InjectFlags.SkipSelf)) {\n    // If we don't have a record, this implies that we don't own the provider hence don't know how\n    // to resolve it.\n    value = record.value;\n\n    if (value == CIRCULAR$1) {\n      throw Error(NO_NEW_LINE$1 + 'Circular dependency');\n    } else if (value === EMPTY) {\n      record.value = CIRCULAR$1;\n      var obj = undefined;\n      var useNew = record.useNew;\n      var fn = record.fn;\n      var depRecords = record.deps;\n      var deps = EMPTY;\n\n      if (depRecords.length) {\n        deps = [];\n\n        for (var i = 0; i < depRecords.length; i++) {\n          var depRecord = depRecords[i];\n          var options = depRecord.options;\n          var childRecord = options & 2\n          /* CheckSelf */\n          ? records.get(depRecord.token) : undefined;\n          deps.push(tryResolveToken( // Current Token to resolve\n          depRecord.token, // A record which describes how to resolve the token.\n          // If undefined, this means we don't have such a record\n          childRecord, // Other records we know about.\n          records, // If we don't know how to resolve dependency and we should not check parent for it,\n          // than pass in Null injector.\n          !childRecord && !(options & 4\n          /* CheckParent */\n          ) ? Injector.NULL : parent, options & 1\n          /* Optional */\n          ? null : Injector.THROW_IF_NOT_FOUND, InjectFlags.Default));\n        }\n      }\n\n      record.value = value = useNew ? _construct(fn, _toConsumableArray(deps)) : fn.apply(obj, deps);\n    }\n  } else if (!(flags & InjectFlags.Self)) {\n    value = parent.get(token, notFoundValue, InjectFlags.Default);\n  } else if (!(flags & InjectFlags.Optional)) {\n    value = Injector.NULL.get(token, notFoundValue);\n  } else {\n    value = Injector.NULL.get(token, typeof notFoundValue !== 'undefined' ? notFoundValue : null);\n  }\n\n  return value;\n}\n\nfunction computeDeps(provider) {\n  var deps = EMPTY;\n  var providerDeps = provider.deps;\n\n  if (providerDeps && providerDeps.length) {\n    deps = [];\n\n    for (var i = 0; i < providerDeps.length; i++) {\n      var options = 6\n      /* Default */\n      ;\n      var token = resolveForwardRef(providerDeps[i]);\n\n      if (Array.isArray(token)) {\n        for (var j = 0, annotations = token; j < annotations.length; j++) {\n          var annotation = annotations[j];\n\n          if (annotation instanceof Optional || annotation == Optional) {\n            options = options | 1\n            /* Optional */\n            ;\n          } else if (annotation instanceof SkipSelf || annotation == SkipSelf) {\n            options = options & ~2\n            /* CheckSelf */\n            ;\n          } else if (annotation instanceof Self || annotation == Self) {\n            options = options & ~4\n            /* CheckParent */\n            ;\n          } else if (annotation instanceof Inject) {\n            token = annotation.token;\n          } else {\n            token = resolveForwardRef(annotation);\n          }\n        }\n      }\n\n      deps.push({\n        token: token,\n        options: options\n      });\n    }\n  } else if (provider.useExisting) {\n    var _token = resolveForwardRef(provider.useExisting);\n\n    deps = [{\n      token: _token,\n      options: 6\n      /* Default */\n\n    }];\n  } else if (!providerDeps && !(USE_VALUE in provider)) {\n    // useValue & useExisting are the only ones which are exempt from deps all others need it.\n    throw staticError('\\'deps\\' required', provider);\n  }\n\n  return deps;\n}\n\nfunction staticError(text, obj) {\n  return new Error(formatError(text, obj, 'StaticInjectorError'));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Retrieves the component instance associated with a given DOM element.\n *\n * @usageNotes\n * Given the following DOM structure:\n * ```html\n * <my-app>\n *   <div>\n *     <child-comp></child-comp>\n *   </div>\n * </my-app>\n * ```\n * Calling `getComponent` on `<child-comp>` will return the instance of `ChildComponent`\n * associated with this DOM element.\n *\n * Calling the function on `<my-app>` will return the `MyApp` instance.\n *\n *\n * @param element DOM element from which the component should be retrieved.\n * @returns Component instance associated with the element or `null` if there\n *    is no component associated with it.\n *\n * @publicApi\n * @globalApi ng\n */\n\n\nfunction getComponent(element) {\n  assertDomElement(element);\n  var context = loadLContext(element, false);\n  if (context === null) return null;\n\n  if (context.component === undefined) {\n    context.component = getComponentAtNodeIndex(context.nodeIndex, context.lView);\n  }\n\n  return context.component;\n}\n/**\n * If inside an embedded view (e.g. `*ngIf` or `*ngFor`), retrieves the context of the embedded\n * view that the element is part of. Otherwise retrieves the instance of the component whose view\n * owns the element (in this case, the result is the same as calling `getOwningComponent`).\n *\n * @param element Element for which to get the surrounding component instance.\n * @returns Instance of the component that is around the element or null if the element isn't\n *    inside any component.\n *\n * @publicApi\n * @globalApi ng\n */\n\n\nfunction getContext(element) {\n  assertDomElement(element);\n  var context = loadLContext(element, false);\n  return context === null ? null : context.lView[CONTEXT];\n}\n/**\n * Retrieves the component instance whose view contains the DOM element.\n *\n * For example, if `<child-comp>` is used in the template of `<app-comp>`\n * (i.e. a `ViewChild` of `<app-comp>`), calling `getOwningComponent` on `<child-comp>`\n * would return `<app-comp>`.\n *\n * @param elementOrDir DOM element, component or directive instance\n *    for which to retrieve the root components.\n * @returns Component instance whose view owns the DOM element or null if the element is not\n *    part of a component view.\n *\n * @publicApi\n * @globalApi ng\n */\n\n\nfunction getOwningComponent(elementOrDir) {\n  var context = loadLContext(elementOrDir, false);\n  if (context === null) return null;\n  var lView = context.lView;\n  var parent;\n  ngDevMode && assertLView(lView);\n\n  while (lView[TVIEW].type === 2\n  /* Embedded */\n  && (parent = getLViewParent(lView))) {\n    lView = parent;\n  }\n\n  return lView[FLAGS] & 512\n  /* IsRoot */\n  ? null : lView[CONTEXT];\n}\n/**\n * Retrieves all root components associated with a DOM element, directive or component instance.\n * Root components are those which have been bootstrapped by Angular.\n *\n * @param elementOrDir DOM element, component or directive instance\n *    for which to retrieve the root components.\n * @returns Root components associated with the target object.\n *\n * @publicApi\n * @globalApi ng\n */\n\n\nfunction getRootComponents(elementOrDir) {\n  return _toConsumableArray(getRootContext(elementOrDir).components);\n}\n/**\n * Retrieves an `Injector` associated with an element, component or directive instance.\n *\n * @param elementOrDir DOM element, component or directive instance for which to\n *    retrieve the injector.\n * @returns Injector associated with the element, component or directive instance.\n *\n * @publicApi\n * @globalApi ng\n */\n\n\nfunction getInjector(elementOrDir) {\n  var context = loadLContext(elementOrDir, false);\n  if (context === null) return Injector.NULL;\n  var tNode = context.lView[TVIEW].data[context.nodeIndex];\n  return new NodeInjector(tNode, context.lView);\n}\n/**\n * Retrieve a set of injection tokens at a given DOM node.\n *\n * @param element Element for which the injection tokens should be retrieved.\n */\n\n\nfunction getInjectionTokens(element) {\n  var context = loadLContext(element, false);\n  if (context === null) return [];\n  var lView = context.lView;\n  var tView = lView[TVIEW];\n  var tNode = tView.data[context.nodeIndex];\n  var providerTokens = [];\n  var startIndex = tNode.providerIndexes & 1048575\n  /* ProvidersStartIndexMask */\n  ;\n  var endIndex = tNode.directiveEnd;\n\n  for (var i = startIndex; i < endIndex; i++) {\n    var value = tView.data[i];\n\n    if (isDirectiveDefHack(value)) {\n      // The fact that we sometimes store Type and sometimes DirectiveDef in this location is a\n      // design flaw.  We should always store same type so that we can be monomorphic. The issue\n      // is that for Components/Directives we store the def instead the type. The correct behavior\n      // is that we should always be storing injectable type in this location.\n      value = value.type;\n    }\n\n    providerTokens.push(value);\n  }\n\n  return providerTokens;\n}\n/**\n * Retrieves directive instances associated with a given DOM element. Does not include\n * component instances.\n *\n * @usageNotes\n * Given the following DOM structure:\n * ```\n * <my-app>\n *   <button my-button></button>\n *   <my-comp></my-comp>\n * </my-app>\n * ```\n * Calling `getDirectives` on `<button>` will return an array with an instance of the `MyButton`\n * directive that is associated with the DOM element.\n *\n * Calling `getDirectives` on `<my-comp>` will return an empty array.\n *\n * @param element DOM element for which to get the directives.\n * @returns Array of directives associated with the element.\n *\n * @publicApi\n * @globalApi ng\n */\n\n\nfunction getDirectives(element) {\n  var context = loadLContext(element);\n\n  if (context.directives === undefined) {\n    context.directives = getDirectivesAtNodeIndex(context.nodeIndex, context.lView, false);\n  } // The `directives` in this case are a named array called `LComponentView`. Clone the\n  // result so we don't expose an internal data structure in the user's console.\n\n\n  return context.directives === null ? [] : _toConsumableArray(context.directives);\n}\n\nfunction loadLContext(target) {\n  var throwOnNotFound = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;\n  var context = getLContext(target);\n\n  if (!context && throwOnNotFound) {\n    throw new Error(ngDevMode ? \"Unable to find context associated with \".concat(stringifyForError(target)) : 'Invalid ng target');\n  }\n\n  return context;\n}\n/**\n * Retrieve map of local references.\n *\n * The references are retrieved as a map of local reference name to element or directive instance.\n *\n * @param target DOM element, component or directive instance for which to retrieve\n *    the local references.\n */\n\n\nfunction getLocalRefs(target) {\n  var context = loadLContext(target, false);\n  if (context === null) return {};\n\n  if (context.localRefs === undefined) {\n    context.localRefs = discoverLocalRefs(context.lView, context.nodeIndex);\n  }\n\n  return context.localRefs || {};\n}\n/**\n * Retrieves the host element of a component or directive instance.\n * The host element is the DOM element that matched the selector of the directive.\n *\n * @param componentOrDirective Component or directive instance for which the host\n *     element should be retrieved.\n * @returns Host element of the target.\n *\n * @publicApi\n * @globalApi ng\n */\n\n\nfunction getHostElement(componentOrDirective) {\n  return getLContext(componentOrDirective).native;\n}\n/**\n * Retrieves the rendered text for a given component.\n *\n * This function retrieves the host element of a component and\n * and then returns the `textContent` for that element. This implies\n * that the text returned will include re-projected content of\n * the component as well.\n *\n * @param component The component to return the content text for.\n */\n\n\nfunction getRenderedText(component) {\n  var hostElement = getHostElement(component);\n  return hostElement.textContent || '';\n}\n\nfunction loadLContextFromNode(node) {\n  if (!(node instanceof Node)) throw new Error('Expecting instance of DOM Element');\n  return loadLContext(node);\n}\n/**\n * Retrieves a list of event listeners associated with a DOM element. The list does include host\n * listeners, but it does not include event listeners defined outside of the Angular context\n * (e.g. through `addEventListener`).\n *\n * @usageNotes\n * Given the following DOM structure:\n * ```\n * <my-app>\n *   <div (click)=\"doSomething()\"></div>\n * </my-app>\n *\n * ```\n * Calling `getListeners` on `<div>` will return an object that looks as follows:\n * ```\n * {\n *   name: 'click',\n *   element: <div>,\n *   callback: () => doSomething(),\n *   useCapture: false\n * }\n * ```\n *\n * @param element Element for which the DOM listeners should be retrieved.\n * @returns Array of event listeners on the DOM element.\n *\n * @publicApi\n * @globalApi ng\n */\n\n\nfunction getListeners(element) {\n  assertDomElement(element);\n  var lContext = loadLContext(element, false);\n  if (lContext === null) return [];\n  var lView = lContext.lView;\n  var tView = lView[TVIEW];\n  var lCleanup = lView[CLEANUP];\n  var tCleanup = tView.cleanup;\n  var listeners = [];\n\n  if (tCleanup && lCleanup) {\n    for (var i = 0; i < tCleanup.length;) {\n      var firstParam = tCleanup[i++];\n      var secondParam = tCleanup[i++];\n\n      if (typeof firstParam === 'string') {\n        var name = firstParam;\n        var listenerElement = unwrapRNode(lView[secondParam]);\n        var callback = lCleanup[tCleanup[i++]];\n        var useCaptureOrIndx = tCleanup[i++]; // if useCaptureOrIndx is boolean then report it as is.\n        // if useCaptureOrIndx is positive number then it in unsubscribe method\n        // if useCaptureOrIndx is negative number then it is a Subscription\n\n        var type = typeof useCaptureOrIndx === 'boolean' || useCaptureOrIndx >= 0 ? 'dom' : 'output';\n        var useCapture = typeof useCaptureOrIndx === 'boolean' ? useCaptureOrIndx : false;\n\n        if (element == listenerElement) {\n          listeners.push({\n            element: element,\n            name: name,\n            callback: callback,\n            useCapture: useCapture,\n            type: type\n          });\n        }\n      }\n    }\n  }\n\n  listeners.sort(sortListeners);\n  return listeners;\n}\n\nfunction sortListeners(a, b) {\n  if (a.name == b.name) return 0;\n  return a.name < b.name ? -1 : 1;\n}\n/**\n * This function should not exist because it is megamorphic and only mostly correct.\n *\n * See call site for more info.\n */\n\n\nfunction isDirectiveDefHack(obj) {\n  return obj.type !== undefined && obj.template !== undefined && obj.declaredInputs !== undefined;\n}\n/**\n * Returns the attached `DebugNode` instance for an element in the DOM.\n *\n * @param element DOM element which is owned by an existing component's view.\n */\n\n\nfunction getDebugNode(element) {\n  var debugNode = null;\n  var lContext = loadLContextFromNode(element);\n  var lView = lContext.lView;\n  var nodeIndex = lContext.nodeIndex;\n\n  if (nodeIndex !== -1) {\n    var valueInLView = lView[nodeIndex]; // this means that value in the lView is a component with its own\n    // data. In this situation the TNode is not accessed at the same spot.\n\n    var tNode = isLView(valueInLView) ? valueInLView[T_HOST] : getTNode(lView[TVIEW], nodeIndex);\n    ngDevMode && assertEqual(tNode.index, nodeIndex, 'Expecting that TNode at index is same as index');\n    debugNode = buildDebugNode(tNode, lView);\n  }\n\n  return debugNode;\n}\n/**\n * Retrieve the component `LView` from component/element.\n *\n * NOTE: `LView` is a private and should not be leaked outside.\n *       Don't export this method to `ng.*` on window.\n *\n * @param target DOM element or component instance for which to retrieve the LView.\n */\n\n\nfunction getComponentLView(target) {\n  var lContext = loadLContext(target);\n  var nodeIndx = lContext.nodeIndex;\n  var lView = lContext.lView;\n  var componentLView = lView[nodeIndx];\n  ngDevMode && assertLView(componentLView);\n  return componentLView;\n}\n/** Asserts that a value is a DOM Element. */\n\n\nfunction assertDomElement(value) {\n  if (typeof Element !== 'undefined' && !(value instanceof Element)) {\n    throw new Error('Expecting instance of DOM Element');\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Marks a component for check (in case of OnPush components) and synchronously\n * performs change detection on the application this component belongs to.\n *\n * @param component Component to {@link ChangeDetectorRef#markForCheck mark for check}.\n *\n * @publicApi\n * @globalApi ng\n */\n\n\nfunction applyChanges(component) {\n  markDirty(component);\n  getRootComponents(component).forEach(function (rootComponent) {\n    return detectChanges(rootComponent);\n  });\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * This file introduces series of globally accessible debug tools\n * to allow for the Angular debugging story to function.\n *\n * To see this in action run the following command:\n *\n *   bazel run --config=ivy\n *   //packages/core/test/bundling/todo:devserver\n *\n *  Then load `localhost:5432` and start using the console tools.\n */\n\n/**\n * This value reflects the property on the window where the dev\n * tools are patched (window.ng).\n * */\n\n\nvar GLOBAL_PUBLISH_EXPANDO_KEY = 'ng';\nvar _published = false;\n/**\n * Publishes a collection of default debug tools onto`window.ng`.\n *\n * These functions are available globally when Angular is in development\n * mode and are automatically stripped away from prod mode is on.\n */\n\nfunction publishDefaultGlobalUtils() {\n  if (!_published) {\n    _published = true;\n    publishGlobalUtil('getComponent', getComponent);\n    publishGlobalUtil('getContext', getContext);\n    publishGlobalUtil('getListeners', getListeners);\n    publishGlobalUtil('getOwningComponent', getOwningComponent);\n    publishGlobalUtil('getHostElement', getHostElement);\n    publishGlobalUtil('getInjector', getInjector);\n    publishGlobalUtil('getRootComponents', getRootComponents);\n    publishGlobalUtil('getDirectives', getDirectives);\n    publishGlobalUtil('applyChanges', applyChanges);\n  }\n}\n/**\n * Publishes the given function to `window.ng` so that it can be\n * used from the browser console when an application is not in production.\n */\n\n\nfunction publishGlobalUtil(name, fn) {\n  if (typeof COMPILED === 'undefined' || !COMPILED) {\n    // Note: we can't export `ng` when using closure enhanced optimization as:\n    // - closure declares globals itself for minified names, which sometimes clobber our `ng` global\n    // - we can't declare a closure extern as the namespace `ng` is already used within Google\n    //   for typings for AngularJS (via `goog.provide('ng....')`).\n    var w = _global;\n    ngDevMode && assertDefined(fn, 'function not defined');\n\n    if (w) {\n      var container = w[GLOBAL_PUBLISH_EXPANDO_KEY];\n\n      if (!container) {\n        container = w[GLOBAL_PUBLISH_EXPANDO_KEY] = {};\n      }\n\n      container[name] = fn;\n    }\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ɵ0$7 = function ɵ0$7(token, notFoundValue) {\n  throwProviderNotFoundError(token, 'NullInjector');\n}; // TODO: A hack to not pull in the NullInjector from @angular/core.\n\n\nvar NULL_INJECTOR$1 = {\n  get: ɵ0$7\n};\n/**\n * Bootstraps a Component into an existing host element and returns an instance\n * of the component.\n *\n * Use this function to bootstrap a component into the DOM tree. Each invocation\n * of this function will create a separate tree of components, injectors and\n * change detection cycles and lifetimes. To dynamically insert a new component\n * into an existing tree such that it shares the same injection, change detection\n * and object lifetime, use {@link ViewContainer#createComponent}.\n *\n * @param componentType Component to bootstrap\n * @param options Optional parameters which control bootstrapping\n */\n\nfunction renderComponent$1(componentType\n/* Type as workaround for: Microsoft/TypeScript/issues/4881 */\n) {\n  var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n  ngDevMode && publishDefaultGlobalUtils();\n  ngDevMode && assertComponentType(componentType);\n  var rendererFactory = opts.rendererFactory || domRendererFactory3;\n  var sanitizer = opts.sanitizer || null;\n  var componentDef = getComponentDef(componentType);\n  if (componentDef.type != componentType) componentDef.type = componentType; // The first index of the first selector is the tag name.\n\n  var componentTag = componentDef.selectors[0][0];\n  var hostRenderer = rendererFactory.createRenderer(null, null);\n  var hostRNode = locateHostElement(hostRenderer, opts.host || componentTag, componentDef.encapsulation);\n  var rootFlags = componentDef.onPush ? 64\n  /* Dirty */\n  | 512\n  /* IsRoot */\n  : 16\n  /* CheckAlways */\n  | 512\n  /* IsRoot */\n  ;\n  var rootContext = createRootContext(opts.scheduler, opts.playerHandler);\n  var renderer = rendererFactory.createRenderer(hostRNode, componentDef);\n  var rootTView = createTView(0\n  /* Root */\n  , null, null, 1, 0, null, null, null, null, null);\n  var rootView = createLView(null, rootTView, rootContext, rootFlags, null, null, rendererFactory, renderer, null, opts.injector || null);\n  enterView(rootView);\n  var component;\n\n  try {\n    if (rendererFactory.begin) rendererFactory.begin();\n    var componentView = createRootComponentView(hostRNode, componentDef, rootView, rendererFactory, renderer, sanitizer);\n    component = createRootComponent(componentView, componentDef, rootView, rootContext, opts.hostFeatures || null); // create mode pass\n\n    renderView(rootTView, rootView, null); // update mode pass\n\n    refreshView(rootTView, rootView, null, null);\n  } finally {\n    leaveView();\n    if (rendererFactory.end) rendererFactory.end();\n  }\n\n  return component;\n}\n/**\n * Creates the root component view and the root component node.\n *\n * @param rNode Render host element.\n * @param def ComponentDef\n * @param rootView The parent view where the host node is stored\n * @param rendererFactory Factory to be used for creating child renderers.\n * @param hostRenderer The current renderer\n * @param sanitizer The sanitizer, if provided\n *\n * @returns Component view created\n */\n\n\nfunction createRootComponentView(rNode, def, rootView, rendererFactory, hostRenderer, sanitizer) {\n  var tView = rootView[TVIEW];\n  var index = HEADER_OFFSET;\n  ngDevMode && assertIndexInRange(rootView, index);\n  rootView[index] = rNode; // '#host' is added here as we don't know the real host DOM name (we don't want to read it) and at\n  // the same time we want to communicate the the debug `TNode` that this is a special `TNode`\n  // representing a host element.\n\n  var tNode = getOrCreateTNode(tView, index, 2\n  /* Element */\n  , '#host', null);\n  var mergedAttrs = tNode.mergedAttrs = def.hostAttrs;\n\n  if (mergedAttrs !== null) {\n    computeStaticStyling(tNode, mergedAttrs, true);\n\n    if (rNode !== null) {\n      setUpAttributes(hostRenderer, rNode, mergedAttrs);\n\n      if (tNode.classes !== null) {\n        writeDirectClass(hostRenderer, rNode, tNode.classes);\n      }\n\n      if (tNode.styles !== null) {\n        writeDirectStyle(hostRenderer, rNode, tNode.styles);\n      }\n    }\n  }\n\n  var viewRenderer = rendererFactory.createRenderer(rNode, def);\n  var componentView = createLView(rootView, getOrCreateTComponentView(def), null, def.onPush ? 64\n  /* Dirty */\n  : 16\n  /* CheckAlways */\n  , rootView[index], tNode, rendererFactory, viewRenderer, sanitizer || null, null);\n\n  if (tView.firstCreatePass) {\n    diPublicInInjector(getOrCreateNodeInjectorForNode(tNode, rootView), tView, def.type);\n    markAsComponentHost(tView, tNode);\n    initTNodeFlags(tNode, rootView.length, 1);\n  }\n\n  addToViewTree(rootView, componentView); // Store component view at node index, with node as the HOST\n\n  return rootView[index] = componentView;\n}\n/**\n * Creates a root component and sets it up with features and host bindings. Shared by\n * renderComponent() and ViewContainerRef.createComponent().\n */\n\n\nfunction createRootComponent(componentView, componentDef, rootLView, rootContext, hostFeatures) {\n  var tView = rootLView[TVIEW]; // Create directive instance with factory() and store at next index in viewData\n\n  var component = instantiateRootComponent(tView, rootLView, componentDef);\n  rootContext.components.push(component);\n  componentView[CONTEXT] = component;\n  hostFeatures && hostFeatures.forEach(function (feature) {\n    return feature(component, componentDef);\n  }); // We want to generate an empty QueryList for root content queries for backwards\n  // compatibility with ViewEngine.\n\n  if (componentDef.contentQueries) {\n    var tNode = getCurrentTNode();\n    ngDevMode && assertDefined(tNode, 'TNode expected');\n    componentDef.contentQueries(1\n    /* Create */\n    , component, tNode.directiveStart);\n  }\n\n  var rootTNode = getCurrentTNode();\n  ngDevMode && assertDefined(rootTNode, 'tNode should have been already created');\n\n  if (tView.firstCreatePass && (componentDef.hostBindings !== null || componentDef.hostAttrs !== null)) {\n    setSelectedIndex(rootTNode.index);\n    var rootTView = rootLView[TVIEW];\n    registerHostBindingOpCodes(rootTView, rootTNode, rootLView, rootTNode.directiveStart, rootTNode.directiveEnd, componentDef);\n    invokeHostBindingsInCreationMode(componentDef, component);\n  }\n\n  return component;\n}\n\nfunction createRootContext(scheduler, playerHandler) {\n  return {\n    components: [],\n    scheduler: scheduler || defaultScheduler,\n    clean: CLEAN_PROMISE,\n    playerHandler: playerHandler || null,\n    flags: 0\n    /* Empty */\n\n  };\n}\n/**\n * Used to enable lifecycle hooks on the root component.\n *\n * Include this feature when calling `renderComponent` if the root component\n * you are rendering has lifecycle hooks defined. Otherwise, the hooks won't\n * be called properly.\n *\n * Example:\n *\n * ```\n * renderComponent(AppComponent, {hostFeatures: [LifecycleHooksFeature]});\n * ```\n */\n\n\nfunction LifecycleHooksFeature(component, def) {\n  var lView = readPatchedLView(component);\n  ngDevMode && assertDefined(lView, 'LView is required');\n  var tView = lView[TVIEW];\n  var tNode = getCurrentTNode();\n  ngDevMode && assertDefined(tNode, 'TNode is required');\n  registerPostOrderHooks(tView, tNode);\n}\n/**\n * Wait on component until it is rendered.\n *\n * This function returns a `Promise` which is resolved when the component's\n * change detection is executed. This is determined by finding the scheduler\n * associated with the `component`'s render tree and waiting until the scheduler\n * flushes. If nothing is scheduled, the function returns a resolved promise.\n *\n * Example:\n * ```\n * await whenRendered(myComponent);\n * ```\n *\n * @param component Component to wait upon\n * @returns Promise which resolves when the component is rendered.\n */\n\n\nfunction whenRendered(component) {\n  return getRootContext(component).clean;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction getSuperType(type) {\n  return Object.getPrototypeOf(type.prototype).constructor;\n}\n/**\n * Merges the definition from a super class to a sub class.\n * @param definition The definition that is a SubClass of another directive of component\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵInheritDefinitionFeature(definition) {\n  var superType = getSuperType(definition.type);\n  var shouldInheritFields = true;\n  var inheritanceChain = [definition];\n\n  while (superType) {\n    var superDef = undefined;\n\n    if (isComponentDef(definition)) {\n      // Don't use getComponentDef/getDirectiveDef. This logic relies on inheritance.\n      superDef = superType.ɵcmp || superType.ɵdir;\n    } else {\n      if (superType.ɵcmp) {\n        throw new Error('Directives cannot inherit Components');\n      } // Don't use getComponentDef/getDirectiveDef. This logic relies on inheritance.\n\n\n      superDef = superType.ɵdir;\n    }\n\n    if (superDef) {\n      if (shouldInheritFields) {\n        inheritanceChain.push(superDef); // Some fields in the definition may be empty, if there were no values to put in them that\n        // would've justified object creation. Unwrap them if necessary.\n\n        var writeableDef = definition;\n        writeableDef.inputs = maybeUnwrapEmpty(definition.inputs);\n        writeableDef.declaredInputs = maybeUnwrapEmpty(definition.declaredInputs);\n        writeableDef.outputs = maybeUnwrapEmpty(definition.outputs); // Merge hostBindings\n\n        var superHostBindings = superDef.hostBindings;\n        superHostBindings && inheritHostBindings(definition, superHostBindings); // Merge queries\n\n        var superViewQuery = superDef.viewQuery;\n        var superContentQueries = superDef.contentQueries;\n        superViewQuery && inheritViewQuery(definition, superViewQuery);\n        superContentQueries && inheritContentQueries(definition, superContentQueries); // Merge inputs and outputs\n\n        fillProperties(definition.inputs, superDef.inputs);\n        fillProperties(definition.declaredInputs, superDef.declaredInputs);\n        fillProperties(definition.outputs, superDef.outputs); // Merge animations metadata.\n        // If `superDef` is a Component, the `data` field is present (defaults to an empty object).\n\n        if (isComponentDef(superDef) && superDef.data.animation) {\n          // If super def is a Component, the `definition` is also a Component, since Directives can\n          // not inherit Components (we throw an error above and cannot reach this code).\n          var defData = definition.data;\n          defData.animation = (defData.animation || []).concat(superDef.data.animation);\n        }\n      } // Run parent features\n\n\n      var features = superDef.features;\n\n      if (features) {\n        for (var i = 0; i < features.length; i++) {\n          var feature = features[i];\n\n          if (feature && feature.ngInherit) {\n            feature(definition);\n          } // If `InheritDefinitionFeature` is a part of the current `superDef`, it means that this\n          // def already has all the necessary information inherited from its super class(es), so we\n          // can stop merging fields from super classes. However we need to iterate through the\n          // prototype chain to look for classes that might contain other \"features\" (like\n          // NgOnChanges), which we should invoke for the original `definition`. We set the\n          // `shouldInheritFields` flag to indicate that, essentially skipping fields inheritance\n          // logic and only invoking functions from the \"features\" list.\n\n\n          if (feature === ɵɵInheritDefinitionFeature) {\n            shouldInheritFields = false;\n          }\n        }\n      }\n    }\n\n    superType = Object.getPrototypeOf(superType);\n  }\n\n  mergeHostAttrsAcrossInheritance(inheritanceChain);\n}\n/**\n * Merge the `hostAttrs` and `hostVars` from the inherited parent to the base class.\n *\n * @param inheritanceChain A list of `WritableDefs` starting at the top most type and listing\n * sub-types in order. For each type take the `hostAttrs` and `hostVars` and merge it with the child\n * type.\n */\n\n\nfunction mergeHostAttrsAcrossInheritance(inheritanceChain) {\n  var hostVars = 0;\n  var hostAttrs = null; // We process the inheritance order from the base to the leaves here.\n\n  for (var i = inheritanceChain.length - 1; i >= 0; i--) {\n    var def = inheritanceChain[i]; // For each `hostVars`, we need to add the superclass amount.\n\n    def.hostVars = hostVars += def.hostVars; // for each `hostAttrs` we need to merge it with superclass.\n\n    def.hostAttrs = mergeHostAttrs(def.hostAttrs, hostAttrs = mergeHostAttrs(hostAttrs, def.hostAttrs));\n  }\n}\n\nfunction maybeUnwrapEmpty(value) {\n  if (value === EMPTY_OBJ) {\n    return {};\n  } else if (value === EMPTY_ARRAY) {\n    return [];\n  } else {\n    return value;\n  }\n}\n\nfunction inheritViewQuery(definition, superViewQuery) {\n  var prevViewQuery = definition.viewQuery;\n\n  if (prevViewQuery) {\n    definition.viewQuery = function (rf, ctx) {\n      superViewQuery(rf, ctx);\n      prevViewQuery(rf, ctx);\n    };\n  } else {\n    definition.viewQuery = superViewQuery;\n  }\n}\n\nfunction inheritContentQueries(definition, superContentQueries) {\n  var prevContentQueries = definition.contentQueries;\n\n  if (prevContentQueries) {\n    definition.contentQueries = function (rf, ctx, directiveIndex) {\n      superContentQueries(rf, ctx, directiveIndex);\n      prevContentQueries(rf, ctx, directiveIndex);\n    };\n  } else {\n    definition.contentQueries = superContentQueries;\n  }\n}\n\nfunction inheritHostBindings(definition, superHostBindings) {\n  var prevHostBindings = definition.hostBindings;\n\n  if (prevHostBindings) {\n    definition.hostBindings = function (rf, ctx) {\n      superHostBindings(rf, ctx);\n      prevHostBindings(rf, ctx);\n    };\n  } else {\n    definition.hostBindings = superHostBindings;\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Fields which exist on either directive or component definitions, and need to be copied from\n * parent to child classes by the `ɵɵCopyDefinitionFeature`.\n */\n\n\nvar COPY_DIRECTIVE_FIELDS = [// The child class should use the providers of its parent.\n'providersResolver'];\n/**\n * Fields which exist only on component definitions, and need to be copied from parent to child\n * classes by the `ɵɵCopyDefinitionFeature`.\n *\n * The type here allows any field of `ComponentDef` which is not also a property of `DirectiveDef`,\n * since those should go in `COPY_DIRECTIVE_FIELDS` above.\n */\n\nvar COPY_COMPONENT_FIELDS = [// The child class should use the template function of its parent, including all template\n// semantics.\n'template', 'decls', 'consts', 'vars', 'onPush', 'ngContentSelectors', // The child class should use the CSS styles of its parent, including all styling semantics.\n'styles', 'encapsulation', // The child class should be checked by the runtime in the same way as its parent.\n'schemas'];\n/**\n * Copies the fields not handled by the `ɵɵInheritDefinitionFeature` from the supertype of a\n * definition.\n *\n * This exists primarily to support ngcc migration of an existing View Engine pattern, where an\n * entire decorator is inherited from a parent to a child class. When ngcc detects this case, it\n * generates a skeleton definition on the child class, and applies this feature.\n *\n * The `ɵɵCopyDefinitionFeature` then copies any needed fields from the parent class' definition,\n * including things like the component template function.\n *\n * @param definition The definition of a child class which inherits from a parent class with its\n * own definition.\n *\n * @codeGenApi\n */\n\nfunction ɵɵCopyDefinitionFeature(definition) {\n  var superType = getSuperType(definition.type);\n  var superDef = undefined;\n\n  if (isComponentDef(definition)) {\n    // Don't use getComponentDef/getDirectiveDef. This logic relies on inheritance.\n    superDef = superType.ɵcmp;\n  } else {\n    // Don't use getComponentDef/getDirectiveDef. This logic relies on inheritance.\n    superDef = superType.ɵdir;\n  } // Needed because `definition` fields are readonly.\n\n\n  var defAny = definition; // Copy over any fields that apply to either directives or components.\n\n  var _iterator2 = _createForOfIteratorHelper(COPY_DIRECTIVE_FIELDS),\n      _step2;\n\n  try {\n    for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {\n      var _field = _step2.value;\n      defAny[_field] = superDef[_field];\n    }\n  } catch (err) {\n    _iterator2.e(err);\n  } finally {\n    _iterator2.f();\n  }\n\n  if (isComponentDef(superDef)) {\n    // Copy over any component-specific fields.\n    var _iterator3 = _createForOfIteratorHelper(COPY_COMPONENT_FIELDS),\n        _step3;\n\n    try {\n      for (_iterator3.s(); !(_step3 = _iterator3.n()).done;) {\n        var field = _step3.value;\n        defAny[field] = superDef[field];\n      }\n    } catch (err) {\n      _iterator3.e(err);\n    } finally {\n      _iterator3.f();\n    }\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar _symbolIterator = null;\n\nfunction getSymbolIterator() {\n  if (!_symbolIterator) {\n    var _Symbol = _global['Symbol'];\n\n    if (_Symbol && _Symbol.iterator) {\n      _symbolIterator = _Symbol.iterator;\n    } else {\n      // es6-shim specific logic\n      var keys = Object.getOwnPropertyNames(Map.prototype);\n\n      for (var i = 0; i < keys.length; ++i) {\n        var key = keys[i];\n\n        if (key !== 'entries' && key !== 'size' && Map.prototype[key] === Map.prototype['entries']) {\n          _symbolIterator = key;\n        }\n      }\n    }\n  }\n\n  return _symbolIterator;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction devModeEqual(a, b) {\n  var isListLikeIterableA = isListLikeIterable(a);\n  var isListLikeIterableB = isListLikeIterable(b);\n\n  if (isListLikeIterableA && isListLikeIterableB) {\n    return areIterablesEqual(a, b, devModeEqual);\n  } else {\n    var isAObject = a && (_typeof(a) === 'object' || typeof a === 'function');\n    var isBObject = b && (_typeof(b) === 'object' || typeof b === 'function');\n\n    if (!isListLikeIterableA && isAObject && !isListLikeIterableB && isBObject) {\n      return true;\n    } else {\n      return Object.is(a, b);\n    }\n  }\n}\n/**\n * Indicates that the result of a {@link Pipe} transformation has changed even though the\n * reference has not changed.\n *\n * Wrapped values are unwrapped automatically during the change detection, and the unwrapped value\n * is stored.\n *\n * Example:\n *\n * ```\n * if (this._latestValue === this._latestReturnedValue) {\n *    return this._latestReturnedValue;\n *  } else {\n *    this._latestReturnedValue = this._latestValue;\n *    return WrappedValue.wrap(this._latestValue); // this will force update\n *  }\n * ```\n *\n * @publicApi\n * @deprecated from v10 stop using. (No replacement, deemed unnecessary.)\n */\n\n\nvar WrappedValue = /*#__PURE__*/function () {\n  function WrappedValue(value) {\n    _classCallCheck(this, WrappedValue);\n\n    this.wrapped = value;\n  }\n  /** Creates a wrapped value. */\n\n\n  _createClass2(WrappedValue, null, [{\n    key: \"wrap\",\n    value: function wrap(value) {\n      return new WrappedValue(value);\n    }\n    /**\n     * Returns the underlying value of a wrapped value.\n     * Returns the given `value` when it is not wrapped.\n     **/\n\n  }, {\n    key: \"unwrap\",\n    value: function unwrap(value) {\n      return WrappedValue.isWrapped(value) ? value.wrapped : value;\n    }\n    /** Returns true if `value` is a wrapped value. */\n\n  }, {\n    key: \"isWrapped\",\n    value: function isWrapped(value) {\n      return value instanceof WrappedValue;\n    }\n  }]);\n\n  return WrappedValue;\n}();\n\nfunction isListLikeIterable(obj) {\n  if (!isJsObject(obj)) return false;\n  return Array.isArray(obj) || !(obj instanceof Map) && // JS Map are iterables but return entries as [k, v]\n  getSymbolIterator() in obj; // JS Iterable have a Symbol.iterator prop\n}\n\nfunction areIterablesEqual(a, b, comparator) {\n  var iterator1 = a[getSymbolIterator()]();\n  var iterator2 = b[getSymbolIterator()]();\n\n  while (true) {\n    var item1 = iterator1.next();\n    var item2 = iterator2.next();\n    if (item1.done && item2.done) return true;\n    if (item1.done || item2.done) return false;\n    if (!comparator(item1.value, item2.value)) return false;\n  }\n}\n\nfunction iterateListLike(obj, fn) {\n  if (Array.isArray(obj)) {\n    for (var i = 0; i < obj.length; i++) {\n      fn(obj[i]);\n    }\n  } else {\n    var iterator = obj[getSymbolIterator()]();\n    var item;\n\n    while (!(item = iterator.next()).done) {\n      fn(item.value);\n    }\n  }\n}\n\nfunction isJsObject(o) {\n  return o !== null && (typeof o === 'function' || _typeof(o) === 'object');\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// TODO(misko): consider inlining\n\n/** Updates binding and returns the value. */\n\n\nfunction updateBinding(lView, bindingIndex, value) {\n  return lView[bindingIndex] = value;\n}\n/** Gets the current binding value. */\n\n\nfunction getBinding(lView, bindingIndex) {\n  ngDevMode && assertIndexInRange(lView, bindingIndex);\n  ngDevMode && assertNotSame(lView[bindingIndex], NO_CHANGE, 'Stored value should never be NO_CHANGE.');\n  return lView[bindingIndex];\n}\n/**\n * Updates binding if changed, then returns whether it was updated.\n *\n * This function also checks the `CheckNoChangesMode` and throws if changes are made.\n * Some changes (Objects/iterables) during `CheckNoChangesMode` are exempt to comply with VE\n * behavior.\n *\n * @param lView current `LView`\n * @param bindingIndex The binding in the `LView` to check\n * @param value New value to check against `lView[bindingIndex]`\n * @returns `true` if the bindings has changed. (Throws if binding has changed during\n *          `CheckNoChangesMode`)\n */\n\n\nfunction bindingUpdated(lView, bindingIndex, value) {\n  ngDevMode && assertNotSame(value, NO_CHANGE, 'Incoming value should never be NO_CHANGE.');\n  ngDevMode && assertLessThan(bindingIndex, lView.length, \"Slot should have been initialized to NO_CHANGE\");\n  var oldValue = lView[bindingIndex];\n\n  if (Object.is(oldValue, value)) {\n    return false;\n  } else {\n    if (ngDevMode && isInCheckNoChangesMode()) {\n      // View engine didn't report undefined values as changed on the first checkNoChanges pass\n      // (before the change detection was run).\n      var oldValueToCompare = oldValue !== NO_CHANGE ? oldValue : undefined;\n\n      if (!devModeEqual(oldValueToCompare, value)) {\n        var details = getExpressionChangedErrorDetails(lView, bindingIndex, oldValueToCompare, value);\n        throwErrorIfNoChangesMode(oldValue === NO_CHANGE, details.oldValue, details.newValue, details.propName);\n      } // There was a change, but the `devModeEqual` decided that the change is exempt from an error.\n      // For this reason we exit as if no change. The early exit is needed to prevent the changed\n      // value to be written into `LView` (If we would write the new value that we would not see it\n      // as change on next CD.)\n\n\n      return false;\n    }\n\n    lView[bindingIndex] = value;\n    return true;\n  }\n}\n/** Updates 2 bindings if changed, then returns whether either was updated. */\n\n\nfunction bindingUpdated2(lView, bindingIndex, exp1, exp2) {\n  var different = bindingUpdated(lView, bindingIndex, exp1);\n  return bindingUpdated(lView, bindingIndex + 1, exp2) || different;\n}\n/** Updates 3 bindings if changed, then returns whether any was updated. */\n\n\nfunction bindingUpdated3(lView, bindingIndex, exp1, exp2, exp3) {\n  var different = bindingUpdated2(lView, bindingIndex, exp1, exp2);\n  return bindingUpdated(lView, bindingIndex + 2, exp3) || different;\n}\n/** Updates 4 bindings if changed, then returns whether any was updated. */\n\n\nfunction bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4) {\n  var different = bindingUpdated2(lView, bindingIndex, exp1, exp2);\n  return bindingUpdated2(lView, bindingIndex + 2, exp3, exp4) || different;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Updates the value of or removes a bound attribute on an Element.\n *\n * Used in the case of `[attr.title]=\"value\"`\n *\n * @param name name The name of the attribute.\n * @param value value The attribute is removed when value is `null` or `undefined`.\n *                  Otherwise the attribute value is set to the stringified value.\n * @param sanitizer An optional function used to sanitize the value.\n * @param namespace Optional namespace to use when setting the attribute.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵattribute(name, value, sanitizer, namespace) {\n  var lView = getLView();\n  var bindingIndex = nextBindingIndex();\n\n  if (bindingUpdated(lView, bindingIndex, value)) {\n    var tView = getTView();\n    var tNode = getSelectedTNode();\n    elementAttributeInternal(tNode, lView, name, value, sanitizer, namespace);\n    ngDevMode && storePropertyBindingMetadata(tView.data, tNode, 'attr.' + name, bindingIndex);\n  }\n\n  return ɵɵattribute;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Create interpolation bindings with a variable number of expressions.\n *\n * If there are 1 to 8 expressions `interpolation1()` to `interpolation8()` should be used instead.\n * Those are faster because there is no need to create an array of expressions and iterate over it.\n *\n * `values`:\n * - has static text at even indexes,\n * - has evaluated expressions at odd indexes.\n *\n * Returns the concatenated string when any of the arguments changes, `NO_CHANGE` otherwise.\n */\n\n\nfunction interpolationV(lView, values) {\n  ngDevMode && assertLessThan(2, values.length, 'should have at least 3 values');\n  ngDevMode && assertEqual(values.length % 2, 1, 'should have an odd number of values');\n  var isBindingUpdated = false;\n  var bindingIndex = getBindingIndex();\n\n  for (var i = 1; i < values.length; i += 2) {\n    // Check if bindings (odd indexes) have changed\n    isBindingUpdated = bindingUpdated(lView, bindingIndex++, values[i]) || isBindingUpdated;\n  }\n\n  setBindingIndex(bindingIndex);\n\n  if (!isBindingUpdated) {\n    return NO_CHANGE;\n  } // Build the updated content\n\n\n  var content = values[0];\n\n  for (var _i5 = 1; _i5 < values.length; _i5 += 2) {\n    content += renderStringify(values[_i5]) + values[_i5 + 1];\n  }\n\n  return content;\n}\n/**\n * Creates an interpolation binding with 1 expression.\n *\n * @param prefix static value used for concatenation only.\n * @param v0 value checked for change.\n * @param suffix static value used for concatenation only.\n */\n\n\nfunction interpolation1(lView, prefix, v0, suffix) {\n  var different = bindingUpdated(lView, nextBindingIndex(), v0);\n  return different ? prefix + renderStringify(v0) + suffix : NO_CHANGE;\n}\n/**\n * Creates an interpolation binding with 2 expressions.\n */\n\n\nfunction interpolation2(lView, prefix, v0, i0, v1, suffix) {\n  var bindingIndex = getBindingIndex();\n  var different = bindingUpdated2(lView, bindingIndex, v0, v1);\n  incrementBindingIndex(2);\n  return different ? prefix + renderStringify(v0) + i0 + renderStringify(v1) + suffix : NO_CHANGE;\n}\n/**\n * Creates an interpolation binding with 3 expressions.\n */\n\n\nfunction interpolation3(lView, prefix, v0, i0, v1, i1, v2, suffix) {\n  var bindingIndex = getBindingIndex();\n  var different = bindingUpdated3(lView, bindingIndex, v0, v1, v2);\n  incrementBindingIndex(3);\n  return different ? prefix + renderStringify(v0) + i0 + renderStringify(v1) + i1 + renderStringify(v2) + suffix : NO_CHANGE;\n}\n/**\n * Create an interpolation binding with 4 expressions.\n */\n\n\nfunction interpolation4(lView, prefix, v0, i0, v1, i1, v2, i2, v3, suffix) {\n  var bindingIndex = getBindingIndex();\n  var different = bindingUpdated4(lView, bindingIndex, v0, v1, v2, v3);\n  incrementBindingIndex(4);\n  return different ? prefix + renderStringify(v0) + i0 + renderStringify(v1) + i1 + renderStringify(v2) + i2 + renderStringify(v3) + suffix : NO_CHANGE;\n}\n/**\n * Creates an interpolation binding with 5 expressions.\n */\n\n\nfunction interpolation5(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix) {\n  var bindingIndex = getBindingIndex();\n  var different = bindingUpdated4(lView, bindingIndex, v0, v1, v2, v3);\n  different = bindingUpdated(lView, bindingIndex + 4, v4) || different;\n  incrementBindingIndex(5);\n  return different ? prefix + renderStringify(v0) + i0 + renderStringify(v1) + i1 + renderStringify(v2) + i2 + renderStringify(v3) + i3 + renderStringify(v4) + suffix : NO_CHANGE;\n}\n/**\n * Creates an interpolation binding with 6 expressions.\n */\n\n\nfunction interpolation6(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix) {\n  var bindingIndex = getBindingIndex();\n  var different = bindingUpdated4(lView, bindingIndex, v0, v1, v2, v3);\n  different = bindingUpdated2(lView, bindingIndex + 4, v4, v5) || different;\n  incrementBindingIndex(6);\n  return different ? prefix + renderStringify(v0) + i0 + renderStringify(v1) + i1 + renderStringify(v2) + i2 + renderStringify(v3) + i3 + renderStringify(v4) + i4 + renderStringify(v5) + suffix : NO_CHANGE;\n}\n/**\n * Creates an interpolation binding with 7 expressions.\n */\n\n\nfunction interpolation7(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix) {\n  var bindingIndex = getBindingIndex();\n  var different = bindingUpdated4(lView, bindingIndex, v0, v1, v2, v3);\n  different = bindingUpdated3(lView, bindingIndex + 4, v4, v5, v6) || different;\n  incrementBindingIndex(7);\n  return different ? prefix + renderStringify(v0) + i0 + renderStringify(v1) + i1 + renderStringify(v2) + i2 + renderStringify(v3) + i3 + renderStringify(v4) + i4 + renderStringify(v5) + i5 + renderStringify(v6) + suffix : NO_CHANGE;\n}\n/**\n * Creates an interpolation binding with 8 expressions.\n */\n\n\nfunction interpolation8(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix) {\n  var bindingIndex = getBindingIndex();\n  var different = bindingUpdated4(lView, bindingIndex, v0, v1, v2, v3);\n  different = bindingUpdated4(lView, bindingIndex + 4, v4, v5, v6, v7) || different;\n  incrementBindingIndex(8);\n  return different ? prefix + renderStringify(v0) + i0 + renderStringify(v1) + i1 + renderStringify(v2) + i2 + renderStringify(v3) + i3 + renderStringify(v4) + i4 + renderStringify(v5) + i5 + renderStringify(v6) + i6 + renderStringify(v7) + suffix : NO_CHANGE;\n}\n/**\n *\n * Update an interpolated attribute on an element with single bound value surrounded by text.\n *\n * Used when the value passed to a property has 1 interpolated value in it:\n *\n * ```html\n * <div attr.title=\"prefix{{v0}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolate1('title', 'prefix', v0, 'suffix');\n * ```\n *\n * @param attrName The name of the attribute to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵattributeInterpolate1(attrName, prefix, v0, suffix, sanitizer, namespace) {\n  var lView = getLView();\n  var interpolatedValue = interpolation1(lView, prefix, v0, suffix);\n\n  if (interpolatedValue !== NO_CHANGE) {\n    var tNode = getSelectedTNode();\n    elementAttributeInternal(tNode, lView, attrName, interpolatedValue, sanitizer, namespace);\n    ngDevMode && storePropertyBindingMetadata(getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - 1, prefix, suffix);\n  }\n\n  return ɵɵattributeInterpolate1;\n}\n/**\n *\n * Update an interpolated attribute on an element with 2 bound values surrounded by text.\n *\n * Used when the value passed to a property has 2 interpolated values in it:\n *\n * ```html\n * <div attr.title=\"prefix{{v0}}-{{v1}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolate2('title', 'prefix', v0, '-', v1, 'suffix');\n * ```\n *\n * @param attrName The name of the attribute to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵattributeInterpolate2(attrName, prefix, v0, i0, v1, suffix, sanitizer, namespace) {\n  var lView = getLView();\n  var interpolatedValue = interpolation2(lView, prefix, v0, i0, v1, suffix);\n\n  if (interpolatedValue !== NO_CHANGE) {\n    var tNode = getSelectedTNode();\n    elementAttributeInternal(tNode, lView, attrName, interpolatedValue, sanitizer, namespace);\n    ngDevMode && storePropertyBindingMetadata(getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - 2, prefix, i0, suffix);\n  }\n\n  return ɵɵattributeInterpolate2;\n}\n/**\n *\n * Update an interpolated attribute on an element with 3 bound values surrounded by text.\n *\n * Used when the value passed to a property has 3 interpolated values in it:\n *\n * ```html\n * <div attr.title=\"prefix{{v0}}-{{v1}}-{{v2}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolate3(\n * 'title', 'prefix', v0, '-', v1, '-', v2, 'suffix');\n * ```\n *\n * @param attrName The name of the attribute to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵattributeInterpolate3(attrName, prefix, v0, i0, v1, i1, v2, suffix, sanitizer, namespace) {\n  var lView = getLView();\n  var interpolatedValue = interpolation3(lView, prefix, v0, i0, v1, i1, v2, suffix);\n\n  if (interpolatedValue !== NO_CHANGE) {\n    var tNode = getSelectedTNode();\n    elementAttributeInternal(tNode, lView, attrName, interpolatedValue, sanitizer, namespace);\n    ngDevMode && storePropertyBindingMetadata(getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - 3, prefix, i0, i1, suffix);\n  }\n\n  return ɵɵattributeInterpolate3;\n}\n/**\n *\n * Update an interpolated attribute on an element with 4 bound values surrounded by text.\n *\n * Used when the value passed to a property has 4 interpolated values in it:\n *\n * ```html\n * <div attr.title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolate4(\n * 'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, 'suffix');\n * ```\n *\n * @param attrName The name of the attribute to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵattributeInterpolate4(attrName, prefix, v0, i0, v1, i1, v2, i2, v3, suffix, sanitizer, namespace) {\n  var lView = getLView();\n  var interpolatedValue = interpolation4(lView, prefix, v0, i0, v1, i1, v2, i2, v3, suffix);\n\n  if (interpolatedValue !== NO_CHANGE) {\n    var tNode = getSelectedTNode();\n    elementAttributeInternal(tNode, lView, attrName, interpolatedValue, sanitizer, namespace);\n    ngDevMode && storePropertyBindingMetadata(getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - 4, prefix, i0, i1, i2, suffix);\n  }\n\n  return ɵɵattributeInterpolate4;\n}\n/**\n *\n * Update an interpolated attribute on an element with 5 bound values surrounded by text.\n *\n * Used when the value passed to a property has 5 interpolated values in it:\n *\n * ```html\n * <div attr.title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolate5(\n * 'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, 'suffix');\n * ```\n *\n * @param attrName The name of the attribute to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵattributeInterpolate5(attrName, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix, sanitizer, namespace) {\n  var lView = getLView();\n  var interpolatedValue = interpolation5(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix);\n\n  if (interpolatedValue !== NO_CHANGE) {\n    var tNode = getSelectedTNode();\n    elementAttributeInternal(tNode, lView, attrName, interpolatedValue, sanitizer, namespace);\n    ngDevMode && storePropertyBindingMetadata(getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - 5, prefix, i0, i1, i2, i3, suffix);\n  }\n\n  return ɵɵattributeInterpolate5;\n}\n/**\n *\n * Update an interpolated attribute on an element with 6 bound values surrounded by text.\n *\n * Used when the value passed to a property has 6 interpolated values in it:\n *\n * ```html\n * <div attr.title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolate6(\n *    'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, 'suffix');\n * ```\n *\n * @param attrName The name of the attribute to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵattributeInterpolate6(attrName, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix, sanitizer, namespace) {\n  var lView = getLView();\n  var interpolatedValue = interpolation6(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix);\n\n  if (interpolatedValue !== NO_CHANGE) {\n    var tNode = getSelectedTNode();\n    elementAttributeInternal(tNode, lView, attrName, interpolatedValue, sanitizer, namespace);\n    ngDevMode && storePropertyBindingMetadata(getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - 6, prefix, i0, i1, i2, i3, i4, suffix);\n  }\n\n  return ɵɵattributeInterpolate6;\n}\n/**\n *\n * Update an interpolated attribute on an element with 7 bound values surrounded by text.\n *\n * Used when the value passed to a property has 7 interpolated values in it:\n *\n * ```html\n * <div attr.title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolate7(\n *    'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, 'suffix');\n * ```\n *\n * @param attrName The name of the attribute to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵattributeInterpolate7(attrName, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix, sanitizer, namespace) {\n  var lView = getLView();\n  var interpolatedValue = interpolation7(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix);\n\n  if (interpolatedValue !== NO_CHANGE) {\n    var tNode = getSelectedTNode();\n    elementAttributeInternal(tNode, lView, attrName, interpolatedValue, sanitizer, namespace);\n    ngDevMode && storePropertyBindingMetadata(getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - 7, prefix, i0, i1, i2, i3, i4, i5, suffix);\n  }\n\n  return ɵɵattributeInterpolate7;\n}\n/**\n *\n * Update an interpolated attribute on an element with 8 bound values surrounded by text.\n *\n * Used when the value passed to a property has 8 interpolated values in it:\n *\n * ```html\n * <div attr.title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolate8(\n *  'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, 'suffix');\n * ```\n *\n * @param attrName The name of the attribute to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param i6 Static value used for concatenation only.\n * @param v7 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵattributeInterpolate8(attrName, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix, sanitizer, namespace) {\n  var lView = getLView();\n  var interpolatedValue = interpolation8(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix);\n\n  if (interpolatedValue !== NO_CHANGE) {\n    var tNode = getSelectedTNode();\n    elementAttributeInternal(tNode, lView, attrName, interpolatedValue, sanitizer, namespace);\n    ngDevMode && storePropertyBindingMetadata(getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - 8, prefix, i0, i1, i2, i3, i4, i5, i6, suffix);\n  }\n\n  return ɵɵattributeInterpolate8;\n}\n/**\n * Update an interpolated attribute on an element with 9 or more bound values surrounded by text.\n *\n * Used when the number of interpolated values exceeds 8.\n *\n * ```html\n * <div\n *  title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}-{{v8}}-{{v9}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵattributeInterpolateV(\n *  'title', ['prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, '-', v9,\n *  'suffix']);\n * ```\n *\n * @param attrName The name of the attribute to update.\n * @param values The collection of values and the strings in-between those values, beginning with\n * a string prefix and ending with a string suffix.\n * (e.g. `['prefix', value0, '-', value1, '-', value2, ..., value99, 'suffix']`)\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵattributeInterpolateV(attrName, values, sanitizer, namespace) {\n  var lView = getLView();\n  var interpolated = interpolationV(lView, values);\n\n  if (interpolated !== NO_CHANGE) {\n    var tNode = getSelectedTNode();\n    elementAttributeInternal(tNode, lView, attrName, interpolated, sanitizer, namespace);\n\n    if (ngDevMode) {\n      var interpolationInBetween = [values[0]]; // prefix\n\n      for (var i = 2; i < values.length; i += 2) {\n        interpolationInBetween.push(values[i]);\n      }\n\n      storePropertyBindingMetadata.apply(void 0, [getTView().data, tNode, 'attr.' + attrName, getBindingIndex() - interpolationInBetween.length + 1].concat(interpolationInBetween));\n    }\n  }\n\n  return ɵɵattributeInterpolateV;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction templateFirstCreatePass(index, tView, lView, templateFn, decls, vars, tagName, attrsIndex, localRefsIndex) {\n  ngDevMode && assertFirstCreatePass(tView);\n  ngDevMode && ngDevMode.firstCreatePass++;\n  var tViewConsts = tView.consts; // TODO(pk): refactor getOrCreateTNode to have the \"create\" only version\n\n  var tNode = getOrCreateTNode(tView, index, 4\n  /* Container */\n  , tagName || null, getConstant(tViewConsts, attrsIndex));\n  resolveDirectives(tView, lView, tNode, getConstant(tViewConsts, localRefsIndex));\n  registerPostOrderHooks(tView, tNode);\n  var embeddedTView = tNode.tViews = createTView(2\n  /* Embedded */\n  , tNode, templateFn, decls, vars, tView.directiveRegistry, tView.pipeRegistry, null, tView.schemas, tViewConsts);\n\n  if (tView.queries !== null) {\n    tView.queries.template(tView, tNode);\n    embeddedTView.queries = tView.queries.embeddedTView(tNode);\n  }\n\n  return tNode;\n}\n/**\n * Creates an LContainer for an ng-template (dynamically-inserted view), e.g.\n *\n * <ng-template #foo>\n *    <div></div>\n * </ng-template>\n *\n * @param index The index of the container in the data array\n * @param templateFn Inline template\n * @param decls The number of nodes, local refs, and pipes for this template\n * @param vars The number of bindings for this template\n * @param tagName The name of the container element, if applicable\n * @param attrsIndex Index of template attributes in the `consts` array.\n * @param localRefs Index of the local references in the `consts` array.\n * @param localRefExtractor A function which extracts local-refs values from the template.\n *        Defaults to the current element associated with the local-ref.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵtemplate(index, templateFn, decls, vars, tagName, attrsIndex, localRefsIndex, localRefExtractor) {\n  var lView = getLView();\n  var tView = getTView();\n  var adjustedIndex = index + HEADER_OFFSET;\n  var tNode = tView.firstCreatePass ? templateFirstCreatePass(adjustedIndex, tView, lView, templateFn, decls, vars, tagName, attrsIndex, localRefsIndex) : tView.data[adjustedIndex];\n  setCurrentTNode(tNode, false);\n  var comment = lView[RENDERER].createComment(ngDevMode ? 'container' : '');\n  appendChild(tView, lView, comment, tNode);\n  attachPatchData(comment, lView);\n  addToViewTree(lView, lView[adjustedIndex] = createLContainer(comment, lView, comment, tNode));\n\n  if (isDirectiveHost(tNode)) {\n    createDirectivesInstances(tView, lView, tNode);\n  }\n\n  if (localRefsIndex != null) {\n    saveResolvedLocalsInData(lView, tNode, localRefExtractor);\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/** Store a value in the `data` at a given `index`. */\n\n\nfunction store(tView, lView, index, value) {\n  // We don't store any static data for local variables, so the first time\n  // we see the template, we should store as null to avoid a sparse array\n  if (index >= tView.data.length) {\n    tView.data[index] = null;\n    tView.blueprint[index] = null;\n  }\n\n  lView[index] = value;\n}\n/**\n * Retrieves a local reference from the current contextViewData.\n *\n * If the reference to retrieve is in a parent view, this instruction is used in conjunction\n * with a nextContext() call, which walks up the tree and updates the contextViewData instance.\n *\n * @param index The index of the local ref in contextViewData.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵreference(index) {\n  var contextLView = getContextLView();\n  return load(contextLView, HEADER_OFFSET + index);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A mapping of the @angular/core API surface used in generated expressions to the actual symbols.\n *\n * This should be kept up to date with the public exports of @angular/core.\n */\n\n\nvar angularCoreDiEnv = {\n  'ɵɵdefineInjectable': ɵɵdefineInjectable,\n  'ɵɵdefineInjector': ɵɵdefineInjector,\n  'ɵɵinject': ɵɵinject,\n  'ɵɵgetFactoryOf': getFactoryOf,\n  'ɵɵinvalidFactoryDep': ɵɵinvalidFactoryDep\n};\n\nfunction getFactoryOf(type) {\n  var typeAny = type;\n\n  if (isForwardRef(type)) {\n    return function () {\n      var factory = getFactoryOf(resolveForwardRef(typeAny));\n      return factory ? factory() : null;\n    };\n  }\n\n  var def = getInjectableDef(typeAny) || getInjectorDef(typeAny);\n\n  if (!def || def.factory === undefined) {\n    return null;\n  }\n\n  return def.factory;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Compile an Angular injectable according to its `Injectable` metadata, and patch the resulting\n * injectable def (`ɵprov`) onto the injectable type.\n */\n\n\nfunction compileInjectable(type, srcMeta) {\n  var ngInjectableDef = null;\n  var ngFactoryDef = null; // if NG_PROV_DEF is already defined on this class then don't overwrite it\n\n  if (!type.hasOwnProperty(NG_PROV_DEF)) {\n    Object.defineProperty(type, NG_PROV_DEF, {\n      get: function get() {\n        if (ngInjectableDef === null) {\n          ngInjectableDef = getCompilerFacade().compileInjectable(angularCoreDiEnv, \"ng:///\".concat(type.name, \"/\\u0275prov.js\"), getInjectableMetadata(type, srcMeta));\n        }\n\n        return ngInjectableDef;\n      }\n    });\n  } // if NG_FACTORY_DEF is already defined on this class then don't overwrite it\n\n\n  if (!type.hasOwnProperty(NG_FACTORY_DEF)) {\n    Object.defineProperty(type, NG_FACTORY_DEF, {\n      get: function get() {\n        if (ngFactoryDef === null) {\n          var metadata = getInjectableMetadata(type, srcMeta);\n          var compiler = getCompilerFacade();\n          ngFactoryDef = compiler.compileFactory(angularCoreDiEnv, \"ng:///\".concat(type.name, \"/\\u0275fac.js\"), {\n            name: metadata.name,\n            type: metadata.type,\n            typeArgumentCount: metadata.typeArgumentCount,\n            deps: reflectDependencies(type),\n            injectFn: 'inject',\n            target: compiler.R3FactoryTarget.Injectable\n          });\n        }\n\n        return ngFactoryDef;\n      },\n      // Leave this configurable so that the factories from directives or pipes can take precedence.\n      configurable: true\n    });\n  }\n}\n\nvar ɵ0$8 = getClosureSafeProperty;\nvar USE_VALUE$1 = getClosureSafeProperty({\n  provide: String,\n  useValue: ɵ0$8\n});\n\nfunction isUseClassProvider(meta) {\n  return meta.useClass !== undefined;\n}\n\nfunction isUseValueProvider(meta) {\n  return USE_VALUE$1 in meta;\n}\n\nfunction isUseFactoryProvider(meta) {\n  return meta.useFactory !== undefined;\n}\n\nfunction isUseExistingProvider(meta) {\n  return meta.useExisting !== undefined;\n}\n\nfunction getInjectableMetadata(type, srcMeta) {\n  // Allow the compilation of a class with a `@Injectable()` decorator without parameters\n  var meta = srcMeta || {\n    providedIn: null\n  };\n  var compilerMeta = {\n    name: type.name,\n    type: type,\n    typeArgumentCount: 0,\n    providedIn: meta.providedIn,\n    userDeps: undefined\n  };\n\n  if ((isUseClassProvider(meta) || isUseFactoryProvider(meta)) && meta.deps !== undefined) {\n    compilerMeta.userDeps = convertDependencies(meta.deps);\n  }\n\n  if (isUseClassProvider(meta)) {\n    // The user explicitly specified useClass, and may or may not have provided deps.\n    compilerMeta.useClass = resolveForwardRef(meta.useClass);\n  } else if (isUseValueProvider(meta)) {\n    // The user explicitly specified useValue.\n    compilerMeta.useValue = resolveForwardRef(meta.useValue);\n  } else if (isUseFactoryProvider(meta)) {\n    // The user explicitly specified useFactory.\n    compilerMeta.useFactory = meta.useFactory;\n  } else if (isUseExistingProvider(meta)) {\n    // The user explicitly specified useExisting.\n    compilerMeta.useExisting = resolveForwardRef(meta.useExisting);\n  }\n\n  return compilerMeta;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ɵ0$9 = getClosureSafeProperty;\nvar USE_VALUE$2 = getClosureSafeProperty({\n  provide: String,\n  useValue: ɵ0$9\n});\nvar EMPTY_ARRAY$2 = [];\n\nfunction convertInjectableProviderToFactory(type, provider) {\n  if (!provider) {\n    var reflectionCapabilities = new ReflectionCapabilities();\n    var deps = reflectionCapabilities.parameters(type); // TODO - convert to flags.\n\n    return function () {\n      return _construct(type, _toConsumableArray(injectArgs(deps)));\n    };\n  }\n\n  if (USE_VALUE$2 in provider) {\n    var valueProvider = provider;\n    return function () {\n      return valueProvider.useValue;\n    };\n  } else if (provider.useExisting) {\n    var existingProvider = provider;\n    return function () {\n      return ɵɵinject(resolveForwardRef(existingProvider.useExisting));\n    };\n  } else if (provider.useFactory) {\n    var factoryProvider = provider;\n    return function () {\n      return factoryProvider.useFactory.apply(factoryProvider, _toConsumableArray(injectArgs(factoryProvider.deps || EMPTY_ARRAY$2)));\n    };\n  } else if (provider.useClass) {\n    var classProvider = provider;\n    var _deps = provider.deps;\n\n    if (!_deps) {\n      var _reflectionCapabilities = new ReflectionCapabilities();\n\n      _deps = _reflectionCapabilities.parameters(type);\n    }\n\n    return function () {\n      return _construct(resolveForwardRef(classProvider.useClass), _toConsumableArray(injectArgs(_deps)));\n    };\n  } else {\n    var _deps2 = provider.deps;\n\n    if (!_deps2) {\n      var _reflectionCapabilities2 = new ReflectionCapabilities();\n\n      _deps2 = _reflectionCapabilities2.parameters(type);\n    }\n\n    return function () {\n      return _construct(type, _toConsumableArray(injectArgs(_deps2)));\n    };\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ɵ0$a = function ɵ0$a(type, meta) {\n  return SWITCH_COMPILE_INJECTABLE(type, meta);\n};\n/**\n * Injectable decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\n\nvar Injectable = makeDecorator('Injectable', undefined, undefined, undefined, ɵ0$a);\n/**\n * Supports @Injectable() in JIT mode for Render2.\n */\n\nfunction render2CompileInjectable(injectableType, options) {\n  if (options && options.providedIn !== undefined && !getInjectableDef(injectableType)) {\n    injectableType.ɵprov = ɵɵdefineInjectable({\n      token: injectableType,\n      providedIn: options.providedIn,\n      factory: convertInjectableProviderToFactory(injectableType, options)\n    });\n  }\n}\n\nvar SWITCH_COMPILE_INJECTABLE__POST_R3__ = compileInjectable;\nvar SWITCH_COMPILE_INJECTABLE__PRE_R3__ = render2CompileInjectable;\nvar SWITCH_COMPILE_INJECTABLE = SWITCH_COMPILE_INJECTABLE__PRE_R3__;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nfunction findFirstClosedCycle(keys) {\n  var res = [];\n\n  for (var i = 0; i < keys.length; ++i) {\n    if (res.indexOf(keys[i]) > -1) {\n      res.push(keys[i]);\n      return res;\n    }\n\n    res.push(keys[i]);\n  }\n\n  return res;\n}\n\nfunction constructResolvingPath(keys) {\n  if (keys.length > 1) {\n    var reversed = findFirstClosedCycle(keys.slice().reverse());\n    var tokenStrs = reversed.map(function (k) {\n      return stringify(k.token);\n    });\n    return ' (' + tokenStrs.join(' -> ') + ')';\n  }\n\n  return '';\n}\n\nfunction injectionError(injector, key, constructResolvingMessage, originalError) {\n  var keys = [key];\n  var errMsg = constructResolvingMessage(keys);\n  var error = originalError ? wrappedError(errMsg, originalError) : Error(errMsg);\n  error.addKey = addKey;\n  error.keys = keys;\n  error.injectors = [injector];\n  error.constructResolvingMessage = constructResolvingMessage;\n  error[ERROR_ORIGINAL_ERROR] = originalError;\n  return error;\n}\n\nfunction addKey(injector, key) {\n  this.injectors.push(injector);\n  this.keys.push(key); // Note: This updated message won't be reflected in the `.stack` property\n\n  this.message = this.constructResolvingMessage(this.keys);\n}\n/**\n * Thrown when trying to retrieve a dependency by key from {@link Injector}, but the\n * {@link Injector} does not have a {@link Provider} for the given key.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * class A {\n *   constructor(b:B) {}\n * }\n *\n * expect(() => Injector.resolveAndCreate([A])).toThrowError();\n * ```\n */\n\n\nfunction noProviderError(injector, key) {\n  return injectionError(injector, key, function (keys) {\n    var first = stringify(keys[0].token);\n    return \"No provider for \".concat(first, \"!\").concat(constructResolvingPath(keys));\n  });\n}\n/**\n * Thrown when dependencies form a cycle.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * var injector = Injector.resolveAndCreate([\n *   {provide: \"one\", useFactory: (two) => \"two\", deps: [[new Inject(\"two\")]]},\n *   {provide: \"two\", useFactory: (one) => \"one\", deps: [[new Inject(\"one\")]]}\n * ]);\n *\n * expect(() => injector.get(\"one\")).toThrowError();\n * ```\n *\n * Retrieving `A` or `B` throws a `CyclicDependencyError` as the graph above cannot be constructed.\n */\n\n\nfunction cyclicDependencyError(injector, key) {\n  return injectionError(injector, key, function (keys) {\n    return \"Cannot instantiate cyclic dependency!\".concat(constructResolvingPath(keys));\n  });\n}\n/**\n * Thrown when a constructing type returns with an Error.\n *\n * The `InstantiationError` class contains the original error plus the dependency graph which caused\n * this object to be instantiated.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * class A {\n *   constructor() {\n *     throw new Error('message');\n *   }\n * }\n *\n * var injector = Injector.resolveAndCreate([A]);\n\n * try {\n *   injector.get(A);\n * } catch (e) {\n *   expect(e instanceof InstantiationError).toBe(true);\n *   expect(e.originalException.message).toEqual(\"message\");\n *   expect(e.originalStack).toBeDefined();\n * }\n * ```\n */\n\n\nfunction instantiationError(injector, originalException, originalStack, key) {\n  return injectionError(injector, key, function (keys) {\n    var first = stringify(keys[0].token);\n    return \"\".concat(originalException.message, \": Error during instantiation of \").concat(first, \"!\").concat(constructResolvingPath(keys), \".\");\n  }, originalException);\n}\n/**\n * Thrown when an object other then {@link Provider} (or `Type`) is passed to {@link Injector}\n * creation.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * expect(() => Injector.resolveAndCreate([\"not a type\"])).toThrowError();\n * ```\n */\n\n\nfunction invalidProviderError(provider) {\n  return Error(\"Invalid provider - only instances of Provider and Type are allowed, got: \".concat(provider));\n}\n/**\n * Thrown when the class has no annotation information.\n *\n * Lack of annotation information prevents the {@link Injector} from determining which dependencies\n * need to be injected into the constructor.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * class A {\n *   constructor(b) {}\n * }\n *\n * expect(() => Injector.resolveAndCreate([A])).toThrowError();\n * ```\n *\n * This error is also thrown when the class not marked with {@link Injectable} has parameter types.\n *\n * ```typescript\n * class B {}\n *\n * class A {\n *   constructor(b:B) {} // no information about the parameter types of A is available at runtime.\n * }\n *\n * expect(() => Injector.resolveAndCreate([A,B])).toThrowError();\n * ```\n *\n */\n\n\nfunction noAnnotationError(typeOrFunc, params) {\n  var signature = [];\n\n  for (var i = 0, ii = params.length; i < ii; i++) {\n    var parameter = params[i];\n\n    if (!parameter || parameter.length == 0) {\n      signature.push('?');\n    } else {\n      signature.push(parameter.map(stringify).join(' '));\n    }\n  }\n\n  return Error('Cannot resolve all parameters for \\'' + stringify(typeOrFunc) + '\\'(' + signature.join(', ') + '). ' + 'Make sure that all the parameters are decorated with Inject or have valid type annotations and that \\'' + stringify(typeOrFunc) + '\\' is decorated with Injectable.');\n}\n/**\n * Thrown when getting an object by index.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * class A {}\n *\n * var injector = Injector.resolveAndCreate([A]);\n *\n * expect(() => injector.getAt(100)).toThrowError();\n * ```\n *\n */\n\n\nfunction outOfBoundsError(index) {\n  return Error(\"Index \".concat(index, \" is out-of-bounds.\"));\n} // TODO: add a working example after alpha38 is released\n\n/**\n * Thrown when a multi provider and a regular provider are bound to the same token.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * expect(() => Injector.resolveAndCreate([\n *   { provide: \"Strings\", useValue: \"string1\", multi: true},\n *   { provide: \"Strings\", useValue: \"string2\", multi: false}\n * ])).toThrowError();\n * ```\n */\n\n\nfunction mixingMultiProvidersWithRegularProvidersError(provider1, provider2) {\n  return Error(\"Cannot mix multi providers and regular providers, got: \".concat(provider1, \" \").concat(provider2));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A unique object used for retrieving items from the {@link ReflectiveInjector}.\n *\n * Keys have:\n * - a system-wide unique `id`.\n * - a `token`.\n *\n * `Key` is used internally by {@link ReflectiveInjector} because its system-wide unique `id` allows\n * the\n * injector to store created objects in a more efficient way.\n *\n * `Key` should not be created directly. {@link ReflectiveInjector} creates keys automatically when\n * resolving\n * providers.\n *\n * @deprecated No replacement\n * @publicApi\n */\n\n\nvar ReflectiveKey = /*#__PURE__*/function () {\n  /**\n   * Private\n   */\n  function ReflectiveKey(token, id) {\n    _classCallCheck(this, ReflectiveKey);\n\n    this.token = token;\n    this.id = id;\n\n    if (!token) {\n      throw new Error('Token must be defined!');\n    }\n\n    this.displayName = stringify(this.token);\n  }\n  /**\n   * Retrieves a `Key` for a token.\n   */\n\n\n  _createClass2(ReflectiveKey, null, [{\n    key: \"get\",\n    value: function get(token) {\n      return _globalKeyRegistry.get(resolveForwardRef(token));\n    }\n    /**\n     * @returns the number of keys registered in the system.\n     */\n\n  }, {\n    key: \"numberOfKeys\",\n    get: function get() {\n      return _globalKeyRegistry.numberOfKeys;\n    }\n  }]);\n\n  return ReflectiveKey;\n}();\n\nvar KeyRegistry = /*#__PURE__*/function () {\n  function KeyRegistry() {\n    _classCallCheck(this, KeyRegistry);\n\n    this._allKeys = new Map();\n  }\n\n  _createClass2(KeyRegistry, [{\n    key: \"get\",\n    value: function get(token) {\n      if (token instanceof ReflectiveKey) return token;\n\n      if (this._allKeys.has(token)) {\n        return this._allKeys.get(token);\n      }\n\n      var newKey = new ReflectiveKey(token, ReflectiveKey.numberOfKeys);\n\n      this._allKeys.set(token, newKey);\n\n      return newKey;\n    }\n  }, {\n    key: \"numberOfKeys\",\n    get: function get() {\n      return this._allKeys.size;\n    }\n  }]);\n\n  return KeyRegistry;\n}();\n\nvar _globalKeyRegistry = new KeyRegistry();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Provides access to reflection data about symbols. Used internally by Angular\n * to power dependency injection and compilation.\n */\n\n\nvar Reflector = /*#__PURE__*/function () {\n  function Reflector(reflectionCapabilities) {\n    _classCallCheck(this, Reflector);\n\n    this.reflectionCapabilities = reflectionCapabilities;\n  }\n\n  _createClass2(Reflector, [{\n    key: \"updateCapabilities\",\n    value: function updateCapabilities(caps) {\n      this.reflectionCapabilities = caps;\n    }\n  }, {\n    key: \"factory\",\n    value: function factory(type) {\n      return this.reflectionCapabilities.factory(type);\n    }\n  }, {\n    key: \"parameters\",\n    value: function parameters(typeOrFunc) {\n      return this.reflectionCapabilities.parameters(typeOrFunc);\n    }\n  }, {\n    key: \"annotations\",\n    value: function annotations(typeOrFunc) {\n      return this.reflectionCapabilities.annotations(typeOrFunc);\n    }\n  }, {\n    key: \"propMetadata\",\n    value: function propMetadata(typeOrFunc) {\n      return this.reflectionCapabilities.propMetadata(typeOrFunc);\n    }\n  }, {\n    key: \"hasLifecycleHook\",\n    value: function hasLifecycleHook(type, lcProperty) {\n      return this.reflectionCapabilities.hasLifecycleHook(type, lcProperty);\n    }\n  }, {\n    key: \"getter\",\n    value: function getter(name) {\n      return this.reflectionCapabilities.getter(name);\n    }\n  }, {\n    key: \"setter\",\n    value: function setter(name) {\n      return this.reflectionCapabilities.setter(name);\n    }\n  }, {\n    key: \"method\",\n    value: function method(name) {\n      return this.reflectionCapabilities.method(name);\n    }\n  }, {\n    key: \"importUri\",\n    value: function importUri(type) {\n      return this.reflectionCapabilities.importUri(type);\n    }\n  }, {\n    key: \"resourceUri\",\n    value: function resourceUri(type) {\n      return this.reflectionCapabilities.resourceUri(type);\n    }\n  }, {\n    key: \"resolveIdentifier\",\n    value: function resolveIdentifier(name, moduleUrl, members, runtime) {\n      return this.reflectionCapabilities.resolveIdentifier(name, moduleUrl, members, runtime);\n    }\n  }, {\n    key: \"resolveEnum\",\n    value: function resolveEnum(identifier, name) {\n      return this.reflectionCapabilities.resolveEnum(identifier, name);\n    }\n  }]);\n\n  return Reflector;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * The {@link Reflector} used internally in Angular to access metadata\n * about symbols.\n */\n\n\nvar reflector = new Reflector(new ReflectionCapabilities());\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * `Dependency` is used by the framework to extend DI.\n * This is internal to Angular and should not be used directly.\n */\n\nvar ReflectiveDependency = /*#__PURE__*/function () {\n  function ReflectiveDependency(key, optional, visibility) {\n    _classCallCheck(this, ReflectiveDependency);\n\n    this.key = key;\n    this.optional = optional;\n    this.visibility = visibility;\n  }\n\n  _createClass2(ReflectiveDependency, null, [{\n    key: \"fromKey\",\n    value: function fromKey(key) {\n      return new ReflectiveDependency(key, false, null);\n    }\n  }]);\n\n  return ReflectiveDependency;\n}();\n\nvar _EMPTY_LIST = [];\n\nvar ResolvedReflectiveProvider_ = /*#__PURE__*/_createClass2(function ResolvedReflectiveProvider_(key, resolvedFactories, multiProvider) {\n  _classCallCheck(this, ResolvedReflectiveProvider_);\n\n  this.key = key;\n  this.resolvedFactories = resolvedFactories;\n  this.multiProvider = multiProvider;\n  this.resolvedFactory = this.resolvedFactories[0];\n});\n/**\n * An internal resolved representation of a factory function created by resolving `Provider`.\n * @publicApi\n */\n\n\nvar ResolvedReflectiveFactory = /*#__PURE__*/_createClass2(function ResolvedReflectiveFactory(\n/**\n * Factory function which can return an instance of an object represented by a key.\n */\nfactory,\n/**\n * Arguments (dependencies) to the `factory` function.\n */\ndependencies) {\n  _classCallCheck(this, ResolvedReflectiveFactory);\n\n  this.factory = factory;\n  this.dependencies = dependencies;\n});\n/**\n * Resolve a single provider.\n */\n\n\nfunction resolveReflectiveFactory(provider) {\n  var factoryFn;\n  var resolvedDeps;\n\n  if (provider.useClass) {\n    var useClass = resolveForwardRef(provider.useClass);\n    factoryFn = reflector.factory(useClass);\n    resolvedDeps = _dependenciesFor(useClass);\n  } else if (provider.useExisting) {\n    factoryFn = function factoryFn(aliasInstance) {\n      return aliasInstance;\n    };\n\n    resolvedDeps = [ReflectiveDependency.fromKey(ReflectiveKey.get(provider.useExisting))];\n  } else if (provider.useFactory) {\n    factoryFn = provider.useFactory;\n    resolvedDeps = constructDependencies(provider.useFactory, provider.deps);\n  } else {\n    factoryFn = function factoryFn() {\n      return provider.useValue;\n    };\n\n    resolvedDeps = _EMPTY_LIST;\n  }\n\n  return new ResolvedReflectiveFactory(factoryFn, resolvedDeps);\n}\n/**\n * Converts the `Provider` into `ResolvedProvider`.\n *\n * `Injector` internally only uses `ResolvedProvider`, `Provider` contains convenience provider\n * syntax.\n */\n\n\nfunction resolveReflectiveProvider(provider) {\n  return new ResolvedReflectiveProvider_(ReflectiveKey.get(provider.provide), [resolveReflectiveFactory(provider)], provider.multi || false);\n}\n/**\n * Resolve a list of Providers.\n */\n\n\nfunction resolveReflectiveProviders(providers) {\n  var normalized = _normalizeProviders(providers, []);\n\n  var resolved = normalized.map(resolveReflectiveProvider);\n  var resolvedProviderMap = mergeResolvedReflectiveProviders(resolved, new Map());\n  return Array.from(resolvedProviderMap.values());\n}\n/**\n * Merges a list of ResolvedProviders into a list where each key is contained exactly once and\n * multi providers have been merged.\n */\n\n\nfunction mergeResolvedReflectiveProviders(providers, normalizedProvidersMap) {\n  for (var i = 0; i < providers.length; i++) {\n    var provider = providers[i];\n    var existing = normalizedProvidersMap.get(provider.key.id);\n\n    if (existing) {\n      if (provider.multiProvider !== existing.multiProvider) {\n        throw mixingMultiProvidersWithRegularProvidersError(existing, provider);\n      }\n\n      if (provider.multiProvider) {\n        for (var j = 0; j < provider.resolvedFactories.length; j++) {\n          existing.resolvedFactories.push(provider.resolvedFactories[j]);\n        }\n      } else {\n        normalizedProvidersMap.set(provider.key.id, provider);\n      }\n    } else {\n      var resolvedProvider = void 0;\n\n      if (provider.multiProvider) {\n        resolvedProvider = new ResolvedReflectiveProvider_(provider.key, provider.resolvedFactories.slice(), provider.multiProvider);\n      } else {\n        resolvedProvider = provider;\n      }\n\n      normalizedProvidersMap.set(provider.key.id, resolvedProvider);\n    }\n  }\n\n  return normalizedProvidersMap;\n}\n\nfunction _normalizeProviders(providers, res) {\n  providers.forEach(function (b) {\n    if (b instanceof Type) {\n      res.push({\n        provide: b,\n        useClass: b\n      });\n    } else if (b && _typeof(b) == 'object' && b.provide !== undefined) {\n      res.push(b);\n    } else if (Array.isArray(b)) {\n      _normalizeProviders(b, res);\n    } else {\n      throw invalidProviderError(b);\n    }\n  });\n  return res;\n}\n\nfunction constructDependencies(typeOrFunc, dependencies) {\n  if (!dependencies) {\n    return _dependenciesFor(typeOrFunc);\n  } else {\n    var params = dependencies.map(function (t) {\n      return [t];\n    });\n    return dependencies.map(function (t) {\n      return _extractToken(typeOrFunc, t, params);\n    });\n  }\n}\n\nfunction _dependenciesFor(typeOrFunc) {\n  var params = reflector.parameters(typeOrFunc);\n  if (!params) return [];\n\n  if (params.some(function (p) {\n    return p == null;\n  })) {\n    throw noAnnotationError(typeOrFunc, params);\n  }\n\n  return params.map(function (p) {\n    return _extractToken(typeOrFunc, p, params);\n  });\n}\n\nfunction _extractToken(typeOrFunc, metadata, params) {\n  var token = null;\n  var optional = false;\n\n  if (!Array.isArray(metadata)) {\n    if (metadata instanceof Inject) {\n      return _createDependency(metadata.token, optional, null);\n    } else {\n      return _createDependency(metadata, optional, null);\n    }\n  }\n\n  var visibility = null;\n\n  for (var i = 0; i < metadata.length; ++i) {\n    var paramMetadata = metadata[i];\n\n    if (paramMetadata instanceof Type) {\n      token = paramMetadata;\n    } else if (paramMetadata instanceof Inject) {\n      token = paramMetadata.token;\n    } else if (paramMetadata instanceof Optional) {\n      optional = true;\n    } else if (paramMetadata instanceof Self || paramMetadata instanceof SkipSelf) {\n      visibility = paramMetadata;\n    } else if (paramMetadata instanceof InjectionToken) {\n      token = paramMetadata;\n    }\n  }\n\n  token = resolveForwardRef(token);\n\n  if (token != null) {\n    return _createDependency(token, optional, visibility);\n  } else {\n    throw noAnnotationError(typeOrFunc, params);\n  }\n}\n\nfunction _createDependency(token, optional, visibility) {\n  return new ReflectiveDependency(ReflectiveKey.get(token), optional, visibility);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// Threshold for the dynamic version\n\n\nvar UNDEFINED = {};\n/**\n * A ReflectiveDependency injection container used for instantiating objects and resolving\n * dependencies.\n *\n * An `Injector` is a replacement for a `new` operator, which can automatically resolve the\n * constructor dependencies.\n *\n * In typical use, application code asks for the dependencies in the constructor and they are\n * resolved by the `Injector`.\n *\n * @usageNotes\n * ### Example\n *\n * The following example creates an `Injector` configured to create `Engine` and `Car`.\n *\n * ```typescript\n * @Injectable()\n * class Engine {\n * }\n *\n * @Injectable()\n * class Car {\n *   constructor(public engine:Engine) {}\n * }\n *\n * var injector = ReflectiveInjector.resolveAndCreate([Car, Engine]);\n * var car = injector.get(Car);\n * expect(car instanceof Car).toBe(true);\n * expect(car.engine instanceof Engine).toBe(true);\n * ```\n *\n * Notice, we don't use the `new` operator because we explicitly want to have the `Injector`\n * resolve all of the object's dependencies automatically.\n *\n * @deprecated from v5 - slow and brings in a lot of code, Use `Injector.create` instead.\n * @publicApi\n */\n\nvar ReflectiveInjector = /*#__PURE__*/function () {\n  function ReflectiveInjector() {\n    _classCallCheck(this, ReflectiveInjector);\n  }\n\n  _createClass2(ReflectiveInjector, null, [{\n    key: \"resolve\",\n    value:\n    /**\n     * Turns an array of provider definitions into an array of resolved providers.\n     *\n     * A resolution is a process of flattening multiple nested arrays and converting individual\n     * providers into an array of `ResolvedReflectiveProvider`s.\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * ```typescript\n     * @Injectable()\n     * class Engine {\n     * }\n     *\n     * @Injectable()\n     * class Car {\n     *   constructor(public engine:Engine) {}\n     * }\n     *\n     * var providers = ReflectiveInjector.resolve([Car, [[Engine]]]);\n     *\n     * expect(providers.length).toEqual(2);\n     *\n     * expect(providers[0] instanceof ResolvedReflectiveProvider).toBe(true);\n     * expect(providers[0].key.displayName).toBe(\"Car\");\n     * expect(providers[0].dependencies.length).toEqual(1);\n     * expect(providers[0].factory).toBeDefined();\n     *\n     * expect(providers[1].key.displayName).toBe(\"Engine\");\n     * });\n     * ```\n     *\n     */\n    function resolve(providers) {\n      return resolveReflectiveProviders(providers);\n    }\n    /**\n     * Resolves an array of providers and creates an injector from those providers.\n     *\n     * The passed-in providers can be an array of `Type`, `Provider`,\n     * or a recursive array of more providers.\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * ```typescript\n     * @Injectable()\n     * class Engine {\n     * }\n     *\n     * @Injectable()\n     * class Car {\n     *   constructor(public engine:Engine) {}\n     * }\n     *\n     * var injector = ReflectiveInjector.resolveAndCreate([Car, Engine]);\n     * expect(injector.get(Car) instanceof Car).toBe(true);\n     * ```\n     */\n\n  }, {\n    key: \"resolveAndCreate\",\n    value: function resolveAndCreate(providers, parent) {\n      var ResolvedReflectiveProviders = ReflectiveInjector.resolve(providers);\n      return ReflectiveInjector.fromResolvedProviders(ResolvedReflectiveProviders, parent);\n    }\n    /**\n     * Creates an injector from previously resolved providers.\n     *\n     * This API is the recommended way to construct injectors in performance-sensitive parts.\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * ```typescript\n     * @Injectable()\n     * class Engine {\n     * }\n     *\n     * @Injectable()\n     * class Car {\n     *   constructor(public engine:Engine) {}\n     * }\n     *\n     * var providers = ReflectiveInjector.resolve([Car, Engine]);\n     * var injector = ReflectiveInjector.fromResolvedProviders(providers);\n     * expect(injector.get(Car) instanceof Car).toBe(true);\n     * ```\n     */\n\n  }, {\n    key: \"fromResolvedProviders\",\n    value: function fromResolvedProviders(providers, parent) {\n      return new ReflectiveInjector_(providers, parent);\n    }\n  }]);\n\n  return ReflectiveInjector;\n}();\n\nvar ReflectiveInjector_ = /*#__PURE__*/function () {\n  /**\n   * Private\n   */\n  function ReflectiveInjector_(_providers, _parent) {\n    _classCallCheck(this, ReflectiveInjector_);\n\n    /** @internal */\n    this._constructionCounter = 0;\n    this._providers = _providers;\n    this.parent = _parent || null;\n    var len = _providers.length;\n    this.keyIds = [];\n    this.objs = [];\n\n    for (var i = 0; i < len; i++) {\n      this.keyIds[i] = _providers[i].key.id;\n      this.objs[i] = UNDEFINED;\n    }\n  }\n\n  _createClass2(ReflectiveInjector_, [{\n    key: \"get\",\n    value: function get(token) {\n      var notFoundValue = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : THROW_IF_NOT_FOUND;\n      return this._getByKey(ReflectiveKey.get(token), null, notFoundValue);\n    }\n  }, {\n    key: \"resolveAndCreateChild\",\n    value: function resolveAndCreateChild(providers) {\n      var ResolvedReflectiveProviders = ReflectiveInjector.resolve(providers);\n      return this.createChildFromResolved(ResolvedReflectiveProviders);\n    }\n  }, {\n    key: \"createChildFromResolved\",\n    value: function createChildFromResolved(providers) {\n      var inj = new ReflectiveInjector_(providers);\n      inj.parent = this;\n      return inj;\n    }\n  }, {\n    key: \"resolveAndInstantiate\",\n    value: function resolveAndInstantiate(provider) {\n      return this.instantiateResolved(ReflectiveInjector.resolve([provider])[0]);\n    }\n  }, {\n    key: \"instantiateResolved\",\n    value: function instantiateResolved(provider) {\n      return this._instantiateProvider(provider);\n    }\n  }, {\n    key: \"getProviderAtIndex\",\n    value: function getProviderAtIndex(index) {\n      if (index < 0 || index >= this._providers.length) {\n        throw outOfBoundsError(index);\n      }\n\n      return this._providers[index];\n    }\n    /** @internal */\n\n  }, {\n    key: \"_new\",\n    value: function _new(provider) {\n      if (this._constructionCounter++ > this._getMaxNumberOfObjects()) {\n        throw cyclicDependencyError(this, provider.key);\n      }\n\n      return this._instantiateProvider(provider);\n    }\n  }, {\n    key: \"_getMaxNumberOfObjects\",\n    value: function _getMaxNumberOfObjects() {\n      return this.objs.length;\n    }\n  }, {\n    key: \"_instantiateProvider\",\n    value: function _instantiateProvider(provider) {\n      if (provider.multiProvider) {\n        var res = [];\n\n        for (var i = 0; i < provider.resolvedFactories.length; ++i) {\n          res[i] = this._instantiate(provider, provider.resolvedFactories[i]);\n        }\n\n        return res;\n      } else {\n        return this._instantiate(provider, provider.resolvedFactories[0]);\n      }\n    }\n  }, {\n    key: \"_instantiate\",\n    value: function _instantiate(provider, ResolvedReflectiveFactory) {\n      var _this5 = this;\n\n      var factory = ResolvedReflectiveFactory.factory;\n      var deps;\n\n      try {\n        deps = ResolvedReflectiveFactory.dependencies.map(function (dep) {\n          return _this5._getByReflectiveDependency(dep);\n        });\n      } catch (e) {\n        if (e.addKey) {\n          e.addKey(this, provider.key);\n        }\n\n        throw e;\n      }\n\n      var obj;\n\n      try {\n        obj = factory.apply(void 0, _toConsumableArray(deps));\n      } catch (e) {\n        throw instantiationError(this, e, e.stack, provider.key);\n      }\n\n      return obj;\n    }\n  }, {\n    key: \"_getByReflectiveDependency\",\n    value: function _getByReflectiveDependency(dep) {\n      return this._getByKey(dep.key, dep.visibility, dep.optional ? null : THROW_IF_NOT_FOUND);\n    }\n  }, {\n    key: \"_getByKey\",\n    value: function _getByKey(key, visibility, notFoundValue) {\n      if (key === ReflectiveInjector_.INJECTOR_KEY) {\n        return this;\n      }\n\n      if (visibility instanceof Self) {\n        return this._getByKeySelf(key, notFoundValue);\n      } else {\n        return this._getByKeyDefault(key, notFoundValue, visibility);\n      }\n    }\n  }, {\n    key: \"_getObjByKeyId\",\n    value: function _getObjByKeyId(keyId) {\n      for (var i = 0; i < this.keyIds.length; i++) {\n        if (this.keyIds[i] === keyId) {\n          if (this.objs[i] === UNDEFINED) {\n            this.objs[i] = this._new(this._providers[i]);\n          }\n\n          return this.objs[i];\n        }\n      }\n\n      return UNDEFINED;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_throwOrNull\",\n    value: function _throwOrNull(key, notFoundValue) {\n      if (notFoundValue !== THROW_IF_NOT_FOUND) {\n        return notFoundValue;\n      } else {\n        throw noProviderError(this, key);\n      }\n    }\n    /** @internal */\n\n  }, {\n    key: \"_getByKeySelf\",\n    value: function _getByKeySelf(key, notFoundValue) {\n      var obj = this._getObjByKeyId(key.id);\n\n      return obj !== UNDEFINED ? obj : this._throwOrNull(key, notFoundValue);\n    }\n    /** @internal */\n\n  }, {\n    key: \"_getByKeyDefault\",\n    value: function _getByKeyDefault(key, notFoundValue, visibility) {\n      var inj;\n\n      if (visibility instanceof SkipSelf) {\n        inj = this.parent;\n      } else {\n        inj = this;\n      }\n\n      while (inj instanceof ReflectiveInjector_) {\n        var inj_ = inj;\n\n        var obj = inj_._getObjByKeyId(key.id);\n\n        if (obj !== UNDEFINED) return obj;\n        inj = inj_.parent;\n      }\n\n      if (inj !== null) {\n        return inj.get(key.token, notFoundValue);\n      } else {\n        return this._throwOrNull(key, notFoundValue);\n      }\n    }\n  }, {\n    key: \"displayName\",\n    get: function get() {\n      var providers = _mapProviders(this, function (b) {\n        return ' \"' + b.key.displayName + '\" ';\n      }).join(', ');\n\n      return \"ReflectiveInjector(providers: [\".concat(providers, \"])\");\n    }\n  }, {\n    key: \"toString\",\n    value: function toString() {\n      return this.displayName;\n    }\n  }]);\n\n  return ReflectiveInjector_;\n}();\n\nReflectiveInjector_.INJECTOR_KEY = ReflectiveKey.get(Injector);\n\nfunction _mapProviders(injector, fn) {\n  var res = [];\n\n  for (var i = 0; i < injector._providers.length; ++i) {\n    res[i] = fn(injector.getProviderAtIndex(i));\n  }\n\n  return res;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction ɵɵdirectiveInject(token) {\n  var flags = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : InjectFlags.Default;\n  var lView = getLView(); // Fall back to inject() if view hasn't been created. This situation can happen in tests\n  // if inject utilities are used before bootstrapping.\n\n  if (lView === null) {\n    // Verify that we will not get into infinite loop.\n    ngDevMode && assertInjectImplementationNotEqual(ɵɵdirectiveInject);\n    return ɵɵinject(token, flags);\n  }\n\n  var tNode = getCurrentTNode();\n  return getOrCreateInjectable(tNode, lView, resolveForwardRef(token), flags);\n}\n/**\n * Facade for the attribute injection from DI.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵinjectAttribute(attrNameToInject) {\n  return injectAttributeImpl(getCurrentTNode(), attrNameToInject);\n}\n/**\n * Throws an error indicating that a factory function could not be generated by the compiler for a\n * particular class.\n *\n * This instruction allows the actual error message to be optimized away when ngDevMode is turned\n * off, saving bytes of generated code while still providing a good experience in dev mode.\n *\n * The name of the class is not mentioned here, but will be in the generated factory function name\n * and thus in the stack trace.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵinvalidFactory() {\n  var msg = ngDevMode ? \"This constructor was not compatible with Dependency Injection.\" : 'invalid';\n  throw new Error(msg);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Update a property on a selected element.\n *\n * Operates on the element selected by index via the {@link select} instruction.\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled\n *\n * @param propName Name of property. Because it is going to DOM, this is not subject to\n *        renaming as part of minification.\n * @param value New value to write.\n * @param sanitizer An optional function used to sanitize the value.\n * @returns This function returns itself so that it may be chained\n * (e.g. `property('name', ctx.name)('title', ctx.title)`)\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵproperty(propName, value, sanitizer) {\n  var lView = getLView();\n  var bindingIndex = nextBindingIndex();\n\n  if (bindingUpdated(lView, bindingIndex, value)) {\n    var tView = getTView();\n    var tNode = getSelectedTNode();\n    elementPropertyInternal(tView, tNode, lView, propName, value, lView[RENDERER], sanitizer, false);\n    ngDevMode && storePropertyBindingMetadata(tView.data, tNode, propName, bindingIndex);\n  }\n\n  return ɵɵproperty;\n}\n/**\n * Given `<div style=\"...\" my-dir>` and `MyDir` with `@Input('style')` we need to write to\n * directive input.\n */\n\n\nfunction setDirectiveInputsWhichShadowsStyling(tView, tNode, lView, value, isClassBased) {\n  var inputs = tNode.inputs;\n  var property = isClassBased ? 'class' : 'style'; // We support both 'class' and `className` hence the fallback.\n\n  setInputsForProperty(tView, lView, inputs[property], property, value);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction elementStartFirstCreatePass(index, tView, lView, native, name, attrsIndex, localRefsIndex) {\n  ngDevMode && assertFirstCreatePass(tView);\n  ngDevMode && ngDevMode.firstCreatePass++;\n  var tViewConsts = tView.consts;\n  var attrs = getConstant(tViewConsts, attrsIndex);\n  var tNode = getOrCreateTNode(tView, index, 2\n  /* Element */\n  , name, attrs);\n  var hasDirectives = resolveDirectives(tView, lView, tNode, getConstant(tViewConsts, localRefsIndex));\n  ngDevMode && logUnknownElementError(tView, native, tNode, hasDirectives);\n\n  if (tNode.attrs !== null) {\n    computeStaticStyling(tNode, tNode.attrs, false);\n  }\n\n  if (tNode.mergedAttrs !== null) {\n    computeStaticStyling(tNode, tNode.mergedAttrs, true);\n  }\n\n  if (tView.queries !== null) {\n    tView.queries.elementStart(tView, tNode);\n  }\n\n  return tNode;\n}\n/**\n * Create DOM element. The instruction must later be followed by `elementEnd()` call.\n *\n * @param index Index of the element in the LView array\n * @param name Name of the DOM Node\n * @param attrsIndex Index of the element's attributes in the `consts` array.\n * @param localRefsIndex Index of the element's local references in the `consts` array.\n *\n * Attributes and localRefs are passed as an array of strings where elements with an even index\n * hold an attribute name and elements with an odd index hold an attribute value, ex.:\n * ['id', 'warning5', 'class', 'alert']\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵelementStart(index, name, attrsIndex, localRefsIndex) {\n  var lView = getLView();\n  var tView = getTView();\n  var adjustedIndex = HEADER_OFFSET + index;\n  ngDevMode && assertEqual(getBindingIndex(), tView.bindingStartIndex, 'elements should be created before any bindings');\n  ngDevMode && assertIndexInRange(lView, adjustedIndex);\n  var renderer = lView[RENDERER];\n  var native = lView[adjustedIndex] = createElementNode(renderer, name, getNamespace());\n  var tNode = tView.firstCreatePass ? elementStartFirstCreatePass(adjustedIndex, tView, lView, native, name, attrsIndex, localRefsIndex) : tView.data[adjustedIndex];\n  setCurrentTNode(tNode, true);\n  var mergedAttrs = tNode.mergedAttrs;\n\n  if (mergedAttrs !== null) {\n    setUpAttributes(renderer, native, mergedAttrs);\n  }\n\n  var classes = tNode.classes;\n\n  if (classes !== null) {\n    writeDirectClass(renderer, native, classes);\n  }\n\n  var styles = tNode.styles;\n\n  if (styles !== null) {\n    writeDirectStyle(renderer, native, styles);\n  }\n\n  if ((tNode.flags & 64\n  /* isDetached */\n  ) !== 64\n  /* isDetached */\n  ) {\n    // In the i18n case, the translation may have removed this element, so only add it if it is not\n    // detached. See `TNodeType.Placeholder` and `LFrame.inI18n` for more context.\n    appendChild(tView, lView, native, tNode);\n  } // any immediate children of a component or template container must be pre-emptively\n  // monkey-patched with the component view data so that the element can be inspected\n  // later on using any element discovery utility methods (see `element_discovery.ts`)\n\n\n  if (getElementDepthCount() === 0) {\n    attachPatchData(native, lView);\n  }\n\n  increaseElementDepthCount();\n\n  if (isDirectiveHost(tNode)) {\n    createDirectivesInstances(tView, lView, tNode);\n    executeContentQueries(tView, tNode, lView);\n  }\n\n  if (localRefsIndex !== null) {\n    saveResolvedLocalsInData(lView, tNode);\n  }\n}\n/**\n * Mark the end of the element.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵelementEnd() {\n  var currentTNode = getCurrentTNode();\n  ngDevMode && assertDefined(currentTNode, 'No parent node to close.');\n\n  if (isCurrentTNodeParent()) {\n    setCurrentTNodeAsNotParent();\n  } else {\n    ngDevMode && assertHasParent(getCurrentTNode());\n    currentTNode = currentTNode.parent;\n    setCurrentTNode(currentTNode, false);\n  }\n\n  var tNode = currentTNode;\n  ngDevMode && assertTNodeType(tNode, 3\n  /* AnyRNode */\n  );\n  decreaseElementDepthCount();\n  var tView = getTView();\n\n  if (tView.firstCreatePass) {\n    registerPostOrderHooks(tView, currentTNode);\n\n    if (isContentQueryHost(currentTNode)) {\n      tView.queries.elementEnd(currentTNode);\n    }\n  }\n\n  if (tNode.classesWithoutHost != null && hasClassInput(tNode)) {\n    setDirectiveInputsWhichShadowsStyling(tView, tNode, getLView(), tNode.classesWithoutHost, true);\n  }\n\n  if (tNode.stylesWithoutHost != null && hasStyleInput(tNode)) {\n    setDirectiveInputsWhichShadowsStyling(tView, tNode, getLView(), tNode.stylesWithoutHost, false);\n  }\n}\n/**\n * Creates an empty element using {@link elementStart} and {@link elementEnd}\n *\n * @param index Index of the element in the data array\n * @param name Name of the DOM Node\n * @param attrsIndex Index of the element's attributes in the `consts` array.\n * @param localRefsIndex Index of the element's local references in the `consts` array.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵelement(index, name, attrsIndex, localRefsIndex) {\n  ɵɵelementStart(index, name, attrsIndex, localRefsIndex);\n  ɵɵelementEnd();\n}\n\nfunction logUnknownElementError(tView, element, tNode, hasDirectives) {\n  var schemas = tView.schemas; // If `schemas` is set to `null`, that's an indication that this Component was compiled in AOT\n  // mode where this check happens at compile time. In JIT mode, `schemas` is always present and\n  // defined as an array (as an empty array in case `schemas` field is not defined) and we should\n  // execute the check below.\n\n  if (schemas === null) return;\n  var tagName = tNode.value; // If the element matches any directive, it's considered as valid.\n\n  if (!hasDirectives && tagName !== null) {\n    // The element is unknown if it's an instance of HTMLUnknownElement or it isn't registered\n    // as a custom element. Note that unknown elements with a dash in their name won't be instances\n    // of HTMLUnknownElement in browsers that support web components.\n    var isUnknown = // Note that we can't check for `typeof HTMLUnknownElement === 'function'`,\n    // because while most browsers return 'function', IE returns 'object'.\n    typeof HTMLUnknownElement !== 'undefined' && HTMLUnknownElement && element instanceof HTMLUnknownElement || typeof customElements !== 'undefined' && tagName.indexOf('-') > -1 && !customElements.get(tagName);\n\n    if (isUnknown && !matchingSchemas(tView, tagName)) {\n      var message = \"'\".concat(tagName, \"' is not a known element:\\n\");\n      message += \"1. If '\".concat(tagName, \"' is an Angular component, then verify that it is part of this module.\\n\");\n\n      if (tagName && tagName.indexOf('-') > -1) {\n        message += \"2. If '\".concat(tagName, \"' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.\");\n      } else {\n        message += \"2. To allow any element add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component.\";\n      }\n\n      console.error(formatRuntimeError(\"304\"\n      /* UNKNOWN_ELEMENT */\n      , message));\n    }\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction elementContainerStartFirstCreatePass(index, tView, lView, attrsIndex, localRefsIndex) {\n  ngDevMode && ngDevMode.firstCreatePass++;\n  var tViewConsts = tView.consts;\n  var attrs = getConstant(tViewConsts, attrsIndex);\n  var tNode = getOrCreateTNode(tView, index, 8\n  /* ElementContainer */\n  , 'ng-container', attrs); // While ng-container doesn't necessarily support styling, we use the style context to identify\n  // and execute directives on the ng-container.\n\n  if (attrs !== null) {\n    computeStaticStyling(tNode, attrs, true);\n  }\n\n  var localRefs = getConstant(tViewConsts, localRefsIndex);\n  resolveDirectives(tView, lView, tNode, localRefs);\n\n  if (tView.queries !== null) {\n    tView.queries.elementStart(tView, tNode);\n  }\n\n  return tNode;\n}\n/**\n * Creates a logical container for other nodes (<ng-container>) backed by a comment node in the DOM.\n * The instruction must later be followed by `elementContainerEnd()` call.\n *\n * @param index Index of the element in the LView array\n * @param attrsIndex Index of the container attributes in the `consts` array.\n * @param localRefsIndex Index of the container's local references in the `consts` array.\n *\n * Even if this instruction accepts a set of attributes no actual attribute values are propagated to\n * the DOM (as a comment node can't have attributes). Attributes are here only for directive\n * matching purposes and setting initial inputs of directives.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵelementContainerStart(index, attrsIndex, localRefsIndex) {\n  var lView = getLView();\n  var tView = getTView();\n  var adjustedIndex = index + HEADER_OFFSET;\n  ngDevMode && assertIndexInRange(lView, adjustedIndex);\n  ngDevMode && assertEqual(getBindingIndex(), tView.bindingStartIndex, 'element containers should be created before any bindings');\n  var tNode = tView.firstCreatePass ? elementContainerStartFirstCreatePass(adjustedIndex, tView, lView, attrsIndex, localRefsIndex) : tView.data[adjustedIndex];\n  setCurrentTNode(tNode, true);\n  ngDevMode && ngDevMode.rendererCreateComment++;\n  var native = lView[adjustedIndex] = lView[RENDERER].createComment(ngDevMode ? 'ng-container' : '');\n  appendChild(tView, lView, native, tNode);\n  attachPatchData(native, lView);\n\n  if (isDirectiveHost(tNode)) {\n    createDirectivesInstances(tView, lView, tNode);\n    executeContentQueries(tView, tNode, lView);\n  }\n\n  if (localRefsIndex != null) {\n    saveResolvedLocalsInData(lView, tNode);\n  }\n}\n/**\n * Mark the end of the <ng-container>.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵelementContainerEnd() {\n  var currentTNode = getCurrentTNode();\n  var tView = getTView();\n\n  if (isCurrentTNodeParent()) {\n    setCurrentTNodeAsNotParent();\n  } else {\n    ngDevMode && assertHasParent(currentTNode);\n    currentTNode = currentTNode.parent;\n    setCurrentTNode(currentTNode, false);\n  }\n\n  ngDevMode && assertTNodeType(currentTNode, 8\n  /* ElementContainer */\n  );\n\n  if (tView.firstCreatePass) {\n    registerPostOrderHooks(tView, currentTNode);\n\n    if (isContentQueryHost(currentTNode)) {\n      tView.queries.elementEnd(currentTNode);\n    }\n  }\n}\n/**\n * Creates an empty logical container using {@link elementContainerStart}\n * and {@link elementContainerEnd}\n *\n * @param index Index of the element in the LView array\n * @param attrsIndex Index of the container attributes in the `consts` array.\n * @param localRefsIndex Index of the container's local references in the `consts` array.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵelementContainer(index, attrsIndex, localRefsIndex) {\n  ɵɵelementContainerStart(index, attrsIndex, localRefsIndex);\n  ɵɵelementContainerEnd();\n}\n/**\n * Returns the current OpaqueViewState instance.\n *\n * Used in conjunction with the restoreView() instruction to save a snapshot\n * of the current view and restore it when listeners are invoked. This allows\n * walking the declaration view tree in listeners to get vars from parent views.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵgetCurrentView() {\n  return getLView();\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Determine if the argument is shaped like a Promise\n */\n\n\nfunction isPromise(obj) {\n  // allow any Promise/A+ compliant thenable.\n  // It's up to the caller to ensure that obj.then conforms to the spec\n  return !!obj && typeof obj.then === 'function';\n}\n/**\n * Determine if the argument is an Observable\n *\n * Strictly this tests that the `obj` is `Subscribable`, since `Observable`\n * types need additional methods, such as `lift()`. But it is adequate for our\n * needs since within the Angular framework code we only ever need to use the\n * `subscribe()` method, and RxJS has mechanisms to wrap `Subscribable` objects\n * into `Observable` as needed.\n */\n\n\nfunction isObservable(obj) {\n  return !!obj && typeof obj.subscribe === 'function';\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Adds an event listener to the current node.\n *\n * If an output exists on one of the node's directives, it also subscribes to the output\n * and saves the subscription for later cleanup.\n *\n * @param eventName Name of the event\n * @param listenerFn The function to be called when event emits\n * @param useCapture Whether or not to use capture in event listener\n * @param eventTargetResolver Function that returns global target information in case this listener\n * should be attached to a global object like window, document or body\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵlistener(eventName, listenerFn) {\n  var useCapture = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n  var eventTargetResolver = arguments.length > 3 ? arguments[3] : undefined;\n  var lView = getLView();\n  var tView = getTView();\n  var tNode = getCurrentTNode();\n  listenerInternal(tView, lView, lView[RENDERER], tNode, eventName, listenerFn, useCapture, eventTargetResolver);\n  return ɵɵlistener;\n}\n/**\n * Registers a synthetic host listener (e.g. `(@foo.start)`) on a component or directive.\n *\n * This instruction is for compatibility purposes and is designed to ensure that a\n * synthetic host listener (e.g. `@HostListener('@foo.start')`) properly gets rendered\n * in the component's renderer. Normally all host listeners are evaluated with the\n * parent component's renderer, but, in the case of animation @triggers, they need\n * to be evaluated with the sub component's renderer (because that's where the\n * animation triggers are defined).\n *\n * Do not use this instruction as a replacement for `listener`. This instruction\n * only exists to ensure compatibility with the ViewEngine's host binding behavior.\n *\n * @param eventName Name of the event\n * @param listenerFn The function to be called when event emits\n * @param useCapture Whether or not to use capture in event listener\n * @param eventTargetResolver Function that returns global target information in case this listener\n * should be attached to a global object like window, document or body\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵsyntheticHostListener(eventName, listenerFn) {\n  var useCapture = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n  var eventTargetResolver = arguments.length > 3 ? arguments[3] : undefined;\n  var tNode = getCurrentTNode();\n  var lView = getLView();\n  var tView = getTView();\n  var currentDef = getCurrentDirectiveDef(tView.data);\n  var renderer = loadComponentRenderer(currentDef, tNode, lView);\n  listenerInternal(tView, lView, renderer, tNode, eventName, listenerFn, useCapture, eventTargetResolver);\n  return ɵɵsyntheticHostListener;\n}\n/**\n * A utility function that checks if a given element has already an event handler registered for an\n * event with a specified name. The TView.cleanup data structure is used to find out which events\n * are registered for a given element.\n */\n\n\nfunction findExistingListener(tView, lView, eventName, tNodeIdx) {\n  var tCleanup = tView.cleanup;\n\n  if (tCleanup != null) {\n    for (var i = 0; i < tCleanup.length - 1; i += 2) {\n      var cleanupEventName = tCleanup[i];\n\n      if (cleanupEventName === eventName && tCleanup[i + 1] === tNodeIdx) {\n        // We have found a matching event name on the same node but it might not have been\n        // registered yet, so we must explicitly verify entries in the LView cleanup data\n        // structures.\n        var lCleanup = lView[CLEANUP];\n        var listenerIdxInLCleanup = tCleanup[i + 2];\n        return lCleanup.length > listenerIdxInLCleanup ? lCleanup[listenerIdxInLCleanup] : null;\n      } // TView.cleanup can have a mix of 4-elements entries (for event handler cleanups) or\n      // 2-element entries (for directive and queries destroy hooks). As such we can encounter\n      // blocks of 4 or 2 items in the tView.cleanup and this is why we iterate over 2 elements\n      // first and jump another 2 elements if we detect listeners cleanup (4 elements). Also check\n      // documentation of TView.cleanup for more details of this data structure layout.\n\n\n      if (typeof cleanupEventName === 'string') {\n        i += 2;\n      }\n    }\n  }\n\n  return null;\n}\n\nfunction listenerInternal(tView, lView, renderer, tNode, eventName, listenerFn) {\n  var useCapture = arguments.length > 6 && arguments[6] !== undefined ? arguments[6] : false;\n  var eventTargetResolver = arguments.length > 7 ? arguments[7] : undefined;\n  var isTNodeDirectiveHost = isDirectiveHost(tNode);\n  var firstCreatePass = tView.firstCreatePass;\n  var tCleanup = firstCreatePass && (tView.cleanup || (tView.cleanup = [])); // When the ɵɵlistener instruction was generated and is executed we know that there is either a\n  // native listener or a directive output on this element. As such we we know that we will have to\n  // register a listener and store its cleanup function on LView.\n\n  var lCleanup = getLCleanup(lView);\n  ngDevMode && assertTNodeType(tNode, 3\n  /* AnyRNode */\n  | 12\n  /* AnyContainer */\n  );\n  var processOutputs = true; // add native event listener - applicable to elements only\n\n  if (tNode.type & 3\n  /* AnyRNode */\n  ) {\n    var native = getNativeByTNode(tNode, lView);\n    var resolved = eventTargetResolver ? eventTargetResolver(native) : EMPTY_OBJ;\n    var target = resolved.target || native;\n    var lCleanupIndex = lCleanup.length;\n    var idxOrTargetGetter = eventTargetResolver ? function (_lView) {\n      return eventTargetResolver(unwrapRNode(_lView[tNode.index])).target;\n    } : tNode.index; // In order to match current behavior, native DOM event listeners must be added for all\n    // events (including outputs).\n\n    if (isProceduralRenderer(renderer)) {\n      // There might be cases where multiple directives on the same element try to register an event\n      // handler function for the same event. In this situation we want to avoid registration of\n      // several native listeners as each registration would be intercepted by NgZone and\n      // trigger change detection. This would mean that a single user action would result in several\n      // change detections being invoked. To avoid this situation we want to have only one call to\n      // native handler registration (for the same element and same type of event).\n      //\n      // In order to have just one native event handler in presence of multiple handler functions,\n      // we just register a first handler function as a native event listener and then chain\n      // (coalesce) other handler functions on top of the first native handler function.\n      var existingListener = null; // Please note that the coalescing described here doesn't happen for events specifying an\n      // alternative target (ex. (document:click)) - this is to keep backward compatibility with the\n      // view engine.\n      // Also, we don't have to search for existing listeners is there are no directives\n      // matching on a given node as we can't register multiple event handlers for the same event in\n      // a template (this would mean having duplicate attributes).\n\n      if (!eventTargetResolver && isTNodeDirectiveHost) {\n        existingListener = findExistingListener(tView, lView, eventName, tNode.index);\n      }\n\n      if (existingListener !== null) {\n        // Attach a new listener to coalesced listeners list, maintaining the order in which\n        // listeners are registered. For performance reasons, we keep a reference to the last\n        // listener in that list (in `__ngLastListenerFn__` field), so we can avoid going through\n        // the entire set each time we need to add a new listener.\n        var lastListenerFn = existingListener.__ngLastListenerFn__ || existingListener;\n        lastListenerFn.__ngNextListenerFn__ = listenerFn;\n        existingListener.__ngLastListenerFn__ = listenerFn;\n        processOutputs = false;\n      } else {\n        // The first argument of `listen` function in Procedural Renderer is:\n        // - either a target name (as a string) in case of global target (window, document, body)\n        // - or element reference (in all other cases)\n        listenerFn = wrapListener(tNode, lView, listenerFn, false\n        /** preventDefault */\n        );\n        var cleanupFn = renderer.listen(resolved.name || target, eventName, listenerFn);\n        ngDevMode && ngDevMode.rendererAddEventListener++;\n        lCleanup.push(listenerFn, cleanupFn);\n        tCleanup && tCleanup.push(eventName, idxOrTargetGetter, lCleanupIndex, lCleanupIndex + 1);\n      }\n    } else {\n      listenerFn = wrapListener(tNode, lView, listenerFn, true\n      /** preventDefault */\n      );\n      target.addEventListener(eventName, listenerFn, useCapture);\n      ngDevMode && ngDevMode.rendererAddEventListener++;\n      lCleanup.push(listenerFn);\n      tCleanup && tCleanup.push(eventName, idxOrTargetGetter, lCleanupIndex, useCapture);\n    }\n  } // subscribe to directive outputs\n\n\n  var outputs = tNode.outputs;\n  var props;\n\n  if (processOutputs && outputs !== null && (props = outputs[eventName])) {\n    var propsLength = props.length;\n\n    if (propsLength) {\n      for (var i = 0; i < propsLength; i += 2) {\n        var index = props[i];\n        ngDevMode && assertIndexInRange(lView, index);\n        var minifiedName = props[i + 1];\n        var directiveInstance = lView[index];\n        var output = directiveInstance[minifiedName];\n\n        if (ngDevMode && !isObservable(output)) {\n          throw new Error(\"@Output \".concat(minifiedName, \" not initialized in '\").concat(directiveInstance.constructor.name, \"'.\"));\n        }\n\n        var subscription = output.subscribe(listenerFn);\n        var idx = lCleanup.length;\n        lCleanup.push(listenerFn, subscription);\n        tCleanup && tCleanup.push(eventName, tNode.index, idx, -(idx + 1));\n      }\n    }\n  }\n}\n\nfunction executeListenerWithErrorHandling(lView, listenerFn, e) {\n  try {\n    // Only explicitly returning false from a listener should preventDefault\n    return listenerFn(e) !== false;\n  } catch (error) {\n    handleError(lView, error);\n    return false;\n  }\n}\n/**\n * Wraps an event listener with a function that marks ancestors dirty and prevents default behavior,\n * if applicable.\n *\n * @param tNode The TNode associated with this listener\n * @param lView The LView that contains this listener\n * @param listenerFn The listener function to call\n * @param wrapWithPreventDefault Whether or not to prevent default behavior\n * (the procedural renderer does this already, so in those cases, we should skip)\n */\n\n\nfunction wrapListener(tNode, lView, listenerFn, wrapWithPreventDefault) {\n  // Note: we are performing most of the work in the listener function itself\n  // to optimize listener registration.\n  return function wrapListenerIn_markDirtyAndPreventDefault(e) {\n    // Ivy uses `Function` as a special token that allows us to unwrap the function\n    // so that it can be invoked programmatically by `DebugNode.triggerEventHandler`.\n    if (e === Function) {\n      return listenerFn;\n    } // In order to be backwards compatible with View Engine, events on component host nodes\n    // must also mark the component view itself dirty (i.e. the view that it owns).\n\n\n    var startView = tNode.flags & 2\n    /* isComponentHost */\n    ? getComponentLViewByIndex(tNode.index, lView) : lView; // See interfaces/view.ts for more on LViewFlags.ManualOnPush\n\n    if ((lView[FLAGS] & 32\n    /* ManualOnPush */\n    ) === 0) {\n      markViewDirty(startView);\n    }\n\n    var result = executeListenerWithErrorHandling(lView, listenerFn, e); // A just-invoked listener function might have coalesced listeners so we need to check for\n    // their presence and invoke as needed.\n\n    var nextListenerFn = wrapListenerIn_markDirtyAndPreventDefault.__ngNextListenerFn__;\n\n    while (nextListenerFn) {\n      // We should prevent default if any of the listeners explicitly return false\n      result = executeListenerWithErrorHandling(lView, nextListenerFn, e) && result;\n      nextListenerFn = nextListenerFn.__ngNextListenerFn__;\n    }\n\n    if (wrapWithPreventDefault && result === false) {\n      e.preventDefault(); // Necessary for legacy browsers that don't support preventDefault (e.g. IE)\n\n      e.returnValue = false;\n    }\n\n    return result;\n  };\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Retrieves a context at the level specified and saves it as the global, contextViewData.\n * Will get the next level up if level is not specified.\n *\n * This is used to save contexts of parent views so they can be bound in embedded views, or\n * in conjunction with reference() to bind a ref from a parent view.\n *\n * @param level The relative level of the view from which to grab context compared to contextVewData\n * @returns context\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵnextContext() {\n  var level = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 1;\n  return nextContextImpl(level);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Checks a given node against matching projection slots and returns the\n * determined slot index. Returns \"null\" if no slot matched the given node.\n *\n * This function takes into account the parsed ngProjectAs selector from the\n * node's attributes. If present, it will check whether the ngProjectAs selector\n * matches any of the projection slot selectors.\n */\n\n\nfunction matchingProjectionSlotIndex(tNode, projectionSlots) {\n  var wildcardNgContentIndex = null;\n  var ngProjectAsAttrVal = getProjectAsAttrValue(tNode);\n\n  for (var i = 0; i < projectionSlots.length; i++) {\n    var slotValue = projectionSlots[i]; // The last wildcard projection slot should match all nodes which aren't matching\n    // any selector. This is necessary to be backwards compatible with view engine.\n\n    if (slotValue === '*') {\n      wildcardNgContentIndex = i;\n      continue;\n    } // If we ran into an `ngProjectAs` attribute, we should match its parsed selector\n    // to the list of selectors, otherwise we fall back to matching against the node.\n\n\n    if (ngProjectAsAttrVal === null ? isNodeMatchingSelectorList(tNode, slotValue,\n    /* isProjectionMode */\n    true) : isSelectorInSelectorList(ngProjectAsAttrVal, slotValue)) {\n      return i; // first matching selector \"captures\" a given node\n    }\n  }\n\n  return wildcardNgContentIndex;\n}\n/**\n * Instruction to distribute projectable nodes among <ng-content> occurrences in a given template.\n * It takes all the selectors from the entire component's template and decides where\n * each projected node belongs (it re-distributes nodes among \"buckets\" where each \"bucket\" is\n * backed by a selector).\n *\n * This function requires CSS selectors to be provided in 2 forms: parsed (by a compiler) and text,\n * un-parsed form.\n *\n * The parsed form is needed for efficient matching of a node against a given CSS selector.\n * The un-parsed, textual form is needed for support of the ngProjectAs attribute.\n *\n * Having a CSS selector in 2 different formats is not ideal, but alternatives have even more\n * drawbacks:\n * - having only a textual form would require runtime parsing of CSS selectors;\n * - we can't have only a parsed as we can't re-construct textual form from it (as entered by a\n * template author).\n *\n * @param projectionSlots? A collection of projection slots. A projection slot can be based\n *        on a parsed CSS selectors or set to the wildcard selector (\"*\") in order to match\n *        all nodes which do not match any selector. If not specified, a single wildcard\n *        selector projection slot will be defined.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵprojectionDef(projectionSlots) {\n  var componentNode = getLView()[DECLARATION_COMPONENT_VIEW][T_HOST];\n\n  if (!componentNode.projection) {\n    // If no explicit projection slots are defined, fall back to a single\n    // projection slot with the wildcard selector.\n    var numProjectionSlots = projectionSlots ? projectionSlots.length : 1;\n    var projectionHeads = componentNode.projection = newArray(numProjectionSlots, null);\n    var tails = projectionHeads.slice();\n    var componentChild = componentNode.child;\n\n    while (componentChild !== null) {\n      var slotIndex = projectionSlots ? matchingProjectionSlotIndex(componentChild, projectionSlots) : 0;\n\n      if (slotIndex !== null) {\n        if (tails[slotIndex]) {\n          tails[slotIndex].projectionNext = componentChild;\n        } else {\n          projectionHeads[slotIndex] = componentChild;\n        }\n\n        tails[slotIndex] = componentChild;\n      }\n\n      componentChild = componentChild.next;\n    }\n  }\n}\n/**\n * Inserts previously re-distributed projected nodes. This instruction must be preceded by a call\n * to the projectionDef instruction.\n *\n * @param nodeIndex\n * @param selectorIndex:\n *        - 0 when the selector is `*` (or unspecified as this is the default value),\n *        - 1 based index of the selector from the {@link projectionDef}\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵprojection(nodeIndex) {\n  var selectorIndex = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;\n  var attrs = arguments.length > 2 ? arguments[2] : undefined;\n  var lView = getLView();\n  var tView = getTView();\n  var tProjectionNode = getOrCreateTNode(tView, HEADER_OFFSET + nodeIndex, 16\n  /* Projection */\n  , null, attrs || null); // We can't use viewData[HOST_NODE] because projection nodes can be nested in embedded views.\n\n  if (tProjectionNode.projection === null) tProjectionNode.projection = selectorIndex; // `<ng-content>` has no content\n\n  setCurrentTNodeAsNotParent();\n\n  if ((tProjectionNode.flags & 64\n  /* isDetached */\n  ) !== 64\n  /* isDetached */\n  ) {\n    // re-distribution of projectable nodes is stored on a component's view level\n    applyProjection(tView, lView, tProjectionNode);\n  }\n}\n/**\n *\n * Update an interpolated property on an element with a lone bound value\n *\n * Used when the value passed to a property has 1 interpolated value in it, an no additional text\n * surrounds that interpolated value:\n *\n * ```html\n * <div title=\"{{v0}}\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate('title', v0);\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵpropertyInterpolate(propName, v0, sanitizer) {\n  ɵɵpropertyInterpolate1(propName, '', v0, '', sanitizer);\n  return ɵɵpropertyInterpolate;\n}\n/**\n *\n * Update an interpolated property on an element with single bound value surrounded by text.\n *\n * Used when the value passed to a property has 1 interpolated value in it:\n *\n * ```html\n * <div title=\"prefix{{v0}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate1('title', 'prefix', v0, 'suffix');\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵpropertyInterpolate1(propName, prefix, v0, suffix, sanitizer) {\n  var lView = getLView();\n  var interpolatedValue = interpolation1(lView, prefix, v0, suffix);\n\n  if (interpolatedValue !== NO_CHANGE) {\n    var tView = getTView();\n    var tNode = getSelectedTNode();\n    elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n    ngDevMode && storePropertyBindingMetadata(tView.data, tNode, propName, getBindingIndex() - 1, prefix, suffix);\n  }\n\n  return ɵɵpropertyInterpolate1;\n}\n/**\n *\n * Update an interpolated property on an element with 2 bound values surrounded by text.\n *\n * Used when the value passed to a property has 2 interpolated values in it:\n *\n * ```html\n * <div title=\"prefix{{v0}}-{{v1}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate2('title', 'prefix', v0, '-', v1, 'suffix');\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵpropertyInterpolate2(propName, prefix, v0, i0, v1, suffix, sanitizer) {\n  var lView = getLView();\n  var interpolatedValue = interpolation2(lView, prefix, v0, i0, v1, suffix);\n\n  if (interpolatedValue !== NO_CHANGE) {\n    var tView = getTView();\n    var tNode = getSelectedTNode();\n    elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n    ngDevMode && storePropertyBindingMetadata(tView.data, tNode, propName, getBindingIndex() - 2, prefix, i0, suffix);\n  }\n\n  return ɵɵpropertyInterpolate2;\n}\n/**\n *\n * Update an interpolated property on an element with 3 bound values surrounded by text.\n *\n * Used when the value passed to a property has 3 interpolated values in it:\n *\n * ```html\n * <div title=\"prefix{{v0}}-{{v1}}-{{v2}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate3(\n * 'title', 'prefix', v0, '-', v1, '-', v2, 'suffix');\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵpropertyInterpolate3(propName, prefix, v0, i0, v1, i1, v2, suffix, sanitizer) {\n  var lView = getLView();\n  var interpolatedValue = interpolation3(lView, prefix, v0, i0, v1, i1, v2, suffix);\n\n  if (interpolatedValue !== NO_CHANGE) {\n    var tView = getTView();\n    var tNode = getSelectedTNode();\n    elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n    ngDevMode && storePropertyBindingMetadata(tView.data, tNode, propName, getBindingIndex() - 3, prefix, i0, i1, suffix);\n  }\n\n  return ɵɵpropertyInterpolate3;\n}\n/**\n *\n * Update an interpolated property on an element with 4 bound values surrounded by text.\n *\n * Used when the value passed to a property has 4 interpolated values in it:\n *\n * ```html\n * <div title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate4(\n * 'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, 'suffix');\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵpropertyInterpolate4(propName, prefix, v0, i0, v1, i1, v2, i2, v3, suffix, sanitizer) {\n  var lView = getLView();\n  var interpolatedValue = interpolation4(lView, prefix, v0, i0, v1, i1, v2, i2, v3, suffix);\n\n  if (interpolatedValue !== NO_CHANGE) {\n    var tView = getTView();\n    var tNode = getSelectedTNode();\n    elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n    ngDevMode && storePropertyBindingMetadata(tView.data, tNode, propName, getBindingIndex() - 4, prefix, i0, i1, i2, suffix);\n  }\n\n  return ɵɵpropertyInterpolate4;\n}\n/**\n *\n * Update an interpolated property on an element with 5 bound values surrounded by text.\n *\n * Used when the value passed to a property has 5 interpolated values in it:\n *\n * ```html\n * <div title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate5(\n * 'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, 'suffix');\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵpropertyInterpolate5(propName, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix, sanitizer) {\n  var lView = getLView();\n  var interpolatedValue = interpolation5(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix);\n\n  if (interpolatedValue !== NO_CHANGE) {\n    var tView = getTView();\n    var tNode = getSelectedTNode();\n    elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n    ngDevMode && storePropertyBindingMetadata(tView.data, tNode, propName, getBindingIndex() - 5, prefix, i0, i1, i2, i3, suffix);\n  }\n\n  return ɵɵpropertyInterpolate5;\n}\n/**\n *\n * Update an interpolated property on an element with 6 bound values surrounded by text.\n *\n * Used when the value passed to a property has 6 interpolated values in it:\n *\n * ```html\n * <div title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate6(\n *    'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, 'suffix');\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵpropertyInterpolate6(propName, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix, sanitizer) {\n  var lView = getLView();\n  var interpolatedValue = interpolation6(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix);\n\n  if (interpolatedValue !== NO_CHANGE) {\n    var tView = getTView();\n    var tNode = getSelectedTNode();\n    elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n    ngDevMode && storePropertyBindingMetadata(tView.data, tNode, propName, getBindingIndex() - 6, prefix, i0, i1, i2, i3, i4, suffix);\n  }\n\n  return ɵɵpropertyInterpolate6;\n}\n/**\n *\n * Update an interpolated property on an element with 7 bound values surrounded by text.\n *\n * Used when the value passed to a property has 7 interpolated values in it:\n *\n * ```html\n * <div title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate7(\n *    'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, 'suffix');\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵpropertyInterpolate7(propName, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix, sanitizer) {\n  var lView = getLView();\n  var interpolatedValue = interpolation7(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix);\n\n  if (interpolatedValue !== NO_CHANGE) {\n    var tView = getTView();\n    var tNode = getSelectedTNode();\n    elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n    ngDevMode && storePropertyBindingMetadata(tView.data, tNode, propName, getBindingIndex() - 7, prefix, i0, i1, i2, i3, i4, i5, suffix);\n  }\n\n  return ɵɵpropertyInterpolate7;\n}\n/**\n *\n * Update an interpolated property on an element with 8 bound values surrounded by text.\n *\n * Used when the value passed to a property has 8 interpolated values in it:\n *\n * ```html\n * <div title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolate8(\n *  'title', 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, 'suffix');\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param i6 Static value used for concatenation only.\n * @param v7 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵpropertyInterpolate8(propName, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix, sanitizer) {\n  var lView = getLView();\n  var interpolatedValue = interpolation8(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix);\n\n  if (interpolatedValue !== NO_CHANGE) {\n    var tView = getTView();\n    var tNode = getSelectedTNode();\n    elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n    ngDevMode && storePropertyBindingMetadata(tView.data, tNode, propName, getBindingIndex() - 8, prefix, i0, i1, i2, i3, i4, i5, i6, suffix);\n  }\n\n  return ɵɵpropertyInterpolate8;\n}\n/**\n * Update an interpolated property on an element with 9 or more bound values surrounded by text.\n *\n * Used when the number of interpolated values exceeds 8.\n *\n * ```html\n * <div\n *  title=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}-{{v8}}-{{v9}}suffix\"></div>\n * ```\n *\n * Its compiled representation is::\n *\n * ```ts\n * ɵɵpropertyInterpolateV(\n *  'title', ['prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, '-', v9,\n *  'suffix']);\n * ```\n *\n * If the property name also exists as an input property on one of the element's directives,\n * the component property will be set instead of the element property. This check must\n * be conducted at runtime so child components that add new `@Inputs` don't have to be re-compiled.\n *\n * @param propName The name of the property to update.\n * @param values The collection of values and the strings inbetween those values, beginning with a\n * string prefix and ending with a string suffix.\n * (e.g. `['prefix', value0, '-', value1, '-', value2, ..., value99, 'suffix']`)\n * @param sanitizer An optional sanitizer function\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵpropertyInterpolateV(propName, values, sanitizer) {\n  var lView = getLView();\n  var interpolatedValue = interpolationV(lView, values);\n\n  if (interpolatedValue !== NO_CHANGE) {\n    var tView = getTView();\n    var tNode = getSelectedTNode();\n    elementPropertyInternal(tView, tNode, lView, propName, interpolatedValue, lView[RENDERER], sanitizer, false);\n\n    if (ngDevMode) {\n      var interpolationInBetween = [values[0]]; // prefix\n\n      for (var i = 2; i < values.length; i += 2) {\n        interpolationInBetween.push(values[i]);\n      }\n\n      storePropertyBindingMetadata.apply(void 0, [tView.data, tNode, propName, getBindingIndex() - interpolationInBetween.length + 1].concat(interpolationInBetween));\n    }\n  }\n\n  return ɵɵpropertyInterpolateV;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * This file contains reuseable \"empty\" symbols that can be used as default return values\n * in different parts of the rendering code. Because the same symbols are returned, this\n * allows for identity checks against these values to be consistently used by the framework\n * code.\n */\n\n\nvar EMPTY_OBJ$1 = {};\nvar EMPTY_ARRAY$3 = []; // freezing the values prevents any code from accidentally inserting new values in\n\nif ((typeof ngDevMode === 'undefined' || ngDevMode) && initNgDevMode()) {\n  // These property accesses can be ignored because ngDevMode will be set to false\n  // when optimizing code and the whole if statement will be dropped.\n  // tslint:disable-next-line:no-toplevel-property-access\n  Object.freeze(EMPTY_OBJ$1); // tslint:disable-next-line:no-toplevel-property-access\n\n  Object.freeze(EMPTY_ARRAY$3);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * NOTE: The word `styling` is used interchangeably as style or class styling.\n *\n * This file contains code to link styling instructions together so that they can be replayed in\n * priority order. The file exists because Ivy styling instruction execution order does not match\n * that of the priority order. The purpose of this code is to create a linked list so that the\n * instructions can be traversed in priority order when computing the styles.\n *\n * Assume we are dealing with the following code:\n * ```\n * @Component({\n *   template: `\n *     <my-cmp [style]=\" {color: '#001'} \"\n *             [style.color]=\" #002 \"\n *             dir-style-color-1\n *             dir-style-color-2> `\n * })\n * class ExampleComponent {\n *   static ngComp = ... {\n *     ...\n *     // Compiler ensures that `ɵɵstyleProp` is after `ɵɵstyleMap`\n *     ɵɵstyleMap({color: '#001'});\n *     ɵɵstyleProp('color', '#002');\n *     ...\n *   }\n * }\n *\n * @Directive({\n *   selector: `[dir-style-color-1]',\n * })\n * class Style1Directive {\n *   @HostBinding('style') style = {color: '#005'};\n *   @HostBinding('style.color') color = '#006';\n *\n *   static ngDir = ... {\n *     ...\n *     // Compiler ensures that `ɵɵstyleProp` is after `ɵɵstyleMap`\n *     ɵɵstyleMap({color: '#005'});\n *     ɵɵstyleProp('color', '#006');\n *     ...\n *   }\n * }\n *\n * @Directive({\n *   selector: `[dir-style-color-2]',\n * })\n * class Style2Directive {\n *   @HostBinding('style') style = {color: '#007'};\n *   @HostBinding('style.color') color = '#008';\n *\n *   static ngDir = ... {\n *     ...\n *     // Compiler ensures that `ɵɵstyleProp` is after `ɵɵstyleMap`\n *     ɵɵstyleMap({color: '#007'});\n *     ɵɵstyleProp('color', '#008');\n *     ...\n *   }\n * }\n *\n * @Directive({\n *   selector: `my-cmp',\n * })\n * class MyComponent {\n *   @HostBinding('style') style = {color: '#003'};\n *   @HostBinding('style.color') color = '#004';\n *\n *   static ngComp = ... {\n *     ...\n *     // Compiler ensures that `ɵɵstyleProp` is after `ɵɵstyleMap`\n *     ɵɵstyleMap({color: '#003'});\n *     ɵɵstyleProp('color', '#004');\n *     ...\n *   }\n * }\n * ```\n *\n * The Order of instruction execution is:\n *\n * NOTE: the comment binding location is for illustrative purposes only.\n *\n * ```\n * // Template: (ExampleComponent)\n *     ɵɵstyleMap({color: '#001'});   // Binding index: 10\n *     ɵɵstyleProp('color', '#002');  // Binding index: 12\n * // MyComponent\n *     ɵɵstyleMap({color: '#003'});   // Binding index: 20\n *     ɵɵstyleProp('color', '#004');  // Binding index: 22\n * // Style1Directive\n *     ɵɵstyleMap({color: '#005'});   // Binding index: 24\n *     ɵɵstyleProp('color', '#006');  // Binding index: 26\n * // Style2Directive\n *     ɵɵstyleMap({color: '#007'});   // Binding index: 28\n *     ɵɵstyleProp('color', '#008');  // Binding index: 30\n * ```\n *\n * The correct priority order of concatenation is:\n *\n * ```\n * // MyComponent\n *     ɵɵstyleMap({color: '#003'});   // Binding index: 20\n *     ɵɵstyleProp('color', '#004');  // Binding index: 22\n * // Style1Directive\n *     ɵɵstyleMap({color: '#005'});   // Binding index: 24\n *     ɵɵstyleProp('color', '#006');  // Binding index: 26\n * // Style2Directive\n *     ɵɵstyleMap({color: '#007'});   // Binding index: 28\n *     ɵɵstyleProp('color', '#008');  // Binding index: 30\n * // Template: (ExampleComponent)\n *     ɵɵstyleMap({color: '#001'});   // Binding index: 10\n *     ɵɵstyleProp('color', '#002');  // Binding index: 12\n * ```\n *\n * What color should be rendered?\n *\n * Once the items are correctly sorted in the list, the answer is simply the last item in the\n * concatenation list which is `#002`.\n *\n * To do so we keep a linked list of all of the bindings which pertain to this element.\n * Notice that the bindings are inserted in the order of execution, but the `TView.data` allows\n * us to traverse them in the order of priority.\n *\n * |Idx|`TView.data`|`LView`          | Notes\n * |---|------------|-----------------|--------------\n * |...|            |                 |\n * |10 |`null`      |`{color: '#001'}`| `ɵɵstyleMap('color', {color: '#001'})`\n * |11 |`30 | 12`   | ...             |\n * |12 |`color`     |`'#002'`         | `ɵɵstyleProp('color', '#002')`\n * |13 |`10 | 0`    | ...             |\n * |...|            |                 |\n * |20 |`null`      |`{color: '#003'}`| `ɵɵstyleMap('color', {color: '#003'})`\n * |21 |`0 | 22`    | ...             |\n * |22 |`color`     |`'#004'`         | `ɵɵstyleProp('color', '#004')`\n * |23 |`20 | 24`   | ...             |\n * |24 |`null`      |`{color: '#005'}`| `ɵɵstyleMap('color', {color: '#005'})`\n * |25 |`22 | 26`   | ...             |\n * |26 |`color`     |`'#006'`         | `ɵɵstyleProp('color', '#006')`\n * |27 |`24 | 28`   | ...             |\n * |28 |`null`      |`{color: '#007'}`| `ɵɵstyleMap('color', {color: '#007'})`\n * |29 |`26 | 30`   | ...             |\n * |30 |`color`     |`'#008'`         | `ɵɵstyleProp('color', '#008')`\n * |31 |`28 | 10`   | ...             |\n *\n * The above data structure allows us to re-concatenate the styling no matter which data binding\n * changes.\n *\n * NOTE: in addition to keeping track of next/previous index the `TView.data` also stores prev/next\n * duplicate bit. The duplicate bit if true says there either is a binding with the same name or\n * there is a map (which may contain the name). This information is useful in knowing if other\n * styles with higher priority need to be searched for overwrites.\n *\n * NOTE: See `should support example in 'tnode_linked_list.ts' documentation` in\n * `tnode_linked_list_spec.ts` for working example.\n */\n\n\nvar __unused_const_as_closure_does_not_like_standalone_comment_blocks__;\n/**\n * Insert new `tStyleValue` at `TData` and link existing style bindings such that we maintain linked\n * list of styles and compute the duplicate flag.\n *\n * Note: this function is executed during `firstUpdatePass` only to populate the `TView.data`.\n *\n * The function works by keeping track of `tStylingRange` which contains two pointers pointing to\n * the head/tail of the template portion of the styles.\n *  - if `isHost === false` (we are template) then insertion is at tail of `TStylingRange`\n *  - if `isHost === true` (we are host binding) then insertion is at head of `TStylingRange`\n *\n * @param tData The `TData` to insert into.\n * @param tNode `TNode` associated with the styling element.\n * @param tStylingKey See `TStylingKey`.\n * @param index location of where `tStyleValue` should be stored (and linked into list.)\n * @param isHostBinding `true` if the insertion is for a `hostBinding`. (insertion is in front of\n *               template.)\n * @param isClassBinding True if the associated `tStylingKey` as a `class` styling.\n *                       `tNode.classBindings` should be used (or `tNode.styleBindings` otherwise.)\n */\n\n\nfunction insertTStylingBinding(tData, tNode, tStylingKeyWithStatic, index, isHostBinding, isClassBinding) {\n  ngDevMode && assertFirstUpdatePass(getTView());\n  var tBindings = isClassBinding ? tNode.classBindings : tNode.styleBindings;\n  var tmplHead = getTStylingRangePrev(tBindings);\n  var tmplTail = getTStylingRangeNext(tBindings);\n  tData[index] = tStylingKeyWithStatic;\n  var isKeyDuplicateOfStatic = false;\n  var tStylingKey;\n\n  if (Array.isArray(tStylingKeyWithStatic)) {\n    // We are case when the `TStylingKey` contains static fields as well.\n    var staticKeyValueArray = tStylingKeyWithStatic;\n    tStylingKey = staticKeyValueArray[1]; // unwrap.\n    // We need to check if our key is present in the static so that we can mark it as duplicate.\n\n    if (tStylingKey === null || keyValueArrayIndexOf(staticKeyValueArray, tStylingKey) > 0) {\n      // tStylingKey is present in the statics, need to mark it as duplicate.\n      isKeyDuplicateOfStatic = true;\n    }\n  } else {\n    tStylingKey = tStylingKeyWithStatic;\n  }\n\n  if (isHostBinding) {\n    // We are inserting host bindings\n    // If we don't have template bindings then `tail` is 0.\n    var hasTemplateBindings = tmplTail !== 0; // This is important to know because that means that the `head` can't point to the first\n    // template bindings (there are none.) Instead the head points to the tail of the template.\n\n    if (hasTemplateBindings) {\n      // template head's \"prev\" will point to last host binding or to 0 if no host bindings yet\n      var previousNode = getTStylingRangePrev(tData[tmplHead + 1]);\n      tData[index + 1] = toTStylingRange(previousNode, tmplHead); // if a host binding has already been registered, we need to update the next of that host\n      // binding to point to this one\n\n      if (previousNode !== 0) {\n        // We need to update the template-tail value to point to us.\n        tData[previousNode + 1] = setTStylingRangeNext(tData[previousNode + 1], index);\n      } // The \"previous\" of the template binding head should point to this host binding\n\n\n      tData[tmplHead + 1] = setTStylingRangePrev(tData[tmplHead + 1], index);\n    } else {\n      tData[index + 1] = toTStylingRange(tmplHead, 0); // if a host binding has already been registered, we need to update the next of that host\n      // binding to point to this one\n\n      if (tmplHead !== 0) {\n        // We need to update the template-tail value to point to us.\n        tData[tmplHead + 1] = setTStylingRangeNext(tData[tmplHead + 1], index);\n      } // if we don't have template, the head points to template-tail, and needs to be advanced.\n\n\n      tmplHead = index;\n    }\n  } else {\n    // We are inserting in template section.\n    // We need to set this binding's \"previous\" to the current template tail\n    tData[index + 1] = toTStylingRange(tmplTail, 0);\n    ngDevMode && assertEqual(tmplHead !== 0 && tmplTail === 0, false, 'Adding template bindings after hostBindings is not allowed.');\n\n    if (tmplHead === 0) {\n      tmplHead = index;\n    } else {\n      // We need to update the previous value \"next\" to point to this binding\n      tData[tmplTail + 1] = setTStylingRangeNext(tData[tmplTail + 1], index);\n    }\n\n    tmplTail = index;\n  } // Now we need to update / compute the duplicates.\n  // Starting with our location search towards head (least priority)\n\n\n  if (isKeyDuplicateOfStatic) {\n    tData[index + 1] = setTStylingRangePrevDuplicate(tData[index + 1]);\n  }\n\n  markDuplicates(tData, tStylingKey, index, true, isClassBinding);\n  markDuplicates(tData, tStylingKey, index, false, isClassBinding);\n  markDuplicateOfResidualStyling(tNode, tStylingKey, tData, index, isClassBinding);\n  tBindings = toTStylingRange(tmplHead, tmplTail);\n\n  if (isClassBinding) {\n    tNode.classBindings = tBindings;\n  } else {\n    tNode.styleBindings = tBindings;\n  }\n}\n/**\n * Look into the residual styling to see if the current `tStylingKey` is duplicate of residual.\n *\n * @param tNode `TNode` where the residual is stored.\n * @param tStylingKey `TStylingKey` to store.\n * @param tData `TData` associated with the current `LView`.\n * @param index location of where `tStyleValue` should be stored (and linked into list.)\n * @param isClassBinding True if the associated `tStylingKey` as a `class` styling.\n *                       `tNode.classBindings` should be used (or `tNode.styleBindings` otherwise.)\n */\n\n\nfunction markDuplicateOfResidualStyling(tNode, tStylingKey, tData, index, isClassBinding) {\n  var residual = isClassBinding ? tNode.residualClasses : tNode.residualStyles;\n\n  if (residual != null\n  /* or undefined */\n  && typeof tStylingKey == 'string' && keyValueArrayIndexOf(residual, tStylingKey) >= 0) {\n    // We have duplicate in the residual so mark ourselves as duplicate.\n    tData[index + 1] = setTStylingRangeNextDuplicate(tData[index + 1]);\n  }\n}\n/**\n * Marks `TStyleValue`s as duplicates if another style binding in the list has the same\n * `TStyleValue`.\n *\n * NOTE: this function is intended to be called twice once with `isPrevDir` set to `true` and once\n * with it set to `false` to search both the previous as well as next items in the list.\n *\n * No duplicate case\n * ```\n *   [style.color]\n *   [style.width.px] <<- index\n *   [style.height.px]\n * ```\n *\n * In the above case adding `[style.width.px]` to the existing `[style.color]` produces no\n * duplicates because `width` is not found in any other part of the linked list.\n *\n * Duplicate case\n * ```\n *   [style.color]\n *   [style.width.em]\n *   [style.width.px] <<- index\n * ```\n * In the above case adding `[style.width.px]` will produce a duplicate with `[style.width.em]`\n * because `width` is found in the chain.\n *\n * Map case 1\n * ```\n *   [style.width.px]\n *   [style.color]\n *   [style]  <<- index\n * ```\n * In the above case adding `[style]` will produce a duplicate with any other bindings because\n * `[style]` is a Map and as such is fully dynamic and could produce `color` or `width`.\n *\n * Map case 2\n * ```\n *   [style]\n *   [style.width.px]\n *   [style.color]  <<- index\n * ```\n * In the above case adding `[style.color]` will produce a duplicate because there is already a\n * `[style]` binding which is a Map and as such is fully dynamic and could produce `color` or\n * `width`.\n *\n * NOTE: Once `[style]` (Map) is added into the system all things are mapped as duplicates.\n * NOTE: We use `style` as example, but same logic is applied to `class`es as well.\n *\n * @param tData `TData` where the linked list is stored.\n * @param tStylingKey `TStylingKeyPrimitive` which contains the value to compare to other keys in\n *        the linked list.\n * @param index Starting location in the linked list to search from\n * @param isPrevDir Direction.\n *        - `true` for previous (lower priority);\n *        - `false` for next (higher priority).\n */\n\n\nfunction markDuplicates(tData, tStylingKey, index, isPrevDir, isClassBinding) {\n  var tStylingAtIndex = tData[index + 1];\n  var isMap = tStylingKey === null;\n  var cursor = isPrevDir ? getTStylingRangePrev(tStylingAtIndex) : getTStylingRangeNext(tStylingAtIndex);\n  var foundDuplicate = false; // We keep iterating as long as we have a cursor\n  // AND either:\n  // - we found what we are looking for, OR\n  // - we are a map in which case we have to continue searching even after we find what we were\n  //   looking for since we are a wild card and everything needs to be flipped to duplicate.\n\n  while (cursor !== 0 && (foundDuplicate === false || isMap)) {\n    ngDevMode && assertIndexInRange(tData, cursor);\n    var tStylingValueAtCursor = tData[cursor];\n    var tStyleRangeAtCursor = tData[cursor + 1];\n\n    if (isStylingMatch(tStylingValueAtCursor, tStylingKey)) {\n      foundDuplicate = true;\n      tData[cursor + 1] = isPrevDir ? setTStylingRangeNextDuplicate(tStyleRangeAtCursor) : setTStylingRangePrevDuplicate(tStyleRangeAtCursor);\n    }\n\n    cursor = isPrevDir ? getTStylingRangePrev(tStyleRangeAtCursor) : getTStylingRangeNext(tStyleRangeAtCursor);\n  }\n\n  if (foundDuplicate) {\n    // if we found a duplicate, than mark ourselves.\n    tData[index + 1] = isPrevDir ? setTStylingRangePrevDuplicate(tStylingAtIndex) : setTStylingRangeNextDuplicate(tStylingAtIndex);\n  }\n}\n/**\n * Determines if two `TStylingKey`s are a match.\n *\n * When computing whether a binding contains a duplicate, we need to compare if the instruction\n * `TStylingKey` has a match.\n *\n * Here are examples of `TStylingKey`s which match given `tStylingKeyCursor` is:\n * - `color`\n *    - `color`    // Match another color\n *    - `null`     // That means that `tStylingKey` is a `classMap`/`styleMap` instruction\n *    - `['', 'color', 'other', true]` // wrapped `color` so match\n *    - `['', null, 'other', true]`       // wrapped `null` so match\n *    - `['', 'width', 'color', 'value']` // wrapped static value contains a match on `'color'`\n * - `null`       // `tStylingKeyCursor` always match as it is `classMap`/`styleMap` instruction\n *\n * @param tStylingKeyCursor\n * @param tStylingKey\n */\n\n\nfunction isStylingMatch(tStylingKeyCursor, tStylingKey) {\n  ngDevMode && assertNotEqual(Array.isArray(tStylingKey), true, 'Expected that \\'tStylingKey\\' has been unwrapped');\n\n  if (tStylingKeyCursor === null || // If the cursor is `null` it means that we have map at that\n  // location so we must assume that we have a match.\n  tStylingKey == null || // If `tStylingKey` is `null` then it is a map therefor assume that it\n  // contains a match.\n  (Array.isArray(tStylingKeyCursor) ? tStylingKeyCursor[1] : tStylingKeyCursor) === tStylingKey // If the keys match explicitly than we are a match.\n  ) {\n    return true;\n  } else if (Array.isArray(tStylingKeyCursor) && typeof tStylingKey === 'string') {\n    // if we did not find a match, but `tStylingKeyCursor` is `KeyValueArray` that means cursor has\n    // statics and we need to check those as well.\n    return keyValueArrayIndexOf(tStylingKeyCursor, tStylingKey) >= 0; // see if we are matching the key\n  }\n\n  return false;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// Global state of the parser. (This makes parser non-reentrant, but that is not an issue)\n\n\nvar parserState = {\n  textEnd: 0,\n  key: 0,\n  keyEnd: 0,\n  value: 0,\n  valueEnd: 0\n};\n/**\n * Retrieves the last parsed `key` of style.\n * @param text the text to substring the key from.\n */\n\nfunction getLastParsedKey(text) {\n  return text.substring(parserState.key, parserState.keyEnd);\n}\n/**\n * Retrieves the last parsed `value` of style.\n * @param text the text to substring the key from.\n */\n\n\nfunction getLastParsedValue(text) {\n  return text.substring(parserState.value, parserState.valueEnd);\n}\n/**\n * Initializes `className` string for parsing and parses the first token.\n *\n * This function is intended to be used in this format:\n * ```\n * for (let i = parseClassName(text); i >= 0; i = parseClassNameNext(text, i)) {\n *   const key = getLastParsedKey();\n *   ...\n * }\n * ```\n * @param text `className` to parse\n * @returns index where the next invocation of `parseClassNameNext` should resume.\n */\n\n\nfunction parseClassName(text) {\n  resetParserState(text);\n  return parseClassNameNext(text, consumeWhitespace(text, 0, parserState.textEnd));\n}\n/**\n * Parses next `className` token.\n *\n * This function is intended to be used in this format:\n * ```\n * for (let i = parseClassName(text); i >= 0; i = parseClassNameNext(text, i)) {\n *   const key = getLastParsedKey();\n *   ...\n * }\n * ```\n *\n * @param text `className` to parse\n * @param index where the parsing should resume.\n * @returns index where the next invocation of `parseClassNameNext` should resume.\n */\n\n\nfunction parseClassNameNext(text, index) {\n  var end = parserState.textEnd;\n\n  if (end === index) {\n    return -1;\n  }\n\n  index = parserState.keyEnd = consumeClassToken(text, parserState.key = index, end);\n  return consumeWhitespace(text, index, end);\n}\n/**\n * Initializes `cssText` string for parsing and parses the first key/values.\n *\n * This function is intended to be used in this format:\n * ```\n * for (let i = parseStyle(text); i >= 0; i = parseStyleNext(text, i))) {\n *   const key = getLastParsedKey();\n *   const value = getLastParsedValue();\n *   ...\n * }\n * ```\n * @param text `cssText` to parse\n * @returns index where the next invocation of `parseStyleNext` should resume.\n */\n\n\nfunction parseStyle(text) {\n  resetParserState(text);\n  return parseStyleNext(text, consumeWhitespace(text, 0, parserState.textEnd));\n}\n/**\n * Parses the next `cssText` key/values.\n *\n * This function is intended to be used in this format:\n * ```\n * for (let i = parseStyle(text); i >= 0; i = parseStyleNext(text, i))) {\n *   const key = getLastParsedKey();\n *   const value = getLastParsedValue();\n *   ...\n * }\n *\n * @param text `cssText` to parse\n * @param index where the parsing should resume.\n * @returns index where the next invocation of `parseStyleNext` should resume.\n */\n\n\nfunction parseStyleNext(text, startIndex) {\n  var end = parserState.textEnd;\n  var index = parserState.key = consumeWhitespace(text, startIndex, end);\n\n  if (end === index) {\n    // we reached an end so just quit\n    return -1;\n  }\n\n  index = parserState.keyEnd = consumeStyleKey(text, index, end);\n  index = consumeSeparator(text, index, end, 58\n  /* COLON */\n  );\n  index = parserState.value = consumeWhitespace(text, index, end);\n  index = parserState.valueEnd = consumeStyleValue(text, index, end);\n  return consumeSeparator(text, index, end, 59\n  /* SEMI_COLON */\n  );\n}\n/**\n * Reset the global state of the styling parser.\n * @param text The styling text to parse.\n */\n\n\nfunction resetParserState(text) {\n  parserState.key = 0;\n  parserState.keyEnd = 0;\n  parserState.value = 0;\n  parserState.valueEnd = 0;\n  parserState.textEnd = text.length;\n}\n/**\n * Returns index of next non-whitespace character.\n *\n * @param text Text to scan\n * @param startIndex Starting index of character where the scan should start.\n * @param endIndex Ending index of character where the scan should end.\n * @returns Index of next non-whitespace character (May be the same as `start` if no whitespace at\n *          that location.)\n */\n\n\nfunction consumeWhitespace(text, startIndex, endIndex) {\n  while (startIndex < endIndex && text.charCodeAt(startIndex) <= 32\n  /* SPACE */\n  ) {\n    startIndex++;\n  }\n\n  return startIndex;\n}\n/**\n * Returns index of last char in class token.\n *\n * @param text Text to scan\n * @param startIndex Starting index of character where the scan should start.\n * @param endIndex Ending index of character where the scan should end.\n * @returns Index after last char in class token.\n */\n\n\nfunction consumeClassToken(text, startIndex, endIndex) {\n  while (startIndex < endIndex && text.charCodeAt(startIndex) > 32\n  /* SPACE */\n  ) {\n    startIndex++;\n  }\n\n  return startIndex;\n}\n/**\n * Consumes all of the characters belonging to style key and token.\n *\n * @param text Text to scan\n * @param startIndex Starting index of character where the scan should start.\n * @param endIndex Ending index of character where the scan should end.\n * @returns Index after last style key character.\n */\n\n\nfunction consumeStyleKey(text, startIndex, endIndex) {\n  var ch;\n\n  while (startIndex < endIndex && ((ch = text.charCodeAt(startIndex)) === 45\n  /* DASH */\n  || ch === 95\n  /* UNDERSCORE */\n  || (ch & -33\n  /* UPPER_CASE */\n  ) >= 65\n  /* A */\n  && (ch & -33\n  /* UPPER_CASE */\n  ) <= 90\n  /* Z */\n  || ch >= 48\n  /* ZERO */\n  && ch <= 57\n  /* NINE */\n  )) {\n    startIndex++;\n  }\n\n  return startIndex;\n}\n/**\n * Consumes all whitespace and the separator `:` after the style key.\n *\n * @param text Text to scan\n * @param startIndex Starting index of character where the scan should start.\n * @param endIndex Ending index of character where the scan should end.\n * @returns Index after separator and surrounding whitespace.\n */\n\n\nfunction consumeSeparator(text, startIndex, endIndex, separator) {\n  startIndex = consumeWhitespace(text, startIndex, endIndex);\n\n  if (startIndex < endIndex) {\n    if (ngDevMode && text.charCodeAt(startIndex) !== separator) {\n      malformedStyleError(text, String.fromCharCode(separator), startIndex);\n    }\n\n    startIndex++;\n  }\n\n  return startIndex;\n}\n/**\n * Consumes style value honoring `url()` and `\"\"` text.\n *\n * @param text Text to scan\n * @param startIndex Starting index of character where the scan should start.\n * @param endIndex Ending index of character where the scan should end.\n * @returns Index after last style value character.\n */\n\n\nfunction consumeStyleValue(text, startIndex, endIndex) {\n  var ch1 = -1; // 1st previous character\n\n  var ch2 = -1; // 2nd previous character\n\n  var ch3 = -1; // 3rd previous character\n\n  var i = startIndex;\n  var lastChIndex = i;\n\n  while (i < endIndex) {\n    var ch = text.charCodeAt(i++);\n\n    if (ch === 59\n    /* SEMI_COLON */\n    ) {\n      return lastChIndex;\n    } else if (ch === 34\n    /* DOUBLE_QUOTE */\n    || ch === 39\n    /* SINGLE_QUOTE */\n    ) {\n      lastChIndex = i = consumeQuotedText(text, ch, i, endIndex);\n    } else if (startIndex === i - 4 && // We have seen only 4 characters so far \"URL(\" (Ignore \"foo_URL()\")\n    ch3 === 85\n    /* U */\n    && ch2 === 82\n    /* R */\n    && ch1 === 76\n    /* L */\n    && ch === 40\n    /* OPEN_PAREN */\n    ) {\n      lastChIndex = i = consumeQuotedText(text, 41\n      /* CLOSE_PAREN */\n      , i, endIndex);\n    } else if (ch > 32\n    /* SPACE */\n    ) {\n      // if we have a non-whitespace character then capture its location\n      lastChIndex = i;\n    }\n\n    ch3 = ch2;\n    ch2 = ch1;\n    ch1 = ch & -33\n    /* UPPER_CASE */\n    ;\n  }\n\n  return lastChIndex;\n}\n/**\n * Consumes all of the quoted characters.\n *\n * @param text Text to scan\n * @param quoteCharCode CharCode of either `\"` or `'` quote or `)` for `url(...)`.\n * @param startIndex Starting index of character where the scan should start.\n * @param endIndex Ending index of character where the scan should end.\n * @returns Index after quoted characters.\n */\n\n\nfunction consumeQuotedText(text, quoteCharCode, startIndex, endIndex) {\n  var ch1 = -1; // 1st previous character\n\n  var index = startIndex;\n\n  while (index < endIndex) {\n    var ch = text.charCodeAt(index++);\n\n    if (ch == quoteCharCode && ch1 !== 92\n    /* BACK_SLASH */\n    ) {\n      return index;\n    }\n\n    if (ch == 92\n    /* BACK_SLASH */\n    && ch1 === 92\n    /* BACK_SLASH */\n    ) {\n      // two back slashes cancel each other out. For example `\"\\\\\"` should properly end the\n      // quotation. (It should not assume that the last `\"` is escaped.)\n      ch1 = 0;\n    } else {\n      ch1 = ch;\n    }\n  }\n\n  throw ngDevMode ? malformedStyleError(text, String.fromCharCode(quoteCharCode), endIndex) : new Error();\n}\n\nfunction malformedStyleError(text, expecting, index) {\n  ngDevMode && assertEqual(typeof text === 'string', true, 'String expected here');\n  throw throwError(\"Malformed style at location \".concat(index, \" in string '\") + text.substring(0, index) + '[>>' + text.substring(index, index + 1) + '<<]' + text.substr(index + 1) + \"'. Expecting '\".concat(expecting, \"'.\"));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Update a style binding on an element with the provided value.\n *\n * If the style value is falsy then it will be removed from the element\n * (or assigned a different value depending if there are any styles placed\n * on the element with `styleMap` or any static styles that are\n * present from when the element was created with `styling`).\n *\n * Note that the styling element is updated as part of `stylingApply`.\n *\n * @param prop A valid CSS property.\n * @param value New value to write (`null` or an empty string to remove).\n * @param suffix Optional suffix. Used with scalar values to add unit such as `px`.\n *\n * Note that this will apply the provided style value to the host element if this function is called\n * within a host binding function.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵstyleProp(prop, value, suffix) {\n  checkStylingProperty(prop, value, suffix, false);\n  return ɵɵstyleProp;\n}\n/**\n * Update a class binding on an element with the provided value.\n *\n * This instruction is meant to handle the `[class.foo]=\"exp\"` case and,\n * therefore, the class binding itself must already be allocated using\n * `styling` within the creation block.\n *\n * @param prop A valid CSS class (only one).\n * @param value A true/false value which will turn the class on or off.\n *\n * Note that this will apply the provided class value to the host element if this function\n * is called within a host binding function.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵclassProp(className, value) {\n  checkStylingProperty(className, value, null, true);\n  return ɵɵclassProp;\n}\n/**\n * Update style bindings using an object literal on an element.\n *\n * This instruction is meant to apply styling via the `[style]=\"exp\"` template bindings.\n * When styles are applied to the element they will then be updated with respect to\n * any styles/classes set via `styleProp`. If any styles are set to falsy\n * then they will be removed from the element.\n *\n * Note that the styling instruction will not be applied until `stylingApply` is called.\n *\n * @param styles A key/value style map of the styles that will be applied to the given element.\n *        Any missing styles (that have already been applied to the element beforehand) will be\n *        removed (unset) from the element's styling.\n *\n * Note that this will apply the provided styleMap value to the host element if this function\n * is called within a host binding.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵstyleMap(styles) {\n  checkStylingMap(styleKeyValueArraySet, styleStringParser, styles, false);\n}\n/**\n * Parse text as style and add values to KeyValueArray.\n *\n * This code is pulled out to a separate function so that it can be tree shaken away if it is not\n * needed. It is only referenced from `ɵɵstyleMap`.\n *\n * @param keyValueArray KeyValueArray to add parsed values to.\n * @param text text to parse.\n */\n\n\nfunction styleStringParser(keyValueArray, text) {\n  for (var i = parseStyle(text); i >= 0; i = parseStyleNext(text, i)) {\n    styleKeyValueArraySet(keyValueArray, getLastParsedKey(text), getLastParsedValue(text));\n  }\n}\n/**\n * Update class bindings using an object literal or class-string on an element.\n *\n * This instruction is meant to apply styling via the `[class]=\"exp\"` template bindings.\n * When classes are applied to the element they will then be updated with\n * respect to any styles/classes set via `classProp`. If any\n * classes are set to falsy then they will be removed from the element.\n *\n * Note that the styling instruction will not be applied until `stylingApply` is called.\n * Note that this will the provided classMap value to the host element if this function is called\n * within a host binding.\n *\n * @param classes A key/value map or string of CSS classes that will be added to the\n *        given element. Any missing classes (that have already been applied to the element\n *        beforehand) will be removed (unset) from the element's list of CSS classes.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵclassMap(classes) {\n  checkStylingMap(keyValueArraySet, classStringParser, classes, true);\n}\n/**\n * Parse text as class and add values to KeyValueArray.\n *\n * This code is pulled out to a separate function so that it can be tree shaken away if it is not\n * needed. It is only referenced from `ɵɵclassMap`.\n *\n * @param keyValueArray KeyValueArray to add parsed values to.\n * @param text text to parse.\n */\n\n\nfunction classStringParser(keyValueArray, text) {\n  for (var i = parseClassName(text); i >= 0; i = parseClassNameNext(text, i)) {\n    keyValueArraySet(keyValueArray, getLastParsedKey(text), true);\n  }\n}\n/**\n * Common code between `ɵɵclassProp` and `ɵɵstyleProp`.\n *\n * @param prop property name.\n * @param value binding value.\n * @param suffix suffix for the property (e.g. `em` or `px`)\n * @param isClassBased `true` if `class` change (`false` if `style`)\n */\n\n\nfunction checkStylingProperty(prop, value, suffix, isClassBased) {\n  var lView = getLView();\n  var tView = getTView(); // Styling instructions use 2 slots per binding.\n  // 1. one for the value / TStylingKey\n  // 2. one for the intermittent-value / TStylingRange\n\n  var bindingIndex = incrementBindingIndex(2);\n\n  if (tView.firstUpdatePass) {\n    stylingFirstUpdatePass(tView, prop, bindingIndex, isClassBased);\n  }\n\n  if (value !== NO_CHANGE && bindingUpdated(lView, bindingIndex, value)) {\n    var tNode = tView.data[getSelectedIndex()];\n    updateStyling(tView, tNode, lView, lView[RENDERER], prop, lView[bindingIndex + 1] = normalizeSuffix(value, suffix), isClassBased, bindingIndex);\n  }\n}\n/**\n * Common code between `ɵɵclassMap` and `ɵɵstyleMap`.\n *\n * @param keyValueArraySet (See `keyValueArraySet` in \"util/array_utils\") Gets passed in as a\n *        function so that `style` can be processed. This is done for tree shaking purposes.\n * @param stringParser Parser used to parse `value` if `string`. (Passed in as `style` and `class`\n *        have different parsers.)\n * @param value bound value from application\n * @param isClassBased `true` if `class` change (`false` if `style`)\n */\n\n\nfunction checkStylingMap(keyValueArraySet, stringParser, value, isClassBased) {\n  var tView = getTView();\n  var bindingIndex = incrementBindingIndex(2);\n\n  if (tView.firstUpdatePass) {\n    stylingFirstUpdatePass(tView, null, bindingIndex, isClassBased);\n  }\n\n  var lView = getLView();\n\n  if (value !== NO_CHANGE && bindingUpdated(lView, bindingIndex, value)) {\n    // `getSelectedIndex()` should be here (rather than in instruction) so that it is guarded by the\n    // if so as not to read unnecessarily.\n    var tNode = tView.data[getSelectedIndex()];\n\n    if (hasStylingInputShadow(tNode, isClassBased) && !isInHostBindings(tView, bindingIndex)) {\n      if (ngDevMode) {\n        // verify that if we are shadowing then `TData` is appropriately marked so that we skip\n        // processing this binding in styling resolution.\n        var tStylingKey = tView.data[bindingIndex];\n        assertEqual(Array.isArray(tStylingKey) ? tStylingKey[1] : tStylingKey, false, 'Styling linked list shadow input should be marked as \\'false\\'');\n      } // VE does not concatenate the static portion like we are doing here.\n      // Instead VE just ignores the static completely if dynamic binding is present.\n      // Because of locality we have already set the static portion because we don't know if there\n      // is a dynamic portion until later. If we would ignore the static portion it would look like\n      // the binding has removed it. This would confuse `[ngStyle]`/`[ngClass]` to do the wrong\n      // thing as it would think that the static portion was removed. For this reason we\n      // concatenate it so that `[ngStyle]`/`[ngClass]`  can continue to work on changed.\n\n\n      var staticPrefix = isClassBased ? tNode.classesWithoutHost : tNode.stylesWithoutHost;\n      ngDevMode && isClassBased === false && staticPrefix !== null && assertEqual(staticPrefix.endsWith(';'), true, 'Expecting static portion to end with \\';\\'');\n\n      if (staticPrefix !== null) {\n        // We want to make sure that falsy values of `value` become empty strings.\n        value = concatStringsWithSpace(staticPrefix, value ? value : '');\n      } // Given `<div [style] my-dir>` such that `my-dir` has `@Input('style')`.\n      // This takes over the `[style]` binding. (Same for `[class]`)\n\n\n      setDirectiveInputsWhichShadowsStyling(tView, tNode, lView, value, isClassBased);\n    } else {\n      updateStylingMap(tView, tNode, lView, lView[RENDERER], lView[bindingIndex + 1], lView[bindingIndex + 1] = toStylingKeyValueArray(keyValueArraySet, stringParser, value), isClassBased, bindingIndex);\n    }\n  }\n}\n/**\n * Determines when the binding is in `hostBindings` section\n *\n * @param tView Current `TView`\n * @param bindingIndex index of binding which we would like if it is in `hostBindings`\n */\n\n\nfunction isInHostBindings(tView, bindingIndex) {\n  // All host bindings are placed after the expando section.\n  return bindingIndex >= tView.expandoStartIndex;\n}\n/**\n * Collects the necessary information to insert the binding into a linked list of style bindings\n * using `insertTStylingBinding`.\n *\n * @param tView `TView` where the binding linked list will be stored.\n * @param tStylingKey Property/key of the binding.\n * @param bindingIndex Index of binding associated with the `prop`\n * @param isClassBased `true` if `class` change (`false` if `style`)\n */\n\n\nfunction stylingFirstUpdatePass(tView, tStylingKey, bindingIndex, isClassBased) {\n  ngDevMode && assertFirstUpdatePass(tView);\n  var tData = tView.data;\n\n  if (tData[bindingIndex + 1] === null) {\n    // The above check is necessary because we don't clear first update pass until first successful\n    // (no exception) template execution. This prevents the styling instruction from double adding\n    // itself to the list.\n    // `getSelectedIndex()` should be here (rather than in instruction) so that it is guarded by the\n    // if so as not to read unnecessarily.\n    var tNode = tData[getSelectedIndex()];\n    ngDevMode && assertDefined(tNode, 'TNode expected');\n    var isHostBindings = isInHostBindings(tView, bindingIndex);\n\n    if (hasStylingInputShadow(tNode, isClassBased) && tStylingKey === null && !isHostBindings) {\n      // `tStylingKey === null` implies that we are either `[style]` or `[class]` binding.\n      // If there is a directive which uses `@Input('style')` or `@Input('class')` than\n      // we need to neutralize this binding since that directive is shadowing it.\n      // We turn this into a noop by setting the key to `false`\n      tStylingKey = false;\n    }\n\n    tStylingKey = wrapInStaticStylingKey(tData, tNode, tStylingKey, isClassBased);\n    insertTStylingBinding(tData, tNode, tStylingKey, bindingIndex, isHostBindings, isClassBased);\n  }\n}\n/**\n * Adds static styling information to the binding if applicable.\n *\n * The linked list of styles not only stores the list and keys, but also stores static styling\n * information on some of the keys. This function determines if the key should contain the styling\n * information and computes it.\n *\n * See `TStylingStatic` for more details.\n *\n * @param tData `TData` where the linked list is stored.\n * @param tNode `TNode` for which the styling is being computed.\n * @param stylingKey `TStylingKeyPrimitive` which may need to be wrapped into `TStylingKey`\n * @param isClassBased `true` if `class` (`false` if `style`)\n */\n\n\nfunction wrapInStaticStylingKey(tData, tNode, stylingKey, isClassBased) {\n  var hostDirectiveDef = getCurrentDirectiveDef(tData);\n  var residual = isClassBased ? tNode.residualClasses : tNode.residualStyles;\n\n  if (hostDirectiveDef === null) {\n    // We are in template node.\n    // If template node already had styling instruction then it has already collected the static\n    // styling and there is no need to collect them again. We know that we are the first styling\n    // instruction because the `TNode.*Bindings` points to 0 (nothing has been inserted yet).\n    var isFirstStylingInstructionInTemplate = (isClassBased ? tNode.classBindings : tNode.styleBindings) === 0;\n\n    if (isFirstStylingInstructionInTemplate) {\n      // It would be nice to be able to get the statics from `mergeAttrs`, however, at this point\n      // they are already merged and it would not be possible to figure which property belongs where\n      // in the priority.\n      stylingKey = collectStylingFromDirectives(null, tData, tNode, stylingKey, isClassBased);\n      stylingKey = collectStylingFromTAttrs(stylingKey, tNode.attrs, isClassBased); // We know that if we have styling binding in template we can't have residual.\n\n      residual = null;\n    }\n  } else {\n    // We are in host binding node and there was no binding instruction in template node.\n    // This means that we need to compute the residual.\n    var directiveStylingLast = tNode.directiveStylingLast;\n    var isFirstStylingInstructionInHostBinding = directiveStylingLast === -1 || tData[directiveStylingLast] !== hostDirectiveDef;\n\n    if (isFirstStylingInstructionInHostBinding) {\n      stylingKey = collectStylingFromDirectives(hostDirectiveDef, tData, tNode, stylingKey, isClassBased);\n\n      if (residual === null) {\n        // - If `null` than either:\n        //    - Template styling instruction already ran and it has consumed the static\n        //      styling into its `TStylingKey` and so there is no need to update residual. Instead\n        //      we need to update the `TStylingKey` associated with the first template node\n        //      instruction. OR\n        //    - Some other styling instruction ran and determined that there are no residuals\n        var templateStylingKey = getTemplateHeadTStylingKey(tData, tNode, isClassBased);\n\n        if (templateStylingKey !== undefined && Array.isArray(templateStylingKey)) {\n          // Only recompute if `templateStylingKey` had static values. (If no static value found\n          // then there is nothing to do since this operation can only produce less static keys, not\n          // more.)\n          templateStylingKey = collectStylingFromDirectives(null, tData, tNode, templateStylingKey[1]\n          /* unwrap previous statics */\n          , isClassBased);\n          templateStylingKey = collectStylingFromTAttrs(templateStylingKey, tNode.attrs, isClassBased);\n          setTemplateHeadTStylingKey(tData, tNode, isClassBased, templateStylingKey);\n        }\n      } else {\n        // We only need to recompute residual if it is not `null`.\n        // - If existing residual (implies there was no template styling). This means that some of\n        //   the statics may have moved from the residual to the `stylingKey` and so we have to\n        //   recompute.\n        // - If `undefined` this is the first time we are running.\n        residual = collectResidual(tData, tNode, isClassBased);\n      }\n    }\n  }\n\n  if (residual !== undefined) {\n    isClassBased ? tNode.residualClasses = residual : tNode.residualStyles = residual;\n  }\n\n  return stylingKey;\n}\n/**\n * Retrieve the `TStylingKey` for the template styling instruction.\n *\n * This is needed since `hostBinding` styling instructions are inserted after the template\n * instruction. While the template instruction needs to update the residual in `TNode` the\n * `hostBinding` instructions need to update the `TStylingKey` of the template instruction because\n * the template instruction is downstream from the `hostBindings` instructions.\n *\n * @param tData `TData` where the linked list is stored.\n * @param tNode `TNode` for which the styling is being computed.\n * @param isClassBased `true` if `class` (`false` if `style`)\n * @return `TStylingKey` if found or `undefined` if not found.\n */\n\n\nfunction getTemplateHeadTStylingKey(tData, tNode, isClassBased) {\n  var bindings = isClassBased ? tNode.classBindings : tNode.styleBindings;\n\n  if (getTStylingRangeNext(bindings) === 0) {\n    // There does not seem to be a styling instruction in the `template`.\n    return undefined;\n  }\n\n  return tData[getTStylingRangePrev(bindings)];\n}\n/**\n * Update the `TStylingKey` of the first template instruction in `TNode`.\n *\n * Logically `hostBindings` styling instructions are of lower priority than that of the template.\n * However, they execute after the template styling instructions. This means that they get inserted\n * in front of the template styling instructions.\n *\n * If we have a template styling instruction and a new `hostBindings` styling instruction is\n * executed it means that it may need to steal static fields from the template instruction. This\n * method allows us to update the first template instruction `TStylingKey` with a new value.\n *\n * Assume:\n * ```\n * <div my-dir style=\"color: red\" [style.color]=\"tmplExp\"></div>\n *\n * @Directive({\n *   host: {\n *     'style': 'width: 100px',\n *     '[style.color]': 'dirExp',\n *   }\n * })\n * class MyDir {}\n * ```\n *\n * when `[style.color]=\"tmplExp\"` executes it creates this data structure.\n * ```\n *  ['', 'color', 'color', 'red', 'width', '100px'],\n * ```\n *\n * The reason for this is that the template instruction does not know if there are styling\n * instructions and must assume that there are none and must collect all of the static styling.\n * (both\n * `color' and 'width`)\n *\n * When `'[style.color]': 'dirExp',` executes we need to insert a new data into the linked list.\n * ```\n *  ['', 'color', 'width', '100px'],  // newly inserted\n *  ['', 'color', 'color', 'red', 'width', '100px'], // this is wrong\n * ```\n *\n * Notice that the template statics is now wrong as it incorrectly contains `width` so we need to\n * update it like so:\n * ```\n *  ['', 'color', 'width', '100px'],\n *  ['', 'color', 'color', 'red'],    // UPDATE\n * ```\n *\n * @param tData `TData` where the linked list is stored.\n * @param tNode `TNode` for which the styling is being computed.\n * @param isClassBased `true` if `class` (`false` if `style`)\n * @param tStylingKey New `TStylingKey` which is replacing the old one.\n */\n\n\nfunction setTemplateHeadTStylingKey(tData, tNode, isClassBased, tStylingKey) {\n  var bindings = isClassBased ? tNode.classBindings : tNode.styleBindings;\n  ngDevMode && assertNotEqual(getTStylingRangeNext(bindings), 0, 'Expecting to have at least one template styling binding.');\n  tData[getTStylingRangePrev(bindings)] = tStylingKey;\n}\n/**\n * Collect all static values after the current `TNode.directiveStylingLast` index.\n *\n * Collect the remaining styling information which has not yet been collected by an existing\n * styling instruction.\n *\n * @param tData `TData` where the `DirectiveDefs` are stored.\n * @param tNode `TNode` which contains the directive range.\n * @param isClassBased `true` if `class` (`false` if `style`)\n */\n\n\nfunction collectResidual(tData, tNode, isClassBased) {\n  var residual = undefined;\n  var directiveEnd = tNode.directiveEnd;\n  ngDevMode && assertNotEqual(tNode.directiveStylingLast, -1, 'By the time this function gets called at least one hostBindings-node styling instruction must have executed.'); // We add `1 + tNode.directiveStart` because we need to skip the current directive (as we are\n  // collecting things after the last `hostBindings` directive which had a styling instruction.)\n\n  for (var i = 1 + tNode.directiveStylingLast; i < directiveEnd; i++) {\n    var attrs = tData[i].hostAttrs;\n    residual = collectStylingFromTAttrs(residual, attrs, isClassBased);\n  }\n\n  return collectStylingFromTAttrs(residual, tNode.attrs, isClassBased);\n}\n/**\n * Collect the static styling information with lower priority than `hostDirectiveDef`.\n *\n * (This is opposite of residual styling.)\n *\n * @param hostDirectiveDef `DirectiveDef` for which we want to collect lower priority static\n *        styling. (Or `null` if template styling)\n * @param tData `TData` where the linked list is stored.\n * @param tNode `TNode` for which the styling is being computed.\n * @param stylingKey Existing `TStylingKey` to update or wrap.\n * @param isClassBased `true` if `class` (`false` if `style`)\n */\n\n\nfunction collectStylingFromDirectives(hostDirectiveDef, tData, tNode, stylingKey, isClassBased) {\n  // We need to loop because there can be directives which have `hostAttrs` but don't have\n  // `hostBindings` so this loop catches up to the current directive..\n  var currentDirective = null;\n  var directiveEnd = tNode.directiveEnd;\n  var directiveStylingLast = tNode.directiveStylingLast;\n\n  if (directiveStylingLast === -1) {\n    directiveStylingLast = tNode.directiveStart;\n  } else {\n    directiveStylingLast++;\n  }\n\n  while (directiveStylingLast < directiveEnd) {\n    currentDirective = tData[directiveStylingLast];\n    ngDevMode && assertDefined(currentDirective, 'expected to be defined');\n    stylingKey = collectStylingFromTAttrs(stylingKey, currentDirective.hostAttrs, isClassBased);\n    if (currentDirective === hostDirectiveDef) break;\n    directiveStylingLast++;\n  }\n\n  if (hostDirectiveDef !== null) {\n    // we only advance the styling cursor if we are collecting data from host bindings.\n    // Template executes before host bindings and so if we would update the index,\n    // host bindings would not get their statics.\n    tNode.directiveStylingLast = directiveStylingLast;\n  }\n\n  return stylingKey;\n}\n/**\n * Convert `TAttrs` into `TStylingStatic`.\n *\n * @param stylingKey existing `TStylingKey` to update or wrap.\n * @param attrs `TAttributes` to process.\n * @param isClassBased `true` if `class` (`false` if `style`)\n */\n\n\nfunction collectStylingFromTAttrs(stylingKey, attrs, isClassBased) {\n  var desiredMarker = isClassBased ? 1\n  /* Classes */\n  : 2\n  /* Styles */\n  ;\n  var currentMarker = -1\n  /* ImplicitAttributes */\n  ;\n\n  if (attrs !== null) {\n    for (var i = 0; i < attrs.length; i++) {\n      var item = attrs[i];\n\n      if (typeof item === 'number') {\n        currentMarker = item;\n      } else {\n        if (currentMarker === desiredMarker) {\n          if (!Array.isArray(stylingKey)) {\n            stylingKey = stylingKey === undefined ? [] : ['', stylingKey];\n          }\n\n          keyValueArraySet(stylingKey, item, isClassBased ? true : attrs[++i]);\n        }\n      }\n    }\n  }\n\n  return stylingKey === undefined ? null : stylingKey;\n}\n/**\n * Convert user input to `KeyValueArray`.\n *\n * This function takes user input which could be `string`, Object literal, or iterable and converts\n * it into a consistent representation. The output of this is `KeyValueArray` (which is an array\n * where\n * even indexes contain keys and odd indexes contain values for those keys).\n *\n * The advantage of converting to `KeyValueArray` is that we can perform diff in an input\n * independent\n * way.\n * (ie we can compare `foo bar` to `['bar', 'baz'] and determine a set of changes which need to be\n * applied)\n *\n * The fact that `KeyValueArray` is sorted is very important because it allows us to compute the\n * difference in linear fashion without the need to allocate any additional data.\n *\n * For example if we kept this as a `Map` we would have to iterate over previous `Map` to determine\n * which values need to be deleted, over the new `Map` to determine additions, and we would have to\n * keep additional `Map` to keep track of duplicates or items which have not yet been visited.\n *\n * @param keyValueArraySet (See `keyValueArraySet` in \"util/array_utils\") Gets passed in as a\n *        function so that `style` can be processed. This is done\n *        for tree shaking purposes.\n * @param stringParser The parser is passed in so that it will be tree shakable. See\n *        `styleStringParser` and `classStringParser`\n * @param value The value to parse/convert to `KeyValueArray`\n */\n\n\nfunction toStylingKeyValueArray(keyValueArraySet, stringParser, value) {\n  if (value == null\n  /*|| value === undefined */\n  || value === '') return EMPTY_ARRAY$3;\n  var styleKeyValueArray = [];\n  var unwrappedValue = unwrapSafeValue(value);\n\n  if (Array.isArray(unwrappedValue)) {\n    for (var i = 0; i < unwrappedValue.length; i++) {\n      keyValueArraySet(styleKeyValueArray, unwrappedValue[i], true);\n    }\n  } else if (_typeof(unwrappedValue) === 'object') {\n    for (var key in unwrappedValue) {\n      if (unwrappedValue.hasOwnProperty(key)) {\n        keyValueArraySet(styleKeyValueArray, key, unwrappedValue[key]);\n      }\n    }\n  } else if (typeof unwrappedValue === 'string') {\n    stringParser(styleKeyValueArray, unwrappedValue);\n  } else {\n    ngDevMode && throwError('Unsupported styling type ' + _typeof(unwrappedValue) + ': ' + unwrappedValue);\n  }\n\n  return styleKeyValueArray;\n}\n/**\n * Set a `value` for a `key`.\n *\n * See: `keyValueArraySet` for details\n *\n * @param keyValueArray KeyValueArray to add to.\n * @param key Style key to add.\n * @param value The value to set.\n */\n\n\nfunction styleKeyValueArraySet(keyValueArray, key, value) {\n  keyValueArraySet(keyValueArray, key, unwrapSafeValue(value));\n}\n/**\n * Update map based styling.\n *\n * Map based styling could be anything which contains more than one binding. For example `string`,\n * or object literal. Dealing with all of these types would complicate the logic so\n * instead this function expects that the complex input is first converted into normalized\n * `KeyValueArray`. The advantage of normalization is that we get the values sorted, which makes it\n * very cheap to compute deltas between the previous and current value.\n *\n * @param tView Associated `TView.data` contains the linked list of binding priorities.\n * @param tNode `TNode` where the binding is located.\n * @param lView `LView` contains the values associated with other styling binding at this `TNode`.\n * @param renderer Renderer to use if any updates.\n * @param oldKeyValueArray Previous value represented as `KeyValueArray`\n * @param newKeyValueArray Current value represented as `KeyValueArray`\n * @param isClassBased `true` if `class` (`false` if `style`)\n * @param bindingIndex Binding index of the binding.\n */\n\n\nfunction updateStylingMap(tView, tNode, lView, renderer, oldKeyValueArray, newKeyValueArray, isClassBased, bindingIndex) {\n  if (oldKeyValueArray === NO_CHANGE) {\n    // On first execution the oldKeyValueArray is NO_CHANGE => treat it as empty KeyValueArray.\n    oldKeyValueArray = EMPTY_ARRAY$3;\n  }\n\n  var oldIndex = 0;\n  var newIndex = 0;\n  var oldKey = 0 < oldKeyValueArray.length ? oldKeyValueArray[0] : null;\n  var newKey = 0 < newKeyValueArray.length ? newKeyValueArray[0] : null;\n\n  while (oldKey !== null || newKey !== null) {\n    ngDevMode && assertLessThan(oldIndex, 999, 'Are we stuck in infinite loop?');\n    ngDevMode && assertLessThan(newIndex, 999, 'Are we stuck in infinite loop?');\n    var oldValue = oldIndex < oldKeyValueArray.length ? oldKeyValueArray[oldIndex + 1] : undefined;\n    var newValue = newIndex < newKeyValueArray.length ? newKeyValueArray[newIndex + 1] : undefined;\n    var setKey = null;\n    var setValue = undefined;\n\n    if (oldKey === newKey) {\n      // UPDATE: Keys are equal => new value is overwriting old value.\n      oldIndex += 2;\n      newIndex += 2;\n\n      if (oldValue !== newValue) {\n        setKey = newKey;\n        setValue = newValue;\n      }\n    } else if (newKey === null || oldKey !== null && oldKey < newKey) {\n      // DELETE: oldKey key is missing or we did not find the oldKey in the newValue\n      // (because the keyValueArray is sorted and `newKey` is found later alphabetically).\n      // `\"background\" < \"color\"` so we need to delete `\"background\"` because it is not found in the\n      // new array.\n      oldIndex += 2;\n      setKey = oldKey;\n    } else {\n      // CREATE: newKey's is earlier alphabetically than oldKey's (or no oldKey) => we have new key.\n      // `\"color\" > \"background\"` so we need to add `color` because it is in new array but not in\n      // old array.\n      ngDevMode && assertDefined(newKey, 'Expecting to have a valid key');\n      newIndex += 2;\n      setKey = newKey;\n      setValue = newValue;\n    }\n\n    if (setKey !== null) {\n      updateStyling(tView, tNode, lView, renderer, setKey, setValue, isClassBased, bindingIndex);\n    }\n\n    oldKey = oldIndex < oldKeyValueArray.length ? oldKeyValueArray[oldIndex] : null;\n    newKey = newIndex < newKeyValueArray.length ? newKeyValueArray[newIndex] : null;\n  }\n}\n/**\n * Update a simple (property name) styling.\n *\n * This function takes `prop` and updates the DOM to that value. The function takes the binding\n * value as well as binding priority into consideration to determine which value should be written\n * to DOM. (For example it may be determined that there is a higher priority overwrite which blocks\n * the DOM write, or if the value goes to `undefined` a lower priority overwrite may be consulted.)\n *\n * @param tView Associated `TView.data` contains the linked list of binding priorities.\n * @param tNode `TNode` where the binding is located.\n * @param lView `LView` contains the values associated with other styling binding at this `TNode`.\n * @param renderer Renderer to use if any updates.\n * @param prop Either style property name or a class name.\n * @param value Either style value for `prop` or `true`/`false` if `prop` is class.\n * @param isClassBased `true` if `class` (`false` if `style`)\n * @param bindingIndex Binding index of the binding.\n */\n\n\nfunction updateStyling(tView, tNode, lView, renderer, prop, value, isClassBased, bindingIndex) {\n  if (!(tNode.type & 3\n  /* AnyRNode */\n  )) {\n    // It is possible to have styling on non-elements (such as ng-container).\n    // This is rare, but it does happen. In such a case, just ignore the binding.\n    return;\n  }\n\n  var tData = tView.data;\n  var tRange = tData[bindingIndex + 1];\n  var higherPriorityValue = getTStylingRangeNextDuplicate(tRange) ? findStylingValue(tData, tNode, lView, prop, getTStylingRangeNext(tRange), isClassBased) : undefined;\n\n  if (!isStylingValuePresent(higherPriorityValue)) {\n    // We don't have a next duplicate, or we did not find a duplicate value.\n    if (!isStylingValuePresent(value)) {\n      // We should delete current value or restore to lower priority value.\n      if (getTStylingRangePrevDuplicate(tRange)) {\n        // We have a possible prev duplicate, let's retrieve it.\n        value = findStylingValue(tData, null, lView, prop, bindingIndex, isClassBased);\n      }\n    }\n\n    var rNode = getNativeByIndex(getSelectedIndex(), lView);\n    applyStyling(renderer, isClassBased, rNode, prop, value);\n  }\n}\n/**\n * Search for styling value with higher priority which is overwriting current value, or a\n * value of lower priority to which we should fall back if the value is `undefined`.\n *\n * When value is being applied at a location, related values need to be consulted.\n * - If there is a higher priority binding, we should be using that one instead.\n *   For example `<div  [style]=\"{color:exp1}\" [style.color]=\"exp2\">` change to `exp1`\n *   requires that we check `exp2` to see if it is set to value other than `undefined`.\n * - If there is a lower priority binding and we are changing to `undefined`\n *   For example `<div  [style]=\"{color:exp1}\" [style.color]=\"exp2\">` change to `exp2` to\n *   `undefined` requires that we check `exp1` (and static values) and use that as new value.\n *\n * NOTE: The styling stores two values.\n * 1. The raw value which came from the application is stored at `index + 0` location. (This value\n *    is used for dirty checking).\n * 2. The normalized value is stored at `index + 1`.\n *\n * @param tData `TData` used for traversing the priority.\n * @param tNode `TNode` to use for resolving static styling. Also controls search direction.\n *   - `TNode` search next and quit as soon as `isStylingValuePresent(value)` is true.\n *      If no value found consult `tNode.residualStyle`/`tNode.residualClass` for default value.\n *   - `null` search prev and go all the way to end. Return last value where\n *     `isStylingValuePresent(value)` is true.\n * @param lView `LView` used for retrieving the actual values.\n * @param prop Property which we are interested in.\n * @param index Starting index in the linked list of styling bindings where the search should start.\n * @param isClassBased `true` if `class` (`false` if `style`)\n */\n\n\nfunction findStylingValue(tData, tNode, lView, prop, index, isClassBased) {\n  // `TNode` to use for resolving static styling. Also controls search direction.\n  //   - `TNode` search next and quit as soon as `isStylingValuePresent(value)` is true.\n  //      If no value found consult `tNode.residualStyle`/`tNode.residualClass` for default value.\n  //   - `null` search prev and go all the way to end. Return last value where\n  //     `isStylingValuePresent(value)` is true.\n  var isPrevDirection = tNode === null;\n  var value = undefined;\n\n  while (index > 0) {\n    var rawKey = tData[index];\n    var containsStatics = Array.isArray(rawKey); // Unwrap the key if we contain static values.\n\n    var key = containsStatics ? rawKey[1] : rawKey;\n    var isStylingMap = key === null;\n    var valueAtLViewIndex = lView[index + 1];\n\n    if (valueAtLViewIndex === NO_CHANGE) {\n      // In firstUpdatePass the styling instructions create a linked list of styling.\n      // On subsequent passes it is possible for a styling instruction to try to read a binding\n      // which\n      // has not yet executed. In that case we will find `NO_CHANGE` and we should assume that\n      // we have `undefined` (or empty array in case of styling-map instruction) instead. This\n      // allows the resolution to apply the value (which may later be overwritten when the\n      // binding actually executes.)\n      valueAtLViewIndex = isStylingMap ? EMPTY_ARRAY$3 : undefined;\n    }\n\n    var currentValue = isStylingMap ? keyValueArrayGet(valueAtLViewIndex, prop) : key === prop ? valueAtLViewIndex : undefined;\n\n    if (containsStatics && !isStylingValuePresent(currentValue)) {\n      currentValue = keyValueArrayGet(rawKey, prop);\n    }\n\n    if (isStylingValuePresent(currentValue)) {\n      value = currentValue;\n\n      if (isPrevDirection) {\n        return value;\n      }\n    }\n\n    var tRange = tData[index + 1];\n    index = isPrevDirection ? getTStylingRangePrev(tRange) : getTStylingRangeNext(tRange);\n  }\n\n  if (tNode !== null) {\n    // in case where we are going in next direction AND we did not find anything, we need to\n    // consult residual styling\n    var residual = isClassBased ? tNode.residualClasses : tNode.residualStyles;\n\n    if (residual != null\n    /** OR residual !=== undefined */\n    ) {\n      value = keyValueArrayGet(residual, prop);\n    }\n  }\n\n  return value;\n}\n/**\n * Determines if the binding value should be used (or if the value is 'undefined' and hence priority\n * resolution should be used.)\n *\n * @param value Binding style value.\n */\n\n\nfunction isStylingValuePresent(value) {\n  // Currently only `undefined` value is considered non-binding. That is `undefined` says I don't\n  // have an opinion as to what this binding should be and you should consult other bindings by\n  // priority to determine the valid value.\n  // This is extracted into a single function so that we have a single place to control this.\n  return value !== undefined;\n}\n/**\n * Normalizes and/or adds a suffix to the value.\n *\n * If value is `null`/`undefined` no suffix is added\n * @param value\n * @param suffix\n */\n\n\nfunction normalizeSuffix(value, suffix) {\n  if (value == null\n  /** || value === undefined */\n  ) {// do nothing\n  } else if (typeof suffix === 'string') {\n    value = value + suffix;\n  } else if (_typeof(value) === 'object') {\n    value = stringify(unwrapSafeValue(value));\n  }\n\n  return value;\n}\n/**\n * Tests if the `TNode` has input shadow.\n *\n * An input shadow is when a directive steals (shadows) the input by using `@Input('style')` or\n * `@Input('class')` as input.\n *\n * @param tNode `TNode` which we would like to see if it has shadow.\n * @param isClassBased `true` if `class` (`false` if `style`)\n */\n\n\nfunction hasStylingInputShadow(tNode, isClassBased) {\n  return (tNode.flags & (isClassBased ? 16\n  /* hasClassInput */\n  : 32\n  /* hasStyleInput */\n  )) !== 0;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Create static text node\n *\n * @param index Index of the node in the data array\n * @param value Static string value to write.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵtext(index) {\n  var value = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';\n  var lView = getLView();\n  var tView = getTView();\n  var adjustedIndex = index + HEADER_OFFSET;\n  ngDevMode && assertEqual(getBindingIndex(), tView.bindingStartIndex, 'text nodes should be created before any bindings');\n  ngDevMode && assertIndexInRange(lView, adjustedIndex);\n  var tNode = tView.firstCreatePass ? getOrCreateTNode(tView, adjustedIndex, 1\n  /* Text */\n  , value, null) : tView.data[adjustedIndex];\n  var textNative = lView[adjustedIndex] = createTextNode(lView[RENDERER], value);\n  appendChild(tView, lView, textNative, tNode); // Text nodes are self closing.\n\n  setCurrentTNode(tNode, false);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n *\n * Update text content with a lone bound value\n *\n * Used when a text node has 1 interpolated value in it, an no additional text\n * surrounds that interpolated value:\n *\n * ```html\n * <div>{{v0}}</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate(v0);\n * ```\n * @returns itself, so that it may be chained.\n * @see textInterpolateV\n * @codeGenApi\n */\n\n\nfunction ɵɵtextInterpolate(v0) {\n  ɵɵtextInterpolate1('', v0, '');\n  return ɵɵtextInterpolate;\n}\n/**\n *\n * Update text content with single bound value surrounded by other text.\n *\n * Used when a text node has 1 interpolated value in it:\n *\n * ```html\n * <div>prefix{{v0}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate1('prefix', v0, 'suffix');\n * ```\n * @returns itself, so that it may be chained.\n * @see textInterpolateV\n * @codeGenApi\n */\n\n\nfunction ɵɵtextInterpolate1(prefix, v0, suffix) {\n  var lView = getLView();\n  var interpolated = interpolation1(lView, prefix, v0, suffix);\n\n  if (interpolated !== NO_CHANGE) {\n    textBindingInternal(lView, getSelectedIndex(), interpolated);\n  }\n\n  return ɵɵtextInterpolate1;\n}\n/**\n *\n * Update text content with 2 bound values surrounded by other text.\n *\n * Used when a text node has 2 interpolated values in it:\n *\n * ```html\n * <div>prefix{{v0}}-{{v1}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate2('prefix', v0, '-', v1, 'suffix');\n * ```\n * @returns itself, so that it may be chained.\n * @see textInterpolateV\n * @codeGenApi\n */\n\n\nfunction ɵɵtextInterpolate2(prefix, v0, i0, v1, suffix) {\n  var lView = getLView();\n  var interpolated = interpolation2(lView, prefix, v0, i0, v1, suffix);\n\n  if (interpolated !== NO_CHANGE) {\n    textBindingInternal(lView, getSelectedIndex(), interpolated);\n  }\n\n  return ɵɵtextInterpolate2;\n}\n/**\n *\n * Update text content with 3 bound values surrounded by other text.\n *\n * Used when a text node has 3 interpolated values in it:\n *\n * ```html\n * <div>prefix{{v0}}-{{v1}}-{{v2}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate3(\n * 'prefix', v0, '-', v1, '-', v2, 'suffix');\n * ```\n * @returns itself, so that it may be chained.\n * @see textInterpolateV\n * @codeGenApi\n */\n\n\nfunction ɵɵtextInterpolate3(prefix, v0, i0, v1, i1, v2, suffix) {\n  var lView = getLView();\n  var interpolated = interpolation3(lView, prefix, v0, i0, v1, i1, v2, suffix);\n\n  if (interpolated !== NO_CHANGE) {\n    textBindingInternal(lView, getSelectedIndex(), interpolated);\n  }\n\n  return ɵɵtextInterpolate3;\n}\n/**\n *\n * Update text content with 4 bound values surrounded by other text.\n *\n * Used when a text node has 4 interpolated values in it:\n *\n * ```html\n * <div>prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate4(\n * 'prefix', v0, '-', v1, '-', v2, '-', v3, 'suffix');\n * ```\n * @returns itself, so that it may be chained.\n * @see ɵɵtextInterpolateV\n * @codeGenApi\n */\n\n\nfunction ɵɵtextInterpolate4(prefix, v0, i0, v1, i1, v2, i2, v3, suffix) {\n  var lView = getLView();\n  var interpolated = interpolation4(lView, prefix, v0, i0, v1, i1, v2, i2, v3, suffix);\n\n  if (interpolated !== NO_CHANGE) {\n    textBindingInternal(lView, getSelectedIndex(), interpolated);\n  }\n\n  return ɵɵtextInterpolate4;\n}\n/**\n *\n * Update text content with 5 bound values surrounded by other text.\n *\n * Used when a text node has 5 interpolated values in it:\n *\n * ```html\n * <div>prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate5(\n * 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, 'suffix');\n * ```\n * @returns itself, so that it may be chained.\n * @see textInterpolateV\n * @codeGenApi\n */\n\n\nfunction ɵɵtextInterpolate5(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix) {\n  var lView = getLView();\n  var interpolated = interpolation5(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix);\n\n  if (interpolated !== NO_CHANGE) {\n    textBindingInternal(lView, getSelectedIndex(), interpolated);\n  }\n\n  return ɵɵtextInterpolate5;\n}\n/**\n *\n * Update text content with 6 bound values surrounded by other text.\n *\n * Used when a text node has 6 interpolated values in it:\n *\n * ```html\n * <div>prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate6(\n *    'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, 'suffix');\n * ```\n *\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change. @returns itself, so that it may be chained.\n * @see textInterpolateV\n * @codeGenApi\n */\n\n\nfunction ɵɵtextInterpolate6(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix) {\n  var lView = getLView();\n  var interpolated = interpolation6(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix);\n\n  if (interpolated !== NO_CHANGE) {\n    textBindingInternal(lView, getSelectedIndex(), interpolated);\n  }\n\n  return ɵɵtextInterpolate6;\n}\n/**\n *\n * Update text content with 7 bound values surrounded by other text.\n *\n * Used when a text node has 7 interpolated values in it:\n *\n * ```html\n * <div>prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate7(\n *    'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, 'suffix');\n * ```\n * @returns itself, so that it may be chained.\n * @see textInterpolateV\n * @codeGenApi\n */\n\n\nfunction ɵɵtextInterpolate7(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix) {\n  var lView = getLView();\n  var interpolated = interpolation7(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix);\n\n  if (interpolated !== NO_CHANGE) {\n    textBindingInternal(lView, getSelectedIndex(), interpolated);\n  }\n\n  return ɵɵtextInterpolate7;\n}\n/**\n *\n * Update text content with 8 bound values surrounded by other text.\n *\n * Used when a text node has 8 interpolated values in it:\n *\n * ```html\n * <div>prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolate8(\n *  'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, 'suffix');\n * ```\n * @returns itself, so that it may be chained.\n * @see textInterpolateV\n * @codeGenApi\n */\n\n\nfunction ɵɵtextInterpolate8(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix) {\n  var lView = getLView();\n  var interpolated = interpolation8(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix);\n\n  if (interpolated !== NO_CHANGE) {\n    textBindingInternal(lView, getSelectedIndex(), interpolated);\n  }\n\n  return ɵɵtextInterpolate8;\n}\n/**\n * Update text content with 9 or more bound values other surrounded by text.\n *\n * Used when the number of interpolated values exceeds 8.\n *\n * ```html\n * <div>prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}-{{v8}}-{{v9}}suffix</div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵtextInterpolateV(\n *  ['prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, '-', v9,\n *  'suffix']);\n * ```\n *.\n * @param values The collection of values and the strings in between those values, beginning with\n * a string prefix and ending with a string suffix.\n * (e.g. `['prefix', value0, '-', value1, '-', value2, ..., value99, 'suffix']`)\n *\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵtextInterpolateV(values) {\n  var lView = getLView();\n  var interpolated = interpolationV(lView, values);\n\n  if (interpolated !== NO_CHANGE) {\n    textBindingInternal(lView, getSelectedIndex(), interpolated);\n  }\n\n  return ɵɵtextInterpolateV;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n *\n * Update an interpolated class on an element with single bound value surrounded by text.\n *\n * Used when the value passed to a property has 1 interpolated value in it:\n *\n * ```html\n * <div class=\"prefix{{v0}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolate1('prefix', v0, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\n\n\nfunction ɵɵclassMapInterpolate1(prefix, v0, suffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation1(lView, prefix, v0, suffix);\n  checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n/**\n *\n * Update an interpolated class on an element with 2 bound values surrounded by text.\n *\n * Used when the value passed to a property has 2 interpolated values in it:\n *\n * ```html\n * <div class=\"prefix{{v0}}-{{v1}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolate2('prefix', v0, '-', v1, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\n\n\nfunction ɵɵclassMapInterpolate2(prefix, v0, i0, v1, suffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation2(lView, prefix, v0, i0, v1, suffix);\n  checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n/**\n *\n * Update an interpolated class on an element with 3 bound values surrounded by text.\n *\n * Used when the value passed to a property has 3 interpolated values in it:\n *\n * ```html\n * <div class=\"prefix{{v0}}-{{v1}}-{{v2}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolate3(\n * 'prefix', v0, '-', v1, '-', v2, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\n\n\nfunction ɵɵclassMapInterpolate3(prefix, v0, i0, v1, i1, v2, suffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation3(lView, prefix, v0, i0, v1, i1, v2, suffix);\n  checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n/**\n *\n * Update an interpolated class on an element with 4 bound values surrounded by text.\n *\n * Used when the value passed to a property has 4 interpolated values in it:\n *\n * ```html\n * <div class=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolate4(\n * 'prefix', v0, '-', v1, '-', v2, '-', v3, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\n\n\nfunction ɵɵclassMapInterpolate4(prefix, v0, i0, v1, i1, v2, i2, v3, suffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation4(lView, prefix, v0, i0, v1, i1, v2, i2, v3, suffix);\n  checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n/**\n *\n * Update an interpolated class on an element with 5 bound values surrounded by text.\n *\n * Used when the value passed to a property has 5 interpolated values in it:\n *\n * ```html\n * <div class=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolate5(\n * 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\n\n\nfunction ɵɵclassMapInterpolate5(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation5(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix);\n  checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n/**\n *\n * Update an interpolated class on an element with 6 bound values surrounded by text.\n *\n * Used when the value passed to a property has 6 interpolated values in it:\n *\n * ```html\n * <div class=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolate6(\n *    'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\n\n\nfunction ɵɵclassMapInterpolate6(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation6(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix);\n  checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n/**\n *\n * Update an interpolated class on an element with 7 bound values surrounded by text.\n *\n * Used when the value passed to a property has 7 interpolated values in it:\n *\n * ```html\n * <div class=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolate7(\n *    'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\n\n\nfunction ɵɵclassMapInterpolate7(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation7(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix);\n  checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n/**\n *\n * Update an interpolated class on an element with 8 bound values surrounded by text.\n *\n * Used when the value passed to a property has 8 interpolated values in it:\n *\n * ```html\n * <div class=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolate8(\n *  'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param i6 Static value used for concatenation only.\n * @param v7 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\n\n\nfunction ɵɵclassMapInterpolate8(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation8(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix);\n  checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n/**\n * Update an interpolated class on an element with 9 or more bound values surrounded by text.\n *\n * Used when the number of interpolated values exceeds 8.\n *\n * ```html\n * <div\n *  class=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}-{{v8}}-{{v9}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵclassMapInterpolateV(\n *  ['prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, '-', v9,\n *  'suffix']);\n * ```\n *.\n * @param values The collection of values and the strings in-between those values, beginning with\n * a string prefix and ending with a string suffix.\n * (e.g. `['prefix', value0, '-', value1, '-', value2, ..., value99, 'suffix']`)\n * @codeGenApi\n */\n\n\nfunction ɵɵclassMapInterpolateV(values) {\n  var lView = getLView();\n  var interpolatedValue = interpolationV(lView, values);\n  checkStylingMap(keyValueArraySet, classStringParser, interpolatedValue, true);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n *\n * Update an interpolated style on an element with single bound value surrounded by text.\n *\n * Used when the value passed to a property has 1 interpolated value in it:\n *\n * ```html\n * <div style=\"key: {{v0}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolate1('key: ', v0, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\n\n\nfunction ɵɵstyleMapInterpolate1(prefix, v0, suffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation1(lView, prefix, v0, suffix);\n  ɵɵstyleMap(interpolatedValue);\n}\n/**\n *\n * Update an interpolated style on an element with 2 bound values surrounded by text.\n *\n * Used when the value passed to a property has 2 interpolated values in it:\n *\n * ```html\n * <div style=\"key: {{v0}}; key1: {{v1}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolate2('key: ', v0, '; key1: ', v1, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\n\n\nfunction ɵɵstyleMapInterpolate2(prefix, v0, i0, v1, suffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation2(lView, prefix, v0, i0, v1, suffix);\n  ɵɵstyleMap(interpolatedValue);\n}\n/**\n *\n * Update an interpolated style on an element with 3 bound values surrounded by text.\n *\n * Used when the value passed to a property has 3 interpolated values in it:\n *\n * ```html\n * <div style=\"key: {{v0}}; key2: {{v1}}; key2: {{v2}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolate3(\n *     'key: ', v0, '; key1: ', v1, '; key2: ', v2, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\n\n\nfunction ɵɵstyleMapInterpolate3(prefix, v0, i0, v1, i1, v2, suffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation3(lView, prefix, v0, i0, v1, i1, v2, suffix);\n  ɵɵstyleMap(interpolatedValue);\n}\n/**\n *\n * Update an interpolated style on an element with 4 bound values surrounded by text.\n *\n * Used when the value passed to a property has 4 interpolated values in it:\n *\n * ```html\n * <div style=\"key: {{v0}}; key1: {{v1}}; key2: {{v2}}; key3: {{v3}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolate4(\n *     'key: ', v0, '; key1: ', v1, '; key2: ', v2, '; key3: ', v3, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\n\n\nfunction ɵɵstyleMapInterpolate4(prefix, v0, i0, v1, i1, v2, i2, v3, suffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation4(lView, prefix, v0, i0, v1, i1, v2, i2, v3, suffix);\n  ɵɵstyleMap(interpolatedValue);\n}\n/**\n *\n * Update an interpolated style on an element with 5 bound values surrounded by text.\n *\n * Used when the value passed to a property has 5 interpolated values in it:\n *\n * ```html\n * <div style=\"key: {{v0}}; key1: {{v1}}; key2: {{v2}}; key3: {{v3}}; key4: {{v4}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolate5(\n *     'key: ', v0, '; key1: ', v1, '; key2: ', v2, '; key3: ', v3, '; key4: ', v4, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\n\n\nfunction ɵɵstyleMapInterpolate5(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation5(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix);\n  ɵɵstyleMap(interpolatedValue);\n}\n/**\n *\n * Update an interpolated style on an element with 6 bound values surrounded by text.\n *\n * Used when the value passed to a property has 6 interpolated values in it:\n *\n * ```html\n * <div style=\"key: {{v0}}; key1: {{v1}}; key2: {{v2}}; key3: {{v3}}; key4: {{v4}};\n *             key5: {{v5}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolate6(\n *    'key: ', v0, '; key1: ', v1, '; key2: ', v2, '; key3: ', v3, '; key4: ', v4, '; key5: ', v5,\n *    'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\n\n\nfunction ɵɵstyleMapInterpolate6(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation6(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix);\n  ɵɵstyleMap(interpolatedValue);\n}\n/**\n *\n * Update an interpolated style on an element with 7 bound values surrounded by text.\n *\n * Used when the value passed to a property has 7 interpolated values in it:\n *\n * ```html\n * <div style=\"key: {{v0}}; key1: {{v1}}; key2: {{v2}}; key3: {{v3}}; key4: {{v4}}; key5: {{v5}};\n *             key6: {{v6}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolate7(\n *    'key: ', v0, '; key1: ', v1, '; key2: ', v2, '; key3: ', v3, '; key4: ', v4, '; key5: ', v5,\n *    '; key6: ', v6, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\n\n\nfunction ɵɵstyleMapInterpolate7(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation7(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix);\n  ɵɵstyleMap(interpolatedValue);\n}\n/**\n *\n * Update an interpolated style on an element with 8 bound values surrounded by text.\n *\n * Used when the value passed to a property has 8 interpolated values in it:\n *\n * ```html\n * <div style=\"key: {{v0}}; key1: {{v1}}; key2: {{v2}}; key3: {{v3}}; key4: {{v4}}; key5: {{v5}};\n *             key6: {{v6}}; key7: {{v7}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolate8(\n *    'key: ', v0, '; key1: ', v1, '; key2: ', v2, '; key3: ', v3, '; key4: ', v4, '; key5: ', v5,\n *    '; key6: ', v6, '; key7: ', v7, 'suffix');\n * ```\n *\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param i6 Static value used for concatenation only.\n * @param v7 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @codeGenApi\n */\n\n\nfunction ɵɵstyleMapInterpolate8(prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation8(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix);\n  ɵɵstyleMap(interpolatedValue);\n}\n/**\n * Update an interpolated style on an element with 9 or more bound values surrounded by text.\n *\n * Used when the number of interpolated values exceeds 8.\n *\n * ```html\n * <div\n *  class=\"key: {{v0}}; key1: {{v1}}; key2: {{v2}}; key3: {{v3}}; key4: {{v4}}; key5: {{v5}};\n *         key6: {{v6}}; key7: {{v7}}; key8: {{v8}}; key9: {{v9}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstyleMapInterpolateV(\n *    ['key: ', v0, '; key1: ', v1, '; key2: ', v2, '; key3: ', v3, '; key4: ', v4, '; key5: ', v5,\n *     '; key6: ', v6, '; key7: ', v7, '; key8: ', v8, '; key9: ', v9, 'suffix']);\n * ```\n *.\n * @param values The collection of values and the strings in-between those values, beginning with\n * a string prefix and ending with a string suffix.\n * (e.g. `['prefix', value0, '; key2: ', value1, '; key2: ', value2, ..., value99, 'suffix']`)\n * @codeGenApi\n */\n\n\nfunction ɵɵstyleMapInterpolateV(values) {\n  var lView = getLView();\n  var interpolatedValue = interpolationV(lView, values);\n  ɵɵstyleMap(interpolatedValue);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n *\n * Update an interpolated style property on an element with single bound value surrounded by text.\n *\n * Used when the value passed to a property has 1 interpolated value in it:\n *\n * ```html\n * <div style.color=\"prefix{{v0}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolate1(0, 'prefix', v0, 'suffix');\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`.\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵstylePropInterpolate1(prop, prefix, v0, suffix, valueSuffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation1(lView, prefix, v0, suffix);\n  checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n  return ɵɵstylePropInterpolate1;\n}\n/**\n *\n * Update an interpolated style property on an element with 2 bound values surrounded by text.\n *\n * Used when the value passed to a property has 2 interpolated values in it:\n *\n * ```html\n * <div style.color=\"prefix{{v0}}-{{v1}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolate2(0, 'prefix', v0, '-', v1, 'suffix');\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`.\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵstylePropInterpolate2(prop, prefix, v0, i0, v1, suffix, valueSuffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation2(lView, prefix, v0, i0, v1, suffix);\n  checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n  return ɵɵstylePropInterpolate2;\n}\n/**\n *\n * Update an interpolated style property on an element with 3 bound values surrounded by text.\n *\n * Used when the value passed to a property has 3 interpolated values in it:\n *\n * ```html\n * <div style.color=\"prefix{{v0}}-{{v1}}-{{v2}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolate3(0, 'prefix', v0, '-', v1, '-', v2, 'suffix');\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`.\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵstylePropInterpolate3(prop, prefix, v0, i0, v1, i1, v2, suffix, valueSuffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation3(lView, prefix, v0, i0, v1, i1, v2, suffix);\n  checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n  return ɵɵstylePropInterpolate3;\n}\n/**\n *\n * Update an interpolated style property on an element with 4 bound values surrounded by text.\n *\n * Used when the value passed to a property has 4 interpolated values in it:\n *\n * ```html\n * <div style.color=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolate4(0, 'prefix', v0, '-', v1, '-', v2, '-', v3, 'suffix');\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`.\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵstylePropInterpolate4(prop, prefix, v0, i0, v1, i1, v2, i2, v3, suffix, valueSuffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation4(lView, prefix, v0, i0, v1, i1, v2, i2, v3, suffix);\n  checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n  return ɵɵstylePropInterpolate4;\n}\n/**\n *\n * Update an interpolated style property on an element with 5 bound values surrounded by text.\n *\n * Used when the value passed to a property has 5 interpolated values in it:\n *\n * ```html\n * <div style.color=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolate5(0, 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, 'suffix');\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`.\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵstylePropInterpolate5(prop, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix, valueSuffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation5(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, suffix);\n  checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n  return ɵɵstylePropInterpolate5;\n}\n/**\n *\n * Update an interpolated style property on an element with 6 bound values surrounded by text.\n *\n * Used when the value passed to a property has 6 interpolated values in it:\n *\n * ```html\n * <div style.color=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolate6(0, 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, 'suffix');\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`.\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵstylePropInterpolate6(prop, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix, valueSuffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation6(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, suffix);\n  checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n  return ɵɵstylePropInterpolate6;\n}\n/**\n *\n * Update an interpolated style property on an element with 7 bound values surrounded by text.\n *\n * Used when the value passed to a property has 7 interpolated values in it:\n *\n * ```html\n * <div style.color=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolate7(\n *    0, 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, 'suffix');\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`.\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵstylePropInterpolate7(prop, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix, valueSuffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation7(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, suffix);\n  checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n  return ɵɵstylePropInterpolate7;\n}\n/**\n *\n * Update an interpolated style property on an element with 8 bound values surrounded by text.\n *\n * Used when the value passed to a property has 8 interpolated values in it:\n *\n * ```html\n * <div style.color=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}suffix\"></div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolate8(0, 'prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6,\n * '-', v7, 'suffix');\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`.\n * @param prefix Static value used for concatenation only.\n * @param v0 Value checked for change.\n * @param i0 Static value used for concatenation only.\n * @param v1 Value checked for change.\n * @param i1 Static value used for concatenation only.\n * @param v2 Value checked for change.\n * @param i2 Static value used for concatenation only.\n * @param v3 Value checked for change.\n * @param i3 Static value used for concatenation only.\n * @param v4 Value checked for change.\n * @param i4 Static value used for concatenation only.\n * @param v5 Value checked for change.\n * @param i5 Static value used for concatenation only.\n * @param v6 Value checked for change.\n * @param i6 Static value used for concatenation only.\n * @param v7 Value checked for change.\n * @param suffix Static value used for concatenation only.\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵstylePropInterpolate8(prop, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix, valueSuffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolation8(lView, prefix, v0, i0, v1, i1, v2, i2, v3, i3, v4, i4, v5, i5, v6, i6, v7, suffix);\n  checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n  return ɵɵstylePropInterpolate8;\n}\n/**\n * Update an interpolated style property on an element with 9 or more bound values surrounded by\n * text.\n *\n * Used when the number of interpolated values exceeds 8.\n *\n * ```html\n * <div\n *  style.color=\"prefix{{v0}}-{{v1}}-{{v2}}-{{v3}}-{{v4}}-{{v5}}-{{v6}}-{{v7}}-{{v8}}-{{v9}}suffix\">\n * </div>\n * ```\n *\n * Its compiled representation is:\n *\n * ```ts\n * ɵɵstylePropInterpolateV(\n *  0, ['prefix', v0, '-', v1, '-', v2, '-', v3, '-', v4, '-', v5, '-', v6, '-', v7, '-', v9,\n *  'suffix']);\n * ```\n *\n * @param styleIndex Index of style to update. This index value refers to the\n *        index of the style in the style bindings array that was passed into\n *        `styling`..\n * @param values The collection of values and the strings in-between those values, beginning with\n * a string prefix and ending with a string suffix.\n * (e.g. `['prefix', value0, '-', value1, '-', value2, ..., value99, 'suffix']`)\n * @param valueSuffix Optional suffix. Used with scalar values to add unit such as `px`.\n * @returns itself, so that it may be chained.\n * @codeGenApi\n */\n\n\nfunction ɵɵstylePropInterpolateV(prop, values, valueSuffix) {\n  var lView = getLView();\n  var interpolatedValue = interpolationV(lView, values);\n  checkStylingProperty(prop, interpolatedValue, valueSuffix, false);\n  return ɵɵstylePropInterpolateV;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Update a property on a host element. Only applies to native node properties, not inputs.\n *\n * Operates on the element selected by index via the {@link select} instruction.\n *\n * @param propName Name of property. Because it is going to DOM, this is not subject to\n *        renaming as part of minification.\n * @param value New value to write.\n * @param sanitizer An optional function used to sanitize the value.\n * @returns This function returns itself so that it may be chained\n * (e.g. `property('name', ctx.name)('title', ctx.title)`)\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵhostProperty(propName, value, sanitizer) {\n  var lView = getLView();\n  var bindingIndex = nextBindingIndex();\n\n  if (bindingUpdated(lView, bindingIndex, value)) {\n    var tView = getTView();\n    var tNode = getSelectedTNode();\n    elementPropertyInternal(tView, tNode, lView, propName, value, lView[RENDERER], sanitizer, true);\n    ngDevMode && storePropertyBindingMetadata(tView.data, tNode, propName, bindingIndex);\n  }\n\n  return ɵɵhostProperty;\n}\n/**\n * Updates a synthetic host binding (e.g. `[@foo]`) on a component or directive.\n *\n * This instruction is for compatibility purposes and is designed to ensure that a\n * synthetic host binding (e.g. `@HostBinding('@foo')`) properly gets rendered in\n * the component's renderer. Normally all host bindings are evaluated with the parent\n * component's renderer, but, in the case of animation @triggers, they need to be\n * evaluated with the sub component's renderer (because that's where the animation\n * triggers are defined).\n *\n * Do not use this instruction as a replacement for `elementProperty`. This instruction\n * only exists to ensure compatibility with the ViewEngine's host binding behavior.\n *\n * @param index The index of the element to update in the data array\n * @param propName Name of property. Because it is going to DOM, this is not subject to\n *        renaming as part of minification.\n * @param value New value to write.\n * @param sanitizer An optional function used to sanitize the value.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵsyntheticHostProperty(propName, value, sanitizer) {\n  var lView = getLView();\n  var bindingIndex = nextBindingIndex();\n\n  if (bindingUpdated(lView, bindingIndex, value)) {\n    var tView = getTView();\n    var tNode = getSelectedTNode();\n    var currentDef = getCurrentDirectiveDef(tView.data);\n    var renderer = loadComponentRenderer(currentDef, tNode, lView);\n    elementPropertyInternal(tView, tNode, lView, propName, value, renderer, sanitizer, true);\n    ngDevMode && storePropertyBindingMetadata(tView.data, tNode, propName, bindingIndex);\n  }\n\n  return ɵɵsyntheticHostProperty;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * NOTE: changes to the `ngI18nClosureMode` name must be synced with `compiler-cli/src/tooling.ts`.\n */\n\n\nif (typeof ngI18nClosureMode === 'undefined') {\n  // These property accesses can be ignored because ngI18nClosureMode will be set to false\n  // when optimizing code and the whole if statement will be dropped.\n  // Make sure to refer to ngI18nClosureMode as ['ngI18nClosureMode'] for closure.\n  // NOTE: we need to have it in IIFE so that the tree-shaker is happy.\n  (function () {\n    // tslint:disable-next-line:no-toplevel-property-access\n    _global['ngI18nClosureMode'] = // TODO(FW-1250): validate that this actually, you know, works.\n    // tslint:disable-next-line:no-toplevel-property-access\n    typeof goog !== 'undefined' && typeof goog.getMsg === 'function';\n  })();\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// THIS CODE IS GENERATED - DO NOT MODIFY\n// See angular/tools/gulp-tasks/cldr/extract.js\n\n\nvar u = undefined;\n\nfunction plural(n) {\n  var i = Math.floor(Math.abs(n)),\n      v = n.toString().replace(/^[^.]*\\.?/, '').length;\n  if (i === 1 && v === 0) return 1;\n  return 5;\n}\n\nvar localeEn = ['en', [['a', 'p'], ['AM', 'PM'], u], [['AM', 'PM'], u, u], [['S', 'M', 'T', 'W', 'T', 'F', 'S'], ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'], ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'], ['Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa']], u, [['J', 'F', 'M', 'A', 'M', 'J', 'J', 'A', 'S', 'O', 'N', 'D'], ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'], ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December']], u, [['B', 'A'], ['BC', 'AD'], ['Before Christ', 'Anno Domini']], 0, [6, 0], ['M/d/yy', 'MMM d, y', 'MMMM d, y', 'EEEE, MMMM d, y'], ['h:mm a', 'h:mm:ss a', 'h:mm:ss a z', 'h:mm:ss a zzzz'], ['{1}, {0}', u, '{1} \\'at\\' {0}', u], ['.', ',', ';', '%', '+', '-', 'E', '×', '‰', '∞', 'NaN', ':'], ['#,##0.###', '#,##0%', '¤#,##0.00', '#E0'], 'USD', '$', 'US Dollar', {}, 'ltr', plural];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * This const is used to store the locale data registered with `registerLocaleData`\n */\n\nvar LOCALE_DATA = {};\n/**\n * Register locale data to be used internally by Angular. See the\n * [\"I18n guide\"](guide/i18n#i18n-pipes) to know how to import additional locale data.\n *\n * The signature `registerLocaleData(data: any, extraData?: any)` is deprecated since v5.1\n */\n\nfunction registerLocaleData(data, localeId, extraData) {\n  if (typeof localeId !== 'string') {\n    extraData = localeId;\n    localeId = data[LocaleDataIndex.LocaleId];\n  }\n\n  localeId = localeId.toLowerCase().replace(/_/g, '-');\n  LOCALE_DATA[localeId] = data;\n\n  if (extraData) {\n    LOCALE_DATA[localeId][LocaleDataIndex.ExtraData] = extraData;\n  }\n}\n/**\n * Finds the locale data for a given locale.\n *\n * @param locale The locale code.\n * @returns The locale data.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n */\n\n\nfunction findLocaleData(locale) {\n  var normalizedLocale = normalizeLocale(locale);\n  var match = getLocaleData(normalizedLocale);\n\n  if (match) {\n    return match;\n  } // let's try to find a parent locale\n\n\n  var parentLocale = normalizedLocale.split('-')[0];\n  match = getLocaleData(parentLocale);\n\n  if (match) {\n    return match;\n  }\n\n  if (parentLocale === 'en') {\n    return localeEn;\n  }\n\n  throw new Error(\"Missing locale data for the locale \\\"\".concat(locale, \"\\\".\"));\n}\n/**\n * Retrieves the default currency code for the given locale.\n *\n * The default is defined as the first currency which is still in use.\n *\n * @param locale The code of the locale whose currency code we want.\n * @returns The code of the default currency for the given locale.\n *\n */\n\n\nfunction getLocaleCurrencyCode(locale) {\n  var data = findLocaleData(locale);\n  return data[LocaleDataIndex.CurrencyCode] || null;\n}\n/**\n * Retrieves the plural function used by ICU expressions to determine the plural case to use\n * for a given locale.\n * @param locale A locale code for the locale format rules to use.\n * @returns The plural function for the locale.\n * @see `NgPlural`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n */\n\n\nfunction getLocalePluralCase(locale) {\n  var data = findLocaleData(locale);\n  return data[LocaleDataIndex.PluralCase];\n}\n/**\n * Helper function to get the given `normalizedLocale` from `LOCALE_DATA`\n * or from the global `ng.common.locale`.\n */\n\n\nfunction getLocaleData(normalizedLocale) {\n  if (!(normalizedLocale in LOCALE_DATA)) {\n    LOCALE_DATA[normalizedLocale] = _global.ng && _global.ng.common && _global.ng.common.locales && _global.ng.common.locales[normalizedLocale];\n  }\n\n  return LOCALE_DATA[normalizedLocale];\n}\n/**\n * Helper function to remove all the locale data from `LOCALE_DATA`.\n */\n\n\nfunction unregisterAllLocaleData() {\n  LOCALE_DATA = {};\n}\n/**\n * Index of each type of locale data from the locale data array\n */\n\n\nvar LocaleDataIndex;\n\n(function (LocaleDataIndex) {\n  LocaleDataIndex[LocaleDataIndex[\"LocaleId\"] = 0] = \"LocaleId\";\n  LocaleDataIndex[LocaleDataIndex[\"DayPeriodsFormat\"] = 1] = \"DayPeriodsFormat\";\n  LocaleDataIndex[LocaleDataIndex[\"DayPeriodsStandalone\"] = 2] = \"DayPeriodsStandalone\";\n  LocaleDataIndex[LocaleDataIndex[\"DaysFormat\"] = 3] = \"DaysFormat\";\n  LocaleDataIndex[LocaleDataIndex[\"DaysStandalone\"] = 4] = \"DaysStandalone\";\n  LocaleDataIndex[LocaleDataIndex[\"MonthsFormat\"] = 5] = \"MonthsFormat\";\n  LocaleDataIndex[LocaleDataIndex[\"MonthsStandalone\"] = 6] = \"MonthsStandalone\";\n  LocaleDataIndex[LocaleDataIndex[\"Eras\"] = 7] = \"Eras\";\n  LocaleDataIndex[LocaleDataIndex[\"FirstDayOfWeek\"] = 8] = \"FirstDayOfWeek\";\n  LocaleDataIndex[LocaleDataIndex[\"WeekendRange\"] = 9] = \"WeekendRange\";\n  LocaleDataIndex[LocaleDataIndex[\"DateFormat\"] = 10] = \"DateFormat\";\n  LocaleDataIndex[LocaleDataIndex[\"TimeFormat\"] = 11] = \"TimeFormat\";\n  LocaleDataIndex[LocaleDataIndex[\"DateTimeFormat\"] = 12] = \"DateTimeFormat\";\n  LocaleDataIndex[LocaleDataIndex[\"NumberSymbols\"] = 13] = \"NumberSymbols\";\n  LocaleDataIndex[LocaleDataIndex[\"NumberFormats\"] = 14] = \"NumberFormats\";\n  LocaleDataIndex[LocaleDataIndex[\"CurrencyCode\"] = 15] = \"CurrencyCode\";\n  LocaleDataIndex[LocaleDataIndex[\"CurrencySymbol\"] = 16] = \"CurrencySymbol\";\n  LocaleDataIndex[LocaleDataIndex[\"CurrencyName\"] = 17] = \"CurrencyName\";\n  LocaleDataIndex[LocaleDataIndex[\"Currencies\"] = 18] = \"Currencies\";\n  LocaleDataIndex[LocaleDataIndex[\"Directionality\"] = 19] = \"Directionality\";\n  LocaleDataIndex[LocaleDataIndex[\"PluralCase\"] = 20] = \"PluralCase\";\n  LocaleDataIndex[LocaleDataIndex[\"ExtraData\"] = 21] = \"ExtraData\";\n})(LocaleDataIndex || (LocaleDataIndex = {}));\n/**\n * Returns the canonical form of a locale name - lowercase with `_` replaced with `-`.\n */\n\n\nfunction normalizeLocale(locale) {\n  return locale.toLowerCase().replace(/_/g, '-');\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar pluralMapping = ['zero', 'one', 'two', 'few', 'many'];\n/**\n * Returns the plural case based on the locale\n */\n\nfunction getPluralCase(value, locale) {\n  var plural = getLocalePluralCase(locale)(parseInt(value, 10));\n  var result = pluralMapping[plural];\n  return result !== undefined ? result : 'other';\n}\n/**\n * The locale id that the application is using by default (for translations and ICU expressions).\n */\n\n\nvar DEFAULT_LOCALE_ID = 'en-US';\n/**\n * USD currency code that the application uses by default for CurrencyPipe when no\n * DEFAULT_CURRENCY_CODE is provided.\n */\n\nvar USD_CURRENCY_CODE = 'USD';\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Marks that the next string is an element name.\n *\n * See `I18nMutateOpCodes` documentation.\n */\n\nvar ELEMENT_MARKER = {\n  marker: 'element'\n};\n/**\n * Marks that the next string is comment text need for ICU.\n *\n * See `I18nMutateOpCodes` documentation.\n */\n\nvar ICU_MARKER = {\n  marker: 'ICU'\n};\n/**\n * See `I18nCreateOpCodes`\n */\n\nvar I18nCreateOpCode;\n\n(function (I18nCreateOpCode) {\n  /**\n   * Number of bits to shift index so that it can be combined with the `APPEND_EAGERLY` and\n   * `COMMENT`.\n   */\n  I18nCreateOpCode[I18nCreateOpCode[\"SHIFT\"] = 2] = \"SHIFT\";\n  /**\n   * Should the node be appended to parent imedditatly after creation.\n   */\n\n  I18nCreateOpCode[I18nCreateOpCode[\"APPEND_EAGERLY\"] = 1] = \"APPEND_EAGERLY\";\n  /**\n   * If set the node should be comment (rather than a text) node.\n   */\n\n  I18nCreateOpCode[I18nCreateOpCode[\"COMMENT\"] = 2] = \"COMMENT\";\n})(I18nCreateOpCode || (I18nCreateOpCode = {})); // Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\n\n\nvar unusedValueExportToPlacateAjd$6 = 1;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * The locale id that the application is currently using (for translations and ICU expressions).\n * This is the ivy version of `LOCALE_ID` that was defined as an injection token for the view engine\n * but is now defined as a global value.\n */\n\nvar LOCALE_ID = DEFAULT_LOCALE_ID;\n/**\n * Sets the locale id that will be used for translations and ICU expressions.\n * This is the ivy version of `LOCALE_ID` that was defined as an injection token for the view engine\n * but is now defined as a global value.\n *\n * @param localeId\n */\n\nfunction setLocaleId(localeId) {\n  assertDefined(localeId, \"Expected localeId to be defined\");\n\n  if (typeof localeId === 'string') {\n    LOCALE_ID = localeId.toLowerCase().replace(/_/g, '-');\n  }\n}\n/**\n * Gets the locale id that will be used for translations and ICU expressions.\n * This is the ivy version of `LOCALE_ID` that was defined as an injection token for the view engine\n * but is now defined as a global value.\n */\n\n\nfunction getLocaleId() {\n  return LOCALE_ID;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Find a node in front of which `currentTNode` should be inserted (takes i18n into account).\n *\n * This method determines the `RNode` in front of which we should insert the `currentRNode`. This\n * takes `TNode.insertBeforeIndex` into account.\n *\n * @param parentTNode parent `TNode`\n * @param currentTNode current `TNode` (The node which we would like to insert into the DOM)\n * @param lView current `LView`\n */\n\n\nfunction getInsertInFrontOfRNodeWithI18n(parentTNode, currentTNode, lView) {\n  var tNodeInsertBeforeIndex = currentTNode.insertBeforeIndex;\n  var insertBeforeIndex = Array.isArray(tNodeInsertBeforeIndex) ? tNodeInsertBeforeIndex[0] : tNodeInsertBeforeIndex;\n\n  if (insertBeforeIndex === null) {\n    return getInsertInFrontOfRNodeWithNoI18n(parentTNode, currentTNode, lView);\n  } else {\n    ngDevMode && assertIndexInRange(lView, insertBeforeIndex);\n    return unwrapRNode(lView[insertBeforeIndex]);\n  }\n}\n/**\n * Process `TNode.insertBeforeIndex` by adding i18n text nodes.\n *\n * See `TNode.insertBeforeIndex`\n */\n\n\nfunction processI18nInsertBefore(renderer, childTNode, lView, childRNode, parentRElement) {\n  var tNodeInsertBeforeIndex = childTNode.insertBeforeIndex;\n\n  if (Array.isArray(tNodeInsertBeforeIndex)) {\n    // An array indicates that there are i18n nodes that need to be added as children of this\n    // `childRNode`. These i18n nodes were created before this `childRNode` was available and so\n    // only now can be added. The first element of the array is the normal index where we should\n    // insert the `childRNode`. Additional elements are the extra nodes to be added as children of\n    // `childRNode`.\n    ngDevMode && assertDomNode(childRNode);\n    var i18nParent = childRNode;\n    var anchorRNode = null;\n\n    if (!(childTNode.type & 3\n    /* AnyRNode */\n    )) {\n      anchorRNode = i18nParent;\n      i18nParent = parentRElement;\n    }\n\n    if (i18nParent !== null && (childTNode.flags & 2\n    /* isComponentHost */\n    ) === 0) {\n      for (var i = 1; i < tNodeInsertBeforeIndex.length; i++) {\n        // No need to `unwrapRNode` because all of the indexes point to i18n text nodes.\n        // see `assertDomNode` below.\n        var i18nChild = lView[tNodeInsertBeforeIndex[i]];\n        nativeInsertBefore(renderer, i18nParent, i18nChild, anchorRNode, false);\n      }\n    }\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Add `tNode` to `previousTNodes` list and update relevant `TNode`s in `previousTNodes` list\n * `tNode.insertBeforeIndex`.\n *\n * Things to keep in mind:\n * 1. All i18n text nodes are encoded as `TNodeType.Element` and are created eagerly by the\n *    `ɵɵi18nStart` instruction.\n * 2. All `TNodeType.Placeholder` `TNodes` are elements which will be created later by\n *    `ɵɵelementStart` instruction.\n * 3. `ɵɵelementStart` instruction will create `TNode`s in the ascending `TNode.index` order. (So a\n *    smaller index `TNode` is guaranteed to be created before a larger one)\n *\n * We use the above three invariants to determine `TNode.insertBeforeIndex`.\n *\n * In an ideal world `TNode.insertBeforeIndex` would always be `TNode.next.index`. However,\n * this will not work because `TNode.next.index` may be larger than `TNode.index` which means that\n * the next node is not yet created and therefore we can't insert in front of it.\n *\n * Rule1: `TNode.insertBeforeIndex = null` if `TNode.next === null` (Initial condition, as we don't\n *        know if there will be further `TNode`s inserted after.)\n * Rule2: If `previousTNode` is created after the `tNode` being inserted, then\n *        `previousTNode.insertBeforeNode = tNode.index` (So when a new `tNode` is added we check\n *        previous to see if we can update its `insertBeforeTNode`)\n *\n * See `TNode.insertBeforeIndex` for more context.\n *\n * @param previousTNodes A list of previous TNodes so that we can easily traverse `TNode`s in\n *     reverse order. (If `TNode` would have `previous` this would not be necessary.)\n * @param newTNode A TNode to add to the `previousTNodes` list.\n */\n\n\nfunction addTNodeAndUpdateInsertBeforeIndex(previousTNodes, newTNode) {\n  // Start with Rule1\n  ngDevMode && assertEqual(newTNode.insertBeforeIndex, null, 'We expect that insertBeforeIndex is not set');\n  previousTNodes.push(newTNode);\n\n  if (previousTNodes.length > 1) {\n    for (var i = previousTNodes.length - 2; i >= 0; i--) {\n      var existingTNode = previousTNodes[i]; // Text nodes are created eagerly and so they don't need their `indexBeforeIndex` updated.\n      // It is safe to ignore them.\n\n      if (!isI18nText(existingTNode)) {\n        if (isNewTNodeCreatedBefore(existingTNode, newTNode) && getInsertBeforeIndex(existingTNode) === null) {\n          // If it was created before us in time, (and it does not yet have `insertBeforeIndex`)\n          // then add the `insertBeforeIndex`.\n          setInsertBeforeIndex(existingTNode, newTNode.index);\n        }\n      }\n    }\n  }\n}\n\nfunction isI18nText(tNode) {\n  return !(tNode.type & 64\n  /* Placeholder */\n  );\n}\n\nfunction isNewTNodeCreatedBefore(existingTNode, newTNode) {\n  return isI18nText(newTNode) || existingTNode.index > newTNode.index;\n}\n\nfunction getInsertBeforeIndex(tNode) {\n  var index = tNode.insertBeforeIndex;\n  return Array.isArray(index) ? index[0] : index;\n}\n\nfunction setInsertBeforeIndex(tNode, value) {\n  var index = tNode.insertBeforeIndex;\n\n  if (Array.isArray(index)) {\n    // Array is stored if we have to insert child nodes. See `TNode.insertBeforeIndex`\n    index[0] = value;\n  } else {\n    setI18nHandling(getInsertInFrontOfRNodeWithI18n, processI18nInsertBefore);\n    tNode.insertBeforeIndex = value;\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Retrieve `TIcu` at a given `index`.\n *\n * The `TIcu` can be stored either directly (if it is nested ICU) OR\n * it is stored inside tho `TIcuContainer` if it is top level ICU.\n *\n * The reason for this is that the top level ICU need a `TNode` so that they are part of the render\n * tree, but nested ICU's have no TNode, because we don't know ahead of time if the nested ICU is\n * expressed (parent ICU may have selected a case which does not contain it.)\n *\n * @param tView Current `TView`.\n * @param index Index where the value should be read from.\n */\n\n\nfunction getTIcu(tView, index) {\n  var value = tView.data[index];\n  if (value === null || typeof value === 'string') return null;\n\n  if (ngDevMode && !(value.hasOwnProperty('tViews') || value.hasOwnProperty('currentCaseLViewIndex'))) {\n    throwError('We expect to get \\'null\\'|\\'TIcu\\'|\\'TIcuContainer\\', but got: ' + value);\n  } // Here the `value.hasOwnProperty('currentCaseLViewIndex')` is a polymorphic read as it can be\n  // either TIcu or TIcuContainerNode. This is not ideal, but we still think it is OK because it\n  // will be just two cases which fits into the browser inline cache (inline cache can take up to\n  // 4)\n\n\n  var tIcu = value.hasOwnProperty('currentCaseLViewIndex') ? value : value.value;\n  ngDevMode && assertTIcu(tIcu);\n  return tIcu;\n}\n/**\n * Store `TIcu` at a give `index`.\n *\n * The `TIcu` can be stored either directly (if it is nested ICU) OR\n * it is stored inside tho `TIcuContainer` if it is top level ICU.\n *\n * The reason for this is that the top level ICU need a `TNode` so that they are part of the render\n * tree, but nested ICU's have no TNode, because we don't know ahead of time if the nested ICU is\n * expressed (parent ICU may have selected a case which does not contain it.)\n *\n * @param tView Current `TView`.\n * @param index Index where the value should be stored at in `Tview.data`\n * @param tIcu The TIcu to store.\n */\n\n\nfunction setTIcu(tView, index, tIcu) {\n  var tNode = tView.data[index];\n  ngDevMode && assertEqual(tNode === null || tNode.hasOwnProperty('tViews'), true, 'We expect to get \\'null\\'|\\'TIcuContainer\\'');\n\n  if (tNode === null) {\n    tView.data[index] = tIcu;\n  } else {\n    ngDevMode && assertTNodeType(tNode, 32\n    /* Icu */\n    );\n    tNode.value = tIcu;\n  }\n}\n/**\n * Set `TNode.insertBeforeIndex` taking the `Array` into account.\n *\n * See `TNode.insertBeforeIndex`\n */\n\n\nfunction setTNodeInsertBeforeIndex(tNode, index) {\n  ngDevMode && assertTNode(tNode);\n  var insertBeforeIndex = tNode.insertBeforeIndex;\n\n  if (insertBeforeIndex === null) {\n    setI18nHandling(getInsertInFrontOfRNodeWithI18n, processI18nInsertBefore);\n    insertBeforeIndex = tNode.insertBeforeIndex = [null\n    /* may be updated to number later */\n    , index];\n  } else {\n    assertEqual(Array.isArray(insertBeforeIndex), true, 'Expecting array here');\n    insertBeforeIndex.push(index);\n  }\n}\n/**\n * Create `TNode.type=TNodeType.Placeholder` node.\n *\n * See `TNodeType.Placeholder` for more information.\n */\n\n\nfunction createTNodePlaceholder(tView, previousTNodes, index) {\n  var tNode = createTNodeAtIndex(tView, index, 64\n  /* Placeholder */\n  , null, null);\n  addTNodeAndUpdateInsertBeforeIndex(previousTNodes, tNode);\n  return tNode;\n}\n/**\n * Returns current ICU case.\n *\n * ICU cases are stored as index into the `TIcu.cases`.\n * At times it is necessary to communicate that the ICU case just switched and that next ICU update\n * should update all bindings regardless of the mask. In such a case the we store negative numbers\n * for cases which have just been switched. This function removes the negative flag.\n */\n\n\nfunction getCurrentICUCaseIndex(tIcu, lView) {\n  var currentCase = lView[tIcu.currentCaseLViewIndex];\n  return currentCase === null ? currentCase : currentCase < 0 ? ~currentCase : currentCase;\n}\n\nfunction getParentFromIcuCreateOpCode(mergedCode) {\n  return mergedCode >>> 17\n  /* SHIFT_PARENT */\n  ;\n}\n\nfunction getRefFromIcuCreateOpCode(mergedCode) {\n  return (mergedCode & 131070\n  /* MASK_REF */\n  ) >>> 1\n  /* SHIFT_REF */\n  ;\n}\n\nfunction getInstructionFromIcuCreateOpCode(mergedCode) {\n  return mergedCode & 1\n  /* MASK_INSTRUCTION */\n  ;\n}\n\nfunction icuCreateOpCode(opCode, parentIdx, refIdx) {\n  ngDevMode && assertGreaterThanOrEqual(parentIdx, 0, 'Missing parent index');\n  ngDevMode && assertGreaterThan(refIdx, 0, 'Missing ref index');\n  return opCode | parentIdx << 17\n  /* SHIFT_PARENT */\n  | refIdx << 1\n  /* SHIFT_REF */\n  ;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Keep track of which input bindings in `ɵɵi18nExp` have changed.\n *\n * This is used to efficiently update expressions in i18n only when the corresponding input has\n * changed.\n *\n * 1) Each bit represents which of the `ɵɵi18nExp` has changed.\n * 2) There are 32 bits allowed in JS.\n * 3) Bit 32 is special as it is shared for all changes past 32. (In other words if you have more\n * than 32 `ɵɵi18nExp` then all changes past 32nd `ɵɵi18nExp` will be mapped to same bit. This means\n * that we may end up changing more than we need to. But i18n expressions with 32 bindings is rare\n * so in practice it should not be an issue.)\n */\n\n\nvar changeMask = 0;\n/**\n * Keeps track of which bit needs to be updated in `changeMask`\n *\n * This value gets incremented on every call to `ɵɵi18nExp`\n */\n\nvar changeMaskCounter = 0;\n/**\n * Keep track of which input bindings in `ɵɵi18nExp` have changed.\n *\n * `setMaskBit` gets invoked by each call to `ɵɵi18nExp`.\n *\n * @param hasChange did `ɵɵi18nExp` detect a change.\n */\n\nfunction setMaskBit(hasChange) {\n  if (hasChange) {\n    changeMask = changeMask | 1 << Math.min(changeMaskCounter, 31);\n  }\n\n  changeMaskCounter++;\n}\n\nfunction applyI18n(tView, lView, index) {\n  if (changeMaskCounter > 0) {\n    ngDevMode && assertDefined(tView, \"tView should be defined\");\n    var tI18n = tView.data[index]; // When `index` points to an `ɵɵi18nAttributes` then we have an array otherwise `TI18n`\n\n    var updateOpCodes = Array.isArray(tI18n) ? tI18n : tI18n.update;\n    var bindingsStartIndex = getBindingIndex() - changeMaskCounter - 1;\n    applyUpdateOpCodes(tView, lView, updateOpCodes, bindingsStartIndex, changeMask);\n  } // Reset changeMask & maskBit to default for the next update cycle\n\n\n  changeMask = 0;\n  changeMaskCounter = 0;\n}\n/**\n * Apply `I18nCreateOpCodes` op-codes as stored in `TI18n.create`.\n *\n * Creates text (and comment) nodes which are internationalized.\n *\n * @param lView Current lView\n * @param createOpCodes Set of op-codes to apply\n * @param parentRNode Parent node (so that direct children can be added eagerly) or `null` if it is\n *     a root node.\n * @param insertInFrontOf DOM node that should be used as an anchor.\n */\n\n\nfunction applyCreateOpCodes(lView, createOpCodes, parentRNode, insertInFrontOf) {\n  var renderer = lView[RENDERER];\n\n  for (var i = 0; i < createOpCodes.length; i++) {\n    var opCode = createOpCodes[i++];\n    var text = createOpCodes[i];\n    var isComment = (opCode & I18nCreateOpCode.COMMENT) === I18nCreateOpCode.COMMENT;\n    var appendNow = (opCode & I18nCreateOpCode.APPEND_EAGERLY) === I18nCreateOpCode.APPEND_EAGERLY;\n    var index = opCode >>> I18nCreateOpCode.SHIFT;\n    var rNode = lView[index];\n\n    if (rNode === null) {\n      // We only create new DOM nodes if they don't already exist: If ICU switches case back to a\n      // case which was already instantiated, no need to create new DOM nodes.\n      rNode = lView[index] = isComment ? renderer.createComment(text) : createTextNode(renderer, text);\n    }\n\n    if (appendNow && parentRNode !== null) {\n      nativeInsertBefore(renderer, parentRNode, rNode, insertInFrontOf, false);\n    }\n  }\n}\n/**\n * Apply `I18nMutateOpCodes` OpCodes.\n *\n * @param tView Current `TView`\n * @param mutableOpCodes Mutable OpCodes to process\n * @param lView Current `LView`\n * @param anchorRNode place where the i18n node should be inserted.\n */\n\n\nfunction applyMutableOpCodes(tView, mutableOpCodes, lView, anchorRNode) {\n  ngDevMode && assertDomNode(anchorRNode);\n  var renderer = lView[RENDERER]; // `rootIdx` represents the node into which all inserts happen.\n\n  var rootIdx = null; // `rootRNode` represents the real node into which we insert. This can be different from\n  // `lView[rootIdx]` if we have projection.\n  //  - null we don't have a parent (as can be the case in when we are inserting into a root of\n  //    LView which has no parent.)\n  //  - `RElement` The element representing the root after taking projection into account.\n\n  var rootRNode;\n\n  for (var i = 0; i < mutableOpCodes.length; i++) {\n    var opCode = mutableOpCodes[i];\n\n    if (typeof opCode == 'string') {\n      var textNodeIndex = mutableOpCodes[++i];\n\n      if (lView[textNodeIndex] === null) {\n        ngDevMode && ngDevMode.rendererCreateTextNode++;\n        ngDevMode && assertIndexInRange(lView, textNodeIndex);\n        lView[textNodeIndex] = createTextNode(renderer, opCode);\n      }\n    } else if (typeof opCode == 'number') {\n      switch (opCode & 1\n      /* MASK_INSTRUCTION */\n      ) {\n        case 0\n        /* AppendChild */\n        :\n          var parentIdx = getParentFromIcuCreateOpCode(opCode);\n\n          if (rootIdx === null) {\n            // The first operation should save the `rootIdx` because the first operation\n            // must insert into the root. (Only subsequent operations can insert into a dynamic\n            // parent)\n            rootIdx = parentIdx;\n            rootRNode = nativeParentNode(renderer, anchorRNode);\n          }\n\n          var insertInFrontOf = void 0;\n          var parentRNode = void 0;\n\n          if (parentIdx === rootIdx) {\n            insertInFrontOf = anchorRNode;\n            parentRNode = rootRNode;\n          } else {\n            insertInFrontOf = null;\n            parentRNode = unwrapRNode(lView[parentIdx]);\n          } // FIXME(misko): Refactor with `processI18nText`\n\n\n          if (parentRNode !== null) {\n            // This can happen if the `LView` we are adding to is not attached to a parent `LView`.\n            // In such a case there is no \"root\" we can attach to. This is fine, as we still need to\n            // create the elements. When the `LView` gets later added to a parent these \"root\" nodes\n            // get picked up and added.\n            ngDevMode && assertDomNode(parentRNode);\n            var refIdx = getRefFromIcuCreateOpCode(opCode);\n            ngDevMode && assertGreaterThan(refIdx, HEADER_OFFSET, 'Missing ref'); // `unwrapRNode` is not needed here as all of these point to RNodes as part of the i18n\n            // which can't have components.\n\n            var child = lView[refIdx];\n            ngDevMode && assertDomNode(child);\n            nativeInsertBefore(renderer, parentRNode, child, insertInFrontOf, false);\n            var tIcu = getTIcu(tView, refIdx);\n\n            if (tIcu !== null && _typeof(tIcu) === 'object') {\n              // If we just added a comment node which has ICU then that ICU may have already been\n              // rendered and therefore we need to re-add it here.\n              ngDevMode && assertTIcu(tIcu);\n              var caseIndex = getCurrentICUCaseIndex(tIcu, lView);\n\n              if (caseIndex !== null) {\n                applyMutableOpCodes(tView, tIcu.create[caseIndex], lView, lView[tIcu.anchorIdx]);\n              }\n            }\n          }\n\n          break;\n\n        case 1\n        /* Attr */\n        :\n          var elementNodeIndex = opCode >>> 1\n          /* SHIFT_REF */\n          ;\n          var attrName = mutableOpCodes[++i];\n          var attrValue = mutableOpCodes[++i]; // This code is used for ICU expressions only, since we don't support\n          // directives/components in ICUs, we don't need to worry about inputs here\n\n          setElementAttribute(renderer, getNativeByIndex(elementNodeIndex, lView), null, null, attrName, attrValue, null);\n          break;\n\n        default:\n          throw new Error(\"Unable to determine the type of mutate operation for \\\"\".concat(opCode, \"\\\"\"));\n      }\n    } else {\n      switch (opCode) {\n        case ICU_MARKER:\n          var commentValue = mutableOpCodes[++i];\n          var commentNodeIndex = mutableOpCodes[++i];\n\n          if (lView[commentNodeIndex] === null) {\n            ngDevMode && assertEqual(_typeof(commentValue), 'string', \"Expected \\\"\".concat(commentValue, \"\\\" to be a comment node value\"));\n            ngDevMode && ngDevMode.rendererCreateComment++;\n            ngDevMode && assertIndexInExpandoRange(lView, commentNodeIndex);\n            var commentRNode = lView[commentNodeIndex] = createCommentNode(renderer, commentValue); // FIXME(misko): Attaching patch data is only needed for the root (Also add tests)\n\n            attachPatchData(commentRNode, lView);\n          }\n\n          break;\n\n        case ELEMENT_MARKER:\n          var tagName = mutableOpCodes[++i];\n          var _elementNodeIndex = mutableOpCodes[++i];\n\n          if (lView[_elementNodeIndex] === null) {\n            ngDevMode && assertEqual(_typeof(tagName), 'string', \"Expected \\\"\".concat(tagName, \"\\\" to be an element node tag name\"));\n            ngDevMode && ngDevMode.rendererCreateElement++;\n            ngDevMode && assertIndexInExpandoRange(lView, _elementNodeIndex);\n            var elementRNode = lView[_elementNodeIndex] = createElementNode(renderer, tagName, null); // FIXME(misko): Attaching patch data is only needed for the root (Also add tests)\n\n            attachPatchData(elementRNode, lView);\n          }\n\n          break;\n\n        default:\n          ngDevMode && throwError(\"Unable to determine the type of mutate operation for \\\"\".concat(opCode, \"\\\"\"));\n      }\n    }\n  }\n}\n/**\n * Apply `I18nUpdateOpCodes` OpCodes\n *\n * @param tView Current `TView`\n * @param lView Current `LView`\n * @param updateOpCodes OpCodes to process\n * @param bindingsStartIndex Location of the first `ɵɵi18nApply`\n * @param changeMask Each bit corresponds to a `ɵɵi18nExp` (Counting backwards from\n *     `bindingsStartIndex`)\n */\n\n\nfunction applyUpdateOpCodes(tView, lView, updateOpCodes, bindingsStartIndex, changeMask) {\n  for (var i = 0; i < updateOpCodes.length; i++) {\n    // bit code to check if we should apply the next update\n    var checkBit = updateOpCodes[i]; // Number of opCodes to skip until next set of update codes\n\n    var skipCodes = updateOpCodes[++i];\n\n    if (checkBit & changeMask) {\n      // The value has been updated since last checked\n      var value = '';\n\n      for (var j = i + 1; j <= i + skipCodes; j++) {\n        var opCode = updateOpCodes[j];\n\n        if (typeof opCode == 'string') {\n          value += opCode;\n        } else if (typeof opCode == 'number') {\n          if (opCode < 0) {\n            // Negative opCode represent `i18nExp` values offset.\n            value += renderStringify(lView[bindingsStartIndex - opCode]);\n          } else {\n            var nodeIndex = opCode >>> 2\n            /* SHIFT_REF */\n            ;\n\n            switch (opCode & 3\n            /* MASK_OPCODE */\n            ) {\n              case 1\n              /* Attr */\n              :\n                var propName = updateOpCodes[++j];\n                var sanitizeFn = updateOpCodes[++j];\n                var tNodeOrTagName = tView.data[nodeIndex];\n                ngDevMode && assertDefined(tNodeOrTagName, 'Experting TNode or string');\n\n                if (typeof tNodeOrTagName === 'string') {\n                  // IF we don't have a `TNode`, then we are an element in ICU (as ICU content does\n                  // not have TNode), in which case we know that there are no directives, and hence\n                  // we use attribute setting.\n                  setElementAttribute(lView[RENDERER], lView[nodeIndex], null, tNodeOrTagName, propName, value, sanitizeFn);\n                } else {\n                  elementPropertyInternal(tView, tNodeOrTagName, lView, propName, value, lView[RENDERER], sanitizeFn, false);\n                }\n\n                break;\n\n              case 0\n              /* Text */\n              :\n                var rText = lView[nodeIndex];\n                rText !== null && updateTextNode(lView[RENDERER], rText, value);\n                break;\n\n              case 2\n              /* IcuSwitch */\n              :\n                applyIcuSwitchCase(tView, getTIcu(tView, nodeIndex), lView, value);\n                break;\n\n              case 3\n              /* IcuUpdate */\n              :\n                applyIcuUpdateCase(tView, getTIcu(tView, nodeIndex), bindingsStartIndex, lView);\n                break;\n            }\n          }\n        }\n      }\n    } else {\n      var _opCode = updateOpCodes[i + 1];\n\n      if (_opCode > 0 && (_opCode & 3\n      /* MASK_OPCODE */\n      ) === 3\n      /* IcuUpdate */\n      ) {\n        // Special case for the `icuUpdateCase`. It could be that the mask did not match, but\n        // we still need to execute `icuUpdateCase` because the case has changed recently due to\n        // previous `icuSwitchCase` instruction. (`icuSwitchCase` and `icuUpdateCase` always come in\n        // pairs.)\n        var _nodeIndex = _opCode >>> 2\n        /* SHIFT_REF */\n        ;\n\n        var tIcu = getTIcu(tView, _nodeIndex);\n        var currentIndex = lView[tIcu.currentCaseLViewIndex];\n\n        if (currentIndex < 0) {\n          applyIcuUpdateCase(tView, tIcu, bindingsStartIndex, lView);\n        }\n      }\n    }\n\n    i += skipCodes;\n  }\n}\n/**\n * Apply OpCodes associated with updating an existing ICU.\n *\n * @param tView Current `TView`\n * @param tIcu Current `TIcu`\n * @param bindingsStartIndex Location of the first `ɵɵi18nApply`\n * @param lView Current `LView`\n */\n\n\nfunction applyIcuUpdateCase(tView, tIcu, bindingsStartIndex, lView) {\n  ngDevMode && assertIndexInRange(lView, tIcu.currentCaseLViewIndex);\n  var activeCaseIndex = lView[tIcu.currentCaseLViewIndex];\n\n  if (activeCaseIndex !== null) {\n    var mask = changeMask;\n\n    if (activeCaseIndex < 0) {\n      // Clear the flag.\n      // Negative number means that the ICU was freshly created and we need to force the update.\n      activeCaseIndex = lView[tIcu.currentCaseLViewIndex] = ~activeCaseIndex; // -1 is same as all bits on, which simulates creation since it marks all bits dirty\n\n      mask = -1;\n    }\n\n    applyUpdateOpCodes(tView, lView, tIcu.update[activeCaseIndex], bindingsStartIndex, mask);\n  }\n}\n/**\n * Apply OpCodes associated with switching a case on ICU.\n *\n * This involves tearing down existing case and than building up a new case.\n *\n * @param tView Current `TView`\n * @param tIcu Current `TIcu`\n * @param lView Current `LView`\n * @param value Value of the case to update to.\n */\n\n\nfunction applyIcuSwitchCase(tView, tIcu, lView, value) {\n  // Rebuild a new case for this ICU\n  var caseIndex = getCaseIndex(tIcu, value);\n  var activeCaseIndex = getCurrentICUCaseIndex(tIcu, lView);\n\n  if (activeCaseIndex !== caseIndex) {\n    applyIcuSwitchCaseRemove(tView, tIcu, lView);\n    lView[tIcu.currentCaseLViewIndex] = caseIndex === null ? null : ~caseIndex;\n\n    if (caseIndex !== null) {\n      // Add the nodes for the new case\n      var anchorRNode = lView[tIcu.anchorIdx];\n\n      if (anchorRNode) {\n        ngDevMode && assertDomNode(anchorRNode);\n        applyMutableOpCodes(tView, tIcu.create[caseIndex], lView, anchorRNode);\n      }\n    }\n  }\n}\n/**\n * Apply OpCodes associated with tearing ICU case.\n *\n * This involves tearing down existing case and than building up a new case.\n *\n * @param tView Current `TView`\n * @param tIcu Current `TIcu`\n * @param lView Current `LView`\n */\n\n\nfunction applyIcuSwitchCaseRemove(tView, tIcu, lView) {\n  var activeCaseIndex = getCurrentICUCaseIndex(tIcu, lView);\n\n  if (activeCaseIndex !== null) {\n    var removeCodes = tIcu.remove[activeCaseIndex];\n\n    for (var i = 0; i < removeCodes.length; i++) {\n      var nodeOrIcuIndex = removeCodes[i];\n\n      if (nodeOrIcuIndex > 0) {\n        // Positive numbers are `RNode`s.\n        var rNode = getNativeByIndex(nodeOrIcuIndex, lView);\n        rNode !== null && nativeRemoveNode(lView[RENDERER], rNode);\n      } else {\n        // Negative numbers are ICUs\n        applyIcuSwitchCaseRemove(tView, getTIcu(tView, ~nodeOrIcuIndex), lView);\n      }\n    }\n  }\n}\n/**\n * Returns the index of the current case of an ICU expression depending on the main binding value\n *\n * @param icuExpression\n * @param bindingValue The value of the main binding used by this ICU expression\n */\n\n\nfunction getCaseIndex(icuExpression, bindingValue) {\n  var index = icuExpression.cases.indexOf(bindingValue);\n\n  if (index === -1) {\n    switch (icuExpression.type) {\n      case 1\n      /* plural */\n      :\n        {\n          var resolvedCase = getPluralCase(bindingValue, getLocaleId());\n          index = icuExpression.cases.indexOf(resolvedCase);\n\n          if (index === -1 && resolvedCase !== 'other') {\n            index = icuExpression.cases.indexOf('other');\n          }\n\n          break;\n        }\n\n      case 0\n      /* select */\n      :\n        {\n          index = icuExpression.cases.indexOf('other');\n          break;\n        }\n    }\n  }\n\n  return index === -1 ? null : index;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction loadIcuContainerVisitor() {\n  var _stack = [];\n\n  var _index = -1;\n\n  var _lView;\n\n  var _removes;\n  /**\n   * Retrieves a set of root nodes from `TIcu.remove`. Used by `TNodeType.ICUContainer`\n   * to determine which root belong to the ICU.\n   *\n   * Example of usage.\n   * ```\n   * const nextRNode = icuContainerIteratorStart(tIcuContainerNode, lView);\n   * let rNode: RNode|null;\n   * while(rNode = nextRNode()) {\n   *   console.log(rNode);\n   * }\n   * ```\n   *\n   * @param tIcuContainerNode Current `TIcuContainerNode`\n   * @param lView `LView` where the `RNode`s should be looked up.\n   */\n\n\n  function icuContainerIteratorStart(tIcuContainerNode, lView) {\n    _lView = lView;\n\n    while (_stack.length) {\n      _stack.pop();\n    }\n\n    ngDevMode && assertTNodeForLView(tIcuContainerNode, lView);\n    enterIcu(tIcuContainerNode.value, lView);\n    return icuContainerIteratorNext;\n  }\n\n  function enterIcu(tIcu, lView) {\n    _index = 0;\n    var currentCase = getCurrentICUCaseIndex(tIcu, lView);\n\n    if (currentCase !== null) {\n      ngDevMode && assertNumberInRange(currentCase, 0, tIcu.cases.length - 1);\n      _removes = tIcu.remove[currentCase];\n    } else {\n      _removes = EMPTY_ARRAY;\n    }\n  }\n\n  function icuContainerIteratorNext() {\n    if (_index < _removes.length) {\n      var removeOpCode = _removes[_index++];\n      ngDevMode && assertNumber(removeOpCode, 'Expecting OpCode number');\n\n      if (removeOpCode > 0) {\n        var rNode = _lView[removeOpCode];\n        ngDevMode && assertDomNode(rNode);\n        return rNode;\n      } else {\n        _stack.push(_index, _removes); // ICUs are represented by negative indices\n\n\n        var tIcuIndex = ~removeOpCode;\n        var tIcu = _lView[TVIEW].data[tIcuIndex];\n        ngDevMode && assertTIcu(tIcu);\n        enterIcu(tIcu, _lView);\n        return icuContainerIteratorNext();\n      }\n    } else {\n      if (_stack.length === 0) {\n        return null;\n      } else {\n        _removes = _stack.pop();\n        _index = _stack.pop();\n        return icuContainerIteratorNext();\n      }\n    }\n  }\n\n  return icuContainerIteratorStart;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Converts `I18nCreateOpCodes` array into a human readable format.\n *\n * This function is attached to the `I18nCreateOpCodes.debug` property if `ngDevMode` is enabled.\n * This function provides a human readable view of the opcodes. This is useful when debugging the\n * application as well as writing more readable tests.\n *\n * @param this `I18nCreateOpCodes` if attached as a method.\n * @param opcodes `I18nCreateOpCodes` if invoked as a function.\n */\n\n\nfunction i18nCreateOpCodesToString(opcodes) {\n  var createOpCodes = opcodes || (Array.isArray(this) ? this : []);\n  var lines = [];\n\n  for (var i = 0; i < createOpCodes.length; i++) {\n    var opCode = createOpCodes[i++];\n    var text = createOpCodes[i];\n    var isComment = (opCode & I18nCreateOpCode.COMMENT) === I18nCreateOpCode.COMMENT;\n    var appendNow = (opCode & I18nCreateOpCode.APPEND_EAGERLY) === I18nCreateOpCode.APPEND_EAGERLY;\n    var index = opCode >>> I18nCreateOpCode.SHIFT;\n    lines.push(\"lView[\".concat(index, \"] = document.\").concat(isComment ? 'createComment' : 'createText', \"(\").concat(JSON.stringify(text), \");\"));\n\n    if (appendNow) {\n      lines.push(\"parent.appendChild(lView[\".concat(index, \"]);\"));\n    }\n  }\n\n  return lines;\n}\n/**\n * Converts `I18nUpdateOpCodes` array into a human readable format.\n *\n * This function is attached to the `I18nUpdateOpCodes.debug` property if `ngDevMode` is enabled.\n * This function provides a human readable view of the opcodes. This is useful when debugging the\n * application as well as writing more readable tests.\n *\n * @param this `I18nUpdateOpCodes` if attached as a method.\n * @param opcodes `I18nUpdateOpCodes` if invoked as a function.\n */\n\n\nfunction i18nUpdateOpCodesToString(opcodes) {\n  var parser = new OpCodeParser(opcodes || (Array.isArray(this) ? this : []));\n  var lines = [];\n\n  function consumeOpCode(value) {\n    var ref = value >>> 2\n    /* SHIFT_REF */\n    ;\n    var opCode = value & 3\n    /* MASK_OPCODE */\n    ;\n\n    switch (opCode) {\n      case 0\n      /* Text */\n      :\n        return \"(lView[\".concat(ref, \"] as Text).textContent = $$$\");\n\n      case 1\n      /* Attr */\n      :\n        var attrName = parser.consumeString();\n        var sanitizationFn = parser.consumeFunction();\n\n        var _value = sanitizationFn ? \"(\".concat(sanitizationFn, \")($$$)\") : '$$$';\n\n        return \"(lView[\".concat(ref, \"] as Element).setAttribute('\").concat(attrName, \"', \").concat(_value, \")\");\n\n      case 2\n      /* IcuSwitch */\n      :\n        return \"icuSwitchCase(\".concat(ref, \", $$$)\");\n\n      case 3\n      /* IcuUpdate */\n      :\n        return \"icuUpdateCase(\".concat(ref, \")\");\n    }\n\n    throw new Error('unexpected OpCode');\n  }\n\n  while (parser.hasMore()) {\n    var mask = parser.consumeNumber();\n    var size = parser.consumeNumber();\n    var end = parser.i + size;\n    var statements = [];\n    var statement = '';\n\n    while (parser.i < end) {\n      var value = parser.consumeNumberOrString();\n\n      if (typeof value === 'string') {\n        statement += value;\n      } else if (value < 0) {\n        // Negative numbers are ref indexes\n        // Here `i` refers to current binding index. It is to signify that the value is relative,\n        // rather than absolute.\n        statement += '${lView[i' + value + ']}';\n      } else {\n        // Positive numbers are operations.\n        var opCodeText = consumeOpCode(value);\n        statements.push(opCodeText.replace('$$$', '`' + statement + '`') + ';');\n        statement = '';\n      }\n    }\n\n    lines.push(\"if (mask & 0b\".concat(mask.toString(2), \") { \").concat(statements.join(' '), \" }\"));\n  }\n\n  return lines;\n}\n/**\n * Converts `I18nCreateOpCodes` array into a human readable format.\n *\n * This function is attached to the `I18nCreateOpCodes.debug` if `ngDevMode` is enabled. This\n * function provides a human readable view of the opcodes. This is useful when debugging the\n * application as well as writing more readable tests.\n *\n * @param this `I18nCreateOpCodes` if attached as a method.\n * @param opcodes `I18nCreateOpCodes` if invoked as a function.\n */\n\n\nfunction icuCreateOpCodesToString(opcodes) {\n  var parser = new OpCodeParser(opcodes || (Array.isArray(this) ? this : []));\n  var lines = [];\n\n  function consumeOpCode(opCode) {\n    var parent = getParentFromIcuCreateOpCode(opCode);\n    var ref = getRefFromIcuCreateOpCode(opCode);\n\n    switch (getInstructionFromIcuCreateOpCode(opCode)) {\n      case 0\n      /* AppendChild */\n      :\n        return \"(lView[\".concat(parent, \"] as Element).appendChild(lView[\").concat(lastRef, \"])\");\n\n      case 1\n      /* Attr */\n      :\n        return \"(lView[\".concat(ref, \"] as Element).setAttribute(\\\"\").concat(parser.consumeString(), \"\\\", \\\"\").concat(parser.consumeString(), \"\\\")\");\n    }\n\n    throw new Error('Unexpected OpCode: ' + getInstructionFromIcuCreateOpCode(opCode));\n  }\n\n  var lastRef = -1;\n\n  while (parser.hasMore()) {\n    var value = parser.consumeNumberStringOrMarker();\n\n    if (value === ICU_MARKER) {\n      var text = parser.consumeString();\n      lastRef = parser.consumeNumber();\n      lines.push(\"lView[\".concat(lastRef, \"] = document.createComment(\\\"\").concat(text, \"\\\")\"));\n    } else if (value === ELEMENT_MARKER) {\n      var _text = parser.consumeString();\n\n      lastRef = parser.consumeNumber();\n      lines.push(\"lView[\".concat(lastRef, \"] = document.createElement(\\\"\").concat(_text, \"\\\")\"));\n    } else if (typeof value === 'string') {\n      lastRef = parser.consumeNumber();\n      lines.push(\"lView[\".concat(lastRef, \"] = document.createTextNode(\\\"\").concat(value, \"\\\")\"));\n    } else if (typeof value === 'number') {\n      var line = consumeOpCode(value);\n      line && lines.push(line);\n    } else {\n      throw new Error('Unexpected value');\n    }\n  }\n\n  return lines;\n}\n/**\n * Converts `I18nRemoveOpCodes` array into a human readable format.\n *\n * This function is attached to the `I18nRemoveOpCodes.debug` if `ngDevMode` is enabled. This\n * function provides a human readable view of the opcodes. This is useful when debugging the\n * application as well as writing more readable tests.\n *\n * @param this `I18nRemoveOpCodes` if attached as a method.\n * @param opcodes `I18nRemoveOpCodes` if invoked as a function.\n */\n\n\nfunction i18nRemoveOpCodesToString(opcodes) {\n  var removeCodes = opcodes || (Array.isArray(this) ? this : []);\n  var lines = [];\n\n  for (var i = 0; i < removeCodes.length; i++) {\n    var nodeOrIcuIndex = removeCodes[i];\n\n    if (nodeOrIcuIndex > 0) {\n      // Positive numbers are `RNode`s.\n      lines.push(\"remove(lView[\".concat(nodeOrIcuIndex, \"])\"));\n    } else {\n      // Negative numbers are ICUs\n      lines.push(\"removeNestedICU(\".concat(~nodeOrIcuIndex, \")\"));\n    }\n  }\n\n  return lines;\n}\n\nvar OpCodeParser = /*#__PURE__*/function () {\n  function OpCodeParser(codes) {\n    _classCallCheck(this, OpCodeParser);\n\n    this.i = 0;\n    this.codes = codes;\n  }\n\n  _createClass2(OpCodeParser, [{\n    key: \"hasMore\",\n    value: function hasMore() {\n      return this.i < this.codes.length;\n    }\n  }, {\n    key: \"consumeNumber\",\n    value: function consumeNumber() {\n      var value = this.codes[this.i++];\n      assertNumber(value, 'expecting number in OpCode');\n      return value;\n    }\n  }, {\n    key: \"consumeString\",\n    value: function consumeString() {\n      var value = this.codes[this.i++];\n      assertString(value, 'expecting string in OpCode');\n      return value;\n    }\n  }, {\n    key: \"consumeFunction\",\n    value: function consumeFunction() {\n      var value = this.codes[this.i++];\n\n      if (value === null || typeof value === 'function') {\n        return value;\n      }\n\n      throw new Error('expecting function in OpCode');\n    }\n  }, {\n    key: \"consumeNumberOrString\",\n    value: function consumeNumberOrString() {\n      var value = this.codes[this.i++];\n\n      if (typeof value === 'string') {\n        return value;\n      }\n\n      assertNumber(value, 'expecting number or string in OpCode');\n      return value;\n    }\n  }, {\n    key: \"consumeNumberStringOrMarker\",\n    value: function consumeNumberStringOrMarker() {\n      var value = this.codes[this.i++];\n\n      if (typeof value === 'string' || typeof value === 'number' || value == ICU_MARKER || value == ELEMENT_MARKER) {\n        return value;\n      }\n\n      assertNumber(value, 'expecting number, string, ICU_MARKER or ELEMENT_MARKER in OpCode');\n      return value;\n    }\n  }]);\n\n  return OpCodeParser;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar BINDING_REGEXP = /�(\\d+):?\\d*�/gi;\nvar ICU_REGEXP = /({\\s*�\\d+:?\\d*�\\s*,\\s*\\S{6}\\s*,[\\s\\S]*})/gi;\nvar NESTED_ICU = /�(\\d+)�/;\nvar ICU_BLOCK_REGEXP = /^\\s*(�\\d+:?\\d*�)\\s*,\\s*(select|plural)\\s*,/;\nvar MARKER = \"\\uFFFD\";\nvar SUBTEMPLATE_REGEXP = /�\\/?\\*(\\d+:\\d+)�/gi;\nvar PH_REGEXP = /�(\\/?[#*]\\d+):?\\d*�/gi;\n/**\n * Angular Dart introduced &ngsp; as a placeholder for non-removable space, see:\n * https://github.com/dart-lang/angular/blob/0bb611387d29d65b5af7f9d2515ab571fd3fbee4/_tests/test/compiler/preserve_whitespace_test.dart#L25-L32\n * In Angular Dart &ngsp; is converted to the 0xE500 PUA (Private Use Areas) unicode character\n * and later on replaced by a space. We are re-implementing the same idea here, since translations\n * might contain this special character.\n */\n\nvar NGSP_UNICODE_REGEXP = /\\uE500/g;\n\nfunction replaceNgsp(value) {\n  return value.replace(NGSP_UNICODE_REGEXP, ' ');\n}\n/**\n * Create dynamic nodes from i18n translation block.\n *\n * - Text nodes are created synchronously\n * - TNodes are linked into tree lazily\n *\n * @param tView Current `TView`\n * @parentTNodeIndex index to the parent TNode of this i18n block\n * @param lView Current `LView`\n * @param index Index of `ɵɵi18nStart` instruction.\n * @param message Message to translate.\n * @param subTemplateIndex Index into the sub template of message translation. (ie in case of\n *     `ngIf`) (-1 otherwise)\n */\n\n\nfunction i18nStartFirstCreatePass(tView, parentTNodeIndex, lView, index, message, subTemplateIndex) {\n  var rootTNode = getCurrentParentTNode();\n  var createOpCodes = [];\n  var updateOpCodes = [];\n  var existingTNodeStack = [[]];\n\n  if (ngDevMode) {\n    attachDebugGetter(createOpCodes, i18nCreateOpCodesToString);\n    attachDebugGetter(updateOpCodes, i18nUpdateOpCodesToString);\n  }\n\n  message = getTranslationForTemplate(message, subTemplateIndex);\n  var msgParts = replaceNgsp(message).split(PH_REGEXP);\n\n  for (var i = 0; i < msgParts.length; i++) {\n    var value = msgParts[i];\n\n    if ((i & 1) === 0) {\n      // Even indexes are text (including bindings & ICU expressions)\n      var parts = i18nParseTextIntoPartsAndICU(value);\n\n      for (var j = 0; j < parts.length; j++) {\n        var part = parts[j];\n\n        if ((j & 1) === 0) {\n          // `j` is odd therefore `part` is string\n          var text = part;\n          ngDevMode && assertString(text, 'Parsed ICU part should be string');\n\n          if (text !== '') {\n            i18nStartFirstCreatePassProcessTextNode(tView, rootTNode, existingTNodeStack[0], createOpCodes, updateOpCodes, lView, text);\n          }\n        } else {\n          // `j` is Even therefor `part` is an `ICUExpression`\n          var icuExpression = part; // Verify that ICU expression has the right shape. Translations might contain invalid\n          // constructions (while original messages were correct), so ICU parsing at runtime may\n          // not succeed (thus `icuExpression` remains a string).\n          // Note: we intentionally retain the error here by not using `ngDevMode`, because\n          // the value can change based on the locale and users aren't guaranteed to hit\n          // an invalid string while they're developing.\n\n          if (_typeof(icuExpression) !== 'object') {\n            throw new Error(\"Unable to parse ICU expression in \\\"\".concat(message, \"\\\" message.\"));\n          }\n\n          var icuContainerTNode = createTNodeAndAddOpCode(tView, rootTNode, existingTNodeStack[0], lView, createOpCodes, ngDevMode ? \"ICU \".concat(index, \":\").concat(icuExpression.mainBinding) : '', true);\n          var icuNodeIndex = icuContainerTNode.index;\n          ngDevMode && assertGreaterThanOrEqual(icuNodeIndex, HEADER_OFFSET, 'Index must be in absolute LView offset');\n          icuStart(tView, lView, updateOpCodes, parentTNodeIndex, icuExpression, icuNodeIndex);\n        }\n      }\n    } else {\n      // Odd indexes are placeholders (elements and sub-templates)\n      // At this point value is something like: '/#1:2' (originally coming from '�/#1:2�')\n      var isClosing = value.charCodeAt(0) === 47\n      /* SLASH */\n      ;\n      var type = value.charCodeAt(isClosing ? 1 : 0);\n      ngDevMode && assertOneOf(type, 42\n      /* STAR */\n      , 35\n      /* HASH */\n      );\n\n      var _index2 = HEADER_OFFSET + Number.parseInt(value.substring(isClosing ? 2 : 1));\n\n      if (isClosing) {\n        existingTNodeStack.shift();\n        setCurrentTNode(getCurrentParentTNode(), false);\n      } else {\n        var tNode = createTNodePlaceholder(tView, existingTNodeStack[0], _index2);\n        existingTNodeStack.unshift([]);\n        setCurrentTNode(tNode, true);\n      }\n    }\n  }\n\n  tView.data[index] = {\n    create: createOpCodes,\n    update: updateOpCodes\n  };\n}\n/**\n * Allocate space in i18n Range add create OpCode instruction to crete a text or comment node.\n *\n * @param tView Current `TView` needed to allocate space in i18n range.\n * @param rootTNode Root `TNode` of the i18n block. This node determines if the new TNode will be\n *     added as part of the `i18nStart` instruction or as part of the `TNode.insertBeforeIndex`.\n * @param existingTNodes internal state for `addTNodeAndUpdateInsertBeforeIndex`.\n * @param lView Current `LView` needed to allocate space in i18n range.\n * @param createOpCodes Array storing `I18nCreateOpCodes` where new opCodes will be added.\n * @param text Text to be added when the `Text` or `Comment` node will be created.\n * @param isICU true if a `Comment` node for ICU (instead of `Text`) node should be created.\n */\n\n\nfunction createTNodeAndAddOpCode(tView, rootTNode, existingTNodes, lView, createOpCodes, text, isICU) {\n  var i18nNodeIdx = allocExpando(tView, lView, 1, null);\n  var opCode = i18nNodeIdx << I18nCreateOpCode.SHIFT;\n  var parentTNode = getCurrentParentTNode();\n\n  if (rootTNode === parentTNode) {\n    // FIXME(misko): A null `parentTNode` should represent when we fall of the `LView` boundary.\n    // (there is no parent), but in some circumstances (because we are inconsistent about how we set\n    // `previousOrParentTNode`) it could point to `rootTNode` So this is a work around.\n    parentTNode = null;\n  }\n\n  if (parentTNode === null) {\n    // If we don't have a parent that means that we can eagerly add nodes.\n    // If we have a parent than these nodes can't be added now (as the parent has not been created\n    // yet) and instead the `parentTNode` is responsible for adding it. See\n    // `TNode.insertBeforeIndex`\n    opCode |= I18nCreateOpCode.APPEND_EAGERLY;\n  }\n\n  if (isICU) {\n    opCode |= I18nCreateOpCode.COMMENT;\n    ensureIcuContainerVisitorLoaded(loadIcuContainerVisitor);\n  }\n\n  createOpCodes.push(opCode, text === null ? '' : text); // We store `{{?}}` so that when looking at debug `TNodeType.template` we can see where the\n  // bindings are.\n\n  var tNode = createTNodeAtIndex(tView, i18nNodeIdx, isICU ? 32\n  /* Icu */\n  : 1\n  /* Text */\n  , text === null ? ngDevMode ? '{{?}}' : '' : text, null);\n  addTNodeAndUpdateInsertBeforeIndex(existingTNodes, tNode);\n  var tNodeIdx = tNode.index;\n  setCurrentTNode(tNode, false\n  /* Text nodes are self closing */\n  );\n\n  if (parentTNode !== null && rootTNode !== parentTNode) {\n    // We are a child of deeper node (rather than a direct child of `i18nStart` instruction.)\n    // We have to make sure to add ourselves to the parent.\n    setTNodeInsertBeforeIndex(parentTNode, tNodeIdx);\n  }\n\n  return tNode;\n}\n/**\n * Processes text node in i18n block.\n *\n * Text nodes can have:\n * - Create instruction in `createOpCodes` for creating the text node.\n * - Allocate spec for text node in i18n range of `LView`\n * - If contains binding:\n *    - bindings => allocate space in i18n range of `LView` to store the binding value.\n *    - populate `updateOpCodes` with update instructions.\n *\n * @param tView Current `TView`\n * @param rootTNode Root `TNode` of the i18n block. This node determines if the new TNode will\n *     be added as part of the `i18nStart` instruction or as part of the\n *     `TNode.insertBeforeIndex`.\n * @param existingTNodes internal state for `addTNodeAndUpdateInsertBeforeIndex`.\n * @param createOpCodes Location where the creation OpCodes will be stored.\n * @param lView Current `LView`\n * @param text The translated text (which may contain binding)\n */\n\n\nfunction i18nStartFirstCreatePassProcessTextNode(tView, rootTNode, existingTNodes, createOpCodes, updateOpCodes, lView, text) {\n  var hasBinding = text.match(BINDING_REGEXP);\n  var tNode = createTNodeAndAddOpCode(tView, rootTNode, existingTNodes, lView, createOpCodes, hasBinding ? null : text, false);\n\n  if (hasBinding) {\n    generateBindingUpdateOpCodes(updateOpCodes, text, tNode.index);\n  }\n}\n/**\n * See `i18nAttributes` above.\n */\n\n\nfunction i18nAttributesFirstPass(tView, index, values) {\n  var previousElement = getCurrentTNode();\n  var previousElementIndex = previousElement.index;\n  var updateOpCodes = [];\n\n  if (ngDevMode) {\n    attachDebugGetter(updateOpCodes, i18nUpdateOpCodesToString);\n  }\n\n  if (tView.firstCreatePass && tView.data[index] === null) {\n    for (var i = 0; i < values.length; i += 2) {\n      var attrName = values[i];\n      var message = values[i + 1];\n\n      if (message !== '') {\n        // Check if attribute value contains an ICU and throw an error if that's the case.\n        // ICUs in element attributes are not supported.\n        // Note: we intentionally retain the error here by not using `ngDevMode`, because\n        // the `value` can change based on the locale and users aren't guaranteed to hit\n        // an invalid string while they're developing.\n        if (ICU_REGEXP.test(message)) {\n          throw new Error(\"ICU expressions are not supported in attributes. Message: \\\"\".concat(message, \"\\\".\"));\n        } // i18n attributes that hit this code path are guaranteed to have bindings, because\n        // the compiler treats static i18n attributes as regular attribute bindings.\n\n\n        generateBindingUpdateOpCodes(updateOpCodes, message, previousElementIndex, attrName);\n      }\n    }\n\n    tView.data[index] = updateOpCodes;\n  }\n}\n/**\n * Generate the OpCodes to update the bindings of a string.\n *\n * @param updateOpCodes Place where the update opcodes will be stored.\n * @param str The string containing the bindings.\n * @param destinationNode Index of the destination node which will receive the binding.\n * @param attrName Name of the attribute, if the string belongs to an attribute.\n * @param sanitizeFn Sanitization function used to sanitize the string after update, if necessary.\n */\n\n\nfunction generateBindingUpdateOpCodes(updateOpCodes, str, destinationNode, attrName) {\n  var sanitizeFn = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : null;\n  ngDevMode && assertGreaterThanOrEqual(destinationNode, HEADER_OFFSET, 'Index must be in absolute LView offset');\n  var maskIndex = updateOpCodes.length; // Location of mask\n\n  var sizeIndex = maskIndex + 1; // location of size for skipping\n\n  updateOpCodes.push(null, null); // Alloc space for mask and size\n\n  var startIndex = maskIndex + 2; // location of first allocation.\n\n  if (ngDevMode) {\n    attachDebugGetter(updateOpCodes, i18nUpdateOpCodesToString);\n  }\n\n  var textParts = str.split(BINDING_REGEXP);\n  var mask = 0;\n\n  for (var j = 0; j < textParts.length; j++) {\n    var textValue = textParts[j];\n\n    if (j & 1) {\n      // Odd indexes are bindings\n      var bindingIndex = parseInt(textValue, 10);\n      updateOpCodes.push(-1 - bindingIndex);\n      mask = mask | toMaskBit(bindingIndex);\n    } else if (textValue !== '') {\n      // Even indexes are text\n      updateOpCodes.push(textValue);\n    }\n  }\n\n  updateOpCodes.push(destinationNode << 2\n  /* SHIFT_REF */\n  | (attrName ? 1\n  /* Attr */\n  : 0\n  /* Text */\n  ));\n\n  if (attrName) {\n    updateOpCodes.push(attrName, sanitizeFn);\n  }\n\n  updateOpCodes[maskIndex] = mask;\n  updateOpCodes[sizeIndex] = updateOpCodes.length - startIndex;\n  return mask;\n}\n/**\n * Convert binding index to mask bit.\n *\n * Each index represents a single bit on the bit-mask. Because bit-mask only has 32 bits, we make\n * the 32nd bit share all masks for all bindings higher than 32. Since it is extremely rare to\n * have more than 32 bindings this will be hit very rarely. The downside of hitting this corner\n * case is that we will execute binding code more often than necessary. (penalty of performance)\n */\n\n\nfunction toMaskBit(bindingIndex) {\n  return 1 << Math.min(bindingIndex, 31);\n}\n\nfunction isRootTemplateMessage(subTemplateIndex) {\n  return subTemplateIndex === -1;\n}\n/**\n * Removes everything inside the sub-templates of a message.\n */\n\n\nfunction removeInnerTemplateTranslation(message) {\n  var match;\n  var res = '';\n  var index = 0;\n  var inTemplate = false;\n  var tagMatched;\n\n  while ((match = SUBTEMPLATE_REGEXP.exec(message)) !== null) {\n    if (!inTemplate) {\n      res += message.substring(index, match.index + match[0].length);\n      tagMatched = match[1];\n      inTemplate = true;\n    } else {\n      if (match[0] === \"\".concat(MARKER, \"/*\").concat(tagMatched).concat(MARKER)) {\n        index = match.index;\n        inTemplate = false;\n      }\n    }\n  }\n\n  ngDevMode && assertEqual(inTemplate, false, \"Tag mismatch: unable to find the end of the sub-template in the translation \\\"\".concat(message, \"\\\"\"));\n  res += message.substr(index);\n  return res;\n}\n/**\n * Extracts a part of a message and removes the rest.\n *\n * This method is used for extracting a part of the message associated with a template. A\n * translated message can span multiple templates.\n *\n * Example:\n * ```\n * <div i18n>Translate <span *ngIf>me</span>!</div>\n * ```\n *\n * @param message The message to crop\n * @param subTemplateIndex Index of the sub-template to extract. If undefined it returns the\n * external template and removes all sub-templates.\n */\n\n\nfunction getTranslationForTemplate(message, subTemplateIndex) {\n  if (isRootTemplateMessage(subTemplateIndex)) {\n    // We want the root template message, ignore all sub-templates\n    return removeInnerTemplateTranslation(message);\n  } else {\n    // We want a specific sub-template\n    var start = message.indexOf(\":\".concat(subTemplateIndex).concat(MARKER)) + 2 + subTemplateIndex.toString().length;\n    var end = message.search(new RegExp(\"\".concat(MARKER, \"\\\\/\\\\*\\\\d+:\").concat(subTemplateIndex).concat(MARKER)));\n    return removeInnerTemplateTranslation(message.substring(start, end));\n  }\n}\n/**\n * Generate the OpCodes for ICU expressions.\n *\n * @param icuExpression\n * @param index Index where the anchor is stored and an optional `TIcuContainerNode`\n *   - `lView[anchorIdx]` points to a `Comment` node representing the anchor for the ICU.\n *   - `tView.data[anchorIdx]` points to the `TIcuContainerNode` if ICU is root (`null` otherwise)\n */\n\n\nfunction icuStart(tView, lView, updateOpCodes, parentIdx, icuExpression, anchorIdx) {\n  ngDevMode && assertDefined(icuExpression, 'ICU expression must be defined');\n  var bindingMask = 0;\n  var tIcu = {\n    type: icuExpression.type,\n    currentCaseLViewIndex: allocExpando(tView, lView, 1, null),\n    anchorIdx: anchorIdx,\n    cases: [],\n    create: [],\n    remove: [],\n    update: []\n  };\n  addUpdateIcuSwitch(updateOpCodes, icuExpression, anchorIdx);\n  setTIcu(tView, anchorIdx, tIcu);\n  var values = icuExpression.values;\n\n  for (var i = 0; i < values.length; i++) {\n    // Each value is an array of strings & other ICU expressions\n    var valueArr = values[i];\n    var nestedIcus = [];\n\n    for (var j = 0; j < valueArr.length; j++) {\n      var value = valueArr[j];\n\n      if (typeof value !== 'string') {\n        // It is an nested ICU expression\n        var icuIndex = nestedIcus.push(value) - 1; // Replace nested ICU expression by a comment node\n\n        valueArr[j] = \"<!--\\uFFFD\".concat(icuIndex, \"\\uFFFD-->\");\n      }\n    }\n\n    bindingMask = parseIcuCase(tView, tIcu, lView, updateOpCodes, parentIdx, icuExpression.cases[i], valueArr.join(''), nestedIcus) | bindingMask;\n  }\n\n  if (bindingMask) {\n    addUpdateIcuUpdate(updateOpCodes, bindingMask, anchorIdx);\n  }\n}\n/**\n * Parses text containing an ICU expression and produces a JSON object for it.\n * Original code from closure library, modified for Angular.\n *\n * @param pattern Text containing an ICU expression that needs to be parsed.\n *\n */\n\n\nfunction parseICUBlock(pattern) {\n  var cases = [];\n  var values = [];\n  var icuType = 1\n  /* plural */\n  ;\n  var mainBinding = 0;\n  pattern = pattern.replace(ICU_BLOCK_REGEXP, function (str, binding, type) {\n    if (type === 'select') {\n      icuType = 0\n      /* select */\n      ;\n    } else {\n      icuType = 1\n      /* plural */\n      ;\n    }\n\n    mainBinding = parseInt(binding.substr(1), 10);\n    return '';\n  });\n  var parts = i18nParseTextIntoPartsAndICU(pattern); // Looking for (key block)+ sequence. One of the keys has to be \"other\".\n\n  for (var pos = 0; pos < parts.length;) {\n    var key = parts[pos++].trim();\n\n    if (icuType === 1\n    /* plural */\n    ) {\n      // Key can be \"=x\", we just want \"x\"\n      key = key.replace(/\\s*(?:=)?(\\w+)\\s*/, '$1');\n    }\n\n    if (key.length) {\n      cases.push(key);\n    }\n\n    var blocks = i18nParseTextIntoPartsAndICU(parts[pos++]);\n\n    if (cases.length > values.length) {\n      values.push(blocks);\n    }\n  } // TODO(ocombe): support ICU expressions in attributes, see #21615\n\n\n  return {\n    type: icuType,\n    mainBinding: mainBinding,\n    cases: cases,\n    values: values\n  };\n}\n/**\n * Breaks pattern into strings and top level {...} blocks.\n * Can be used to break a message into text and ICU expressions, or to break an ICU expression\n * into keys and cases. Original code from closure library, modified for Angular.\n *\n * @param pattern (sub)Pattern to be broken.\n * @returns An `Array<string|IcuExpression>` where:\n *   - odd positions: `string` => text between ICU expressions\n *   - even positions: `ICUExpression` => ICU expression parsed into `ICUExpression` record.\n */\n\n\nfunction i18nParseTextIntoPartsAndICU(pattern) {\n  if (!pattern) {\n    return [];\n  }\n\n  var prevPos = 0;\n  var braceStack = [];\n  var results = [];\n  var braces = /[{}]/g; // lastIndex doesn't get set to 0 so we have to.\n\n  braces.lastIndex = 0;\n  var match;\n\n  while (match = braces.exec(pattern)) {\n    var pos = match.index;\n\n    if (match[0] == '}') {\n      braceStack.pop();\n\n      if (braceStack.length == 0) {\n        // End of the block.\n        var block = pattern.substring(prevPos, pos);\n\n        if (ICU_BLOCK_REGEXP.test(block)) {\n          results.push(parseICUBlock(block));\n        } else {\n          results.push(block);\n        }\n\n        prevPos = pos + 1;\n      }\n    } else {\n      if (braceStack.length == 0) {\n        var _substring = pattern.substring(prevPos, pos);\n\n        results.push(_substring);\n        prevPos = pos + 1;\n      }\n\n      braceStack.push('{');\n    }\n  }\n\n  var substring = pattern.substring(prevPos);\n  results.push(substring);\n  return results;\n}\n/**\n * Parses a node, its children and its siblings, and generates the mutate & update OpCodes.\n *\n */\n\n\nfunction parseIcuCase(tView, tIcu, lView, updateOpCodes, parentIdx, caseName, unsafeCaseHtml, nestedIcus) {\n  var create = [];\n  var remove = [];\n  var update = [];\n\n  if (ngDevMode) {\n    attachDebugGetter(create, icuCreateOpCodesToString);\n    attachDebugGetter(remove, i18nRemoveOpCodesToString);\n    attachDebugGetter(update, i18nUpdateOpCodesToString);\n  }\n\n  tIcu.cases.push(caseName);\n  tIcu.create.push(create);\n  tIcu.remove.push(remove);\n  tIcu.update.push(update);\n  var inertBodyHelper = getInertBodyHelper(getDocument());\n  var inertBodyElement = inertBodyHelper.getInertBodyElement(unsafeCaseHtml);\n  ngDevMode && assertDefined(inertBodyElement, 'Unable to generate inert body element');\n  var inertRootNode = getTemplateContent(inertBodyElement) || inertBodyElement;\n\n  if (inertRootNode) {\n    return walkIcuTree(tView, tIcu, lView, updateOpCodes, create, remove, update, inertRootNode, parentIdx, nestedIcus, 0);\n  } else {\n    return 0;\n  }\n}\n\nfunction walkIcuTree(tView, tIcu, lView, sharedUpdateOpCodes, create, remove, update, parentNode, parentIdx, nestedIcus, depth) {\n  var bindingMask = 0;\n  var currentNode = parentNode.firstChild;\n\n  while (currentNode) {\n    var newIndex = allocExpando(tView, lView, 1, null);\n\n    switch (currentNode.nodeType) {\n      case Node.ELEMENT_NODE:\n        var element = currentNode;\n        var tagName = element.tagName.toLowerCase();\n\n        if (VALID_ELEMENTS.hasOwnProperty(tagName)) {\n          addCreateNodeAndAppend(create, ELEMENT_MARKER, tagName, parentIdx, newIndex);\n          tView.data[newIndex] = tagName;\n          var elAttrs = element.attributes;\n\n          for (var i = 0; i < elAttrs.length; i++) {\n            var attr = elAttrs.item(i);\n            var lowerAttrName = attr.name.toLowerCase();\n\n            var _hasBinding = !!attr.value.match(BINDING_REGEXP); // we assume the input string is safe, unless it's using a binding\n\n\n            if (_hasBinding) {\n              if (VALID_ATTRS.hasOwnProperty(lowerAttrName)) {\n                if (URI_ATTRS[lowerAttrName]) {\n                  generateBindingUpdateOpCodes(update, attr.value, newIndex, attr.name, _sanitizeUrl);\n                } else if (SRCSET_ATTRS[lowerAttrName]) {\n                  generateBindingUpdateOpCodes(update, attr.value, newIndex, attr.name, sanitizeSrcset);\n                } else {\n                  generateBindingUpdateOpCodes(update, attr.value, newIndex, attr.name);\n                }\n              } else {\n                ngDevMode && console.warn(\"WARNING: ignoring unsafe attribute value \" + \"\".concat(lowerAttrName, \" on element \").concat(tagName, \" (see http://g.co/ng/security#xss)\"));\n              }\n            } else {\n              addCreateAttribute(create, newIndex, attr);\n            }\n          } // Parse the children of this node (if any)\n\n\n          bindingMask = walkIcuTree(tView, tIcu, lView, sharedUpdateOpCodes, create, remove, update, currentNode, newIndex, nestedIcus, depth + 1) | bindingMask;\n          addRemoveNode(remove, newIndex, depth);\n        }\n\n        break;\n\n      case Node.TEXT_NODE:\n        var value = currentNode.textContent || '';\n        var hasBinding = value.match(BINDING_REGEXP);\n        addCreateNodeAndAppend(create, null, hasBinding ? '' : value, parentIdx, newIndex);\n        addRemoveNode(remove, newIndex, depth);\n\n        if (hasBinding) {\n          bindingMask = generateBindingUpdateOpCodes(update, value, newIndex) | bindingMask;\n        }\n\n        break;\n\n      case Node.COMMENT_NODE:\n        // Check if the comment node is a placeholder for a nested ICU\n        var isNestedIcu = NESTED_ICU.exec(currentNode.textContent || '');\n\n        if (isNestedIcu) {\n          var nestedIcuIndex = parseInt(isNestedIcu[1], 10);\n          var icuExpression = nestedIcus[nestedIcuIndex]; // Create the comment node that will anchor the ICU expression\n\n          addCreateNodeAndAppend(create, ICU_MARKER, ngDevMode ? \"nested ICU \".concat(nestedIcuIndex) : '', parentIdx, newIndex);\n          icuStart(tView, lView, sharedUpdateOpCodes, parentIdx, icuExpression, newIndex);\n          addRemoveNestedIcu(remove, newIndex, depth);\n        }\n\n        break;\n    }\n\n    currentNode = currentNode.nextSibling;\n  }\n\n  return bindingMask;\n}\n\nfunction addRemoveNode(remove, index, depth) {\n  if (depth === 0) {\n    remove.push(index);\n  }\n}\n\nfunction addRemoveNestedIcu(remove, index, depth) {\n  if (depth === 0) {\n    remove.push(~index); // remove ICU at `index`\n\n    remove.push(index); // remove ICU comment at `index`\n  }\n}\n\nfunction addUpdateIcuSwitch(update, icuExpression, index) {\n  update.push(toMaskBit(icuExpression.mainBinding), 2, -1 - icuExpression.mainBinding, index << 2\n  /* SHIFT_REF */\n  | 2\n  /* IcuSwitch */\n  );\n}\n\nfunction addUpdateIcuUpdate(update, bindingMask, index) {\n  update.push(bindingMask, 1, index << 2\n  /* SHIFT_REF */\n  | 3\n  /* IcuUpdate */\n  );\n}\n\nfunction addCreateNodeAndAppend(create, marker, text, appendToParentIdx, createAtIdx) {\n  if (marker !== null) {\n    create.push(marker);\n  }\n\n  create.push(text, createAtIdx, icuCreateOpCode(0\n  /* AppendChild */\n  , appendToParentIdx, createAtIdx));\n}\n\nfunction addCreateAttribute(create, newIndex, attr) {\n  create.push(newIndex << 1\n  /* SHIFT_REF */\n  | 1\n  /* Attr */\n  , attr.name, attr.value);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// i18nPostprocess consts\n\n\nvar ROOT_TEMPLATE_ID = 0;\nvar PP_MULTI_VALUE_PLACEHOLDERS_REGEXP = /\\[(�.+?�?)\\]/;\nvar PP_PLACEHOLDERS_REGEXP = /\\[(�.+?�?)\\]|(�\\/?\\*\\d+:\\d+�)/g;\nvar PP_ICU_VARS_REGEXP = /({\\s*)(VAR_(PLURAL|SELECT)(_\\d+)?)(\\s*,)/g;\nvar PP_ICU_PLACEHOLDERS_REGEXP = /{([A-Z0-9_]+)}/g;\nvar PP_ICUS_REGEXP = /�I18N_EXP_(ICU(_\\d+)?)�/g;\nvar PP_CLOSE_TEMPLATE_REGEXP = /\\/\\*/;\nvar PP_TEMPLATE_ID_REGEXP = /\\d+\\:(\\d+)/;\n/**\n * Handles message string post-processing for internationalization.\n *\n * Handles message string post-processing by transforming it from intermediate\n * format (that might contain some markers that we need to replace) to the final\n * form, consumable by i18nStart instruction. Post processing steps include:\n *\n * 1. Resolve all multi-value cases (like [�*1:1��#2:1�|�#4:1�|�5�])\n * 2. Replace all ICU vars (like \"VAR_PLURAL\")\n * 3. Replace all placeholders used inside ICUs in a form of {PLACEHOLDER}\n * 4. Replace all ICU references with corresponding values (like �ICU_EXP_ICU_1�)\n *    in case multiple ICUs have the same placeholder name\n *\n * @param message Raw translation string for post processing\n * @param replacements Set of replacements that should be applied\n *\n * @returns Transformed string that can be consumed by i18nStart instruction\n *\n * @codeGenApi\n */\n\nfunction i18nPostprocess(message) {\n  var replacements = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n  /**\n   * Step 1: resolve all multi-value placeholders like [�#5�|�*1:1��#2:1�|�#4:1�]\n   *\n   * Note: due to the way we process nested templates (BFS), multi-value placeholders are typically\n   * grouped by templates, for example: [�#5�|�#6�|�#1:1�|�#3:2�] where �#5� and �#6� belong to root\n   * template, �#1:1� belong to nested template with index 1 and �#1:2� - nested template with index\n   * 3. However in real templates the order might be different: i.e. �#1:1� and/or �#3:2� may go in\n   * front of �#6�. The post processing step restores the right order by keeping track of the\n   * template id stack and looks for placeholders that belong to the currently active template.\n   */\n  var result = message;\n\n  if (PP_MULTI_VALUE_PLACEHOLDERS_REGEXP.test(message)) {\n    var matches = {};\n    var templateIdsStack = [ROOT_TEMPLATE_ID];\n    result = result.replace(PP_PLACEHOLDERS_REGEXP, function (m, phs, tmpl) {\n      var content = phs || tmpl;\n      var placeholders = matches[content] || [];\n\n      if (!placeholders.length) {\n        content.split('|').forEach(function (placeholder) {\n          var match = placeholder.match(PP_TEMPLATE_ID_REGEXP);\n          var templateId = match ? parseInt(match[1], 10) : ROOT_TEMPLATE_ID;\n          var isCloseTemplateTag = PP_CLOSE_TEMPLATE_REGEXP.test(placeholder);\n          placeholders.push([templateId, isCloseTemplateTag, placeholder]);\n        });\n        matches[content] = placeholders;\n      }\n\n      if (!placeholders.length) {\n        throw new Error(\"i18n postprocess: unmatched placeholder - \".concat(content));\n      }\n\n      var currentTemplateId = templateIdsStack[templateIdsStack.length - 1];\n      var idx = 0; // find placeholder index that matches current template id\n\n      for (var i = 0; i < placeholders.length; i++) {\n        if (placeholders[i][0] === currentTemplateId) {\n          idx = i;\n          break;\n        }\n      } // update template id stack based on the current tag extracted\n\n\n      var _placeholders$idx = _slicedToArray(placeholders[idx], 3),\n          templateId = _placeholders$idx[0],\n          isCloseTemplateTag = _placeholders$idx[1],\n          placeholder = _placeholders$idx[2];\n\n      if (isCloseTemplateTag) {\n        templateIdsStack.pop();\n      } else if (currentTemplateId !== templateId) {\n        templateIdsStack.push(templateId);\n      } // remove processed tag from the list\n\n\n      placeholders.splice(idx, 1);\n      return placeholder;\n    });\n  } // return current result if no replacements specified\n\n\n  if (!Object.keys(replacements).length) {\n    return result;\n  }\n  /**\n   * Step 2: replace all ICU vars (like \"VAR_PLURAL\")\n   */\n\n\n  result = result.replace(PP_ICU_VARS_REGEXP, function (match, start, key, _type, _idx, end) {\n    return replacements.hasOwnProperty(key) ? \"\".concat(start).concat(replacements[key]).concat(end) : match;\n  });\n  /**\n   * Step 3: replace all placeholders used inside ICUs in a form of {PLACEHOLDER}\n   */\n\n  result = result.replace(PP_ICU_PLACEHOLDERS_REGEXP, function (match, key) {\n    return replacements.hasOwnProperty(key) ? replacements[key] : match;\n  });\n  /**\n   * Step 4: replace all ICU references with corresponding values (like �ICU_EXP_ICU_1�) in case\n   * multiple ICUs have the same placeholder name\n   */\n\n  result = result.replace(PP_ICUS_REGEXP, function (match, key) {\n    if (replacements.hasOwnProperty(key)) {\n      var list = replacements[key];\n\n      if (!list.length) {\n        throw new Error(\"i18n postprocess: unmatched ICU - \".concat(match, \" with key: \").concat(key));\n      }\n\n      return list.shift();\n    }\n\n    return match;\n  });\n  return result;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Marks a block of text as translatable.\n *\n * The instructions `i18nStart` and `i18nEnd` mark the translation block in the template.\n * The translation `message` is the value which is locale specific. The translation string may\n * contain placeholders which associate inner elements and sub-templates within the translation.\n *\n * The translation `message` placeholders are:\n * - `�{index}(:{block})�`: *Binding Placeholder*: Marks a location where an expression will be\n *   interpolated into. The placeholder `index` points to the expression binding index. An optional\n *   `block` that matches the sub-template in which it was declared.\n * - `�#{index}(:{block})�`/`�/#{index}(:{block})�`: *Element Placeholder*:  Marks the beginning\n *   and end of DOM element that were embedded in the original translation block. The placeholder\n *   `index` points to the element index in the template instructions set. An optional `block` that\n *   matches the sub-template in which it was declared.\n * - `�*{index}:{block}�`/`�/*{index}:{block}�`: *Sub-template Placeholder*: Sub-templates must be\n *   split up and translated separately in each angular template function. The `index` points to the\n *   `template` instruction index. A `block` that matches the sub-template in which it was declared.\n *\n * @param index A unique index of the translation in the static block.\n * @param messageIndex An index of the translation message from the `def.consts` array.\n * @param subTemplateIndex Optional sub-template index in the `message`.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵi18nStart(index, messageIndex) {\n  var subTemplateIndex = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : -1;\n  var tView = getTView();\n  var lView = getLView();\n  var adjustedIndex = HEADER_OFFSET + index;\n  ngDevMode && assertDefined(tView, \"tView should be defined\");\n  var message = getConstant(tView.consts, messageIndex);\n  var parentTNode = getCurrentParentTNode();\n\n  if (tView.firstCreatePass) {\n    i18nStartFirstCreatePass(tView, parentTNode === null ? 0 : parentTNode.index, lView, adjustedIndex, message, subTemplateIndex);\n  }\n\n  var tI18n = tView.data[adjustedIndex];\n  var sameViewParentTNode = parentTNode === lView[T_HOST] ? null : parentTNode;\n  var parentRNode = getClosestRElement(tView, sameViewParentTNode, lView); // If `parentTNode` is an `ElementContainer` than it has `<!--ng-container--->`.\n  // When we do inserts we have to make sure to insert in front of `<!--ng-container--->`.\n\n  var insertInFrontOf = parentTNode && parentTNode.type & 8\n  /* ElementContainer */\n  ? lView[parentTNode.index] : null;\n  applyCreateOpCodes(lView, tI18n.create, parentRNode, insertInFrontOf);\n  setInI18nBlock(true);\n}\n/**\n * Translates a translation block marked by `i18nStart` and `i18nEnd`. It inserts the text/ICU nodes\n * into the render tree, moves the placeholder nodes and removes the deleted nodes.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵi18nEnd() {\n  setInI18nBlock(false);\n}\n/**\n *\n * Use this instruction to create a translation block that doesn't contain any placeholder.\n * It calls both {@link i18nStart} and {@link i18nEnd} in one instruction.\n *\n * The translation `message` is the value which is locale specific. The translation string may\n * contain placeholders which associate inner elements and sub-templates within the translation.\n *\n * The translation `message` placeholders are:\n * - `�{index}(:{block})�`: *Binding Placeholder*: Marks a location where an expression will be\n *   interpolated into. The placeholder `index` points to the expression binding index. An optional\n *   `block` that matches the sub-template in which it was declared.\n * - `�#{index}(:{block})�`/`�/#{index}(:{block})�`: *Element Placeholder*:  Marks the beginning\n *   and end of DOM element that were embedded in the original translation block. The placeholder\n *   `index` points to the element index in the template instructions set. An optional `block` that\n *   matches the sub-template in which it was declared.\n * - `�*{index}:{block}�`/`�/*{index}:{block}�`: *Sub-template Placeholder*: Sub-templates must be\n *   split up and translated separately in each angular template function. The `index` points to the\n *   `template` instruction index. A `block` that matches the sub-template in which it was declared.\n *\n * @param index A unique index of the translation in the static block.\n * @param messageIndex An index of the translation message from the `def.consts` array.\n * @param subTemplateIndex Optional sub-template index in the `message`.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵi18n(index, messageIndex, subTemplateIndex) {\n  ɵɵi18nStart(index, messageIndex, subTemplateIndex);\n  ɵɵi18nEnd();\n}\n/**\n * Marks a list of attributes as translatable.\n *\n * @param index A unique index in the static block\n * @param values\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵi18nAttributes(index, attrsIndex) {\n  var tView = getTView();\n  ngDevMode && assertDefined(tView, \"tView should be defined\");\n  var attrs = getConstant(tView.consts, attrsIndex);\n  i18nAttributesFirstPass(tView, index + HEADER_OFFSET, attrs);\n}\n/**\n * Stores the values of the bindings during each update cycle in order to determine if we need to\n * update the translated nodes.\n *\n * @param value The binding's value\n * @returns This function returns itself so that it may be chained\n * (e.g. `i18nExp(ctx.name)(ctx.title)`)\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵi18nExp(value) {\n  var lView = getLView();\n  setMaskBit(bindingUpdated(lView, nextBindingIndex(), value));\n  return ɵɵi18nExp;\n}\n/**\n * Updates a translation block or an i18n attribute when the bindings have changed.\n *\n * @param index Index of either {@link i18nStart} (translation block) or {@link i18nAttributes}\n * (i18n attribute) on which it should update the content.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵi18nApply(index) {\n  applyI18n(getTView(), getLView(), index + HEADER_OFFSET);\n}\n/**\n * Handles message string post-processing for internationalization.\n *\n * Handles message string post-processing by transforming it from intermediate\n * format (that might contain some markers that we need to replace) to the final\n * form, consumable by i18nStart instruction. Post processing steps include:\n *\n * 1. Resolve all multi-value cases (like [�*1:1��#2:1�|�#4:1�|�5�])\n * 2. Replace all ICU vars (like \"VAR_PLURAL\")\n * 3. Replace all placeholders used inside ICUs in a form of {PLACEHOLDER}\n * 4. Replace all ICU references with corresponding values (like �ICU_EXP_ICU_1�)\n *    in case multiple ICUs have the same placeholder name\n *\n * @param message Raw translation string for post processing\n * @param replacements Set of replacements that should be applied\n *\n * @returns Transformed string that can be consumed by i18nStart instruction\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵi18nPostprocess(message) {\n  var replacements = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n  return i18nPostprocess(message, replacements);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Resolves the providers which are defined in the DirectiveDef.\n *\n * When inserting the tokens and the factories in their respective arrays, we can assume that\n * this method is called first for the component (if any), and then for other directives on the same\n * node.\n * As a consequence,the providers are always processed in that order:\n * 1) The view providers of the component\n * 2) The providers of the component\n * 3) The providers of the other directives\n * This matches the structure of the injectables arrays of a view (for each node).\n * So the tokens and the factories can be pushed at the end of the arrays, except\n * in one case for multi providers.\n *\n * @param def the directive definition\n * @param providers: Array of `providers`.\n * @param viewProviders: Array of `viewProviders`.\n */\n\n\nfunction providersResolver(def, providers, viewProviders) {\n  var tView = getTView();\n\n  if (tView.firstCreatePass) {\n    var isComponent = isComponentDef(def); // The list of view providers is processed first, and the flags are updated\n\n    resolveProvider$1(viewProviders, tView.data, tView.blueprint, isComponent, true); // Then, the list of providers is processed, and the flags are updated\n\n    resolveProvider$1(providers, tView.data, tView.blueprint, isComponent, false);\n  }\n}\n/**\n * Resolves a provider and publishes it to the DI system.\n */\n\n\nfunction resolveProvider$1(provider, tInjectables, lInjectablesBlueprint, isComponent, isViewProvider) {\n  provider = resolveForwardRef(provider);\n\n  if (Array.isArray(provider)) {\n    // Recursively call `resolveProvider`\n    // Recursion is OK in this case because this code will not be in hot-path once we implement\n    // cloning of the initial state.\n    for (var i = 0; i < provider.length; i++) {\n      resolveProvider$1(provider[i], tInjectables, lInjectablesBlueprint, isComponent, isViewProvider);\n    }\n  } else {\n    var tView = getTView();\n    var lView = getLView();\n    var token = isTypeProvider(provider) ? provider : resolveForwardRef(provider.provide);\n    var providerFactory = providerToFactory(provider);\n    var tNode = getCurrentTNode();\n    var beginIndex = tNode.providerIndexes & 1048575\n    /* ProvidersStartIndexMask */\n    ;\n    var endIndex = tNode.directiveStart;\n    var cptViewProvidersCount = tNode.providerIndexes >> 20\n    /* CptViewProvidersCountShift */\n    ;\n\n    if (isTypeProvider(provider) || !provider.multi) {\n      // Single provider case: the factory is created and pushed immediately\n      var factory = new NodeInjectorFactory(providerFactory, isViewProvider, ɵɵdirectiveInject);\n      var existingFactoryIndex = indexOf(token, tInjectables, isViewProvider ? beginIndex : beginIndex + cptViewProvidersCount, endIndex);\n\n      if (existingFactoryIndex === -1) {\n        diPublicInInjector(getOrCreateNodeInjectorForNode(tNode, lView), tView, token);\n        registerDestroyHooksIfSupported(tView, provider, tInjectables.length);\n        tInjectables.push(token);\n        tNode.directiveStart++;\n        tNode.directiveEnd++;\n\n        if (isViewProvider) {\n          tNode.providerIndexes += 1048576\n          /* CptViewProvidersCountShifter */\n          ;\n        }\n\n        lInjectablesBlueprint.push(factory);\n        lView.push(factory);\n      } else {\n        lInjectablesBlueprint[existingFactoryIndex] = factory;\n        lView[existingFactoryIndex] = factory;\n      }\n    } else {\n      // Multi provider case:\n      // We create a multi factory which is going to aggregate all the values.\n      // Since the output of such a factory depends on content or view injection,\n      // we create two of them, which are linked together.\n      //\n      // The first one (for view providers) is always in the first block of the injectables array,\n      // and the second one (for providers) is always in the second block.\n      // This is important because view providers have higher priority. When a multi token\n      // is being looked up, the view providers should be found first.\n      // Note that it is not possible to have a multi factory in the third block (directive block).\n      //\n      // The algorithm to process multi providers is as follows:\n      // 1) If the multi provider comes from the `viewProviders` of the component:\n      //   a) If the special view providers factory doesn't exist, it is created and pushed.\n      //   b) Else, the multi provider is added to the existing multi factory.\n      // 2) If the multi provider comes from the `providers` of the component or of another\n      // directive:\n      //   a) If the multi factory doesn't exist, it is created and provider pushed into it.\n      //      It is also linked to the multi factory for view providers, if it exists.\n      //   b) Else, the multi provider is added to the existing multi factory.\n      var existingProvidersFactoryIndex = indexOf(token, tInjectables, beginIndex + cptViewProvidersCount, endIndex);\n      var existingViewProvidersFactoryIndex = indexOf(token, tInjectables, beginIndex, beginIndex + cptViewProvidersCount);\n      var doesProvidersFactoryExist = existingProvidersFactoryIndex >= 0 && lInjectablesBlueprint[existingProvidersFactoryIndex];\n      var doesViewProvidersFactoryExist = existingViewProvidersFactoryIndex >= 0 && lInjectablesBlueprint[existingViewProvidersFactoryIndex];\n\n      if (isViewProvider && !doesViewProvidersFactoryExist || !isViewProvider && !doesProvidersFactoryExist) {\n        // Cases 1.a and 2.a\n        diPublicInInjector(getOrCreateNodeInjectorForNode(tNode, lView), tView, token);\n\n        var _factory = multiFactory(isViewProvider ? multiViewProvidersFactoryResolver : multiProvidersFactoryResolver, lInjectablesBlueprint.length, isViewProvider, isComponent, providerFactory);\n\n        if (!isViewProvider && doesViewProvidersFactoryExist) {\n          lInjectablesBlueprint[existingViewProvidersFactoryIndex].providerFactory = _factory;\n        }\n\n        registerDestroyHooksIfSupported(tView, provider, tInjectables.length, 0);\n        tInjectables.push(token);\n        tNode.directiveStart++;\n        tNode.directiveEnd++;\n\n        if (isViewProvider) {\n          tNode.providerIndexes += 1048576\n          /* CptViewProvidersCountShifter */\n          ;\n        }\n\n        lInjectablesBlueprint.push(_factory);\n        lView.push(_factory);\n      } else {\n        // Cases 1.b and 2.b\n        var indexInFactory = multiFactoryAdd(lInjectablesBlueprint[isViewProvider ? existingViewProvidersFactoryIndex : existingProvidersFactoryIndex], providerFactory, !isViewProvider && isComponent);\n        registerDestroyHooksIfSupported(tView, provider, existingProvidersFactoryIndex > -1 ? existingProvidersFactoryIndex : existingViewProvidersFactoryIndex, indexInFactory);\n      }\n\n      if (!isViewProvider && isComponent && doesViewProvidersFactoryExist) {\n        lInjectablesBlueprint[existingViewProvidersFactoryIndex].componentProviders++;\n      }\n    }\n  }\n}\n/**\n * Registers the `ngOnDestroy` hook of a provider, if the provider supports destroy hooks.\n * @param tView `TView` in which to register the hook.\n * @param provider Provider whose hook should be registered.\n * @param contextIndex Index under which to find the context for the hook when it's being invoked.\n * @param indexInFactory Only required for `multi` providers. Index of the provider in the multi\n * provider factory.\n */\n\n\nfunction registerDestroyHooksIfSupported(tView, provider, contextIndex, indexInFactory) {\n  var providerIsTypeProvider = isTypeProvider(provider);\n\n  if (providerIsTypeProvider || isClassProvider(provider)) {\n    var prototype = (provider.useClass || provider).prototype;\n    var ngOnDestroy = prototype.ngOnDestroy;\n\n    if (ngOnDestroy) {\n      var hooks = tView.destroyHooks || (tView.destroyHooks = []);\n\n      if (!providerIsTypeProvider && provider.multi) {\n        ngDevMode && assertDefined(indexInFactory, 'indexInFactory when registering multi factory destroy hook');\n        var existingCallbacksIndex = hooks.indexOf(contextIndex);\n\n        if (existingCallbacksIndex === -1) {\n          hooks.push(contextIndex, [indexInFactory, ngOnDestroy]);\n        } else {\n          hooks[existingCallbacksIndex + 1].push(indexInFactory, ngOnDestroy);\n        }\n      } else {\n        hooks.push(contextIndex, ngOnDestroy);\n      }\n    }\n  }\n}\n/**\n * Add a factory in a multi factory.\n * @returns Index at which the factory was inserted.\n */\n\n\nfunction multiFactoryAdd(multiFactory, factory, isComponentProvider) {\n  if (isComponentProvider) {\n    multiFactory.componentProviders++;\n  }\n\n  return multiFactory.multi.push(factory) - 1;\n}\n/**\n * Returns the index of item in the array, but only in the begin to end range.\n */\n\n\nfunction indexOf(item, arr, begin, end) {\n  for (var i = begin; i < end; i++) {\n    if (arr[i] === item) return i;\n  }\n\n  return -1;\n}\n/**\n * Use this with `multi` `providers`.\n */\n\n\nfunction multiProvidersFactoryResolver(_, tData, lData, tNode) {\n  return multiResolve(this.multi, []);\n}\n/**\n * Use this with `multi` `viewProviders`.\n *\n * This factory knows how to concatenate itself with the existing `multi` `providers`.\n */\n\n\nfunction multiViewProvidersFactoryResolver(_, tData, lView, tNode) {\n  var factories = this.multi;\n  var result;\n\n  if (this.providerFactory) {\n    var componentCount = this.providerFactory.componentProviders;\n    var multiProviders = getNodeInjectable(lView, lView[TVIEW], this.providerFactory.index, tNode); // Copy the section of the array which contains `multi` `providers` from the component\n\n    result = multiProviders.slice(0, componentCount); // Insert the `viewProvider` instances.\n\n    multiResolve(factories, result); // Copy the section of the array which contains `multi` `providers` from other directives\n\n    for (var i = componentCount; i < multiProviders.length; i++) {\n      result.push(multiProviders[i]);\n    }\n  } else {\n    result = []; // Insert the `viewProvider` instances.\n\n    multiResolve(factories, result);\n  }\n\n  return result;\n}\n/**\n * Maps an array of factories into an array of values.\n */\n\n\nfunction multiResolve(factories, result) {\n  for (var i = 0; i < factories.length; i++) {\n    var factory = factories[i];\n    result.push(factory());\n  }\n\n  return result;\n}\n/**\n * Creates a multi factory.\n */\n\n\nfunction multiFactory(factoryFn, index, isViewProvider, isComponent, f) {\n  var factory = new NodeInjectorFactory(factoryFn, isViewProvider, ɵɵdirectiveInject);\n  factory.multi = [];\n  factory.index = index;\n  factory.componentProviders = 0;\n  multiFactoryAdd(factory, f, isComponent && !isViewProvider);\n  return factory;\n}\n/**\n * This feature resolves the providers of a directive (or component),\n * and publish them into the DI system, making it visible to others for injection.\n *\n * For example:\n * ```ts\n * class ComponentWithProviders {\n *   constructor(private greeter: GreeterDE) {}\n *\n *   static ɵcmp = defineComponent({\n *     type: ComponentWithProviders,\n *     selectors: [['component-with-providers']],\n *    factory: () => new ComponentWithProviders(directiveInject(GreeterDE as any)),\n *    decls: 1,\n *    vars: 1,\n *    template: function(fs: RenderFlags, ctx: ComponentWithProviders) {\n *      if (fs & RenderFlags.Create) {\n *        ɵɵtext(0);\n *      }\n *      if (fs & RenderFlags.Update) {\n *        ɵɵtextInterpolate(ctx.greeter.greet());\n *      }\n *    },\n *    features: [ɵɵProvidersFeature([GreeterDE])]\n *  });\n * }\n * ```\n *\n * @param definition\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵProvidersFeature(providers) {\n  var viewProviders = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];\n  return function (definition) {\n    definition.providersResolver = function (def, processProvidersFn) {\n      return providersResolver(def, //\n      processProvidersFn ? processProvidersFn(providers) : providers, //\n      viewProviders);\n    };\n  };\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Represents a component created by a `ComponentFactory`.\n * Provides access to the component instance and related objects,\n * and provides the means of destroying the instance.\n *\n * @publicApi\n */\n\n\nvar ComponentRef = /*#__PURE__*/_createClass2(function ComponentRef() {\n  _classCallCheck(this, ComponentRef);\n});\n/**\n * Base class for a factory that can create a component dynamically.\n * Instantiate a factory for a given type of component with `resolveComponentFactory()`.\n * Use the resulting `ComponentFactory.create()` method to create a component of that type.\n *\n * @see [Dynamic Components](guide/dynamic-component-loader)\n *\n * @publicApi\n */\n\n\nvar ComponentFactory = /*#__PURE__*/_createClass2(function ComponentFactory() {\n  _classCallCheck(this, ComponentFactory);\n});\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction noComponentFactoryError(component) {\n  var error = Error(\"No component factory found for \".concat(stringify(component), \". Did you add it to @NgModule.entryComponents?\"));\n  error[ERROR_COMPONENT] = component;\n  return error;\n}\n\nvar ERROR_COMPONENT = 'ngComponent';\n\nfunction getComponent$1(error) {\n  return error[ERROR_COMPONENT];\n}\n\nvar _NullComponentFactoryResolver = /*#__PURE__*/function () {\n  function _NullComponentFactoryResolver() {\n    _classCallCheck(this, _NullComponentFactoryResolver);\n  }\n\n  _createClass2(_NullComponentFactoryResolver, [{\n    key: \"resolveComponentFactory\",\n    value: function resolveComponentFactory(component) {\n      throw noComponentFactoryError(component);\n    }\n  }]);\n\n  return _NullComponentFactoryResolver;\n}();\n/**\n * A simple registry that maps `Components` to generated `ComponentFactory` classes\n * that can be used to create instances of components.\n * Use to obtain the factory for a given component type,\n * then use the factory's `create()` method to create a component of that type.\n *\n * @see [Dynamic Components](guide/dynamic-component-loader)\n * @publicApi\n */\n\n\nvar ComponentFactoryResolver = /*#__PURE__*/_createClass2(function ComponentFactoryResolver() {\n  _classCallCheck(this, ComponentFactoryResolver);\n});\n\nComponentFactoryResolver.NULL = new _NullComponentFactoryResolver();\n\nvar CodegenComponentFactoryResolver = /*#__PURE__*/function () {\n  function CodegenComponentFactoryResolver(factories, _parent, _ngModule) {\n    _classCallCheck(this, CodegenComponentFactoryResolver);\n\n    this._parent = _parent;\n    this._ngModule = _ngModule;\n    this._factories = new Map();\n\n    for (var i = 0; i < factories.length; i++) {\n      var factory = factories[i];\n\n      this._factories.set(factory.componentType, factory);\n    }\n  }\n\n  _createClass2(CodegenComponentFactoryResolver, [{\n    key: \"resolveComponentFactory\",\n    value: function resolveComponentFactory(component) {\n      var factory = this._factories.get(component);\n\n      if (!factory && this._parent) {\n        factory = this._parent.resolveComponentFactory(component);\n      }\n\n      if (!factory) {\n        throw noComponentFactoryError(component);\n      }\n\n      return new ComponentFactoryBoundToModule(factory, this._ngModule);\n    }\n  }]);\n\n  return CodegenComponentFactoryResolver;\n}();\n\nvar ComponentFactoryBoundToModule = /*#__PURE__*/function (_ComponentFactory) {\n  _inherits(ComponentFactoryBoundToModule, _ComponentFactory);\n\n  var _super7 = _createSuper(ComponentFactoryBoundToModule);\n\n  function ComponentFactoryBoundToModule(factory, ngModule) {\n    var _this6;\n\n    _classCallCheck(this, ComponentFactoryBoundToModule);\n\n    _this6 = _super7.call(this);\n    _this6.factory = factory;\n    _this6.ngModule = ngModule;\n    _this6.selector = factory.selector;\n    _this6.componentType = factory.componentType;\n    _this6.ngContentSelectors = factory.ngContentSelectors;\n    _this6.inputs = factory.inputs;\n    _this6.outputs = factory.outputs;\n    return _this6;\n  }\n\n  _createClass2(ComponentFactoryBoundToModule, [{\n    key: \"create\",\n    value: function create(injector, projectableNodes, rootSelectorOrNode, ngModule) {\n      return this.factory.create(injector, projectableNodes, rootSelectorOrNode, ngModule || this.ngModule);\n    }\n  }]);\n\n  return ComponentFactoryBoundToModule;\n}(ComponentFactory);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction noop() {// Do nothing.\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Creates an ElementRef from the most recent node.\n *\n * @returns The ElementRef instance to use\n */\n\n\nfunction injectElementRef() {\n  return createElementRef(getCurrentTNode(), getLView());\n}\n/**\n * Creates an ElementRef given a node.\n *\n * @param tNode The node for which you'd like an ElementRef\n * @param lView The view to which the node belongs\n * @returns The ElementRef instance to use\n */\n\n\nfunction createElementRef(tNode, lView) {\n  return new ElementRef(getNativeByTNode(tNode, lView));\n}\n\nvar SWITCH_ELEMENT_REF_FACTORY__POST_R3__ = injectElementRef;\nvar SWITCH_ELEMENT_REF_FACTORY__PRE_R3__ = noop;\nvar SWITCH_ELEMENT_REF_FACTORY = SWITCH_ELEMENT_REF_FACTORY__PRE_R3__;\n/**\n * A wrapper around a native element inside of a View.\n *\n * An `ElementRef` is backed by a render-specific element. In the browser, this is usually a DOM\n * element.\n *\n * @security Permitting direct access to the DOM can make your application more vulnerable to\n * XSS attacks. Carefully review any use of `ElementRef` in your code. For more detail, see the\n * [Security Guide](http://g.co/ng/security).\n *\n * @publicApi\n */\n// Note: We don't expose things like `Injector`, `ViewContainer`, ... here,\n// i.e. users have to ask for what they need. With that, we can build better analysis tools\n// and could do better codegen in the future.\n\nvar ElementRef = /*#__PURE__*/_createClass2(function ElementRef(nativeElement) {\n  _classCallCheck(this, ElementRef);\n\n  this.nativeElement = nativeElement;\n});\n/**\n * @internal\n * @nocollapse\n */\n\n\nElementRef.__NG_ELEMENT_ID__ = SWITCH_ELEMENT_REF_FACTORY;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar Renderer2Interceptor = new InjectionToken('Renderer2Interceptor');\n/**\n * Creates and initializes a custom renderer that implements the `Renderer2` base class.\n *\n * @publicApi\n */\n\nvar RendererFactory2 = /*#__PURE__*/_createClass2(function RendererFactory2() {\n  _classCallCheck(this, RendererFactory2);\n});\n/**\n * Extend this base class to implement custom rendering. By default, Angular\n * renders a template into DOM. You can use custom rendering to intercept\n * rendering calls, or to render to something other than DOM.\n *\n * Create your custom renderer using `RendererFactory2`.\n *\n * Use a custom renderer to bypass Angular's templating and\n * make custom UI changes that can't be expressed declaratively.\n * For example if you need to set a property or an attribute whose name is\n * not statically known, use the `setProperty()` or\n * `setAttribute()` method.\n *\n * @publicApi\n */\n\n\nvar Renderer2 = /*#__PURE__*/_createClass2(function Renderer2() {\n  _classCallCheck(this, Renderer2);\n});\n/**\n * @internal\n * @nocollapse\n */\n\n\nRenderer2.__NG_ELEMENT_ID__ = function () {\n  return SWITCH_RENDERER2_FACTORY();\n};\n\nvar SWITCH_RENDERER2_FACTORY__POST_R3__ = injectRenderer2;\nvar SWITCH_RENDERER2_FACTORY__PRE_R3__ = noop;\nvar SWITCH_RENDERER2_FACTORY = SWITCH_RENDERER2_FACTORY__PRE_R3__;\n/** Returns a Renderer2 (or throws when application was bootstrapped with Renderer3) */\n\nfunction getOrCreateRenderer2(lView) {\n  var renderer = lView[RENDERER];\n\n  if (ngDevMode && !isProceduralRenderer(renderer)) {\n    throw new Error('Cannot inject Renderer2 when the application uses Renderer3!');\n  }\n\n  return renderer;\n}\n/** Injects a Renderer2 for the current component. */\n\n\nfunction injectRenderer2() {\n  // We need the Renderer to be based on the component that it's being injected into, however since\n  // DI happens before we've entered its view, `getLView` will return the parent view instead.\n  var lView = getLView();\n  var tNode = getCurrentTNode();\n  var nodeAtIndex = getComponentLViewByIndex(tNode.index, lView);\n  return getOrCreateRenderer2(isLView(nodeAtIndex) ? nodeAtIndex : lView);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Sanitizer is used by the views to sanitize potentially dangerous values.\n *\n * @publicApi\n */\n\n\nvar Sanitizer = /*#__PURE__*/_createClass2(function Sanitizer() {\n  _classCallCheck(this, Sanitizer);\n});\n/** @nocollapse */\n\n\nSanitizer.ɵprov = ɵɵdefineInjectable({\n  token: Sanitizer,\n  providedIn: 'root',\n  factory: function factory() {\n    return null;\n  }\n});\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @description Represents the version of Angular\n *\n * @publicApi\n */\n\nvar Version = /*#__PURE__*/_createClass2(function Version(full) {\n  _classCallCheck(this, Version);\n\n  this.full = full;\n  this.major = full.split('.')[0];\n  this.minor = full.split('.')[1];\n  this.patch = full.split('.').slice(2).join('.');\n});\n/**\n * @publicApi\n */\n\n\nvar VERSION = new Version('11.0.2');\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar DefaultIterableDifferFactory = /*#__PURE__*/function () {\n  function DefaultIterableDifferFactory() {\n    _classCallCheck(this, DefaultIterableDifferFactory);\n  }\n\n  _createClass2(DefaultIterableDifferFactory, [{\n    key: \"supports\",\n    value: function supports(obj) {\n      return isListLikeIterable(obj);\n    }\n  }, {\n    key: \"create\",\n    value: function create(trackByFn) {\n      return new DefaultIterableDiffer(trackByFn);\n    }\n  }]);\n\n  return DefaultIterableDifferFactory;\n}();\n\nvar trackByIdentity = function trackByIdentity(index, item) {\n  return item;\n};\n\nvar ɵ0$b = trackByIdentity;\n/**\n * @deprecated v4.0.0 - Should not be part of public API.\n * @publicApi\n */\n\nvar DefaultIterableDiffer = /*#__PURE__*/function () {\n  function DefaultIterableDiffer(trackByFn) {\n    _classCallCheck(this, DefaultIterableDiffer);\n\n    this.length = 0; // Keeps track of the used records at any point in time (during & across `_check()` calls)\n\n    this._linkedRecords = null; // Keeps track of the removed records at any point in time during `_check()` calls.\n\n    this._unlinkedRecords = null;\n    this._previousItHead = null;\n    this._itHead = null;\n    this._itTail = null;\n    this._additionsHead = null;\n    this._additionsTail = null;\n    this._movesHead = null;\n    this._movesTail = null;\n    this._removalsHead = null;\n    this._removalsTail = null; // Keeps track of records where custom track by is the same, but item identity has changed\n\n    this._identityChangesHead = null;\n    this._identityChangesTail = null;\n    this._trackByFn = trackByFn || trackByIdentity;\n  }\n\n  _createClass2(DefaultIterableDiffer, [{\n    key: \"forEachItem\",\n    value: function forEachItem(fn) {\n      var record;\n\n      for (record = this._itHead; record !== null; record = record._next) {\n        fn(record);\n      }\n    }\n  }, {\n    key: \"forEachOperation\",\n    value: function forEachOperation(fn) {\n      var nextIt = this._itHead;\n      var nextRemove = this._removalsHead;\n      var addRemoveOffset = 0;\n      var moveOffsets = null;\n\n      while (nextIt || nextRemove) {\n        // Figure out which is the next record to process\n        // Order: remove, add, move\n        var record = !nextRemove || nextIt && nextIt.currentIndex < getPreviousIndex(nextRemove, addRemoveOffset, moveOffsets) ? nextIt : nextRemove;\n        var adjPreviousIndex = getPreviousIndex(record, addRemoveOffset, moveOffsets);\n        var currentIndex = record.currentIndex; // consume the item, and adjust the addRemoveOffset and update moveDistance if necessary\n\n        if (record === nextRemove) {\n          addRemoveOffset--;\n          nextRemove = nextRemove._nextRemoved;\n        } else {\n          nextIt = nextIt._next;\n\n          if (record.previousIndex == null) {\n            addRemoveOffset++;\n          } else {\n            // INVARIANT:  currentIndex < previousIndex\n            if (!moveOffsets) moveOffsets = [];\n            var localMovePreviousIndex = adjPreviousIndex - addRemoveOffset;\n            var localCurrentIndex = currentIndex - addRemoveOffset;\n\n            if (localMovePreviousIndex != localCurrentIndex) {\n              for (var i = 0; i < localMovePreviousIndex; i++) {\n                var offset = i < moveOffsets.length ? moveOffsets[i] : moveOffsets[i] = 0;\n                var index = offset + i;\n\n                if (localCurrentIndex <= index && index < localMovePreviousIndex) {\n                  moveOffsets[i] = offset + 1;\n                }\n              }\n\n              var previousIndex = record.previousIndex;\n              moveOffsets[previousIndex] = localCurrentIndex - localMovePreviousIndex;\n            }\n          }\n        }\n\n        if (adjPreviousIndex !== currentIndex) {\n          fn(record, adjPreviousIndex, currentIndex);\n        }\n      }\n    }\n  }, {\n    key: \"forEachPreviousItem\",\n    value: function forEachPreviousItem(fn) {\n      var record;\n\n      for (record = this._previousItHead; record !== null; record = record._nextPrevious) {\n        fn(record);\n      }\n    }\n  }, {\n    key: \"forEachAddedItem\",\n    value: function forEachAddedItem(fn) {\n      var record;\n\n      for (record = this._additionsHead; record !== null; record = record._nextAdded) {\n        fn(record);\n      }\n    }\n  }, {\n    key: \"forEachMovedItem\",\n    value: function forEachMovedItem(fn) {\n      var record;\n\n      for (record = this._movesHead; record !== null; record = record._nextMoved) {\n        fn(record);\n      }\n    }\n  }, {\n    key: \"forEachRemovedItem\",\n    value: function forEachRemovedItem(fn) {\n      var record;\n\n      for (record = this._removalsHead; record !== null; record = record._nextRemoved) {\n        fn(record);\n      }\n    }\n  }, {\n    key: \"forEachIdentityChange\",\n    value: function forEachIdentityChange(fn) {\n      var record;\n\n      for (record = this._identityChangesHead; record !== null; record = record._nextIdentityChange) {\n        fn(record);\n      }\n    }\n  }, {\n    key: \"diff\",\n    value: function diff(collection) {\n      if (collection == null) collection = [];\n\n      if (!isListLikeIterable(collection)) {\n        throw new Error(\"Error trying to diff '\".concat(stringify(collection), \"'. Only arrays and iterables are allowed\"));\n      }\n\n      if (this.check(collection)) {\n        return this;\n      } else {\n        return null;\n      }\n    }\n  }, {\n    key: \"onDestroy\",\n    value: function onDestroy() {}\n  }, {\n    key: \"check\",\n    value: function check(collection) {\n      var _this7 = this;\n\n      this._reset();\n\n      var record = this._itHead;\n      var mayBeDirty = false;\n      var index;\n      var item;\n      var itemTrackBy;\n\n      if (Array.isArray(collection)) {\n        this.length = collection.length;\n\n        for (var _index3 = 0; _index3 < this.length; _index3++) {\n          item = collection[_index3];\n          itemTrackBy = this._trackByFn(_index3, item);\n\n          if (record === null || !Object.is(record.trackById, itemTrackBy)) {\n            record = this._mismatch(record, item, itemTrackBy, _index3);\n            mayBeDirty = true;\n          } else {\n            if (mayBeDirty) {\n              // TODO(misko): can we limit this to duplicates only?\n              record = this._verifyReinsertion(record, item, itemTrackBy, _index3);\n            }\n\n            if (!Object.is(record.item, item)) this._addIdentityChange(record, item);\n          }\n\n          record = record._next;\n        }\n      } else {\n        index = 0;\n        iterateListLike(collection, function (item) {\n          itemTrackBy = _this7._trackByFn(index, item);\n\n          if (record === null || !Object.is(record.trackById, itemTrackBy)) {\n            record = _this7._mismatch(record, item, itemTrackBy, index);\n            mayBeDirty = true;\n          } else {\n            if (mayBeDirty) {\n              // TODO(misko): can we limit this to duplicates only?\n              record = _this7._verifyReinsertion(record, item, itemTrackBy, index);\n            }\n\n            if (!Object.is(record.item, item)) _this7._addIdentityChange(record, item);\n          }\n\n          record = record._next;\n          index++;\n        });\n        this.length = index;\n      }\n\n      this._truncate(record);\n\n      this.collection = collection;\n      return this.isDirty;\n    }\n    /* CollectionChanges is considered dirty if it has any additions, moves, removals, or identity\n     * changes.\n     */\n\n  }, {\n    key: \"isDirty\",\n    get: function get() {\n      return this._additionsHead !== null || this._movesHead !== null || this._removalsHead !== null || this._identityChangesHead !== null;\n    }\n    /**\n     * Reset the state of the change objects to show no changes. This means set previousKey to\n     * currentKey, and clear all of the queues (additions, moves, removals).\n     * Set the previousIndexes of moved and added items to their currentIndexes\n     * Reset the list of additions, moves and removals\n     *\n     * @internal\n     */\n\n  }, {\n    key: \"_reset\",\n    value: function _reset() {\n      if (this.isDirty) {\n        var record;\n\n        for (record = this._previousItHead = this._itHead; record !== null; record = record._next) {\n          record._nextPrevious = record._next;\n        }\n\n        for (record = this._additionsHead; record !== null; record = record._nextAdded) {\n          record.previousIndex = record.currentIndex;\n        }\n\n        this._additionsHead = this._additionsTail = null;\n\n        for (record = this._movesHead; record !== null; record = record._nextMoved) {\n          record.previousIndex = record.currentIndex;\n        }\n\n        this._movesHead = this._movesTail = null;\n        this._removalsHead = this._removalsTail = null;\n        this._identityChangesHead = this._identityChangesTail = null; // TODO(vicb): when assert gets supported\n        // assert(!this.isDirty);\n      }\n    }\n    /**\n     * This is the core function which handles differences between collections.\n     *\n     * - `record` is the record which we saw at this position last time. If null then it is a new\n     *   item.\n     * - `item` is the current item in the collection\n     * - `index` is the position of the item in the collection\n     *\n     * @internal\n     */\n\n  }, {\n    key: \"_mismatch\",\n    value: function _mismatch(record, item, itemTrackBy, index) {\n      // The previous record after which we will append the current one.\n      var previousRecord;\n\n      if (record === null) {\n        previousRecord = this._itTail;\n      } else {\n        previousRecord = record._prev; // Remove the record from the collection since we know it does not match the item.\n\n        this._remove(record);\n      } // Attempt to see if we have seen the item before.\n\n\n      record = this._linkedRecords === null ? null : this._linkedRecords.get(itemTrackBy, index);\n\n      if (record !== null) {\n        // We have seen this before, we need to move it forward in the collection.\n        // But first we need to check if identity changed, so we can update in view if necessary\n        if (!Object.is(record.item, item)) this._addIdentityChange(record, item);\n\n        this._moveAfter(record, previousRecord, index);\n      } else {\n        // Never seen it, check evicted list.\n        record = this._unlinkedRecords === null ? null : this._unlinkedRecords.get(itemTrackBy, null);\n\n        if (record !== null) {\n          // It is an item which we have evicted earlier: reinsert it back into the list.\n          // But first we need to check if identity changed, so we can update in view if necessary\n          if (!Object.is(record.item, item)) this._addIdentityChange(record, item);\n\n          this._reinsertAfter(record, previousRecord, index);\n        } else {\n          // It is a new item: add it.\n          record = this._addAfter(new IterableChangeRecord_(item, itemTrackBy), previousRecord, index);\n        }\n      }\n\n      return record;\n    }\n    /**\n     * This check is only needed if an array contains duplicates. (Short circuit of nothing dirty)\n     *\n     * Use case: `[a, a]` => `[b, a, a]`\n     *\n     * If we did not have this check then the insertion of `b` would:\n     *   1) evict first `a`\n     *   2) insert `b` at `0` index.\n     *   3) leave `a` at index `1` as is. <-- this is wrong!\n     *   3) reinsert `a` at index 2. <-- this is wrong!\n     *\n     * The correct behavior is:\n     *   1) evict first `a`\n     *   2) insert `b` at `0` index.\n     *   3) reinsert `a` at index 1.\n     *   3) move `a` at from `1` to `2`.\n     *\n     *\n     * Double check that we have not evicted a duplicate item. We need to check if the item type may\n     * have already been removed:\n     * The insertion of b will evict the first 'a'. If we don't reinsert it now it will be reinserted\n     * at the end. Which will show up as the two 'a's switching position. This is incorrect, since a\n     * better way to think of it is as insert of 'b' rather then switch 'a' with 'b' and then add 'a'\n     * at the end.\n     *\n     * @internal\n     */\n\n  }, {\n    key: \"_verifyReinsertion\",\n    value: function _verifyReinsertion(record, item, itemTrackBy, index) {\n      var reinsertRecord = this._unlinkedRecords === null ? null : this._unlinkedRecords.get(itemTrackBy, null);\n\n      if (reinsertRecord !== null) {\n        record = this._reinsertAfter(reinsertRecord, record._prev, index);\n      } else if (record.currentIndex != index) {\n        record.currentIndex = index;\n\n        this._addToMoves(record, index);\n      }\n\n      return record;\n    }\n    /**\n     * Get rid of any excess {@link IterableChangeRecord_}s from the previous collection\n     *\n     * - `record` The first excess {@link IterableChangeRecord_}.\n     *\n     * @internal\n     */\n\n  }, {\n    key: \"_truncate\",\n    value: function _truncate(record) {\n      // Anything after that needs to be removed;\n      while (record !== null) {\n        var nextRecord = record._next;\n\n        this._addToRemovals(this._unlink(record));\n\n        record = nextRecord;\n      }\n\n      if (this._unlinkedRecords !== null) {\n        this._unlinkedRecords.clear();\n      }\n\n      if (this._additionsTail !== null) {\n        this._additionsTail._nextAdded = null;\n      }\n\n      if (this._movesTail !== null) {\n        this._movesTail._nextMoved = null;\n      }\n\n      if (this._itTail !== null) {\n        this._itTail._next = null;\n      }\n\n      if (this._removalsTail !== null) {\n        this._removalsTail._nextRemoved = null;\n      }\n\n      if (this._identityChangesTail !== null) {\n        this._identityChangesTail._nextIdentityChange = null;\n      }\n    }\n    /** @internal */\n\n  }, {\n    key: \"_reinsertAfter\",\n    value: function _reinsertAfter(record, prevRecord, index) {\n      if (this._unlinkedRecords !== null) {\n        this._unlinkedRecords.remove(record);\n      }\n\n      var prev = record._prevRemoved;\n      var next = record._nextRemoved;\n\n      if (prev === null) {\n        this._removalsHead = next;\n      } else {\n        prev._nextRemoved = next;\n      }\n\n      if (next === null) {\n        this._removalsTail = prev;\n      } else {\n        next._prevRemoved = prev;\n      }\n\n      this._insertAfter(record, prevRecord, index);\n\n      this._addToMoves(record, index);\n\n      return record;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_moveAfter\",\n    value: function _moveAfter(record, prevRecord, index) {\n      this._unlink(record);\n\n      this._insertAfter(record, prevRecord, index);\n\n      this._addToMoves(record, index);\n\n      return record;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_addAfter\",\n    value: function _addAfter(record, prevRecord, index) {\n      this._insertAfter(record, prevRecord, index);\n\n      if (this._additionsTail === null) {\n        // TODO(vicb):\n        // assert(this._additionsHead === null);\n        this._additionsTail = this._additionsHead = record;\n      } else {\n        // TODO(vicb):\n        // assert(_additionsTail._nextAdded === null);\n        // assert(record._nextAdded === null);\n        this._additionsTail = this._additionsTail._nextAdded = record;\n      }\n\n      return record;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_insertAfter\",\n    value: function _insertAfter(record, prevRecord, index) {\n      // TODO(vicb):\n      // assert(record != prevRecord);\n      // assert(record._next === null);\n      // assert(record._prev === null);\n      var next = prevRecord === null ? this._itHead : prevRecord._next; // TODO(vicb):\n      // assert(next != record);\n      // assert(prevRecord != record);\n\n      record._next = next;\n      record._prev = prevRecord;\n\n      if (next === null) {\n        this._itTail = record;\n      } else {\n        next._prev = record;\n      }\n\n      if (prevRecord === null) {\n        this._itHead = record;\n      } else {\n        prevRecord._next = record;\n      }\n\n      if (this._linkedRecords === null) {\n        this._linkedRecords = new _DuplicateMap();\n      }\n\n      this._linkedRecords.put(record);\n\n      record.currentIndex = index;\n      return record;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_remove\",\n    value: function _remove(record) {\n      return this._addToRemovals(this._unlink(record));\n    }\n    /** @internal */\n\n  }, {\n    key: \"_unlink\",\n    value: function _unlink(record) {\n      if (this._linkedRecords !== null) {\n        this._linkedRecords.remove(record);\n      }\n\n      var prev = record._prev;\n      var next = record._next; // TODO(vicb):\n      // assert((record._prev = null) === null);\n      // assert((record._next = null) === null);\n\n      if (prev === null) {\n        this._itHead = next;\n      } else {\n        prev._next = next;\n      }\n\n      if (next === null) {\n        this._itTail = prev;\n      } else {\n        next._prev = prev;\n      }\n\n      return record;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_addToMoves\",\n    value: function _addToMoves(record, toIndex) {\n      // TODO(vicb):\n      // assert(record._nextMoved === null);\n      if (record.previousIndex === toIndex) {\n        return record;\n      }\n\n      if (this._movesTail === null) {\n        // TODO(vicb):\n        // assert(_movesHead === null);\n        this._movesTail = this._movesHead = record;\n      } else {\n        // TODO(vicb):\n        // assert(_movesTail._nextMoved === null);\n        this._movesTail = this._movesTail._nextMoved = record;\n      }\n\n      return record;\n    }\n  }, {\n    key: \"_addToRemovals\",\n    value: function _addToRemovals(record) {\n      if (this._unlinkedRecords === null) {\n        this._unlinkedRecords = new _DuplicateMap();\n      }\n\n      this._unlinkedRecords.put(record);\n\n      record.currentIndex = null;\n      record._nextRemoved = null;\n\n      if (this._removalsTail === null) {\n        // TODO(vicb):\n        // assert(_removalsHead === null);\n        this._removalsTail = this._removalsHead = record;\n        record._prevRemoved = null;\n      } else {\n        // TODO(vicb):\n        // assert(_removalsTail._nextRemoved === null);\n        // assert(record._nextRemoved === null);\n        record._prevRemoved = this._removalsTail;\n        this._removalsTail = this._removalsTail._nextRemoved = record;\n      }\n\n      return record;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_addIdentityChange\",\n    value: function _addIdentityChange(record, item) {\n      record.item = item;\n\n      if (this._identityChangesTail === null) {\n        this._identityChangesTail = this._identityChangesHead = record;\n      } else {\n        this._identityChangesTail = this._identityChangesTail._nextIdentityChange = record;\n      }\n\n      return record;\n    }\n  }]);\n\n  return DefaultIterableDiffer;\n}();\n\nvar IterableChangeRecord_ = /*#__PURE__*/_createClass2(function IterableChangeRecord_(item, trackById) {\n  _classCallCheck(this, IterableChangeRecord_);\n\n  this.item = item;\n  this.trackById = trackById;\n  this.currentIndex = null;\n  this.previousIndex = null;\n  /** @internal */\n\n  this._nextPrevious = null;\n  /** @internal */\n\n  this._prev = null;\n  /** @internal */\n\n  this._next = null;\n  /** @internal */\n\n  this._prevDup = null;\n  /** @internal */\n\n  this._nextDup = null;\n  /** @internal */\n\n  this._prevRemoved = null;\n  /** @internal */\n\n  this._nextRemoved = null;\n  /** @internal */\n\n  this._nextAdded = null;\n  /** @internal */\n\n  this._nextMoved = null;\n  /** @internal */\n\n  this._nextIdentityChange = null;\n}); // A linked list of IterableChangeRecords with the same IterableChangeRecord_.item\n\n\nvar _DuplicateItemRecordList = /*#__PURE__*/function () {\n  function _DuplicateItemRecordList() {\n    _classCallCheck(this, _DuplicateItemRecordList);\n\n    /** @internal */\n    this._head = null;\n    /** @internal */\n\n    this._tail = null;\n  }\n  /**\n   * Append the record to the list of duplicates.\n   *\n   * Note: by design all records in the list of duplicates hold the same value in record.item.\n   */\n\n\n  _createClass2(_DuplicateItemRecordList, [{\n    key: \"add\",\n    value: function add(record) {\n      if (this._head === null) {\n        this._head = this._tail = record;\n        record._nextDup = null;\n        record._prevDup = null;\n      } else {\n        // TODO(vicb):\n        // assert(record.item ==  _head.item ||\n        //       record.item is num && record.item.isNaN && _head.item is num && _head.item.isNaN);\n        this._tail._nextDup = record;\n        record._prevDup = this._tail;\n        record._nextDup = null;\n        this._tail = record;\n      }\n    } // Returns a IterableChangeRecord_ having IterableChangeRecord_.trackById == trackById and\n    // IterableChangeRecord_.currentIndex >= atOrAfterIndex\n\n  }, {\n    key: \"get\",\n    value: function get(trackById, atOrAfterIndex) {\n      var record;\n\n      for (record = this._head; record !== null; record = record._nextDup) {\n        if ((atOrAfterIndex === null || atOrAfterIndex <= record.currentIndex) && Object.is(record.trackById, trackById)) {\n          return record;\n        }\n      }\n\n      return null;\n    }\n    /**\n     * Remove one {@link IterableChangeRecord_} from the list of duplicates.\n     *\n     * Returns whether the list of duplicates is empty.\n     */\n\n  }, {\n    key: \"remove\",\n    value: function remove(record) {\n      // TODO(vicb):\n      // assert(() {\n      //  // verify that the record being removed is in the list.\n      //  for (IterableChangeRecord_ cursor = _head; cursor != null; cursor = cursor._nextDup) {\n      //    if (identical(cursor, record)) return true;\n      //  }\n      //  return false;\n      //});\n      var prev = record._prevDup;\n      var next = record._nextDup;\n\n      if (prev === null) {\n        this._head = next;\n      } else {\n        prev._nextDup = next;\n      }\n\n      if (next === null) {\n        this._tail = prev;\n      } else {\n        next._prevDup = prev;\n      }\n\n      return this._head === null;\n    }\n  }]);\n\n  return _DuplicateItemRecordList;\n}();\n\nvar _DuplicateMap = /*#__PURE__*/function () {\n  function _DuplicateMap() {\n    _classCallCheck(this, _DuplicateMap);\n\n    this.map = new Map();\n  }\n\n  _createClass2(_DuplicateMap, [{\n    key: \"put\",\n    value: function put(record) {\n      var key = record.trackById;\n      var duplicates = this.map.get(key);\n\n      if (!duplicates) {\n        duplicates = new _DuplicateItemRecordList();\n        this.map.set(key, duplicates);\n      }\n\n      duplicates.add(record);\n    }\n    /**\n     * Retrieve the `value` using key. Because the IterableChangeRecord_ value may be one which we\n     * have already iterated over, we use the `atOrAfterIndex` to pretend it is not there.\n     *\n     * Use case: `[a, b, c, a, a]` if we are at index `3` which is the second `a` then asking if we\n     * have any more `a`s needs to return the second `a`.\n     */\n\n  }, {\n    key: \"get\",\n    value: function get(trackById, atOrAfterIndex) {\n      var key = trackById;\n      var recordList = this.map.get(key);\n      return recordList ? recordList.get(trackById, atOrAfterIndex) : null;\n    }\n    /**\n     * Removes a {@link IterableChangeRecord_} from the list of duplicates.\n     *\n     * The list of duplicates also is removed from the map if it gets empty.\n     */\n\n  }, {\n    key: \"remove\",\n    value: function remove(record) {\n      var key = record.trackById;\n      var recordList = this.map.get(key); // Remove the list of duplicates when it gets empty\n\n      if (recordList.remove(record)) {\n        this.map.delete(key);\n      }\n\n      return record;\n    }\n  }, {\n    key: \"isEmpty\",\n    get: function get() {\n      return this.map.size === 0;\n    }\n  }, {\n    key: \"clear\",\n    value: function clear() {\n      this.map.clear();\n    }\n  }]);\n\n  return _DuplicateMap;\n}();\n\nfunction getPreviousIndex(item, addRemoveOffset, moveOffsets) {\n  var previousIndex = item.previousIndex;\n  if (previousIndex === null) return previousIndex;\n  var moveOffset = 0;\n\n  if (moveOffsets && previousIndex < moveOffsets.length) {\n    moveOffset = moveOffsets[previousIndex];\n  }\n\n  return previousIndex + addRemoveOffset + moveOffset;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar DefaultKeyValueDifferFactory = /*#__PURE__*/function () {\n  function DefaultKeyValueDifferFactory() {\n    _classCallCheck(this, DefaultKeyValueDifferFactory);\n  }\n\n  _createClass2(DefaultKeyValueDifferFactory, [{\n    key: \"supports\",\n    value: function supports(obj) {\n      return obj instanceof Map || isJsObject(obj);\n    }\n  }, {\n    key: \"create\",\n    value: function create() {\n      return new DefaultKeyValueDiffer();\n    }\n  }]);\n\n  return DefaultKeyValueDifferFactory;\n}();\n\nvar DefaultKeyValueDiffer = /*#__PURE__*/function () {\n  function DefaultKeyValueDiffer() {\n    _classCallCheck(this, DefaultKeyValueDiffer);\n\n    this._records = new Map();\n    this._mapHead = null; // _appendAfter is used in the check loop\n\n    this._appendAfter = null;\n    this._previousMapHead = null;\n    this._changesHead = null;\n    this._changesTail = null;\n    this._additionsHead = null;\n    this._additionsTail = null;\n    this._removalsHead = null;\n    this._removalsTail = null;\n  }\n\n  _createClass2(DefaultKeyValueDiffer, [{\n    key: \"isDirty\",\n    get: function get() {\n      return this._additionsHead !== null || this._changesHead !== null || this._removalsHead !== null;\n    }\n  }, {\n    key: \"forEachItem\",\n    value: function forEachItem(fn) {\n      var record;\n\n      for (record = this._mapHead; record !== null; record = record._next) {\n        fn(record);\n      }\n    }\n  }, {\n    key: \"forEachPreviousItem\",\n    value: function forEachPreviousItem(fn) {\n      var record;\n\n      for (record = this._previousMapHead; record !== null; record = record._nextPrevious) {\n        fn(record);\n      }\n    }\n  }, {\n    key: \"forEachChangedItem\",\n    value: function forEachChangedItem(fn) {\n      var record;\n\n      for (record = this._changesHead; record !== null; record = record._nextChanged) {\n        fn(record);\n      }\n    }\n  }, {\n    key: \"forEachAddedItem\",\n    value: function forEachAddedItem(fn) {\n      var record;\n\n      for (record = this._additionsHead; record !== null; record = record._nextAdded) {\n        fn(record);\n      }\n    }\n  }, {\n    key: \"forEachRemovedItem\",\n    value: function forEachRemovedItem(fn) {\n      var record;\n\n      for (record = this._removalsHead; record !== null; record = record._nextRemoved) {\n        fn(record);\n      }\n    }\n  }, {\n    key: \"diff\",\n    value: function diff(map) {\n      if (!map) {\n        map = new Map();\n      } else if (!(map instanceof Map || isJsObject(map))) {\n        throw new Error(\"Error trying to diff '\".concat(stringify(map), \"'. Only maps and objects are allowed\"));\n      }\n\n      return this.check(map) ? this : null;\n    }\n  }, {\n    key: \"onDestroy\",\n    value: function onDestroy() {}\n    /**\n     * Check the current state of the map vs the previous.\n     * The algorithm is optimised for when the keys do no change.\n     */\n\n  }, {\n    key: \"check\",\n    value: function check(map) {\n      var _this8 = this;\n\n      this._reset();\n\n      var insertBefore = this._mapHead;\n      this._appendAfter = null;\n\n      this._forEach(map, function (value, key) {\n        if (insertBefore && insertBefore.key === key) {\n          _this8._maybeAddToChanges(insertBefore, value);\n\n          _this8._appendAfter = insertBefore;\n          insertBefore = insertBefore._next;\n        } else {\n          var record = _this8._getOrCreateRecordForKey(key, value);\n\n          insertBefore = _this8._insertBeforeOrAppend(insertBefore, record);\n        }\n      }); // Items remaining at the end of the list have been deleted\n\n\n      if (insertBefore) {\n        if (insertBefore._prev) {\n          insertBefore._prev._next = null;\n        }\n\n        this._removalsHead = insertBefore;\n\n        for (var record = insertBefore; record !== null; record = record._nextRemoved) {\n          if (record === this._mapHead) {\n            this._mapHead = null;\n          }\n\n          this._records.delete(record.key);\n\n          record._nextRemoved = record._next;\n          record.previousValue = record.currentValue;\n          record.currentValue = null;\n          record._prev = null;\n          record._next = null;\n        }\n      } // Make sure tails have no next records from previous runs\n\n\n      if (this._changesTail) this._changesTail._nextChanged = null;\n      if (this._additionsTail) this._additionsTail._nextAdded = null;\n      return this.isDirty;\n    }\n    /**\n     * Inserts a record before `before` or append at the end of the list when `before` is null.\n     *\n     * Notes:\n     * - This method appends at `this._appendAfter`,\n     * - This method updates `this._appendAfter`,\n     * - The return value is the new value for the insertion pointer.\n     */\n\n  }, {\n    key: \"_insertBeforeOrAppend\",\n    value: function _insertBeforeOrAppend(before, record) {\n      if (before) {\n        var prev = before._prev;\n        record._next = before;\n        record._prev = prev;\n        before._prev = record;\n\n        if (prev) {\n          prev._next = record;\n        }\n\n        if (before === this._mapHead) {\n          this._mapHead = record;\n        }\n\n        this._appendAfter = before;\n        return before;\n      }\n\n      if (this._appendAfter) {\n        this._appendAfter._next = record;\n        record._prev = this._appendAfter;\n      } else {\n        this._mapHead = record;\n      }\n\n      this._appendAfter = record;\n      return null;\n    }\n  }, {\n    key: \"_getOrCreateRecordForKey\",\n    value: function _getOrCreateRecordForKey(key, value) {\n      if (this._records.has(key)) {\n        var _record = this._records.get(key);\n\n        this._maybeAddToChanges(_record, value);\n\n        var prev = _record._prev;\n        var next = _record._next;\n\n        if (prev) {\n          prev._next = next;\n        }\n\n        if (next) {\n          next._prev = prev;\n        }\n\n        _record._next = null;\n        _record._prev = null;\n        return _record;\n      }\n\n      var record = new KeyValueChangeRecord_(key);\n\n      this._records.set(key, record);\n\n      record.currentValue = value;\n\n      this._addToAdditions(record);\n\n      return record;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_reset\",\n    value: function _reset() {\n      if (this.isDirty) {\n        var record; // let `_previousMapHead` contain the state of the map before the changes\n\n        this._previousMapHead = this._mapHead;\n\n        for (record = this._previousMapHead; record !== null; record = record._next) {\n          record._nextPrevious = record._next;\n        } // Update `record.previousValue` with the value of the item before the changes\n        // We need to update all changed items (that's those which have been added and changed)\n\n\n        for (record = this._changesHead; record !== null; record = record._nextChanged) {\n          record.previousValue = record.currentValue;\n        }\n\n        for (record = this._additionsHead; record != null; record = record._nextAdded) {\n          record.previousValue = record.currentValue;\n        }\n\n        this._changesHead = this._changesTail = null;\n        this._additionsHead = this._additionsTail = null;\n        this._removalsHead = null;\n      }\n    } // Add the record or a given key to the list of changes only when the value has actually changed\n\n  }, {\n    key: \"_maybeAddToChanges\",\n    value: function _maybeAddToChanges(record, newValue) {\n      if (!Object.is(newValue, record.currentValue)) {\n        record.previousValue = record.currentValue;\n        record.currentValue = newValue;\n\n        this._addToChanges(record);\n      }\n    }\n  }, {\n    key: \"_addToAdditions\",\n    value: function _addToAdditions(record) {\n      if (this._additionsHead === null) {\n        this._additionsHead = this._additionsTail = record;\n      } else {\n        this._additionsTail._nextAdded = record;\n        this._additionsTail = record;\n      }\n    }\n  }, {\n    key: \"_addToChanges\",\n    value: function _addToChanges(record) {\n      if (this._changesHead === null) {\n        this._changesHead = this._changesTail = record;\n      } else {\n        this._changesTail._nextChanged = record;\n        this._changesTail = record;\n      }\n    }\n    /** @internal */\n\n  }, {\n    key: \"_forEach\",\n    value: function _forEach(obj, fn) {\n      if (obj instanceof Map) {\n        obj.forEach(fn);\n      } else {\n        Object.keys(obj).forEach(function (k) {\n          return fn(obj[k], k);\n        });\n      }\n    }\n  }]);\n\n  return DefaultKeyValueDiffer;\n}();\n\nvar KeyValueChangeRecord_ = /*#__PURE__*/_createClass2(function KeyValueChangeRecord_(key) {\n  _classCallCheck(this, KeyValueChangeRecord_);\n\n  this.key = key;\n  this.previousValue = null;\n  this.currentValue = null;\n  /** @internal */\n\n  this._nextPrevious = null;\n  /** @internal */\n\n  this._next = null;\n  /** @internal */\n\n  this._prev = null;\n  /** @internal */\n\n  this._nextAdded = null;\n  /** @internal */\n\n  this._nextRemoved = null;\n  /** @internal */\n\n  this._nextChanged = null;\n});\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A repository of different iterable diffing strategies used by NgFor, NgClass, and others.\n *\n * @publicApi\n */\n\n\nvar IterableDiffers = /*#__PURE__*/function () {\n  function IterableDiffers(factories) {\n    _classCallCheck(this, IterableDiffers);\n\n    this.factories = factories;\n  }\n\n  _createClass2(IterableDiffers, [{\n    key: \"find\",\n    value: function find(iterable) {\n      var factory = this.factories.find(function (f) {\n        return f.supports(iterable);\n      });\n\n      if (factory != null) {\n        return factory;\n      } else {\n        throw new Error(\"Cannot find a differ supporting object '\".concat(iterable, \"' of type '\").concat(getTypeNameForDebugging(iterable), \"'\"));\n      }\n    }\n  }], [{\n    key: \"create\",\n    value: function create(factories, parent) {\n      if (parent != null) {\n        var copied = parent.factories.slice();\n        factories = factories.concat(copied);\n      }\n\n      return new IterableDiffers(factories);\n    }\n    /**\n     * Takes an array of {@link IterableDifferFactory} and returns a provider used to extend the\n     * inherited {@link IterableDiffers} instance with the provided factories and return a new\n     * {@link IterableDiffers} instance.\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * The following example shows how to extend an existing list of factories,\n     * which will only be applied to the injector for this component and its children.\n     * This step is all that's required to make a new {@link IterableDiffer} available.\n     *\n     * ```\n     * @Component({\n     *   viewProviders: [\n     *     IterableDiffers.extend([new ImmutableListDiffer()])\n     *   ]\n     * })\n     * ```\n     */\n\n  }, {\n    key: \"extend\",\n    value: function extend(factories) {\n      return {\n        provide: IterableDiffers,\n        useFactory: function useFactory(parent) {\n          if (!parent) {\n            // Typically would occur when calling IterableDiffers.extend inside of dependencies passed\n            // to\n            // bootstrap(), which would override default pipes instead of extending them.\n            throw new Error('Cannot extend IterableDiffers without a parent injector');\n          }\n\n          return IterableDiffers.create(factories, parent);\n        },\n        // Dependency technically isn't optional, but we can provide a better error message this way.\n        deps: [[IterableDiffers, new SkipSelf(), new Optional()]]\n      };\n    }\n  }]);\n\n  return IterableDiffers;\n}();\n/** @nocollapse */\n\n\nIterableDiffers.ɵprov = ɵɵdefineInjectable({\n  token: IterableDiffers,\n  providedIn: 'root',\n  factory: function factory() {\n    return new IterableDiffers([new DefaultIterableDifferFactory()]);\n  }\n});\n\nfunction getTypeNameForDebugging(type) {\n  return type['name'] || _typeof(type);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A repository of different Map diffing strategies used by NgClass, NgStyle, and others.\n *\n * @publicApi\n */\n\n\nvar KeyValueDiffers = /*#__PURE__*/function () {\n  function KeyValueDiffers(factories) {\n    _classCallCheck(this, KeyValueDiffers);\n\n    this.factories = factories;\n  }\n\n  _createClass2(KeyValueDiffers, [{\n    key: \"find\",\n    value: function find(kv) {\n      var factory = this.factories.find(function (f) {\n        return f.supports(kv);\n      });\n\n      if (factory) {\n        return factory;\n      }\n\n      throw new Error(\"Cannot find a differ supporting object '\".concat(kv, \"'\"));\n    }\n  }], [{\n    key: \"create\",\n    value: function create(factories, parent) {\n      if (parent) {\n        var copied = parent.factories.slice();\n        factories = factories.concat(copied);\n      }\n\n      return new KeyValueDiffers(factories);\n    }\n    /**\n     * Takes an array of {@link KeyValueDifferFactory} and returns a provider used to extend the\n     * inherited {@link KeyValueDiffers} instance with the provided factories and return a new\n     * {@link KeyValueDiffers} instance.\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * The following example shows how to extend an existing list of factories,\n     * which will only be applied to the injector for this component and its children.\n     * This step is all that's required to make a new {@link KeyValueDiffer} available.\n     *\n     * ```\n     * @Component({\n     *   viewProviders: [\n     *     KeyValueDiffers.extend([new ImmutableMapDiffer()])\n     *   ]\n     * })\n     * ```\n     */\n\n  }, {\n    key: \"extend\",\n    value: function extend(factories) {\n      return {\n        provide: KeyValueDiffers,\n        useFactory: function useFactory(parent) {\n          if (!parent) {\n            // Typically would occur when calling KeyValueDiffers.extend inside of dependencies passed\n            // to bootstrap(), which would override default pipes instead of extending them.\n            throw new Error('Cannot extend KeyValueDiffers without a parent injector');\n          }\n\n          return KeyValueDiffers.create(factories, parent);\n        },\n        // Dependency technically isn't optional, but we can provide a better error message this way.\n        deps: [[KeyValueDiffers, new SkipSelf(), new Optional()]]\n      };\n    }\n  }]);\n\n  return KeyValueDiffers;\n}();\n/** @nocollapse */\n\n\nKeyValueDiffers.ɵprov = ɵɵdefineInjectable({\n  token: KeyValueDiffers,\n  providedIn: 'root',\n  factory: function factory() {\n    return new KeyValueDiffers([new DefaultKeyValueDifferFactory()]);\n  }\n});\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nfunction collectNativeNodes(tView, lView, tNode, result) {\n  var isProjection = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : false;\n\n  while (tNode !== null) {\n    ngDevMode && assertTNodeType(tNode, 3\n    /* AnyRNode */\n    | 12\n    /* AnyContainer */\n    | 16\n    /* Projection */\n    | 32\n    /* Icu */\n    );\n    var lNode = lView[tNode.index];\n\n    if (lNode !== null) {\n      result.push(unwrapRNode(lNode));\n    } // A given lNode can represent either a native node or a LContainer (when it is a host of a\n    // ViewContainerRef). When we find a LContainer we need to descend into it to collect root nodes\n    // from the views in this container.\n\n\n    if (isLContainer(lNode)) {\n      for (var i = CONTAINER_HEADER_OFFSET; i < lNode.length; i++) {\n        var lViewInAContainer = lNode[i];\n        var lViewFirstChildTNode = lViewInAContainer[TVIEW].firstChild;\n\n        if (lViewFirstChildTNode !== null) {\n          collectNativeNodes(lViewInAContainer[TVIEW], lViewInAContainer, lViewFirstChildTNode, result);\n        }\n      }\n    }\n\n    var tNodeType = tNode.type;\n\n    if (tNodeType & 8\n    /* ElementContainer */\n    ) {\n      collectNativeNodes(tView, lView, tNode.child, result);\n    } else if (tNodeType & 32\n    /* Icu */\n    ) {\n      var nextRNode = icuContainerIterate(tNode, lView);\n      var rNode = void 0;\n\n      while (rNode = nextRNode()) {\n        result.push(rNode);\n      }\n    } else if (tNodeType & 16\n    /* Projection */\n    ) {\n      var componentView = lView[DECLARATION_COMPONENT_VIEW];\n      var componentHost = componentView[T_HOST];\n      var slotIdx = tNode.projection;\n      ngDevMode && assertDefined(componentHost.projection, 'Components with projection nodes (<ng-content>) must have projection slots defined.');\n      var nodesInSlot = componentHost.projection[slotIdx];\n\n      if (Array.isArray(nodesInSlot)) {\n        result.push.apply(result, _toConsumableArray(nodesInSlot));\n      } else {\n        var parentView = getLViewParent(componentView);\n        ngDevMode && assertDefined(parentView, 'Component views should always have a parent view (component\\'s host view)');\n        collectNativeNodes(parentView[TVIEW], parentView, nodesInSlot, result, true);\n      }\n    }\n\n    tNode = isProjection ? tNode.projectionNext : tNode.next;\n  }\n\n  return result;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ViewRef = /*#__PURE__*/function () {\n  function ViewRef(\n  /**\n   * This represents `LView` associated with the component when ViewRef is a ChangeDetectorRef.\n   *\n   * When ViewRef is created for a dynamic component, this also represents the `LView` for the\n   * component.\n   *\n   * For a \"regular\" ViewRef created for an embedded view, this is the `LView` for the embedded\n   * view.\n   *\n   * @internal\n   */\n  _lView,\n  /**\n   * This represents the `LView` associated with the point where `ChangeDetectorRef` was\n   * requested.\n   *\n   * This may be different from `_lView` if the `_cdRefInjectingView` is an embedded view.\n   */\n  _cdRefInjectingView) {\n    _classCallCheck(this, ViewRef);\n\n    this._lView = _lView;\n    this._cdRefInjectingView = _cdRefInjectingView;\n    this._appRef = null;\n    this._viewContainerRef = null;\n  }\n\n  _createClass2(ViewRef, [{\n    key: \"rootNodes\",\n    get: function get() {\n      var lView = this._lView;\n      var tView = lView[TVIEW];\n      return collectNativeNodes(tView, lView, tView.firstChild, []);\n    }\n  }, {\n    key: \"context\",\n    get: function get() {\n      return this._lView[CONTEXT];\n    }\n  }, {\n    key: \"destroyed\",\n    get: function get() {\n      return (this._lView[FLAGS] & 256\n      /* Destroyed */\n      ) === 256\n      /* Destroyed */\n      ;\n    }\n  }, {\n    key: \"destroy\",\n    value: function destroy() {\n      if (this._appRef) {\n        this._appRef.detachView(this);\n      } else if (this._viewContainerRef) {\n        var index = this._viewContainerRef.indexOf(this);\n\n        if (index > -1) {\n          this._viewContainerRef.detach(index);\n        }\n\n        this._viewContainerRef = null;\n      }\n\n      destroyLView(this._lView[TVIEW], this._lView);\n    }\n  }, {\n    key: \"onDestroy\",\n    value: function onDestroy(callback) {\n      storeCleanupWithContext(this._lView[TVIEW], this._lView, null, callback);\n    }\n    /**\n     * Marks a view and all of its ancestors dirty.\n     *\n     * It also triggers change detection by calling `scheduleTick` internally, which coalesces\n     * multiple `markForCheck` calls to into one change detection run.\n     *\n     * This can be used to ensure an {@link ChangeDetectionStrategy#OnPush OnPush} component is\n     * checked when it needs to be re-rendered but the two normal triggers haven't marked it\n     * dirty (i.e. inputs haven't changed and events haven't fired in the view).\n     *\n     * <!-- TODO: Add a link to a chapter on OnPush components -->\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * ```typescript\n     * @Component({\n     *   selector: 'my-app',\n     *   template: `Number of ticks: {{numberOfTicks}}`\n     *   changeDetection: ChangeDetectionStrategy.OnPush,\n     * })\n     * class AppComponent {\n     *   numberOfTicks = 0;\n     *\n     *   constructor(private ref: ChangeDetectorRef) {\n     *     setInterval(() => {\n     *       this.numberOfTicks++;\n     *       // the following is required, otherwise the view will not be updated\n     *       this.ref.markForCheck();\n     *     }, 1000);\n     *   }\n     * }\n     * ```\n     */\n\n  }, {\n    key: \"markForCheck\",\n    value: function markForCheck() {\n      markViewDirty(this._cdRefInjectingView || this._lView);\n    }\n    /**\n     * Detaches the view from the change detection tree.\n     *\n     * Detached views will not be checked during change detection runs until they are\n     * re-attached, even if they are dirty. `detach` can be used in combination with\n     * {@link ChangeDetectorRef#detectChanges detectChanges} to implement local change\n     * detection checks.\n     *\n     * <!-- TODO: Add a link to a chapter on detach/reattach/local digest -->\n     * <!-- TODO: Add a live demo once ref.detectChanges is merged into master -->\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * The following example defines a component with a large list of readonly data.\n     * Imagine the data changes constantly, many times per second. For performance reasons,\n     * we want to check and update the list every five seconds. We can do that by detaching\n     * the component's change detector and doing a local check every five seconds.\n     *\n     * ```typescript\n     * class DataProvider {\n     *   // in a real application the returned data will be different every time\n     *   get data() {\n     *     return [1,2,3,4,5];\n     *   }\n     * }\n     *\n     * @Component({\n     *   selector: 'giant-list',\n     *   template: `\n     *     <li *ngFor=\"let d of dataProvider.data\">Data {{d}}</li>\n     *   `,\n     * })\n     * class GiantList {\n     *   constructor(private ref: ChangeDetectorRef, private dataProvider: DataProvider) {\n     *     ref.detach();\n     *     setInterval(() => {\n     *       this.ref.detectChanges();\n     *     }, 5000);\n     *   }\n     * }\n     *\n     * @Component({\n     *   selector: 'app',\n     *   providers: [DataProvider],\n     *   template: `\n     *     <giant-list><giant-list>\n     *   `,\n     * })\n     * class App {\n     * }\n     * ```\n     */\n\n  }, {\n    key: \"detach\",\n    value: function detach() {\n      this._lView[FLAGS] &= ~128\n      /* Attached */\n      ;\n    }\n    /**\n     * Re-attaches a view to the change detection tree.\n     *\n     * This can be used to re-attach views that were previously detached from the tree\n     * using {@link ChangeDetectorRef#detach detach}. Views are attached to the tree by default.\n     *\n     * <!-- TODO: Add a link to a chapter on detach/reattach/local digest -->\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * The following example creates a component displaying `live` data. The component will detach\n     * its change detector from the main change detector tree when the component's live property\n     * is set to false.\n     *\n     * ```typescript\n     * class DataProvider {\n     *   data = 1;\n     *\n     *   constructor() {\n     *     setInterval(() => {\n     *       this.data = this.data * 2;\n     *     }, 500);\n     *   }\n     * }\n     *\n     * @Component({\n     *   selector: 'live-data',\n     *   inputs: ['live'],\n     *   template: 'Data: {{dataProvider.data}}'\n     * })\n     * class LiveData {\n     *   constructor(private ref: ChangeDetectorRef, private dataProvider: DataProvider) {}\n     *\n     *   set live(value) {\n     *     if (value) {\n     *       this.ref.reattach();\n     *     } else {\n     *       this.ref.detach();\n     *     }\n     *   }\n     * }\n     *\n     * @Component({\n     *   selector: 'my-app',\n     *   providers: [DataProvider],\n     *   template: `\n     *     Live Update: <input type=\"checkbox\" [(ngModel)]=\"live\">\n     *     <live-data [live]=\"live\"><live-data>\n     *   `,\n     * })\n     * class AppComponent {\n     *   live = true;\n     * }\n     * ```\n     */\n\n  }, {\n    key: \"reattach\",\n    value: function reattach() {\n      this._lView[FLAGS] |= 128\n      /* Attached */\n      ;\n    }\n    /**\n     * Checks the view and its children.\n     *\n     * This can also be used in combination with {@link ChangeDetectorRef#detach detach} to implement\n     * local change detection checks.\n     *\n     * <!-- TODO: Add a link to a chapter on detach/reattach/local digest -->\n     * <!-- TODO: Add a live demo once ref.detectChanges is merged into master -->\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * The following example defines a component with a large list of readonly data.\n     * Imagine, the data changes constantly, many times per second. For performance reasons,\n     * we want to check and update the list every five seconds.\n     *\n     * We can do that by detaching the component's change detector and doing a local change detection\n     * check every five seconds.\n     *\n     * See {@link ChangeDetectorRef#detach detach} for more information.\n     */\n\n  }, {\n    key: \"detectChanges\",\n    value: function detectChanges() {\n      detectChangesInternal(this._lView[TVIEW], this._lView, this.context);\n    }\n    /**\n     * Checks the change detector and its children, and throws if any changes are detected.\n     *\n     * This is used in development mode to verify that running change detection doesn't\n     * introduce other changes.\n     */\n\n  }, {\n    key: \"checkNoChanges\",\n    value: function checkNoChanges() {\n      checkNoChangesInternal(this._lView[TVIEW], this._lView, this.context);\n    }\n  }, {\n    key: \"attachToViewContainerRef\",\n    value: function attachToViewContainerRef(vcRef) {\n      if (this._appRef) {\n        throw new Error('This view is already attached directly to the ApplicationRef!');\n      }\n\n      this._viewContainerRef = vcRef;\n    }\n  }, {\n    key: \"detachFromAppRef\",\n    value: function detachFromAppRef() {\n      this._appRef = null;\n      renderDetachView(this._lView[TVIEW], this._lView);\n    }\n  }, {\n    key: \"attachToAppRef\",\n    value: function attachToAppRef(appRef) {\n      if (this._viewContainerRef) {\n        throw new Error('This view is already attached to a ViewContainer!');\n      }\n\n      this._appRef = appRef;\n    }\n  }]);\n\n  return ViewRef;\n}();\n/** @internal */\n\n\nvar RootViewRef = /*#__PURE__*/function (_ViewRef) {\n  _inherits(RootViewRef, _ViewRef);\n\n  var _super8 = _createSuper(RootViewRef);\n\n  function RootViewRef(_view) {\n    var _this9;\n\n    _classCallCheck(this, RootViewRef);\n\n    _this9 = _super8.call(this, _view);\n    _this9._view = _view;\n    return _this9;\n  }\n\n  _createClass2(RootViewRef, [{\n    key: \"detectChanges\",\n    value: function detectChanges() {\n      detectChangesInRootView(this._view);\n    }\n  }, {\n    key: \"checkNoChanges\",\n    value: function checkNoChanges() {\n      checkNoChangesInRootView(this._view);\n    }\n  }, {\n    key: \"context\",\n    get: function get() {\n      return null;\n    }\n  }]);\n\n  return RootViewRef;\n}(ViewRef);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar SWITCH_CHANGE_DETECTOR_REF_FACTORY__POST_R3__ = injectChangeDetectorRef;\nvar SWITCH_CHANGE_DETECTOR_REF_FACTORY__PRE_R3__ = noop;\nvar SWITCH_CHANGE_DETECTOR_REF_FACTORY = SWITCH_CHANGE_DETECTOR_REF_FACTORY__PRE_R3__;\n/**\n * Base class that provides change detection functionality.\n * A change-detection tree collects all views that are to be checked for changes.\n * Use the methods to add and remove views from the tree, initiate change-detection,\n * and explicitly mark views as _dirty_, meaning that they have changed and need to be re-rendered.\n *\n * @see [Using change detection hooks](guide/lifecycle-hooks#using-change-detection-hooks)\n * @see [Defining custom change detection](guide/lifecycle-hooks#defining-custom-change-detection)\n *\n * @usageNotes\n *\n * The following examples demonstrate how to modify default change-detection behavior\n * to perform explicit detection when needed.\n *\n * ### Use `markForCheck()` with `CheckOnce` strategy\n *\n * The following example sets the `OnPush` change-detection strategy for a component\n * (`CheckOnce`, rather than the default `CheckAlways`), then forces a second check\n * after an interval. See [live demo](http://plnkr.co/edit/GC512b?p=preview).\n *\n * <code-example path=\"core/ts/change_detect/change-detection.ts\"\n * region=\"mark-for-check\"></code-example>\n *\n * ### Detach change detector to limit how often check occurs\n *\n * The following example defines a component with a large list of read-only data\n * that is expected to change constantly, many times per second.\n * To improve performance, we want to check and update the list\n * less often than the changes actually occur. To do that, we detach\n * the component's change detector and perform an explicit local check every five seconds.\n *\n * <code-example path=\"core/ts/change_detect/change-detection.ts\" region=\"detach\"></code-example>\n *\n *\n * ### Reattaching a detached component\n *\n * The following example creates a component displaying live data.\n * The component detaches its change detector from the main change detector tree\n * when the `live` property is set to false, and reattaches it when the property\n * becomes true.\n *\n * <code-example path=\"core/ts/change_detect/change-detection.ts\" region=\"reattach\"></code-example>\n *\n * @publicApi\n */\n\nvar ChangeDetectorRef = /*#__PURE__*/_createClass2(function ChangeDetectorRef() {\n  _classCallCheck(this, ChangeDetectorRef);\n});\n/**\n * @internal\n * @nocollapse\n */\n\n\nChangeDetectorRef.__NG_ELEMENT_ID__ = SWITCH_CHANGE_DETECTOR_REF_FACTORY;\n/**\n * This marker is need so that the JIT compiler can correctly identify this class as special.\n *\n * @internal\n * @nocollapse\n */\n\nChangeDetectorRef.__ChangeDetectorRef__ = true;\n/** Returns a ChangeDetectorRef (a.k.a. a ViewRef) */\n\nfunction injectChangeDetectorRef() {\n  var isPipe = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;\n  return createViewRef(getCurrentTNode(), getLView(), isPipe);\n}\n/**\n * Creates a ViewRef and stores it on the injector as ChangeDetectorRef (public alias).\n *\n * @param tNode The node that is requesting a ChangeDetectorRef\n * @param lView The view to which the node belongs\n * @param isPipe Whether the view is being injected into a pipe.\n * @returns The ChangeDetectorRef to use\n */\n\n\nfunction createViewRef(tNode, lView, isPipe) {\n  // `isComponentView` will be true for Component and Directives (but not for Pipes).\n  // See https://github.com/angular/angular/pull/33072 for proper fix\n  var isComponentView = !isPipe && isComponentHost(tNode);\n\n  if (isComponentView) {\n    // The LView represents the location where the component is declared.\n    // Instead we want the LView for the component View and so we need to look it up.\n    var componentView = getComponentLViewByIndex(tNode.index, lView); // look down\n\n    return new ViewRef(componentView, componentView);\n  } else if (tNode.type & (3\n  /* AnyRNode */\n  | 12\n  /* AnyContainer */\n  | 32\n  /* Icu */\n  )) {\n    // The LView represents the location where the injection is requested from.\n    // We need to locate the containing LView (in case where the `lView` is an embedded view)\n    var hostComponentView = lView[DECLARATION_COMPONENT_VIEW]; // look up\n\n    return new ViewRef(hostComponentView, lView);\n  }\n\n  return null;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Structural diffing for `Object`s and `Map`s.\n */\n\n\nvar keyValDiff = [new DefaultKeyValueDifferFactory()];\n/**\n * Structural diffing for `Iterable` types such as `Array`s.\n */\n\nvar iterableDiff = [new DefaultIterableDifferFactory()];\nvar defaultIterableDiffers = new IterableDiffers(iterableDiff);\nvar defaultKeyValueDiffers = new KeyValueDiffers(keyValDiff);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar SWITCH_TEMPLATE_REF_FACTORY__POST_R3__ = injectTemplateRef;\nvar SWITCH_TEMPLATE_REF_FACTORY__PRE_R3__ = noop;\nvar SWITCH_TEMPLATE_REF_FACTORY = SWITCH_TEMPLATE_REF_FACTORY__PRE_R3__;\n/**\n * Represents an embedded template that can be used to instantiate embedded views.\n * To instantiate embedded views based on a template, use the `ViewContainerRef`\n * method `createEmbeddedView()`.\n *\n * Access a `TemplateRef` instance by placing a directive on an `<ng-template>`\n * element (or directive prefixed with `*`). The `TemplateRef` for the embedded view\n * is injected into the constructor of the directive,\n * using the `TemplateRef` token.\n *\n * You can also use a `Query` to find a `TemplateRef` associated with\n * a component or a directive.\n *\n * @see `ViewContainerRef`\n * @see [Navigate the Component Tree with DI](guide/dependency-injection-navtree)\n *\n * @publicApi\n */\n\nvar TemplateRef = /*#__PURE__*/_createClass2(function TemplateRef() {\n  _classCallCheck(this, TemplateRef);\n});\n/**\n * @internal\n * @nocollapse\n */\n\n\nTemplateRef.__NG_ELEMENT_ID__ = SWITCH_TEMPLATE_REF_FACTORY;\nvar ViewEngineTemplateRef = TemplateRef;\n\nvar R3TemplateRef = /*#__PURE__*/function (_ViewEngineTemplateRe) {\n  _inherits(TemplateRef, _ViewEngineTemplateRe);\n\n  var _super9 = _createSuper(TemplateRef);\n\n  function TemplateRef(_declarationLView, _declarationTContainer, elementRef) {\n    var _this10;\n\n    _classCallCheck(this, TemplateRef);\n\n    _this10 = _super9.call(this);\n    _this10._declarationLView = _declarationLView;\n    _this10._declarationTContainer = _declarationTContainer;\n    _this10.elementRef = elementRef;\n    return _this10;\n  }\n\n  _createClass2(TemplateRef, [{\n    key: \"createEmbeddedView\",\n    value: function createEmbeddedView(context) {\n      var embeddedTView = this._declarationTContainer.tViews;\n      var embeddedLView = createLView(this._declarationLView, embeddedTView, context, 16\n      /* CheckAlways */\n      , null, embeddedTView.declTNode, null, null, null, null);\n      var declarationLContainer = this._declarationLView[this._declarationTContainer.index];\n      ngDevMode && assertLContainer(declarationLContainer);\n      embeddedLView[DECLARATION_LCONTAINER] = declarationLContainer;\n      var declarationViewLQueries = this._declarationLView[QUERIES];\n\n      if (declarationViewLQueries !== null) {\n        embeddedLView[QUERIES] = declarationViewLQueries.createEmbeddedView(embeddedTView);\n      }\n\n      renderView(embeddedTView, embeddedLView, context);\n      return new ViewRef(embeddedLView);\n    }\n  }]);\n\n  return TemplateRef;\n}(ViewEngineTemplateRef);\n/**\n * Creates a TemplateRef given a node.\n *\n * @returns The TemplateRef instance to use\n */\n\n\nfunction injectTemplateRef() {\n  return createTemplateRef(getCurrentTNode(), getLView());\n}\n/**\n * Creates a TemplateRef and stores it on the injector.\n *\n * @param hostTNode The node on which a TemplateRef is requested\n * @param hostLView The `LView` to which the node belongs\n * @returns The TemplateRef instance or null if we can't create a TemplateRef on a given node type\n */\n\n\nfunction createTemplateRef(hostTNode, hostLView) {\n  if (hostTNode.type & 4\n  /* Container */\n  ) {\n    ngDevMode && assertDefined(hostTNode.tViews, 'TView must be allocated');\n    return new R3TemplateRef(hostLView, hostTNode, createElementRef(hostTNode, hostLView));\n  }\n\n  return null;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Represents an instance of an `NgModule` created by an `NgModuleFactory`.\n * Provides access to the `NgModule` instance and related objects.\n *\n * @publicApi\n */\n\n\nvar NgModuleRef = /*#__PURE__*/_createClass2(function NgModuleRef() {\n  _classCallCheck(this, NgModuleRef);\n});\n/**\n * @publicApi\n */\n\n\nvar NgModuleFactory = /*#__PURE__*/_createClass2(function NgModuleFactory() {\n  _classCallCheck(this, NgModuleFactory);\n});\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar SWITCH_VIEW_CONTAINER_REF_FACTORY__POST_R3__ = injectViewContainerRef;\nvar SWITCH_VIEW_CONTAINER_REF_FACTORY__PRE_R3__ = noop;\nvar SWITCH_VIEW_CONTAINER_REF_FACTORY = SWITCH_VIEW_CONTAINER_REF_FACTORY__PRE_R3__;\n/**\n * Represents a container where one or more views can be attached to a component.\n *\n * Can contain *host views* (created by instantiating a\n * component with the `createComponent()` method), and *embedded views*\n * (created by instantiating a `TemplateRef` with the `createEmbeddedView()` method).\n *\n * A view container instance can contain other view containers,\n * creating a [view hierarchy](guide/glossary#view-tree).\n *\n * @see `ComponentRef`\n * @see `EmbeddedViewRef`\n *\n * @publicApi\n */\n\nvar ViewContainerRef = /*#__PURE__*/_createClass2(function ViewContainerRef() {\n  _classCallCheck(this, ViewContainerRef);\n});\n/**\n * @internal\n * @nocollapse\n */\n\n\nViewContainerRef.__NG_ELEMENT_ID__ = SWITCH_VIEW_CONTAINER_REF_FACTORY;\n/**\n * Creates a ViewContainerRef and stores it on the injector. Or, if the ViewContainerRef\n * already exists, retrieves the existing ViewContainerRef.\n *\n * @returns The ViewContainerRef instance to use\n */\n\nfunction injectViewContainerRef() {\n  var previousTNode = getCurrentTNode();\n  return createContainerRef(previousTNode, getLView());\n}\n\nvar VE_ViewContainerRef = ViewContainerRef;\n\nvar R3ViewContainerRef = /*#__PURE__*/function (_VE_ViewContainerRef) {\n  _inherits(ViewContainerRef, _VE_ViewContainerRef);\n\n  var _super10 = _createSuper(ViewContainerRef);\n\n  function ViewContainerRef(_lContainer, _hostTNode, _hostLView) {\n    var _this11;\n\n    _classCallCheck(this, ViewContainerRef);\n\n    _this11 = _super10.call(this);\n    _this11._lContainer = _lContainer;\n    _this11._hostTNode = _hostTNode;\n    _this11._hostLView = _hostLView;\n    return _this11;\n  }\n\n  _createClass2(ViewContainerRef, [{\n    key: \"element\",\n    get: function get() {\n      return createElementRef(this._hostTNode, this._hostLView);\n    }\n  }, {\n    key: \"injector\",\n    get: function get() {\n      return new NodeInjector(this._hostTNode, this._hostLView);\n    }\n    /** @deprecated No replacement */\n\n  }, {\n    key: \"parentInjector\",\n    get: function get() {\n      var parentLocation = getParentInjectorLocation(this._hostTNode, this._hostLView);\n\n      if (hasParentInjector(parentLocation)) {\n        var parentView = getParentInjectorView(parentLocation, this._hostLView);\n        var injectorIndex = getParentInjectorIndex(parentLocation);\n        ngDevMode && assertNodeInjector(parentView, injectorIndex);\n        var parentTNode = parentView[TVIEW].data[injectorIndex + 8\n        /* TNODE */\n        ];\n        return new NodeInjector(parentTNode, parentView);\n      } else {\n        return new NodeInjector(null, this._hostLView);\n      }\n    }\n  }, {\n    key: \"clear\",\n    value: function clear() {\n      while (this.length > 0) {\n        this.remove(this.length - 1);\n      }\n    }\n  }, {\n    key: \"get\",\n    value: function get(index) {\n      var viewRefs = getViewRefs(this._lContainer);\n      return viewRefs !== null && viewRefs[index] || null;\n    }\n  }, {\n    key: \"length\",\n    get: function get() {\n      return this._lContainer.length - CONTAINER_HEADER_OFFSET;\n    }\n  }, {\n    key: \"createEmbeddedView\",\n    value: function createEmbeddedView(templateRef, context, index) {\n      var viewRef = templateRef.createEmbeddedView(context || {});\n      this.insert(viewRef, index);\n      return viewRef;\n    }\n  }, {\n    key: \"createComponent\",\n    value: function createComponent(componentFactory, index, injector, projectableNodes, ngModuleRef) {\n      var contextInjector = injector || this.parentInjector;\n\n      if (!ngModuleRef && componentFactory.ngModule == null && contextInjector) {\n        // DO NOT REFACTOR. The code here used to have a `value || undefined` expression\n        // which seems to cause internal google apps to fail. This is documented in the\n        // following internal bug issue: go/b/142967802\n        var result = contextInjector.get(NgModuleRef, null);\n\n        if (result) {\n          ngModuleRef = result;\n        }\n      }\n\n      var componentRef = componentFactory.create(contextInjector, projectableNodes, undefined, ngModuleRef);\n      this.insert(componentRef.hostView, index);\n      return componentRef;\n    }\n  }, {\n    key: \"insert\",\n    value: function insert(viewRef, index) {\n      var lView = viewRef._lView;\n      var tView = lView[TVIEW];\n\n      if (ngDevMode && viewRef.destroyed) {\n        throw new Error('Cannot insert a destroyed View in a ViewContainer!');\n      }\n\n      if (viewAttachedToContainer(lView)) {\n        // If view is already attached, detach it first so we clean up references appropriately.\n        var prevIdx = this.indexOf(viewRef); // A view might be attached either to this or a different container. The `prevIdx` for\n        // those cases will be:\n        // equal to -1 for views attached to this ViewContainerRef\n        // >= 0 for views attached to a different ViewContainerRef\n\n        if (prevIdx !== -1) {\n          this.detach(prevIdx);\n        } else {\n          var prevLContainer = lView[PARENT];\n          ngDevMode && assertEqual(isLContainer(prevLContainer), true, 'An attached view should have its PARENT point to a container.'); // We need to re-create a R3ViewContainerRef instance since those are not stored on\n          // LView (nor anywhere else).\n\n          var prevVCRef = new R3ViewContainerRef(prevLContainer, prevLContainer[T_HOST], prevLContainer[PARENT]);\n          prevVCRef.detach(prevVCRef.indexOf(viewRef));\n        }\n      } // Logical operation of adding `LView` to `LContainer`\n\n\n      var adjustedIdx = this._adjustIndex(index);\n\n      var lContainer = this._lContainer;\n      insertView(tView, lView, lContainer, adjustedIdx); // Physical operation of adding the DOM nodes.\n\n      var beforeNode = getBeforeNodeForView(adjustedIdx, lContainer);\n      var renderer = lView[RENDERER];\n      var parentRNode = nativeParentNode(renderer, lContainer[NATIVE]);\n\n      if (parentRNode !== null) {\n        addViewToContainer(tView, lContainer[T_HOST], renderer, lView, parentRNode, beforeNode);\n      }\n\n      viewRef.attachToViewContainerRef(this);\n      addToArray(getOrCreateViewRefs(lContainer), adjustedIdx, viewRef);\n      return viewRef;\n    }\n  }, {\n    key: \"move\",\n    value: function move(viewRef, newIndex) {\n      if (ngDevMode && viewRef.destroyed) {\n        throw new Error('Cannot move a destroyed View in a ViewContainer!');\n      }\n\n      return this.insert(viewRef, newIndex);\n    }\n  }, {\n    key: \"indexOf\",\n    value: function indexOf(viewRef) {\n      var viewRefsArr = getViewRefs(this._lContainer);\n      return viewRefsArr !== null ? viewRefsArr.indexOf(viewRef) : -1;\n    }\n  }, {\n    key: \"remove\",\n    value: function remove(index) {\n      var adjustedIdx = this._adjustIndex(index, -1);\n\n      var detachedView = detachView(this._lContainer, adjustedIdx);\n\n      if (detachedView) {\n        // Before destroying the view, remove it from the container's array of `ViewRef`s.\n        // This ensures the view container length is updated before calling\n        // `destroyLView`, which could recursively call view container methods that\n        // rely on an accurate container length.\n        // (e.g. a method on this view container being called by a child directive's OnDestroy\n        // lifecycle hook)\n        removeFromArray(getOrCreateViewRefs(this._lContainer), adjustedIdx);\n        destroyLView(detachedView[TVIEW], detachedView);\n      }\n    }\n  }, {\n    key: \"detach\",\n    value: function detach(index) {\n      var adjustedIdx = this._adjustIndex(index, -1);\n\n      var view = detachView(this._lContainer, adjustedIdx);\n      var wasDetached = view && removeFromArray(getOrCreateViewRefs(this._lContainer), adjustedIdx) != null;\n      return wasDetached ? new ViewRef(view) : null;\n    }\n  }, {\n    key: \"_adjustIndex\",\n    value: function _adjustIndex(index) {\n      var shift = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;\n\n      if (index == null) {\n        return this.length + shift;\n      }\n\n      if (ngDevMode) {\n        assertGreaterThan(index, -1, \"ViewRef index must be positive, got \".concat(index)); // +1 because it's legal to insert at the end.\n\n        assertLessThan(index, this.length + 1 + shift, 'index');\n      }\n\n      return index;\n    }\n  }]);\n\n  return ViewContainerRef;\n}(VE_ViewContainerRef);\n\nfunction getViewRefs(lContainer) {\n  return lContainer[VIEW_REFS];\n}\n\nfunction getOrCreateViewRefs(lContainer) {\n  return lContainer[VIEW_REFS] || (lContainer[VIEW_REFS] = []);\n}\n/**\n * Creates a ViewContainerRef and stores it on the injector.\n *\n * @param ViewContainerRefToken The ViewContainerRef type\n * @param ElementRefToken The ElementRef type\n * @param hostTNode The node that is requesting a ViewContainerRef\n * @param hostLView The view to which the node belongs\n * @returns The ViewContainerRef instance to use\n */\n\n\nfunction createContainerRef(hostTNode, hostLView) {\n  ngDevMode && assertTNodeType(hostTNode, 12\n  /* AnyContainer */\n  | 3\n  /* AnyRNode */\n  );\n  var lContainer;\n  var slotValue = hostLView[hostTNode.index];\n\n  if (isLContainer(slotValue)) {\n    // If the host is a container, we don't need to create a new LContainer\n    lContainer = slotValue;\n  } else {\n    var commentNode; // If the host is an element container, the native host element is guaranteed to be a\n    // comment and we can reuse that comment as anchor element for the new LContainer.\n    // The comment node in question is already part of the DOM structure so we don't need to append\n    // it again.\n\n    if (hostTNode.type & 8\n    /* ElementContainer */\n    ) {\n      commentNode = unwrapRNode(slotValue);\n    } else {\n      // If the host is a regular element, we have to insert a comment node manually which will\n      // be used as an anchor when inserting elements. In this specific case we use low-level DOM\n      // manipulation to insert it.\n      var renderer = hostLView[RENDERER];\n      ngDevMode && ngDevMode.rendererCreateComment++;\n      commentNode = renderer.createComment(ngDevMode ? 'container' : '');\n      var hostNative = getNativeByTNode(hostTNode, hostLView);\n      var parentOfHostNative = nativeParentNode(renderer, hostNative);\n      nativeInsertBefore(renderer, parentOfHostNative, commentNode, nativeNextSibling(renderer, hostNative), false);\n    }\n\n    hostLView[hostTNode.index] = lContainer = createLContainer(slotValue, hostLView, commentNode, hostTNode);\n    addToViewTree(hostLView, lContainer);\n  }\n\n  return new R3ViewContainerRef(lContainer, hostTNode, hostLView);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction expressionChangedAfterItHasBeenCheckedError(context, oldValue, currValue, isFirstCheck) {\n  var msg = \"ExpressionChangedAfterItHasBeenCheckedError: Expression has changed after it was checked. Previous value: '\".concat(oldValue, \"'. Current value: '\").concat(currValue, \"'.\");\n\n  if (isFirstCheck) {\n    msg += \" It seems like the view has been created after its parent and its children have been dirty checked.\" + \" Has it been created in a change detection hook ?\";\n  }\n\n  return viewDebugError(msg, context);\n}\n\nfunction viewWrappedDebugError(err, context) {\n  if (!(err instanceof Error)) {\n    // errors that are not Error instances don't have a stack,\n    // so it is ok to wrap them into a new Error object...\n    err = new Error(err.toString());\n  }\n\n  _addDebugContext(err, context);\n\n  return err;\n}\n\nfunction viewDebugError(msg, context) {\n  var err = new Error(msg);\n\n  _addDebugContext(err, context);\n\n  return err;\n}\n\nfunction _addDebugContext(err, context) {\n  err[ERROR_DEBUG_CONTEXT] = context;\n  err[ERROR_LOGGER] = context.logError.bind(context);\n}\n\nfunction isViewDebugError(err) {\n  return !!getDebugContext(err);\n}\n\nfunction viewDestroyedError(action) {\n  return new Error(\"ViewDestroyedError: Attempt to use a destroyed view: \".concat(action));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// Called before each cycle of a view's check to detect whether this is in the\n// initState for which we need to call ngOnInit, ngAfterContentInit or ngAfterViewInit\n// lifecycle methods. Returns true if this check cycle should call lifecycle\n// methods.\n\n\nfunction shiftInitState(view, priorInitState, newInitState) {\n  // Only update the InitState if we are currently in the prior state.\n  // For example, only move into CallingInit if we are in BeforeInit. Only\n  // move into CallingContentInit if we are in CallingInit. Normally this will\n  // always be true because of how checkCycle is called in checkAndUpdateView.\n  // However, if checkAndUpdateView is called recursively or if an exception is\n  // thrown while checkAndUpdateView is running, checkAndUpdateView starts over\n  // from the beginning. This ensures the state is monotonically increasing,\n  // terminating in the AfterInit state, which ensures the Init methods are called\n  // at least once and only once.\n  var state = view.state;\n  var initState = state & 1792\n  /* InitState_Mask */\n  ;\n\n  if (initState === priorInitState) {\n    view.state = state & ~1792\n    /* InitState_Mask */\n    | newInitState;\n    view.initIndex = -1;\n    return true;\n  }\n\n  return initState === newInitState;\n} // Returns true if the lifecycle init method should be called for the node with\n// the given init index.\n\n\nfunction shouldCallLifecycleInitHook(view, initState, index) {\n  if ((view.state & 1792\n  /* InitState_Mask */\n  ) === initState && view.initIndex <= index) {\n    view.initIndex = index + 1;\n    return true;\n  }\n\n  return false;\n}\n/**\n * Node instance data.\n *\n * We have a separate type per NodeType to save memory\n * (TextData | ElementData | ProviderData | PureExpressionData | QueryList<any>)\n *\n * To keep our code monomorphic,\n * we prohibit using `NodeData` directly but enforce the use of accessors (`asElementData`, ...).\n * This way, no usage site can get a `NodeData` from view.nodes and then use it for different\n * purposes.\n */\n\n\nvar NodeData = /*#__PURE__*/_createClass2(function NodeData() {\n  _classCallCheck(this, NodeData);\n});\n/**\n * Accessor for view.nodes, enforcing that every usage site stays monomorphic.\n */\n\n\nfunction asTextData(view, index) {\n  return view.nodes[index];\n}\n/**\n * Accessor for view.nodes, enforcing that every usage site stays monomorphic.\n */\n\n\nfunction asElementData(view, index) {\n  return view.nodes[index];\n}\n/**\n * Accessor for view.nodes, enforcing that every usage site stays monomorphic.\n */\n\n\nfunction asProviderData(view, index) {\n  return view.nodes[index];\n}\n/**\n * Accessor for view.nodes, enforcing that every usage site stays monomorphic.\n */\n\n\nfunction asPureExpressionData(view, index) {\n  return view.nodes[index];\n}\n/**\n * Accessor for view.nodes, enforcing that every usage site stays monomorphic.\n */\n\n\nfunction asQueryList(view, index) {\n  return view.nodes[index];\n}\n\nvar DebugContext = /*#__PURE__*/_createClass2(function DebugContext() {\n  _classCallCheck(this, DebugContext);\n});\n/**\n * This object is used to prevent cycles in the source files and to have a place where\n * debug mode can hook it. It is lazily filled when `isDevMode` is known.\n */\n\n\nvar Services = {\n  setCurrentNode: undefined,\n  createRootView: undefined,\n  createEmbeddedView: undefined,\n  createComponentView: undefined,\n  createNgModuleRef: undefined,\n  overrideProvider: undefined,\n  overrideComponentView: undefined,\n  clearOverrides: undefined,\n  checkAndUpdateView: undefined,\n  checkNoChangesView: undefined,\n  destroyView: undefined,\n  resolveDep: undefined,\n  createDebugContext: undefined,\n  handleEvent: undefined,\n  updateDirectives: undefined,\n  updateRenderer: undefined,\n  dirtyParentQueries: undefined\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar NOOP = function NOOP() {};\n\nvar _tokenKeyCache = new Map();\n\nfunction tokenKey(token) {\n  var key = _tokenKeyCache.get(token);\n\n  if (!key) {\n    key = stringify(token) + '_' + _tokenKeyCache.size;\n\n    _tokenKeyCache.set(token, key);\n  }\n\n  return key;\n}\n\nfunction unwrapValue(view, nodeIdx, bindingIdx, value) {\n  if (WrappedValue.isWrapped(value)) {\n    value = WrappedValue.unwrap(value);\n    var globalBindingIdx = view.def.nodes[nodeIdx].bindingIndex + bindingIdx;\n    var oldValue = WrappedValue.unwrap(view.oldValues[globalBindingIdx]);\n    view.oldValues[globalBindingIdx] = new WrappedValue(oldValue);\n  }\n\n  return value;\n}\n\nvar UNDEFINED_RENDERER_TYPE_ID = '$$undefined';\nvar EMPTY_RENDERER_TYPE_ID = '$$empty'; // Attention: this function is called as top level function.\n// Putting any logic in here will destroy closure tree shaking!\n\nfunction createRendererType2(values) {\n  return {\n    id: UNDEFINED_RENDERER_TYPE_ID,\n    styles: values.styles,\n    encapsulation: values.encapsulation,\n    data: values.data\n  };\n}\n\nvar _renderCompCount$1 = 0;\n\nfunction resolveRendererType2(type) {\n  if (type && type.id === UNDEFINED_RENDERER_TYPE_ID) {\n    // first time we see this RendererType2. Initialize it...\n    var isFilled = type.encapsulation != null && type.encapsulation !== ViewEncapsulation$1.None || type.styles.length || Object.keys(type.data).length;\n\n    if (isFilled) {\n      type.id = \"c\".concat(_renderCompCount$1++);\n    } else {\n      type.id = EMPTY_RENDERER_TYPE_ID;\n    }\n  }\n\n  if (type && type.id === EMPTY_RENDERER_TYPE_ID) {\n    type = null;\n  }\n\n  return type || null;\n}\n\nfunction checkBinding(view, def, bindingIdx, value) {\n  var oldValues = view.oldValues;\n\n  if (view.state & 2\n  /* FirstCheck */\n  || !Object.is(oldValues[def.bindingIndex + bindingIdx], value)) {\n    return true;\n  }\n\n  return false;\n}\n\nfunction checkAndUpdateBinding(view, def, bindingIdx, value) {\n  if (checkBinding(view, def, bindingIdx, value)) {\n    view.oldValues[def.bindingIndex + bindingIdx] = value;\n    return true;\n  }\n\n  return false;\n}\n\nfunction checkBindingNoChanges(view, def, bindingIdx, value) {\n  var oldValue = view.oldValues[def.bindingIndex + bindingIdx];\n\n  if (view.state & 1\n  /* BeforeFirstCheck */\n  || !devModeEqual(oldValue, value)) {\n    var bindingName = def.bindings[bindingIdx].name;\n    throw expressionChangedAfterItHasBeenCheckedError(Services.createDebugContext(view, def.nodeIndex), \"\".concat(bindingName, \": \").concat(oldValue), \"\".concat(bindingName, \": \").concat(value), (view.state & 1\n    /* BeforeFirstCheck */\n    ) !== 0);\n  }\n}\n\nfunction markParentViewsForCheck(view) {\n  var currView = view;\n\n  while (currView) {\n    if (currView.def.flags & 2\n    /* OnPush */\n    ) {\n      currView.state |= 8\n      /* ChecksEnabled */\n      ;\n    }\n\n    currView = currView.viewContainerParent || currView.parent;\n  }\n}\n\nfunction markParentViewsForCheckProjectedViews(view, endView) {\n  var currView = view;\n\n  while (currView && currView !== endView) {\n    currView.state |= 64\n    /* CheckProjectedViews */\n    ;\n    currView = currView.viewContainerParent || currView.parent;\n  }\n}\n\nfunction dispatchEvent(view, nodeIndex, eventName, event) {\n  try {\n    var nodeDef = view.def.nodes[nodeIndex];\n    var startView = nodeDef.flags & 33554432\n    /* ComponentView */\n    ? asElementData(view, nodeIndex).componentView : view;\n    markParentViewsForCheck(startView);\n    return Services.handleEvent(view, nodeIndex, eventName, event);\n  } catch (e) {\n    // Attention: Don't rethrow, as it would cancel Observable subscriptions!\n    view.root.errorHandler.handleError(e);\n  }\n}\n\nfunction declaredViewContainer(view) {\n  if (view.parent) {\n    var parentView = view.parent;\n    return asElementData(parentView, view.parentNodeDef.nodeIndex);\n  }\n\n  return null;\n}\n/**\n * for component views, this is the host element.\n * for embedded views, this is the index of the parent node\n * that contains the view container.\n */\n\n\nfunction viewParentEl(view) {\n  var parentView = view.parent;\n\n  if (parentView) {\n    return view.parentNodeDef.parent;\n  } else {\n    return null;\n  }\n}\n\nfunction renderNode(view, def) {\n  switch (def.flags & 201347067\n  /* Types */\n  ) {\n    case 1\n    /* TypeElement */\n    :\n      return asElementData(view, def.nodeIndex).renderElement;\n\n    case 2\n    /* TypeText */\n    :\n      return asTextData(view, def.nodeIndex).renderText;\n  }\n}\n\nfunction elementEventFullName(target, name) {\n  return target ? \"\".concat(target, \":\").concat(name) : name;\n}\n\nfunction isComponentView(view) {\n  return !!view.parent && !!(view.parentNodeDef.flags & 32768\n  /* Component */\n  );\n}\n\nfunction isEmbeddedView(view) {\n  return !!view.parent && !(view.parentNodeDef.flags & 32768\n  /* Component */\n  );\n}\n\nfunction filterQueryId(queryId) {\n  return 1 << queryId % 32;\n}\n\nfunction splitMatchedQueriesDsl(matchedQueriesDsl) {\n  var matchedQueries = {};\n  var matchedQueryIds = 0;\n  var references = {};\n\n  if (matchedQueriesDsl) {\n    matchedQueriesDsl.forEach(function (_ref) {\n      var _ref2 = _slicedToArray(_ref, 2),\n          queryId = _ref2[0],\n          valueType = _ref2[1];\n\n      if (typeof queryId === 'number') {\n        matchedQueries[queryId] = valueType;\n        matchedQueryIds |= filterQueryId(queryId);\n      } else {\n        references[queryId] = valueType;\n      }\n    });\n  }\n\n  return {\n    matchedQueries: matchedQueries,\n    references: references,\n    matchedQueryIds: matchedQueryIds\n  };\n}\n\nfunction splitDepsDsl(deps, sourceName) {\n  return deps.map(function (value) {\n    var token;\n    var flags;\n\n    if (Array.isArray(value)) {\n      var _value2 = _slicedToArray(value, 2);\n\n      flags = _value2[0];\n      token = _value2[1];\n    } else {\n      flags = 0\n      /* None */\n      ;\n      token = value;\n    }\n\n    if (token && (typeof token === 'function' || _typeof(token) === 'object') && sourceName) {\n      Object.defineProperty(token, SOURCE, {\n        value: sourceName,\n        configurable: true\n      });\n    }\n\n    return {\n      flags: flags,\n      token: token,\n      tokenKey: tokenKey(token)\n    };\n  });\n}\n\nfunction getParentRenderElement(view, renderHost, def) {\n  var renderParent = def.renderParent;\n\n  if (renderParent) {\n    if ((renderParent.flags & 1\n    /* TypeElement */\n    ) === 0 || (renderParent.flags & 33554432\n    /* ComponentView */\n    ) === 0 || renderParent.element.componentRendererType && (renderParent.element.componentRendererType.encapsulation === ViewEncapsulation$1.ShadowDom || // TODO(FW-2290): remove the `encapsulation === 1` fallback logic in v12.\n    renderParent.element.componentRendererType.encapsulation === 1)) {\n      // only children of non components, or children of components with native encapsulation should\n      // be attached.\n      return asElementData(view, def.renderParent.nodeIndex).renderElement;\n    }\n  } else {\n    return renderHost;\n  }\n}\n\nvar DEFINITION_CACHE = new WeakMap();\n\nfunction resolveDefinition(factory) {\n  var value = DEFINITION_CACHE.get(factory);\n\n  if (!value) {\n    value = factory(function () {\n      return NOOP;\n    });\n    value.factory = factory;\n    DEFINITION_CACHE.set(factory, value);\n  }\n\n  return value;\n}\n\nfunction rootRenderNodes(view) {\n  var renderNodes = [];\n  visitRootRenderNodes(view, 0\n  /* Collect */\n  , undefined, undefined, renderNodes);\n  return renderNodes;\n}\n\nfunction visitRootRenderNodes(view, action, parentNode, nextSibling, target) {\n  // We need to re-compute the parent node in case the nodes have been moved around manually\n  if (action === 3\n  /* RemoveChild */\n  ) {\n    parentNode = view.renderer.parentNode(renderNode(view, view.def.lastRenderRootNode));\n  }\n\n  visitSiblingRenderNodes(view, action, 0, view.def.nodes.length - 1, parentNode, nextSibling, target);\n}\n\nfunction visitSiblingRenderNodes(view, action, startIndex, endIndex, parentNode, nextSibling, target) {\n  for (var i = startIndex; i <= endIndex; i++) {\n    var nodeDef = view.def.nodes[i];\n\n    if (nodeDef.flags & (1\n    /* TypeElement */\n    | 2\n    /* TypeText */\n    | 8\n    /* TypeNgContent */\n    )) {\n      visitRenderNode(view, nodeDef, action, parentNode, nextSibling, target);\n    } // jump to next sibling\n\n\n    i += nodeDef.childCount;\n  }\n}\n\nfunction visitProjectedRenderNodes(view, ngContentIndex, action, parentNode, nextSibling, target) {\n  var compView = view;\n\n  while (compView && !isComponentView(compView)) {\n    compView = compView.parent;\n  }\n\n  var hostView = compView.parent;\n  var hostElDef = viewParentEl(compView);\n  var startIndex = hostElDef.nodeIndex + 1;\n  var endIndex = hostElDef.nodeIndex + hostElDef.childCount;\n\n  for (var i = startIndex; i <= endIndex; i++) {\n    var nodeDef = hostView.def.nodes[i];\n\n    if (nodeDef.ngContentIndex === ngContentIndex) {\n      visitRenderNode(hostView, nodeDef, action, parentNode, nextSibling, target);\n    } // jump to next sibling\n\n\n    i += nodeDef.childCount;\n  }\n\n  if (!hostView.parent) {\n    // a root view\n    var projectedNodes = view.root.projectableNodes[ngContentIndex];\n\n    if (projectedNodes) {\n      for (var _i6 = 0; _i6 < projectedNodes.length; _i6++) {\n        execRenderNodeAction(view, projectedNodes[_i6], action, parentNode, nextSibling, target);\n      }\n    }\n  }\n}\n\nfunction visitRenderNode(view, nodeDef, action, parentNode, nextSibling, target) {\n  if (nodeDef.flags & 8\n  /* TypeNgContent */\n  ) {\n    visitProjectedRenderNodes(view, nodeDef.ngContent.index, action, parentNode, nextSibling, target);\n  } else {\n    var rn = renderNode(view, nodeDef);\n\n    if (action === 3\n    /* RemoveChild */\n    && nodeDef.flags & 33554432\n    /* ComponentView */\n    && nodeDef.bindingFlags & 48\n    /* CatSyntheticProperty */\n    ) {\n      // Note: we might need to do both actions.\n      if (nodeDef.bindingFlags & 16\n      /* SyntheticProperty */\n      ) {\n        execRenderNodeAction(view, rn, action, parentNode, nextSibling, target);\n      }\n\n      if (nodeDef.bindingFlags & 32\n      /* SyntheticHostProperty */\n      ) {\n        var compView = asElementData(view, nodeDef.nodeIndex).componentView;\n        execRenderNodeAction(compView, rn, action, parentNode, nextSibling, target);\n      }\n    } else {\n      execRenderNodeAction(view, rn, action, parentNode, nextSibling, target);\n    }\n\n    if (nodeDef.flags & 16777216\n    /* EmbeddedViews */\n    ) {\n      var embeddedViews = asElementData(view, nodeDef.nodeIndex).viewContainer._embeddedViews;\n\n      for (var k = 0; k < embeddedViews.length; k++) {\n        visitRootRenderNodes(embeddedViews[k], action, parentNode, nextSibling, target);\n      }\n    }\n\n    if (nodeDef.flags & 1\n    /* TypeElement */\n    && !nodeDef.element.name) {\n      visitSiblingRenderNodes(view, action, nodeDef.nodeIndex + 1, nodeDef.nodeIndex + nodeDef.childCount, parentNode, nextSibling, target);\n    }\n  }\n}\n\nfunction execRenderNodeAction(view, renderNode, action, parentNode, nextSibling, target) {\n  var renderer = view.renderer;\n\n  switch (action) {\n    case 1\n    /* AppendChild */\n    :\n      renderer.appendChild(parentNode, renderNode);\n      break;\n\n    case 2\n    /* InsertBefore */\n    :\n      renderer.insertBefore(parentNode, renderNode, nextSibling);\n      break;\n\n    case 3\n    /* RemoveChild */\n    :\n      renderer.removeChild(parentNode, renderNode);\n      break;\n\n    case 0\n    /* Collect */\n    :\n      target.push(renderNode);\n      break;\n  }\n}\n\nvar NS_PREFIX_RE = /^:([^:]+):(.+)$/;\n\nfunction splitNamespace(name) {\n  if (name[0] === ':') {\n    var match = name.match(NS_PREFIX_RE);\n    return [match[1], match[2]];\n  }\n\n  return ['', name];\n}\n\nfunction calcBindingFlags(bindings) {\n  var flags = 0;\n\n  for (var i = 0; i < bindings.length; i++) {\n    flags |= bindings[i].flags;\n  }\n\n  return flags;\n}\n\nfunction interpolate(valueCount, constAndInterp) {\n  var result = '';\n\n  for (var i = 0; i < valueCount * 2; i = i + 2) {\n    result = result + constAndInterp[i] + _toStringWithNull(constAndInterp[i + 1]);\n  }\n\n  return result + constAndInterp[valueCount * 2];\n}\n\nfunction inlineInterpolate(valueCount, c0, a1, c1, a2, c2, a3, c3, a4, c4, a5, c5, a6, c6, a7, c7, a8, c8, a9, c9) {\n  switch (valueCount) {\n    case 1:\n      return c0 + _toStringWithNull(a1) + c1;\n\n    case 2:\n      return c0 + _toStringWithNull(a1) + c1 + _toStringWithNull(a2) + c2;\n\n    case 3:\n      return c0 + _toStringWithNull(a1) + c1 + _toStringWithNull(a2) + c2 + _toStringWithNull(a3) + c3;\n\n    case 4:\n      return c0 + _toStringWithNull(a1) + c1 + _toStringWithNull(a2) + c2 + _toStringWithNull(a3) + c3 + _toStringWithNull(a4) + c4;\n\n    case 5:\n      return c0 + _toStringWithNull(a1) + c1 + _toStringWithNull(a2) + c2 + _toStringWithNull(a3) + c3 + _toStringWithNull(a4) + c4 + _toStringWithNull(a5) + c5;\n\n    case 6:\n      return c0 + _toStringWithNull(a1) + c1 + _toStringWithNull(a2) + c2 + _toStringWithNull(a3) + c3 + _toStringWithNull(a4) + c4 + _toStringWithNull(a5) + c5 + _toStringWithNull(a6) + c6;\n\n    case 7:\n      return c0 + _toStringWithNull(a1) + c1 + _toStringWithNull(a2) + c2 + _toStringWithNull(a3) + c3 + _toStringWithNull(a4) + c4 + _toStringWithNull(a5) + c5 + _toStringWithNull(a6) + c6 + _toStringWithNull(a7) + c7;\n\n    case 8:\n      return c0 + _toStringWithNull(a1) + c1 + _toStringWithNull(a2) + c2 + _toStringWithNull(a3) + c3 + _toStringWithNull(a4) + c4 + _toStringWithNull(a5) + c5 + _toStringWithNull(a6) + c6 + _toStringWithNull(a7) + c7 + _toStringWithNull(a8) + c8;\n\n    case 9:\n      return c0 + _toStringWithNull(a1) + c1 + _toStringWithNull(a2) + c2 + _toStringWithNull(a3) + c3 + _toStringWithNull(a4) + c4 + _toStringWithNull(a5) + c5 + _toStringWithNull(a6) + c6 + _toStringWithNull(a7) + c7 + _toStringWithNull(a8) + c8 + _toStringWithNull(a9) + c9;\n\n    default:\n      throw new Error(\"Does not support more than 9 expressions\");\n  }\n}\n\nfunction _toStringWithNull(v) {\n  return v != null ? v.toString() : '';\n}\n\nvar EMPTY_ARRAY$4 = [];\nvar EMPTY_MAP = {};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar UNDEFINED_VALUE = {};\nvar InjectorRefTokenKey = tokenKey(Injector);\nvar INJECTORRefTokenKey = tokenKey(INJECTOR$1);\nvar NgModuleRefTokenKey = tokenKey(NgModuleRef);\n\nfunction moduleProvideDef(flags, token, value, deps) {\n  // Need to resolve forwardRefs as e.g. for `useValue` we\n  // lowered the expression and then stopped evaluating it,\n  // i.e. also didn't unwrap it.\n  value = resolveForwardRef(value);\n  var depDefs = splitDepsDsl(deps, stringify(token));\n  return {\n    // will bet set by the module definition\n    index: -1,\n    deps: depDefs,\n    flags: flags,\n    token: token,\n    value: value\n  };\n}\n\nfunction moduleDef(providers) {\n  var providersByKey = {};\n  var modules = [];\n  var scope = null;\n\n  for (var i = 0; i < providers.length; i++) {\n    var provider = providers[i];\n\n    if (provider.token === INJECTOR_SCOPE) {\n      scope = provider.value;\n    }\n\n    if (provider.flags & 1073741824\n    /* TypeNgModule */\n    ) {\n      modules.push(provider.token);\n    }\n\n    provider.index = i;\n    providersByKey[tokenKey(provider.token)] = provider;\n  }\n\n  return {\n    // Will be filled later...\n    factory: null,\n    providersByKey: providersByKey,\n    providers: providers,\n    modules: modules,\n    scope: scope\n  };\n}\n\nfunction initNgModule(data) {\n  var def = data._def;\n  var providers = data._providers = newArray(def.providers.length);\n\n  for (var i = 0; i < def.providers.length; i++) {\n    var provDef = def.providers[i];\n\n    if (!(provDef.flags & 4096\n    /* LazyProvider */\n    )) {\n      // Make sure the provider has not been already initialized outside this loop.\n      if (providers[i] === undefined) {\n        providers[i] = _createProviderInstance(data, provDef);\n      }\n    }\n  }\n}\n\nfunction resolveNgModuleDep(data, depDef) {\n  var notFoundValue = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : Injector.THROW_IF_NOT_FOUND;\n  var former = setCurrentInjector(data);\n\n  try {\n    if (depDef.flags & 8\n    /* Value */\n    ) {\n      return depDef.token;\n    }\n\n    if (depDef.flags & 2\n    /* Optional */\n    ) {\n      notFoundValue = null;\n    }\n\n    if (depDef.flags & 1\n    /* SkipSelf */\n    ) {\n      return data._parent.get(depDef.token, notFoundValue);\n    }\n\n    var _tokenKey = depDef.tokenKey;\n\n    switch (_tokenKey) {\n      case InjectorRefTokenKey:\n      case INJECTORRefTokenKey:\n      case NgModuleRefTokenKey:\n        return data;\n    }\n\n    var _providerDef = data._def.providersByKey[_tokenKey];\n    var injectableDef;\n\n    if (_providerDef) {\n      var providerInstance = data._providers[_providerDef.index];\n\n      if (providerInstance === undefined) {\n        providerInstance = data._providers[_providerDef.index] = _createProviderInstance(data, _providerDef);\n      }\n\n      return providerInstance === UNDEFINED_VALUE ? undefined : providerInstance;\n    } else if ((injectableDef = getInjectableDef(depDef.token)) && targetsModule(data, injectableDef)) {\n      var index = data._providers.length;\n      data._def.providers[index] = data._def.providersByKey[depDef.tokenKey] = {\n        flags: 1024\n        /* TypeFactoryProvider */\n        | 4096\n        /* LazyProvider */\n        ,\n        value: injectableDef.factory,\n        deps: [],\n        index: index,\n        token: depDef.token\n      };\n      data._providers[index] = UNDEFINED_VALUE;\n      return data._providers[index] = _createProviderInstance(data, data._def.providersByKey[depDef.tokenKey]);\n    } else if (depDef.flags & 4\n    /* Self */\n    ) {\n      return notFoundValue;\n    }\n\n    return data._parent.get(depDef.token, notFoundValue);\n  } finally {\n    setCurrentInjector(former);\n  }\n}\n\nfunction moduleTransitivelyPresent(ngModule, scope) {\n  return ngModule._def.modules.indexOf(scope) > -1;\n}\n\nfunction targetsModule(ngModule, def) {\n  var providedIn = def.providedIn;\n  return providedIn != null && (providedIn === 'any' || providedIn === ngModule._def.scope || moduleTransitivelyPresent(ngModule, providedIn));\n}\n\nfunction _createProviderInstance(ngModule, providerDef) {\n  var injectable;\n\n  switch (providerDef.flags & 201347067\n  /* Types */\n  ) {\n    case 512\n    /* TypeClassProvider */\n    :\n      injectable = _createClass(ngModule, providerDef.value, providerDef.deps);\n      break;\n\n    case 1024\n    /* TypeFactoryProvider */\n    :\n      injectable = _callFactory(ngModule, providerDef.value, providerDef.deps);\n      break;\n\n    case 2048\n    /* TypeUseExistingProvider */\n    :\n      injectable = resolveNgModuleDep(ngModule, providerDef.deps[0]);\n      break;\n\n    case 256\n    /* TypeValueProvider */\n    :\n      injectable = providerDef.value;\n      break;\n  } // The read of `ngOnDestroy` here is slightly expensive as it's megamorphic, so it should be\n  // avoided if possible. The sequence of checks here determines whether ngOnDestroy needs to be\n  // checked. It might not if the `injectable` isn't an object or if NodeFlags.OnDestroy is already\n  // set (ngOnDestroy was detected statically).\n\n\n  if (injectable !== UNDEFINED_VALUE && injectable !== null && _typeof(injectable) === 'object' && !(providerDef.flags & 131072\n  /* OnDestroy */\n  ) && typeof injectable.ngOnDestroy === 'function') {\n    providerDef.flags |= 131072\n    /* OnDestroy */\n    ;\n  }\n\n  return injectable === undefined ? UNDEFINED_VALUE : injectable;\n}\n\nfunction _createClass(ngModule, ctor, deps) {\n  var len = deps.length;\n\n  switch (len) {\n    case 0:\n      return new ctor();\n\n    case 1:\n      return new ctor(resolveNgModuleDep(ngModule, deps[0]));\n\n    case 2:\n      return new ctor(resolveNgModuleDep(ngModule, deps[0]), resolveNgModuleDep(ngModule, deps[1]));\n\n    case 3:\n      return new ctor(resolveNgModuleDep(ngModule, deps[0]), resolveNgModuleDep(ngModule, deps[1]), resolveNgModuleDep(ngModule, deps[2]));\n\n    default:\n      var depValues = [];\n\n      for (var i = 0; i < len; i++) {\n        depValues[i] = resolveNgModuleDep(ngModule, deps[i]);\n      }\n\n      return _construct(ctor, depValues);\n  }\n}\n\nfunction _callFactory(ngModule, factory, deps) {\n  var len = deps.length;\n\n  switch (len) {\n    case 0:\n      return factory();\n\n    case 1:\n      return factory(resolveNgModuleDep(ngModule, deps[0]));\n\n    case 2:\n      return factory(resolveNgModuleDep(ngModule, deps[0]), resolveNgModuleDep(ngModule, deps[1]));\n\n    case 3:\n      return factory(resolveNgModuleDep(ngModule, deps[0]), resolveNgModuleDep(ngModule, deps[1]), resolveNgModuleDep(ngModule, deps[2]));\n\n    default:\n      var depValues = [];\n\n      for (var i = 0; i < len; i++) {\n        depValues[i] = resolveNgModuleDep(ngModule, deps[i]);\n      }\n\n      return factory.apply(void 0, depValues);\n  }\n}\n\nfunction callNgModuleLifecycle(ngModule, lifecycles) {\n  var def = ngModule._def;\n  var destroyed = new Set();\n\n  for (var i = 0; i < def.providers.length; i++) {\n    var provDef = def.providers[i];\n\n    if (provDef.flags & 131072\n    /* OnDestroy */\n    ) {\n      var instance = ngModule._providers[i];\n\n      if (instance && instance !== UNDEFINED_VALUE) {\n        var onDestroy = instance.ngOnDestroy;\n\n        if (typeof onDestroy === 'function' && !destroyed.has(instance)) {\n          onDestroy.apply(instance);\n          destroyed.add(instance);\n        }\n      }\n    }\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction attachEmbeddedView(parentView, elementData, viewIndex, view) {\n  var embeddedViews = elementData.viewContainer._embeddedViews;\n\n  if (viewIndex === null || viewIndex === undefined) {\n    viewIndex = embeddedViews.length;\n  }\n\n  view.viewContainerParent = parentView;\n  addToArray(embeddedViews, viewIndex, view);\n  attachProjectedView(elementData, view);\n  Services.dirtyParentQueries(view);\n  var prevView = viewIndex > 0 ? embeddedViews[viewIndex - 1] : null;\n  renderAttachEmbeddedView(elementData, prevView, view);\n}\n\nfunction attachProjectedView(vcElementData, view) {\n  var dvcElementData = declaredViewContainer(view);\n\n  if (!dvcElementData || dvcElementData === vcElementData || view.state & 16\n  /* IsProjectedView */\n  ) {\n    return;\n  } // Note: For performance reasons, we\n  // - add a view to template._projectedViews only 1x throughout its lifetime,\n  //   and remove it not until the view is destroyed.\n  //   (hard, as when a parent view is attached/detached we would need to attach/detach all\n  //    nested projected views as well, even across component boundaries).\n  // - don't track the insertion order of views in the projected views array\n  //   (hard, as when the views of the same template are inserted different view containers)\n\n\n  view.state |= 16\n  /* IsProjectedView */\n  ;\n  var projectedViews = dvcElementData.template._projectedViews;\n\n  if (!projectedViews) {\n    projectedViews = dvcElementData.template._projectedViews = [];\n  }\n\n  projectedViews.push(view); // Note: we are changing the NodeDef here as we cannot calculate\n  // the fact whether a template is used for projection during compilation.\n\n  markNodeAsProjectedTemplate(view.parent.def, view.parentNodeDef);\n}\n\nfunction markNodeAsProjectedTemplate(viewDef, nodeDef) {\n  if (nodeDef.flags & 4\n  /* ProjectedTemplate */\n  ) {\n    return;\n  }\n\n  viewDef.nodeFlags |= 4\n  /* ProjectedTemplate */\n  ;\n  nodeDef.flags |= 4\n  /* ProjectedTemplate */\n  ;\n  var parentNodeDef = nodeDef.parent;\n\n  while (parentNodeDef) {\n    parentNodeDef.childFlags |= 4\n    /* ProjectedTemplate */\n    ;\n    parentNodeDef = parentNodeDef.parent;\n  }\n}\n\nfunction detachEmbeddedView(elementData, viewIndex) {\n  var embeddedViews = elementData.viewContainer._embeddedViews;\n\n  if (viewIndex == null || viewIndex >= embeddedViews.length) {\n    viewIndex = embeddedViews.length - 1;\n  }\n\n  if (viewIndex < 0) {\n    return null;\n  }\n\n  var view = embeddedViews[viewIndex];\n  view.viewContainerParent = null;\n  removeFromArray(embeddedViews, viewIndex); // See attachProjectedView for why we don't update projectedViews here.\n\n  Services.dirtyParentQueries(view);\n  renderDetachView$1(view);\n  return view;\n}\n\nfunction detachProjectedView(view) {\n  if (!(view.state & 16\n  /* IsProjectedView */\n  )) {\n    return;\n  }\n\n  var dvcElementData = declaredViewContainer(view);\n\n  if (dvcElementData) {\n    var projectedViews = dvcElementData.template._projectedViews;\n\n    if (projectedViews) {\n      removeFromArray(projectedViews, projectedViews.indexOf(view));\n      Services.dirtyParentQueries(view);\n    }\n  }\n}\n\nfunction moveEmbeddedView(elementData, oldViewIndex, newViewIndex) {\n  var embeddedViews = elementData.viewContainer._embeddedViews;\n  var view = embeddedViews[oldViewIndex];\n  removeFromArray(embeddedViews, oldViewIndex);\n\n  if (newViewIndex == null) {\n    newViewIndex = embeddedViews.length;\n  }\n\n  addToArray(embeddedViews, newViewIndex, view); // Note: Don't need to change projectedViews as the order in there\n  // as always invalid...\n\n  Services.dirtyParentQueries(view);\n  renderDetachView$1(view);\n  var prevView = newViewIndex > 0 ? embeddedViews[newViewIndex - 1] : null;\n  renderAttachEmbeddedView(elementData, prevView, view);\n  return view;\n}\n\nfunction renderAttachEmbeddedView(elementData, prevView, view) {\n  var prevRenderNode = prevView ? renderNode(prevView, prevView.def.lastRenderRootNode) : elementData.renderElement;\n  var parentNode = view.renderer.parentNode(prevRenderNode);\n  var nextSibling = view.renderer.nextSibling(prevRenderNode); // Note: We can't check if `nextSibling` is present, as on WebWorkers it will always be!\n  // However, browsers automatically do `appendChild` when there is no `nextSibling`.\n\n  visitRootRenderNodes(view, 2\n  /* InsertBefore */\n  , parentNode, nextSibling, undefined);\n}\n\nfunction renderDetachView$1(view) {\n  visitRootRenderNodes(view, 3\n  /* RemoveChild */\n  , null, null, undefined);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar EMPTY_CONTEXT = {}; // Attention: this function is called as top level function.\n// Putting any logic in here will destroy closure tree shaking!\n\nfunction createComponentFactory(selector, componentType, viewDefFactory, inputs, outputs, ngContentSelectors) {\n  return new ComponentFactory_(selector, componentType, viewDefFactory, inputs, outputs, ngContentSelectors);\n}\n\nfunction getComponentViewDefinitionFactory(componentFactory) {\n  return componentFactory.viewDefFactory;\n}\n\nvar ComponentFactory_ = /*#__PURE__*/function (_ComponentFactory2) {\n  _inherits(ComponentFactory_, _ComponentFactory2);\n\n  var _super11 = _createSuper(ComponentFactory_);\n\n  function ComponentFactory_(selector, componentType, viewDefFactory, _inputs, _outputs, ngContentSelectors) {\n    var _this12;\n\n    _classCallCheck(this, ComponentFactory_);\n\n    // Attention: this ctor is called as top level function.\n    // Putting any logic in here will destroy closure tree shaking!\n    _this12 = _super11.call(this);\n    _this12.selector = selector;\n    _this12.componentType = componentType;\n    _this12._inputs = _inputs;\n    _this12._outputs = _outputs;\n    _this12.ngContentSelectors = ngContentSelectors;\n    _this12.viewDefFactory = viewDefFactory;\n    return _this12;\n  }\n\n  _createClass2(ComponentFactory_, [{\n    key: \"inputs\",\n    get: function get() {\n      var inputsArr = [];\n      var inputs = this._inputs;\n\n      for (var propName in inputs) {\n        var templateName = inputs[propName];\n        inputsArr.push({\n          propName: propName,\n          templateName: templateName\n        });\n      }\n\n      return inputsArr;\n    }\n  }, {\n    key: \"outputs\",\n    get: function get() {\n      var outputsArr = [];\n\n      for (var propName in this._outputs) {\n        var templateName = this._outputs[propName];\n        outputsArr.push({\n          propName: propName,\n          templateName: templateName\n        });\n      }\n\n      return outputsArr;\n    }\n    /**\n     * Creates a new component.\n     */\n\n  }, {\n    key: \"create\",\n    value: function create(injector, projectableNodes, rootSelectorOrNode, ngModule) {\n      if (!ngModule) {\n        throw new Error('ngModule should be provided');\n      }\n\n      var viewDef = resolveDefinition(this.viewDefFactory);\n      var componentNodeIndex = viewDef.nodes[0].element.componentProvider.nodeIndex;\n      var view = Services.createRootView(injector, projectableNodes || [], rootSelectorOrNode, viewDef, ngModule, EMPTY_CONTEXT);\n      var component = asProviderData(view, componentNodeIndex).instance;\n\n      if (rootSelectorOrNode) {\n        view.renderer.setAttribute(asElementData(view, 0).renderElement, 'ng-version', VERSION.full);\n      }\n\n      return new ComponentRef_(view, new ViewRef_(view), component);\n    }\n  }]);\n\n  return ComponentFactory_;\n}(ComponentFactory);\n\nvar ComponentRef_ = /*#__PURE__*/function (_ComponentRef) {\n  _inherits(ComponentRef_, _ComponentRef);\n\n  var _super12 = _createSuper(ComponentRef_);\n\n  function ComponentRef_(_view, _viewRef, _component) {\n    var _this13;\n\n    _classCallCheck(this, ComponentRef_);\n\n    _this13 = _super12.call(this);\n    _this13._view = _view;\n    _this13._viewRef = _viewRef;\n    _this13._component = _component;\n    _this13._elDef = _this13._view.def.nodes[0];\n    _this13.hostView = _viewRef;\n    _this13.changeDetectorRef = _viewRef;\n    _this13.instance = _component;\n    return _this13;\n  }\n\n  _createClass2(ComponentRef_, [{\n    key: \"location\",\n    get: function get() {\n      return new ElementRef(asElementData(this._view, this._elDef.nodeIndex).renderElement);\n    }\n  }, {\n    key: \"injector\",\n    get: function get() {\n      return new Injector_(this._view, this._elDef);\n    }\n  }, {\n    key: \"componentType\",\n    get: function get() {\n      return this._component.constructor;\n    }\n  }, {\n    key: \"destroy\",\n    value: function destroy() {\n      this._viewRef.destroy();\n    }\n  }, {\n    key: \"onDestroy\",\n    value: function onDestroy(callback) {\n      this._viewRef.onDestroy(callback);\n    }\n  }]);\n\n  return ComponentRef_;\n}(ComponentRef);\n\nfunction createViewContainerData(view, elDef, elData) {\n  return new ViewContainerRef_(view, elDef, elData);\n}\n\nvar ViewContainerRef_ = /*#__PURE__*/function () {\n  function ViewContainerRef_(_view, _elDef, _data) {\n    _classCallCheck(this, ViewContainerRef_);\n\n    this._view = _view;\n    this._elDef = _elDef;\n    this._data = _data;\n    /**\n     * @internal\n     */\n\n    this._embeddedViews = [];\n  }\n\n  _createClass2(ViewContainerRef_, [{\n    key: \"element\",\n    get: function get() {\n      return new ElementRef(this._data.renderElement);\n    }\n  }, {\n    key: \"injector\",\n    get: function get() {\n      return new Injector_(this._view, this._elDef);\n    }\n    /** @deprecated No replacement */\n\n  }, {\n    key: \"parentInjector\",\n    get: function get() {\n      var view = this._view;\n      var elDef = this._elDef.parent;\n\n      while (!elDef && view) {\n        elDef = viewParentEl(view);\n        view = view.parent;\n      }\n\n      return view ? new Injector_(view, elDef) : new Injector_(this._view, null);\n    }\n  }, {\n    key: \"clear\",\n    value: function clear() {\n      var len = this._embeddedViews.length;\n\n      for (var i = len - 1; i >= 0; i--) {\n        var view = detachEmbeddedView(this._data, i);\n        Services.destroyView(view);\n      }\n    }\n  }, {\n    key: \"get\",\n    value: function get(index) {\n      var view = this._embeddedViews[index];\n\n      if (view) {\n        var ref = new ViewRef_(view);\n        ref.attachToViewContainerRef(this);\n        return ref;\n      }\n\n      return null;\n    }\n  }, {\n    key: \"length\",\n    get: function get() {\n      return this._embeddedViews.length;\n    }\n  }, {\n    key: \"createEmbeddedView\",\n    value: function createEmbeddedView(templateRef, context, index) {\n      var viewRef = templateRef.createEmbeddedView(context || {});\n      this.insert(viewRef, index);\n      return viewRef;\n    }\n  }, {\n    key: \"createComponent\",\n    value: function createComponent(componentFactory, index, injector, projectableNodes, ngModuleRef) {\n      var contextInjector = injector || this.parentInjector;\n\n      if (!ngModuleRef && !(componentFactory instanceof ComponentFactoryBoundToModule)) {\n        ngModuleRef = contextInjector.get(NgModuleRef);\n      }\n\n      var componentRef = componentFactory.create(contextInjector, projectableNodes, undefined, ngModuleRef);\n      this.insert(componentRef.hostView, index);\n      return componentRef;\n    }\n  }, {\n    key: \"insert\",\n    value: function insert(viewRef, index) {\n      if (viewRef.destroyed) {\n        throw new Error('Cannot insert a destroyed View in a ViewContainer!');\n      }\n\n      var viewRef_ = viewRef;\n      var viewData = viewRef_._view;\n      attachEmbeddedView(this._view, this._data, index, viewData);\n      viewRef_.attachToViewContainerRef(this);\n      return viewRef;\n    }\n  }, {\n    key: \"move\",\n    value: function move(viewRef, currentIndex) {\n      if (viewRef.destroyed) {\n        throw new Error('Cannot move a destroyed View in a ViewContainer!');\n      }\n\n      var previousIndex = this._embeddedViews.indexOf(viewRef._view);\n\n      moveEmbeddedView(this._data, previousIndex, currentIndex);\n      return viewRef;\n    }\n  }, {\n    key: \"indexOf\",\n    value: function indexOf(viewRef) {\n      return this._embeddedViews.indexOf(viewRef._view);\n    }\n  }, {\n    key: \"remove\",\n    value: function remove(index) {\n      var viewData = detachEmbeddedView(this._data, index);\n\n      if (viewData) {\n        Services.destroyView(viewData);\n      }\n    }\n  }, {\n    key: \"detach\",\n    value: function detach(index) {\n      var view = detachEmbeddedView(this._data, index);\n      return view ? new ViewRef_(view) : null;\n    }\n  }]);\n\n  return ViewContainerRef_;\n}();\n\nfunction createChangeDetectorRef(view) {\n  return new ViewRef_(view);\n}\n\nvar ViewRef_ = /*#__PURE__*/function () {\n  function ViewRef_(_view) {\n    _classCallCheck(this, ViewRef_);\n\n    this._view = _view;\n    this._viewContainerRef = null;\n    this._appRef = null;\n  }\n\n  _createClass2(ViewRef_, [{\n    key: \"rootNodes\",\n    get: function get() {\n      return rootRenderNodes(this._view);\n    }\n  }, {\n    key: \"context\",\n    get: function get() {\n      return this._view.context;\n    }\n  }, {\n    key: \"destroyed\",\n    get: function get() {\n      return (this._view.state & 128\n      /* Destroyed */\n      ) !== 0;\n    }\n  }, {\n    key: \"markForCheck\",\n    value: function markForCheck() {\n      markParentViewsForCheck(this._view);\n    }\n  }, {\n    key: \"detach\",\n    value: function detach() {\n      this._view.state &= ~4\n      /* Attached */\n      ;\n    }\n  }, {\n    key: \"detectChanges\",\n    value: function detectChanges() {\n      var fs = this._view.root.rendererFactory;\n\n      if (fs.begin) {\n        fs.begin();\n      }\n\n      try {\n        Services.checkAndUpdateView(this._view);\n      } finally {\n        if (fs.end) {\n          fs.end();\n        }\n      }\n    }\n  }, {\n    key: \"checkNoChanges\",\n    value: function checkNoChanges() {\n      Services.checkNoChangesView(this._view);\n    }\n  }, {\n    key: \"reattach\",\n    value: function reattach() {\n      this._view.state |= 4\n      /* Attached */\n      ;\n    }\n  }, {\n    key: \"onDestroy\",\n    value: function onDestroy(callback) {\n      if (!this._view.disposables) {\n        this._view.disposables = [];\n      }\n\n      this._view.disposables.push(callback);\n    }\n  }, {\n    key: \"destroy\",\n    value: function destroy() {\n      if (this._appRef) {\n        this._appRef.detachView(this);\n      } else if (this._viewContainerRef) {\n        this._viewContainerRef.detach(this._viewContainerRef.indexOf(this));\n      }\n\n      Services.destroyView(this._view);\n    }\n  }, {\n    key: \"detachFromAppRef\",\n    value: function detachFromAppRef() {\n      this._appRef = null;\n      renderDetachView$1(this._view);\n      Services.dirtyParentQueries(this._view);\n    }\n  }, {\n    key: \"attachToAppRef\",\n    value: function attachToAppRef(appRef) {\n      if (this._viewContainerRef) {\n        throw new Error('This view is already attached to a ViewContainer!');\n      }\n\n      this._appRef = appRef;\n    }\n  }, {\n    key: \"attachToViewContainerRef\",\n    value: function attachToViewContainerRef(vcRef) {\n      if (this._appRef) {\n        throw new Error('This view is already attached directly to the ApplicationRef!');\n      }\n\n      this._viewContainerRef = vcRef;\n    }\n  }]);\n\n  return ViewRef_;\n}();\n\nfunction createTemplateData(view, def) {\n  return new TemplateRef_(view, def);\n}\n\nvar TemplateRef_ = /*#__PURE__*/function (_TemplateRef) {\n  _inherits(TemplateRef_, _TemplateRef);\n\n  var _super13 = _createSuper(TemplateRef_);\n\n  function TemplateRef_(_parentView, _def) {\n    var _this14;\n\n    _classCallCheck(this, TemplateRef_);\n\n    _this14 = _super13.call(this);\n    _this14._parentView = _parentView;\n    _this14._def = _def;\n    return _this14;\n  }\n\n  _createClass2(TemplateRef_, [{\n    key: \"createEmbeddedView\",\n    value: function createEmbeddedView(context) {\n      return new ViewRef_(Services.createEmbeddedView(this._parentView, this._def, this._def.element.template, context));\n    }\n  }, {\n    key: \"elementRef\",\n    get: function get() {\n      return new ElementRef(asElementData(this._parentView, this._def.nodeIndex).renderElement);\n    }\n  }]);\n\n  return TemplateRef_;\n}(TemplateRef);\n\nfunction createInjector$1(view, elDef) {\n  return new Injector_(view, elDef);\n}\n\nvar Injector_ = /*#__PURE__*/function () {\n  function Injector_(view, elDef) {\n    _classCallCheck(this, Injector_);\n\n    this.view = view;\n    this.elDef = elDef;\n  }\n\n  _createClass2(Injector_, [{\n    key: \"get\",\n    value: function get(token) {\n      var notFoundValue = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : Injector.THROW_IF_NOT_FOUND;\n      var allowPrivateServices = this.elDef ? (this.elDef.flags & 33554432\n      /* ComponentView */\n      ) !== 0 : false;\n      return Services.resolveDep(this.view, this.elDef, allowPrivateServices, {\n        flags: 0\n        /* None */\n        ,\n        token: token,\n        tokenKey: tokenKey(token)\n      }, notFoundValue);\n    }\n  }]);\n\n  return Injector_;\n}();\n\nfunction nodeValue(view, index) {\n  var def = view.def.nodes[index];\n\n  if (def.flags & 1\n  /* TypeElement */\n  ) {\n    var elData = asElementData(view, def.nodeIndex);\n    return def.element.template ? elData.template : elData.renderElement;\n  } else if (def.flags & 2\n  /* TypeText */\n  ) {\n    return asTextData(view, def.nodeIndex).renderText;\n  } else if (def.flags & (20224\n  /* CatProvider */\n  | 16\n  /* TypePipe */\n  )) {\n    return asProviderData(view, def.nodeIndex).instance;\n  }\n\n  throw new Error(\"Illegal state: read nodeValue for node index \".concat(index));\n}\n\nfunction createNgModuleRef(moduleType, parent, bootstrapComponents, def) {\n  return new NgModuleRef_(moduleType, parent, bootstrapComponents, def);\n}\n\nvar NgModuleRef_ = /*#__PURE__*/function () {\n  function NgModuleRef_(_moduleType, _parent, _bootstrapComponents, _def) {\n    _classCallCheck(this, NgModuleRef_);\n\n    this._moduleType = _moduleType;\n    this._parent = _parent;\n    this._bootstrapComponents = _bootstrapComponents;\n    this._def = _def;\n    this._destroyListeners = [];\n    this._destroyed = false;\n    this.injector = this;\n    initNgModule(this);\n  }\n\n  _createClass2(NgModuleRef_, [{\n    key: \"get\",\n    value: function get(token) {\n      var notFoundValue = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : Injector.THROW_IF_NOT_FOUND;\n      var injectFlags = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : InjectFlags.Default;\n      var flags = 0\n      /* None */\n      ;\n\n      if (injectFlags & InjectFlags.SkipSelf) {\n        flags |= 1\n        /* SkipSelf */\n        ;\n      } else if (injectFlags & InjectFlags.Self) {\n        flags |= 4\n        /* Self */\n        ;\n      }\n\n      return resolveNgModuleDep(this, {\n        token: token,\n        tokenKey: tokenKey(token),\n        flags: flags\n      }, notFoundValue);\n    }\n  }, {\n    key: \"instance\",\n    get: function get() {\n      return this.get(this._moduleType);\n    }\n  }, {\n    key: \"componentFactoryResolver\",\n    get: function get() {\n      return this.get(ComponentFactoryResolver);\n    }\n  }, {\n    key: \"destroy\",\n    value: function destroy() {\n      if (this._destroyed) {\n        throw new Error(\"The ng module \".concat(stringify(this.instance.constructor), \" has already been destroyed.\"));\n      }\n\n      this._destroyed = true;\n      callNgModuleLifecycle(this, 131072\n      /* OnDestroy */\n      );\n\n      this._destroyListeners.forEach(function (listener) {\n        return listener();\n      });\n    }\n  }, {\n    key: \"onDestroy\",\n    value: function onDestroy(callback) {\n      this._destroyListeners.push(callback);\n    }\n  }]);\n\n  return NgModuleRef_;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar Renderer2TokenKey = tokenKey(Renderer2);\nvar ElementRefTokenKey = tokenKey(ElementRef);\nvar ViewContainerRefTokenKey = tokenKey(ViewContainerRef);\nvar TemplateRefTokenKey = tokenKey(TemplateRef);\nvar ChangeDetectorRefTokenKey = tokenKey(ChangeDetectorRef);\nvar InjectorRefTokenKey$1 = tokenKey(Injector);\nvar INJECTORRefTokenKey$1 = tokenKey(INJECTOR$1);\n\nfunction directiveDef(checkIndex, flags, matchedQueries, childCount, ctor, deps, props, outputs) {\n  var bindings = [];\n\n  if (props) {\n    for (var prop in props) {\n      var _props$prop = _slicedToArray(props[prop], 2),\n          bindingIndex = _props$prop[0],\n          nonMinifiedName = _props$prop[1];\n\n      bindings[bindingIndex] = {\n        flags: 8\n        /* TypeProperty */\n        ,\n        name: prop,\n        nonMinifiedName: nonMinifiedName,\n        ns: null,\n        securityContext: null,\n        suffix: null\n      };\n    }\n  }\n\n  var outputDefs = [];\n\n  if (outputs) {\n    for (var propName in outputs) {\n      outputDefs.push({\n        type: 1\n        /* DirectiveOutput */\n        ,\n        propName: propName,\n        target: null,\n        eventName: outputs[propName]\n      });\n    }\n  }\n\n  flags |= 16384\n  /* TypeDirective */\n  ;\n  return _def(checkIndex, flags, matchedQueries, childCount, ctor, ctor, deps, bindings, outputDefs);\n}\n\nfunction pipeDef(flags, ctor, deps) {\n  flags |= 16\n  /* TypePipe */\n  ;\n  return _def(-1, flags, null, 0, ctor, ctor, deps);\n}\n\nfunction providerDef(flags, matchedQueries, token, value, deps) {\n  return _def(-1, flags, matchedQueries, 0, token, value, deps);\n}\n\nfunction _def(checkIndex, flags, matchedQueriesDsl, childCount, token, value, deps, bindings, outputs) {\n  var _splitMatchedQueriesD = splitMatchedQueriesDsl(matchedQueriesDsl),\n      matchedQueries = _splitMatchedQueriesD.matchedQueries,\n      references = _splitMatchedQueriesD.references,\n      matchedQueryIds = _splitMatchedQueriesD.matchedQueryIds;\n\n  if (!outputs) {\n    outputs = [];\n  }\n\n  if (!bindings) {\n    bindings = [];\n  } // Need to resolve forwardRefs as e.g. for `useValue` we\n  // lowered the expression and then stopped evaluating it,\n  // i.e. also didn't unwrap it.\n\n\n  value = resolveForwardRef(value);\n  var depDefs = splitDepsDsl(deps, stringify(token));\n  return {\n    // will bet set by the view definition\n    nodeIndex: -1,\n    parent: null,\n    renderParent: null,\n    bindingIndex: -1,\n    outputIndex: -1,\n    // regular values\n    checkIndex: checkIndex,\n    flags: flags,\n    childFlags: 0,\n    directChildFlags: 0,\n    childMatchedQueries: 0,\n    matchedQueries: matchedQueries,\n    matchedQueryIds: matchedQueryIds,\n    references: references,\n    ngContentIndex: -1,\n    childCount: childCount,\n    bindings: bindings,\n    bindingFlags: calcBindingFlags(bindings),\n    outputs: outputs,\n    element: null,\n    provider: {\n      token: token,\n      value: value,\n      deps: depDefs\n    },\n    text: null,\n    query: null,\n    ngContent: null\n  };\n}\n\nfunction createProviderInstance(view, def) {\n  return _createProviderInstance$1(view, def);\n}\n\nfunction createPipeInstance(view, def) {\n  // deps are looked up from component.\n  var compView = view;\n\n  while (compView.parent && !isComponentView(compView)) {\n    compView = compView.parent;\n  } // pipes can see the private services of the component\n\n\n  var allowPrivateServices = true; // pipes are always eager and classes!\n\n  return createClass(compView.parent, viewParentEl(compView), allowPrivateServices, def.provider.value, def.provider.deps);\n}\n\nfunction createDirectiveInstance(view, def) {\n  // components can see other private services, other directives can't.\n  var allowPrivateServices = (def.flags & 32768\n  /* Component */\n  ) > 0; // directives are always eager and classes!\n\n  var instance = createClass(view, def.parent, allowPrivateServices, def.provider.value, def.provider.deps);\n\n  if (def.outputs.length) {\n    for (var i = 0; i < def.outputs.length; i++) {\n      var output = def.outputs[i];\n      var outputObservable = instance[output.propName];\n\n      if (isObservable(outputObservable)) {\n        var subscription = outputObservable.subscribe(eventHandlerClosure(view, def.parent.nodeIndex, output.eventName));\n        view.disposables[def.outputIndex + i] = subscription.unsubscribe.bind(subscription);\n      } else {\n        throw new Error(\"@Output \".concat(output.propName, \" not initialized in '\").concat(instance.constructor.name, \"'.\"));\n      }\n    }\n  }\n\n  return instance;\n}\n\nfunction eventHandlerClosure(view, index, eventName) {\n  return function (event) {\n    return dispatchEvent(view, index, eventName, event);\n  };\n}\n\nfunction checkAndUpdateDirectiveInline(view, def, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9) {\n  var providerData = asProviderData(view, def.nodeIndex);\n  var directive = providerData.instance;\n  var changed = false;\n  var changes = undefined;\n  var bindLen = def.bindings.length;\n\n  if (bindLen > 0 && checkBinding(view, def, 0, v0)) {\n    changed = true;\n    changes = updateProp(view, providerData, def, 0, v0, changes);\n  }\n\n  if (bindLen > 1 && checkBinding(view, def, 1, v1)) {\n    changed = true;\n    changes = updateProp(view, providerData, def, 1, v1, changes);\n  }\n\n  if (bindLen > 2 && checkBinding(view, def, 2, v2)) {\n    changed = true;\n    changes = updateProp(view, providerData, def, 2, v2, changes);\n  }\n\n  if (bindLen > 3 && checkBinding(view, def, 3, v3)) {\n    changed = true;\n    changes = updateProp(view, providerData, def, 3, v3, changes);\n  }\n\n  if (bindLen > 4 && checkBinding(view, def, 4, v4)) {\n    changed = true;\n    changes = updateProp(view, providerData, def, 4, v4, changes);\n  }\n\n  if (bindLen > 5 && checkBinding(view, def, 5, v5)) {\n    changed = true;\n    changes = updateProp(view, providerData, def, 5, v5, changes);\n  }\n\n  if (bindLen > 6 && checkBinding(view, def, 6, v6)) {\n    changed = true;\n    changes = updateProp(view, providerData, def, 6, v6, changes);\n  }\n\n  if (bindLen > 7 && checkBinding(view, def, 7, v7)) {\n    changed = true;\n    changes = updateProp(view, providerData, def, 7, v7, changes);\n  }\n\n  if (bindLen > 8 && checkBinding(view, def, 8, v8)) {\n    changed = true;\n    changes = updateProp(view, providerData, def, 8, v8, changes);\n  }\n\n  if (bindLen > 9 && checkBinding(view, def, 9, v9)) {\n    changed = true;\n    changes = updateProp(view, providerData, def, 9, v9, changes);\n  }\n\n  if (changes) {\n    directive.ngOnChanges(changes);\n  }\n\n  if (def.flags & 65536\n  /* OnInit */\n  && shouldCallLifecycleInitHook(view, 256\n  /* InitState_CallingOnInit */\n  , def.nodeIndex)) {\n    directive.ngOnInit();\n  }\n\n  if (def.flags & 262144\n  /* DoCheck */\n  ) {\n    directive.ngDoCheck();\n  }\n\n  return changed;\n}\n\nfunction checkAndUpdateDirectiveDynamic(view, def, values) {\n  var providerData = asProviderData(view, def.nodeIndex);\n  var directive = providerData.instance;\n  var changed = false;\n  var changes = undefined;\n\n  for (var i = 0; i < values.length; i++) {\n    if (checkBinding(view, def, i, values[i])) {\n      changed = true;\n      changes = updateProp(view, providerData, def, i, values[i], changes);\n    }\n  }\n\n  if (changes) {\n    directive.ngOnChanges(changes);\n  }\n\n  if (def.flags & 65536\n  /* OnInit */\n  && shouldCallLifecycleInitHook(view, 256\n  /* InitState_CallingOnInit */\n  , def.nodeIndex)) {\n    directive.ngOnInit();\n  }\n\n  if (def.flags & 262144\n  /* DoCheck */\n  ) {\n    directive.ngDoCheck();\n  }\n\n  return changed;\n}\n\nfunction _createProviderInstance$1(view, def) {\n  // private services can see other private services\n  var allowPrivateServices = (def.flags & 8192\n  /* PrivateProvider */\n  ) > 0;\n  var providerDef = def.provider;\n\n  switch (def.flags & 201347067\n  /* Types */\n  ) {\n    case 512\n    /* TypeClassProvider */\n    :\n      return createClass(view, def.parent, allowPrivateServices, providerDef.value, providerDef.deps);\n\n    case 1024\n    /* TypeFactoryProvider */\n    :\n      return callFactory(view, def.parent, allowPrivateServices, providerDef.value, providerDef.deps);\n\n    case 2048\n    /* TypeUseExistingProvider */\n    :\n      return resolveDep(view, def.parent, allowPrivateServices, providerDef.deps[0]);\n\n    case 256\n    /* TypeValueProvider */\n    :\n      return providerDef.value;\n  }\n}\n\nfunction createClass(view, elDef, allowPrivateServices, ctor, deps) {\n  var len = deps.length;\n\n  switch (len) {\n    case 0:\n      return new ctor();\n\n    case 1:\n      return new ctor(resolveDep(view, elDef, allowPrivateServices, deps[0]));\n\n    case 2:\n      return new ctor(resolveDep(view, elDef, allowPrivateServices, deps[0]), resolveDep(view, elDef, allowPrivateServices, deps[1]));\n\n    case 3:\n      return new ctor(resolveDep(view, elDef, allowPrivateServices, deps[0]), resolveDep(view, elDef, allowPrivateServices, deps[1]), resolveDep(view, elDef, allowPrivateServices, deps[2]));\n\n    default:\n      var depValues = [];\n\n      for (var i = 0; i < len; i++) {\n        depValues.push(resolveDep(view, elDef, allowPrivateServices, deps[i]));\n      }\n\n      return _construct(ctor, depValues);\n  }\n}\n\nfunction callFactory(view, elDef, allowPrivateServices, factory, deps) {\n  var len = deps.length;\n\n  switch (len) {\n    case 0:\n      return factory();\n\n    case 1:\n      return factory(resolveDep(view, elDef, allowPrivateServices, deps[0]));\n\n    case 2:\n      return factory(resolveDep(view, elDef, allowPrivateServices, deps[0]), resolveDep(view, elDef, allowPrivateServices, deps[1]));\n\n    case 3:\n      return factory(resolveDep(view, elDef, allowPrivateServices, deps[0]), resolveDep(view, elDef, allowPrivateServices, deps[1]), resolveDep(view, elDef, allowPrivateServices, deps[2]));\n\n    default:\n      var depValues = [];\n\n      for (var i = 0; i < len; i++) {\n        depValues.push(resolveDep(view, elDef, allowPrivateServices, deps[i]));\n      }\n\n      return factory.apply(void 0, depValues);\n  }\n} // This default value is when checking the hierarchy for a token.\n//\n// It means both:\n// - the token is not provided by the current injector,\n// - only the element injectors should be checked (ie do not check module injectors\n//\n//          mod1\n//         /\n//       el1   mod2\n//         \\  /\n//         el2\n//\n// When requesting el2.injector.get(token), we should check in the following order and return the\n// first found value:\n// - el2.injector.get(token, default)\n// - el1.injector.get(token, NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR) -> do not check the module\n// - mod2.injector.get(token, default)\n\n\nvar NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR = {};\n\nfunction resolveDep(view, elDef, allowPrivateServices, depDef) {\n  var notFoundValue = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : Injector.THROW_IF_NOT_FOUND;\n\n  if (depDef.flags & 8\n  /* Value */\n  ) {\n    return depDef.token;\n  }\n\n  var startView = view;\n\n  if (depDef.flags & 2\n  /* Optional */\n  ) {\n    notFoundValue = null;\n  }\n\n  var tokenKey = depDef.tokenKey;\n\n  if (tokenKey === ChangeDetectorRefTokenKey) {\n    // directives on the same element as a component should be able to control the change detector\n    // of that component as well.\n    allowPrivateServices = !!(elDef && elDef.element.componentView);\n  }\n\n  if (elDef && depDef.flags & 1\n  /* SkipSelf */\n  ) {\n    allowPrivateServices = false;\n    elDef = elDef.parent;\n  }\n\n  var searchView = view;\n\n  while (searchView) {\n    if (elDef) {\n      switch (tokenKey) {\n        case Renderer2TokenKey:\n          {\n            var compView = findCompView(searchView, elDef, allowPrivateServices);\n            return compView.renderer;\n          }\n\n        case ElementRefTokenKey:\n          return new ElementRef(asElementData(searchView, elDef.nodeIndex).renderElement);\n\n        case ViewContainerRefTokenKey:\n          return asElementData(searchView, elDef.nodeIndex).viewContainer;\n\n        case TemplateRefTokenKey:\n          {\n            if (elDef.element.template) {\n              return asElementData(searchView, elDef.nodeIndex).template;\n            }\n\n            break;\n          }\n\n        case ChangeDetectorRefTokenKey:\n          {\n            var cdView = findCompView(searchView, elDef, allowPrivateServices);\n            return createChangeDetectorRef(cdView);\n          }\n\n        case InjectorRefTokenKey$1:\n        case INJECTORRefTokenKey$1:\n          return createInjector$1(searchView, elDef);\n\n        default:\n          var _providerDef2 = (allowPrivateServices ? elDef.element.allProviders : elDef.element.publicProviders)[tokenKey];\n\n          if (_providerDef2) {\n            var providerData = asProviderData(searchView, _providerDef2.nodeIndex);\n\n            if (!providerData) {\n              providerData = {\n                instance: _createProviderInstance$1(searchView, _providerDef2)\n              };\n              searchView.nodes[_providerDef2.nodeIndex] = providerData;\n            }\n\n            return providerData.instance;\n          }\n\n      }\n    }\n\n    allowPrivateServices = isComponentView(searchView);\n    elDef = viewParentEl(searchView);\n    searchView = searchView.parent;\n\n    if (depDef.flags & 4\n    /* Self */\n    ) {\n      searchView = null;\n    }\n  }\n\n  var value = startView.root.injector.get(depDef.token, NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR);\n\n  if (value !== NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR || notFoundValue === NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR) {\n    // Return the value from the root element injector when\n    // - it provides it\n    //   (value !== NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR)\n    // - the module injector should not be checked\n    //   (notFoundValue === NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR)\n    return value;\n  }\n\n  return startView.root.ngModule.injector.get(depDef.token, notFoundValue);\n}\n\nfunction findCompView(view, elDef, allowPrivateServices) {\n  var compView;\n\n  if (allowPrivateServices) {\n    compView = asElementData(view, elDef.nodeIndex).componentView;\n  } else {\n    compView = view;\n\n    while (compView.parent && !isComponentView(compView)) {\n      compView = compView.parent;\n    }\n  }\n\n  return compView;\n}\n\nfunction updateProp(view, providerData, def, bindingIdx, value, changes) {\n  if (def.flags & 32768\n  /* Component */\n  ) {\n    var compView = asElementData(view, def.parent.nodeIndex).componentView;\n\n    if (compView.def.flags & 2\n    /* OnPush */\n    ) {\n      compView.state |= 8\n      /* ChecksEnabled */\n      ;\n    }\n  }\n\n  var binding = def.bindings[bindingIdx];\n  var propName = binding.name; // Note: This is still safe with Closure Compiler as\n  // the user passed in the property name as an object has to `providerDef`,\n  // so Closure Compiler will have renamed the property correctly already.\n\n  providerData.instance[propName] = value;\n\n  if (def.flags & 524288\n  /* OnChanges */\n  ) {\n    changes = changes || {};\n    var oldValue = WrappedValue.unwrap(view.oldValues[def.bindingIndex + bindingIdx]);\n    var _binding = def.bindings[bindingIdx];\n    changes[_binding.nonMinifiedName] = new SimpleChange(oldValue, value, (view.state & 2\n    /* FirstCheck */\n    ) !== 0);\n  }\n\n  view.oldValues[def.bindingIndex + bindingIdx] = value;\n  return changes;\n} // This function calls the ngAfterContentCheck, ngAfterContentInit,\n// ngAfterViewCheck, and ngAfterViewInit lifecycle hooks (depending on the node\n// flags in lifecycle). Unlike ngDoCheck, ngOnChanges and ngOnInit, which are\n// called during a pre-order traversal of the view tree (that is calling the\n// parent hooks before the child hooks) these events are sent in using a\n// post-order traversal of the tree (children before parents). This changes the\n// meaning of initIndex in the view state. For ngOnInit, initIndex tracks the\n// expected nodeIndex which a ngOnInit should be called. When sending\n// ngAfterContentInit and ngAfterViewInit it is the expected count of\n// ngAfterContentInit or ngAfterViewInit methods that have been called. This\n// ensure that despite being called recursively or after picking up after an\n// exception, the ngAfterContentInit or ngAfterViewInit will be called on the\n// correct nodes. Consider for example, the following (where E is an element\n// and D is a directive)\n//  Tree:       pre-order index  post-order index\n//    E1        0                6\n//      E2      1                1\n//       D3     2                0\n//      E4      3                5\n//       E5     4                4\n//        E6    5                2\n//        E7    6                3\n// As can be seen, the post-order index has an unclear relationship to the\n// pre-order index (postOrderIndex === preOrderIndex - parentCount +\n// childCount). Since number of calls to ngAfterContentInit and ngAfterViewInit\n// are stable (will be the same for the same view regardless of exceptions or\n// recursion) we just need to count them which will roughly correspond to the\n// post-order index (it skips elements and directives that do not have\n// lifecycle hooks).\n//\n// For example, if an exception is raised in the E6.onAfterViewInit() the\n// initIndex is left at 3 (by shouldCallLifecycleInitHook() which set it to\n// initIndex + 1). When checkAndUpdateView() is called again D3, E2 and E6 will\n// not have their ngAfterViewInit() called but, starting with E7, the rest of\n// the view will begin getting ngAfterViewInit() called until a check and\n// pass is complete.\n//\n// This algorthim also handles recursion. Consider if E4's ngAfterViewInit()\n// indirectly calls E1's ChangeDetectorRef.detectChanges(). The expected\n// initIndex is set to 6, the recusive checkAndUpdateView() starts walk again.\n// D3, E2, E6, E7, E5 and E4 are skipped, ngAfterViewInit() is called on E1.\n// When the recursion returns the initIndex will be 7 so E1 is skipped as it\n// has already been called in the recursively called checkAnUpdateView().\n\n\nfunction callLifecycleHooksChildrenFirst(view, lifecycles) {\n  if (!(view.def.nodeFlags & lifecycles)) {\n    return;\n  }\n\n  var nodes = view.def.nodes;\n  var initIndex = 0;\n\n  for (var i = 0; i < nodes.length; i++) {\n    var nodeDef = nodes[i];\n    var parent = nodeDef.parent;\n\n    if (!parent && nodeDef.flags & lifecycles) {\n      // matching root node (e.g. a pipe)\n      callProviderLifecycles(view, i, nodeDef.flags & lifecycles, initIndex++);\n    }\n\n    if ((nodeDef.childFlags & lifecycles) === 0) {\n      // no child matches one of the lifecycles\n      i += nodeDef.childCount;\n    }\n\n    while (parent && parent.flags & 1\n    /* TypeElement */\n    && i === parent.nodeIndex + parent.childCount) {\n      // last child of an element\n      if (parent.directChildFlags & lifecycles) {\n        initIndex = callElementProvidersLifecycles(view, parent, lifecycles, initIndex);\n      }\n\n      parent = parent.parent;\n    }\n  }\n}\n\nfunction callElementProvidersLifecycles(view, elDef, lifecycles, initIndex) {\n  for (var i = elDef.nodeIndex + 1; i <= elDef.nodeIndex + elDef.childCount; i++) {\n    var nodeDef = view.def.nodes[i];\n\n    if (nodeDef.flags & lifecycles) {\n      callProviderLifecycles(view, i, nodeDef.flags & lifecycles, initIndex++);\n    } // only visit direct children\n\n\n    i += nodeDef.childCount;\n  }\n\n  return initIndex;\n}\n\nfunction callProviderLifecycles(view, index, lifecycles, initIndex) {\n  var providerData = asProviderData(view, index);\n\n  if (!providerData) {\n    return;\n  }\n\n  var provider = providerData.instance;\n\n  if (!provider) {\n    return;\n  }\n\n  Services.setCurrentNode(view, index);\n\n  if (lifecycles & 1048576\n  /* AfterContentInit */\n  && shouldCallLifecycleInitHook(view, 512\n  /* InitState_CallingAfterContentInit */\n  , initIndex)) {\n    provider.ngAfterContentInit();\n  }\n\n  if (lifecycles & 2097152\n  /* AfterContentChecked */\n  ) {\n    provider.ngAfterContentChecked();\n  }\n\n  if (lifecycles & 4194304\n  /* AfterViewInit */\n  && shouldCallLifecycleInitHook(view, 768\n  /* InitState_CallingAfterViewInit */\n  , initIndex)) {\n    provider.ngAfterViewInit();\n  }\n\n  if (lifecycles & 8388608\n  /* AfterViewChecked */\n  ) {\n    provider.ngAfterViewChecked();\n  }\n\n  if (lifecycles & 131072\n  /* OnDestroy */\n  ) {\n    provider.ngOnDestroy();\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ComponentFactoryResolver$1 = /*#__PURE__*/function (_ComponentFactoryReso) {\n  _inherits(ComponentFactoryResolver$1, _ComponentFactoryReso);\n\n  var _super14 = _createSuper(ComponentFactoryResolver$1);\n\n  /**\n   * @param ngModule The NgModuleRef to which all resolved factories are bound.\n   */\n  function ComponentFactoryResolver$1(ngModule) {\n    var _this15;\n\n    _classCallCheck(this, ComponentFactoryResolver$1);\n\n    _this15 = _super14.call(this);\n    _this15.ngModule = ngModule;\n    return _this15;\n  }\n\n  _createClass2(ComponentFactoryResolver$1, [{\n    key: \"resolveComponentFactory\",\n    value: function resolveComponentFactory(component) {\n      ngDevMode && assertComponentType(component);\n      var componentDef = getComponentDef(component);\n      return new ComponentFactory$1(componentDef, this.ngModule);\n    }\n  }]);\n\n  return ComponentFactoryResolver$1;\n}(ComponentFactoryResolver);\n\nfunction toRefArray(map) {\n  var array = [];\n\n  for (var nonMinified in map) {\n    if (map.hasOwnProperty(nonMinified)) {\n      var minified = map[nonMinified];\n      array.push({\n        propName: minified,\n        templateName: nonMinified\n      });\n    }\n  }\n\n  return array;\n}\n\nfunction getNamespace$1(elementName) {\n  var name = elementName.toLowerCase();\n  return name === 'svg' ? SVG_NAMESPACE : name === 'math' ? MATH_ML_NAMESPACE : null;\n}\n/**\n * A change detection scheduler token for {@link RootContext}. This token is the default value used\n * for the default `RootContext` found in the {@link ROOT_CONTEXT} token.\n */\n\n\nvar SCHEDULER = new InjectionToken('SCHEDULER_TOKEN', {\n  providedIn: 'root',\n  factory: function factory() {\n    return defaultScheduler;\n  }\n});\n\nfunction createChainedInjector(rootViewInjector, moduleInjector) {\n  return {\n    get: function get(token, notFoundValue, flags) {\n      var value = rootViewInjector.get(token, NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR, flags);\n\n      if (value !== NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR || notFoundValue === NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR) {\n        // Return the value from the root element injector when\n        // - it provides it\n        //   (value !== NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR)\n        // - the module injector should not be checked\n        //   (notFoundValue === NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR)\n        return value;\n      }\n\n      return moduleInjector.get(token, notFoundValue, flags);\n    }\n  };\n}\n/**\n * Render3 implementation of {@link viewEngine_ComponentFactory}.\n */\n\n\nvar ComponentFactory$1 = /*#__PURE__*/function (_ComponentFactory3) {\n  _inherits(ComponentFactory$1, _ComponentFactory3);\n\n  var _super15 = _createSuper(ComponentFactory$1);\n\n  /**\n   * @param componentDef The component definition.\n   * @param ngModule The NgModuleRef to which the factory is bound.\n   */\n  function ComponentFactory$1(componentDef, ngModule) {\n    var _this16;\n\n    _classCallCheck(this, ComponentFactory$1);\n\n    _this16 = _super15.call(this);\n    _this16.componentDef = componentDef;\n    _this16.ngModule = ngModule;\n    _this16.componentType = componentDef.type;\n    _this16.selector = stringifyCSSSelectorList(componentDef.selectors);\n    _this16.ngContentSelectors = componentDef.ngContentSelectors ? componentDef.ngContentSelectors : [];\n    _this16.isBoundToModule = !!ngModule;\n    return _this16;\n  }\n\n  _createClass2(ComponentFactory$1, [{\n    key: \"inputs\",\n    get: function get() {\n      return toRefArray(this.componentDef.inputs);\n    }\n  }, {\n    key: \"outputs\",\n    get: function get() {\n      return toRefArray(this.componentDef.outputs);\n    }\n  }, {\n    key: \"create\",\n    value: function create(injector, projectableNodes, rootSelectorOrNode, ngModule) {\n      ngModule = ngModule || this.ngModule;\n      var rootViewInjector = ngModule ? createChainedInjector(injector, ngModule.injector) : injector;\n      var rendererFactory = rootViewInjector.get(RendererFactory2, domRendererFactory3);\n      var sanitizer = rootViewInjector.get(Sanitizer, null);\n      var hostRenderer = rendererFactory.createRenderer(null, this.componentDef); // Determine a tag name used for creating host elements when this component is created\n      // dynamically. Default to 'div' if this component did not specify any tag name in its selector.\n\n      var elementName = this.componentDef.selectors[0][0] || 'div';\n      var hostRNode = rootSelectorOrNode ? locateHostElement(hostRenderer, rootSelectorOrNode, this.componentDef.encapsulation) : createElementNode(rendererFactory.createRenderer(null, this.componentDef), elementName, getNamespace$1(elementName));\n      var rootFlags = this.componentDef.onPush ? 64\n      /* Dirty */\n      | 512\n      /* IsRoot */\n      : 16\n      /* CheckAlways */\n      | 512\n      /* IsRoot */\n      ;\n      var rootContext = createRootContext(); // Create the root view. Uses empty TView and ContentTemplate.\n\n      var rootTView = createTView(0\n      /* Root */\n      , null, null, 1, 0, null, null, null, null, null);\n      var rootLView = createLView(null, rootTView, rootContext, rootFlags, null, null, rendererFactory, hostRenderer, sanitizer, rootViewInjector); // rootView is the parent when bootstrapping\n      // TODO(misko): it looks like we are entering view here but we don't really need to as\n      // `renderView` does that. However as the code is written it is needed because\n      // `createRootComponentView` and `createRootComponent` both read global state. Fixing those\n      // issues would allow us to drop this.\n\n      enterView(rootLView);\n      var component;\n      var tElementNode;\n\n      try {\n        var componentView = createRootComponentView(hostRNode, this.componentDef, rootLView, rendererFactory, hostRenderer);\n\n        if (hostRNode) {\n          if (rootSelectorOrNode) {\n            setUpAttributes(hostRenderer, hostRNode, ['ng-version', VERSION.full]);\n          } else {\n            // If host element is created as a part of this function call (i.e. `rootSelectorOrNode`\n            // is not defined), also apply attributes and classes extracted from component selector.\n            // Extract attributes and classes from the first selector only to match VE behavior.\n            var _extractAttrsAndClass = extractAttrsAndClassesFromSelector(this.componentDef.selectors[0]),\n                attrs = _extractAttrsAndClass.attrs,\n                classes = _extractAttrsAndClass.classes;\n\n            if (attrs) {\n              setUpAttributes(hostRenderer, hostRNode, attrs);\n            }\n\n            if (classes && classes.length > 0) {\n              writeDirectClass(hostRenderer, hostRNode, classes.join(' '));\n            }\n          }\n        }\n\n        tElementNode = getTNode(rootTView, HEADER_OFFSET);\n\n        if (projectableNodes !== undefined) {\n          var projection = tElementNode.projection = [];\n\n          for (var i = 0; i < this.ngContentSelectors.length; i++) {\n            var nodesforSlot = projectableNodes[i]; // Projectable nodes can be passed as array of arrays or an array of iterables (ngUpgrade\n            // case). Here we do normalize passed data structure to be an array of arrays to avoid\n            // complex checks down the line.\n            // We also normalize the length of the passed in projectable nodes (to match the number of\n            // <ng-container> slots defined by a component).\n\n            projection.push(nodesforSlot != null ? Array.from(nodesforSlot) : null);\n          }\n        } // TODO: should LifecycleHooksFeature and other host features be generated by the compiler and\n        // executed here?\n        // Angular 5 reference: https://stackblitz.com/edit/lifecycle-hooks-vcref\n\n\n        component = createRootComponent(componentView, this.componentDef, rootLView, rootContext, [LifecycleHooksFeature]);\n        renderView(rootTView, rootLView, null);\n      } finally {\n        leaveView();\n      }\n\n      return new ComponentRef$1(this.componentType, component, createElementRef(tElementNode, rootLView), rootLView, tElementNode);\n    }\n  }]);\n\n  return ComponentFactory$1;\n}(ComponentFactory);\n\nvar componentFactoryResolver = new ComponentFactoryResolver$1();\n/**\n * Creates a ComponentFactoryResolver and stores it on the injector. Or, if the\n * ComponentFactoryResolver\n * already exists, retrieves the existing ComponentFactoryResolver.\n *\n * @returns The ComponentFactoryResolver instance to use\n */\n\nfunction injectComponentFactoryResolver() {\n  return componentFactoryResolver;\n}\n/**\n * Represents an instance of a Component created via a {@link ComponentFactory}.\n *\n * `ComponentRef` provides access to the Component Instance as well other objects related to this\n * Component Instance and allows you to destroy the Component Instance via the {@link #destroy}\n * method.\n *\n */\n\n\nvar ComponentRef$1 = /*#__PURE__*/function (_ComponentRef2) {\n  _inherits(ComponentRef$1, _ComponentRef2);\n\n  var _super16 = _createSuper(ComponentRef$1);\n\n  function ComponentRef$1(componentType, instance, location, _rootLView, _tNode) {\n    var _this17;\n\n    _classCallCheck(this, ComponentRef$1);\n\n    _this17 = _super16.call(this);\n    _this17.location = location;\n    _this17._rootLView = _rootLView;\n    _this17._tNode = _tNode;\n    _this17.destroyCbs = [];\n    _this17.instance = instance;\n    _this17.hostView = _this17.changeDetectorRef = new RootViewRef(_rootLView);\n    _this17.componentType = componentType;\n    return _this17;\n  }\n\n  _createClass2(ComponentRef$1, [{\n    key: \"injector\",\n    get: function get() {\n      return new NodeInjector(this._tNode, this._rootLView);\n    }\n  }, {\n    key: \"destroy\",\n    value: function destroy() {\n      if (this.destroyCbs) {\n        this.destroyCbs.forEach(function (fn) {\n          return fn();\n        });\n        this.destroyCbs = null;\n        !this.hostView.destroyed && this.hostView.destroy();\n      }\n    }\n  }, {\n    key: \"onDestroy\",\n    value: function onDestroy(callback) {\n      if (this.destroyCbs) {\n        this.destroyCbs.push(callback);\n      }\n    }\n  }]);\n\n  return ComponentRef$1;\n}(ComponentRef);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Adds decorator, constructor, and property metadata to a given type via static metadata fields\n * on the type.\n *\n * These metadata fields can later be read with Angular's `ReflectionCapabilities` API.\n *\n * Calls to `setClassMetadata` can be marked as pure, resulting in the metadata assignments being\n * tree-shaken away during production builds.\n */\n\n\nfunction setClassMetadata(type, decorators, ctorParameters, propDecorators) {\n  return noSideEffects(function () {\n    var clazz = type;\n\n    if (decorators !== null) {\n      if (clazz.hasOwnProperty('decorators') && clazz.decorators !== undefined) {\n        var _clazz$decorators;\n\n        (_clazz$decorators = clazz.decorators).push.apply(_clazz$decorators, _toConsumableArray(decorators));\n      } else {\n        clazz.decorators = decorators;\n      }\n    }\n\n    if (ctorParameters !== null) {\n      // Rather than merging, clobber the existing parameters. If other projects exist which\n      // use tsickle-style annotations and reflect over them in the same way, this could\n      // cause issues, but that is vanishingly unlikely.\n      clazz.ctorParameters = ctorParameters;\n    }\n\n    if (propDecorators !== null) {\n      // The property decorator objects are merged as it is possible different fields have\n      // different decorator types. Decorators on individual fields are not merged, as it's\n      // also incredibly unlikely that a field will be decorated both with an Angular\n      // decorator and a non-Angular decorator that's also been downleveled.\n      if (clazz.hasOwnProperty('propDecorators') && clazz.propDecorators !== undefined) {\n        clazz.propDecorators = Object.assign(Object.assign({}, clazz.propDecorators), propDecorators);\n      } else {\n        clazz.propDecorators = propDecorators;\n      }\n    }\n  });\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Map of module-id to the corresponding NgModule.\n * - In pre Ivy we track NgModuleFactory,\n * - In post Ivy we track the NgModuleType\n */\n\n\nvar modules = new Map();\n/**\n * Registers a loaded module. Should only be called from generated NgModuleFactory code.\n * @publicApi\n */\n\nfunction registerModuleFactory(id, factory) {\n  var existing = modules.get(id);\n  assertSameOrNotExisting(id, existing && existing.moduleType, factory.moduleType);\n  modules.set(id, factory);\n}\n\nfunction assertSameOrNotExisting(id, type, incoming) {\n  if (type && type !== incoming) {\n    throw new Error(\"Duplicate module registered for \".concat(id, \" - \").concat(stringify(type), \" vs \").concat(stringify(type.name)));\n  }\n}\n\nfunction registerNgModuleType(ngModuleType) {\n  var visited = new Set();\n  recurse(ngModuleType);\n\n  function recurse(ngModuleType) {\n    // The imports array of an NgModule must refer to other NgModules,\n    // so an error is thrown if no module definition is available.\n    var def = getNgModuleDef(ngModuleType,\n    /* throwNotFound */\n    true);\n    var id = def.id;\n\n    if (id !== null) {\n      var existing = modules.get(id);\n      assertSameOrNotExisting(id, existing, ngModuleType);\n      modules.set(id, ngModuleType);\n    }\n\n    var imports = maybeUnwrapFn(def.imports);\n\n    var _iterator4 = _createForOfIteratorHelper(imports),\n        _step4;\n\n    try {\n      for (_iterator4.s(); !(_step4 = _iterator4.n()).done;) {\n        var i = _step4.value;\n\n        if (!visited.has(i)) {\n          visited.add(i);\n          recurse(i);\n        }\n      }\n    } catch (err) {\n      _iterator4.e(err);\n    } finally {\n      _iterator4.f();\n    }\n  }\n}\n\nfunction clearModulesForTest() {\n  modules.clear();\n}\n\nfunction getRegisteredNgModuleType(id) {\n  return modules.get(id) || autoRegisterModuleById[id];\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar NgModuleRef$1 = /*#__PURE__*/function (_NgModuleRef) {\n  _inherits(NgModuleRef$1, _NgModuleRef);\n\n  var _super17 = _createSuper(NgModuleRef$1);\n\n  function NgModuleRef$1(ngModuleType, _parent) {\n    var _this18;\n\n    _classCallCheck(this, NgModuleRef$1);\n\n    _this18 = _super17.call(this);\n    _this18._parent = _parent; // tslint:disable-next-line:require-internal-with-underscore\n\n    _this18._bootstrapComponents = [];\n    _this18.injector = _assertThisInitialized(_this18);\n    _this18.destroyCbs = []; // When bootstrapping a module we have a dependency graph that looks like this:\n    // ApplicationRef -> ComponentFactoryResolver -> NgModuleRef. The problem is that if the\n    // module being resolved tries to inject the ComponentFactoryResolver, it'll create a\n    // circular dependency which will result in a runtime error, because the injector doesn't\n    // exist yet. We work around the issue by creating the ComponentFactoryResolver ourselves\n    // and providing it, rather than letting the injector resolve it.\n\n    _this18.componentFactoryResolver = new ComponentFactoryResolver$1(_assertThisInitialized(_this18));\n    var ngModuleDef = getNgModuleDef(ngModuleType);\n    ngDevMode && assertDefined(ngModuleDef, \"NgModule '\".concat(stringify(ngModuleType), \"' is not a subtype of 'NgModuleType'.\"));\n    var ngLocaleIdDef = getNgLocaleIdDef(ngModuleType);\n    ngLocaleIdDef && setLocaleId(ngLocaleIdDef);\n    _this18._bootstrapComponents = maybeUnwrapFn(ngModuleDef.bootstrap);\n    _this18._r3Injector = createInjectorWithoutInjectorInstances(ngModuleType, _parent, [{\n      provide: NgModuleRef,\n      useValue: _assertThisInitialized(_this18)\n    }, {\n      provide: ComponentFactoryResolver,\n      useValue: _this18.componentFactoryResolver\n    }], stringify(ngModuleType)); // We need to resolve the injector types separately from the injector creation, because\n    // the module might be trying to use this ref in its contructor for DI which will cause a\n    // circular error that will eventually error out, because the injector isn't created yet.\n\n    _this18._r3Injector._resolveInjectorDefTypes();\n\n    _this18.instance = _this18.get(ngModuleType);\n    return _this18;\n  }\n\n  _createClass2(NgModuleRef$1, [{\n    key: \"get\",\n    value: function get(token) {\n      var notFoundValue = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : Injector.THROW_IF_NOT_FOUND;\n      var injectFlags = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : InjectFlags.Default;\n\n      if (token === Injector || token === NgModuleRef || token === INJECTOR$1) {\n        return this;\n      }\n\n      return this._r3Injector.get(token, notFoundValue, injectFlags);\n    }\n  }, {\n    key: \"destroy\",\n    value: function destroy() {\n      ngDevMode && assertDefined(this.destroyCbs, 'NgModule already destroyed');\n      var injector = this._r3Injector;\n      !injector.destroyed && injector.destroy();\n      this.destroyCbs.forEach(function (fn) {\n        return fn();\n      });\n      this.destroyCbs = null;\n    }\n  }, {\n    key: \"onDestroy\",\n    value: function onDestroy(callback) {\n      ngDevMode && assertDefined(this.destroyCbs, 'NgModule already destroyed');\n      this.destroyCbs.push(callback);\n    }\n  }]);\n\n  return NgModuleRef$1;\n}(NgModuleRef);\n\nvar NgModuleFactory$1 = /*#__PURE__*/function (_NgModuleFactory) {\n  _inherits(NgModuleFactory$1, _NgModuleFactory);\n\n  var _super18 = _createSuper(NgModuleFactory$1);\n\n  function NgModuleFactory$1(moduleType) {\n    var _this19;\n\n    _classCallCheck(this, NgModuleFactory$1);\n\n    _this19 = _super18.call(this);\n    _this19.moduleType = moduleType;\n    var ngModuleDef = getNgModuleDef(moduleType);\n\n    if (ngModuleDef !== null) {\n      // Register the NgModule with Angular's module registry. The location (and hence timing) of\n      // this call is critical to ensure this works correctly (modules get registered when expected)\n      // without bloating bundles (modules are registered when otherwise not referenced).\n      //\n      // In View Engine, registration occurs in the .ngfactory.js file as a side effect. This has\n      // several practical consequences:\n      //\n      // - If an .ngfactory file is not imported from, the module won't be registered (and can be\n      //   tree shaken).\n      // - If an .ngfactory file is imported from, the module will be registered even if an instance\n      //   is not actually created (via `create` below).\n      // - Since an .ngfactory file in View Engine references the .ngfactory files of the NgModule's\n      //   imports,\n      //\n      // In Ivy, things are a bit different. .ngfactory files still exist for compatibility, but are\n      // not a required API to use - there are other ways to obtain an NgModuleFactory for a given\n      // NgModule. Thus, relying on a side effect in the .ngfactory file is not sufficient. Instead,\n      // the side effect of registration is added here, in the constructor of NgModuleFactory,\n      // ensuring no matter how a factory is created, the module is registered correctly.\n      //\n      // An alternative would be to include the registration side effect inline following the actual\n      // NgModule definition. This also has the correct timing, but breaks tree-shaking - modules\n      // will be registered and retained even if they're otherwise never referenced.\n      registerNgModuleType(moduleType);\n    }\n\n    return _this19;\n  }\n\n  _createClass2(NgModuleFactory$1, [{\n    key: \"create\",\n    value: function create(parentInjector) {\n      return new NgModuleRef$1(this.moduleType, parentInjector);\n    }\n  }]);\n\n  return NgModuleFactory$1;\n}(NgModuleFactory);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Bindings for pure functions are stored after regular bindings.\n *\n * |-------decls------|---------vars---------|                 |----- hostVars (dir1) ------|\n * ------------------------------------------------------------------------------------------\n * | nodes/refs/pipes | bindings | fn slots  | injector | dir1 | host bindings | host slots |\n * ------------------------------------------------------------------------------------------\n *                    ^                      ^\n *      TView.bindingStartIndex      TView.expandoStartIndex\n *\n * Pure function instructions are given an offset from the binding root. Adding the offset to the\n * binding root gives the first index where the bindings are stored. In component views, the binding\n * root is the bindingStartIndex. In host bindings, the binding root is the expandoStartIndex +\n * any directive instances + any hostVars in directives evaluated before it.\n *\n * See VIEW_DATA.md for more information about host binding resolution.\n */\n\n/**\n * If the value hasn't been saved, calls the pure function to store and return the\n * value. If it has been saved, returns the saved value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn Function that returns a value\n * @param thisArg Optional calling context of pureFn\n * @returns value\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵpureFunction0(slotOffset, pureFn, thisArg) {\n  var bindingIndex = getBindingRoot() + slotOffset;\n  var lView = getLView();\n  return lView[bindingIndex] === NO_CHANGE ? updateBinding(lView, bindingIndex, thisArg ? pureFn.call(thisArg) : pureFn()) : getBinding(lView, bindingIndex);\n}\n/**\n * If the value of the provided exp has changed, calls the pure function to return\n * an updated value. Or if the value has not changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn Function that returns an updated value\n * @param exp Updated expression value\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵpureFunction1(slotOffset, pureFn, exp, thisArg) {\n  return pureFunction1Internal(getLView(), getBindingRoot(), slotOffset, pureFn, exp, thisArg);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵpureFunction2(slotOffset, pureFn, exp1, exp2, thisArg) {\n  return pureFunction2Internal(getLView(), getBindingRoot(), slotOffset, pureFn, exp1, exp2, thisArg);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵpureFunction3(slotOffset, pureFn, exp1, exp2, exp3, thisArg) {\n  return pureFunction3Internal(getLView(), getBindingRoot(), slotOffset, pureFn, exp1, exp2, exp3, thisArg);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵpureFunction4(slotOffset, pureFn, exp1, exp2, exp3, exp4, thisArg) {\n  return pureFunction4Internal(getLView(), getBindingRoot(), slotOffset, pureFn, exp1, exp2, exp3, exp4, thisArg);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param exp5\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵpureFunction5(slotOffset, pureFn, exp1, exp2, exp3, exp4, exp5, thisArg) {\n  var bindingIndex = getBindingRoot() + slotOffset;\n  var lView = getLView();\n  var different = bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4);\n  return bindingUpdated(lView, bindingIndex + 4, exp5) || different ? updateBinding(lView, bindingIndex + 5, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3, exp4, exp5) : pureFn(exp1, exp2, exp3, exp4, exp5)) : getBinding(lView, bindingIndex + 5);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param exp5\n * @param exp6\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵpureFunction6(slotOffset, pureFn, exp1, exp2, exp3, exp4, exp5, exp6, thisArg) {\n  var bindingIndex = getBindingRoot() + slotOffset;\n  var lView = getLView();\n  var different = bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4);\n  return bindingUpdated2(lView, bindingIndex + 4, exp5, exp6) || different ? updateBinding(lView, bindingIndex + 6, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3, exp4, exp5, exp6) : pureFn(exp1, exp2, exp3, exp4, exp5, exp6)) : getBinding(lView, bindingIndex + 6);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param exp5\n * @param exp6\n * @param exp7\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵpureFunction7(slotOffset, pureFn, exp1, exp2, exp3, exp4, exp5, exp6, exp7, thisArg) {\n  var bindingIndex = getBindingRoot() + slotOffset;\n  var lView = getLView();\n  var different = bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4);\n  return bindingUpdated3(lView, bindingIndex + 4, exp5, exp6, exp7) || different ? updateBinding(lView, bindingIndex + 7, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3, exp4, exp5, exp6, exp7) : pureFn(exp1, exp2, exp3, exp4, exp5, exp6, exp7)) : getBinding(lView, bindingIndex + 7);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param exp5\n * @param exp6\n * @param exp7\n * @param exp8\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵpureFunction8(slotOffset, pureFn, exp1, exp2, exp3, exp4, exp5, exp6, exp7, exp8, thisArg) {\n  var bindingIndex = getBindingRoot() + slotOffset;\n  var lView = getLView();\n  var different = bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4);\n  return bindingUpdated4(lView, bindingIndex + 4, exp5, exp6, exp7, exp8) || different ? updateBinding(lView, bindingIndex + 8, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3, exp4, exp5, exp6, exp7, exp8) : pureFn(exp1, exp2, exp3, exp4, exp5, exp6, exp7, exp8)) : getBinding(lView, bindingIndex + 8);\n}\n/**\n * pureFunction instruction that can support any number of bindings.\n *\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn A pure function that takes binding values and builds an object or array\n * containing those values.\n * @param exps An array of binding values\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵpureFunctionV(slotOffset, pureFn, exps, thisArg) {\n  return pureFunctionVInternal(getLView(), getBindingRoot(), slotOffset, pureFn, exps, thisArg);\n}\n/**\n * Results of a pure function invocation are stored in LView in a dedicated slot that is initialized\n * to NO_CHANGE. In rare situations a pure pipe might throw an exception on the very first\n * invocation and not produce any valid results. In this case LView would keep holding the NO_CHANGE\n * value. The NO_CHANGE is not something that we can use in expressions / bindings thus we convert\n * it to `undefined`.\n */\n\n\nfunction getPureFunctionReturnValue(lView, returnValueIndex) {\n  ngDevMode && assertIndexInRange(lView, returnValueIndex);\n  var lastReturnValue = lView[returnValueIndex];\n  return lastReturnValue === NO_CHANGE ? undefined : lastReturnValue;\n}\n/**\n * If the value of the provided exp has changed, calls the pure function to return\n * an updated value. Or if the value has not changed, returns cached value.\n *\n * @param lView LView in which the function is being executed.\n * @param bindingRoot Binding root index.\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn Function that returns an updated value\n * @param exp Updated expression value\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n */\n\n\nfunction pureFunction1Internal(lView, bindingRoot, slotOffset, pureFn, exp, thisArg) {\n  var bindingIndex = bindingRoot + slotOffset;\n  return bindingUpdated(lView, bindingIndex, exp) ? updateBinding(lView, bindingIndex + 1, thisArg ? pureFn.call(thisArg, exp) : pureFn(exp)) : getPureFunctionReturnValue(lView, bindingIndex + 1);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param lView LView in which the function is being executed.\n * @param bindingRoot Binding root index.\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n */\n\n\nfunction pureFunction2Internal(lView, bindingRoot, slotOffset, pureFn, exp1, exp2, thisArg) {\n  var bindingIndex = bindingRoot + slotOffset;\n  return bindingUpdated2(lView, bindingIndex, exp1, exp2) ? updateBinding(lView, bindingIndex + 2, thisArg ? pureFn.call(thisArg, exp1, exp2) : pureFn(exp1, exp2)) : getPureFunctionReturnValue(lView, bindingIndex + 2);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param lView LView in which the function is being executed.\n * @param bindingRoot Binding root index.\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n */\n\n\nfunction pureFunction3Internal(lView, bindingRoot, slotOffset, pureFn, exp1, exp2, exp3, thisArg) {\n  var bindingIndex = bindingRoot + slotOffset;\n  return bindingUpdated3(lView, bindingIndex, exp1, exp2, exp3) ? updateBinding(lView, bindingIndex + 3, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3) : pureFn(exp1, exp2, exp3)) : getPureFunctionReturnValue(lView, bindingIndex + 3);\n}\n/**\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param lView LView in which the function is being executed.\n * @param bindingRoot Binding root index.\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn\n * @param exp1\n * @param exp2\n * @param exp3\n * @param exp4\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n *\n */\n\n\nfunction pureFunction4Internal(lView, bindingRoot, slotOffset, pureFn, exp1, exp2, exp3, exp4, thisArg) {\n  var bindingIndex = bindingRoot + slotOffset;\n  return bindingUpdated4(lView, bindingIndex, exp1, exp2, exp3, exp4) ? updateBinding(lView, bindingIndex + 4, thisArg ? pureFn.call(thisArg, exp1, exp2, exp3, exp4) : pureFn(exp1, exp2, exp3, exp4)) : getPureFunctionReturnValue(lView, bindingIndex + 4);\n}\n/**\n * pureFunction instruction that can support any number of bindings.\n *\n * If the value of any provided exp has changed, calls the pure function to return\n * an updated value. Or if no values have changed, returns cached value.\n *\n * @param lView LView in which the function is being executed.\n * @param bindingRoot Binding root index.\n * @param slotOffset the offset from binding root to the reserved slot\n * @param pureFn A pure function that takes binding values and builds an object or array\n * containing those values.\n * @param exps An array of binding values\n * @param thisArg Optional calling context of pureFn\n * @returns Updated or cached value\n */\n\n\nfunction pureFunctionVInternal(lView, bindingRoot, slotOffset, pureFn, exps, thisArg) {\n  var bindingIndex = bindingRoot + slotOffset;\n  var different = false;\n\n  for (var i = 0; i < exps.length; i++) {\n    bindingUpdated(lView, bindingIndex++, exps[i]) && (different = true);\n  }\n\n  return different ? updateBinding(lView, bindingIndex, pureFn.apply(thisArg, exps)) : getPureFunctionReturnValue(lView, bindingIndex);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Create a pipe.\n *\n * @param index Pipe index where the pipe will be stored.\n * @param pipeName The name of the pipe\n * @returns T the instance of the pipe.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵpipe(index, pipeName) {\n  var tView = getTView();\n  var pipeDef;\n  var adjustedIndex = index + HEADER_OFFSET;\n\n  if (tView.firstCreatePass) {\n    pipeDef = getPipeDef$1(pipeName, tView.pipeRegistry);\n    tView.data[adjustedIndex] = pipeDef;\n\n    if (pipeDef.onDestroy) {\n      (tView.destroyHooks || (tView.destroyHooks = [])).push(adjustedIndex, pipeDef.onDestroy);\n    }\n  } else {\n    pipeDef = tView.data[adjustedIndex];\n  }\n\n  var pipeFactory = pipeDef.factory || (pipeDef.factory = getFactoryDef(pipeDef.type, true));\n  var previousInjectImplementation = setInjectImplementation(ɵɵdirectiveInject);\n\n  try {\n    // DI for pipes is supposed to behave like directives when placed on a component\n    // host node, which means that we have to disable access to `viewProviders`.\n    var previousIncludeViewProviders = setIncludeViewProviders(false);\n    var pipeInstance = pipeFactory();\n    setIncludeViewProviders(previousIncludeViewProviders);\n    store(tView, getLView(), adjustedIndex, pipeInstance);\n    return pipeInstance;\n  } finally {\n    // we have to restore the injector implementation in finally, just in case the creation of the\n    // pipe throws an error.\n    setInjectImplementation(previousInjectImplementation);\n  }\n}\n/**\n * Searches the pipe registry for a pipe with the given name. If one is found,\n * returns the pipe. Otherwise, an error is thrown because the pipe cannot be resolved.\n *\n * @param name Name of pipe to resolve\n * @param registry Full list of available pipes\n * @returns Matching PipeDef\n */\n\n\nfunction getPipeDef$1(name, registry) {\n  if (registry) {\n    for (var i = registry.length - 1; i >= 0; i--) {\n      var _pipeDef = registry[i];\n\n      if (name === _pipeDef.name) {\n        return _pipeDef;\n      }\n    }\n  }\n\n  throw new RuntimeError(\"302\"\n  /* PIPE_NOT_FOUND */\n  , \"The pipe '\".concat(name, \"' could not be found!\"));\n}\n/**\n * Invokes a pipe with 1 arguments.\n *\n * This instruction acts as a guard to {@link PipeTransform#transform} invoking\n * the pipe only when an input to the pipe changes.\n *\n * @param index Pipe index where the pipe was stored on creation.\n * @param slotOffset the offset in the reserved slot space\n * @param v1 1st argument to {@link PipeTransform#transform}.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵpipeBind1(index, slotOffset, v1) {\n  var adjustedIndex = index + HEADER_OFFSET;\n  var lView = getLView();\n  var pipeInstance = load(lView, adjustedIndex);\n  return unwrapValue$1(lView, isPure(lView, adjustedIndex) ? pureFunction1Internal(lView, getBindingRoot(), slotOffset, pipeInstance.transform, v1, pipeInstance) : pipeInstance.transform(v1));\n}\n/**\n * Invokes a pipe with 2 arguments.\n *\n * This instruction acts as a guard to {@link PipeTransform#transform} invoking\n * the pipe only when an input to the pipe changes.\n *\n * @param index Pipe index where the pipe was stored on creation.\n * @param slotOffset the offset in the reserved slot space\n * @param v1 1st argument to {@link PipeTransform#transform}.\n * @param v2 2nd argument to {@link PipeTransform#transform}.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵpipeBind2(index, slotOffset, v1, v2) {\n  var adjustedIndex = index + HEADER_OFFSET;\n  var lView = getLView();\n  var pipeInstance = load(lView, adjustedIndex);\n  return unwrapValue$1(lView, isPure(lView, adjustedIndex) ? pureFunction2Internal(lView, getBindingRoot(), slotOffset, pipeInstance.transform, v1, v2, pipeInstance) : pipeInstance.transform(v1, v2));\n}\n/**\n * Invokes a pipe with 3 arguments.\n *\n * This instruction acts as a guard to {@link PipeTransform#transform} invoking\n * the pipe only when an input to the pipe changes.\n *\n * @param index Pipe index where the pipe was stored on creation.\n * @param slotOffset the offset in the reserved slot space\n * @param v1 1st argument to {@link PipeTransform#transform}.\n * @param v2 2nd argument to {@link PipeTransform#transform}.\n * @param v3 4rd argument to {@link PipeTransform#transform}.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵpipeBind3(index, slotOffset, v1, v2, v3) {\n  var adjustedIndex = index + HEADER_OFFSET;\n  var lView = getLView();\n  var pipeInstance = load(lView, adjustedIndex);\n  return unwrapValue$1(lView, isPure(lView, adjustedIndex) ? pureFunction3Internal(lView, getBindingRoot(), slotOffset, pipeInstance.transform, v1, v2, v3, pipeInstance) : pipeInstance.transform(v1, v2, v3));\n}\n/**\n * Invokes a pipe with 4 arguments.\n *\n * This instruction acts as a guard to {@link PipeTransform#transform} invoking\n * the pipe only when an input to the pipe changes.\n *\n * @param index Pipe index where the pipe was stored on creation.\n * @param slotOffset the offset in the reserved slot space\n * @param v1 1st argument to {@link PipeTransform#transform}.\n * @param v2 2nd argument to {@link PipeTransform#transform}.\n * @param v3 3rd argument to {@link PipeTransform#transform}.\n * @param v4 4th argument to {@link PipeTransform#transform}.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵpipeBind4(index, slotOffset, v1, v2, v3, v4) {\n  var adjustedIndex = index + HEADER_OFFSET;\n  var lView = getLView();\n  var pipeInstance = load(lView, adjustedIndex);\n  return unwrapValue$1(lView, isPure(lView, adjustedIndex) ? pureFunction4Internal(lView, getBindingRoot(), slotOffset, pipeInstance.transform, v1, v2, v3, v4, pipeInstance) : pipeInstance.transform(v1, v2, v3, v4));\n}\n/**\n * Invokes a pipe with variable number of arguments.\n *\n * This instruction acts as a guard to {@link PipeTransform#transform} invoking\n * the pipe only when an input to the pipe changes.\n *\n * @param index Pipe index where the pipe was stored on creation.\n * @param slotOffset the offset in the reserved slot space\n * @param values Array of arguments to pass to {@link PipeTransform#transform} method.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵpipeBindV(index, slotOffset, values) {\n  var adjustedIndex = index + HEADER_OFFSET;\n  var lView = getLView();\n  var pipeInstance = load(lView, adjustedIndex);\n  return unwrapValue$1(lView, isPure(lView, adjustedIndex) ? pureFunctionVInternal(lView, getBindingRoot(), slotOffset, pipeInstance.transform, values, pipeInstance) : pipeInstance.transform.apply(pipeInstance, values));\n}\n\nfunction isPure(lView, index) {\n  return lView[TVIEW].data[index].pure;\n}\n/**\n * Unwrap the output of a pipe transformation.\n * In order to trick change detection into considering that the new value is always different from\n * the old one, the old value is overwritten by NO_CHANGE.\n *\n * @param newValue the pipe transformation output.\n */\n\n\nfunction unwrapValue$1(lView, newValue) {\n  if (WrappedValue.isWrapped(newValue)) {\n    newValue = WrappedValue.unwrap(newValue); // The NO_CHANGE value needs to be written at the index where the impacted binding value is\n    // stored\n\n    var bindingToInvalidateIdx = getBindingIndex();\n    lView[bindingToInvalidateIdx] = NO_CHANGE;\n  }\n\n  return newValue;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar EventEmitter_ = /*#__PURE__*/function (_Subject) {\n  _inherits(EventEmitter_, _Subject);\n\n  var _super19 = _createSuper(EventEmitter_);\n\n  function EventEmitter_() {\n    var _this20;\n\n    var isAsync = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;\n\n    _classCallCheck(this, EventEmitter_);\n\n    _this20 = _super19.call(this);\n    _this20.__isAsync = isAsync;\n    return _this20;\n  }\n\n  _createClass2(EventEmitter_, [{\n    key: \"emit\",\n    value: function emit(value) {\n      _get(_getPrototypeOf(EventEmitter_.prototype), \"next\", this).call(this, value);\n    }\n  }, {\n    key: \"subscribe\",\n    value: function subscribe(generatorOrNext, error, complete) {\n      var schedulerFn;\n\n      var errorFn = function errorFn(err) {\n        return null;\n      };\n\n      var completeFn = function completeFn() {\n        return null;\n      };\n\n      if (generatorOrNext && _typeof(generatorOrNext) === 'object') {\n        schedulerFn = this.__isAsync ? function (value) {\n          setTimeout(function () {\n            return generatorOrNext.next(value);\n          });\n        } : function (value) {\n          generatorOrNext.next(value);\n        };\n\n        if (generatorOrNext.error) {\n          errorFn = this.__isAsync ? function (err) {\n            setTimeout(function () {\n              return generatorOrNext.error(err);\n            });\n          } : function (err) {\n            generatorOrNext.error(err);\n          };\n        }\n\n        if (generatorOrNext.complete) {\n          completeFn = this.__isAsync ? function () {\n            setTimeout(function () {\n              return generatorOrNext.complete();\n            });\n          } : function () {\n            generatorOrNext.complete();\n          };\n        }\n      } else {\n        schedulerFn = this.__isAsync ? function (value) {\n          setTimeout(function () {\n            return generatorOrNext(value);\n          });\n        } : function (value) {\n          generatorOrNext(value);\n        };\n\n        if (error) {\n          errorFn = this.__isAsync ? function (err) {\n            setTimeout(function () {\n              return error(err);\n            });\n          } : function (err) {\n            error(err);\n          };\n        }\n\n        if (complete) {\n          completeFn = this.__isAsync ? function () {\n            setTimeout(function () {\n              return complete();\n            });\n          } : function () {\n            complete();\n          };\n        }\n      }\n\n      var sink = _get(_getPrototypeOf(EventEmitter_.prototype), \"subscribe\", this).call(this, schedulerFn, errorFn, completeFn);\n\n      if (generatorOrNext instanceof Subscription) {\n        generatorOrNext.add(sink);\n      }\n\n      return sink;\n    }\n  }]);\n\n  return EventEmitter_;\n}(Subject);\n/**\n * @publicApi\n */\n\n\nvar EventEmitter = EventEmitter_;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nfunction symbolIterator() {\n  return this._results[getSymbolIterator()]();\n}\n/**\n * An unmodifiable list of items that Angular keeps up to date when the state\n * of the application changes.\n *\n * The type of object that {@link ViewChildren}, {@link ContentChildren}, and {@link QueryList}\n * provide.\n *\n * Implements an iterable interface, therefore it can be used in both ES6\n * javascript `for (var i of items)` loops as well as in Angular templates with\n * `*ngFor=\"let i of myList\"`.\n *\n * Changes can be observed by subscribing to the changes `Observable`.\n *\n * NOTE: In the future this class will implement an `Observable` interface.\n *\n * @usageNotes\n * ### Example\n * ```typescript\n * @Component({...})\n * class Container {\n *   @ViewChildren(Item) items:QueryList<Item>;\n * }\n * ```\n *\n * @publicApi\n */\n\n\nvar QueryList = /*#__PURE__*/function () {\n  function QueryList() {\n    _classCallCheck(this, QueryList);\n\n    this.dirty = true;\n    this._results = [];\n    this.changes = new EventEmitter();\n    this.length = 0; // This function should be declared on the prototype, but doing so there will cause the class\n    // declaration to have side-effects and become not tree-shakable. For this reason we do it in\n    // the constructor.\n    // [getSymbolIterator()](): Iterator<T> { ... }\n\n    var symbol = getSymbolIterator();\n    var proto = QueryList.prototype;\n    if (!proto[symbol]) proto[symbol] = symbolIterator;\n  }\n  /**\n   * See\n   * [Array.map](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map)\n   */\n\n\n  _createClass2(QueryList, [{\n    key: \"map\",\n    value: function map(fn) {\n      return this._results.map(fn);\n    }\n    /**\n     * See\n     * [Array.filter](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter)\n     */\n\n  }, {\n    key: \"filter\",\n    value: function filter(fn) {\n      return this._results.filter(fn);\n    }\n    /**\n     * See\n     * [Array.find](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find)\n     */\n\n  }, {\n    key: \"find\",\n    value: function find(fn) {\n      return this._results.find(fn);\n    }\n    /**\n     * See\n     * [Array.reduce](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce)\n     */\n\n  }, {\n    key: \"reduce\",\n    value: function reduce(fn, init) {\n      return this._results.reduce(fn, init);\n    }\n    /**\n     * See\n     * [Array.forEach](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach)\n     */\n\n  }, {\n    key: \"forEach\",\n    value: function forEach(fn) {\n      this._results.forEach(fn);\n    }\n    /**\n     * See\n     * [Array.some](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some)\n     */\n\n  }, {\n    key: \"some\",\n    value: function some(fn) {\n      return this._results.some(fn);\n    }\n    /**\n     * Returns a copy of the internal results list as an Array.\n     */\n\n  }, {\n    key: \"toArray\",\n    value: function toArray() {\n      return this._results.slice();\n    }\n  }, {\n    key: \"toString\",\n    value: function toString() {\n      return this._results.toString();\n    }\n    /**\n     * Updates the stored data of the query list, and resets the `dirty` flag to `false`, so that\n     * on change detection, it will not notify of changes to the queries, unless a new change\n     * occurs.\n     *\n     * @param resultsTree The query results to store\n     */\n\n  }, {\n    key: \"reset\",\n    value: function reset(resultsTree) {\n      this._results = flatten(resultsTree);\n      this.dirty = false;\n      this.length = this._results.length;\n      this.last = this._results[this.length - 1];\n      this.first = this._results[0];\n    }\n    /**\n     * Triggers a change event by emitting on the `changes` {@link EventEmitter}.\n     */\n\n  }, {\n    key: \"notifyOnChanges\",\n    value: function notifyOnChanges() {\n      this.changes.emit(this);\n    }\n    /** internal */\n\n  }, {\n    key: \"setDirty\",\n    value: function setDirty() {\n      this.dirty = true;\n    }\n    /** internal */\n\n  }, {\n    key: \"destroy\",\n    value: function destroy() {\n      this.changes.complete();\n      this.changes.unsubscribe();\n    }\n  }]);\n\n  return QueryList;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\n\n\nvar unusedValueExportToPlacateAjd$7 = 1;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\n\nvar unusedValueExportToPlacateAjd$8 = 1;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar unusedValueToPlacateAjd$2 = unusedValueExportToPlacateAjd$7 + unusedValueExportToPlacateAjd$3 + unusedValueExportToPlacateAjd$4 + unusedValueExportToPlacateAjd$8;\n\nvar LQuery_ = /*#__PURE__*/function () {\n  function LQuery_(queryList) {\n    _classCallCheck(this, LQuery_);\n\n    this.queryList = queryList;\n    this.matches = null;\n  }\n\n  _createClass2(LQuery_, [{\n    key: \"clone\",\n    value: function clone() {\n      return new LQuery_(this.queryList);\n    }\n  }, {\n    key: \"setDirty\",\n    value: function setDirty() {\n      this.queryList.setDirty();\n    }\n  }]);\n\n  return LQuery_;\n}();\n\nvar LQueries_ = /*#__PURE__*/function () {\n  function LQueries_() {\n    var queries = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];\n\n    _classCallCheck(this, LQueries_);\n\n    this.queries = queries;\n  }\n\n  _createClass2(LQueries_, [{\n    key: \"createEmbeddedView\",\n    value: function createEmbeddedView(tView) {\n      var tQueries = tView.queries;\n\n      if (tQueries !== null) {\n        var noOfInheritedQueries = tView.contentQueries !== null ? tView.contentQueries[0] : tQueries.length;\n        var viewLQueries = []; // An embedded view has queries propagated from a declaration view at the beginning of the\n        // TQueries collection and up until a first content query declared in the embedded view. Only\n        // propagated LQueries are created at this point (LQuery corresponding to declared content\n        // queries will be instantiated from the content query instructions for each directive).\n\n        for (var i = 0; i < noOfInheritedQueries; i++) {\n          var tQuery = tQueries.getByIndex(i);\n          var parentLQuery = this.queries[tQuery.indexInDeclarationView];\n          viewLQueries.push(parentLQuery.clone());\n        }\n\n        return new LQueries_(viewLQueries);\n      }\n\n      return null;\n    }\n  }, {\n    key: \"insertView\",\n    value: function insertView(tView) {\n      this.dirtyQueriesWithMatches(tView);\n    }\n  }, {\n    key: \"detachView\",\n    value: function detachView(tView) {\n      this.dirtyQueriesWithMatches(tView);\n    }\n  }, {\n    key: \"dirtyQueriesWithMatches\",\n    value: function dirtyQueriesWithMatches(tView) {\n      for (var i = 0; i < this.queries.length; i++) {\n        if (getTQuery(tView, i).matches !== null) {\n          this.queries[i].setDirty();\n        }\n      }\n    }\n  }]);\n\n  return LQueries_;\n}();\n\nvar TQueryMetadata_ = /*#__PURE__*/_createClass2(function TQueryMetadata_(predicate, descendants, isStatic) {\n  var read = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;\n\n  _classCallCheck(this, TQueryMetadata_);\n\n  this.predicate = predicate;\n  this.descendants = descendants;\n  this.isStatic = isStatic;\n  this.read = read;\n});\n\nvar TQueries_ = /*#__PURE__*/function () {\n  function TQueries_() {\n    var queries = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];\n\n    _classCallCheck(this, TQueries_);\n\n    this.queries = queries;\n  }\n\n  _createClass2(TQueries_, [{\n    key: \"elementStart\",\n    value: function elementStart(tView, tNode) {\n      ngDevMode && assertFirstCreatePass(tView, 'Queries should collect results on the first template pass only');\n\n      for (var i = 0; i < this.queries.length; i++) {\n        this.queries[i].elementStart(tView, tNode);\n      }\n    }\n  }, {\n    key: \"elementEnd\",\n    value: function elementEnd(tNode) {\n      for (var i = 0; i < this.queries.length; i++) {\n        this.queries[i].elementEnd(tNode);\n      }\n    }\n  }, {\n    key: \"embeddedTView\",\n    value: function embeddedTView(tNode) {\n      var queriesForTemplateRef = null;\n\n      for (var i = 0; i < this.length; i++) {\n        var childQueryIndex = queriesForTemplateRef !== null ? queriesForTemplateRef.length : 0;\n        var tqueryClone = this.getByIndex(i).embeddedTView(tNode, childQueryIndex);\n\n        if (tqueryClone) {\n          tqueryClone.indexInDeclarationView = i;\n\n          if (queriesForTemplateRef !== null) {\n            queriesForTemplateRef.push(tqueryClone);\n          } else {\n            queriesForTemplateRef = [tqueryClone];\n          }\n        }\n      }\n\n      return queriesForTemplateRef !== null ? new TQueries_(queriesForTemplateRef) : null;\n    }\n  }, {\n    key: \"template\",\n    value: function template(tView, tNode) {\n      ngDevMode && assertFirstCreatePass(tView, 'Queries should collect results on the first template pass only');\n\n      for (var i = 0; i < this.queries.length; i++) {\n        this.queries[i].template(tView, tNode);\n      }\n    }\n  }, {\n    key: \"getByIndex\",\n    value: function getByIndex(index) {\n      ngDevMode && assertIndexInRange(this.queries, index);\n      return this.queries[index];\n    }\n  }, {\n    key: \"length\",\n    get: function get() {\n      return this.queries.length;\n    }\n  }, {\n    key: \"track\",\n    value: function track(tquery) {\n      this.queries.push(tquery);\n    }\n  }]);\n\n  return TQueries_;\n}();\n\nvar TQuery_ = /*#__PURE__*/function () {\n  function TQuery_(metadata) {\n    var nodeIndex = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : -1;\n\n    _classCallCheck(this, TQuery_);\n\n    this.metadata = metadata;\n    this.matches = null;\n    this.indexInDeclarationView = -1;\n    this.crossesNgTemplate = false;\n    /**\n     * A flag indicating if a given query still applies to nodes it is crossing. We use this flag\n     * (alongside with _declarationNodeIndex) to know when to stop applying content queries to\n     * elements in a template.\n     */\n\n    this._appliesToNextNode = true;\n    this._declarationNodeIndex = nodeIndex;\n  }\n\n  _createClass2(TQuery_, [{\n    key: \"elementStart\",\n    value: function elementStart(tView, tNode) {\n      if (this.isApplyingToNode(tNode)) {\n        this.matchTNode(tView, tNode);\n      }\n    }\n  }, {\n    key: \"elementEnd\",\n    value: function elementEnd(tNode) {\n      if (this._declarationNodeIndex === tNode.index) {\n        this._appliesToNextNode = false;\n      }\n    }\n  }, {\n    key: \"template\",\n    value: function template(tView, tNode) {\n      this.elementStart(tView, tNode);\n    }\n  }, {\n    key: \"embeddedTView\",\n    value: function embeddedTView(tNode, childQueryIndex) {\n      if (this.isApplyingToNode(tNode)) {\n        this.crossesNgTemplate = true; // A marker indicating a `<ng-template>` element (a placeholder for query results from\n        // embedded views created based on this `<ng-template>`).\n\n        this.addMatch(-tNode.index, childQueryIndex);\n        return new TQuery_(this.metadata);\n      }\n\n      return null;\n    }\n  }, {\n    key: \"isApplyingToNode\",\n    value: function isApplyingToNode(tNode) {\n      if (this._appliesToNextNode && this.metadata.descendants === false) {\n        var declarationNodeIdx = this._declarationNodeIndex;\n        var parent = tNode.parent; // Determine if a given TNode is a \"direct\" child of a node on which a content query was\n        // declared (only direct children of query's host node can match with the descendants: false\n        // option). There are 3 main use-case / conditions to consider here:\n        // - <needs-target><i #target></i></needs-target>: here <i #target> parent node is a query\n        // host node;\n        // - <needs-target><ng-template [ngIf]=\"true\"><i #target></i></ng-template></needs-target>:\n        // here <i #target> parent node is null;\n        // - <needs-target><ng-container><i #target></i></ng-container></needs-target>: here we need\n        // to go past `<ng-container>` to determine <i #target> parent node (but we shouldn't traverse\n        // up past the query's host node!).\n\n        while (parent !== null && parent.type & 8\n        /* ElementContainer */\n        && parent.index !== declarationNodeIdx) {\n          parent = parent.parent;\n        }\n\n        return declarationNodeIdx === (parent !== null ? parent.index : -1);\n      }\n\n      return this._appliesToNextNode;\n    }\n  }, {\n    key: \"matchTNode\",\n    value: function matchTNode(tView, tNode) {\n      var predicate = this.metadata.predicate;\n\n      if (Array.isArray(predicate)) {\n        for (var i = 0; i < predicate.length; i++) {\n          var name = predicate[i];\n          this.matchTNodeWithReadOption(tView, tNode, getIdxOfMatchingSelector(tNode, name)); // Also try matching the name to a provider since strings can be used as DI tokens too.\n\n          this.matchTNodeWithReadOption(tView, tNode, locateDirectiveOrProvider(tNode, tView, name, false, false));\n        }\n      } else {\n        if (predicate === TemplateRef) {\n          if (tNode.type & 4\n          /* Container */\n          ) {\n            this.matchTNodeWithReadOption(tView, tNode, -1);\n          }\n        } else {\n          this.matchTNodeWithReadOption(tView, tNode, locateDirectiveOrProvider(tNode, tView, predicate, false, false));\n        }\n      }\n    }\n  }, {\n    key: \"matchTNodeWithReadOption\",\n    value: function matchTNodeWithReadOption(tView, tNode, nodeMatchIdx) {\n      if (nodeMatchIdx !== null) {\n        var read = this.metadata.read;\n\n        if (read !== null) {\n          if (read === ElementRef || read === ViewContainerRef || read === TemplateRef && tNode.type & 4\n          /* Container */\n          ) {\n            this.addMatch(tNode.index, -2);\n          } else {\n            var directiveOrProviderIdx = locateDirectiveOrProvider(tNode, tView, read, false, false);\n\n            if (directiveOrProviderIdx !== null) {\n              this.addMatch(tNode.index, directiveOrProviderIdx);\n            }\n          }\n        } else {\n          this.addMatch(tNode.index, nodeMatchIdx);\n        }\n      }\n    }\n  }, {\n    key: \"addMatch\",\n    value: function addMatch(tNodeIdx, matchIdx) {\n      if (this.matches === null) {\n        this.matches = [tNodeIdx, matchIdx];\n      } else {\n        this.matches.push(tNodeIdx, matchIdx);\n      }\n    }\n  }]);\n\n  return TQuery_;\n}();\n/**\n * Iterates over local names for a given node and returns directive index\n * (or -1 if a local name points to an element).\n *\n * @param tNode static data of a node to check\n * @param selector selector to match\n * @returns directive index, -1 or null if a selector didn't match any of the local names\n */\n\n\nfunction getIdxOfMatchingSelector(tNode, selector) {\n  var localNames = tNode.localNames;\n\n  if (localNames !== null) {\n    for (var i = 0; i < localNames.length; i += 2) {\n      if (localNames[i] === selector) {\n        return localNames[i + 1];\n      }\n    }\n  }\n\n  return null;\n}\n\nfunction createResultByTNodeType(tNode, currentView) {\n  if (tNode.type & (3\n  /* AnyRNode */\n  | 8\n  /* ElementContainer */\n  )) {\n    return createElementRef(tNode, currentView);\n  } else if (tNode.type & 4\n  /* Container */\n  ) {\n    return createTemplateRef(tNode, currentView);\n  }\n\n  return null;\n}\n\nfunction createResultForNode(lView, tNode, matchingIdx, read) {\n  if (matchingIdx === -1) {\n    // if read token and / or strategy is not specified, detect it using appropriate tNode type\n    return createResultByTNodeType(tNode, lView);\n  } else if (matchingIdx === -2) {\n    // read a special token from a node injector\n    return createSpecialToken(lView, tNode, read);\n  } else {\n    // read a token\n    return getNodeInjectable(lView, lView[TVIEW], matchingIdx, tNode);\n  }\n}\n\nfunction createSpecialToken(lView, tNode, read) {\n  if (read === ElementRef) {\n    return createElementRef(tNode, lView);\n  } else if (read === TemplateRef) {\n    return createTemplateRef(tNode, lView);\n  } else if (read === ViewContainerRef) {\n    ngDevMode && assertTNodeType(tNode, 3\n    /* AnyRNode */\n    | 12\n    /* AnyContainer */\n    );\n    return createContainerRef(tNode, lView);\n  } else {\n    ngDevMode && throwError(\"Special token to read should be one of ElementRef, TemplateRef or ViewContainerRef but got \".concat(stringify(read), \".\"));\n  }\n}\n/**\n * A helper function that creates query results for a given view. This function is meant to do the\n * processing once and only once for a given view instance (a set of results for a given view\n * doesn't change).\n */\n\n\nfunction materializeViewResults(tView, lView, tQuery, queryIndex) {\n  var lQuery = lView[QUERIES].queries[queryIndex];\n\n  if (lQuery.matches === null) {\n    var tViewData = tView.data;\n    var tQueryMatches = tQuery.matches;\n    var result = [];\n\n    for (var i = 0; i < tQueryMatches.length; i += 2) {\n      var matchedNodeIdx = tQueryMatches[i];\n\n      if (matchedNodeIdx < 0) {\n        // we at the <ng-template> marker which might have results in views created based on this\n        // <ng-template> - those results will be in separate views though, so here we just leave\n        // null as a placeholder\n        result.push(null);\n      } else {\n        ngDevMode && assertIndexInRange(tViewData, matchedNodeIdx);\n        var tNode = tViewData[matchedNodeIdx];\n        result.push(createResultForNode(lView, tNode, tQueryMatches[i + 1], tQuery.metadata.read));\n      }\n    }\n\n    lQuery.matches = result;\n  }\n\n  return lQuery.matches;\n}\n/**\n * A helper function that collects (already materialized) query results from a tree of views,\n * starting with a provided LView.\n */\n\n\nfunction collectQueryResults(tView, lView, queryIndex, result) {\n  var tQuery = tView.queries.getByIndex(queryIndex);\n  var tQueryMatches = tQuery.matches;\n\n  if (tQueryMatches !== null) {\n    var lViewResults = materializeViewResults(tView, lView, tQuery, queryIndex);\n\n    for (var i = 0; i < tQueryMatches.length; i += 2) {\n      var tNodeIdx = tQueryMatches[i];\n\n      if (tNodeIdx > 0) {\n        result.push(lViewResults[i / 2]);\n      } else {\n        var childQueryIndex = tQueryMatches[i + 1];\n        var declarationLContainer = lView[-tNodeIdx];\n        ngDevMode && assertLContainer(declarationLContainer); // collect matches for views inserted in this container\n\n        for (var _i7 = CONTAINER_HEADER_OFFSET; _i7 < declarationLContainer.length; _i7++) {\n          var embeddedLView = declarationLContainer[_i7];\n\n          if (embeddedLView[DECLARATION_LCONTAINER] === embeddedLView[PARENT]) {\n            collectQueryResults(embeddedLView[TVIEW], embeddedLView, childQueryIndex, result);\n          }\n        } // collect matches for views created from this declaration container and inserted into\n        // different containers\n\n\n        if (declarationLContainer[MOVED_VIEWS] !== null) {\n          var embeddedLViews = declarationLContainer[MOVED_VIEWS];\n\n          for (var _i8 = 0; _i8 < embeddedLViews.length; _i8++) {\n            var _embeddedLView = embeddedLViews[_i8];\n            collectQueryResults(_embeddedLView[TVIEW], _embeddedLView, childQueryIndex, result);\n          }\n        }\n      }\n    }\n  }\n\n  return result;\n}\n/**\n * Refreshes a query by combining matches from all active views and removing matches from deleted\n * views.\n *\n * @returns `true` if a query got dirty during change detection or if this is a static query\n * resolving in creation mode, `false` otherwise.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵqueryRefresh(queryList) {\n  var lView = getLView();\n  var tView = getTView();\n  var queryIndex = getCurrentQueryIndex();\n  setCurrentQueryIndex(queryIndex + 1);\n  var tQuery = getTQuery(tView, queryIndex);\n\n  if (queryList.dirty && isCreationMode(lView) === tQuery.metadata.isStatic) {\n    if (tQuery.matches === null) {\n      queryList.reset([]);\n    } else {\n      var result = tQuery.crossesNgTemplate ? collectQueryResults(tView, lView, queryIndex, []) : materializeViewResults(tView, lView, tQuery, queryIndex);\n      queryList.reset(result);\n      queryList.notifyOnChanges();\n    }\n\n    return true;\n  }\n\n  return false;\n}\n/**\n * Creates new QueryList for a static view query.\n *\n * @param predicate The type for which the query will search\n * @param descend Whether or not to descend into children\n * @param read What to save in the query\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵstaticViewQuery(predicate, descend, read) {\n  viewQueryInternal(getTView(), getLView(), predicate, descend, read, true);\n}\n/**\n * Creates new QueryList, stores the reference in LView and returns QueryList.\n *\n * @param predicate The type for which the query will search\n * @param descend Whether or not to descend into children\n * @param read What to save in the query\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵviewQuery(predicate, descend, read) {\n  viewQueryInternal(getTView(), getLView(), predicate, descend, read, false);\n}\n\nfunction viewQueryInternal(tView, lView, predicate, descend, read, isStatic) {\n  if (tView.firstCreatePass) {\n    createTQuery(tView, new TQueryMetadata_(predicate, descend, isStatic, read), -1);\n\n    if (isStatic) {\n      tView.staticViewQueries = true;\n    }\n  }\n\n  createLQuery(tView, lView);\n}\n/**\n * Registers a QueryList, associated with a content query, for later refresh (part of a view\n * refresh).\n *\n * @param directiveIndex Current directive index\n * @param predicate The type for which the query will search\n * @param descend Whether or not to descend into children\n * @param read What to save in the query\n * @returns QueryList<T>\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵcontentQuery(directiveIndex, predicate, descend, read) {\n  contentQueryInternal(getTView(), getLView(), predicate, descend, read, false, getCurrentTNode(), directiveIndex);\n}\n/**\n * Registers a QueryList, associated with a static content query, for later refresh\n * (part of a view refresh).\n *\n * @param directiveIndex Current directive index\n * @param predicate The type for which the query will search\n * @param descend Whether or not to descend into children\n * @param read What to save in the query\n * @returns QueryList<T>\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵstaticContentQuery(directiveIndex, predicate, descend, read) {\n  contentQueryInternal(getTView(), getLView(), predicate, descend, read, true, getCurrentTNode(), directiveIndex);\n}\n\nfunction contentQueryInternal(tView, lView, predicate, descend, read, isStatic, tNode, directiveIndex) {\n  if (tView.firstCreatePass) {\n    createTQuery(tView, new TQueryMetadata_(predicate, descend, isStatic, read), tNode.index);\n    saveContentQueryAndDirectiveIndex(tView, directiveIndex);\n\n    if (isStatic) {\n      tView.staticContentQueries = true;\n    }\n  }\n\n  createLQuery(tView, lView);\n}\n/**\n * Loads a QueryList corresponding to the current view or content query.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵloadQuery() {\n  return loadQueryInternal(getLView(), getCurrentQueryIndex());\n}\n\nfunction loadQueryInternal(lView, queryIndex) {\n  ngDevMode && assertDefined(lView[QUERIES], 'LQueries should be defined when trying to load a query');\n  ngDevMode && assertIndexInRange(lView[QUERIES].queries, queryIndex);\n  return lView[QUERIES].queries[queryIndex].queryList;\n}\n\nfunction createLQuery(tView, lView) {\n  var queryList = new QueryList();\n  storeCleanupWithContext(tView, lView, queryList, queryList.destroy);\n  if (lView[QUERIES] === null) lView[QUERIES] = new LQueries_();\n  lView[QUERIES].queries.push(new LQuery_(queryList));\n}\n\nfunction createTQuery(tView, metadata, nodeIndex) {\n  if (tView.queries === null) tView.queries = new TQueries_();\n  tView.queries.track(new TQuery_(metadata, nodeIndex));\n}\n\nfunction saveContentQueryAndDirectiveIndex(tView, directiveIndex) {\n  var tViewContentQueries = tView.contentQueries || (tView.contentQueries = []);\n  var lastSavedDirectiveIndex = tViewContentQueries.length ? tViewContentQueries[tViewContentQueries.length - 1] : -1;\n\n  if (directiveIndex !== lastSavedDirectiveIndex) {\n    tViewContentQueries.push(tView.queries.length - 1, directiveIndex);\n  }\n}\n\nfunction getTQuery(tView, index) {\n  ngDevMode && assertDefined(tView.queries, 'TQueries must be defined to retrieve a TQuery');\n  return tView.queries.getByIndex(index);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Retrieves `TemplateRef` instance from `Injector` when a local reference is placed on the\n * `<ng-template>` element.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵtemplateRefExtractor(tNode, lView) {\n  return createTemplateRef(tNode, lView);\n}\n/**\n * Returns the appropriate `ChangeDetectorRef` for a pipe.\n *\n * @codeGenApi\n */\n\n\nfunction ɵɵinjectPipeChangeDetectorRef() {\n  var flags = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : InjectFlags.Default;\n  var value = injectChangeDetectorRef(true);\n\n  if (value == null && !(flags & InjectFlags.Optional)) {\n    throwProviderNotFoundError('ChangeDetectorRef');\n  } else {\n    return value;\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ɵ0$c = function ɵ0$c() {\n  return {\n    'ɵɵattribute': ɵɵattribute,\n    'ɵɵattributeInterpolate1': ɵɵattributeInterpolate1,\n    'ɵɵattributeInterpolate2': ɵɵattributeInterpolate2,\n    'ɵɵattributeInterpolate3': ɵɵattributeInterpolate3,\n    'ɵɵattributeInterpolate4': ɵɵattributeInterpolate4,\n    'ɵɵattributeInterpolate5': ɵɵattributeInterpolate5,\n    'ɵɵattributeInterpolate6': ɵɵattributeInterpolate6,\n    'ɵɵattributeInterpolate7': ɵɵattributeInterpolate7,\n    'ɵɵattributeInterpolate8': ɵɵattributeInterpolate8,\n    'ɵɵattributeInterpolateV': ɵɵattributeInterpolateV,\n    'ɵɵdefineComponent': ɵɵdefineComponent,\n    'ɵɵdefineDirective': ɵɵdefineDirective,\n    'ɵɵdefineInjectable': ɵɵdefineInjectable,\n    'ɵɵdefineInjector': ɵɵdefineInjector,\n    'ɵɵdefineNgModule': ɵɵdefineNgModule,\n    'ɵɵdefinePipe': ɵɵdefinePipe,\n    'ɵɵdirectiveInject': ɵɵdirectiveInject,\n    'ɵɵgetFactoryOf': ɵɵgetFactoryOf,\n    'ɵɵgetInheritedFactory': ɵɵgetInheritedFactory,\n    'ɵɵinject': ɵɵinject,\n    'ɵɵinjectAttribute': ɵɵinjectAttribute,\n    'ɵɵinvalidFactory': ɵɵinvalidFactory,\n    'ɵɵinvalidFactoryDep': ɵɵinvalidFactoryDep,\n    'ɵɵinjectPipeChangeDetectorRef': ɵɵinjectPipeChangeDetectorRef,\n    'ɵɵtemplateRefExtractor': ɵɵtemplateRefExtractor,\n    'ɵɵNgOnChangesFeature': ɵɵNgOnChangesFeature,\n    'ɵɵProvidersFeature': ɵɵProvidersFeature,\n    'ɵɵCopyDefinitionFeature': ɵɵCopyDefinitionFeature,\n    'ɵɵInheritDefinitionFeature': ɵɵInheritDefinitionFeature,\n    'ɵɵnextContext': ɵɵnextContext,\n    'ɵɵnamespaceHTML': ɵɵnamespaceHTML,\n    'ɵɵnamespaceMathML': ɵɵnamespaceMathML,\n    'ɵɵnamespaceSVG': ɵɵnamespaceSVG,\n    'ɵɵenableBindings': ɵɵenableBindings,\n    'ɵɵdisableBindings': ɵɵdisableBindings,\n    'ɵɵelementStart': ɵɵelementStart,\n    'ɵɵelementEnd': ɵɵelementEnd,\n    'ɵɵelement': ɵɵelement,\n    'ɵɵelementContainerStart': ɵɵelementContainerStart,\n    'ɵɵelementContainerEnd': ɵɵelementContainerEnd,\n    'ɵɵelementContainer': ɵɵelementContainer,\n    'ɵɵpureFunction0': ɵɵpureFunction0,\n    'ɵɵpureFunction1': ɵɵpureFunction1,\n    'ɵɵpureFunction2': ɵɵpureFunction2,\n    'ɵɵpureFunction3': ɵɵpureFunction3,\n    'ɵɵpureFunction4': ɵɵpureFunction4,\n    'ɵɵpureFunction5': ɵɵpureFunction5,\n    'ɵɵpureFunction6': ɵɵpureFunction6,\n    'ɵɵpureFunction7': ɵɵpureFunction7,\n    'ɵɵpureFunction8': ɵɵpureFunction8,\n    'ɵɵpureFunctionV': ɵɵpureFunctionV,\n    'ɵɵgetCurrentView': ɵɵgetCurrentView,\n    'ɵɵrestoreView': ɵɵrestoreView,\n    'ɵɵlistener': ɵɵlistener,\n    'ɵɵprojection': ɵɵprojection,\n    'ɵɵsyntheticHostProperty': ɵɵsyntheticHostProperty,\n    'ɵɵsyntheticHostListener': ɵɵsyntheticHostListener,\n    'ɵɵpipeBind1': ɵɵpipeBind1,\n    'ɵɵpipeBind2': ɵɵpipeBind2,\n    'ɵɵpipeBind3': ɵɵpipeBind3,\n    'ɵɵpipeBind4': ɵɵpipeBind4,\n    'ɵɵpipeBindV': ɵɵpipeBindV,\n    'ɵɵprojectionDef': ɵɵprojectionDef,\n    'ɵɵhostProperty': ɵɵhostProperty,\n    'ɵɵproperty': ɵɵproperty,\n    'ɵɵpropertyInterpolate': ɵɵpropertyInterpolate,\n    'ɵɵpropertyInterpolate1': ɵɵpropertyInterpolate1,\n    'ɵɵpropertyInterpolate2': ɵɵpropertyInterpolate2,\n    'ɵɵpropertyInterpolate3': ɵɵpropertyInterpolate3,\n    'ɵɵpropertyInterpolate4': ɵɵpropertyInterpolate4,\n    'ɵɵpropertyInterpolate5': ɵɵpropertyInterpolate5,\n    'ɵɵpropertyInterpolate6': ɵɵpropertyInterpolate6,\n    'ɵɵpropertyInterpolate7': ɵɵpropertyInterpolate7,\n    'ɵɵpropertyInterpolate8': ɵɵpropertyInterpolate8,\n    'ɵɵpropertyInterpolateV': ɵɵpropertyInterpolateV,\n    'ɵɵpipe': ɵɵpipe,\n    'ɵɵqueryRefresh': ɵɵqueryRefresh,\n    'ɵɵviewQuery': ɵɵviewQuery,\n    'ɵɵstaticViewQuery': ɵɵstaticViewQuery,\n    'ɵɵstaticContentQuery': ɵɵstaticContentQuery,\n    'ɵɵloadQuery': ɵɵloadQuery,\n    'ɵɵcontentQuery': ɵɵcontentQuery,\n    'ɵɵreference': ɵɵreference,\n    'ɵɵclassMap': ɵɵclassMap,\n    'ɵɵclassMapInterpolate1': ɵɵclassMapInterpolate1,\n    'ɵɵclassMapInterpolate2': ɵɵclassMapInterpolate2,\n    'ɵɵclassMapInterpolate3': ɵɵclassMapInterpolate3,\n    'ɵɵclassMapInterpolate4': ɵɵclassMapInterpolate4,\n    'ɵɵclassMapInterpolate5': ɵɵclassMapInterpolate5,\n    'ɵɵclassMapInterpolate6': ɵɵclassMapInterpolate6,\n    'ɵɵclassMapInterpolate7': ɵɵclassMapInterpolate7,\n    'ɵɵclassMapInterpolate8': ɵɵclassMapInterpolate8,\n    'ɵɵclassMapInterpolateV': ɵɵclassMapInterpolateV,\n    'ɵɵstyleMap': ɵɵstyleMap,\n    'ɵɵstyleMapInterpolate1': ɵɵstyleMapInterpolate1,\n    'ɵɵstyleMapInterpolate2': ɵɵstyleMapInterpolate2,\n    'ɵɵstyleMapInterpolate3': ɵɵstyleMapInterpolate3,\n    'ɵɵstyleMapInterpolate4': ɵɵstyleMapInterpolate4,\n    'ɵɵstyleMapInterpolate5': ɵɵstyleMapInterpolate5,\n    'ɵɵstyleMapInterpolate6': ɵɵstyleMapInterpolate6,\n    'ɵɵstyleMapInterpolate7': ɵɵstyleMapInterpolate7,\n    'ɵɵstyleMapInterpolate8': ɵɵstyleMapInterpolate8,\n    'ɵɵstyleMapInterpolateV': ɵɵstyleMapInterpolateV,\n    'ɵɵstyleProp': ɵɵstyleProp,\n    'ɵɵstylePropInterpolate1': ɵɵstylePropInterpolate1,\n    'ɵɵstylePropInterpolate2': ɵɵstylePropInterpolate2,\n    'ɵɵstylePropInterpolate3': ɵɵstylePropInterpolate3,\n    'ɵɵstylePropInterpolate4': ɵɵstylePropInterpolate4,\n    'ɵɵstylePropInterpolate5': ɵɵstylePropInterpolate5,\n    'ɵɵstylePropInterpolate6': ɵɵstylePropInterpolate6,\n    'ɵɵstylePropInterpolate7': ɵɵstylePropInterpolate7,\n    'ɵɵstylePropInterpolate8': ɵɵstylePropInterpolate8,\n    'ɵɵstylePropInterpolateV': ɵɵstylePropInterpolateV,\n    'ɵɵclassProp': ɵɵclassProp,\n    'ɵɵadvance': ɵɵadvance,\n    'ɵɵtemplate': ɵɵtemplate,\n    'ɵɵtext': ɵɵtext,\n    'ɵɵtextInterpolate': ɵɵtextInterpolate,\n    'ɵɵtextInterpolate1': ɵɵtextInterpolate1,\n    'ɵɵtextInterpolate2': ɵɵtextInterpolate2,\n    'ɵɵtextInterpolate3': ɵɵtextInterpolate3,\n    'ɵɵtextInterpolate4': ɵɵtextInterpolate4,\n    'ɵɵtextInterpolate5': ɵɵtextInterpolate5,\n    'ɵɵtextInterpolate6': ɵɵtextInterpolate6,\n    'ɵɵtextInterpolate7': ɵɵtextInterpolate7,\n    'ɵɵtextInterpolate8': ɵɵtextInterpolate8,\n    'ɵɵtextInterpolateV': ɵɵtextInterpolateV,\n    'ɵɵi18n': ɵɵi18n,\n    'ɵɵi18nAttributes': ɵɵi18nAttributes,\n    'ɵɵi18nExp': ɵɵi18nExp,\n    'ɵɵi18nStart': ɵɵi18nStart,\n    'ɵɵi18nEnd': ɵɵi18nEnd,\n    'ɵɵi18nApply': ɵɵi18nApply,\n    'ɵɵi18nPostprocess': ɵɵi18nPostprocess,\n    'ɵɵresolveWindow': ɵɵresolveWindow,\n    'ɵɵresolveDocument': ɵɵresolveDocument,\n    'ɵɵresolveBody': ɵɵresolveBody,\n    'ɵɵsetComponentScope': ɵɵsetComponentScope,\n    'ɵɵsetNgModuleScope': ɵɵsetNgModuleScope,\n    'ɵɵsanitizeHtml': ɵɵsanitizeHtml,\n    'ɵɵsanitizeStyle': ɵɵsanitizeStyle,\n    'ɵɵsanitizeResourceUrl': ɵɵsanitizeResourceUrl,\n    'ɵɵsanitizeScript': ɵɵsanitizeScript,\n    'ɵɵsanitizeUrl': ɵɵsanitizeUrl,\n    'ɵɵsanitizeUrlOrResourceUrl': ɵɵsanitizeUrlOrResourceUrl,\n    'ɵɵtrustConstantHtml': ɵɵtrustConstantHtml,\n    'ɵɵtrustConstantScript': ɵɵtrustConstantScript,\n    'ɵɵtrustConstantResourceUrl': ɵɵtrustConstantResourceUrl\n  };\n};\n/**\n * A mapping of the @angular/core API surface used in generated expressions to the actual symbols.\n *\n * This should be kept up to date with the public exports of @angular/core.\n */\n\n\nvar angularCoreEnv = ɵ0$c();\nvar jitOptions = null;\n\nfunction setJitOptions(options) {\n  if (jitOptions !== null) {\n    if (options.defaultEncapsulation !== jitOptions.defaultEncapsulation) {\n      ngDevMode && console.error('Provided value for `defaultEncapsulation` can not be changed once it has been set.');\n      return;\n    }\n\n    if (options.preserveWhitespaces !== jitOptions.preserveWhitespaces) {\n      ngDevMode && console.error('Provided value for `preserveWhitespaces` can not be changed once it has been set.');\n      return;\n    }\n  }\n\n  jitOptions = options;\n}\n\nfunction getJitOptions() {\n  return jitOptions;\n}\n\nfunction resetJitOptions() {\n  jitOptions = null;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar EMPTY_ARRAY$5 = [];\nvar moduleQueue = [];\n/**\n * Enqueues moduleDef to be checked later to see if scope can be set on its\n * component declarations.\n */\n\nfunction enqueueModuleForDelayedScoping(moduleType, ngModule) {\n  moduleQueue.push({\n    moduleType: moduleType,\n    ngModule: ngModule\n  });\n}\n\nvar flushingModuleQueue = false;\n/**\n * Loops over queued module definitions, if a given module definition has all of its\n * declarations resolved, it dequeues that module definition and sets the scope on\n * its declarations.\n */\n\nfunction flushModuleScopingQueueAsMuchAsPossible() {\n  if (!flushingModuleQueue) {\n    flushingModuleQueue = true;\n\n    try {\n      for (var i = moduleQueue.length - 1; i >= 0; i--) {\n        var _moduleQueue$i = moduleQueue[i],\n            moduleType = _moduleQueue$i.moduleType,\n            ngModule = _moduleQueue$i.ngModule;\n\n        if (ngModule.declarations && ngModule.declarations.every(isResolvedDeclaration)) {\n          // dequeue\n          moduleQueue.splice(i, 1);\n          setScopeOnDeclaredComponents(moduleType, ngModule);\n        }\n      }\n    } finally {\n      flushingModuleQueue = false;\n    }\n  }\n}\n/**\n * Returns truthy if a declaration has resolved. If the declaration happens to be\n * an array of declarations, it will recurse to check each declaration in that array\n * (which may also be arrays).\n */\n\n\nfunction isResolvedDeclaration(declaration) {\n  if (Array.isArray(declaration)) {\n    return declaration.every(isResolvedDeclaration);\n  }\n\n  return !!resolveForwardRef(declaration);\n}\n/**\n * Compiles a module in JIT mode.\n *\n * This function automatically gets called when a class has a `@NgModule` decorator.\n */\n\n\nfunction compileNgModule(moduleType) {\n  var ngModule = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n  compileNgModuleDefs(moduleType, ngModule); // Because we don't know if all declarations have resolved yet at the moment the\n  // NgModule decorator is executing, we're enqueueing the setting of module scope\n  // on its declarations to be run at a later time when all declarations for the module,\n  // including forward refs, have resolved.\n\n  enqueueModuleForDelayedScoping(moduleType, ngModule);\n}\n/**\n * Compiles and adds the `ɵmod` and `ɵinj` properties to the module class.\n *\n * It's possible to compile a module via this API which will allow duplicate declarations in its\n * root.\n */\n\n\nfunction compileNgModuleDefs(moduleType, ngModule) {\n  var allowDuplicateDeclarationsInRoot = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n  ngDevMode && assertDefined(moduleType, 'Required value moduleType');\n  ngDevMode && assertDefined(ngModule, 'Required value ngModule');\n  var declarations = flatten(ngModule.declarations || EMPTY_ARRAY$5);\n  var ngModuleDef = null;\n  Object.defineProperty(moduleType, NG_MOD_DEF, {\n    configurable: true,\n    get: function get() {\n      if (ngModuleDef === null) {\n        if (ngDevMode && ngModule.imports && ngModule.imports.indexOf(moduleType) > -1) {\n          // We need to assert this immediately, because allowing it to continue will cause it to\n          // go into an infinite loop before we've reached the point where we throw all the errors.\n          throw new Error(\"'\".concat(stringifyForError(moduleType), \"' module can't import itself\"));\n        }\n\n        ngModuleDef = getCompilerFacade().compileNgModule(angularCoreEnv, \"ng:///\".concat(moduleType.name, \"/\\u0275mod.js\"), {\n          type: moduleType,\n          bootstrap: flatten(ngModule.bootstrap || EMPTY_ARRAY$5).map(resolveForwardRef),\n          declarations: declarations.map(resolveForwardRef),\n          imports: flatten(ngModule.imports || EMPTY_ARRAY$5).map(resolveForwardRef).map(expandModuleWithProviders),\n          exports: flatten(ngModule.exports || EMPTY_ARRAY$5).map(resolveForwardRef).map(expandModuleWithProviders),\n          schemas: ngModule.schemas ? flatten(ngModule.schemas) : null,\n          id: ngModule.id || null\n        }); // Set `schemas` on ngModuleDef to an empty array in JIT mode to indicate that runtime\n        // should verify that there are no unknown elements in a template. In AOT mode, that check\n        // happens at compile time and `schemas` information is not present on Component and Module\n        // defs after compilation (so the check doesn't happen the second time at runtime).\n\n        if (!ngModuleDef.schemas) {\n          ngModuleDef.schemas = [];\n        }\n      }\n\n      return ngModuleDef;\n    }\n  });\n  var ngInjectorDef = null;\n  Object.defineProperty(moduleType, NG_INJ_DEF, {\n    get: function get() {\n      if (ngInjectorDef === null) {\n        ngDevMode && verifySemanticsOfNgModuleDef(moduleType, allowDuplicateDeclarationsInRoot);\n        var meta = {\n          name: moduleType.name,\n          type: moduleType,\n          deps: reflectDependencies(moduleType),\n          providers: ngModule.providers || EMPTY_ARRAY$5,\n          imports: [(ngModule.imports || EMPTY_ARRAY$5).map(resolveForwardRef), (ngModule.exports || EMPTY_ARRAY$5).map(resolveForwardRef)]\n        };\n        ngInjectorDef = getCompilerFacade().compileInjector(angularCoreEnv, \"ng:///\".concat(moduleType.name, \"/\\u0275inj.js\"), meta);\n      }\n\n      return ngInjectorDef;\n    },\n    // Make the property configurable in dev mode to allow overriding in tests\n    configurable: !!ngDevMode\n  });\n}\n\nfunction verifySemanticsOfNgModuleDef(moduleType, allowDuplicateDeclarationsInRoot, importingModule) {\n  if (verifiedNgModule.get(moduleType)) return;\n  verifiedNgModule.set(moduleType, true);\n  moduleType = resolveForwardRef(moduleType);\n  var ngModuleDef;\n\n  if (importingModule) {\n    ngModuleDef = getNgModuleDef(moduleType);\n\n    if (!ngModuleDef) {\n      throw new Error(\"Unexpected value '\".concat(moduleType.name, \"' imported by the module '\").concat(importingModule.name, \"'. Please add an @NgModule annotation.\"));\n    }\n  } else {\n    ngModuleDef = getNgModuleDef(moduleType, true);\n  }\n\n  var errors = [];\n  var declarations = maybeUnwrapFn(ngModuleDef.declarations);\n  var imports = maybeUnwrapFn(ngModuleDef.imports);\n  flatten(imports).map(unwrapModuleWithProvidersImports).forEach(function (mod) {\n    verifySemanticsOfNgModuleImport(mod, moduleType);\n    verifySemanticsOfNgModuleDef(mod, false, moduleType);\n  });\n  var exports = maybeUnwrapFn(ngModuleDef.exports);\n  declarations.forEach(verifyDeclarationsHaveDefinitions);\n  declarations.forEach(verifyDirectivesHaveSelector);\n  var combinedDeclarations = [].concat(_toConsumableArray(declarations.map(resolveForwardRef)), _toConsumableArray(flatten(imports.map(computeCombinedExports)).map(resolveForwardRef)));\n  exports.forEach(verifyExportsAreDeclaredOrReExported);\n  declarations.forEach(function (decl) {\n    return verifyDeclarationIsUnique(decl, allowDuplicateDeclarationsInRoot);\n  });\n  declarations.forEach(verifyComponentEntryComponentsIsPartOfNgModule);\n  var ngModule = getAnnotation(moduleType, 'NgModule');\n\n  if (ngModule) {\n    ngModule.imports && flatten(ngModule.imports).map(unwrapModuleWithProvidersImports).forEach(function (mod) {\n      verifySemanticsOfNgModuleImport(mod, moduleType);\n      verifySemanticsOfNgModuleDef(mod, false, moduleType);\n    });\n    ngModule.bootstrap && deepForEach(ngModule.bootstrap, verifyCorrectBootstrapType);\n    ngModule.bootstrap && deepForEach(ngModule.bootstrap, verifyComponentIsPartOfNgModule);\n    ngModule.entryComponents && deepForEach(ngModule.entryComponents, verifyComponentIsPartOfNgModule);\n  } // Throw Error if any errors were detected.\n\n\n  if (errors.length) {\n    throw new Error(errors.join('\\n'));\n  } ////////////////////////////////////////////////////////////////////////////////////////////////\n\n\n  function verifyDeclarationsHaveDefinitions(type) {\n    type = resolveForwardRef(type);\n    var def = getComponentDef(type) || getDirectiveDef(type) || getPipeDef(type);\n\n    if (!def) {\n      errors.push(\"Unexpected value '\".concat(stringifyForError(type), \"' declared by the module '\").concat(stringifyForError(moduleType), \"'. Please add a @Pipe/@Directive/@Component annotation.\"));\n    }\n  }\n\n  function verifyDirectivesHaveSelector(type) {\n    type = resolveForwardRef(type);\n    var def = getDirectiveDef(type);\n\n    if (!getComponentDef(type) && def && def.selectors.length == 0) {\n      errors.push(\"Directive \".concat(stringifyForError(type), \" has no selector, please add it!\"));\n    }\n  }\n\n  function verifyExportsAreDeclaredOrReExported(type) {\n    type = resolveForwardRef(type);\n    var kind = getComponentDef(type) && 'component' || getDirectiveDef(type) && 'directive' || getPipeDef(type) && 'pipe';\n\n    if (kind) {\n      // only checked if we are declared as Component, Directive, or Pipe\n      // Modules don't need to be declared or imported.\n      if (combinedDeclarations.lastIndexOf(type) === -1) {\n        // We are exporting something which we don't explicitly declare or import.\n        errors.push(\"Can't export \".concat(kind, \" \").concat(stringifyForError(type), \" from \").concat(stringifyForError(moduleType), \" as it was neither declared nor imported!\"));\n      }\n    }\n  }\n\n  function verifyDeclarationIsUnique(type, suppressErrors) {\n    type = resolveForwardRef(type);\n    var existingModule = ownerNgModule.get(type);\n\n    if (existingModule && existingModule !== moduleType) {\n      if (!suppressErrors) {\n        var _modules = [existingModule, moduleType].map(stringifyForError).sort();\n\n        errors.push(\"Type \".concat(stringifyForError(type), \" is part of the declarations of 2 modules: \").concat(_modules[0], \" and \").concat(_modules[1], \"! \") + \"Please consider moving \".concat(stringifyForError(type), \" to a higher module that imports \").concat(_modules[0], \" and \").concat(_modules[1], \". \") + \"You can also create a new NgModule that exports and includes \".concat(stringifyForError(type), \" then import that NgModule in \").concat(_modules[0], \" and \").concat(_modules[1], \".\"));\n      }\n    } else {\n      // Mark type as having owner.\n      ownerNgModule.set(type, moduleType);\n    }\n  }\n\n  function verifyComponentIsPartOfNgModule(type) {\n    type = resolveForwardRef(type);\n    var existingModule = ownerNgModule.get(type);\n\n    if (!existingModule) {\n      errors.push(\"Component \".concat(stringifyForError(type), \" is not part of any NgModule or the module has not been imported into your module.\"));\n    }\n  }\n\n  function verifyCorrectBootstrapType(type) {\n    type = resolveForwardRef(type);\n\n    if (!getComponentDef(type)) {\n      errors.push(\"\".concat(stringifyForError(type), \" cannot be used as an entry component.\"));\n    }\n  }\n\n  function verifyComponentEntryComponentsIsPartOfNgModule(type) {\n    type = resolveForwardRef(type);\n\n    if (getComponentDef(type)) {\n      // We know we are component\n      var component = getAnnotation(type, 'Component');\n\n      if (component && component.entryComponents) {\n        deepForEach(component.entryComponents, verifyComponentIsPartOfNgModule);\n      }\n    }\n  }\n\n  function verifySemanticsOfNgModuleImport(type, importingModule) {\n    type = resolveForwardRef(type);\n\n    if (getComponentDef(type) || getDirectiveDef(type)) {\n      throw new Error(\"Unexpected directive '\".concat(type.name, \"' imported by the module '\").concat(importingModule.name, \"'. Please add an @NgModule annotation.\"));\n    }\n\n    if (getPipeDef(type)) {\n      throw new Error(\"Unexpected pipe '\".concat(type.name, \"' imported by the module '\").concat(importingModule.name, \"'. Please add an @NgModule annotation.\"));\n    }\n  }\n}\n\nfunction unwrapModuleWithProvidersImports(typeOrWithProviders) {\n  typeOrWithProviders = resolveForwardRef(typeOrWithProviders);\n  return typeOrWithProviders.ngModule || typeOrWithProviders;\n}\n\nfunction getAnnotation(type, name) {\n  var annotation = null;\n  collect(type.__annotations__);\n  collect(type.decorators);\n  return annotation;\n\n  function collect(annotations) {\n    if (annotations) {\n      annotations.forEach(readAnnotation);\n    }\n  }\n\n  function readAnnotation(decorator) {\n    if (!annotation) {\n      var proto = Object.getPrototypeOf(decorator);\n\n      if (proto.ngMetadataName == name) {\n        annotation = decorator;\n      } else if (decorator.type) {\n        var _proto = Object.getPrototypeOf(decorator.type);\n\n        if (_proto.ngMetadataName == name) {\n          annotation = decorator.args[0];\n        }\n      }\n    }\n  }\n}\n/**\n * Keep track of compiled components. This is needed because in tests we often want to compile the\n * same component with more than one NgModule. This would cause an error unless we reset which\n * NgModule the component belongs to. We keep the list of compiled components here so that the\n * TestBed can reset it later.\n */\n\n\nvar ownerNgModule = new Map();\nvar verifiedNgModule = new Map();\n\nfunction resetCompiledComponents() {\n  ownerNgModule = new Map();\n  verifiedNgModule = new Map();\n  moduleQueue.length = 0;\n}\n/**\n * Computes the combined declarations of explicit declarations, as well as declarations inherited by\n * traversing the exports of imported modules.\n * @param type\n */\n\n\nfunction computeCombinedExports(type) {\n  type = resolveForwardRef(type);\n  var ngModuleDef = getNgModuleDef(type, true);\n  return _toConsumableArray(flatten(maybeUnwrapFn(ngModuleDef.exports).map(function (type) {\n    var ngModuleDef = getNgModuleDef(type);\n\n    if (ngModuleDef) {\n      verifySemanticsOfNgModuleDef(type, false);\n      return computeCombinedExports(type);\n    } else {\n      return type;\n    }\n  })));\n}\n/**\n * Some declared components may be compiled asynchronously, and thus may not have their\n * ɵcmp set yet. If this is the case, then a reference to the module is written into\n * the `ngSelectorScope` property of the declared type.\n */\n\n\nfunction setScopeOnDeclaredComponents(moduleType, ngModule) {\n  var declarations = flatten(ngModule.declarations || EMPTY_ARRAY$5);\n  var transitiveScopes = transitiveScopesFor(moduleType);\n  declarations.forEach(function (declaration) {\n    if (declaration.hasOwnProperty(NG_COMP_DEF)) {\n      // A `ɵcmp` field exists - go ahead and patch the component directly.\n      var component = declaration;\n      var componentDef = getComponentDef(component);\n      patchComponentDefWithScope(componentDef, transitiveScopes);\n    } else if (!declaration.hasOwnProperty(NG_DIR_DEF) && !declaration.hasOwnProperty(NG_PIPE_DEF)) {\n      // Set `ngSelectorScope` for future reference when the component compilation finishes.\n      declaration.ngSelectorScope = moduleType;\n    }\n  });\n}\n/**\n * Patch the definition of a component with directives and pipes from the compilation scope of\n * a given module.\n */\n\n\nfunction patchComponentDefWithScope(componentDef, transitiveScopes) {\n  componentDef.directiveDefs = function () {\n    return Array.from(transitiveScopes.compilation.directives).map(function (dir) {\n      return dir.hasOwnProperty(NG_COMP_DEF) ? getComponentDef(dir) : getDirectiveDef(dir);\n    }).filter(function (def) {\n      return !!def;\n    });\n  };\n\n  componentDef.pipeDefs = function () {\n    return Array.from(transitiveScopes.compilation.pipes).map(function (pipe) {\n      return getPipeDef(pipe);\n    });\n  };\n\n  componentDef.schemas = transitiveScopes.schemas; // Since we avoid Components/Directives/Pipes recompiling in case there are no overrides, we\n  // may face a problem where previously compiled defs available to a given Component/Directive\n  // are cached in TView and may become stale (in case any of these defs gets recompiled). In\n  // order to avoid this problem, we force fresh TView to be created.\n\n  componentDef.tView = null;\n}\n/**\n * Compute the pair of transitive scopes (compilation scope and exported scope) for a given module.\n *\n * This operation is memoized and the result is cached on the module's definition. This function can\n * be called on modules with components that have not fully compiled yet, but the result should not\n * be used until they have.\n *\n * @param moduleType module that transitive scope should be calculated for.\n */\n\n\nfunction transitiveScopesFor(moduleType) {\n  if (!isNgModule(moduleType)) {\n    throw new Error(\"\".concat(moduleType.name, \" does not have a module def (\\u0275mod property)\"));\n  }\n\n  var def = getNgModuleDef(moduleType);\n\n  if (def.transitiveCompileScopes !== null) {\n    return def.transitiveCompileScopes;\n  }\n\n  var scopes = {\n    schemas: def.schemas || null,\n    compilation: {\n      directives: new Set(),\n      pipes: new Set()\n    },\n    exported: {\n      directives: new Set(),\n      pipes: new Set()\n    }\n  };\n  maybeUnwrapFn(def.imports).forEach(function (imported) {\n    var importedType = imported;\n\n    if (!isNgModule(importedType)) {\n      throw new Error(\"Importing \".concat(importedType.name, \" which does not have a \\u0275mod property\"));\n    } // When this module imports another, the imported module's exported directives and pipes are\n    // added to the compilation scope of this module.\n\n\n    var importedScope = transitiveScopesFor(importedType);\n    importedScope.exported.directives.forEach(function (entry) {\n      return scopes.compilation.directives.add(entry);\n    });\n    importedScope.exported.pipes.forEach(function (entry) {\n      return scopes.compilation.pipes.add(entry);\n    });\n  });\n  maybeUnwrapFn(def.declarations).forEach(function (declared) {\n    var declaredWithDefs = declared;\n\n    if (getPipeDef(declaredWithDefs)) {\n      scopes.compilation.pipes.add(declared);\n    } else {\n      // Either declared has a ɵcmp or ɵdir, or it's a component which hasn't\n      // had its template compiled yet. In either case, it gets added to the compilation's\n      // directives.\n      scopes.compilation.directives.add(declared);\n    }\n  });\n  maybeUnwrapFn(def.exports).forEach(function (exported) {\n    var exportedType = exported; // Either the type is a module, a pipe, or a component/directive (which may not have a\n    // ɵcmp as it might be compiled asynchronously).\n\n    if (isNgModule(exportedType)) {\n      // When this module exports another, the exported module's exported directives and pipes are\n      // added to both the compilation and exported scopes of this module.\n      var exportedScope = transitiveScopesFor(exportedType);\n      exportedScope.exported.directives.forEach(function (entry) {\n        scopes.compilation.directives.add(entry);\n        scopes.exported.directives.add(entry);\n      });\n      exportedScope.exported.pipes.forEach(function (entry) {\n        scopes.compilation.pipes.add(entry);\n        scopes.exported.pipes.add(entry);\n      });\n    } else if (getPipeDef(exportedType)) {\n      scopes.exported.pipes.add(exportedType);\n    } else {\n      scopes.exported.directives.add(exportedType);\n    }\n  });\n  def.transitiveCompileScopes = scopes;\n  return scopes;\n}\n\nfunction expandModuleWithProviders(value) {\n  if (isModuleWithProviders(value)) {\n    return value.ngModule;\n  }\n\n  return value;\n}\n\nfunction isModuleWithProviders(value) {\n  return value.ngModule !== undefined;\n}\n\nfunction isNgModule(value) {\n  return !!getNgModuleDef(value);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Keep track of the compilation depth to avoid reentrancy issues during JIT compilation. This\n * matters in the following scenario:\n *\n * Consider a component 'A' that extends component 'B', both declared in module 'M'. During\n * the compilation of 'A' the definition of 'B' is requested to capture the inheritance chain,\n * potentially triggering compilation of 'B'. If this nested compilation were to trigger\n * `flushModuleScopingQueueAsMuchAsPossible` it may happen that module 'M' is still pending in the\n * queue, resulting in 'A' and 'B' to be patched with the NgModule scope. As the compilation of\n * 'A' is still in progress, this would introduce a circular dependency on its compilation. To avoid\n * this issue, the module scope queue is only flushed for compilations at the depth 0, to ensure\n * all compilations have finished.\n */\n\n\nvar compilationDepth = 0;\n/**\n * Compile an Angular component according to its decorator metadata, and patch the resulting\n * component def (ɵcmp) onto the component type.\n *\n * Compilation may be asynchronous (due to the need to resolve URLs for the component template or\n * other resources, for example). In the event that compilation is not immediate, `compileComponent`\n * will enqueue resource resolution into a global queue and will fail to return the `ɵcmp`\n * until the global queue has been resolved with a call to `resolveComponentResources`.\n */\n\nfunction compileComponent(type, metadata) {\n  // Initialize ngDevMode. This must be the first statement in compileComponent.\n  // See the `initNgDevMode` docstring for more information.\n  (typeof ngDevMode === 'undefined' || ngDevMode) && initNgDevMode();\n  var ngComponentDef = null; // Metadata may have resources which need to be resolved.\n\n  maybeQueueResolutionOfComponentResources(type, metadata); // Note that we're using the same function as `Directive`, because that's only subset of metadata\n  // that we need to create the ngFactoryDef. We're avoiding using the component metadata\n  // because we'd have to resolve the asynchronous templates.\n\n  addDirectiveFactoryDef(type, metadata);\n  Object.defineProperty(type, NG_COMP_DEF, {\n    get: function get() {\n      if (ngComponentDef === null) {\n        var compiler = getCompilerFacade();\n\n        if (componentNeedsResolution(metadata)) {\n          var error = [\"Component '\".concat(type.name, \"' is not resolved:\")];\n\n          if (metadata.templateUrl) {\n            error.push(\" - templateUrl: \".concat(metadata.templateUrl));\n          }\n\n          if (metadata.styleUrls && metadata.styleUrls.length) {\n            error.push(\" - styleUrls: \".concat(JSON.stringify(metadata.styleUrls)));\n          }\n\n          error.push(\"Did you run and wait for 'resolveComponentResources()'?\");\n          throw new Error(error.join('\\n'));\n        } // This const was called `jitOptions` previously but had to be renamed to `options` because\n        // of a bug with Terser that caused optimized JIT builds to throw a `ReferenceError`.\n        // This bug was investigated in https://github.com/angular/angular-cli/issues/17264.\n        // We should not rename it back until https://github.com/terser/terser/issues/615 is fixed.\n\n\n        var options = getJitOptions();\n        var preserveWhitespaces = metadata.preserveWhitespaces;\n\n        if (preserveWhitespaces === undefined) {\n          if (options !== null && options.preserveWhitespaces !== undefined) {\n            preserveWhitespaces = options.preserveWhitespaces;\n          } else {\n            preserveWhitespaces = false;\n          }\n        }\n\n        var encapsulation = metadata.encapsulation;\n\n        if (encapsulation === undefined) {\n          if (options !== null && options.defaultEncapsulation !== undefined) {\n            encapsulation = options.defaultEncapsulation;\n          } else {\n            encapsulation = ViewEncapsulation$1.Emulated;\n          }\n        }\n\n        var templateUrl = metadata.templateUrl || \"ng:///\".concat(type.name, \"/template.html\");\n        var meta = Object.assign(Object.assign({}, directiveMetadata(type, metadata)), {\n          typeSourceSpan: compiler.createParseSourceSpan('Component', type.name, templateUrl),\n          template: metadata.template || '',\n          preserveWhitespaces: preserveWhitespaces,\n          styles: metadata.styles || EMPTY_ARRAY,\n          animations: metadata.animations,\n          directives: [],\n          changeDetection: metadata.changeDetection,\n          pipes: new Map(),\n          encapsulation: encapsulation,\n          interpolation: metadata.interpolation,\n          viewProviders: metadata.viewProviders || null\n        });\n        compilationDepth++;\n\n        try {\n          if (meta.usesInheritance) {\n            addDirectiveDefToUndecoratedParents(type);\n          }\n\n          ngComponentDef = compiler.compileComponent(angularCoreEnv, templateUrl, meta);\n        } finally {\n          // Ensure that the compilation depth is decremented even when the compilation failed.\n          compilationDepth--;\n        }\n\n        if (compilationDepth === 0) {\n          // When NgModule decorator executed, we enqueued the module definition such that\n          // it would only dequeue and add itself as module scope to all of its declarations,\n          // but only if  if all of its declarations had resolved. This call runs the check\n          // to see if any modules that are in the queue can be dequeued and add scope to\n          // their declarations.\n          flushModuleScopingQueueAsMuchAsPossible();\n        } // If component compilation is async, then the @NgModule annotation which declares the\n        // component may execute and set an ngSelectorScope property on the component type. This\n        // allows the component to patch itself with directiveDefs from the module after it\n        // finishes compiling.\n\n\n        if (hasSelectorScope(type)) {\n          var scopes = transitiveScopesFor(type.ngSelectorScope);\n          patchComponentDefWithScope(ngComponentDef, scopes);\n        }\n      }\n\n      return ngComponentDef;\n    },\n    // Make the property configurable in dev mode to allow overriding in tests\n    configurable: !!ngDevMode\n  });\n}\n\nfunction hasSelectorScope(component) {\n  return component.ngSelectorScope !== undefined;\n}\n/**\n * Compile an Angular directive according to its decorator metadata, and patch the resulting\n * directive def onto the component type.\n *\n * In the event that compilation is not immediate, `compileDirective` will return a `Promise` which\n * will resolve when compilation completes and the directive becomes usable.\n */\n\n\nfunction compileDirective(type, directive) {\n  var ngDirectiveDef = null;\n  addDirectiveFactoryDef(type, directive || {});\n  Object.defineProperty(type, NG_DIR_DEF, {\n    get: function get() {\n      if (ngDirectiveDef === null) {\n        // `directive` can be null in the case of abstract directives as a base class\n        // that use `@Directive()` with no selector. In that case, pass empty object to the\n        // `directiveMetadata` function instead of null.\n        var meta = getDirectiveMetadata(type, directive || {});\n        ngDirectiveDef = getCompilerFacade().compileDirective(angularCoreEnv, meta.sourceMapUrl, meta.metadata);\n      }\n\n      return ngDirectiveDef;\n    },\n    // Make the property configurable in dev mode to allow overriding in tests\n    configurable: !!ngDevMode\n  });\n}\n\nfunction getDirectiveMetadata(type, metadata) {\n  var name = type && type.name;\n  var sourceMapUrl = \"ng:///\".concat(name, \"/\\u0275dir.js\");\n  var compiler = getCompilerFacade();\n  var facade = directiveMetadata(type, metadata);\n  facade.typeSourceSpan = compiler.createParseSourceSpan('Directive', name, sourceMapUrl);\n\n  if (facade.usesInheritance) {\n    addDirectiveDefToUndecoratedParents(type);\n  }\n\n  return {\n    metadata: facade,\n    sourceMapUrl: sourceMapUrl\n  };\n}\n\nfunction addDirectiveFactoryDef(type, metadata) {\n  var ngFactoryDef = null;\n  Object.defineProperty(type, NG_FACTORY_DEF, {\n    get: function get() {\n      if (ngFactoryDef === null) {\n        var meta = getDirectiveMetadata(type, metadata);\n        var compiler = getCompilerFacade();\n        ngFactoryDef = compiler.compileFactory(angularCoreEnv, \"ng:///\".concat(type.name, \"/\\u0275fac.js\"), Object.assign(Object.assign({}, meta.metadata), {\n          injectFn: 'directiveInject',\n          target: compiler.R3FactoryTarget.Directive\n        }));\n      }\n\n      return ngFactoryDef;\n    },\n    // Make the property configurable in dev mode to allow overriding in tests\n    configurable: !!ngDevMode\n  });\n}\n\nfunction extendsDirectlyFromObject(type) {\n  return Object.getPrototypeOf(type.prototype) === Object.prototype;\n}\n/**\n * Extract the `R3DirectiveMetadata` for a particular directive (either a `Directive` or a\n * `Component`).\n */\n\n\nfunction directiveMetadata(type, metadata) {\n  // Reflect inputs and outputs.\n  var reflect = getReflect();\n  var propMetadata = reflect.ownPropMetadata(type);\n  return {\n    name: type.name,\n    type: type,\n    typeArgumentCount: 0,\n    selector: metadata.selector !== undefined ? metadata.selector : null,\n    deps: reflectDependencies(type),\n    host: metadata.host || EMPTY_OBJ,\n    propMetadata: propMetadata,\n    inputs: metadata.inputs || EMPTY_ARRAY,\n    outputs: metadata.outputs || EMPTY_ARRAY,\n    queries: extractQueriesMetadata(type, propMetadata, isContentQuery),\n    lifecycle: {\n      usesOnChanges: reflect.hasLifecycleHook(type, 'ngOnChanges')\n    },\n    typeSourceSpan: null,\n    usesInheritance: !extendsDirectlyFromObject(type),\n    exportAs: extractExportAs(metadata.exportAs),\n    providers: metadata.providers || null,\n    viewQueries: extractQueriesMetadata(type, propMetadata, isViewQuery)\n  };\n}\n/**\n * Adds a directive definition to all parent classes of a type that don't have an Angular decorator.\n */\n\n\nfunction addDirectiveDefToUndecoratedParents(type) {\n  var objPrototype = Object.prototype;\n  var parent = Object.getPrototypeOf(type.prototype).constructor; // Go up the prototype until we hit `Object`.\n\n  while (parent && parent !== objPrototype) {\n    // Since inheritance works if the class was annotated already, we only need to add\n    // the def if there are no annotations and the def hasn't been created already.\n    if (!getDirectiveDef(parent) && !getComponentDef(parent) && shouldAddAbstractDirective(parent)) {\n      compileDirective(parent, null);\n    }\n\n    parent = Object.getPrototypeOf(parent);\n  }\n}\n\nfunction convertToR3QueryPredicate(selector) {\n  return typeof selector === 'string' ? splitByComma(selector) : resolveForwardRef(selector);\n}\n\nfunction convertToR3QueryMetadata(propertyName, ann) {\n  return {\n    propertyName: propertyName,\n    predicate: convertToR3QueryPredicate(ann.selector),\n    descendants: ann.descendants,\n    first: ann.first,\n    read: ann.read ? ann.read : null,\n    static: !!ann.static\n  };\n}\n\nfunction extractQueriesMetadata(type, propMetadata, isQueryAnn) {\n  var queriesMeta = [];\n\n  var _loop2 = function _loop2(field) {\n    if (propMetadata.hasOwnProperty(field)) {\n      var annotations = propMetadata[field];\n      annotations.forEach(function (ann) {\n        if (isQueryAnn(ann)) {\n          if (!ann.selector) {\n            throw new Error(\"Can't construct a query for the property \\\"\".concat(field, \"\\\" of \") + \"\\\"\".concat(stringifyForError(type), \"\\\" since the query selector wasn't defined.\"));\n          }\n\n          if (annotations.some(isInputAnnotation)) {\n            throw new Error(\"Cannot combine @Input decorators with query decorators\");\n          }\n\n          queriesMeta.push(convertToR3QueryMetadata(field, ann));\n        }\n      });\n    }\n  };\n\n  for (var field in propMetadata) {\n    _loop2(field);\n  }\n\n  return queriesMeta;\n}\n\nfunction extractExportAs(exportAs) {\n  return exportAs === undefined ? null : splitByComma(exportAs);\n}\n\nfunction isContentQuery(value) {\n  var name = value.ngMetadataName;\n  return name === 'ContentChild' || name === 'ContentChildren';\n}\n\nfunction isViewQuery(value) {\n  var name = value.ngMetadataName;\n  return name === 'ViewChild' || name === 'ViewChildren';\n}\n\nfunction isInputAnnotation(value) {\n  return value.ngMetadataName === 'Input';\n}\n\nfunction splitByComma(value) {\n  return value.split(',').map(function (piece) {\n    return piece.trim();\n  });\n}\n\nvar LIFECYCLE_HOOKS = ['ngOnChanges', 'ngOnInit', 'ngOnDestroy', 'ngDoCheck', 'ngAfterViewInit', 'ngAfterViewChecked', 'ngAfterContentInit', 'ngAfterContentChecked'];\n\nfunction shouldAddAbstractDirective(type) {\n  var reflect = getReflect();\n\n  if (LIFECYCLE_HOOKS.some(function (hookName) {\n    return reflect.hasLifecycleHook(type, hookName);\n  })) {\n    return true;\n  }\n\n  var propMetadata = reflect.propMetadata(type);\n\n  for (var field in propMetadata) {\n    var annotations = propMetadata[field];\n\n    for (var i = 0; i < annotations.length; i++) {\n      var current = annotations[i];\n      var metadataName = current.ngMetadataName;\n\n      if (isInputAnnotation(current) || isContentQuery(current) || isViewQuery(current) || metadataName === 'Output' || metadataName === 'HostBinding' || metadataName === 'HostListener') {\n        return true;\n      }\n    }\n  }\n\n  return false;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction compilePipe(type, meta) {\n  var ngPipeDef = null;\n  var ngFactoryDef = null;\n  Object.defineProperty(type, NG_FACTORY_DEF, {\n    get: function get() {\n      if (ngFactoryDef === null) {\n        var metadata = getPipeMetadata(type, meta);\n        var compiler = getCompilerFacade();\n        ngFactoryDef = compiler.compileFactory(angularCoreEnv, \"ng:///\".concat(metadata.name, \"/\\u0275fac.js\"), Object.assign(Object.assign({}, metadata), {\n          injectFn: 'directiveInject',\n          target: compiler.R3FactoryTarget.Pipe\n        }));\n      }\n\n      return ngFactoryDef;\n    },\n    // Make the property configurable in dev mode to allow overriding in tests\n    configurable: !!ngDevMode\n  });\n  Object.defineProperty(type, NG_PIPE_DEF, {\n    get: function get() {\n      if (ngPipeDef === null) {\n        var metadata = getPipeMetadata(type, meta);\n        ngPipeDef = getCompilerFacade().compilePipe(angularCoreEnv, \"ng:///\".concat(metadata.name, \"/\\u0275pipe.js\"), metadata);\n      }\n\n      return ngPipeDef;\n    },\n    // Make the property configurable in dev mode to allow overriding in tests\n    configurable: !!ngDevMode\n  });\n}\n\nfunction getPipeMetadata(type, meta) {\n  return {\n    type: type,\n    typeArgumentCount: 0,\n    name: type.name,\n    deps: reflectDependencies(type),\n    pipeName: meta.name,\n    pure: meta.pure !== undefined ? meta.pure : true\n  };\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ɵ0$d = function ɵ0$d() {\n  var dir = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n  return dir;\n},\n    ɵ1$3 = function ɵ1$3(type, meta) {\n  return SWITCH_COMPILE_DIRECTIVE(type, meta);\n};\n/**\n * Type of the Directive metadata.\n *\n * @publicApi\n */\n\n\nvar Directive = makeDecorator('Directive', ɵ0$d, undefined, undefined, ɵ1$3);\n\nvar ɵ2$1 = function ɵ2$1() {\n  var c = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n  return Object.assign({\n    changeDetection: ChangeDetectionStrategy.Default\n  }, c);\n},\n    ɵ3$1 = function ɵ3$1(type, meta) {\n  return SWITCH_COMPILE_COMPONENT(type, meta);\n};\n/**\n * Component decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\n\n\nvar Component = makeDecorator('Component', ɵ2$1, Directive, undefined, ɵ3$1);\n\nvar ɵ4 = function ɵ4(p) {\n  return Object.assign({\n    pure: true\n  }, p);\n},\n    ɵ5 = function ɵ5(type, meta) {\n  return SWITCH_COMPILE_PIPE(type, meta);\n};\n/**\n * @Annotation\n * @publicApi\n */\n\n\nvar Pipe = makeDecorator('Pipe', ɵ4, undefined, undefined, ɵ5);\n\nvar ɵ6 = function ɵ6(bindingPropertyName) {\n  return {\n    bindingPropertyName: bindingPropertyName\n  };\n};\n/**\n * @Annotation\n * @publicApi\n */\n\n\nvar Input = makePropDecorator('Input', ɵ6);\n\nvar ɵ7 = function ɵ7(bindingPropertyName) {\n  return {\n    bindingPropertyName: bindingPropertyName\n  };\n};\n/**\n * @Annotation\n * @publicApi\n */\n\n\nvar Output = makePropDecorator('Output', ɵ7);\n\nvar ɵ8 = function ɵ8(hostPropertyName) {\n  return {\n    hostPropertyName: hostPropertyName\n  };\n};\n/**\n * @Annotation\n * @publicApi\n */\n\n\nvar HostBinding = makePropDecorator('HostBinding', ɵ8);\n\nvar ɵ9 = function ɵ9(eventName, args) {\n  return {\n    eventName: eventName,\n    args: args\n  };\n};\n/**\n * Decorator that binds a DOM event to a host listener and supplies configuration metadata.\n * Angular invokes the supplied handler method when the host element emits the specified event,\n * and updates the bound element with the result.\n *\n * If the handler method returns false, applies `preventDefault` on the bound element.\n *\n * @usageNotes\n *\n * The following example declares a directive\n * that attaches a click listener to a button and counts clicks.\n *\n * ```ts\n * @Directive({selector: 'button[counting]'})\n * class CountClicks {\n *   numberOfClicks = 0;\n *\n *   @HostListener('click', ['$event.target'])\n *   onClick(btn) {\n *     console.log('button', btn, 'number of clicks:', this.numberOfClicks++);\n *  }\n * }\n *\n * @Component({\n *   selector: 'app',\n *   template: '<button counting>Increment</button>',\n * })\n * class App {}\n *\n * ```\n *\n * The following example registers another DOM event handler that listens for key-press events.\n * ``` ts\n * import { HostListener, Component } from \"@angular/core\";\n *\n * @Component({\n *   selector: 'app',\n *   template: `<h1>Hello, you have pressed keys {{counter}} number of times!</h1> Press any key to\n * increment the counter.\n *   <button (click)=\"resetCounter()\">Reset Counter</button>`\n * })\n * class AppComponent {\n *   counter = 0;\n *   @HostListener('window:keydown', ['$event'])\n *   handleKeyDown(event: KeyboardEvent) {\n *     this.counter++;\n *   }\n *   resetCounter() {\n *     this.counter = 0;\n *   }\n * }\n * ```\n *\n * @Annotation\n * @publicApi\n */\n\n\nvar HostListener = makePropDecorator('HostListener', ɵ9);\nvar SWITCH_COMPILE_COMPONENT__POST_R3__ = compileComponent;\nvar SWITCH_COMPILE_DIRECTIVE__POST_R3__ = compileDirective;\nvar SWITCH_COMPILE_PIPE__POST_R3__ = compilePipe;\nvar SWITCH_COMPILE_COMPONENT__PRE_R3__ = noop;\nvar SWITCH_COMPILE_DIRECTIVE__PRE_R3__ = noop;\nvar SWITCH_COMPILE_PIPE__PRE_R3__ = noop;\nvar SWITCH_COMPILE_COMPONENT = SWITCH_COMPILE_COMPONENT__PRE_R3__;\nvar SWITCH_COMPILE_DIRECTIVE = SWITCH_COMPILE_DIRECTIVE__PRE_R3__;\nvar SWITCH_COMPILE_PIPE = SWITCH_COMPILE_PIPE__PRE_R3__;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar ɵ0$e = function ɵ0$e(ngModule) {\n  return ngModule;\n},\n    ɵ1$4 =\n/**\n * Decorator that marks the following class as an NgModule, and supplies\n * configuration metadata for it.\n *\n * * The `declarations` and `entryComponents` options configure the compiler\n * with information about what belongs to the NgModule.\n * * The `providers` options configures the NgModule's injector to provide\n * dependencies the NgModule members.\n * * The `imports` and `exports` options bring in members from other modules, and make\n * this module's members available to others.\n */\nfunction ɵ1$4(type, meta) {\n  return SWITCH_COMPILE_NGMODULE(type, meta);\n};\n/**\n * @Annotation\n * @publicApi\n */\n\n\nvar NgModule = makeDecorator('NgModule', ɵ0$e, undefined, undefined, ɵ1$4);\n\nfunction preR3NgModuleCompile(moduleType, metadata) {\n  var imports = metadata && metadata.imports || [];\n\n  if (metadata && metadata.exports) {\n    imports = [].concat(_toConsumableArray(imports), [metadata.exports]);\n  }\n\n  moduleType.ɵinj = ɵɵdefineInjector({\n    factory: convertInjectableProviderToFactory(moduleType, {\n      useClass: moduleType\n    }),\n    providers: metadata && metadata.providers,\n    imports: imports\n  });\n}\n\nvar SWITCH_COMPILE_NGMODULE__POST_R3__ = compileNgModule;\nvar SWITCH_COMPILE_NGMODULE__PRE_R3__ = preR3NgModuleCompile;\nvar SWITCH_COMPILE_NGMODULE = SWITCH_COMPILE_NGMODULE__PRE_R3__;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A [DI token](guide/glossary#di-token \"DI token definition\") that you can use to provide\n * one or more initialization functions.\n *\n * The provided functions are injected at application startup and executed during\n * app initialization. If any of these functions returns a Promise, initialization\n * does not complete until the Promise is resolved.\n *\n * You can, for example, create a factory function that loads language data\n * or an external configuration, and provide that function to the `APP_INITIALIZER` token.\n * The function is executed during the application bootstrap process,\n * and the needed data is available on startup.\n *\n * @see `ApplicationInitStatus`\n *\n * @publicApi\n */\n\nvar APP_INITIALIZER = new InjectionToken('Application Initializer');\n/**\n * A class that reflects the state of running {@link APP_INITIALIZER} functions.\n *\n * @publicApi\n */\n\nvar ApplicationInitStatus = /*#__PURE__*/function () {\n  function ApplicationInitStatus(appInits) {\n    var _this21 = this;\n\n    _classCallCheck(this, ApplicationInitStatus);\n\n    this.appInits = appInits;\n    this.resolve = noop;\n    this.reject = noop;\n    this.initialized = false;\n    this.done = false;\n    this.donePromise = new Promise(function (res, rej) {\n      _this21.resolve = res;\n      _this21.reject = rej;\n    });\n  }\n  /** @internal */\n\n\n  _createClass2(ApplicationInitStatus, [{\n    key: \"runInitializers\",\n    value: function runInitializers() {\n      var _this22 = this;\n\n      if (this.initialized) {\n        return;\n      }\n\n      var asyncInitPromises = [];\n\n      var complete = function complete() {\n        _this22.done = true;\n\n        _this22.resolve();\n      };\n\n      if (this.appInits) {\n        for (var i = 0; i < this.appInits.length; i++) {\n          var initResult = this.appInits[i]();\n\n          if (isPromise(initResult)) {\n            asyncInitPromises.push(initResult);\n          }\n        }\n      }\n\n      Promise.all(asyncInitPromises).then(function () {\n        complete();\n      }).catch(function (e) {\n        _this22.reject(e);\n      });\n\n      if (asyncInitPromises.length === 0) {\n        complete();\n      }\n\n      this.initialized = true;\n    }\n  }]);\n\n  return ApplicationInitStatus;\n}();\n\nApplicationInitStatus.decorators = [{\n  type: Injectable\n}];\n\nApplicationInitStatus.ctorParameters = function () {\n  return [{\n    type: Array,\n    decorators: [{\n      type: Inject,\n      args: [APP_INITIALIZER]\n    }, {\n      type: Optional\n    }]\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A [DI token](guide/glossary#di-token \"DI token definition\") representing a unique string ID, used\n * primarily for prefixing application attributes and CSS styles when\n * {@link ViewEncapsulation#Emulated ViewEncapsulation.Emulated} is being used.\n *\n * BY default, the value is randomly generated and assigned to the application by Angular.\n * To provide a custom ID value, use a DI provider <!-- TODO: provider --> to configure\n * the root {@link Injector} that uses this token.\n *\n * @publicApi\n */\n\n\nvar APP_ID = new InjectionToken('AppId');\n\nfunction _appIdRandomProviderFactory() {\n  return \"\".concat(_randomChar()).concat(_randomChar()).concat(_randomChar());\n}\n/**\n * Providers that generate a random `APP_ID_TOKEN`.\n * @publicApi\n */\n\n\nvar APP_ID_RANDOM_PROVIDER = {\n  provide: APP_ID,\n  useFactory: _appIdRandomProviderFactory,\n  deps: []\n};\n\nfunction _randomChar() {\n  return String.fromCharCode(97 + Math.floor(Math.random() * 25));\n}\n/**\n * A function that is executed when a platform is initialized.\n * @publicApi\n */\n\n\nvar PLATFORM_INITIALIZER = new InjectionToken('Platform Initializer');\n/**\n * A token that indicates an opaque platform ID.\n * @publicApi\n */\n\nvar PLATFORM_ID = new InjectionToken('Platform ID');\n/**\n * A [DI token](guide/glossary#di-token \"DI token definition\") that provides a set of callbacks to\n * be called for every component that is bootstrapped.\n *\n * Each callback must take a `ComponentRef` instance and return nothing.\n *\n * `(componentRef: ComponentRef) => void`\n *\n * @publicApi\n */\n\nvar APP_BOOTSTRAP_LISTENER = new InjectionToken('appBootstrapListener');\n/**\n * A [DI token](guide/glossary#di-token \"DI token definition\") that indicates the root directory of\n * the application\n * @publicApi\n */\n\nvar PACKAGE_ROOT_URL = new InjectionToken('Application Packages Root URL');\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar Console = /*#__PURE__*/function () {\n  function Console() {\n    _classCallCheck(this, Console);\n  }\n\n  _createClass2(Console, [{\n    key: \"log\",\n    value: function log(message) {\n      // tslint:disable-next-line:no-console\n      console.log(message);\n    } // Note: for reporting errors use `DOM.logError()` as it is platform specific\n\n  }, {\n    key: \"warn\",\n    value: function warn(message) {\n      // tslint:disable-next-line:no-console\n      console.warn(message);\n    }\n  }]);\n\n  return Console;\n}();\n\nConsole.decorators = [{\n  type: Injectable\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Provide this token to set the locale of your application.\n * It is used for i18n extraction, by i18n pipes (DatePipe, I18nPluralPipe, CurrencyPipe,\n * DecimalPipe and PercentPipe) and by ICU expressions.\n *\n * See the [i18n guide](guide/i18n#setting-up-locale) for more information.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * import { LOCALE_ID } from '@angular/core';\n * import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';\n * import { AppModule } from './app/app.module';\n *\n * platformBrowserDynamic().bootstrapModule(AppModule, {\n *   providers: [{provide: LOCALE_ID, useValue: 'en-US' }]\n * });\n * ```\n *\n * @publicApi\n */\n\nvar LOCALE_ID$1 = new InjectionToken('LocaleId');\n/**\n * Provide this token to set the default currency code your application uses for\n * CurrencyPipe when there is no currency code passed into it. This is only used by\n * CurrencyPipe and has no relation to locale currency. Defaults to USD if not configured.\n *\n * See the [i18n guide](guide/i18n#setting-up-locale) for more information.\n *\n * <div class=\"alert is-helpful\">\n *\n * **Deprecation notice:**\n *\n * The default currency code is currently always `USD` but this is deprecated from v9.\n *\n * **In v10 the default currency code will be taken from the current locale.**\n *\n * If you need the previous behavior then set it by creating a `DEFAULT_CURRENCY_CODE` provider in\n * your application `NgModule`:\n *\n * ```ts\n * {provide: DEFAULT_CURRENCY_CODE, useValue: 'USD'}\n * ```\n *\n * </div>\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';\n * import { AppModule } from './app/app.module';\n *\n * platformBrowserDynamic().bootstrapModule(AppModule, {\n *   providers: [{provide: DEFAULT_CURRENCY_CODE, useValue: 'EUR' }]\n * });\n * ```\n *\n * @publicApi\n */\n\nvar DEFAULT_CURRENCY_CODE = new InjectionToken('DefaultCurrencyCode');\n/**\n * Use this token at bootstrap to provide the content of your translation file (`xtb`,\n * `xlf` or `xlf2`) when you want to translate your application in another language.\n *\n * See the [i18n guide](guide/i18n#merge) for more information.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * import { TRANSLATIONS } from '@angular/core';\n * import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';\n * import { AppModule } from './app/app.module';\n *\n * // content of your translation file\n * const translations = '....';\n *\n * platformBrowserDynamic().bootstrapModule(AppModule, {\n *   providers: [{provide: TRANSLATIONS, useValue: translations }]\n * });\n * ```\n *\n * @publicApi\n */\n\nvar TRANSLATIONS = new InjectionToken('Translations');\n/**\n * Provide this token at bootstrap to set the format of your {@link TRANSLATIONS}: `xtb`,\n * `xlf` or `xlf2`.\n *\n * See the [i18n guide](guide/i18n#merge) for more information.\n *\n * @usageNotes\n * ### Example\n *\n * ```typescript\n * import { TRANSLATIONS_FORMAT } from '@angular/core';\n * import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';\n * import { AppModule } from './app/app.module';\n *\n * platformBrowserDynamic().bootstrapModule(AppModule, {\n *   providers: [{provide: TRANSLATIONS_FORMAT, useValue: 'xlf' }]\n * });\n * ```\n *\n * @publicApi\n */\n\nvar TRANSLATIONS_FORMAT = new InjectionToken('TranslationsFormat');\n/**\n * Use this enum at bootstrap as an option of `bootstrapModule` to define the strategy\n * that the compiler should use in case of missing translations:\n * - Error: throw if you have missing translations.\n * - Warning (default): show a warning in the console and/or shell.\n * - Ignore: do nothing.\n *\n * See the [i18n guide](guide/i18n#missing-translation) for more information.\n *\n * @usageNotes\n * ### Example\n * ```typescript\n * import { MissingTranslationStrategy } from '@angular/core';\n * import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';\n * import { AppModule } from './app/app.module';\n *\n * platformBrowserDynamic().bootstrapModule(AppModule, {\n *   missingTranslation: MissingTranslationStrategy.Error\n * });\n * ```\n *\n * @publicApi\n */\n\nvar MissingTranslationStrategy;\n\n(function (MissingTranslationStrategy) {\n  MissingTranslationStrategy[MissingTranslationStrategy[\"Error\"] = 0] = \"Error\";\n  MissingTranslationStrategy[MissingTranslationStrategy[\"Warning\"] = 1] = \"Warning\";\n  MissingTranslationStrategy[MissingTranslationStrategy[\"Ignore\"] = 2] = \"Ignore\";\n})(MissingTranslationStrategy || (MissingTranslationStrategy = {}));\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar SWITCH_IVY_ENABLED__POST_R3__ = true;\nvar SWITCH_IVY_ENABLED__PRE_R3__ = false;\nvar ivyEnabled = SWITCH_IVY_ENABLED__PRE_R3__;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Combination of NgModuleFactory and ComponentFactorys.\n *\n * @publicApi\n */\n\nvar ModuleWithComponentFactories = /*#__PURE__*/_createClass2(function ModuleWithComponentFactories(ngModuleFactory, componentFactories) {\n  _classCallCheck(this, ModuleWithComponentFactories);\n\n  this.ngModuleFactory = ngModuleFactory;\n  this.componentFactories = componentFactories;\n});\n\nfunction _throwError() {\n  throw new Error(\"Runtime compiler is not loaded\");\n}\n\nvar Compiler_compileModuleSync__PRE_R3__ = _throwError;\n\nvar Compiler_compileModuleSync__POST_R3__ = function Compiler_compileModuleSync__POST_R3__(moduleType) {\n  return new NgModuleFactory$1(moduleType);\n};\n\nvar Compiler_compileModuleSync = Compiler_compileModuleSync__PRE_R3__;\nvar Compiler_compileModuleAsync__PRE_R3__ = _throwError;\n\nvar Compiler_compileModuleAsync__POST_R3__ = function Compiler_compileModuleAsync__POST_R3__(moduleType) {\n  return Promise.resolve(Compiler_compileModuleSync__POST_R3__(moduleType));\n};\n\nvar Compiler_compileModuleAsync = Compiler_compileModuleAsync__PRE_R3__;\nvar Compiler_compileModuleAndAllComponentsSync__PRE_R3__ = _throwError;\n\nvar Compiler_compileModuleAndAllComponentsSync__POST_R3__ = function Compiler_compileModuleAndAllComponentsSync__POST_R3__(moduleType) {\n  var ngModuleFactory = Compiler_compileModuleSync__POST_R3__(moduleType);\n  var moduleDef = getNgModuleDef(moduleType);\n  var componentFactories = maybeUnwrapFn(moduleDef.declarations).reduce(function (factories, declaration) {\n    var componentDef = getComponentDef(declaration);\n    componentDef && factories.push(new ComponentFactory$1(componentDef));\n    return factories;\n  }, []);\n  return new ModuleWithComponentFactories(ngModuleFactory, componentFactories);\n};\n\nvar Compiler_compileModuleAndAllComponentsSync = Compiler_compileModuleAndAllComponentsSync__PRE_R3__;\nvar Compiler_compileModuleAndAllComponentsAsync__PRE_R3__ = _throwError;\n\nvar Compiler_compileModuleAndAllComponentsAsync__POST_R3__ = function Compiler_compileModuleAndAllComponentsAsync__POST_R3__(moduleType) {\n  return Promise.resolve(Compiler_compileModuleAndAllComponentsSync__POST_R3__(moduleType));\n};\n\nvar Compiler_compileModuleAndAllComponentsAsync = Compiler_compileModuleAndAllComponentsAsync__PRE_R3__;\n/**\n * Low-level service for running the angular compiler during runtime\n * to create {@link ComponentFactory}s, which\n * can later be used to create and render a Component instance.\n *\n * Each `@NgModule` provides an own `Compiler` to its injector,\n * that will use the directives/pipes of the ng module for compilation\n * of components.\n *\n * @publicApi\n */\n\nvar Compiler = /*#__PURE__*/function () {\n  function Compiler() {\n    _classCallCheck(this, Compiler);\n\n    /**\n     * Compiles the given NgModule and all of its components. All templates of the components listed\n     * in `entryComponents` have to be inlined.\n     */\n    this.compileModuleSync = Compiler_compileModuleSync;\n    /**\n     * Compiles the given NgModule and all of its components\n     */\n\n    this.compileModuleAsync = Compiler_compileModuleAsync;\n    /**\n     * Same as {@link #compileModuleSync} but also creates ComponentFactories for all components.\n     */\n\n    this.compileModuleAndAllComponentsSync = Compiler_compileModuleAndAllComponentsSync;\n    /**\n     * Same as {@link #compileModuleAsync} but also creates ComponentFactories for all components.\n     */\n\n    this.compileModuleAndAllComponentsAsync = Compiler_compileModuleAndAllComponentsAsync;\n  }\n  /**\n   * Clears all caches.\n   */\n\n\n  _createClass2(Compiler, [{\n    key: \"clearCache\",\n    value: function clearCache() {}\n    /**\n     * Clears the cache for the given component/ngModule.\n     */\n\n  }, {\n    key: \"clearCacheFor\",\n    value: function clearCacheFor(type) {}\n    /**\n     * Returns the id for a given NgModule, if one is defined and known to the compiler.\n     */\n\n  }, {\n    key: \"getModuleId\",\n    value: function getModuleId(moduleType) {\n      return undefined;\n    }\n  }]);\n\n  return Compiler;\n}();\n\nCompiler.decorators = [{\n  type: Injectable\n}];\n/**\n * Token to provide CompilerOptions in the platform injector.\n *\n * @publicApi\n */\n\nvar COMPILER_OPTIONS = new InjectionToken('compilerOptions');\n/**\n * A factory for creating a Compiler\n *\n * @publicApi\n */\n\nvar CompilerFactory = /*#__PURE__*/_createClass2(function CompilerFactory() {\n  _classCallCheck(this, CompilerFactory);\n});\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar promise = function () {\n  return Promise.resolve(0);\n}();\n\nfunction scheduleMicroTask(fn) {\n  if (typeof Zone === 'undefined') {\n    // use promise to schedule microTask instead of use Zone\n    promise.then(function () {\n      fn && fn.apply(null, null);\n    });\n  } else {\n    Zone.current.scheduleMicroTask('scheduleMicrotask', fn);\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction getNativeRequestAnimationFrame() {\n  var nativeRequestAnimationFrame = _global['requestAnimationFrame'];\n  var nativeCancelAnimationFrame = _global['cancelAnimationFrame'];\n\n  if (typeof Zone !== 'undefined' && nativeRequestAnimationFrame && nativeCancelAnimationFrame) {\n    // use unpatched version of requestAnimationFrame(native delegate) if possible\n    // to avoid another Change detection\n    var unpatchedRequestAnimationFrame = nativeRequestAnimationFrame[Zone.__symbol__('OriginalDelegate')];\n\n    if (unpatchedRequestAnimationFrame) {\n      nativeRequestAnimationFrame = unpatchedRequestAnimationFrame;\n    }\n\n    var unpatchedCancelAnimationFrame = nativeCancelAnimationFrame[Zone.__symbol__('OriginalDelegate')];\n\n    if (unpatchedCancelAnimationFrame) {\n      nativeCancelAnimationFrame = unpatchedCancelAnimationFrame;\n    }\n  }\n\n  return {\n    nativeRequestAnimationFrame: nativeRequestAnimationFrame,\n    nativeCancelAnimationFrame: nativeCancelAnimationFrame\n  };\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * An injectable service for executing work inside or outside of the Angular zone.\n *\n * The most common use of this service is to optimize performance when starting a work consisting of\n * one or more asynchronous tasks that don't require UI updates or error handling to be handled by\n * Angular. Such tasks can be kicked off via {@link #runOutsideAngular} and if needed, these tasks\n * can reenter the Angular zone via {@link #run}.\n *\n * <!-- TODO: add/fix links to:\n *   - docs explaining zones and the use of zones in Angular and change-detection\n *   - link to runOutsideAngular/run (throughout this file!)\n *   -->\n *\n * @usageNotes\n * ### Example\n *\n * ```\n * import {Component, NgZone} from '@angular/core';\n * import {NgIf} from '@angular/common';\n *\n * @Component({\n *   selector: 'ng-zone-demo',\n *   template: `\n *     <h2>Demo: NgZone</h2>\n *\n *     <p>Progress: {{progress}}%</p>\n *     <p *ngIf=\"progress >= 100\">Done processing {{label}} of Angular zone!</p>\n *\n *     <button (click)=\"processWithinAngularZone()\">Process within Angular zone</button>\n *     <button (click)=\"processOutsideOfAngularZone()\">Process outside of Angular zone</button>\n *   `,\n * })\n * export class NgZoneDemo {\n *   progress: number = 0;\n *   label: string;\n *\n *   constructor(private _ngZone: NgZone) {}\n *\n *   // Loop inside the Angular zone\n *   // so the UI DOES refresh after each setTimeout cycle\n *   processWithinAngularZone() {\n *     this.label = 'inside';\n *     this.progress = 0;\n *     this._increaseProgress(() => console.log('Inside Done!'));\n *   }\n *\n *   // Loop outside of the Angular zone\n *   // so the UI DOES NOT refresh after each setTimeout cycle\n *   processOutsideOfAngularZone() {\n *     this.label = 'outside';\n *     this.progress = 0;\n *     this._ngZone.runOutsideAngular(() => {\n *       this._increaseProgress(() => {\n *         // reenter the Angular zone and display done\n *         this._ngZone.run(() => { console.log('Outside Done!'); });\n *       });\n *     });\n *   }\n *\n *   _increaseProgress(doneCallback: () => void) {\n *     this.progress += 1;\n *     console.log(`Current progress: ${this.progress}%`);\n *\n *     if (this.progress < 100) {\n *       window.setTimeout(() => this._increaseProgress(doneCallback), 10);\n *     } else {\n *       doneCallback();\n *     }\n *   }\n * }\n * ```\n *\n * @publicApi\n */\n\n\nvar NgZone = /*#__PURE__*/function () {\n  function NgZone(_ref3) {\n    var _ref3$enableLongStack = _ref3.enableLongStackTrace,\n        enableLongStackTrace = _ref3$enableLongStack === void 0 ? false : _ref3$enableLongStack,\n        _ref3$shouldCoalesceE = _ref3.shouldCoalesceEventChangeDetection,\n        shouldCoalesceEventChangeDetection = _ref3$shouldCoalesceE === void 0 ? false : _ref3$shouldCoalesceE;\n\n    _classCallCheck(this, NgZone);\n\n    this.hasPendingMacrotasks = false;\n    this.hasPendingMicrotasks = false;\n    /**\n     * Whether there are no outstanding microtasks or macrotasks.\n     */\n\n    this.isStable = true;\n    /**\n     * Notifies when code enters Angular Zone. This gets fired first on VM Turn.\n     */\n\n    this.onUnstable = new EventEmitter(false);\n    /**\n     * Notifies when there is no more microtasks enqueued in the current VM Turn.\n     * This is a hint for Angular to do change detection, which may enqueue more microtasks.\n     * For this reason this event can fire multiple times per VM Turn.\n     */\n\n    this.onMicrotaskEmpty = new EventEmitter(false);\n    /**\n     * Notifies when the last `onMicrotaskEmpty` has run and there are no more microtasks, which\n     * implies we are about to relinquish VM turn.\n     * This event gets called just once.\n     */\n\n    this.onStable = new EventEmitter(false);\n    /**\n     * Notifies that an error has been delivered.\n     */\n\n    this.onError = new EventEmitter(false);\n\n    if (typeof Zone == 'undefined') {\n      throw new Error(\"In this configuration Angular requires Zone.js\");\n    }\n\n    Zone.assertZonePatched();\n    var self = this;\n    self._nesting = 0;\n    self._outer = self._inner = Zone.current;\n\n    if (Zone['TaskTrackingZoneSpec']) {\n      self._inner = self._inner.fork(new Zone['TaskTrackingZoneSpec']());\n    }\n\n    if (enableLongStackTrace && Zone['longStackTraceZoneSpec']) {\n      self._inner = self._inner.fork(Zone['longStackTraceZoneSpec']);\n    }\n\n    self.shouldCoalesceEventChangeDetection = shouldCoalesceEventChangeDetection;\n    self.lastRequestAnimationFrameId = -1;\n    self.nativeRequestAnimationFrame = getNativeRequestAnimationFrame().nativeRequestAnimationFrame;\n    forkInnerZoneWithAngularBehavior(self);\n  }\n\n  _createClass2(NgZone, [{\n    key: \"run\",\n    value:\n    /**\n     * Executes the `fn` function synchronously within the Angular zone and returns value returned by\n     * the function.\n     *\n     * Running functions via `run` allows you to reenter Angular zone from a task that was executed\n     * outside of the Angular zone (typically started via {@link #runOutsideAngular}).\n     *\n     * Any future tasks or microtasks scheduled from within this function will continue executing from\n     * within the Angular zone.\n     *\n     * If a synchronous error happens it will be rethrown and not reported via `onError`.\n     */\n    function run(fn, applyThis, applyArgs) {\n      return this._inner.run(fn, applyThis, applyArgs);\n    }\n    /**\n     * Executes the `fn` function synchronously within the Angular zone as a task and returns value\n     * returned by the function.\n     *\n     * Running functions via `run` allows you to reenter Angular zone from a task that was executed\n     * outside of the Angular zone (typically started via {@link #runOutsideAngular}).\n     *\n     * Any future tasks or microtasks scheduled from within this function will continue executing from\n     * within the Angular zone.\n     *\n     * If a synchronous error happens it will be rethrown and not reported via `onError`.\n     */\n\n  }, {\n    key: \"runTask\",\n    value: function runTask(fn, applyThis, applyArgs, name) {\n      var zone = this._inner;\n      var task = zone.scheduleEventTask('NgZoneEvent: ' + name, fn, EMPTY_PAYLOAD, noop$1, noop$1);\n\n      try {\n        return zone.runTask(task, applyThis, applyArgs);\n      } finally {\n        zone.cancelTask(task);\n      }\n    }\n    /**\n     * Same as `run`, except that synchronous errors are caught and forwarded via `onError` and not\n     * rethrown.\n     */\n\n  }, {\n    key: \"runGuarded\",\n    value: function runGuarded(fn, applyThis, applyArgs) {\n      return this._inner.runGuarded(fn, applyThis, applyArgs);\n    }\n    /**\n     * Executes the `fn` function synchronously in Angular's parent zone and returns value returned by\n     * the function.\n     *\n     * Running functions via {@link #runOutsideAngular} allows you to escape Angular's zone and do\n     * work that\n     * doesn't trigger Angular change-detection or is subject to Angular's error handling.\n     *\n     * Any future tasks or microtasks scheduled from within this function will continue executing from\n     * outside of the Angular zone.\n     *\n     * Use {@link #run} to reenter the Angular zone and do work that updates the application model.\n     */\n\n  }, {\n    key: \"runOutsideAngular\",\n    value: function runOutsideAngular(fn) {\n      return this._outer.run(fn);\n    }\n  }], [{\n    key: \"isInAngularZone\",\n    value: function isInAngularZone() {\n      return Zone.current.get('isAngularZone') === true;\n    }\n  }, {\n    key: \"assertInAngularZone\",\n    value: function assertInAngularZone() {\n      if (!NgZone.isInAngularZone()) {\n        throw new Error('Expected to be in Angular Zone, but it is not!');\n      }\n    }\n  }, {\n    key: \"assertNotInAngularZone\",\n    value: function assertNotInAngularZone() {\n      if (NgZone.isInAngularZone()) {\n        throw new Error('Expected to not be in Angular Zone, but it is!');\n      }\n    }\n  }]);\n\n  return NgZone;\n}();\n\nfunction noop$1() {}\n\nvar EMPTY_PAYLOAD = {};\n\nfunction checkStable(zone) {\n  if (zone._nesting == 0 && !zone.hasPendingMicrotasks && !zone.isStable) {\n    try {\n      zone._nesting++;\n      zone.onMicrotaskEmpty.emit(null);\n    } finally {\n      zone._nesting--;\n\n      if (!zone.hasPendingMicrotasks) {\n        try {\n          zone.runOutsideAngular(function () {\n            return zone.onStable.emit(null);\n          });\n        } finally {\n          zone.isStable = true;\n        }\n      }\n    }\n  }\n}\n\nfunction delayChangeDetectionForEvents(zone) {\n  if (zone.lastRequestAnimationFrameId !== -1) {\n    return;\n  }\n\n  zone.lastRequestAnimationFrameId = zone.nativeRequestAnimationFrame.call(_global, function () {\n    // This is a work around for https://github.com/angular/angular/issues/36839.\n    // The core issue is that when event coalescing is enabled it is possible for microtasks\n    // to get flushed too early (As is the case with `Promise.then`) between the\n    // coalescing eventTasks.\n    //\n    // To workaround this we schedule a \"fake\" eventTask before we process the\n    // coalescing eventTasks. The benefit of this is that the \"fake\" container eventTask\n    //  will prevent the microtasks queue from getting drained in between the coalescing\n    // eventTask execution.\n    if (!zone.fakeTopEventTask) {\n      zone.fakeTopEventTask = Zone.root.scheduleEventTask('fakeTopEventTask', function () {\n        zone.lastRequestAnimationFrameId = -1;\n        updateMicroTaskStatus(zone);\n        checkStable(zone);\n      }, undefined, function () {}, function () {});\n    }\n\n    zone.fakeTopEventTask.invoke();\n  });\n  updateMicroTaskStatus(zone);\n}\n\nfunction forkInnerZoneWithAngularBehavior(zone) {\n  var delayChangeDetectionForEventsDelegate = function delayChangeDetectionForEventsDelegate() {\n    delayChangeDetectionForEvents(zone);\n  };\n\n  var maybeDelayChangeDetection = !!zone.shouldCoalesceEventChangeDetection && zone.nativeRequestAnimationFrame && delayChangeDetectionForEventsDelegate;\n  zone._inner = zone._inner.fork({\n    name: 'angular',\n    properties: {\n      'isAngularZone': true,\n      'maybeDelayChangeDetection': maybeDelayChangeDetection\n    },\n    onInvokeTask: function onInvokeTask(delegate, current, target, task, applyThis, applyArgs) {\n      try {\n        onEnter(zone);\n        return delegate.invokeTask(target, task, applyThis, applyArgs);\n      } finally {\n        if (maybeDelayChangeDetection && task.type === 'eventTask') {\n          maybeDelayChangeDetection();\n        }\n\n        onLeave(zone);\n      }\n    },\n    onInvoke: function onInvoke(delegate, current, target, callback, applyThis, applyArgs, source) {\n      try {\n        onEnter(zone);\n        return delegate.invoke(target, callback, applyThis, applyArgs, source);\n      } finally {\n        onLeave(zone);\n      }\n    },\n    onHasTask: function onHasTask(delegate, current, target, hasTaskState) {\n      delegate.hasTask(target, hasTaskState);\n\n      if (current === target) {\n        // We are only interested in hasTask events which originate from our zone\n        // (A child hasTask event is not interesting to us)\n        if (hasTaskState.change == 'microTask') {\n          zone._hasPendingMicrotasks = hasTaskState.microTask;\n          updateMicroTaskStatus(zone);\n          checkStable(zone);\n        } else if (hasTaskState.change == 'macroTask') {\n          zone.hasPendingMacrotasks = hasTaskState.macroTask;\n        }\n      }\n    },\n    onHandleError: function onHandleError(delegate, current, target, error) {\n      delegate.handleError(target, error);\n      zone.runOutsideAngular(function () {\n        return zone.onError.emit(error);\n      });\n      return false;\n    }\n  });\n}\n\nfunction updateMicroTaskStatus(zone) {\n  if (zone._hasPendingMicrotasks || zone.shouldCoalesceEventChangeDetection && zone.lastRequestAnimationFrameId !== -1) {\n    zone.hasPendingMicrotasks = true;\n  } else {\n    zone.hasPendingMicrotasks = false;\n  }\n}\n\nfunction onEnter(zone) {\n  zone._nesting++;\n\n  if (zone.isStable) {\n    zone.isStable = false;\n    zone.onUnstable.emit(null);\n  }\n}\n\nfunction onLeave(zone) {\n  zone._nesting--;\n  checkStable(zone);\n}\n/**\n * Provides a noop implementation of `NgZone` which does nothing. This zone requires explicit calls\n * to framework to perform rendering.\n */\n\n\nvar NoopNgZone = /*#__PURE__*/function () {\n  function NoopNgZone() {\n    _classCallCheck(this, NoopNgZone);\n\n    this.hasPendingMicrotasks = false;\n    this.hasPendingMacrotasks = false;\n    this.isStable = true;\n    this.onUnstable = new EventEmitter();\n    this.onMicrotaskEmpty = new EventEmitter();\n    this.onStable = new EventEmitter();\n    this.onError = new EventEmitter();\n  }\n\n  _createClass2(NoopNgZone, [{\n    key: \"run\",\n    value: function run(fn, applyThis, applyArgs) {\n      return fn.apply(applyThis, applyArgs);\n    }\n  }, {\n    key: \"runGuarded\",\n    value: function runGuarded(fn, applyThis, applyArgs) {\n      return fn.apply(applyThis, applyArgs);\n    }\n  }, {\n    key: \"runOutsideAngular\",\n    value: function runOutsideAngular(fn) {\n      return fn();\n    }\n  }, {\n    key: \"runTask\",\n    value: function runTask(fn, applyThis, applyArgs, name) {\n      return fn.apply(applyThis, applyArgs);\n    }\n  }]);\n\n  return NoopNgZone;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * The Testability service provides testing hooks that can be accessed from\n * the browser and by services such as Protractor. Each bootstrapped Angular\n * application on the page will have an instance of Testability.\n * @publicApi\n */\n\n\nvar Testability = /*#__PURE__*/function () {\n  function Testability(_ngZone) {\n    var _this23 = this;\n\n    _classCallCheck(this, Testability);\n\n    this._ngZone = _ngZone;\n    this._pendingCount = 0;\n    this._isZoneStable = true;\n    /**\n     * Whether any work was done since the last 'whenStable' callback. This is\n     * useful to detect if this could have potentially destabilized another\n     * component while it is stabilizing.\n     * @internal\n     */\n\n    this._didWork = false;\n    this._callbacks = [];\n    this.taskTrackingZone = null;\n\n    this._watchAngularEvents();\n\n    _ngZone.run(function () {\n      _this23.taskTrackingZone = typeof Zone == 'undefined' ? null : Zone.current.get('TaskTrackingZone');\n    });\n  }\n\n  _createClass2(Testability, [{\n    key: \"_watchAngularEvents\",\n    value: function _watchAngularEvents() {\n      var _this24 = this;\n\n      this._ngZone.onUnstable.subscribe({\n        next: function next() {\n          _this24._didWork = true;\n          _this24._isZoneStable = false;\n        }\n      });\n\n      this._ngZone.runOutsideAngular(function () {\n        _this24._ngZone.onStable.subscribe({\n          next: function next() {\n            NgZone.assertNotInAngularZone();\n            scheduleMicroTask(function () {\n              _this24._isZoneStable = true;\n\n              _this24._runCallbacksIfReady();\n            });\n          }\n        });\n      });\n    }\n    /**\n     * Increases the number of pending request\n     * @deprecated pending requests are now tracked with zones.\n     */\n\n  }, {\n    key: \"increasePendingRequestCount\",\n    value: function increasePendingRequestCount() {\n      this._pendingCount += 1;\n      this._didWork = true;\n      return this._pendingCount;\n    }\n    /**\n     * Decreases the number of pending request\n     * @deprecated pending requests are now tracked with zones\n     */\n\n  }, {\n    key: \"decreasePendingRequestCount\",\n    value: function decreasePendingRequestCount() {\n      this._pendingCount -= 1;\n\n      if (this._pendingCount < 0) {\n        throw new Error('pending async requests below zero');\n      }\n\n      this._runCallbacksIfReady();\n\n      return this._pendingCount;\n    }\n    /**\n     * Whether an associated application is stable\n     */\n\n  }, {\n    key: \"isStable\",\n    value: function isStable() {\n      return this._isZoneStable && this._pendingCount === 0 && !this._ngZone.hasPendingMacrotasks;\n    }\n  }, {\n    key: \"_runCallbacksIfReady\",\n    value: function _runCallbacksIfReady() {\n      var _this25 = this;\n\n      if (this.isStable()) {\n        // Schedules the call backs in a new frame so that it is always async.\n        scheduleMicroTask(function () {\n          while (_this25._callbacks.length !== 0) {\n            var cb = _this25._callbacks.pop();\n\n            clearTimeout(cb.timeoutId);\n            cb.doneCb(_this25._didWork);\n          }\n\n          _this25._didWork = false;\n        });\n      } else {\n        // Still not stable, send updates.\n        var pending = this.getPendingTasks();\n        this._callbacks = this._callbacks.filter(function (cb) {\n          if (cb.updateCb && cb.updateCb(pending)) {\n            clearTimeout(cb.timeoutId);\n            return false;\n          }\n\n          return true;\n        });\n        this._didWork = true;\n      }\n    }\n  }, {\n    key: \"getPendingTasks\",\n    value: function getPendingTasks() {\n      if (!this.taskTrackingZone) {\n        return [];\n      } // Copy the tasks data so that we don't leak tasks.\n\n\n      return this.taskTrackingZone.macroTasks.map(function (t) {\n        return {\n          source: t.source,\n          // From TaskTrackingZone:\n          // https://github.com/angular/zone.js/blob/master/lib/zone-spec/task-tracking.ts#L40\n          creationLocation: t.creationLocation,\n          data: t.data\n        };\n      });\n    }\n  }, {\n    key: \"addCallback\",\n    value: function addCallback(cb, timeout, updateCb) {\n      var _this26 = this;\n\n      var timeoutId = -1;\n\n      if (timeout && timeout > 0) {\n        timeoutId = setTimeout(function () {\n          _this26._callbacks = _this26._callbacks.filter(function (cb) {\n            return cb.timeoutId !== timeoutId;\n          });\n          cb(_this26._didWork, _this26.getPendingTasks());\n        }, timeout);\n      }\n\n      this._callbacks.push({\n        doneCb: cb,\n        timeoutId: timeoutId,\n        updateCb: updateCb\n      });\n    }\n    /**\n     * Wait for the application to be stable with a timeout. If the timeout is reached before that\n     * happens, the callback receives a list of the macro tasks that were pending, otherwise null.\n     *\n     * @param doneCb The callback to invoke when Angular is stable or the timeout expires\n     *    whichever comes first.\n     * @param timeout Optional. The maximum time to wait for Angular to become stable. If not\n     *    specified, whenStable() will wait forever.\n     * @param updateCb Optional. If specified, this callback will be invoked whenever the set of\n     *    pending macrotasks changes. If this callback returns true doneCb will not be invoked\n     *    and no further updates will be issued.\n     */\n\n  }, {\n    key: \"whenStable\",\n    value: function whenStable(doneCb, timeout, updateCb) {\n      if (updateCb && !this.taskTrackingZone) {\n        throw new Error('Task tracking zone is required when passing an update callback to ' + 'whenStable(). Is \"zone.js/dist/task-tracking.js\" loaded?');\n      } // These arguments are 'Function' above to keep the public API simple.\n\n\n      this.addCallback(doneCb, timeout, updateCb);\n\n      this._runCallbacksIfReady();\n    }\n    /**\n     * Get the number of pending requests\n     * @deprecated pending requests are now tracked with zones\n     */\n\n  }, {\n    key: \"getPendingRequestCount\",\n    value: function getPendingRequestCount() {\n      return this._pendingCount;\n    }\n    /**\n     * Find providers by name\n     * @param using The root element to search from\n     * @param provider The name of binding variable\n     * @param exactMatch Whether using exactMatch\n     */\n\n  }, {\n    key: \"findProviders\",\n    value: function findProviders(using, provider, exactMatch) {\n      // TODO(juliemr): implement.\n      return [];\n    }\n  }]);\n\n  return Testability;\n}();\n\nTestability.decorators = [{\n  type: Injectable\n}];\n\nTestability.ctorParameters = function () {\n  return [{\n    type: NgZone\n  }];\n};\n/**\n * A global registry of {@link Testability} instances for specific elements.\n * @publicApi\n */\n\n\nvar TestabilityRegistry = /*#__PURE__*/function () {\n  function TestabilityRegistry() {\n    _classCallCheck(this, TestabilityRegistry);\n\n    /** @internal */\n    this._applications = new Map();\n\n    _testabilityGetter.addToWindow(this);\n  }\n  /**\n   * Registers an application with a testability hook so that it can be tracked\n   * @param token token of application, root element\n   * @param testability Testability hook\n   */\n\n\n  _createClass2(TestabilityRegistry, [{\n    key: \"registerApplication\",\n    value: function registerApplication(token, testability) {\n      this._applications.set(token, testability);\n    }\n    /**\n     * Unregisters an application.\n     * @param token token of application, root element\n     */\n\n  }, {\n    key: \"unregisterApplication\",\n    value: function unregisterApplication(token) {\n      this._applications.delete(token);\n    }\n    /**\n     * Unregisters all applications\n     */\n\n  }, {\n    key: \"unregisterAllApplications\",\n    value: function unregisterAllApplications() {\n      this._applications.clear();\n    }\n    /**\n     * Get a testability hook associated with the application\n     * @param elem root element\n     */\n\n  }, {\n    key: \"getTestability\",\n    value: function getTestability(elem) {\n      return this._applications.get(elem) || null;\n    }\n    /**\n     * Get all registered testabilities\n     */\n\n  }, {\n    key: \"getAllTestabilities\",\n    value: function getAllTestabilities() {\n      return Array.from(this._applications.values());\n    }\n    /**\n     * Get all registered applications(root elements)\n     */\n\n  }, {\n    key: \"getAllRootElements\",\n    value: function getAllRootElements() {\n      return Array.from(this._applications.keys());\n    }\n    /**\n     * Find testability of a node in the Tree\n     * @param elem node\n     * @param findInAncestors whether finding testability in ancestors if testability was not found in\n     * current node\n     */\n\n  }, {\n    key: \"findTestabilityInTree\",\n    value: function findTestabilityInTree(elem) {\n      var findInAncestors = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;\n      return _testabilityGetter.findTestabilityInTree(this, elem, findInAncestors);\n    }\n  }]);\n\n  return TestabilityRegistry;\n}();\n\nTestabilityRegistry.decorators = [{\n  type: Injectable\n}];\n\nTestabilityRegistry.ctorParameters = function () {\n  return [];\n};\n\nvar _NoopGetTestability = /*#__PURE__*/function () {\n  function _NoopGetTestability() {\n    _classCallCheck(this, _NoopGetTestability);\n  }\n\n  _createClass2(_NoopGetTestability, [{\n    key: \"addToWindow\",\n    value: function addToWindow(registry) {}\n  }, {\n    key: \"findTestabilityInTree\",\n    value: function findTestabilityInTree(registry, elem, findInAncestors) {\n      return null;\n    }\n  }]);\n\n  return _NoopGetTestability;\n}();\n/**\n * Set the {@link GetTestability} implementation used by the Angular testing framework.\n * @publicApi\n */\n\n\nfunction setTestabilityGetter(getter) {\n  _testabilityGetter = getter;\n}\n\nvar _testabilityGetter = new _NoopGetTestability();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar _platform;\n\nvar compileNgModuleFactory = compileNgModuleFactory__PRE_R3__;\n\nfunction compileNgModuleFactory__PRE_R3__(injector, options, moduleType) {\n  var compilerFactory = injector.get(CompilerFactory);\n  var compiler = compilerFactory.createCompiler([options]);\n  return compiler.compileModuleAsync(moduleType);\n}\n\nfunction compileNgModuleFactory__POST_R3__(injector, options, moduleType) {\n  ngDevMode && assertNgModuleType(moduleType);\n  var moduleFactory = new NgModuleFactory$1(moduleType); // All of the logic below is irrelevant for AOT-compiled code.\n\n  if (typeof ngJitMode !== 'undefined' && !ngJitMode) {\n    return Promise.resolve(moduleFactory);\n  }\n\n  var compilerOptions = injector.get(COMPILER_OPTIONS, []).concat(options); // Configure the compiler to use the provided options. This call may fail when multiple modules\n  // are bootstrapped with incompatible options, as a component can only be compiled according to\n  // a single set of options.\n\n  setJitOptions({\n    defaultEncapsulation: _lastDefined(compilerOptions.map(function (opts) {\n      return opts.defaultEncapsulation;\n    })),\n    preserveWhitespaces: _lastDefined(compilerOptions.map(function (opts) {\n      return opts.preserveWhitespaces;\n    }))\n  });\n\n  if (isComponentResourceResolutionQueueEmpty()) {\n    return Promise.resolve(moduleFactory);\n  }\n\n  var compilerProviders = _mergeArrays(compilerOptions.map(function (o) {\n    return o.providers;\n  })); // In case there are no compiler providers, we just return the module factory as\n  // there won't be any resource loader. This can happen with Ivy, because AOT compiled\n  // modules can be still passed through \"bootstrapModule\". In that case we shouldn't\n  // unnecessarily require the JIT compiler.\n\n\n  if (compilerProviders.length === 0) {\n    return Promise.resolve(moduleFactory);\n  }\n\n  var compiler = getCompilerFacade();\n  var compilerInjector = Injector.create({\n    providers: compilerProviders\n  });\n  var resourceLoader = compilerInjector.get(compiler.ResourceLoader); // The resource loader can also return a string while the \"resolveComponentResources\"\n  // always expects a promise. Therefore we need to wrap the returned value in a promise.\n\n  return resolveComponentResources(function (url) {\n    return Promise.resolve(resourceLoader.get(url));\n  }).then(function () {\n    return moduleFactory;\n  });\n} // the `window.ng` global utilities are only available in non-VE versions of\n// Angular. The function switch below will make sure that the code is not\n// included into Angular when PRE mode is active.\n\n\nfunction publishDefaultGlobalUtils__PRE_R3__() {}\n\nfunction publishDefaultGlobalUtils__POST_R3__() {\n  ngDevMode && publishDefaultGlobalUtils();\n}\n\nvar publishDefaultGlobalUtils$1 = publishDefaultGlobalUtils__PRE_R3__;\nvar isBoundToModule = isBoundToModule__PRE_R3__;\n\nfunction isBoundToModule__PRE_R3__(cf) {\n  return cf instanceof ComponentFactoryBoundToModule;\n}\n\nfunction isBoundToModule__POST_R3__(cf) {\n  return cf.isBoundToModule;\n}\n\nvar ALLOW_MULTIPLE_PLATFORMS = new InjectionToken('AllowMultipleToken');\n/**\n * A token for third-party components that can register themselves with NgProbe.\n *\n * @publicApi\n */\n\nvar NgProbeToken = /*#__PURE__*/_createClass2(function NgProbeToken(name, token) {\n  _classCallCheck(this, NgProbeToken);\n\n  this.name = name;\n  this.token = token;\n});\n/**\n * Creates a platform.\n * Platforms must be created on launch using this function.\n *\n * @publicApi\n */\n\n\nfunction createPlatform(injector) {\n  if (_platform && !_platform.destroyed && !_platform.injector.get(ALLOW_MULTIPLE_PLATFORMS, false)) {\n    throw new Error('There can be only one platform. Destroy the previous one to create a new one.');\n  }\n\n  publishDefaultGlobalUtils$1();\n  _platform = injector.get(PlatformRef);\n  var inits = injector.get(PLATFORM_INITIALIZER, null);\n  if (inits) inits.forEach(function (init) {\n    return init();\n  });\n  return _platform;\n}\n/**\n * Creates a factory for a platform. Can be used to provide or override `Providers` specific to\n * your applciation's runtime needs, such as `PLATFORM_INITIALIZER` and `PLATFORM_ID`.\n * @param parentPlatformFactory Another platform factory to modify. Allows you to compose factories\n * to build up configurations that might be required by different libraries or parts of the\n * application.\n * @param name Identifies the new platform factory.\n * @param providers A set of dependency providers for platforms created with the new factory.\n *\n * @publicApi\n */\n\n\nfunction createPlatformFactory(parentPlatformFactory, name) {\n  var providers = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [];\n  var desc = \"Platform: \".concat(name);\n  var marker = new InjectionToken(desc);\n  return function () {\n    var extraProviders = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];\n    var platform = getPlatform();\n\n    if (!platform || platform.injector.get(ALLOW_MULTIPLE_PLATFORMS, false)) {\n      if (parentPlatformFactory) {\n        parentPlatformFactory(providers.concat(extraProviders).concat({\n          provide: marker,\n          useValue: true\n        }));\n      } else {\n        var injectedProviders = providers.concat(extraProviders).concat({\n          provide: marker,\n          useValue: true\n        }, {\n          provide: INJECTOR_SCOPE,\n          useValue: 'platform'\n        });\n        createPlatform(Injector.create({\n          providers: injectedProviders,\n          name: desc\n        }));\n      }\n    }\n\n    return assertPlatform(marker);\n  };\n}\n/**\n * Checks that there is currently a platform that contains the given token as a provider.\n *\n * @publicApi\n */\n\n\nfunction assertPlatform(requiredToken) {\n  var platform = getPlatform();\n\n  if (!platform) {\n    throw new Error('No platform exists!');\n  }\n\n  if (!platform.injector.get(requiredToken, null)) {\n    throw new Error('A platform with a different configuration has been created. Please destroy it first.');\n  }\n\n  return platform;\n}\n/**\n * Destroys the current Angular platform and all Angular applications on the page.\n * Destroys all modules and listeners registered with the platform.\n *\n * @publicApi\n */\n\n\nfunction destroyPlatform() {\n  if (_platform && !_platform.destroyed) {\n    _platform.destroy();\n  }\n}\n/**\n * Returns the current platform.\n *\n * @publicApi\n */\n\n\nfunction getPlatform() {\n  return _platform && !_platform.destroyed ? _platform : null;\n}\n/**\n * The Angular platform is the entry point for Angular on a web page.\n * Each page has exactly one platform. Services (such as reflection) which are common\n * to every Angular application running on the page are bound in its scope.\n * A page's platform is initialized implicitly when a platform is created using a platform\n * factory such as `PlatformBrowser`, or explicitly by calling the `createPlatform()` function.\n *\n * @publicApi\n */\n\n\nvar PlatformRef = /*#__PURE__*/function () {\n  /** @internal */\n  function PlatformRef(_injector) {\n    _classCallCheck(this, PlatformRef);\n\n    this._injector = _injector;\n    this._modules = [];\n    this._destroyListeners = [];\n    this._destroyed = false;\n  }\n  /**\n   * Creates an instance of an `@NgModule` for the given platform for offline compilation.\n   *\n   * @usageNotes\n   *\n   * The following example creates the NgModule for a browser platform.\n   *\n   * ```typescript\n   * my_module.ts:\n   *\n   * @NgModule({\n   *   imports: [BrowserModule]\n   * })\n   * class MyModule {}\n   *\n   * main.ts:\n   * import {MyModuleNgFactory} from './my_module.ngfactory';\n   * import {platformBrowser} from '@angular/platform-browser';\n   *\n   * let moduleRef = platformBrowser().bootstrapModuleFactory(MyModuleNgFactory);\n   * ```\n   */\n\n\n  _createClass2(PlatformRef, [{\n    key: \"bootstrapModuleFactory\",\n    value: function bootstrapModuleFactory(moduleFactory, options) {\n      var _this27 = this;\n\n      // Note: We need to create the NgZone _before_ we instantiate the module,\n      // as instantiating the module creates some providers eagerly.\n      // So we create a mini parent injector that just contains the new NgZone and\n      // pass that as parent to the NgModuleFactory.\n      var ngZoneOption = options ? options.ngZone : undefined;\n      var ngZoneEventCoalescing = options && options.ngZoneEventCoalescing || false;\n      var ngZone = getNgZone(ngZoneOption, ngZoneEventCoalescing);\n      var providers = [{\n        provide: NgZone,\n        useValue: ngZone\n      }]; // Attention: Don't use ApplicationRef.run here,\n      // as we want to be sure that all possible constructor calls are inside `ngZone.run`!\n\n      return ngZone.run(function () {\n        var ngZoneInjector = Injector.create({\n          providers: providers,\n          parent: _this27.injector,\n          name: moduleFactory.moduleType.name\n        });\n        var moduleRef = moduleFactory.create(ngZoneInjector);\n        var exceptionHandler = moduleRef.injector.get(ErrorHandler, null);\n\n        if (!exceptionHandler) {\n          throw new Error('No ErrorHandler. Is platform module (BrowserModule) included?');\n        }\n\n        moduleRef.onDestroy(function () {\n          return remove(_this27._modules, moduleRef);\n        });\n        ngZone.runOutsideAngular(function () {\n          return ngZone.onError.subscribe({\n            next: function next(error) {\n              exceptionHandler.handleError(error);\n            }\n          });\n        });\n        return _callAndReportToErrorHandler(exceptionHandler, ngZone, function () {\n          var initStatus = moduleRef.injector.get(ApplicationInitStatus);\n          initStatus.runInitializers();\n          return initStatus.donePromise.then(function () {\n            if (ivyEnabled) {\n              // If the `LOCALE_ID` provider is defined at bootstrap then we set the value for ivy\n              var localeId = moduleRef.injector.get(LOCALE_ID$1, DEFAULT_LOCALE_ID);\n              setLocaleId(localeId || DEFAULT_LOCALE_ID);\n            }\n\n            _this27._moduleDoBootstrap(moduleRef);\n\n            return moduleRef;\n          });\n        });\n      });\n    }\n    /**\n     * Creates an instance of an `@NgModule` for a given platform using the given runtime compiler.\n     *\n     * @usageNotes\n     * ### Simple Example\n     *\n     * ```typescript\n     * @NgModule({\n     *   imports: [BrowserModule]\n     * })\n     * class MyModule {}\n     *\n     * let moduleRef = platformBrowser().bootstrapModule(MyModule);\n     * ```\n     *\n     */\n\n  }, {\n    key: \"bootstrapModule\",\n    value: function bootstrapModule(moduleType) {\n      var _this28 = this;\n\n      var compilerOptions = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];\n      var options = optionsReducer({}, compilerOptions);\n      return compileNgModuleFactory(this.injector, options, moduleType).then(function (moduleFactory) {\n        return _this28.bootstrapModuleFactory(moduleFactory, options);\n      });\n    }\n  }, {\n    key: \"_moduleDoBootstrap\",\n    value: function _moduleDoBootstrap(moduleRef) {\n      var appRef = moduleRef.injector.get(ApplicationRef);\n\n      if (moduleRef._bootstrapComponents.length > 0) {\n        moduleRef._bootstrapComponents.forEach(function (f) {\n          return appRef.bootstrap(f);\n        });\n      } else if (moduleRef.instance.ngDoBootstrap) {\n        moduleRef.instance.ngDoBootstrap(appRef);\n      } else {\n        throw new Error(\"The module \".concat(stringify(moduleRef.instance.constructor), \" was bootstrapped, but it does not declare \\\"@NgModule.bootstrap\\\" components nor a \\\"ngDoBootstrap\\\" method. \") + \"Please define one of these.\");\n      }\n\n      this._modules.push(moduleRef);\n    }\n    /**\n     * Registers a listener to be called when the platform is destroyed.\n     */\n\n  }, {\n    key: \"onDestroy\",\n    value: function onDestroy(callback) {\n      this._destroyListeners.push(callback);\n    }\n    /**\n     * Retrieves the platform {@link Injector}, which is the parent injector for\n     * every Angular application on the page and provides singleton providers.\n     */\n\n  }, {\n    key: \"injector\",\n    get: function get() {\n      return this._injector;\n    }\n    /**\n     * Destroys the current Angular platform and all Angular applications on the page.\n     * Destroys all modules and listeners registered with the platform.\n     */\n\n  }, {\n    key: \"destroy\",\n    value: function destroy() {\n      if (this._destroyed) {\n        throw new Error('The platform has already been destroyed!');\n      }\n\n      this._modules.slice().forEach(function (module) {\n        return module.destroy();\n      });\n\n      this._destroyListeners.forEach(function (listener) {\n        return listener();\n      });\n\n      this._destroyed = true;\n    }\n  }, {\n    key: \"destroyed\",\n    get: function get() {\n      return this._destroyed;\n    }\n  }]);\n\n  return PlatformRef;\n}();\n\nPlatformRef.decorators = [{\n  type: Injectable\n}];\n\nPlatformRef.ctorParameters = function () {\n  return [{\n    type: Injector\n  }];\n};\n\nfunction getNgZone(ngZoneOption, ngZoneEventCoalescing) {\n  var ngZone;\n\n  if (ngZoneOption === 'noop') {\n    ngZone = new NoopNgZone();\n  } else {\n    ngZone = (ngZoneOption === 'zone.js' ? undefined : ngZoneOption) || new NgZone({\n      enableLongStackTrace: isDevMode(),\n      shouldCoalesceEventChangeDetection: ngZoneEventCoalescing\n    });\n  }\n\n  return ngZone;\n}\n\nfunction _callAndReportToErrorHandler(errorHandler, ngZone, callback) {\n  try {\n    var result = callback();\n\n    if (isPromise(result)) {\n      return result.catch(function (e) {\n        ngZone.runOutsideAngular(function () {\n          return errorHandler.handleError(e);\n        }); // rethrow as the exception handler might not do it\n\n        throw e;\n      });\n    }\n\n    return result;\n  } catch (e) {\n    ngZone.runOutsideAngular(function () {\n      return errorHandler.handleError(e);\n    }); // rethrow as the exception handler might not do it\n\n    throw e;\n  }\n}\n\nfunction optionsReducer(dst, objs) {\n  if (Array.isArray(objs)) {\n    dst = objs.reduce(optionsReducer, dst);\n  } else {\n    dst = Object.assign(Object.assign({}, dst), objs);\n  }\n\n  return dst;\n}\n/**\n * A reference to an Angular application running on a page.\n *\n * @usageNotes\n *\n * {@a is-stable-examples}\n * ### isStable examples and caveats\n *\n * Note two important points about `isStable`, demonstrated in the examples below:\n * - the application will never be stable if you start any kind\n * of recurrent asynchronous task when the application starts\n * (for example for a polling process, started with a `setInterval`, a `setTimeout`\n * or using RxJS operators like `interval`);\n * - the `isStable` Observable runs outside of the Angular zone.\n *\n * Let's imagine that you start a recurrent task\n * (here incrementing a counter, using RxJS `interval`),\n * and at the same time subscribe to `isStable`.\n *\n * ```\n * constructor(appRef: ApplicationRef) {\n *   appRef.isStable.pipe(\n *      filter(stable => stable)\n *   ).subscribe(() => console.log('App is stable now');\n *   interval(1000).subscribe(counter => console.log(counter));\n * }\n * ```\n * In this example, `isStable` will never emit `true`,\n * and the trace \"App is stable now\" will never get logged.\n *\n * If you want to execute something when the app is stable,\n * you have to wait for the application to be stable\n * before starting your polling process.\n *\n * ```\n * constructor(appRef: ApplicationRef) {\n *   appRef.isStable.pipe(\n *     first(stable => stable),\n *     tap(stable => console.log('App is stable now')),\n *     switchMap(() => interval(1000))\n *   ).subscribe(counter => console.log(counter));\n * }\n * ```\n * In this example, the trace \"App is stable now\" will be logged\n * and then the counter starts incrementing every second.\n *\n * Note also that this Observable runs outside of the Angular zone,\n * which means that the code in the subscription\n * to this Observable will not trigger the change detection.\n *\n * Let's imagine that instead of logging the counter value,\n * you update a field of your component\n * and display it in its template.\n *\n * ```\n * constructor(appRef: ApplicationRef) {\n *   appRef.isStable.pipe(\n *     first(stable => stable),\n *     switchMap(() => interval(1000))\n *   ).subscribe(counter => this.value = counter);\n * }\n * ```\n * As the `isStable` Observable runs outside the zone,\n * the `value` field will be updated properly,\n * but the template will not be refreshed!\n *\n * You'll have to manually trigger the change detection to update the template.\n *\n * ```\n * constructor(appRef: ApplicationRef, cd: ChangeDetectorRef) {\n *   appRef.isStable.pipe(\n *     first(stable => stable),\n *     switchMap(() => interval(1000))\n *   ).subscribe(counter => {\n *     this.value = counter;\n *     cd.detectChanges();\n *   });\n * }\n * ```\n *\n * Or make the subscription callback run inside the zone.\n *\n * ```\n * constructor(appRef: ApplicationRef, zone: NgZone) {\n *   appRef.isStable.pipe(\n *     first(stable => stable),\n *     switchMap(() => interval(1000))\n *   ).subscribe(counter => zone.run(() => this.value = counter));\n * }\n * ```\n *\n * @publicApi\n */\n\n\nvar ApplicationRef = /*#__PURE__*/function () {\n  /** @internal */\n  function ApplicationRef(_zone, _console, _injector, _exceptionHandler, _componentFactoryResolver, _initStatus) {\n    var _this29 = this;\n\n    _classCallCheck(this, ApplicationRef);\n\n    this._zone = _zone;\n    this._console = _console;\n    this._injector = _injector;\n    this._exceptionHandler = _exceptionHandler;\n    this._componentFactoryResolver = _componentFactoryResolver;\n    this._initStatus = _initStatus;\n    /** @internal */\n\n    this._bootstrapListeners = [];\n    this._views = [];\n    this._runningTick = false;\n    this._enforceNoNewChanges = false;\n    this._stable = true;\n    /**\n     * Get a list of component types registered to this application.\n     * This list is populated even before the component is created.\n     */\n\n    this.componentTypes = [];\n    /**\n     * Get a list of components registered to this application.\n     */\n\n    this.components = [];\n    this._enforceNoNewChanges = isDevMode();\n\n    this._zone.onMicrotaskEmpty.subscribe({\n      next: function next() {\n        _this29._zone.run(function () {\n          _this29.tick();\n        });\n      }\n    });\n\n    var isCurrentlyStable = new Observable(function (observer) {\n      _this29._stable = _this29._zone.isStable && !_this29._zone.hasPendingMacrotasks && !_this29._zone.hasPendingMicrotasks;\n\n      _this29._zone.runOutsideAngular(function () {\n        observer.next(_this29._stable);\n        observer.complete();\n      });\n    });\n    var isStable = new Observable(function (observer) {\n      // Create the subscription to onStable outside the Angular Zone so that\n      // the callback is run outside the Angular Zone.\n      var stableSub;\n\n      _this29._zone.runOutsideAngular(function () {\n        stableSub = _this29._zone.onStable.subscribe(function () {\n          NgZone.assertNotInAngularZone(); // Check whether there are no pending macro/micro tasks in the next tick\n          // to allow for NgZone to update the state.\n\n          scheduleMicroTask(function () {\n            if (!_this29._stable && !_this29._zone.hasPendingMacrotasks && !_this29._zone.hasPendingMicrotasks) {\n              _this29._stable = true;\n              observer.next(true);\n            }\n          });\n        });\n      });\n\n      var unstableSub = _this29._zone.onUnstable.subscribe(function () {\n        NgZone.assertInAngularZone();\n\n        if (_this29._stable) {\n          _this29._stable = false;\n\n          _this29._zone.runOutsideAngular(function () {\n            observer.next(false);\n          });\n        }\n      });\n\n      return function () {\n        stableSub.unsubscribe();\n        unstableSub.unsubscribe();\n      };\n    });\n    this.isStable = merge$1(isCurrentlyStable, isStable.pipe(share()));\n  }\n  /**\n   * Bootstrap a new component at the root level of the application.\n   *\n   * @usageNotes\n   * ### Bootstrap process\n   *\n   * When bootstrapping a new root component into an application, Angular mounts the\n   * specified application component onto DOM elements identified by the componentType's\n   * selector and kicks off automatic change detection to finish initializing the component.\n   *\n   * Optionally, a component can be mounted onto a DOM element that does not match the\n   * componentType's selector.\n   *\n   * ### Example\n   * {@example core/ts/platform/platform.ts region='longform'}\n   */\n\n\n  _createClass2(ApplicationRef, [{\n    key: \"bootstrap\",\n    value: function bootstrap(componentOrFactory, rootSelectorOrNode) {\n      var _this30 = this;\n\n      if (!this._initStatus.done) {\n        throw new Error('Cannot bootstrap as there are still asynchronous initializers running. Bootstrap components in the `ngDoBootstrap` method of the root module.');\n      }\n\n      var componentFactory;\n\n      if (componentOrFactory instanceof ComponentFactory) {\n        componentFactory = componentOrFactory;\n      } else {\n        componentFactory = this._componentFactoryResolver.resolveComponentFactory(componentOrFactory);\n      }\n\n      this.componentTypes.push(componentFactory.componentType); // Create a factory associated with the current module if it's not bound to some other\n\n      var ngModule = isBoundToModule(componentFactory) ? undefined : this._injector.get(NgModuleRef);\n      var selectorOrNode = rootSelectorOrNode || componentFactory.selector;\n      var compRef = componentFactory.create(Injector.NULL, [], selectorOrNode, ngModule);\n      compRef.onDestroy(function () {\n        _this30._unloadComponent(compRef);\n      });\n      var testability = compRef.injector.get(Testability, null);\n\n      if (testability) {\n        compRef.injector.get(TestabilityRegistry).registerApplication(compRef.location.nativeElement, testability);\n      }\n\n      this._loadComponent(compRef);\n\n      if (isDevMode()) {\n        this._console.log(\"Angular is running in development mode. Call enableProdMode() to enable production mode.\");\n      }\n\n      return compRef;\n    }\n    /**\n     * Invoke this method to explicitly process change detection and its side-effects.\n     *\n     * In development mode, `tick()` also performs a second change detection cycle to ensure that no\n     * further changes are detected. If additional changes are picked up during this second cycle,\n     * bindings in the app have side-effects that cannot be resolved in a single change detection\n     * pass.\n     * In this case, Angular throws an error, since an Angular application can only have one change\n     * detection pass during which all change detection must complete.\n     */\n\n  }, {\n    key: \"tick\",\n    value: function tick() {\n      var _this31 = this;\n\n      if (this._runningTick) {\n        throw new Error('ApplicationRef.tick is called recursively');\n      }\n\n      try {\n        this._runningTick = true;\n\n        var _iterator5 = _createForOfIteratorHelper(this._views),\n            _step5;\n\n        try {\n          for (_iterator5.s(); !(_step5 = _iterator5.n()).done;) {\n            var _view2 = _step5.value;\n\n            _view2.detectChanges();\n          }\n        } catch (err) {\n          _iterator5.e(err);\n        } finally {\n          _iterator5.f();\n        }\n\n        if (this._enforceNoNewChanges) {\n          var _iterator6 = _createForOfIteratorHelper(this._views),\n              _step6;\n\n          try {\n            for (_iterator6.s(); !(_step6 = _iterator6.n()).done;) {\n              var view = _step6.value;\n              view.checkNoChanges();\n            }\n          } catch (err) {\n            _iterator6.e(err);\n          } finally {\n            _iterator6.f();\n          }\n        }\n      } catch (e) {\n        // Attention: Don't rethrow as it could cancel subscriptions to Observables!\n        this._zone.runOutsideAngular(function () {\n          return _this31._exceptionHandler.handleError(e);\n        });\n      } finally {\n        this._runningTick = false;\n      }\n    }\n    /**\n     * Attaches a view so that it will be dirty checked.\n     * The view will be automatically detached when it is destroyed.\n     * This will throw if the view is already attached to a ViewContainer.\n     */\n\n  }, {\n    key: \"attachView\",\n    value: function attachView(viewRef) {\n      var view = viewRef;\n\n      this._views.push(view);\n\n      view.attachToAppRef(this);\n    }\n    /**\n     * Detaches a view from dirty checking again.\n     */\n\n  }, {\n    key: \"detachView\",\n    value: function detachView(viewRef) {\n      var view = viewRef;\n      remove(this._views, view);\n      view.detachFromAppRef();\n    }\n  }, {\n    key: \"_loadComponent\",\n    value: function _loadComponent(componentRef) {\n      this.attachView(componentRef.hostView);\n      this.tick();\n      this.components.push(componentRef); // Get the listeners lazily to prevent DI cycles.\n\n      var listeners = this._injector.get(APP_BOOTSTRAP_LISTENER, []).concat(this._bootstrapListeners);\n\n      listeners.forEach(function (listener) {\n        return listener(componentRef);\n      });\n    }\n  }, {\n    key: \"_unloadComponent\",\n    value: function _unloadComponent(componentRef) {\n      this.detachView(componentRef.hostView);\n      remove(this.components, componentRef);\n    }\n    /** @internal */\n\n  }, {\n    key: \"ngOnDestroy\",\n    value: function ngOnDestroy() {\n      // TODO(alxhub): Dispose of the NgZone.\n      this._views.slice().forEach(function (view) {\n        return view.destroy();\n      });\n    }\n    /**\n     * Returns the number of attached views.\n     */\n\n  }, {\n    key: \"viewCount\",\n    get: function get() {\n      return this._views.length;\n    }\n  }]);\n\n  return ApplicationRef;\n}();\n\nApplicationRef.decorators = [{\n  type: Injectable\n}];\n\nApplicationRef.ctorParameters = function () {\n  return [{\n    type: NgZone\n  }, {\n    type: Console\n  }, {\n    type: Injector\n  }, {\n    type: ErrorHandler\n  }, {\n    type: ComponentFactoryResolver\n  }, {\n    type: ApplicationInitStatus\n  }];\n};\n\nfunction remove(list, el) {\n  var index = list.indexOf(el);\n\n  if (index > -1) {\n    list.splice(index, 1);\n  }\n}\n\nfunction _lastDefined(args) {\n  for (var i = args.length - 1; i >= 0; i--) {\n    if (args[i] !== undefined) {\n      return args[i];\n    }\n  }\n\n  return undefined;\n}\n\nfunction _mergeArrays(parts) {\n  var result = [];\n  parts.forEach(function (part) {\n    return part && result.push.apply(result, _toConsumableArray(part));\n  });\n  return result;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Used to load ng module factories.\n *\n * @publicApi\n * @deprecated the `string` form of `loadChildren` is deprecated, and `NgModuleFactoryLoader` is\n * part of its implementation. See `LoadChildren` for more details.\n */\n\n\nvar NgModuleFactoryLoader = /*#__PURE__*/_createClass2(function NgModuleFactoryLoader() {\n  _classCallCheck(this, NgModuleFactoryLoader);\n});\n\nfunction getModuleFactory__PRE_R3__(id) {\n  var factory = getRegisteredNgModuleType(id);\n  if (!factory) throw noModuleError(id);\n  return factory;\n}\n\nfunction getModuleFactory__POST_R3__(id) {\n  var type = getRegisteredNgModuleType(id);\n  if (!type) throw noModuleError(id);\n  return new NgModuleFactory$1(type);\n}\n/**\n * Returns the NgModuleFactory with the given id, if it exists and has been loaded.\n * Factories for modules that do not specify an `id` cannot be retrieved. Throws if the module\n * cannot be found.\n * @publicApi\n */\n\n\nvar getModuleFactory = getModuleFactory__PRE_R3__;\n\nfunction noModuleError(id) {\n  return new Error(\"No module with ID \".concat(id, \" loaded\"));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar _SEPARATOR = '#';\nvar FACTORY_CLASS_SUFFIX = 'NgFactory';\n/**\n * Configuration for SystemJsNgModuleLoader.\n * token.\n *\n * @publicApi\n * @deprecated the `string` form of `loadChildren` is deprecated, and `SystemJsNgModuleLoaderConfig`\n * is part of its implementation. See `LoadChildren` for more details.\n */\n\nvar SystemJsNgModuleLoaderConfig = /*#__PURE__*/_createClass2(function SystemJsNgModuleLoaderConfig() {\n  _classCallCheck(this, SystemJsNgModuleLoaderConfig);\n});\n\nvar DEFAULT_CONFIG = {\n  factoryPathPrefix: '',\n  factoryPathSuffix: '.ngfactory'\n};\n/**\n * NgModuleFactoryLoader that uses SystemJS to load NgModuleFactory\n * @publicApi\n * @deprecated the `string` form of `loadChildren` is deprecated, and `SystemJsNgModuleLoader` is\n * part of its implementation. See `LoadChildren` for more details.\n */\n\nvar SystemJsNgModuleLoader = /*#__PURE__*/function () {\n  function SystemJsNgModuleLoader(_compiler, config) {\n    _classCallCheck(this, SystemJsNgModuleLoader);\n\n    this._compiler = _compiler;\n    this._config = config || DEFAULT_CONFIG;\n  }\n\n  _createClass2(SystemJsNgModuleLoader, [{\n    key: \"load\",\n    value: function load(path) {\n      var legacyOfflineMode = !ivyEnabled && this._compiler instanceof Compiler;\n      return legacyOfflineMode ? this.loadFactory(path) : this.loadAndCompile(path);\n    }\n  }, {\n    key: \"loadAndCompile\",\n    value: function loadAndCompile(path) {\n      var _this32 = this;\n\n      var _path$split = path.split(_SEPARATOR),\n          _path$split2 = _slicedToArray(_path$split, 2),\n          module = _path$split2[0],\n          exportName = _path$split2[1];\n\n      if (exportName === undefined) {\n        exportName = 'default';\n      }\n\n      return System.import(module).then(function (module) {\n        return module[exportName];\n      }).then(function (type) {\n        return checkNotEmpty(type, module, exportName);\n      }).then(function (type) {\n        return _this32._compiler.compileModuleAsync(type);\n      });\n    }\n  }, {\n    key: \"loadFactory\",\n    value: function loadFactory(path) {\n      var _path$split3 = path.split(_SEPARATOR),\n          _path$split4 = _slicedToArray(_path$split3, 2),\n          module = _path$split4[0],\n          exportName = _path$split4[1];\n\n      var factoryClassSuffix = FACTORY_CLASS_SUFFIX;\n\n      if (exportName === undefined) {\n        exportName = 'default';\n        factoryClassSuffix = '';\n      }\n\n      return System.import(this._config.factoryPathPrefix + module + this._config.factoryPathSuffix).then(function (module) {\n        return module[exportName + factoryClassSuffix];\n      }).then(function (factory) {\n        return checkNotEmpty(factory, module, exportName);\n      });\n    }\n  }]);\n\n  return SystemJsNgModuleLoader;\n}();\n\nSystemJsNgModuleLoader.decorators = [{\n  type: Injectable\n}];\n\nSystemJsNgModuleLoader.ctorParameters = function () {\n  return [{\n    type: Compiler\n  }, {\n    type: SystemJsNgModuleLoaderConfig,\n    decorators: [{\n      type: Optional\n    }]\n  }];\n};\n\nfunction checkNotEmpty(value, modulePath, exportName) {\n  if (!value) {\n    throw new Error(\"Cannot find '\".concat(exportName, \"' in '\").concat(modulePath, \"'\"));\n  }\n\n  return value;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Represents an Angular [view](guide/glossary#view \"Definition\").\n *\n * @see {@link ChangeDetectorRef#usage-notes Change detection usage}\n *\n * @publicApi\n */\n\n\nvar ViewRef$1 = /*#__PURE__*/function (_ChangeDetectorRef) {\n  _inherits(ViewRef$1, _ChangeDetectorRef);\n\n  var _super20 = _createSuper(ViewRef$1);\n\n  function ViewRef$1() {\n    _classCallCheck(this, ViewRef$1);\n\n    return _super20.apply(this, arguments);\n  }\n\n  return _createClass2(ViewRef$1);\n}(ChangeDetectorRef);\n/**\n * Represents an Angular [view](guide/glossary#view) in a view container.\n * An [embedded view](guide/glossary#view-tree) can be referenced from a component\n * other than the hosting component whose template defines it, or it can be defined\n * independently by a `TemplateRef`.\n *\n * Properties of elements in a view can change, but the structure (number and order) of elements in\n * a view cannot. Change the structure of elements by inserting, moving, or\n * removing nested views in a view container.\n *\n * @see `ViewContainerRef`\n *\n * @usageNotes\n *\n * The following template breaks down into two separate `TemplateRef` instances,\n * an outer one and an inner one.\n *\n * ```\n * Count: {{items.length}}\n * <ul>\n *   <li *ngFor=\"let  item of items\">{{item}}</li>\n * </ul>\n * ```\n *\n * This is the outer `TemplateRef`:\n *\n * ```\n * Count: {{items.length}}\n * <ul>\n *   <ng-template ngFor let-item [ngForOf]=\"items\"></ng-template>\n * </ul>\n * ```\n *\n * This is the inner `TemplateRef`:\n *\n * ```\n *   <li>{{item}}</li>\n * ```\n *\n * The outer and inner `TemplateRef` instances are assembled into views as follows:\n *\n * ```\n * <!-- ViewRef: outer-0 -->\n * Count: 2\n * <ul>\n *   <ng-template view-container-ref></ng-template>\n *   <!-- ViewRef: inner-1 --><li>first</li><!-- /ViewRef: inner-1 -->\n *   <!-- ViewRef: inner-2 --><li>second</li><!-- /ViewRef: inner-2 -->\n * </ul>\n * <!-- /ViewRef: outer-0 -->\n * ```\n * @publicApi\n */\n\n\nvar EmbeddedViewRef = /*#__PURE__*/function (_ViewRef$) {\n  _inherits(EmbeddedViewRef, _ViewRef$);\n\n  var _super21 = _createSuper(EmbeddedViewRef);\n\n  function EmbeddedViewRef() {\n    _classCallCheck(this, EmbeddedViewRef);\n\n    return _super21.apply(this, arguments);\n  }\n\n  return _createClass2(EmbeddedViewRef);\n}(ViewRef$1);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @publicApi\n */\n\n\nvar DebugEventListener = /*#__PURE__*/_createClass2(function DebugEventListener(name, callback) {\n  _classCallCheck(this, DebugEventListener);\n\n  this.name = name;\n  this.callback = callback;\n});\n\nvar DebugNode__PRE_R3__ = /*#__PURE__*/function () {\n  function DebugNode__PRE_R3__(nativeNode, parent, _debugContext) {\n    _classCallCheck(this, DebugNode__PRE_R3__);\n\n    this.listeners = [];\n    this.parent = null;\n    this._debugContext = _debugContext;\n    this.nativeNode = nativeNode;\n\n    if (parent && parent instanceof DebugElement__PRE_R3__) {\n      parent.addChild(this);\n    }\n  }\n\n  _createClass2(DebugNode__PRE_R3__, [{\n    key: \"injector\",\n    get: function get() {\n      return this._debugContext.injector;\n    }\n  }, {\n    key: \"componentInstance\",\n    get: function get() {\n      return this._debugContext.component;\n    }\n  }, {\n    key: \"context\",\n    get: function get() {\n      return this._debugContext.context;\n    }\n  }, {\n    key: \"references\",\n    get: function get() {\n      return this._debugContext.references;\n    }\n  }, {\n    key: \"providerTokens\",\n    get: function get() {\n      return this._debugContext.providerTokens;\n    }\n  }]);\n\n  return DebugNode__PRE_R3__;\n}();\n\nvar DebugElement__PRE_R3__ = /*#__PURE__*/function (_DebugNode__PRE_R3__) {\n  _inherits(DebugElement__PRE_R3__, _DebugNode__PRE_R3__);\n\n  var _super22 = _createSuper(DebugElement__PRE_R3__);\n\n  function DebugElement__PRE_R3__(nativeNode, parent, _debugContext) {\n    var _this33;\n\n    _classCallCheck(this, DebugElement__PRE_R3__);\n\n    _this33 = _super22.call(this, nativeNode, parent, _debugContext);\n    _this33.properties = {};\n    _this33.attributes = {};\n    _this33.classes = {};\n    _this33.styles = {};\n    _this33.childNodes = [];\n    _this33.nativeElement = nativeNode;\n    return _this33;\n  }\n\n  _createClass2(DebugElement__PRE_R3__, [{\n    key: \"addChild\",\n    value: function addChild(child) {\n      if (child) {\n        this.childNodes.push(child);\n        child.parent = this;\n      }\n    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this.childNodes.indexOf(refChild);\n\n      if (refIndex === -1) {\n        this.addChild(newChild);\n      } else {\n        if (newChild.parent) {\n          newChild.parent.removeChild(newChild);\n        }\n\n        newChild.parent = this;\n        this.childNodes.splice(refIndex, 0, newChild);\n      }\n    }\n  }, {\n    key: \"query\",\n    value: function query(predicate) {\n      var results = this.queryAll(predicate);\n      return results[0] || null;\n    }\n  }, {\n    key: \"queryAll\",\n    value: function queryAll(predicate) {\n      var matches = [];\n\n      _queryElementChildren(this, predicate, matches);\n\n      return matches;\n    }\n  }, {\n    key: \"queryAllNodes\",\n    value: function queryAllNodes(predicate) {\n      var matches = [];\n\n      _queryNodeChildren(this, predicate, matches);\n\n      return matches;\n    }\n  }, {\n    key: \"children\",\n    get: function get() {\n      return this.childNodes //\n      .filter(function (node) {\n        return node instanceof DebugElement__PRE_R3__;\n      });\n    }\n  }, {\n    key: \"triggerEventHandler\",\n    value: function triggerEventHandler(eventName, eventObj) {\n      this.listeners.forEach(function (listener) {\n        if (listener.name == eventName) {\n          listener.callback(eventObj);\n        }\n      });\n    }\n  }]);\n\n  return DebugElement__PRE_R3__;\n}(DebugNode__PRE_R3__);\n/**\n * @publicApi\n */\n\n\nfunction asNativeElements(debugEls) {\n  return debugEls.map(function (el) {\n    return el.nativeElement;\n  });\n}\n\nfunction _queryElementChildren(element, predicate, matches) {\n  element.childNodes.forEach(function (node) {\n    if (node instanceof DebugElement__PRE_R3__) {\n      if (predicate(node)) {\n        matches.push(node);\n      }\n\n      _queryElementChildren(node, predicate, matches);\n    }\n  });\n}\n\nfunction _queryNodeChildren(parentNode, predicate, matches) {\n  if (parentNode instanceof DebugElement__PRE_R3__) {\n    parentNode.childNodes.forEach(function (node) {\n      if (predicate(node)) {\n        matches.push(node);\n      }\n\n      if (node instanceof DebugElement__PRE_R3__) {\n        _queryNodeChildren(node, predicate, matches);\n      }\n    });\n  }\n}\n\nvar DebugNode__POST_R3__ = /*#__PURE__*/function () {\n  function DebugNode__POST_R3__(nativeNode) {\n    _classCallCheck(this, DebugNode__POST_R3__);\n\n    this.nativeNode = nativeNode;\n  }\n\n  _createClass2(DebugNode__POST_R3__, [{\n    key: \"parent\",\n    get: function get() {\n      var parent = this.nativeNode.parentNode;\n      return parent ? new DebugElement__POST_R3__(parent) : null;\n    }\n  }, {\n    key: \"injector\",\n    get: function get() {\n      return getInjector(this.nativeNode);\n    }\n  }, {\n    key: \"componentInstance\",\n    get: function get() {\n      var nativeElement = this.nativeNode;\n      return nativeElement && (getComponent(nativeElement) || getOwningComponent(nativeElement));\n    }\n  }, {\n    key: \"context\",\n    get: function get() {\n      return getComponent(this.nativeNode) || getContext(this.nativeNode);\n    }\n  }, {\n    key: \"listeners\",\n    get: function get() {\n      return getListeners(this.nativeNode).filter(function (listener) {\n        return listener.type === 'dom';\n      });\n    }\n  }, {\n    key: \"references\",\n    get: function get() {\n      return getLocalRefs(this.nativeNode);\n    }\n  }, {\n    key: \"providerTokens\",\n    get: function get() {\n      return getInjectionTokens(this.nativeNode);\n    }\n  }]);\n\n  return DebugNode__POST_R3__;\n}();\n\nvar DebugElement__POST_R3__ = /*#__PURE__*/function (_DebugNode__POST_R3__) {\n  _inherits(DebugElement__POST_R3__, _DebugNode__POST_R3__);\n\n  var _super23 = _createSuper(DebugElement__POST_R3__);\n\n  function DebugElement__POST_R3__(nativeNode) {\n    _classCallCheck(this, DebugElement__POST_R3__);\n\n    ngDevMode && assertDomNode(nativeNode);\n    return _super23.call(this, nativeNode);\n  }\n\n  _createClass2(DebugElement__POST_R3__, [{\n    key: \"nativeElement\",\n    get: function get() {\n      return this.nativeNode.nodeType == Node.ELEMENT_NODE ? this.nativeNode : null;\n    }\n  }, {\n    key: \"name\",\n    get: function get() {\n      try {\n        var context = loadLContext(this.nativeNode);\n        var lView = context.lView;\n        var tData = lView[TVIEW].data;\n        var tNode = tData[context.nodeIndex];\n        return tNode.value;\n      } catch (e) {\n        return this.nativeNode.nodeName;\n      }\n    }\n    /**\n     *  Gets a map of property names to property values for an element.\n     *\n     *  This map includes:\n     *  - Regular property bindings (e.g. `[id]=\"id\"`)\n     *  - Host property bindings (e.g. `host: { '[id]': \"id\" }`)\n     *  - Interpolated property bindings (e.g. `id=\"{{ value }}\")\n     *\n     *  It does not include:\n     *  - input property bindings (e.g. `[myCustomInput]=\"value\"`)\n     *  - attribute bindings (e.g. `[attr.role]=\"menu\"`)\n     */\n\n  }, {\n    key: \"properties\",\n    get: function get() {\n      var context = loadLContext(this.nativeNode, false);\n\n      if (context == null) {\n        return {};\n      }\n\n      var lView = context.lView;\n      var tData = lView[TVIEW].data;\n      var tNode = tData[context.nodeIndex];\n      var properties = {}; // Collect properties from the DOM.\n\n      copyDomProperties(this.nativeElement, properties); // Collect properties from the bindings. This is needed for animation renderer which has\n      // synthetic properties which don't get reflected into the DOM.\n\n      collectPropertyBindings(properties, tNode, lView, tData);\n      return properties;\n    }\n  }, {\n    key: \"attributes\",\n    get: function get() {\n      var attributes = {};\n      var element = this.nativeElement;\n\n      if (!element) {\n        return attributes;\n      }\n\n      var context = loadLContext(element, false);\n\n      if (context == null) {\n        return {};\n      }\n\n      var lView = context.lView;\n      var tNodeAttrs = lView[TVIEW].data[context.nodeIndex].attrs;\n      var lowercaseTNodeAttrs = []; // For debug nodes we take the element's attribute directly from the DOM since it allows us\n      // to account for ones that weren't set via bindings (e.g. ViewEngine keeps track of the ones\n      // that are set through `Renderer2`). The problem is that the browser will lowercase all names,\n      // however since we have the attributes already on the TNode, we can preserve the case by going\n      // through them once, adding them to the `attributes` map and putting their lower-cased name\n      // into an array. Afterwards when we're going through the native DOM attributes, we can check\n      // whether we haven't run into an attribute already through the TNode.\n\n      if (tNodeAttrs) {\n        var i = 0;\n\n        while (i < tNodeAttrs.length) {\n          var attrName = tNodeAttrs[i]; // Stop as soon as we hit a marker. We only care about the regular attributes. Everything\n          // else will be handled below when we read the final attributes off the DOM.\n\n          if (typeof attrName !== 'string') break;\n          var attrValue = tNodeAttrs[i + 1];\n          attributes[attrName] = attrValue;\n          lowercaseTNodeAttrs.push(attrName.toLowerCase());\n          i += 2;\n        }\n      }\n\n      var eAttrs = element.attributes;\n\n      for (var _i9 = 0; _i9 < eAttrs.length; _i9++) {\n        var attr = eAttrs[_i9];\n        var lowercaseName = attr.name.toLowerCase(); // Make sure that we don't assign the same attribute both in its\n        // case-sensitive form and the lower-cased one from the browser.\n\n        if (lowercaseTNodeAttrs.indexOf(lowercaseName) === -1) {\n          // Save the lowercase name to align the behavior between browsers.\n          // IE preserves the case, while all other browser convert it to lower case.\n          attributes[lowercaseName] = attr.value;\n        }\n      }\n\n      return attributes;\n    }\n  }, {\n    key: \"styles\",\n    get: function get() {\n      if (this.nativeElement && this.nativeElement.style) {\n        return this.nativeElement.style;\n      }\n\n      return {};\n    }\n  }, {\n    key: \"classes\",\n    get: function get() {\n      var result = {};\n      var element = this.nativeElement; // SVG elements return an `SVGAnimatedString` instead of a plain string for the `className`.\n\n      var className = element.className;\n      var classes = className && typeof className !== 'string' ? className.baseVal.split(' ') : className.split(' ');\n      classes.forEach(function (value) {\n        return result[value] = true;\n      });\n      return result;\n    }\n  }, {\n    key: \"childNodes\",\n    get: function get() {\n      var childNodes = this.nativeNode.childNodes;\n      var children = [];\n\n      for (var i = 0; i < childNodes.length; i++) {\n        var element = childNodes[i];\n        children.push(getDebugNode__POST_R3__(element));\n      }\n\n      return children;\n    }\n  }, {\n    key: \"children\",\n    get: function get() {\n      var nativeElement = this.nativeElement;\n      if (!nativeElement) return [];\n      var childNodes = nativeElement.children;\n      var children = [];\n\n      for (var i = 0; i < childNodes.length; i++) {\n        var element = childNodes[i];\n        children.push(getDebugNode__POST_R3__(element));\n      }\n\n      return children;\n    }\n  }, {\n    key: \"query\",\n    value: function query(predicate) {\n      var results = this.queryAll(predicate);\n      return results[0] || null;\n    }\n  }, {\n    key: \"queryAll\",\n    value: function queryAll(predicate) {\n      var matches = [];\n\n      _queryAllR3(this, predicate, matches, true);\n\n      return matches;\n    }\n  }, {\n    key: \"queryAllNodes\",\n    value: function queryAllNodes(predicate) {\n      var matches = [];\n\n      _queryAllR3(this, predicate, matches, false);\n\n      return matches;\n    }\n  }, {\n    key: \"triggerEventHandler\",\n    value: function triggerEventHandler(eventName, eventObj) {\n      var node = this.nativeNode;\n      var invokedListeners = [];\n      this.listeners.forEach(function (listener) {\n        if (listener.name === eventName) {\n          var callback = listener.callback;\n          callback.call(node, eventObj);\n          invokedListeners.push(callback);\n        }\n      }); // We need to check whether `eventListeners` exists, because it's something\n      // that Zone.js only adds to `EventTarget` in browser environments.\n\n      if (typeof node.eventListeners === 'function') {\n        // Note that in Ivy we wrap event listeners with a call to `event.preventDefault` in some\n        // cases. We use '__ngUnwrap__' as a special token that gives us access to the actual event\n        // listener.\n        node.eventListeners(eventName).forEach(function (listener) {\n          // In order to ensure that we can detect the special __ngUnwrap__ token described above, we\n          // use `toString` on the listener and see if it contains the token. We use this approach to\n          // ensure that it still worked with compiled code since it cannot remove or rename string\n          // literals. We also considered using a special function name (i.e. if(listener.name ===\n          // special)) but that was more cumbersome and we were also concerned the compiled code could\n          // strip the name, turning the condition in to (\"\" === \"\") and always returning true.\n          if (listener.toString().indexOf('__ngUnwrap__') !== -1) {\n            var unwrappedListener = listener('__ngUnwrap__');\n            return invokedListeners.indexOf(unwrappedListener) === -1 && unwrappedListener.call(node, eventObj);\n          }\n        });\n      }\n    }\n  }]);\n\n  return DebugElement__POST_R3__;\n}(DebugNode__POST_R3__);\n\nfunction copyDomProperties(element, properties) {\n  if (element) {\n    // Skip own properties (as those are patched)\n    var obj = Object.getPrototypeOf(element);\n    var NodePrototype = Node.prototype;\n\n    while (obj !== null && obj !== NodePrototype) {\n      var descriptors = Object.getOwnPropertyDescriptors(obj);\n\n      for (var key in descriptors) {\n        if (!key.startsWith('__') && !key.startsWith('on')) {\n          // don't include properties starting with `__` and `on`.\n          // `__` are patched values which should not be included.\n          // `on` are listeners which also should not be included.\n          var value = element[key];\n\n          if (isPrimitiveValue(value)) {\n            properties[key] = value;\n          }\n        }\n      }\n\n      obj = Object.getPrototypeOf(obj);\n    }\n  }\n}\n\nfunction isPrimitiveValue(value) {\n  return typeof value === 'string' || typeof value === 'boolean' || typeof value === 'number' || value === null;\n}\n\nfunction _queryAllR3(parentElement, predicate, matches, elementsOnly) {\n  var context = loadLContext(parentElement.nativeNode, false);\n\n  if (context !== null) {\n    var parentTNode = context.lView[TVIEW].data[context.nodeIndex];\n\n    _queryNodeChildrenR3(parentTNode, context.lView, predicate, matches, elementsOnly, parentElement.nativeNode);\n  } else {\n    // If the context is null, then `parentElement` was either created with Renderer2 or native DOM\n    // APIs.\n    _queryNativeNodeDescendants(parentElement.nativeNode, predicate, matches, elementsOnly);\n  }\n}\n/**\n * Recursively match the current TNode against the predicate, and goes on with the next ones.\n *\n * @param tNode the current TNode\n * @param lView the LView of this TNode\n * @param predicate the predicate to match\n * @param matches the list of positive matches\n * @param elementsOnly whether only elements should be searched\n * @param rootNativeNode the root native node on which predicate should not be matched\n */\n\n\nfunction _queryNodeChildrenR3(tNode, lView, predicate, matches, elementsOnly, rootNativeNode) {\n  ngDevMode && assertTNodeForLView(tNode, lView);\n  var nativeNode = getNativeByTNodeOrNull(tNode, lView); // For each type of TNode, specific logic is executed.\n\n  if (tNode.type & (3\n  /* AnyRNode */\n  | 8\n  /* ElementContainer */\n  )) {\n    // Case 1: the TNode is an element\n    // The native node has to be checked.\n    _addQueryMatchR3(nativeNode, predicate, matches, elementsOnly, rootNativeNode);\n\n    if (isComponentHost(tNode)) {\n      // If the element is the host of a component, then all nodes in its view have to be processed.\n      // Note: the component's content (tNode.child) will be processed from the insertion points.\n      var componentView = getComponentLViewByIndex(tNode.index, lView);\n\n      if (componentView && componentView[TVIEW].firstChild) {\n        _queryNodeChildrenR3(componentView[TVIEW].firstChild, componentView, predicate, matches, elementsOnly, rootNativeNode);\n      }\n    } else {\n      if (tNode.child) {\n        // Otherwise, its children have to be processed.\n        _queryNodeChildrenR3(tNode.child, lView, predicate, matches, elementsOnly, rootNativeNode);\n      } // We also have to query the DOM directly in order to catch elements inserted through\n      // Renderer2. Note that this is __not__ optimal, because we're walking similar trees multiple\n      // times. ViewEngine could do it more efficiently, because all the insertions go through\n      // Renderer2, however that's not the case in Ivy. This approach is being used because:\n      // 1. Matching the ViewEngine behavior would mean potentially introducing a depedency\n      //    from `Renderer2` to Ivy which could bring Ivy code into ViewEngine.\n      // 2. We would have to make `Renderer3` \"know\" about debug nodes.\n      // 3. It allows us to capture nodes that were inserted directly via the DOM.\n\n\n      nativeNode && _queryNativeNodeDescendants(nativeNode, predicate, matches, elementsOnly);\n    } // In all cases, if a dynamic container exists for this node, each view inside it has to be\n    // processed.\n\n\n    var nodeOrContainer = lView[tNode.index];\n\n    if (isLContainer(nodeOrContainer)) {\n      _queryNodeChildrenInContainerR3(nodeOrContainer, predicate, matches, elementsOnly, rootNativeNode);\n    }\n  } else if (tNode.type & 4\n  /* Container */\n  ) {\n    // Case 2: the TNode is a container\n    // The native node has to be checked.\n    var lContainer = lView[tNode.index];\n\n    _addQueryMatchR3(lContainer[NATIVE], predicate, matches, elementsOnly, rootNativeNode); // Each view inside the container has to be processed.\n\n\n    _queryNodeChildrenInContainerR3(lContainer, predicate, matches, elementsOnly, rootNativeNode);\n  } else if (tNode.type & 16\n  /* Projection */\n  ) {\n    // Case 3: the TNode is a projection insertion point (i.e. a <ng-content>).\n    // The nodes projected at this location all need to be processed.\n    var _componentView = lView[DECLARATION_COMPONENT_VIEW];\n    var componentHost = _componentView[T_HOST];\n    var head = componentHost.projection[tNode.projection];\n\n    if (Array.isArray(head)) {\n      var _iterator7 = _createForOfIteratorHelper(head),\n          _step7;\n\n      try {\n        for (_iterator7.s(); !(_step7 = _iterator7.n()).done;) {\n          var _nativeNode2 = _step7.value;\n\n          _addQueryMatchR3(_nativeNode2, predicate, matches, elementsOnly, rootNativeNode);\n        }\n      } catch (err) {\n        _iterator7.e(err);\n      } finally {\n        _iterator7.f();\n      }\n    } else if (head) {\n      var nextLView = _componentView[PARENT];\n      var nextTNode = nextLView[TVIEW].data[head.index];\n\n      _queryNodeChildrenR3(nextTNode, nextLView, predicate, matches, elementsOnly, rootNativeNode);\n    }\n  } else if (tNode.child) {\n    // Case 4: the TNode is a view.\n    _queryNodeChildrenR3(tNode.child, lView, predicate, matches, elementsOnly, rootNativeNode);\n  } // We don't want to go to the next sibling of the root node.\n\n\n  if (rootNativeNode !== nativeNode) {\n    // To determine the next node to be processed, we need to use the next or the projectionNext\n    // link, depending on whether the current node has been projected.\n    var _nextTNode = tNode.flags & 4\n    /* isProjected */\n    ? tNode.projectionNext : tNode.next;\n\n    if (_nextTNode) {\n      _queryNodeChildrenR3(_nextTNode, lView, predicate, matches, elementsOnly, rootNativeNode);\n    }\n  }\n}\n/**\n * Process all TNodes in a given container.\n *\n * @param lContainer the container to be processed\n * @param predicate the predicate to match\n * @param matches the list of positive matches\n * @param elementsOnly whether only elements should be searched\n * @param rootNativeNode the root native node on which predicate should not be matched\n */\n\n\nfunction _queryNodeChildrenInContainerR3(lContainer, predicate, matches, elementsOnly, rootNativeNode) {\n  for (var i = CONTAINER_HEADER_OFFSET; i < lContainer.length; i++) {\n    var childView = lContainer[i];\n    var firstChild = childView[TVIEW].firstChild;\n\n    if (firstChild) {\n      _queryNodeChildrenR3(firstChild, childView, predicate, matches, elementsOnly, rootNativeNode);\n    }\n  }\n}\n/**\n * Match the current native node against the predicate.\n *\n * @param nativeNode the current native node\n * @param predicate the predicate to match\n * @param matches the list of positive matches\n * @param elementsOnly whether only elements should be searched\n * @param rootNativeNode the root native node on which predicate should not be matched\n */\n\n\nfunction _addQueryMatchR3(nativeNode, predicate, matches, elementsOnly, rootNativeNode) {\n  if (rootNativeNode !== nativeNode) {\n    var debugNode = getDebugNode$1(nativeNode);\n\n    if (!debugNode) {\n      return;\n    } // Type of the \"predicate and \"matches\" array are set based on the value of\n    // the \"elementsOnly\" parameter. TypeScript is not able to properly infer these\n    // types with generics, so we manually cast the parameters accordingly.\n\n\n    if (elementsOnly && debugNode instanceof DebugElement__POST_R3__ && predicate(debugNode) && matches.indexOf(debugNode) === -1) {\n      matches.push(debugNode);\n    } else if (!elementsOnly && predicate(debugNode) && matches.indexOf(debugNode) === -1) {\n      matches.push(debugNode);\n    }\n  }\n}\n/**\n * Match all the descendants of a DOM node against a predicate.\n *\n * @param nativeNode the current native node\n * @param predicate the predicate to match\n * @param matches the list where matches are stored\n * @param elementsOnly whether only elements should be searched\n */\n\n\nfunction _queryNativeNodeDescendants(parentNode, predicate, matches, elementsOnly) {\n  var nodes = parentNode.childNodes;\n  var length = nodes.length;\n\n  for (var i = 0; i < length; i++) {\n    var node = nodes[i];\n    var debugNode = getDebugNode$1(node);\n\n    if (debugNode) {\n      if (elementsOnly && debugNode instanceof DebugElement__POST_R3__ && predicate(debugNode) && matches.indexOf(debugNode) === -1) {\n        matches.push(debugNode);\n      } else if (!elementsOnly && predicate(debugNode) && matches.indexOf(debugNode) === -1) {\n        matches.push(debugNode);\n      }\n\n      _queryNativeNodeDescendants(node, predicate, matches, elementsOnly);\n    }\n  }\n}\n/**\n * Iterates through the property bindings for a given node and generates\n * a map of property names to values. This map only contains property bindings\n * defined in templates, not in host bindings.\n */\n\n\nfunction collectPropertyBindings(properties, tNode, lView, tData) {\n  var bindingIndexes = tNode.propertyBindings;\n\n  if (bindingIndexes !== null) {\n    for (var i = 0; i < bindingIndexes.length; i++) {\n      var bindingIndex = bindingIndexes[i];\n      var propMetadata = tData[bindingIndex];\n      var metadataParts = propMetadata.split(INTERPOLATION_DELIMITER);\n      var propertyName = metadataParts[0];\n\n      if (metadataParts.length > 1) {\n        var value = metadataParts[1];\n\n        for (var j = 1; j < metadataParts.length - 1; j++) {\n          value += renderStringify(lView[bindingIndex + j - 1]) + metadataParts[j + 1];\n        }\n\n        properties[propertyName] = value;\n      } else {\n        properties[propertyName] = lView[bindingIndex];\n      }\n    }\n  }\n} // Need to keep the nodes in a global Map so that multiple angular apps are supported.\n\n\nvar _nativeNodeToDebugNode = new Map();\n\nfunction getDebugNode__PRE_R3__(nativeNode) {\n  return _nativeNodeToDebugNode.get(nativeNode) || null;\n}\n\nvar NG_DEBUG_PROPERTY = '__ng_debug__';\n\nfunction getDebugNode__POST_R3__(nativeNode) {\n  if (nativeNode instanceof Node) {\n    if (!nativeNode.hasOwnProperty(NG_DEBUG_PROPERTY)) {\n      nativeNode[NG_DEBUG_PROPERTY] = nativeNode.nodeType == Node.ELEMENT_NODE ? new DebugElement__POST_R3__(nativeNode) : new DebugNode__POST_R3__(nativeNode);\n    }\n\n    return nativeNode[NG_DEBUG_PROPERTY];\n  }\n\n  return null;\n}\n/**\n * @publicApi\n */\n\n\nvar getDebugNode$1 = getDebugNode__PRE_R3__;\n\nfunction getDebugNodeR2__PRE_R3__(nativeNode) {\n  return getDebugNode__PRE_R3__(nativeNode);\n}\n\nfunction getDebugNodeR2__POST_R3__(_nativeNode) {\n  return null;\n}\n\nvar getDebugNodeR2 = getDebugNodeR2__PRE_R3__;\n\nfunction getAllDebugNodes() {\n  return Array.from(_nativeNodeToDebugNode.values());\n}\n\nfunction indexDebugNode(node) {\n  _nativeNodeToDebugNode.set(node.nativeNode, node);\n}\n\nfunction removeDebugNodeFromIndex(node) {\n  _nativeNodeToDebugNode.delete(node.nativeNode);\n}\n/**\n * @publicApi\n */\n\n\nvar DebugNode = DebugNode__PRE_R3__;\n/**\n * @publicApi\n */\n\nvar DebugElement = DebugElement__PRE_R3__;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar _CORE_PLATFORM_PROVIDERS = [// Set a default platform name for platforms that don't set it explicitly.\n{\n  provide: PLATFORM_ID,\n  useValue: 'unknown'\n}, {\n  provide: PlatformRef,\n  deps: [Injector]\n}, {\n  provide: TestabilityRegistry,\n  deps: []\n}, {\n  provide: Console,\n  deps: []\n}];\n/**\n * This platform has to be included in any other platform\n *\n * @publicApi\n */\n\nvar platformCore = createPlatformFactory(null, 'core', _CORE_PLATFORM_PROVIDERS);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nfunction _iterableDiffersFactory() {\n  return defaultIterableDiffers;\n}\n\nfunction _keyValueDiffersFactory() {\n  return defaultKeyValueDiffers;\n}\n\nfunction _localeFactory(locale) {\n  locale = locale || getGlobalLocale();\n\n  if (ivyEnabled) {\n    setLocaleId(locale);\n  }\n\n  return locale;\n}\n/**\n * Work out the locale from the potential global properties.\n *\n * * Closure Compiler: use `goog.LOCALE`.\n * * Ivy enabled: use `$localize.locale`\n */\n\n\nfunction getGlobalLocale() {\n  if (typeof ngI18nClosureMode !== 'undefined' && ngI18nClosureMode && typeof goog !== 'undefined' && goog.LOCALE !== 'en') {\n    // * The default `goog.LOCALE` value is `en`, while Angular used `en-US`.\n    // * In order to preserve backwards compatibility, we use Angular default value over\n    //   Closure Compiler's one.\n    return goog.LOCALE;\n  } else {\n    // KEEP `typeof $localize !== 'undefined' && $localize.locale` IN SYNC WITH THE LOCALIZE\n    // COMPILE-TIME INLINER.\n    //\n    // * During compile time inlining of translations the expression will be replaced\n    //   with a string literal that is the current locale. Other forms of this expression are not\n    //   guaranteed to be replaced.\n    //\n    // * During runtime translation evaluation, the developer is required to set `$localize.locale`\n    //   if required, or just to provide their own `LOCALE_ID` provider.\n    return ivyEnabled && typeof $localize !== 'undefined' && $localize.locale || DEFAULT_LOCALE_ID;\n  }\n}\n\nvar ɵ0$f = USD_CURRENCY_CODE;\n/**\n * A built-in [dependency injection token](guide/glossary#di-token)\n * that is used to configure the root injector for bootstrapping.\n */\n\nvar APPLICATION_MODULE_PROVIDERS = [{\n  provide: ApplicationRef,\n  useClass: ApplicationRef,\n  deps: [NgZone, Console, Injector, ErrorHandler, ComponentFactoryResolver, ApplicationInitStatus]\n}, {\n  provide: SCHEDULER,\n  deps: [NgZone],\n  useFactory: zoneSchedulerFactory\n}, {\n  provide: ApplicationInitStatus,\n  useClass: ApplicationInitStatus,\n  deps: [[new Optional(), APP_INITIALIZER]]\n}, {\n  provide: Compiler,\n  useClass: Compiler,\n  deps: []\n}, APP_ID_RANDOM_PROVIDER, {\n  provide: IterableDiffers,\n  useFactory: _iterableDiffersFactory,\n  deps: []\n}, {\n  provide: KeyValueDiffers,\n  useFactory: _keyValueDiffersFactory,\n  deps: []\n}, {\n  provide: LOCALE_ID$1,\n  useFactory: _localeFactory,\n  deps: [[new Inject(LOCALE_ID$1), new Optional(), new SkipSelf()]]\n}, {\n  provide: DEFAULT_CURRENCY_CODE,\n  useValue: ɵ0$f\n}];\n/**\n * Schedule work at next available slot.\n *\n * In Ivy this is just `requestAnimationFrame`. For compatibility reasons when bootstrapped\n * using `platformRef.bootstrap` we need to use `NgZone.onStable` as the scheduling mechanism.\n * This overrides the scheduling mechanism in Ivy to `NgZone.onStable`.\n *\n * @param ngZone NgZone to use for scheduling.\n */\n\nfunction zoneSchedulerFactory(ngZone) {\n  var queue = [];\n  ngZone.onStable.subscribe(function () {\n    while (queue.length) {\n      queue.pop()();\n    }\n  });\n  return function (fn) {\n    queue.push(fn);\n  };\n}\n/**\n * Configures the root injector for an app with\n * providers of `@angular/core` dependencies that `ApplicationRef` needs\n * to bootstrap components.\n *\n * Re-exported by `BrowserModule`, which is included automatically in the root\n * `AppModule` when you create a new app with the CLI `new` command.\n *\n * @publicApi\n */\n\n\nvar ApplicationModule = /*#__PURE__*/_createClass2( // Inject ApplicationRef to make it eager...\nfunction ApplicationModule(appRef) {\n  _classCallCheck(this, ApplicationModule);\n});\n\nApplicationModule.decorators = [{\n  type: NgModule,\n  args: [{\n    providers: APPLICATION_MODULE_PROVIDERS\n  }]\n}];\n\nApplicationModule.ctorParameters = function () {\n  return [{\n    type: ApplicationRef\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction anchorDef(flags, matchedQueriesDsl, ngContentIndex, childCount, handleEvent, templateFactory) {\n  flags |= 1\n  /* TypeElement */\n  ;\n\n  var _splitMatchedQueriesD2 = splitMatchedQueriesDsl(matchedQueriesDsl),\n      matchedQueries = _splitMatchedQueriesD2.matchedQueries,\n      references = _splitMatchedQueriesD2.references,\n      matchedQueryIds = _splitMatchedQueriesD2.matchedQueryIds;\n\n  var template = templateFactory ? resolveDefinition(templateFactory) : null;\n  return {\n    // will bet set by the view definition\n    nodeIndex: -1,\n    parent: null,\n    renderParent: null,\n    bindingIndex: -1,\n    outputIndex: -1,\n    // regular values\n    flags: flags,\n    checkIndex: -1,\n    childFlags: 0,\n    directChildFlags: 0,\n    childMatchedQueries: 0,\n    matchedQueries: matchedQueries,\n    matchedQueryIds: matchedQueryIds,\n    references: references,\n    ngContentIndex: ngContentIndex,\n    childCount: childCount,\n    bindings: [],\n    bindingFlags: 0,\n    outputs: [],\n    element: {\n      ns: null,\n      name: null,\n      attrs: null,\n      template: template,\n      componentProvider: null,\n      componentView: null,\n      componentRendererType: null,\n      publicProviders: null,\n      allProviders: null,\n      handleEvent: handleEvent || NOOP\n    },\n    provider: null,\n    text: null,\n    query: null,\n    ngContent: null\n  };\n}\n\nfunction elementDef(checkIndex, flags, matchedQueriesDsl, ngContentIndex, childCount, namespaceAndName) {\n  var fixedAttrs = arguments.length > 6 && arguments[6] !== undefined ? arguments[6] : [];\n  var bindings = arguments.length > 7 ? arguments[7] : undefined;\n  var outputs = arguments.length > 8 ? arguments[8] : undefined;\n  var handleEvent = arguments.length > 9 ? arguments[9] : undefined;\n  var componentView = arguments.length > 10 ? arguments[10] : undefined;\n  var componentRendererType = arguments.length > 11 ? arguments[11] : undefined;\n\n  if (!handleEvent) {\n    handleEvent = NOOP;\n  }\n\n  var _splitMatchedQueriesD3 = splitMatchedQueriesDsl(matchedQueriesDsl),\n      matchedQueries = _splitMatchedQueriesD3.matchedQueries,\n      references = _splitMatchedQueriesD3.references,\n      matchedQueryIds = _splitMatchedQueriesD3.matchedQueryIds;\n\n  var ns = null;\n  var name = null;\n\n  if (namespaceAndName) {\n    var _splitNamespace = splitNamespace(namespaceAndName);\n\n    var _splitNamespace2 = _slicedToArray(_splitNamespace, 2);\n\n    ns = _splitNamespace2[0];\n    name = _splitNamespace2[1];\n  }\n\n  bindings = bindings || [];\n  var bindingDefs = [];\n\n  for (var i = 0; i < bindings.length; i++) {\n    var _bindings$i = _slicedToArray(bindings[i], 3),\n        bindingFlags = _bindings$i[0],\n        _namespaceAndName = _bindings$i[1],\n        suffixOrSecurityContext = _bindings$i[2];\n\n    var _splitNamespace3 = splitNamespace(_namespaceAndName),\n        _splitNamespace4 = _slicedToArray(_splitNamespace3, 2),\n        _ns = _splitNamespace4[0],\n        _name = _splitNamespace4[1];\n\n    var securityContext = undefined;\n    var suffix = undefined;\n\n    switch (bindingFlags & 15\n    /* Types */\n    ) {\n      case 4\n      /* TypeElementStyle */\n      :\n        suffix = suffixOrSecurityContext;\n        break;\n\n      case 1\n      /* TypeElementAttribute */\n      :\n      case 8\n      /* TypeProperty */\n      :\n        securityContext = suffixOrSecurityContext;\n        break;\n    }\n\n    bindingDefs[i] = {\n      flags: bindingFlags,\n      ns: _ns,\n      name: _name,\n      nonMinifiedName: _name,\n      securityContext: securityContext,\n      suffix: suffix\n    };\n  }\n\n  outputs = outputs || [];\n  var outputDefs = [];\n\n  for (var _i10 = 0; _i10 < outputs.length; _i10++) {\n    var _outputs$_i = _slicedToArray(outputs[_i10], 2),\n        target = _outputs$_i[0],\n        eventName = _outputs$_i[1];\n\n    outputDefs[_i10] = {\n      type: 0\n      /* ElementOutput */\n      ,\n      target: target,\n      eventName: eventName,\n      propName: null\n    };\n  }\n\n  fixedAttrs = fixedAttrs || [];\n  var attrs = fixedAttrs.map(function (_ref4) {\n    var _ref5 = _slicedToArray(_ref4, 2),\n        namespaceAndName = _ref5[0],\n        value = _ref5[1];\n\n    var _splitNamespace5 = splitNamespace(namespaceAndName),\n        _splitNamespace6 = _slicedToArray(_splitNamespace5, 2),\n        ns = _splitNamespace6[0],\n        name = _splitNamespace6[1];\n\n    return [ns, name, value];\n  });\n  componentRendererType = resolveRendererType2(componentRendererType);\n\n  if (componentView) {\n    flags |= 33554432\n    /* ComponentView */\n    ;\n  }\n\n  flags |= 1\n  /* TypeElement */\n  ;\n  return {\n    // will bet set by the view definition\n    nodeIndex: -1,\n    parent: null,\n    renderParent: null,\n    bindingIndex: -1,\n    outputIndex: -1,\n    // regular values\n    checkIndex: checkIndex,\n    flags: flags,\n    childFlags: 0,\n    directChildFlags: 0,\n    childMatchedQueries: 0,\n    matchedQueries: matchedQueries,\n    matchedQueryIds: matchedQueryIds,\n    references: references,\n    ngContentIndex: ngContentIndex,\n    childCount: childCount,\n    bindings: bindingDefs,\n    bindingFlags: calcBindingFlags(bindingDefs),\n    outputs: outputDefs,\n    element: {\n      ns: ns,\n      name: name,\n      attrs: attrs,\n      template: null,\n      // will bet set by the view definition\n      componentProvider: null,\n      componentView: componentView || null,\n      componentRendererType: componentRendererType,\n      publicProviders: null,\n      allProviders: null,\n      handleEvent: handleEvent || NOOP\n    },\n    provider: null,\n    text: null,\n    query: null,\n    ngContent: null\n  };\n}\n\nfunction createElement(view, renderHost, def) {\n  var elDef = def.element;\n  var rootSelectorOrNode = view.root.selectorOrNode;\n  var renderer = view.renderer;\n  var el;\n\n  if (view.parent || !rootSelectorOrNode) {\n    if (elDef.name) {\n      el = renderer.createElement(elDef.name, elDef.ns);\n    } else {\n      el = renderer.createComment('');\n    }\n\n    var parentEl = getParentRenderElement(view, renderHost, def);\n\n    if (parentEl) {\n      renderer.appendChild(parentEl, el);\n    }\n  } else {\n    // when using native Shadow DOM, do not clear the root element contents to allow slot projection\n    var preserveContent = !!elDef.componentRendererType && elDef.componentRendererType.encapsulation === ViewEncapsulation$1.ShadowDom;\n    el = renderer.selectRootElement(rootSelectorOrNode, preserveContent);\n  }\n\n  if (elDef.attrs) {\n    for (var i = 0; i < elDef.attrs.length; i++) {\n      var _elDef$attrs$i = _slicedToArray(elDef.attrs[i], 3),\n          ns = _elDef$attrs$i[0],\n          name = _elDef$attrs$i[1],\n          value = _elDef$attrs$i[2];\n\n      renderer.setAttribute(el, name, value, ns);\n    }\n  }\n\n  return el;\n}\n\nfunction listenToElementOutputs(view, compView, def, el) {\n  for (var i = 0; i < def.outputs.length; i++) {\n    var output = def.outputs[i];\n    var handleEventClosure = renderEventHandlerClosure(view, def.nodeIndex, elementEventFullName(output.target, output.eventName));\n    var listenTarget = output.target;\n    var listenerView = view;\n\n    if (output.target === 'component') {\n      listenTarget = null;\n      listenerView = compView;\n    }\n\n    var disposable = listenerView.renderer.listen(listenTarget || el, output.eventName, handleEventClosure);\n    view.disposables[def.outputIndex + i] = disposable;\n  }\n}\n\nfunction renderEventHandlerClosure(view, index, eventName) {\n  return function (event) {\n    return dispatchEvent(view, index, eventName, event);\n  };\n}\n\nfunction checkAndUpdateElementInline(view, def, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9) {\n  var bindLen = def.bindings.length;\n  var changed = false;\n  if (bindLen > 0 && checkAndUpdateElementValue(view, def, 0, v0)) changed = true;\n  if (bindLen > 1 && checkAndUpdateElementValue(view, def, 1, v1)) changed = true;\n  if (bindLen > 2 && checkAndUpdateElementValue(view, def, 2, v2)) changed = true;\n  if (bindLen > 3 && checkAndUpdateElementValue(view, def, 3, v3)) changed = true;\n  if (bindLen > 4 && checkAndUpdateElementValue(view, def, 4, v4)) changed = true;\n  if (bindLen > 5 && checkAndUpdateElementValue(view, def, 5, v5)) changed = true;\n  if (bindLen > 6 && checkAndUpdateElementValue(view, def, 6, v6)) changed = true;\n  if (bindLen > 7 && checkAndUpdateElementValue(view, def, 7, v7)) changed = true;\n  if (bindLen > 8 && checkAndUpdateElementValue(view, def, 8, v8)) changed = true;\n  if (bindLen > 9 && checkAndUpdateElementValue(view, def, 9, v9)) changed = true;\n  return changed;\n}\n\nfunction checkAndUpdateElementDynamic(view, def, values) {\n  var changed = false;\n\n  for (var i = 0; i < values.length; i++) {\n    if (checkAndUpdateElementValue(view, def, i, values[i])) changed = true;\n  }\n\n  return changed;\n}\n\nfunction checkAndUpdateElementValue(view, def, bindingIdx, value) {\n  if (!checkAndUpdateBinding(view, def, bindingIdx, value)) {\n    return false;\n  }\n\n  var binding = def.bindings[bindingIdx];\n  var elData = asElementData(view, def.nodeIndex);\n  var renderNode = elData.renderElement;\n  var name = binding.name;\n\n  switch (binding.flags & 15\n  /* Types */\n  ) {\n    case 1\n    /* TypeElementAttribute */\n    :\n      setElementAttribute$1(view, binding, renderNode, binding.ns, name, value);\n      break;\n\n    case 2\n    /* TypeElementClass */\n    :\n      setElementClass(view, renderNode, name, value);\n      break;\n\n    case 4\n    /* TypeElementStyle */\n    :\n      setElementStyle(view, binding, renderNode, name, value);\n      break;\n\n    case 8\n    /* TypeProperty */\n    :\n      var bindView = def.flags & 33554432\n      /* ComponentView */\n      && binding.flags & 32\n      /* SyntheticHostProperty */\n      ? elData.componentView : view;\n      setElementProperty(bindView, binding, renderNode, name, value);\n      break;\n  }\n\n  return true;\n}\n\nfunction setElementAttribute$1(view, binding, renderNode, ns, name, value) {\n  var securityContext = binding.securityContext;\n  var renderValue = securityContext ? view.root.sanitizer.sanitize(securityContext, value) : value;\n  renderValue = renderValue != null ? renderValue.toString() : null;\n  var renderer = view.renderer;\n\n  if (value != null) {\n    renderer.setAttribute(renderNode, name, renderValue, ns);\n  } else {\n    renderer.removeAttribute(renderNode, name, ns);\n  }\n}\n\nfunction setElementClass(view, renderNode, name, value) {\n  var renderer = view.renderer;\n\n  if (value) {\n    renderer.addClass(renderNode, name);\n  } else {\n    renderer.removeClass(renderNode, name);\n  }\n}\n\nfunction setElementStyle(view, binding, renderNode, name, value) {\n  var renderValue = view.root.sanitizer.sanitize(SecurityContext.STYLE, value);\n\n  if (renderValue != null) {\n    renderValue = renderValue.toString();\n    var unit = binding.suffix;\n\n    if (unit != null) {\n      renderValue = renderValue + unit;\n    }\n  } else {\n    renderValue = null;\n  }\n\n  var renderer = view.renderer;\n\n  if (renderValue != null) {\n    renderer.setStyle(renderNode, name, renderValue);\n  } else {\n    renderer.removeStyle(renderNode, name);\n  }\n}\n\nfunction setElementProperty(view, binding, renderNode, name, value) {\n  var securityContext = binding.securityContext;\n  var renderValue = securityContext ? view.root.sanitizer.sanitize(securityContext, value) : value;\n  view.renderer.setProperty(renderNode, name, renderValue);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction queryDef(flags, id, bindings) {\n  var bindingDefs = [];\n\n  for (var propName in bindings) {\n    var bindingType = bindings[propName];\n    bindingDefs.push({\n      propName: propName,\n      bindingType: bindingType\n    });\n  }\n\n  return {\n    // will bet set by the view definition\n    nodeIndex: -1,\n    parent: null,\n    renderParent: null,\n    bindingIndex: -1,\n    outputIndex: -1,\n    // regular values\n    // TODO(vicb): check\n    checkIndex: -1,\n    flags: flags,\n    childFlags: 0,\n    directChildFlags: 0,\n    childMatchedQueries: 0,\n    ngContentIndex: -1,\n    matchedQueries: {},\n    matchedQueryIds: 0,\n    references: {},\n    childCount: 0,\n    bindings: [],\n    bindingFlags: 0,\n    outputs: [],\n    element: null,\n    provider: null,\n    text: null,\n    query: {\n      id: id,\n      filterId: filterQueryId(id),\n      bindings: bindingDefs\n    },\n    ngContent: null\n  };\n}\n\nfunction createQuery() {\n  return new QueryList();\n}\n\nfunction dirtyParentQueries(view) {\n  var queryIds = view.def.nodeMatchedQueries;\n\n  while (view.parent && isEmbeddedView(view)) {\n    var tplDef = view.parentNodeDef;\n    view = view.parent; // content queries\n\n    var end = tplDef.nodeIndex + tplDef.childCount;\n\n    for (var i = 0; i <= end; i++) {\n      var nodeDef = view.def.nodes[i];\n\n      if (nodeDef.flags & 67108864\n      /* TypeContentQuery */\n      && nodeDef.flags & 536870912\n      /* DynamicQuery */\n      && (nodeDef.query.filterId & queryIds) === nodeDef.query.filterId) {\n        asQueryList(view, i).setDirty();\n      }\n\n      if (nodeDef.flags & 1\n      /* TypeElement */\n      && i + nodeDef.childCount < tplDef.nodeIndex || !(nodeDef.childFlags & 67108864\n      /* TypeContentQuery */\n      ) || !(nodeDef.childFlags & 536870912\n      /* DynamicQuery */\n      )) {\n        // skip elements that don't contain the template element or no query.\n        i += nodeDef.childCount;\n      }\n    }\n  } // view queries\n\n\n  if (view.def.nodeFlags & 134217728\n  /* TypeViewQuery */\n  ) {\n    for (var _i11 = 0; _i11 < view.def.nodes.length; _i11++) {\n      var _nodeDef = view.def.nodes[_i11];\n\n      if (_nodeDef.flags & 134217728\n      /* TypeViewQuery */\n      && _nodeDef.flags & 536870912\n      /* DynamicQuery */\n      ) {\n        asQueryList(view, _i11).setDirty();\n      } // only visit the root nodes\n\n\n      _i11 += _nodeDef.childCount;\n    }\n  }\n}\n\nfunction checkAndUpdateQuery(view, nodeDef) {\n  var queryList = asQueryList(view, nodeDef.nodeIndex);\n\n  if (!queryList.dirty) {\n    return;\n  }\n\n  var directiveInstance;\n  var newValues = undefined;\n\n  if (nodeDef.flags & 67108864\n  /* TypeContentQuery */\n  ) {\n    var _elementDef = nodeDef.parent.parent;\n    newValues = calcQueryValues(view, _elementDef.nodeIndex, _elementDef.nodeIndex + _elementDef.childCount, nodeDef.query, []);\n    directiveInstance = asProviderData(view, nodeDef.parent.nodeIndex).instance;\n  } else if (nodeDef.flags & 134217728\n  /* TypeViewQuery */\n  ) {\n    newValues = calcQueryValues(view, 0, view.def.nodes.length - 1, nodeDef.query, []);\n    directiveInstance = view.component;\n  }\n\n  queryList.reset(newValues);\n  var bindings = nodeDef.query.bindings;\n  var notify = false;\n\n  for (var i = 0; i < bindings.length; i++) {\n    var binding = bindings[i];\n    var boundValue = void 0;\n\n    switch (binding.bindingType) {\n      case 0\n      /* First */\n      :\n        boundValue = queryList.first;\n        break;\n\n      case 1\n      /* All */\n      :\n        boundValue = queryList;\n        notify = true;\n        break;\n    }\n\n    directiveInstance[binding.propName] = boundValue;\n  }\n\n  if (notify) {\n    queryList.notifyOnChanges();\n  }\n}\n\nfunction calcQueryValues(view, startIndex, endIndex, queryDef, values) {\n  for (var i = startIndex; i <= endIndex; i++) {\n    var nodeDef = view.def.nodes[i];\n    var valueType = nodeDef.matchedQueries[queryDef.id];\n\n    if (valueType != null) {\n      values.push(getQueryValue(view, nodeDef, valueType));\n    }\n\n    if (nodeDef.flags & 1\n    /* TypeElement */\n    && nodeDef.element.template && (nodeDef.element.template.nodeMatchedQueries & queryDef.filterId) === queryDef.filterId) {\n      var elementData = asElementData(view, i); // check embedded views that were attached at the place of their template,\n      // but process child nodes first if some match the query (see issue #16568)\n\n      if ((nodeDef.childMatchedQueries & queryDef.filterId) === queryDef.filterId) {\n        calcQueryValues(view, i + 1, i + nodeDef.childCount, queryDef, values);\n        i += nodeDef.childCount;\n      }\n\n      if (nodeDef.flags & 16777216\n      /* EmbeddedViews */\n      ) {\n        var embeddedViews = elementData.viewContainer._embeddedViews;\n\n        for (var k = 0; k < embeddedViews.length; k++) {\n          var embeddedView = embeddedViews[k];\n          var dvc = declaredViewContainer(embeddedView);\n\n          if (dvc && dvc === elementData) {\n            calcQueryValues(embeddedView, 0, embeddedView.def.nodes.length - 1, queryDef, values);\n          }\n        }\n      }\n\n      var projectedViews = elementData.template._projectedViews;\n\n      if (projectedViews) {\n        for (var _k = 0; _k < projectedViews.length; _k++) {\n          var projectedView = projectedViews[_k];\n          calcQueryValues(projectedView, 0, projectedView.def.nodes.length - 1, queryDef, values);\n        }\n      }\n    }\n\n    if ((nodeDef.childMatchedQueries & queryDef.filterId) !== queryDef.filterId) {\n      // if no child matches the query, skip the children.\n      i += nodeDef.childCount;\n    }\n  }\n\n  return values;\n}\n\nfunction getQueryValue(view, nodeDef, queryValueType) {\n  if (queryValueType != null) {\n    // a match\n    switch (queryValueType) {\n      case 1\n      /* RenderElement */\n      :\n        return asElementData(view, nodeDef.nodeIndex).renderElement;\n\n      case 0\n      /* ElementRef */\n      :\n        return new ElementRef(asElementData(view, nodeDef.nodeIndex).renderElement);\n\n      case 2\n      /* TemplateRef */\n      :\n        return asElementData(view, nodeDef.nodeIndex).template;\n\n      case 3\n      /* ViewContainerRef */\n      :\n        return asElementData(view, nodeDef.nodeIndex).viewContainer;\n\n      case 4\n      /* Provider */\n      :\n        return asProviderData(view, nodeDef.nodeIndex).instance;\n    }\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction ngContentDef(ngContentIndex, index) {\n  return {\n    // will bet set by the view definition\n    nodeIndex: -1,\n    parent: null,\n    renderParent: null,\n    bindingIndex: -1,\n    outputIndex: -1,\n    // regular values\n    checkIndex: -1,\n    flags: 8\n    /* TypeNgContent */\n    ,\n    childFlags: 0,\n    directChildFlags: 0,\n    childMatchedQueries: 0,\n    matchedQueries: {},\n    matchedQueryIds: 0,\n    references: {},\n    ngContentIndex: ngContentIndex,\n    childCount: 0,\n    bindings: [],\n    bindingFlags: 0,\n    outputs: [],\n    element: null,\n    provider: null,\n    text: null,\n    query: null,\n    ngContent: {\n      index: index\n    }\n  };\n}\n\nfunction appendNgContent(view, renderHost, def) {\n  var parentEl = getParentRenderElement(view, renderHost, def);\n\n  if (!parentEl) {\n    // Nothing to do if there is no parent element.\n    return;\n  }\n\n  var ngContentIndex = def.ngContent.index;\n  visitProjectedRenderNodes(view, ngContentIndex, 1\n  /* AppendChild */\n  , parentEl, null, undefined);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction purePipeDef(checkIndex, argCount) {\n  // argCount + 1 to include the pipe as first arg\n  return _pureExpressionDef(128\n  /* TypePurePipe */\n  , checkIndex, newArray(argCount + 1));\n}\n\nfunction pureArrayDef(checkIndex, argCount) {\n  return _pureExpressionDef(32\n  /* TypePureArray */\n  , checkIndex, newArray(argCount));\n}\n\nfunction pureObjectDef(checkIndex, propToIndex) {\n  var keys = Object.keys(propToIndex);\n  var nbKeys = keys.length;\n  var propertyNames = [];\n\n  for (var i = 0; i < nbKeys; i++) {\n    var key = keys[i];\n    var index = propToIndex[key];\n    propertyNames.push(key);\n  }\n\n  return _pureExpressionDef(64\n  /* TypePureObject */\n  , checkIndex, propertyNames);\n}\n\nfunction _pureExpressionDef(flags, checkIndex, propertyNames) {\n  var bindings = [];\n\n  for (var i = 0; i < propertyNames.length; i++) {\n    var prop = propertyNames[i];\n    bindings.push({\n      flags: 8\n      /* TypeProperty */\n      ,\n      name: prop,\n      ns: null,\n      nonMinifiedName: prop,\n      securityContext: null,\n      suffix: null\n    });\n  }\n\n  return {\n    // will bet set by the view definition\n    nodeIndex: -1,\n    parent: null,\n    renderParent: null,\n    bindingIndex: -1,\n    outputIndex: -1,\n    // regular values\n    checkIndex: checkIndex,\n    flags: flags,\n    childFlags: 0,\n    directChildFlags: 0,\n    childMatchedQueries: 0,\n    matchedQueries: {},\n    matchedQueryIds: 0,\n    references: {},\n    ngContentIndex: -1,\n    childCount: 0,\n    bindings: bindings,\n    bindingFlags: calcBindingFlags(bindings),\n    outputs: [],\n    element: null,\n    provider: null,\n    text: null,\n    query: null,\n    ngContent: null\n  };\n}\n\nfunction createPureExpression(view, def) {\n  return {\n    value: undefined\n  };\n}\n\nfunction checkAndUpdatePureExpressionInline(view, def, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9) {\n  var bindings = def.bindings;\n  var changed = false;\n  var bindLen = bindings.length;\n  if (bindLen > 0 && checkAndUpdateBinding(view, def, 0, v0)) changed = true;\n  if (bindLen > 1 && checkAndUpdateBinding(view, def, 1, v1)) changed = true;\n  if (bindLen > 2 && checkAndUpdateBinding(view, def, 2, v2)) changed = true;\n  if (bindLen > 3 && checkAndUpdateBinding(view, def, 3, v3)) changed = true;\n  if (bindLen > 4 && checkAndUpdateBinding(view, def, 4, v4)) changed = true;\n  if (bindLen > 5 && checkAndUpdateBinding(view, def, 5, v5)) changed = true;\n  if (bindLen > 6 && checkAndUpdateBinding(view, def, 6, v6)) changed = true;\n  if (bindLen > 7 && checkAndUpdateBinding(view, def, 7, v7)) changed = true;\n  if (bindLen > 8 && checkAndUpdateBinding(view, def, 8, v8)) changed = true;\n  if (bindLen > 9 && checkAndUpdateBinding(view, def, 9, v9)) changed = true;\n\n  if (changed) {\n    var data = asPureExpressionData(view, def.nodeIndex);\n    var value;\n\n    switch (def.flags & 201347067\n    /* Types */\n    ) {\n      case 32\n      /* TypePureArray */\n      :\n        value = [];\n        if (bindLen > 0) value.push(v0);\n        if (bindLen > 1) value.push(v1);\n        if (bindLen > 2) value.push(v2);\n        if (bindLen > 3) value.push(v3);\n        if (bindLen > 4) value.push(v4);\n        if (bindLen > 5) value.push(v5);\n        if (bindLen > 6) value.push(v6);\n        if (bindLen > 7) value.push(v7);\n        if (bindLen > 8) value.push(v8);\n        if (bindLen > 9) value.push(v9);\n        break;\n\n      case 64\n      /* TypePureObject */\n      :\n        value = {};\n        if (bindLen > 0) value[bindings[0].name] = v0;\n        if (bindLen > 1) value[bindings[1].name] = v1;\n        if (bindLen > 2) value[bindings[2].name] = v2;\n        if (bindLen > 3) value[bindings[3].name] = v3;\n        if (bindLen > 4) value[bindings[4].name] = v4;\n        if (bindLen > 5) value[bindings[5].name] = v5;\n        if (bindLen > 6) value[bindings[6].name] = v6;\n        if (bindLen > 7) value[bindings[7].name] = v7;\n        if (bindLen > 8) value[bindings[8].name] = v8;\n        if (bindLen > 9) value[bindings[9].name] = v9;\n        break;\n\n      case 128\n      /* TypePurePipe */\n      :\n        var pipe = v0;\n\n        switch (bindLen) {\n          case 1:\n            value = pipe.transform(v0);\n            break;\n\n          case 2:\n            value = pipe.transform(v1);\n            break;\n\n          case 3:\n            value = pipe.transform(v1, v2);\n            break;\n\n          case 4:\n            value = pipe.transform(v1, v2, v3);\n            break;\n\n          case 5:\n            value = pipe.transform(v1, v2, v3, v4);\n            break;\n\n          case 6:\n            value = pipe.transform(v1, v2, v3, v4, v5);\n            break;\n\n          case 7:\n            value = pipe.transform(v1, v2, v3, v4, v5, v6);\n            break;\n\n          case 8:\n            value = pipe.transform(v1, v2, v3, v4, v5, v6, v7);\n            break;\n\n          case 9:\n            value = pipe.transform(v1, v2, v3, v4, v5, v6, v7, v8);\n            break;\n\n          case 10:\n            value = pipe.transform(v1, v2, v3, v4, v5, v6, v7, v8, v9);\n            break;\n        }\n\n        break;\n    }\n\n    data.value = value;\n  }\n\n  return changed;\n}\n\nfunction checkAndUpdatePureExpressionDynamic(view, def, values) {\n  var bindings = def.bindings;\n  var changed = false;\n\n  for (var i = 0; i < values.length; i++) {\n    // Note: We need to loop over all values, so that\n    // the old values are updates as well!\n    if (checkAndUpdateBinding(view, def, i, values[i])) {\n      changed = true;\n    }\n  }\n\n  if (changed) {\n    var data = asPureExpressionData(view, def.nodeIndex);\n    var value;\n\n    switch (def.flags & 201347067\n    /* Types */\n    ) {\n      case 32\n      /* TypePureArray */\n      :\n        value = values;\n        break;\n\n      case 64\n      /* TypePureObject */\n      :\n        value = {};\n\n        for (var _i12 = 0; _i12 < values.length; _i12++) {\n          value[bindings[_i12].name] = values[_i12];\n        }\n\n        break;\n\n      case 128\n      /* TypePurePipe */\n      :\n        var pipe = values[0];\n        var params = values.slice(1);\n        value = pipe.transform.apply(pipe, _toConsumableArray(params));\n        break;\n    }\n\n    data.value = value;\n  }\n\n  return changed;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction textDef(checkIndex, ngContentIndex, staticText) {\n  var bindings = [];\n\n  for (var i = 1; i < staticText.length; i++) {\n    bindings[i - 1] = {\n      flags: 8\n      /* TypeProperty */\n      ,\n      name: null,\n      ns: null,\n      nonMinifiedName: null,\n      securityContext: null,\n      suffix: staticText[i]\n    };\n  }\n\n  return {\n    // will bet set by the view definition\n    nodeIndex: -1,\n    parent: null,\n    renderParent: null,\n    bindingIndex: -1,\n    outputIndex: -1,\n    // regular values\n    checkIndex: checkIndex,\n    flags: 2\n    /* TypeText */\n    ,\n    childFlags: 0,\n    directChildFlags: 0,\n    childMatchedQueries: 0,\n    matchedQueries: {},\n    matchedQueryIds: 0,\n    references: {},\n    ngContentIndex: ngContentIndex,\n    childCount: 0,\n    bindings: bindings,\n    bindingFlags: 8\n    /* TypeProperty */\n    ,\n    outputs: [],\n    element: null,\n    provider: null,\n    text: {\n      prefix: staticText[0]\n    },\n    query: null,\n    ngContent: null\n  };\n}\n\nfunction createText(view, renderHost, def) {\n  var renderNode;\n  var renderer = view.renderer;\n  renderNode = renderer.createText(def.text.prefix);\n  var parentEl = getParentRenderElement(view, renderHost, def);\n\n  if (parentEl) {\n    renderer.appendChild(parentEl, renderNode);\n  }\n\n  return {\n    renderText: renderNode\n  };\n}\n\nfunction checkAndUpdateTextInline(view, def, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9) {\n  var changed = false;\n  var bindings = def.bindings;\n  var bindLen = bindings.length;\n  if (bindLen > 0 && checkAndUpdateBinding(view, def, 0, v0)) changed = true;\n  if (bindLen > 1 && checkAndUpdateBinding(view, def, 1, v1)) changed = true;\n  if (bindLen > 2 && checkAndUpdateBinding(view, def, 2, v2)) changed = true;\n  if (bindLen > 3 && checkAndUpdateBinding(view, def, 3, v3)) changed = true;\n  if (bindLen > 4 && checkAndUpdateBinding(view, def, 4, v4)) changed = true;\n  if (bindLen > 5 && checkAndUpdateBinding(view, def, 5, v5)) changed = true;\n  if (bindLen > 6 && checkAndUpdateBinding(view, def, 6, v6)) changed = true;\n  if (bindLen > 7 && checkAndUpdateBinding(view, def, 7, v7)) changed = true;\n  if (bindLen > 8 && checkAndUpdateBinding(view, def, 8, v8)) changed = true;\n  if (bindLen > 9 && checkAndUpdateBinding(view, def, 9, v9)) changed = true;\n\n  if (changed) {\n    var value = def.text.prefix;\n    if (bindLen > 0) value += _addInterpolationPart(v0, bindings[0]);\n    if (bindLen > 1) value += _addInterpolationPart(v1, bindings[1]);\n    if (bindLen > 2) value += _addInterpolationPart(v2, bindings[2]);\n    if (bindLen > 3) value += _addInterpolationPart(v3, bindings[3]);\n    if (bindLen > 4) value += _addInterpolationPart(v4, bindings[4]);\n    if (bindLen > 5) value += _addInterpolationPart(v5, bindings[5]);\n    if (bindLen > 6) value += _addInterpolationPart(v6, bindings[6]);\n    if (bindLen > 7) value += _addInterpolationPart(v7, bindings[7]);\n    if (bindLen > 8) value += _addInterpolationPart(v8, bindings[8]);\n    if (bindLen > 9) value += _addInterpolationPart(v9, bindings[9]);\n    var _renderNode = asTextData(view, def.nodeIndex).renderText;\n    view.renderer.setValue(_renderNode, value);\n  }\n\n  return changed;\n}\n\nfunction checkAndUpdateTextDynamic(view, def, values) {\n  var bindings = def.bindings;\n  var changed = false;\n\n  for (var i = 0; i < values.length; i++) {\n    // Note: We need to loop over all values, so that\n    // the old values are updates as well!\n    if (checkAndUpdateBinding(view, def, i, values[i])) {\n      changed = true;\n    }\n  }\n\n  if (changed) {\n    var value = '';\n\n    for (var _i13 = 0; _i13 < values.length; _i13++) {\n      value = value + _addInterpolationPart(values[_i13], bindings[_i13]);\n    }\n\n    value = def.text.prefix + value;\n    var _renderNode2 = asTextData(view, def.nodeIndex).renderText;\n    view.renderer.setValue(_renderNode2, value);\n  }\n\n  return changed;\n}\n\nfunction _addInterpolationPart(value, binding) {\n  var valueStr = value != null ? value.toString() : '';\n  return valueStr + binding.suffix;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction viewDef(flags, nodes, updateDirectives, updateRenderer) {\n  // clone nodes and set auto calculated values\n  var viewBindingCount = 0;\n  var viewDisposableCount = 0;\n  var viewNodeFlags = 0;\n  var viewRootNodeFlags = 0;\n  var viewMatchedQueries = 0;\n  var currentParent = null;\n  var currentRenderParent = null;\n  var currentElementHasPublicProviders = false;\n  var currentElementHasPrivateProviders = false;\n  var lastRenderRootNode = null;\n\n  for (var i = 0; i < nodes.length; i++) {\n    var node = nodes[i];\n    node.nodeIndex = i;\n    node.parent = currentParent;\n    node.bindingIndex = viewBindingCount;\n    node.outputIndex = viewDisposableCount;\n    node.renderParent = currentRenderParent;\n    viewNodeFlags |= node.flags;\n    viewMatchedQueries |= node.matchedQueryIds;\n\n    if (node.element) {\n      var elDef = node.element;\n      elDef.publicProviders = currentParent ? currentParent.element.publicProviders : Object.create(null);\n      elDef.allProviders = elDef.publicProviders; // Note: We assume that all providers of an element are before any child element!\n\n      currentElementHasPublicProviders = false;\n      currentElementHasPrivateProviders = false;\n\n      if (node.element.template) {\n        viewMatchedQueries |= node.element.template.nodeMatchedQueries;\n      }\n    }\n\n    validateNode(currentParent, node, nodes.length);\n    viewBindingCount += node.bindings.length;\n    viewDisposableCount += node.outputs.length;\n\n    if (!currentRenderParent && node.flags & 3\n    /* CatRenderNode */\n    ) {\n      lastRenderRootNode = node;\n    }\n\n    if (node.flags & 20224\n    /* CatProvider */\n    ) {\n      if (!currentElementHasPublicProviders) {\n        currentElementHasPublicProviders = true; // Use prototypical inheritance to not get O(n^2) complexity...\n\n        currentParent.element.publicProviders = Object.create(currentParent.element.publicProviders);\n        currentParent.element.allProviders = currentParent.element.publicProviders;\n      }\n\n      var isPrivateService = (node.flags & 8192\n      /* PrivateProvider */\n      ) !== 0;\n      var isComponent = (node.flags & 32768\n      /* Component */\n      ) !== 0;\n\n      if (!isPrivateService || isComponent) {\n        currentParent.element.publicProviders[tokenKey(node.provider.token)] = node;\n      } else {\n        if (!currentElementHasPrivateProviders) {\n          currentElementHasPrivateProviders = true; // Use prototypical inheritance to not get O(n^2) complexity...\n\n          currentParent.element.allProviders = Object.create(currentParent.element.publicProviders);\n        }\n\n        currentParent.element.allProviders[tokenKey(node.provider.token)] = node;\n      }\n\n      if (isComponent) {\n        currentParent.element.componentProvider = node;\n      }\n    }\n\n    if (currentParent) {\n      currentParent.childFlags |= node.flags;\n      currentParent.directChildFlags |= node.flags;\n      currentParent.childMatchedQueries |= node.matchedQueryIds;\n\n      if (node.element && node.element.template) {\n        currentParent.childMatchedQueries |= node.element.template.nodeMatchedQueries;\n      }\n    } else {\n      viewRootNodeFlags |= node.flags;\n    }\n\n    if (node.childCount > 0) {\n      currentParent = node;\n\n      if (!isNgContainer(node)) {\n        currentRenderParent = node;\n      }\n    } else {\n      // When the current node has no children, check if it is the last children of its parent.\n      // When it is, propagate the flags up.\n      // The loop is required because an element could be the last transitive children of several\n      // elements. We loop to either the root or the highest opened element (= with remaining\n      // children)\n      while (currentParent && i === currentParent.nodeIndex + currentParent.childCount) {\n        var newParent = currentParent.parent;\n\n        if (newParent) {\n          newParent.childFlags |= currentParent.childFlags;\n          newParent.childMatchedQueries |= currentParent.childMatchedQueries;\n        }\n\n        currentParent = newParent; // We also need to update the render parent & account for ng-container\n\n        if (currentParent && isNgContainer(currentParent)) {\n          currentRenderParent = currentParent.renderParent;\n        } else {\n          currentRenderParent = currentParent;\n        }\n      }\n    }\n  }\n\n  var handleEvent = function handleEvent(view, nodeIndex, eventName, event) {\n    return nodes[nodeIndex].element.handleEvent(view, eventName, event);\n  };\n\n  return {\n    // Will be filled later...\n    factory: null,\n    nodeFlags: viewNodeFlags,\n    rootNodeFlags: viewRootNodeFlags,\n    nodeMatchedQueries: viewMatchedQueries,\n    flags: flags,\n    nodes: nodes,\n    updateDirectives: updateDirectives || NOOP,\n    updateRenderer: updateRenderer || NOOP,\n    handleEvent: handleEvent,\n    bindingCount: viewBindingCount,\n    outputCount: viewDisposableCount,\n    lastRenderRootNode: lastRenderRootNode\n  };\n}\n\nfunction isNgContainer(node) {\n  return (node.flags & 1\n  /* TypeElement */\n  ) !== 0 && node.element.name === null;\n}\n\nfunction validateNode(parent, node, nodeCount) {\n  var template = node.element && node.element.template;\n\n  if (template) {\n    if (!template.lastRenderRootNode) {\n      throw new Error(\"Illegal State: Embedded templates without nodes are not allowed!\");\n    }\n\n    if (template.lastRenderRootNode && template.lastRenderRootNode.flags & 16777216\n    /* EmbeddedViews */\n    ) {\n      throw new Error(\"Illegal State: Last root node of a template can't have embedded views, at index \".concat(node.nodeIndex, \"!\"));\n    }\n  }\n\n  if (node.flags & 20224\n  /* CatProvider */\n  ) {\n    var parentFlags = parent ? parent.flags : 0;\n\n    if ((parentFlags & 1\n    /* TypeElement */\n    ) === 0) {\n      throw new Error(\"Illegal State: StaticProvider/Directive nodes need to be children of elements or anchors, at index \".concat(node.nodeIndex, \"!\"));\n    }\n  }\n\n  if (node.query) {\n    if (node.flags & 67108864\n    /* TypeContentQuery */\n    && (!parent || (parent.flags & 16384\n    /* TypeDirective */\n    ) === 0)) {\n      throw new Error(\"Illegal State: Content Query nodes need to be children of directives, at index \".concat(node.nodeIndex, \"!\"));\n    }\n\n    if (node.flags & 134217728\n    /* TypeViewQuery */\n    && parent) {\n      throw new Error(\"Illegal State: View Query nodes have to be top level nodes, at index \".concat(node.nodeIndex, \"!\"));\n    }\n  }\n\n  if (node.childCount) {\n    var parentEnd = parent ? parent.nodeIndex + parent.childCount : nodeCount - 1;\n\n    if (node.nodeIndex <= parentEnd && node.nodeIndex + node.childCount > parentEnd) {\n      throw new Error(\"Illegal State: childCount of node leads outside of parent, at index \".concat(node.nodeIndex, \"!\"));\n    }\n  }\n}\n\nfunction createEmbeddedView(parent, anchorDef, viewDef, context) {\n  // embedded views are seen as siblings to the anchor, so we need\n  // to get the parent of the anchor and use it as parentIndex.\n  var view = createView(parent.root, parent.renderer, parent, anchorDef, viewDef);\n  initView(view, parent.component, context);\n  createViewNodes(view);\n  return view;\n}\n\nfunction createRootView(root, def, context) {\n  var view = createView(root, root.renderer, null, null, def);\n  initView(view, context, context);\n  createViewNodes(view);\n  return view;\n}\n\nfunction createComponentView(parentView, nodeDef, viewDef, hostElement) {\n  var rendererType = nodeDef.element.componentRendererType;\n  var compRenderer;\n\n  if (!rendererType) {\n    compRenderer = parentView.root.renderer;\n  } else {\n    compRenderer = parentView.root.rendererFactory.createRenderer(hostElement, rendererType);\n  }\n\n  return createView(parentView.root, compRenderer, parentView, nodeDef.element.componentProvider, viewDef);\n}\n\nfunction createView(root, renderer, parent, parentNodeDef, def) {\n  var nodes = new Array(def.nodes.length);\n  var disposables = def.outputCount ? new Array(def.outputCount) : null;\n  var view = {\n    def: def,\n    parent: parent,\n    viewContainerParent: null,\n    parentNodeDef: parentNodeDef,\n    context: null,\n    component: null,\n    nodes: nodes,\n    state: 13\n    /* CatInit */\n    ,\n    root: root,\n    renderer: renderer,\n    oldValues: new Array(def.bindingCount),\n    disposables: disposables,\n    initIndex: -1\n  };\n  return view;\n}\n\nfunction initView(view, component, context) {\n  view.component = component;\n  view.context = context;\n}\n\nfunction createViewNodes(view) {\n  var renderHost;\n\n  if (isComponentView(view)) {\n    var hostDef = view.parentNodeDef;\n    renderHost = asElementData(view.parent, hostDef.parent.nodeIndex).renderElement;\n  }\n\n  var def = view.def;\n  var nodes = view.nodes;\n\n  for (var i = 0; i < def.nodes.length; i++) {\n    var nodeDef = def.nodes[i];\n    Services.setCurrentNode(view, i);\n    var nodeData = void 0;\n\n    switch (nodeDef.flags & 201347067\n    /* Types */\n    ) {\n      case 1\n      /* TypeElement */\n      :\n        var el = createElement(view, renderHost, nodeDef);\n        var componentView = undefined;\n\n        if (nodeDef.flags & 33554432\n        /* ComponentView */\n        ) {\n          var compViewDef = resolveDefinition(nodeDef.element.componentView);\n          componentView = Services.createComponentView(view, nodeDef, compViewDef, el);\n        }\n\n        listenToElementOutputs(view, componentView, nodeDef, el);\n        nodeData = {\n          renderElement: el,\n          componentView: componentView,\n          viewContainer: null,\n          template: nodeDef.element.template ? createTemplateData(view, nodeDef) : undefined\n        };\n\n        if (nodeDef.flags & 16777216\n        /* EmbeddedViews */\n        ) {\n          nodeData.viewContainer = createViewContainerData(view, nodeDef, nodeData);\n        }\n\n        break;\n\n      case 2\n      /* TypeText */\n      :\n        nodeData = createText(view, renderHost, nodeDef);\n        break;\n\n      case 512\n      /* TypeClassProvider */\n      :\n      case 1024\n      /* TypeFactoryProvider */\n      :\n      case 2048\n      /* TypeUseExistingProvider */\n      :\n      case 256\n      /* TypeValueProvider */\n      :\n        {\n          nodeData = nodes[i];\n\n          if (!nodeData && !(nodeDef.flags & 4096\n          /* LazyProvider */\n          )) {\n            var instance = createProviderInstance(view, nodeDef);\n            nodeData = {\n              instance: instance\n            };\n          }\n\n          break;\n        }\n\n      case 16\n      /* TypePipe */\n      :\n        {\n          var _instance = createPipeInstance(view, nodeDef);\n\n          nodeData = {\n            instance: _instance\n          };\n          break;\n        }\n\n      case 16384\n      /* TypeDirective */\n      :\n        {\n          nodeData = nodes[i];\n\n          if (!nodeData) {\n            var _instance2 = createDirectiveInstance(view, nodeDef);\n\n            nodeData = {\n              instance: _instance2\n            };\n          }\n\n          if (nodeDef.flags & 32768\n          /* Component */\n          ) {\n            var compView = asElementData(view, nodeDef.parent.nodeIndex).componentView;\n            initView(compView, nodeData.instance, nodeData.instance);\n          }\n\n          break;\n        }\n\n      case 32\n      /* TypePureArray */\n      :\n      case 64\n      /* TypePureObject */\n      :\n      case 128\n      /* TypePurePipe */\n      :\n        nodeData = createPureExpression(view, nodeDef);\n        break;\n\n      case 67108864\n      /* TypeContentQuery */\n      :\n      case 134217728\n      /* TypeViewQuery */\n      :\n        nodeData = createQuery();\n        break;\n\n      case 8\n      /* TypeNgContent */\n      :\n        appendNgContent(view, renderHost, nodeDef); // no runtime data needed for NgContent...\n\n        nodeData = undefined;\n        break;\n    }\n\n    nodes[i] = nodeData;\n  } // Create the ViewData.nodes of component views after we created everything else,\n  // so that e.g. ng-content works\n\n\n  execComponentViewsAction(view, ViewAction.CreateViewNodes); // fill static content and view queries\n\n  execQueriesAction(view, 67108864\n  /* TypeContentQuery */\n  | 134217728\n  /* TypeViewQuery */\n  , 268435456\n  /* StaticQuery */\n  , 0\n  /* CheckAndUpdate */\n  );\n}\n\nfunction checkNoChangesView(view) {\n  markProjectedViewsForCheck(view);\n  Services.updateDirectives(view, 1\n  /* CheckNoChanges */\n  );\n  execEmbeddedViewsAction(view, ViewAction.CheckNoChanges);\n  Services.updateRenderer(view, 1\n  /* CheckNoChanges */\n  );\n  execComponentViewsAction(view, ViewAction.CheckNoChanges); // Note: We don't check queries for changes as we didn't do this in v2.x.\n  // TODO(tbosch): investigate if we can enable the check again in v5.x with a nicer error message.\n\n  view.state &= ~(64\n  /* CheckProjectedViews */\n  | 32\n  /* CheckProjectedView */\n  );\n}\n\nfunction checkAndUpdateView(view) {\n  if (view.state & 1\n  /* BeforeFirstCheck */\n  ) {\n    view.state &= ~1\n    /* BeforeFirstCheck */\n    ;\n    view.state |= 2\n    /* FirstCheck */\n    ;\n  } else {\n    view.state &= ~2\n    /* FirstCheck */\n    ;\n  }\n\n  shiftInitState(view, 0\n  /* InitState_BeforeInit */\n  , 256\n  /* InitState_CallingOnInit */\n  );\n  markProjectedViewsForCheck(view);\n  Services.updateDirectives(view, 0\n  /* CheckAndUpdate */\n  );\n  execEmbeddedViewsAction(view, ViewAction.CheckAndUpdate);\n  execQueriesAction(view, 67108864\n  /* TypeContentQuery */\n  , 536870912\n  /* DynamicQuery */\n  , 0\n  /* CheckAndUpdate */\n  );\n  var callInit = shiftInitState(view, 256\n  /* InitState_CallingOnInit */\n  , 512\n  /* InitState_CallingAfterContentInit */\n  );\n  callLifecycleHooksChildrenFirst(view, 2097152\n  /* AfterContentChecked */\n  | (callInit ? 1048576\n  /* AfterContentInit */\n  : 0));\n  Services.updateRenderer(view, 0\n  /* CheckAndUpdate */\n  );\n  execComponentViewsAction(view, ViewAction.CheckAndUpdate);\n  execQueriesAction(view, 134217728\n  /* TypeViewQuery */\n  , 536870912\n  /* DynamicQuery */\n  , 0\n  /* CheckAndUpdate */\n  );\n  callInit = shiftInitState(view, 512\n  /* InitState_CallingAfterContentInit */\n  , 768\n  /* InitState_CallingAfterViewInit */\n  );\n  callLifecycleHooksChildrenFirst(view, 8388608\n  /* AfterViewChecked */\n  | (callInit ? 4194304\n  /* AfterViewInit */\n  : 0));\n\n  if (view.def.flags & 2\n  /* OnPush */\n  ) {\n    view.state &= ~8\n    /* ChecksEnabled */\n    ;\n  }\n\n  view.state &= ~(64\n  /* CheckProjectedViews */\n  | 32\n  /* CheckProjectedView */\n  );\n  shiftInitState(view, 768\n  /* InitState_CallingAfterViewInit */\n  , 1024\n  /* InitState_AfterInit */\n  );\n}\n\nfunction checkAndUpdateNode(view, nodeDef, argStyle, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9) {\n  if (argStyle === 0\n  /* Inline */\n  ) {\n    return checkAndUpdateNodeInline(view, nodeDef, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9);\n  } else {\n    return checkAndUpdateNodeDynamic(view, nodeDef, v0);\n  }\n}\n\nfunction markProjectedViewsForCheck(view) {\n  var def = view.def;\n\n  if (!(def.nodeFlags & 4\n  /* ProjectedTemplate */\n  )) {\n    return;\n  }\n\n  for (var i = 0; i < def.nodes.length; i++) {\n    var nodeDef = def.nodes[i];\n\n    if (nodeDef.flags & 4\n    /* ProjectedTemplate */\n    ) {\n      var projectedViews = asElementData(view, i).template._projectedViews;\n\n      if (projectedViews) {\n        for (var _i14 = 0; _i14 < projectedViews.length; _i14++) {\n          var projectedView = projectedViews[_i14];\n          projectedView.state |= 32\n          /* CheckProjectedView */\n          ;\n          markParentViewsForCheckProjectedViews(projectedView, view);\n        }\n      }\n    } else if ((nodeDef.childFlags & 4\n    /* ProjectedTemplate */\n    ) === 0) {\n      // a parent with leafs\n      // no child is a component,\n      // then skip the children\n      i += nodeDef.childCount;\n    }\n  }\n}\n\nfunction checkAndUpdateNodeInline(view, nodeDef, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9) {\n  switch (nodeDef.flags & 201347067\n  /* Types */\n  ) {\n    case 1\n    /* TypeElement */\n    :\n      return checkAndUpdateElementInline(view, nodeDef, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9);\n\n    case 2\n    /* TypeText */\n    :\n      return checkAndUpdateTextInline(view, nodeDef, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9);\n\n    case 16384\n    /* TypeDirective */\n    :\n      return checkAndUpdateDirectiveInline(view, nodeDef, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9);\n\n    case 32\n    /* TypePureArray */\n    :\n    case 64\n    /* TypePureObject */\n    :\n    case 128\n    /* TypePurePipe */\n    :\n      return checkAndUpdatePureExpressionInline(view, nodeDef, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9);\n\n    default:\n      throw 'unreachable';\n  }\n}\n\nfunction checkAndUpdateNodeDynamic(view, nodeDef, values) {\n  switch (nodeDef.flags & 201347067\n  /* Types */\n  ) {\n    case 1\n    /* TypeElement */\n    :\n      return checkAndUpdateElementDynamic(view, nodeDef, values);\n\n    case 2\n    /* TypeText */\n    :\n      return checkAndUpdateTextDynamic(view, nodeDef, values);\n\n    case 16384\n    /* TypeDirective */\n    :\n      return checkAndUpdateDirectiveDynamic(view, nodeDef, values);\n\n    case 32\n    /* TypePureArray */\n    :\n    case 64\n    /* TypePureObject */\n    :\n    case 128\n    /* TypePurePipe */\n    :\n      return checkAndUpdatePureExpressionDynamic(view, nodeDef, values);\n\n    default:\n      throw 'unreachable';\n  }\n}\n\nfunction checkNoChangesNode(view, nodeDef, argStyle, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9) {\n  if (argStyle === 0\n  /* Inline */\n  ) {\n    checkNoChangesNodeInline(view, nodeDef, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9);\n  } else {\n    checkNoChangesNodeDynamic(view, nodeDef, v0);\n  } // Returning false is ok here as we would have thrown in case of a change.\n\n\n  return false;\n}\n\nfunction checkNoChangesNodeInline(view, nodeDef, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9) {\n  var bindLen = nodeDef.bindings.length;\n  if (bindLen > 0) checkBindingNoChanges(view, nodeDef, 0, v0);\n  if (bindLen > 1) checkBindingNoChanges(view, nodeDef, 1, v1);\n  if (bindLen > 2) checkBindingNoChanges(view, nodeDef, 2, v2);\n  if (bindLen > 3) checkBindingNoChanges(view, nodeDef, 3, v3);\n  if (bindLen > 4) checkBindingNoChanges(view, nodeDef, 4, v4);\n  if (bindLen > 5) checkBindingNoChanges(view, nodeDef, 5, v5);\n  if (bindLen > 6) checkBindingNoChanges(view, nodeDef, 6, v6);\n  if (bindLen > 7) checkBindingNoChanges(view, nodeDef, 7, v7);\n  if (bindLen > 8) checkBindingNoChanges(view, nodeDef, 8, v8);\n  if (bindLen > 9) checkBindingNoChanges(view, nodeDef, 9, v9);\n}\n\nfunction checkNoChangesNodeDynamic(view, nodeDef, values) {\n  for (var i = 0; i < values.length; i++) {\n    checkBindingNoChanges(view, nodeDef, i, values[i]);\n  }\n}\n/**\n * Workaround https://github.com/angular/tsickle/issues/497\n * @suppress {misplacedTypeAnnotation}\n */\n\n\nfunction checkNoChangesQuery(view, nodeDef) {\n  var queryList = asQueryList(view, nodeDef.nodeIndex);\n\n  if (queryList.dirty) {\n    throw expressionChangedAfterItHasBeenCheckedError(Services.createDebugContext(view, nodeDef.nodeIndex), \"Query \".concat(nodeDef.query.id, \" not dirty\"), \"Query \".concat(nodeDef.query.id, \" dirty\"), (view.state & 1\n    /* BeforeFirstCheck */\n    ) !== 0);\n  }\n}\n\nfunction destroyView(view) {\n  if (view.state & 128\n  /* Destroyed */\n  ) {\n    return;\n  }\n\n  execEmbeddedViewsAction(view, ViewAction.Destroy);\n  execComponentViewsAction(view, ViewAction.Destroy);\n  callLifecycleHooksChildrenFirst(view, 131072\n  /* OnDestroy */\n  );\n\n  if (view.disposables) {\n    for (var i = 0; i < view.disposables.length; i++) {\n      view.disposables[i]();\n    }\n  }\n\n  detachProjectedView(view);\n\n  if (view.renderer.destroyNode) {\n    destroyViewNodes(view);\n  }\n\n  if (isComponentView(view)) {\n    view.renderer.destroy();\n  }\n\n  view.state |= 128\n  /* Destroyed */\n  ;\n}\n\nfunction destroyViewNodes(view) {\n  var len = view.def.nodes.length;\n\n  for (var i = 0; i < len; i++) {\n    var def = view.def.nodes[i];\n\n    if (def.flags & 1\n    /* TypeElement */\n    ) {\n      view.renderer.destroyNode(asElementData(view, i).renderElement);\n    } else if (def.flags & 2\n    /* TypeText */\n    ) {\n      view.renderer.destroyNode(asTextData(view, i).renderText);\n    } else if (def.flags & 67108864\n    /* TypeContentQuery */\n    || def.flags & 134217728\n    /* TypeViewQuery */\n    ) {\n      asQueryList(view, i).destroy();\n    }\n  }\n}\n\nvar ViewAction;\n\n(function (ViewAction) {\n  ViewAction[ViewAction[\"CreateViewNodes\"] = 0] = \"CreateViewNodes\";\n  ViewAction[ViewAction[\"CheckNoChanges\"] = 1] = \"CheckNoChanges\";\n  ViewAction[ViewAction[\"CheckNoChangesProjectedViews\"] = 2] = \"CheckNoChangesProjectedViews\";\n  ViewAction[ViewAction[\"CheckAndUpdate\"] = 3] = \"CheckAndUpdate\";\n  ViewAction[ViewAction[\"CheckAndUpdateProjectedViews\"] = 4] = \"CheckAndUpdateProjectedViews\";\n  ViewAction[ViewAction[\"Destroy\"] = 5] = \"Destroy\";\n})(ViewAction || (ViewAction = {}));\n\nfunction execComponentViewsAction(view, action) {\n  var def = view.def;\n\n  if (!(def.nodeFlags & 33554432\n  /* ComponentView */\n  )) {\n    return;\n  }\n\n  for (var i = 0; i < def.nodes.length; i++) {\n    var nodeDef = def.nodes[i];\n\n    if (nodeDef.flags & 33554432\n    /* ComponentView */\n    ) {\n      // a leaf\n      callViewAction(asElementData(view, i).componentView, action);\n    } else if ((nodeDef.childFlags & 33554432\n    /* ComponentView */\n    ) === 0) {\n      // a parent with leafs\n      // no child is a component,\n      // then skip the children\n      i += nodeDef.childCount;\n    }\n  }\n}\n\nfunction execEmbeddedViewsAction(view, action) {\n  var def = view.def;\n\n  if (!(def.nodeFlags & 16777216\n  /* EmbeddedViews */\n  )) {\n    return;\n  }\n\n  for (var i = 0; i < def.nodes.length; i++) {\n    var nodeDef = def.nodes[i];\n\n    if (nodeDef.flags & 16777216\n    /* EmbeddedViews */\n    ) {\n      // a leaf\n      var embeddedViews = asElementData(view, i).viewContainer._embeddedViews;\n\n      for (var k = 0; k < embeddedViews.length; k++) {\n        callViewAction(embeddedViews[k], action);\n      }\n    } else if ((nodeDef.childFlags & 16777216\n    /* EmbeddedViews */\n    ) === 0) {\n      // a parent with leafs\n      // no child is a component,\n      // then skip the children\n      i += nodeDef.childCount;\n    }\n  }\n}\n\nfunction callViewAction(view, action) {\n  var viewState = view.state;\n\n  switch (action) {\n    case ViewAction.CheckNoChanges:\n      if ((viewState & 128\n      /* Destroyed */\n      ) === 0) {\n        if ((viewState & 12\n        /* CatDetectChanges */\n        ) === 12\n        /* CatDetectChanges */\n        ) {\n          checkNoChangesView(view);\n        } else if (viewState & 64\n        /* CheckProjectedViews */\n        ) {\n          execProjectedViewsAction(view, ViewAction.CheckNoChangesProjectedViews);\n        }\n      }\n\n      break;\n\n    case ViewAction.CheckNoChangesProjectedViews:\n      if ((viewState & 128\n      /* Destroyed */\n      ) === 0) {\n        if (viewState & 32\n        /* CheckProjectedView */\n        ) {\n          checkNoChangesView(view);\n        } else if (viewState & 64\n        /* CheckProjectedViews */\n        ) {\n          execProjectedViewsAction(view, action);\n        }\n      }\n\n      break;\n\n    case ViewAction.CheckAndUpdate:\n      if ((viewState & 128\n      /* Destroyed */\n      ) === 0) {\n        if ((viewState & 12\n        /* CatDetectChanges */\n        ) === 12\n        /* CatDetectChanges */\n        ) {\n          checkAndUpdateView(view);\n        } else if (viewState & 64\n        /* CheckProjectedViews */\n        ) {\n          execProjectedViewsAction(view, ViewAction.CheckAndUpdateProjectedViews);\n        }\n      }\n\n      break;\n\n    case ViewAction.CheckAndUpdateProjectedViews:\n      if ((viewState & 128\n      /* Destroyed */\n      ) === 0) {\n        if (viewState & 32\n        /* CheckProjectedView */\n        ) {\n          checkAndUpdateView(view);\n        } else if (viewState & 64\n        /* CheckProjectedViews */\n        ) {\n          execProjectedViewsAction(view, action);\n        }\n      }\n\n      break;\n\n    case ViewAction.Destroy:\n      // Note: destroyView recurses over all views,\n      // so we don't need to special case projected views here.\n      destroyView(view);\n      break;\n\n    case ViewAction.CreateViewNodes:\n      createViewNodes(view);\n      break;\n  }\n}\n\nfunction execProjectedViewsAction(view, action) {\n  execEmbeddedViewsAction(view, action);\n  execComponentViewsAction(view, action);\n}\n\nfunction execQueriesAction(view, queryFlags, staticDynamicQueryFlag, checkType) {\n  if (!(view.def.nodeFlags & queryFlags) || !(view.def.nodeFlags & staticDynamicQueryFlag)) {\n    return;\n  }\n\n  var nodeCount = view.def.nodes.length;\n\n  for (var i = 0; i < nodeCount; i++) {\n    var nodeDef = view.def.nodes[i];\n\n    if (nodeDef.flags & queryFlags && nodeDef.flags & staticDynamicQueryFlag) {\n      Services.setCurrentNode(view, nodeDef.nodeIndex);\n\n      switch (checkType) {\n        case 0\n        /* CheckAndUpdate */\n        :\n          checkAndUpdateQuery(view, nodeDef);\n          break;\n\n        case 1\n        /* CheckNoChanges */\n        :\n          checkNoChangesQuery(view, nodeDef);\n          break;\n      }\n    }\n\n    if (!(nodeDef.childFlags & queryFlags) || !(nodeDef.childFlags & staticDynamicQueryFlag)) {\n      // no child has a matching query\n      // then skip the children\n      i += nodeDef.childCount;\n    }\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar initialized = false;\n\nfunction initServicesIfNeeded() {\n  if (initialized) {\n    return;\n  }\n\n  initialized = true;\n  var services = isDevMode() ? createDebugServices() : createProdServices();\n  Services.setCurrentNode = services.setCurrentNode;\n  Services.createRootView = services.createRootView;\n  Services.createEmbeddedView = services.createEmbeddedView;\n  Services.createComponentView = services.createComponentView;\n  Services.createNgModuleRef = services.createNgModuleRef;\n  Services.overrideProvider = services.overrideProvider;\n  Services.overrideComponentView = services.overrideComponentView;\n  Services.clearOverrides = services.clearOverrides;\n  Services.checkAndUpdateView = services.checkAndUpdateView;\n  Services.checkNoChangesView = services.checkNoChangesView;\n  Services.destroyView = services.destroyView;\n  Services.resolveDep = resolveDep;\n  Services.createDebugContext = services.createDebugContext;\n  Services.handleEvent = services.handleEvent;\n  Services.updateDirectives = services.updateDirectives;\n  Services.updateRenderer = services.updateRenderer;\n  Services.dirtyParentQueries = dirtyParentQueries;\n}\n\nfunction createProdServices() {\n  return {\n    setCurrentNode: function setCurrentNode() {},\n    createRootView: createProdRootView,\n    createEmbeddedView: createEmbeddedView,\n    createComponentView: createComponentView,\n    createNgModuleRef: createNgModuleRef,\n    overrideProvider: NOOP,\n    overrideComponentView: NOOP,\n    clearOverrides: NOOP,\n    checkAndUpdateView: checkAndUpdateView,\n    checkNoChangesView: checkNoChangesView,\n    destroyView: destroyView,\n    createDebugContext: function createDebugContext(view, nodeIndex) {\n      return new DebugContext_(view, nodeIndex);\n    },\n    handleEvent: function handleEvent(view, nodeIndex, eventName, event) {\n      return view.def.handleEvent(view, nodeIndex, eventName, event);\n    },\n    updateDirectives: function updateDirectives(view, checkType) {\n      return view.def.updateDirectives(checkType === 0\n      /* CheckAndUpdate */\n      ? prodCheckAndUpdateNode : prodCheckNoChangesNode, view);\n    },\n    updateRenderer: function updateRenderer(view, checkType) {\n      return view.def.updateRenderer(checkType === 0\n      /* CheckAndUpdate */\n      ? prodCheckAndUpdateNode : prodCheckNoChangesNode, view);\n    }\n  };\n}\n\nfunction createDebugServices() {\n  return {\n    setCurrentNode: debugSetCurrentNode,\n    createRootView: debugCreateRootView,\n    createEmbeddedView: debugCreateEmbeddedView,\n    createComponentView: debugCreateComponentView,\n    createNgModuleRef: debugCreateNgModuleRef,\n    overrideProvider: debugOverrideProvider,\n    overrideComponentView: debugOverrideComponentView,\n    clearOverrides: debugClearOverrides,\n    checkAndUpdateView: debugCheckAndUpdateView,\n    checkNoChangesView: debugCheckNoChangesView,\n    destroyView: debugDestroyView,\n    createDebugContext: function createDebugContext(view, nodeIndex) {\n      return new DebugContext_(view, nodeIndex);\n    },\n    handleEvent: debugHandleEvent,\n    updateDirectives: debugUpdateDirectives,\n    updateRenderer: debugUpdateRenderer\n  };\n}\n\nfunction createProdRootView(elInjector, projectableNodes, rootSelectorOrNode, def, ngModule, context) {\n  var rendererFactory = ngModule.injector.get(RendererFactory2);\n  return createRootView(createRootData(elInjector, ngModule, rendererFactory, projectableNodes, rootSelectorOrNode), def, context);\n}\n\nfunction debugCreateRootView(elInjector, projectableNodes, rootSelectorOrNode, def, ngModule, context) {\n  var rendererFactory = ngModule.injector.get(RendererFactory2);\n  var root = createRootData(elInjector, ngModule, new DebugRendererFactory2(rendererFactory), projectableNodes, rootSelectorOrNode);\n  var defWithOverride = applyProviderOverridesToView(def);\n  return callWithDebugContext(DebugAction.create, createRootView, null, [root, defWithOverride, context]);\n}\n\nfunction createRootData(elInjector, ngModule, rendererFactory, projectableNodes, rootSelectorOrNode) {\n  var sanitizer = ngModule.injector.get(Sanitizer);\n  var errorHandler = ngModule.injector.get(ErrorHandler);\n  var renderer = rendererFactory.createRenderer(null, null);\n  return {\n    ngModule: ngModule,\n    injector: elInjector,\n    projectableNodes: projectableNodes,\n    selectorOrNode: rootSelectorOrNode,\n    sanitizer: sanitizer,\n    rendererFactory: rendererFactory,\n    renderer: renderer,\n    errorHandler: errorHandler\n  };\n}\n\nfunction debugCreateEmbeddedView(parentView, anchorDef, viewDef, context) {\n  var defWithOverride = applyProviderOverridesToView(viewDef);\n  return callWithDebugContext(DebugAction.create, createEmbeddedView, null, [parentView, anchorDef, defWithOverride, context]);\n}\n\nfunction debugCreateComponentView(parentView, nodeDef, viewDef, hostElement) {\n  var overrideComponentView = viewDefOverrides.get(nodeDef.element.componentProvider.provider.token);\n\n  if (overrideComponentView) {\n    viewDef = overrideComponentView;\n  } else {\n    viewDef = applyProviderOverridesToView(viewDef);\n  }\n\n  return callWithDebugContext(DebugAction.create, createComponentView, null, [parentView, nodeDef, viewDef, hostElement]);\n}\n\nfunction debugCreateNgModuleRef(moduleType, parentInjector, bootstrapComponents, def) {\n  var defWithOverride = applyProviderOverridesToNgModule(def);\n  return createNgModuleRef(moduleType, parentInjector, bootstrapComponents, defWithOverride);\n}\n\nvar providerOverrides = new Map();\nvar providerOverridesWithScope = new Map();\nvar viewDefOverrides = new Map();\n\nfunction debugOverrideProvider(override) {\n  providerOverrides.set(override.token, override);\n  var injectableDef;\n\n  if (typeof override.token === 'function' && (injectableDef = getInjectableDef(override.token)) && typeof injectableDef.providedIn === 'function') {\n    providerOverridesWithScope.set(override.token, override);\n  }\n}\n\nfunction debugOverrideComponentView(comp, compFactory) {\n  var hostViewDef = resolveDefinition(getComponentViewDefinitionFactory(compFactory));\n  var compViewDef = resolveDefinition(hostViewDef.nodes[0].element.componentView);\n  viewDefOverrides.set(comp, compViewDef);\n}\n\nfunction debugClearOverrides() {\n  providerOverrides.clear();\n  providerOverridesWithScope.clear();\n  viewDefOverrides.clear();\n} // Notes about the algorithm:\n// 1) Locate the providers of an element and check if one of them was overwritten\n// 2) Change the providers of that element\n//\n// We only create new datastructures if we need to, to keep perf impact\n// reasonable.\n\n\nfunction applyProviderOverridesToView(def) {\n  if (providerOverrides.size === 0) {\n    return def;\n  }\n\n  var elementIndicesWithOverwrittenProviders = findElementIndicesWithOverwrittenProviders(def);\n\n  if (elementIndicesWithOverwrittenProviders.length === 0) {\n    return def;\n  } // clone the whole view definition,\n  // as it maintains references between the nodes that are hard to update.\n\n\n  def = def.factory(function () {\n    return NOOP;\n  });\n\n  for (var i = 0; i < elementIndicesWithOverwrittenProviders.length; i++) {\n    applyProviderOverridesToElement(def, elementIndicesWithOverwrittenProviders[i]);\n  }\n\n  return def;\n\n  function findElementIndicesWithOverwrittenProviders(def) {\n    var elIndicesWithOverwrittenProviders = [];\n    var lastElementDef = null;\n\n    for (var _i15 = 0; _i15 < def.nodes.length; _i15++) {\n      var nodeDef = def.nodes[_i15];\n\n      if (nodeDef.flags & 1\n      /* TypeElement */\n      ) {\n        lastElementDef = nodeDef;\n      }\n\n      if (lastElementDef && nodeDef.flags & 3840\n      /* CatProviderNoDirective */\n      && providerOverrides.has(nodeDef.provider.token)) {\n        elIndicesWithOverwrittenProviders.push(lastElementDef.nodeIndex);\n        lastElementDef = null;\n      }\n    }\n\n    return elIndicesWithOverwrittenProviders;\n  }\n\n  function applyProviderOverridesToElement(viewDef, elIndex) {\n    for (var _i16 = elIndex + 1; _i16 < viewDef.nodes.length; _i16++) {\n      var nodeDef = viewDef.nodes[_i16];\n\n      if (nodeDef.flags & 1\n      /* TypeElement */\n      ) {\n        // stop at the next element\n        return;\n      }\n\n      if (nodeDef.flags & 3840\n      /* CatProviderNoDirective */\n      ) {\n        var provider = nodeDef.provider;\n        var override = providerOverrides.get(provider.token);\n\n        if (override) {\n          nodeDef.flags = nodeDef.flags & ~3840\n          /* CatProviderNoDirective */\n          | override.flags;\n          provider.deps = splitDepsDsl(override.deps);\n          provider.value = override.value;\n        }\n      }\n    }\n  }\n} // Notes about the algorithm:\n// We only create new datastructures if we need to, to keep perf impact\n// reasonable.\n\n\nfunction applyProviderOverridesToNgModule(def) {\n  var _calcHasOverrides = calcHasOverrides(def),\n      hasOverrides = _calcHasOverrides.hasOverrides,\n      hasDeprecatedOverrides = _calcHasOverrides.hasDeprecatedOverrides;\n\n  if (!hasOverrides) {\n    return def;\n  } // clone the whole view definition,\n  // as it maintains references between the nodes that are hard to update.\n\n\n  def = def.factory(function () {\n    return NOOP;\n  });\n  applyProviderOverrides(def);\n  return def;\n\n  function calcHasOverrides(def) {\n    var hasOverrides = false;\n    var hasDeprecatedOverrides = false;\n\n    if (providerOverrides.size === 0) {\n      return {\n        hasOverrides: hasOverrides,\n        hasDeprecatedOverrides: hasDeprecatedOverrides\n      };\n    }\n\n    def.providers.forEach(function (node) {\n      var override = providerOverrides.get(node.token);\n\n      if (node.flags & 3840\n      /* CatProviderNoDirective */\n      && override) {\n        hasOverrides = true;\n        hasDeprecatedOverrides = hasDeprecatedOverrides || override.deprecatedBehavior;\n      }\n    });\n    def.modules.forEach(function (module) {\n      providerOverridesWithScope.forEach(function (override, token) {\n        if (getInjectableDef(token).providedIn === module) {\n          hasOverrides = true;\n          hasDeprecatedOverrides = hasDeprecatedOverrides || override.deprecatedBehavior;\n        }\n      });\n    });\n    return {\n      hasOverrides: hasOverrides,\n      hasDeprecatedOverrides: hasDeprecatedOverrides\n    };\n  }\n\n  function applyProviderOverrides(def) {\n    for (var i = 0; i < def.providers.length; i++) {\n      var provider = def.providers[i];\n\n      if (hasDeprecatedOverrides) {\n        // We had a bug where me made\n        // all providers lazy. Keep this logic behind a flag\n        // for migrating existing users.\n        provider.flags |= 4096\n        /* LazyProvider */\n        ;\n      }\n\n      var override = providerOverrides.get(provider.token);\n\n      if (override) {\n        provider.flags = provider.flags & ~3840\n        /* CatProviderNoDirective */\n        | override.flags;\n        provider.deps = splitDepsDsl(override.deps);\n        provider.value = override.value;\n      }\n    }\n\n    if (providerOverridesWithScope.size > 0) {\n      var moduleSet = new Set(def.modules);\n      providerOverridesWithScope.forEach(function (override, token) {\n        if (moduleSet.has(getInjectableDef(token).providedIn)) {\n          var _provider = {\n            token: token,\n            flags: override.flags | (hasDeprecatedOverrides ? 4096\n            /* LazyProvider */\n            : 0\n            /* None */\n            ),\n            deps: splitDepsDsl(override.deps),\n            value: override.value,\n            index: def.providers.length\n          };\n          def.providers.push(_provider);\n          def.providersByKey[tokenKey(token)] = _provider;\n        }\n      });\n    }\n  }\n}\n\nfunction prodCheckAndUpdateNode(view, checkIndex, argStyle, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9) {\n  var nodeDef = view.def.nodes[checkIndex];\n  checkAndUpdateNode(view, nodeDef, argStyle, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9);\n  return nodeDef.flags & 224\n  /* CatPureExpression */\n  ? asPureExpressionData(view, checkIndex).value : undefined;\n}\n\nfunction prodCheckNoChangesNode(view, checkIndex, argStyle, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9) {\n  var nodeDef = view.def.nodes[checkIndex];\n  checkNoChangesNode(view, nodeDef, argStyle, v0, v1, v2, v3, v4, v5, v6, v7, v8, v9);\n  return nodeDef.flags & 224\n  /* CatPureExpression */\n  ? asPureExpressionData(view, checkIndex).value : undefined;\n}\n\nfunction debugCheckAndUpdateView(view) {\n  return callWithDebugContext(DebugAction.detectChanges, checkAndUpdateView, null, [view]);\n}\n\nfunction debugCheckNoChangesView(view) {\n  return callWithDebugContext(DebugAction.checkNoChanges, checkNoChangesView, null, [view]);\n}\n\nfunction debugDestroyView(view) {\n  return callWithDebugContext(DebugAction.destroy, destroyView, null, [view]);\n}\n\nvar DebugAction;\n\n(function (DebugAction) {\n  DebugAction[DebugAction[\"create\"] = 0] = \"create\";\n  DebugAction[DebugAction[\"detectChanges\"] = 1] = \"detectChanges\";\n  DebugAction[DebugAction[\"checkNoChanges\"] = 2] = \"checkNoChanges\";\n  DebugAction[DebugAction[\"destroy\"] = 3] = \"destroy\";\n  DebugAction[DebugAction[\"handleEvent\"] = 4] = \"handleEvent\";\n})(DebugAction || (DebugAction = {}));\n\nvar _currentAction;\n\nvar _currentView;\n\nvar _currentNodeIndex;\n\nfunction debugSetCurrentNode(view, nodeIndex) {\n  _currentView = view;\n  _currentNodeIndex = nodeIndex;\n}\n\nfunction debugHandleEvent(view, nodeIndex, eventName, event) {\n  debugSetCurrentNode(view, nodeIndex);\n  return callWithDebugContext(DebugAction.handleEvent, view.def.handleEvent, null, [view, nodeIndex, eventName, event]);\n}\n\nfunction debugUpdateDirectives(view, checkType) {\n  if (view.state & 128\n  /* Destroyed */\n  ) {\n    throw viewDestroyedError(DebugAction[_currentAction]);\n  }\n\n  debugSetCurrentNode(view, nextDirectiveWithBinding(view, 0));\n  return view.def.updateDirectives(debugCheckDirectivesFn, view);\n\n  function debugCheckDirectivesFn(view, nodeIndex, argStyle) {\n    var nodeDef = view.def.nodes[nodeIndex];\n\n    for (var _len11 = arguments.length, values = new Array(_len11 > 3 ? _len11 - 3 : 0), _key11 = 3; _key11 < _len11; _key11++) {\n      values[_key11 - 3] = arguments[_key11];\n    }\n\n    if (checkType === 0\n    /* CheckAndUpdate */\n    ) {\n      debugCheckAndUpdateNode(view, nodeDef, argStyle, values);\n    } else {\n      debugCheckNoChangesNode(view, nodeDef, argStyle, values);\n    }\n\n    if (nodeDef.flags & 16384\n    /* TypeDirective */\n    ) {\n      debugSetCurrentNode(view, nextDirectiveWithBinding(view, nodeIndex));\n    }\n\n    return nodeDef.flags & 224\n    /* CatPureExpression */\n    ? asPureExpressionData(view, nodeDef.nodeIndex).value : undefined;\n  }\n}\n\nfunction debugUpdateRenderer(view, checkType) {\n  if (view.state & 128\n  /* Destroyed */\n  ) {\n    throw viewDestroyedError(DebugAction[_currentAction]);\n  }\n\n  debugSetCurrentNode(view, nextRenderNodeWithBinding(view, 0));\n  return view.def.updateRenderer(debugCheckRenderNodeFn, view);\n\n  function debugCheckRenderNodeFn(view, nodeIndex, argStyle) {\n    var nodeDef = view.def.nodes[nodeIndex];\n\n    for (var _len12 = arguments.length, values = new Array(_len12 > 3 ? _len12 - 3 : 0), _key12 = 3; _key12 < _len12; _key12++) {\n      values[_key12 - 3] = arguments[_key12];\n    }\n\n    if (checkType === 0\n    /* CheckAndUpdate */\n    ) {\n      debugCheckAndUpdateNode(view, nodeDef, argStyle, values);\n    } else {\n      debugCheckNoChangesNode(view, nodeDef, argStyle, values);\n    }\n\n    if (nodeDef.flags & 3\n    /* CatRenderNode */\n    ) {\n      debugSetCurrentNode(view, nextRenderNodeWithBinding(view, nodeIndex));\n    }\n\n    return nodeDef.flags & 224\n    /* CatPureExpression */\n    ? asPureExpressionData(view, nodeDef.nodeIndex).value : undefined;\n  }\n}\n\nfunction debugCheckAndUpdateNode(view, nodeDef, argStyle, givenValues) {\n  var changed = checkAndUpdateNode.apply(void 0, [view, nodeDef, argStyle].concat(_toConsumableArray(givenValues)));\n\n  if (changed) {\n    var values = argStyle === 1\n    /* Dynamic */\n    ? givenValues[0] : givenValues;\n\n    if (nodeDef.flags & 16384\n    /* TypeDirective */\n    ) {\n      var bindingValues = {};\n\n      for (var i = 0; i < nodeDef.bindings.length; i++) {\n        var binding = nodeDef.bindings[i];\n        var value = values[i];\n\n        if (binding.flags & 8\n        /* TypeProperty */\n        ) {\n          bindingValues[normalizeDebugBindingName(binding.nonMinifiedName)] = normalizeDebugBindingValue(value);\n        }\n      }\n\n      var elDef = nodeDef.parent;\n      var el = asElementData(view, elDef.nodeIndex).renderElement;\n\n      if (!elDef.element.name) {\n        // a comment.\n        view.renderer.setValue(el, \"bindings=\".concat(JSON.stringify(bindingValues, null, 2)));\n      } else {\n        // a regular element.\n        for (var attr in bindingValues) {\n          var _value3 = bindingValues[attr];\n\n          if (_value3 != null) {\n            view.renderer.setAttribute(el, attr, _value3);\n          } else {\n            view.renderer.removeAttribute(el, attr);\n          }\n        }\n      }\n    }\n  }\n}\n\nfunction debugCheckNoChangesNode(view, nodeDef, argStyle, values) {\n  checkNoChangesNode.apply(void 0, [view, nodeDef, argStyle].concat(_toConsumableArray(values)));\n}\n\nfunction nextDirectiveWithBinding(view, nodeIndex) {\n  for (var i = nodeIndex; i < view.def.nodes.length; i++) {\n    var nodeDef = view.def.nodes[i];\n\n    if (nodeDef.flags & 16384\n    /* TypeDirective */\n    && nodeDef.bindings && nodeDef.bindings.length) {\n      return i;\n    }\n  }\n\n  return null;\n}\n\nfunction nextRenderNodeWithBinding(view, nodeIndex) {\n  for (var i = nodeIndex; i < view.def.nodes.length; i++) {\n    var nodeDef = view.def.nodes[i];\n\n    if (nodeDef.flags & 3\n    /* CatRenderNode */\n    && nodeDef.bindings && nodeDef.bindings.length) {\n      return i;\n    }\n  }\n\n  return null;\n}\n\nvar DebugContext_ = /*#__PURE__*/function () {\n  function DebugContext_(view, nodeIndex) {\n    _classCallCheck(this, DebugContext_);\n\n    this.view = view;\n    this.nodeIndex = nodeIndex;\n\n    if (nodeIndex == null) {\n      this.nodeIndex = nodeIndex = 0;\n    }\n\n    this.nodeDef = view.def.nodes[nodeIndex];\n    var elDef = this.nodeDef;\n    var elView = view;\n\n    while (elDef && (elDef.flags & 1\n    /* TypeElement */\n    ) === 0) {\n      elDef = elDef.parent;\n    }\n\n    if (!elDef) {\n      while (!elDef && elView) {\n        elDef = viewParentEl(elView);\n        elView = elView.parent;\n      }\n    }\n\n    this.elDef = elDef;\n    this.elView = elView;\n  }\n\n  _createClass2(DebugContext_, [{\n    key: \"elOrCompView\",\n    get: function get() {\n      // Has to be done lazily as we use the DebugContext also during creation of elements...\n      return asElementData(this.elView, this.elDef.nodeIndex).componentView || this.view;\n    }\n  }, {\n    key: \"injector\",\n    get: function get() {\n      return createInjector$1(this.elView, this.elDef);\n    }\n  }, {\n    key: \"component\",\n    get: function get() {\n      return this.elOrCompView.component;\n    }\n  }, {\n    key: \"context\",\n    get: function get() {\n      return this.elOrCompView.context;\n    }\n  }, {\n    key: \"providerTokens\",\n    get: function get() {\n      var tokens = [];\n\n      if (this.elDef) {\n        for (var i = this.elDef.nodeIndex + 1; i <= this.elDef.nodeIndex + this.elDef.childCount; i++) {\n          var childDef = this.elView.def.nodes[i];\n\n          if (childDef.flags & 20224\n          /* CatProvider */\n          ) {\n            tokens.push(childDef.provider.token);\n          }\n\n          i += childDef.childCount;\n        }\n      }\n\n      return tokens;\n    }\n  }, {\n    key: \"references\",\n    get: function get() {\n      var references = {};\n\n      if (this.elDef) {\n        collectReferences(this.elView, this.elDef, references);\n\n        for (var i = this.elDef.nodeIndex + 1; i <= this.elDef.nodeIndex + this.elDef.childCount; i++) {\n          var childDef = this.elView.def.nodes[i];\n\n          if (childDef.flags & 20224\n          /* CatProvider */\n          ) {\n            collectReferences(this.elView, childDef, references);\n          }\n\n          i += childDef.childCount;\n        }\n      }\n\n      return references;\n    }\n  }, {\n    key: \"componentRenderElement\",\n    get: function get() {\n      var elData = findHostElement(this.elOrCompView);\n      return elData ? elData.renderElement : undefined;\n    }\n  }, {\n    key: \"renderNode\",\n    get: function get() {\n      return this.nodeDef.flags & 2\n      /* TypeText */\n      ? renderNode(this.view, this.nodeDef) : renderNode(this.elView, this.elDef);\n    }\n  }, {\n    key: \"logError\",\n    value: function logError(console) {\n      for (var _len13 = arguments.length, values = new Array(_len13 > 1 ? _len13 - 1 : 0), _key13 = 1; _key13 < _len13; _key13++) {\n        values[_key13 - 1] = arguments[_key13];\n      }\n\n      var logViewDef;\n      var logNodeIndex;\n\n      if (this.nodeDef.flags & 2\n      /* TypeText */\n      ) {\n        logViewDef = this.view.def;\n        logNodeIndex = this.nodeDef.nodeIndex;\n      } else {\n        logViewDef = this.elView.def;\n        logNodeIndex = this.elDef.nodeIndex;\n      } // Note: we only generate a log function for text and element nodes\n      // to make the generated code as small as possible.\n\n\n      var renderNodeIndex = getRenderNodeIndex(logViewDef, logNodeIndex);\n      var currRenderNodeIndex = -1;\n\n      var nodeLogger = function nodeLogger() {\n        currRenderNodeIndex++;\n\n        if (currRenderNodeIndex === renderNodeIndex) {\n          var _console$error;\n\n          return (_console$error = console.error).bind.apply(_console$error, [console].concat(values));\n        } else {\n          return NOOP;\n        }\n      };\n\n      logViewDef.factory(nodeLogger);\n\n      if (currRenderNodeIndex < renderNodeIndex) {\n        console.error('Illegal state: the ViewDefinitionFactory did not call the logger!');\n        console.error.apply(console, values);\n      }\n    }\n  }]);\n\n  return DebugContext_;\n}();\n\nfunction getRenderNodeIndex(viewDef, nodeIndex) {\n  var renderNodeIndex = -1;\n\n  for (var i = 0; i <= nodeIndex; i++) {\n    var nodeDef = viewDef.nodes[i];\n\n    if (nodeDef.flags & 3\n    /* CatRenderNode */\n    ) {\n      renderNodeIndex++;\n    }\n  }\n\n  return renderNodeIndex;\n}\n\nfunction findHostElement(view) {\n  while (view && !isComponentView(view)) {\n    view = view.parent;\n  }\n\n  if (view.parent) {\n    return asElementData(view.parent, viewParentEl(view).nodeIndex);\n  }\n\n  return null;\n}\n\nfunction collectReferences(view, nodeDef, references) {\n  for (var refName in nodeDef.references) {\n    references[refName] = getQueryValue(view, nodeDef, nodeDef.references[refName]);\n  }\n}\n\nfunction callWithDebugContext(action, fn, self, args) {\n  var oldAction = _currentAction;\n  var oldView = _currentView;\n  var oldNodeIndex = _currentNodeIndex;\n\n  try {\n    _currentAction = action;\n    var result = fn.apply(self, args);\n    _currentView = oldView;\n    _currentNodeIndex = oldNodeIndex;\n    _currentAction = oldAction;\n    return result;\n  } catch (e) {\n    if (isViewDebugError(e) || !_currentView) {\n      throw e;\n    }\n\n    throw viewWrappedDebugError(e, getCurrentDebugContext());\n  }\n}\n\nfunction getCurrentDebugContext() {\n  return _currentView ? new DebugContext_(_currentView, _currentNodeIndex) : null;\n}\n\nvar DebugRendererFactory2 = /*#__PURE__*/function () {\n  function DebugRendererFactory2(delegate) {\n    _classCallCheck(this, DebugRendererFactory2);\n\n    this.delegate = delegate;\n  }\n\n  _createClass2(DebugRendererFactory2, [{\n    key: \"createRenderer\",\n    value: function createRenderer(element, renderData) {\n      return new DebugRenderer2(this.delegate.createRenderer(element, renderData));\n    }\n  }, {\n    key: \"begin\",\n    value: function begin() {\n      if (this.delegate.begin) {\n        this.delegate.begin();\n      }\n    }\n  }, {\n    key: \"end\",\n    value: function end() {\n      if (this.delegate.end) {\n        this.delegate.end();\n      }\n    }\n  }, {\n    key: \"whenRenderingDone\",\n    value: function whenRenderingDone() {\n      if (this.delegate.whenRenderingDone) {\n        return this.delegate.whenRenderingDone();\n      }\n\n      return Promise.resolve(null);\n    }\n  }]);\n\n  return DebugRendererFactory2;\n}();\n\nvar DebugRenderer2 = /*#__PURE__*/function () {\n  function DebugRenderer2(delegate) {\n    _classCallCheck(this, DebugRenderer2);\n\n    this.delegate = delegate;\n    /**\n     * Factory function used to create a `DebugContext` when a node is created.\n     *\n     * The `DebugContext` allows to retrieve information about the nodes that are useful in tests.\n     *\n     * The factory is configurable so that the `DebugRenderer2` could instantiate either a View Engine\n     * or a Render context.\n     */\n\n    this.debugContextFactory = getCurrentDebugContext;\n    this.data = this.delegate.data;\n  }\n\n  _createClass2(DebugRenderer2, [{\n    key: \"createDebugContext\",\n    value: function createDebugContext(nativeElement) {\n      return this.debugContextFactory(nativeElement);\n    }\n  }, {\n    key: \"destroyNode\",\n    value: function destroyNode(node) {\n      var debugNode = getDebugNode$1(node);\n      removeDebugNodeFromIndex(debugNode);\n\n      if (debugNode instanceof DebugNode__PRE_R3__) {\n        debugNode.listeners.length = 0;\n      }\n\n      if (this.delegate.destroyNode) {\n        this.delegate.destroyNode(node);\n      }\n    }\n  }, {\n    key: \"destroy\",\n    value: function destroy() {\n      this.delegate.destroy();\n    }\n  }, {\n    key: \"createElement\",\n    value: function createElement(name, namespace) {\n      var el = this.delegate.createElement(name, namespace);\n      var debugCtx = this.createDebugContext(el);\n\n      if (debugCtx) {\n        var debugEl = new DebugElement__PRE_R3__(el, null, debugCtx);\n        debugEl.name = name;\n        indexDebugNode(debugEl);\n      }\n\n      return el;\n    }\n  }, {\n    key: \"createComment\",\n    value: function createComment(value) {\n      var comment = this.delegate.createComment(value);\n      var debugCtx = this.createDebugContext(comment);\n\n      if (debugCtx) {\n        indexDebugNode(new DebugNode__PRE_R3__(comment, null, debugCtx));\n      }\n\n      return comment;\n    }\n  }, {\n    key: \"createText\",\n    value: function createText(value) {\n      var text = this.delegate.createText(value);\n      var debugCtx = this.createDebugContext(text);\n\n      if (debugCtx) {\n        indexDebugNode(new DebugNode__PRE_R3__(text, null, debugCtx));\n      }\n\n      return text;\n    }\n  }, {\n    key: \"appendChild\",\n    value: function appendChild(parent, newChild) {\n      var debugEl = getDebugNode$1(parent);\n      var debugChildEl = getDebugNode$1(newChild);\n\n      if (debugEl && debugChildEl && debugEl instanceof DebugElement__PRE_R3__) {\n        debugEl.addChild(debugChildEl);\n      }\n\n      this.delegate.appendChild(parent, newChild);\n    }\n  }, {\n    key: \"insertBefore\",\n    value: function insertBefore(parent, newChild, refChild, isMove) {\n      var debugEl = getDebugNode$1(parent);\n      var debugChildEl = getDebugNode$1(newChild);\n      var debugRefEl = getDebugNode$1(refChild);\n\n      if (debugEl && debugChildEl && debugEl instanceof DebugElement__PRE_R3__) {\n        debugEl.insertBefore(debugRefEl, debugChildEl);\n      }\n\n      this.delegate.insertBefore(parent, newChild, refChild, isMove);\n    }\n  }, {\n    key: \"removeChild\",\n    value: function removeChild(parent, oldChild) {\n      var debugEl = getDebugNode$1(parent);\n      var debugChildEl = getDebugNode$1(oldChild);\n\n      if (debugEl && debugChildEl && debugEl instanceof DebugElement__PRE_R3__) {\n        debugEl.removeChild(debugChildEl);\n      }\n\n      this.delegate.removeChild(parent, oldChild);\n    }\n  }, {\n    key: \"selectRootElement\",\n    value: function selectRootElement(selectorOrNode, preserveContent) {\n      var el = this.delegate.selectRootElement(selectorOrNode, preserveContent);\n      var debugCtx = getCurrentDebugContext();\n\n      if (debugCtx) {\n        indexDebugNode(new DebugElement__PRE_R3__(el, null, debugCtx));\n      }\n\n      return el;\n    }\n  }, {\n    key: \"setAttribute\",\n    value: function setAttribute(el, name, value, namespace) {\n      var debugEl = getDebugNode$1(el);\n\n      if (debugEl && debugEl instanceof DebugElement__PRE_R3__) {\n        var fullName = namespace ? namespace + ':' + name : name;\n        debugEl.attributes[fullName] = value;\n      }\n\n      this.delegate.setAttribute(el, name, value, namespace);\n    }\n  }, {\n    key: \"removeAttribute\",\n    value: function removeAttribute(el, name, namespace) {\n      var debugEl = getDebugNode$1(el);\n\n      if (debugEl && debugEl instanceof DebugElement__PRE_R3__) {\n        var fullName = namespace ? namespace + ':' + name : name;\n        debugEl.attributes[fullName] = null;\n      }\n\n      this.delegate.removeAttribute(el, name, namespace);\n    }\n  }, {\n    key: \"addClass\",\n    value: function addClass(el, name) {\n      var debugEl = getDebugNode$1(el);\n\n      if (debugEl && debugEl instanceof DebugElement__PRE_R3__) {\n        debugEl.classes[name] = true;\n      }\n\n      this.delegate.addClass(el, name);\n    }\n  }, {\n    key: \"removeClass\",\n    value: function removeClass(el, name) {\n      var debugEl = getDebugNode$1(el);\n\n      if (debugEl && debugEl instanceof DebugElement__PRE_R3__) {\n        debugEl.classes[name] = false;\n      }\n\n      this.delegate.removeClass(el, name);\n    }\n  }, {\n    key: \"setStyle\",\n    value: function setStyle(el, style, value, flags) {\n      var debugEl = getDebugNode$1(el);\n\n      if (debugEl && debugEl instanceof DebugElement__PRE_R3__) {\n        debugEl.styles[style] = value;\n      }\n\n      this.delegate.setStyle(el, style, value, flags);\n    }\n  }, {\n    key: \"removeStyle\",\n    value: function removeStyle(el, style, flags) {\n      var debugEl = getDebugNode$1(el);\n\n      if (debugEl && debugEl instanceof DebugElement__PRE_R3__) {\n        debugEl.styles[style] = null;\n      }\n\n      this.delegate.removeStyle(el, style, flags);\n    }\n  }, {\n    key: \"setProperty\",\n    value: function setProperty(el, name, value) {\n      var debugEl = getDebugNode$1(el);\n\n      if (debugEl && debugEl instanceof DebugElement__PRE_R3__) {\n        debugEl.properties[name] = value;\n      }\n\n      this.delegate.setProperty(el, name, value);\n    }\n  }, {\n    key: \"listen\",\n    value: function listen(target, eventName, callback) {\n      if (typeof target !== 'string') {\n        var debugEl = getDebugNode$1(target);\n\n        if (debugEl) {\n          debugEl.listeners.push(new DebugEventListener(eventName, callback));\n        }\n      }\n\n      return this.delegate.listen(target, eventName, callback);\n    }\n  }, {\n    key: \"parentNode\",\n    value: function parentNode(node) {\n      return this.delegate.parentNode(node);\n    }\n  }, {\n    key: \"nextSibling\",\n    value: function nextSibling(node) {\n      return this.delegate.nextSibling(node);\n    }\n  }, {\n    key: \"setValue\",\n    value: function setValue(node, value) {\n      return this.delegate.setValue(node, value);\n    }\n  }]);\n\n  return DebugRenderer2;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction overrideProvider(override) {\n  initServicesIfNeeded();\n  return Services.overrideProvider(override);\n}\n\nfunction overrideComponentView(comp, componentFactory) {\n  initServicesIfNeeded();\n  return Services.overrideComponentView(comp, componentFactory);\n}\n\nfunction clearOverrides() {\n  initServicesIfNeeded();\n  return Services.clearOverrides();\n} // Attention: this function is called as top level function.\n// Putting any logic in here will destroy closure tree shaking!\n\n\nfunction createNgModuleFactory(ngModuleType, bootstrapComponents, defFactory) {\n  return new NgModuleFactory_(ngModuleType, bootstrapComponents, defFactory);\n}\n\nfunction cloneNgModuleDefinition(def) {\n  var providers = Array.from(def.providers);\n  var modules = Array.from(def.modules);\n  var providersByKey = {};\n\n  for (var key in def.providersByKey) {\n    providersByKey[key] = def.providersByKey[key];\n  }\n\n  return {\n    factory: def.factory,\n    scope: def.scope,\n    providers: providers,\n    modules: modules,\n    providersByKey: providersByKey\n  };\n}\n\nvar NgModuleFactory_ = /*#__PURE__*/function (_NgModuleFactory2) {\n  _inherits(NgModuleFactory_, _NgModuleFactory2);\n\n  var _super24 = _createSuper(NgModuleFactory_);\n\n  function NgModuleFactory_(moduleType, _bootstrapComponents, _ngModuleDefFactory) {\n    var _this35;\n\n    _classCallCheck(this, NgModuleFactory_);\n\n    // Attention: this ctor is called as top level function.\n    // Putting any logic in here will destroy closure tree shaking!\n    _this35 = _super24.call(this);\n    _this35.moduleType = moduleType;\n    _this35._bootstrapComponents = _bootstrapComponents;\n    _this35._ngModuleDefFactory = _ngModuleDefFactory;\n    return _this35;\n  }\n\n  _createClass2(NgModuleFactory_, [{\n    key: \"create\",\n    value: function create(parentInjector) {\n      initServicesIfNeeded(); // Clone the NgModuleDefinition so that any tree shakeable provider definition\n      // added to this instance of the NgModuleRef doesn't affect the cached copy.\n      // See https://github.com/angular/angular/issues/25018.\n\n      var def = cloneNgModuleDefinition(resolveDefinition(this._ngModuleDefFactory));\n      return Services.createNgModuleRef(this.moduleType, parentInjector || Injector.NULL, this._bootstrapComponents, def);\n    }\n  }]);\n\n  return NgModuleFactory_;\n}(NgModuleFactory);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// clang-format on\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nif (typeof ngDevMode !== 'undefined' && ngDevMode) {\n  // This helper is to give a reasonable error message to people upgrading to v9 that have not yet\n  // installed `@angular/localize` in their app.\n  // tslint:disable-next-line: no-toplevel-property-access\n  _global.$localize = _global.$localize || function () {\n    throw new Error('It looks like your application or one of its dependencies is using i18n.\\n' + 'Angular 9 introduced a global `$localize()` function that needs to be loaded.\\n' + 'Please run `ng add @angular/localize` from the Angular CLI.\\n' + '(For non-CLI projects, add `import \\'@angular/localize/init\\';` to your `polyfills.ts` file.\\n' + 'For server-side rendering applications add the import to your `main.server.ts` file.)');\n  };\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// This file only reexports content of the `src` folder. Keep it that way.\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\n\nexport { ANALYZE_FOR_ENTRY_COMPONENTS, APP_BOOTSTRAP_LISTENER, APP_ID, APP_INITIALIZER, ApplicationInitStatus, ApplicationModule, ApplicationRef, Attribute, COMPILER_OPTIONS, CUSTOM_ELEMENTS_SCHEMA, ChangeDetectionStrategy, ChangeDetectorRef, Compiler, CompilerFactory, Component, ComponentFactory, ComponentFactoryResolver, ComponentRef, ContentChild, ContentChildren, DEFAULT_CURRENCY_CODE, DebugElement, DebugEventListener, DebugNode, DefaultIterableDiffer, Directive, ElementRef, EmbeddedViewRef, ErrorHandler, EventEmitter, Host, HostBinding, HostListener, INJECTOR$1 as INJECTOR, Inject, InjectFlags, Injectable, InjectionToken, Injector, Input, IterableDiffers, KeyValueDiffers, LOCALE_ID$1 as LOCALE_ID, MissingTranslationStrategy, ModuleWithComponentFactories, NO_ERRORS_SCHEMA, NgModule, NgModuleFactory, NgModuleFactoryLoader, NgModuleRef, NgProbeToken, NgZone, Optional, Output, PACKAGE_ROOT_URL, PLATFORM_ID, PLATFORM_INITIALIZER, Pipe, PlatformRef, Query, QueryList, ReflectiveInjector, ReflectiveKey, Renderer2, RendererFactory2, RendererStyleFlags2, ResolvedReflectiveFactory, Sanitizer, SecurityContext, Self, SimpleChange, SkipSelf, SystemJsNgModuleLoader, SystemJsNgModuleLoaderConfig, TRANSLATIONS, TRANSLATIONS_FORMAT, TemplateRef, Testability, TestabilityRegistry, Type, VERSION, Version, ViewChild, ViewChildren, ViewContainerRef, ViewEncapsulation$1 as ViewEncapsulation, ViewRef$1 as ViewRef, WrappedValue, asNativeElements, assertPlatform, createPlatform, createPlatformFactory, defineInjectable, destroyPlatform, enableProdMode, forwardRef, getDebugNode$1 as getDebugNode, getModuleFactory, getPlatform, inject, isDevMode, platformCore, resolveForwardRef, setTestabilityGetter, ɵ0, ɵ1, ALLOW_MULTIPLE_PLATFORMS as ɵALLOW_MULTIPLE_PLATFORMS, APP_ID_RANDOM_PROVIDER as ɵAPP_ID_RANDOM_PROVIDER, ChangeDetectorStatus as ɵChangeDetectorStatus, CodegenComponentFactoryResolver as ɵCodegenComponentFactoryResolver, Compiler_compileModuleAndAllComponentsAsync__POST_R3__ as ɵCompiler_compileModuleAndAllComponentsAsync__POST_R3__, Compiler_compileModuleAndAllComponentsSync__POST_R3__ as ɵCompiler_compileModuleAndAllComponentsSync__POST_R3__, Compiler_compileModuleAsync__POST_R3__ as ɵCompiler_compileModuleAsync__POST_R3__, Compiler_compileModuleSync__POST_R3__ as ɵCompiler_compileModuleSync__POST_R3__, ComponentFactory as ɵComponentFactory, Console as ɵConsole, DEFAULT_LOCALE_ID as ɵDEFAULT_LOCALE_ID, EMPTY_ARRAY$4 as ɵEMPTY_ARRAY, EMPTY_MAP as ɵEMPTY_MAP, INJECTOR_IMPL__POST_R3__ as ɵINJECTOR_IMPL__POST_R3__, INJECTOR_SCOPE as ɵINJECTOR_SCOPE, LifecycleHooksFeature as ɵLifecycleHooksFeature, LocaleDataIndex as ɵLocaleDataIndex, NG_COMP_DEF as ɵNG_COMP_DEF, NG_DIR_DEF as ɵNG_DIR_DEF, NG_ELEMENT_ID as ɵNG_ELEMENT_ID, NG_INJ_DEF as ɵNG_INJ_DEF, NG_MOD_DEF as ɵNG_MOD_DEF, NG_PIPE_DEF as ɵNG_PIPE_DEF, NG_PROV_DEF as ɵNG_PROV_DEF, NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR as ɵNOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR, NO_CHANGE as ɵNO_CHANGE, NgModuleFactory$1 as ɵNgModuleFactory, NoopNgZone as ɵNoopNgZone, ReflectionCapabilities as ɵReflectionCapabilities, ComponentFactory$1 as ɵRender3ComponentFactory, ComponentRef$1 as ɵRender3ComponentRef, NgModuleRef$1 as ɵRender3NgModuleRef, SWITCH_CHANGE_DETECTOR_REF_FACTORY__POST_R3__ as ɵSWITCH_CHANGE_DETECTOR_REF_FACTORY__POST_R3__, SWITCH_COMPILE_COMPONENT__POST_R3__ as ɵSWITCH_COMPILE_COMPONENT__POST_R3__, SWITCH_COMPILE_DIRECTIVE__POST_R3__ as ɵSWITCH_COMPILE_DIRECTIVE__POST_R3__, SWITCH_COMPILE_INJECTABLE__POST_R3__ as ɵSWITCH_COMPILE_INJECTABLE__POST_R3__, SWITCH_COMPILE_NGMODULE__POST_R3__ as ɵSWITCH_COMPILE_NGMODULE__POST_R3__, SWITCH_COMPILE_PIPE__POST_R3__ as ɵSWITCH_COMPILE_PIPE__POST_R3__, SWITCH_ELEMENT_REF_FACTORY__POST_R3__ as ɵSWITCH_ELEMENT_REF_FACTORY__POST_R3__, SWITCH_IVY_ENABLED__POST_R3__ as ɵSWITCH_IVY_ENABLED__POST_R3__, SWITCH_RENDERER2_FACTORY__POST_R3__ as ɵSWITCH_RENDERER2_FACTORY__POST_R3__, SWITCH_TEMPLATE_REF_FACTORY__POST_R3__ as ɵSWITCH_TEMPLATE_REF_FACTORY__POST_R3__, SWITCH_VIEW_CONTAINER_REF_FACTORY__POST_R3__ as ɵSWITCH_VIEW_CONTAINER_REF_FACTORY__POST_R3__, _sanitizeHtml as ɵ_sanitizeHtml, _sanitizeUrl as ɵ_sanitizeUrl, allowSanitizationBypassAndThrow as ɵallowSanitizationBypassAndThrow, anchorDef as ɵand, isForwardRef as ɵangular_packages_core_core_a, injectInjectorOnly as ɵangular_packages_core_core_b, DebugContext as ɵangular_packages_core_core_ba, NgOnChangesFeatureImpl as ɵangular_packages_core_core_bb, SCHEDULER as ɵangular_packages_core_core_bc, injectAttributeImpl as ɵangular_packages_core_core_bd, getLView as ɵangular_packages_core_core_be, getBindingRoot as ɵangular_packages_core_core_bf, nextContextImpl as ɵangular_packages_core_core_bg, pureFunction1Internal as ɵangular_packages_core_core_bi, pureFunction2Internal as ɵangular_packages_core_core_bj, pureFunction3Internal as ɵangular_packages_core_core_bk, pureFunction4Internal as ɵangular_packages_core_core_bl, pureFunctionVInternal as ɵangular_packages_core_core_bm, getUrlSanitizer as ɵangular_packages_core_core_bn, makeParamDecorator as ɵangular_packages_core_core_bo, makePropDecorator as ɵangular_packages_core_core_bp, getClosureSafeProperty as ɵangular_packages_core_core_bq, NullInjector as ɵangular_packages_core_core_br, getInjectImplementation as ɵangular_packages_core_core_bs, getNativeByTNode as ɵangular_packages_core_core_bu, getRootContext as ɵangular_packages_core_core_bw, i18nPostprocess as ɵangular_packages_core_core_bx, trustedHTMLFromString as ɵangular_packages_core_core_by, trustedScriptURLFromString as ɵangular_packages_core_core_bz, ReflectiveInjector_ as ɵangular_packages_core_core_c, trustedScriptFromString as ɵangular_packages_core_core_ca, ReflectiveDependency as ɵangular_packages_core_core_d, resolveReflectiveProviders as ɵangular_packages_core_core_e, _appIdRandomProviderFactory as ɵangular_packages_core_core_f, injectRenderer2 as ɵangular_packages_core_core_g, injectElementRef as ɵangular_packages_core_core_h, createElementRef as ɵangular_packages_core_core_i, getModuleFactory__PRE_R3__ as ɵangular_packages_core_core_j, injectTemplateRef as ɵangular_packages_core_core_k, createTemplateRef as ɵangular_packages_core_core_l, injectViewContainerRef as ɵangular_packages_core_core_m, DebugNode__PRE_R3__ as ɵangular_packages_core_core_n, DebugElement__PRE_R3__ as ɵangular_packages_core_core_o, getDebugNodeR2__PRE_R3__ as ɵangular_packages_core_core_p, injectChangeDetectorRef as ɵangular_packages_core_core_q, DefaultIterableDifferFactory as ɵangular_packages_core_core_r, DefaultKeyValueDifferFactory as ɵangular_packages_core_core_s, _iterableDiffersFactory as ɵangular_packages_core_core_t, _keyValueDiffersFactory as ɵangular_packages_core_core_u, _localeFactory as ɵangular_packages_core_core_v, APPLICATION_MODULE_PROVIDERS as ɵangular_packages_core_core_w, zoneSchedulerFactory as ɵangular_packages_core_core_x, USD_CURRENCY_CODE as ɵangular_packages_core_core_y, _def as ɵangular_packages_core_core_z, bypassSanitizationTrustHtml as ɵbypassSanitizationTrustHtml, bypassSanitizationTrustResourceUrl as ɵbypassSanitizationTrustResourceUrl, bypassSanitizationTrustScript as ɵbypassSanitizationTrustScript, bypassSanitizationTrustStyle as ɵbypassSanitizationTrustStyle, bypassSanitizationTrustUrl as ɵbypassSanitizationTrustUrl, createComponentFactory as ɵccf, clearOverrides as ɵclearOverrides, clearResolutionOfComponentResourcesQueue as ɵclearResolutionOfComponentResourcesQueue, createNgModuleFactory as ɵcmf, compileComponent as ɵcompileComponent, compileDirective as ɵcompileDirective, compileNgModule as ɵcompileNgModule, compileNgModuleDefs as ɵcompileNgModuleDefs, compileNgModuleFactory__POST_R3__ as ɵcompileNgModuleFactory__POST_R3__, compilePipe as ɵcompilePipe, createInjector as ɵcreateInjector, createRendererType2 as ɵcrt, defaultIterableDiffers as ɵdefaultIterableDiffers, defaultKeyValueDiffers as ɵdefaultKeyValueDiffers, detectChanges as ɵdetectChanges, devModeEqual as ɵdevModeEqual, directiveDef as ɵdid, elementDef as ɵeld, findLocaleData as ɵfindLocaleData, flushModuleScopingQueueAsMuchAsPossible as ɵflushModuleScopingQueueAsMuchAsPossible, getComponentViewDefinitionFactory as ɵgetComponentViewDefinitionFactory, getDebugNodeR2 as ɵgetDebugNodeR2, getDebugNode__POST_R3__ as ɵgetDebugNode__POST_R3__, getDirectives as ɵgetDirectives, getHostElement as ɵgetHostElement, getInjectableDef as ɵgetInjectableDef, getLContext as ɵgetLContext, getLocaleCurrencyCode as ɵgetLocaleCurrencyCode, getLocalePluralCase as ɵgetLocalePluralCase, getModuleFactory__POST_R3__ as ɵgetModuleFactory__POST_R3__, getSanitizationBypassType as ɵgetSanitizationBypassType, _global as ɵglobal, initServicesIfNeeded as ɵinitServicesIfNeeded, inlineInterpolate as ɵinlineInterpolate, interpolate as ɵinterpolate, isBoundToModule__POST_R3__ as ɵisBoundToModule__POST_R3__, isDefaultChangeDetectionStrategy as ɵisDefaultChangeDetectionStrategy, isListLikeIterable as ɵisListLikeIterable, isObservable as ɵisObservable, isPromise as ɵisPromise, ivyEnabled as ɵivyEnabled, makeDecorator as ɵmakeDecorator, markDirty as ɵmarkDirty, moduleDef as ɵmod, moduleProvideDef as ɵmpd, ngContentDef as ɵncd, noSideEffects as ɵnoSideEffects, nodeValue as ɵnov, overrideComponentView as ɵoverrideComponentView, overrideProvider as ɵoverrideProvider, pureArrayDef as ɵpad, patchComponentDefWithScope as ɵpatchComponentDefWithScope, pipeDef as ɵpid, pureObjectDef as ɵpod, purePipeDef as ɵppd, providerDef as ɵprd, publishDefaultGlobalUtils as ɵpublishDefaultGlobalUtils, publishGlobalUtil as ɵpublishGlobalUtil, queryDef as ɵqud, registerLocaleData as ɵregisterLocaleData, registerModuleFactory as ɵregisterModuleFactory, registerNgModuleType as ɵregisterNgModuleType, renderComponent$1 as ɵrenderComponent, resetCompiledComponents as ɵresetCompiledComponents, resetJitOptions as ɵresetJitOptions, resolveComponentResources as ɵresolveComponentResources, setClassMetadata as ɵsetClassMetadata, setCurrentInjector as ɵsetCurrentInjector, setDocument as ɵsetDocument, setLocaleId as ɵsetLocaleId, store as ɵstore, stringify as ɵstringify, textDef as ɵted, transitiveScopesFor as ɵtransitiveScopesFor, unregisterAllLocaleData as ɵunregisterLocaleData, unwrapValue as ɵunv, unwrapSafeValue as ɵunwrapSafeValue, viewDef as ɵvid, whenRendered as ɵwhenRendered, ɵɵCopyDefinitionFeature, ɵɵInheritDefinitionFeature, ɵɵNgOnChangesFeature, ɵɵProvidersFeature, ɵɵadvance, ɵɵattribute, ɵɵattributeInterpolate1, ɵɵattributeInterpolate2, ɵɵattributeInterpolate3, ɵɵattributeInterpolate4, ɵɵattributeInterpolate5, ɵɵattributeInterpolate6, ɵɵattributeInterpolate7, ɵɵattributeInterpolate8, ɵɵattributeInterpolateV, ɵɵclassMap, ɵɵclassMapInterpolate1, ɵɵclassMapInterpolate2, ɵɵclassMapInterpolate3, ɵɵclassMapInterpolate4, ɵɵclassMapInterpolate5, ɵɵclassMapInterpolate6, ɵɵclassMapInterpolate7, ɵɵclassMapInterpolate8, ɵɵclassMapInterpolateV, ɵɵclassProp, ɵɵcontentQuery, ɵɵdefineComponent, ɵɵdefineDirective, ɵɵdefineInjectable, ɵɵdefineInjector, ɵɵdefineNgModule, ɵɵdefinePipe, ɵɵdirectiveInject, ɵɵdisableBindings, ɵɵelement, ɵɵelementContainer, ɵɵelementContainerEnd, ɵɵelementContainerStart, ɵɵelementEnd, ɵɵelementStart, ɵɵenableBindings, ɵɵgetCurrentView, ɵɵgetFactoryOf, ɵɵgetInheritedFactory, ɵɵhostProperty, ɵɵi18n, ɵɵi18nApply, ɵɵi18nAttributes, ɵɵi18nEnd, ɵɵi18nExp, ɵɵi18nPostprocess, ɵɵi18nStart, ɵɵinject, ɵɵinjectAttribute, ɵɵinjectPipeChangeDetectorRef, ɵɵinvalidFactory, ɵɵinvalidFactoryDep, ɵɵlistener, ɵɵloadQuery, ɵɵnamespaceHTML, ɵɵnamespaceMathML, ɵɵnamespaceSVG, ɵɵnextContext, ɵɵpipe, ɵɵpipeBind1, ɵɵpipeBind2, ɵɵpipeBind3, ɵɵpipeBind4, ɵɵpipeBindV, ɵɵprojection, ɵɵprojectionDef, ɵɵproperty, ɵɵpropertyInterpolate, ɵɵpropertyInterpolate1, ɵɵpropertyInterpolate2, ɵɵpropertyInterpolate3, ɵɵpropertyInterpolate4, ɵɵpropertyInterpolate5, ɵɵpropertyInterpolate6, ɵɵpropertyInterpolate7, ɵɵpropertyInterpolate8, ɵɵpropertyInterpolateV, ɵɵpureFunction0, ɵɵpureFunction1, ɵɵpureFunction2, ɵɵpureFunction3, ɵɵpureFunction4, ɵɵpureFunction5, ɵɵpureFunction6, ɵɵpureFunction7, ɵɵpureFunction8, ɵɵpureFunctionV, ɵɵqueryRefresh, ɵɵreference, ɵɵresolveBody, ɵɵresolveDocument, ɵɵresolveWindow, ɵɵrestoreView, ɵɵsanitizeHtml, ɵɵsanitizeResourceUrl, ɵɵsanitizeScript, ɵɵsanitizeStyle, ɵɵsanitizeUrl, ɵɵsanitizeUrlOrResourceUrl, ɵɵsetComponentScope, ɵɵsetNgModuleScope, ɵɵstaticContentQuery, ɵɵstaticViewQuery, ɵɵstyleMap, ɵɵstyleMapInterpolate1, ɵɵstyleMapInterpolate2, ɵɵstyleMapInterpolate3, ɵɵstyleMapInterpolate4, ɵɵstyleMapInterpolate5, ɵɵstyleMapInterpolate6, ɵɵstyleMapInterpolate7, ɵɵstyleMapInterpolate8, ɵɵstyleMapInterpolateV, ɵɵstyleProp, ɵɵstylePropInterpolate1, ɵɵstylePropInterpolate2, ɵɵstylePropInterpolate3, ɵɵstylePropInterpolate4, ɵɵstylePropInterpolate5, ɵɵstylePropInterpolate6, ɵɵstylePropInterpolate7, ɵɵstylePropInterpolate8, ɵɵstylePropInterpolateV, ɵɵsyntheticHostListener, ɵɵsyntheticHostProperty, ɵɵtemplate, ɵɵtemplateRefExtractor, ɵɵtext, ɵɵtextInterpolate, ɵɵtextInterpolate1, ɵɵtextInterpolate2, ɵɵtextInterpolate3, ɵɵtextInterpolate4, ɵɵtextInterpolate5, ɵɵtextInterpolate6, ɵɵtextInterpolate7, ɵɵtextInterpolate8, ɵɵtextInterpolateV, ɵɵtrustConstantHtml, ɵɵtrustConstantResourceUrl, ɵɵtrustConstantScript, ɵɵviewQuery };","var _BoundPropertyMapping;\n\nfunction _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }\n\nfunction _toArray(arr) { return _arrayWithHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableRest(); }\n\nfunction _construct(Parent, args, Class) { if (_isNativeReflectConstruct()) { _construct = Reflect.construct; } else { _construct = function _construct(Parent, args, Class) { var a = [null]; a.push.apply(a, args); var Constructor = Function.bind.apply(Parent, a); var instance = new Constructor(); if (Class) _setPrototypeOf(instance, Class.prototype); return instance; }; } return _construct.apply(null, arguments); }\n\nfunction _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }\n\nfunction _nonIterableRest() { throw new TypeError(\"Invalid attempt to destructure non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\"); }\n\nfunction _iterableToArrayLimit(arr, i) { var _i = arr == null ? null : typeof Symbol !== \"undefined\" && arr[Symbol.iterator] || arr[\"@@iterator\"]; if (_i == null) return; var _arr = []; var _n = true; var _d = false; var _s, _e; try { for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i[\"return\"] != null) _i[\"return\"](); } finally { if (_d) throw _e; } } return _arr; }\n\nfunction _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }\n\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; return _typeof = \"function\" == typeof Symbol && \"symbol\" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && \"function\" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }, _typeof(obj); }\n\nfunction _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== \"undefined\" && o[Symbol.iterator] || o[\"@@iterator\"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === \"number\") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e2) { throw _e2; }, f: F }; } throw new TypeError(\"Invalid attempt to iterate non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\"); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e3) { didErr = true; err = _e3; }, f: function f() { try { if (!normalCompletion && it.return != null) it.return(); } finally { if (didErr) throw err; } } }; }\n\nfunction _get() { if (typeof Reflect !== \"undefined\" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(arguments.length < 3 ? target : receiver); } return desc.value; }; } return _get.apply(this, arguments); }\n\nfunction _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function\"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); Object.defineProperty(subClass, \"prototype\", { writable: false }); if (superClass) _setPrototypeOf(subClass, superClass); }\n\nfunction _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }\n\nfunction _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }\n\nfunction _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === \"object\" || typeof call === \"function\")) { return call; } else if (call !== void 0) { throw new TypeError(\"Derived constructors may only return object or undefined\"); } return _assertThisInitialized(self); }\n\nfunction _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return self; }\n\nfunction _isNativeReflectConstruct() { if (typeof Reflect === \"undefined\" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === \"function\") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }\n\nfunction _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }\n\nfunction _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }\n\nfunction _nonIterableSpread() { throw new TypeError(\"Invalid attempt to spread non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\"); }\n\nfunction _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === \"string\") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === \"Object\" && o.constructor) n = o.constructor.name; if (n === \"Map\" || n === \"Set\") return Array.from(o); if (n === \"Arguments\" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }\n\nfunction _iterableToArray(iter) { if (typeof Symbol !== \"undefined\" && iter[Symbol.iterator] != null || iter[\"@@iterator\"] != null) return Array.from(iter); }\n\nfunction _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }\n\nfunction _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, \"prototype\", { writable: false }); return Constructor; }\n\n/**\n * @license Angular v11.0.2\n * (c) 2010-2020 Google LLC. https://angular.io/\n * License: MIT\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nvar TagContentType;\n\n(function (TagContentType) {\n  TagContentType[TagContentType[\"RAW_TEXT\"] = 0] = \"RAW_TEXT\";\n  TagContentType[TagContentType[\"ESCAPABLE_RAW_TEXT\"] = 1] = \"ESCAPABLE_RAW_TEXT\";\n  TagContentType[TagContentType[\"PARSABLE_DATA\"] = 2] = \"PARSABLE_DATA\";\n})(TagContentType || (TagContentType = {}));\n\nfunction splitNsName(elementName) {\n  if (elementName[0] != ':') {\n    return [null, elementName];\n  }\n\n  var colonIndex = elementName.indexOf(':', 1);\n\n  if (colonIndex == -1) {\n    throw new Error(\"Unsupported format \\\"\".concat(elementName, \"\\\" expecting \\\":namespace:name\\\"\"));\n  }\n\n  return [elementName.slice(1, colonIndex), elementName.slice(colonIndex + 1)];\n} // `<ng-container>` tags work the same regardless the namespace\n\n\nfunction isNgContainer(tagName) {\n  return splitNsName(tagName)[1] === 'ng-container';\n} // `<ng-content>` tags work the same regardless the namespace\n\n\nfunction isNgContent(tagName) {\n  return splitNsName(tagName)[1] === 'ng-content';\n} // `<ng-template>` tags work the same regardless the namespace\n\n\nfunction isNgTemplate(tagName) {\n  return splitNsName(tagName)[1] === 'ng-template';\n}\n\nfunction getNsPrefix(fullName) {\n  return fullName === null ? null : splitNsName(fullName)[0];\n}\n\nfunction mergeNsAndName(prefix, localName) {\n  return prefix ? \":\".concat(prefix, \":\").concat(localName) : localName;\n} // see http://www.w3.org/TR/html51/syntax.html#named-character-references\n// see https://html.spec.whatwg.org/multipage/entities.json\n// This list is not exhaustive to keep the compiler footprint low.\n// The `&#123;` / `&#x1ab;` syntax should be used when the named character reference does not\n// exist.\n\n\nvar NAMED_ENTITIES = {\n  'Aacute': \"\\xC1\",\n  'aacute': \"\\xE1\",\n  'Acirc': \"\\xC2\",\n  'acirc': \"\\xE2\",\n  'acute': \"\\xB4\",\n  'AElig': \"\\xC6\",\n  'aelig': \"\\xE6\",\n  'Agrave': \"\\xC0\",\n  'agrave': \"\\xE0\",\n  'alefsym': \"\\u2135\",\n  'Alpha': \"\\u0391\",\n  'alpha': \"\\u03B1\",\n  'amp': '&',\n  'and': \"\\u2227\",\n  'ang': \"\\u2220\",\n  'apos': \"'\",\n  'Aring': \"\\xC5\",\n  'aring': \"\\xE5\",\n  'asymp': \"\\u2248\",\n  'Atilde': \"\\xC3\",\n  'atilde': \"\\xE3\",\n  'Auml': \"\\xC4\",\n  'auml': \"\\xE4\",\n  'bdquo': \"\\u201E\",\n  'Beta': \"\\u0392\",\n  'beta': \"\\u03B2\",\n  'brvbar': \"\\xA6\",\n  'bull': \"\\u2022\",\n  'cap': \"\\u2229\",\n  'Ccedil': \"\\xC7\",\n  'ccedil': \"\\xE7\",\n  'cedil': \"\\xB8\",\n  'cent': \"\\xA2\",\n  'Chi': \"\\u03A7\",\n  'chi': \"\\u03C7\",\n  'circ': \"\\u02C6\",\n  'clubs': \"\\u2663\",\n  'cong': \"\\u2245\",\n  'copy': \"\\xA9\",\n  'crarr': \"\\u21B5\",\n  'cup': \"\\u222A\",\n  'curren': \"\\xA4\",\n  'dagger': \"\\u2020\",\n  'Dagger': \"\\u2021\",\n  'darr': \"\\u2193\",\n  'dArr': \"\\u21D3\",\n  'deg': \"\\xB0\",\n  'Delta': \"\\u0394\",\n  'delta': \"\\u03B4\",\n  'diams': \"\\u2666\",\n  'divide': \"\\xF7\",\n  'Eacute': \"\\xC9\",\n  'eacute': \"\\xE9\",\n  'Ecirc': \"\\xCA\",\n  'ecirc': \"\\xEA\",\n  'Egrave': \"\\xC8\",\n  'egrave': \"\\xE8\",\n  'empty': \"\\u2205\",\n  'emsp': \"\\u2003\",\n  'ensp': \"\\u2002\",\n  'Epsilon': \"\\u0395\",\n  'epsilon': \"\\u03B5\",\n  'equiv': \"\\u2261\",\n  'Eta': \"\\u0397\",\n  'eta': \"\\u03B7\",\n  'ETH': \"\\xD0\",\n  'eth': \"\\xF0\",\n  'Euml': \"\\xCB\",\n  'euml': \"\\xEB\",\n  'euro': \"\\u20AC\",\n  'exist': \"\\u2203\",\n  'fnof': \"\\u0192\",\n  'forall': \"\\u2200\",\n  'frac12': \"\\xBD\",\n  'frac14': \"\\xBC\",\n  'frac34': \"\\xBE\",\n  'frasl': \"\\u2044\",\n  'Gamma': \"\\u0393\",\n  'gamma': \"\\u03B3\",\n  'ge': \"\\u2265\",\n  'gt': '>',\n  'harr': \"\\u2194\",\n  'hArr': \"\\u21D4\",\n  'hearts': \"\\u2665\",\n  'hellip': \"\\u2026\",\n  'Iacute': \"\\xCD\",\n  'iacute': \"\\xED\",\n  'Icirc': \"\\xCE\",\n  'icirc': \"\\xEE\",\n  'iexcl': \"\\xA1\",\n  'Igrave': \"\\xCC\",\n  'igrave': \"\\xEC\",\n  'image': \"\\u2111\",\n  'infin': \"\\u221E\",\n  'int': \"\\u222B\",\n  'Iota': \"\\u0399\",\n  'iota': \"\\u03B9\",\n  'iquest': \"\\xBF\",\n  'isin': \"\\u2208\",\n  'Iuml': \"\\xCF\",\n  'iuml': \"\\xEF\",\n  'Kappa': \"\\u039A\",\n  'kappa': \"\\u03BA\",\n  'Lambda': \"\\u039B\",\n  'lambda': \"\\u03BB\",\n  'lang': \"\\u27E8\",\n  'laquo': \"\\xAB\",\n  'larr': \"\\u2190\",\n  'lArr': \"\\u21D0\",\n  'lceil': \"\\u2308\",\n  'ldquo': \"\\u201C\",\n  'le': \"\\u2264\",\n  'lfloor': \"\\u230A\",\n  'lowast': \"\\u2217\",\n  'loz': \"\\u25CA\",\n  'lrm': \"\\u200E\",\n  'lsaquo': \"\\u2039\",\n  'lsquo': \"\\u2018\",\n  'lt': '<',\n  'macr': \"\\xAF\",\n  'mdash': \"\\u2014\",\n  'micro': \"\\xB5\",\n  'middot': \"\\xB7\",\n  'minus': \"\\u2212\",\n  'Mu': \"\\u039C\",\n  'mu': \"\\u03BC\",\n  'nabla': \"\\u2207\",\n  'nbsp': \"\\xA0\",\n  'ndash': \"\\u2013\",\n  'ne': \"\\u2260\",\n  'ni': \"\\u220B\",\n  'not': \"\\xAC\",\n  'notin': \"\\u2209\",\n  'nsub': \"\\u2284\",\n  'Ntilde': \"\\xD1\",\n  'ntilde': \"\\xF1\",\n  'Nu': \"\\u039D\",\n  'nu': \"\\u03BD\",\n  'Oacute': \"\\xD3\",\n  'oacute': \"\\xF3\",\n  'Ocirc': \"\\xD4\",\n  'ocirc': \"\\xF4\",\n  'OElig': \"\\u0152\",\n  'oelig': \"\\u0153\",\n  'Ograve': \"\\xD2\",\n  'ograve': \"\\xF2\",\n  'oline': \"\\u203E\",\n  'Omega': \"\\u03A9\",\n  'omega': \"\\u03C9\",\n  'Omicron': \"\\u039F\",\n  'omicron': \"\\u03BF\",\n  'oplus': \"\\u2295\",\n  'or': \"\\u2228\",\n  'ordf': \"\\xAA\",\n  'ordm': \"\\xBA\",\n  'Oslash': \"\\xD8\",\n  'oslash': \"\\xF8\",\n  'Otilde': \"\\xD5\",\n  'otilde': \"\\xF5\",\n  'otimes': \"\\u2297\",\n  'Ouml': \"\\xD6\",\n  'ouml': \"\\xF6\",\n  'para': \"\\xB6\",\n  'permil': \"\\u2030\",\n  'perp': \"\\u22A5\",\n  'Phi': \"\\u03A6\",\n  'phi': \"\\u03C6\",\n  'Pi': \"\\u03A0\",\n  'pi': \"\\u03C0\",\n  'piv': \"\\u03D6\",\n  'plusmn': \"\\xB1\",\n  'pound': \"\\xA3\",\n  'prime': \"\\u2032\",\n  'Prime': \"\\u2033\",\n  'prod': \"\\u220F\",\n  'prop': \"\\u221D\",\n  'Psi': \"\\u03A8\",\n  'psi': \"\\u03C8\",\n  'quot': \"\\\"\",\n  'radic': \"\\u221A\",\n  'rang': \"\\u27E9\",\n  'raquo': \"\\xBB\",\n  'rarr': \"\\u2192\",\n  'rArr': \"\\u21D2\",\n  'rceil': \"\\u2309\",\n  'rdquo': \"\\u201D\",\n  'real': \"\\u211C\",\n  'reg': \"\\xAE\",\n  'rfloor': \"\\u230B\",\n  'Rho': \"\\u03A1\",\n  'rho': \"\\u03C1\",\n  'rlm': \"\\u200F\",\n  'rsaquo': \"\\u203A\",\n  'rsquo': \"\\u2019\",\n  'sbquo': \"\\u201A\",\n  'Scaron': \"\\u0160\",\n  'scaron': \"\\u0161\",\n  'sdot': \"\\u22C5\",\n  'sect': \"\\xA7\",\n  'shy': \"\\xAD\",\n  'Sigma': \"\\u03A3\",\n  'sigma': \"\\u03C3\",\n  'sigmaf': \"\\u03C2\",\n  'sim': \"\\u223C\",\n  'spades': \"\\u2660\",\n  'sub': \"\\u2282\",\n  'sube': \"\\u2286\",\n  'sum': \"\\u2211\",\n  'sup': \"\\u2283\",\n  'sup1': \"\\xB9\",\n  'sup2': \"\\xB2\",\n  'sup3': \"\\xB3\",\n  'supe': \"\\u2287\",\n  'szlig': \"\\xDF\",\n  'Tau': \"\\u03A4\",\n  'tau': \"\\u03C4\",\n  'there4': \"\\u2234\",\n  'Theta': \"\\u0398\",\n  'theta': \"\\u03B8\",\n  'thetasym': \"\\u03D1\",\n  'thinsp': \"\\u2009\",\n  'THORN': \"\\xDE\",\n  'thorn': \"\\xFE\",\n  'tilde': \"\\u02DC\",\n  'times': \"\\xD7\",\n  'trade': \"\\u2122\",\n  'Uacute': \"\\xDA\",\n  'uacute': \"\\xFA\",\n  'uarr': \"\\u2191\",\n  'uArr': \"\\u21D1\",\n  'Ucirc': \"\\xDB\",\n  'ucirc': \"\\xFB\",\n  'Ugrave': \"\\xD9\",\n  'ugrave': \"\\xF9\",\n  'uml': \"\\xA8\",\n  'upsih': \"\\u03D2\",\n  'Upsilon': \"\\u03A5\",\n  'upsilon': \"\\u03C5\",\n  'Uuml': \"\\xDC\",\n  'uuml': \"\\xFC\",\n  'weierp': \"\\u2118\",\n  'Xi': \"\\u039E\",\n  'xi': \"\\u03BE\",\n  'Yacute': \"\\xDD\",\n  'yacute': \"\\xFD\",\n  'yen': \"\\xA5\",\n  'yuml': \"\\xFF\",\n  'Yuml': \"\\u0178\",\n  'Zeta': \"\\u0396\",\n  'zeta': \"\\u03B6\",\n  'zwj': \"\\u200D\",\n  'zwnj': \"\\u200C\"\n}; // The &ngsp; pseudo-entity is denoting a space. see:\n// https://github.com/dart-lang/angular/blob/0bb611387d29d65b5af7f9d2515ab571fd3fbee4/_tests/test/compiler/preserve_whitespace_test.dart\n\nvar NGSP_UNICODE = \"\\uE500\";\nNAMED_ENTITIES['ngsp'] = NGSP_UNICODE;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar HtmlTagDefinition = /*#__PURE__*/function () {\n  function HtmlTagDefinition() {\n    var _this = this;\n\n    var _ref2 = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},\n        closedByChildren = _ref2.closedByChildren,\n        implicitNamespacePrefix = _ref2.implicitNamespacePrefix,\n        _ref2$contentType = _ref2.contentType,\n        contentType = _ref2$contentType === void 0 ? TagContentType.PARSABLE_DATA : _ref2$contentType,\n        _ref2$closedByParent = _ref2.closedByParent,\n        closedByParent = _ref2$closedByParent === void 0 ? false : _ref2$closedByParent,\n        _ref2$isVoid = _ref2.isVoid,\n        isVoid = _ref2$isVoid === void 0 ? false : _ref2$isVoid,\n        _ref2$ignoreFirstLf = _ref2.ignoreFirstLf,\n        ignoreFirstLf = _ref2$ignoreFirstLf === void 0 ? false : _ref2$ignoreFirstLf,\n        _ref2$preventNamespac = _ref2.preventNamespaceInheritance,\n        preventNamespaceInheritance = _ref2$preventNamespac === void 0 ? false : _ref2$preventNamespac;\n\n    _classCallCheck(this, HtmlTagDefinition);\n\n    this.closedByChildren = {};\n    this.closedByParent = false;\n    this.canSelfClose = false;\n\n    if (closedByChildren && closedByChildren.length > 0) {\n      closedByChildren.forEach(function (tagName) {\n        return _this.closedByChildren[tagName] = true;\n      });\n    }\n\n    this.isVoid = isVoid;\n    this.closedByParent = closedByParent || isVoid;\n    this.implicitNamespacePrefix = implicitNamespacePrefix || null;\n    this.contentType = contentType;\n    this.ignoreFirstLf = ignoreFirstLf;\n    this.preventNamespaceInheritance = preventNamespaceInheritance;\n  }\n\n  _createClass(HtmlTagDefinition, [{\n    key: \"isClosedByChild\",\n    value: function isClosedByChild(name) {\n      return this.isVoid || name.toLowerCase() in this.closedByChildren;\n    }\n  }]);\n\n  return HtmlTagDefinition;\n}();\n\nvar _DEFAULT_TAG_DEFINITION; // see http://www.w3.org/TR/html51/syntax.html#optional-tags\n// This implementation does not fully conform to the HTML5 spec.\n\n\nvar TAG_DEFINITIONS;\n\nfunction getHtmlTagDefinition(tagName) {\n  var _a, _b;\n\n  if (!TAG_DEFINITIONS) {\n    _DEFAULT_TAG_DEFINITION = new HtmlTagDefinition();\n    TAG_DEFINITIONS = {\n      'base': new HtmlTagDefinition({\n        isVoid: true\n      }),\n      'meta': new HtmlTagDefinition({\n        isVoid: true\n      }),\n      'area': new HtmlTagDefinition({\n        isVoid: true\n      }),\n      'embed': new HtmlTagDefinition({\n        isVoid: true\n      }),\n      'link': new HtmlTagDefinition({\n        isVoid: true\n      }),\n      'img': new HtmlTagDefinition({\n        isVoid: true\n      }),\n      'input': new HtmlTagDefinition({\n        isVoid: true\n      }),\n      'param': new HtmlTagDefinition({\n        isVoid: true\n      }),\n      'hr': new HtmlTagDefinition({\n        isVoid: true\n      }),\n      'br': new HtmlTagDefinition({\n        isVoid: true\n      }),\n      'source': new HtmlTagDefinition({\n        isVoid: true\n      }),\n      'track': new HtmlTagDefinition({\n        isVoid: true\n      }),\n      'wbr': new HtmlTagDefinition({\n        isVoid: true\n      }),\n      'p': new HtmlTagDefinition({\n        closedByChildren: ['address', 'article', 'aside', 'blockquote', 'div', 'dl', 'fieldset', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'header', 'hgroup', 'hr', 'main', 'nav', 'ol', 'p', 'pre', 'section', 'table', 'ul'],\n        closedByParent: true\n      }),\n      'thead': new HtmlTagDefinition({\n        closedByChildren: ['tbody', 'tfoot']\n      }),\n      'tbody': new HtmlTagDefinition({\n        closedByChildren: ['tbody', 'tfoot'],\n        closedByParent: true\n      }),\n      'tfoot': new HtmlTagDefinition({\n        closedByChildren: ['tbody'],\n        closedByParent: true\n      }),\n      'tr': new HtmlTagDefinition({\n        closedByChildren: ['tr'],\n        closedByParent: true\n      }),\n      'td': new HtmlTagDefinition({\n        closedByChildren: ['td', 'th'],\n        closedByParent: true\n      }),\n      'th': new HtmlTagDefinition({\n        closedByChildren: ['td', 'th'],\n        closedByParent: true\n      }),\n      'col': new HtmlTagDefinition({\n        isVoid: true\n      }),\n      'svg': new HtmlTagDefinition({\n        implicitNamespacePrefix: 'svg'\n      }),\n      'foreignObject': new HtmlTagDefinition({\n        // Usually the implicit namespace here would be redundant since it will be inherited from\n        // the parent `svg`, but we have to do it for `foreignObject`, because the way the parser\n        // works is that the parent node of an end tag is its own start tag which means that\n        // the `preventNamespaceInheritance` on `foreignObject` would have it default to the\n        // implicit namespace which is `html`, unless specified otherwise.\n        implicitNamespacePrefix: 'svg',\n        // We want to prevent children of foreignObject from inheriting its namespace, because\n        // the point of the element is to allow nodes from other namespaces to be inserted.\n        preventNamespaceInheritance: true\n      }),\n      'math': new HtmlTagDefinition({\n        implicitNamespacePrefix: 'math'\n      }),\n      'li': new HtmlTagDefinition({\n        closedByChildren: ['li'],\n        closedByParent: true\n      }),\n      'dt': new HtmlTagDefinition({\n        closedByChildren: ['dt', 'dd']\n      }),\n      'dd': new HtmlTagDefinition({\n        closedByChildren: ['dt', 'dd'],\n        closedByParent: true\n      }),\n      'rb': new HtmlTagDefinition({\n        closedByChildren: ['rb', 'rt', 'rtc', 'rp'],\n        closedByParent: true\n      }),\n      'rt': new HtmlTagDefinition({\n        closedByChildren: ['rb', 'rt', 'rtc', 'rp'],\n        closedByParent: true\n      }),\n      'rtc': new HtmlTagDefinition({\n        closedByChildren: ['rb', 'rtc', 'rp'],\n        closedByParent: true\n      }),\n      'rp': new HtmlTagDefinition({\n        closedByChildren: ['rb', 'rt', 'rtc', 'rp'],\n        closedByParent: true\n      }),\n      'optgroup': new HtmlTagDefinition({\n        closedByChildren: ['optgroup'],\n        closedByParent: true\n      }),\n      'option': new HtmlTagDefinition({\n        closedByChildren: ['option', 'optgroup'],\n        closedByParent: true\n      }),\n      'pre': new HtmlTagDefinition({\n        ignoreFirstLf: true\n      }),\n      'listing': new HtmlTagDefinition({\n        ignoreFirstLf: true\n      }),\n      'style': new HtmlTagDefinition({\n        contentType: TagContentType.RAW_TEXT\n      }),\n      'script': new HtmlTagDefinition({\n        contentType: TagContentType.RAW_TEXT\n      }),\n      'title': new HtmlTagDefinition({\n        contentType: TagContentType.ESCAPABLE_RAW_TEXT\n      }),\n      'textarea': new HtmlTagDefinition({\n        contentType: TagContentType.ESCAPABLE_RAW_TEXT,\n        ignoreFirstLf: true\n      })\n    };\n  } // We have to make both a case-sensitive and a case-insesitive lookup, because\n  // HTML tag names are case insensitive, whereas some SVG tags are case sensitive.\n\n\n  return (_b = (_a = TAG_DEFINITIONS[tagName]) !== null && _a !== void 0 ? _a : TAG_DEFINITIONS[tagName.toLowerCase()]) !== null && _b !== void 0 ? _b : _DEFAULT_TAG_DEFINITION;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar _SELECTOR_REGEXP = new RegExp('(\\\\:not\\\\()|' + // 1: \":not(\"\n'(([\\\\.\\\\#]?)[-\\\\w]+)|' + // 2: \"tag\"; 3: \".\"/\"#\";\n// \"-\" should appear first in the regexp below as FF31 parses \"[.-\\w]\" as a range\n// 4: attribute; 5: attribute_string; 6: attribute_value\n'(?:\\\\[([-.\\\\w*]+)(?:=([\\\"\\']?)([^\\\\]\\\"\\']*)\\\\5)?\\\\])|' + // \"[name]\", \"[name=value]\",\n// \"[name=\"value\"]\",\n// \"[name='value']\"\n'(\\\\))|' + // 7: \")\"\n'(\\\\s*,\\\\s*)', // 8: \",\"\n'g');\n/**\n * A css selector contains an element name,\n * css classes and attribute/value pairs with the purpose\n * of selecting subsets out of them.\n */\n\n\nvar CssSelector = /*#__PURE__*/function () {\n  function CssSelector() {\n    _classCallCheck(this, CssSelector);\n\n    this.element = null;\n    this.classNames = [];\n    /**\n     * The selectors are encoded in pairs where:\n     * - even locations are attribute names\n     * - odd locations are attribute values.\n     *\n     * Example:\n     * Selector: `[key1=value1][key2]` would parse to:\n     * ```\n     * ['key1', 'value1', 'key2', '']\n     * ```\n     */\n\n    this.attrs = [];\n    this.notSelectors = [];\n  }\n\n  _createClass(CssSelector, [{\n    key: \"isElementSelector\",\n    value: function isElementSelector() {\n      return this.hasElementSelector() && this.classNames.length == 0 && this.attrs.length == 0 && this.notSelectors.length === 0;\n    }\n  }, {\n    key: \"hasElementSelector\",\n    value: function hasElementSelector() {\n      return !!this.element;\n    }\n  }, {\n    key: \"setElement\",\n    value: function setElement() {\n      var element = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;\n      this.element = element;\n    }\n    /** Gets a template string for an element that matches the selector. */\n\n  }, {\n    key: \"getMatchingElementTemplate\",\n    value: function getMatchingElementTemplate() {\n      var tagName = this.element || 'div';\n      var classAttr = this.classNames.length > 0 ? \" class=\\\"\".concat(this.classNames.join(' '), \"\\\"\") : '';\n      var attrs = '';\n\n      for (var i = 0; i < this.attrs.length; i += 2) {\n        var attrName = this.attrs[i];\n        var attrValue = this.attrs[i + 1] !== '' ? \"=\\\"\".concat(this.attrs[i + 1], \"\\\"\") : '';\n        attrs += \" \".concat(attrName).concat(attrValue);\n      }\n\n      return getHtmlTagDefinition(tagName).isVoid ? \"<\".concat(tagName).concat(classAttr).concat(attrs, \"/>\") : \"<\".concat(tagName).concat(classAttr).concat(attrs, \"></\").concat(tagName, \">\");\n    }\n  }, {\n    key: \"getAttrs\",\n    value: function getAttrs() {\n      var result = [];\n\n      if (this.classNames.length > 0) {\n        result.push('class', this.classNames.join(' '));\n      }\n\n      return result.concat(this.attrs);\n    }\n  }, {\n    key: \"addAttribute\",\n    value: function addAttribute(name) {\n      var value = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';\n      this.attrs.push(name, value && value.toLowerCase() || '');\n    }\n  }, {\n    key: \"addClassName\",\n    value: function addClassName(name) {\n      this.classNames.push(name.toLowerCase());\n    }\n  }, {\n    key: \"toString\",\n    value: function toString() {\n      var res = this.element || '';\n\n      if (this.classNames) {\n        this.classNames.forEach(function (klass) {\n          return res += \".\".concat(klass);\n        });\n      }\n\n      if (this.attrs) {\n        for (var i = 0; i < this.attrs.length; i += 2) {\n          var name = this.attrs[i];\n          var value = this.attrs[i + 1];\n          res += \"[\".concat(name).concat(value ? '=' + value : '', \"]\");\n        }\n      }\n\n      this.notSelectors.forEach(function (notSelector) {\n        return res += \":not(\".concat(notSelector, \")\");\n      });\n      return res;\n    }\n  }], [{\n    key: \"parse\",\n    value: function parse(selector) {\n      var results = [];\n\n      var _addResult = function _addResult(res, cssSel) {\n        if (cssSel.notSelectors.length > 0 && !cssSel.element && cssSel.classNames.length == 0 && cssSel.attrs.length == 0) {\n          cssSel.element = '*';\n        }\n\n        res.push(cssSel);\n      };\n\n      var cssSelector = new CssSelector();\n      var match;\n      var current = cssSelector;\n      var inNot = false;\n      _SELECTOR_REGEXP.lastIndex = 0;\n\n      while (match = _SELECTOR_REGEXP.exec(selector)) {\n        if (match[1\n        /* NOT */\n        ]) {\n          if (inNot) {\n            throw new Error('Nesting :not in a selector is not allowed');\n          }\n\n          inNot = true;\n          current = new CssSelector();\n          cssSelector.notSelectors.push(current);\n        }\n\n        var tag = match[2\n        /* TAG */\n        ];\n\n        if (tag) {\n          var prefix = match[3\n          /* PREFIX */\n          ];\n\n          if (prefix === '#') {\n            // #hash\n            current.addAttribute('id', tag.substr(1));\n          } else if (prefix === '.') {\n            // Class\n            current.addClassName(tag.substr(1));\n          } else {\n            // Element\n            current.setElement(tag);\n          }\n        }\n\n        var attribute = match[4\n        /* ATTRIBUTE */\n        ];\n\n        if (attribute) {\n          current.addAttribute(attribute, match[6\n          /* ATTRIBUTE_VALUE */\n          ]);\n        }\n\n        if (match[7\n        /* NOT_END */\n        ]) {\n          inNot = false;\n          current = cssSelector;\n        }\n\n        if (match[8\n        /* SEPARATOR */\n        ]) {\n          if (inNot) {\n            throw new Error('Multiple selectors in :not are not supported');\n          }\n\n          _addResult(results, cssSelector);\n\n          cssSelector = current = new CssSelector();\n        }\n      }\n\n      _addResult(results, cssSelector);\n\n      return results;\n    }\n  }]);\n\n  return CssSelector;\n}();\n/**\n * Reads a list of CssSelectors and allows to calculate which ones\n * are contained in a given CssSelector.\n */\n\n\nvar SelectorMatcher = /*#__PURE__*/function () {\n  function SelectorMatcher() {\n    _classCallCheck(this, SelectorMatcher);\n\n    this._elementMap = new Map();\n    this._elementPartialMap = new Map();\n    this._classMap = new Map();\n    this._classPartialMap = new Map();\n    this._attrValueMap = new Map();\n    this._attrValuePartialMap = new Map();\n    this._listContexts = [];\n  }\n\n  _createClass(SelectorMatcher, [{\n    key: \"addSelectables\",\n    value: function addSelectables(cssSelectors, callbackCtxt) {\n      var listContext = null;\n\n      if (cssSelectors.length > 1) {\n        listContext = new SelectorListContext(cssSelectors);\n\n        this._listContexts.push(listContext);\n      }\n\n      for (var i = 0; i < cssSelectors.length; i++) {\n        this._addSelectable(cssSelectors[i], callbackCtxt, listContext);\n      }\n    }\n    /**\n     * Add an object that can be found later on by calling `match`.\n     * @param cssSelector A css selector\n     * @param callbackCtxt An opaque object that will be given to the callback of the `match` function\n     */\n\n  }, {\n    key: \"_addSelectable\",\n    value: function _addSelectable(cssSelector, callbackCtxt, listContext) {\n      var matcher = this;\n      var element = cssSelector.element;\n      var classNames = cssSelector.classNames;\n      var attrs = cssSelector.attrs;\n      var selectable = new SelectorContext(cssSelector, callbackCtxt, listContext);\n\n      if (element) {\n        var isTerminal = attrs.length === 0 && classNames.length === 0;\n\n        if (isTerminal) {\n          this._addTerminal(matcher._elementMap, element, selectable);\n        } else {\n          matcher = this._addPartial(matcher._elementPartialMap, element);\n        }\n      }\n\n      if (classNames) {\n        for (var i = 0; i < classNames.length; i++) {\n          var _isTerminal = attrs.length === 0 && i === classNames.length - 1;\n\n          var className = classNames[i];\n\n          if (_isTerminal) {\n            this._addTerminal(matcher._classMap, className, selectable);\n          } else {\n            matcher = this._addPartial(matcher._classPartialMap, className);\n          }\n        }\n      }\n\n      if (attrs) {\n        for (var _i = 0; _i < attrs.length; _i += 2) {\n          var _isTerminal2 = _i === attrs.length - 2;\n\n          var name = attrs[_i];\n          var value = attrs[_i + 1];\n\n          if (_isTerminal2) {\n            var terminalMap = matcher._attrValueMap;\n            var terminalValuesMap = terminalMap.get(name);\n\n            if (!terminalValuesMap) {\n              terminalValuesMap = new Map();\n              terminalMap.set(name, terminalValuesMap);\n            }\n\n            this._addTerminal(terminalValuesMap, value, selectable);\n          } else {\n            var partialMap = matcher._attrValuePartialMap;\n            var partialValuesMap = partialMap.get(name);\n\n            if (!partialValuesMap) {\n              partialValuesMap = new Map();\n              partialMap.set(name, partialValuesMap);\n            }\n\n            matcher = this._addPartial(partialValuesMap, value);\n          }\n        }\n      }\n    }\n  }, {\n    key: \"_addTerminal\",\n    value: function _addTerminal(map, name, selectable) {\n      var terminalList = map.get(name);\n\n      if (!terminalList) {\n        terminalList = [];\n        map.set(name, terminalList);\n      }\n\n      terminalList.push(selectable);\n    }\n  }, {\n    key: \"_addPartial\",\n    value: function _addPartial(map, name) {\n      var matcher = map.get(name);\n\n      if (!matcher) {\n        matcher = new SelectorMatcher();\n        map.set(name, matcher);\n      }\n\n      return matcher;\n    }\n    /**\n     * Find the objects that have been added via `addSelectable`\n     * whose css selector is contained in the given css selector.\n     * @param cssSelector A css selector\n     * @param matchedCallback This callback will be called with the object handed into `addSelectable`\n     * @return boolean true if a match was found\n     */\n\n  }, {\n    key: \"match\",\n    value: function match(cssSelector, matchedCallback) {\n      var result = false;\n      var element = cssSelector.element;\n      var classNames = cssSelector.classNames;\n      var attrs = cssSelector.attrs;\n\n      for (var i = 0; i < this._listContexts.length; i++) {\n        this._listContexts[i].alreadyMatched = false;\n      }\n\n      result = this._matchTerminal(this._elementMap, element, cssSelector, matchedCallback) || result;\n      result = this._matchPartial(this._elementPartialMap, element, cssSelector, matchedCallback) || result;\n\n      if (classNames) {\n        for (var _i2 = 0; _i2 < classNames.length; _i2++) {\n          var className = classNames[_i2];\n          result = this._matchTerminal(this._classMap, className, cssSelector, matchedCallback) || result;\n          result = this._matchPartial(this._classPartialMap, className, cssSelector, matchedCallback) || result;\n        }\n      }\n\n      if (attrs) {\n        for (var _i3 = 0; _i3 < attrs.length; _i3 += 2) {\n          var name = attrs[_i3];\n          var value = attrs[_i3 + 1];\n\n          var terminalValuesMap = this._attrValueMap.get(name);\n\n          if (value) {\n            result = this._matchTerminal(terminalValuesMap, '', cssSelector, matchedCallback) || result;\n          }\n\n          result = this._matchTerminal(terminalValuesMap, value, cssSelector, matchedCallback) || result;\n\n          var partialValuesMap = this._attrValuePartialMap.get(name);\n\n          if (value) {\n            result = this._matchPartial(partialValuesMap, '', cssSelector, matchedCallback) || result;\n          }\n\n          result = this._matchPartial(partialValuesMap, value, cssSelector, matchedCallback) || result;\n        }\n      }\n\n      return result;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_matchTerminal\",\n    value: function _matchTerminal(map, name, cssSelector, matchedCallback) {\n      if (!map || typeof name !== 'string') {\n        return false;\n      }\n\n      var selectables = map.get(name) || [];\n      var starSelectables = map.get('*');\n\n      if (starSelectables) {\n        selectables = selectables.concat(starSelectables);\n      }\n\n      if (selectables.length === 0) {\n        return false;\n      }\n\n      var selectable;\n      var result = false;\n\n      for (var i = 0; i < selectables.length; i++) {\n        selectable = selectables[i];\n        result = selectable.finalize(cssSelector, matchedCallback) || result;\n      }\n\n      return result;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_matchPartial\",\n    value: function _matchPartial(map, name, cssSelector, matchedCallback) {\n      if (!map || typeof name !== 'string') {\n        return false;\n      }\n\n      var nestedSelector = map.get(name);\n\n      if (!nestedSelector) {\n        return false;\n      } // TODO(perf): get rid of recursion and measure again\n      // TODO(perf): don't pass the whole selector into the recursion,\n      // but only the not processed parts\n\n\n      return nestedSelector.match(cssSelector, matchedCallback);\n    }\n  }], [{\n    key: \"createNotMatcher\",\n    value: function createNotMatcher(notSelectors) {\n      var notMatcher = new SelectorMatcher();\n      notMatcher.addSelectables(notSelectors, null);\n      return notMatcher;\n    }\n  }]);\n\n  return SelectorMatcher;\n}();\n\nvar SelectorListContext = /*#__PURE__*/_createClass(function SelectorListContext(selectors) {\n  _classCallCheck(this, SelectorListContext);\n\n  this.selectors = selectors;\n  this.alreadyMatched = false;\n}); // Store context to pass back selector and context when a selector is matched\n\n\nvar SelectorContext = /*#__PURE__*/function () {\n  function SelectorContext(selector, cbContext, listContext) {\n    _classCallCheck(this, SelectorContext);\n\n    this.selector = selector;\n    this.cbContext = cbContext;\n    this.listContext = listContext;\n    this.notSelectors = selector.notSelectors;\n  }\n\n  _createClass(SelectorContext, [{\n    key: \"finalize\",\n    value: function finalize(cssSelector, callback) {\n      var result = true;\n\n      if (this.notSelectors.length > 0 && (!this.listContext || !this.listContext.alreadyMatched)) {\n        var notMatcher = SelectorMatcher.createNotMatcher(this.notSelectors);\n        result = !notMatcher.match(cssSelector, null);\n      }\n\n      if (result && callback && (!this.listContext || !this.listContext.alreadyMatched)) {\n        if (this.listContext) {\n          this.listContext.alreadyMatched = true;\n        }\n\n        callback(this.selector, this.cbContext);\n      }\n\n      return result;\n    }\n  }]);\n\n  return SelectorContext;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar createInject = makeMetadataFactory('Inject', function (token) {\n  return {\n    token: token\n  };\n});\nvar createInjectionToken = makeMetadataFactory('InjectionToken', function (desc) {\n  return {\n    _desc: desc,\n    ɵprov: undefined\n  };\n});\nvar createAttribute = makeMetadataFactory('Attribute', function (attributeName) {\n  return {\n    attributeName: attributeName\n  };\n});\nvar createContentChildren = makeMetadataFactory('ContentChildren', function (selector) {\n  var data = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n  return Object.assign({\n    selector: selector,\n    first: false,\n    isViewQuery: false,\n    descendants: false\n  }, data);\n});\nvar createContentChild = makeMetadataFactory('ContentChild', function (selector) {\n  var data = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n  return Object.assign({\n    selector: selector,\n    first: true,\n    isViewQuery: false,\n    descendants: true\n  }, data);\n});\nvar createViewChildren = makeMetadataFactory('ViewChildren', function (selector) {\n  var data = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n  return Object.assign({\n    selector: selector,\n    first: false,\n    isViewQuery: true,\n    descendants: true\n  }, data);\n});\nvar createViewChild = makeMetadataFactory('ViewChild', function (selector, data) {\n  return Object.assign({\n    selector: selector,\n    first: true,\n    isViewQuery: true,\n    descendants: true\n  }, data);\n});\nvar createDirective = makeMetadataFactory('Directive', function () {\n  var dir = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n  return dir;\n});\nvar ViewEncapsulation;\n\n(function (ViewEncapsulation) {\n  ViewEncapsulation[ViewEncapsulation[\"Emulated\"] = 0] = \"Emulated\"; // Historically the 1 value was for `Native` encapsulation which has been removed as of v11.\n\n  ViewEncapsulation[ViewEncapsulation[\"None\"] = 2] = \"None\";\n  ViewEncapsulation[ViewEncapsulation[\"ShadowDom\"] = 3] = \"ShadowDom\";\n})(ViewEncapsulation || (ViewEncapsulation = {}));\n\nvar ChangeDetectionStrategy;\n\n(function (ChangeDetectionStrategy) {\n  ChangeDetectionStrategy[ChangeDetectionStrategy[\"OnPush\"] = 0] = \"OnPush\";\n  ChangeDetectionStrategy[ChangeDetectionStrategy[\"Default\"] = 1] = \"Default\";\n})(ChangeDetectionStrategy || (ChangeDetectionStrategy = {}));\n\nvar createComponent = makeMetadataFactory('Component', function () {\n  var c = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n  return Object.assign({\n    changeDetection: ChangeDetectionStrategy.Default\n  }, c);\n});\nvar createPipe = makeMetadataFactory('Pipe', function (p) {\n  return Object.assign({\n    pure: true\n  }, p);\n});\nvar createInput = makeMetadataFactory('Input', function (bindingPropertyName) {\n  return {\n    bindingPropertyName: bindingPropertyName\n  };\n});\nvar createOutput = makeMetadataFactory('Output', function (bindingPropertyName) {\n  return {\n    bindingPropertyName: bindingPropertyName\n  };\n});\nvar createHostBinding = makeMetadataFactory('HostBinding', function (hostPropertyName) {\n  return {\n    hostPropertyName: hostPropertyName\n  };\n});\nvar createHostListener = makeMetadataFactory('HostListener', function (eventName, args) {\n  return {\n    eventName: eventName,\n    args: args\n  };\n});\nvar createNgModule = makeMetadataFactory('NgModule', function (ngModule) {\n  return ngModule;\n});\nvar createInjectable = makeMetadataFactory('Injectable', function () {\n  var injectable = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n  return injectable;\n});\nvar CUSTOM_ELEMENTS_SCHEMA = {\n  name: 'custom-elements'\n};\nvar NO_ERRORS_SCHEMA = {\n  name: 'no-errors-schema'\n};\nvar createOptional = makeMetadataFactory('Optional');\nvar createSelf = makeMetadataFactory('Self');\nvar createSkipSelf = makeMetadataFactory('SkipSelf');\nvar createHost = makeMetadataFactory('Host');\nvar Type = Function;\nvar SecurityContext;\n\n(function (SecurityContext) {\n  SecurityContext[SecurityContext[\"NONE\"] = 0] = \"NONE\";\n  SecurityContext[SecurityContext[\"HTML\"] = 1] = \"HTML\";\n  SecurityContext[SecurityContext[\"STYLE\"] = 2] = \"STYLE\";\n  SecurityContext[SecurityContext[\"SCRIPT\"] = 3] = \"SCRIPT\";\n  SecurityContext[SecurityContext[\"URL\"] = 4] = \"URL\";\n  SecurityContext[SecurityContext[\"RESOURCE_URL\"] = 5] = \"RESOURCE_URL\";\n})(SecurityContext || (SecurityContext = {}));\n\nvar MissingTranslationStrategy;\n\n(function (MissingTranslationStrategy) {\n  MissingTranslationStrategy[MissingTranslationStrategy[\"Error\"] = 0] = \"Error\";\n  MissingTranslationStrategy[MissingTranslationStrategy[\"Warning\"] = 1] = \"Warning\";\n  MissingTranslationStrategy[MissingTranslationStrategy[\"Ignore\"] = 2] = \"Ignore\";\n})(MissingTranslationStrategy || (MissingTranslationStrategy = {}));\n\nfunction makeMetadataFactory(name, props) {\n  // This must be declared as a function, not a fat arrow, so that ES2015 devmode produces code\n  // that works with the static_reflector.ts in the ViewEngine compiler.\n  // In particular, `_registerDecoratorOrConstructor` assumes that the value returned here can be\n  // new'ed.\n  function factory() {\n    var values = props ? props.apply(void 0, arguments) : {};\n    return Object.assign({\n      ngMetadataName: name\n    }, values);\n  }\n\n  factory.isTypeOf = function (obj) {\n    return obj && obj.ngMetadataName === name;\n  };\n\n  factory.ngMetadataName = name;\n  return factory;\n}\n\nfunction parserSelectorToSimpleSelector(selector) {\n  var classes = selector.classNames && selector.classNames.length ? [8\n  /* CLASS */\n  ].concat(_toConsumableArray(selector.classNames)) : [];\n  var elementName = selector.element && selector.element !== '*' ? selector.element : '';\n  return [elementName].concat(_toConsumableArray(selector.attrs), _toConsumableArray(classes));\n}\n\nfunction parserSelectorToNegativeSelector(selector) {\n  var classes = selector.classNames && selector.classNames.length ? [8\n  /* CLASS */\n  ].concat(_toConsumableArray(selector.classNames)) : [];\n\n  if (selector.element) {\n    return [1\n    /* NOT */\n    | 4\n    /* ELEMENT */\n    , selector.element].concat(_toConsumableArray(selector.attrs), _toConsumableArray(classes));\n  } else if (selector.attrs.length) {\n    return [1\n    /* NOT */\n    | 2\n    /* ATTRIBUTE */\n    ].concat(_toConsumableArray(selector.attrs), _toConsumableArray(classes));\n  } else {\n    return selector.classNames && selector.classNames.length ? [1\n    /* NOT */\n    | 8\n    /* CLASS */\n    ].concat(_toConsumableArray(selector.classNames)) : [];\n  }\n}\n\nfunction parserSelectorToR3Selector(selector) {\n  var positive = parserSelectorToSimpleSelector(selector);\n  var negative = selector.notSelectors && selector.notSelectors.length ? selector.notSelectors.map(function (notSelector) {\n    return parserSelectorToNegativeSelector(notSelector);\n  }) : [];\n  return positive.concat.apply(positive, _toConsumableArray(negative));\n}\n\nfunction parseSelectorToR3Selector(selector) {\n  return selector ? CssSelector.parse(selector).map(parserSelectorToR3Selector) : [];\n}\n\nvar core = /*#__PURE__*/Object.freeze({\n  __proto__: null,\n  createInject: createInject,\n  createInjectionToken: createInjectionToken,\n  createAttribute: createAttribute,\n  createContentChildren: createContentChildren,\n  createContentChild: createContentChild,\n  createViewChildren: createViewChildren,\n  createViewChild: createViewChild,\n  createDirective: createDirective,\n\n  get ViewEncapsulation() {\n    return ViewEncapsulation;\n  },\n\n  get ChangeDetectionStrategy() {\n    return ChangeDetectionStrategy;\n  },\n\n  createComponent: createComponent,\n  createPipe: createPipe,\n  createInput: createInput,\n  createOutput: createOutput,\n  createHostBinding: createHostBinding,\n  createHostListener: createHostListener,\n  createNgModule: createNgModule,\n  createInjectable: createInjectable,\n  CUSTOM_ELEMENTS_SCHEMA: CUSTOM_ELEMENTS_SCHEMA,\n  NO_ERRORS_SCHEMA: NO_ERRORS_SCHEMA,\n  createOptional: createOptional,\n  createSelf: createSelf,\n  createSkipSelf: createSkipSelf,\n  createHost: createHost,\n  Type: Type,\n\n  get SecurityContext() {\n    return SecurityContext;\n  },\n\n  get MissingTranslationStrategy() {\n    return MissingTranslationStrategy;\n  },\n\n  parseSelectorToR3Selector: parseSelectorToR3Selector\n});\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n//// Types\n\nvar TypeModifier;\n\n(function (TypeModifier) {\n  TypeModifier[TypeModifier[\"Const\"] = 0] = \"Const\";\n})(TypeModifier || (TypeModifier = {}));\n\nvar Type$1 = /*#__PURE__*/function () {\n  function Type$1() {\n    var modifiers = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];\n\n    _classCallCheck(this, Type$1);\n\n    this.modifiers = modifiers;\n  }\n\n  _createClass(Type$1, [{\n    key: \"hasModifier\",\n    value: function hasModifier(modifier) {\n      return this.modifiers.indexOf(modifier) !== -1;\n    }\n  }]);\n\n  return Type$1;\n}();\n\nvar BuiltinTypeName;\n\n(function (BuiltinTypeName) {\n  BuiltinTypeName[BuiltinTypeName[\"Dynamic\"] = 0] = \"Dynamic\";\n  BuiltinTypeName[BuiltinTypeName[\"Bool\"] = 1] = \"Bool\";\n  BuiltinTypeName[BuiltinTypeName[\"String\"] = 2] = \"String\";\n  BuiltinTypeName[BuiltinTypeName[\"Int\"] = 3] = \"Int\";\n  BuiltinTypeName[BuiltinTypeName[\"Number\"] = 4] = \"Number\";\n  BuiltinTypeName[BuiltinTypeName[\"Function\"] = 5] = \"Function\";\n  BuiltinTypeName[BuiltinTypeName[\"Inferred\"] = 6] = \"Inferred\";\n  BuiltinTypeName[BuiltinTypeName[\"None\"] = 7] = \"None\";\n})(BuiltinTypeName || (BuiltinTypeName = {}));\n\nvar BuiltinType = /*#__PURE__*/function (_Type$) {\n  _inherits(BuiltinType, _Type$);\n\n  var _super = _createSuper(BuiltinType);\n\n  function BuiltinType(name, modifiers) {\n    var _this2;\n\n    _classCallCheck(this, BuiltinType);\n\n    _this2 = _super.call(this, modifiers);\n    _this2.name = name;\n    return _this2;\n  }\n\n  _createClass(BuiltinType, [{\n    key: \"visitType\",\n    value: function visitType(visitor, context) {\n      return visitor.visitBuiltinType(this, context);\n    }\n  }]);\n\n  return BuiltinType;\n}(Type$1);\n\nvar ExpressionType = /*#__PURE__*/function (_Type$2) {\n  _inherits(ExpressionType, _Type$2);\n\n  var _super2 = _createSuper(ExpressionType);\n\n  function ExpressionType(value, modifiers) {\n    var _this3;\n\n    var typeParams = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;\n\n    _classCallCheck(this, ExpressionType);\n\n    _this3 = _super2.call(this, modifiers);\n    _this3.value = value;\n    _this3.typeParams = typeParams;\n    return _this3;\n  }\n\n  _createClass(ExpressionType, [{\n    key: \"visitType\",\n    value: function visitType(visitor, context) {\n      return visitor.visitExpressionType(this, context);\n    }\n  }]);\n\n  return ExpressionType;\n}(Type$1);\n\nvar ArrayType = /*#__PURE__*/function (_Type$3) {\n  _inherits(ArrayType, _Type$3);\n\n  var _super3 = _createSuper(ArrayType);\n\n  function ArrayType(of, modifiers) {\n    var _this4;\n\n    _classCallCheck(this, ArrayType);\n\n    _this4 = _super3.call(this, modifiers);\n    _this4.of = of;\n    return _this4;\n  }\n\n  _createClass(ArrayType, [{\n    key: \"visitType\",\n    value: function visitType(visitor, context) {\n      return visitor.visitArrayType(this, context);\n    }\n  }]);\n\n  return ArrayType;\n}(Type$1);\n\nvar MapType = /*#__PURE__*/function (_Type$4) {\n  _inherits(MapType, _Type$4);\n\n  var _super4 = _createSuper(MapType);\n\n  function MapType(valueType, modifiers) {\n    var _this5;\n\n    _classCallCheck(this, MapType);\n\n    _this5 = _super4.call(this, modifiers);\n    _this5.valueType = valueType || null;\n    return _this5;\n  }\n\n  _createClass(MapType, [{\n    key: \"visitType\",\n    value: function visitType(visitor, context) {\n      return visitor.visitMapType(this, context);\n    }\n  }]);\n\n  return MapType;\n}(Type$1);\n\nvar DYNAMIC_TYPE = new BuiltinType(BuiltinTypeName.Dynamic);\nvar INFERRED_TYPE = new BuiltinType(BuiltinTypeName.Inferred);\nvar BOOL_TYPE = new BuiltinType(BuiltinTypeName.Bool);\nvar INT_TYPE = new BuiltinType(BuiltinTypeName.Int);\nvar NUMBER_TYPE = new BuiltinType(BuiltinTypeName.Number);\nvar STRING_TYPE = new BuiltinType(BuiltinTypeName.String);\nvar FUNCTION_TYPE = new BuiltinType(BuiltinTypeName.Function);\nvar NONE_TYPE = new BuiltinType(BuiltinTypeName.None); ///// Expressions\n\nvar UnaryOperator;\n\n(function (UnaryOperator) {\n  UnaryOperator[UnaryOperator[\"Minus\"] = 0] = \"Minus\";\n  UnaryOperator[UnaryOperator[\"Plus\"] = 1] = \"Plus\";\n})(UnaryOperator || (UnaryOperator = {}));\n\nvar BinaryOperator;\n\n(function (BinaryOperator) {\n  BinaryOperator[BinaryOperator[\"Equals\"] = 0] = \"Equals\";\n  BinaryOperator[BinaryOperator[\"NotEquals\"] = 1] = \"NotEquals\";\n  BinaryOperator[BinaryOperator[\"Identical\"] = 2] = \"Identical\";\n  BinaryOperator[BinaryOperator[\"NotIdentical\"] = 3] = \"NotIdentical\";\n  BinaryOperator[BinaryOperator[\"Minus\"] = 4] = \"Minus\";\n  BinaryOperator[BinaryOperator[\"Plus\"] = 5] = \"Plus\";\n  BinaryOperator[BinaryOperator[\"Divide\"] = 6] = \"Divide\";\n  BinaryOperator[BinaryOperator[\"Multiply\"] = 7] = \"Multiply\";\n  BinaryOperator[BinaryOperator[\"Modulo\"] = 8] = \"Modulo\";\n  BinaryOperator[BinaryOperator[\"And\"] = 9] = \"And\";\n  BinaryOperator[BinaryOperator[\"Or\"] = 10] = \"Or\";\n  BinaryOperator[BinaryOperator[\"BitwiseAnd\"] = 11] = \"BitwiseAnd\";\n  BinaryOperator[BinaryOperator[\"Lower\"] = 12] = \"Lower\";\n  BinaryOperator[BinaryOperator[\"LowerEquals\"] = 13] = \"LowerEquals\";\n  BinaryOperator[BinaryOperator[\"Bigger\"] = 14] = \"Bigger\";\n  BinaryOperator[BinaryOperator[\"BiggerEquals\"] = 15] = \"BiggerEquals\";\n})(BinaryOperator || (BinaryOperator = {}));\n\nfunction nullSafeIsEquivalent(base, other) {\n  if (base == null || other == null) {\n    return base == other;\n  }\n\n  return base.isEquivalent(other);\n}\n\nfunction areAllEquivalent(base, other) {\n  var len = base.length;\n\n  if (len !== other.length) {\n    return false;\n  }\n\n  for (var i = 0; i < len; i++) {\n    if (!base[i].isEquivalent(other[i])) {\n      return false;\n    }\n  }\n\n  return true;\n}\n\nvar Expression = /*#__PURE__*/function () {\n  function Expression(type, sourceSpan) {\n    _classCallCheck(this, Expression);\n\n    this.type = type || null;\n    this.sourceSpan = sourceSpan || null;\n  }\n\n  _createClass(Expression, [{\n    key: \"prop\",\n    value: function prop(name, sourceSpan) {\n      return new ReadPropExpr(this, name, null, sourceSpan);\n    }\n  }, {\n    key: \"key\",\n    value: function key(index, type, sourceSpan) {\n      return new ReadKeyExpr(this, index, type, sourceSpan);\n    }\n  }, {\n    key: \"callMethod\",\n    value: function callMethod(name, params, sourceSpan) {\n      return new InvokeMethodExpr(this, name, params, null, sourceSpan);\n    }\n  }, {\n    key: \"callFn\",\n    value: function callFn(params, sourceSpan, pure) {\n      return new InvokeFunctionExpr(this, params, null, sourceSpan, pure);\n    }\n  }, {\n    key: \"instantiate\",\n    value: function instantiate(params, type, sourceSpan) {\n      return new InstantiateExpr(this, params, type, sourceSpan);\n    }\n  }, {\n    key: \"conditional\",\n    value: function conditional(trueCase) {\n      var falseCase = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      var sourceSpan = arguments.length > 2 ? arguments[2] : undefined;\n      return new ConditionalExpr(this, trueCase, falseCase, null, sourceSpan);\n    }\n  }, {\n    key: \"equals\",\n    value: function equals(rhs, sourceSpan) {\n      return new BinaryOperatorExpr(BinaryOperator.Equals, this, rhs, null, sourceSpan);\n    }\n  }, {\n    key: \"notEquals\",\n    value: function notEquals(rhs, sourceSpan) {\n      return new BinaryOperatorExpr(BinaryOperator.NotEquals, this, rhs, null, sourceSpan);\n    }\n  }, {\n    key: \"identical\",\n    value: function identical(rhs, sourceSpan) {\n      return new BinaryOperatorExpr(BinaryOperator.Identical, this, rhs, null, sourceSpan);\n    }\n  }, {\n    key: \"notIdentical\",\n    value: function notIdentical(rhs, sourceSpan) {\n      return new BinaryOperatorExpr(BinaryOperator.NotIdentical, this, rhs, null, sourceSpan);\n    }\n  }, {\n    key: \"minus\",\n    value: function minus(rhs, sourceSpan) {\n      return new BinaryOperatorExpr(BinaryOperator.Minus, this, rhs, null, sourceSpan);\n    }\n  }, {\n    key: \"plus\",\n    value: function plus(rhs, sourceSpan) {\n      return new BinaryOperatorExpr(BinaryOperator.Plus, this, rhs, null, sourceSpan);\n    }\n  }, {\n    key: \"divide\",\n    value: function divide(rhs, sourceSpan) {\n      return new BinaryOperatorExpr(BinaryOperator.Divide, this, rhs, null, sourceSpan);\n    }\n  }, {\n    key: \"multiply\",\n    value: function multiply(rhs, sourceSpan) {\n      return new BinaryOperatorExpr(BinaryOperator.Multiply, this, rhs, null, sourceSpan);\n    }\n  }, {\n    key: \"modulo\",\n    value: function modulo(rhs, sourceSpan) {\n      return new BinaryOperatorExpr(BinaryOperator.Modulo, this, rhs, null, sourceSpan);\n    }\n  }, {\n    key: \"and\",\n    value: function and(rhs, sourceSpan) {\n      return new BinaryOperatorExpr(BinaryOperator.And, this, rhs, null, sourceSpan);\n    }\n  }, {\n    key: \"bitwiseAnd\",\n    value: function bitwiseAnd(rhs, sourceSpan) {\n      var parens = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;\n      return new BinaryOperatorExpr(BinaryOperator.BitwiseAnd, this, rhs, null, sourceSpan, parens);\n    }\n  }, {\n    key: \"or\",\n    value: function or(rhs, sourceSpan) {\n      return new BinaryOperatorExpr(BinaryOperator.Or, this, rhs, null, sourceSpan);\n    }\n  }, {\n    key: \"lower\",\n    value: function lower(rhs, sourceSpan) {\n      return new BinaryOperatorExpr(BinaryOperator.Lower, this, rhs, null, sourceSpan);\n    }\n  }, {\n    key: \"lowerEquals\",\n    value: function lowerEquals(rhs, sourceSpan) {\n      return new BinaryOperatorExpr(BinaryOperator.LowerEquals, this, rhs, null, sourceSpan);\n    }\n  }, {\n    key: \"bigger\",\n    value: function bigger(rhs, sourceSpan) {\n      return new BinaryOperatorExpr(BinaryOperator.Bigger, this, rhs, null, sourceSpan);\n    }\n  }, {\n    key: \"biggerEquals\",\n    value: function biggerEquals(rhs, sourceSpan) {\n      return new BinaryOperatorExpr(BinaryOperator.BiggerEquals, this, rhs, null, sourceSpan);\n    }\n  }, {\n    key: \"isBlank\",\n    value: function isBlank(sourceSpan) {\n      // Note: We use equals by purpose here to compare to null and undefined in JS.\n      // We use the typed null to allow strictNullChecks to narrow types.\n      return this.equals(TYPED_NULL_EXPR, sourceSpan);\n    }\n  }, {\n    key: \"cast\",\n    value: function cast(type, sourceSpan) {\n      return new CastExpr(this, type, sourceSpan);\n    }\n  }, {\n    key: \"toStmt\",\n    value: function toStmt() {\n      return new ExpressionStatement(this, null);\n    }\n  }]);\n\n  return Expression;\n}();\n\nvar BuiltinVar;\n\n(function (BuiltinVar) {\n  BuiltinVar[BuiltinVar[\"This\"] = 0] = \"This\";\n  BuiltinVar[BuiltinVar[\"Super\"] = 1] = \"Super\";\n  BuiltinVar[BuiltinVar[\"CatchError\"] = 2] = \"CatchError\";\n  BuiltinVar[BuiltinVar[\"CatchStack\"] = 3] = \"CatchStack\";\n})(BuiltinVar || (BuiltinVar = {}));\n\nvar ReadVarExpr = /*#__PURE__*/function (_Expression) {\n  _inherits(ReadVarExpr, _Expression);\n\n  var _super5 = _createSuper(ReadVarExpr);\n\n  function ReadVarExpr(name, type, sourceSpan) {\n    var _this6;\n\n    _classCallCheck(this, ReadVarExpr);\n\n    _this6 = _super5.call(this, type, sourceSpan);\n\n    if (typeof name === 'string') {\n      _this6.name = name;\n      _this6.builtin = null;\n    } else {\n      _this6.name = null;\n      _this6.builtin = name;\n    }\n\n    return _this6;\n  }\n\n  _createClass(ReadVarExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof ReadVarExpr && this.name === e.name && this.builtin === e.builtin;\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitReadVarExpr(this, context);\n    }\n  }, {\n    key: \"set\",\n    value: function set(value) {\n      if (!this.name) {\n        throw new Error(\"Built in variable \".concat(this.builtin, \" can not be assigned to.\"));\n      }\n\n      return new WriteVarExpr(this.name, value, null, this.sourceSpan);\n    }\n  }]);\n\n  return ReadVarExpr;\n}(Expression);\n\nvar TypeofExpr = /*#__PURE__*/function (_Expression2) {\n  _inherits(TypeofExpr, _Expression2);\n\n  var _super6 = _createSuper(TypeofExpr);\n\n  function TypeofExpr(expr, type, sourceSpan) {\n    var _this7;\n\n    _classCallCheck(this, TypeofExpr);\n\n    _this7 = _super6.call(this, type, sourceSpan);\n    _this7.expr = expr;\n    return _this7;\n  }\n\n  _createClass(TypeofExpr, [{\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitTypeofExpr(this, context);\n    }\n  }, {\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof TypeofExpr && e.expr.isEquivalent(this.expr);\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return this.expr.isConstant();\n    }\n  }]);\n\n  return TypeofExpr;\n}(Expression);\n\nvar WrappedNodeExpr = /*#__PURE__*/function (_Expression3) {\n  _inherits(WrappedNodeExpr, _Expression3);\n\n  var _super7 = _createSuper(WrappedNodeExpr);\n\n  function WrappedNodeExpr(node, type, sourceSpan) {\n    var _this8;\n\n    _classCallCheck(this, WrappedNodeExpr);\n\n    _this8 = _super7.call(this, type, sourceSpan);\n    _this8.node = node;\n    return _this8;\n  }\n\n  _createClass(WrappedNodeExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof WrappedNodeExpr && this.node === e.node;\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitWrappedNodeExpr(this, context);\n    }\n  }]);\n\n  return WrappedNodeExpr;\n}(Expression);\n\nvar WriteVarExpr = /*#__PURE__*/function (_Expression4) {\n  _inherits(WriteVarExpr, _Expression4);\n\n  var _super8 = _createSuper(WriteVarExpr);\n\n  function WriteVarExpr(name, value, type, sourceSpan) {\n    var _this9;\n\n    _classCallCheck(this, WriteVarExpr);\n\n    _this9 = _super8.call(this, type || value.type, sourceSpan);\n    _this9.name = name;\n    _this9.value = value;\n    return _this9;\n  }\n\n  _createClass(WriteVarExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof WriteVarExpr && this.name === e.name && this.value.isEquivalent(e.value);\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitWriteVarExpr(this, context);\n    }\n  }, {\n    key: \"toDeclStmt\",\n    value: function toDeclStmt(type, modifiers) {\n      return new DeclareVarStmt(this.name, this.value, type, modifiers, this.sourceSpan);\n    }\n  }, {\n    key: \"toConstDecl\",\n    value: function toConstDecl() {\n      return this.toDeclStmt(INFERRED_TYPE, [StmtModifier.Final]);\n    }\n  }]);\n\n  return WriteVarExpr;\n}(Expression);\n\nvar WriteKeyExpr = /*#__PURE__*/function (_Expression5) {\n  _inherits(WriteKeyExpr, _Expression5);\n\n  var _super9 = _createSuper(WriteKeyExpr);\n\n  function WriteKeyExpr(receiver, index, value, type, sourceSpan) {\n    var _this10;\n\n    _classCallCheck(this, WriteKeyExpr);\n\n    _this10 = _super9.call(this, type || value.type, sourceSpan);\n    _this10.receiver = receiver;\n    _this10.index = index;\n    _this10.value = value;\n    return _this10;\n  }\n\n  _createClass(WriteKeyExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof WriteKeyExpr && this.receiver.isEquivalent(e.receiver) && this.index.isEquivalent(e.index) && this.value.isEquivalent(e.value);\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitWriteKeyExpr(this, context);\n    }\n  }]);\n\n  return WriteKeyExpr;\n}(Expression);\n\nvar WritePropExpr = /*#__PURE__*/function (_Expression6) {\n  _inherits(WritePropExpr, _Expression6);\n\n  var _super10 = _createSuper(WritePropExpr);\n\n  function WritePropExpr(receiver, name, value, type, sourceSpan) {\n    var _this11;\n\n    _classCallCheck(this, WritePropExpr);\n\n    _this11 = _super10.call(this, type || value.type, sourceSpan);\n    _this11.receiver = receiver;\n    _this11.name = name;\n    _this11.value = value;\n    return _this11;\n  }\n\n  _createClass(WritePropExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof WritePropExpr && this.receiver.isEquivalent(e.receiver) && this.name === e.name && this.value.isEquivalent(e.value);\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitWritePropExpr(this, context);\n    }\n  }]);\n\n  return WritePropExpr;\n}(Expression);\n\nvar BuiltinMethod;\n\n(function (BuiltinMethod) {\n  BuiltinMethod[BuiltinMethod[\"ConcatArray\"] = 0] = \"ConcatArray\";\n  BuiltinMethod[BuiltinMethod[\"SubscribeObservable\"] = 1] = \"SubscribeObservable\";\n  BuiltinMethod[BuiltinMethod[\"Bind\"] = 2] = \"Bind\";\n})(BuiltinMethod || (BuiltinMethod = {}));\n\nvar InvokeMethodExpr = /*#__PURE__*/function (_Expression7) {\n  _inherits(InvokeMethodExpr, _Expression7);\n\n  var _super11 = _createSuper(InvokeMethodExpr);\n\n  function InvokeMethodExpr(receiver, method, args, type, sourceSpan) {\n    var _this12;\n\n    _classCallCheck(this, InvokeMethodExpr);\n\n    _this12 = _super11.call(this, type, sourceSpan);\n    _this12.receiver = receiver;\n    _this12.args = args;\n\n    if (typeof method === 'string') {\n      _this12.name = method;\n      _this12.builtin = null;\n    } else {\n      _this12.name = null;\n      _this12.builtin = method;\n    }\n\n    return _this12;\n  }\n\n  _createClass(InvokeMethodExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof InvokeMethodExpr && this.receiver.isEquivalent(e.receiver) && this.name === e.name && this.builtin === e.builtin && areAllEquivalent(this.args, e.args);\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitInvokeMethodExpr(this, context);\n    }\n  }]);\n\n  return InvokeMethodExpr;\n}(Expression);\n\nvar InvokeFunctionExpr = /*#__PURE__*/function (_Expression8) {\n  _inherits(InvokeFunctionExpr, _Expression8);\n\n  var _super12 = _createSuper(InvokeFunctionExpr);\n\n  function InvokeFunctionExpr(fn, args, type, sourceSpan) {\n    var _this13;\n\n    var pure = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : false;\n\n    _classCallCheck(this, InvokeFunctionExpr);\n\n    _this13 = _super12.call(this, type, sourceSpan);\n    _this13.fn = fn;\n    _this13.args = args;\n    _this13.pure = pure;\n    return _this13;\n  }\n\n  _createClass(InvokeFunctionExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof InvokeFunctionExpr && this.fn.isEquivalent(e.fn) && areAllEquivalent(this.args, e.args) && this.pure === e.pure;\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitInvokeFunctionExpr(this, context);\n    }\n  }]);\n\n  return InvokeFunctionExpr;\n}(Expression);\n\nvar InstantiateExpr = /*#__PURE__*/function (_Expression9) {\n  _inherits(InstantiateExpr, _Expression9);\n\n  var _super13 = _createSuper(InstantiateExpr);\n\n  function InstantiateExpr(classExpr, args, type, sourceSpan) {\n    var _this14;\n\n    _classCallCheck(this, InstantiateExpr);\n\n    _this14 = _super13.call(this, type, sourceSpan);\n    _this14.classExpr = classExpr;\n    _this14.args = args;\n    return _this14;\n  }\n\n  _createClass(InstantiateExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof InstantiateExpr && this.classExpr.isEquivalent(e.classExpr) && areAllEquivalent(this.args, e.args);\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitInstantiateExpr(this, context);\n    }\n  }]);\n\n  return InstantiateExpr;\n}(Expression);\n\nvar LiteralExpr = /*#__PURE__*/function (_Expression10) {\n  _inherits(LiteralExpr, _Expression10);\n\n  var _super14 = _createSuper(LiteralExpr);\n\n  function LiteralExpr(value, type, sourceSpan) {\n    var _this15;\n\n    _classCallCheck(this, LiteralExpr);\n\n    _this15 = _super14.call(this, type, sourceSpan);\n    _this15.value = value;\n    return _this15;\n  }\n\n  _createClass(LiteralExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof LiteralExpr && this.value === e.value;\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return true;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitLiteralExpr(this, context);\n    }\n  }]);\n\n  return LiteralExpr;\n}(Expression);\n\nvar MessagePiece = /*#__PURE__*/_createClass(function MessagePiece(text, sourceSpan) {\n  _classCallCheck(this, MessagePiece);\n\n  this.text = text;\n  this.sourceSpan = sourceSpan;\n});\n\nvar LiteralPiece = /*#__PURE__*/function (_MessagePiece) {\n  _inherits(LiteralPiece, _MessagePiece);\n\n  var _super15 = _createSuper(LiteralPiece);\n\n  function LiteralPiece() {\n    _classCallCheck(this, LiteralPiece);\n\n    return _super15.apply(this, arguments);\n  }\n\n  return _createClass(LiteralPiece);\n}(MessagePiece);\n\nvar PlaceholderPiece = /*#__PURE__*/function (_MessagePiece2) {\n  _inherits(PlaceholderPiece, _MessagePiece2);\n\n  var _super16 = _createSuper(PlaceholderPiece);\n\n  function PlaceholderPiece() {\n    _classCallCheck(this, PlaceholderPiece);\n\n    return _super16.apply(this, arguments);\n  }\n\n  return _createClass(PlaceholderPiece);\n}(MessagePiece);\n\nvar LocalizedString = /*#__PURE__*/function (_Expression11) {\n  _inherits(LocalizedString, _Expression11);\n\n  var _super17 = _createSuper(LocalizedString);\n\n  function LocalizedString(metaBlock, messageParts, placeHolderNames, expressions, sourceSpan) {\n    var _this16;\n\n    _classCallCheck(this, LocalizedString);\n\n    _this16 = _super17.call(this, STRING_TYPE, sourceSpan);\n    _this16.metaBlock = metaBlock;\n    _this16.messageParts = messageParts;\n    _this16.placeHolderNames = placeHolderNames;\n    _this16.expressions = expressions;\n    return _this16;\n  }\n\n  _createClass(LocalizedString, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      // return e instanceof LocalizedString && this.message === e.message;\n      return false;\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitLocalizedString(this, context);\n    }\n    /**\n     * Serialize the given `meta` and `messagePart` into \"cooked\" and \"raw\" strings that can be used\n     * in a `$localize` tagged string. The format of the metadata is the same as that parsed by\n     * `parseI18nMeta()`.\n     *\n     * @param meta The metadata to serialize\n     * @param messagePart The first part of the tagged string\n     */\n\n  }, {\n    key: \"serializeI18nHead\",\n    value: function serializeI18nHead() {\n      var MEANING_SEPARATOR = '|';\n      var ID_SEPARATOR = '@@';\n      var LEGACY_ID_INDICATOR = '␟';\n      var metaBlock = this.metaBlock.description || '';\n\n      if (this.metaBlock.meaning) {\n        metaBlock = \"\".concat(this.metaBlock.meaning).concat(MEANING_SEPARATOR).concat(metaBlock);\n      }\n\n      if (this.metaBlock.customId) {\n        metaBlock = \"\".concat(metaBlock).concat(ID_SEPARATOR).concat(this.metaBlock.customId);\n      }\n\n      if (this.metaBlock.legacyIds) {\n        this.metaBlock.legacyIds.forEach(function (legacyId) {\n          metaBlock = \"\".concat(metaBlock).concat(LEGACY_ID_INDICATOR).concat(legacyId);\n        });\n      }\n\n      return createCookedRawString(metaBlock, this.messageParts[0].text, this.getMessagePartSourceSpan(0));\n    }\n  }, {\n    key: \"getMessagePartSourceSpan\",\n    value: function getMessagePartSourceSpan(i) {\n      var _a, _b;\n\n      return (_b = (_a = this.messageParts[i]) === null || _a === void 0 ? void 0 : _a.sourceSpan) !== null && _b !== void 0 ? _b : this.sourceSpan;\n    }\n  }, {\n    key: \"getPlaceholderSourceSpan\",\n    value: function getPlaceholderSourceSpan(i) {\n      var _a, _b, _c, _d;\n\n      return (_d = (_b = (_a = this.placeHolderNames[i]) === null || _a === void 0 ? void 0 : _a.sourceSpan) !== null && _b !== void 0 ? _b : (_c = this.expressions[i]) === null || _c === void 0 ? void 0 : _c.sourceSpan) !== null && _d !== void 0 ? _d : this.sourceSpan;\n    }\n    /**\n     * Serialize the given `placeholderName` and `messagePart` into \"cooked\" and \"raw\" strings that\n     * can be used in a `$localize` tagged string.\n     *\n     * @param placeholderName The placeholder name to serialize\n     * @param messagePart The following message string after this placeholder\n     */\n\n  }, {\n    key: \"serializeI18nTemplatePart\",\n    value: function serializeI18nTemplatePart(partIndex) {\n      var placeholderName = this.placeHolderNames[partIndex - 1].text;\n      var messagePart = this.messageParts[partIndex];\n      return createCookedRawString(placeholderName, messagePart.text, this.getMessagePartSourceSpan(partIndex));\n    }\n  }]);\n\n  return LocalizedString;\n}(Expression);\n\nvar escapeSlashes = function escapeSlashes(str) {\n  return str.replace(/\\\\/g, '\\\\\\\\');\n};\n\nvar escapeStartingColon = function escapeStartingColon(str) {\n  return str.replace(/^:/, '\\\\:');\n};\n\nvar escapeColons = function escapeColons(str) {\n  return str.replace(/:/g, '\\\\:');\n};\n\nvar escapeForMessagePart = function escapeForMessagePart(str) {\n  return str.replace(/`/g, '\\\\`').replace(/\\${/g, '$\\\\{');\n};\n/**\n * Creates a `{cooked, raw}` object from the `metaBlock` and `messagePart`.\n *\n * The `raw` text must have various character sequences escaped:\n * * \"\\\" would otherwise indicate that the next character is a control character.\n * * \"`\" and \"${\" are template string control sequences that would otherwise prematurely indicate\n *   the end of a message part.\n * * \":\" inside a metablock would prematurely indicate the end of the metablock.\n * * \":\" at the start of a messagePart with no metablock would erroneously indicate the start of a\n *   metablock.\n *\n * @param metaBlock Any metadata that should be prepended to the string\n * @param messagePart The message part of the string\n */\n\n\nfunction createCookedRawString(metaBlock, messagePart, range) {\n  if (metaBlock === '') {\n    return {\n      cooked: messagePart,\n      raw: escapeForMessagePart(escapeStartingColon(escapeSlashes(messagePart))),\n      range: range\n    };\n  } else {\n    return {\n      cooked: \":\".concat(metaBlock, \":\").concat(messagePart),\n      raw: escapeForMessagePart(\":\".concat(escapeColons(escapeSlashes(metaBlock)), \":\").concat(escapeSlashes(messagePart))),\n      range: range\n    };\n  }\n}\n\nvar ExternalExpr = /*#__PURE__*/function (_Expression12) {\n  _inherits(ExternalExpr, _Expression12);\n\n  var _super18 = _createSuper(ExternalExpr);\n\n  function ExternalExpr(value, type) {\n    var _this17;\n\n    var typeParams = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;\n    var sourceSpan = arguments.length > 3 ? arguments[3] : undefined;\n\n    _classCallCheck(this, ExternalExpr);\n\n    _this17 = _super18.call(this, type, sourceSpan);\n    _this17.value = value;\n    _this17.typeParams = typeParams;\n    return _this17;\n  }\n\n  _createClass(ExternalExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof ExternalExpr && this.value.name === e.value.name && this.value.moduleName === e.value.moduleName && this.value.runtime === e.value.runtime;\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitExternalExpr(this, context);\n    }\n  }]);\n\n  return ExternalExpr;\n}(Expression);\n\nvar ExternalReference = /*#__PURE__*/_createClass(function ExternalReference(moduleName, name, runtime) {\n  _classCallCheck(this, ExternalReference);\n\n  this.moduleName = moduleName;\n  this.name = name;\n  this.runtime = runtime;\n});\n\nvar ConditionalExpr = /*#__PURE__*/function (_Expression13) {\n  _inherits(ConditionalExpr, _Expression13);\n\n  var _super19 = _createSuper(ConditionalExpr);\n\n  function ConditionalExpr(condition, trueCase) {\n    var _this18;\n\n    var falseCase = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;\n    var type = arguments.length > 3 ? arguments[3] : undefined;\n    var sourceSpan = arguments.length > 4 ? arguments[4] : undefined;\n\n    _classCallCheck(this, ConditionalExpr);\n\n    _this18 = _super19.call(this, type || trueCase.type, sourceSpan);\n    _this18.condition = condition;\n    _this18.falseCase = falseCase;\n    _this18.trueCase = trueCase;\n    return _this18;\n  }\n\n  _createClass(ConditionalExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof ConditionalExpr && this.condition.isEquivalent(e.condition) && this.trueCase.isEquivalent(e.trueCase) && nullSafeIsEquivalent(this.falseCase, e.falseCase);\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitConditionalExpr(this, context);\n    }\n  }]);\n\n  return ConditionalExpr;\n}(Expression);\n\nvar NotExpr = /*#__PURE__*/function (_Expression14) {\n  _inherits(NotExpr, _Expression14);\n\n  var _super20 = _createSuper(NotExpr);\n\n  function NotExpr(condition, sourceSpan) {\n    var _this19;\n\n    _classCallCheck(this, NotExpr);\n\n    _this19 = _super20.call(this, BOOL_TYPE, sourceSpan);\n    _this19.condition = condition;\n    return _this19;\n  }\n\n  _createClass(NotExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof NotExpr && this.condition.isEquivalent(e.condition);\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitNotExpr(this, context);\n    }\n  }]);\n\n  return NotExpr;\n}(Expression);\n\nvar AssertNotNull = /*#__PURE__*/function (_Expression15) {\n  _inherits(AssertNotNull, _Expression15);\n\n  var _super21 = _createSuper(AssertNotNull);\n\n  function AssertNotNull(condition, sourceSpan) {\n    var _this20;\n\n    _classCallCheck(this, AssertNotNull);\n\n    _this20 = _super21.call(this, condition.type, sourceSpan);\n    _this20.condition = condition;\n    return _this20;\n  }\n\n  _createClass(AssertNotNull, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof AssertNotNull && this.condition.isEquivalent(e.condition);\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitAssertNotNullExpr(this, context);\n    }\n  }]);\n\n  return AssertNotNull;\n}(Expression);\n\nvar CastExpr = /*#__PURE__*/function (_Expression16) {\n  _inherits(CastExpr, _Expression16);\n\n  var _super22 = _createSuper(CastExpr);\n\n  function CastExpr(value, type, sourceSpan) {\n    var _this21;\n\n    _classCallCheck(this, CastExpr);\n\n    _this21 = _super22.call(this, type, sourceSpan);\n    _this21.value = value;\n    return _this21;\n  }\n\n  _createClass(CastExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof CastExpr && this.value.isEquivalent(e.value);\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitCastExpr(this, context);\n    }\n  }]);\n\n  return CastExpr;\n}(Expression);\n\nvar FnParam = /*#__PURE__*/function () {\n  function FnParam(name) {\n    var type = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n\n    _classCallCheck(this, FnParam);\n\n    this.name = name;\n    this.type = type;\n  }\n\n  _createClass(FnParam, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(param) {\n      return this.name === param.name;\n    }\n  }]);\n\n  return FnParam;\n}();\n\nvar FunctionExpr = /*#__PURE__*/function (_Expression17) {\n  _inherits(FunctionExpr, _Expression17);\n\n  var _super23 = _createSuper(FunctionExpr);\n\n  function FunctionExpr(params, statements, type, sourceSpan, name) {\n    var _this22;\n\n    _classCallCheck(this, FunctionExpr);\n\n    _this22 = _super23.call(this, type, sourceSpan);\n    _this22.params = params;\n    _this22.statements = statements;\n    _this22.name = name;\n    return _this22;\n  }\n\n  _createClass(FunctionExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof FunctionExpr && areAllEquivalent(this.params, e.params) && areAllEquivalent(this.statements, e.statements);\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitFunctionExpr(this, context);\n    }\n  }, {\n    key: \"toDeclStmt\",\n    value: function toDeclStmt(name, modifiers) {\n      return new DeclareFunctionStmt(name, this.params, this.statements, this.type, modifiers, this.sourceSpan);\n    }\n  }]);\n\n  return FunctionExpr;\n}(Expression);\n\nvar UnaryOperatorExpr = /*#__PURE__*/function (_Expression18) {\n  _inherits(UnaryOperatorExpr, _Expression18);\n\n  var _super24 = _createSuper(UnaryOperatorExpr);\n\n  function UnaryOperatorExpr(operator, expr, type, sourceSpan) {\n    var _this23;\n\n    var parens = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : true;\n\n    _classCallCheck(this, UnaryOperatorExpr);\n\n    _this23 = _super24.call(this, type || NUMBER_TYPE, sourceSpan);\n    _this23.operator = operator;\n    _this23.expr = expr;\n    _this23.parens = parens;\n    return _this23;\n  }\n\n  _createClass(UnaryOperatorExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof UnaryOperatorExpr && this.operator === e.operator && this.expr.isEquivalent(e.expr);\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitUnaryOperatorExpr(this, context);\n    }\n  }]);\n\n  return UnaryOperatorExpr;\n}(Expression);\n\nvar BinaryOperatorExpr = /*#__PURE__*/function (_Expression19) {\n  _inherits(BinaryOperatorExpr, _Expression19);\n\n  var _super25 = _createSuper(BinaryOperatorExpr);\n\n  function BinaryOperatorExpr(operator, lhs, rhs, type, sourceSpan) {\n    var _this24;\n\n    var parens = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : true;\n\n    _classCallCheck(this, BinaryOperatorExpr);\n\n    _this24 = _super25.call(this, type || lhs.type, sourceSpan);\n    _this24.operator = operator;\n    _this24.rhs = rhs;\n    _this24.parens = parens;\n    _this24.lhs = lhs;\n    return _this24;\n  }\n\n  _createClass(BinaryOperatorExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof BinaryOperatorExpr && this.operator === e.operator && this.lhs.isEquivalent(e.lhs) && this.rhs.isEquivalent(e.rhs);\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitBinaryOperatorExpr(this, context);\n    }\n  }]);\n\n  return BinaryOperatorExpr;\n}(Expression);\n\nvar ReadPropExpr = /*#__PURE__*/function (_Expression20) {\n  _inherits(ReadPropExpr, _Expression20);\n\n  var _super26 = _createSuper(ReadPropExpr);\n\n  function ReadPropExpr(receiver, name, type, sourceSpan) {\n    var _this25;\n\n    _classCallCheck(this, ReadPropExpr);\n\n    _this25 = _super26.call(this, type, sourceSpan);\n    _this25.receiver = receiver;\n    _this25.name = name;\n    return _this25;\n  }\n\n  _createClass(ReadPropExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof ReadPropExpr && this.receiver.isEquivalent(e.receiver) && this.name === e.name;\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitReadPropExpr(this, context);\n    }\n  }, {\n    key: \"set\",\n    value: function set(value) {\n      return new WritePropExpr(this.receiver, this.name, value, null, this.sourceSpan);\n    }\n  }]);\n\n  return ReadPropExpr;\n}(Expression);\n\nvar ReadKeyExpr = /*#__PURE__*/function (_Expression21) {\n  _inherits(ReadKeyExpr, _Expression21);\n\n  var _super27 = _createSuper(ReadKeyExpr);\n\n  function ReadKeyExpr(receiver, index, type, sourceSpan) {\n    var _this26;\n\n    _classCallCheck(this, ReadKeyExpr);\n\n    _this26 = _super27.call(this, type, sourceSpan);\n    _this26.receiver = receiver;\n    _this26.index = index;\n    return _this26;\n  }\n\n  _createClass(ReadKeyExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof ReadKeyExpr && this.receiver.isEquivalent(e.receiver) && this.index.isEquivalent(e.index);\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitReadKeyExpr(this, context);\n    }\n  }, {\n    key: \"set\",\n    value: function set(value) {\n      return new WriteKeyExpr(this.receiver, this.index, value, null, this.sourceSpan);\n    }\n  }]);\n\n  return ReadKeyExpr;\n}(Expression);\n\nvar LiteralArrayExpr = /*#__PURE__*/function (_Expression22) {\n  _inherits(LiteralArrayExpr, _Expression22);\n\n  var _super28 = _createSuper(LiteralArrayExpr);\n\n  function LiteralArrayExpr(entries, type, sourceSpan) {\n    var _this27;\n\n    _classCallCheck(this, LiteralArrayExpr);\n\n    _this27 = _super28.call(this, type, sourceSpan);\n    _this27.entries = entries;\n    return _this27;\n  }\n\n  _createClass(LiteralArrayExpr, [{\n    key: \"isConstant\",\n    value: function isConstant() {\n      return this.entries.every(function (e) {\n        return e.isConstant();\n      });\n    }\n  }, {\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof LiteralArrayExpr && areAllEquivalent(this.entries, e.entries);\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitLiteralArrayExpr(this, context);\n    }\n  }]);\n\n  return LiteralArrayExpr;\n}(Expression);\n\nvar LiteralMapEntry = /*#__PURE__*/function () {\n  function LiteralMapEntry(key, value, quoted) {\n    _classCallCheck(this, LiteralMapEntry);\n\n    this.key = key;\n    this.value = value;\n    this.quoted = quoted;\n  }\n\n  _createClass(LiteralMapEntry, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return this.key === e.key && this.value.isEquivalent(e.value);\n    }\n  }]);\n\n  return LiteralMapEntry;\n}();\n\nvar LiteralMapExpr = /*#__PURE__*/function (_Expression23) {\n  _inherits(LiteralMapExpr, _Expression23);\n\n  var _super29 = _createSuper(LiteralMapExpr);\n\n  function LiteralMapExpr(entries, type, sourceSpan) {\n    var _this28;\n\n    _classCallCheck(this, LiteralMapExpr);\n\n    _this28 = _super29.call(this, type, sourceSpan);\n    _this28.entries = entries;\n    _this28.valueType = null;\n\n    if (type) {\n      _this28.valueType = type.valueType;\n    }\n\n    return _this28;\n  }\n\n  _createClass(LiteralMapExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof LiteralMapExpr && areAllEquivalent(this.entries, e.entries);\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return this.entries.every(function (e) {\n        return e.value.isConstant();\n      });\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitLiteralMapExpr(this, context);\n    }\n  }]);\n\n  return LiteralMapExpr;\n}(Expression);\n\nvar CommaExpr = /*#__PURE__*/function (_Expression24) {\n  _inherits(CommaExpr, _Expression24);\n\n  var _super30 = _createSuper(CommaExpr);\n\n  function CommaExpr(parts, sourceSpan) {\n    var _this29;\n\n    _classCallCheck(this, CommaExpr);\n\n    _this29 = _super30.call(this, parts[parts.length - 1].type, sourceSpan);\n    _this29.parts = parts;\n    return _this29;\n  }\n\n  _createClass(CommaExpr, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof CommaExpr && areAllEquivalent(this.parts, e.parts);\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return false;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      return visitor.visitCommaExpr(this, context);\n    }\n  }]);\n\n  return CommaExpr;\n}(Expression);\n\nvar THIS_EXPR = new ReadVarExpr(BuiltinVar.This, null, null);\nvar SUPER_EXPR = new ReadVarExpr(BuiltinVar.Super, null, null);\nvar CATCH_ERROR_VAR = new ReadVarExpr(BuiltinVar.CatchError, null, null);\nvar CATCH_STACK_VAR = new ReadVarExpr(BuiltinVar.CatchStack, null, null);\nvar NULL_EXPR = new LiteralExpr(null, null, null);\nvar TYPED_NULL_EXPR = new LiteralExpr(null, INFERRED_TYPE, null); //// Statements\n\nvar StmtModifier;\n\n(function (StmtModifier) {\n  StmtModifier[StmtModifier[\"Final\"] = 0] = \"Final\";\n  StmtModifier[StmtModifier[\"Private\"] = 1] = \"Private\";\n  StmtModifier[StmtModifier[\"Exported\"] = 2] = \"Exported\";\n  StmtModifier[StmtModifier[\"Static\"] = 3] = \"Static\";\n})(StmtModifier || (StmtModifier = {}));\n\nvar LeadingComment = /*#__PURE__*/function () {\n  function LeadingComment(text, multiline, trailingNewline) {\n    _classCallCheck(this, LeadingComment);\n\n    this.text = text;\n    this.multiline = multiline;\n    this.trailingNewline = trailingNewline;\n  }\n\n  _createClass(LeadingComment, [{\n    key: \"toString\",\n    value: function toString() {\n      return this.multiline ? \" \".concat(this.text, \" \") : this.text;\n    }\n  }]);\n\n  return LeadingComment;\n}();\n\nvar JSDocComment = /*#__PURE__*/function (_LeadingComment) {\n  _inherits(JSDocComment, _LeadingComment);\n\n  var _super31 = _createSuper(JSDocComment);\n\n  function JSDocComment(tags) {\n    var _this30;\n\n    _classCallCheck(this, JSDocComment);\n\n    _this30 = _super31.call(this, '',\n    /* multiline */\n    true,\n    /* trailingNewline */\n    true);\n    _this30.tags = tags;\n    return _this30;\n  }\n\n  _createClass(JSDocComment, [{\n    key: \"toString\",\n    value: function toString() {\n      return serializeTags(this.tags);\n    }\n  }]);\n\n  return JSDocComment;\n}(LeadingComment);\n\nvar Statement = /*#__PURE__*/function () {\n  function Statement() {\n    var modifiers = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];\n    var sourceSpan = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n    var leadingComments = arguments.length > 2 ? arguments[2] : undefined;\n\n    _classCallCheck(this, Statement);\n\n    this.modifiers = modifiers;\n    this.sourceSpan = sourceSpan;\n    this.leadingComments = leadingComments;\n  }\n\n  _createClass(Statement, [{\n    key: \"hasModifier\",\n    value: function hasModifier(modifier) {\n      return this.modifiers.indexOf(modifier) !== -1;\n    }\n  }, {\n    key: \"addLeadingComment\",\n    value: function addLeadingComment(leadingComment) {\n      var _a;\n\n      this.leadingComments = (_a = this.leadingComments) !== null && _a !== void 0 ? _a : [];\n      this.leadingComments.push(leadingComment);\n    }\n  }]);\n\n  return Statement;\n}();\n\nvar DeclareVarStmt = /*#__PURE__*/function (_Statement) {\n  _inherits(DeclareVarStmt, _Statement);\n\n  var _super32 = _createSuper(DeclareVarStmt);\n\n  function DeclareVarStmt(name, value, type, modifiers, sourceSpan, leadingComments) {\n    var _this31;\n\n    _classCallCheck(this, DeclareVarStmt);\n\n    _this31 = _super32.call(this, modifiers, sourceSpan, leadingComments);\n    _this31.name = name;\n    _this31.value = value;\n    _this31.type = type || value && value.type || null;\n    return _this31;\n  }\n\n  _createClass(DeclareVarStmt, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(stmt) {\n      return stmt instanceof DeclareVarStmt && this.name === stmt.name && (this.value ? !!stmt.value && this.value.isEquivalent(stmt.value) : !stmt.value);\n    }\n  }, {\n    key: \"visitStatement\",\n    value: function visitStatement(visitor, context) {\n      return visitor.visitDeclareVarStmt(this, context);\n    }\n  }]);\n\n  return DeclareVarStmt;\n}(Statement);\n\nvar DeclareFunctionStmt = /*#__PURE__*/function (_Statement2) {\n  _inherits(DeclareFunctionStmt, _Statement2);\n\n  var _super33 = _createSuper(DeclareFunctionStmt);\n\n  function DeclareFunctionStmt(name, params, statements, type, modifiers, sourceSpan, leadingComments) {\n    var _this32;\n\n    _classCallCheck(this, DeclareFunctionStmt);\n\n    _this32 = _super33.call(this, modifiers, sourceSpan, leadingComments);\n    _this32.name = name;\n    _this32.params = params;\n    _this32.statements = statements;\n    _this32.type = type || null;\n    return _this32;\n  }\n\n  _createClass(DeclareFunctionStmt, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(stmt) {\n      return stmt instanceof DeclareFunctionStmt && areAllEquivalent(this.params, stmt.params) && areAllEquivalent(this.statements, stmt.statements);\n    }\n  }, {\n    key: \"visitStatement\",\n    value: function visitStatement(visitor, context) {\n      return visitor.visitDeclareFunctionStmt(this, context);\n    }\n  }]);\n\n  return DeclareFunctionStmt;\n}(Statement);\n\nvar ExpressionStatement = /*#__PURE__*/function (_Statement3) {\n  _inherits(ExpressionStatement, _Statement3);\n\n  var _super34 = _createSuper(ExpressionStatement);\n\n  function ExpressionStatement(expr, sourceSpan, leadingComments) {\n    var _this33;\n\n    _classCallCheck(this, ExpressionStatement);\n\n    _this33 = _super34.call(this, [], sourceSpan, leadingComments);\n    _this33.expr = expr;\n    return _this33;\n  }\n\n  _createClass(ExpressionStatement, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(stmt) {\n      return stmt instanceof ExpressionStatement && this.expr.isEquivalent(stmt.expr);\n    }\n  }, {\n    key: \"visitStatement\",\n    value: function visitStatement(visitor, context) {\n      return visitor.visitExpressionStmt(this, context);\n    }\n  }]);\n\n  return ExpressionStatement;\n}(Statement);\n\nvar ReturnStatement = /*#__PURE__*/function (_Statement4) {\n  _inherits(ReturnStatement, _Statement4);\n\n  var _super35 = _createSuper(ReturnStatement);\n\n  function ReturnStatement(value) {\n    var _this34;\n\n    var sourceSpan = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n    var leadingComments = arguments.length > 2 ? arguments[2] : undefined;\n\n    _classCallCheck(this, ReturnStatement);\n\n    _this34 = _super35.call(this, [], sourceSpan, leadingComments);\n    _this34.value = value;\n    return _this34;\n  }\n\n  _createClass(ReturnStatement, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(stmt) {\n      return stmt instanceof ReturnStatement && this.value.isEquivalent(stmt.value);\n    }\n  }, {\n    key: \"visitStatement\",\n    value: function visitStatement(visitor, context) {\n      return visitor.visitReturnStmt(this, context);\n    }\n  }]);\n\n  return ReturnStatement;\n}(Statement);\n\nvar AbstractClassPart = /*#__PURE__*/function () {\n  function AbstractClassPart() {\n    var type = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;\n    var modifiers = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];\n\n    _classCallCheck(this, AbstractClassPart);\n\n    this.type = type;\n    this.modifiers = modifiers;\n  }\n\n  _createClass(AbstractClassPart, [{\n    key: \"hasModifier\",\n    value: function hasModifier(modifier) {\n      return this.modifiers.indexOf(modifier) !== -1;\n    }\n  }]);\n\n  return AbstractClassPart;\n}();\n\nvar ClassField = /*#__PURE__*/function (_AbstractClassPart) {\n  _inherits(ClassField, _AbstractClassPart);\n\n  var _super36 = _createSuper(ClassField);\n\n  function ClassField(name, type, modifiers, initializer) {\n    var _this35;\n\n    _classCallCheck(this, ClassField);\n\n    _this35 = _super36.call(this, type, modifiers);\n    _this35.name = name;\n    _this35.initializer = initializer;\n    return _this35;\n  }\n\n  _createClass(ClassField, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(f) {\n      return this.name === f.name;\n    }\n  }]);\n\n  return ClassField;\n}(AbstractClassPart);\n\nvar ClassMethod = /*#__PURE__*/function (_AbstractClassPart2) {\n  _inherits(ClassMethod, _AbstractClassPart2);\n\n  var _super37 = _createSuper(ClassMethod);\n\n  function ClassMethod(name, params, body, type, modifiers) {\n    var _this36;\n\n    _classCallCheck(this, ClassMethod);\n\n    _this36 = _super37.call(this, type, modifiers);\n    _this36.name = name;\n    _this36.params = params;\n    _this36.body = body;\n    return _this36;\n  }\n\n  _createClass(ClassMethod, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(m) {\n      return this.name === m.name && areAllEquivalent(this.body, m.body);\n    }\n  }]);\n\n  return ClassMethod;\n}(AbstractClassPart);\n\nvar ClassGetter = /*#__PURE__*/function (_AbstractClassPart3) {\n  _inherits(ClassGetter, _AbstractClassPart3);\n\n  var _super38 = _createSuper(ClassGetter);\n\n  function ClassGetter(name, body, type, modifiers) {\n    var _this37;\n\n    _classCallCheck(this, ClassGetter);\n\n    _this37 = _super38.call(this, type, modifiers);\n    _this37.name = name;\n    _this37.body = body;\n    return _this37;\n  }\n\n  _createClass(ClassGetter, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(m) {\n      return this.name === m.name && areAllEquivalent(this.body, m.body);\n    }\n  }]);\n\n  return ClassGetter;\n}(AbstractClassPart);\n\nvar ClassStmt = /*#__PURE__*/function (_Statement5) {\n  _inherits(ClassStmt, _Statement5);\n\n  var _super39 = _createSuper(ClassStmt);\n\n  function ClassStmt(name, parent, fields, getters, constructorMethod, methods, modifiers, sourceSpan, leadingComments) {\n    var _this38;\n\n    _classCallCheck(this, ClassStmt);\n\n    _this38 = _super39.call(this, modifiers, sourceSpan, leadingComments);\n    _this38.name = name;\n    _this38.parent = parent;\n    _this38.fields = fields;\n    _this38.getters = getters;\n    _this38.constructorMethod = constructorMethod;\n    _this38.methods = methods;\n    return _this38;\n  }\n\n  _createClass(ClassStmt, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(stmt) {\n      return stmt instanceof ClassStmt && this.name === stmt.name && nullSafeIsEquivalent(this.parent, stmt.parent) && areAllEquivalent(this.fields, stmt.fields) && areAllEquivalent(this.getters, stmt.getters) && this.constructorMethod.isEquivalent(stmt.constructorMethod) && areAllEquivalent(this.methods, stmt.methods);\n    }\n  }, {\n    key: \"visitStatement\",\n    value: function visitStatement(visitor, context) {\n      return visitor.visitDeclareClassStmt(this, context);\n    }\n  }]);\n\n  return ClassStmt;\n}(Statement);\n\nvar IfStmt = /*#__PURE__*/function (_Statement6) {\n  _inherits(IfStmt, _Statement6);\n\n  var _super40 = _createSuper(IfStmt);\n\n  function IfStmt(condition, trueCase) {\n    var _this39;\n\n    var falseCase = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [];\n    var sourceSpan = arguments.length > 3 ? arguments[3] : undefined;\n    var leadingComments = arguments.length > 4 ? arguments[4] : undefined;\n\n    _classCallCheck(this, IfStmt);\n\n    _this39 = _super40.call(this, [], sourceSpan, leadingComments);\n    _this39.condition = condition;\n    _this39.trueCase = trueCase;\n    _this39.falseCase = falseCase;\n    return _this39;\n  }\n\n  _createClass(IfStmt, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(stmt) {\n      return stmt instanceof IfStmt && this.condition.isEquivalent(stmt.condition) && areAllEquivalent(this.trueCase, stmt.trueCase) && areAllEquivalent(this.falseCase, stmt.falseCase);\n    }\n  }, {\n    key: \"visitStatement\",\n    value: function visitStatement(visitor, context) {\n      return visitor.visitIfStmt(this, context);\n    }\n  }]);\n\n  return IfStmt;\n}(Statement);\n\nvar TryCatchStmt = /*#__PURE__*/function (_Statement7) {\n  _inherits(TryCatchStmt, _Statement7);\n\n  var _super41 = _createSuper(TryCatchStmt);\n\n  function TryCatchStmt(bodyStmts, catchStmts) {\n    var _this40;\n\n    var sourceSpan = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;\n    var leadingComments = arguments.length > 3 ? arguments[3] : undefined;\n\n    _classCallCheck(this, TryCatchStmt);\n\n    _this40 = _super41.call(this, [], sourceSpan, leadingComments);\n    _this40.bodyStmts = bodyStmts;\n    _this40.catchStmts = catchStmts;\n    return _this40;\n  }\n\n  _createClass(TryCatchStmt, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(stmt) {\n      return stmt instanceof TryCatchStmt && areAllEquivalent(this.bodyStmts, stmt.bodyStmts) && areAllEquivalent(this.catchStmts, stmt.catchStmts);\n    }\n  }, {\n    key: \"visitStatement\",\n    value: function visitStatement(visitor, context) {\n      return visitor.visitTryCatchStmt(this, context);\n    }\n  }]);\n\n  return TryCatchStmt;\n}(Statement);\n\nvar ThrowStmt = /*#__PURE__*/function (_Statement8) {\n  _inherits(ThrowStmt, _Statement8);\n\n  var _super42 = _createSuper(ThrowStmt);\n\n  function ThrowStmt(error) {\n    var _this41;\n\n    var sourceSpan = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n    var leadingComments = arguments.length > 2 ? arguments[2] : undefined;\n\n    _classCallCheck(this, ThrowStmt);\n\n    _this41 = _super42.call(this, [], sourceSpan, leadingComments);\n    _this41.error = error;\n    return _this41;\n  }\n\n  _createClass(ThrowStmt, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(stmt) {\n      return stmt instanceof TryCatchStmt && this.error.isEquivalent(stmt.error);\n    }\n  }, {\n    key: \"visitStatement\",\n    value: function visitStatement(visitor, context) {\n      return visitor.visitThrowStmt(this, context);\n    }\n  }]);\n\n  return ThrowStmt;\n}(Statement);\n\nvar AstTransformer = /*#__PURE__*/function () {\n  function AstTransformer() {\n    _classCallCheck(this, AstTransformer);\n  }\n\n  _createClass(AstTransformer, [{\n    key: \"transformExpr\",\n    value: function transformExpr(expr, context) {\n      return expr;\n    }\n  }, {\n    key: \"transformStmt\",\n    value: function transformStmt(stmt, context) {\n      return stmt;\n    }\n  }, {\n    key: \"visitReadVarExpr\",\n    value: function visitReadVarExpr(ast, context) {\n      return this.transformExpr(ast, context);\n    }\n  }, {\n    key: \"visitWrappedNodeExpr\",\n    value: function visitWrappedNodeExpr(ast, context) {\n      return this.transformExpr(ast, context);\n    }\n  }, {\n    key: \"visitTypeofExpr\",\n    value: function visitTypeofExpr(expr, context) {\n      return this.transformExpr(new TypeofExpr(expr.expr.visitExpression(this, context), expr.type, expr.sourceSpan), context);\n    }\n  }, {\n    key: \"visitWriteVarExpr\",\n    value: function visitWriteVarExpr(expr, context) {\n      return this.transformExpr(new WriteVarExpr(expr.name, expr.value.visitExpression(this, context), expr.type, expr.sourceSpan), context);\n    }\n  }, {\n    key: \"visitWriteKeyExpr\",\n    value: function visitWriteKeyExpr(expr, context) {\n      return this.transformExpr(new WriteKeyExpr(expr.receiver.visitExpression(this, context), expr.index.visitExpression(this, context), expr.value.visitExpression(this, context), expr.type, expr.sourceSpan), context);\n    }\n  }, {\n    key: \"visitWritePropExpr\",\n    value: function visitWritePropExpr(expr, context) {\n      return this.transformExpr(new WritePropExpr(expr.receiver.visitExpression(this, context), expr.name, expr.value.visitExpression(this, context), expr.type, expr.sourceSpan), context);\n    }\n  }, {\n    key: \"visitInvokeMethodExpr\",\n    value: function visitInvokeMethodExpr(ast, context) {\n      var method = ast.builtin || ast.name;\n      return this.transformExpr(new InvokeMethodExpr(ast.receiver.visitExpression(this, context), method, this.visitAllExpressions(ast.args, context), ast.type, ast.sourceSpan), context);\n    }\n  }, {\n    key: \"visitInvokeFunctionExpr\",\n    value: function visitInvokeFunctionExpr(ast, context) {\n      return this.transformExpr(new InvokeFunctionExpr(ast.fn.visitExpression(this, context), this.visitAllExpressions(ast.args, context), ast.type, ast.sourceSpan), context);\n    }\n  }, {\n    key: \"visitInstantiateExpr\",\n    value: function visitInstantiateExpr(ast, context) {\n      return this.transformExpr(new InstantiateExpr(ast.classExpr.visitExpression(this, context), this.visitAllExpressions(ast.args, context), ast.type, ast.sourceSpan), context);\n    }\n  }, {\n    key: \"visitLiteralExpr\",\n    value: function visitLiteralExpr(ast, context) {\n      return this.transformExpr(ast, context);\n    }\n  }, {\n    key: \"visitLocalizedString\",\n    value: function visitLocalizedString(ast, context) {\n      return this.transformExpr(new LocalizedString(ast.metaBlock, ast.messageParts, ast.placeHolderNames, this.visitAllExpressions(ast.expressions, context), ast.sourceSpan), context);\n    }\n  }, {\n    key: \"visitExternalExpr\",\n    value: function visitExternalExpr(ast, context) {\n      return this.transformExpr(ast, context);\n    }\n  }, {\n    key: \"visitConditionalExpr\",\n    value: function visitConditionalExpr(ast, context) {\n      return this.transformExpr(new ConditionalExpr(ast.condition.visitExpression(this, context), ast.trueCase.visitExpression(this, context), ast.falseCase.visitExpression(this, context), ast.type, ast.sourceSpan), context);\n    }\n  }, {\n    key: \"visitNotExpr\",\n    value: function visitNotExpr(ast, context) {\n      return this.transformExpr(new NotExpr(ast.condition.visitExpression(this, context), ast.sourceSpan), context);\n    }\n  }, {\n    key: \"visitAssertNotNullExpr\",\n    value: function visitAssertNotNullExpr(ast, context) {\n      return this.transformExpr(new AssertNotNull(ast.condition.visitExpression(this, context), ast.sourceSpan), context);\n    }\n  }, {\n    key: \"visitCastExpr\",\n    value: function visitCastExpr(ast, context) {\n      return this.transformExpr(new CastExpr(ast.value.visitExpression(this, context), ast.type, ast.sourceSpan), context);\n    }\n  }, {\n    key: \"visitFunctionExpr\",\n    value: function visitFunctionExpr(ast, context) {\n      return this.transformExpr(new FunctionExpr(ast.params, this.visitAllStatements(ast.statements, context), ast.type, ast.sourceSpan), context);\n    }\n  }, {\n    key: \"visitUnaryOperatorExpr\",\n    value: function visitUnaryOperatorExpr(ast, context) {\n      return this.transformExpr(new UnaryOperatorExpr(ast.operator, ast.expr.visitExpression(this, context), ast.type, ast.sourceSpan), context);\n    }\n  }, {\n    key: \"visitBinaryOperatorExpr\",\n    value: function visitBinaryOperatorExpr(ast, context) {\n      return this.transformExpr(new BinaryOperatorExpr(ast.operator, ast.lhs.visitExpression(this, context), ast.rhs.visitExpression(this, context), ast.type, ast.sourceSpan), context);\n    }\n  }, {\n    key: \"visitReadPropExpr\",\n    value: function visitReadPropExpr(ast, context) {\n      return this.transformExpr(new ReadPropExpr(ast.receiver.visitExpression(this, context), ast.name, ast.type, ast.sourceSpan), context);\n    }\n  }, {\n    key: \"visitReadKeyExpr\",\n    value: function visitReadKeyExpr(ast, context) {\n      return this.transformExpr(new ReadKeyExpr(ast.receiver.visitExpression(this, context), ast.index.visitExpression(this, context), ast.type, ast.sourceSpan), context);\n    }\n  }, {\n    key: \"visitLiteralArrayExpr\",\n    value: function visitLiteralArrayExpr(ast, context) {\n      return this.transformExpr(new LiteralArrayExpr(this.visitAllExpressions(ast.entries, context), ast.type, ast.sourceSpan), context);\n    }\n  }, {\n    key: \"visitLiteralMapExpr\",\n    value: function visitLiteralMapExpr(ast, context) {\n      var _this42 = this;\n\n      var entries = ast.entries.map(function (entry) {\n        return new LiteralMapEntry(entry.key, entry.value.visitExpression(_this42, context), entry.quoted);\n      });\n      var mapType = new MapType(ast.valueType);\n      return this.transformExpr(new LiteralMapExpr(entries, mapType, ast.sourceSpan), context);\n    }\n  }, {\n    key: \"visitCommaExpr\",\n    value: function visitCommaExpr(ast, context) {\n      return this.transformExpr(new CommaExpr(this.visitAllExpressions(ast.parts, context), ast.sourceSpan), context);\n    }\n  }, {\n    key: \"visitAllExpressions\",\n    value: function visitAllExpressions(exprs, context) {\n      var _this43 = this;\n\n      return exprs.map(function (expr) {\n        return expr.visitExpression(_this43, context);\n      });\n    }\n  }, {\n    key: \"visitDeclareVarStmt\",\n    value: function visitDeclareVarStmt(stmt, context) {\n      var value = stmt.value && stmt.value.visitExpression(this, context);\n      return this.transformStmt(new DeclareVarStmt(stmt.name, value, stmt.type, stmt.modifiers, stmt.sourceSpan, stmt.leadingComments), context);\n    }\n  }, {\n    key: \"visitDeclareFunctionStmt\",\n    value: function visitDeclareFunctionStmt(stmt, context) {\n      return this.transformStmt(new DeclareFunctionStmt(stmt.name, stmt.params, this.visitAllStatements(stmt.statements, context), stmt.type, stmt.modifiers, stmt.sourceSpan, stmt.leadingComments), context);\n    }\n  }, {\n    key: \"visitExpressionStmt\",\n    value: function visitExpressionStmt(stmt, context) {\n      return this.transformStmt(new ExpressionStatement(stmt.expr.visitExpression(this, context), stmt.sourceSpan, stmt.leadingComments), context);\n    }\n  }, {\n    key: \"visitReturnStmt\",\n    value: function visitReturnStmt(stmt, context) {\n      return this.transformStmt(new ReturnStatement(stmt.value.visitExpression(this, context), stmt.sourceSpan, stmt.leadingComments), context);\n    }\n  }, {\n    key: \"visitDeclareClassStmt\",\n    value: function visitDeclareClassStmt(stmt, context) {\n      var _this44 = this;\n\n      var parent = stmt.parent.visitExpression(this, context);\n      var getters = stmt.getters.map(function (getter) {\n        return new ClassGetter(getter.name, _this44.visitAllStatements(getter.body, context), getter.type, getter.modifiers);\n      });\n      var ctorMethod = stmt.constructorMethod && new ClassMethod(stmt.constructorMethod.name, stmt.constructorMethod.params, this.visitAllStatements(stmt.constructorMethod.body, context), stmt.constructorMethod.type, stmt.constructorMethod.modifiers);\n      var methods = stmt.methods.map(function (method) {\n        return new ClassMethod(method.name, method.params, _this44.visitAllStatements(method.body, context), method.type, method.modifiers);\n      });\n      return this.transformStmt(new ClassStmt(stmt.name, parent, stmt.fields, getters, ctorMethod, methods, stmt.modifiers, stmt.sourceSpan), context);\n    }\n  }, {\n    key: \"visitIfStmt\",\n    value: function visitIfStmt(stmt, context) {\n      return this.transformStmt(new IfStmt(stmt.condition.visitExpression(this, context), this.visitAllStatements(stmt.trueCase, context), this.visitAllStatements(stmt.falseCase, context), stmt.sourceSpan, stmt.leadingComments), context);\n    }\n  }, {\n    key: \"visitTryCatchStmt\",\n    value: function visitTryCatchStmt(stmt, context) {\n      return this.transformStmt(new TryCatchStmt(this.visitAllStatements(stmt.bodyStmts, context), this.visitAllStatements(stmt.catchStmts, context), stmt.sourceSpan, stmt.leadingComments), context);\n    }\n  }, {\n    key: \"visitThrowStmt\",\n    value: function visitThrowStmt(stmt, context) {\n      return this.transformStmt(new ThrowStmt(stmt.error.visitExpression(this, context), stmt.sourceSpan, stmt.leadingComments), context);\n    }\n  }, {\n    key: \"visitAllStatements\",\n    value: function visitAllStatements(stmts, context) {\n      var _this45 = this;\n\n      return stmts.map(function (stmt) {\n        return stmt.visitStatement(_this45, context);\n      });\n    }\n  }]);\n\n  return AstTransformer;\n}();\n\nvar RecursiveAstVisitor = /*#__PURE__*/function () {\n  function RecursiveAstVisitor() {\n    _classCallCheck(this, RecursiveAstVisitor);\n  }\n\n  _createClass(RecursiveAstVisitor, [{\n    key: \"visitType\",\n    value: function visitType(ast, context) {\n      return ast;\n    }\n  }, {\n    key: \"visitExpression\",\n    value: function visitExpression(ast, context) {\n      if (ast.type) {\n        ast.type.visitType(this, context);\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitBuiltinType\",\n    value: function visitBuiltinType(type, context) {\n      return this.visitType(type, context);\n    }\n  }, {\n    key: \"visitExpressionType\",\n    value: function visitExpressionType(type, context) {\n      var _this46 = this;\n\n      type.value.visitExpression(this, context);\n\n      if (type.typeParams !== null) {\n        type.typeParams.forEach(function (param) {\n          return _this46.visitType(param, context);\n        });\n      }\n\n      return this.visitType(type, context);\n    }\n  }, {\n    key: \"visitArrayType\",\n    value: function visitArrayType(type, context) {\n      return this.visitType(type, context);\n    }\n  }, {\n    key: \"visitMapType\",\n    value: function visitMapType(type, context) {\n      return this.visitType(type, context);\n    }\n  }, {\n    key: \"visitWrappedNodeExpr\",\n    value: function visitWrappedNodeExpr(ast, context) {\n      return ast;\n    }\n  }, {\n    key: \"visitTypeofExpr\",\n    value: function visitTypeofExpr(ast, context) {\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitReadVarExpr\",\n    value: function visitReadVarExpr(ast, context) {\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitWriteVarExpr\",\n    value: function visitWriteVarExpr(ast, context) {\n      ast.value.visitExpression(this, context);\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitWriteKeyExpr\",\n    value: function visitWriteKeyExpr(ast, context) {\n      ast.receiver.visitExpression(this, context);\n      ast.index.visitExpression(this, context);\n      ast.value.visitExpression(this, context);\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitWritePropExpr\",\n    value: function visitWritePropExpr(ast, context) {\n      ast.receiver.visitExpression(this, context);\n      ast.value.visitExpression(this, context);\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitInvokeMethodExpr\",\n    value: function visitInvokeMethodExpr(ast, context) {\n      ast.receiver.visitExpression(this, context);\n      this.visitAllExpressions(ast.args, context);\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitInvokeFunctionExpr\",\n    value: function visitInvokeFunctionExpr(ast, context) {\n      ast.fn.visitExpression(this, context);\n      this.visitAllExpressions(ast.args, context);\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitInstantiateExpr\",\n    value: function visitInstantiateExpr(ast, context) {\n      ast.classExpr.visitExpression(this, context);\n      this.visitAllExpressions(ast.args, context);\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitLiteralExpr\",\n    value: function visitLiteralExpr(ast, context) {\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitLocalizedString\",\n    value: function visitLocalizedString(ast, context) {\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitExternalExpr\",\n    value: function visitExternalExpr(ast, context) {\n      var _this47 = this;\n\n      if (ast.typeParams) {\n        ast.typeParams.forEach(function (type) {\n          return type.visitType(_this47, context);\n        });\n      }\n\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitConditionalExpr\",\n    value: function visitConditionalExpr(ast, context) {\n      ast.condition.visitExpression(this, context);\n      ast.trueCase.visitExpression(this, context);\n      ast.falseCase.visitExpression(this, context);\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitNotExpr\",\n    value: function visitNotExpr(ast, context) {\n      ast.condition.visitExpression(this, context);\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitAssertNotNullExpr\",\n    value: function visitAssertNotNullExpr(ast, context) {\n      ast.condition.visitExpression(this, context);\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitCastExpr\",\n    value: function visitCastExpr(ast, context) {\n      ast.value.visitExpression(this, context);\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitFunctionExpr\",\n    value: function visitFunctionExpr(ast, context) {\n      this.visitAllStatements(ast.statements, context);\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitUnaryOperatorExpr\",\n    value: function visitUnaryOperatorExpr(ast, context) {\n      ast.expr.visitExpression(this, context);\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitBinaryOperatorExpr\",\n    value: function visitBinaryOperatorExpr(ast, context) {\n      ast.lhs.visitExpression(this, context);\n      ast.rhs.visitExpression(this, context);\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitReadPropExpr\",\n    value: function visitReadPropExpr(ast, context) {\n      ast.receiver.visitExpression(this, context);\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitReadKeyExpr\",\n    value: function visitReadKeyExpr(ast, context) {\n      ast.receiver.visitExpression(this, context);\n      ast.index.visitExpression(this, context);\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitLiteralArrayExpr\",\n    value: function visitLiteralArrayExpr(ast, context) {\n      this.visitAllExpressions(ast.entries, context);\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitLiteralMapExpr\",\n    value: function visitLiteralMapExpr(ast, context) {\n      var _this48 = this;\n\n      ast.entries.forEach(function (entry) {\n        return entry.value.visitExpression(_this48, context);\n      });\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitCommaExpr\",\n    value: function visitCommaExpr(ast, context) {\n      this.visitAllExpressions(ast.parts, context);\n      return this.visitExpression(ast, context);\n    }\n  }, {\n    key: \"visitAllExpressions\",\n    value: function visitAllExpressions(exprs, context) {\n      var _this49 = this;\n\n      exprs.forEach(function (expr) {\n        return expr.visitExpression(_this49, context);\n      });\n    }\n  }, {\n    key: \"visitDeclareVarStmt\",\n    value: function visitDeclareVarStmt(stmt, context) {\n      if (stmt.value) {\n        stmt.value.visitExpression(this, context);\n      }\n\n      if (stmt.type) {\n        stmt.type.visitType(this, context);\n      }\n\n      return stmt;\n    }\n  }, {\n    key: \"visitDeclareFunctionStmt\",\n    value: function visitDeclareFunctionStmt(stmt, context) {\n      this.visitAllStatements(stmt.statements, context);\n\n      if (stmt.type) {\n        stmt.type.visitType(this, context);\n      }\n\n      return stmt;\n    }\n  }, {\n    key: \"visitExpressionStmt\",\n    value: function visitExpressionStmt(stmt, context) {\n      stmt.expr.visitExpression(this, context);\n      return stmt;\n    }\n  }, {\n    key: \"visitReturnStmt\",\n    value: function visitReturnStmt(stmt, context) {\n      stmt.value.visitExpression(this, context);\n      return stmt;\n    }\n  }, {\n    key: \"visitDeclareClassStmt\",\n    value: function visitDeclareClassStmt(stmt, context) {\n      var _this50 = this;\n\n      stmt.parent.visitExpression(this, context);\n      stmt.getters.forEach(function (getter) {\n        return _this50.visitAllStatements(getter.body, context);\n      });\n\n      if (stmt.constructorMethod) {\n        this.visitAllStatements(stmt.constructorMethod.body, context);\n      }\n\n      stmt.methods.forEach(function (method) {\n        return _this50.visitAllStatements(method.body, context);\n      });\n      return stmt;\n    }\n  }, {\n    key: \"visitIfStmt\",\n    value: function visitIfStmt(stmt, context) {\n      stmt.condition.visitExpression(this, context);\n      this.visitAllStatements(stmt.trueCase, context);\n      this.visitAllStatements(stmt.falseCase, context);\n      return stmt;\n    }\n  }, {\n    key: \"visitTryCatchStmt\",\n    value: function visitTryCatchStmt(stmt, context) {\n      this.visitAllStatements(stmt.bodyStmts, context);\n      this.visitAllStatements(stmt.catchStmts, context);\n      return stmt;\n    }\n  }, {\n    key: \"visitThrowStmt\",\n    value: function visitThrowStmt(stmt, context) {\n      stmt.error.visitExpression(this, context);\n      return stmt;\n    }\n  }, {\n    key: \"visitAllStatements\",\n    value: function visitAllStatements(stmts, context) {\n      var _this51 = this;\n\n      stmts.forEach(function (stmt) {\n        return stmt.visitStatement(_this51, context);\n      });\n    }\n  }]);\n\n  return RecursiveAstVisitor;\n}();\n\nfunction findReadVarNames(stmts) {\n  var visitor = new _ReadVarVisitor();\n  visitor.visitAllStatements(stmts, null);\n  return visitor.varNames;\n}\n\nvar _ReadVarVisitor = /*#__PURE__*/function (_RecursiveAstVisitor) {\n  _inherits(_ReadVarVisitor, _RecursiveAstVisitor);\n\n  var _super43 = _createSuper(_ReadVarVisitor);\n\n  function _ReadVarVisitor() {\n    var _this52;\n\n    _classCallCheck(this, _ReadVarVisitor);\n\n    _this52 = _super43.apply(this, arguments);\n    _this52.varNames = new Set();\n    return _this52;\n  }\n\n  _createClass(_ReadVarVisitor, [{\n    key: \"visitDeclareFunctionStmt\",\n    value: function visitDeclareFunctionStmt(stmt, context) {\n      // Don't descend into nested functions\n      return stmt;\n    }\n  }, {\n    key: \"visitDeclareClassStmt\",\n    value: function visitDeclareClassStmt(stmt, context) {\n      // Don't descend into nested classes\n      return stmt;\n    }\n  }, {\n    key: \"visitReadVarExpr\",\n    value: function visitReadVarExpr(ast, context) {\n      if (ast.name) {\n        this.varNames.add(ast.name);\n      }\n\n      return null;\n    }\n  }]);\n\n  return _ReadVarVisitor;\n}(RecursiveAstVisitor);\n\nfunction collectExternalReferences(stmts) {\n  var visitor = new _FindExternalReferencesVisitor();\n  visitor.visitAllStatements(stmts, null);\n  return visitor.externalReferences;\n}\n\nvar _FindExternalReferencesVisitor = /*#__PURE__*/function (_RecursiveAstVisitor2) {\n  _inherits(_FindExternalReferencesVisitor, _RecursiveAstVisitor2);\n\n  var _super44 = _createSuper(_FindExternalReferencesVisitor);\n\n  function _FindExternalReferencesVisitor() {\n    var _this53;\n\n    _classCallCheck(this, _FindExternalReferencesVisitor);\n\n    _this53 = _super44.apply(this, arguments);\n    _this53.externalReferences = [];\n    return _this53;\n  }\n\n  _createClass(_FindExternalReferencesVisitor, [{\n    key: \"visitExternalExpr\",\n    value: function visitExternalExpr(e, context) {\n      this.externalReferences.push(e.value);\n      return _get(_getPrototypeOf(_FindExternalReferencesVisitor.prototype), \"visitExternalExpr\", this).call(this, e, context);\n    }\n  }]);\n\n  return _FindExternalReferencesVisitor;\n}(RecursiveAstVisitor);\n\nfunction applySourceSpanToStatementIfNeeded(stmt, sourceSpan) {\n  if (!sourceSpan) {\n    return stmt;\n  }\n\n  var transformer = new _ApplySourceSpanTransformer(sourceSpan);\n  return stmt.visitStatement(transformer, null);\n}\n\nfunction applySourceSpanToExpressionIfNeeded(expr, sourceSpan) {\n  if (!sourceSpan) {\n    return expr;\n  }\n\n  var transformer = new _ApplySourceSpanTransformer(sourceSpan);\n  return expr.visitExpression(transformer, null);\n}\n\nvar _ApplySourceSpanTransformer = /*#__PURE__*/function (_AstTransformer) {\n  _inherits(_ApplySourceSpanTransformer, _AstTransformer);\n\n  var _super45 = _createSuper(_ApplySourceSpanTransformer);\n\n  function _ApplySourceSpanTransformer(sourceSpan) {\n    var _this54;\n\n    _classCallCheck(this, _ApplySourceSpanTransformer);\n\n    _this54 = _super45.call(this);\n    _this54.sourceSpan = sourceSpan;\n    return _this54;\n  }\n\n  _createClass(_ApplySourceSpanTransformer, [{\n    key: \"_clone\",\n    value: function _clone(obj) {\n      var clone = Object.create(obj.constructor.prototype);\n\n      for (var _i4 = 0, _Object$keys = Object.keys(obj); _i4 < _Object$keys.length; _i4++) {\n        var prop = _Object$keys[_i4];\n        clone[prop] = obj[prop];\n      }\n\n      return clone;\n    }\n  }, {\n    key: \"transformExpr\",\n    value: function transformExpr(expr, context) {\n      if (!expr.sourceSpan) {\n        expr = this._clone(expr);\n        expr.sourceSpan = this.sourceSpan;\n      }\n\n      return expr;\n    }\n  }, {\n    key: \"transformStmt\",\n    value: function transformStmt(stmt, context) {\n      if (!stmt.sourceSpan) {\n        stmt = this._clone(stmt);\n        stmt.sourceSpan = this.sourceSpan;\n      }\n\n      return stmt;\n    }\n  }]);\n\n  return _ApplySourceSpanTransformer;\n}(AstTransformer);\n\nfunction leadingComment(text) {\n  var multiline = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n  var trailingNewline = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;\n  return new LeadingComment(text, multiline, trailingNewline);\n}\n\nfunction jsDocComment() {\n  var tags = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];\n  return new JSDocComment(tags);\n}\n\nfunction variable(name, type, sourceSpan) {\n  return new ReadVarExpr(name, type, sourceSpan);\n}\n\nfunction importExpr(id) {\n  var typeParams = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n  var sourceSpan = arguments.length > 2 ? arguments[2] : undefined;\n  return new ExternalExpr(id, null, typeParams, sourceSpan);\n}\n\nfunction importType(id, typeParams, typeModifiers) {\n  return id != null ? expressionType(importExpr(id, typeParams, null), typeModifiers) : null;\n}\n\nfunction expressionType(expr, typeModifiers, typeParams) {\n  return new ExpressionType(expr, typeModifiers, typeParams);\n}\n\nfunction typeofExpr(expr) {\n  return new TypeofExpr(expr);\n}\n\nfunction literalArr(values, type, sourceSpan) {\n  return new LiteralArrayExpr(values, type, sourceSpan);\n}\n\nfunction literalMap(values) {\n  var type = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n  return new LiteralMapExpr(values.map(function (e) {\n    return new LiteralMapEntry(e.key, e.value, e.quoted);\n  }), type, null);\n}\n\nfunction unary(operator, expr, type, sourceSpan) {\n  return new UnaryOperatorExpr(operator, expr, type, sourceSpan);\n}\n\nfunction not(expr, sourceSpan) {\n  return new NotExpr(expr, sourceSpan);\n}\n\nfunction assertNotNull(expr, sourceSpan) {\n  return new AssertNotNull(expr, sourceSpan);\n}\n\nfunction fn(params, body, type, sourceSpan, name) {\n  return new FunctionExpr(params, body, type, sourceSpan, name);\n}\n\nfunction ifStmt(condition, thenClause, elseClause, sourceSpan, leadingComments) {\n  return new IfStmt(condition, thenClause, elseClause, sourceSpan, leadingComments);\n}\n\nfunction literal(value, type, sourceSpan) {\n  return new LiteralExpr(value, type, sourceSpan);\n}\n\nfunction localizedString(metaBlock, messageParts, placeholderNames, expressions, sourceSpan) {\n  return new LocalizedString(metaBlock, messageParts, placeholderNames, expressions, sourceSpan);\n}\n\nfunction isNull(exp) {\n  return exp instanceof LiteralExpr && exp.value === null;\n}\n/*\n * Serializes a `Tag` into a string.\n * Returns a string like \" @foo {bar} baz\" (note the leading whitespace before `@foo`).\n */\n\n\nfunction tagToString(tag) {\n  var out = '';\n\n  if (tag.tagName) {\n    out += \" @\".concat(tag.tagName);\n  }\n\n  if (tag.text) {\n    if (tag.text.match(/\\/\\*|\\*\\//)) {\n      throw new Error('JSDoc text cannot contain \"/*\" and \"*/\"');\n    }\n\n    out += ' ' + tag.text.replace(/@/g, '\\\\@');\n  }\n\n  return out;\n}\n\nfunction serializeTags(tags) {\n  if (tags.length === 0) return '';\n\n  if (tags.length === 1 && tags[0].tagName && !tags[0].text) {\n    // The JSDOC comment is a single simple tag: e.g `/** @tagname */`.\n    return \"*\".concat(tagToString(tags[0]), \" \");\n  }\n\n  var out = '*\\n';\n\n  var _iterator = _createForOfIteratorHelper(tags),\n      _step;\n\n  try {\n    for (_iterator.s(); !(_step = _iterator.n()).done;) {\n      var tag = _step.value;\n      out += ' *'; // If the tagToString is multi-line, insert \" * \" prefixes on lines.\n\n      out += tagToString(tag).replace(/\\n/g, '\\n * ');\n      out += '\\n';\n    }\n  } catch (err) {\n    _iterator.e(err);\n  } finally {\n    _iterator.f();\n  }\n\n  out += ' ';\n  return out;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar DASH_CASE_REGEXP = /-+([a-z0-9])/g;\n\nfunction dashCaseToCamelCase(input) {\n  return input.replace(DASH_CASE_REGEXP, function () {\n    for (var _len = arguments.length, m = new Array(_len), _key = 0; _key < _len; _key++) {\n      m[_key] = arguments[_key];\n    }\n\n    return m[1].toUpperCase();\n  });\n}\n\nfunction splitAtColon(input, defaultValues) {\n  return _splitAt(input, ':', defaultValues);\n}\n\nfunction splitAtPeriod(input, defaultValues) {\n  return _splitAt(input, '.', defaultValues);\n}\n\nfunction _splitAt(input, character, defaultValues) {\n  var characterIndex = input.indexOf(character);\n  if (characterIndex == -1) return defaultValues;\n  return [input.slice(0, characterIndex).trim(), input.slice(characterIndex + 1).trim()];\n}\n\nfunction visitValue(value, visitor, context) {\n  if (Array.isArray(value)) {\n    return visitor.visitArray(value, context);\n  }\n\n  if (isStrictStringMap(value)) {\n    return visitor.visitStringMap(value, context);\n  }\n\n  if (value == null || typeof value == 'string' || typeof value == 'number' || typeof value == 'boolean') {\n    return visitor.visitPrimitive(value, context);\n  }\n\n  return visitor.visitOther(value, context);\n}\n\nfunction isDefined(val) {\n  return val !== null && val !== undefined;\n}\n\nfunction noUndefined(val) {\n  return val === undefined ? null : val;\n}\n\nvar ValueTransformer = /*#__PURE__*/function () {\n  function ValueTransformer() {\n    _classCallCheck(this, ValueTransformer);\n  }\n\n  _createClass(ValueTransformer, [{\n    key: \"visitArray\",\n    value: function visitArray(arr, context) {\n      var _this55 = this;\n\n      return arr.map(function (value) {\n        return visitValue(value, _this55, context);\n      });\n    }\n  }, {\n    key: \"visitStringMap\",\n    value: function visitStringMap(map, context) {\n      var _this56 = this;\n\n      var result = {};\n      Object.keys(map).forEach(function (key) {\n        result[key] = visitValue(map[key], _this56, context);\n      });\n      return result;\n    }\n  }, {\n    key: \"visitPrimitive\",\n    value: function visitPrimitive(value, context) {\n      return value;\n    }\n  }, {\n    key: \"visitOther\",\n    value: function visitOther(value, context) {\n      return value;\n    }\n  }]);\n\n  return ValueTransformer;\n}();\n\nvar SyncAsync = {\n  assertSync: function assertSync(value) {\n    if (isPromise(value)) {\n      throw new Error(\"Illegal state: value cannot be a promise\");\n    }\n\n    return value;\n  },\n  then: function then(value, cb) {\n    return isPromise(value) ? value.then(cb) : cb(value);\n  },\n  all: function all(syncAsyncValues) {\n    return syncAsyncValues.some(isPromise) ? Promise.all(syncAsyncValues) : syncAsyncValues;\n  }\n};\n\nfunction error(msg) {\n  throw new Error(\"Internal Error: \".concat(msg));\n}\n\nfunction syntaxError(msg, parseErrors) {\n  var error = Error(msg);\n  error[ERROR_SYNTAX_ERROR] = true;\n  if (parseErrors) error[ERROR_PARSE_ERRORS] = parseErrors;\n  return error;\n}\n\nvar ERROR_SYNTAX_ERROR = 'ngSyntaxError';\nvar ERROR_PARSE_ERRORS = 'ngParseErrors';\n\nfunction isSyntaxError(error) {\n  return error[ERROR_SYNTAX_ERROR];\n}\n\nfunction getParseErrors(error) {\n  return error[ERROR_PARSE_ERRORS] || [];\n} // Escape characters that have a special meaning in Regular Expressions\n\n\nfunction escapeRegExp(s) {\n  return s.replace(/([.*+?^=!:${}()|[\\]\\/\\\\])/g, '\\\\$1');\n}\n\nvar STRING_MAP_PROTO = Object.getPrototypeOf({});\n\nfunction isStrictStringMap(obj) {\n  return _typeof(obj) === 'object' && obj !== null && Object.getPrototypeOf(obj) === STRING_MAP_PROTO;\n}\n\nfunction utf8Encode(str) {\n  var encoded = [];\n\n  for (var index = 0; index < str.length; index++) {\n    var codePoint = str.charCodeAt(index); // decode surrogate\n    // see https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae\n\n    if (codePoint >= 0xd800 && codePoint <= 0xdbff && str.length > index + 1) {\n      var low = str.charCodeAt(index + 1);\n\n      if (low >= 0xdc00 && low <= 0xdfff) {\n        index++;\n        codePoint = (codePoint - 0xd800 << 10) + low - 0xdc00 + 0x10000;\n      }\n    }\n\n    if (codePoint <= 0x7f) {\n      encoded.push(codePoint);\n    } else if (codePoint <= 0x7ff) {\n      encoded.push(codePoint >> 6 & 0x1F | 0xc0, codePoint & 0x3f | 0x80);\n    } else if (codePoint <= 0xffff) {\n      encoded.push(codePoint >> 12 | 0xe0, codePoint >> 6 & 0x3f | 0x80, codePoint & 0x3f | 0x80);\n    } else if (codePoint <= 0x1fffff) {\n      encoded.push(codePoint >> 18 & 0x07 | 0xf0, codePoint >> 12 & 0x3f | 0x80, codePoint >> 6 & 0x3f | 0x80, codePoint & 0x3f | 0x80);\n    }\n  }\n\n  return encoded;\n}\n\nfunction stringify(token) {\n  if (typeof token === 'string') {\n    return token;\n  }\n\n  if (Array.isArray(token)) {\n    return '[' + token.map(stringify).join(', ') + ']';\n  }\n\n  if (token == null) {\n    return '' + token;\n  }\n\n  if (token.overriddenName) {\n    return \"\".concat(token.overriddenName);\n  }\n\n  if (token.name) {\n    return \"\".concat(token.name);\n  }\n\n  if (!token.toString) {\n    return 'object';\n  } // WARNING: do not try to `JSON.stringify(token)` here\n  // see https://github.com/angular/angular/issues/23440\n\n\n  var res = token.toString();\n\n  if (res == null) {\n    return '' + res;\n  }\n\n  var newLineIndex = res.indexOf('\\n');\n  return newLineIndex === -1 ? res : res.substring(0, newLineIndex);\n}\n/**\n * Lazily retrieves the reference value from a forwardRef.\n */\n\n\nfunction resolveForwardRef(type) {\n  if (typeof type === 'function' && type.hasOwnProperty('__forward_ref__')) {\n    return type();\n  } else {\n    return type;\n  }\n}\n/**\n * Determine if the argument is shaped like a Promise\n */\n\n\nfunction isPromise(obj) {\n  // allow any Promise/A+ compliant thenable.\n  // It's up to the caller to ensure that obj.then conforms to the spec\n  return !!obj && typeof obj.then === 'function';\n}\n\nvar Version = /*#__PURE__*/_createClass(function Version(full) {\n  _classCallCheck(this, Version);\n\n  this.full = full;\n  var splits = full.split('.');\n  this.major = splits[0];\n  this.minor = splits[1];\n  this.patch = splits.slice(2).join('.');\n});\n\nvar __window = typeof window !== 'undefined' && window;\n\nvar __self = typeof self !== 'undefined' && typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope && self;\n\nvar __global = typeof global !== 'undefined' && global; // Check __global first, because in Node tests both __global and __window may be defined and _global\n// should be __global in that case.\n\n\nvar _global = __global || __window || __self;\n\nfunction newArray(size, value) {\n  var list = [];\n\n  for (var i = 0; i < size; i++) {\n    list.push(value);\n  }\n\n  return list;\n}\n/**\n * Partitions a given array into 2 arrays, based on a boolean value returned by the condition\n * function.\n *\n * @param arr Input array that should be partitioned\n * @param conditionFn Condition function that is called for each item in a given array and returns a\n * boolean value.\n */\n\n\nfunction partitionArray(arr, conditionFn) {\n  var truthy = [];\n  var falsy = [];\n\n  var _iterator2 = _createForOfIteratorHelper(arr),\n      _step2;\n\n  try {\n    for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {\n      var item = _step2.value;\n      (conditionFn(item) ? truthy : falsy).push(item);\n    }\n  } catch (err) {\n    _iterator2.e(err);\n  } finally {\n    _iterator2.f();\n  }\n\n  return [truthy, falsy];\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar CONSTANT_PREFIX = '_c';\n/**\n * `ConstantPool` tries to reuse literal factories when two or more literals are identical.\n * We determine whether literals are identical by creating a key out of their AST using the\n * `KeyVisitor`. This constant is used to replace dynamic expressions which can't be safely\n * converted into a key. E.g. given an expression `{foo: bar()}`, since we don't know what\n * the result of `bar` will be, we create a key that looks like `{foo: <unknown>}`. Note\n * that we use a variable, rather than something like `null` in order to avoid collisions.\n */\n\nvar UNKNOWN_VALUE_KEY = variable('<unknown>');\n/**\n * Context to use when producing a key.\n *\n * This ensures we see the constant not the reference variable when producing\n * a key.\n */\n\nvar KEY_CONTEXT = {};\n/**\n * Generally all primitive values are excluded from the `ConstantPool`, but there is an exclusion\n * for strings that reach a certain length threshold. This constant defines the length threshold for\n * strings.\n */\n\nvar POOL_INCLUSION_LENGTH_THRESHOLD_FOR_STRINGS = 50;\n/**\n * A node that is a place-holder that allows the node to be replaced when the actual\n * node is known.\n *\n * This allows the constant pool to change an expression from a direct reference to\n * a constant to a shared constant. It returns a fix-up node that is later allowed to\n * change the referenced expression.\n */\n\nvar FixupExpression = /*#__PURE__*/function (_Expression25) {\n  _inherits(FixupExpression, _Expression25);\n\n  var _super46 = _createSuper(FixupExpression);\n\n  function FixupExpression(resolved) {\n    var _this57;\n\n    _classCallCheck(this, FixupExpression);\n\n    _this57 = _super46.call(this, resolved.type);\n    _this57.resolved = resolved;\n    _this57.original = resolved;\n    return _this57;\n  }\n\n  _createClass(FixupExpression, [{\n    key: \"visitExpression\",\n    value: function visitExpression(visitor, context) {\n      if (context === KEY_CONTEXT) {\n        // When producing a key we want to traverse the constant not the\n        // variable used to refer to it.\n        return this.original.visitExpression(visitor, context);\n      } else {\n        return this.resolved.visitExpression(visitor, context);\n      }\n    }\n  }, {\n    key: \"isEquivalent\",\n    value: function isEquivalent(e) {\n      return e instanceof FixupExpression && this.resolved.isEquivalent(e.resolved);\n    }\n  }, {\n    key: \"isConstant\",\n    value: function isConstant() {\n      return true;\n    }\n  }, {\n    key: \"fixup\",\n    value: function fixup(expression) {\n      this.resolved = expression;\n      this.shared = true;\n    }\n  }]);\n\n  return FixupExpression;\n}(Expression);\n/**\n * A constant pool allows a code emitter to share constant in an output context.\n *\n * The constant pool also supports sharing access to ivy definitions references.\n */\n\n\nvar ConstantPool = /*#__PURE__*/function () {\n  function ConstantPool() {\n    var isClosureCompilerEnabled = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;\n\n    _classCallCheck(this, ConstantPool);\n\n    this.isClosureCompilerEnabled = isClosureCompilerEnabled;\n    this.statements = [];\n    this.literals = new Map();\n    this.literalFactories = new Map();\n    this.injectorDefinitions = new Map();\n    this.directiveDefinitions = new Map();\n    this.componentDefinitions = new Map();\n    this.pipeDefinitions = new Map();\n    this.nextNameIndex = 0;\n  }\n\n  _createClass(ConstantPool, [{\n    key: \"getConstLiteral\",\n    value: function getConstLiteral(literal, forceShared) {\n      if (literal instanceof LiteralExpr && !isLongStringLiteral(literal) || literal instanceof FixupExpression) {\n        // Do no put simple literals into the constant pool or try to produce a constant for a\n        // reference to a constant.\n        return literal;\n      }\n\n      var key = this.keyOf(literal);\n      var fixup = this.literals.get(key);\n      var newValue = false;\n\n      if (!fixup) {\n        fixup = new FixupExpression(literal);\n        this.literals.set(key, fixup);\n        newValue = true;\n      }\n\n      if (!newValue && !fixup.shared || newValue && forceShared) {\n        // Replace the expression with a variable\n        var name = this.freshName();\n        var definition;\n        var usage;\n\n        if (this.isClosureCompilerEnabled && isLongStringLiteral(literal)) {\n          // For string literals, Closure will **always** inline the string at\n          // **all** usages, duplicating it each time. For large strings, this\n          // unnecessarily bloats bundle size. To work around this restriction, we\n          // wrap the string in a function, and call that function for each usage.\n          // This tricks Closure into using inline logic for functions instead of\n          // string literals. Function calls are only inlined if the body is small\n          // enough to be worth it. By doing this, very large strings will be\n          // shared across multiple usages, rather than duplicating the string at\n          // each usage site.\n          //\n          // const myStr = function() { return \"very very very long string\"; };\n          // const usage1 = myStr();\n          // const usage2 = myStr();\n          definition = variable(name).set(new FunctionExpr([], // Params.\n          [// Statements.\n          new ReturnStatement(literal)]));\n          usage = variable(name).callFn([]);\n        } else {\n          // Just declare and use the variable directly, without a function call\n          // indirection. This saves a few bytes and avoids an unncessary call.\n          definition = variable(name).set(literal);\n          usage = variable(name);\n        }\n\n        this.statements.push(definition.toDeclStmt(INFERRED_TYPE, [StmtModifier.Final]));\n        fixup.fixup(usage);\n      }\n\n      return fixup;\n    }\n  }, {\n    key: \"getDefinition\",\n    value: function getDefinition(type, kind, ctx) {\n      var forceShared = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;\n      var definitions = this.definitionsOf(kind);\n      var fixup = definitions.get(type);\n      var newValue = false;\n\n      if (!fixup) {\n        var property = this.propertyNameOf(kind);\n        fixup = new FixupExpression(ctx.importExpr(type).prop(property));\n        definitions.set(type, fixup);\n        newValue = true;\n      }\n\n      if (!newValue && !fixup.shared || newValue && forceShared) {\n        var name = this.freshName();\n        this.statements.push(variable(name).set(fixup.resolved).toDeclStmt(INFERRED_TYPE, [StmtModifier.Final]));\n        fixup.fixup(variable(name));\n      }\n\n      return fixup;\n    }\n  }, {\n    key: \"getLiteralFactory\",\n    value: function getLiteralFactory(literal) {\n      // Create a pure function that builds an array of a mix of constant and variable expressions\n      if (literal instanceof LiteralArrayExpr) {\n        var argumentsForKey = literal.entries.map(function (e) {\n          return e.isConstant() ? e : UNKNOWN_VALUE_KEY;\n        });\n        var key = this.keyOf(literalArr(argumentsForKey));\n        return this._getLiteralFactory(key, literal.entries, function (entries) {\n          return literalArr(entries);\n        });\n      } else {\n        var expressionForKey = literalMap(literal.entries.map(function (e) {\n          return {\n            key: e.key,\n            value: e.value.isConstant() ? e.value : UNKNOWN_VALUE_KEY,\n            quoted: e.quoted\n          };\n        }));\n\n        var _key2 = this.keyOf(expressionForKey);\n\n        return this._getLiteralFactory(_key2, literal.entries.map(function (e) {\n          return e.value;\n        }), function (entries) {\n          return literalMap(entries.map(function (value, index) {\n            return {\n              key: literal.entries[index].key,\n              value: value,\n              quoted: literal.entries[index].quoted\n            };\n          }));\n        });\n      }\n    }\n  }, {\n    key: \"_getLiteralFactory\",\n    value: function _getLiteralFactory(key, values, resultMap) {\n      var _this58 = this;\n\n      var literalFactory = this.literalFactories.get(key);\n      var literalFactoryArguments = values.filter(function (e) {\n        return !e.isConstant();\n      });\n\n      if (!literalFactory) {\n        var resultExpressions = values.map(function (e, index) {\n          return e.isConstant() ? _this58.getConstLiteral(e, true) : variable(\"a\".concat(index));\n        });\n        var parameters = resultExpressions.filter(isVariable).map(function (e) {\n          return new FnParam(e.name, DYNAMIC_TYPE);\n        });\n        var pureFunctionDeclaration = fn(parameters, [new ReturnStatement(resultMap(resultExpressions))], INFERRED_TYPE);\n        var name = this.freshName();\n        this.statements.push(variable(name).set(pureFunctionDeclaration).toDeclStmt(INFERRED_TYPE, [StmtModifier.Final]));\n        literalFactory = variable(name);\n        this.literalFactories.set(key, literalFactory);\n      }\n\n      return {\n        literalFactory: literalFactory,\n        literalFactoryArguments: literalFactoryArguments\n      };\n    }\n    /**\n     * Produce a unique name.\n     *\n     * The name might be unique among different prefixes if any of the prefixes end in\n     * a digit so the prefix should be a constant string (not based on user input) and\n     * must not end in a digit.\n     */\n\n  }, {\n    key: \"uniqueName\",\n    value: function uniqueName(prefix) {\n      return \"\".concat(prefix).concat(this.nextNameIndex++);\n    }\n  }, {\n    key: \"definitionsOf\",\n    value: function definitionsOf(kind) {\n      switch (kind) {\n        case 2\n        /* Component */\n        :\n          return this.componentDefinitions;\n\n        case 1\n        /* Directive */\n        :\n          return this.directiveDefinitions;\n\n        case 0\n        /* Injector */\n        :\n          return this.injectorDefinitions;\n\n        case 3\n        /* Pipe */\n        :\n          return this.pipeDefinitions;\n      }\n\n      error(\"Unknown definition kind \".concat(kind));\n      return this.componentDefinitions;\n    }\n  }, {\n    key: \"propertyNameOf\",\n    value: function propertyNameOf(kind) {\n      switch (kind) {\n        case 2\n        /* Component */\n        :\n          return 'ɵcmp';\n\n        case 1\n        /* Directive */\n        :\n          return 'ɵdir';\n\n        case 0\n        /* Injector */\n        :\n          return 'ɵinj';\n\n        case 3\n        /* Pipe */\n        :\n          return 'ɵpipe';\n      }\n\n      error(\"Unknown definition kind \".concat(kind));\n      return '<unknown>';\n    }\n  }, {\n    key: \"freshName\",\n    value: function freshName() {\n      return this.uniqueName(CONSTANT_PREFIX);\n    }\n  }, {\n    key: \"keyOf\",\n    value: function keyOf(expression) {\n      return expression.visitExpression(new KeyVisitor(), KEY_CONTEXT);\n    }\n  }]);\n\n  return ConstantPool;\n}();\n/**\n * Visitor used to determine if 2 expressions are equivalent and can be shared in the\n * `ConstantPool`.\n *\n * When the id (string) generated by the visitor is equal, expressions are considered equivalent.\n */\n\n\nvar KeyVisitor = /*#__PURE__*/function () {\n  function KeyVisitor() {\n    _classCallCheck(this, KeyVisitor);\n\n    this.visitWrappedNodeExpr = invalid;\n    this.visitWriteVarExpr = invalid;\n    this.visitWriteKeyExpr = invalid;\n    this.visitWritePropExpr = invalid;\n    this.visitInvokeMethodExpr = invalid;\n    this.visitInvokeFunctionExpr = invalid;\n    this.visitInstantiateExpr = invalid;\n    this.visitConditionalExpr = invalid;\n    this.visitNotExpr = invalid;\n    this.visitAssertNotNullExpr = invalid;\n    this.visitCastExpr = invalid;\n    this.visitFunctionExpr = invalid;\n    this.visitUnaryOperatorExpr = invalid;\n    this.visitBinaryOperatorExpr = invalid;\n    this.visitReadPropExpr = invalid;\n    this.visitReadKeyExpr = invalid;\n    this.visitCommaExpr = invalid;\n    this.visitLocalizedString = invalid;\n  }\n\n  _createClass(KeyVisitor, [{\n    key: \"visitLiteralExpr\",\n    value: function visitLiteralExpr(ast) {\n      return \"\".concat(typeof ast.value === 'string' ? '\"' + ast.value + '\"' : ast.value);\n    }\n  }, {\n    key: \"visitLiteralArrayExpr\",\n    value: function visitLiteralArrayExpr(ast, context) {\n      var _this59 = this;\n\n      return \"[\".concat(ast.entries.map(function (entry) {\n        return entry.visitExpression(_this59, context);\n      }).join(','), \"]\");\n    }\n  }, {\n    key: \"visitLiteralMapExpr\",\n    value: function visitLiteralMapExpr(ast, context) {\n      var _this60 = this;\n\n      var mapKey = function mapKey(entry) {\n        var quote = entry.quoted ? '\"' : '';\n        return \"\".concat(quote).concat(entry.key).concat(quote);\n      };\n\n      var mapEntry = function mapEntry(entry) {\n        return \"\".concat(mapKey(entry), \":\").concat(entry.value.visitExpression(_this60, context));\n      };\n\n      return \"{\".concat(ast.entries.map(mapEntry).join(','));\n    }\n  }, {\n    key: \"visitExternalExpr\",\n    value: function visitExternalExpr(ast) {\n      return ast.value.moduleName ? \"EX:\".concat(ast.value.moduleName, \":\").concat(ast.value.name) : \"EX:\".concat(ast.value.runtime.name);\n    }\n  }, {\n    key: \"visitReadVarExpr\",\n    value: function visitReadVarExpr(node) {\n      return \"VAR:\".concat(node.name);\n    }\n  }, {\n    key: \"visitTypeofExpr\",\n    value: function visitTypeofExpr(node, context) {\n      return \"TYPEOF:\".concat(node.expr.visitExpression(this, context));\n    }\n  }]);\n\n  return KeyVisitor;\n}();\n\nfunction invalid(arg) {\n  throw new Error(\"Invalid state: Visitor \".concat(this.constructor.name, \" doesn't handle \").concat(arg.constructor.name));\n}\n\nfunction isVariable(e) {\n  return e instanceof ReadVarExpr;\n}\n\nfunction isLongStringLiteral(expr) {\n  return expr instanceof LiteralExpr && typeof expr.value === 'string' && expr.value.length >= POOL_INCLUSION_LENGTH_THRESHOLD_FOR_STRINGS;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar CORE = '@angular/core';\n\nvar Identifiers = /*#__PURE__*/_createClass(function Identifiers() {\n  _classCallCheck(this, Identifiers);\n});\n\nIdentifiers.ANALYZE_FOR_ENTRY_COMPONENTS = {\n  name: 'ANALYZE_FOR_ENTRY_COMPONENTS',\n  moduleName: CORE\n};\nIdentifiers.ElementRef = {\n  name: 'ElementRef',\n  moduleName: CORE\n};\nIdentifiers.NgModuleRef = {\n  name: 'NgModuleRef',\n  moduleName: CORE\n};\nIdentifiers.ViewContainerRef = {\n  name: 'ViewContainerRef',\n  moduleName: CORE\n};\nIdentifiers.ChangeDetectorRef = {\n  name: 'ChangeDetectorRef',\n  moduleName: CORE\n};\nIdentifiers.QueryList = {\n  name: 'QueryList',\n  moduleName: CORE\n};\nIdentifiers.TemplateRef = {\n  name: 'TemplateRef',\n  moduleName: CORE\n};\nIdentifiers.Renderer2 = {\n  name: 'Renderer2',\n  moduleName: CORE\n};\nIdentifiers.CodegenComponentFactoryResolver = {\n  name: 'ɵCodegenComponentFactoryResolver',\n  moduleName: CORE\n};\nIdentifiers.ComponentFactoryResolver = {\n  name: 'ComponentFactoryResolver',\n  moduleName: CORE\n};\nIdentifiers.ComponentFactory = {\n  name: 'ComponentFactory',\n  moduleName: CORE\n};\nIdentifiers.ComponentRef = {\n  name: 'ComponentRef',\n  moduleName: CORE\n};\nIdentifiers.NgModuleFactory = {\n  name: 'NgModuleFactory',\n  moduleName: CORE\n};\nIdentifiers.createModuleFactory = {\n  name: 'ɵcmf',\n  moduleName: CORE\n};\nIdentifiers.moduleDef = {\n  name: 'ɵmod',\n  moduleName: CORE\n};\nIdentifiers.moduleProviderDef = {\n  name: 'ɵmpd',\n  moduleName: CORE\n};\nIdentifiers.RegisterModuleFactoryFn = {\n  name: 'ɵregisterModuleFactory',\n  moduleName: CORE\n};\nIdentifiers.inject = {\n  name: 'ɵɵinject',\n  moduleName: CORE\n};\nIdentifiers.directiveInject = {\n  name: 'ɵɵdirectiveInject',\n  moduleName: CORE\n};\nIdentifiers.INJECTOR = {\n  name: 'INJECTOR',\n  moduleName: CORE\n};\nIdentifiers.Injector = {\n  name: 'Injector',\n  moduleName: CORE\n};\nIdentifiers.ɵɵdefineInjectable = {\n  name: 'ɵɵdefineInjectable',\n  moduleName: CORE\n};\nIdentifiers.InjectableDef = {\n  name: 'ɵɵInjectableDef',\n  moduleName: CORE\n};\nIdentifiers.ViewEncapsulation = {\n  name: 'ViewEncapsulation',\n  moduleName: CORE\n};\nIdentifiers.ChangeDetectionStrategy = {\n  name: 'ChangeDetectionStrategy',\n  moduleName: CORE\n};\nIdentifiers.SecurityContext = {\n  name: 'SecurityContext',\n  moduleName: CORE\n};\nIdentifiers.LOCALE_ID = {\n  name: 'LOCALE_ID',\n  moduleName: CORE\n};\nIdentifiers.TRANSLATIONS_FORMAT = {\n  name: 'TRANSLATIONS_FORMAT',\n  moduleName: CORE\n};\nIdentifiers.inlineInterpolate = {\n  name: 'ɵinlineInterpolate',\n  moduleName: CORE\n};\nIdentifiers.interpolate = {\n  name: 'ɵinterpolate',\n  moduleName: CORE\n};\nIdentifiers.EMPTY_ARRAY = {\n  name: 'ɵEMPTY_ARRAY',\n  moduleName: CORE\n};\nIdentifiers.EMPTY_MAP = {\n  name: 'ɵEMPTY_MAP',\n  moduleName: CORE\n};\nIdentifiers.Renderer = {\n  name: 'Renderer',\n  moduleName: CORE\n};\nIdentifiers.viewDef = {\n  name: 'ɵvid',\n  moduleName: CORE\n};\nIdentifiers.elementDef = {\n  name: 'ɵeld',\n  moduleName: CORE\n};\nIdentifiers.anchorDef = {\n  name: 'ɵand',\n  moduleName: CORE\n};\nIdentifiers.textDef = {\n  name: 'ɵted',\n  moduleName: CORE\n};\nIdentifiers.directiveDef = {\n  name: 'ɵdid',\n  moduleName: CORE\n};\nIdentifiers.providerDef = {\n  name: 'ɵprd',\n  moduleName: CORE\n};\nIdentifiers.queryDef = {\n  name: 'ɵqud',\n  moduleName: CORE\n};\nIdentifiers.pureArrayDef = {\n  name: 'ɵpad',\n  moduleName: CORE\n};\nIdentifiers.pureObjectDef = {\n  name: 'ɵpod',\n  moduleName: CORE\n};\nIdentifiers.purePipeDef = {\n  name: 'ɵppd',\n  moduleName: CORE\n};\nIdentifiers.pipeDef = {\n  name: 'ɵpid',\n  moduleName: CORE\n};\nIdentifiers.nodeValue = {\n  name: 'ɵnov',\n  moduleName: CORE\n};\nIdentifiers.ngContentDef = {\n  name: 'ɵncd',\n  moduleName: CORE\n};\nIdentifiers.unwrapValue = {\n  name: 'ɵunv',\n  moduleName: CORE\n};\nIdentifiers.createRendererType2 = {\n  name: 'ɵcrt',\n  moduleName: CORE\n}; // type only\n\nIdentifiers.RendererType2 = {\n  name: 'RendererType2',\n  moduleName: CORE\n}; // type only\n\nIdentifiers.ViewDefinition = {\n  name: 'ɵViewDefinition',\n  moduleName: CORE\n};\nIdentifiers.createComponentFactory = {\n  name: 'ɵccf',\n  moduleName: CORE\n};\nIdentifiers.setClassMetadata = {\n  name: 'ɵsetClassMetadata',\n  moduleName: CORE\n};\n\nfunction createTokenForReference(reference) {\n  return {\n    identifier: {\n      reference: reference\n    }\n  };\n}\n\nfunction createTokenForExternalReference(reflector, reference) {\n  return createTokenForReference(reflector.resolveExternalReference(reference));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A token representing the a reference to a static type.\n *\n * This token is unique for a filePath and name and can be used as a hash table key.\n */\n\n\nvar StaticSymbol = /*#__PURE__*/function () {\n  function StaticSymbol(filePath, name, members) {\n    _classCallCheck(this, StaticSymbol);\n\n    this.filePath = filePath;\n    this.name = name;\n    this.members = members;\n  }\n\n  _createClass(StaticSymbol, [{\n    key: \"assertNoMembers\",\n    value: function assertNoMembers() {\n      if (this.members.length) {\n        throw new Error(\"Illegal state: symbol without members expected, but got \".concat(JSON.stringify(this), \".\"));\n      }\n    }\n  }]);\n\n  return StaticSymbol;\n}();\n/**\n * A cache of static symbol used by the StaticReflector to return the same symbol for the\n * same symbol values.\n */\n\n\nvar StaticSymbolCache = /*#__PURE__*/function () {\n  function StaticSymbolCache() {\n    _classCallCheck(this, StaticSymbolCache);\n\n    this.cache = new Map();\n  }\n\n  _createClass(StaticSymbolCache, [{\n    key: \"get\",\n    value: function get(declarationFile, name, members) {\n      members = members || [];\n      var memberSuffix = members.length ? \".\".concat(members.join('.')) : '';\n      var key = \"\\\"\".concat(declarationFile, \"\\\".\").concat(name).concat(memberSuffix);\n      var result = this.cache.get(key);\n\n      if (!result) {\n        result = new StaticSymbol(declarationFile, name, members);\n        this.cache.set(key, result);\n      }\n\n      return result;\n    }\n  }]);\n\n  return StaticSymbolCache;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// group 0: \"[prop] or (event) or @trigger\"\n// group 1: \"prop\" from \"[prop]\"\n// group 2: \"event\" from \"(event)\"\n// group 3: \"@trigger\" from \"@trigger\"\n\n\nvar HOST_REG_EXP = /^(?:(?:\\[([^\\]]+)\\])|(?:\\(([^\\)]+)\\)))|(\\@[-\\w]+)$/;\n\nfunction sanitizeIdentifier(name) {\n  return name.replace(/\\W/g, '_');\n}\n\nvar _anonymousTypeIndex = 0;\n\nfunction identifierName(compileIdentifier) {\n  if (!compileIdentifier || !compileIdentifier.reference) {\n    return null;\n  }\n\n  var ref = compileIdentifier.reference;\n\n  if (ref instanceof StaticSymbol) {\n    return ref.name;\n  }\n\n  if (ref['__anonymousType']) {\n    return ref['__anonymousType'];\n  }\n\n  var identifier = stringify(ref);\n\n  if (identifier.indexOf('(') >= 0) {\n    // case: anonymous functions!\n    identifier = \"anonymous_\".concat(_anonymousTypeIndex++);\n    ref['__anonymousType'] = identifier;\n  } else {\n    identifier = sanitizeIdentifier(identifier);\n  }\n\n  return identifier;\n}\n\nfunction identifierModuleUrl(compileIdentifier) {\n  var ref = compileIdentifier.reference;\n\n  if (ref instanceof StaticSymbol) {\n    return ref.filePath;\n  } // Runtime type\n\n\n  return \"./\".concat(stringify(ref));\n}\n\nfunction viewClassName(compType, embeddedTemplateIndex) {\n  return \"View_\".concat(identifierName({\n    reference: compType\n  }), \"_\").concat(embeddedTemplateIndex);\n}\n\nfunction rendererTypeName(compType) {\n  return \"RenderType_\".concat(identifierName({\n    reference: compType\n  }));\n}\n\nfunction hostViewClassName(compType) {\n  return \"HostView_\".concat(identifierName({\n    reference: compType\n  }));\n}\n\nfunction componentFactoryName(compType) {\n  return \"\".concat(identifierName({\n    reference: compType\n  }), \"NgFactory\");\n}\n\nvar CompileSummaryKind;\n\n(function (CompileSummaryKind) {\n  CompileSummaryKind[CompileSummaryKind[\"Pipe\"] = 0] = \"Pipe\";\n  CompileSummaryKind[CompileSummaryKind[\"Directive\"] = 1] = \"Directive\";\n  CompileSummaryKind[CompileSummaryKind[\"NgModule\"] = 2] = \"NgModule\";\n  CompileSummaryKind[CompileSummaryKind[\"Injectable\"] = 3] = \"Injectable\";\n})(CompileSummaryKind || (CompileSummaryKind = {}));\n\nfunction tokenName(token) {\n  return token.value != null ? sanitizeIdentifier(token.value) : identifierName(token.identifier);\n}\n\nfunction tokenReference(token) {\n  if (token.identifier != null) {\n    return token.identifier.reference;\n  } else {\n    return token.value;\n  }\n}\n/**\n * Metadata about a stylesheet\n */\n\n\nvar CompileStylesheetMetadata = /*#__PURE__*/_createClass(function CompileStylesheetMetadata() {\n  var _ref3 = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},\n      moduleUrl = _ref3.moduleUrl,\n      styles = _ref3.styles,\n      styleUrls = _ref3.styleUrls;\n\n  _classCallCheck(this, CompileStylesheetMetadata);\n\n  this.moduleUrl = moduleUrl || null;\n  this.styles = _normalizeArray(styles);\n  this.styleUrls = _normalizeArray(styleUrls);\n});\n/**\n * Metadata regarding compilation of a template.\n */\n\n\nvar CompileTemplateMetadata = /*#__PURE__*/function () {\n  function CompileTemplateMetadata(_ref4) {\n    var encapsulation = _ref4.encapsulation,\n        template = _ref4.template,\n        templateUrl = _ref4.templateUrl,\n        htmlAst = _ref4.htmlAst,\n        styles = _ref4.styles,\n        styleUrls = _ref4.styleUrls,\n        externalStylesheets = _ref4.externalStylesheets,\n        animations = _ref4.animations,\n        ngContentSelectors = _ref4.ngContentSelectors,\n        interpolation = _ref4.interpolation,\n        isInline = _ref4.isInline,\n        preserveWhitespaces = _ref4.preserveWhitespaces;\n\n    _classCallCheck(this, CompileTemplateMetadata);\n\n    this.encapsulation = encapsulation;\n    this.template = template;\n    this.templateUrl = templateUrl;\n    this.htmlAst = htmlAst;\n    this.styles = _normalizeArray(styles);\n    this.styleUrls = _normalizeArray(styleUrls);\n    this.externalStylesheets = _normalizeArray(externalStylesheets);\n    this.animations = animations ? flatten(animations) : [];\n    this.ngContentSelectors = ngContentSelectors || [];\n\n    if (interpolation && interpolation.length != 2) {\n      throw new Error(\"'interpolation' should have a start and an end symbol.\");\n    }\n\n    this.interpolation = interpolation;\n    this.isInline = isInline;\n    this.preserveWhitespaces = preserveWhitespaces;\n  }\n\n  _createClass(CompileTemplateMetadata, [{\n    key: \"toSummary\",\n    value: function toSummary() {\n      return {\n        ngContentSelectors: this.ngContentSelectors,\n        encapsulation: this.encapsulation,\n        styles: this.styles,\n        animations: this.animations\n      };\n    }\n  }]);\n\n  return CompileTemplateMetadata;\n}();\n/**\n * Metadata regarding compilation of a directive.\n */\n\n\nvar CompileDirectiveMetadata = /*#__PURE__*/function () {\n  function CompileDirectiveMetadata(_ref5) {\n    var isHost = _ref5.isHost,\n        type = _ref5.type,\n        isComponent = _ref5.isComponent,\n        selector = _ref5.selector,\n        exportAs = _ref5.exportAs,\n        changeDetection = _ref5.changeDetection,\n        inputs = _ref5.inputs,\n        outputs = _ref5.outputs,\n        hostListeners = _ref5.hostListeners,\n        hostProperties = _ref5.hostProperties,\n        hostAttributes = _ref5.hostAttributes,\n        providers = _ref5.providers,\n        viewProviders = _ref5.viewProviders,\n        queries = _ref5.queries,\n        guards = _ref5.guards,\n        viewQueries = _ref5.viewQueries,\n        entryComponents = _ref5.entryComponents,\n        template = _ref5.template,\n        componentViewType = _ref5.componentViewType,\n        rendererType = _ref5.rendererType,\n        componentFactory = _ref5.componentFactory;\n\n    _classCallCheck(this, CompileDirectiveMetadata);\n\n    this.isHost = !!isHost;\n    this.type = type;\n    this.isComponent = isComponent;\n    this.selector = selector;\n    this.exportAs = exportAs;\n    this.changeDetection = changeDetection;\n    this.inputs = inputs;\n    this.outputs = outputs;\n    this.hostListeners = hostListeners;\n    this.hostProperties = hostProperties;\n    this.hostAttributes = hostAttributes;\n    this.providers = _normalizeArray(providers);\n    this.viewProviders = _normalizeArray(viewProviders);\n    this.queries = _normalizeArray(queries);\n    this.guards = guards;\n    this.viewQueries = _normalizeArray(viewQueries);\n    this.entryComponents = _normalizeArray(entryComponents);\n    this.template = template;\n    this.componentViewType = componentViewType;\n    this.rendererType = rendererType;\n    this.componentFactory = componentFactory;\n  }\n\n  _createClass(CompileDirectiveMetadata, [{\n    key: \"toSummary\",\n    value: function toSummary() {\n      return {\n        summaryKind: CompileSummaryKind.Directive,\n        type: this.type,\n        isComponent: this.isComponent,\n        selector: this.selector,\n        exportAs: this.exportAs,\n        inputs: this.inputs,\n        outputs: this.outputs,\n        hostListeners: this.hostListeners,\n        hostProperties: this.hostProperties,\n        hostAttributes: this.hostAttributes,\n        providers: this.providers,\n        viewProviders: this.viewProviders,\n        queries: this.queries,\n        guards: this.guards,\n        viewQueries: this.viewQueries,\n        entryComponents: this.entryComponents,\n        changeDetection: this.changeDetection,\n        template: this.template && this.template.toSummary(),\n        componentViewType: this.componentViewType,\n        rendererType: this.rendererType,\n        componentFactory: this.componentFactory\n      };\n    }\n  }], [{\n    key: \"create\",\n    value: function create(_ref6) {\n      var isHost = _ref6.isHost,\n          type = _ref6.type,\n          isComponent = _ref6.isComponent,\n          selector = _ref6.selector,\n          exportAs = _ref6.exportAs,\n          changeDetection = _ref6.changeDetection,\n          inputs = _ref6.inputs,\n          outputs = _ref6.outputs,\n          host = _ref6.host,\n          providers = _ref6.providers,\n          viewProviders = _ref6.viewProviders,\n          queries = _ref6.queries,\n          guards = _ref6.guards,\n          viewQueries = _ref6.viewQueries,\n          entryComponents = _ref6.entryComponents,\n          template = _ref6.template,\n          componentViewType = _ref6.componentViewType,\n          rendererType = _ref6.rendererType,\n          componentFactory = _ref6.componentFactory;\n      var hostListeners = {};\n      var hostProperties = {};\n      var hostAttributes = {};\n\n      if (host != null) {\n        Object.keys(host).forEach(function (key) {\n          var value = host[key];\n          var matches = key.match(HOST_REG_EXP);\n\n          if (matches === null) {\n            hostAttributes[key] = value;\n          } else if (matches[1] != null) {\n            hostProperties[matches[1]] = value;\n          } else if (matches[2] != null) {\n            hostListeners[matches[2]] = value;\n          }\n        });\n      }\n\n      var inputsMap = {};\n\n      if (inputs != null) {\n        inputs.forEach(function (bindConfig) {\n          // canonical syntax: `dirProp: elProp`\n          // if there is no `:`, use dirProp = elProp\n          var parts = splitAtColon(bindConfig, [bindConfig, bindConfig]);\n          inputsMap[parts[0]] = parts[1];\n        });\n      }\n\n      var outputsMap = {};\n\n      if (outputs != null) {\n        outputs.forEach(function (bindConfig) {\n          // canonical syntax: `dirProp: elProp`\n          // if there is no `:`, use dirProp = elProp\n          var parts = splitAtColon(bindConfig, [bindConfig, bindConfig]);\n          outputsMap[parts[0]] = parts[1];\n        });\n      }\n\n      return new CompileDirectiveMetadata({\n        isHost: isHost,\n        type: type,\n        isComponent: !!isComponent,\n        selector: selector,\n        exportAs: exportAs,\n        changeDetection: changeDetection,\n        inputs: inputsMap,\n        outputs: outputsMap,\n        hostListeners: hostListeners,\n        hostProperties: hostProperties,\n        hostAttributes: hostAttributes,\n        providers: providers,\n        viewProviders: viewProviders,\n        queries: queries,\n        guards: guards,\n        viewQueries: viewQueries,\n        entryComponents: entryComponents,\n        template: template,\n        componentViewType: componentViewType,\n        rendererType: rendererType,\n        componentFactory: componentFactory\n      });\n    }\n  }]);\n\n  return CompileDirectiveMetadata;\n}();\n\nvar CompilePipeMetadata = /*#__PURE__*/function () {\n  function CompilePipeMetadata(_ref7) {\n    var type = _ref7.type,\n        name = _ref7.name,\n        pure = _ref7.pure;\n\n    _classCallCheck(this, CompilePipeMetadata);\n\n    this.type = type;\n    this.name = name;\n    this.pure = !!pure;\n  }\n\n  _createClass(CompilePipeMetadata, [{\n    key: \"toSummary\",\n    value: function toSummary() {\n      return {\n        summaryKind: CompileSummaryKind.Pipe,\n        type: this.type,\n        name: this.name,\n        pure: this.pure\n      };\n    }\n  }]);\n\n  return CompilePipeMetadata;\n}();\n\nvar CompileShallowModuleMetadata = /*#__PURE__*/_createClass(function CompileShallowModuleMetadata() {\n  _classCallCheck(this, CompileShallowModuleMetadata);\n});\n/**\n * Metadata regarding compilation of a module.\n */\n\n\nvar CompileNgModuleMetadata = /*#__PURE__*/function () {\n  function CompileNgModuleMetadata(_ref8) {\n    var type = _ref8.type,\n        providers = _ref8.providers,\n        declaredDirectives = _ref8.declaredDirectives,\n        exportedDirectives = _ref8.exportedDirectives,\n        declaredPipes = _ref8.declaredPipes,\n        exportedPipes = _ref8.exportedPipes,\n        entryComponents = _ref8.entryComponents,\n        bootstrapComponents = _ref8.bootstrapComponents,\n        importedModules = _ref8.importedModules,\n        exportedModules = _ref8.exportedModules,\n        schemas = _ref8.schemas,\n        transitiveModule = _ref8.transitiveModule,\n        id = _ref8.id;\n\n    _classCallCheck(this, CompileNgModuleMetadata);\n\n    this.type = type || null;\n    this.declaredDirectives = _normalizeArray(declaredDirectives);\n    this.exportedDirectives = _normalizeArray(exportedDirectives);\n    this.declaredPipes = _normalizeArray(declaredPipes);\n    this.exportedPipes = _normalizeArray(exportedPipes);\n    this.providers = _normalizeArray(providers);\n    this.entryComponents = _normalizeArray(entryComponents);\n    this.bootstrapComponents = _normalizeArray(bootstrapComponents);\n    this.importedModules = _normalizeArray(importedModules);\n    this.exportedModules = _normalizeArray(exportedModules);\n    this.schemas = _normalizeArray(schemas);\n    this.id = id || null;\n    this.transitiveModule = transitiveModule || null;\n  }\n\n  _createClass(CompileNgModuleMetadata, [{\n    key: \"toSummary\",\n    value: function toSummary() {\n      var module = this.transitiveModule;\n      return {\n        summaryKind: CompileSummaryKind.NgModule,\n        type: this.type,\n        entryComponents: module.entryComponents,\n        providers: module.providers,\n        modules: module.modules,\n        exportedDirectives: module.exportedDirectives,\n        exportedPipes: module.exportedPipes\n      };\n    }\n  }]);\n\n  return CompileNgModuleMetadata;\n}();\n\nvar TransitiveCompileNgModuleMetadata = /*#__PURE__*/function () {\n  function TransitiveCompileNgModuleMetadata() {\n    _classCallCheck(this, TransitiveCompileNgModuleMetadata);\n\n    this.directivesSet = new Set();\n    this.directives = [];\n    this.exportedDirectivesSet = new Set();\n    this.exportedDirectives = [];\n    this.pipesSet = new Set();\n    this.pipes = [];\n    this.exportedPipesSet = new Set();\n    this.exportedPipes = [];\n    this.modulesSet = new Set();\n    this.modules = [];\n    this.entryComponentsSet = new Set();\n    this.entryComponents = [];\n    this.providers = [];\n  }\n\n  _createClass(TransitiveCompileNgModuleMetadata, [{\n    key: \"addProvider\",\n    value: function addProvider(provider, module) {\n      this.providers.push({\n        provider: provider,\n        module: module\n      });\n    }\n  }, {\n    key: \"addDirective\",\n    value: function addDirective(id) {\n      if (!this.directivesSet.has(id.reference)) {\n        this.directivesSet.add(id.reference);\n        this.directives.push(id);\n      }\n    }\n  }, {\n    key: \"addExportedDirective\",\n    value: function addExportedDirective(id) {\n      if (!this.exportedDirectivesSet.has(id.reference)) {\n        this.exportedDirectivesSet.add(id.reference);\n        this.exportedDirectives.push(id);\n      }\n    }\n  }, {\n    key: \"addPipe\",\n    value: function addPipe(id) {\n      if (!this.pipesSet.has(id.reference)) {\n        this.pipesSet.add(id.reference);\n        this.pipes.push(id);\n      }\n    }\n  }, {\n    key: \"addExportedPipe\",\n    value: function addExportedPipe(id) {\n      if (!this.exportedPipesSet.has(id.reference)) {\n        this.exportedPipesSet.add(id.reference);\n        this.exportedPipes.push(id);\n      }\n    }\n  }, {\n    key: \"addModule\",\n    value: function addModule(id) {\n      if (!this.modulesSet.has(id.reference)) {\n        this.modulesSet.add(id.reference);\n        this.modules.push(id);\n      }\n    }\n  }, {\n    key: \"addEntryComponent\",\n    value: function addEntryComponent(ec) {\n      if (!this.entryComponentsSet.has(ec.componentType)) {\n        this.entryComponentsSet.add(ec.componentType);\n        this.entryComponents.push(ec);\n      }\n    }\n  }]);\n\n  return TransitiveCompileNgModuleMetadata;\n}();\n\nfunction _normalizeArray(obj) {\n  return obj || [];\n}\n\nvar ProviderMeta = /*#__PURE__*/_createClass(function ProviderMeta(token, _ref9) {\n  var useClass = _ref9.useClass,\n      useValue = _ref9.useValue,\n      useExisting = _ref9.useExisting,\n      useFactory = _ref9.useFactory,\n      deps = _ref9.deps,\n      multi = _ref9.multi;\n\n  _classCallCheck(this, ProviderMeta);\n\n  this.token = token;\n  this.useClass = useClass || null;\n  this.useValue = useValue;\n  this.useExisting = useExisting;\n  this.useFactory = useFactory || null;\n  this.dependencies = deps || null;\n  this.multi = !!multi;\n});\n\nfunction flatten(list) {\n  return list.reduce(function (flat, item) {\n    var flatItem = Array.isArray(item) ? flatten(item) : item;\n    return flat.concat(flatItem);\n  }, []);\n}\n\nfunction jitSourceUrl(url) {\n  // Note: We need 3 \"/\" so that ng shows up as a separate domain\n  // in the chrome dev tools.\n  return url.replace(/(\\w+:\\/\\/[\\w:-]+)?(\\/+)?/, 'ng:///');\n}\n\nfunction templateSourceUrl(ngModuleType, compMeta, templateMeta) {\n  var url;\n\n  if (templateMeta.isInline) {\n    if (compMeta.type.reference instanceof StaticSymbol) {\n      // Note: a .ts file might contain multiple components with inline templates,\n      // so we need to give them unique urls, as these will be used for sourcemaps.\n      url = \"\".concat(compMeta.type.reference.filePath, \".\").concat(compMeta.type.reference.name, \".html\");\n    } else {\n      url = \"\".concat(identifierName(ngModuleType), \"/\").concat(identifierName(compMeta.type), \".html\");\n    }\n  } else {\n    url = templateMeta.templateUrl;\n  }\n\n  return compMeta.type.reference instanceof StaticSymbol ? url : jitSourceUrl(url);\n}\n\nfunction sharedStylesheetJitUrl(meta, id) {\n  var pathParts = meta.moduleUrl.split(/\\/\\\\/g);\n  var baseName = pathParts[pathParts.length - 1];\n  return jitSourceUrl(\"css/\".concat(id).concat(baseName, \".ngstyle.js\"));\n}\n\nfunction ngModuleJitUrl(moduleMeta) {\n  return jitSourceUrl(\"\".concat(identifierName(moduleMeta.type), \"/module.ngfactory.js\"));\n}\n\nfunction templateJitUrl(ngModuleType, compMeta) {\n  return jitSourceUrl(\"\".concat(identifierName(ngModuleType), \"/\").concat(identifierName(compMeta.type), \".ngfactory.js\"));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar CORE$1 = '@angular/core';\n\nvar Identifiers$1 = /*#__PURE__*/_createClass(function Identifiers$1() {\n  _classCallCheck(this, Identifiers$1);\n});\n/* Methods */\n\n\nIdentifiers$1.NEW_METHOD = 'factory';\nIdentifiers$1.TRANSFORM_METHOD = 'transform';\nIdentifiers$1.PATCH_DEPS = 'patchedDeps';\n/* Instructions */\n\nIdentifiers$1.namespaceHTML = {\n  name: 'ɵɵnamespaceHTML',\n  moduleName: CORE$1\n};\nIdentifiers$1.namespaceMathML = {\n  name: 'ɵɵnamespaceMathML',\n  moduleName: CORE$1\n};\nIdentifiers$1.namespaceSVG = {\n  name: 'ɵɵnamespaceSVG',\n  moduleName: CORE$1\n};\nIdentifiers$1.element = {\n  name: 'ɵɵelement',\n  moduleName: CORE$1\n};\nIdentifiers$1.elementStart = {\n  name: 'ɵɵelementStart',\n  moduleName: CORE$1\n};\nIdentifiers$1.elementEnd = {\n  name: 'ɵɵelementEnd',\n  moduleName: CORE$1\n};\nIdentifiers$1.advance = {\n  name: 'ɵɵadvance',\n  moduleName: CORE$1\n};\nIdentifiers$1.syntheticHostProperty = {\n  name: 'ɵɵsyntheticHostProperty',\n  moduleName: CORE$1\n};\nIdentifiers$1.syntheticHostListener = {\n  name: 'ɵɵsyntheticHostListener',\n  moduleName: CORE$1\n};\nIdentifiers$1.attribute = {\n  name: 'ɵɵattribute',\n  moduleName: CORE$1\n};\nIdentifiers$1.attributeInterpolate1 = {\n  name: 'ɵɵattributeInterpolate1',\n  moduleName: CORE$1\n};\nIdentifiers$1.attributeInterpolate2 = {\n  name: 'ɵɵattributeInterpolate2',\n  moduleName: CORE$1\n};\nIdentifiers$1.attributeInterpolate3 = {\n  name: 'ɵɵattributeInterpolate3',\n  moduleName: CORE$1\n};\nIdentifiers$1.attributeInterpolate4 = {\n  name: 'ɵɵattributeInterpolate4',\n  moduleName: CORE$1\n};\nIdentifiers$1.attributeInterpolate5 = {\n  name: 'ɵɵattributeInterpolate5',\n  moduleName: CORE$1\n};\nIdentifiers$1.attributeInterpolate6 = {\n  name: 'ɵɵattributeInterpolate6',\n  moduleName: CORE$1\n};\nIdentifiers$1.attributeInterpolate7 = {\n  name: 'ɵɵattributeInterpolate7',\n  moduleName: CORE$1\n};\nIdentifiers$1.attributeInterpolate8 = {\n  name: 'ɵɵattributeInterpolate8',\n  moduleName: CORE$1\n};\nIdentifiers$1.attributeInterpolateV = {\n  name: 'ɵɵattributeInterpolateV',\n  moduleName: CORE$1\n};\nIdentifiers$1.classProp = {\n  name: 'ɵɵclassProp',\n  moduleName: CORE$1\n};\nIdentifiers$1.elementContainerStart = {\n  name: 'ɵɵelementContainerStart',\n  moduleName: CORE$1\n};\nIdentifiers$1.elementContainerEnd = {\n  name: 'ɵɵelementContainerEnd',\n  moduleName: CORE$1\n};\nIdentifiers$1.elementContainer = {\n  name: 'ɵɵelementContainer',\n  moduleName: CORE$1\n};\nIdentifiers$1.styleMap = {\n  name: 'ɵɵstyleMap',\n  moduleName: CORE$1\n};\nIdentifiers$1.styleMapInterpolate1 = {\n  name: 'ɵɵstyleMapInterpolate1',\n  moduleName: CORE$1\n};\nIdentifiers$1.styleMapInterpolate2 = {\n  name: 'ɵɵstyleMapInterpolate2',\n  moduleName: CORE$1\n};\nIdentifiers$1.styleMapInterpolate3 = {\n  name: 'ɵɵstyleMapInterpolate3',\n  moduleName: CORE$1\n};\nIdentifiers$1.styleMapInterpolate4 = {\n  name: 'ɵɵstyleMapInterpolate4',\n  moduleName: CORE$1\n};\nIdentifiers$1.styleMapInterpolate5 = {\n  name: 'ɵɵstyleMapInterpolate5',\n  moduleName: CORE$1\n};\nIdentifiers$1.styleMapInterpolate6 = {\n  name: 'ɵɵstyleMapInterpolate6',\n  moduleName: CORE$1\n};\nIdentifiers$1.styleMapInterpolate7 = {\n  name: 'ɵɵstyleMapInterpolate7',\n  moduleName: CORE$1\n};\nIdentifiers$1.styleMapInterpolate8 = {\n  name: 'ɵɵstyleMapInterpolate8',\n  moduleName: CORE$1\n};\nIdentifiers$1.styleMapInterpolateV = {\n  name: 'ɵɵstyleMapInterpolateV',\n  moduleName: CORE$1\n};\nIdentifiers$1.classMap = {\n  name: 'ɵɵclassMap',\n  moduleName: CORE$1\n};\nIdentifiers$1.classMapInterpolate1 = {\n  name: 'ɵɵclassMapInterpolate1',\n  moduleName: CORE$1\n};\nIdentifiers$1.classMapInterpolate2 = {\n  name: 'ɵɵclassMapInterpolate2',\n  moduleName: CORE$1\n};\nIdentifiers$1.classMapInterpolate3 = {\n  name: 'ɵɵclassMapInterpolate3',\n  moduleName: CORE$1\n};\nIdentifiers$1.classMapInterpolate4 = {\n  name: 'ɵɵclassMapInterpolate4',\n  moduleName: CORE$1\n};\nIdentifiers$1.classMapInterpolate5 = {\n  name: 'ɵɵclassMapInterpolate5',\n  moduleName: CORE$1\n};\nIdentifiers$1.classMapInterpolate6 = {\n  name: 'ɵɵclassMapInterpolate6',\n  moduleName: CORE$1\n};\nIdentifiers$1.classMapInterpolate7 = {\n  name: 'ɵɵclassMapInterpolate7',\n  moduleName: CORE$1\n};\nIdentifiers$1.classMapInterpolate8 = {\n  name: 'ɵɵclassMapInterpolate8',\n  moduleName: CORE$1\n};\nIdentifiers$1.classMapInterpolateV = {\n  name: 'ɵɵclassMapInterpolateV',\n  moduleName: CORE$1\n};\nIdentifiers$1.styleProp = {\n  name: 'ɵɵstyleProp',\n  moduleName: CORE$1\n};\nIdentifiers$1.stylePropInterpolate1 = {\n  name: 'ɵɵstylePropInterpolate1',\n  moduleName: CORE$1\n};\nIdentifiers$1.stylePropInterpolate2 = {\n  name: 'ɵɵstylePropInterpolate2',\n  moduleName: CORE$1\n};\nIdentifiers$1.stylePropInterpolate3 = {\n  name: 'ɵɵstylePropInterpolate3',\n  moduleName: CORE$1\n};\nIdentifiers$1.stylePropInterpolate4 = {\n  name: 'ɵɵstylePropInterpolate4',\n  moduleName: CORE$1\n};\nIdentifiers$1.stylePropInterpolate5 = {\n  name: 'ɵɵstylePropInterpolate5',\n  moduleName: CORE$1\n};\nIdentifiers$1.stylePropInterpolate6 = {\n  name: 'ɵɵstylePropInterpolate6',\n  moduleName: CORE$1\n};\nIdentifiers$1.stylePropInterpolate7 = {\n  name: 'ɵɵstylePropInterpolate7',\n  moduleName: CORE$1\n};\nIdentifiers$1.stylePropInterpolate8 = {\n  name: 'ɵɵstylePropInterpolate8',\n  moduleName: CORE$1\n};\nIdentifiers$1.stylePropInterpolateV = {\n  name: 'ɵɵstylePropInterpolateV',\n  moduleName: CORE$1\n};\nIdentifiers$1.nextContext = {\n  name: 'ɵɵnextContext',\n  moduleName: CORE$1\n};\nIdentifiers$1.templateCreate = {\n  name: 'ɵɵtemplate',\n  moduleName: CORE$1\n};\nIdentifiers$1.text = {\n  name: 'ɵɵtext',\n  moduleName: CORE$1\n};\nIdentifiers$1.enableBindings = {\n  name: 'ɵɵenableBindings',\n  moduleName: CORE$1\n};\nIdentifiers$1.disableBindings = {\n  name: 'ɵɵdisableBindings',\n  moduleName: CORE$1\n};\nIdentifiers$1.getCurrentView = {\n  name: 'ɵɵgetCurrentView',\n  moduleName: CORE$1\n};\nIdentifiers$1.textInterpolate = {\n  name: 'ɵɵtextInterpolate',\n  moduleName: CORE$1\n};\nIdentifiers$1.textInterpolate1 = {\n  name: 'ɵɵtextInterpolate1',\n  moduleName: CORE$1\n};\nIdentifiers$1.textInterpolate2 = {\n  name: 'ɵɵtextInterpolate2',\n  moduleName: CORE$1\n};\nIdentifiers$1.textInterpolate3 = {\n  name: 'ɵɵtextInterpolate3',\n  moduleName: CORE$1\n};\nIdentifiers$1.textInterpolate4 = {\n  name: 'ɵɵtextInterpolate4',\n  moduleName: CORE$1\n};\nIdentifiers$1.textInterpolate5 = {\n  name: 'ɵɵtextInterpolate5',\n  moduleName: CORE$1\n};\nIdentifiers$1.textInterpolate6 = {\n  name: 'ɵɵtextInterpolate6',\n  moduleName: CORE$1\n};\nIdentifiers$1.textInterpolate7 = {\n  name: 'ɵɵtextInterpolate7',\n  moduleName: CORE$1\n};\nIdentifiers$1.textInterpolate8 = {\n  name: 'ɵɵtextInterpolate8',\n  moduleName: CORE$1\n};\nIdentifiers$1.textInterpolateV = {\n  name: 'ɵɵtextInterpolateV',\n  moduleName: CORE$1\n};\nIdentifiers$1.restoreView = {\n  name: 'ɵɵrestoreView',\n  moduleName: CORE$1\n};\nIdentifiers$1.pureFunction0 = {\n  name: 'ɵɵpureFunction0',\n  moduleName: CORE$1\n};\nIdentifiers$1.pureFunction1 = {\n  name: 'ɵɵpureFunction1',\n  moduleName: CORE$1\n};\nIdentifiers$1.pureFunction2 = {\n  name: 'ɵɵpureFunction2',\n  moduleName: CORE$1\n};\nIdentifiers$1.pureFunction3 = {\n  name: 'ɵɵpureFunction3',\n  moduleName: CORE$1\n};\nIdentifiers$1.pureFunction4 = {\n  name: 'ɵɵpureFunction4',\n  moduleName: CORE$1\n};\nIdentifiers$1.pureFunction5 = {\n  name: 'ɵɵpureFunction5',\n  moduleName: CORE$1\n};\nIdentifiers$1.pureFunction6 = {\n  name: 'ɵɵpureFunction6',\n  moduleName: CORE$1\n};\nIdentifiers$1.pureFunction7 = {\n  name: 'ɵɵpureFunction7',\n  moduleName: CORE$1\n};\nIdentifiers$1.pureFunction8 = {\n  name: 'ɵɵpureFunction8',\n  moduleName: CORE$1\n};\nIdentifiers$1.pureFunctionV = {\n  name: 'ɵɵpureFunctionV',\n  moduleName: CORE$1\n};\nIdentifiers$1.pipeBind1 = {\n  name: 'ɵɵpipeBind1',\n  moduleName: CORE$1\n};\nIdentifiers$1.pipeBind2 = {\n  name: 'ɵɵpipeBind2',\n  moduleName: CORE$1\n};\nIdentifiers$1.pipeBind3 = {\n  name: 'ɵɵpipeBind3',\n  moduleName: CORE$1\n};\nIdentifiers$1.pipeBind4 = {\n  name: 'ɵɵpipeBind4',\n  moduleName: CORE$1\n};\nIdentifiers$1.pipeBindV = {\n  name: 'ɵɵpipeBindV',\n  moduleName: CORE$1\n};\nIdentifiers$1.hostProperty = {\n  name: 'ɵɵhostProperty',\n  moduleName: CORE$1\n};\nIdentifiers$1.property = {\n  name: 'ɵɵproperty',\n  moduleName: CORE$1\n};\nIdentifiers$1.propertyInterpolate = {\n  name: 'ɵɵpropertyInterpolate',\n  moduleName: CORE$1\n};\nIdentifiers$1.propertyInterpolate1 = {\n  name: 'ɵɵpropertyInterpolate1',\n  moduleName: CORE$1\n};\nIdentifiers$1.propertyInterpolate2 = {\n  name: 'ɵɵpropertyInterpolate2',\n  moduleName: CORE$1\n};\nIdentifiers$1.propertyInterpolate3 = {\n  name: 'ɵɵpropertyInterpolate3',\n  moduleName: CORE$1\n};\nIdentifiers$1.propertyInterpolate4 = {\n  name: 'ɵɵpropertyInterpolate4',\n  moduleName: CORE$1\n};\nIdentifiers$1.propertyInterpolate5 = {\n  name: 'ɵɵpropertyInterpolate5',\n  moduleName: CORE$1\n};\nIdentifiers$1.propertyInterpolate6 = {\n  name: 'ɵɵpropertyInterpolate6',\n  moduleName: CORE$1\n};\nIdentifiers$1.propertyInterpolate7 = {\n  name: 'ɵɵpropertyInterpolate7',\n  moduleName: CORE$1\n};\nIdentifiers$1.propertyInterpolate8 = {\n  name: 'ɵɵpropertyInterpolate8',\n  moduleName: CORE$1\n};\nIdentifiers$1.propertyInterpolateV = {\n  name: 'ɵɵpropertyInterpolateV',\n  moduleName: CORE$1\n};\nIdentifiers$1.i18n = {\n  name: 'ɵɵi18n',\n  moduleName: CORE$1\n};\nIdentifiers$1.i18nAttributes = {\n  name: 'ɵɵi18nAttributes',\n  moduleName: CORE$1\n};\nIdentifiers$1.i18nExp = {\n  name: 'ɵɵi18nExp',\n  moduleName: CORE$1\n};\nIdentifiers$1.i18nStart = {\n  name: 'ɵɵi18nStart',\n  moduleName: CORE$1\n};\nIdentifiers$1.i18nEnd = {\n  name: 'ɵɵi18nEnd',\n  moduleName: CORE$1\n};\nIdentifiers$1.i18nApply = {\n  name: 'ɵɵi18nApply',\n  moduleName: CORE$1\n};\nIdentifiers$1.i18nPostprocess = {\n  name: 'ɵɵi18nPostprocess',\n  moduleName: CORE$1\n};\nIdentifiers$1.pipe = {\n  name: 'ɵɵpipe',\n  moduleName: CORE$1\n};\nIdentifiers$1.projection = {\n  name: 'ɵɵprojection',\n  moduleName: CORE$1\n};\nIdentifiers$1.projectionDef = {\n  name: 'ɵɵprojectionDef',\n  moduleName: CORE$1\n};\nIdentifiers$1.reference = {\n  name: 'ɵɵreference',\n  moduleName: CORE$1\n};\nIdentifiers$1.inject = {\n  name: 'ɵɵinject',\n  moduleName: CORE$1\n};\nIdentifiers$1.injectAttribute = {\n  name: 'ɵɵinjectAttribute',\n  moduleName: CORE$1\n};\nIdentifiers$1.injectPipeChangeDetectorRef = {\n  name: 'ɵɵinjectPipeChangeDetectorRef',\n  moduleName: CORE$1\n};\nIdentifiers$1.directiveInject = {\n  name: 'ɵɵdirectiveInject',\n  moduleName: CORE$1\n};\nIdentifiers$1.invalidFactory = {\n  name: 'ɵɵinvalidFactory',\n  moduleName: CORE$1\n};\nIdentifiers$1.invalidFactoryDep = {\n  name: 'ɵɵinvalidFactoryDep',\n  moduleName: CORE$1\n};\nIdentifiers$1.templateRefExtractor = {\n  name: 'ɵɵtemplateRefExtractor',\n  moduleName: CORE$1\n};\nIdentifiers$1.resolveWindow = {\n  name: 'ɵɵresolveWindow',\n  moduleName: CORE$1\n};\nIdentifiers$1.resolveDocument = {\n  name: 'ɵɵresolveDocument',\n  moduleName: CORE$1\n};\nIdentifiers$1.resolveBody = {\n  name: 'ɵɵresolveBody',\n  moduleName: CORE$1\n};\nIdentifiers$1.defineComponent = {\n  name: 'ɵɵdefineComponent',\n  moduleName: CORE$1\n};\nIdentifiers$1.setComponentScope = {\n  name: 'ɵɵsetComponentScope',\n  moduleName: CORE$1\n};\nIdentifiers$1.ComponentDefWithMeta = {\n  name: 'ɵɵComponentDefWithMeta',\n  moduleName: CORE$1\n};\nIdentifiers$1.FactoryDef = {\n  name: 'ɵɵFactoryDef',\n  moduleName: CORE$1\n};\nIdentifiers$1.defineDirective = {\n  name: 'ɵɵdefineDirective',\n  moduleName: CORE$1\n};\nIdentifiers$1.DirectiveDefWithMeta = {\n  name: 'ɵɵDirectiveDefWithMeta',\n  moduleName: CORE$1\n};\nIdentifiers$1.InjectorDef = {\n  name: 'ɵɵInjectorDef',\n  moduleName: CORE$1\n};\nIdentifiers$1.defineInjector = {\n  name: 'ɵɵdefineInjector',\n  moduleName: CORE$1\n};\nIdentifiers$1.NgModuleDefWithMeta = {\n  name: 'ɵɵNgModuleDefWithMeta',\n  moduleName: CORE$1\n};\nIdentifiers$1.ModuleWithProviders = {\n  name: 'ModuleWithProviders',\n  moduleName: CORE$1\n};\nIdentifiers$1.defineNgModule = {\n  name: 'ɵɵdefineNgModule',\n  moduleName: CORE$1\n};\nIdentifiers$1.setNgModuleScope = {\n  name: 'ɵɵsetNgModuleScope',\n  moduleName: CORE$1\n};\nIdentifiers$1.PipeDefWithMeta = {\n  name: 'ɵɵPipeDefWithMeta',\n  moduleName: CORE$1\n};\nIdentifiers$1.definePipe = {\n  name: 'ɵɵdefinePipe',\n  moduleName: CORE$1\n};\nIdentifiers$1.queryRefresh = {\n  name: 'ɵɵqueryRefresh',\n  moduleName: CORE$1\n};\nIdentifiers$1.viewQuery = {\n  name: 'ɵɵviewQuery',\n  moduleName: CORE$1\n};\nIdentifiers$1.staticViewQuery = {\n  name: 'ɵɵstaticViewQuery',\n  moduleName: CORE$1\n};\nIdentifiers$1.staticContentQuery = {\n  name: 'ɵɵstaticContentQuery',\n  moduleName: CORE$1\n};\nIdentifiers$1.loadQuery = {\n  name: 'ɵɵloadQuery',\n  moduleName: CORE$1\n};\nIdentifiers$1.contentQuery = {\n  name: 'ɵɵcontentQuery',\n  moduleName: CORE$1\n};\nIdentifiers$1.NgOnChangesFeature = {\n  name: 'ɵɵNgOnChangesFeature',\n  moduleName: CORE$1\n};\nIdentifiers$1.InheritDefinitionFeature = {\n  name: 'ɵɵInheritDefinitionFeature',\n  moduleName: CORE$1\n};\nIdentifiers$1.CopyDefinitionFeature = {\n  name: 'ɵɵCopyDefinitionFeature',\n  moduleName: CORE$1\n};\nIdentifiers$1.ProvidersFeature = {\n  name: 'ɵɵProvidersFeature',\n  moduleName: CORE$1\n};\nIdentifiers$1.listener = {\n  name: 'ɵɵlistener',\n  moduleName: CORE$1\n};\nIdentifiers$1.getFactoryOf = {\n  name: 'ɵɵgetFactoryOf',\n  moduleName: CORE$1\n};\nIdentifiers$1.getInheritedFactory = {\n  name: 'ɵɵgetInheritedFactory',\n  moduleName: CORE$1\n}; // sanitization-related functions\n\nIdentifiers$1.sanitizeHtml = {\n  name: 'ɵɵsanitizeHtml',\n  moduleName: CORE$1\n};\nIdentifiers$1.sanitizeStyle = {\n  name: 'ɵɵsanitizeStyle',\n  moduleName: CORE$1\n};\nIdentifiers$1.sanitizeResourceUrl = {\n  name: 'ɵɵsanitizeResourceUrl',\n  moduleName: CORE$1\n};\nIdentifiers$1.sanitizeScript = {\n  name: 'ɵɵsanitizeScript',\n  moduleName: CORE$1\n};\nIdentifiers$1.sanitizeUrl = {\n  name: 'ɵɵsanitizeUrl',\n  moduleName: CORE$1\n};\nIdentifiers$1.sanitizeUrlOrResourceUrl = {\n  name: 'ɵɵsanitizeUrlOrResourceUrl',\n  moduleName: CORE$1\n};\nIdentifiers$1.trustConstantHtml = {\n  name: 'ɵɵtrustConstantHtml',\n  moduleName: CORE$1\n};\nIdentifiers$1.trustConstantScript = {\n  name: 'ɵɵtrustConstantScript',\n  moduleName: CORE$1\n};\nIdentifiers$1.trustConstantResourceUrl = {\n  name: 'ɵɵtrustConstantResourceUrl',\n  moduleName: CORE$1\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Convert an object map with `Expression` values into a `LiteralMapExpr`.\n */\n\nfunction mapToMapExpression(map) {\n  var result = Object.keys(map).map(function (key) {\n    return {\n      key: key,\n      // The assertion here is because really TypeScript doesn't allow us to express that if the\n      // key is present, it will have a value, but this is true in reality.\n      value: map[key],\n      quoted: false\n    };\n  });\n  return literalMap(result);\n}\n/**\n * Convert metadata into an `Expression` in the given `OutputContext`.\n *\n * This operation will handle arrays, references to symbols, or literal `null` or `undefined`.\n */\n\n\nfunction convertMetaToOutput(meta, ctx) {\n  if (Array.isArray(meta)) {\n    return literalArr(meta.map(function (entry) {\n      return convertMetaToOutput(entry, ctx);\n    }));\n  }\n\n  if (meta instanceof StaticSymbol) {\n    return ctx.importExpr(meta);\n  }\n\n  if (meta == null) {\n    return literal(meta);\n  }\n\n  throw new Error(\"Internal error: Unsupported or unknown metadata: \".concat(meta));\n}\n\nfunction typeWithParameters(type, numParams) {\n  if (numParams === 0) {\n    return expressionType(type);\n  }\n\n  var params = [];\n\n  for (var i = 0; i < numParams; i++) {\n    params.push(DYNAMIC_TYPE);\n  }\n\n  return expressionType(type, undefined, params);\n}\n\nvar ANIMATE_SYMBOL_PREFIX = '@';\n\nfunction prepareSyntheticPropertyName(name) {\n  return \"\".concat(ANIMATE_SYMBOL_PREFIX).concat(name);\n}\n\nfunction prepareSyntheticListenerName(name, phase) {\n  return \"\".concat(ANIMATE_SYMBOL_PREFIX).concat(name, \".\").concat(phase);\n}\n\nfunction isSyntheticPropertyOrListener(name) {\n  return name.charAt(0) == ANIMATE_SYMBOL_PREFIX;\n}\n\nfunction getSyntheticPropertyName(name) {\n  // this will strip out listener phase values...\n  // @foo.start => @foo\n  var i = name.indexOf('.');\n  name = i > 0 ? name.substring(0, i) : name;\n\n  if (name.charAt(0) !== ANIMATE_SYMBOL_PREFIX) {\n    name = ANIMATE_SYMBOL_PREFIX + name;\n  }\n\n  return name;\n}\n\nfunction prepareSyntheticListenerFunctionName(name, phase) {\n  return \"animation_\".concat(name, \"_\").concat(phase);\n}\n\nfunction jitOnlyGuardedExpression(expr) {\n  var ngJitMode = new ExternalExpr({\n    name: 'ngJitMode',\n    moduleName: null\n  });\n  var jitFlagNotDefined = new BinaryOperatorExpr(BinaryOperator.Identical, new TypeofExpr(ngJitMode), literal('undefined'));\n  var jitFlagUndefinedOrTrue = new BinaryOperatorExpr(BinaryOperator.Or, jitFlagNotDefined, ngJitMode,\n  /* type */\n  undefined,\n  /* sourceSpan */\n  undefined, true);\n  return new BinaryOperatorExpr(BinaryOperator.And, jitFlagUndefinedOrTrue, expr);\n}\n\nfunction wrapReference(value) {\n  var wrapped = new WrappedNodeExpr(value);\n  return {\n    value: wrapped,\n    type: wrapped\n  };\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar Text = /*#__PURE__*/function () {\n  function Text(value, sourceSpan) {\n    _classCallCheck(this, Text);\n\n    this.value = value;\n    this.sourceSpan = sourceSpan;\n  }\n\n  _createClass(Text, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      return visitor.visitText(this);\n    }\n  }]);\n\n  return Text;\n}();\n\nvar BoundText = /*#__PURE__*/function () {\n  function BoundText(value, sourceSpan, i18n) {\n    _classCallCheck(this, BoundText);\n\n    this.value = value;\n    this.sourceSpan = sourceSpan;\n    this.i18n = i18n;\n  }\n\n  _createClass(BoundText, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      return visitor.visitBoundText(this);\n    }\n  }]);\n\n  return BoundText;\n}();\n\nvar TextAttribute = /*#__PURE__*/function () {\n  function TextAttribute(name, value, sourceSpan, valueSpan, i18n) {\n    _classCallCheck(this, TextAttribute);\n\n    this.name = name;\n    this.value = value;\n    this.sourceSpan = sourceSpan;\n    this.valueSpan = valueSpan;\n    this.i18n = i18n;\n  }\n\n  _createClass(TextAttribute, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      return visitor.visitTextAttribute(this);\n    }\n  }]);\n\n  return TextAttribute;\n}();\n\nvar BoundAttribute = /*#__PURE__*/function () {\n  function BoundAttribute(name, type, securityContext, value, unit, sourceSpan, keySpan, valueSpan, i18n) {\n    _classCallCheck(this, BoundAttribute);\n\n    this.name = name;\n    this.type = type;\n    this.securityContext = securityContext;\n    this.value = value;\n    this.unit = unit;\n    this.sourceSpan = sourceSpan;\n    this.keySpan = keySpan;\n    this.valueSpan = valueSpan;\n    this.i18n = i18n;\n  }\n\n  _createClass(BoundAttribute, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      return visitor.visitBoundAttribute(this);\n    }\n  }], [{\n    key: \"fromBoundElementProperty\",\n    value: function fromBoundElementProperty(prop, i18n) {\n      if (prop.keySpan === undefined) {\n        throw new Error(\"Unexpected state: keySpan must be defined for bound attributes but was not for \".concat(prop.name, \": \").concat(prop.sourceSpan));\n      }\n\n      return new BoundAttribute(prop.name, prop.type, prop.securityContext, prop.value, prop.unit, prop.sourceSpan, prop.keySpan, prop.valueSpan, i18n);\n    }\n  }]);\n\n  return BoundAttribute;\n}();\n\nvar BoundEvent = /*#__PURE__*/function () {\n  function BoundEvent(name, type, handler, target, phase, sourceSpan, handlerSpan) {\n    _classCallCheck(this, BoundEvent);\n\n    this.name = name;\n    this.type = type;\n    this.handler = handler;\n    this.target = target;\n    this.phase = phase;\n    this.sourceSpan = sourceSpan;\n    this.handlerSpan = handlerSpan;\n  }\n\n  _createClass(BoundEvent, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      return visitor.visitBoundEvent(this);\n    }\n  }], [{\n    key: \"fromParsedEvent\",\n    value: function fromParsedEvent(event) {\n      var target = event.type === 0\n      /* Regular */\n      ? event.targetOrPhase : null;\n      var phase = event.type === 1\n      /* Animation */\n      ? event.targetOrPhase : null;\n      return new BoundEvent(event.name, event.type, event.handler, target, phase, event.sourceSpan, event.handlerSpan);\n    }\n  }]);\n\n  return BoundEvent;\n}();\n\nvar Element = /*#__PURE__*/function () {\n  function Element(name, attributes, inputs, outputs, children, references, sourceSpan, startSourceSpan, endSourceSpan, i18n) {\n    _classCallCheck(this, Element);\n\n    this.name = name;\n    this.attributes = attributes;\n    this.inputs = inputs;\n    this.outputs = outputs;\n    this.children = children;\n    this.references = references;\n    this.sourceSpan = sourceSpan;\n    this.startSourceSpan = startSourceSpan;\n    this.endSourceSpan = endSourceSpan;\n    this.i18n = i18n;\n  }\n\n  _createClass(Element, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      return visitor.visitElement(this);\n    }\n  }]);\n\n  return Element;\n}();\n\nvar Template = /*#__PURE__*/function () {\n  function Template(tagName, attributes, inputs, outputs, templateAttrs, children, references, variables, sourceSpan, startSourceSpan, endSourceSpan, i18n) {\n    _classCallCheck(this, Template);\n\n    this.tagName = tagName;\n    this.attributes = attributes;\n    this.inputs = inputs;\n    this.outputs = outputs;\n    this.templateAttrs = templateAttrs;\n    this.children = children;\n    this.references = references;\n    this.variables = variables;\n    this.sourceSpan = sourceSpan;\n    this.startSourceSpan = startSourceSpan;\n    this.endSourceSpan = endSourceSpan;\n    this.i18n = i18n;\n  }\n\n  _createClass(Template, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      return visitor.visitTemplate(this);\n    }\n  }]);\n\n  return Template;\n}();\n\nvar Content = /*#__PURE__*/function () {\n  function Content(selector, attributes, sourceSpan, i18n) {\n    _classCallCheck(this, Content);\n\n    this.selector = selector;\n    this.attributes = attributes;\n    this.sourceSpan = sourceSpan;\n    this.i18n = i18n;\n    this.name = 'ng-content';\n  }\n\n  _createClass(Content, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      return visitor.visitContent(this);\n    }\n  }]);\n\n  return Content;\n}();\n\nvar Variable = /*#__PURE__*/function () {\n  function Variable(name, value, sourceSpan, keySpan, valueSpan) {\n    _classCallCheck(this, Variable);\n\n    this.name = name;\n    this.value = value;\n    this.sourceSpan = sourceSpan;\n    this.keySpan = keySpan;\n    this.valueSpan = valueSpan;\n  }\n\n  _createClass(Variable, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      return visitor.visitVariable(this);\n    }\n  }]);\n\n  return Variable;\n}();\n\nvar Reference = /*#__PURE__*/function () {\n  function Reference(name, value, sourceSpan, valueSpan) {\n    _classCallCheck(this, Reference);\n\n    this.name = name;\n    this.value = value;\n    this.sourceSpan = sourceSpan;\n    this.valueSpan = valueSpan;\n  }\n\n  _createClass(Reference, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      return visitor.visitReference(this);\n    }\n  }]);\n\n  return Reference;\n}();\n\nvar Icu = /*#__PURE__*/function () {\n  function Icu(vars, placeholders, sourceSpan, i18n) {\n    _classCallCheck(this, Icu);\n\n    this.vars = vars;\n    this.placeholders = placeholders;\n    this.sourceSpan = sourceSpan;\n    this.i18n = i18n;\n  }\n\n  _createClass(Icu, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      return visitor.visitIcu(this);\n    }\n  }]);\n\n  return Icu;\n}();\n\nvar NullVisitor = /*#__PURE__*/function () {\n  function NullVisitor() {\n    _classCallCheck(this, NullVisitor);\n  }\n\n  _createClass(NullVisitor, [{\n    key: \"visitElement\",\n    value: function visitElement(element) {}\n  }, {\n    key: \"visitTemplate\",\n    value: function visitTemplate(template) {}\n  }, {\n    key: \"visitContent\",\n    value: function visitContent(content) {}\n  }, {\n    key: \"visitVariable\",\n    value: function visitVariable(variable) {}\n  }, {\n    key: \"visitReference\",\n    value: function visitReference(reference) {}\n  }, {\n    key: \"visitTextAttribute\",\n    value: function visitTextAttribute(attribute) {}\n  }, {\n    key: \"visitBoundAttribute\",\n    value: function visitBoundAttribute(attribute) {}\n  }, {\n    key: \"visitBoundEvent\",\n    value: function visitBoundEvent(attribute) {}\n  }, {\n    key: \"visitText\",\n    value: function visitText(text) {}\n  }, {\n    key: \"visitBoundText\",\n    value: function visitBoundText(text) {}\n  }, {\n    key: \"visitIcu\",\n    value: function visitIcu(icu) {}\n  }]);\n\n  return NullVisitor;\n}();\n\nvar RecursiveVisitor = /*#__PURE__*/function () {\n  function RecursiveVisitor() {\n    _classCallCheck(this, RecursiveVisitor);\n  }\n\n  _createClass(RecursiveVisitor, [{\n    key: \"visitElement\",\n    value: function visitElement(element) {\n      visitAll(this, element.attributes);\n      visitAll(this, element.children);\n      visitAll(this, element.references);\n    }\n  }, {\n    key: \"visitTemplate\",\n    value: function visitTemplate(template) {\n      visitAll(this, template.attributes);\n      visitAll(this, template.children);\n      visitAll(this, template.references);\n      visitAll(this, template.variables);\n    }\n  }, {\n    key: \"visitContent\",\n    value: function visitContent(content) {}\n  }, {\n    key: \"visitVariable\",\n    value: function visitVariable(variable) {}\n  }, {\n    key: \"visitReference\",\n    value: function visitReference(reference) {}\n  }, {\n    key: \"visitTextAttribute\",\n    value: function visitTextAttribute(attribute) {}\n  }, {\n    key: \"visitBoundAttribute\",\n    value: function visitBoundAttribute(attribute) {}\n  }, {\n    key: \"visitBoundEvent\",\n    value: function visitBoundEvent(attribute) {}\n  }, {\n    key: \"visitText\",\n    value: function visitText(text) {}\n  }, {\n    key: \"visitBoundText\",\n    value: function visitBoundText(text) {}\n  }, {\n    key: \"visitIcu\",\n    value: function visitIcu(icu) {}\n  }]);\n\n  return RecursiveVisitor;\n}();\n\nvar TransformVisitor = /*#__PURE__*/function () {\n  function TransformVisitor() {\n    _classCallCheck(this, TransformVisitor);\n  }\n\n  _createClass(TransformVisitor, [{\n    key: \"visitElement\",\n    value: function visitElement(element) {\n      var newAttributes = transformAll(this, element.attributes);\n      var newInputs = transformAll(this, element.inputs);\n      var newOutputs = transformAll(this, element.outputs);\n      var newChildren = transformAll(this, element.children);\n      var newReferences = transformAll(this, element.references);\n\n      if (newAttributes != element.attributes || newInputs != element.inputs || newOutputs != element.outputs || newChildren != element.children || newReferences != element.references) {\n        return new Element(element.name, newAttributes, newInputs, newOutputs, newChildren, newReferences, element.sourceSpan, element.startSourceSpan, element.endSourceSpan);\n      }\n\n      return element;\n    }\n  }, {\n    key: \"visitTemplate\",\n    value: function visitTemplate(template) {\n      var newAttributes = transformAll(this, template.attributes);\n      var newInputs = transformAll(this, template.inputs);\n      var newOutputs = transformAll(this, template.outputs);\n      var newTemplateAttrs = transformAll(this, template.templateAttrs);\n      var newChildren = transformAll(this, template.children);\n      var newReferences = transformAll(this, template.references);\n      var newVariables = transformAll(this, template.variables);\n\n      if (newAttributes != template.attributes || newInputs != template.inputs || newOutputs != template.outputs || newTemplateAttrs != template.templateAttrs || newChildren != template.children || newReferences != template.references || newVariables != template.variables) {\n        return new Template(template.tagName, newAttributes, newInputs, newOutputs, newTemplateAttrs, newChildren, newReferences, newVariables, template.sourceSpan, template.startSourceSpan, template.endSourceSpan);\n      }\n\n      return template;\n    }\n  }, {\n    key: \"visitContent\",\n    value: function visitContent(content) {\n      return content;\n    }\n  }, {\n    key: \"visitVariable\",\n    value: function visitVariable(variable) {\n      return variable;\n    }\n  }, {\n    key: \"visitReference\",\n    value: function visitReference(reference) {\n      return reference;\n    }\n  }, {\n    key: \"visitTextAttribute\",\n    value: function visitTextAttribute(attribute) {\n      return attribute;\n    }\n  }, {\n    key: \"visitBoundAttribute\",\n    value: function visitBoundAttribute(attribute) {\n      return attribute;\n    }\n  }, {\n    key: \"visitBoundEvent\",\n    value: function visitBoundEvent(attribute) {\n      return attribute;\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text) {\n      return text;\n    }\n  }, {\n    key: \"visitBoundText\",\n    value: function visitBoundText(text) {\n      return text;\n    }\n  }, {\n    key: \"visitIcu\",\n    value: function visitIcu(icu) {\n      return icu;\n    }\n  }]);\n\n  return TransformVisitor;\n}();\n\nfunction visitAll(visitor, nodes) {\n  var result = [];\n\n  if (visitor.visit) {\n    var _iterator3 = _createForOfIteratorHelper(nodes),\n        _step3;\n\n    try {\n      for (_iterator3.s(); !(_step3 = _iterator3.n()).done;) {\n        var node = _step3.value;\n        var newNode = visitor.visit(node) || node.visit(visitor);\n      }\n    } catch (err) {\n      _iterator3.e(err);\n    } finally {\n      _iterator3.f();\n    }\n  } else {\n    var _iterator4 = _createForOfIteratorHelper(nodes),\n        _step4;\n\n    try {\n      for (_iterator4.s(); !(_step4 = _iterator4.n()).done;) {\n        var _node = _step4.value;\n\n        var _newNode = _node.visit(visitor);\n\n        if (_newNode) {\n          result.push(_newNode);\n        }\n      }\n    } catch (err) {\n      _iterator4.e(err);\n    } finally {\n      _iterator4.f();\n    }\n  }\n\n  return result;\n}\n\nfunction transformAll(visitor, nodes) {\n  var result = [];\n  var changed = false;\n\n  var _iterator5 = _createForOfIteratorHelper(nodes),\n      _step5;\n\n  try {\n    for (_iterator5.s(); !(_step5 = _iterator5.n()).done;) {\n      var node = _step5.value;\n      var newNode = node.visit(visitor);\n\n      if (newNode) {\n        result.push(newNode);\n      }\n\n      changed = changed || newNode != node;\n    }\n  } catch (err) {\n    _iterator5.e(err);\n  } finally {\n    _iterator5.f();\n  }\n\n  return changed ? result : nodes;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar Message = /*#__PURE__*/_createClass(\n/**\n * @param nodes message AST\n * @param placeholders maps placeholder names to static content and their source spans\n * @param placeholderToMessage maps placeholder names to messages (used for nested ICU messages)\n * @param meaning\n * @param description\n * @param customId\n */\nfunction Message(nodes, placeholders, placeholderToMessage, meaning, description, customId) {\n  _classCallCheck(this, Message);\n\n  this.nodes = nodes;\n  this.placeholders = placeholders;\n  this.placeholderToMessage = placeholderToMessage;\n  this.meaning = meaning;\n  this.description = description;\n  this.customId = customId;\n  this.id = this.customId;\n  /** The ids to use if there are no custom id and if `i18nLegacyMessageIdFormat` is not empty */\n\n  this.legacyIds = [];\n\n  if (nodes.length) {\n    this.sources = [{\n      filePath: nodes[0].sourceSpan.start.file.url,\n      startLine: nodes[0].sourceSpan.start.line + 1,\n      startCol: nodes[0].sourceSpan.start.col + 1,\n      endLine: nodes[nodes.length - 1].sourceSpan.end.line + 1,\n      endCol: nodes[0].sourceSpan.start.col + 1\n    }];\n  } else {\n    this.sources = [];\n  }\n});\n\nvar Text$1 = /*#__PURE__*/function () {\n  function Text$1(value, sourceSpan) {\n    _classCallCheck(this, Text$1);\n\n    this.value = value;\n    this.sourceSpan = sourceSpan;\n  }\n\n  _createClass(Text$1, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitText(this, context);\n    }\n  }]);\n\n  return Text$1;\n}(); // TODO(vicb): do we really need this node (vs an array) ?\n\n\nvar Container = /*#__PURE__*/function () {\n  function Container(children, sourceSpan) {\n    _classCallCheck(this, Container);\n\n    this.children = children;\n    this.sourceSpan = sourceSpan;\n  }\n\n  _createClass(Container, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitContainer(this, context);\n    }\n  }]);\n\n  return Container;\n}();\n\nvar Icu$1 = /*#__PURE__*/function () {\n  function Icu$1(expression, type, cases, sourceSpan) {\n    _classCallCheck(this, Icu$1);\n\n    this.expression = expression;\n    this.type = type;\n    this.cases = cases;\n    this.sourceSpan = sourceSpan;\n  }\n\n  _createClass(Icu$1, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitIcu(this, context);\n    }\n  }]);\n\n  return Icu$1;\n}();\n\nvar TagPlaceholder = /*#__PURE__*/function () {\n  function TagPlaceholder(tag, attrs, startName, closeName, children, isVoid, // TODO sourceSpan should cover all (we need a startSourceSpan and endSourceSpan)\n  sourceSpan, startSourceSpan, endSourceSpan) {\n    _classCallCheck(this, TagPlaceholder);\n\n    this.tag = tag;\n    this.attrs = attrs;\n    this.startName = startName;\n    this.closeName = closeName;\n    this.children = children;\n    this.isVoid = isVoid;\n    this.sourceSpan = sourceSpan;\n    this.startSourceSpan = startSourceSpan;\n    this.endSourceSpan = endSourceSpan;\n  }\n\n  _createClass(TagPlaceholder, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitTagPlaceholder(this, context);\n    }\n  }]);\n\n  return TagPlaceholder;\n}();\n\nvar Placeholder = /*#__PURE__*/function () {\n  function Placeholder(value, name, sourceSpan) {\n    _classCallCheck(this, Placeholder);\n\n    this.value = value;\n    this.name = name;\n    this.sourceSpan = sourceSpan;\n  }\n\n  _createClass(Placeholder, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitPlaceholder(this, context);\n    }\n  }]);\n\n  return Placeholder;\n}();\n\nvar IcuPlaceholder = /*#__PURE__*/function () {\n  function IcuPlaceholder(value, name, sourceSpan) {\n    _classCallCheck(this, IcuPlaceholder);\n\n    this.value = value;\n    this.name = name;\n    this.sourceSpan = sourceSpan;\n  }\n\n  _createClass(IcuPlaceholder, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitIcuPlaceholder(this, context);\n    }\n  }]);\n\n  return IcuPlaceholder;\n}(); // Clone the AST\n\n\nvar CloneVisitor = /*#__PURE__*/function () {\n  function CloneVisitor() {\n    _classCallCheck(this, CloneVisitor);\n  }\n\n  _createClass(CloneVisitor, [{\n    key: \"visitText\",\n    value: function visitText(text, context) {\n      return new Text$1(text.value, text.sourceSpan);\n    }\n  }, {\n    key: \"visitContainer\",\n    value: function visitContainer(container, context) {\n      var _this61 = this;\n\n      var children = container.children.map(function (n) {\n        return n.visit(_this61, context);\n      });\n      return new Container(children, container.sourceSpan);\n    }\n  }, {\n    key: \"visitIcu\",\n    value: function visitIcu(icu, context) {\n      var _this62 = this;\n\n      var cases = {};\n      Object.keys(icu.cases).forEach(function (key) {\n        return cases[key] = icu.cases[key].visit(_this62, context);\n      });\n      var msg = new Icu$1(icu.expression, icu.type, cases, icu.sourceSpan);\n      msg.expressionPlaceholder = icu.expressionPlaceholder;\n      return msg;\n    }\n  }, {\n    key: \"visitTagPlaceholder\",\n    value: function visitTagPlaceholder(ph, context) {\n      var _this63 = this;\n\n      var children = ph.children.map(function (n) {\n        return n.visit(_this63, context);\n      });\n      return new TagPlaceholder(ph.tag, ph.attrs, ph.startName, ph.closeName, children, ph.isVoid, ph.sourceSpan, ph.startSourceSpan, ph.endSourceSpan);\n    }\n  }, {\n    key: \"visitPlaceholder\",\n    value: function visitPlaceholder(ph, context) {\n      return new Placeholder(ph.value, ph.name, ph.sourceSpan);\n    }\n  }, {\n    key: \"visitIcuPlaceholder\",\n    value: function visitIcuPlaceholder(ph, context) {\n      return new IcuPlaceholder(ph.value, ph.name, ph.sourceSpan);\n    }\n  }]);\n\n  return CloneVisitor;\n}(); // Visit all the nodes recursively\n\n\nvar RecurseVisitor = /*#__PURE__*/function () {\n  function RecurseVisitor() {\n    _classCallCheck(this, RecurseVisitor);\n  }\n\n  _createClass(RecurseVisitor, [{\n    key: \"visitText\",\n    value: function visitText(text, context) {}\n  }, {\n    key: \"visitContainer\",\n    value: function visitContainer(container, context) {\n      var _this64 = this;\n\n      container.children.forEach(function (child) {\n        return child.visit(_this64);\n      });\n    }\n  }, {\n    key: \"visitIcu\",\n    value: function visitIcu(icu, context) {\n      var _this65 = this;\n\n      Object.keys(icu.cases).forEach(function (k) {\n        icu.cases[k].visit(_this65);\n      });\n    }\n  }, {\n    key: \"visitTagPlaceholder\",\n    value: function visitTagPlaceholder(ph, context) {\n      var _this66 = this;\n\n      ph.children.forEach(function (child) {\n        return child.visit(_this66);\n      });\n    }\n  }, {\n    key: \"visitPlaceholder\",\n    value: function visitPlaceholder(ph, context) {}\n  }, {\n    key: \"visitIcuPlaceholder\",\n    value: function visitIcuPlaceholder(ph, context) {}\n  }]);\n\n  return RecurseVisitor;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Represents a big integer using a buffer of its individual digits, with the least significant\n * digit stored at the beginning of the array (little endian).\n *\n * For performance reasons, each instance is mutable. The addition operation can be done in-place\n * to reduce memory pressure of allocation for the digits array.\n */\n\n\nvar BigInteger = /*#__PURE__*/function () {\n  /**\n   * Creates a big integer using its individual digits in little endian storage.\n   */\n  function BigInteger(digits) {\n    _classCallCheck(this, BigInteger);\n\n    this.digits = digits;\n  }\n\n  _createClass(BigInteger, [{\n    key: \"clone\",\n    value:\n    /**\n     * Creates a clone of this instance.\n     */\n    function clone() {\n      return new BigInteger(this.digits.slice());\n    }\n    /**\n     * Returns a new big integer with the sum of `this` and `other` as its value. This does not mutate\n     * `this` but instead returns a new instance, unlike `addToSelf`.\n     */\n\n  }, {\n    key: \"add\",\n    value: function add(other) {\n      var result = this.clone();\n      result.addToSelf(other);\n      return result;\n    }\n    /**\n     * Adds `other` to the instance itself, thereby mutating its value.\n     */\n\n  }, {\n    key: \"addToSelf\",\n    value: function addToSelf(other) {\n      var maxNrOfDigits = Math.max(this.digits.length, other.digits.length);\n      var carry = 0;\n\n      for (var i = 0; i < maxNrOfDigits; i++) {\n        var digitSum = carry;\n\n        if (i < this.digits.length) {\n          digitSum += this.digits[i];\n        }\n\n        if (i < other.digits.length) {\n          digitSum += other.digits[i];\n        }\n\n        if (digitSum >= 10) {\n          this.digits[i] = digitSum - 10;\n          carry = 1;\n        } else {\n          this.digits[i] = digitSum;\n          carry = 0;\n        }\n      } // Apply a remaining carry if needed.\n\n\n      if (carry > 0) {\n        this.digits[maxNrOfDigits] = 1;\n      }\n    }\n    /**\n     * Builds the decimal string representation of the big integer. As this is stored in\n     * little endian, the digits are concatenated in reverse order.\n     */\n\n  }, {\n    key: \"toString\",\n    value: function toString() {\n      var res = '';\n\n      for (var i = this.digits.length - 1; i >= 0; i--) {\n        res += this.digits[i];\n      }\n\n      return res;\n    }\n  }], [{\n    key: \"zero\",\n    value: function zero() {\n      return new BigInteger([0]);\n    }\n  }, {\n    key: \"one\",\n    value: function one() {\n      return new BigInteger([1]);\n    }\n  }]);\n\n  return BigInteger;\n}();\n/**\n * Represents a big integer which is optimized for multiplication operations, as its power-of-twos\n * are memoized. See `multiplyBy()` for details on the multiplication algorithm.\n */\n\n\nvar BigIntForMultiplication = /*#__PURE__*/function () {\n  function BigIntForMultiplication(value) {\n    _classCallCheck(this, BigIntForMultiplication);\n\n    this.powerOfTwos = [value];\n  }\n  /**\n   * Returns the big integer itself.\n   */\n\n\n  _createClass(BigIntForMultiplication, [{\n    key: \"getValue\",\n    value: function getValue() {\n      return this.powerOfTwos[0];\n    }\n    /**\n     * Computes the value for `num * b`, where `num` is a JS number and `b` is a big integer. The\n     * value for `b` is represented by a storage model that is optimized for this computation.\n     *\n     * This operation is implemented in N(log2(num)) by continuous halving of the number, where the\n     * least-significant bit (LSB) is tested in each iteration. If the bit is set, the bit's index is\n     * used as exponent into the power-of-two multiplication of `b`.\n     *\n     * As an example, consider the multiplication num=42, b=1337. In binary 42 is 0b00101010 and the\n     * algorithm unrolls into the following iterations:\n     *\n     *  Iteration | num        | LSB  | b * 2^iter | Add? | product\n     * -----------|------------|------|------------|------|--------\n     *  0         | 0b00101010 | 0    | 1337       | No   | 0\n     *  1         | 0b00010101 | 1    | 2674       | Yes  | 2674\n     *  2         | 0b00001010 | 0    | 5348       | No   | 2674\n     *  3         | 0b00000101 | 1    | 10696      | Yes  | 13370\n     *  4         | 0b00000010 | 0    | 21392      | No   | 13370\n     *  5         | 0b00000001 | 1    | 42784      | Yes  | 56154\n     *  6         | 0b00000000 | 0    | 85568      | No   | 56154\n     *\n     * The computed product of 56154 is indeed the correct result.\n     *\n     * The `BigIntForMultiplication` representation for a big integer provides memoized access to the\n     * power-of-two values to reduce the workload in computing those values.\n     */\n\n  }, {\n    key: \"multiplyBy\",\n    value: function multiplyBy(num) {\n      var product = BigInteger.zero();\n      this.multiplyByAndAddTo(num, product);\n      return product;\n    }\n    /**\n     * See `multiplyBy()` for details. This function allows for the computed product to be added\n     * directly to the provided result big integer.\n     */\n\n  }, {\n    key: \"multiplyByAndAddTo\",\n    value: function multiplyByAndAddTo(num, result) {\n      for (var exponent = 0; num !== 0; num = num >>> 1, exponent++) {\n        if (num & 1) {\n          var value = this.getMultipliedByPowerOfTwo(exponent);\n          result.addToSelf(value);\n        }\n      }\n    }\n    /**\n     * Computes and memoizes the big integer value for `this.number * 2^exponent`.\n     */\n\n  }, {\n    key: \"getMultipliedByPowerOfTwo\",\n    value: function getMultipliedByPowerOfTwo(exponent) {\n      // Compute the powers up until the requested exponent, where each value is computed from its\n      // predecessor. This is simple as `this.number * 2^(exponent - 1)` only has to be doubled (i.e.\n      // added to itself) to reach `this.number * 2^exponent`.\n      for (var i = this.powerOfTwos.length; i <= exponent; i++) {\n        var previousPower = this.powerOfTwos[i - 1];\n        this.powerOfTwos[i] = previousPower.add(previousPower);\n      }\n\n      return this.powerOfTwos[exponent];\n    }\n  }]);\n\n  return BigIntForMultiplication;\n}();\n/**\n * Represents an exponentiation operation for the provided base, of which exponents are computed and\n * memoized. The results are represented by a `BigIntForMultiplication` which is tailored for\n * multiplication operations by memoizing the power-of-twos. This effectively results in a matrix\n * representation that is lazily computed upon request.\n */\n\n\nvar BigIntExponentiation = /*#__PURE__*/function () {\n  function BigIntExponentiation(base) {\n    _classCallCheck(this, BigIntExponentiation);\n\n    this.base = base;\n    this.exponents = [new BigIntForMultiplication(BigInteger.one())];\n  }\n  /**\n   * Compute the value for `this.base^exponent`, resulting in a big integer that is optimized for\n   * further multiplication operations.\n   */\n\n\n  _createClass(BigIntExponentiation, [{\n    key: \"toThePowerOf\",\n    value: function toThePowerOf(exponent) {\n      // Compute the results up until the requested exponent, where every value is computed from its\n      // predecessor. This is because `this.base^(exponent - 1)` only has to be multiplied by `base`\n      // to reach `this.base^exponent`.\n      for (var i = this.exponents.length; i <= exponent; i++) {\n        var value = this.exponents[i - 1].multiplyBy(this.base);\n        this.exponents[i] = new BigIntForMultiplication(value);\n      }\n\n      return this.exponents[exponent];\n    }\n  }]);\n\n  return BigIntExponentiation;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Return the message id or compute it using the XLIFF1 digest.\n */\n\n\nfunction _digest2(message) {\n  return message.id || computeDigest(message);\n}\n/**\n * Compute the message id using the XLIFF1 digest.\n */\n\n\nfunction computeDigest(message) {\n  return sha1(serializeNodes(message.nodes).join('') + \"[\".concat(message.meaning, \"]\"));\n}\n/**\n * Return the message id or compute it using the XLIFF2/XMB/$localize digest.\n */\n\n\nfunction decimalDigest(message) {\n  return message.id || computeDecimalDigest(message);\n}\n/**\n * Compute the message id using the XLIFF2/XMB/$localize digest.\n */\n\n\nfunction computeDecimalDigest(message) {\n  var visitor = new _SerializerIgnoreIcuExpVisitor();\n  var parts = message.nodes.map(function (a) {\n    return a.visit(visitor, null);\n  });\n  return computeMsgId(parts.join(''), message.meaning);\n}\n/**\n * Serialize the i18n ast to something xml-like in order to generate an UID.\n *\n * The visitor is also used in the i18n parser tests\n *\n * @internal\n */\n\n\nvar _SerializerVisitor = /*#__PURE__*/function () {\n  function _SerializerVisitor() {\n    _classCallCheck(this, _SerializerVisitor);\n  }\n\n  _createClass(_SerializerVisitor, [{\n    key: \"visitText\",\n    value: function visitText(text, context) {\n      return text.value;\n    }\n  }, {\n    key: \"visitContainer\",\n    value: function visitContainer(container, context) {\n      var _this67 = this;\n\n      return \"[\".concat(container.children.map(function (child) {\n        return child.visit(_this67);\n      }).join(', '), \"]\");\n    }\n  }, {\n    key: \"visitIcu\",\n    value: function visitIcu(icu, context) {\n      var _this68 = this;\n\n      var strCases = Object.keys(icu.cases).map(function (k) {\n        return \"\".concat(k, \" {\").concat(icu.cases[k].visit(_this68), \"}\");\n      });\n      return \"{\".concat(icu.expression, \", \").concat(icu.type, \", \").concat(strCases.join(', '), \"}\");\n    }\n  }, {\n    key: \"visitTagPlaceholder\",\n    value: function visitTagPlaceholder(ph, context) {\n      var _this69 = this;\n\n      return ph.isVoid ? \"<ph tag name=\\\"\".concat(ph.startName, \"\\\"/>\") : \"<ph tag name=\\\"\".concat(ph.startName, \"\\\">\").concat(ph.children.map(function (child) {\n        return child.visit(_this69);\n      }).join(', '), \"</ph name=\\\"\").concat(ph.closeName, \"\\\">\");\n    }\n  }, {\n    key: \"visitPlaceholder\",\n    value: function visitPlaceholder(ph, context) {\n      return ph.value ? \"<ph name=\\\"\".concat(ph.name, \"\\\">\").concat(ph.value, \"</ph>\") : \"<ph name=\\\"\".concat(ph.name, \"\\\"/>\");\n    }\n  }, {\n    key: \"visitIcuPlaceholder\",\n    value: function visitIcuPlaceholder(ph, context) {\n      return \"<ph icu name=\\\"\".concat(ph.name, \"\\\">\").concat(ph.value.visit(this), \"</ph>\");\n    }\n  }]);\n\n  return _SerializerVisitor;\n}();\n\nvar serializerVisitor = new _SerializerVisitor();\n\nfunction serializeNodes(nodes) {\n  return nodes.map(function (a) {\n    return a.visit(serializerVisitor, null);\n  });\n}\n/**\n * Serialize the i18n ast to something xml-like in order to generate an UID.\n *\n * Ignore the ICU expressions so that message IDs stays identical if only the expression changes.\n *\n * @internal\n */\n\n\nvar _SerializerIgnoreIcuExpVisitor = /*#__PURE__*/function (_SerializerVisitor2) {\n  _inherits(_SerializerIgnoreIcuExpVisitor, _SerializerVisitor2);\n\n  var _super47 = _createSuper(_SerializerIgnoreIcuExpVisitor);\n\n  function _SerializerIgnoreIcuExpVisitor() {\n    _classCallCheck(this, _SerializerIgnoreIcuExpVisitor);\n\n    return _super47.apply(this, arguments);\n  }\n\n  _createClass(_SerializerIgnoreIcuExpVisitor, [{\n    key: \"visitIcu\",\n    value: function visitIcu(icu, context) {\n      var _this70 = this;\n\n      var strCases = Object.keys(icu.cases).map(function (k) {\n        return \"\".concat(k, \" {\").concat(icu.cases[k].visit(_this70), \"}\");\n      }); // Do not take the expression into account\n\n      return \"{\".concat(icu.type, \", \").concat(strCases.join(', '), \"}\");\n    }\n  }]);\n\n  return _SerializerIgnoreIcuExpVisitor;\n}(_SerializerVisitor);\n/**\n * Compute the SHA1 of the given string\n *\n * see http://csrc.nist.gov/publications/fips/fips180-4/fips-180-4.pdf\n *\n * WARNING: this function has not been designed not tested with security in mind.\n *          DO NOT USE IT IN A SECURITY SENSITIVE CONTEXT.\n */\n\n\nfunction sha1(str) {\n  var utf8 = utf8Encode(str);\n  var words32 = bytesToWords32(utf8, Endian.Big);\n  var len = utf8.length * 8;\n  var w = newArray(80);\n  var a = 0x67452301,\n      b = 0xefcdab89,\n      c = 0x98badcfe,\n      d = 0x10325476,\n      e = 0xc3d2e1f0;\n  words32[len >> 5] |= 0x80 << 24 - len % 32;\n  words32[(len + 64 >> 9 << 4) + 15] = len;\n\n  for (var i = 0; i < words32.length; i += 16) {\n    var h0 = a,\n        h1 = b,\n        h2 = c,\n        h3 = d,\n        h4 = e;\n\n    for (var j = 0; j < 80; j++) {\n      if (j < 16) {\n        w[j] = words32[i + j];\n      } else {\n        w[j] = rol32(w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16], 1);\n      }\n\n      var fkVal = fk(j, b, c, d);\n      var f = fkVal[0];\n      var k = fkVal[1];\n      var temp = [rol32(a, 5), f, e, k, w[j]].reduce(add32);\n      e = d;\n      d = c;\n      c = rol32(b, 30);\n      b = a;\n      a = temp;\n    }\n\n    a = add32(a, h0);\n    b = add32(b, h1);\n    c = add32(c, h2);\n    d = add32(d, h3);\n    e = add32(e, h4);\n  }\n\n  return bytesToHexString(words32ToByteString([a, b, c, d, e]));\n}\n\nfunction fk(index, b, c, d) {\n  if (index < 20) {\n    return [b & c | ~b & d, 0x5a827999];\n  }\n\n  if (index < 40) {\n    return [b ^ c ^ d, 0x6ed9eba1];\n  }\n\n  if (index < 60) {\n    return [b & c | b & d | c & d, 0x8f1bbcdc];\n  }\n\n  return [b ^ c ^ d, 0xca62c1d6];\n}\n/**\n * Compute the fingerprint of the given string\n *\n * The output is 64 bit number encoded as a decimal string\n *\n * based on:\n * https://github.com/google/closure-compiler/blob/master/src/com/google/javascript/jscomp/GoogleJsMessageIdGenerator.java\n */\n\n\nfunction fingerprint(str) {\n  var utf8 = utf8Encode(str);\n  var hi = hash32(utf8, 0);\n  var lo = hash32(utf8, 102072);\n\n  if (hi == 0 && (lo == 0 || lo == 1)) {\n    hi = hi ^ 0x130f9bef;\n    lo = lo ^ -0x6b5f56d8;\n  }\n\n  return [hi, lo];\n}\n\nfunction computeMsgId(msg) {\n  var meaning = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';\n  var msgFingerprint = fingerprint(msg);\n\n  if (meaning) {\n    var meaningFingerprint = fingerprint(meaning);\n    msgFingerprint = add64(rol64(msgFingerprint, 1), meaningFingerprint);\n  }\n\n  var hi = msgFingerprint[0];\n  var lo = msgFingerprint[1];\n  return wordsToDecimalString(hi & 0x7fffffff, lo);\n}\n\nfunction hash32(bytes, c) {\n  var a = 0x9e3779b9,\n      b = 0x9e3779b9;\n  var i;\n  var len = bytes.length;\n\n  for (i = 0; i + 12 <= len; i += 12) {\n    a = add32(a, wordAt(bytes, i, Endian.Little));\n    b = add32(b, wordAt(bytes, i + 4, Endian.Little));\n    c = add32(c, wordAt(bytes, i + 8, Endian.Little));\n    var res = mix(a, b, c);\n    a = res[0], b = res[1], c = res[2];\n  }\n\n  a = add32(a, wordAt(bytes, i, Endian.Little));\n  b = add32(b, wordAt(bytes, i + 4, Endian.Little)); // the first byte of c is reserved for the length\n\n  c = add32(c, len);\n  c = add32(c, wordAt(bytes, i + 8, Endian.Little) << 8);\n  return mix(a, b, c)[2];\n} // clang-format off\n\n\nfunction mix(a, b, c) {\n  a = sub32(a, b);\n  a = sub32(a, c);\n  a ^= c >>> 13;\n  b = sub32(b, c);\n  b = sub32(b, a);\n  b ^= a << 8;\n  c = sub32(c, a);\n  c = sub32(c, b);\n  c ^= b >>> 13;\n  a = sub32(a, b);\n  a = sub32(a, c);\n  a ^= c >>> 12;\n  b = sub32(b, c);\n  b = sub32(b, a);\n  b ^= a << 16;\n  c = sub32(c, a);\n  c = sub32(c, b);\n  c ^= b >>> 5;\n  a = sub32(a, b);\n  a = sub32(a, c);\n  a ^= c >>> 3;\n  b = sub32(b, c);\n  b = sub32(b, a);\n  b ^= a << 10;\n  c = sub32(c, a);\n  c = sub32(c, b);\n  c ^= b >>> 15;\n  return [a, b, c];\n} // clang-format on\n// Utils\n\n\nvar Endian;\n\n(function (Endian) {\n  Endian[Endian[\"Little\"] = 0] = \"Little\";\n  Endian[Endian[\"Big\"] = 1] = \"Big\";\n})(Endian || (Endian = {}));\n\nfunction add32(a, b) {\n  return add32to64(a, b)[1];\n}\n\nfunction add32to64(a, b) {\n  var low = (a & 0xffff) + (b & 0xffff);\n  var high = (a >>> 16) + (b >>> 16) + (low >>> 16);\n  return [high >>> 16, high << 16 | low & 0xffff];\n}\n\nfunction add64(a, b) {\n  var ah = a[0],\n      al = a[1];\n  var bh = b[0],\n      bl = b[1];\n  var result = add32to64(al, bl);\n  var carry = result[0];\n  var l = result[1];\n  var h = add32(add32(ah, bh), carry);\n  return [h, l];\n}\n\nfunction sub32(a, b) {\n  var low = (a & 0xffff) - (b & 0xffff);\n  var high = (a >> 16) - (b >> 16) + (low >> 16);\n  return high << 16 | low & 0xffff;\n} // Rotate a 32b number left `count` position\n\n\nfunction rol32(a, count) {\n  return a << count | a >>> 32 - count;\n} // Rotate a 64b number left `count` position\n\n\nfunction rol64(num, count) {\n  var hi = num[0],\n      lo = num[1];\n  var h = hi << count | lo >>> 32 - count;\n  var l = lo << count | hi >>> 32 - count;\n  return [h, l];\n}\n\nfunction bytesToWords32(bytes, endian) {\n  var size = bytes.length + 3 >>> 2;\n  var words32 = [];\n\n  for (var i = 0; i < size; i++) {\n    words32[i] = wordAt(bytes, i * 4, endian);\n  }\n\n  return words32;\n}\n\nfunction byteAt(bytes, index) {\n  return index >= bytes.length ? 0 : bytes[index];\n}\n\nfunction wordAt(bytes, index, endian) {\n  var word = 0;\n\n  if (endian === Endian.Big) {\n    for (var i = 0; i < 4; i++) {\n      word += byteAt(bytes, index + i) << 24 - 8 * i;\n    }\n  } else {\n    for (var _i5 = 0; _i5 < 4; _i5++) {\n      word += byteAt(bytes, index + _i5) << 8 * _i5;\n    }\n  }\n\n  return word;\n}\n\nfunction words32ToByteString(words32) {\n  return words32.reduce(function (bytes, word) {\n    return bytes.concat(word32ToByteString(word));\n  }, []);\n}\n\nfunction word32ToByteString(word) {\n  var bytes = [];\n\n  for (var i = 0; i < 4; i++) {\n    bytes.push(word >>> 8 * (3 - i) & 0xff);\n  }\n\n  return bytes;\n}\n\nfunction bytesToHexString(bytes) {\n  var hex = '';\n\n  for (var i = 0; i < bytes.length; i++) {\n    var b = byteAt(bytes, i);\n    hex += (b >>> 4).toString(16) + (b & 0x0f).toString(16);\n  }\n\n  return hex.toLowerCase();\n}\n/**\n * Create a shared exponentiation pool for base-256 computations. This shared pool provides memoized\n * power-of-256 results with memoized power-of-two computations for efficient multiplication.\n *\n * For our purposes, this can be safely stored as a global without memory concerns. The reason is\n * that we encode two words, so only need the 0th (for the low word) and 4th (for the high word)\n * exponent.\n */\n\n\nvar base256 = new BigIntExponentiation(256);\n/**\n * Represents two 32-bit words as a single decimal number. This requires a big integer storage\n * model as JS numbers are not accurate enough to represent the 64-bit number.\n *\n * Based on http://www.danvk.org/hex2dec.html\n */\n\nfunction wordsToDecimalString(hi, lo) {\n  // Encode the four bytes in lo in the lower digits of the decimal number.\n  // Note: the multiplication results in lo itself but represented by a big integer using its\n  // decimal digits.\n  var decimal = base256.toThePowerOf(0).multiplyBy(lo); // Encode the four bytes in hi above the four lo bytes. lo is a maximum of (2^8)^4, which is why\n  // this multiplication factor is applied.\n\n  base256.toThePowerOf(4).multiplyByAndAddTo(hi, decimal);\n  return decimal.toString();\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar Serializer = /*#__PURE__*/function () {\n  function Serializer() {\n    _classCallCheck(this, Serializer);\n  }\n\n  _createClass(Serializer, [{\n    key: \"createNameMapper\",\n    value: // Creates a name mapper, see `PlaceholderMapper`\n    // Returning `null` means that no name mapping is used.\n    function createNameMapper(message) {\n      return null;\n    }\n  }]);\n\n  return Serializer;\n}();\n/**\n * A simple mapper that take a function to transform an internal name to a public name\n */\n\n\nvar SimplePlaceholderMapper = /*#__PURE__*/function (_RecurseVisitor) {\n  _inherits(SimplePlaceholderMapper, _RecurseVisitor);\n\n  var _super48 = _createSuper(SimplePlaceholderMapper);\n\n  // create a mapping from the message\n  function SimplePlaceholderMapper(message, mapName) {\n    var _this71;\n\n    _classCallCheck(this, SimplePlaceholderMapper);\n\n    _this71 = _super48.call(this);\n    _this71.mapName = mapName;\n    _this71.internalToPublic = {};\n    _this71.publicToNextId = {};\n    _this71.publicToInternal = {};\n    message.nodes.forEach(function (node) {\n      return node.visit(_assertThisInitialized(_this71));\n    });\n    return _this71;\n  }\n\n  _createClass(SimplePlaceholderMapper, [{\n    key: \"toPublicName\",\n    value: function toPublicName(internalName) {\n      return this.internalToPublic.hasOwnProperty(internalName) ? this.internalToPublic[internalName] : null;\n    }\n  }, {\n    key: \"toInternalName\",\n    value: function toInternalName(publicName) {\n      return this.publicToInternal.hasOwnProperty(publicName) ? this.publicToInternal[publicName] : null;\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text, context) {\n      return null;\n    }\n  }, {\n    key: \"visitTagPlaceholder\",\n    value: function visitTagPlaceholder(ph, context) {\n      this.visitPlaceholderName(ph.startName);\n\n      _get(_getPrototypeOf(SimplePlaceholderMapper.prototype), \"visitTagPlaceholder\", this).call(this, ph, context);\n\n      this.visitPlaceholderName(ph.closeName);\n    }\n  }, {\n    key: \"visitPlaceholder\",\n    value: function visitPlaceholder(ph, context) {\n      this.visitPlaceholderName(ph.name);\n    }\n  }, {\n    key: \"visitIcuPlaceholder\",\n    value: function visitIcuPlaceholder(ph, context) {\n      this.visitPlaceholderName(ph.name);\n    } // XMB placeholders could only contains A-Z, 0-9 and _\n\n  }, {\n    key: \"visitPlaceholderName\",\n    value: function visitPlaceholderName(internalName) {\n      if (!internalName || this.internalToPublic.hasOwnProperty(internalName)) {\n        return;\n      }\n\n      var publicName = this.mapName(internalName);\n\n      if (this.publicToInternal.hasOwnProperty(publicName)) {\n        // Create a new XMB when it has already been used\n        var nextId = this.publicToNextId[publicName];\n        this.publicToNextId[publicName] = nextId + 1;\n        publicName = \"\".concat(publicName, \"_\").concat(nextId);\n      } else {\n        this.publicToNextId[publicName] = 1;\n      }\n\n      this.internalToPublic[internalName] = publicName;\n      this.publicToInternal[publicName] = internalName;\n    }\n  }]);\n\n  return SimplePlaceholderMapper;\n}(RecurseVisitor);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar _Visitor = /*#__PURE__*/function () {\n  function _Visitor() {\n    _classCallCheck(this, _Visitor);\n  }\n\n  _createClass(_Visitor, [{\n    key: \"visitTag\",\n    value: function visitTag(tag) {\n      var _this72 = this;\n\n      var strAttrs = this._serializeAttributes(tag.attrs);\n\n      if (tag.children.length == 0) {\n        return \"<\".concat(tag.name).concat(strAttrs, \"/>\");\n      }\n\n      var strChildren = tag.children.map(function (node) {\n        return node.visit(_this72);\n      });\n      return \"<\".concat(tag.name).concat(strAttrs, \">\").concat(strChildren.join(''), \"</\").concat(tag.name, \">\");\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text) {\n      return text.value;\n    }\n  }, {\n    key: \"visitDeclaration\",\n    value: function visitDeclaration(decl) {\n      return \"<?xml\".concat(this._serializeAttributes(decl.attrs), \" ?>\");\n    }\n  }, {\n    key: \"_serializeAttributes\",\n    value: function _serializeAttributes(attrs) {\n      var strAttrs = Object.keys(attrs).map(function (name) {\n        return \"\".concat(name, \"=\\\"\").concat(attrs[name], \"\\\"\");\n      }).join(' ');\n      return strAttrs.length > 0 ? ' ' + strAttrs : '';\n    }\n  }, {\n    key: \"visitDoctype\",\n    value: function visitDoctype(doctype) {\n      return \"<!DOCTYPE \".concat(doctype.rootTag, \" [\\n\").concat(doctype.dtd, \"\\n]>\");\n    }\n  }]);\n\n  return _Visitor;\n}();\n\nvar _visitor = new _Visitor();\n\nfunction serialize(nodes) {\n  return nodes.map(function (node) {\n    return node.visit(_visitor);\n  }).join('');\n}\n\nvar Declaration = /*#__PURE__*/function () {\n  function Declaration(unescapedAttrs) {\n    var _this73 = this;\n\n    _classCallCheck(this, Declaration);\n\n    this.attrs = {};\n    Object.keys(unescapedAttrs).forEach(function (k) {\n      _this73.attrs[k] = escapeXml(unescapedAttrs[k]);\n    });\n  }\n\n  _createClass(Declaration, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      return visitor.visitDeclaration(this);\n    }\n  }]);\n\n  return Declaration;\n}();\n\nvar Doctype = /*#__PURE__*/function () {\n  function Doctype(rootTag, dtd) {\n    _classCallCheck(this, Doctype);\n\n    this.rootTag = rootTag;\n    this.dtd = dtd;\n  }\n\n  _createClass(Doctype, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      return visitor.visitDoctype(this);\n    }\n  }]);\n\n  return Doctype;\n}();\n\nvar Tag = /*#__PURE__*/function () {\n  function Tag(name) {\n    var _this74 = this;\n\n    var unescapedAttrs = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n    var children = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [];\n\n    _classCallCheck(this, Tag);\n\n    this.name = name;\n    this.children = children;\n    this.attrs = {};\n    Object.keys(unescapedAttrs).forEach(function (k) {\n      _this74.attrs[k] = escapeXml(unescapedAttrs[k]);\n    });\n  }\n\n  _createClass(Tag, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      return visitor.visitTag(this);\n    }\n  }]);\n\n  return Tag;\n}();\n\nvar Text$2 = /*#__PURE__*/function () {\n  function Text$2(unescapedValue) {\n    _classCallCheck(this, Text$2);\n\n    this.value = escapeXml(unescapedValue);\n  }\n\n  _createClass(Text$2, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      return visitor.visitText(this);\n    }\n  }]);\n\n  return Text$2;\n}();\n\nvar CR = /*#__PURE__*/function (_Text$) {\n  _inherits(CR, _Text$);\n\n  var _super49 = _createSuper(CR);\n\n  function CR() {\n    var ws = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;\n\n    _classCallCheck(this, CR);\n\n    return _super49.call(this, \"\\n\".concat(new Array(ws + 1).join(' ')));\n  }\n\n  return _createClass(CR);\n}(Text$2);\n\nvar _ESCAPED_CHARS = [[/&/g, '&amp;'], [/\"/g, '&quot;'], [/'/g, '&apos;'], [/</g, '&lt;'], [/>/g, '&gt;']]; // Escape `_ESCAPED_CHARS` characters in the given text with encoded entities\n\nfunction escapeXml(text) {\n  return _ESCAPED_CHARS.reduce(function (text, entry) {\n    return text.replace(entry[0], entry[1]);\n  }, text);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar _MESSAGES_TAG = 'messagebundle';\nvar _MESSAGE_TAG = 'msg';\nvar _PLACEHOLDER_TAG = 'ph';\nvar _EXAMPLE_TAG = 'ex';\nvar _SOURCE_TAG = 'source';\nvar _DOCTYPE = \"<!ELEMENT messagebundle (msg)*>\\n<!ATTLIST messagebundle class CDATA #IMPLIED>\\n\\n<!ELEMENT msg (#PCDATA|ph|source)*>\\n<!ATTLIST msg id CDATA #IMPLIED>\\n<!ATTLIST msg seq CDATA #IMPLIED>\\n<!ATTLIST msg name CDATA #IMPLIED>\\n<!ATTLIST msg desc CDATA #IMPLIED>\\n<!ATTLIST msg meaning CDATA #IMPLIED>\\n<!ATTLIST msg obsolete (obsolete) #IMPLIED>\\n<!ATTLIST msg xml:space (default|preserve) \\\"default\\\">\\n<!ATTLIST msg is_hidden CDATA #IMPLIED>\\n\\n<!ELEMENT source (#PCDATA)>\\n\\n<!ELEMENT ph (#PCDATA|ex)*>\\n<!ATTLIST ph name CDATA #REQUIRED>\\n\\n<!ELEMENT ex (#PCDATA)>\";\n\nvar Xmb = /*#__PURE__*/function (_Serializer) {\n  _inherits(Xmb, _Serializer);\n\n  var _super50 = _createSuper(Xmb);\n\n  function Xmb() {\n    _classCallCheck(this, Xmb);\n\n    return _super50.apply(this, arguments);\n  }\n\n  _createClass(Xmb, [{\n    key: \"write\",\n    value: function write(messages, locale) {\n      var exampleVisitor = new ExampleVisitor();\n      var visitor = new _Visitor$1();\n      var rootNode = new Tag(_MESSAGES_TAG);\n      messages.forEach(function (message) {\n        var attrs = {\n          id: message.id\n        };\n\n        if (message.description) {\n          attrs['desc'] = message.description;\n        }\n\n        if (message.meaning) {\n          attrs['meaning'] = message.meaning;\n        }\n\n        var sourceTags = [];\n        message.sources.forEach(function (source) {\n          sourceTags.push(new Tag(_SOURCE_TAG, {}, [new Text$2(\"\".concat(source.filePath, \":\").concat(source.startLine).concat(source.endLine !== source.startLine ? ',' + source.endLine : ''))]));\n        });\n        rootNode.children.push(new CR(2), new Tag(_MESSAGE_TAG, attrs, [].concat(sourceTags, _toConsumableArray(visitor.serialize(message.nodes)))));\n      });\n      rootNode.children.push(new CR());\n      return serialize([new Declaration({\n        version: '1.0',\n        encoding: 'UTF-8'\n      }), new CR(), new Doctype(_MESSAGES_TAG, _DOCTYPE), new CR(), exampleVisitor.addDefaultExamples(rootNode), new CR()]);\n    }\n  }, {\n    key: \"load\",\n    value: function load(content, url) {\n      throw new Error('Unsupported');\n    }\n  }, {\n    key: \"digest\",\n    value: function digest(message) {\n      return digest$1(message);\n    }\n  }, {\n    key: \"createNameMapper\",\n    value: function createNameMapper(message) {\n      return new SimplePlaceholderMapper(message, toPublicName);\n    }\n  }]);\n\n  return Xmb;\n}(Serializer);\n\nvar _Visitor$1 = /*#__PURE__*/function () {\n  function _Visitor$1() {\n    _classCallCheck(this, _Visitor$1);\n  }\n\n  _createClass(_Visitor$1, [{\n    key: \"visitText\",\n    value: function visitText(text, context) {\n      return [new Text$2(text.value)];\n    }\n  }, {\n    key: \"visitContainer\",\n    value: function visitContainer(container, context) {\n      var _this75 = this;\n\n      var nodes = [];\n      container.children.forEach(function (node) {\n        return nodes.push.apply(nodes, _toConsumableArray(node.visit(_this75)));\n      });\n      return nodes;\n    }\n  }, {\n    key: \"visitIcu\",\n    value: function visitIcu(icu, context) {\n      var _this76 = this;\n\n      var nodes = [new Text$2(\"{\".concat(icu.expressionPlaceholder, \", \").concat(icu.type, \", \"))];\n      Object.keys(icu.cases).forEach(function (c) {\n        nodes.push.apply(nodes, [new Text$2(\"\".concat(c, \" {\"))].concat(_toConsumableArray(icu.cases[c].visit(_this76)), [new Text$2(\"} \")]));\n      });\n      nodes.push(new Text$2(\"}\"));\n      return nodes;\n    }\n  }, {\n    key: \"visitTagPlaceholder\",\n    value: function visitTagPlaceholder(ph, context) {\n      var startTagAsText = new Text$2(\"<\".concat(ph.tag, \">\"));\n      var startEx = new Tag(_EXAMPLE_TAG, {}, [startTagAsText]); // TC requires PH to have a non empty EX, and uses the text node to show the \"original\" value.\n\n      var startTagPh = new Tag(_PLACEHOLDER_TAG, {\n        name: ph.startName\n      }, [startEx, startTagAsText]);\n\n      if (ph.isVoid) {\n        // void tags have no children nor closing tags\n        return [startTagPh];\n      }\n\n      var closeTagAsText = new Text$2(\"</\".concat(ph.tag, \">\"));\n      var closeEx = new Tag(_EXAMPLE_TAG, {}, [closeTagAsText]); // TC requires PH to have a non empty EX, and uses the text node to show the \"original\" value.\n\n      var closeTagPh = new Tag(_PLACEHOLDER_TAG, {\n        name: ph.closeName\n      }, [closeEx, closeTagAsText]);\n      return [startTagPh].concat(_toConsumableArray(this.serialize(ph.children)), [closeTagPh]);\n    }\n  }, {\n    key: \"visitPlaceholder\",\n    value: function visitPlaceholder(ph, context) {\n      var interpolationAsText = new Text$2(\"{{\".concat(ph.value, \"}}\")); // Example tag needs to be not-empty for TC.\n\n      var exTag = new Tag(_EXAMPLE_TAG, {}, [interpolationAsText]);\n      return [// TC requires PH to have a non empty EX, and uses the text node to show the \"original\" value.\n      new Tag(_PLACEHOLDER_TAG, {\n        name: ph.name\n      }, [exTag, interpolationAsText])];\n    }\n  }, {\n    key: \"visitIcuPlaceholder\",\n    value: function visitIcuPlaceholder(ph, context) {\n      var icuExpression = ph.value.expression;\n      var icuType = ph.value.type;\n      var icuCases = Object.keys(ph.value.cases).map(function (value) {\n        return value + ' {...}';\n      }).join(' ');\n      var icuAsText = new Text$2(\"{\".concat(icuExpression, \", \").concat(icuType, \", \").concat(icuCases, \"}\"));\n      var exTag = new Tag(_EXAMPLE_TAG, {}, [icuAsText]);\n      return [// TC requires PH to have a non empty EX, and uses the text node to show the \"original\" value.\n      new Tag(_PLACEHOLDER_TAG, {\n        name: ph.name\n      }, [exTag, icuAsText])];\n    }\n  }, {\n    key: \"serialize\",\n    value: function serialize(nodes) {\n      var _ref10,\n          _this77 = this;\n\n      return (_ref10 = []).concat.apply(_ref10, _toConsumableArray(nodes.map(function (node) {\n        return node.visit(_this77);\n      })));\n    }\n  }]);\n\n  return _Visitor$1;\n}();\n\nfunction digest$1(message) {\n  return decimalDigest(message);\n} // TC requires at least one non-empty example on placeholders\n\n\nvar ExampleVisitor = /*#__PURE__*/function () {\n  function ExampleVisitor() {\n    _classCallCheck(this, ExampleVisitor);\n  }\n\n  _createClass(ExampleVisitor, [{\n    key: \"addDefaultExamples\",\n    value: function addDefaultExamples(node) {\n      node.visit(this);\n      return node;\n    }\n  }, {\n    key: \"visitTag\",\n    value: function visitTag(tag) {\n      var _this78 = this;\n\n      if (tag.name === _PLACEHOLDER_TAG) {\n        if (!tag.children || tag.children.length == 0) {\n          var exText = new Text$2(tag.attrs['name'] || '...');\n          tag.children = [new Tag(_EXAMPLE_TAG, {}, [exText])];\n        }\n      } else if (tag.children) {\n        tag.children.forEach(function (node) {\n          return node.visit(_this78);\n        });\n      }\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text) {}\n  }, {\n    key: \"visitDeclaration\",\n    value: function visitDeclaration(decl) {}\n  }, {\n    key: \"visitDoctype\",\n    value: function visitDoctype(doctype) {}\n  }]);\n\n  return ExampleVisitor;\n}(); // XMB/XTB placeholders can only contain A-Z, 0-9 and _\n\n\nfunction toPublicName(internalName) {\n  return internalName.toUpperCase().replace(/[^A-Z0-9_]/g, '_');\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/* Closure variables holding messages must be named `MSG_[A-Z0-9]+` */\n\n\nvar CLOSURE_TRANSLATION_VAR_PREFIX = 'MSG_';\n/**\n * Prefix for non-`goog.getMsg` i18n-related vars.\n * Note: the prefix uses lowercase characters intentionally due to a Closure behavior that\n * considers variables like `I18N_0` as constants and throws an error when their value changes.\n */\n\nvar TRANSLATION_VAR_PREFIX = 'i18n_';\n/** Name of the i18n attributes **/\n\nvar I18N_ATTR = 'i18n';\nvar I18N_ATTR_PREFIX = 'i18n-';\n/** Prefix of var expressions used in ICUs */\n\nvar I18N_ICU_VAR_PREFIX = 'VAR_';\n/** Prefix of ICU expressions for post processing */\n\nvar I18N_ICU_MAPPING_PREFIX = 'I18N_EXP_';\n/** Placeholder wrapper for i18n expressions **/\n\nvar I18N_PLACEHOLDER_SYMBOL = '�';\n\nfunction isI18nAttribute(name) {\n  return name === I18N_ATTR || name.startsWith(I18N_ATTR_PREFIX);\n}\n\nfunction isI18nRootNode(meta) {\n  return meta instanceof Message;\n}\n\nfunction isSingleI18nIcu(meta) {\n  return isI18nRootNode(meta) && meta.nodes.length === 1 && meta.nodes[0] instanceof Icu$1;\n}\n\nfunction hasI18nMeta(node) {\n  return !!node.i18n;\n}\n\nfunction hasI18nAttrs(element) {\n  return element.attrs.some(function (attr) {\n    return isI18nAttribute(attr.name);\n  });\n}\n\nfunction icuFromI18nMessage(message) {\n  return message.nodes[0];\n}\n\nfunction wrapI18nPlaceholder(content) {\n  var contextId = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;\n  var blockId = contextId > 0 ? \":\".concat(contextId) : '';\n  return \"\".concat(I18N_PLACEHOLDER_SYMBOL).concat(content).concat(blockId).concat(I18N_PLACEHOLDER_SYMBOL);\n}\n\nfunction assembleI18nBoundString(strings) {\n  var bindingStartIndex = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;\n  var contextId = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;\n  if (!strings.length) return '';\n  var acc = '';\n  var lastIdx = strings.length - 1;\n\n  for (var i = 0; i < lastIdx; i++) {\n    acc += \"\".concat(strings[i]).concat(wrapI18nPlaceholder(bindingStartIndex + i, contextId));\n  }\n\n  acc += strings[lastIdx];\n  return acc;\n}\n\nfunction getSeqNumberGenerator() {\n  var startsAt = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;\n  var current = startsAt;\n  return function () {\n    return current++;\n  };\n}\n\nfunction placeholdersToParams(placeholders) {\n  var params = {};\n  placeholders.forEach(function (values, key) {\n    params[key] = literal(values.length > 1 ? \"[\".concat(values.join('|'), \"]\") : values[0]);\n  });\n  return params;\n}\n\nfunction updatePlaceholderMap(map, name) {\n  var current = map.get(name) || [];\n\n  for (var _len2 = arguments.length, values = new Array(_len2 > 2 ? _len2 - 2 : 0), _key3 = 2; _key3 < _len2; _key3++) {\n    values[_key3 - 2] = arguments[_key3];\n  }\n\n  current.push.apply(current, values);\n  map.set(name, current);\n}\n\nfunction assembleBoundTextPlaceholders(meta) {\n  var bindingStartIndex = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;\n  var contextId = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;\n  var startIdx = bindingStartIndex;\n  var placeholders = new Map();\n  var node = meta instanceof Message ? meta.nodes.find(function (node) {\n    return node instanceof Container;\n  }) : meta;\n\n  if (node) {\n    node.children.filter(function (child) {\n      return child instanceof Placeholder;\n    }).forEach(function (child, idx) {\n      var content = wrapI18nPlaceholder(startIdx + idx, contextId);\n      updatePlaceholderMap(placeholders, child.name, content);\n    });\n  }\n\n  return placeholders;\n}\n/**\n * Format the placeholder names in a map of placeholders to expressions.\n *\n * The placeholder names are converted from \"internal\" format (e.g. `START_TAG_DIV_1`) to \"external\"\n * format (e.g. `startTagDiv_1`).\n *\n * @param params A map of placeholder names to expressions.\n * @param useCamelCase whether to camelCase the placeholder name when formatting.\n * @returns A new map of formatted placeholder names to expressions.\n */\n\n\nfunction i18nFormatPlaceholderNames() {\n  var params = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n  var useCamelCase = arguments.length > 1 ? arguments[1] : undefined;\n  var _params = {};\n\n  if (params && Object.keys(params).length) {\n    Object.keys(params).forEach(function (key) {\n      return _params[formatI18nPlaceholderName(key, useCamelCase)] = params[key];\n    });\n  }\n\n  return _params;\n}\n/**\n * Converts internal placeholder names to public-facing format\n * (for example to use in goog.getMsg call).\n * Example: `START_TAG_DIV_1` is converted to `startTagDiv_1`.\n *\n * @param name The placeholder name that should be formatted\n * @returns Formatted placeholder name\n */\n\n\nfunction formatI18nPlaceholderName(name) {\n  var useCamelCase = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;\n  var publicName = toPublicName(name);\n\n  if (!useCamelCase) {\n    return publicName;\n  }\n\n  var chunks = publicName.split('_');\n\n  if (chunks.length === 1) {\n    // if no \"_\" found - just lowercase the value\n    return name.toLowerCase();\n  }\n\n  var postfix; // eject last element if it's a number\n\n  if (/^\\d+$/.test(chunks[chunks.length - 1])) {\n    postfix = chunks.pop();\n  }\n\n  var raw = chunks.shift().toLowerCase();\n\n  if (chunks.length) {\n    raw += chunks.map(function (c) {\n      return c.charAt(0).toUpperCase() + c.slice(1).toLowerCase();\n    }).join('');\n  }\n\n  return postfix ? \"\".concat(raw, \"_\").concat(postfix) : raw;\n}\n/**\n * Generates a prefix for translation const name.\n *\n * @param extra Additional local prefix that should be injected into translation var name\n * @returns Complete translation const prefix\n */\n\n\nfunction getTranslationConstPrefix(extra) {\n  return \"\".concat(CLOSURE_TRANSLATION_VAR_PREFIX).concat(extra).toUpperCase();\n}\n/**\n * Generate AST to declare a variable. E.g. `var I18N_1;`.\n * @param variable the name of the variable to declare.\n */\n\n\nfunction declareI18nVariable(variable) {\n  return new DeclareVarStmt(variable.name, undefined, INFERRED_TYPE, undefined, variable.sourceSpan);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Checks whether an object key contains potentially unsafe chars, thus the key should be wrapped in\n * quotes. Note: we do not wrap all keys into quotes, as it may have impact on minification and may\n * bot work in some cases when object keys are mangled by minifier.\n *\n * TODO(FW-1136): this is a temporary solution, we need to come up with a better way of working with\n * inputs that contain potentially unsafe chars.\n */\n\n\nvar UNSAFE_OBJECT_KEY_NAME_REGEXP = /[-.]/;\n/** Name of the temporary to use during data binding */\n\nvar TEMPORARY_NAME = '_t';\n/** Name of the context parameter passed into a template function */\n\nvar CONTEXT_NAME = 'ctx';\n/** Name of the RenderFlag passed into a template function */\n\nvar RENDER_FLAGS = 'rf';\n/** The prefix reference variables */\n\nvar REFERENCE_PREFIX = '_r';\n/** The name of the implicit context reference */\n\nvar IMPLICIT_REFERENCE = '$implicit';\n/** Non bindable attribute name **/\n\nvar NON_BINDABLE_ATTR = 'ngNonBindable';\n/**\n * Creates an allocator for a temporary variable.\n *\n * A variable declaration is added to the statements the first time the allocator is invoked.\n */\n\nfunction temporaryAllocator(statements, name) {\n  var temp = null;\n  return function () {\n    if (!temp) {\n      statements.push(new DeclareVarStmt(TEMPORARY_NAME, undefined, DYNAMIC_TYPE));\n      temp = variable(name);\n    }\n\n    return temp;\n  };\n}\n\nfunction unsupported(feature) {\n  if (this) {\n    throw new Error(\"Builder \".concat(this.constructor.name, \" doesn't support \").concat(feature, \" yet\"));\n  }\n\n  throw new Error(\"Feature \".concat(feature, \" is not supported yet\"));\n}\n\nfunction invalid$1(arg) {\n  throw new Error(\"Invalid state: Visitor \".concat(this.constructor.name, \" doesn't handle \").concat(arg.constructor.name));\n}\n\nfunction asLiteral(value) {\n  if (Array.isArray(value)) {\n    return literalArr(value.map(asLiteral));\n  }\n\n  return literal(value, INFERRED_TYPE);\n}\n\nfunction conditionallyCreateMapObjectLiteral(keys, keepDeclared) {\n  if (Object.getOwnPropertyNames(keys).length > 0) {\n    return mapToExpression(keys, keepDeclared);\n  }\n\n  return null;\n}\n\nfunction mapToExpression(map, keepDeclared) {\n  return literalMap(Object.getOwnPropertyNames(map).map(function (key) {\n    // canonical syntax: `dirProp: publicProp`\n    // if there is no `:`, use dirProp = elProp\n    var value = map[key];\n    var declaredName;\n    var publicName;\n    var minifiedName;\n\n    if (Array.isArray(value)) {\n      var _value = _slicedToArray(value, 2);\n\n      publicName = _value[0];\n      declaredName = _value[1];\n    } else {\n      var _splitAtColon = splitAtColon(key, [key, value]);\n\n      var _splitAtColon2 = _slicedToArray(_splitAtColon, 2);\n\n      declaredName = _splitAtColon2[0];\n      publicName = _splitAtColon2[1];\n    }\n\n    minifiedName = declaredName;\n    return {\n      key: minifiedName,\n      // put quotes around keys that contain potentially unsafe characters\n      quoted: UNSAFE_OBJECT_KEY_NAME_REGEXP.test(minifiedName),\n      value: keepDeclared && publicName !== declaredName ? literalArr([asLiteral(publicName), asLiteral(declaredName)]) : asLiteral(publicName)\n    };\n  }));\n}\n/**\n *  Remove trailing null nodes as they are implied.\n */\n\n\nfunction trimTrailingNulls(parameters) {\n  while (isNull(parameters[parameters.length - 1])) {\n    parameters.pop();\n  }\n\n  return parameters;\n}\n\nfunction getQueryPredicate(query, constantPool) {\n  if (Array.isArray(query.predicate)) {\n    var predicate = [];\n    query.predicate.forEach(function (selector) {\n      // Each item in predicates array may contain strings with comma-separated refs\n      // (for ex. 'ref, ref1, ..., refN'), thus we extract individual refs and store them\n      // as separate array entities\n      var selectors = selector.split(',').map(function (token) {\n        return literal(token.trim());\n      });\n      predicate.push.apply(predicate, _toConsumableArray(selectors));\n    });\n    return constantPool.getConstLiteral(literalArr(predicate), true);\n  } else {\n    return query.predicate;\n  }\n}\n\nfunction noop() {}\n\nvar DefinitionMap = /*#__PURE__*/function () {\n  function DefinitionMap() {\n    _classCallCheck(this, DefinitionMap);\n\n    this.values = [];\n  }\n\n  _createClass(DefinitionMap, [{\n    key: \"set\",\n    value: function set(key, value) {\n      if (value) {\n        this.values.push({\n          key: key,\n          value: value,\n          quoted: false\n        });\n      }\n    }\n  }, {\n    key: \"toLiteralMap\",\n    value: function toLiteralMap() {\n      return literalMap(this.values);\n    }\n  }]);\n\n  return DefinitionMap;\n}();\n/**\n * Extract a map of properties to values for a given element or template node, which can be used\n * by the directive matching machinery.\n *\n * @param elOrTpl the element or template in question\n * @return an object set up for directive matching. For attributes on the element/template, this\n * object maps a property name to its (static) value. For any bindings, this map simply maps the\n * property name to an empty string.\n */\n\n\nfunction getAttrsForDirectiveMatching(elOrTpl) {\n  var attributesMap = {};\n\n  if (elOrTpl instanceof Template && elOrTpl.tagName !== 'ng-template') {\n    elOrTpl.templateAttrs.forEach(function (a) {\n      return attributesMap[a.name] = '';\n    });\n  } else {\n    elOrTpl.attributes.forEach(function (a) {\n      if (!isI18nAttribute(a.name)) {\n        attributesMap[a.name] = a.value;\n      }\n    });\n    elOrTpl.inputs.forEach(function (i) {\n      attributesMap[i.name] = '';\n    });\n    elOrTpl.outputs.forEach(function (o) {\n      attributesMap[o.name] = '';\n    });\n  }\n\n  return attributesMap;\n}\n/** Returns a call expression to a chained instruction, e.g. `property(params[0])(params[1])`. */\n\n\nfunction chainedInstruction(reference, calls, span) {\n  var expression = importExpr(reference, null, span);\n\n  if (calls.length > 0) {\n    for (var i = 0; i < calls.length; i++) {\n      expression = expression.callFn(calls[i], span);\n    }\n  } else {\n    // Add a blank invocation, in case the `calls` array is empty.\n    expression = expression.callFn([], span);\n  }\n\n  return expression;\n}\n/**\n * Gets the number of arguments expected to be passed to a generated instruction in the case of\n * interpolation instructions.\n * @param interpolation An interpolation ast\n */\n\n\nfunction getInterpolationArgsLength(interpolation) {\n  var expressions = interpolation.expressions,\n      strings = interpolation.strings;\n\n  if (expressions.length === 1 && strings.length === 2 && strings[0] === '' && strings[1] === '') {\n    // If the interpolation has one interpolated value, but the prefix and suffix are both empty\n    // strings, we only pass one argument, to a special instruction like `propertyInterpolate` or\n    // `textInterpolate`.\n    return 1;\n  } else {\n    return expressions.length + strings.length;\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar R3FactoryDelegateType;\n\n(function (R3FactoryDelegateType) {\n  R3FactoryDelegateType[R3FactoryDelegateType[\"Class\"] = 0] = \"Class\";\n  R3FactoryDelegateType[R3FactoryDelegateType[\"Function\"] = 1] = \"Function\";\n  R3FactoryDelegateType[R3FactoryDelegateType[\"Factory\"] = 2] = \"Factory\";\n})(R3FactoryDelegateType || (R3FactoryDelegateType = {}));\n\nvar R3FactoryTarget;\n\n(function (R3FactoryTarget) {\n  R3FactoryTarget[R3FactoryTarget[\"Directive\"] = 0] = \"Directive\";\n  R3FactoryTarget[R3FactoryTarget[\"Component\"] = 1] = \"Component\";\n  R3FactoryTarget[R3FactoryTarget[\"Injectable\"] = 2] = \"Injectable\";\n  R3FactoryTarget[R3FactoryTarget[\"Pipe\"] = 3] = \"Pipe\";\n  R3FactoryTarget[R3FactoryTarget[\"NgModule\"] = 4] = \"NgModule\";\n})(R3FactoryTarget || (R3FactoryTarget = {}));\n/**\n * Resolved type of a dependency.\n *\n * Occasionally, dependencies will have special significance which is known statically. In that\n * case the `R3ResolvedDependencyType` informs the factory generator that a particular dependency\n * should be generated specially (usually by calling a special injection function instead of the\n * standard one).\n */\n\n\nvar R3ResolvedDependencyType;\n\n(function (R3ResolvedDependencyType) {\n  /**\n   * A normal token dependency.\n   */\n  R3ResolvedDependencyType[R3ResolvedDependencyType[\"Token\"] = 0] = \"Token\";\n  /**\n   * The dependency is for an attribute.\n   *\n   * The token expression is a string representing the attribute name.\n   */\n\n  R3ResolvedDependencyType[R3ResolvedDependencyType[\"Attribute\"] = 1] = \"Attribute\";\n  /**\n   * Injecting the `ChangeDetectorRef` token. Needs special handling when injected into a pipe.\n   */\n\n  R3ResolvedDependencyType[R3ResolvedDependencyType[\"ChangeDetectorRef\"] = 2] = \"ChangeDetectorRef\";\n  /**\n   * An invalid dependency (no token could be determined). An error should be thrown at runtime.\n   */\n\n  R3ResolvedDependencyType[R3ResolvedDependencyType[\"Invalid\"] = 3] = \"Invalid\";\n})(R3ResolvedDependencyType || (R3ResolvedDependencyType = {}));\n/**\n * Construct a factory function expression for the given `R3FactoryMetadata`.\n */\n\n\nfunction compileFactoryFunction(meta) {\n  var t = variable('t');\n  var statements = [];\n  var ctorDepsType = NONE_TYPE; // The type to instantiate via constructor invocation. If there is no delegated factory, meaning\n  // this type is always created by constructor invocation, then this is the type-to-create\n  // parameter provided by the user (t) if specified, or the current type if not. If there is a\n  // delegated factory (which is used to create the current type) then this is only the type-to-\n  // create parameter (t).\n\n  var typeForCtor = !isDelegatedMetadata(meta) ? new BinaryOperatorExpr(BinaryOperator.Or, t, meta.internalType) : t;\n  var ctorExpr = null;\n\n  if (meta.deps !== null) {\n    // There is a constructor (either explicitly or implicitly defined).\n    if (meta.deps !== 'invalid') {\n      ctorExpr = new InstantiateExpr(typeForCtor, injectDependencies(meta.deps, meta.injectFn, meta.target === R3FactoryTarget.Pipe));\n      ctorDepsType = createCtorDepsType(meta.deps);\n    }\n  } else {\n    var baseFactory = variable(\"\\u0275\".concat(meta.name, \"_BaseFactory\"));\n    var getInheritedFactory = importExpr(Identifiers$1.getInheritedFactory);\n    var baseFactoryStmt = baseFactory.set(getInheritedFactory.callFn([meta.internalType],\n    /* sourceSpan */\n    undefined,\n    /* pure */\n    true)).toDeclStmt(INFERRED_TYPE, [StmtModifier.Exported, StmtModifier.Final]);\n    statements.push(baseFactoryStmt); // There is no constructor, use the base class' factory to construct typeForCtor.\n\n    ctorExpr = baseFactory.callFn([typeForCtor]);\n  }\n\n  var ctorExprFinal = ctorExpr;\n  var body = [];\n  var retExpr = null;\n\n  function makeConditionalFactory(nonCtorExpr) {\n    var r = variable('r');\n    body.push(r.set(NULL_EXPR).toDeclStmt());\n    var ctorStmt = null;\n\n    if (ctorExprFinal !== null) {\n      ctorStmt = r.set(ctorExprFinal).toStmt();\n    } else {\n      ctorStmt = importExpr(Identifiers$1.invalidFactory).callFn([]).toStmt();\n    }\n\n    body.push(ifStmt(t, [ctorStmt], [r.set(nonCtorExpr).toStmt()]));\n    return r;\n  }\n\n  if (isDelegatedMetadata(meta) && meta.delegateType === R3FactoryDelegateType.Factory) {\n    var delegateFactory = variable(\"\\u0275\".concat(meta.name, \"_BaseFactory\"));\n    var getFactoryOf = importExpr(Identifiers$1.getFactoryOf);\n\n    if (meta.delegate.isEquivalent(meta.internalType)) {\n      throw new Error(\"Illegal state: compiling factory that delegates to itself\");\n    }\n\n    var delegateFactoryStmt = delegateFactory.set(getFactoryOf.callFn([meta.delegate])).toDeclStmt(INFERRED_TYPE, [StmtModifier.Exported, StmtModifier.Final]);\n    statements.push(delegateFactoryStmt);\n    retExpr = makeConditionalFactory(delegateFactory.callFn([]));\n  } else if (isDelegatedMetadata(meta)) {\n    // This type is created with a delegated factory. If a type parameter is not specified, call\n    // the factory instead.\n    var delegateArgs = injectDependencies(meta.delegateDeps, meta.injectFn, meta.target === R3FactoryTarget.Pipe); // Either call `new delegate(...)` or `delegate(...)` depending on meta.delegateType.\n\n    var factoryExpr = new (meta.delegateType === R3FactoryDelegateType.Class ? InstantiateExpr : InvokeFunctionExpr)(meta.delegate, delegateArgs);\n    retExpr = makeConditionalFactory(factoryExpr);\n  } else if (isExpressionFactoryMetadata(meta)) {\n    // TODO(alxhub): decide whether to lower the value here or in the caller\n    retExpr = makeConditionalFactory(meta.expression);\n  } else {\n    retExpr = ctorExpr;\n  }\n\n  if (retExpr !== null) {\n    body.push(new ReturnStatement(retExpr));\n  } else {\n    body.push(importExpr(Identifiers$1.invalidFactory).callFn([]).toStmt());\n  }\n\n  return {\n    factory: fn([new FnParam('t', DYNAMIC_TYPE)], body, INFERRED_TYPE, undefined, \"\".concat(meta.name, \"_Factory\")),\n    statements: statements,\n    type: expressionType(importExpr(Identifiers$1.FactoryDef, [typeWithParameters(meta.type.type, meta.typeArgumentCount), ctorDepsType]))\n  };\n}\n\nfunction injectDependencies(deps, injectFn, isPipe) {\n  return deps.map(function (dep, index) {\n    return compileInjectDependency(dep, injectFn, isPipe, index);\n  });\n}\n\nfunction compileInjectDependency(dep, injectFn, isPipe, index) {\n  // Interpret the dependency according to its resolved type.\n  switch (dep.resolved) {\n    case R3ResolvedDependencyType.Token:\n    case R3ResolvedDependencyType.ChangeDetectorRef:\n      // Build up the injection flags according to the metadata.\n      var flags = 0\n      /* Default */\n      | (dep.self ? 2\n      /* Self */\n      : 0) | (dep.skipSelf ? 4\n      /* SkipSelf */\n      : 0) | (dep.host ? 1\n      /* Host */\n      : 0) | (dep.optional ? 8\n      /* Optional */\n      : 0); // If this dependency is optional or otherwise has non-default flags, then additional\n      // parameters describing how to inject the dependency must be passed to the inject function\n      // that's being used.\n\n      var flagsParam = flags !== 0\n      /* Default */\n      || dep.optional ? literal(flags) : null; // We have a separate instruction for injecting ChangeDetectorRef into a pipe.\n\n      if (isPipe && dep.resolved === R3ResolvedDependencyType.ChangeDetectorRef) {\n        return importExpr(Identifiers$1.injectPipeChangeDetectorRef).callFn(flagsParam ? [flagsParam] : []);\n      } // Build up the arguments to the injectFn call.\n\n\n      var injectArgs = [dep.token];\n\n      if (flagsParam) {\n        injectArgs.push(flagsParam);\n      }\n\n      return importExpr(injectFn).callFn(injectArgs);\n\n    case R3ResolvedDependencyType.Attribute:\n      // In the case of attributes, the attribute name in question is given as the token.\n      return importExpr(Identifiers$1.injectAttribute).callFn([dep.token]);\n\n    case R3ResolvedDependencyType.Invalid:\n      return importExpr(Identifiers$1.invalidFactoryDep).callFn([literal(index)]);\n\n    default:\n      return unsupported(\"Unknown R3ResolvedDependencyType: \".concat(R3ResolvedDependencyType[dep.resolved]));\n  }\n}\n\nfunction createCtorDepsType(deps) {\n  var hasTypes = false;\n  var attributeTypes = deps.map(function (dep) {\n    var type = createCtorDepType(dep);\n\n    if (type !== null) {\n      hasTypes = true;\n      return type;\n    } else {\n      return literal(null);\n    }\n  });\n\n  if (hasTypes) {\n    return expressionType(literalArr(attributeTypes));\n  } else {\n    return NONE_TYPE;\n  }\n}\n\nfunction createCtorDepType(dep) {\n  var entries = [];\n\n  if (dep.resolved === R3ResolvedDependencyType.Attribute) {\n    if (dep.attribute !== null) {\n      entries.push({\n        key: 'attribute',\n        value: dep.attribute,\n        quoted: false\n      });\n    }\n  }\n\n  if (dep.optional) {\n    entries.push({\n      key: 'optional',\n      value: literal(true),\n      quoted: false\n    });\n  }\n\n  if (dep.host) {\n    entries.push({\n      key: 'host',\n      value: literal(true),\n      quoted: false\n    });\n  }\n\n  if (dep.self) {\n    entries.push({\n      key: 'self',\n      value: literal(true),\n      quoted: false\n    });\n  }\n\n  if (dep.skipSelf) {\n    entries.push({\n      key: 'skipSelf',\n      value: literal(true),\n      quoted: false\n    });\n  }\n\n  return entries.length > 0 ? literalMap(entries) : null;\n}\n/**\n * A helper function useful for extracting `R3DependencyMetadata` from a Render2\n * `CompileTypeMetadata` instance.\n */\n\n\nfunction dependenciesFromGlobalMetadata(type, outputCtx, reflector) {\n  // Use the `CompileReflector` to look up references to some well-known Angular types. These will\n  // be compared with the token to statically determine whether the token has significance to\n  // Angular, and set the correct `R3ResolvedDependencyType` as a result.\n  var injectorRef = reflector.resolveExternalReference(Identifiers.Injector); // Iterate through the type's DI dependencies and produce `R3DependencyMetadata` for each of them.\n\n  var deps = [];\n\n  var _iterator6 = _createForOfIteratorHelper(type.diDeps),\n      _step6;\n\n  try {\n    for (_iterator6.s(); !(_step6 = _iterator6.n()).done;) {\n      var dependency = _step6.value;\n\n      if (dependency.token) {\n        var tokenRef = tokenReference(dependency.token);\n        var resolved = dependency.isAttribute ? R3ResolvedDependencyType.Attribute : R3ResolvedDependencyType.Token; // In the case of most dependencies, the token will be a reference to a type. Sometimes,\n        // however, it can be a string, in the case of older Angular code or @Attribute injection.\n\n        var token = tokenRef instanceof StaticSymbol ? outputCtx.importExpr(tokenRef) : literal(tokenRef); // Construct the dependency.\n\n        deps.push({\n          token: token,\n          attribute: null,\n          resolved: resolved,\n          host: !!dependency.isHost,\n          optional: !!dependency.isOptional,\n          self: !!dependency.isSelf,\n          skipSelf: !!dependency.isSkipSelf\n        });\n      } else {\n        unsupported('dependency without a token');\n      }\n    }\n  } catch (err) {\n    _iterator6.e(err);\n  } finally {\n    _iterator6.f();\n  }\n\n  return deps;\n}\n\nfunction isDelegatedMetadata(meta) {\n  return meta.delegateType !== undefined;\n}\n\nfunction isExpressionFactoryMetadata(meta) {\n  return meta.expression !== undefined;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction _compileInjectable(meta) {\n  var result = null;\n  var factoryMeta = {\n    name: meta.name,\n    type: meta.type,\n    internalType: meta.internalType,\n    typeArgumentCount: meta.typeArgumentCount,\n    deps: [],\n    injectFn: Identifiers.inject,\n    target: R3FactoryTarget.Injectable\n  };\n\n  if (meta.useClass !== undefined) {\n    // meta.useClass has two modes of operation. Either deps are specified, in which case `new` is\n    // used to instantiate the class with dependencies injected, or deps are not specified and\n    // the factory of the class is used to instantiate it.\n    //\n    // A special case exists for useClass: Type where Type is the injectable type itself and no\n    // deps are specified, in which case 'useClass' is effectively ignored.\n    var useClassOnSelf = meta.useClass.isEquivalent(meta.internalType);\n    var deps = undefined;\n\n    if (meta.userDeps !== undefined) {\n      deps = meta.userDeps;\n    }\n\n    if (deps !== undefined) {\n      // factory: () => new meta.useClass(...deps)\n      result = compileFactoryFunction(Object.assign(Object.assign({}, factoryMeta), {\n        delegate: meta.useClass,\n        delegateDeps: deps,\n        delegateType: R3FactoryDelegateType.Class\n      }));\n    } else if (useClassOnSelf) {\n      result = compileFactoryFunction(factoryMeta);\n    } else {\n      result = delegateToFactory(meta.type.value, meta.useClass);\n    }\n  } else if (meta.useFactory !== undefined) {\n    if (meta.userDeps !== undefined) {\n      result = compileFactoryFunction(Object.assign(Object.assign({}, factoryMeta), {\n        delegate: meta.useFactory,\n        delegateDeps: meta.userDeps || [],\n        delegateType: R3FactoryDelegateType.Function\n      }));\n    } else {\n      result = {\n        statements: [],\n        factory: fn([], [new ReturnStatement(meta.useFactory.callFn([]))])\n      };\n    }\n  } else if (meta.useValue !== undefined) {\n    // Note: it's safe to use `meta.useValue` instead of the `USE_VALUE in meta` check used for\n    // client code because meta.useValue is an Expression which will be defined even if the actual\n    // value is undefined.\n    result = compileFactoryFunction(Object.assign(Object.assign({}, factoryMeta), {\n      expression: meta.useValue\n    }));\n  } else if (meta.useExisting !== undefined) {\n    // useExisting is an `inject` call on the existing token.\n    result = compileFactoryFunction(Object.assign(Object.assign({}, factoryMeta), {\n      expression: importExpr(Identifiers.inject).callFn([meta.useExisting])\n    }));\n  } else {\n    result = delegateToFactory(meta.type.value, meta.internalType);\n  }\n\n  var token = meta.internalType;\n  var injectableProps = {\n    token: token,\n    factory: result.factory\n  }; // Only generate providedIn property if it has a non-null value\n\n  if (meta.providedIn.value !== null) {\n    injectableProps.providedIn = meta.providedIn;\n  }\n\n  var expression = importExpr(Identifiers.ɵɵdefineInjectable).callFn([mapToMapExpression(injectableProps)]);\n  var type = new ExpressionType(importExpr(Identifiers.InjectableDef, [typeWithParameters(meta.type.type, meta.typeArgumentCount)]));\n  return {\n    expression: expression,\n    type: type,\n    statements: result.statements\n  };\n}\n\nfunction delegateToFactory(type, internalType) {\n  return {\n    statements: [],\n    // If types are the same, we can generate `factory: type.ɵfac`\n    // If types are different, we have to generate a wrapper function to ensure\n    // the internal type has been resolved (`factory: function(t) { return type.ɵfac(t); }`)\n    factory: type.node === internalType.node ? internalType.prop('ɵfac') : fn([new FnParam('t', DYNAMIC_TYPE)], [new ReturnStatement(internalType.callMethod('ɵfac', [variable('t')]))])\n  };\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction assertArrayOfStrings(identifier, value) {\n  if (value == null) {\n    return;\n  }\n\n  if (!Array.isArray(value)) {\n    throw new Error(\"Expected '\".concat(identifier, \"' to be an array of strings.\"));\n  }\n\n  for (var i = 0; i < value.length; i += 1) {\n    if (typeof value[i] !== 'string') {\n      throw new Error(\"Expected '\".concat(identifier, \"' to be an array of strings.\"));\n    }\n  }\n}\n\nvar UNUSABLE_INTERPOLATION_REGEXPS = [/^\\s*$/, /[<>]/, /^[{}]$/, /&(#|[a-z])/i, /^\\/\\//];\n\nfunction assertInterpolationSymbols(identifier, value) {\n  if (value != null && !(Array.isArray(value) && value.length == 2)) {\n    throw new Error(\"Expected '\".concat(identifier, \"' to be an array, [start, end].\"));\n  } else if (value != null) {\n    var start = value[0];\n    var end = value[1]; // Check for unusable interpolation symbols\n\n    UNUSABLE_INTERPOLATION_REGEXPS.forEach(function (regexp) {\n      if (regexp.test(start) || regexp.test(end)) {\n        throw new Error(\"['\".concat(start, \"', '\").concat(end, \"'] contains unusable interpolation symbol.\"));\n      }\n    });\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar InterpolationConfig = /*#__PURE__*/function () {\n  function InterpolationConfig(start, end) {\n    _classCallCheck(this, InterpolationConfig);\n\n    this.start = start;\n    this.end = end;\n  }\n\n  _createClass(InterpolationConfig, null, [{\n    key: \"fromArray\",\n    value: function fromArray(markers) {\n      if (!markers) {\n        return DEFAULT_INTERPOLATION_CONFIG;\n      }\n\n      assertInterpolationSymbols('interpolation', markers);\n      return new InterpolationConfig(markers[0], markers[1]);\n    }\n  }]);\n\n  return InterpolationConfig;\n}();\n\nvar DEFAULT_INTERPOLATION_CONFIG = new InterpolationConfig('{{', '}}');\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit\n\nvar VERSION = 3;\nvar JS_B64_PREFIX = '# sourceMappingURL=data:application/json;base64,';\n\nvar SourceMapGenerator = /*#__PURE__*/function () {\n  function SourceMapGenerator() {\n    var file = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;\n\n    _classCallCheck(this, SourceMapGenerator);\n\n    this.file = file;\n    this.sourcesContent = new Map();\n    this.lines = [];\n    this.lastCol0 = 0;\n    this.hasMappings = false;\n  } // The content is `null` when the content is expected to be loaded using the URL\n\n\n  _createClass(SourceMapGenerator, [{\n    key: \"addSource\",\n    value: function addSource(url) {\n      var content = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n\n      if (!this.sourcesContent.has(url)) {\n        this.sourcesContent.set(url, content);\n      }\n\n      return this;\n    }\n  }, {\n    key: \"addLine\",\n    value: function addLine() {\n      this.lines.push([]);\n      this.lastCol0 = 0;\n      return this;\n    }\n  }, {\n    key: \"addMapping\",\n    value: function addMapping(col0, sourceUrl, sourceLine0, sourceCol0) {\n      if (!this.currentLine) {\n        throw new Error(\"A line must be added before mappings can be added\");\n      }\n\n      if (sourceUrl != null && !this.sourcesContent.has(sourceUrl)) {\n        throw new Error(\"Unknown source file \\\"\".concat(sourceUrl, \"\\\"\"));\n      }\n\n      if (col0 == null) {\n        throw new Error(\"The column in the generated code must be provided\");\n      }\n\n      if (col0 < this.lastCol0) {\n        throw new Error(\"Mapping should be added in output order\");\n      }\n\n      if (sourceUrl && (sourceLine0 == null || sourceCol0 == null)) {\n        throw new Error(\"The source location must be provided when a source url is provided\");\n      }\n\n      this.hasMappings = true;\n      this.lastCol0 = col0;\n      this.currentLine.push({\n        col0: col0,\n        sourceUrl: sourceUrl,\n        sourceLine0: sourceLine0,\n        sourceCol0: sourceCol0\n      });\n      return this;\n    }\n    /**\n     * @internal strip this from published d.ts files due to\n     * https://github.com/microsoft/TypeScript/issues/36216\n     */\n\n  }, {\n    key: \"currentLine\",\n    get: function get() {\n      return this.lines.slice(-1)[0];\n    }\n  }, {\n    key: \"toJSON\",\n    value: function toJSON() {\n      var _this79 = this;\n\n      if (!this.hasMappings) {\n        return null;\n      }\n\n      var sourcesIndex = new Map();\n      var sources = [];\n      var sourcesContent = [];\n      Array.from(this.sourcesContent.keys()).forEach(function (url, i) {\n        sourcesIndex.set(url, i);\n        sources.push(url);\n        sourcesContent.push(_this79.sourcesContent.get(url) || null);\n      });\n      var mappings = '';\n      var lastCol0 = 0;\n      var lastSourceIndex = 0;\n      var lastSourceLine0 = 0;\n      var lastSourceCol0 = 0;\n      this.lines.forEach(function (segments) {\n        lastCol0 = 0;\n        mappings += segments.map(function (segment) {\n          // zero-based starting column of the line in the generated code\n          var segAsStr = toBase64VLQ(segment.col0 - lastCol0);\n          lastCol0 = segment.col0;\n\n          if (segment.sourceUrl != null) {\n            // zero-based index into the “sources” list\n            segAsStr += toBase64VLQ(sourcesIndex.get(segment.sourceUrl) - lastSourceIndex);\n            lastSourceIndex = sourcesIndex.get(segment.sourceUrl); // the zero-based starting line in the original source\n\n            segAsStr += toBase64VLQ(segment.sourceLine0 - lastSourceLine0);\n            lastSourceLine0 = segment.sourceLine0; // the zero-based starting column in the original source\n\n            segAsStr += toBase64VLQ(segment.sourceCol0 - lastSourceCol0);\n            lastSourceCol0 = segment.sourceCol0;\n          }\n\n          return segAsStr;\n        }).join(',');\n        mappings += ';';\n      });\n      mappings = mappings.slice(0, -1);\n      return {\n        'file': this.file || '',\n        'version': VERSION,\n        'sourceRoot': '',\n        'sources': sources,\n        'sourcesContent': sourcesContent,\n        'mappings': mappings\n      };\n    }\n  }, {\n    key: \"toJsComment\",\n    value: function toJsComment() {\n      return this.hasMappings ? '//' + JS_B64_PREFIX + toBase64String(JSON.stringify(this, null, 0)) : '';\n    }\n  }]);\n\n  return SourceMapGenerator;\n}();\n\nfunction toBase64String(value) {\n  var b64 = '';\n  var encoded = utf8Encode(value);\n\n  for (var i = 0; i < encoded.length;) {\n    var i1 = encoded[i++];\n    var i2 = i < encoded.length ? encoded[i++] : null;\n    var i3 = i < encoded.length ? encoded[i++] : null;\n    b64 += toBase64Digit(i1 >> 2);\n    b64 += toBase64Digit((i1 & 3) << 4 | (i2 === null ? 0 : i2 >> 4));\n    b64 += i2 === null ? '=' : toBase64Digit((i2 & 15) << 2 | (i3 === null ? 0 : i3 >> 6));\n    b64 += i2 === null || i3 === null ? '=' : toBase64Digit(i3 & 63);\n  }\n\n  return b64;\n}\n\nfunction toBase64VLQ(value) {\n  value = value < 0 ? (-value << 1) + 1 : value << 1;\n  var out = '';\n\n  do {\n    var digit = value & 31;\n    value = value >> 5;\n\n    if (value > 0) {\n      digit = digit | 32;\n    }\n\n    out += toBase64Digit(digit);\n  } while (value > 0);\n\n  return out;\n}\n\nvar B64_DIGITS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';\n\nfunction toBase64Digit(value) {\n  if (value < 0 || value >= 64) {\n    throw new Error(\"Can only encode value in the range [0, 63]\");\n  }\n\n  return B64_DIGITS[value];\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar _SINGLE_QUOTE_ESCAPE_STRING_RE = /'|\\\\|\\n|\\r|\\$/g;\nvar _LEGAL_IDENTIFIER_RE = /^[$A-Z_][0-9A-Z_$]*$/i;\nvar _INDENT_WITH = '  ';\nvar CATCH_ERROR_VAR$1 = variable('error', null, null);\nvar CATCH_STACK_VAR$1 = variable('stack', null, null);\n\nvar _EmittedLine = /*#__PURE__*/_createClass(function _EmittedLine(indent) {\n  _classCallCheck(this, _EmittedLine);\n\n  this.indent = indent;\n  this.partsLength = 0;\n  this.parts = [];\n  this.srcSpans = [];\n});\n\nvar EmitterVisitorContext = /*#__PURE__*/function () {\n  function EmitterVisitorContext(_indent) {\n    _classCallCheck(this, EmitterVisitorContext);\n\n    this._indent = _indent;\n    this._classes = [];\n    this._preambleLineCount = 0;\n    this._lines = [new _EmittedLine(_indent)];\n  }\n\n  _createClass(EmitterVisitorContext, [{\n    key: \"_currentLine\",\n    get:\n    /**\n     * @internal strip this from published d.ts files due to\n     * https://github.com/microsoft/TypeScript/issues/36216\n     */\n    function get() {\n      return this._lines[this._lines.length - 1];\n    }\n  }, {\n    key: \"println\",\n    value: function println(from) {\n      var lastPart = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';\n      this.print(from || null, lastPart, true);\n    }\n  }, {\n    key: \"lineIsEmpty\",\n    value: function lineIsEmpty() {\n      return this._currentLine.parts.length === 0;\n    }\n  }, {\n    key: \"lineLength\",\n    value: function lineLength() {\n      return this._currentLine.indent * _INDENT_WITH.length + this._currentLine.partsLength;\n    }\n  }, {\n    key: \"print\",\n    value: function print(from, part) {\n      var newLine = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n\n      if (part.length > 0) {\n        this._currentLine.parts.push(part);\n\n        this._currentLine.partsLength += part.length;\n\n        this._currentLine.srcSpans.push(from && from.sourceSpan || null);\n      }\n\n      if (newLine) {\n        this._lines.push(new _EmittedLine(this._indent));\n      }\n    }\n  }, {\n    key: \"removeEmptyLastLine\",\n    value: function removeEmptyLastLine() {\n      if (this.lineIsEmpty()) {\n        this._lines.pop();\n      }\n    }\n  }, {\n    key: \"incIndent\",\n    value: function incIndent() {\n      this._indent++;\n\n      if (this.lineIsEmpty()) {\n        this._currentLine.indent = this._indent;\n      }\n    }\n  }, {\n    key: \"decIndent\",\n    value: function decIndent() {\n      this._indent--;\n\n      if (this.lineIsEmpty()) {\n        this._currentLine.indent = this._indent;\n      }\n    }\n  }, {\n    key: \"pushClass\",\n    value: function pushClass(clazz) {\n      this._classes.push(clazz);\n    }\n  }, {\n    key: \"popClass\",\n    value: function popClass() {\n      return this._classes.pop();\n    }\n  }, {\n    key: \"currentClass\",\n    get: function get() {\n      return this._classes.length > 0 ? this._classes[this._classes.length - 1] : null;\n    }\n  }, {\n    key: \"toSource\",\n    value: function toSource() {\n      return this.sourceLines.map(function (l) {\n        return l.parts.length > 0 ? _createIndent(l.indent) + l.parts.join('') : '';\n      }).join('\\n');\n    }\n  }, {\n    key: \"toSourceMapGenerator\",\n    value: function toSourceMapGenerator(genFilePath) {\n      var startsAtLine = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;\n      var map = new SourceMapGenerator(genFilePath);\n      var firstOffsetMapped = false;\n\n      var mapFirstOffsetIfNeeded = function mapFirstOffsetIfNeeded() {\n        if (!firstOffsetMapped) {\n          // Add a single space so that tools won't try to load the file from disk.\n          // Note: We are using virtual urls like `ng:///`, so we have to\n          // provide a content here.\n          map.addSource(genFilePath, ' ').addMapping(0, genFilePath, 0, 0);\n          firstOffsetMapped = true;\n        }\n      };\n\n      for (var i = 0; i < startsAtLine; i++) {\n        map.addLine();\n        mapFirstOffsetIfNeeded();\n      }\n\n      this.sourceLines.forEach(function (line, lineIdx) {\n        map.addLine();\n        var spans = line.srcSpans;\n        var parts = line.parts;\n        var col0 = line.indent * _INDENT_WITH.length;\n        var spanIdx = 0; // skip leading parts without source spans\n\n        while (spanIdx < spans.length && !spans[spanIdx]) {\n          col0 += parts[spanIdx].length;\n          spanIdx++;\n        }\n\n        if (spanIdx < spans.length && lineIdx === 0 && col0 === 0) {\n          firstOffsetMapped = true;\n        } else {\n          mapFirstOffsetIfNeeded();\n        }\n\n        while (spanIdx < spans.length) {\n          var span = spans[spanIdx];\n          var source = span.start.file;\n          var sourceLine = span.start.line;\n          var sourceCol = span.start.col;\n          map.addSource(source.url, source.content).addMapping(col0, source.url, sourceLine, sourceCol);\n          col0 += parts[spanIdx].length;\n          spanIdx++; // assign parts without span or the same span to the previous segment\n\n          while (spanIdx < spans.length && (span === spans[spanIdx] || !spans[spanIdx])) {\n            col0 += parts[spanIdx].length;\n            spanIdx++;\n          }\n        }\n      });\n      return map;\n    }\n  }, {\n    key: \"setPreambleLineCount\",\n    value: function setPreambleLineCount(count) {\n      return this._preambleLineCount = count;\n    }\n  }, {\n    key: \"spanOf\",\n    value: function spanOf(line, column) {\n      var emittedLine = this._lines[line - this._preambleLineCount];\n\n      if (emittedLine) {\n        var columnsLeft = column - _createIndent(emittedLine.indent).length;\n\n        for (var partIndex = 0; partIndex < emittedLine.parts.length; partIndex++) {\n          var part = emittedLine.parts[partIndex];\n\n          if (part.length > columnsLeft) {\n            return emittedLine.srcSpans[partIndex];\n          }\n\n          columnsLeft -= part.length;\n        }\n      }\n\n      return null;\n    }\n    /**\n     * @internal strip this from published d.ts files due to\n     * https://github.com/microsoft/TypeScript/issues/36216\n     */\n\n  }, {\n    key: \"sourceLines\",\n    get: function get() {\n      if (this._lines.length && this._lines[this._lines.length - 1].parts.length === 0) {\n        return this._lines.slice(0, -1);\n      }\n\n      return this._lines;\n    }\n  }], [{\n    key: \"createRoot\",\n    value: function createRoot() {\n      return new EmitterVisitorContext(0);\n    }\n  }]);\n\n  return EmitterVisitorContext;\n}();\n\nvar AbstractEmitterVisitor = /*#__PURE__*/function () {\n  function AbstractEmitterVisitor(_escapeDollarInStrings) {\n    _classCallCheck(this, AbstractEmitterVisitor);\n\n    this._escapeDollarInStrings = _escapeDollarInStrings;\n  }\n\n  _createClass(AbstractEmitterVisitor, [{\n    key: \"printLeadingComments\",\n    value: function printLeadingComments(stmt, ctx) {\n      if (stmt.leadingComments === undefined) {\n        return;\n      }\n\n      var _iterator7 = _createForOfIteratorHelper(stmt.leadingComments),\n          _step7;\n\n      try {\n        for (_iterator7.s(); !(_step7 = _iterator7.n()).done;) {\n          var comment = _step7.value;\n\n          if (comment instanceof JSDocComment) {\n            ctx.print(stmt, \"/*\".concat(comment.toString(), \"*/\"), comment.trailingNewline);\n          } else {\n            if (comment.multiline) {\n              ctx.print(stmt, \"/* \".concat(comment.text, \" */\"), comment.trailingNewline);\n            } else {\n              comment.text.split('\\n').forEach(function (line) {\n                ctx.println(stmt, \"// \".concat(line));\n              });\n            }\n          }\n        }\n      } catch (err) {\n        _iterator7.e(err);\n      } finally {\n        _iterator7.f();\n      }\n    }\n  }, {\n    key: \"visitExpressionStmt\",\n    value: function visitExpressionStmt(stmt, ctx) {\n      this.printLeadingComments(stmt, ctx);\n      stmt.expr.visitExpression(this, ctx);\n      ctx.println(stmt, ';');\n      return null;\n    }\n  }, {\n    key: \"visitReturnStmt\",\n    value: function visitReturnStmt(stmt, ctx) {\n      this.printLeadingComments(stmt, ctx);\n      ctx.print(stmt, \"return \");\n      stmt.value.visitExpression(this, ctx);\n      ctx.println(stmt, ';');\n      return null;\n    }\n  }, {\n    key: \"visitIfStmt\",\n    value: function visitIfStmt(stmt, ctx) {\n      this.printLeadingComments(stmt, ctx);\n      ctx.print(stmt, \"if (\");\n      stmt.condition.visitExpression(this, ctx);\n      ctx.print(stmt, \") {\");\n      var hasElseCase = stmt.falseCase != null && stmt.falseCase.length > 0;\n\n      if (stmt.trueCase.length <= 1 && !hasElseCase) {\n        ctx.print(stmt, \" \");\n        this.visitAllStatements(stmt.trueCase, ctx);\n        ctx.removeEmptyLastLine();\n        ctx.print(stmt, \" \");\n      } else {\n        ctx.println();\n        ctx.incIndent();\n        this.visitAllStatements(stmt.trueCase, ctx);\n        ctx.decIndent();\n\n        if (hasElseCase) {\n          ctx.println(stmt, \"} else {\");\n          ctx.incIndent();\n          this.visitAllStatements(stmt.falseCase, ctx);\n          ctx.decIndent();\n        }\n      }\n\n      ctx.println(stmt, \"}\");\n      return null;\n    }\n  }, {\n    key: \"visitThrowStmt\",\n    value: function visitThrowStmt(stmt, ctx) {\n      this.printLeadingComments(stmt, ctx);\n      ctx.print(stmt, \"throw \");\n      stmt.error.visitExpression(this, ctx);\n      ctx.println(stmt, \";\");\n      return null;\n    }\n  }, {\n    key: \"visitWriteVarExpr\",\n    value: function visitWriteVarExpr(expr, ctx) {\n      var lineWasEmpty = ctx.lineIsEmpty();\n\n      if (!lineWasEmpty) {\n        ctx.print(expr, '(');\n      }\n\n      ctx.print(expr, \"\".concat(expr.name, \" = \"));\n      expr.value.visitExpression(this, ctx);\n\n      if (!lineWasEmpty) {\n        ctx.print(expr, ')');\n      }\n\n      return null;\n    }\n  }, {\n    key: \"visitWriteKeyExpr\",\n    value: function visitWriteKeyExpr(expr, ctx) {\n      var lineWasEmpty = ctx.lineIsEmpty();\n\n      if (!lineWasEmpty) {\n        ctx.print(expr, '(');\n      }\n\n      expr.receiver.visitExpression(this, ctx);\n      ctx.print(expr, \"[\");\n      expr.index.visitExpression(this, ctx);\n      ctx.print(expr, \"] = \");\n      expr.value.visitExpression(this, ctx);\n\n      if (!lineWasEmpty) {\n        ctx.print(expr, ')');\n      }\n\n      return null;\n    }\n  }, {\n    key: \"visitWritePropExpr\",\n    value: function visitWritePropExpr(expr, ctx) {\n      var lineWasEmpty = ctx.lineIsEmpty();\n\n      if (!lineWasEmpty) {\n        ctx.print(expr, '(');\n      }\n\n      expr.receiver.visitExpression(this, ctx);\n      ctx.print(expr, \".\".concat(expr.name, \" = \"));\n      expr.value.visitExpression(this, ctx);\n\n      if (!lineWasEmpty) {\n        ctx.print(expr, ')');\n      }\n\n      return null;\n    }\n  }, {\n    key: \"visitInvokeMethodExpr\",\n    value: function visitInvokeMethodExpr(expr, ctx) {\n      expr.receiver.visitExpression(this, ctx);\n      var name = expr.name;\n\n      if (expr.builtin != null) {\n        name = this.getBuiltinMethodName(expr.builtin);\n\n        if (name == null) {\n          // some builtins just mean to skip the call.\n          return null;\n        }\n      }\n\n      ctx.print(expr, \".\".concat(name, \"(\"));\n      this.visitAllExpressions(expr.args, ctx, \",\");\n      ctx.print(expr, \")\");\n      return null;\n    }\n  }, {\n    key: \"visitInvokeFunctionExpr\",\n    value: function visitInvokeFunctionExpr(expr, ctx) {\n      expr.fn.visitExpression(this, ctx);\n      ctx.print(expr, \"(\");\n      this.visitAllExpressions(expr.args, ctx, ',');\n      ctx.print(expr, \")\");\n      return null;\n    }\n  }, {\n    key: \"visitWrappedNodeExpr\",\n    value: function visitWrappedNodeExpr(ast, ctx) {\n      throw new Error('Abstract emitter cannot visit WrappedNodeExpr.');\n    }\n  }, {\n    key: \"visitTypeofExpr\",\n    value: function visitTypeofExpr(expr, ctx) {\n      ctx.print(expr, 'typeof ');\n      expr.expr.visitExpression(this, ctx);\n    }\n  }, {\n    key: \"visitReadVarExpr\",\n    value: function visitReadVarExpr(ast, ctx) {\n      var varName = ast.name;\n\n      if (ast.builtin != null) {\n        switch (ast.builtin) {\n          case BuiltinVar.Super:\n            varName = 'super';\n            break;\n\n          case BuiltinVar.This:\n            varName = 'this';\n            break;\n\n          case BuiltinVar.CatchError:\n            varName = CATCH_ERROR_VAR$1.name;\n            break;\n\n          case BuiltinVar.CatchStack:\n            varName = CATCH_STACK_VAR$1.name;\n            break;\n\n          default:\n            throw new Error(\"Unknown builtin variable \".concat(ast.builtin));\n        }\n      }\n\n      ctx.print(ast, varName);\n      return null;\n    }\n  }, {\n    key: \"visitInstantiateExpr\",\n    value: function visitInstantiateExpr(ast, ctx) {\n      ctx.print(ast, \"new \");\n      ast.classExpr.visitExpression(this, ctx);\n      ctx.print(ast, \"(\");\n      this.visitAllExpressions(ast.args, ctx, ',');\n      ctx.print(ast, \")\");\n      return null;\n    }\n  }, {\n    key: \"visitLiteralExpr\",\n    value: function visitLiteralExpr(ast, ctx) {\n      var value = ast.value;\n\n      if (typeof value === 'string') {\n        ctx.print(ast, escapeIdentifier(value, this._escapeDollarInStrings));\n      } else {\n        ctx.print(ast, \"\".concat(value));\n      }\n\n      return null;\n    }\n  }, {\n    key: \"visitLocalizedString\",\n    value: function visitLocalizedString(ast, ctx) {\n      var head = ast.serializeI18nHead();\n      ctx.print(ast, '$localize `' + head.raw);\n\n      for (var i = 1; i < ast.messageParts.length; i++) {\n        ctx.print(ast, '${');\n        ast.expressions[i - 1].visitExpression(this, ctx);\n        ctx.print(ast, \"}\".concat(ast.serializeI18nTemplatePart(i).raw));\n      }\n\n      ctx.print(ast, '`');\n      return null;\n    }\n  }, {\n    key: \"visitConditionalExpr\",\n    value: function visitConditionalExpr(ast, ctx) {\n      ctx.print(ast, \"(\");\n      ast.condition.visitExpression(this, ctx);\n      ctx.print(ast, '? ');\n      ast.trueCase.visitExpression(this, ctx);\n      ctx.print(ast, ': ');\n      ast.falseCase.visitExpression(this, ctx);\n      ctx.print(ast, \")\");\n      return null;\n    }\n  }, {\n    key: \"visitNotExpr\",\n    value: function visitNotExpr(ast, ctx) {\n      ctx.print(ast, '!');\n      ast.condition.visitExpression(this, ctx);\n      return null;\n    }\n  }, {\n    key: \"visitAssertNotNullExpr\",\n    value: function visitAssertNotNullExpr(ast, ctx) {\n      ast.condition.visitExpression(this, ctx);\n      return null;\n    }\n  }, {\n    key: \"visitUnaryOperatorExpr\",\n    value: function visitUnaryOperatorExpr(ast, ctx) {\n      var opStr;\n\n      switch (ast.operator) {\n        case UnaryOperator.Plus:\n          opStr = '+';\n          break;\n\n        case UnaryOperator.Minus:\n          opStr = '-';\n          break;\n\n        default:\n          throw new Error(\"Unknown operator \".concat(ast.operator));\n      }\n\n      if (ast.parens) ctx.print(ast, \"(\");\n      ctx.print(ast, opStr);\n      ast.expr.visitExpression(this, ctx);\n      if (ast.parens) ctx.print(ast, \")\");\n      return null;\n    }\n  }, {\n    key: \"visitBinaryOperatorExpr\",\n    value: function visitBinaryOperatorExpr(ast, ctx) {\n      var opStr;\n\n      switch (ast.operator) {\n        case BinaryOperator.Equals:\n          opStr = '==';\n          break;\n\n        case BinaryOperator.Identical:\n          opStr = '===';\n          break;\n\n        case BinaryOperator.NotEquals:\n          opStr = '!=';\n          break;\n\n        case BinaryOperator.NotIdentical:\n          opStr = '!==';\n          break;\n\n        case BinaryOperator.And:\n          opStr = '&&';\n          break;\n\n        case BinaryOperator.BitwiseAnd:\n          opStr = '&';\n          break;\n\n        case BinaryOperator.Or:\n          opStr = '||';\n          break;\n\n        case BinaryOperator.Plus:\n          opStr = '+';\n          break;\n\n        case BinaryOperator.Minus:\n          opStr = '-';\n          break;\n\n        case BinaryOperator.Divide:\n          opStr = '/';\n          break;\n\n        case BinaryOperator.Multiply:\n          opStr = '*';\n          break;\n\n        case BinaryOperator.Modulo:\n          opStr = '%';\n          break;\n\n        case BinaryOperator.Lower:\n          opStr = '<';\n          break;\n\n        case BinaryOperator.LowerEquals:\n          opStr = '<=';\n          break;\n\n        case BinaryOperator.Bigger:\n          opStr = '>';\n          break;\n\n        case BinaryOperator.BiggerEquals:\n          opStr = '>=';\n          break;\n\n        default:\n          throw new Error(\"Unknown operator \".concat(ast.operator));\n      }\n\n      if (ast.parens) ctx.print(ast, \"(\");\n      ast.lhs.visitExpression(this, ctx);\n      ctx.print(ast, \" \".concat(opStr, \" \"));\n      ast.rhs.visitExpression(this, ctx);\n      if (ast.parens) ctx.print(ast, \")\");\n      return null;\n    }\n  }, {\n    key: \"visitReadPropExpr\",\n    value: function visitReadPropExpr(ast, ctx) {\n      ast.receiver.visitExpression(this, ctx);\n      ctx.print(ast, \".\");\n      ctx.print(ast, ast.name);\n      return null;\n    }\n  }, {\n    key: \"visitReadKeyExpr\",\n    value: function visitReadKeyExpr(ast, ctx) {\n      ast.receiver.visitExpression(this, ctx);\n      ctx.print(ast, \"[\");\n      ast.index.visitExpression(this, ctx);\n      ctx.print(ast, \"]\");\n      return null;\n    }\n  }, {\n    key: \"visitLiteralArrayExpr\",\n    value: function visitLiteralArrayExpr(ast, ctx) {\n      ctx.print(ast, \"[\");\n      this.visitAllExpressions(ast.entries, ctx, ',');\n      ctx.print(ast, \"]\");\n      return null;\n    }\n  }, {\n    key: \"visitLiteralMapExpr\",\n    value: function visitLiteralMapExpr(ast, ctx) {\n      var _this80 = this;\n\n      ctx.print(ast, \"{\");\n      this.visitAllObjects(function (entry) {\n        ctx.print(ast, \"\".concat(escapeIdentifier(entry.key, _this80._escapeDollarInStrings, entry.quoted), \":\"));\n        entry.value.visitExpression(_this80, ctx);\n      }, ast.entries, ctx, ',');\n      ctx.print(ast, \"}\");\n      return null;\n    }\n  }, {\n    key: \"visitCommaExpr\",\n    value: function visitCommaExpr(ast, ctx) {\n      ctx.print(ast, '(');\n      this.visitAllExpressions(ast.parts, ctx, ',');\n      ctx.print(ast, ')');\n      return null;\n    }\n  }, {\n    key: \"visitAllExpressions\",\n    value: function visitAllExpressions(expressions, ctx, separator) {\n      var _this81 = this;\n\n      this.visitAllObjects(function (expr) {\n        return expr.visitExpression(_this81, ctx);\n      }, expressions, ctx, separator);\n    }\n  }, {\n    key: \"visitAllObjects\",\n    value: function visitAllObjects(handler, expressions, ctx, separator) {\n      var incrementedIndent = false;\n\n      for (var i = 0; i < expressions.length; i++) {\n        if (i > 0) {\n          if (ctx.lineLength() > 80) {\n            ctx.print(null, separator, true);\n\n            if (!incrementedIndent) {\n              // continuation are marked with double indent.\n              ctx.incIndent();\n              ctx.incIndent();\n              incrementedIndent = true;\n            }\n          } else {\n            ctx.print(null, separator, false);\n          }\n        }\n\n        handler(expressions[i]);\n      }\n\n      if (incrementedIndent) {\n        // continuation are marked with double indent.\n        ctx.decIndent();\n        ctx.decIndent();\n      }\n    }\n  }, {\n    key: \"visitAllStatements\",\n    value: function visitAllStatements(statements, ctx) {\n      var _this82 = this;\n\n      statements.forEach(function (stmt) {\n        return stmt.visitStatement(_this82, ctx);\n      });\n    }\n  }]);\n\n  return AbstractEmitterVisitor;\n}();\n\nfunction escapeIdentifier(input, escapeDollar) {\n  var alwaysQuote = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;\n\n  if (input == null) {\n    return null;\n  }\n\n  var body = input.replace(_SINGLE_QUOTE_ESCAPE_STRING_RE, function () {\n    if ((arguments.length <= 0 ? undefined : arguments[0]) == '$') {\n      return escapeDollar ? '\\\\$' : '$';\n    } else if ((arguments.length <= 0 ? undefined : arguments[0]) == '\\n') {\n      return '\\\\n';\n    } else if ((arguments.length <= 0 ? undefined : arguments[0]) == '\\r') {\n      return '\\\\r';\n    } else {\n      return \"\\\\\".concat(arguments.length <= 0 ? undefined : arguments[0]);\n    }\n  });\n  var requiresQuotes = alwaysQuote || !_LEGAL_IDENTIFIER_RE.test(body);\n  return requiresQuotes ? \"'\".concat(body, \"'\") : body;\n}\n\nfunction _createIndent(count) {\n  var res = '';\n\n  for (var i = 0; i < count; i++) {\n    res += _INDENT_WITH;\n  }\n\n  return res;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar AbstractJsEmitterVisitor = /*#__PURE__*/function (_AbstractEmitterVisit) {\n  _inherits(AbstractJsEmitterVisitor, _AbstractEmitterVisit);\n\n  var _super51 = _createSuper(AbstractJsEmitterVisitor);\n\n  function AbstractJsEmitterVisitor() {\n    _classCallCheck(this, AbstractJsEmitterVisitor);\n\n    return _super51.call(this, false);\n  }\n\n  _createClass(AbstractJsEmitterVisitor, [{\n    key: \"visitDeclareClassStmt\",\n    value: function visitDeclareClassStmt(stmt, ctx) {\n      var _this83 = this;\n\n      ctx.pushClass(stmt);\n\n      this._visitClassConstructor(stmt, ctx);\n\n      if (stmt.parent != null) {\n        ctx.print(stmt, \"\".concat(stmt.name, \".prototype = Object.create(\"));\n        stmt.parent.visitExpression(this, ctx);\n        ctx.println(stmt, \".prototype);\");\n      }\n\n      stmt.getters.forEach(function (getter) {\n        return _this83._visitClassGetter(stmt, getter, ctx);\n      });\n      stmt.methods.forEach(function (method) {\n        return _this83._visitClassMethod(stmt, method, ctx);\n      });\n      ctx.popClass();\n      return null;\n    }\n  }, {\n    key: \"_visitClassConstructor\",\n    value: function _visitClassConstructor(stmt, ctx) {\n      ctx.print(stmt, \"function \".concat(stmt.name, \"(\"));\n\n      if (stmt.constructorMethod != null) {\n        this._visitParams(stmt.constructorMethod.params, ctx);\n      }\n\n      ctx.println(stmt, \") {\");\n      ctx.incIndent();\n\n      if (stmt.constructorMethod != null) {\n        if (stmt.constructorMethod.body.length > 0) {\n          ctx.println(stmt, \"var self = this;\");\n          this.visitAllStatements(stmt.constructorMethod.body, ctx);\n        }\n      }\n\n      ctx.decIndent();\n      ctx.println(stmt, \"}\");\n    }\n  }, {\n    key: \"_visitClassGetter\",\n    value: function _visitClassGetter(stmt, getter, ctx) {\n      ctx.println(stmt, \"Object.defineProperty(\".concat(stmt.name, \".prototype, '\").concat(getter.name, \"', { get: function() {\"));\n      ctx.incIndent();\n\n      if (getter.body.length > 0) {\n        ctx.println(stmt, \"var self = this;\");\n        this.visitAllStatements(getter.body, ctx);\n      }\n\n      ctx.decIndent();\n      ctx.println(stmt, \"}});\");\n    }\n  }, {\n    key: \"_visitClassMethod\",\n    value: function _visitClassMethod(stmt, method, ctx) {\n      ctx.print(stmt, \"\".concat(stmt.name, \".prototype.\").concat(method.name, \" = function(\"));\n\n      this._visitParams(method.params, ctx);\n\n      ctx.println(stmt, \") {\");\n      ctx.incIndent();\n\n      if (method.body.length > 0) {\n        ctx.println(stmt, \"var self = this;\");\n        this.visitAllStatements(method.body, ctx);\n      }\n\n      ctx.decIndent();\n      ctx.println(stmt, \"};\");\n    }\n  }, {\n    key: \"visitWrappedNodeExpr\",\n    value: function visitWrappedNodeExpr(ast, ctx) {\n      throw new Error('Cannot emit a WrappedNodeExpr in Javascript.');\n    }\n  }, {\n    key: \"visitReadVarExpr\",\n    value: function visitReadVarExpr(ast, ctx) {\n      if (ast.builtin === BuiltinVar.This) {\n        ctx.print(ast, 'self');\n      } else if (ast.builtin === BuiltinVar.Super) {\n        throw new Error(\"'super' needs to be handled at a parent ast node, not at the variable level!\");\n      } else {\n        _get(_getPrototypeOf(AbstractJsEmitterVisitor.prototype), \"visitReadVarExpr\", this).call(this, ast, ctx);\n      }\n\n      return null;\n    }\n  }, {\n    key: \"visitDeclareVarStmt\",\n    value: function visitDeclareVarStmt(stmt, ctx) {\n      ctx.print(stmt, \"var \".concat(stmt.name));\n\n      if (stmt.value) {\n        ctx.print(stmt, ' = ');\n        stmt.value.visitExpression(this, ctx);\n      }\n\n      ctx.println(stmt, \";\");\n      return null;\n    }\n  }, {\n    key: \"visitCastExpr\",\n    value: function visitCastExpr(ast, ctx) {\n      ast.value.visitExpression(this, ctx);\n      return null;\n    }\n  }, {\n    key: \"visitInvokeFunctionExpr\",\n    value: function visitInvokeFunctionExpr(expr, ctx) {\n      var fnExpr = expr.fn;\n\n      if (fnExpr instanceof ReadVarExpr && fnExpr.builtin === BuiltinVar.Super) {\n        ctx.currentClass.parent.visitExpression(this, ctx);\n        ctx.print(expr, \".call(this\");\n\n        if (expr.args.length > 0) {\n          ctx.print(expr, \", \");\n          this.visitAllExpressions(expr.args, ctx, ',');\n        }\n\n        ctx.print(expr, \")\");\n      } else {\n        _get(_getPrototypeOf(AbstractJsEmitterVisitor.prototype), \"visitInvokeFunctionExpr\", this).call(this, expr, ctx);\n      }\n\n      return null;\n    }\n  }, {\n    key: \"visitFunctionExpr\",\n    value: function visitFunctionExpr(ast, ctx) {\n      ctx.print(ast, \"function\".concat(ast.name ? ' ' + ast.name : '', \"(\"));\n\n      this._visitParams(ast.params, ctx);\n\n      ctx.println(ast, \") {\");\n      ctx.incIndent();\n      this.visitAllStatements(ast.statements, ctx);\n      ctx.decIndent();\n      ctx.print(ast, \"}\");\n      return null;\n    }\n  }, {\n    key: \"visitDeclareFunctionStmt\",\n    value: function visitDeclareFunctionStmt(stmt, ctx) {\n      ctx.print(stmt, \"function \".concat(stmt.name, \"(\"));\n\n      this._visitParams(stmt.params, ctx);\n\n      ctx.println(stmt, \") {\");\n      ctx.incIndent();\n      this.visitAllStatements(stmt.statements, ctx);\n      ctx.decIndent();\n      ctx.println(stmt, \"}\");\n      return null;\n    }\n  }, {\n    key: \"visitTryCatchStmt\",\n    value: function visitTryCatchStmt(stmt, ctx) {\n      ctx.println(stmt, \"try {\");\n      ctx.incIndent();\n      this.visitAllStatements(stmt.bodyStmts, ctx);\n      ctx.decIndent();\n      ctx.println(stmt, \"} catch (\".concat(CATCH_ERROR_VAR$1.name, \") {\"));\n      ctx.incIndent();\n      var catchStmts = [CATCH_STACK_VAR$1.set(CATCH_ERROR_VAR$1.prop('stack')).toDeclStmt(null, [StmtModifier.Final])].concat(stmt.catchStmts);\n      this.visitAllStatements(catchStmts, ctx);\n      ctx.decIndent();\n      ctx.println(stmt, \"}\");\n      return null;\n    }\n  }, {\n    key: \"visitLocalizedString\",\n    value: function visitLocalizedString(ast, ctx) {\n      var _this84 = this;\n\n      // The following convoluted piece of code is effectively the downlevelled equivalent of\n      // ```\n      // $localize `...`\n      // ```\n      // which is effectively like:\n      // ```\n      // $localize(__makeTemplateObject(cooked, raw), expression1, expression2, ...);\n      // ```\n      //\n      // The `$localize` function expects a \"template object\", which is an array of \"cooked\" strings\n      // plus a `raw` property that contains an array of \"raw\" strings.\n      //\n      // In some environments a helper function called `__makeTemplateObject(cooked, raw)` might be\n      // available, in which case we use that. Otherwise we must create our own helper function\n      // inline.\n      //\n      // In the inline function, if `Object.defineProperty` is available we use that to attach the\n      // `raw` array.\n      ctx.print(ast, '$localize((this&&this.__makeTemplateObject||function(e,t){return Object.defineProperty?Object.defineProperty(e,\"raw\",{value:t}):e.raw=t,e})(');\n      var parts = [ast.serializeI18nHead()];\n\n      for (var i = 1; i < ast.messageParts.length; i++) {\n        parts.push(ast.serializeI18nTemplatePart(i));\n      }\n\n      ctx.print(ast, \"[\".concat(parts.map(function (part) {\n        return escapeIdentifier(part.cooked, false);\n      }).join(', '), \"], \"));\n      ctx.print(ast, \"[\".concat(parts.map(function (part) {\n        return escapeIdentifier(part.raw, false);\n      }).join(', '), \"])\"));\n      ast.expressions.forEach(function (expression) {\n        ctx.print(ast, ', ');\n        expression.visitExpression(_this84, ctx);\n      });\n      ctx.print(ast, ')');\n      return null;\n    }\n  }, {\n    key: \"_visitParams\",\n    value: function _visitParams(params, ctx) {\n      this.visitAllObjects(function (param) {\n        return ctx.print(null, param.name);\n      }, params, ctx, ',');\n    }\n  }, {\n    key: \"getBuiltinMethodName\",\n    value: function getBuiltinMethodName(method) {\n      var name;\n\n      switch (method) {\n        case BuiltinMethod.ConcatArray:\n          name = 'concat';\n          break;\n\n        case BuiltinMethod.SubscribeObservable:\n          name = 'subscribe';\n          break;\n\n        case BuiltinMethod.Bind:\n          name = 'bind';\n          break;\n\n        default:\n          throw new Error(\"Unknown builtin method: \".concat(method));\n      }\n\n      return name;\n    }\n  }]);\n\n  return AbstractJsEmitterVisitor;\n}(AbstractEmitterVisitor);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A helper class to manage the evaluation of JIT generated code.\n */\n\n\nvar JitEvaluator = /*#__PURE__*/function () {\n  function JitEvaluator() {\n    _classCallCheck(this, JitEvaluator);\n  }\n\n  _createClass(JitEvaluator, [{\n    key: \"evaluateStatements\",\n    value:\n    /**\n     *\n     * @param sourceUrl The URL of the generated code.\n     * @param statements An array of Angular statement AST nodes to be evaluated.\n     * @param reflector A helper used when converting the statements to executable code.\n     * @param createSourceMaps If true then create a source-map for the generated code and include it\n     * inline as a source-map comment.\n     * @returns A map of all the variables in the generated code.\n     */\n    function evaluateStatements(sourceUrl, statements, reflector, createSourceMaps) {\n      var converter = new JitEmitterVisitor(reflector);\n      var ctx = EmitterVisitorContext.createRoot(); // Ensure generated code is in strict mode\n\n      if (statements.length > 0 && !isUseStrictStatement(statements[0])) {\n        statements = [literal('use strict').toStmt()].concat(_toConsumableArray(statements));\n      }\n\n      converter.visitAllStatements(statements, ctx);\n      converter.createReturnStmt(ctx);\n      return this.evaluateCode(sourceUrl, ctx, converter.getArgs(), createSourceMaps);\n    }\n    /**\n     * Evaluate a piece of JIT generated code.\n     * @param sourceUrl The URL of this generated code.\n     * @param ctx A context object that contains an AST of the code to be evaluated.\n     * @param vars A map containing the names and values of variables that the evaluated code might\n     * reference.\n     * @param createSourceMap If true then create a source-map for the generated code and include it\n     * inline as a source-map comment.\n     * @returns The result of evaluating the code.\n     */\n\n  }, {\n    key: \"evaluateCode\",\n    value: function evaluateCode(sourceUrl, ctx, vars, createSourceMap) {\n      var fnBody = \"\\\"use strict\\\";\".concat(ctx.toSource(), \"\\n//# sourceURL=\").concat(sourceUrl);\n      var fnArgNames = [];\n      var fnArgValues = [];\n\n      for (var argName in vars) {\n        fnArgValues.push(vars[argName]);\n        fnArgNames.push(argName);\n      }\n\n      if (createSourceMap) {\n        // using `new Function(...)` generates a header, 1 line of no arguments, 2 lines otherwise\n        // E.g. ```\n        // function anonymous(a,b,c\n        // /**/) { ... }```\n        // We don't want to hard code this fact, so we auto detect it via an empty function first.\n        var emptyFn = _construct(Function, _toConsumableArray(fnArgNames.concat('return null;'))).toString();\n\n        var headerLines = emptyFn.slice(0, emptyFn.indexOf('return null;')).split('\\n').length - 1;\n        fnBody += \"\\n\".concat(ctx.toSourceMapGenerator(sourceUrl, headerLines).toJsComment());\n      }\n\n      var fn = _construct(Function, _toConsumableArray(fnArgNames.concat(fnBody)));\n\n      return this.executeFunction(fn, fnArgValues);\n    }\n    /**\n     * Execute a JIT generated function by calling it.\n     *\n     * This method can be overridden in tests to capture the functions that are generated\n     * by this `JitEvaluator` class.\n     *\n     * @param fn A function to execute.\n     * @param args The arguments to pass to the function being executed.\n     * @returns The return value of the executed function.\n     */\n\n  }, {\n    key: \"executeFunction\",\n    value: function executeFunction(fn, args) {\n      return fn.apply(void 0, _toConsumableArray(args));\n    }\n  }]);\n\n  return JitEvaluator;\n}();\n/**\n * An Angular AST visitor that converts AST nodes into executable JavaScript code.\n */\n\n\nvar JitEmitterVisitor = /*#__PURE__*/function (_AbstractJsEmitterVis) {\n  _inherits(JitEmitterVisitor, _AbstractJsEmitterVis);\n\n  var _super52 = _createSuper(JitEmitterVisitor);\n\n  function JitEmitterVisitor(reflector) {\n    var _this85;\n\n    _classCallCheck(this, JitEmitterVisitor);\n\n    _this85 = _super52.call(this);\n    _this85.reflector = reflector;\n    _this85._evalArgNames = [];\n    _this85._evalArgValues = [];\n    _this85._evalExportedVars = [];\n    return _this85;\n  }\n\n  _createClass(JitEmitterVisitor, [{\n    key: \"createReturnStmt\",\n    value: function createReturnStmt(ctx) {\n      var stmt = new ReturnStatement(new LiteralMapExpr(this._evalExportedVars.map(function (resultVar) {\n        return new LiteralMapEntry(resultVar, variable(resultVar), false);\n      })));\n      stmt.visitStatement(this, ctx);\n    }\n  }, {\n    key: \"getArgs\",\n    value: function getArgs() {\n      var result = {};\n\n      for (var i = 0; i < this._evalArgNames.length; i++) {\n        result[this._evalArgNames[i]] = this._evalArgValues[i];\n      }\n\n      return result;\n    }\n  }, {\n    key: \"visitExternalExpr\",\n    value: function visitExternalExpr(ast, ctx) {\n      this._emitReferenceToExternal(ast, this.reflector.resolveExternalReference(ast.value), ctx);\n\n      return null;\n    }\n  }, {\n    key: \"visitWrappedNodeExpr\",\n    value: function visitWrappedNodeExpr(ast, ctx) {\n      this._emitReferenceToExternal(ast, ast.node, ctx);\n\n      return null;\n    }\n  }, {\n    key: \"visitDeclareVarStmt\",\n    value: function visitDeclareVarStmt(stmt, ctx) {\n      if (stmt.hasModifier(StmtModifier.Exported)) {\n        this._evalExportedVars.push(stmt.name);\n      }\n\n      return _get(_getPrototypeOf(JitEmitterVisitor.prototype), \"visitDeclareVarStmt\", this).call(this, stmt, ctx);\n    }\n  }, {\n    key: \"visitDeclareFunctionStmt\",\n    value: function visitDeclareFunctionStmt(stmt, ctx) {\n      if (stmt.hasModifier(StmtModifier.Exported)) {\n        this._evalExportedVars.push(stmt.name);\n      }\n\n      return _get(_getPrototypeOf(JitEmitterVisitor.prototype), \"visitDeclareFunctionStmt\", this).call(this, stmt, ctx);\n    }\n  }, {\n    key: \"visitDeclareClassStmt\",\n    value: function visitDeclareClassStmt(stmt, ctx) {\n      if (stmt.hasModifier(StmtModifier.Exported)) {\n        this._evalExportedVars.push(stmt.name);\n      }\n\n      return _get(_getPrototypeOf(JitEmitterVisitor.prototype), \"visitDeclareClassStmt\", this).call(this, stmt, ctx);\n    }\n  }, {\n    key: \"_emitReferenceToExternal\",\n    value: function _emitReferenceToExternal(ast, value, ctx) {\n      var id = this._evalArgValues.indexOf(value);\n\n      if (id === -1) {\n        id = this._evalArgValues.length;\n\n        this._evalArgValues.push(value);\n\n        var name = identifierName({\n          reference: value\n        }) || 'val';\n\n        this._evalArgNames.push(\"jit_\".concat(name, \"_\").concat(id));\n      }\n\n      ctx.print(ast, this._evalArgNames[id]);\n    }\n  }]);\n\n  return JitEmitterVisitor;\n}(AbstractJsEmitterVisitor);\n\nfunction isUseStrictStatement(statement) {\n  return statement.isEquivalent(literal('use strict').toStmt());\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar $EOF = 0;\nvar $BSPACE = 8;\nvar $TAB = 9;\nvar $LF = 10;\nvar $VTAB = 11;\nvar $FF = 12;\nvar $CR = 13;\nvar $SPACE = 32;\nvar $BANG = 33;\nvar $DQ = 34;\nvar $HASH = 35;\nvar $$ = 36;\nvar $PERCENT = 37;\nvar $AMPERSAND = 38;\nvar $SQ = 39;\nvar $LPAREN = 40;\nvar $RPAREN = 41;\nvar $STAR = 42;\nvar $PLUS = 43;\nvar $COMMA = 44;\nvar $MINUS = 45;\nvar $PERIOD = 46;\nvar $SLASH = 47;\nvar $COLON = 58;\nvar $SEMICOLON = 59;\nvar $LT = 60;\nvar $EQ = 61;\nvar $GT = 62;\nvar $QUESTION = 63;\nvar $0 = 48;\nvar $7 = 55;\nvar $9 = 57;\nvar $A = 65;\nvar $E = 69;\nvar $F = 70;\nvar $X = 88;\nvar $Z = 90;\nvar $LBRACKET = 91;\nvar $BACKSLASH = 92;\nvar $RBRACKET = 93;\nvar $CARET = 94;\nvar $_ = 95;\nvar $a = 97;\nvar $b = 98;\nvar $e = 101;\nvar $f = 102;\nvar $n = 110;\nvar $r = 114;\nvar $t = 116;\nvar $u = 117;\nvar $v = 118;\nvar $x = 120;\nvar $z = 122;\nvar $LBRACE = 123;\nvar $BAR = 124;\nvar $RBRACE = 125;\nvar $NBSP = 160;\nvar $PIPE = 124;\nvar $TILDA = 126;\nvar $AT = 64;\nvar $BT = 96;\n\nfunction isWhitespace(code) {\n  return code >= $TAB && code <= $SPACE || code == $NBSP;\n}\n\nfunction isDigit(code) {\n  return $0 <= code && code <= $9;\n}\n\nfunction isAsciiLetter(code) {\n  return code >= $a && code <= $z || code >= $A && code <= $Z;\n}\n\nfunction isAsciiHexDigit(code) {\n  return code >= $a && code <= $f || code >= $A && code <= $F || isDigit(code);\n}\n\nfunction isNewLine(code) {\n  return code === $LF || code === $CR;\n}\n\nfunction isOctalDigit(code) {\n  return $0 <= code && code <= $7;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ParseLocation = /*#__PURE__*/function () {\n  function ParseLocation(file, offset, line, col) {\n    _classCallCheck(this, ParseLocation);\n\n    this.file = file;\n    this.offset = offset;\n    this.line = line;\n    this.col = col;\n  }\n\n  _createClass(ParseLocation, [{\n    key: \"toString\",\n    value: function toString() {\n      return this.offset != null ? \"\".concat(this.file.url, \"@\").concat(this.line, \":\").concat(this.col) : this.file.url;\n    }\n  }, {\n    key: \"moveBy\",\n    value: function moveBy(delta) {\n      var source = this.file.content;\n      var len = source.length;\n      var offset = this.offset;\n      var line = this.line;\n      var col = this.col;\n\n      while (offset > 0 && delta < 0) {\n        offset--;\n        delta++;\n        var ch = source.charCodeAt(offset);\n\n        if (ch == $LF) {\n          line--;\n          var priorLine = source.substr(0, offset - 1).lastIndexOf(String.fromCharCode($LF));\n          col = priorLine > 0 ? offset - priorLine : offset;\n        } else {\n          col--;\n        }\n      }\n\n      while (offset < len && delta > 0) {\n        var _ch = source.charCodeAt(offset);\n\n        offset++;\n        delta--;\n\n        if (_ch == $LF) {\n          line++;\n          col = 0;\n        } else {\n          col++;\n        }\n      }\n\n      return new ParseLocation(this.file, offset, line, col);\n    } // Return the source around the location\n    // Up to `maxChars` or `maxLines` on each side of the location\n\n  }, {\n    key: \"getContext\",\n    value: function getContext(maxChars, maxLines) {\n      var content = this.file.content;\n      var startOffset = this.offset;\n\n      if (startOffset != null) {\n        if (startOffset > content.length - 1) {\n          startOffset = content.length - 1;\n        }\n\n        var endOffset = startOffset;\n        var ctxChars = 0;\n        var ctxLines = 0;\n\n        while (ctxChars < maxChars && startOffset > 0) {\n          startOffset--;\n          ctxChars++;\n\n          if (content[startOffset] == '\\n') {\n            if (++ctxLines == maxLines) {\n              break;\n            }\n          }\n        }\n\n        ctxChars = 0;\n        ctxLines = 0;\n\n        while (ctxChars < maxChars && endOffset < content.length - 1) {\n          endOffset++;\n          ctxChars++;\n\n          if (content[endOffset] == '\\n') {\n            if (++ctxLines == maxLines) {\n              break;\n            }\n          }\n        }\n\n        return {\n          before: content.substring(startOffset, this.offset),\n          after: content.substring(this.offset, endOffset + 1)\n        };\n      }\n\n      return null;\n    }\n  }]);\n\n  return ParseLocation;\n}();\n\nvar ParseSourceFile = /*#__PURE__*/_createClass(function ParseSourceFile(content, url) {\n  _classCallCheck(this, ParseSourceFile);\n\n  this.content = content;\n  this.url = url;\n});\n\nvar ParseSourceSpan = /*#__PURE__*/function () {\n  /**\n   * Create an object that holds information about spans of tokens/nodes captured during\n   * lexing/parsing of text.\n   *\n   * @param start\n   * The location of the start of the span (having skipped leading trivia).\n   * Skipping leading trivia makes source-spans more \"user friendly\", since things like HTML\n   * elements will appear to begin at the start of the opening tag, rather than at the start of any\n   * leading trivia, which could include newlines.\n   *\n   * @param end\n   * The location of the end of the span.\n   *\n   * @param fullStart\n   * The start of the token without skipping the leading trivia.\n   * This is used by tooling that splits tokens further, such as extracting Angular interpolations\n   * from text tokens. Such tooling creates new source-spans relative to the original token's\n   * source-span. If leading trivia characters have been skipped then the new source-spans may be\n   * incorrectly offset.\n   *\n   * @param details\n   * Additional information (such as identifier names) that should be associated with the span.\n   */\n  function ParseSourceSpan(start, end) {\n    var fullStart = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : start;\n    var details = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;\n\n    _classCallCheck(this, ParseSourceSpan);\n\n    this.start = start;\n    this.end = end;\n    this.fullStart = fullStart;\n    this.details = details;\n  }\n\n  _createClass(ParseSourceSpan, [{\n    key: \"toString\",\n    value: function toString() {\n      return this.start.file.content.substring(this.start.offset, this.end.offset);\n    }\n  }]);\n\n  return ParseSourceSpan;\n}();\n\nvar ParseErrorLevel;\n\n(function (ParseErrorLevel) {\n  ParseErrorLevel[ParseErrorLevel[\"WARNING\"] = 0] = \"WARNING\";\n  ParseErrorLevel[ParseErrorLevel[\"ERROR\"] = 1] = \"ERROR\";\n})(ParseErrorLevel || (ParseErrorLevel = {}));\n\nvar ParseError = /*#__PURE__*/function () {\n  function ParseError(span, msg) {\n    var level = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : ParseErrorLevel.ERROR;\n\n    _classCallCheck(this, ParseError);\n\n    this.span = span;\n    this.msg = msg;\n    this.level = level;\n  }\n\n  _createClass(ParseError, [{\n    key: \"contextualMessage\",\n    value: function contextualMessage() {\n      var ctx = this.span.start.getContext(100, 3);\n      return ctx ? \"\".concat(this.msg, \" (\\\"\").concat(ctx.before, \"[\").concat(ParseErrorLevel[this.level], \" ->]\").concat(ctx.after, \"\\\")\") : this.msg;\n    }\n  }, {\n    key: \"toString\",\n    value: function toString() {\n      var details = this.span.details ? \", \".concat(this.span.details) : '';\n      return \"\".concat(this.contextualMessage(), \": \").concat(this.span.start).concat(details);\n    }\n  }]);\n\n  return ParseError;\n}();\n\nfunction typeSourceSpan(kind, type) {\n  var moduleUrl = identifierModuleUrl(type);\n  var sourceFileName = moduleUrl != null ? \"in \".concat(kind, \" \").concat(identifierName(type), \" in \").concat(moduleUrl) : \"in \".concat(kind, \" \").concat(identifierName(type));\n  var sourceFile = new ParseSourceFile('', sourceFileName);\n  return new ParseSourceSpan(new ParseLocation(sourceFile, -1, -1, -1), new ParseLocation(sourceFile, -1, -1, -1));\n}\n/**\n * Generates Source Span object for a given R3 Type for JIT mode.\n *\n * @param kind Component or Directive.\n * @param typeName name of the Component or Directive.\n * @param sourceUrl reference to Component or Directive source.\n * @returns instance of ParseSourceSpan that represent a given Component or Directive.\n */\n\n\nfunction r3JitTypeSourceSpan(kind, typeName, sourceUrl) {\n  var sourceFileName = \"in \".concat(kind, \" \").concat(typeName, \" in \").concat(sourceUrl);\n  var sourceFile = new ParseSourceFile('', sourceFileName);\n  return new ParseSourceSpan(new ParseLocation(sourceFile, -1, -1, -1), new ParseLocation(sourceFile, -1, -1, -1));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Implementation of `CompileReflector` which resolves references to @angular/core\n * symbols at runtime, according to a consumer-provided mapping.\n *\n * Only supports `resolveExternalReference`, all other methods throw.\n */\n\n\nvar R3JitReflector = /*#__PURE__*/function () {\n  function R3JitReflector(context) {\n    _classCallCheck(this, R3JitReflector);\n\n    this.context = context;\n  }\n\n  _createClass(R3JitReflector, [{\n    key: \"resolveExternalReference\",\n    value: function resolveExternalReference(ref) {\n      // This reflector only handles @angular/core imports.\n      if (ref.moduleName !== '@angular/core') {\n        throw new Error(\"Cannot resolve external reference to \".concat(ref.moduleName, \", only references to @angular/core are supported.\"));\n      }\n\n      if (!this.context.hasOwnProperty(ref.name)) {\n        throw new Error(\"No value provided for @angular/core symbol '\".concat(ref.name, \"'.\"));\n      }\n\n      return this.context[ref.name];\n    }\n  }, {\n    key: \"parameters\",\n    value: function parameters(typeOrFunc) {\n      throw new Error('Not implemented.');\n    }\n  }, {\n    key: \"annotations\",\n    value: function annotations(typeOrFunc) {\n      throw new Error('Not implemented.');\n    }\n  }, {\n    key: \"shallowAnnotations\",\n    value: function shallowAnnotations(typeOrFunc) {\n      throw new Error('Not implemented.');\n    }\n  }, {\n    key: \"tryAnnotations\",\n    value: function tryAnnotations(typeOrFunc) {\n      throw new Error('Not implemented.');\n    }\n  }, {\n    key: \"propMetadata\",\n    value: function propMetadata(typeOrFunc) {\n      throw new Error('Not implemented.');\n    }\n  }, {\n    key: \"hasLifecycleHook\",\n    value: function hasLifecycleHook(type, lcProperty) {\n      throw new Error('Not implemented.');\n    }\n  }, {\n    key: \"guards\",\n    value: function guards(typeOrFunc) {\n      throw new Error('Not implemented.');\n    }\n  }, {\n    key: \"componentModuleUrl\",\n    value: function componentModuleUrl(type, cmpMetadata) {\n      throw new Error('Not implemented.');\n    }\n  }]);\n\n  return R3JitReflector;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction mapEntry(key, value) {\n  return {\n    key: key,\n    value: value,\n    quoted: false\n  };\n}\n\nfunction mapLiteral(obj) {\n  var quoted = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n  return literalMap(Object.keys(obj).map(function (key) {\n    return {\n      key: key,\n      quoted: quoted,\n      value: obj[key]\n    };\n  }));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Construct an `R3NgModuleDef` for the given `R3NgModuleMetadata`.\n */\n\n\nfunction _compileNgModule(meta) {\n  var internalType = meta.internalType,\n      moduleType = meta.type,\n      bootstrap = meta.bootstrap,\n      declarations = meta.declarations,\n      imports = meta.imports,\n      exports = meta.exports,\n      schemas = meta.schemas,\n      containsForwardDecls = meta.containsForwardDecls,\n      emitInline = meta.emitInline,\n      id = meta.id;\n  var additionalStatements = [];\n  var definitionMap = {\n    type: internalType\n  }; // Only generate the keys in the metadata if the arrays have values.\n\n  if (bootstrap.length) {\n    definitionMap.bootstrap = refsToArray(bootstrap, containsForwardDecls);\n  } // If requested to emit scope information inline, pass the declarations, imports and exports to\n  // the `ɵɵdefineNgModule` call. The JIT compilation uses this.\n\n\n  if (emitInline) {\n    if (declarations.length) {\n      definitionMap.declarations = refsToArray(declarations, containsForwardDecls);\n    }\n\n    if (imports.length) {\n      definitionMap.imports = refsToArray(imports, containsForwardDecls);\n    }\n\n    if (exports.length) {\n      definitionMap.exports = refsToArray(exports, containsForwardDecls);\n    }\n  } // If not emitting inline, the scope information is not passed into `ɵɵdefineNgModule` as it would\n  // prevent tree-shaking of the declarations, imports and exports references.\n  else {\n    var setNgModuleScopeCall = generateSetNgModuleScopeCall(meta);\n\n    if (setNgModuleScopeCall !== null) {\n      additionalStatements.push(setNgModuleScopeCall);\n    }\n  }\n\n  if (schemas && schemas.length) {\n    definitionMap.schemas = literalArr(schemas.map(function (ref) {\n      return ref.value;\n    }));\n  }\n\n  if (id) {\n    definitionMap.id = id;\n  }\n\n  var expression = importExpr(Identifiers$1.defineNgModule).callFn([mapToMapExpression(definitionMap)]);\n  var type = new ExpressionType(importExpr(Identifiers$1.NgModuleDefWithMeta, [new ExpressionType(moduleType.type), tupleTypeOf(declarations), tupleTypeOf(imports), tupleTypeOf(exports)]));\n  return {\n    expression: expression,\n    type: type,\n    additionalStatements: additionalStatements\n  };\n}\n/**\n * Generates a function call to `ɵɵsetNgModuleScope` with all necessary information so that the\n * transitive module scope can be computed during runtime in JIT mode. This call is marked pure\n * such that the references to declarations, imports and exports may be elided causing these\n * symbols to become tree-shakeable.\n */\n\n\nfunction generateSetNgModuleScopeCall(meta) {\n  var moduleType = meta.adjacentType,\n      declarations = meta.declarations,\n      imports = meta.imports,\n      exports = meta.exports,\n      containsForwardDecls = meta.containsForwardDecls;\n  var scopeMap = {};\n\n  if (declarations.length) {\n    scopeMap.declarations = refsToArray(declarations, containsForwardDecls);\n  }\n\n  if (imports.length) {\n    scopeMap.imports = refsToArray(imports, containsForwardDecls);\n  }\n\n  if (exports.length) {\n    scopeMap.exports = refsToArray(exports, containsForwardDecls);\n  }\n\n  if (Object.keys(scopeMap).length === 0) {\n    return null;\n  } // setNgModuleScope(...)\n\n\n  var fnCall = new InvokeFunctionExpr(\n  /* fn */\n  importExpr(Identifiers$1.setNgModuleScope),\n  /* args */\n  [moduleType, mapToMapExpression(scopeMap)]); // (ngJitMode guard) && setNgModuleScope(...)\n\n  var guardedCall = jitOnlyGuardedExpression(fnCall); // function() { (ngJitMode guard) && setNgModuleScope(...); }\n\n  var iife = new FunctionExpr(\n  /* params */\n  [],\n  /* statements */\n  [guardedCall.toStmt()]); // (function() { (ngJitMode guard) && setNgModuleScope(...); })()\n\n  var iifeCall = new InvokeFunctionExpr(\n  /* fn */\n  iife,\n  /* args */\n  []);\n  return iifeCall.toStmt();\n}\n\nfunction _compileInjector(meta) {\n  var result = compileFactoryFunction({\n    name: meta.name,\n    type: meta.type,\n    internalType: meta.internalType,\n    typeArgumentCount: 0,\n    deps: meta.deps,\n    injectFn: Identifiers$1.inject,\n    target: R3FactoryTarget.NgModule\n  });\n  var definitionMap = {\n    factory: result.factory\n  };\n\n  if (meta.providers !== null) {\n    definitionMap.providers = meta.providers;\n  }\n\n  if (meta.imports.length > 0) {\n    definitionMap.imports = literalArr(meta.imports);\n  }\n\n  var expression = importExpr(Identifiers$1.defineInjector).callFn([mapToMapExpression(definitionMap)]);\n  var type = new ExpressionType(importExpr(Identifiers$1.InjectorDef, [new ExpressionType(meta.type.type)]));\n  return {\n    expression: expression,\n    type: type,\n    statements: result.statements\n  };\n} // TODO(alxhub): integrate this with `compileNgModule`. Currently the two are separate operations.\n\n\nfunction compileNgModuleFromRender2(ctx, ngModule, injectableCompiler) {\n  var className = identifierName(ngModule.type);\n  var rawImports = ngModule.rawImports ? [ngModule.rawImports] : [];\n  var rawExports = ngModule.rawExports ? [ngModule.rawExports] : [];\n  var injectorDefArg = mapLiteral({\n    'factory': injectableCompiler.factoryFor({\n      type: ngModule.type,\n      symbol: ngModule.type.reference\n    }, ctx),\n    'providers': convertMetaToOutput(ngModule.rawProviders, ctx),\n    'imports': convertMetaToOutput([].concat(rawImports, rawExports), ctx)\n  });\n  var injectorDef = importExpr(Identifiers$1.defineInjector).callFn([injectorDefArg]);\n  ctx.statements.push(new ClassStmt(\n  /* name */\n  className,\n  /* parent */\n  null,\n  /* fields */\n  [new ClassField(\n  /* name */\n  'ɵinj',\n  /* type */\n  INFERRED_TYPE,\n  /* modifiers */\n  [StmtModifier.Static],\n  /* initializer */\n  injectorDef)],\n  /* getters */\n  [],\n  /* constructorMethod */\n  new ClassMethod(null, [], []),\n  /* methods */\n  []));\n}\n\nfunction accessExportScope(module) {\n  var selectorScope = new ReadPropExpr(module, 'ɵmod');\n  return new ReadPropExpr(selectorScope, 'exported');\n}\n\nfunction tupleTypeOf(exp) {\n  var types = exp.map(function (ref) {\n    return typeofExpr(ref.type);\n  });\n  return exp.length > 0 ? expressionType(literalArr(types)) : NONE_TYPE;\n}\n\nfunction refsToArray(refs, shouldForwardDeclare) {\n  var values = literalArr(refs.map(function (ref) {\n    return ref.value;\n  }));\n  return shouldForwardDeclare ? fn([], [new ReturnStatement(values)]) : values;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction compilePipeFromMetadata(metadata) {\n  var definitionMapValues = []; // e.g. `name: 'myPipe'`\n\n  definitionMapValues.push({\n    key: 'name',\n    value: literal(metadata.pipeName),\n    quoted: false\n  }); // e.g. `type: MyPipe`\n\n  definitionMapValues.push({\n    key: 'type',\n    value: metadata.type.value,\n    quoted: false\n  }); // e.g. `pure: true`\n\n  definitionMapValues.push({\n    key: 'pure',\n    value: literal(metadata.pure),\n    quoted: false\n  });\n  var expression = importExpr(Identifiers$1.definePipe).callFn([literalMap(definitionMapValues)]);\n  var type = new ExpressionType(importExpr(Identifiers$1.PipeDefWithMeta, [typeWithParameters(metadata.type.type, metadata.typeArgumentCount), new ExpressionType(new LiteralExpr(metadata.pipeName))]));\n  return {\n    expression: expression,\n    type: type\n  };\n}\n/**\n * Write a pipe definition to the output context.\n */\n\n\nfunction compilePipeFromRender2(outputCtx, pipe, reflector) {\n  var name = identifierName(pipe.type);\n\n  if (!name) {\n    return error(\"Cannot resolve the name of \".concat(pipe.type));\n  }\n\n  var type = outputCtx.importExpr(pipe.type.reference);\n  var metadata = {\n    name: name,\n    type: wrapReference(type),\n    internalType: type,\n    pipeName: pipe.name,\n    typeArgumentCount: 0,\n    deps: dependenciesFromGlobalMetadata(pipe.type, outputCtx, reflector),\n    pure: pipe.pure\n  };\n  var res = compilePipeFromMetadata(metadata);\n  var factoryRes = compileFactoryFunction(Object.assign(Object.assign({}, metadata), {\n    injectFn: Identifiers$1.directiveInject,\n    target: R3FactoryTarget.Pipe\n  }));\n  var definitionField = outputCtx.constantPool.propertyNameOf(3\n  /* Pipe */\n  );\n  var ngFactoryDefStatement = new ClassStmt(\n  /* name */\n  name,\n  /* parent */\n  null,\n  /* fields */\n  [new ClassField(\n  /* name */\n  'ɵfac',\n  /* type */\n  INFERRED_TYPE,\n  /* modifiers */\n  [StmtModifier.Static],\n  /* initializer */\n  factoryRes.factory)],\n  /* getters */\n  [],\n  /* constructorMethod */\n  new ClassMethod(null, [], []),\n  /* methods */\n  []);\n  var pipeDefStatement = new ClassStmt(\n  /* name */\n  name,\n  /* parent */\n  null,\n  /* fields */\n  [new ClassField(\n  /* name */\n  definitionField,\n  /* type */\n  INFERRED_TYPE,\n  /* modifiers */\n  [StmtModifier.Static],\n  /* initializer */\n  res.expression)],\n  /* getters */\n  [],\n  /* constructorMethod */\n  new ClassMethod(null, [], []),\n  /* methods */\n  []);\n  outputCtx.statements.push(ngFactoryDefStatement, pipeDefStatement);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ParserError = /*#__PURE__*/_createClass(function ParserError(message, input, errLocation, ctxLocation) {\n  _classCallCheck(this, ParserError);\n\n  this.input = input;\n  this.errLocation = errLocation;\n  this.ctxLocation = ctxLocation;\n  this.message = \"Parser Error: \".concat(message, \" \").concat(errLocation, \" [\").concat(input, \"] in \").concat(ctxLocation);\n});\n\nvar ParseSpan = /*#__PURE__*/function () {\n  function ParseSpan(start, end) {\n    _classCallCheck(this, ParseSpan);\n\n    this.start = start;\n    this.end = end;\n  }\n\n  _createClass(ParseSpan, [{\n    key: \"toAbsolute\",\n    value: function toAbsolute(absoluteOffset) {\n      return new AbsoluteSourceSpan(absoluteOffset + this.start, absoluteOffset + this.end);\n    }\n  }]);\n\n  return ParseSpan;\n}();\n\nvar AST = /*#__PURE__*/function () {\n  function AST(span,\n  /**\n   * Absolute location of the expression AST in a source code file.\n   */\n  sourceSpan) {\n    _classCallCheck(this, AST);\n\n    this.span = span;\n    this.sourceSpan = sourceSpan;\n  }\n\n  _createClass(AST, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return null;\n    }\n  }, {\n    key: \"toString\",\n    value: function toString() {\n      return 'AST';\n    }\n  }]);\n\n  return AST;\n}();\n\nvar ASTWithName = /*#__PURE__*/function (_AST) {\n  _inherits(ASTWithName, _AST);\n\n  var _super53 = _createSuper(ASTWithName);\n\n  function ASTWithName(span, sourceSpan, nameSpan) {\n    var _this86;\n\n    _classCallCheck(this, ASTWithName);\n\n    _this86 = _super53.call(this, span, sourceSpan);\n    _this86.nameSpan = nameSpan;\n    return _this86;\n  }\n\n  return _createClass(ASTWithName);\n}(AST);\n/**\n * Represents a quoted expression of the form:\n *\n * quote = prefix `:` uninterpretedExpression\n * prefix = identifier\n * uninterpretedExpression = arbitrary string\n *\n * A quoted expression is meant to be pre-processed by an AST transformer that\n * converts it into another AST that no longer contains quoted expressions.\n * It is meant to allow third-party developers to extend Angular template\n * expression language. The `uninterpretedExpression` part of the quote is\n * therefore not interpreted by the Angular's own expression parser.\n */\n\n\nvar Quote = /*#__PURE__*/function (_AST2) {\n  _inherits(Quote, _AST2);\n\n  var _super54 = _createSuper(Quote);\n\n  function Quote(span, sourceSpan, prefix, uninterpretedExpression, location) {\n    var _this87;\n\n    _classCallCheck(this, Quote);\n\n    _this87 = _super54.call(this, span, sourceSpan);\n    _this87.prefix = prefix;\n    _this87.uninterpretedExpression = uninterpretedExpression;\n    _this87.location = location;\n    return _this87;\n  }\n\n  _createClass(Quote, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitQuote(this, context);\n    }\n  }, {\n    key: \"toString\",\n    value: function toString() {\n      return 'Quote';\n    }\n  }]);\n\n  return Quote;\n}(AST);\n\nvar EmptyExpr = /*#__PURE__*/function (_AST3) {\n  _inherits(EmptyExpr, _AST3);\n\n  var _super55 = _createSuper(EmptyExpr);\n\n  function EmptyExpr() {\n    _classCallCheck(this, EmptyExpr);\n\n    return _super55.apply(this, arguments);\n  }\n\n  _createClass(EmptyExpr, [{\n    key: \"visit\",\n    value: function visit(visitor) {// do nothing\n\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n    }\n  }]);\n\n  return EmptyExpr;\n}(AST);\n\nvar ImplicitReceiver = /*#__PURE__*/function (_AST4) {\n  _inherits(ImplicitReceiver, _AST4);\n\n  var _super56 = _createSuper(ImplicitReceiver);\n\n  function ImplicitReceiver() {\n    _classCallCheck(this, ImplicitReceiver);\n\n    return _super56.apply(this, arguments);\n  }\n\n  _createClass(ImplicitReceiver, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitImplicitReceiver(this, context);\n    }\n  }]);\n\n  return ImplicitReceiver;\n}(AST);\n/**\n * Receiver when something is accessed through `this` (e.g. `this.foo`). Note that this class\n * inherits from `ImplicitReceiver`, because accessing something through `this` is treated the\n * same as accessing it implicitly inside of an Angular template (e.g. `[attr.title]=\"this.title\"`\n * is the same as `[attr.title]=\"title\"`.). Inheriting allows for the `this` accesses to be treated\n * the same as implicit ones, except for a couple of exceptions like `$event` and `$any`.\n * TODO: we should find a way for this class not to extend from `ImplicitReceiver` in the future.\n */\n\n\nvar ThisReceiver = /*#__PURE__*/function (_ImplicitReceiver) {\n  _inherits(ThisReceiver, _ImplicitReceiver);\n\n  var _super57 = _createSuper(ThisReceiver);\n\n  function ThisReceiver() {\n    _classCallCheck(this, ThisReceiver);\n\n    return _super57.apply(this, arguments);\n  }\n\n  _createClass(ThisReceiver, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n\n      var _a;\n\n      return (_a = visitor.visitThisReceiver) === null || _a === void 0 ? void 0 : _a.call(visitor, this, context);\n    }\n  }]);\n\n  return ThisReceiver;\n}(ImplicitReceiver);\n/**\n * Multiple expressions separated by a semicolon.\n */\n\n\nvar Chain = /*#__PURE__*/function (_AST5) {\n  _inherits(Chain, _AST5);\n\n  var _super58 = _createSuper(Chain);\n\n  function Chain(span, sourceSpan, expressions) {\n    var _this88;\n\n    _classCallCheck(this, Chain);\n\n    _this88 = _super58.call(this, span, sourceSpan);\n    _this88.expressions = expressions;\n    return _this88;\n  }\n\n  _createClass(Chain, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitChain(this, context);\n    }\n  }]);\n\n  return Chain;\n}(AST);\n\nvar Conditional = /*#__PURE__*/function (_AST6) {\n  _inherits(Conditional, _AST6);\n\n  var _super59 = _createSuper(Conditional);\n\n  function Conditional(span, sourceSpan, condition, trueExp, falseExp) {\n    var _this89;\n\n    _classCallCheck(this, Conditional);\n\n    _this89 = _super59.call(this, span, sourceSpan);\n    _this89.condition = condition;\n    _this89.trueExp = trueExp;\n    _this89.falseExp = falseExp;\n    return _this89;\n  }\n\n  _createClass(Conditional, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitConditional(this, context);\n    }\n  }]);\n\n  return Conditional;\n}(AST);\n\nvar PropertyRead = /*#__PURE__*/function (_ASTWithName) {\n  _inherits(PropertyRead, _ASTWithName);\n\n  var _super60 = _createSuper(PropertyRead);\n\n  function PropertyRead(span, sourceSpan, nameSpan, receiver, name) {\n    var _this90;\n\n    _classCallCheck(this, PropertyRead);\n\n    _this90 = _super60.call(this, span, sourceSpan, nameSpan);\n    _this90.receiver = receiver;\n    _this90.name = name;\n    return _this90;\n  }\n\n  _createClass(PropertyRead, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitPropertyRead(this, context);\n    }\n  }]);\n\n  return PropertyRead;\n}(ASTWithName);\n\nvar PropertyWrite = /*#__PURE__*/function (_ASTWithName2) {\n  _inherits(PropertyWrite, _ASTWithName2);\n\n  var _super61 = _createSuper(PropertyWrite);\n\n  function PropertyWrite(span, sourceSpan, nameSpan, receiver, name, value) {\n    var _this91;\n\n    _classCallCheck(this, PropertyWrite);\n\n    _this91 = _super61.call(this, span, sourceSpan, nameSpan);\n    _this91.receiver = receiver;\n    _this91.name = name;\n    _this91.value = value;\n    return _this91;\n  }\n\n  _createClass(PropertyWrite, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitPropertyWrite(this, context);\n    }\n  }]);\n\n  return PropertyWrite;\n}(ASTWithName);\n\nvar SafePropertyRead = /*#__PURE__*/function (_ASTWithName3) {\n  _inherits(SafePropertyRead, _ASTWithName3);\n\n  var _super62 = _createSuper(SafePropertyRead);\n\n  function SafePropertyRead(span, sourceSpan, nameSpan, receiver, name) {\n    var _this92;\n\n    _classCallCheck(this, SafePropertyRead);\n\n    _this92 = _super62.call(this, span, sourceSpan, nameSpan);\n    _this92.receiver = receiver;\n    _this92.name = name;\n    return _this92;\n  }\n\n  _createClass(SafePropertyRead, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitSafePropertyRead(this, context);\n    }\n  }]);\n\n  return SafePropertyRead;\n}(ASTWithName);\n\nvar KeyedRead = /*#__PURE__*/function (_AST7) {\n  _inherits(KeyedRead, _AST7);\n\n  var _super63 = _createSuper(KeyedRead);\n\n  function KeyedRead(span, sourceSpan, obj, key) {\n    var _this93;\n\n    _classCallCheck(this, KeyedRead);\n\n    _this93 = _super63.call(this, span, sourceSpan);\n    _this93.obj = obj;\n    _this93.key = key;\n    return _this93;\n  }\n\n  _createClass(KeyedRead, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitKeyedRead(this, context);\n    }\n  }]);\n\n  return KeyedRead;\n}(AST);\n\nvar KeyedWrite = /*#__PURE__*/function (_AST8) {\n  _inherits(KeyedWrite, _AST8);\n\n  var _super64 = _createSuper(KeyedWrite);\n\n  function KeyedWrite(span, sourceSpan, obj, key, value) {\n    var _this94;\n\n    _classCallCheck(this, KeyedWrite);\n\n    _this94 = _super64.call(this, span, sourceSpan);\n    _this94.obj = obj;\n    _this94.key = key;\n    _this94.value = value;\n    return _this94;\n  }\n\n  _createClass(KeyedWrite, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitKeyedWrite(this, context);\n    }\n  }]);\n\n  return KeyedWrite;\n}(AST);\n\nvar BindingPipe = /*#__PURE__*/function (_ASTWithName4) {\n  _inherits(BindingPipe, _ASTWithName4);\n\n  var _super65 = _createSuper(BindingPipe);\n\n  function BindingPipe(span, sourceSpan, exp, name, args, nameSpan) {\n    var _this95;\n\n    _classCallCheck(this, BindingPipe);\n\n    _this95 = _super65.call(this, span, sourceSpan, nameSpan);\n    _this95.exp = exp;\n    _this95.name = name;\n    _this95.args = args;\n    return _this95;\n  }\n\n  _createClass(BindingPipe, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitPipe(this, context);\n    }\n  }]);\n\n  return BindingPipe;\n}(ASTWithName);\n\nvar LiteralPrimitive = /*#__PURE__*/function (_AST9) {\n  _inherits(LiteralPrimitive, _AST9);\n\n  var _super66 = _createSuper(LiteralPrimitive);\n\n  function LiteralPrimitive(span, sourceSpan, value) {\n    var _this96;\n\n    _classCallCheck(this, LiteralPrimitive);\n\n    _this96 = _super66.call(this, span, sourceSpan);\n    _this96.value = value;\n    return _this96;\n  }\n\n  _createClass(LiteralPrimitive, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitLiteralPrimitive(this, context);\n    }\n  }]);\n\n  return LiteralPrimitive;\n}(AST);\n\nvar LiteralArray = /*#__PURE__*/function (_AST10) {\n  _inherits(LiteralArray, _AST10);\n\n  var _super67 = _createSuper(LiteralArray);\n\n  function LiteralArray(span, sourceSpan, expressions) {\n    var _this97;\n\n    _classCallCheck(this, LiteralArray);\n\n    _this97 = _super67.call(this, span, sourceSpan);\n    _this97.expressions = expressions;\n    return _this97;\n  }\n\n  _createClass(LiteralArray, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitLiteralArray(this, context);\n    }\n  }]);\n\n  return LiteralArray;\n}(AST);\n\nvar LiteralMap = /*#__PURE__*/function (_AST11) {\n  _inherits(LiteralMap, _AST11);\n\n  var _super68 = _createSuper(LiteralMap);\n\n  function LiteralMap(span, sourceSpan, keys, values) {\n    var _this98;\n\n    _classCallCheck(this, LiteralMap);\n\n    _this98 = _super68.call(this, span, sourceSpan);\n    _this98.keys = keys;\n    _this98.values = values;\n    return _this98;\n  }\n\n  _createClass(LiteralMap, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitLiteralMap(this, context);\n    }\n  }]);\n\n  return LiteralMap;\n}(AST);\n\nvar Interpolation = /*#__PURE__*/function (_AST12) {\n  _inherits(Interpolation, _AST12);\n\n  var _super69 = _createSuper(Interpolation);\n\n  function Interpolation(span, sourceSpan, strings, expressions) {\n    var _this99;\n\n    _classCallCheck(this, Interpolation);\n\n    _this99 = _super69.call(this, span, sourceSpan);\n    _this99.strings = strings;\n    _this99.expressions = expressions;\n    return _this99;\n  }\n\n  _createClass(Interpolation, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitInterpolation(this, context);\n    }\n  }]);\n\n  return Interpolation;\n}(AST);\n\nvar Binary = /*#__PURE__*/function (_AST13) {\n  _inherits(Binary, _AST13);\n\n  var _super70 = _createSuper(Binary);\n\n  function Binary(span, sourceSpan, operation, left, right) {\n    var _this100;\n\n    _classCallCheck(this, Binary);\n\n    _this100 = _super70.call(this, span, sourceSpan);\n    _this100.operation = operation;\n    _this100.left = left;\n    _this100.right = right;\n    return _this100;\n  }\n\n  _createClass(Binary, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitBinary(this, context);\n    }\n  }]);\n\n  return Binary;\n}(AST);\n/**\n * For backwards compatibility reasons, `Unary` inherits from `Binary` and mimics the binary AST\n * node that was originally used. This inheritance relation can be deleted in some future major,\n * after consumers have been given a chance to fully support Unary.\n */\n\n\nvar Unary = /*#__PURE__*/function (_Binary) {\n  _inherits(Unary, _Binary);\n\n  var _super71 = _createSuper(Unary);\n\n  /**\n   * During the deprecation period this constructor is private, to avoid consumers from creating\n   * a `Unary` with the fallback properties for `Binary`.\n   */\n  function Unary(span, sourceSpan, operator, expr, binaryOp, binaryLeft, binaryRight) {\n    var _this101;\n\n    _classCallCheck(this, Unary);\n\n    _this101 = _super71.call(this, span, sourceSpan, binaryOp, binaryLeft, binaryRight);\n    _this101.operator = operator;\n    _this101.expr = expr;\n    return _this101;\n  }\n  /**\n   * Creates a unary minus expression \"-x\", represented as `Binary` using \"0 - x\".\n   */\n\n\n  _createClass(Unary, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n\n      if (visitor.visitUnary !== undefined) {\n        return visitor.visitUnary(this, context);\n      }\n\n      return visitor.visitBinary(this, context);\n    }\n  }], [{\n    key: \"createMinus\",\n    value: function createMinus(span, sourceSpan, expr) {\n      return new Unary(span, sourceSpan, '-', expr, '-', new LiteralPrimitive(span, sourceSpan, 0), expr);\n    }\n    /**\n     * Creates a unary plus expression \"+x\", represented as `Binary` using \"x - 0\".\n     */\n\n  }, {\n    key: \"createPlus\",\n    value: function createPlus(span, sourceSpan, expr) {\n      return new Unary(span, sourceSpan, '+', expr, '-', expr, new LiteralPrimitive(span, sourceSpan, 0));\n    }\n  }]);\n\n  return Unary;\n}(Binary);\n\nvar PrefixNot = /*#__PURE__*/function (_AST14) {\n  _inherits(PrefixNot, _AST14);\n\n  var _super72 = _createSuper(PrefixNot);\n\n  function PrefixNot(span, sourceSpan, expression) {\n    var _this102;\n\n    _classCallCheck(this, PrefixNot);\n\n    _this102 = _super72.call(this, span, sourceSpan);\n    _this102.expression = expression;\n    return _this102;\n  }\n\n  _createClass(PrefixNot, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitPrefixNot(this, context);\n    }\n  }]);\n\n  return PrefixNot;\n}(AST);\n\nvar NonNullAssert = /*#__PURE__*/function (_AST15) {\n  _inherits(NonNullAssert, _AST15);\n\n  var _super73 = _createSuper(NonNullAssert);\n\n  function NonNullAssert(span, sourceSpan, expression) {\n    var _this103;\n\n    _classCallCheck(this, NonNullAssert);\n\n    _this103 = _super73.call(this, span, sourceSpan);\n    _this103.expression = expression;\n    return _this103;\n  }\n\n  _createClass(NonNullAssert, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitNonNullAssert(this, context);\n    }\n  }]);\n\n  return NonNullAssert;\n}(AST);\n\nvar MethodCall = /*#__PURE__*/function (_ASTWithName5) {\n  _inherits(MethodCall, _ASTWithName5);\n\n  var _super74 = _createSuper(MethodCall);\n\n  function MethodCall(span, sourceSpan, nameSpan, receiver, name, args) {\n    var _this104;\n\n    _classCallCheck(this, MethodCall);\n\n    _this104 = _super74.call(this, span, sourceSpan, nameSpan);\n    _this104.receiver = receiver;\n    _this104.name = name;\n    _this104.args = args;\n    return _this104;\n  }\n\n  _createClass(MethodCall, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitMethodCall(this, context);\n    }\n  }]);\n\n  return MethodCall;\n}(ASTWithName);\n\nvar SafeMethodCall = /*#__PURE__*/function (_ASTWithName6) {\n  _inherits(SafeMethodCall, _ASTWithName6);\n\n  var _super75 = _createSuper(SafeMethodCall);\n\n  function SafeMethodCall(span, sourceSpan, nameSpan, receiver, name, args) {\n    var _this105;\n\n    _classCallCheck(this, SafeMethodCall);\n\n    _this105 = _super75.call(this, span, sourceSpan, nameSpan);\n    _this105.receiver = receiver;\n    _this105.name = name;\n    _this105.args = args;\n    return _this105;\n  }\n\n  _createClass(SafeMethodCall, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitSafeMethodCall(this, context);\n    }\n  }]);\n\n  return SafeMethodCall;\n}(ASTWithName);\n\nvar FunctionCall = /*#__PURE__*/function (_AST16) {\n  _inherits(FunctionCall, _AST16);\n\n  var _super76 = _createSuper(FunctionCall);\n\n  function FunctionCall(span, sourceSpan, target, args) {\n    var _this106;\n\n    _classCallCheck(this, FunctionCall);\n\n    _this106 = _super76.call(this, span, sourceSpan);\n    _this106.target = target;\n    _this106.args = args;\n    return _this106;\n  }\n\n  _createClass(FunctionCall, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      return visitor.visitFunctionCall(this, context);\n    }\n  }]);\n\n  return FunctionCall;\n}(AST);\n/**\n * Records the absolute position of a text span in a source file, where `start` and `end` are the\n * starting and ending byte offsets, respectively, of the text span in a source file.\n */\n\n\nvar AbsoluteSourceSpan = /*#__PURE__*/_createClass(function AbsoluteSourceSpan(start, end) {\n  _classCallCheck(this, AbsoluteSourceSpan);\n\n  this.start = start;\n  this.end = end;\n});\n\nvar ASTWithSource = /*#__PURE__*/function (_AST17) {\n  _inherits(ASTWithSource, _AST17);\n\n  var _super77 = _createSuper(ASTWithSource);\n\n  function ASTWithSource(ast, source, location, absoluteOffset, errors) {\n    var _this107;\n\n    _classCallCheck(this, ASTWithSource);\n\n    _this107 = _super77.call(this, new ParseSpan(0, source === null ? 0 : source.length), new AbsoluteSourceSpan(absoluteOffset, source === null ? absoluteOffset : absoluteOffset + source.length));\n    _this107.ast = ast;\n    _this107.source = source;\n    _this107.location = location;\n    _this107.errors = errors;\n    return _this107;\n  }\n\n  _createClass(ASTWithSource, [{\n    key: \"visit\",\n    value: function visit(visitor) {\n      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n\n      if (visitor.visitASTWithSource) {\n        return visitor.visitASTWithSource(this, context);\n      }\n\n      return this.ast.visit(visitor, context);\n    }\n  }, {\n    key: \"toString\",\n    value: function toString() {\n      return \"\".concat(this.source, \" in \").concat(this.location);\n    }\n  }]);\n\n  return ASTWithSource;\n}(AST);\n\nvar VariableBinding = /*#__PURE__*/_createClass(\n/**\n * @param sourceSpan entire span of the binding.\n * @param key name of the LHS along with its span.\n * @param value optional value for the RHS along with its span.\n */\nfunction VariableBinding(sourceSpan, key, value) {\n  _classCallCheck(this, VariableBinding);\n\n  this.sourceSpan = sourceSpan;\n  this.key = key;\n  this.value = value;\n});\n\nvar ExpressionBinding = /*#__PURE__*/_createClass(\n/**\n * @param sourceSpan entire span of the binding.\n * @param key binding name, like ngForOf, ngForTrackBy, ngIf, along with its\n * span. Note that the length of the span may not be the same as\n * `key.source.length`. For example,\n * 1. key.source = ngFor, key.span is for \"ngFor\"\n * 2. key.source = ngForOf, key.span is for \"of\"\n * 3. key.source = ngForTrackBy, key.span is for \"trackBy\"\n * @param value optional expression for the RHS.\n */\nfunction ExpressionBinding(sourceSpan, key, value) {\n  _classCallCheck(this, ExpressionBinding);\n\n  this.sourceSpan = sourceSpan;\n  this.key = key;\n  this.value = value;\n});\n\nvar RecursiveAstVisitor$1 = /*#__PURE__*/function () {\n  function RecursiveAstVisitor$1() {\n    _classCallCheck(this, RecursiveAstVisitor$1);\n  }\n\n  _createClass(RecursiveAstVisitor$1, [{\n    key: \"visit\",\n    value: function visit(ast, context) {\n      // The default implementation just visits every node.\n      // Classes that extend RecursiveAstVisitor should override this function\n      // to selectively visit the specified node.\n      ast.visit(this, context);\n    }\n  }, {\n    key: \"visitUnary\",\n    value: function visitUnary(ast, context) {\n      this.visit(ast.expr, context);\n    }\n  }, {\n    key: \"visitBinary\",\n    value: function visitBinary(ast, context) {\n      this.visit(ast.left, context);\n      this.visit(ast.right, context);\n    }\n  }, {\n    key: \"visitChain\",\n    value: function visitChain(ast, context) {\n      this.visitAll(ast.expressions, context);\n    }\n  }, {\n    key: \"visitConditional\",\n    value: function visitConditional(ast, context) {\n      this.visit(ast.condition, context);\n      this.visit(ast.trueExp, context);\n      this.visit(ast.falseExp, context);\n    }\n  }, {\n    key: \"visitPipe\",\n    value: function visitPipe(ast, context) {\n      this.visit(ast.exp, context);\n      this.visitAll(ast.args, context);\n    }\n  }, {\n    key: \"visitFunctionCall\",\n    value: function visitFunctionCall(ast, context) {\n      if (ast.target) {\n        this.visit(ast.target, context);\n      }\n\n      this.visitAll(ast.args, context);\n    }\n  }, {\n    key: \"visitImplicitReceiver\",\n    value: function visitImplicitReceiver(ast, context) {}\n  }, {\n    key: \"visitThisReceiver\",\n    value: function visitThisReceiver(ast, context) {}\n  }, {\n    key: \"visitInterpolation\",\n    value: function visitInterpolation(ast, context) {\n      this.visitAll(ast.expressions, context);\n    }\n  }, {\n    key: \"visitKeyedRead\",\n    value: function visitKeyedRead(ast, context) {\n      this.visit(ast.obj, context);\n      this.visit(ast.key, context);\n    }\n  }, {\n    key: \"visitKeyedWrite\",\n    value: function visitKeyedWrite(ast, context) {\n      this.visit(ast.obj, context);\n      this.visit(ast.key, context);\n      this.visit(ast.value, context);\n    }\n  }, {\n    key: \"visitLiteralArray\",\n    value: function visitLiteralArray(ast, context) {\n      this.visitAll(ast.expressions, context);\n    }\n  }, {\n    key: \"visitLiteralMap\",\n    value: function visitLiteralMap(ast, context) {\n      this.visitAll(ast.values, context);\n    }\n  }, {\n    key: \"visitLiteralPrimitive\",\n    value: function visitLiteralPrimitive(ast, context) {}\n  }, {\n    key: \"visitMethodCall\",\n    value: function visitMethodCall(ast, context) {\n      this.visit(ast.receiver, context);\n      this.visitAll(ast.args, context);\n    }\n  }, {\n    key: \"visitPrefixNot\",\n    value: function visitPrefixNot(ast, context) {\n      this.visit(ast.expression, context);\n    }\n  }, {\n    key: \"visitNonNullAssert\",\n    value: function visitNonNullAssert(ast, context) {\n      this.visit(ast.expression, context);\n    }\n  }, {\n    key: \"visitPropertyRead\",\n    value: function visitPropertyRead(ast, context) {\n      this.visit(ast.receiver, context);\n    }\n  }, {\n    key: \"visitPropertyWrite\",\n    value: function visitPropertyWrite(ast, context) {\n      this.visit(ast.receiver, context);\n      this.visit(ast.value, context);\n    }\n  }, {\n    key: \"visitSafePropertyRead\",\n    value: function visitSafePropertyRead(ast, context) {\n      this.visit(ast.receiver, context);\n    }\n  }, {\n    key: \"visitSafeMethodCall\",\n    value: function visitSafeMethodCall(ast, context) {\n      this.visit(ast.receiver, context);\n      this.visitAll(ast.args, context);\n    }\n  }, {\n    key: \"visitQuote\",\n    value: function visitQuote(ast, context) {} // This is not part of the AstVisitor interface, just a helper method\n\n  }, {\n    key: \"visitAll\",\n    value: function visitAll(asts, context) {\n      var _iterator8 = _createForOfIteratorHelper(asts),\n          _step8;\n\n      try {\n        for (_iterator8.s(); !(_step8 = _iterator8.n()).done;) {\n          var ast = _step8.value;\n          this.visit(ast, context);\n        }\n      } catch (err) {\n        _iterator8.e(err);\n      } finally {\n        _iterator8.f();\n      }\n    }\n  }]);\n\n  return RecursiveAstVisitor$1;\n}();\n\nvar AstTransformer$1 = /*#__PURE__*/function () {\n  function AstTransformer$1() {\n    _classCallCheck(this, AstTransformer$1);\n  }\n\n  _createClass(AstTransformer$1, [{\n    key: \"visitImplicitReceiver\",\n    value: function visitImplicitReceiver(ast, context) {\n      return ast;\n    }\n  }, {\n    key: \"visitThisReceiver\",\n    value: function visitThisReceiver(ast, context) {\n      return ast;\n    }\n  }, {\n    key: \"visitInterpolation\",\n    value: function visitInterpolation(ast, context) {\n      return new Interpolation(ast.span, ast.sourceSpan, ast.strings, this.visitAll(ast.expressions));\n    }\n  }, {\n    key: \"visitLiteralPrimitive\",\n    value: function visitLiteralPrimitive(ast, context) {\n      return new LiteralPrimitive(ast.span, ast.sourceSpan, ast.value);\n    }\n  }, {\n    key: \"visitPropertyRead\",\n    value: function visitPropertyRead(ast, context) {\n      return new PropertyRead(ast.span, ast.sourceSpan, ast.nameSpan, ast.receiver.visit(this), ast.name);\n    }\n  }, {\n    key: \"visitPropertyWrite\",\n    value: function visitPropertyWrite(ast, context) {\n      return new PropertyWrite(ast.span, ast.sourceSpan, ast.nameSpan, ast.receiver.visit(this), ast.name, ast.value.visit(this));\n    }\n  }, {\n    key: \"visitSafePropertyRead\",\n    value: function visitSafePropertyRead(ast, context) {\n      return new SafePropertyRead(ast.span, ast.sourceSpan, ast.nameSpan, ast.receiver.visit(this), ast.name);\n    }\n  }, {\n    key: \"visitMethodCall\",\n    value: function visitMethodCall(ast, context) {\n      return new MethodCall(ast.span, ast.sourceSpan, ast.nameSpan, ast.receiver.visit(this), ast.name, this.visitAll(ast.args));\n    }\n  }, {\n    key: \"visitSafeMethodCall\",\n    value: function visitSafeMethodCall(ast, context) {\n      return new SafeMethodCall(ast.span, ast.sourceSpan, ast.nameSpan, ast.receiver.visit(this), ast.name, this.visitAll(ast.args));\n    }\n  }, {\n    key: \"visitFunctionCall\",\n    value: function visitFunctionCall(ast, context) {\n      return new FunctionCall(ast.span, ast.sourceSpan, ast.target.visit(this), this.visitAll(ast.args));\n    }\n  }, {\n    key: \"visitLiteralArray\",\n    value: function visitLiteralArray(ast, context) {\n      return new LiteralArray(ast.span, ast.sourceSpan, this.visitAll(ast.expressions));\n    }\n  }, {\n    key: \"visitLiteralMap\",\n    value: function visitLiteralMap(ast, context) {\n      return new LiteralMap(ast.span, ast.sourceSpan, ast.keys, this.visitAll(ast.values));\n    }\n  }, {\n    key: \"visitUnary\",\n    value: function visitUnary(ast, context) {\n      switch (ast.operator) {\n        case '+':\n          return Unary.createPlus(ast.span, ast.sourceSpan, ast.expr.visit(this));\n\n        case '-':\n          return Unary.createMinus(ast.span, ast.sourceSpan, ast.expr.visit(this));\n\n        default:\n          throw new Error(\"Unknown unary operator \".concat(ast.operator));\n      }\n    }\n  }, {\n    key: \"visitBinary\",\n    value: function visitBinary(ast, context) {\n      return new Binary(ast.span, ast.sourceSpan, ast.operation, ast.left.visit(this), ast.right.visit(this));\n    }\n  }, {\n    key: \"visitPrefixNot\",\n    value: function visitPrefixNot(ast, context) {\n      return new PrefixNot(ast.span, ast.sourceSpan, ast.expression.visit(this));\n    }\n  }, {\n    key: \"visitNonNullAssert\",\n    value: function visitNonNullAssert(ast, context) {\n      return new NonNullAssert(ast.span, ast.sourceSpan, ast.expression.visit(this));\n    }\n  }, {\n    key: \"visitConditional\",\n    value: function visitConditional(ast, context) {\n      return new Conditional(ast.span, ast.sourceSpan, ast.condition.visit(this), ast.trueExp.visit(this), ast.falseExp.visit(this));\n    }\n  }, {\n    key: \"visitPipe\",\n    value: function visitPipe(ast, context) {\n      return new BindingPipe(ast.span, ast.sourceSpan, ast.exp.visit(this), ast.name, this.visitAll(ast.args), ast.nameSpan);\n    }\n  }, {\n    key: \"visitKeyedRead\",\n    value: function visitKeyedRead(ast, context) {\n      return new KeyedRead(ast.span, ast.sourceSpan, ast.obj.visit(this), ast.key.visit(this));\n    }\n  }, {\n    key: \"visitKeyedWrite\",\n    value: function visitKeyedWrite(ast, context) {\n      return new KeyedWrite(ast.span, ast.sourceSpan, ast.obj.visit(this), ast.key.visit(this), ast.value.visit(this));\n    }\n  }, {\n    key: \"visitAll\",\n    value: function visitAll(asts) {\n      var res = [];\n\n      for (var i = 0; i < asts.length; ++i) {\n        res[i] = asts[i].visit(this);\n      }\n\n      return res;\n    }\n  }, {\n    key: \"visitChain\",\n    value: function visitChain(ast, context) {\n      return new Chain(ast.span, ast.sourceSpan, this.visitAll(ast.expressions));\n    }\n  }, {\n    key: \"visitQuote\",\n    value: function visitQuote(ast, context) {\n      return new Quote(ast.span, ast.sourceSpan, ast.prefix, ast.uninterpretedExpression, ast.location);\n    }\n  }]);\n\n  return AstTransformer$1;\n}(); // A transformer that only creates new nodes if the transformer makes a change or\n// a change is made a child node.\n\n\nvar AstMemoryEfficientTransformer = /*#__PURE__*/function () {\n  function AstMemoryEfficientTransformer() {\n    _classCallCheck(this, AstMemoryEfficientTransformer);\n  }\n\n  _createClass(AstMemoryEfficientTransformer, [{\n    key: \"visitImplicitReceiver\",\n    value: function visitImplicitReceiver(ast, context) {\n      return ast;\n    }\n  }, {\n    key: \"visitThisReceiver\",\n    value: function visitThisReceiver(ast, context) {\n      return ast;\n    }\n  }, {\n    key: \"visitInterpolation\",\n    value: function visitInterpolation(ast, context) {\n      var expressions = this.visitAll(ast.expressions);\n      if (expressions !== ast.expressions) return new Interpolation(ast.span, ast.sourceSpan, ast.strings, expressions);\n      return ast;\n    }\n  }, {\n    key: \"visitLiteralPrimitive\",\n    value: function visitLiteralPrimitive(ast, context) {\n      return ast;\n    }\n  }, {\n    key: \"visitPropertyRead\",\n    value: function visitPropertyRead(ast, context) {\n      var receiver = ast.receiver.visit(this);\n\n      if (receiver !== ast.receiver) {\n        return new PropertyRead(ast.span, ast.sourceSpan, ast.nameSpan, receiver, ast.name);\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitPropertyWrite\",\n    value: function visitPropertyWrite(ast, context) {\n      var receiver = ast.receiver.visit(this);\n      var value = ast.value.visit(this);\n\n      if (receiver !== ast.receiver || value !== ast.value) {\n        return new PropertyWrite(ast.span, ast.sourceSpan, ast.nameSpan, receiver, ast.name, value);\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitSafePropertyRead\",\n    value: function visitSafePropertyRead(ast, context) {\n      var receiver = ast.receiver.visit(this);\n\n      if (receiver !== ast.receiver) {\n        return new SafePropertyRead(ast.span, ast.sourceSpan, ast.nameSpan, receiver, ast.name);\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitMethodCall\",\n    value: function visitMethodCall(ast, context) {\n      var receiver = ast.receiver.visit(this);\n      var args = this.visitAll(ast.args);\n\n      if (receiver !== ast.receiver || args !== ast.args) {\n        return new MethodCall(ast.span, ast.sourceSpan, ast.nameSpan, receiver, ast.name, args);\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitSafeMethodCall\",\n    value: function visitSafeMethodCall(ast, context) {\n      var receiver = ast.receiver.visit(this);\n      var args = this.visitAll(ast.args);\n\n      if (receiver !== ast.receiver || args !== ast.args) {\n        return new SafeMethodCall(ast.span, ast.sourceSpan, ast.nameSpan, receiver, ast.name, args);\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitFunctionCall\",\n    value: function visitFunctionCall(ast, context) {\n      var target = ast.target && ast.target.visit(this);\n      var args = this.visitAll(ast.args);\n\n      if (target !== ast.target || args !== ast.args) {\n        return new FunctionCall(ast.span, ast.sourceSpan, target, args);\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitLiteralArray\",\n    value: function visitLiteralArray(ast, context) {\n      var expressions = this.visitAll(ast.expressions);\n\n      if (expressions !== ast.expressions) {\n        return new LiteralArray(ast.span, ast.sourceSpan, expressions);\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitLiteralMap\",\n    value: function visitLiteralMap(ast, context) {\n      var values = this.visitAll(ast.values);\n\n      if (values !== ast.values) {\n        return new LiteralMap(ast.span, ast.sourceSpan, ast.keys, values);\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitUnary\",\n    value: function visitUnary(ast, context) {\n      var expr = ast.expr.visit(this);\n\n      if (expr !== ast.expr) {\n        switch (ast.operator) {\n          case '+':\n            return Unary.createPlus(ast.span, ast.sourceSpan, expr);\n\n          case '-':\n            return Unary.createMinus(ast.span, ast.sourceSpan, expr);\n\n          default:\n            throw new Error(\"Unknown unary operator \".concat(ast.operator));\n        }\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitBinary\",\n    value: function visitBinary(ast, context) {\n      var left = ast.left.visit(this);\n      var right = ast.right.visit(this);\n\n      if (left !== ast.left || right !== ast.right) {\n        return new Binary(ast.span, ast.sourceSpan, ast.operation, left, right);\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitPrefixNot\",\n    value: function visitPrefixNot(ast, context) {\n      var expression = ast.expression.visit(this);\n\n      if (expression !== ast.expression) {\n        return new PrefixNot(ast.span, ast.sourceSpan, expression);\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitNonNullAssert\",\n    value: function visitNonNullAssert(ast, context) {\n      var expression = ast.expression.visit(this);\n\n      if (expression !== ast.expression) {\n        return new NonNullAssert(ast.span, ast.sourceSpan, expression);\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitConditional\",\n    value: function visitConditional(ast, context) {\n      var condition = ast.condition.visit(this);\n      var trueExp = ast.trueExp.visit(this);\n      var falseExp = ast.falseExp.visit(this);\n\n      if (condition !== ast.condition || trueExp !== ast.trueExp || falseExp !== ast.falseExp) {\n        return new Conditional(ast.span, ast.sourceSpan, condition, trueExp, falseExp);\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitPipe\",\n    value: function visitPipe(ast, context) {\n      var exp = ast.exp.visit(this);\n      var args = this.visitAll(ast.args);\n\n      if (exp !== ast.exp || args !== ast.args) {\n        return new BindingPipe(ast.span, ast.sourceSpan, exp, ast.name, args, ast.nameSpan);\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitKeyedRead\",\n    value: function visitKeyedRead(ast, context) {\n      var obj = ast.obj.visit(this);\n      var key = ast.key.visit(this);\n\n      if (obj !== ast.obj || key !== ast.key) {\n        return new KeyedRead(ast.span, ast.sourceSpan, obj, key);\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitKeyedWrite\",\n    value: function visitKeyedWrite(ast, context) {\n      var obj = ast.obj.visit(this);\n      var key = ast.key.visit(this);\n      var value = ast.value.visit(this);\n\n      if (obj !== ast.obj || key !== ast.key || value !== ast.value) {\n        return new KeyedWrite(ast.span, ast.sourceSpan, obj, key, value);\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitAll\",\n    value: function visitAll(asts) {\n      var res = [];\n      var modified = false;\n\n      for (var i = 0; i < asts.length; ++i) {\n        var original = asts[i];\n        var value = original.visit(this);\n        res[i] = value;\n        modified = modified || value !== original;\n      }\n\n      return modified ? res : asts;\n    }\n  }, {\n    key: \"visitChain\",\n    value: function visitChain(ast, context) {\n      var expressions = this.visitAll(ast.expressions);\n\n      if (expressions !== ast.expressions) {\n        return new Chain(ast.span, ast.sourceSpan, expressions);\n      }\n\n      return ast;\n    }\n  }, {\n    key: \"visitQuote\",\n    value: function visitQuote(ast, context) {\n      return ast;\n    }\n  }]);\n\n  return AstMemoryEfficientTransformer;\n}(); // Bindings\n\n\nvar ParsedProperty = /*#__PURE__*/_createClass(function ParsedProperty(name, expression, type, // TODO(atscott): `keySpan` should really be required but allows `undefined` so VE does\n// not need to be updated. Make `keySpan` required when VE is removed.\nsourceSpan, keySpan, valueSpan) {\n  _classCallCheck(this, ParsedProperty);\n\n  this.name = name;\n  this.expression = expression;\n  this.type = type;\n  this.sourceSpan = sourceSpan;\n  this.keySpan = keySpan;\n  this.valueSpan = valueSpan;\n  this.isLiteral = this.type === ParsedPropertyType.LITERAL_ATTR;\n  this.isAnimation = this.type === ParsedPropertyType.ANIMATION;\n});\n\nvar ParsedPropertyType;\n\n(function (ParsedPropertyType) {\n  ParsedPropertyType[ParsedPropertyType[\"DEFAULT\"] = 0] = \"DEFAULT\";\n  ParsedPropertyType[ParsedPropertyType[\"LITERAL_ATTR\"] = 1] = \"LITERAL_ATTR\";\n  ParsedPropertyType[ParsedPropertyType[\"ANIMATION\"] = 2] = \"ANIMATION\";\n})(ParsedPropertyType || (ParsedPropertyType = {}));\n\nvar ParsedEvent = /*#__PURE__*/_createClass( // Regular events have a target\n// Animation events have a phase\nfunction ParsedEvent(name, targetOrPhase, type, handler, sourceSpan, handlerSpan) {\n  _classCallCheck(this, ParsedEvent);\n\n  this.name = name;\n  this.targetOrPhase = targetOrPhase;\n  this.type = type;\n  this.handler = handler;\n  this.sourceSpan = sourceSpan;\n  this.handlerSpan = handlerSpan;\n});\n/**\n * ParsedVariable represents a variable declaration in a microsyntax expression.\n */\n\n\nvar ParsedVariable = /*#__PURE__*/_createClass(function ParsedVariable(name, value, sourceSpan, keySpan, valueSpan) {\n  _classCallCheck(this, ParsedVariable);\n\n  this.name = name;\n  this.value = value;\n  this.sourceSpan = sourceSpan;\n  this.keySpan = keySpan;\n  this.valueSpan = valueSpan;\n});\n\nvar BoundElementProperty = /*#__PURE__*/_createClass(function BoundElementProperty(name, type, securityContext, value, unit, sourceSpan, keySpan, valueSpan) {\n  _classCallCheck(this, BoundElementProperty);\n\n  this.name = name;\n  this.type = type;\n  this.securityContext = securityContext;\n  this.value = value;\n  this.unit = unit;\n  this.sourceSpan = sourceSpan;\n  this.keySpan = keySpan;\n  this.valueSpan = valueSpan;\n});\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar EventHandlerVars = /*#__PURE__*/_createClass(function EventHandlerVars() {\n  _classCallCheck(this, EventHandlerVars);\n});\n\nEventHandlerVars.event = variable('$event');\n\nvar ConvertActionBindingResult = /*#__PURE__*/_createClass(function ConvertActionBindingResult(\n/**\n * Render2 compatible statements,\n */\nstmts,\n/**\n * Variable name used with render2 compatible statements.\n */\nallowDefault) {\n  _classCallCheck(this, ConvertActionBindingResult);\n\n  this.stmts = stmts;\n  this.allowDefault = allowDefault;\n  /**\n   * This is bit of a hack. It converts statements which render2 expects to statements which are\n   * expected by render3.\n   *\n   * Example: `<div click=\"doSomething($event)\">` will generate:\n   *\n   * Render3:\n   * ```\n   * const pd_b:any = ((<any>ctx.doSomething($event)) !== false);\n   * return pd_b;\n   * ```\n   *\n   * but render2 expects:\n   * ```\n   * return ctx.doSomething($event);\n   * ```\n   */\n  // TODO(misko): remove this hack once we no longer support ViewEngine.\n\n  this.render3Stmts = stmts.map(function (statement) {\n    if (statement instanceof DeclareVarStmt && statement.name == allowDefault.name && statement.value instanceof BinaryOperatorExpr) {\n      var lhs = statement.value.lhs;\n      return new ReturnStatement(lhs.value);\n    }\n\n    return statement;\n  });\n});\n/**\n * Converts the given expression AST into an executable output AST, assuming the expression is\n * used in an action binding (e.g. an event handler).\n */\n\n\nfunction convertActionBinding(localResolver, implicitReceiver, action, bindingId, interpolationFunction, baseSourceSpan, implicitReceiverAccesses, globals) {\n  if (!localResolver) {\n    localResolver = new DefaultLocalResolver(globals);\n  }\n\n  var actionWithoutBuiltins = convertPropertyBindingBuiltins({\n    createLiteralArrayConverter: function createLiteralArrayConverter(argCount) {\n      // Note: no caching for literal arrays in actions.\n      return function (args) {\n        return literalArr(args);\n      };\n    },\n    createLiteralMapConverter: function createLiteralMapConverter(keys) {\n      // Note: no caching for literal maps in actions.\n      return function (values) {\n        var entries = keys.map(function (k, i) {\n          return {\n            key: k.key,\n            value: values[i],\n            quoted: k.quoted\n          };\n        });\n        return literalMap(entries);\n      };\n    },\n    createPipeConverter: function createPipeConverter(name) {\n      throw new Error(\"Illegal State: Actions are not allowed to contain pipes. Pipe: \".concat(name));\n    }\n  }, action);\n  var visitor = new _AstToIrVisitor(localResolver, implicitReceiver, bindingId, interpolationFunction, baseSourceSpan, implicitReceiverAccesses);\n  var actionStmts = [];\n  flattenStatements(actionWithoutBuiltins.visit(visitor, _Mode.Statement), actionStmts);\n  prependTemporaryDecls(visitor.temporaryCount, bindingId, actionStmts);\n\n  if (visitor.usesImplicitReceiver) {\n    localResolver.notifyImplicitReceiverUse();\n  }\n\n  var lastIndex = actionStmts.length - 1;\n  var preventDefaultVar = null;\n\n  if (lastIndex >= 0) {\n    var lastStatement = actionStmts[lastIndex];\n    var returnExpr = convertStmtIntoExpression(lastStatement);\n\n    if (returnExpr) {\n      // Note: We need to cast the result of the method call to dynamic,\n      // as it might be a void method!\n      preventDefaultVar = createPreventDefaultVar(bindingId);\n      actionStmts[lastIndex] = preventDefaultVar.set(returnExpr.cast(DYNAMIC_TYPE).notIdentical(literal(false))).toDeclStmt(null, [StmtModifier.Final]);\n    }\n  }\n\n  return new ConvertActionBindingResult(actionStmts, preventDefaultVar);\n}\n\nfunction convertPropertyBindingBuiltins(converterFactory, ast) {\n  return convertBuiltins(converterFactory, ast);\n}\n\nvar ConvertPropertyBindingResult = /*#__PURE__*/_createClass(function ConvertPropertyBindingResult(stmts, currValExpr) {\n  _classCallCheck(this, ConvertPropertyBindingResult);\n\n  this.stmts = stmts;\n  this.currValExpr = currValExpr;\n});\n\nvar BindingForm;\n\n(function (BindingForm) {\n  // The general form of binding expression, supports all expressions.\n  BindingForm[BindingForm[\"General\"] = 0] = \"General\"; // Try to generate a simple binding (no temporaries or statements)\n  // otherwise generate a general binding\n\n  BindingForm[BindingForm[\"TrySimple\"] = 1] = \"TrySimple\"; // Inlines assignment of temporaries into the generated expression. The result may still\n  // have statements attached for declarations of temporary variables.\n  // This is the only relevant form for Ivy, the other forms are only used in ViewEngine.\n\n  BindingForm[BindingForm[\"Expression\"] = 2] = \"Expression\";\n})(BindingForm || (BindingForm = {}));\n/**\n * Converts the given expression AST into an executable output AST, assuming the expression\n * is used in property binding. The expression has to be preprocessed via\n * `convertPropertyBindingBuiltins`.\n */\n\n\nfunction _convertPropertyBinding(localResolver, implicitReceiver, expressionWithoutBuiltins, bindingId, form, interpolationFunction) {\n  if (!localResolver) {\n    localResolver = new DefaultLocalResolver();\n  }\n\n  var visitor = new _AstToIrVisitor(localResolver, implicitReceiver, bindingId, interpolationFunction);\n  var outputExpr = expressionWithoutBuiltins.visit(visitor, _Mode.Expression);\n  var stmts = getStatementsFromVisitor(visitor, bindingId);\n\n  if (visitor.usesImplicitReceiver) {\n    localResolver.notifyImplicitReceiverUse();\n  }\n\n  if (visitor.temporaryCount === 0 && form == BindingForm.TrySimple) {\n    return new ConvertPropertyBindingResult([], outputExpr);\n  } else if (form === BindingForm.Expression) {\n    return new ConvertPropertyBindingResult(stmts, outputExpr);\n  }\n\n  var currValExpr = createCurrValueExpr(bindingId);\n  stmts.push(currValExpr.set(outputExpr).toDeclStmt(DYNAMIC_TYPE, [StmtModifier.Final]));\n  return new ConvertPropertyBindingResult(stmts, currValExpr);\n}\n/**\n * Given some expression, such as a binding or interpolation expression, and a context expression to\n * look values up on, visit each facet of the given expression resolving values from the context\n * expression such that a list of arguments can be derived from the found values that can be used as\n * arguments to an external update instruction.\n *\n * @param localResolver The resolver to use to look up expressions by name appropriately\n * @param contextVariableExpression The expression representing the context variable used to create\n * the final argument expressions\n * @param expressionWithArgumentsToExtract The expression to visit to figure out what values need to\n * be resolved and what arguments list to build.\n * @param bindingId A name prefix used to create temporary variable names if they're needed for the\n * arguments generated\n * @returns An array of expressions that can be passed as arguments to instruction expressions like\n * `o.importExpr(R3.propertyInterpolate).callFn(result)`\n */\n\n\nfunction convertUpdateArguments(localResolver, contextVariableExpression, expressionWithArgumentsToExtract, bindingId) {\n  var visitor = new _AstToIrVisitor(localResolver, contextVariableExpression, bindingId, undefined);\n  var outputExpr = expressionWithArgumentsToExtract.visit(visitor, _Mode.Expression);\n\n  if (visitor.usesImplicitReceiver) {\n    localResolver.notifyImplicitReceiverUse();\n  }\n\n  var stmts = getStatementsFromVisitor(visitor, bindingId); // Removing the first argument, because it was a length for ViewEngine, not Ivy.\n\n  var args = outputExpr.args.slice(1);\n\n  if (expressionWithArgumentsToExtract instanceof Interpolation) {\n    // If we're dealing with an interpolation of 1 value with an empty prefix and suffix, reduce the\n    // args returned to just the value, because we're going to pass it to a special instruction.\n    var strings = expressionWithArgumentsToExtract.strings;\n\n    if (args.length === 3 && strings[0] === '' && strings[1] === '') {\n      // Single argument interpolate instructions.\n      args = [args[1]];\n    } else if (args.length >= 19) {\n      // 19 or more arguments must be passed to the `interpolateV`-style instructions, which accept\n      // an array of arguments\n      args = [literalArr(args)];\n    }\n  }\n\n  return {\n    stmts: stmts,\n    args: args\n  };\n}\n\nfunction getStatementsFromVisitor(visitor, bindingId) {\n  var stmts = [];\n\n  for (var i = 0; i < visitor.temporaryCount; i++) {\n    stmts.push(temporaryDeclaration(bindingId, i));\n  }\n\n  return stmts;\n}\n\nfunction convertBuiltins(converterFactory, ast) {\n  var visitor = new _BuiltinAstConverter(converterFactory);\n  return ast.visit(visitor);\n}\n\nfunction temporaryName(bindingId, temporaryNumber) {\n  return \"tmp_\".concat(bindingId, \"_\").concat(temporaryNumber);\n}\n\nfunction temporaryDeclaration(bindingId, temporaryNumber) {\n  return new DeclareVarStmt(temporaryName(bindingId, temporaryNumber), NULL_EXPR);\n}\n\nfunction prependTemporaryDecls(temporaryCount, bindingId, statements) {\n  for (var i = temporaryCount - 1; i >= 0; i--) {\n    statements.unshift(temporaryDeclaration(bindingId, i));\n  }\n}\n\nvar _Mode;\n\n(function (_Mode) {\n  _Mode[_Mode[\"Statement\"] = 0] = \"Statement\";\n  _Mode[_Mode[\"Expression\"] = 1] = \"Expression\";\n})(_Mode || (_Mode = {}));\n\nfunction ensureStatementMode(mode, ast) {\n  if (mode !== _Mode.Statement) {\n    throw new Error(\"Expected a statement, but saw \".concat(ast));\n  }\n}\n\nfunction ensureExpressionMode(mode, ast) {\n  if (mode !== _Mode.Expression) {\n    throw new Error(\"Expected an expression, but saw \".concat(ast));\n  }\n}\n\nfunction convertToStatementIfNeeded(mode, expr) {\n  if (mode === _Mode.Statement) {\n    return expr.toStmt();\n  } else {\n    return expr;\n  }\n}\n\nvar _BuiltinAstConverter = /*#__PURE__*/function (_AstTransformer$) {\n  _inherits(_BuiltinAstConverter, _AstTransformer$);\n\n  var _super78 = _createSuper(_BuiltinAstConverter);\n\n  function _BuiltinAstConverter(_converterFactory) {\n    var _this108;\n\n    _classCallCheck(this, _BuiltinAstConverter);\n\n    _this108 = _super78.call(this);\n    _this108._converterFactory = _converterFactory;\n    return _this108;\n  }\n\n  _createClass(_BuiltinAstConverter, [{\n    key: \"visitPipe\",\n    value: function visitPipe(ast, context) {\n      var _this109 = this;\n\n      var args = [ast.exp].concat(_toConsumableArray(ast.args)).map(function (ast) {\n        return ast.visit(_this109, context);\n      });\n      return new BuiltinFunctionCall(ast.span, ast.sourceSpan, args, this._converterFactory.createPipeConverter(ast.name, args.length));\n    }\n  }, {\n    key: \"visitLiteralArray\",\n    value: function visitLiteralArray(ast, context) {\n      var _this110 = this;\n\n      var args = ast.expressions.map(function (ast) {\n        return ast.visit(_this110, context);\n      });\n      return new BuiltinFunctionCall(ast.span, ast.sourceSpan, args, this._converterFactory.createLiteralArrayConverter(ast.expressions.length));\n    }\n  }, {\n    key: \"visitLiteralMap\",\n    value: function visitLiteralMap(ast, context) {\n      var _this111 = this;\n\n      var args = ast.values.map(function (ast) {\n        return ast.visit(_this111, context);\n      });\n      return new BuiltinFunctionCall(ast.span, ast.sourceSpan, args, this._converterFactory.createLiteralMapConverter(ast.keys));\n    }\n  }]);\n\n  return _BuiltinAstConverter;\n}(AstTransformer$1);\n\nvar _AstToIrVisitor = /*#__PURE__*/function () {\n  function _AstToIrVisitor(_localResolver, _implicitReceiver, bindingId, interpolationFunction, baseSourceSpan, implicitReceiverAccesses) {\n    _classCallCheck(this, _AstToIrVisitor);\n\n    this._localResolver = _localResolver;\n    this._implicitReceiver = _implicitReceiver;\n    this.bindingId = bindingId;\n    this.interpolationFunction = interpolationFunction;\n    this.baseSourceSpan = baseSourceSpan;\n    this.implicitReceiverAccesses = implicitReceiverAccesses;\n    this._nodeMap = new Map();\n    this._resultMap = new Map();\n    this._currentTemporary = 0;\n    this.temporaryCount = 0;\n    this.usesImplicitReceiver = false;\n  }\n\n  _createClass(_AstToIrVisitor, [{\n    key: \"visitUnary\",\n    value: function visitUnary(ast, mode) {\n      var op;\n\n      switch (ast.operator) {\n        case '+':\n          op = UnaryOperator.Plus;\n          break;\n\n        case '-':\n          op = UnaryOperator.Minus;\n          break;\n\n        default:\n          throw new Error(\"Unsupported operator \".concat(ast.operator));\n      }\n\n      return convertToStatementIfNeeded(mode, new UnaryOperatorExpr(op, this._visit(ast.expr, _Mode.Expression), undefined, this.convertSourceSpan(ast.span)));\n    }\n  }, {\n    key: \"visitBinary\",\n    value: function visitBinary(ast, mode) {\n      var op;\n\n      switch (ast.operation) {\n        case '+':\n          op = BinaryOperator.Plus;\n          break;\n\n        case '-':\n          op = BinaryOperator.Minus;\n          break;\n\n        case '*':\n          op = BinaryOperator.Multiply;\n          break;\n\n        case '/':\n          op = BinaryOperator.Divide;\n          break;\n\n        case '%':\n          op = BinaryOperator.Modulo;\n          break;\n\n        case '&&':\n          op = BinaryOperator.And;\n          break;\n\n        case '||':\n          op = BinaryOperator.Or;\n          break;\n\n        case '==':\n          op = BinaryOperator.Equals;\n          break;\n\n        case '!=':\n          op = BinaryOperator.NotEquals;\n          break;\n\n        case '===':\n          op = BinaryOperator.Identical;\n          break;\n\n        case '!==':\n          op = BinaryOperator.NotIdentical;\n          break;\n\n        case '<':\n          op = BinaryOperator.Lower;\n          break;\n\n        case '>':\n          op = BinaryOperator.Bigger;\n          break;\n\n        case '<=':\n          op = BinaryOperator.LowerEquals;\n          break;\n\n        case '>=':\n          op = BinaryOperator.BiggerEquals;\n          break;\n\n        default:\n          throw new Error(\"Unsupported operation \".concat(ast.operation));\n      }\n\n      return convertToStatementIfNeeded(mode, new BinaryOperatorExpr(op, this._visit(ast.left, _Mode.Expression), this._visit(ast.right, _Mode.Expression), undefined, this.convertSourceSpan(ast.span)));\n    }\n  }, {\n    key: \"visitChain\",\n    value: function visitChain(ast, mode) {\n      ensureStatementMode(mode, ast);\n      return this.visitAll(ast.expressions, mode);\n    }\n  }, {\n    key: \"visitConditional\",\n    value: function visitConditional(ast, mode) {\n      var value = this._visit(ast.condition, _Mode.Expression);\n\n      return convertToStatementIfNeeded(mode, value.conditional(this._visit(ast.trueExp, _Mode.Expression), this._visit(ast.falseExp, _Mode.Expression), this.convertSourceSpan(ast.span)));\n    }\n  }, {\n    key: \"visitPipe\",\n    value: function visitPipe(ast, mode) {\n      throw new Error(\"Illegal state: Pipes should have been converted into functions. Pipe: \".concat(ast.name));\n    }\n  }, {\n    key: \"visitFunctionCall\",\n    value: function visitFunctionCall(ast, mode) {\n      var convertedArgs = this.visitAll(ast.args, _Mode.Expression);\n      var fnResult;\n\n      if (ast instanceof BuiltinFunctionCall) {\n        fnResult = ast.converter(convertedArgs);\n      } else {\n        fnResult = this._visit(ast.target, _Mode.Expression).callFn(convertedArgs, this.convertSourceSpan(ast.span));\n      }\n\n      return convertToStatementIfNeeded(mode, fnResult);\n    }\n  }, {\n    key: \"visitImplicitReceiver\",\n    value: function visitImplicitReceiver(ast, mode) {\n      ensureExpressionMode(mode, ast);\n      this.usesImplicitReceiver = true;\n      return this._implicitReceiver;\n    }\n  }, {\n    key: \"visitThisReceiver\",\n    value: function visitThisReceiver(ast, mode) {\n      return this.visitImplicitReceiver(ast, mode);\n    }\n  }, {\n    key: \"visitInterpolation\",\n    value: function visitInterpolation(ast, mode) {\n      ensureExpressionMode(mode, ast);\n      var args = [literal(ast.expressions.length)];\n\n      for (var i = 0; i < ast.strings.length - 1; i++) {\n        args.push(literal(ast.strings[i]));\n        args.push(this._visit(ast.expressions[i], _Mode.Expression));\n      }\n\n      args.push(literal(ast.strings[ast.strings.length - 1]));\n\n      if (this.interpolationFunction) {\n        return this.interpolationFunction(args);\n      }\n\n      return ast.expressions.length <= 9 ? importExpr(Identifiers.inlineInterpolate).callFn(args) : importExpr(Identifiers.interpolate).callFn([args[0], literalArr(args.slice(1), undefined, this.convertSourceSpan(ast.span))]);\n    }\n  }, {\n    key: \"visitKeyedRead\",\n    value: function visitKeyedRead(ast, mode) {\n      var leftMostSafe = this.leftMostSafeNode(ast);\n\n      if (leftMostSafe) {\n        return this.convertSafeAccess(ast, leftMostSafe, mode);\n      } else {\n        return convertToStatementIfNeeded(mode, this._visit(ast.obj, _Mode.Expression).key(this._visit(ast.key, _Mode.Expression)));\n      }\n    }\n  }, {\n    key: \"visitKeyedWrite\",\n    value: function visitKeyedWrite(ast, mode) {\n      var obj = this._visit(ast.obj, _Mode.Expression);\n\n      var key = this._visit(ast.key, _Mode.Expression);\n\n      var value = this._visit(ast.value, _Mode.Expression);\n\n      return convertToStatementIfNeeded(mode, obj.key(key).set(value));\n    }\n  }, {\n    key: \"visitLiteralArray\",\n    value: function visitLiteralArray(ast, mode) {\n      throw new Error(\"Illegal State: literal arrays should have been converted into functions\");\n    }\n  }, {\n    key: \"visitLiteralMap\",\n    value: function visitLiteralMap(ast, mode) {\n      throw new Error(\"Illegal State: literal maps should have been converted into functions\");\n    }\n  }, {\n    key: \"visitLiteralPrimitive\",\n    value: function visitLiteralPrimitive(ast, mode) {\n      // For literal values of null, undefined, true, or false allow type interference\n      // to infer the type.\n      var type = ast.value === null || ast.value === undefined || ast.value === true || ast.value === true ? INFERRED_TYPE : undefined;\n      return convertToStatementIfNeeded(mode, literal(ast.value, type, this.convertSourceSpan(ast.span)));\n    }\n  }, {\n    key: \"_getLocal\",\n    value: function _getLocal(name, receiver) {\n      var _a;\n\n      if (((_a = this._localResolver.globals) === null || _a === void 0 ? void 0 : _a.has(name)) && receiver instanceof ThisReceiver) {\n        return null;\n      }\n\n      return this._localResolver.getLocal(name);\n    }\n  }, {\n    key: \"visitMethodCall\",\n    value: function visitMethodCall(ast, mode) {\n      if (ast.receiver instanceof ImplicitReceiver && !(ast.receiver instanceof ThisReceiver) && ast.name === '$any') {\n        var args = this.visitAll(ast.args, _Mode.Expression);\n\n        if (args.length != 1) {\n          throw new Error(\"Invalid call to $any, expected 1 argument but received \".concat(args.length || 'none'));\n        }\n\n        return args[0].cast(DYNAMIC_TYPE, this.convertSourceSpan(ast.span));\n      }\n\n      var leftMostSafe = this.leftMostSafeNode(ast);\n\n      if (leftMostSafe) {\n        return this.convertSafeAccess(ast, leftMostSafe, mode);\n      } else {\n        var _args = this.visitAll(ast.args, _Mode.Expression);\n\n        var prevUsesImplicitReceiver = this.usesImplicitReceiver;\n        var result = null;\n\n        var receiver = this._visit(ast.receiver, _Mode.Expression);\n\n        if (receiver === this._implicitReceiver) {\n          var varExpr = this._getLocal(ast.name, ast.receiver);\n\n          if (varExpr) {\n            // Restore the previous \"usesImplicitReceiver\" state since the implicit\n            // receiver has been replaced with a resolved local expression.\n            this.usesImplicitReceiver = prevUsesImplicitReceiver;\n            result = varExpr.callFn(_args);\n            this.addImplicitReceiverAccess(ast.name);\n          }\n        }\n\n        if (result == null) {\n          result = receiver.callMethod(ast.name, _args, this.convertSourceSpan(ast.span));\n        }\n\n        return convertToStatementIfNeeded(mode, result);\n      }\n    }\n  }, {\n    key: \"visitPrefixNot\",\n    value: function visitPrefixNot(ast, mode) {\n      return convertToStatementIfNeeded(mode, not(this._visit(ast.expression, _Mode.Expression)));\n    }\n  }, {\n    key: \"visitNonNullAssert\",\n    value: function visitNonNullAssert(ast, mode) {\n      return convertToStatementIfNeeded(mode, assertNotNull(this._visit(ast.expression, _Mode.Expression)));\n    }\n  }, {\n    key: \"visitPropertyRead\",\n    value: function visitPropertyRead(ast, mode) {\n      var leftMostSafe = this.leftMostSafeNode(ast);\n\n      if (leftMostSafe) {\n        return this.convertSafeAccess(ast, leftMostSafe, mode);\n      } else {\n        var result = null;\n        var prevUsesImplicitReceiver = this.usesImplicitReceiver;\n\n        var receiver = this._visit(ast.receiver, _Mode.Expression);\n\n        if (receiver === this._implicitReceiver) {\n          result = this._getLocal(ast.name, ast.receiver);\n\n          if (result) {\n            // Restore the previous \"usesImplicitReceiver\" state since the implicit\n            // receiver has been replaced with a resolved local expression.\n            this.usesImplicitReceiver = prevUsesImplicitReceiver;\n            this.addImplicitReceiverAccess(ast.name);\n          }\n        }\n\n        if (result == null) {\n          result = receiver.prop(ast.name);\n        }\n\n        return convertToStatementIfNeeded(mode, result);\n      }\n    }\n  }, {\n    key: \"visitPropertyWrite\",\n    value: function visitPropertyWrite(ast, mode) {\n      var receiver = this._visit(ast.receiver, _Mode.Expression);\n\n      var prevUsesImplicitReceiver = this.usesImplicitReceiver;\n      var varExpr = null;\n\n      if (receiver === this._implicitReceiver) {\n        var localExpr = this._getLocal(ast.name, ast.receiver);\n\n        if (localExpr) {\n          if (localExpr instanceof ReadPropExpr) {\n            // If the local variable is a property read expression, it's a reference\n            // to a 'context.property' value and will be used as the target of the\n            // write expression.\n            varExpr = localExpr; // Restore the previous \"usesImplicitReceiver\" state since the implicit\n            // receiver has been replaced with a resolved local expression.\n\n            this.usesImplicitReceiver = prevUsesImplicitReceiver;\n            this.addImplicitReceiverAccess(ast.name);\n          } else {\n            // Otherwise it's an error.\n            var _receiver = ast.name;\n            var value = ast.value instanceof PropertyRead ? ast.value.name : undefined;\n            throw new Error(\"Cannot assign value \\\"\".concat(value, \"\\\" to template variable \\\"\").concat(_receiver, \"\\\". Template variables are read-only.\"));\n          }\n        }\n      } // If no local expression could be produced, use the original receiver's\n      // property as the target.\n\n\n      if (varExpr === null) {\n        varExpr = receiver.prop(ast.name);\n      }\n\n      return convertToStatementIfNeeded(mode, varExpr.set(this._visit(ast.value, _Mode.Expression)));\n    }\n  }, {\n    key: \"visitSafePropertyRead\",\n    value: function visitSafePropertyRead(ast, mode) {\n      return this.convertSafeAccess(ast, this.leftMostSafeNode(ast), mode);\n    }\n  }, {\n    key: \"visitSafeMethodCall\",\n    value: function visitSafeMethodCall(ast, mode) {\n      return this.convertSafeAccess(ast, this.leftMostSafeNode(ast), mode);\n    }\n  }, {\n    key: \"visitAll\",\n    value: function visitAll(asts, mode) {\n      var _this112 = this;\n\n      return asts.map(function (ast) {\n        return _this112._visit(ast, mode);\n      });\n    }\n  }, {\n    key: \"visitQuote\",\n    value: function visitQuote(ast, mode) {\n      throw new Error(\"Quotes are not supported for evaluation!\\n        Statement: \".concat(ast.uninterpretedExpression, \" located at \").concat(ast.location));\n    }\n  }, {\n    key: \"_visit\",\n    value: function _visit(ast, mode) {\n      var result = this._resultMap.get(ast);\n\n      if (result) return result;\n      return (this._nodeMap.get(ast) || ast).visit(this, mode);\n    }\n  }, {\n    key: \"convertSafeAccess\",\n    value: function convertSafeAccess(ast, leftMostSafe, mode) {\n      // If the expression contains a safe access node on the left it needs to be converted to\n      // an expression that guards the access to the member by checking the receiver for blank. As\n      // execution proceeds from left to right, the left most part of the expression must be guarded\n      // first but, because member access is left associative, the right side of the expression is at\n      // the top of the AST. The desired result requires lifting a copy of the left part of the\n      // expression up to test it for blank before generating the unguarded version.\n      // Consider, for example the following expression: a?.b.c?.d.e\n      // This results in the ast:\n      //         .\n      //        / \\\n      //       ?.   e\n      //      /  \\\n      //     .    d\n      //    / \\\n      //   ?.  c\n      //  /  \\\n      // a    b\n      // The following tree should be generated:\n      //\n      //        /---- ? ----\\\n      //       /      |      \\\n      //     a   /--- ? ---\\  null\n      //        /     |     \\\n      //       .      .     null\n      //      / \\    / \\\n      //     .  c   .   e\n      //    / \\    / \\\n      //   a   b  .   d\n      //         / \\\n      //        .   c\n      //       / \\\n      //      a   b\n      //\n      // Notice that the first guard condition is the left hand of the left most safe access node\n      // which comes in as leftMostSafe to this routine.\n      var guardedExpression = this._visit(leftMostSafe.receiver, _Mode.Expression);\n\n      var temporary = undefined;\n\n      if (this.needsTemporary(leftMostSafe.receiver)) {\n        // If the expression has method calls or pipes then we need to save the result into a\n        // temporary variable to avoid calling stateful or impure code more than once.\n        temporary = this.allocateTemporary(); // Preserve the result in the temporary variable\n\n        guardedExpression = temporary.set(guardedExpression); // Ensure all further references to the guarded expression refer to the temporary instead.\n\n        this._resultMap.set(leftMostSafe.receiver, temporary);\n      }\n\n      var condition = guardedExpression.isBlank(); // Convert the ast to an unguarded access to the receiver's member. The map will substitute\n      // leftMostNode with its unguarded version in the call to `this.visit()`.\n\n      if (leftMostSafe instanceof SafeMethodCall) {\n        this._nodeMap.set(leftMostSafe, new MethodCall(leftMostSafe.span, leftMostSafe.sourceSpan, leftMostSafe.nameSpan, leftMostSafe.receiver, leftMostSafe.name, leftMostSafe.args));\n      } else {\n        this._nodeMap.set(leftMostSafe, new PropertyRead(leftMostSafe.span, leftMostSafe.sourceSpan, leftMostSafe.nameSpan, leftMostSafe.receiver, leftMostSafe.name));\n      } // Recursively convert the node now without the guarded member access.\n\n\n      var access = this._visit(ast, _Mode.Expression); // Remove the mapping. This is not strictly required as the converter only traverses each node\n      // once but is safer if the conversion is changed to traverse the nodes more than once.\n\n\n      this._nodeMap.delete(leftMostSafe); // If we allocated a temporary, release it.\n\n\n      if (temporary) {\n        this.releaseTemporary(temporary);\n      } // Produce the conditional\n\n\n      return convertToStatementIfNeeded(mode, condition.conditional(literal(null), access));\n    } // Given an expression of the form a?.b.c?.d.e then the left most safe node is\n    // the (a?.b). The . and ?. are left associative thus can be rewritten as:\n    // ((((a?.c).b).c)?.d).e. This returns the most deeply nested safe read or\n    // safe method call as this needs to be transformed initially to:\n    //   a == null ? null : a.c.b.c?.d.e\n    // then to:\n    //   a == null ? null : a.b.c == null ? null : a.b.c.d.e\n\n  }, {\n    key: \"leftMostSafeNode\",\n    value: function leftMostSafeNode(ast) {\n      var _this113 = this;\n\n      var visit = function visit(visitor, ast) {\n        return (_this113._nodeMap.get(ast) || ast).visit(visitor);\n      };\n\n      return ast.visit({\n        visitUnary: function visitUnary(ast) {\n          return null;\n        },\n        visitBinary: function visitBinary(ast) {\n          return null;\n        },\n        visitChain: function visitChain(ast) {\n          return null;\n        },\n        visitConditional: function visitConditional(ast) {\n          return null;\n        },\n        visitFunctionCall: function visitFunctionCall(ast) {\n          return null;\n        },\n        visitImplicitReceiver: function visitImplicitReceiver(ast) {\n          return null;\n        },\n        visitThisReceiver: function visitThisReceiver(ast) {\n          return null;\n        },\n        visitInterpolation: function visitInterpolation(ast) {\n          return null;\n        },\n        visitKeyedRead: function visitKeyedRead(ast) {\n          return visit(this, ast.obj);\n        },\n        visitKeyedWrite: function visitKeyedWrite(ast) {\n          return null;\n        },\n        visitLiteralArray: function visitLiteralArray(ast) {\n          return null;\n        },\n        visitLiteralMap: function visitLiteralMap(ast) {\n          return null;\n        },\n        visitLiteralPrimitive: function visitLiteralPrimitive(ast) {\n          return null;\n        },\n        visitMethodCall: function visitMethodCall(ast) {\n          return visit(this, ast.receiver);\n        },\n        visitPipe: function visitPipe(ast) {\n          return null;\n        },\n        visitPrefixNot: function visitPrefixNot(ast) {\n          return null;\n        },\n        visitNonNullAssert: function visitNonNullAssert(ast) {\n          return null;\n        },\n        visitPropertyRead: function visitPropertyRead(ast) {\n          return visit(this, ast.receiver);\n        },\n        visitPropertyWrite: function visitPropertyWrite(ast) {\n          return null;\n        },\n        visitQuote: function visitQuote(ast) {\n          return null;\n        },\n        visitSafeMethodCall: function visitSafeMethodCall(ast) {\n          return visit(this, ast.receiver) || ast;\n        },\n        visitSafePropertyRead: function visitSafePropertyRead(ast) {\n          return visit(this, ast.receiver) || ast;\n        }\n      });\n    } // Returns true of the AST includes a method or a pipe indicating that, if the\n    // expression is used as the target of a safe property or method access then\n    // the expression should be stored into a temporary variable.\n\n  }, {\n    key: \"needsTemporary\",\n    value: function needsTemporary(ast) {\n      var _this114 = this;\n\n      var visit = function visit(visitor, ast) {\n        return ast && (_this114._nodeMap.get(ast) || ast).visit(visitor);\n      };\n\n      var visitSome = function visitSome(visitor, ast) {\n        return ast.some(function (ast) {\n          return visit(visitor, ast);\n        });\n      };\n\n      return ast.visit({\n        visitUnary: function visitUnary(ast) {\n          return visit(this, ast.expr);\n        },\n        visitBinary: function visitBinary(ast) {\n          return visit(this, ast.left) || visit(this, ast.right);\n        },\n        visitChain: function visitChain(ast) {\n          return false;\n        },\n        visitConditional: function visitConditional(ast) {\n          return visit(this, ast.condition) || visit(this, ast.trueExp) || visit(this, ast.falseExp);\n        },\n        visitFunctionCall: function visitFunctionCall(ast) {\n          return true;\n        },\n        visitImplicitReceiver: function visitImplicitReceiver(ast) {\n          return false;\n        },\n        visitThisReceiver: function visitThisReceiver(ast) {\n          return false;\n        },\n        visitInterpolation: function visitInterpolation(ast) {\n          return visitSome(this, ast.expressions);\n        },\n        visitKeyedRead: function visitKeyedRead(ast) {\n          return false;\n        },\n        visitKeyedWrite: function visitKeyedWrite(ast) {\n          return false;\n        },\n        visitLiteralArray: function visitLiteralArray(ast) {\n          return true;\n        },\n        visitLiteralMap: function visitLiteralMap(ast) {\n          return true;\n        },\n        visitLiteralPrimitive: function visitLiteralPrimitive(ast) {\n          return false;\n        },\n        visitMethodCall: function visitMethodCall(ast) {\n          return true;\n        },\n        visitPipe: function visitPipe(ast) {\n          return true;\n        },\n        visitPrefixNot: function visitPrefixNot(ast) {\n          return visit(this, ast.expression);\n        },\n        visitNonNullAssert: function visitNonNullAssert(ast) {\n          return visit(this, ast.expression);\n        },\n        visitPropertyRead: function visitPropertyRead(ast) {\n          return false;\n        },\n        visitPropertyWrite: function visitPropertyWrite(ast) {\n          return false;\n        },\n        visitQuote: function visitQuote(ast) {\n          return false;\n        },\n        visitSafeMethodCall: function visitSafeMethodCall(ast) {\n          return true;\n        },\n        visitSafePropertyRead: function visitSafePropertyRead(ast) {\n          return false;\n        }\n      });\n    }\n  }, {\n    key: \"allocateTemporary\",\n    value: function allocateTemporary() {\n      var tempNumber = this._currentTemporary++;\n      this.temporaryCount = Math.max(this._currentTemporary, this.temporaryCount);\n      return new ReadVarExpr(temporaryName(this.bindingId, tempNumber));\n    }\n  }, {\n    key: \"releaseTemporary\",\n    value: function releaseTemporary(temporary) {\n      this._currentTemporary--;\n\n      if (temporary.name != temporaryName(this.bindingId, this._currentTemporary)) {\n        throw new Error(\"Temporary \".concat(temporary.name, \" released out of order\"));\n      }\n    }\n    /**\n     * Creates an absolute `ParseSourceSpan` from the relative `ParseSpan`.\n     *\n     * `ParseSpan` objects are relative to the start of the expression.\n     * This method converts these to full `ParseSourceSpan` objects that\n     * show where the span is within the overall source file.\n     *\n     * @param span the relative span to convert.\n     * @returns a `ParseSourceSpan` for the given span or null if no\n     * `baseSourceSpan` was provided to this class.\n     */\n\n  }, {\n    key: \"convertSourceSpan\",\n    value: function convertSourceSpan(span) {\n      if (this.baseSourceSpan) {\n        var _start = this.baseSourceSpan.start.moveBy(span.start);\n\n        var end = this.baseSourceSpan.start.moveBy(span.end);\n        var fullStart = this.baseSourceSpan.fullStart.moveBy(span.start);\n        return new ParseSourceSpan(_start, end, fullStart);\n      } else {\n        return null;\n      }\n    }\n    /** Adds the name of an AST to the list of implicit receiver accesses. */\n\n  }, {\n    key: \"addImplicitReceiverAccess\",\n    value: function addImplicitReceiverAccess(name) {\n      if (this.implicitReceiverAccesses) {\n        this.implicitReceiverAccesses.add(name);\n      }\n    }\n  }]);\n\n  return _AstToIrVisitor;\n}();\n\nfunction flattenStatements(arg, output) {\n  if (Array.isArray(arg)) {\n    arg.forEach(function (entry) {\n      return flattenStatements(entry, output);\n    });\n  } else {\n    output.push(arg);\n  }\n}\n\nvar DefaultLocalResolver = /*#__PURE__*/function () {\n  function DefaultLocalResolver(globals) {\n    _classCallCheck(this, DefaultLocalResolver);\n\n    this.globals = globals;\n  }\n\n  _createClass(DefaultLocalResolver, [{\n    key: \"notifyImplicitReceiverUse\",\n    value: function notifyImplicitReceiverUse() {}\n  }, {\n    key: \"getLocal\",\n    value: function getLocal(name) {\n      if (name === EventHandlerVars.event.name) {\n        return EventHandlerVars.event;\n      }\n\n      return null;\n    }\n  }]);\n\n  return DefaultLocalResolver;\n}();\n\nfunction createCurrValueExpr(bindingId) {\n  return variable(\"currVal_\".concat(bindingId)); // fix syntax highlighting: `\n}\n\nfunction createPreventDefaultVar(bindingId) {\n  return variable(\"pd_\".concat(bindingId));\n}\n\nfunction convertStmtIntoExpression(stmt) {\n  if (stmt instanceof ExpressionStatement) {\n    return stmt.expr;\n  } else if (stmt instanceof ReturnStatement) {\n    return stmt.value;\n  }\n\n  return null;\n}\n\nvar BuiltinFunctionCall = /*#__PURE__*/function (_FunctionCall) {\n  _inherits(BuiltinFunctionCall, _FunctionCall);\n\n  var _super79 = _createSuper(BuiltinFunctionCall);\n\n  function BuiltinFunctionCall(span, sourceSpan, args, converter) {\n    var _this115;\n\n    _classCallCheck(this, BuiltinFunctionCall);\n\n    _this115 = _super79.call(this, span, sourceSpan, null, args);\n    _this115.args = args;\n    _this115.converter = converter;\n    return _this115;\n  }\n\n  return _createClass(BuiltinFunctionCall);\n}(FunctionCall);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * This file is a port of shadowCSS from webcomponents.js to TypeScript.\n *\n * Please make sure to keep to edits in sync with the source file.\n *\n * Source:\n * https://github.com/webcomponents/webcomponentsjs/blob/4efecd7e0e/src/ShadowCSS/ShadowCSS.js\n *\n * The original file level comment is reproduced below\n */\n\n/*\n  This is a limited shim for ShadowDOM css styling.\n  https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#styles\n\n  The intention here is to support only the styling features which can be\n  relatively simply implemented. The goal is to allow users to avoid the\n  most obvious pitfalls and do so without compromising performance significantly.\n  For ShadowDOM styling that's not covered here, a set of best practices\n  can be provided that should allow users to accomplish more complex styling.\n\n  The following is a list of specific ShadowDOM styling features and a brief\n  discussion of the approach used to shim.\n\n  Shimmed features:\n\n  * :host, :host-context: ShadowDOM allows styling of the shadowRoot's host\n  element using the :host rule. To shim this feature, the :host styles are\n  reformatted and prefixed with a given scope name and promoted to a\n  document level stylesheet.\n  For example, given a scope name of .foo, a rule like this:\n\n    :host {\n        background: red;\n      }\n    }\n\n  becomes:\n\n    .foo {\n      background: red;\n    }\n\n  * encapsulation: Styles defined within ShadowDOM, apply only to\n  dom inside the ShadowDOM. Polymer uses one of two techniques to implement\n  this feature.\n\n  By default, rules are prefixed with the host element tag name\n  as a descendant selector. This ensures styling does not leak out of the 'top'\n  of the element's ShadowDOM. For example,\n\n  div {\n      font-weight: bold;\n    }\n\n  becomes:\n\n  x-foo div {\n      font-weight: bold;\n    }\n\n  becomes:\n\n\n  Alternatively, if WebComponents.ShadowCSS.strictStyling is set to true then\n  selectors are scoped by adding an attribute selector suffix to each\n  simple selector that contains the host element tag name. Each element\n  in the element's ShadowDOM template is also given the scope attribute.\n  Thus, these rules match only elements that have the scope attribute.\n  For example, given a scope name of x-foo, a rule like this:\n\n    div {\n      font-weight: bold;\n    }\n\n  becomes:\n\n    div[x-foo] {\n      font-weight: bold;\n    }\n\n  Note that elements that are dynamically added to a scope must have the scope\n  selector added to them manually.\n\n  * upper/lower bound encapsulation: Styles which are defined outside a\n  shadowRoot should not cross the ShadowDOM boundary and should not apply\n  inside a shadowRoot.\n\n  This styling behavior is not emulated. Some possible ways to do this that\n  were rejected due to complexity and/or performance concerns include: (1) reset\n  every possible property for every possible selector for a given scope name;\n  (2) re-implement css in javascript.\n\n  As an alternative, users should make sure to use selectors\n  specific to the scope in which they are working.\n\n  * ::distributed: This behavior is not emulated. It's often not necessary\n  to style the contents of a specific insertion point and instead, descendants\n  of the host element can be styled selectively. Users can also create an\n  extra node around an insertion point and style that node's contents\n  via descendent selectors. For example, with a shadowRoot like this:\n\n    <style>\n      ::content(div) {\n        background: red;\n      }\n    </style>\n    <content></content>\n\n  could become:\n\n    <style>\n      / *@polyfill .content-container div * /\n      ::content(div) {\n        background: red;\n      }\n    </style>\n    <div class=\"content-container\">\n      <content></content>\n    </div>\n\n  Note the use of @polyfill in the comment above a ShadowDOM specific style\n  declaration. This is a directive to the styling shim to use the selector\n  in comments in lieu of the next selector when running under polyfill.\n*/\n\n\nvar ShadowCss = /*#__PURE__*/function () {\n  function ShadowCss() {\n    _classCallCheck(this, ShadowCss);\n\n    this.strictStyling = true;\n  }\n  /*\n   * Shim some cssText with the given selector. Returns cssText that can\n   * be included in the document via WebComponents.ShadowCSS.addCssToDocument(css).\n   *\n   * When strictStyling is true:\n   * - selector is the attribute added to all elements inside the host,\n   * - hostSelector is the attribute added to the host itself.\n   */\n\n\n  _createClass(ShadowCss, [{\n    key: \"shimCssText\",\n    value: function shimCssText(cssText, selector) {\n      var hostSelector = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : '';\n      var commentsWithHash = extractCommentsWithHash(cssText);\n      cssText = stripComments(cssText);\n      cssText = this._insertDirectives(cssText);\n\n      var scopedCssText = this._scopeCssText(cssText, selector, hostSelector);\n\n      return [scopedCssText].concat(_toConsumableArray(commentsWithHash)).join('\\n');\n    }\n  }, {\n    key: \"_insertDirectives\",\n    value: function _insertDirectives(cssText) {\n      cssText = this._insertPolyfillDirectivesInCssText(cssText);\n      return this._insertPolyfillRulesInCssText(cssText);\n    }\n    /*\n     * Process styles to convert native ShadowDOM rules that will trip\n     * up the css parser; we rely on decorating the stylesheet with inert rules.\n     *\n     * For example, we convert this rule:\n     *\n     * polyfill-next-selector { content: ':host menu-item'; }\n     * ::content menu-item {\n     *\n     * to this:\n     *\n     * scopeName menu-item {\n     *\n     **/\n\n  }, {\n    key: \"_insertPolyfillDirectivesInCssText\",\n    value: function _insertPolyfillDirectivesInCssText(cssText) {\n      // Difference with webcomponents.js: does not handle comments\n      return cssText.replace(_cssContentNextSelectorRe, function () {\n        return (arguments.length <= 2 ? undefined : arguments[2]) + '{';\n      });\n    }\n    /*\n     * Process styles to add rules which will only apply under the polyfill\n     *\n     * For example, we convert this rule:\n     *\n     * polyfill-rule {\n     *   content: ':host menu-item';\n     * ...\n     * }\n     *\n     * to this:\n     *\n     * scopeName menu-item {...}\n     *\n     **/\n\n  }, {\n    key: \"_insertPolyfillRulesInCssText\",\n    value: function _insertPolyfillRulesInCssText(cssText) {\n      // Difference with webcomponents.js: does not handle comments\n      return cssText.replace(_cssContentRuleRe, function () {\n        for (var _len3 = arguments.length, m = new Array(_len3), _key4 = 0; _key4 < _len3; _key4++) {\n          m[_key4] = arguments[_key4];\n        }\n\n        var rule = m[0].replace(m[1], '').replace(m[2], '');\n        return m[4] + rule;\n      });\n    }\n    /* Ensure styles are scoped. Pseudo-scoping takes a rule like:\n     *\n     *  .foo {... }\n     *\n     *  and converts this to\n     *\n     *  scopeName .foo { ... }\n     */\n\n  }, {\n    key: \"_scopeCssText\",\n    value: function _scopeCssText(cssText, scopeSelector, hostSelector) {\n      var unscopedRules = this._extractUnscopedRulesFromCssText(cssText); // replace :host and :host-context -shadowcsshost and -shadowcsshost respectively\n\n\n      cssText = this._insertPolyfillHostInCssText(cssText);\n      cssText = this._convertColonHost(cssText);\n      cssText = this._convertColonHostContext(cssText);\n      cssText = this._convertShadowDOMSelectors(cssText);\n\n      if (scopeSelector) {\n        cssText = this._scopeSelectors(cssText, scopeSelector, hostSelector);\n      }\n\n      cssText = cssText + '\\n' + unscopedRules;\n      return cssText.trim();\n    }\n    /*\n     * Process styles to add rules which will only apply under the polyfill\n     * and do not process via CSSOM. (CSSOM is destructive to rules on rare\n     * occasions, e.g. -webkit-calc on Safari.)\n     * For example, we convert this rule:\n     *\n     * @polyfill-unscoped-rule {\n     *   content: 'menu-item';\n     * ... }\n     *\n     * to this:\n     *\n     * menu-item {...}\n     *\n     **/\n\n  }, {\n    key: \"_extractUnscopedRulesFromCssText\",\n    value: function _extractUnscopedRulesFromCssText(cssText) {\n      // Difference with webcomponents.js: does not handle comments\n      var r = '';\n      var m;\n      _cssContentUnscopedRuleRe.lastIndex = 0;\n\n      while ((m = _cssContentUnscopedRuleRe.exec(cssText)) !== null) {\n        var rule = m[0].replace(m[2], '').replace(m[1], m[4]);\n        r += rule + '\\n\\n';\n      }\n\n      return r;\n    }\n    /*\n     * convert a rule like :host(.foo) > .bar { }\n     *\n     * to\n     *\n     * .foo<scopeName> > .bar\n     */\n\n  }, {\n    key: \"_convertColonHost\",\n    value: function _convertColonHost(cssText) {\n      return this._convertColonRule(cssText, _cssColonHostRe, this._colonHostPartReplacer);\n    }\n    /*\n     * convert a rule like :host-context(.foo) > .bar { }\n     *\n     * to\n     *\n     * .foo<scopeName> > .bar, .foo scopeName > .bar { }\n     *\n     * and\n     *\n     * :host-context(.foo:host) .bar { ... }\n     *\n     * to\n     *\n     * .foo<scopeName> .bar { ... }\n     */\n\n  }, {\n    key: \"_convertColonHostContext\",\n    value: function _convertColonHostContext(cssText) {\n      return this._convertColonRule(cssText, _cssColonHostContextRe, this._colonHostContextPartReplacer);\n    }\n  }, {\n    key: \"_convertColonRule\",\n    value: function _convertColonRule(cssText, regExp, partReplacer) {\n      // m[1] = :host(-context), m[2] = contents of (), m[3] rest of rule\n      return cssText.replace(regExp, function () {\n        for (var _len4 = arguments.length, m = new Array(_len4), _key5 = 0; _key5 < _len4; _key5++) {\n          m[_key5] = arguments[_key5];\n        }\n\n        if (m[2]) {\n          var parts = m[2].split(',');\n          var r = [];\n\n          for (var i = 0; i < parts.length; i++) {\n            var p = parts[i].trim();\n            if (!p) break;\n            r.push(partReplacer(_polyfillHostNoCombinator, p, m[3]));\n          }\n\n          return r.join(',');\n        } else {\n          return _polyfillHostNoCombinator + m[3];\n        }\n      });\n    }\n  }, {\n    key: \"_colonHostContextPartReplacer\",\n    value: function _colonHostContextPartReplacer(host, part, suffix) {\n      if (part.indexOf(_polyfillHost) > -1) {\n        return this._colonHostPartReplacer(host, part, suffix);\n      } else {\n        return host + part + suffix + ', ' + part + ' ' + host + suffix;\n      }\n    }\n  }, {\n    key: \"_colonHostPartReplacer\",\n    value: function _colonHostPartReplacer(host, part, suffix) {\n      return host + part.replace(_polyfillHost, '') + suffix;\n    }\n    /*\n     * Convert combinators like ::shadow and pseudo-elements like ::content\n     * by replacing with space.\n     */\n\n  }, {\n    key: \"_convertShadowDOMSelectors\",\n    value: function _convertShadowDOMSelectors(cssText) {\n      return _shadowDOMSelectorsRe.reduce(function (result, pattern) {\n        return result.replace(pattern, ' ');\n      }, cssText);\n    } // change a selector like 'div' to 'name div'\n\n  }, {\n    key: \"_scopeSelectors\",\n    value: function _scopeSelectors(cssText, scopeSelector, hostSelector) {\n      var _this116 = this;\n\n      return processRules(cssText, function (rule) {\n        var selector = rule.selector;\n        var content = rule.content;\n\n        if (rule.selector[0] != '@') {\n          selector = _this116._scopeSelector(rule.selector, scopeSelector, hostSelector, _this116.strictStyling);\n        } else if (rule.selector.startsWith('@media') || rule.selector.startsWith('@supports') || rule.selector.startsWith('@page') || rule.selector.startsWith('@document')) {\n          content = _this116._scopeSelectors(rule.content, scopeSelector, hostSelector);\n        }\n\n        return new CssRule(selector, content);\n      });\n    }\n  }, {\n    key: \"_scopeSelector\",\n    value: function _scopeSelector(selector, scopeSelector, hostSelector, strict) {\n      var _this117 = this;\n\n      return selector.split(',').map(function (part) {\n        return part.trim().split(_shadowDeepSelectors);\n      }).map(function (deepParts) {\n        var _deepParts = _toArray(deepParts),\n            shallowPart = _deepParts[0],\n            otherParts = _deepParts.slice(1);\n\n        var applyScope = function applyScope(shallowPart) {\n          if (_this117._selectorNeedsScoping(shallowPart, scopeSelector)) {\n            return strict ? _this117._applyStrictSelectorScope(shallowPart, scopeSelector, hostSelector) : _this117._applySelectorScope(shallowPart, scopeSelector, hostSelector);\n          } else {\n            return shallowPart;\n          }\n        };\n\n        return [applyScope(shallowPart)].concat(_toConsumableArray(otherParts)).join(' ');\n      }).join(', ');\n    }\n  }, {\n    key: \"_selectorNeedsScoping\",\n    value: function _selectorNeedsScoping(selector, scopeSelector) {\n      var re = this._makeScopeMatcher(scopeSelector);\n\n      return !re.test(selector);\n    }\n  }, {\n    key: \"_makeScopeMatcher\",\n    value: function _makeScopeMatcher(scopeSelector) {\n      var lre = /\\[/g;\n      var rre = /\\]/g;\n      scopeSelector = scopeSelector.replace(lre, '\\\\[').replace(rre, '\\\\]');\n      return new RegExp('^(' + scopeSelector + ')' + _selectorReSuffix, 'm');\n    }\n  }, {\n    key: \"_applySelectorScope\",\n    value: function _applySelectorScope(selector, scopeSelector, hostSelector) {\n      // Difference from webcomponents.js: scopeSelector could not be an array\n      return this._applySimpleSelectorScope(selector, scopeSelector, hostSelector);\n    } // scope via name and [is=name]\n\n  }, {\n    key: \"_applySimpleSelectorScope\",\n    value: function _applySimpleSelectorScope(selector, scopeSelector, hostSelector) {\n      // In Android browser, the lastIndex is not reset when the regex is used in String.replace()\n      _polyfillHostRe.lastIndex = 0;\n\n      if (_polyfillHostRe.test(selector)) {\n        var replaceBy = this.strictStyling ? \"[\".concat(hostSelector, \"]\") : scopeSelector;\n        return selector.replace(_polyfillHostNoCombinatorRe, function (hnc, selector) {\n          return selector.replace(/([^:]*)(:*)(.*)/, function (_, before, colon, after) {\n            return before + replaceBy + colon + after;\n          });\n        }).replace(_polyfillHostRe, replaceBy + ' ');\n      }\n\n      return scopeSelector + ' ' + selector;\n    } // return a selector with [name] suffix on each simple selector\n    // e.g. .foo.bar > .zot becomes .foo[name].bar[name] > .zot[name]  /** @internal */\n\n  }, {\n    key: \"_applyStrictSelectorScope\",\n    value: function _applyStrictSelectorScope(selector, scopeSelector, hostSelector) {\n      var _this118 = this;\n\n      var isRe = /\\[is=([^\\]]*)\\]/g;\n      scopeSelector = scopeSelector.replace(isRe, function (_) {\n        return arguments.length <= 1 ? undefined : arguments[1];\n      });\n      var attrName = '[' + scopeSelector + ']';\n\n      var _scopeSelectorPart = function _scopeSelectorPart(p) {\n        var scopedP = p.trim();\n\n        if (!scopedP) {\n          return '';\n        }\n\n        if (p.indexOf(_polyfillHostNoCombinator) > -1) {\n          scopedP = _this118._applySimpleSelectorScope(p, scopeSelector, hostSelector);\n        } else {\n          // remove :host since it should be unnecessary\n          var t = p.replace(_polyfillHostRe, '');\n\n          if (t.length > 0) {\n            var matches = t.match(/([^:]*)(:*)(.*)/);\n\n            if (matches) {\n              scopedP = matches[1] + attrName + matches[2] + matches[3];\n            }\n          }\n        }\n\n        return scopedP;\n      };\n\n      var safeContent = new SafeSelector(selector);\n      selector = safeContent.content();\n      var scopedSelector = '';\n      var startIndex = 0;\n      var res;\n      var sep = /( |>|\\+|~(?!=))\\s*/g; // If a selector appears before :host it should not be shimmed as it\n      // matches on ancestor elements and not on elements in the host's shadow\n      // `:host-context(div)` is transformed to\n      // `-shadowcsshost-no-combinatordiv, div -shadowcsshost-no-combinator`\n      // the `div` is not part of the component in the 2nd selectors and should not be scoped.\n      // Historically `component-tag:host` was matching the component so we also want to preserve\n      // this behavior to avoid breaking legacy apps (it should not match).\n      // The behavior should be:\n      // - `tag:host` -> `tag[h]` (this is to avoid breaking legacy apps, should not match anything)\n      // - `tag :host` -> `tag [h]` (`tag` is not scoped because it's considered part of a\n      //   `:host-context(tag)`)\n\n      var hasHost = selector.indexOf(_polyfillHostNoCombinator) > -1; // Only scope parts after the first `-shadowcsshost-no-combinator` when it is present\n\n      var shouldScope = !hasHost;\n\n      while ((res = sep.exec(selector)) !== null) {\n        var separator = res[1];\n\n        var _part = selector.slice(startIndex, res.index).trim();\n\n        shouldScope = shouldScope || _part.indexOf(_polyfillHostNoCombinator) > -1;\n        var scopedPart = shouldScope ? _scopeSelectorPart(_part) : _part;\n        scopedSelector += \"\".concat(scopedPart, \" \").concat(separator, \" \");\n        startIndex = sep.lastIndex;\n      }\n\n      var part = selector.substring(startIndex);\n      shouldScope = shouldScope || part.indexOf(_polyfillHostNoCombinator) > -1;\n      scopedSelector += shouldScope ? _scopeSelectorPart(part) : part; // replace the placeholders with their original values\n\n      return safeContent.restore(scopedSelector);\n    }\n  }, {\n    key: \"_insertPolyfillHostInCssText\",\n    value: function _insertPolyfillHostInCssText(selector) {\n      return selector.replace(_colonHostContextRe, _polyfillHostContext).replace(_colonHostRe, _polyfillHost);\n    }\n  }]);\n\n  return ShadowCss;\n}();\n\nvar SafeSelector = /*#__PURE__*/function () {\n  function SafeSelector(selector) {\n    var _this119 = this;\n\n    _classCallCheck(this, SafeSelector);\n\n    this.placeholders = [];\n    this.index = 0; // Replaces attribute selectors with placeholders.\n    // The WS in [attr=\"va lue\"] would otherwise be interpreted as a selector separator.\n\n    selector = selector.replace(/(\\[[^\\]]*\\])/g, function (_, keep) {\n      var replaceBy = \"__ph-\".concat(_this119.index, \"__\");\n\n      _this119.placeholders.push(keep);\n\n      _this119.index++;\n      return replaceBy;\n    }); // Replaces the expression in `:nth-child(2n + 1)` with a placeholder.\n    // WS and \"+\" would otherwise be interpreted as selector separators.\n\n    this._content = selector.replace(/(:nth-[-\\w]+)(\\([^)]+\\))/g, function (_, pseudo, exp) {\n      var replaceBy = \"__ph-\".concat(_this119.index, \"__\");\n\n      _this119.placeholders.push(exp);\n\n      _this119.index++;\n      return pseudo + replaceBy;\n    });\n  }\n\n  _createClass(SafeSelector, [{\n    key: \"restore\",\n    value: function restore(content) {\n      var _this120 = this;\n\n      return content.replace(/__ph-(\\d+)__/g, function (ph, index) {\n        return _this120.placeholders[+index];\n      });\n    }\n  }, {\n    key: \"content\",\n    value: function content() {\n      return this._content;\n    }\n  }]);\n\n  return SafeSelector;\n}();\n\nvar _cssContentNextSelectorRe = /polyfill-next-selector[^}]*content:[\\s]*?(['\"])(.*?)\\1[;\\s]*}([^{]*?){/gim;\nvar _cssContentRuleRe = /(polyfill-rule)[^}]*(content:[\\s]*(['\"])(.*?)\\3)[;\\s]*[^}]*}/gim;\nvar _cssContentUnscopedRuleRe = /(polyfill-unscoped-rule)[^}]*(content:[\\s]*(['\"])(.*?)\\3)[;\\s]*[^}]*}/gim;\nvar _polyfillHost = '-shadowcsshost'; // note: :host-context pre-processed to -shadowcsshostcontext.\n\nvar _polyfillHostContext = '-shadowcsscontext';\n\nvar _parenSuffix = ')(?:\\\\((' + '(?:\\\\([^)(]*\\\\)|[^)(]*)+?' + ')\\\\))?([^,{]*)';\n\nvar _cssColonHostRe = new RegExp('(' + _polyfillHost + _parenSuffix, 'gim');\n\nvar _cssColonHostContextRe = new RegExp('(' + _polyfillHostContext + _parenSuffix, 'gim');\n\nvar _polyfillHostNoCombinator = _polyfillHost + '-no-combinator';\n\nvar _polyfillHostNoCombinatorRe = /-shadowcsshost-no-combinator([^\\s]*)/;\nvar _shadowDOMSelectorsRe = [/::shadow/g, /::content/g, // Deprecated selectors\n/\\/shadow-deep\\//g, /\\/shadow\\//g]; // The deep combinator is deprecated in the CSS spec\n// Support for `>>>`, `deep`, `::ng-deep` is then also deprecated and will be removed in the future.\n// see https://github.com/angular/angular/pull/17677\n\nvar _shadowDeepSelectors = /(?:>>>)|(?:\\/deep\\/)|(?:::ng-deep)/g;\nvar _selectorReSuffix = '([>\\\\s~+\\[.,{:][\\\\s\\\\S]*)?$';\nvar _polyfillHostRe = /-shadowcsshost/gim;\nvar _colonHostRe = /:host/gim;\nvar _colonHostContextRe = /:host-context/gim;\nvar _commentRe = /\\/\\*\\s*[\\s\\S]*?\\*\\//g;\n\nfunction stripComments(input) {\n  return input.replace(_commentRe, '');\n}\n\nvar _commentWithHashRe = /\\/\\*\\s*#\\s*source(Mapping)?URL=[\\s\\S]+?\\*\\//g;\n\nfunction extractCommentsWithHash(input) {\n  return input.match(_commentWithHashRe) || [];\n}\n\nvar BLOCK_PLACEHOLDER = '%BLOCK%';\nvar QUOTE_PLACEHOLDER = '%QUOTED%';\nvar _ruleRe = /(\\s*)([^;\\{\\}]+?)(\\s*)((?:{%BLOCK%}?\\s*;?)|(?:\\s*;))/g;\nvar _quotedRe = /%QUOTED%/g;\nvar CONTENT_PAIRS = new Map([['{', '}']]);\nvar QUOTE_PAIRS = new Map([[\"\\\"\", \"\\\"\"], [\"'\", \"'\"]]);\n\nvar CssRule = /*#__PURE__*/_createClass(function CssRule(selector, content) {\n  _classCallCheck(this, CssRule);\n\n  this.selector = selector;\n  this.content = content;\n});\n\nfunction processRules(input, ruleCallback) {\n  var inputWithEscapedQuotes = escapeBlocks(input, QUOTE_PAIRS, QUOTE_PLACEHOLDER);\n  var inputWithEscapedBlocks = escapeBlocks(inputWithEscapedQuotes.escapedString, CONTENT_PAIRS, BLOCK_PLACEHOLDER);\n  var nextBlockIndex = 0;\n  var nextQuoteIndex = 0;\n  return inputWithEscapedBlocks.escapedString.replace(_ruleRe, function () {\n    var selector = arguments.length <= 2 ? undefined : arguments[2];\n    var content = '';\n    var suffix = arguments.length <= 4 ? undefined : arguments[4];\n    var contentPrefix = '';\n\n    if (suffix && suffix.startsWith('{' + BLOCK_PLACEHOLDER)) {\n      content = inputWithEscapedBlocks.blocks[nextBlockIndex++];\n      suffix = suffix.substring(BLOCK_PLACEHOLDER.length + 1);\n      contentPrefix = '{';\n    }\n\n    var rule = ruleCallback(new CssRule(selector, content));\n    return \"\".concat(arguments.length <= 1 ? undefined : arguments[1]).concat(rule.selector).concat(arguments.length <= 3 ? undefined : arguments[3]).concat(contentPrefix).concat(rule.content).concat(suffix);\n  }).replace(_quotedRe, function () {\n    return inputWithEscapedQuotes.blocks[nextQuoteIndex++];\n  });\n}\n\nvar StringWithEscapedBlocks = /*#__PURE__*/_createClass(function StringWithEscapedBlocks(escapedString, blocks) {\n  _classCallCheck(this, StringWithEscapedBlocks);\n\n  this.escapedString = escapedString;\n  this.blocks = blocks;\n});\n\nfunction escapeBlocks(input, charPairs, placeholder) {\n  var resultParts = [];\n  var escapedBlocks = [];\n  var openCharCount = 0;\n  var nonBlockStartIndex = 0;\n  var blockStartIndex = -1;\n  var openChar;\n  var closeChar;\n\n  for (var i = 0; i < input.length; i++) {\n    var char = input[i];\n\n    if (char === '\\\\') {\n      i++;\n    } else if (char === closeChar) {\n      openCharCount--;\n\n      if (openCharCount === 0) {\n        escapedBlocks.push(input.substring(blockStartIndex, i));\n        resultParts.push(placeholder);\n        nonBlockStartIndex = i;\n        blockStartIndex = -1;\n        openChar = closeChar = undefined;\n      }\n    } else if (char === openChar) {\n      openCharCount++;\n    } else if (openCharCount === 0 && charPairs.has(char)) {\n      openChar = char;\n      closeChar = charPairs.get(char);\n      openCharCount = 1;\n      blockStartIndex = i + 1;\n      resultParts.push(input.substring(nonBlockStartIndex, blockStartIndex));\n    }\n  }\n\n  if (blockStartIndex !== -1) {\n    escapedBlocks.push(input.substring(blockStartIndex));\n    resultParts.push(placeholder);\n  } else {\n    resultParts.push(input.substring(nonBlockStartIndex));\n  }\n\n  return new StringWithEscapedBlocks(resultParts.join(''), escapedBlocks);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar COMPONENT_VARIABLE = '%COMP%';\nvar HOST_ATTR = \"_nghost-\".concat(COMPONENT_VARIABLE);\nvar CONTENT_ATTR = \"_ngcontent-\".concat(COMPONENT_VARIABLE);\n\nvar StylesCompileDependency = /*#__PURE__*/_createClass(function StylesCompileDependency(name, moduleUrl, setValue) {\n  _classCallCheck(this, StylesCompileDependency);\n\n  this.name = name;\n  this.moduleUrl = moduleUrl;\n  this.setValue = setValue;\n});\n\nvar CompiledStylesheet = /*#__PURE__*/_createClass(function CompiledStylesheet(outputCtx, stylesVar, dependencies, isShimmed, meta) {\n  _classCallCheck(this, CompiledStylesheet);\n\n  this.outputCtx = outputCtx;\n  this.stylesVar = stylesVar;\n  this.dependencies = dependencies;\n  this.isShimmed = isShimmed;\n  this.meta = meta;\n});\n\nvar StyleCompiler = /*#__PURE__*/function () {\n  function StyleCompiler(_urlResolver) {\n    _classCallCheck(this, StyleCompiler);\n\n    this._urlResolver = _urlResolver;\n    this._shadowCss = new ShadowCss();\n  }\n\n  _createClass(StyleCompiler, [{\n    key: \"compileComponent\",\n    value: function compileComponent(outputCtx, comp) {\n      var template = comp.template;\n      return this._compileStyles(outputCtx, comp, new CompileStylesheetMetadata({\n        styles: template.styles,\n        styleUrls: template.styleUrls,\n        moduleUrl: identifierModuleUrl(comp.type)\n      }), this.needsStyleShim(comp), true);\n    }\n  }, {\n    key: \"compileStyles\",\n    value: function compileStyles(outputCtx, comp, stylesheet) {\n      var shim = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : this.needsStyleShim(comp);\n      return this._compileStyles(outputCtx, comp, stylesheet, shim, false);\n    }\n  }, {\n    key: \"needsStyleShim\",\n    value: function needsStyleShim(comp) {\n      return comp.template.encapsulation === ViewEncapsulation.Emulated;\n    }\n  }, {\n    key: \"_compileStyles\",\n    value: function _compileStyles(outputCtx, comp, stylesheet, shim, isComponentStylesheet) {\n      var _this121 = this;\n\n      var styleExpressions = stylesheet.styles.map(function (plainStyle) {\n        return literal(_this121._shimIfNeeded(plainStyle, shim));\n      });\n      var dependencies = [];\n      stylesheet.styleUrls.forEach(function (styleUrl) {\n        var exprIndex = styleExpressions.length; // Note: This placeholder will be filled later.\n\n        styleExpressions.push(null);\n        dependencies.push(new StylesCompileDependency(getStylesVarName(null), styleUrl, function (value) {\n          return styleExpressions[exprIndex] = outputCtx.importExpr(value);\n        }));\n      }); // styles variable contains plain strings and arrays of other styles arrays (recursive),\n      // so we set its type to dynamic.\n\n      var stylesVar = getStylesVarName(isComponentStylesheet ? comp : null);\n      var stmt = variable(stylesVar).set(literalArr(styleExpressions, new ArrayType(DYNAMIC_TYPE, [TypeModifier.Const]))).toDeclStmt(null, isComponentStylesheet ? [StmtModifier.Final] : [StmtModifier.Final, StmtModifier.Exported]);\n      outputCtx.statements.push(stmt);\n      return new CompiledStylesheet(outputCtx, stylesVar, dependencies, shim, stylesheet);\n    }\n  }, {\n    key: \"_shimIfNeeded\",\n    value: function _shimIfNeeded(style, shim) {\n      return shim ? this._shadowCss.shimCssText(style, CONTENT_ATTR, HOST_ATTR) : style;\n    }\n  }]);\n\n  return StyleCompiler;\n}();\n\nfunction getStylesVarName(component) {\n  var result = \"styles\";\n\n  if (component) {\n    result += \"_\".concat(identifierName(component.type));\n  }\n\n  return result;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A path is an ordered set of elements. Typically a path is to  a\n * particular offset in a source file. The head of the list is the top\n * most node. The tail is the node that contains the offset directly.\n *\n * For example, the expression `a + b + c` might have an ast that looks\n * like:\n *     +\n *    / \\\n *   a   +\n *      / \\\n *     b   c\n *\n * The path to the node at offset 9 would be `['+' at 1-10, '+' at 7-10,\n * 'c' at 9-10]` and the path the node at offset 1 would be\n * `['+' at 1-10, 'a' at 1-2]`.\n */\n\n\nvar AstPath = /*#__PURE__*/function () {\n  function AstPath(path) {\n    var position = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : -1;\n\n    _classCallCheck(this, AstPath);\n\n    this.path = path;\n    this.position = position;\n  }\n\n  _createClass(AstPath, [{\n    key: \"empty\",\n    get: function get() {\n      return !this.path || !this.path.length;\n    }\n  }, {\n    key: \"head\",\n    get: function get() {\n      return this.path[0];\n    }\n  }, {\n    key: \"tail\",\n    get: function get() {\n      return this.path[this.path.length - 1];\n    }\n  }, {\n    key: \"parentOf\",\n    value: function parentOf(node) {\n      return node && this.path[this.path.indexOf(node) - 1];\n    }\n  }, {\n    key: \"childOf\",\n    value: function childOf(node) {\n      return this.path[this.path.indexOf(node) + 1];\n    }\n  }, {\n    key: \"first\",\n    value: function first(ctor) {\n      for (var i = this.path.length - 1; i >= 0; i--) {\n        var item = this.path[i];\n        if (item instanceof ctor) return item;\n      }\n    }\n  }, {\n    key: \"push\",\n    value: function push(node) {\n      this.path.push(node);\n    }\n  }, {\n    key: \"pop\",\n    value: function pop() {\n      return this.path.pop();\n    }\n  }]);\n\n  return AstPath;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar NodeWithI18n = /*#__PURE__*/_createClass(function NodeWithI18n(sourceSpan, i18n) {\n  _classCallCheck(this, NodeWithI18n);\n\n  this.sourceSpan = sourceSpan;\n  this.i18n = i18n;\n});\n\nvar Text$3 = /*#__PURE__*/function (_NodeWithI18n) {\n  _inherits(Text$3, _NodeWithI18n);\n\n  var _super80 = _createSuper(Text$3);\n\n  function Text$3(value, sourceSpan, i18n) {\n    var _this122;\n\n    _classCallCheck(this, Text$3);\n\n    _this122 = _super80.call(this, sourceSpan, i18n);\n    _this122.value = value;\n    return _this122;\n  }\n\n  _createClass(Text$3, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitText(this, context);\n    }\n  }]);\n\n  return Text$3;\n}(NodeWithI18n);\n\nvar Expansion = /*#__PURE__*/function (_NodeWithI18n2) {\n  _inherits(Expansion, _NodeWithI18n2);\n\n  var _super81 = _createSuper(Expansion);\n\n  function Expansion(switchValue, type, cases, sourceSpan, switchValueSourceSpan, i18n) {\n    var _this123;\n\n    _classCallCheck(this, Expansion);\n\n    _this123 = _super81.call(this, sourceSpan, i18n);\n    _this123.switchValue = switchValue;\n    _this123.type = type;\n    _this123.cases = cases;\n    _this123.switchValueSourceSpan = switchValueSourceSpan;\n    return _this123;\n  }\n\n  _createClass(Expansion, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitExpansion(this, context);\n    }\n  }]);\n\n  return Expansion;\n}(NodeWithI18n);\n\nvar ExpansionCase = /*#__PURE__*/function () {\n  function ExpansionCase(value, expression, sourceSpan, valueSourceSpan, expSourceSpan) {\n    _classCallCheck(this, ExpansionCase);\n\n    this.value = value;\n    this.expression = expression;\n    this.sourceSpan = sourceSpan;\n    this.valueSourceSpan = valueSourceSpan;\n    this.expSourceSpan = expSourceSpan;\n  }\n\n  _createClass(ExpansionCase, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitExpansionCase(this, context);\n    }\n  }]);\n\n  return ExpansionCase;\n}();\n\nvar Attribute = /*#__PURE__*/function (_NodeWithI18n3) {\n  _inherits(Attribute, _NodeWithI18n3);\n\n  var _super82 = _createSuper(Attribute);\n\n  function Attribute(name, value, sourceSpan, valueSpan, i18n) {\n    var _this124;\n\n    _classCallCheck(this, Attribute);\n\n    _this124 = _super82.call(this, sourceSpan, i18n);\n    _this124.name = name;\n    _this124.value = value;\n    _this124.valueSpan = valueSpan;\n    return _this124;\n  }\n\n  _createClass(Attribute, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitAttribute(this, context);\n    }\n  }]);\n\n  return Attribute;\n}(NodeWithI18n);\n\nvar Element$1 = /*#__PURE__*/function (_NodeWithI18n4) {\n  _inherits(Element$1, _NodeWithI18n4);\n\n  var _super83 = _createSuper(Element$1);\n\n  function Element$1(name, attrs, children, sourceSpan, startSourceSpan) {\n    var _this125;\n\n    var endSourceSpan = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : null;\n    var i18n = arguments.length > 6 ? arguments[6] : undefined;\n\n    _classCallCheck(this, Element$1);\n\n    _this125 = _super83.call(this, sourceSpan, i18n);\n    _this125.name = name;\n    _this125.attrs = attrs;\n    _this125.children = children;\n    _this125.startSourceSpan = startSourceSpan;\n    _this125.endSourceSpan = endSourceSpan;\n    return _this125;\n  }\n\n  _createClass(Element$1, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitElement(this, context);\n    }\n  }]);\n\n  return Element$1;\n}(NodeWithI18n);\n\nvar Comment = /*#__PURE__*/function () {\n  function Comment(value, sourceSpan) {\n    _classCallCheck(this, Comment);\n\n    this.value = value;\n    this.sourceSpan = sourceSpan;\n  }\n\n  _createClass(Comment, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitComment(this, context);\n    }\n  }]);\n\n  return Comment;\n}();\n\nfunction visitAll$1(visitor, nodes) {\n  var context = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;\n  var result = [];\n  var visit = visitor.visit ? function (ast) {\n    return visitor.visit(ast, context) || ast.visit(visitor, context);\n  } : function (ast) {\n    return ast.visit(visitor, context);\n  };\n  nodes.forEach(function (ast) {\n    var astResult = visit(ast);\n\n    if (astResult) {\n      result.push(astResult);\n    }\n  });\n  return result;\n}\n\nvar RecursiveVisitor$1 = /*#__PURE__*/function () {\n  function RecursiveVisitor$1() {\n    _classCallCheck(this, RecursiveVisitor$1);\n  }\n\n  _createClass(RecursiveVisitor$1, [{\n    key: \"visitElement\",\n    value: function visitElement(ast, context) {\n      this.visitChildren(context, function (visit) {\n        visit(ast.attrs);\n        visit(ast.children);\n      });\n    }\n  }, {\n    key: \"visitAttribute\",\n    value: function visitAttribute(ast, context) {}\n  }, {\n    key: \"visitText\",\n    value: function visitText(ast, context) {}\n  }, {\n    key: \"visitComment\",\n    value: function visitComment(ast, context) {}\n  }, {\n    key: \"visitExpansion\",\n    value: function visitExpansion(ast, context) {\n      return this.visitChildren(context, function (visit) {\n        visit(ast.cases);\n      });\n    }\n  }, {\n    key: \"visitExpansionCase\",\n    value: function visitExpansionCase(ast, context) {}\n  }, {\n    key: \"visitChildren\",\n    value: function visitChildren(context, cb) {\n      var results = [];\n      var t = this;\n\n      function visit(children) {\n        if (children) results.push(visitAll$1(t, children, context));\n      }\n\n      cb(visit);\n      return Array.prototype.concat.apply([], results);\n    }\n  }]);\n\n  return RecursiveVisitor$1;\n}();\n\nfunction spanOf(ast) {\n  var start = ast.sourceSpan.start.offset;\n  var end = ast.sourceSpan.end.offset;\n\n  if (ast instanceof Element$1) {\n    if (ast.endSourceSpan) {\n      end = ast.endSourceSpan.end.offset;\n    } else if (ast.children && ast.children.length) {\n      end = spanOf(ast.children[ast.children.length - 1]).end;\n    }\n  }\n\n  return {\n    start: start,\n    end: end\n  };\n}\n\nfunction findNode(nodes, position) {\n  var path = [];\n  var visitor = new ( /*#__PURE__*/function (_RecursiveVisitor$) {\n    _inherits(_class, _RecursiveVisitor$);\n\n    var _super84 = _createSuper(_class);\n\n    function _class() {\n      _classCallCheck(this, _class);\n\n      return _super84.apply(this, arguments);\n    }\n\n    _createClass(_class, [{\n      key: \"visit\",\n      value: function visit(ast, context) {\n        var span = spanOf(ast);\n\n        if (span.start <= position && position < span.end) {\n          path.push(ast);\n        } else {\n          // Returning a value here will result in the children being skipped.\n          return true;\n        }\n      }\n    }]);\n\n    return _class;\n  }(RecursiveVisitor$1))();\n  visitAll$1(visitor, nodes);\n  return new AstPath(path, position);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar TokenType;\n\n(function (TokenType) {\n  TokenType[TokenType[\"TAG_OPEN_START\"] = 0] = \"TAG_OPEN_START\";\n  TokenType[TokenType[\"TAG_OPEN_END\"] = 1] = \"TAG_OPEN_END\";\n  TokenType[TokenType[\"TAG_OPEN_END_VOID\"] = 2] = \"TAG_OPEN_END_VOID\";\n  TokenType[TokenType[\"TAG_CLOSE\"] = 3] = \"TAG_CLOSE\";\n  TokenType[TokenType[\"INCOMPLETE_TAG_OPEN\"] = 4] = \"INCOMPLETE_TAG_OPEN\";\n  TokenType[TokenType[\"TEXT\"] = 5] = \"TEXT\";\n  TokenType[TokenType[\"ESCAPABLE_RAW_TEXT\"] = 6] = \"ESCAPABLE_RAW_TEXT\";\n  TokenType[TokenType[\"RAW_TEXT\"] = 7] = \"RAW_TEXT\";\n  TokenType[TokenType[\"COMMENT_START\"] = 8] = \"COMMENT_START\";\n  TokenType[TokenType[\"COMMENT_END\"] = 9] = \"COMMENT_END\";\n  TokenType[TokenType[\"CDATA_START\"] = 10] = \"CDATA_START\";\n  TokenType[TokenType[\"CDATA_END\"] = 11] = \"CDATA_END\";\n  TokenType[TokenType[\"ATTR_NAME\"] = 12] = \"ATTR_NAME\";\n  TokenType[TokenType[\"ATTR_QUOTE\"] = 13] = \"ATTR_QUOTE\";\n  TokenType[TokenType[\"ATTR_VALUE\"] = 14] = \"ATTR_VALUE\";\n  TokenType[TokenType[\"DOC_TYPE\"] = 15] = \"DOC_TYPE\";\n  TokenType[TokenType[\"EXPANSION_FORM_START\"] = 16] = \"EXPANSION_FORM_START\";\n  TokenType[TokenType[\"EXPANSION_CASE_VALUE\"] = 17] = \"EXPANSION_CASE_VALUE\";\n  TokenType[TokenType[\"EXPANSION_CASE_EXP_START\"] = 18] = \"EXPANSION_CASE_EXP_START\";\n  TokenType[TokenType[\"EXPANSION_CASE_EXP_END\"] = 19] = \"EXPANSION_CASE_EXP_END\";\n  TokenType[TokenType[\"EXPANSION_FORM_END\"] = 20] = \"EXPANSION_FORM_END\";\n  TokenType[TokenType[\"EOF\"] = 21] = \"EOF\";\n})(TokenType || (TokenType = {}));\n\nvar Token = /*#__PURE__*/_createClass(function Token(type, parts, sourceSpan) {\n  _classCallCheck(this, Token);\n\n  this.type = type;\n  this.parts = parts;\n  this.sourceSpan = sourceSpan;\n});\n\nvar TokenError = /*#__PURE__*/function (_ParseError) {\n  _inherits(TokenError, _ParseError);\n\n  var _super85 = _createSuper(TokenError);\n\n  function TokenError(errorMsg, tokenType, span) {\n    var _this126;\n\n    _classCallCheck(this, TokenError);\n\n    _this126 = _super85.call(this, span, errorMsg);\n    _this126.tokenType = tokenType;\n    return _this126;\n  }\n\n  return _createClass(TokenError);\n}(ParseError);\n\nvar TokenizeResult = /*#__PURE__*/_createClass(function TokenizeResult(tokens, errors, nonNormalizedIcuExpressions) {\n  _classCallCheck(this, TokenizeResult);\n\n  this.tokens = tokens;\n  this.errors = errors;\n  this.nonNormalizedIcuExpressions = nonNormalizedIcuExpressions;\n});\n\nfunction tokenize(source, url, getTagDefinition) {\n  var options = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};\n  var tokenizer = new _Tokenizer(new ParseSourceFile(source, url), getTagDefinition, options);\n  tokenizer.tokenize();\n  return new TokenizeResult(mergeTextTokens(tokenizer.tokens), tokenizer.errors, tokenizer.nonNormalizedIcuExpressions);\n}\n\nvar _CR_OR_CRLF_REGEXP = /\\r\\n?/g;\n\nfunction _unexpectedCharacterErrorMsg(charCode) {\n  var char = charCode === $EOF ? 'EOF' : String.fromCharCode(charCode);\n  return \"Unexpected character \\\"\".concat(char, \"\\\"\");\n}\n\nfunction _unknownEntityErrorMsg(entitySrc) {\n  return \"Unknown entity \\\"\".concat(entitySrc, \"\\\" - use the \\\"&#<decimal>;\\\" or  \\\"&#x<hex>;\\\" syntax\");\n}\n\nfunction _unparsableEntityErrorMsg(type, entityStr) {\n  return \"Unable to parse entity \\\"\".concat(entityStr, \"\\\" - \").concat(type, \" character reference entities must end with \\\";\\\"\");\n}\n\nvar CharacterReferenceType;\n\n(function (CharacterReferenceType) {\n  CharacterReferenceType[\"HEX\"] = \"hexadecimal\";\n  CharacterReferenceType[\"DEC\"] = \"decimal\";\n})(CharacterReferenceType || (CharacterReferenceType = {}));\n\nvar _ControlFlowError = /*#__PURE__*/_createClass(function _ControlFlowError(error) {\n  _classCallCheck(this, _ControlFlowError);\n\n  this.error = error;\n}); // See http://www.w3.org/TR/html51/syntax.html#writing\n\n\nvar _Tokenizer = /*#__PURE__*/function () {\n  /**\n   * @param _file The html source file being tokenized.\n   * @param _getTagDefinition A function that will retrieve a tag definition for a given tag name.\n   * @param options Configuration of the tokenization.\n   */\n  function _Tokenizer(_file, _getTagDefinition, options) {\n    _classCallCheck(this, _Tokenizer);\n\n    this._getTagDefinition = _getTagDefinition;\n    this._currentTokenStart = null;\n    this._currentTokenType = null;\n    this._expansionCaseStack = [];\n    this._inInterpolation = false;\n    this.tokens = [];\n    this.errors = [];\n    this.nonNormalizedIcuExpressions = [];\n    this._tokenizeIcu = options.tokenizeExpansionForms || false;\n    this._interpolationConfig = options.interpolationConfig || DEFAULT_INTERPOLATION_CONFIG;\n    this._leadingTriviaCodePoints = options.leadingTriviaChars && options.leadingTriviaChars.map(function (c) {\n      return c.codePointAt(0) || 0;\n    });\n    var range = options.range || {\n      endPos: _file.content.length,\n      startPos: 0,\n      startLine: 0,\n      startCol: 0\n    };\n    this._cursor = options.escapedString ? new EscapedCharacterCursor(_file, range) : new PlainCharacterCursor(_file, range);\n    this._preserveLineEndings = options.preserveLineEndings || false;\n    this._escapedString = options.escapedString || false;\n    this._i18nNormalizeLineEndingsInICUs = options.i18nNormalizeLineEndingsInICUs || false;\n\n    try {\n      this._cursor.init();\n    } catch (e) {\n      this.handleError(e);\n    }\n  }\n\n  _createClass(_Tokenizer, [{\n    key: \"_processCarriageReturns\",\n    value: function _processCarriageReturns(content) {\n      if (this._preserveLineEndings) {\n        return content;\n      } // http://www.w3.org/TR/html5/syntax.html#preprocessing-the-input-stream\n      // In order to keep the original position in the source, we can not\n      // pre-process it.\n      // Instead CRs are processed right before instantiating the tokens.\n\n\n      return content.replace(_CR_OR_CRLF_REGEXP, '\\n');\n    }\n  }, {\n    key: \"tokenize\",\n    value: function tokenize() {\n      while (this._cursor.peek() !== $EOF) {\n        var _start2 = this._cursor.clone();\n\n        try {\n          if (this._attemptCharCode($LT)) {\n            if (this._attemptCharCode($BANG)) {\n              if (this._attemptCharCode($LBRACKET)) {\n                this._consumeCdata(_start2);\n              } else if (this._attemptCharCode($MINUS)) {\n                this._consumeComment(_start2);\n              } else {\n                this._consumeDocType(_start2);\n              }\n            } else if (this._attemptCharCode($SLASH)) {\n              this._consumeTagClose(_start2);\n            } else {\n              this._consumeTagOpen(_start2);\n            }\n          } else if (!(this._tokenizeIcu && this._tokenizeExpansionForm())) {\n            this._consumeText();\n          }\n        } catch (e) {\n          this.handleError(e);\n        }\n      }\n\n      this._beginToken(TokenType.EOF);\n\n      this._endToken([]);\n    }\n    /**\n     * @returns whether an ICU token has been created\n     * @internal\n     */\n\n  }, {\n    key: \"_tokenizeExpansionForm\",\n    value: function _tokenizeExpansionForm() {\n      if (this.isExpansionFormStart()) {\n        this._consumeExpansionFormStart();\n\n        return true;\n      }\n\n      if (isExpansionCaseStart(this._cursor.peek()) && this._isInExpansionForm()) {\n        this._consumeExpansionCaseStart();\n\n        return true;\n      }\n\n      if (this._cursor.peek() === $RBRACE) {\n        if (this._isInExpansionCase()) {\n          this._consumeExpansionCaseEnd();\n\n          return true;\n        }\n\n        if (this._isInExpansionForm()) {\n          this._consumeExpansionFormEnd();\n\n          return true;\n        }\n      }\n\n      return false;\n    }\n  }, {\n    key: \"_beginToken\",\n    value: function _beginToken(type) {\n      var start = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : this._cursor.clone();\n      this._currentTokenStart = start;\n      this._currentTokenType = type;\n    }\n  }, {\n    key: \"_endToken\",\n    value: function _endToken(parts, end) {\n      if (this._currentTokenStart === null) {\n        throw new TokenError('Programming error - attempted to end a token when there was no start to the token', this._currentTokenType, this._cursor.getSpan(end));\n      }\n\n      if (this._currentTokenType === null) {\n        throw new TokenError('Programming error - attempted to end a token which has no token type', null, this._cursor.getSpan(this._currentTokenStart));\n      }\n\n      var token = new Token(this._currentTokenType, parts, this._cursor.getSpan(this._currentTokenStart, this._leadingTriviaCodePoints));\n      this.tokens.push(token);\n      this._currentTokenStart = null;\n      this._currentTokenType = null;\n      return token;\n    }\n  }, {\n    key: \"_createError\",\n    value: function _createError(msg, span) {\n      if (this._isInExpansionForm()) {\n        msg += \" (Do you have an unescaped \\\"{\\\" in your template? Use \\\"{{ '{' }}\\\") to escape it.)\";\n      }\n\n      var error = new TokenError(msg, this._currentTokenType, span);\n      this._currentTokenStart = null;\n      this._currentTokenType = null;\n      return new _ControlFlowError(error);\n    }\n  }, {\n    key: \"handleError\",\n    value: function handleError(e) {\n      if (e instanceof CursorError) {\n        e = this._createError(e.msg, this._cursor.getSpan(e.cursor));\n      }\n\n      if (e instanceof _ControlFlowError) {\n        this.errors.push(e.error);\n      } else {\n        throw e;\n      }\n    }\n  }, {\n    key: \"_attemptCharCode\",\n    value: function _attemptCharCode(charCode) {\n      if (this._cursor.peek() === charCode) {\n        this._cursor.advance();\n\n        return true;\n      }\n\n      return false;\n    }\n  }, {\n    key: \"_attemptCharCodeCaseInsensitive\",\n    value: function _attemptCharCodeCaseInsensitive(charCode) {\n      if (compareCharCodeCaseInsensitive(this._cursor.peek(), charCode)) {\n        this._cursor.advance();\n\n        return true;\n      }\n\n      return false;\n    }\n  }, {\n    key: \"_requireCharCode\",\n    value: function _requireCharCode(charCode) {\n      var location = this._cursor.clone();\n\n      if (!this._attemptCharCode(charCode)) {\n        throw this._createError(_unexpectedCharacterErrorMsg(this._cursor.peek()), this._cursor.getSpan(location));\n      }\n    }\n  }, {\n    key: \"_attemptStr\",\n    value: function _attemptStr(chars) {\n      var len = chars.length;\n\n      if (this._cursor.charsLeft() < len) {\n        return false;\n      }\n\n      var initialPosition = this._cursor.clone();\n\n      for (var i = 0; i < len; i++) {\n        if (!this._attemptCharCode(chars.charCodeAt(i))) {\n          // If attempting to parse the string fails, we want to reset the parser\n          // to where it was before the attempt\n          this._cursor = initialPosition;\n          return false;\n        }\n      }\n\n      return true;\n    }\n  }, {\n    key: \"_attemptStrCaseInsensitive\",\n    value: function _attemptStrCaseInsensitive(chars) {\n      for (var i = 0; i < chars.length; i++) {\n        if (!this._attemptCharCodeCaseInsensitive(chars.charCodeAt(i))) {\n          return false;\n        }\n      }\n\n      return true;\n    }\n  }, {\n    key: \"_requireStr\",\n    value: function _requireStr(chars) {\n      var location = this._cursor.clone();\n\n      if (!this._attemptStr(chars)) {\n        throw this._createError(_unexpectedCharacterErrorMsg(this._cursor.peek()), this._cursor.getSpan(location));\n      }\n    }\n  }, {\n    key: \"_attemptCharCodeUntilFn\",\n    value: function _attemptCharCodeUntilFn(predicate) {\n      while (!predicate(this._cursor.peek())) {\n        this._cursor.advance();\n      }\n    }\n  }, {\n    key: \"_requireCharCodeUntilFn\",\n    value: function _requireCharCodeUntilFn(predicate, len) {\n      var start = this._cursor.clone();\n\n      this._attemptCharCodeUntilFn(predicate);\n\n      if (this._cursor.diff(start) < len) {\n        throw this._createError(_unexpectedCharacterErrorMsg(this._cursor.peek()), this._cursor.getSpan(start));\n      }\n    }\n  }, {\n    key: \"_attemptUntilChar\",\n    value: function _attemptUntilChar(char) {\n      while (this._cursor.peek() !== char) {\n        this._cursor.advance();\n      }\n    }\n  }, {\n    key: \"_readChar\",\n    value: function _readChar(decodeEntities) {\n      if (decodeEntities && this._cursor.peek() === $AMPERSAND) {\n        return this._decodeEntity();\n      } else {\n        // Don't rely upon reading directly from `_input` as the actual char value\n        // may have been generated from an escape sequence.\n        var char = String.fromCodePoint(this._cursor.peek());\n\n        this._cursor.advance();\n\n        return char;\n      }\n    }\n  }, {\n    key: \"_decodeEntity\",\n    value: function _decodeEntity() {\n      var start = this._cursor.clone();\n\n      this._cursor.advance();\n\n      if (this._attemptCharCode($HASH)) {\n        var isHex = this._attemptCharCode($x) || this._attemptCharCode($X);\n\n        var codeStart = this._cursor.clone();\n\n        this._attemptCharCodeUntilFn(isDigitEntityEnd);\n\n        if (this._cursor.peek() != $SEMICOLON) {\n          // Advance cursor to include the peeked character in the string provided to the error\n          // message.\n          this._cursor.advance();\n\n          var entityType = isHex ? CharacterReferenceType.HEX : CharacterReferenceType.DEC;\n          throw this._createError(_unparsableEntityErrorMsg(entityType, this._cursor.getChars(start)), this._cursor.getSpan());\n        }\n\n        var strNum = this._cursor.getChars(codeStart);\n\n        this._cursor.advance();\n\n        try {\n          var charCode = parseInt(strNum, isHex ? 16 : 10);\n          return String.fromCharCode(charCode);\n        } catch (_a) {\n          throw this._createError(_unknownEntityErrorMsg(this._cursor.getChars(start)), this._cursor.getSpan());\n        }\n      } else {\n        var nameStart = this._cursor.clone();\n\n        this._attemptCharCodeUntilFn(isNamedEntityEnd);\n\n        if (this._cursor.peek() != $SEMICOLON) {\n          this._cursor = nameStart;\n          return '&';\n        }\n\n        var name = this._cursor.getChars(nameStart);\n\n        this._cursor.advance();\n\n        var char = NAMED_ENTITIES[name];\n\n        if (!char) {\n          throw this._createError(_unknownEntityErrorMsg(name), this._cursor.getSpan(start));\n        }\n\n        return char;\n      }\n    }\n  }, {\n    key: \"_consumeRawText\",\n    value: function _consumeRawText(decodeEntities, endMarkerPredicate) {\n      this._beginToken(decodeEntities ? TokenType.ESCAPABLE_RAW_TEXT : TokenType.RAW_TEXT);\n\n      var parts = [];\n\n      while (true) {\n        var tagCloseStart = this._cursor.clone();\n\n        var foundEndMarker = endMarkerPredicate();\n        this._cursor = tagCloseStart;\n\n        if (foundEndMarker) {\n          break;\n        }\n\n        parts.push(this._readChar(decodeEntities));\n      }\n\n      return this._endToken([this._processCarriageReturns(parts.join(''))]);\n    }\n  }, {\n    key: \"_consumeComment\",\n    value: function _consumeComment(start) {\n      var _this127 = this;\n\n      this._beginToken(TokenType.COMMENT_START, start);\n\n      this._requireCharCode($MINUS);\n\n      this._endToken([]);\n\n      this._consumeRawText(false, function () {\n        return _this127._attemptStr('-->');\n      });\n\n      this._beginToken(TokenType.COMMENT_END);\n\n      this._requireStr('-->');\n\n      this._endToken([]);\n    }\n  }, {\n    key: \"_consumeCdata\",\n    value: function _consumeCdata(start) {\n      var _this128 = this;\n\n      this._beginToken(TokenType.CDATA_START, start);\n\n      this._requireStr('CDATA[');\n\n      this._endToken([]);\n\n      this._consumeRawText(false, function () {\n        return _this128._attemptStr(']]>');\n      });\n\n      this._beginToken(TokenType.CDATA_END);\n\n      this._requireStr(']]>');\n\n      this._endToken([]);\n    }\n  }, {\n    key: \"_consumeDocType\",\n    value: function _consumeDocType(start) {\n      this._beginToken(TokenType.DOC_TYPE, start);\n\n      var contentStart = this._cursor.clone();\n\n      this._attemptUntilChar($GT);\n\n      var content = this._cursor.getChars(contentStart);\n\n      this._cursor.advance();\n\n      this._endToken([content]);\n    }\n  }, {\n    key: \"_consumePrefixAndName\",\n    value: function _consumePrefixAndName() {\n      var nameOrPrefixStart = this._cursor.clone();\n\n      var prefix = '';\n\n      while (this._cursor.peek() !== $COLON && !isPrefixEnd(this._cursor.peek())) {\n        this._cursor.advance();\n      }\n\n      var nameStart;\n\n      if (this._cursor.peek() === $COLON) {\n        prefix = this._cursor.getChars(nameOrPrefixStart);\n\n        this._cursor.advance();\n\n        nameStart = this._cursor.clone();\n      } else {\n        nameStart = nameOrPrefixStart;\n      }\n\n      this._requireCharCodeUntilFn(isNameEnd, prefix === '' ? 0 : 1);\n\n      var name = this._cursor.getChars(nameStart);\n\n      return [prefix, name];\n    }\n  }, {\n    key: \"_consumeTagOpen\",\n    value: function _consumeTagOpen(start) {\n      var tagName;\n      var prefix;\n      var openTagToken;\n\n      try {\n        if (!isAsciiLetter(this._cursor.peek())) {\n          throw this._createError(_unexpectedCharacterErrorMsg(this._cursor.peek()), this._cursor.getSpan(start));\n        }\n\n        openTagToken = this._consumeTagOpenStart(start);\n        prefix = openTagToken.parts[0];\n        tagName = openTagToken.parts[1];\n\n        this._attemptCharCodeUntilFn(isNotWhitespace);\n\n        while (this._cursor.peek() !== $SLASH && this._cursor.peek() !== $GT && this._cursor.peek() !== $LT) {\n          this._consumeAttributeName();\n\n          this._attemptCharCodeUntilFn(isNotWhitespace);\n\n          if (this._attemptCharCode($EQ)) {\n            this._attemptCharCodeUntilFn(isNotWhitespace);\n\n            this._consumeAttributeValue();\n          }\n\n          this._attemptCharCodeUntilFn(isNotWhitespace);\n        }\n\n        this._consumeTagOpenEnd();\n      } catch (e) {\n        if (e instanceof _ControlFlowError) {\n          if (openTagToken) {\n            // We errored before we could close the opening tag, so it is incomplete.\n            openTagToken.type = TokenType.INCOMPLETE_TAG_OPEN;\n          } else {\n            // When the start tag is invalid, assume we want a \"<\" as text.\n            // Back to back text tokens are merged at the end.\n            this._beginToken(TokenType.TEXT, start);\n\n            this._endToken(['<']);\n          }\n\n          return;\n        }\n\n        throw e;\n      }\n\n      var contentTokenType = this._getTagDefinition(tagName).contentType;\n\n      if (contentTokenType === TagContentType.RAW_TEXT) {\n        this._consumeRawTextWithTagClose(prefix, tagName, false);\n      } else if (contentTokenType === TagContentType.ESCAPABLE_RAW_TEXT) {\n        this._consumeRawTextWithTagClose(prefix, tagName, true);\n      }\n    }\n  }, {\n    key: \"_consumeRawTextWithTagClose\",\n    value: function _consumeRawTextWithTagClose(prefix, tagName, decodeEntities) {\n      var _this129 = this;\n\n      var textToken = this._consumeRawText(decodeEntities, function () {\n        if (!_this129._attemptCharCode($LT)) return false;\n        if (!_this129._attemptCharCode($SLASH)) return false;\n\n        _this129._attemptCharCodeUntilFn(isNotWhitespace);\n\n        if (!_this129._attemptStrCaseInsensitive(tagName)) return false;\n\n        _this129._attemptCharCodeUntilFn(isNotWhitespace);\n\n        return _this129._attemptCharCode($GT);\n      });\n\n      this._beginToken(TokenType.TAG_CLOSE);\n\n      this._requireCharCodeUntilFn(function (code) {\n        return code === $GT;\n      }, 3);\n\n      this._cursor.advance(); // Consume the `>`\n\n\n      this._endToken([prefix, tagName]);\n    }\n  }, {\n    key: \"_consumeTagOpenStart\",\n    value: function _consumeTagOpenStart(start) {\n      this._beginToken(TokenType.TAG_OPEN_START, start);\n\n      var parts = this._consumePrefixAndName();\n\n      return this._endToken(parts);\n    }\n  }, {\n    key: \"_consumeAttributeName\",\n    value: function _consumeAttributeName() {\n      var attrNameStart = this._cursor.peek();\n\n      if (attrNameStart === $SQ || attrNameStart === $DQ) {\n        throw this._createError(_unexpectedCharacterErrorMsg(attrNameStart), this._cursor.getSpan());\n      }\n\n      this._beginToken(TokenType.ATTR_NAME);\n\n      var prefixAndName = this._consumePrefixAndName();\n\n      this._endToken(prefixAndName);\n    }\n  }, {\n    key: \"_consumeAttributeValue\",\n    value: function _consumeAttributeValue() {\n      var value;\n\n      if (this._cursor.peek() === $SQ || this._cursor.peek() === $DQ) {\n        this._beginToken(TokenType.ATTR_QUOTE);\n\n        var quoteChar = this._cursor.peek();\n\n        this._cursor.advance();\n\n        this._endToken([String.fromCodePoint(quoteChar)]);\n\n        this._beginToken(TokenType.ATTR_VALUE);\n\n        var parts = [];\n\n        while (this._cursor.peek() !== quoteChar) {\n          parts.push(this._readChar(true));\n        }\n\n        value = parts.join('');\n\n        this._endToken([this._processCarriageReturns(value)]);\n\n        this._beginToken(TokenType.ATTR_QUOTE);\n\n        this._cursor.advance();\n\n        this._endToken([String.fromCodePoint(quoteChar)]);\n      } else {\n        this._beginToken(TokenType.ATTR_VALUE);\n\n        var valueStart = this._cursor.clone();\n\n        this._requireCharCodeUntilFn(isNameEnd, 1);\n\n        value = this._cursor.getChars(valueStart);\n\n        this._endToken([this._processCarriageReturns(value)]);\n      }\n    }\n  }, {\n    key: \"_consumeTagOpenEnd\",\n    value: function _consumeTagOpenEnd() {\n      var tokenType = this._attemptCharCode($SLASH) ? TokenType.TAG_OPEN_END_VOID : TokenType.TAG_OPEN_END;\n\n      this._beginToken(tokenType);\n\n      this._requireCharCode($GT);\n\n      this._endToken([]);\n    }\n  }, {\n    key: \"_consumeTagClose\",\n    value: function _consumeTagClose(start) {\n      this._beginToken(TokenType.TAG_CLOSE, start);\n\n      this._attemptCharCodeUntilFn(isNotWhitespace);\n\n      var prefixAndName = this._consumePrefixAndName();\n\n      this._attemptCharCodeUntilFn(isNotWhitespace);\n\n      this._requireCharCode($GT);\n\n      this._endToken(prefixAndName);\n    }\n  }, {\n    key: \"_consumeExpansionFormStart\",\n    value: function _consumeExpansionFormStart() {\n      this._beginToken(TokenType.EXPANSION_FORM_START);\n\n      this._requireCharCode($LBRACE);\n\n      this._endToken([]);\n\n      this._expansionCaseStack.push(TokenType.EXPANSION_FORM_START);\n\n      this._beginToken(TokenType.RAW_TEXT);\n\n      var condition = this._readUntil($COMMA);\n\n      var normalizedCondition = this._processCarriageReturns(condition);\n\n      if (this._i18nNormalizeLineEndingsInICUs) {\n        // We explicitly want to normalize line endings for this text.\n        this._endToken([normalizedCondition]);\n      } else {\n        // We are not normalizing line endings.\n        var conditionToken = this._endToken([condition]);\n\n        if (normalizedCondition !== condition) {\n          this.nonNormalizedIcuExpressions.push(conditionToken);\n        }\n      }\n\n      this._requireCharCode($COMMA);\n\n      this._attemptCharCodeUntilFn(isNotWhitespace);\n\n      this._beginToken(TokenType.RAW_TEXT);\n\n      var type = this._readUntil($COMMA);\n\n      this._endToken([type]);\n\n      this._requireCharCode($COMMA);\n\n      this._attemptCharCodeUntilFn(isNotWhitespace);\n    }\n  }, {\n    key: \"_consumeExpansionCaseStart\",\n    value: function _consumeExpansionCaseStart() {\n      this._beginToken(TokenType.EXPANSION_CASE_VALUE);\n\n      var value = this._readUntil($LBRACE).trim();\n\n      this._endToken([value]);\n\n      this._attemptCharCodeUntilFn(isNotWhitespace);\n\n      this._beginToken(TokenType.EXPANSION_CASE_EXP_START);\n\n      this._requireCharCode($LBRACE);\n\n      this._endToken([]);\n\n      this._attemptCharCodeUntilFn(isNotWhitespace);\n\n      this._expansionCaseStack.push(TokenType.EXPANSION_CASE_EXP_START);\n    }\n  }, {\n    key: \"_consumeExpansionCaseEnd\",\n    value: function _consumeExpansionCaseEnd() {\n      this._beginToken(TokenType.EXPANSION_CASE_EXP_END);\n\n      this._requireCharCode($RBRACE);\n\n      this._endToken([]);\n\n      this._attemptCharCodeUntilFn(isNotWhitespace);\n\n      this._expansionCaseStack.pop();\n    }\n  }, {\n    key: \"_consumeExpansionFormEnd\",\n    value: function _consumeExpansionFormEnd() {\n      this._beginToken(TokenType.EXPANSION_FORM_END);\n\n      this._requireCharCode($RBRACE);\n\n      this._endToken([]);\n\n      this._expansionCaseStack.pop();\n    }\n  }, {\n    key: \"_consumeText\",\n    value: function _consumeText() {\n      var start = this._cursor.clone();\n\n      this._beginToken(TokenType.TEXT, start);\n\n      var parts = [];\n\n      do {\n        if (this._interpolationConfig && this._attemptStr(this._interpolationConfig.start)) {\n          parts.push(this._interpolationConfig.start);\n          this._inInterpolation = true;\n        } else if (this._interpolationConfig && this._inInterpolation && this._attemptStr(this._interpolationConfig.end)) {\n          parts.push(this._interpolationConfig.end);\n          this._inInterpolation = false;\n        } else {\n          parts.push(this._readChar(true));\n        }\n      } while (!this._isTextEnd());\n\n      this._endToken([this._processCarriageReturns(parts.join(''))]);\n    }\n  }, {\n    key: \"_isTextEnd\",\n    value: function _isTextEnd() {\n      if (this._cursor.peek() === $LT || this._cursor.peek() === $EOF) {\n        return true;\n      }\n\n      if (this._tokenizeIcu && !this._inInterpolation) {\n        if (this.isExpansionFormStart()) {\n          // start of an expansion form\n          return true;\n        }\n\n        if (this._cursor.peek() === $RBRACE && this._isInExpansionCase()) {\n          // end of and expansion case\n          return true;\n        }\n      }\n\n      return false;\n    }\n  }, {\n    key: \"_readUntil\",\n    value: function _readUntil(char) {\n      var start = this._cursor.clone();\n\n      this._attemptUntilChar(char);\n\n      return this._cursor.getChars(start);\n    }\n  }, {\n    key: \"_isInExpansionCase\",\n    value: function _isInExpansionCase() {\n      return this._expansionCaseStack.length > 0 && this._expansionCaseStack[this._expansionCaseStack.length - 1] === TokenType.EXPANSION_CASE_EXP_START;\n    }\n  }, {\n    key: \"_isInExpansionForm\",\n    value: function _isInExpansionForm() {\n      return this._expansionCaseStack.length > 0 && this._expansionCaseStack[this._expansionCaseStack.length - 1] === TokenType.EXPANSION_FORM_START;\n    }\n  }, {\n    key: \"isExpansionFormStart\",\n    value: function isExpansionFormStart() {\n      if (this._cursor.peek() !== $LBRACE) {\n        return false;\n      }\n\n      if (this._interpolationConfig) {\n        var _start3 = this._cursor.clone();\n\n        var isInterpolation = this._attemptStr(this._interpolationConfig.start);\n\n        this._cursor = _start3;\n        return !isInterpolation;\n      }\n\n      return true;\n    }\n  }]);\n\n  return _Tokenizer;\n}();\n\nfunction isNotWhitespace(code) {\n  return !isWhitespace(code) || code === $EOF;\n}\n\nfunction isNameEnd(code) {\n  return isWhitespace(code) || code === $GT || code === $LT || code === $SLASH || code === $SQ || code === $DQ || code === $EQ;\n}\n\nfunction isPrefixEnd(code) {\n  return (code < $a || $z < code) && (code < $A || $Z < code) && (code < $0 || code > $9);\n}\n\nfunction isDigitEntityEnd(code) {\n  return code == $SEMICOLON || code == $EOF || !isAsciiHexDigit(code);\n}\n\nfunction isNamedEntityEnd(code) {\n  return code == $SEMICOLON || code == $EOF || !isAsciiLetter(code);\n}\n\nfunction isExpansionCaseStart(peek) {\n  return peek !== $RBRACE;\n}\n\nfunction compareCharCodeCaseInsensitive(code1, code2) {\n  return toUpperCaseCharCode(code1) == toUpperCaseCharCode(code2);\n}\n\nfunction toUpperCaseCharCode(code) {\n  return code >= $a && code <= $z ? code - $a + $A : code;\n}\n\nfunction mergeTextTokens(srcTokens) {\n  var dstTokens = [];\n  var lastDstToken = undefined;\n\n  for (var i = 0; i < srcTokens.length; i++) {\n    var token = srcTokens[i];\n\n    if (lastDstToken && lastDstToken.type == TokenType.TEXT && token.type == TokenType.TEXT) {\n      lastDstToken.parts[0] += token.parts[0];\n      lastDstToken.sourceSpan.end = token.sourceSpan.end;\n    } else {\n      lastDstToken = token;\n      dstTokens.push(lastDstToken);\n    }\n  }\n\n  return dstTokens;\n}\n\nvar PlainCharacterCursor = /*#__PURE__*/function () {\n  function PlainCharacterCursor(fileOrCursor, range) {\n    _classCallCheck(this, PlainCharacterCursor);\n\n    if (fileOrCursor instanceof PlainCharacterCursor) {\n      this.file = fileOrCursor.file;\n      this.input = fileOrCursor.input;\n      this.end = fileOrCursor.end;\n      var state = fileOrCursor.state; // Note: avoid using `{...fileOrCursor.state}` here as that has a severe performance penalty.\n      // In ES5 bundles the object spread operator is translated into the `__assign` helper, which\n      // is not optimized by VMs as efficiently as a raw object literal. Since this constructor is\n      // called in tight loops, this difference matters.\n\n      this.state = {\n        peek: state.peek,\n        offset: state.offset,\n        line: state.line,\n        column: state.column\n      };\n    } else {\n      if (!range) {\n        throw new Error('Programming error: the range argument must be provided with a file argument.');\n      }\n\n      this.file = fileOrCursor;\n      this.input = fileOrCursor.content;\n      this.end = range.endPos;\n      this.state = {\n        peek: -1,\n        offset: range.startPos,\n        line: range.startLine,\n        column: range.startCol\n      };\n    }\n  }\n\n  _createClass(PlainCharacterCursor, [{\n    key: \"clone\",\n    value: function clone() {\n      return new PlainCharacterCursor(this);\n    }\n  }, {\n    key: \"peek\",\n    value: function peek() {\n      return this.state.peek;\n    }\n  }, {\n    key: \"charsLeft\",\n    value: function charsLeft() {\n      return this.end - this.state.offset;\n    }\n  }, {\n    key: \"diff\",\n    value: function diff(other) {\n      return this.state.offset - other.state.offset;\n    }\n  }, {\n    key: \"advance\",\n    value: function advance() {\n      this.advanceState(this.state);\n    }\n  }, {\n    key: \"init\",\n    value: function init() {\n      this.updatePeek(this.state);\n    }\n  }, {\n    key: \"getSpan\",\n    value: function getSpan(start, leadingTriviaCodePoints) {\n      start = start || this;\n      var fullStart = start;\n\n      if (leadingTriviaCodePoints) {\n        while (this.diff(start) > 0 && leadingTriviaCodePoints.indexOf(start.peek()) !== -1) {\n          if (fullStart === start) {\n            start = start.clone();\n          }\n\n          start.advance();\n        }\n      }\n\n      var startLocation = this.locationFromCursor(start);\n      var endLocation = this.locationFromCursor(this);\n      var fullStartLocation = fullStart !== start ? this.locationFromCursor(fullStart) : startLocation;\n      return new ParseSourceSpan(startLocation, endLocation, fullStartLocation);\n    }\n  }, {\n    key: \"getChars\",\n    value: function getChars(start) {\n      return this.input.substring(start.state.offset, this.state.offset);\n    }\n  }, {\n    key: \"charAt\",\n    value: function charAt(pos) {\n      return this.input.charCodeAt(pos);\n    }\n  }, {\n    key: \"advanceState\",\n    value: function advanceState(state) {\n      if (state.offset >= this.end) {\n        this.state = state;\n        throw new CursorError('Unexpected character \"EOF\"', this);\n      }\n\n      var currentChar = this.charAt(state.offset);\n\n      if (currentChar === $LF) {\n        state.line++;\n        state.column = 0;\n      } else if (!isNewLine(currentChar)) {\n        state.column++;\n      }\n\n      state.offset++;\n      this.updatePeek(state);\n    }\n  }, {\n    key: \"updatePeek\",\n    value: function updatePeek(state) {\n      state.peek = state.offset >= this.end ? $EOF : this.charAt(state.offset);\n    }\n  }, {\n    key: \"locationFromCursor\",\n    value: function locationFromCursor(cursor) {\n      return new ParseLocation(cursor.file, cursor.state.offset, cursor.state.line, cursor.state.column);\n    }\n  }]);\n\n  return PlainCharacterCursor;\n}();\n\nvar EscapedCharacterCursor = /*#__PURE__*/function (_PlainCharacterCursor) {\n  _inherits(EscapedCharacterCursor, _PlainCharacterCursor);\n\n  var _super86 = _createSuper(EscapedCharacterCursor);\n\n  function EscapedCharacterCursor(fileOrCursor, range) {\n    var _this130;\n\n    _classCallCheck(this, EscapedCharacterCursor);\n\n    if (fileOrCursor instanceof EscapedCharacterCursor) {\n      _this130 = _super86.call(this, fileOrCursor);\n      _this130.internalState = Object.assign({}, fileOrCursor.internalState);\n    } else {\n      _this130 = _super86.call(this, fileOrCursor, range);\n      _this130.internalState = _this130.state;\n    }\n\n    return _possibleConstructorReturn(_this130);\n  }\n\n  _createClass(EscapedCharacterCursor, [{\n    key: \"advance\",\n    value: function advance() {\n      this.state = this.internalState;\n\n      _get(_getPrototypeOf(EscapedCharacterCursor.prototype), \"advance\", this).call(this);\n\n      this.processEscapeSequence();\n    }\n  }, {\n    key: \"init\",\n    value: function init() {\n      _get(_getPrototypeOf(EscapedCharacterCursor.prototype), \"init\", this).call(this);\n\n      this.processEscapeSequence();\n    }\n  }, {\n    key: \"clone\",\n    value: function clone() {\n      return new EscapedCharacterCursor(this);\n    }\n  }, {\n    key: \"getChars\",\n    value: function getChars(start) {\n      var cursor = start.clone();\n      var chars = '';\n\n      while (cursor.internalState.offset < this.internalState.offset) {\n        chars += String.fromCodePoint(cursor.peek());\n        cursor.advance();\n      }\n\n      return chars;\n    }\n    /**\n     * Process the escape sequence that starts at the current position in the text.\n     *\n     * This method is called to ensure that `peek` has the unescaped value of escape sequences.\n     */\n\n  }, {\n    key: \"processEscapeSequence\",\n    value: function processEscapeSequence() {\n      var _this131 = this;\n\n      var peek = function peek() {\n        return _this131.internalState.peek;\n      };\n\n      if (peek() === $BACKSLASH) {\n        // We have hit an escape sequence so we need the internal state to become independent\n        // of the external state.\n        this.internalState = Object.assign({}, this.state); // Move past the backslash\n\n        this.advanceState(this.internalState); // First check for standard control char sequences\n\n        if (peek() === $n) {\n          this.state.peek = $LF;\n        } else if (peek() === $r) {\n          this.state.peek = $CR;\n        } else if (peek() === $v) {\n          this.state.peek = $VTAB;\n        } else if (peek() === $t) {\n          this.state.peek = $TAB;\n        } else if (peek() === $b) {\n          this.state.peek = $BSPACE;\n        } else if (peek() === $f) {\n          this.state.peek = $FF;\n        } // Now consider more complex sequences\n        else if (peek() === $u) {\n          // Unicode code-point sequence\n          this.advanceState(this.internalState); // advance past the `u` char\n\n          if (peek() === $LBRACE) {\n            // Variable length Unicode, e.g. `\\x{123}`\n            this.advanceState(this.internalState); // advance past the `{` char\n            // Advance past the variable number of hex digits until we hit a `}` char\n\n            var digitStart = this.clone();\n            var length = 0;\n\n            while (peek() !== $RBRACE) {\n              this.advanceState(this.internalState);\n              length++;\n            }\n\n            this.state.peek = this.decodeHexDigits(digitStart, length);\n          } else {\n            // Fixed length Unicode, e.g. `\\u1234`\n            var _digitStart = this.clone();\n\n            this.advanceState(this.internalState);\n            this.advanceState(this.internalState);\n            this.advanceState(this.internalState);\n            this.state.peek = this.decodeHexDigits(_digitStart, 4);\n          }\n        } else if (peek() === $x) {\n          // Hex char code, e.g. `\\x2F`\n          this.advanceState(this.internalState); // advance past the `x` char\n\n          var _digitStart2 = this.clone();\n\n          this.advanceState(this.internalState);\n          this.state.peek = this.decodeHexDigits(_digitStart2, 2);\n        } else if (isOctalDigit(peek())) {\n          // Octal char code, e.g. `\\012`,\n          var octal = '';\n          var _length = 0;\n          var previous = this.clone();\n\n          while (isOctalDigit(peek()) && _length < 3) {\n            previous = this.clone();\n            octal += String.fromCodePoint(peek());\n            this.advanceState(this.internalState);\n            _length++;\n          }\n\n          this.state.peek = parseInt(octal, 8); // Backup one char\n\n          this.internalState = previous.internalState;\n        } else if (isNewLine(this.internalState.peek)) {\n          // Line continuation `\\` followed by a new line\n          this.advanceState(this.internalState); // advance over the newline\n\n          this.state = this.internalState;\n        } else {\n          // If none of the `if` blocks were executed then we just have an escaped normal character.\n          // In that case we just, effectively, skip the backslash from the character.\n          this.state.peek = this.internalState.peek;\n        }\n      }\n    }\n  }, {\n    key: \"decodeHexDigits\",\n    value: function decodeHexDigits(start, length) {\n      var hex = this.input.substr(start.internalState.offset, length);\n      var charCode = parseInt(hex, 16);\n\n      if (!isNaN(charCode)) {\n        return charCode;\n      } else {\n        start.state = start.internalState;\n        throw new CursorError('Invalid hexadecimal escape sequence', start);\n      }\n    }\n  }]);\n\n  return EscapedCharacterCursor;\n}(PlainCharacterCursor);\n\nvar CursorError = /*#__PURE__*/_createClass(function CursorError(msg, cursor) {\n  _classCallCheck(this, CursorError);\n\n  this.msg = msg;\n  this.cursor = cursor;\n});\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar TreeError = /*#__PURE__*/function (_ParseError2) {\n  _inherits(TreeError, _ParseError2);\n\n  var _super87 = _createSuper(TreeError);\n\n  function TreeError(elementName, span, msg) {\n    var _this132;\n\n    _classCallCheck(this, TreeError);\n\n    _this132 = _super87.call(this, span, msg);\n    _this132.elementName = elementName;\n    return _this132;\n  }\n\n  _createClass(TreeError, null, [{\n    key: \"create\",\n    value: function create(elementName, span, msg) {\n      return new TreeError(elementName, span, msg);\n    }\n  }]);\n\n  return TreeError;\n}(ParseError);\n\nvar ParseTreeResult = /*#__PURE__*/_createClass(function ParseTreeResult(rootNodes, errors) {\n  _classCallCheck(this, ParseTreeResult);\n\n  this.rootNodes = rootNodes;\n  this.errors = errors;\n});\n\nvar Parser = /*#__PURE__*/function () {\n  function Parser(getTagDefinition) {\n    _classCallCheck(this, Parser);\n\n    this.getTagDefinition = getTagDefinition;\n  }\n\n  _createClass(Parser, [{\n    key: \"parse\",\n    value: function parse(source, url, options) {\n      var tokenizeResult = tokenize(source, url, this.getTagDefinition, options);\n      var parser = new _TreeBuilder(tokenizeResult.tokens, this.getTagDefinition);\n      parser.build();\n      return new ParseTreeResult(parser.rootNodes, tokenizeResult.errors.concat(parser.errors));\n    }\n  }]);\n\n  return Parser;\n}();\n\nvar _TreeBuilder = /*#__PURE__*/function () {\n  function _TreeBuilder(tokens, getTagDefinition) {\n    _classCallCheck(this, _TreeBuilder);\n\n    this.tokens = tokens;\n    this.getTagDefinition = getTagDefinition;\n    this._index = -1;\n    this._elementStack = [];\n    this.rootNodes = [];\n    this.errors = [];\n\n    this._advance();\n  }\n\n  _createClass(_TreeBuilder, [{\n    key: \"build\",\n    value: function build() {\n      while (this._peek.type !== TokenType.EOF) {\n        if (this._peek.type === TokenType.TAG_OPEN_START || this._peek.type === TokenType.INCOMPLETE_TAG_OPEN) {\n          this._consumeStartTag(this._advance());\n        } else if (this._peek.type === TokenType.TAG_CLOSE) {\n          this._consumeEndTag(this._advance());\n        } else if (this._peek.type === TokenType.CDATA_START) {\n          this._closeVoidElement();\n\n          this._consumeCdata(this._advance());\n        } else if (this._peek.type === TokenType.COMMENT_START) {\n          this._closeVoidElement();\n\n          this._consumeComment(this._advance());\n        } else if (this._peek.type === TokenType.TEXT || this._peek.type === TokenType.RAW_TEXT || this._peek.type === TokenType.ESCAPABLE_RAW_TEXT) {\n          this._closeVoidElement();\n\n          this._consumeText(this._advance());\n        } else if (this._peek.type === TokenType.EXPANSION_FORM_START) {\n          this._consumeExpansion(this._advance());\n        } else {\n          // Skip all other tokens...\n          this._advance();\n        }\n      }\n    }\n  }, {\n    key: \"_advance\",\n    value: function _advance() {\n      var prev = this._peek;\n\n      if (this._index < this.tokens.length - 1) {\n        // Note: there is always an EOF token at the end\n        this._index++;\n      }\n\n      this._peek = this.tokens[this._index];\n      return prev;\n    }\n  }, {\n    key: \"_advanceIf\",\n    value: function _advanceIf(type) {\n      if (this._peek.type === type) {\n        return this._advance();\n      }\n\n      return null;\n    }\n  }, {\n    key: \"_consumeCdata\",\n    value: function _consumeCdata(_startToken) {\n      this._consumeText(this._advance());\n\n      this._advanceIf(TokenType.CDATA_END);\n    }\n  }, {\n    key: \"_consumeComment\",\n    value: function _consumeComment(token) {\n      var text = this._advanceIf(TokenType.RAW_TEXT);\n\n      this._advanceIf(TokenType.COMMENT_END);\n\n      var value = text != null ? text.parts[0].trim() : null;\n\n      this._addToParent(new Comment(value, token.sourceSpan));\n    }\n  }, {\n    key: \"_consumeExpansion\",\n    value: function _consumeExpansion(token) {\n      var switchValue = this._advance();\n\n      var type = this._advance();\n\n      var cases = []; // read =\n\n      while (this._peek.type === TokenType.EXPANSION_CASE_VALUE) {\n        var expCase = this._parseExpansionCase();\n\n        if (!expCase) return; // error\n\n        cases.push(expCase);\n      } // read the final }\n\n\n      if (this._peek.type !== TokenType.EXPANSION_FORM_END) {\n        this.errors.push(TreeError.create(null, this._peek.sourceSpan, \"Invalid ICU message. Missing '}'.\"));\n        return;\n      }\n\n      var sourceSpan = new ParseSourceSpan(token.sourceSpan.start, this._peek.sourceSpan.end, token.sourceSpan.fullStart);\n\n      this._addToParent(new Expansion(switchValue.parts[0], type.parts[0], cases, sourceSpan, switchValue.sourceSpan));\n\n      this._advance();\n    }\n  }, {\n    key: \"_parseExpansionCase\",\n    value: function _parseExpansionCase() {\n      var value = this._advance(); // read {\n\n\n      if (this._peek.type !== TokenType.EXPANSION_CASE_EXP_START) {\n        this.errors.push(TreeError.create(null, this._peek.sourceSpan, \"Invalid ICU message. Missing '{'.\"));\n        return null;\n      } // read until }\n\n\n      var start = this._advance();\n\n      var exp = this._collectExpansionExpTokens(start);\n\n      if (!exp) return null;\n\n      var end = this._advance();\n\n      exp.push(new Token(TokenType.EOF, [], end.sourceSpan)); // parse everything in between { and }\n\n      var expansionCaseParser = new _TreeBuilder(exp, this.getTagDefinition);\n      expansionCaseParser.build();\n\n      if (expansionCaseParser.errors.length > 0) {\n        this.errors = this.errors.concat(expansionCaseParser.errors);\n        return null;\n      }\n\n      var sourceSpan = new ParseSourceSpan(value.sourceSpan.start, end.sourceSpan.end, value.sourceSpan.fullStart);\n      var expSourceSpan = new ParseSourceSpan(start.sourceSpan.start, end.sourceSpan.end, start.sourceSpan.fullStart);\n      return new ExpansionCase(value.parts[0], expansionCaseParser.rootNodes, sourceSpan, value.sourceSpan, expSourceSpan);\n    }\n  }, {\n    key: \"_collectExpansionExpTokens\",\n    value: function _collectExpansionExpTokens(start) {\n      var exp = [];\n      var expansionFormStack = [TokenType.EXPANSION_CASE_EXP_START];\n\n      while (true) {\n        if (this._peek.type === TokenType.EXPANSION_FORM_START || this._peek.type === TokenType.EXPANSION_CASE_EXP_START) {\n          expansionFormStack.push(this._peek.type);\n        }\n\n        if (this._peek.type === TokenType.EXPANSION_CASE_EXP_END) {\n          if (lastOnStack(expansionFormStack, TokenType.EXPANSION_CASE_EXP_START)) {\n            expansionFormStack.pop();\n            if (expansionFormStack.length == 0) return exp;\n          } else {\n            this.errors.push(TreeError.create(null, start.sourceSpan, \"Invalid ICU message. Missing '}'.\"));\n            return null;\n          }\n        }\n\n        if (this._peek.type === TokenType.EXPANSION_FORM_END) {\n          if (lastOnStack(expansionFormStack, TokenType.EXPANSION_FORM_START)) {\n            expansionFormStack.pop();\n          } else {\n            this.errors.push(TreeError.create(null, start.sourceSpan, \"Invalid ICU message. Missing '}'.\"));\n            return null;\n          }\n        }\n\n        if (this._peek.type === TokenType.EOF) {\n          this.errors.push(TreeError.create(null, start.sourceSpan, \"Invalid ICU message. Missing '}'.\"));\n          return null;\n        }\n\n        exp.push(this._advance());\n      }\n    }\n  }, {\n    key: \"_consumeText\",\n    value: function _consumeText(token) {\n      var text = token.parts[0];\n\n      if (text.length > 0 && text[0] == '\\n') {\n        var parent = this._getParentElement();\n\n        if (parent != null && parent.children.length == 0 && this.getTagDefinition(parent.name).ignoreFirstLf) {\n          text = text.substring(1);\n        }\n      }\n\n      if (text.length > 0) {\n        this._addToParent(new Text$3(text, token.sourceSpan));\n      }\n    }\n  }, {\n    key: \"_closeVoidElement\",\n    value: function _closeVoidElement() {\n      var el = this._getParentElement();\n\n      if (el && this.getTagDefinition(el.name).isVoid) {\n        this._elementStack.pop();\n      }\n    }\n  }, {\n    key: \"_consumeStartTag\",\n    value: function _consumeStartTag(startTagToken) {\n      var _startTagToken$parts = _slicedToArray(startTagToken.parts, 2),\n          prefix = _startTagToken$parts[0],\n          name = _startTagToken$parts[1];\n\n      var attrs = [];\n\n      while (this._peek.type === TokenType.ATTR_NAME) {\n        attrs.push(this._consumeAttr(this._advance()));\n      }\n\n      var fullName = this._getElementFullName(prefix, name, this._getParentElement());\n\n      var selfClosing = false; // Note: There could have been a tokenizer error\n      // so that we don't get a token for the end tag...\n\n      if (this._peek.type === TokenType.TAG_OPEN_END_VOID) {\n        this._advance();\n\n        selfClosing = true;\n        var tagDef = this.getTagDefinition(fullName);\n\n        if (!(tagDef.canSelfClose || getNsPrefix(fullName) !== null || tagDef.isVoid)) {\n          this.errors.push(TreeError.create(fullName, startTagToken.sourceSpan, \"Only void and foreign elements can be self closed \\\"\".concat(startTagToken.parts[1], \"\\\"\")));\n        }\n      } else if (this._peek.type === TokenType.TAG_OPEN_END) {\n        this._advance();\n\n        selfClosing = false;\n      }\n\n      var end = this._peek.sourceSpan.start;\n      var span = new ParseSourceSpan(startTagToken.sourceSpan.start, end, startTagToken.sourceSpan.fullStart); // Create a separate `startSpan` because `span` will be modified when there is an `end` span.\n\n      var startSpan = new ParseSourceSpan(startTagToken.sourceSpan.start, end, startTagToken.sourceSpan.fullStart);\n      var el = new Element$1(fullName, attrs, [], span, startSpan, undefined);\n\n      this._pushElement(el);\n\n      if (selfClosing) {\n        // Elements that are self-closed have their `endSourceSpan` set to the full span, as the\n        // element start tag also represents the end tag.\n        this._popElement(fullName, span);\n      } else if (startTagToken.type === TokenType.INCOMPLETE_TAG_OPEN) {\n        // We already know the opening tag is not complete, so it is unlikely it has a corresponding\n        // close tag. Let's optimistically parse it as a full element and emit an error.\n        this._popElement(fullName, null);\n\n        this.errors.push(TreeError.create(fullName, span, \"Opening tag \\\"\".concat(fullName, \"\\\" not terminated.\")));\n      }\n    }\n  }, {\n    key: \"_pushElement\",\n    value: function _pushElement(el) {\n      var parentEl = this._getParentElement();\n\n      if (parentEl && this.getTagDefinition(parentEl.name).isClosedByChild(el.name)) {\n        this._elementStack.pop();\n      }\n\n      this._addToParent(el);\n\n      this._elementStack.push(el);\n    }\n  }, {\n    key: \"_consumeEndTag\",\n    value: function _consumeEndTag(endTagToken) {\n      var fullName = this._getElementFullName(endTagToken.parts[0], endTagToken.parts[1], this._getParentElement());\n\n      if (this.getTagDefinition(fullName).isVoid) {\n        this.errors.push(TreeError.create(fullName, endTagToken.sourceSpan, \"Void elements do not have end tags \\\"\".concat(endTagToken.parts[1], \"\\\"\")));\n      } else if (!this._popElement(fullName, endTagToken.sourceSpan)) {\n        var errMsg = \"Unexpected closing tag \\\"\".concat(fullName, \"\\\". It may happen when the tag has already been closed by another tag. For more info see https://www.w3.org/TR/html5/syntax.html#closing-elements-that-have-implied-end-tags\");\n        this.errors.push(TreeError.create(fullName, endTagToken.sourceSpan, errMsg));\n      }\n    }\n    /**\n     * Closes the nearest element with the tag name `fullName` in the parse tree.\n     * `endSourceSpan` is the span of the closing tag, or null if the element does\n     * not have a closing tag (for example, this happens when an incomplete\n     * opening tag is recovered).\n     */\n\n  }, {\n    key: \"_popElement\",\n    value: function _popElement(fullName, endSourceSpan) {\n      for (var stackIndex = this._elementStack.length - 1; stackIndex >= 0; stackIndex--) {\n        var el = this._elementStack[stackIndex];\n\n        if (el.name == fullName) {\n          // Record the parse span with the element that is being closed. Any elements that are\n          // removed from the element stack at this point are closed implicitly, so they won't get\n          // an end source span (as there is no explicit closing element).\n          el.endSourceSpan = endSourceSpan;\n          el.sourceSpan.end = endSourceSpan !== null ? endSourceSpan.end : el.sourceSpan.end;\n\n          this._elementStack.splice(stackIndex, this._elementStack.length - stackIndex);\n\n          return true;\n        }\n\n        if (!this.getTagDefinition(el.name).closedByParent) {\n          return false;\n        }\n      }\n\n      return false;\n    }\n  }, {\n    key: \"_consumeAttr\",\n    value: function _consumeAttr(attrName) {\n      var fullName = mergeNsAndName(attrName.parts[0], attrName.parts[1]);\n      var end = attrName.sourceSpan.end;\n      var value = '';\n      var valueSpan = undefined;\n\n      if (this._peek.type === TokenType.ATTR_QUOTE) {\n        this._advance();\n      }\n\n      if (this._peek.type === TokenType.ATTR_VALUE) {\n        var valueToken = this._advance();\n\n        value = valueToken.parts[0];\n        end = valueToken.sourceSpan.end;\n        valueSpan = valueToken.sourceSpan;\n      }\n\n      if (this._peek.type === TokenType.ATTR_QUOTE) {\n        var quoteToken = this._advance();\n\n        end = quoteToken.sourceSpan.end;\n      }\n\n      return new Attribute(fullName, value, new ParseSourceSpan(attrName.sourceSpan.start, end, attrName.sourceSpan.fullStart), valueSpan);\n    }\n  }, {\n    key: \"_getParentElement\",\n    value: function _getParentElement() {\n      return this._elementStack.length > 0 ? this._elementStack[this._elementStack.length - 1] : null;\n    }\n  }, {\n    key: \"_addToParent\",\n    value: function _addToParent(node) {\n      var parent = this._getParentElement();\n\n      if (parent != null) {\n        parent.children.push(node);\n      } else {\n        this.rootNodes.push(node);\n      }\n    }\n  }, {\n    key: \"_getElementFullName\",\n    value: function _getElementFullName(prefix, localName, parentElement) {\n      if (prefix === '') {\n        prefix = this.getTagDefinition(localName).implicitNamespacePrefix || '';\n\n        if (prefix === '' && parentElement != null) {\n          var parentTagName = splitNsName(parentElement.name)[1];\n          var parentTagDefinition = this.getTagDefinition(parentTagName);\n\n          if (!parentTagDefinition.preventNamespaceInheritance) {\n            prefix = getNsPrefix(parentElement.name);\n          }\n        }\n      }\n\n      return mergeNsAndName(prefix, localName);\n    }\n  }]);\n\n  return _TreeBuilder;\n}();\n\nfunction lastOnStack(stack, element) {\n  return stack.length > 0 && stack[stack.length - 1] === element;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar HtmlParser = /*#__PURE__*/function (_Parser) {\n  _inherits(HtmlParser, _Parser);\n\n  var _super88 = _createSuper(HtmlParser);\n\n  function HtmlParser() {\n    _classCallCheck(this, HtmlParser);\n\n    return _super88.call(this, getHtmlTagDefinition);\n  }\n\n  _createClass(HtmlParser, [{\n    key: \"parse\",\n    value: function parse(source, url, options) {\n      return _get(_getPrototypeOf(HtmlParser.prototype), \"parse\", this).call(this, source, url, options);\n    }\n  }]);\n\n  return HtmlParser;\n}(Parser);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar PRESERVE_WS_ATTR_NAME = 'ngPreserveWhitespaces';\nvar SKIP_WS_TRIM_TAGS = new Set(['pre', 'template', 'textarea', 'script', 'style']); // Equivalent to \\s with \\u00a0 (non-breaking space) excluded.\n// Based on https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp\n\nvar WS_CHARS = \" \\f\\n\\r\\t\\x0B\\u1680\\u180E\\u2000-\\u200A\\u2028\\u2029\\u202F\\u205F\\u3000\\uFEFF\";\nvar NO_WS_REGEXP = new RegExp(\"[^\".concat(WS_CHARS, \"]\"));\nvar WS_REPLACE_REGEXP = new RegExp(\"[\".concat(WS_CHARS, \"]{2,}\"), 'g');\n\nfunction hasPreserveWhitespacesAttr(attrs) {\n  return attrs.some(function (attr) {\n    return attr.name === PRESERVE_WS_ATTR_NAME;\n  });\n}\n/**\n * Angular Dart introduced &ngsp; as a placeholder for non-removable space, see:\n * https://github.com/dart-lang/angular/blob/0bb611387d29d65b5af7f9d2515ab571fd3fbee4/_tests/test/compiler/preserve_whitespace_test.dart#L25-L32\n * In Angular Dart &ngsp; is converted to the 0xE500 PUA (Private Use Areas) unicode character\n * and later on replaced by a space. We are re-implementing the same idea here.\n */\n\n\nfunction replaceNgsp(value) {\n  // lexer is replacing the &ngsp; pseudo-entity with NGSP_UNICODE\n  return value.replace(new RegExp(NGSP_UNICODE, 'g'), ' ');\n}\n/**\n * This visitor can walk HTML parse tree and remove / trim text nodes using the following rules:\n * - consider spaces, tabs and new lines as whitespace characters;\n * - drop text nodes consisting of whitespace characters only;\n * - for all other text nodes replace consecutive whitespace characters with one space;\n * - convert &ngsp; pseudo-entity to a single space;\n *\n * Removal and trimming of whitespaces have positive performance impact (less code to generate\n * while compiling templates, faster view creation). At the same time it can be \"destructive\"\n * in some cases (whitespaces can influence layout). Because of the potential of breaking layout\n * this visitor is not activated by default in Angular 5 and people need to explicitly opt-in for\n * whitespace removal. The default option for whitespace removal will be revisited in Angular 6\n * and might be changed to \"on\" by default.\n */\n\n\nvar WhitespaceVisitor = /*#__PURE__*/function () {\n  function WhitespaceVisitor() {\n    _classCallCheck(this, WhitespaceVisitor);\n  }\n\n  _createClass(WhitespaceVisitor, [{\n    key: \"visitElement\",\n    value: function visitElement(element, context) {\n      if (SKIP_WS_TRIM_TAGS.has(element.name) || hasPreserveWhitespacesAttr(element.attrs)) {\n        // don't descent into elements where we need to preserve whitespaces\n        // but still visit all attributes to eliminate one used as a market to preserve WS\n        return new Element$1(element.name, visitAll$1(this, element.attrs), element.children, element.sourceSpan, element.startSourceSpan, element.endSourceSpan, element.i18n);\n      }\n\n      return new Element$1(element.name, element.attrs, visitAllWithSiblings(this, element.children), element.sourceSpan, element.startSourceSpan, element.endSourceSpan, element.i18n);\n    }\n  }, {\n    key: \"visitAttribute\",\n    value: function visitAttribute(attribute, context) {\n      return attribute.name !== PRESERVE_WS_ATTR_NAME ? attribute : null;\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text, context) {\n      var isNotBlank = text.value.match(NO_WS_REGEXP);\n      var hasExpansionSibling = context && (context.prev instanceof Expansion || context.next instanceof Expansion);\n\n      if (isNotBlank || hasExpansionSibling) {\n        return new Text$3(replaceNgsp(text.value).replace(WS_REPLACE_REGEXP, ' '), text.sourceSpan, text.i18n);\n      }\n\n      return null;\n    }\n  }, {\n    key: \"visitComment\",\n    value: function visitComment(comment, context) {\n      return comment;\n    }\n  }, {\n    key: \"visitExpansion\",\n    value: function visitExpansion(expansion, context) {\n      return expansion;\n    }\n  }, {\n    key: \"visitExpansionCase\",\n    value: function visitExpansionCase(expansionCase, context) {\n      return expansionCase;\n    }\n  }]);\n\n  return WhitespaceVisitor;\n}();\n\nfunction removeWhitespaces(htmlAstWithErrors) {\n  return new ParseTreeResult(visitAll$1(new WhitespaceVisitor(), htmlAstWithErrors.rootNodes), htmlAstWithErrors.errors);\n}\n\nfunction visitAllWithSiblings(visitor, nodes) {\n  var result = [];\n  nodes.forEach(function (ast, i) {\n    var context = {\n      prev: nodes[i - 1],\n      next: nodes[i + 1]\n    };\n    var astResult = ast.visit(visitor, context);\n\n    if (astResult) {\n      result.push(astResult);\n    }\n  });\n  return result;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// http://cldr.unicode.org/index/cldr-spec/plural-rules\n\n\nvar PLURAL_CASES = ['zero', 'one', 'two', 'few', 'many', 'other'];\n/**\n * Expands special forms into elements.\n *\n * For example,\n *\n * ```\n * { messages.length, plural,\n *   =0 {zero}\n *   =1 {one}\n *   other {more than one}\n * }\n * ```\n *\n * will be expanded into\n *\n * ```\n * <ng-container [ngPlural]=\"messages.length\">\n *   <ng-template ngPluralCase=\"=0\">zero</ng-template>\n *   <ng-template ngPluralCase=\"=1\">one</ng-template>\n *   <ng-template ngPluralCase=\"other\">more than one</ng-template>\n * </ng-container>\n * ```\n */\n\nfunction expandNodes(nodes) {\n  var expander = new _Expander();\n  return new ExpansionResult(visitAll$1(expander, nodes), expander.isExpanded, expander.errors);\n}\n\nvar ExpansionResult = /*#__PURE__*/_createClass(function ExpansionResult(nodes, expanded, errors) {\n  _classCallCheck(this, ExpansionResult);\n\n  this.nodes = nodes;\n  this.expanded = expanded;\n  this.errors = errors;\n});\n\nvar ExpansionError = /*#__PURE__*/function (_ParseError3) {\n  _inherits(ExpansionError, _ParseError3);\n\n  var _super89 = _createSuper(ExpansionError);\n\n  function ExpansionError(span, errorMsg) {\n    _classCallCheck(this, ExpansionError);\n\n    return _super89.call(this, span, errorMsg);\n  }\n\n  return _createClass(ExpansionError);\n}(ParseError);\n/**\n * Expand expansion forms (plural, select) to directives\n *\n * @internal\n */\n\n\nvar _Expander = /*#__PURE__*/function () {\n  function _Expander() {\n    _classCallCheck(this, _Expander);\n\n    this.isExpanded = false;\n    this.errors = [];\n  }\n\n  _createClass(_Expander, [{\n    key: \"visitElement\",\n    value: function visitElement(element, context) {\n      return new Element$1(element.name, element.attrs, visitAll$1(this, element.children), element.sourceSpan, element.startSourceSpan, element.endSourceSpan);\n    }\n  }, {\n    key: \"visitAttribute\",\n    value: function visitAttribute(attribute, context) {\n      return attribute;\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text, context) {\n      return text;\n    }\n  }, {\n    key: \"visitComment\",\n    value: function visitComment(comment, context) {\n      return comment;\n    }\n  }, {\n    key: \"visitExpansion\",\n    value: function visitExpansion(icu, context) {\n      this.isExpanded = true;\n      return icu.type == 'plural' ? _expandPluralForm(icu, this.errors) : _expandDefaultForm(icu, this.errors);\n    }\n  }, {\n    key: \"visitExpansionCase\",\n    value: function visitExpansionCase(icuCase, context) {\n      throw new Error('Should not be reached');\n    }\n  }]);\n\n  return _Expander;\n}(); // Plural forms are expanded to `NgPlural` and `NgPluralCase`s\n\n\nfunction _expandPluralForm(ast, errors) {\n  var children = ast.cases.map(function (c) {\n    if (PLURAL_CASES.indexOf(c.value) == -1 && !c.value.match(/^=\\d+$/)) {\n      errors.push(new ExpansionError(c.valueSourceSpan, \"Plural cases should be \\\"=<number>\\\" or one of \".concat(PLURAL_CASES.join(', '))));\n    }\n\n    var expansionResult = expandNodes(c.expression);\n    errors.push.apply(errors, _toConsumableArray(expansionResult.errors));\n    return new Element$1(\"ng-template\", [new Attribute('ngPluralCase', \"\".concat(c.value), c.valueSourceSpan)], expansionResult.nodes, c.sourceSpan, c.sourceSpan, c.sourceSpan);\n  });\n  var switchAttr = new Attribute('[ngPlural]', ast.switchValue, ast.switchValueSourceSpan);\n  return new Element$1('ng-container', [switchAttr], children, ast.sourceSpan, ast.sourceSpan, ast.sourceSpan);\n} // ICU messages (excluding plural form) are expanded to `NgSwitch`  and `NgSwitchCase`s\n\n\nfunction _expandDefaultForm(ast, errors) {\n  var children = ast.cases.map(function (c) {\n    var expansionResult = expandNodes(c.expression);\n    errors.push.apply(errors, _toConsumableArray(expansionResult.errors));\n\n    if (c.value === 'other') {\n      // other is the default case when no values match\n      return new Element$1(\"ng-template\", [new Attribute('ngSwitchDefault', '', c.valueSourceSpan)], expansionResult.nodes, c.sourceSpan, c.sourceSpan, c.sourceSpan);\n    }\n\n    return new Element$1(\"ng-template\", [new Attribute('ngSwitchCase', \"\".concat(c.value), c.valueSourceSpan)], expansionResult.nodes, c.sourceSpan, c.sourceSpan, c.sourceSpan);\n  });\n  var switchAttr = new Attribute('[ngSwitch]', ast.switchValue, ast.switchValueSourceSpan);\n  return new Element$1('ng-container', [switchAttr], children, ast.sourceSpan, ast.sourceSpan, ast.sourceSpan);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A segment of text within the template.\n */\n\n\nvar TextAst = /*#__PURE__*/function () {\n  function TextAst(value, ngContentIndex, sourceSpan) {\n    _classCallCheck(this, TextAst);\n\n    this.value = value;\n    this.ngContentIndex = ngContentIndex;\n    this.sourceSpan = sourceSpan;\n  }\n\n  _createClass(TextAst, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitText(this, context);\n    }\n  }]);\n\n  return TextAst;\n}();\n/**\n * A bound expression within the text of a template.\n */\n\n\nvar BoundTextAst = /*#__PURE__*/function () {\n  function BoundTextAst(value, ngContentIndex, sourceSpan) {\n    _classCallCheck(this, BoundTextAst);\n\n    this.value = value;\n    this.ngContentIndex = ngContentIndex;\n    this.sourceSpan = sourceSpan;\n  }\n\n  _createClass(BoundTextAst, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitBoundText(this, context);\n    }\n  }]);\n\n  return BoundTextAst;\n}();\n/**\n * A plain attribute on an element.\n */\n\n\nvar AttrAst = /*#__PURE__*/function () {\n  function AttrAst(name, value, sourceSpan) {\n    _classCallCheck(this, AttrAst);\n\n    this.name = name;\n    this.value = value;\n    this.sourceSpan = sourceSpan;\n  }\n\n  _createClass(AttrAst, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitAttr(this, context);\n    }\n  }]);\n\n  return AttrAst;\n}();\n\nvar BoundPropertyMapping = (_BoundPropertyMapping = {}, _defineProperty(_BoundPropertyMapping, 4\n/* Animation */\n, 4), _defineProperty(_BoundPropertyMapping, 1\n/* Attribute */\n, 1), _defineProperty(_BoundPropertyMapping, 2\n/* Class */\n, 2), _defineProperty(_BoundPropertyMapping, 0\n/* Property */\n, 0), _defineProperty(_BoundPropertyMapping, 3\n/* Style */\n, 3), _BoundPropertyMapping);\n/**\n * A binding for an element property (e.g. `[property]=\"expression\"`) or an animation trigger (e.g.\n * `[@trigger]=\"stateExp\"`)\n */\n\nvar BoundElementPropertyAst = /*#__PURE__*/function () {\n  function BoundElementPropertyAst(name, type, securityContext, value, unit, sourceSpan) {\n    _classCallCheck(this, BoundElementPropertyAst);\n\n    this.name = name;\n    this.type = type;\n    this.securityContext = securityContext;\n    this.value = value;\n    this.unit = unit;\n    this.sourceSpan = sourceSpan;\n    this.isAnimation = this.type === 4\n    /* Animation */\n    ;\n  }\n\n  _createClass(BoundElementPropertyAst, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitElementProperty(this, context);\n    }\n  }], [{\n    key: \"fromBoundProperty\",\n    value: function fromBoundProperty(prop) {\n      var type = BoundPropertyMapping[prop.type];\n      return new BoundElementPropertyAst(prop.name, type, prop.securityContext, prop.value, prop.unit, prop.sourceSpan);\n    }\n  }]);\n\n  return BoundElementPropertyAst;\n}();\n/**\n * A binding for an element event (e.g. `(event)=\"handler()\"`) or an animation trigger event (e.g.\n * `(@trigger.phase)=\"callback($event)\"`).\n */\n\n\nvar BoundEventAst = /*#__PURE__*/function () {\n  function BoundEventAst(name, target, phase, handler, sourceSpan, handlerSpan) {\n    _classCallCheck(this, BoundEventAst);\n\n    this.name = name;\n    this.target = target;\n    this.phase = phase;\n    this.handler = handler;\n    this.sourceSpan = sourceSpan;\n    this.handlerSpan = handlerSpan;\n    this.fullName = BoundEventAst.calcFullName(this.name, this.target, this.phase);\n    this.isAnimation = !!this.phase;\n  }\n\n  _createClass(BoundEventAst, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitEvent(this, context);\n    }\n  }], [{\n    key: \"calcFullName\",\n    value: function calcFullName(name, target, phase) {\n      if (target) {\n        return \"\".concat(target, \":\").concat(name);\n      }\n\n      if (phase) {\n        return \"@\".concat(name, \".\").concat(phase);\n      }\n\n      return name;\n    }\n  }, {\n    key: \"fromParsedEvent\",\n    value: function fromParsedEvent(event) {\n      var target = event.type === 0\n      /* Regular */\n      ? event.targetOrPhase : null;\n      var phase = event.type === 1\n      /* Animation */\n      ? event.targetOrPhase : null;\n      return new BoundEventAst(event.name, target, phase, event.handler, event.sourceSpan, event.handlerSpan);\n    }\n  }]);\n\n  return BoundEventAst;\n}();\n/**\n * A reference declaration on an element (e.g. `let someName=\"expression\"`).\n */\n\n\nvar ReferenceAst = /*#__PURE__*/function () {\n  function ReferenceAst(name, value, originalValue, sourceSpan) {\n    _classCallCheck(this, ReferenceAst);\n\n    this.name = name;\n    this.value = value;\n    this.originalValue = originalValue;\n    this.sourceSpan = sourceSpan;\n  }\n\n  _createClass(ReferenceAst, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitReference(this, context);\n    }\n  }]);\n\n  return ReferenceAst;\n}();\n/**\n * A variable declaration on a <ng-template> (e.g. `var-someName=\"someLocalName\"`).\n */\n\n\nvar VariableAst = /*#__PURE__*/function () {\n  function VariableAst(name, value, sourceSpan, valueSpan) {\n    _classCallCheck(this, VariableAst);\n\n    this.name = name;\n    this.value = value;\n    this.sourceSpan = sourceSpan;\n    this.valueSpan = valueSpan;\n  }\n\n  _createClass(VariableAst, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitVariable(this, context);\n    }\n  }], [{\n    key: \"fromParsedVariable\",\n    value: function fromParsedVariable(v) {\n      return new VariableAst(v.name, v.value, v.sourceSpan, v.valueSpan);\n    }\n  }]);\n\n  return VariableAst;\n}();\n/**\n * An element declaration in a template.\n */\n\n\nvar ElementAst = /*#__PURE__*/function () {\n  function ElementAst(name, attrs, inputs, outputs, references, directives, providers, hasViewContainer, queryMatches, children, ngContentIndex, sourceSpan, endSourceSpan) {\n    _classCallCheck(this, ElementAst);\n\n    this.name = name;\n    this.attrs = attrs;\n    this.inputs = inputs;\n    this.outputs = outputs;\n    this.references = references;\n    this.directives = directives;\n    this.providers = providers;\n    this.hasViewContainer = hasViewContainer;\n    this.queryMatches = queryMatches;\n    this.children = children;\n    this.ngContentIndex = ngContentIndex;\n    this.sourceSpan = sourceSpan;\n    this.endSourceSpan = endSourceSpan;\n  }\n\n  _createClass(ElementAst, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitElement(this, context);\n    }\n  }]);\n\n  return ElementAst;\n}();\n/**\n * A `<ng-template>` element included in an Angular template.\n */\n\n\nvar EmbeddedTemplateAst = /*#__PURE__*/function () {\n  function EmbeddedTemplateAst(attrs, outputs, references, variables, directives, providers, hasViewContainer, queryMatches, children, ngContentIndex, sourceSpan) {\n    _classCallCheck(this, EmbeddedTemplateAst);\n\n    this.attrs = attrs;\n    this.outputs = outputs;\n    this.references = references;\n    this.variables = variables;\n    this.directives = directives;\n    this.providers = providers;\n    this.hasViewContainer = hasViewContainer;\n    this.queryMatches = queryMatches;\n    this.children = children;\n    this.ngContentIndex = ngContentIndex;\n    this.sourceSpan = sourceSpan;\n  }\n\n  _createClass(EmbeddedTemplateAst, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitEmbeddedTemplate(this, context);\n    }\n  }]);\n\n  return EmbeddedTemplateAst;\n}();\n/**\n * A directive property with a bound value (e.g. `*ngIf=\"condition\").\n */\n\n\nvar BoundDirectivePropertyAst = /*#__PURE__*/function () {\n  function BoundDirectivePropertyAst(directiveName, templateName, value, sourceSpan) {\n    _classCallCheck(this, BoundDirectivePropertyAst);\n\n    this.directiveName = directiveName;\n    this.templateName = templateName;\n    this.value = value;\n    this.sourceSpan = sourceSpan;\n  }\n\n  _createClass(BoundDirectivePropertyAst, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitDirectiveProperty(this, context);\n    }\n  }]);\n\n  return BoundDirectivePropertyAst;\n}();\n/**\n * A directive declared on an element.\n */\n\n\nvar DirectiveAst = /*#__PURE__*/function () {\n  function DirectiveAst(directive, inputs, hostProperties, hostEvents, contentQueryStartId, sourceSpan) {\n    _classCallCheck(this, DirectiveAst);\n\n    this.directive = directive;\n    this.inputs = inputs;\n    this.hostProperties = hostProperties;\n    this.hostEvents = hostEvents;\n    this.contentQueryStartId = contentQueryStartId;\n    this.sourceSpan = sourceSpan;\n  }\n\n  _createClass(DirectiveAst, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitDirective(this, context);\n    }\n  }]);\n\n  return DirectiveAst;\n}();\n/**\n * A provider declared on an element\n */\n\n\nvar ProviderAst = /*#__PURE__*/function () {\n  function ProviderAst(token, multiProvider, eager, providers, providerType, lifecycleHooks, sourceSpan, isModule) {\n    _classCallCheck(this, ProviderAst);\n\n    this.token = token;\n    this.multiProvider = multiProvider;\n    this.eager = eager;\n    this.providers = providers;\n    this.providerType = providerType;\n    this.lifecycleHooks = lifecycleHooks;\n    this.sourceSpan = sourceSpan;\n    this.isModule = isModule;\n  }\n\n  _createClass(ProviderAst, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      // No visit method in the visitor for now...\n      return null;\n    }\n  }]);\n\n  return ProviderAst;\n}();\n\nvar ProviderAstType;\n\n(function (ProviderAstType) {\n  ProviderAstType[ProviderAstType[\"PublicService\"] = 0] = \"PublicService\";\n  ProviderAstType[ProviderAstType[\"PrivateService\"] = 1] = \"PrivateService\";\n  ProviderAstType[ProviderAstType[\"Component\"] = 2] = \"Component\";\n  ProviderAstType[ProviderAstType[\"Directive\"] = 3] = \"Directive\";\n  ProviderAstType[ProviderAstType[\"Builtin\"] = 4] = \"Builtin\";\n})(ProviderAstType || (ProviderAstType = {}));\n/**\n * Position where content is to be projected (instance of `<ng-content>` in a template).\n */\n\n\nvar NgContentAst = /*#__PURE__*/function () {\n  function NgContentAst(index, ngContentIndex, sourceSpan) {\n    _classCallCheck(this, NgContentAst);\n\n    this.index = index;\n    this.ngContentIndex = ngContentIndex;\n    this.sourceSpan = sourceSpan;\n  }\n\n  _createClass(NgContentAst, [{\n    key: \"visit\",\n    value: function visit(visitor, context) {\n      return visitor.visitNgContent(this, context);\n    }\n  }]);\n\n  return NgContentAst;\n}();\n/**\n * A visitor that accepts each node but doesn't do anything. It is intended to be used\n * as the base class for a visitor that is only interested in a subset of the node types.\n */\n\n\nvar NullTemplateVisitor = /*#__PURE__*/function () {\n  function NullTemplateVisitor() {\n    _classCallCheck(this, NullTemplateVisitor);\n  }\n\n  _createClass(NullTemplateVisitor, [{\n    key: \"visitNgContent\",\n    value: function visitNgContent(ast, context) {}\n  }, {\n    key: \"visitEmbeddedTemplate\",\n    value: function visitEmbeddedTemplate(ast, context) {}\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(ast, context) {}\n  }, {\n    key: \"visitReference\",\n    value: function visitReference(ast, context) {}\n  }, {\n    key: \"visitVariable\",\n    value: function visitVariable(ast, context) {}\n  }, {\n    key: \"visitEvent\",\n    value: function visitEvent(ast, context) {}\n  }, {\n    key: \"visitElementProperty\",\n    value: function visitElementProperty(ast, context) {}\n  }, {\n    key: \"visitAttr\",\n    value: function visitAttr(ast, context) {}\n  }, {\n    key: \"visitBoundText\",\n    value: function visitBoundText(ast, context) {}\n  }, {\n    key: \"visitText\",\n    value: function visitText(ast, context) {}\n  }, {\n    key: \"visitDirective\",\n    value: function visitDirective(ast, context) {}\n  }, {\n    key: \"visitDirectiveProperty\",\n    value: function visitDirectiveProperty(ast, context) {}\n  }]);\n\n  return NullTemplateVisitor;\n}();\n/**\n * Base class that can be used to build a visitor that visits each node\n * in an template ast recursively.\n */\n\n\nvar RecursiveTemplateAstVisitor = /*#__PURE__*/function (_NullTemplateVisitor) {\n  _inherits(RecursiveTemplateAstVisitor, _NullTemplateVisitor);\n\n  var _super90 = _createSuper(RecursiveTemplateAstVisitor);\n\n  function RecursiveTemplateAstVisitor() {\n    _classCallCheck(this, RecursiveTemplateAstVisitor);\n\n    return _super90.call(this);\n  } // Nodes with children\n\n\n  _createClass(RecursiveTemplateAstVisitor, [{\n    key: \"visitEmbeddedTemplate\",\n    value: function visitEmbeddedTemplate(ast, context) {\n      return this.visitChildren(context, function (visit) {\n        visit(ast.attrs);\n        visit(ast.references);\n        visit(ast.variables);\n        visit(ast.directives);\n        visit(ast.providers);\n        visit(ast.children);\n      });\n    }\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(ast, context) {\n      return this.visitChildren(context, function (visit) {\n        visit(ast.attrs);\n        visit(ast.inputs);\n        visit(ast.outputs);\n        visit(ast.references);\n        visit(ast.directives);\n        visit(ast.providers);\n        visit(ast.children);\n      });\n    }\n  }, {\n    key: \"visitDirective\",\n    value: function visitDirective(ast, context) {\n      return this.visitChildren(context, function (visit) {\n        visit(ast.inputs);\n        visit(ast.hostProperties);\n        visit(ast.hostEvents);\n      });\n    }\n  }, {\n    key: \"visitChildren\",\n    value: function visitChildren(context, cb) {\n      var results = [];\n      var t = this;\n\n      function visit(children) {\n        if (children && children.length) results.push(templateVisitAll(t, children, context));\n      }\n\n      cb(visit);\n      return Array.prototype.concat.apply([], results);\n    }\n  }]);\n\n  return RecursiveTemplateAstVisitor;\n}(NullTemplateVisitor);\n/**\n * Visit every node in a list of {@link TemplateAst}s with the given {@link TemplateAstVisitor}.\n */\n\n\nfunction templateVisitAll(visitor, asts) {\n  var context = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;\n  var result = [];\n  var visit = visitor.visit ? function (ast) {\n    return visitor.visit(ast, context) || ast.visit(visitor, context);\n  } : function (ast) {\n    return ast.visit(visitor, context);\n  };\n  asts.forEach(function (ast) {\n    var astResult = visit(ast);\n\n    if (astResult) {\n      result.push(astResult);\n    }\n  });\n  return result;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ProviderError = /*#__PURE__*/function (_ParseError4) {\n  _inherits(ProviderError, _ParseError4);\n\n  var _super91 = _createSuper(ProviderError);\n\n  function ProviderError(message, span) {\n    _classCallCheck(this, ProviderError);\n\n    return _super91.call(this, span, message);\n  }\n\n  return _createClass(ProviderError);\n}(ParseError);\n\nvar ProviderViewContext = /*#__PURE__*/_createClass(function ProviderViewContext(reflector, component) {\n  var _this133 = this;\n\n  _classCallCheck(this, ProviderViewContext);\n\n  this.reflector = reflector;\n  this.component = component;\n  this.errors = [];\n  this.viewQueries = _getViewQueries(component);\n  this.viewProviders = new Map();\n  component.viewProviders.forEach(function (provider) {\n    if (_this133.viewProviders.get(tokenReference(provider.token)) == null) {\n      _this133.viewProviders.set(tokenReference(provider.token), true);\n    }\n  });\n});\n\nvar ProviderElementContext = /*#__PURE__*/function () {\n  function ProviderElementContext(viewContext, _parent, _isViewRoot, _directiveAsts, attrs, refs, isTemplate, contentQueryStartId, _sourceSpan) {\n    var _this134 = this;\n\n    _classCallCheck(this, ProviderElementContext);\n\n    this.viewContext = viewContext;\n    this._parent = _parent;\n    this._isViewRoot = _isViewRoot;\n    this._directiveAsts = _directiveAsts;\n    this._sourceSpan = _sourceSpan;\n    this._transformedProviders = new Map();\n    this._seenProviders = new Map();\n    this._queriedTokens = new Map();\n    this.transformedHasViewContainer = false;\n    this._attrs = {};\n    attrs.forEach(function (attrAst) {\n      return _this134._attrs[attrAst.name] = attrAst.value;\n    });\n\n    var directivesMeta = _directiveAsts.map(function (directiveAst) {\n      return directiveAst.directive;\n    });\n\n    this._allProviders = _resolveProvidersFromDirectives(directivesMeta, _sourceSpan, viewContext.errors);\n    this._contentQueries = _getContentQueries(contentQueryStartId, directivesMeta);\n    Array.from(this._allProviders.values()).forEach(function (provider) {\n      _this134._addQueryReadsTo(provider.token, provider.token, _this134._queriedTokens);\n    });\n\n    if (isTemplate) {\n      var templateRefId = createTokenForExternalReference(this.viewContext.reflector, Identifiers.TemplateRef);\n\n      this._addQueryReadsTo(templateRefId, templateRefId, this._queriedTokens);\n    }\n\n    refs.forEach(function (refAst) {\n      var defaultQueryValue = refAst.value || createTokenForExternalReference(_this134.viewContext.reflector, Identifiers.ElementRef);\n\n      _this134._addQueryReadsTo({\n        value: refAst.name\n      }, defaultQueryValue, _this134._queriedTokens);\n    });\n\n    if (this._queriedTokens.get(this.viewContext.reflector.resolveExternalReference(Identifiers.ViewContainerRef))) {\n      this.transformedHasViewContainer = true;\n    } // create the providers that we know are eager first\n\n\n    Array.from(this._allProviders.values()).forEach(function (provider) {\n      var eager = provider.eager || _this134._queriedTokens.get(tokenReference(provider.token));\n\n      if (eager) {\n        _this134._getOrCreateLocalProvider(provider.providerType, provider.token, true);\n      }\n    });\n  }\n\n  _createClass(ProviderElementContext, [{\n    key: \"afterElement\",\n    value: function afterElement() {\n      var _this135 = this;\n\n      // collect lazy providers\n      Array.from(this._allProviders.values()).forEach(function (provider) {\n        _this135._getOrCreateLocalProvider(provider.providerType, provider.token, false);\n      });\n    }\n  }, {\n    key: \"transformProviders\",\n    get: function get() {\n      // Note: Maps keep their insertion order.\n      var lazyProviders = [];\n      var eagerProviders = [];\n\n      this._transformedProviders.forEach(function (provider) {\n        if (provider.eager) {\n          eagerProviders.push(provider);\n        } else {\n          lazyProviders.push(provider);\n        }\n      });\n\n      return lazyProviders.concat(eagerProviders);\n    }\n  }, {\n    key: \"transformedDirectiveAsts\",\n    get: function get() {\n      var sortedProviderTypes = this.transformProviders.map(function (provider) {\n        return provider.token.identifier;\n      });\n\n      var sortedDirectives = this._directiveAsts.slice();\n\n      sortedDirectives.sort(function (dir1, dir2) {\n        return sortedProviderTypes.indexOf(dir1.directive.type) - sortedProviderTypes.indexOf(dir2.directive.type);\n      });\n      return sortedDirectives;\n    }\n  }, {\n    key: \"queryMatches\",\n    get: function get() {\n      var allMatches = [];\n\n      this._queriedTokens.forEach(function (matches) {\n        allMatches.push.apply(allMatches, _toConsumableArray(matches));\n      });\n\n      return allMatches;\n    }\n  }, {\n    key: \"_addQueryReadsTo\",\n    value: function _addQueryReadsTo(token, defaultValue, queryReadTokens) {\n      this._getQueriesFor(token).forEach(function (query) {\n        var queryValue = query.meta.read || defaultValue;\n        var tokenRef = tokenReference(queryValue);\n        var queryMatches = queryReadTokens.get(tokenRef);\n\n        if (!queryMatches) {\n          queryMatches = [];\n          queryReadTokens.set(tokenRef, queryMatches);\n        }\n\n        queryMatches.push({\n          queryId: query.queryId,\n          value: queryValue\n        });\n      });\n    }\n  }, {\n    key: \"_getQueriesFor\",\n    value: function _getQueriesFor(token) {\n      var result = [];\n      var currentEl = this;\n      var distance = 0;\n      var queries;\n\n      while (currentEl !== null) {\n        queries = currentEl._contentQueries.get(tokenReference(token));\n\n        if (queries) {\n          result.push.apply(result, _toConsumableArray(queries.filter(function (query) {\n            return query.meta.descendants || distance <= 1;\n          })));\n        }\n\n        if (currentEl._directiveAsts.length > 0) {\n          distance++;\n        }\n\n        currentEl = currentEl._parent;\n      }\n\n      queries = this.viewContext.viewQueries.get(tokenReference(token));\n\n      if (queries) {\n        result.push.apply(result, _toConsumableArray(queries));\n      }\n\n      return result;\n    }\n  }, {\n    key: \"_getOrCreateLocalProvider\",\n    value: function _getOrCreateLocalProvider(requestingProviderType, token, eager) {\n      var _this136 = this;\n\n      var resolvedProvider = this._allProviders.get(tokenReference(token));\n\n      if (!resolvedProvider || (requestingProviderType === ProviderAstType.Directive || requestingProviderType === ProviderAstType.PublicService) && resolvedProvider.providerType === ProviderAstType.PrivateService || (requestingProviderType === ProviderAstType.PrivateService || requestingProviderType === ProviderAstType.PublicService) && resolvedProvider.providerType === ProviderAstType.Builtin) {\n        return null;\n      }\n\n      var transformedProviderAst = this._transformedProviders.get(tokenReference(token));\n\n      if (transformedProviderAst) {\n        return transformedProviderAst;\n      }\n\n      if (this._seenProviders.get(tokenReference(token)) != null) {\n        this.viewContext.errors.push(new ProviderError(\"Cannot instantiate cyclic dependency! \".concat(tokenName(token)), this._sourceSpan));\n        return null;\n      }\n\n      this._seenProviders.set(tokenReference(token), true);\n\n      var transformedProviders = resolvedProvider.providers.map(function (provider) {\n        var transformedUseValue = provider.useValue;\n        var transformedUseExisting = provider.useExisting;\n        var transformedDeps = undefined;\n\n        if (provider.useExisting != null) {\n          var existingDiDep = _this136._getDependency(resolvedProvider.providerType, {\n            token: provider.useExisting\n          }, eager);\n\n          if (existingDiDep.token != null) {\n            transformedUseExisting = existingDiDep.token;\n          } else {\n            transformedUseExisting = null;\n            transformedUseValue = existingDiDep.value;\n          }\n        } else if (provider.useFactory) {\n          var deps = provider.deps || provider.useFactory.diDeps;\n          transformedDeps = deps.map(function (dep) {\n            return _this136._getDependency(resolvedProvider.providerType, dep, eager);\n          });\n        } else if (provider.useClass) {\n          var _deps = provider.deps || provider.useClass.diDeps;\n\n          transformedDeps = _deps.map(function (dep) {\n            return _this136._getDependency(resolvedProvider.providerType, dep, eager);\n          });\n        }\n\n        return _transformProvider(provider, {\n          useExisting: transformedUseExisting,\n          useValue: transformedUseValue,\n          deps: transformedDeps\n        });\n      });\n      transformedProviderAst = _transformProviderAst(resolvedProvider, {\n        eager: eager,\n        providers: transformedProviders\n      });\n\n      this._transformedProviders.set(tokenReference(token), transformedProviderAst);\n\n      return transformedProviderAst;\n    }\n  }, {\n    key: \"_getLocalDependency\",\n    value: function _getLocalDependency(requestingProviderType, dep) {\n      var eager = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n\n      if (dep.isAttribute) {\n        var attrValue = this._attrs[dep.token.value];\n        return {\n          isValue: true,\n          value: attrValue == null ? null : attrValue\n        };\n      }\n\n      if (dep.token != null) {\n        // access builtints\n        if (requestingProviderType === ProviderAstType.Directive || requestingProviderType === ProviderAstType.Component) {\n          if (tokenReference(dep.token) === this.viewContext.reflector.resolveExternalReference(Identifiers.Renderer) || tokenReference(dep.token) === this.viewContext.reflector.resolveExternalReference(Identifiers.ElementRef) || tokenReference(dep.token) === this.viewContext.reflector.resolveExternalReference(Identifiers.ChangeDetectorRef) || tokenReference(dep.token) === this.viewContext.reflector.resolveExternalReference(Identifiers.TemplateRef)) {\n            return dep;\n          }\n\n          if (tokenReference(dep.token) === this.viewContext.reflector.resolveExternalReference(Identifiers.ViewContainerRef)) {\n            this.transformedHasViewContainer = true;\n          }\n        } // access the injector\n\n\n        if (tokenReference(dep.token) === this.viewContext.reflector.resolveExternalReference(Identifiers.Injector)) {\n          return dep;\n        } // access providers\n\n\n        if (this._getOrCreateLocalProvider(requestingProviderType, dep.token, eager) != null) {\n          return dep;\n        }\n      }\n\n      return null;\n    }\n  }, {\n    key: \"_getDependency\",\n    value: function _getDependency(requestingProviderType, dep) {\n      var eager = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n      var currElement = this;\n      var currEager = eager;\n      var result = null;\n\n      if (!dep.isSkipSelf) {\n        result = this._getLocalDependency(requestingProviderType, dep, eager);\n      }\n\n      if (dep.isSelf) {\n        if (!result && dep.isOptional) {\n          result = {\n            isValue: true,\n            value: null\n          };\n        }\n      } else {\n        // check parent elements\n        while (!result && currElement._parent) {\n          var prevElement = currElement;\n          currElement = currElement._parent;\n\n          if (prevElement._isViewRoot) {\n            currEager = false;\n          }\n\n          result = currElement._getLocalDependency(ProviderAstType.PublicService, dep, currEager);\n        } // check @Host restriction\n\n\n        if (!result) {\n          if (!dep.isHost || this.viewContext.component.isHost || this.viewContext.component.type.reference === tokenReference(dep.token) || this.viewContext.viewProviders.get(tokenReference(dep.token)) != null) {\n            result = dep;\n          } else {\n            result = dep.isOptional ? {\n              isValue: true,\n              value: null\n            } : null;\n          }\n        }\n      }\n\n      if (!result) {\n        this.viewContext.errors.push(new ProviderError(\"No provider for \".concat(tokenName(dep.token)), this._sourceSpan));\n      }\n\n      return result;\n    }\n  }]);\n\n  return ProviderElementContext;\n}();\n\nvar NgModuleProviderAnalyzer = /*#__PURE__*/function () {\n  function NgModuleProviderAnalyzer(reflector, ngModule, extraProviders, sourceSpan) {\n    var _this137 = this;\n\n    _classCallCheck(this, NgModuleProviderAnalyzer);\n\n    this.reflector = reflector;\n    this._transformedProviders = new Map();\n    this._seenProviders = new Map();\n    this._errors = [];\n    this._allProviders = new Map();\n    ngModule.transitiveModule.modules.forEach(function (ngModuleType) {\n      var ngModuleProvider = {\n        token: {\n          identifier: ngModuleType\n        },\n        useClass: ngModuleType\n      };\n\n      _resolveProviders([ngModuleProvider], ProviderAstType.PublicService, true, sourceSpan, _this137._errors, _this137._allProviders,\n      /* isModule */\n      true);\n    });\n\n    _resolveProviders(ngModule.transitiveModule.providers.map(function (entry) {\n      return entry.provider;\n    }).concat(extraProviders), ProviderAstType.PublicService, false, sourceSpan, this._errors, this._allProviders,\n    /* isModule */\n    false);\n  }\n\n  _createClass(NgModuleProviderAnalyzer, [{\n    key: \"parse\",\n    value: function parse() {\n      var _this138 = this;\n\n      Array.from(this._allProviders.values()).forEach(function (provider) {\n        _this138._getOrCreateLocalProvider(provider.token, provider.eager);\n      });\n\n      if (this._errors.length > 0) {\n        var errorString = this._errors.join('\\n');\n\n        throw new Error(\"Provider parse errors:\\n\".concat(errorString));\n      } // Note: Maps keep their insertion order.\n\n\n      var lazyProviders = [];\n      var eagerProviders = [];\n\n      this._transformedProviders.forEach(function (provider) {\n        if (provider.eager) {\n          eagerProviders.push(provider);\n        } else {\n          lazyProviders.push(provider);\n        }\n      });\n\n      return lazyProviders.concat(eagerProviders);\n    }\n  }, {\n    key: \"_getOrCreateLocalProvider\",\n    value: function _getOrCreateLocalProvider(token, eager) {\n      var _this139 = this;\n\n      var resolvedProvider = this._allProviders.get(tokenReference(token));\n\n      if (!resolvedProvider) {\n        return null;\n      }\n\n      var transformedProviderAst = this._transformedProviders.get(tokenReference(token));\n\n      if (transformedProviderAst) {\n        return transformedProviderAst;\n      }\n\n      if (this._seenProviders.get(tokenReference(token)) != null) {\n        this._errors.push(new ProviderError(\"Cannot instantiate cyclic dependency! \".concat(tokenName(token)), resolvedProvider.sourceSpan));\n\n        return null;\n      }\n\n      this._seenProviders.set(tokenReference(token), true);\n\n      var transformedProviders = resolvedProvider.providers.map(function (provider) {\n        var transformedUseValue = provider.useValue;\n        var transformedUseExisting = provider.useExisting;\n        var transformedDeps = undefined;\n\n        if (provider.useExisting != null) {\n          var existingDiDep = _this139._getDependency({\n            token: provider.useExisting\n          }, eager, resolvedProvider.sourceSpan);\n\n          if (existingDiDep.token != null) {\n            transformedUseExisting = existingDiDep.token;\n          } else {\n            transformedUseExisting = null;\n            transformedUseValue = existingDiDep.value;\n          }\n        } else if (provider.useFactory) {\n          var deps = provider.deps || provider.useFactory.diDeps;\n          transformedDeps = deps.map(function (dep) {\n            return _this139._getDependency(dep, eager, resolvedProvider.sourceSpan);\n          });\n        } else if (provider.useClass) {\n          var _deps2 = provider.deps || provider.useClass.diDeps;\n\n          transformedDeps = _deps2.map(function (dep) {\n            return _this139._getDependency(dep, eager, resolvedProvider.sourceSpan);\n          });\n        }\n\n        return _transformProvider(provider, {\n          useExisting: transformedUseExisting,\n          useValue: transformedUseValue,\n          deps: transformedDeps\n        });\n      });\n      transformedProviderAst = _transformProviderAst(resolvedProvider, {\n        eager: eager,\n        providers: transformedProviders\n      });\n\n      this._transformedProviders.set(tokenReference(token), transformedProviderAst);\n\n      return transformedProviderAst;\n    }\n  }, {\n    key: \"_getDependency\",\n    value: function _getDependency(dep) {\n      var eager = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n      var requestorSourceSpan = arguments.length > 2 ? arguments[2] : undefined;\n      var foundLocal = false;\n\n      if (!dep.isSkipSelf && dep.token != null) {\n        // access the injector\n        if (tokenReference(dep.token) === this.reflector.resolveExternalReference(Identifiers.Injector) || tokenReference(dep.token) === this.reflector.resolveExternalReference(Identifiers.ComponentFactoryResolver)) {\n          foundLocal = true; // access providers\n        } else if (this._getOrCreateLocalProvider(dep.token, eager) != null) {\n          foundLocal = true;\n        }\n      }\n\n      return dep;\n    }\n  }]);\n\n  return NgModuleProviderAnalyzer;\n}();\n\nfunction _transformProvider(provider, _ref11) {\n  var useExisting = _ref11.useExisting,\n      useValue = _ref11.useValue,\n      deps = _ref11.deps;\n  return {\n    token: provider.token,\n    useClass: provider.useClass,\n    useExisting: useExisting,\n    useFactory: provider.useFactory,\n    useValue: useValue,\n    deps: deps,\n    multi: provider.multi\n  };\n}\n\nfunction _transformProviderAst(provider, _ref12) {\n  var eager = _ref12.eager,\n      providers = _ref12.providers;\n  return new ProviderAst(provider.token, provider.multiProvider, provider.eager || eager, providers, provider.providerType, provider.lifecycleHooks, provider.sourceSpan, provider.isModule);\n}\n\nfunction _resolveProvidersFromDirectives(directives, sourceSpan, targetErrors) {\n  var providersByToken = new Map();\n  directives.forEach(function (directive) {\n    var dirProvider = {\n      token: {\n        identifier: directive.type\n      },\n      useClass: directive.type\n    };\n\n    _resolveProviders([dirProvider], directive.isComponent ? ProviderAstType.Component : ProviderAstType.Directive, true, sourceSpan, targetErrors, providersByToken,\n    /* isModule */\n    false);\n  }); // Note: directives need to be able to overwrite providers of a component!\n\n  var directivesWithComponentFirst = directives.filter(function (dir) {\n    return dir.isComponent;\n  }).concat(directives.filter(function (dir) {\n    return !dir.isComponent;\n  }));\n  directivesWithComponentFirst.forEach(function (directive) {\n    _resolveProviders(directive.providers, ProviderAstType.PublicService, false, sourceSpan, targetErrors, providersByToken,\n    /* isModule */\n    false);\n\n    _resolveProviders(directive.viewProviders, ProviderAstType.PrivateService, false, sourceSpan, targetErrors, providersByToken,\n    /* isModule */\n    false);\n  });\n  return providersByToken;\n}\n\nfunction _resolveProviders(providers, providerType, eager, sourceSpan, targetErrors, targetProvidersByToken, isModule) {\n  providers.forEach(function (provider) {\n    var resolvedProvider = targetProvidersByToken.get(tokenReference(provider.token));\n\n    if (resolvedProvider != null && !!resolvedProvider.multiProvider !== !!provider.multi) {\n      targetErrors.push(new ProviderError(\"Mixing multi and non multi provider is not possible for token \".concat(tokenName(resolvedProvider.token)), sourceSpan));\n    }\n\n    if (!resolvedProvider) {\n      var lifecycleHooks = provider.token.identifier && provider.token.identifier.lifecycleHooks ? provider.token.identifier.lifecycleHooks : [];\n      var isUseValue = !(provider.useClass || provider.useExisting || provider.useFactory);\n      resolvedProvider = new ProviderAst(provider.token, !!provider.multi, eager || isUseValue, [provider], providerType, lifecycleHooks, sourceSpan, isModule);\n      targetProvidersByToken.set(tokenReference(provider.token), resolvedProvider);\n    } else {\n      if (!provider.multi) {\n        resolvedProvider.providers.length = 0;\n      }\n\n      resolvedProvider.providers.push(provider);\n    }\n  });\n}\n\nfunction _getViewQueries(component) {\n  // Note: queries start with id 1 so we can use the number in a Bloom filter!\n  var viewQueryId = 1;\n  var viewQueries = new Map();\n\n  if (component.viewQueries) {\n    component.viewQueries.forEach(function (query) {\n      return _addQueryToTokenMap(viewQueries, {\n        meta: query,\n        queryId: viewQueryId++\n      });\n    });\n  }\n\n  return viewQueries;\n}\n\nfunction _getContentQueries(contentQueryStartId, directives) {\n  var contentQueryId = contentQueryStartId;\n  var contentQueries = new Map();\n  directives.forEach(function (directive, directiveIndex) {\n    if (directive.queries) {\n      directive.queries.forEach(function (query) {\n        return _addQueryToTokenMap(contentQueries, {\n          meta: query,\n          queryId: contentQueryId++\n        });\n      });\n    }\n  });\n  return contentQueries;\n}\n\nfunction _addQueryToTokenMap(map, query) {\n  query.meta.selectors.forEach(function (token) {\n    var entry = map.get(tokenReference(token));\n\n    if (!entry) {\n      entry = [];\n      map.set(tokenReference(token), entry);\n    }\n\n    entry.push(query);\n  });\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar StyleWithImports = /*#__PURE__*/_createClass(function StyleWithImports(style, styleUrls) {\n  _classCallCheck(this, StyleWithImports);\n\n  this.style = style;\n  this.styleUrls = styleUrls;\n});\n\nfunction isStyleUrlResolvable(url) {\n  if (url == null || url.length === 0 || url[0] == '/') return false;\n  var schemeMatch = url.match(URL_WITH_SCHEMA_REGEXP);\n  return schemeMatch === null || schemeMatch[1] == 'package' || schemeMatch[1] == 'asset';\n}\n/**\n * Rewrites stylesheets by resolving and removing the @import urls that\n * are either relative or don't have a `package:` scheme\n */\n\n\nfunction extractStyleUrls(resolver, baseUrl, cssText) {\n  var foundUrls = [];\n  var modifiedCssText = cssText.replace(CSS_STRIPPABLE_COMMENT_REGEXP, '').replace(CSS_IMPORT_REGEXP, function () {\n    var url = (arguments.length <= 1 ? undefined : arguments[1]) || (arguments.length <= 2 ? undefined : arguments[2]);\n\n    if (!isStyleUrlResolvable(url)) {\n      // Do not attempt to resolve non-package absolute URLs with URI\n      // scheme\n      return arguments.length <= 0 ? undefined : arguments[0];\n    }\n\n    foundUrls.push(resolver.resolve(baseUrl, url));\n    return '';\n  });\n  return new StyleWithImports(modifiedCssText, foundUrls);\n}\n\nvar CSS_IMPORT_REGEXP = /@import\\s+(?:url\\()?\\s*(?:(?:['\"]([^'\"]*))|([^;\\)\\s]*))[^;]*;?/g;\nvar CSS_STRIPPABLE_COMMENT_REGEXP = /\\/\\*(?!#\\s*(?:sourceURL|sourceMappingURL)=)[\\s\\S]+?\\*\\//g;\nvar URL_WITH_SCHEMA_REGEXP = /^([^:/?#]+):/;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar PROPERTY_PARTS_SEPARATOR = '.';\nvar ATTRIBUTE_PREFIX = 'attr';\nvar CLASS_PREFIX = 'class';\nvar STYLE_PREFIX = 'style';\nvar TEMPLATE_ATTR_PREFIX = '*';\nvar ANIMATE_PROP_PREFIX = 'animate-';\n/**\n * Parses bindings in templates and in the directive host area.\n */\n\nvar BindingParser = /*#__PURE__*/function () {\n  function BindingParser(_exprParser, _interpolationConfig, _schemaRegistry, pipes, errors) {\n    _classCallCheck(this, BindingParser);\n\n    this._exprParser = _exprParser;\n    this._interpolationConfig = _interpolationConfig;\n    this._schemaRegistry = _schemaRegistry;\n    this.errors = errors;\n    this.pipesByName = null;\n    this._usedPipes = new Map(); // When the `pipes` parameter is `null`, do not check for used pipes\n    // This is used in IVY when we might not know the available pipes at compile time\n\n    if (pipes) {\n      var pipesByName = new Map();\n      pipes.forEach(function (pipe) {\n        return pipesByName.set(pipe.name, pipe);\n      });\n      this.pipesByName = pipesByName;\n    }\n  }\n\n  _createClass(BindingParser, [{\n    key: \"interpolationConfig\",\n    get: function get() {\n      return this._interpolationConfig;\n    }\n  }, {\n    key: \"getUsedPipes\",\n    value: function getUsedPipes() {\n      return Array.from(this._usedPipes.values());\n    }\n  }, {\n    key: \"createBoundHostProperties\",\n    value: function createBoundHostProperties(dirMeta, sourceSpan) {\n      var _this140 = this;\n\n      if (dirMeta.hostProperties) {\n        var boundProps = [];\n        Object.keys(dirMeta.hostProperties).forEach(function (propName) {\n          var expression = dirMeta.hostProperties[propName];\n\n          if (typeof expression === 'string') {\n            _this140.parsePropertyBinding(propName, expression, true, sourceSpan, sourceSpan.start.offset, undefined, [], // Use the `sourceSpan` for  `keySpan`. This isn't really accurate, but neither is the\n            // sourceSpan, as it represents the sourceSpan of the host itself rather than the\n            // source of the host binding (which doesn't exist in the template). Regardless,\n            // neither of these values are used in Ivy but are only here to satisfy the function\n            // signature. This should likely be refactored in the future so that `sourceSpan`\n            // isn't being used inaccurately.\n            boundProps, sourceSpan);\n          } else {\n            _this140._reportError(\"Value of the host property binding \\\"\".concat(propName, \"\\\" needs to be a string representing an expression but got \\\"\").concat(expression, \"\\\" (\").concat(_typeof(expression), \")\"), sourceSpan);\n          }\n        });\n        return boundProps;\n      }\n\n      return null;\n    }\n  }, {\n    key: \"createDirectiveHostPropertyAsts\",\n    value: function createDirectiveHostPropertyAsts(dirMeta, elementSelector, sourceSpan) {\n      var _this141 = this;\n\n      var boundProps = this.createBoundHostProperties(dirMeta, sourceSpan);\n      return boundProps && boundProps.map(function (prop) {\n        return _this141.createBoundElementProperty(elementSelector, prop);\n      });\n    }\n  }, {\n    key: \"createDirectiveHostEventAsts\",\n    value: function createDirectiveHostEventAsts(dirMeta, sourceSpan) {\n      var _this142 = this;\n\n      if (dirMeta.hostListeners) {\n        var targetEvents = [];\n        Object.keys(dirMeta.hostListeners).forEach(function (propName) {\n          var expression = dirMeta.hostListeners[propName];\n\n          if (typeof expression === 'string') {\n            // TODO: pass a more accurate handlerSpan for this event.\n            _this142.parseEvent(propName, expression, sourceSpan, sourceSpan, [], targetEvents);\n          } else {\n            _this142._reportError(\"Value of the host listener \\\"\".concat(propName, \"\\\" needs to be a string representing an expression but got \\\"\").concat(expression, \"\\\" (\").concat(_typeof(expression), \")\"), sourceSpan);\n          }\n        });\n        return targetEvents;\n      }\n\n      return null;\n    }\n  }, {\n    key: \"parseInterpolation\",\n    value: function parseInterpolation(value, sourceSpan) {\n      var sourceInfo = sourceSpan.start.toString();\n\n      try {\n        var ast = this._exprParser.parseInterpolation(value, sourceInfo, sourceSpan.start.offset, this._interpolationConfig);\n\n        if (ast) this._reportExpressionParserErrors(ast.errors, sourceSpan);\n\n        this._checkPipes(ast, sourceSpan);\n\n        return ast;\n      } catch (e) {\n        this._reportError(\"\".concat(e), sourceSpan);\n\n        return this._exprParser.wrapLiteralPrimitive('ERROR', sourceInfo, sourceSpan.start.offset);\n      }\n    }\n    /**\n     * Similar to `parseInterpolation`, but treats the provided string as a single expression\n     * element that would normally appear within the interpolation prefix and suffix (`{{` and `}}`).\n     * This is used for parsing the switch expression in ICUs.\n     */\n\n  }, {\n    key: \"parseInterpolationExpression\",\n    value: function parseInterpolationExpression(expression, sourceSpan) {\n      var sourceInfo = sourceSpan.start.toString();\n\n      try {\n        var ast = this._exprParser.parseInterpolationExpression(expression, sourceInfo, sourceSpan.start.offset);\n\n        if (ast) this._reportExpressionParserErrors(ast.errors, sourceSpan);\n\n        this._checkPipes(ast, sourceSpan);\n\n        return ast;\n      } catch (e) {\n        this._reportError(\"\".concat(e), sourceSpan);\n\n        return this._exprParser.wrapLiteralPrimitive('ERROR', sourceInfo, sourceSpan.start.offset);\n      }\n    }\n    /**\n     * Parses the bindings in a microsyntax expression, and converts them to\n     * `ParsedProperty` or `ParsedVariable`.\n     *\n     * @param tplKey template binding name\n     * @param tplValue template binding value\n     * @param sourceSpan span of template binding relative to entire the template\n     * @param absoluteValueOffset start of the tplValue relative to the entire template\n     * @param targetMatchableAttrs potential attributes to match in the template\n     * @param targetProps target property bindings in the template\n     * @param targetVars target variables in the template\n     */\n\n  }, {\n    key: \"parseInlineTemplateBinding\",\n    value: function parseInlineTemplateBinding(tplKey, tplValue, sourceSpan, absoluteValueOffset, targetMatchableAttrs, targetProps, targetVars, isIvyAst) {\n      var absoluteKeyOffset = sourceSpan.start.offset + TEMPLATE_ATTR_PREFIX.length;\n\n      var bindings = this._parseTemplateBindings(tplKey, tplValue, sourceSpan, absoluteKeyOffset, absoluteValueOffset);\n\n      var _iterator9 = _createForOfIteratorHelper(bindings),\n          _step9;\n\n      try {\n        for (_iterator9.s(); !(_step9 = _iterator9.n()).done;) {\n          var binding = _step9.value;\n          // sourceSpan is for the entire HTML attribute. bindingSpan is for a particular\n          // binding within the microsyntax expression so it's more narrow than sourceSpan.\n          var bindingSpan = moveParseSourceSpan(sourceSpan, binding.sourceSpan);\n          var key = binding.key.source;\n          var keySpan = moveParseSourceSpan(sourceSpan, binding.key.span);\n\n          if (binding instanceof VariableBinding) {\n            var value = binding.value ? binding.value.source : '$implicit';\n            var valueSpan = binding.value ? moveParseSourceSpan(sourceSpan, binding.value.span) : undefined;\n            targetVars.push(new ParsedVariable(key, value, bindingSpan, keySpan, valueSpan));\n          } else if (binding.value) {\n            var srcSpan = isIvyAst ? bindingSpan : sourceSpan;\n\n            var _valueSpan = moveParseSourceSpan(sourceSpan, binding.value.ast.sourceSpan);\n\n            this._parsePropertyAst(key, binding.value, srcSpan, keySpan, _valueSpan, targetMatchableAttrs, targetProps);\n          } else {\n            targetMatchableAttrs.push([key, ''\n            /* value */\n            ]); // Since this is a literal attribute with no RHS, source span should be\n            // just the key span.\n\n            this.parseLiteralAttr(key, null\n            /* value */\n            , keySpan, absoluteValueOffset, undefined\n            /* valueSpan */\n            , targetMatchableAttrs, targetProps, keySpan);\n          }\n        }\n      } catch (err) {\n        _iterator9.e(err);\n      } finally {\n        _iterator9.f();\n      }\n    }\n    /**\n     * Parses the bindings in a microsyntax expression, e.g.\n     * ```\n     *    <tag *tplKey=\"let value1 = prop; let value2 = localVar\">\n     * ```\n     *\n     * @param tplKey template binding name\n     * @param tplValue template binding value\n     * @param sourceSpan span of template binding relative to entire the template\n     * @param absoluteKeyOffset start of the `tplKey`\n     * @param absoluteValueOffset start of the `tplValue`\n     */\n\n  }, {\n    key: \"_parseTemplateBindings\",\n    value: function _parseTemplateBindings(tplKey, tplValue, sourceSpan, absoluteKeyOffset, absoluteValueOffset) {\n      var _this143 = this;\n\n      var sourceInfo = sourceSpan.start.toString();\n\n      try {\n        var bindingsResult = this._exprParser.parseTemplateBindings(tplKey, tplValue, sourceInfo, absoluteKeyOffset, absoluteValueOffset);\n\n        this._reportExpressionParserErrors(bindingsResult.errors, sourceSpan);\n\n        bindingsResult.templateBindings.forEach(function (binding) {\n          if (binding.value instanceof ASTWithSource) {\n            _this143._checkPipes(binding.value, sourceSpan);\n          }\n        });\n        bindingsResult.warnings.forEach(function (warning) {\n          _this143._reportError(warning, sourceSpan, ParseErrorLevel.WARNING);\n        });\n        return bindingsResult.templateBindings;\n      } catch (e) {\n        this._reportError(\"\".concat(e), sourceSpan);\n\n        return [];\n      }\n    }\n  }, {\n    key: \"parseLiteralAttr\",\n    value: function parseLiteralAttr(name, value, sourceSpan, absoluteOffset, valueSpan, targetMatchableAttrs, // TODO(atscott): keySpan is only optional here so VE template parser implementation does not\n    // have to change This should be required when VE is removed.\n    targetProps, keySpan) {\n      if (isAnimationLabel(name)) {\n        name = name.substring(1);\n\n        if (value) {\n          this._reportError(\"Assigning animation triggers via @prop=\\\"exp\\\" attributes with an expression is invalid.\" + \" Use property bindings (e.g. [@prop]=\\\"exp\\\") or use an attribute without a value (e.g. @prop) instead.\", sourceSpan, ParseErrorLevel.ERROR);\n        }\n\n        this._parseAnimation(name, value, sourceSpan, absoluteOffset, keySpan, valueSpan, targetMatchableAttrs, targetProps);\n      } else {\n        targetProps.push(new ParsedProperty(name, this._exprParser.wrapLiteralPrimitive(value, '', absoluteOffset), ParsedPropertyType.LITERAL_ATTR, sourceSpan, keySpan, valueSpan));\n      }\n    }\n  }, {\n    key: \"parsePropertyBinding\",\n    value: function parsePropertyBinding(name, expression, isHost, sourceSpan, absoluteOffset, valueSpan, // TODO(atscott): keySpan is only optional here so VE template parser implementation does not\n    // have to change This should be required when VE is removed.\n    targetMatchableAttrs, targetProps, keySpan) {\n      if (name.length === 0) {\n        this._reportError(\"Property name is missing in binding\", sourceSpan);\n      }\n\n      var isAnimationProp = false;\n\n      if (name.startsWith(ANIMATE_PROP_PREFIX)) {\n        isAnimationProp = true;\n        name = name.substring(ANIMATE_PROP_PREFIX.length);\n      } else if (isAnimationLabel(name)) {\n        isAnimationProp = true;\n        name = name.substring(1);\n      }\n\n      if (isAnimationProp) {\n        this._parseAnimation(name, expression, sourceSpan, absoluteOffset, keySpan, valueSpan, targetMatchableAttrs, targetProps);\n      } else {\n        this._parsePropertyAst(name, this._parseBinding(expression, isHost, valueSpan || sourceSpan, absoluteOffset), sourceSpan, keySpan, valueSpan, targetMatchableAttrs, targetProps);\n      }\n    }\n  }, {\n    key: \"parsePropertyInterpolation\",\n    value: function parsePropertyInterpolation(name, value, sourceSpan, valueSpan, targetMatchableAttrs, // TODO(atscott): keySpan is only optional here so VE template parser implementation does not\n    // have to change This should be required when VE is removed.\n    targetProps, keySpan) {\n      var expr = this.parseInterpolation(value, valueSpan || sourceSpan);\n\n      if (expr) {\n        this._parsePropertyAst(name, expr, sourceSpan, keySpan, valueSpan, targetMatchableAttrs, targetProps);\n\n        return true;\n      }\n\n      return false;\n    }\n  }, {\n    key: \"_parsePropertyAst\",\n    value: function _parsePropertyAst(name, ast, sourceSpan, keySpan, valueSpan, targetMatchableAttrs, targetProps) {\n      targetMatchableAttrs.push([name, ast.source]);\n      targetProps.push(new ParsedProperty(name, ast, ParsedPropertyType.DEFAULT, sourceSpan, keySpan, valueSpan));\n    }\n  }, {\n    key: \"_parseAnimation\",\n    value: function _parseAnimation(name, expression, sourceSpan, absoluteOffset, keySpan, valueSpan, targetMatchableAttrs, targetProps) {\n      if (name.length === 0) {\n        this._reportError('Animation trigger is missing', sourceSpan);\n      } // This will occur when a @trigger is not paired with an expression.\n      // For animations it is valid to not have an expression since */void\n      // states will be applied by angular when the element is attached/detached\n\n\n      var ast = this._parseBinding(expression || 'undefined', false, valueSpan || sourceSpan, absoluteOffset);\n\n      targetMatchableAttrs.push([name, ast.source]);\n      targetProps.push(new ParsedProperty(name, ast, ParsedPropertyType.ANIMATION, sourceSpan, keySpan, valueSpan));\n    }\n  }, {\n    key: \"_parseBinding\",\n    value: function _parseBinding(value, isHostBinding, sourceSpan, absoluteOffset) {\n      var sourceInfo = (sourceSpan && sourceSpan.start || '(unknown)').toString();\n\n      try {\n        var ast = isHostBinding ? this._exprParser.parseSimpleBinding(value, sourceInfo, absoluteOffset, this._interpolationConfig) : this._exprParser.parseBinding(value, sourceInfo, absoluteOffset, this._interpolationConfig);\n        if (ast) this._reportExpressionParserErrors(ast.errors, sourceSpan);\n\n        this._checkPipes(ast, sourceSpan);\n\n        return ast;\n      } catch (e) {\n        this._reportError(\"\".concat(e), sourceSpan);\n\n        return this._exprParser.wrapLiteralPrimitive('ERROR', sourceInfo, absoluteOffset);\n      }\n    }\n  }, {\n    key: \"createBoundElementProperty\",\n    value: function createBoundElementProperty(elementSelector, boundProp) {\n      var skipValidation = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n      var mapPropertyName = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : true;\n\n      if (boundProp.isAnimation) {\n        return new BoundElementProperty(boundProp.name, 4\n        /* Animation */\n        , SecurityContext.NONE, boundProp.expression, null, boundProp.sourceSpan, boundProp.keySpan, boundProp.valueSpan);\n      }\n\n      var unit = null;\n      var bindingType = undefined;\n      var boundPropertyName = null;\n      var parts = boundProp.name.split(PROPERTY_PARTS_SEPARATOR);\n      var securityContexts = undefined; // Check for special cases (prefix style, attr, class)\n\n      if (parts.length > 1) {\n        if (parts[0] == ATTRIBUTE_PREFIX) {\n          boundPropertyName = parts.slice(1).join(PROPERTY_PARTS_SEPARATOR);\n\n          if (!skipValidation) {\n            this._validatePropertyOrAttributeName(boundPropertyName, boundProp.sourceSpan, true);\n          }\n\n          securityContexts = _calcPossibleSecurityContexts(this._schemaRegistry, elementSelector, boundPropertyName, true);\n          var nsSeparatorIdx = boundPropertyName.indexOf(':');\n\n          if (nsSeparatorIdx > -1) {\n            var ns = boundPropertyName.substring(0, nsSeparatorIdx);\n            var name = boundPropertyName.substring(nsSeparatorIdx + 1);\n            boundPropertyName = mergeNsAndName(ns, name);\n          }\n\n          bindingType = 1\n          /* Attribute */\n          ;\n        } else if (parts[0] == CLASS_PREFIX) {\n          boundPropertyName = parts[1];\n          bindingType = 2\n          /* Class */\n          ;\n          securityContexts = [SecurityContext.NONE];\n        } else if (parts[0] == STYLE_PREFIX) {\n          unit = parts.length > 2 ? parts[2] : null;\n          boundPropertyName = parts[1];\n          bindingType = 3\n          /* Style */\n          ;\n          securityContexts = [SecurityContext.STYLE];\n        }\n      } // If not a special case, use the full property name\n\n\n      if (boundPropertyName === null) {\n        var mappedPropName = this._schemaRegistry.getMappedPropName(boundProp.name);\n\n        boundPropertyName = mapPropertyName ? mappedPropName : boundProp.name;\n        securityContexts = _calcPossibleSecurityContexts(this._schemaRegistry, elementSelector, mappedPropName, false);\n        bindingType = 0\n        /* Property */\n        ;\n\n        if (!skipValidation) {\n          this._validatePropertyOrAttributeName(mappedPropName, boundProp.sourceSpan, false);\n        }\n      }\n\n      return new BoundElementProperty(boundPropertyName, bindingType, securityContexts[0], boundProp.expression, unit, boundProp.sourceSpan, boundProp.keySpan, boundProp.valueSpan);\n    }\n  }, {\n    key: \"parseEvent\",\n    value: function parseEvent(name, expression, sourceSpan, handlerSpan, targetMatchableAttrs, targetEvents) {\n      if (name.length === 0) {\n        this._reportError(\"Event name is missing in binding\", sourceSpan);\n      }\n\n      if (isAnimationLabel(name)) {\n        name = name.substr(1);\n\n        this._parseAnimationEvent(name, expression, sourceSpan, handlerSpan, targetEvents);\n      } else {\n        this._parseRegularEvent(name, expression, sourceSpan, handlerSpan, targetMatchableAttrs, targetEvents);\n      }\n    }\n  }, {\n    key: \"calcPossibleSecurityContexts\",\n    value: function calcPossibleSecurityContexts(selector, propName, isAttribute) {\n      var prop = this._schemaRegistry.getMappedPropName(propName);\n\n      return _calcPossibleSecurityContexts(this._schemaRegistry, selector, prop, isAttribute);\n    }\n  }, {\n    key: \"_parseAnimationEvent\",\n    value: function _parseAnimationEvent(name, expression, sourceSpan, handlerSpan, targetEvents) {\n      var matches = splitAtPeriod(name, [name, '']);\n      var eventName = matches[0];\n      var phase = matches[1].toLowerCase();\n\n      if (phase) {\n        switch (phase) {\n          case 'start':\n          case 'done':\n            var ast = this._parseAction(expression, handlerSpan);\n\n            targetEvents.push(new ParsedEvent(eventName, phase, 1\n            /* Animation */\n            , ast, sourceSpan, handlerSpan));\n            break;\n\n          default:\n            this._reportError(\"The provided animation output phase value \\\"\".concat(phase, \"\\\" for \\\"@\").concat(eventName, \"\\\" is not supported (use start or done)\"), sourceSpan);\n\n            break;\n        }\n      } else {\n        this._reportError(\"The animation trigger output event (@\".concat(eventName, \") is missing its phase value name (start or done are currently supported)\"), sourceSpan);\n      }\n    }\n  }, {\n    key: \"_parseRegularEvent\",\n    value: function _parseRegularEvent(name, expression, sourceSpan, handlerSpan, targetMatchableAttrs, targetEvents) {\n      // long format: 'target: eventName'\n      var _splitAtColon3 = splitAtColon(name, [null, name]),\n          _splitAtColon4 = _slicedToArray(_splitAtColon3, 2),\n          target = _splitAtColon4[0],\n          eventName = _splitAtColon4[1];\n\n      var ast = this._parseAction(expression, handlerSpan);\n\n      targetMatchableAttrs.push([name, ast.source]);\n      targetEvents.push(new ParsedEvent(eventName, target, 0\n      /* Regular */\n      , ast, sourceSpan, handlerSpan)); // Don't detect directives for event names for now,\n      // so don't add the event name to the matchableAttrs\n    }\n  }, {\n    key: \"_parseAction\",\n    value: function _parseAction(value, sourceSpan) {\n      var sourceInfo = (sourceSpan && sourceSpan.start || '(unknown').toString();\n      var absoluteOffset = sourceSpan && sourceSpan.start ? sourceSpan.start.offset : 0;\n\n      try {\n        var ast = this._exprParser.parseAction(value, sourceInfo, absoluteOffset, this._interpolationConfig);\n\n        if (ast) {\n          this._reportExpressionParserErrors(ast.errors, sourceSpan);\n        }\n\n        if (!ast || ast.ast instanceof EmptyExpr) {\n          this._reportError(\"Empty expressions are not allowed\", sourceSpan);\n\n          return this._exprParser.wrapLiteralPrimitive('ERROR', sourceInfo, absoluteOffset);\n        }\n\n        this._checkPipes(ast, sourceSpan);\n\n        return ast;\n      } catch (e) {\n        this._reportError(\"\".concat(e), sourceSpan);\n\n        return this._exprParser.wrapLiteralPrimitive('ERROR', sourceInfo, absoluteOffset);\n      }\n    }\n  }, {\n    key: \"_reportError\",\n    value: function _reportError(message, sourceSpan) {\n      var level = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : ParseErrorLevel.ERROR;\n      this.errors.push(new ParseError(sourceSpan, message, level));\n    }\n  }, {\n    key: \"_reportExpressionParserErrors\",\n    value: function _reportExpressionParserErrors(errors, sourceSpan) {\n      var _iterator10 = _createForOfIteratorHelper(errors),\n          _step10;\n\n      try {\n        for (_iterator10.s(); !(_step10 = _iterator10.n()).done;) {\n          var _error = _step10.value;\n\n          this._reportError(_error.message, sourceSpan);\n        }\n      } catch (err) {\n        _iterator10.e(err);\n      } finally {\n        _iterator10.f();\n      }\n    } // Make sure all the used pipes are known in `this.pipesByName`\n\n  }, {\n    key: \"_checkPipes\",\n    value: function _checkPipes(ast, sourceSpan) {\n      var _this144 = this;\n\n      if (ast && this.pipesByName) {\n        var collector = new PipeCollector();\n        ast.visit(collector);\n        collector.pipes.forEach(function (ast, pipeName) {\n          var pipeMeta = _this144.pipesByName.get(pipeName);\n\n          if (!pipeMeta) {\n            _this144._reportError(\"The pipe '\".concat(pipeName, \"' could not be found\"), new ParseSourceSpan(sourceSpan.start.moveBy(ast.span.start), sourceSpan.start.moveBy(ast.span.end)));\n          } else {\n            _this144._usedPipes.set(pipeName, pipeMeta);\n          }\n        });\n      }\n    }\n    /**\n     * @param propName the name of the property / attribute\n     * @param sourceSpan\n     * @param isAttr true when binding to an attribute\n     */\n\n  }, {\n    key: \"_validatePropertyOrAttributeName\",\n    value: function _validatePropertyOrAttributeName(propName, sourceSpan, isAttr) {\n      var report = isAttr ? this._schemaRegistry.validateAttribute(propName) : this._schemaRegistry.validateProperty(propName);\n\n      if (report.error) {\n        this._reportError(report.msg, sourceSpan, ParseErrorLevel.ERROR);\n      }\n    }\n  }]);\n\n  return BindingParser;\n}();\n\nvar PipeCollector = /*#__PURE__*/function (_RecursiveAstVisitor$) {\n  _inherits(PipeCollector, _RecursiveAstVisitor$);\n\n  var _super92 = _createSuper(PipeCollector);\n\n  function PipeCollector() {\n    var _this145;\n\n    _classCallCheck(this, PipeCollector);\n\n    _this145 = _super92.apply(this, arguments);\n    _this145.pipes = new Map();\n    return _this145;\n  }\n\n  _createClass(PipeCollector, [{\n    key: \"visitPipe\",\n    value: function visitPipe(ast, context) {\n      this.pipes.set(ast.name, ast);\n      ast.exp.visit(this);\n      this.visitAll(ast.args, context);\n      return null;\n    }\n  }]);\n\n  return PipeCollector;\n}(RecursiveAstVisitor$1);\n\nfunction isAnimationLabel(name) {\n  return name[0] == '@';\n}\n\nfunction _calcPossibleSecurityContexts(registry, selector, propName, isAttribute) {\n  var ctxs = [];\n  CssSelector.parse(selector).forEach(function (selector) {\n    var elementNames = selector.element ? [selector.element] : registry.allKnownElementNames();\n    var notElementNames = new Set(selector.notSelectors.filter(function (selector) {\n      return selector.isElementSelector();\n    }).map(function (selector) {\n      return selector.element;\n    }));\n    var possibleElementNames = elementNames.filter(function (elementName) {\n      return !notElementNames.has(elementName);\n    });\n    ctxs.push.apply(ctxs, _toConsumableArray(possibleElementNames.map(function (elementName) {\n      return registry.securityContext(elementName, propName, isAttribute);\n    })));\n  });\n  return ctxs.length === 0 ? [SecurityContext.NONE] : Array.from(new Set(ctxs)).sort();\n}\n/**\n * Compute a new ParseSourceSpan based off an original `sourceSpan` by using\n * absolute offsets from the specified `absoluteSpan`.\n *\n * @param sourceSpan original source span\n * @param absoluteSpan absolute source span to move to\n */\n\n\nfunction moveParseSourceSpan(sourceSpan, absoluteSpan) {\n  // The difference of two absolute offsets provide the relative offset\n  var startDiff = absoluteSpan.start - sourceSpan.start.offset;\n  var endDiff = absoluteSpan.end - sourceSpan.end.offset;\n  return new ParseSourceSpan(sourceSpan.start.moveBy(startDiff), sourceSpan.end.moveBy(endDiff), sourceSpan.fullStart.moveBy(startDiff), sourceSpan.details);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar NG_CONTENT_SELECT_ATTR = 'select';\nvar LINK_ELEMENT = 'link';\nvar LINK_STYLE_REL_ATTR = 'rel';\nvar LINK_STYLE_HREF_ATTR = 'href';\nvar LINK_STYLE_REL_VALUE = 'stylesheet';\nvar STYLE_ELEMENT = 'style';\nvar SCRIPT_ELEMENT = 'script';\nvar NG_NON_BINDABLE_ATTR = 'ngNonBindable';\nvar NG_PROJECT_AS = 'ngProjectAs';\n\nfunction preparseElement(ast) {\n  var selectAttr = null;\n  var hrefAttr = null;\n  var relAttr = null;\n  var nonBindable = false;\n  var projectAs = '';\n  ast.attrs.forEach(function (attr) {\n    var lcAttrName = attr.name.toLowerCase();\n\n    if (lcAttrName == NG_CONTENT_SELECT_ATTR) {\n      selectAttr = attr.value;\n    } else if (lcAttrName == LINK_STYLE_HREF_ATTR) {\n      hrefAttr = attr.value;\n    } else if (lcAttrName == LINK_STYLE_REL_ATTR) {\n      relAttr = attr.value;\n    } else if (attr.name == NG_NON_BINDABLE_ATTR) {\n      nonBindable = true;\n    } else if (attr.name == NG_PROJECT_AS) {\n      if (attr.value.length > 0) {\n        projectAs = attr.value;\n      }\n    }\n  });\n  selectAttr = normalizeNgContentSelect(selectAttr);\n  var nodeName = ast.name.toLowerCase();\n  var type = PreparsedElementType.OTHER;\n\n  if (isNgContent(nodeName)) {\n    type = PreparsedElementType.NG_CONTENT;\n  } else if (nodeName == STYLE_ELEMENT) {\n    type = PreparsedElementType.STYLE;\n  } else if (nodeName == SCRIPT_ELEMENT) {\n    type = PreparsedElementType.SCRIPT;\n  } else if (nodeName == LINK_ELEMENT && relAttr == LINK_STYLE_REL_VALUE) {\n    type = PreparsedElementType.STYLESHEET;\n  }\n\n  return new PreparsedElement(type, selectAttr, hrefAttr, nonBindable, projectAs);\n}\n\nvar PreparsedElementType;\n\n(function (PreparsedElementType) {\n  PreparsedElementType[PreparsedElementType[\"NG_CONTENT\"] = 0] = \"NG_CONTENT\";\n  PreparsedElementType[PreparsedElementType[\"STYLE\"] = 1] = \"STYLE\";\n  PreparsedElementType[PreparsedElementType[\"STYLESHEET\"] = 2] = \"STYLESHEET\";\n  PreparsedElementType[PreparsedElementType[\"SCRIPT\"] = 3] = \"SCRIPT\";\n  PreparsedElementType[PreparsedElementType[\"OTHER\"] = 4] = \"OTHER\";\n})(PreparsedElementType || (PreparsedElementType = {}));\n\nvar PreparsedElement = /*#__PURE__*/_createClass(function PreparsedElement(type, selectAttr, hrefAttr, nonBindable, projectAs) {\n  _classCallCheck(this, PreparsedElement);\n\n  this.type = type;\n  this.selectAttr = selectAttr;\n  this.hrefAttr = hrefAttr;\n  this.nonBindable = nonBindable;\n  this.projectAs = projectAs;\n});\n\nfunction normalizeNgContentSelect(selectAttr) {\n  if (selectAttr === null || selectAttr.length === 0) {\n    return '*';\n  }\n\n  return selectAttr;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar BIND_NAME_REGEXP = /^(?:(?:(?:(bind-)|(let-)|(ref-|#)|(on-)|(bindon-)|(@))(.*))|\\[\\(([^\\)]+)\\)\\]|\\[([^\\]]+)\\]|\\(([^\\)]+)\\))$/; // Group 1 = \"bind-\"\n\nvar KW_BIND_IDX = 1; // Group 2 = \"let-\"\n\nvar KW_LET_IDX = 2; // Group 3 = \"ref-/#\"\n\nvar KW_REF_IDX = 3; // Group 4 = \"on-\"\n\nvar KW_ON_IDX = 4; // Group 5 = \"bindon-\"\n\nvar KW_BINDON_IDX = 5; // Group 6 = \"@\"\n\nvar KW_AT_IDX = 6; // Group 7 = the identifier after \"bind-\", \"let-\", \"ref-/#\", \"on-\", \"bindon-\" or \"@\"\n\nvar IDENT_KW_IDX = 7; // Group 8 = identifier inside [()]\n\nvar IDENT_BANANA_BOX_IDX = 8; // Group 9 = identifier inside []\n\nvar IDENT_PROPERTY_IDX = 9; // Group 10 = identifier inside ()\n\nvar IDENT_EVENT_IDX = 10;\nvar TEMPLATE_ATTR_PREFIX$1 = '*';\nvar CLASS_ATTR = 'class';\n\nvar _TEXT_CSS_SELECTOR;\n\nfunction TEXT_CSS_SELECTOR() {\n  if (!_TEXT_CSS_SELECTOR) {\n    _TEXT_CSS_SELECTOR = CssSelector.parse('*')[0];\n  }\n\n  return _TEXT_CSS_SELECTOR;\n}\n\nvar TemplateParseError = /*#__PURE__*/function (_ParseError5) {\n  _inherits(TemplateParseError, _ParseError5);\n\n  var _super93 = _createSuper(TemplateParseError);\n\n  function TemplateParseError(message, span, level) {\n    _classCallCheck(this, TemplateParseError);\n\n    return _super93.call(this, span, message, level);\n  }\n\n  return _createClass(TemplateParseError);\n}(ParseError);\n\nvar TemplateParseResult = /*#__PURE__*/_createClass(function TemplateParseResult(templateAst, usedPipes, errors) {\n  _classCallCheck(this, TemplateParseResult);\n\n  this.templateAst = templateAst;\n  this.usedPipes = usedPipes;\n  this.errors = errors;\n});\n\nvar TemplateParser = /*#__PURE__*/function () {\n  function TemplateParser(_config, _reflector, _exprParser, _schemaRegistry, _htmlParser, _console, transforms) {\n    _classCallCheck(this, TemplateParser);\n\n    this._config = _config;\n    this._reflector = _reflector;\n    this._exprParser = _exprParser;\n    this._schemaRegistry = _schemaRegistry;\n    this._htmlParser = _htmlParser;\n    this._console = _console;\n    this.transforms = transforms;\n  }\n\n  _createClass(TemplateParser, [{\n    key: \"expressionParser\",\n    get: function get() {\n      return this._exprParser;\n    }\n  }, {\n    key: \"parse\",\n    value: function parse(component, template, directives, pipes, schemas, templateUrl, preserveWhitespaces) {\n      var _a;\n\n      var result = this.tryParse(component, template, directives, pipes, schemas, templateUrl, preserveWhitespaces);\n      var warnings = result.errors.filter(function (error) {\n        return error.level === ParseErrorLevel.WARNING;\n      });\n      var errors = result.errors.filter(function (error) {\n        return error.level === ParseErrorLevel.ERROR;\n      });\n\n      if (warnings.length > 0) {\n        (_a = this._console) === null || _a === void 0 ? void 0 : _a.warn(\"Template parse warnings:\\n\".concat(warnings.join('\\n')));\n      }\n\n      if (errors.length > 0) {\n        var errorString = errors.join('\\n');\n        throw syntaxError(\"Template parse errors:\\n\".concat(errorString), errors);\n      }\n\n      return {\n        template: result.templateAst,\n        pipes: result.usedPipes\n      };\n    }\n  }, {\n    key: \"tryParse\",\n    value: function tryParse(component, template, directives, pipes, schemas, templateUrl, preserveWhitespaces) {\n      var htmlParseResult = typeof template === 'string' ? this._htmlParser.parse(template, templateUrl, {\n        tokenizeExpansionForms: true,\n        interpolationConfig: this.getInterpolationConfig(component)\n      }) : template;\n\n      if (!preserveWhitespaces) {\n        htmlParseResult = removeWhitespaces(htmlParseResult);\n      }\n\n      return this.tryParseHtml(this.expandHtml(htmlParseResult), component, directives, pipes, schemas);\n    }\n  }, {\n    key: \"tryParseHtml\",\n    value: function tryParseHtml(htmlAstWithErrors, component, directives, pipes, schemas) {\n      var result;\n      var errors = htmlAstWithErrors.errors;\n      var usedPipes = [];\n\n      if (htmlAstWithErrors.rootNodes.length > 0) {\n        var uniqDirectives = removeSummaryDuplicates(directives);\n        var uniqPipes = removeSummaryDuplicates(pipes);\n        var providerViewContext = new ProviderViewContext(this._reflector, component);\n        var interpolationConfig = undefined;\n\n        if (component.template && component.template.interpolation) {\n          interpolationConfig = {\n            start: component.template.interpolation[0],\n            end: component.template.interpolation[1]\n          };\n        }\n\n        var bindingParser = new BindingParser(this._exprParser, interpolationConfig, this._schemaRegistry, uniqPipes, errors);\n        var parseVisitor = new TemplateParseVisitor(this._reflector, this._config, providerViewContext, uniqDirectives, bindingParser, this._schemaRegistry, schemas, errors);\n        result = visitAll$1(parseVisitor, htmlAstWithErrors.rootNodes, EMPTY_ELEMENT_CONTEXT);\n        errors.push.apply(errors, _toConsumableArray(providerViewContext.errors));\n        usedPipes.push.apply(usedPipes, _toConsumableArray(bindingParser.getUsedPipes()));\n      } else {\n        result = [];\n      }\n\n      this._assertNoReferenceDuplicationOnTemplate(result, errors);\n\n      if (errors.length > 0) {\n        return new TemplateParseResult(result, usedPipes, errors);\n      }\n\n      if (this.transforms) {\n        this.transforms.forEach(function (transform) {\n          result = templateVisitAll(transform, result);\n        });\n      }\n\n      return new TemplateParseResult(result, usedPipes, errors);\n    }\n  }, {\n    key: \"expandHtml\",\n    value: function expandHtml(htmlAstWithErrors) {\n      var forced = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n      var errors = htmlAstWithErrors.errors;\n\n      if (errors.length == 0 || forced) {\n        // Transform ICU messages to angular directives\n        var expandedHtmlAst = expandNodes(htmlAstWithErrors.rootNodes);\n        errors.push.apply(errors, _toConsumableArray(expandedHtmlAst.errors));\n        htmlAstWithErrors = new ParseTreeResult(expandedHtmlAst.nodes, errors);\n      }\n\n      return htmlAstWithErrors;\n    }\n  }, {\n    key: \"getInterpolationConfig\",\n    value: function getInterpolationConfig(component) {\n      if (component.template) {\n        return InterpolationConfig.fromArray(component.template.interpolation);\n      }\n\n      return undefined;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_assertNoReferenceDuplicationOnTemplate\",\n    value: function _assertNoReferenceDuplicationOnTemplate(result, errors) {\n      var existingReferences = [];\n      result.filter(function (element) {\n        return !!element.references;\n      }).forEach(function (element) {\n        return element.references.forEach(function (reference) {\n          var name = reference.name;\n\n          if (existingReferences.indexOf(name) < 0) {\n            existingReferences.push(name);\n          } else {\n            var _error2 = new TemplateParseError(\"Reference \\\"#\".concat(name, \"\\\" is defined several times\"), reference.sourceSpan, ParseErrorLevel.ERROR);\n\n            errors.push(_error2);\n          }\n        });\n      });\n    }\n  }]);\n\n  return TemplateParser;\n}();\n\nvar TemplateParseVisitor = /*#__PURE__*/function () {\n  function TemplateParseVisitor(reflector, config, providerViewContext, directives, _bindingParser, _schemaRegistry, _schemas, _targetErrors) {\n    var _this146 = this;\n\n    _classCallCheck(this, TemplateParseVisitor);\n\n    this.reflector = reflector;\n    this.config = config;\n    this.providerViewContext = providerViewContext;\n    this._bindingParser = _bindingParser;\n    this._schemaRegistry = _schemaRegistry;\n    this._schemas = _schemas;\n    this._targetErrors = _targetErrors;\n    this.selectorMatcher = new SelectorMatcher();\n    this.directivesIndex = new Map();\n    this.ngContentCount = 0; // Note: queries start with id 1 so we can use the number in a Bloom filter!\n\n    this.contentQueryStartId = providerViewContext.component.viewQueries.length + 1;\n    directives.forEach(function (directive, index) {\n      var selector = CssSelector.parse(directive.selector);\n\n      _this146.selectorMatcher.addSelectables(selector, directive);\n\n      _this146.directivesIndex.set(directive, index);\n    });\n  }\n\n  _createClass(TemplateParseVisitor, [{\n    key: \"visitExpansion\",\n    value: function visitExpansion(expansion, context) {\n      return null;\n    }\n  }, {\n    key: \"visitExpansionCase\",\n    value: function visitExpansionCase(expansionCase, context) {\n      return null;\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text, parent) {\n      var ngContentIndex = parent.findNgContentIndex(TEXT_CSS_SELECTOR());\n      var valueNoNgsp = replaceNgsp(text.value);\n\n      var expr = this._bindingParser.parseInterpolation(valueNoNgsp, text.sourceSpan);\n\n      return expr ? new BoundTextAst(expr, ngContentIndex, text.sourceSpan) : new TextAst(valueNoNgsp, ngContentIndex, text.sourceSpan);\n    }\n  }, {\n    key: \"visitAttribute\",\n    value: function visitAttribute(attribute, context) {\n      return new AttrAst(attribute.name, attribute.value, attribute.sourceSpan);\n    }\n  }, {\n    key: \"visitComment\",\n    value: function visitComment(comment, context) {\n      return null;\n    }\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(element, parent) {\n      var _this147 = this;\n\n      var queryStartIndex = this.contentQueryStartId;\n      var elName = element.name;\n      var preparsedElement = preparseElement(element);\n\n      if (preparsedElement.type === PreparsedElementType.SCRIPT || preparsedElement.type === PreparsedElementType.STYLE) {\n        // Skipping <script> for security reasons\n        // Skipping <style> as we already processed them\n        // in the StyleCompiler\n        return null;\n      }\n\n      if (preparsedElement.type === PreparsedElementType.STYLESHEET && isStyleUrlResolvable(preparsedElement.hrefAttr)) {\n        // Skipping stylesheets with either relative urls or package scheme as we already processed\n        // them in the StyleCompiler\n        return null;\n      }\n\n      var matchableAttrs = [];\n      var elementOrDirectiveProps = [];\n      var elementOrDirectiveRefs = [];\n      var elementVars = [];\n      var events = [];\n      var templateElementOrDirectiveProps = [];\n      var templateMatchableAttrs = [];\n      var templateElementVars = [];\n      var hasInlineTemplates = false;\n      var attrs = [];\n      var isTemplateElement = isNgTemplate(element.name);\n      element.attrs.forEach(function (attr) {\n        var parsedVariables = [];\n\n        var hasBinding = _this147._parseAttr(isTemplateElement, attr, matchableAttrs, elementOrDirectiveProps, events, elementOrDirectiveRefs, elementVars);\n\n        elementVars.push.apply(elementVars, _toConsumableArray(parsedVariables.map(function (v) {\n          return VariableAst.fromParsedVariable(v);\n        })));\n        var templateValue;\n        var templateKey;\n\n        var normalizedName = _this147._normalizeAttributeName(attr.name);\n\n        if (normalizedName.startsWith(TEMPLATE_ATTR_PREFIX$1)) {\n          templateValue = attr.value;\n          templateKey = normalizedName.substring(TEMPLATE_ATTR_PREFIX$1.length);\n        }\n\n        var hasTemplateBinding = templateValue != null;\n\n        if (hasTemplateBinding) {\n          if (hasInlineTemplates) {\n            _this147._reportError(\"Can't have multiple template bindings on one element. Use only one attribute prefixed with *\", attr.sourceSpan);\n          }\n\n          hasInlineTemplates = true;\n          var _parsedVariables = [];\n          var absoluteOffset = (attr.valueSpan || attr.sourceSpan).start.offset;\n\n          _this147._bindingParser.parseInlineTemplateBinding(templateKey, templateValue, attr.sourceSpan, absoluteOffset, templateMatchableAttrs, templateElementOrDirectiveProps, _parsedVariables, false\n          /* isIvyAst */\n          );\n\n          templateElementVars.push.apply(templateElementVars, _toConsumableArray(_parsedVariables.map(function (v) {\n            return VariableAst.fromParsedVariable(v);\n          })));\n        }\n\n        if (!hasBinding && !hasTemplateBinding) {\n          // don't include the bindings as attributes as well in the AST\n          attrs.push(_this147.visitAttribute(attr, null));\n          matchableAttrs.push([attr.name, attr.value]);\n        }\n      });\n      var elementCssSelector = createElementCssSelector(elName, matchableAttrs);\n\n      var _this$_parseDirective = this._parseDirectives(this.selectorMatcher, elementCssSelector),\n          directiveMetas = _this$_parseDirective.directives,\n          matchElement = _this$_parseDirective.matchElement;\n\n      var references = [];\n      var boundDirectivePropNames = new Set();\n\n      var directiveAsts = this._createDirectiveAsts(isTemplateElement, element.name, directiveMetas, elementOrDirectiveProps, elementOrDirectiveRefs, element.sourceSpan, references, boundDirectivePropNames);\n\n      var elementProps = this._createElementPropertyAsts(element.name, elementOrDirectiveProps, boundDirectivePropNames);\n\n      var isViewRoot = parent.isTemplateElement || hasInlineTemplates;\n      var providerContext = new ProviderElementContext(this.providerViewContext, parent.providerContext, isViewRoot, directiveAsts, attrs, references, isTemplateElement, queryStartIndex, element.sourceSpan);\n      var children = visitAll$1(preparsedElement.nonBindable ? NON_BINDABLE_VISITOR : this, element.children, ElementContext.create(isTemplateElement, directiveAsts, isTemplateElement ? parent.providerContext : providerContext));\n      providerContext.afterElement(); // Override the actual selector when the `ngProjectAs` attribute is provided\n\n      var projectionSelector = preparsedElement.projectAs != '' ? CssSelector.parse(preparsedElement.projectAs)[0] : elementCssSelector;\n      var ngContentIndex = parent.findNgContentIndex(projectionSelector);\n      var parsedElement;\n\n      if (preparsedElement.type === PreparsedElementType.NG_CONTENT) {\n        // `<ng-content>` element\n        if (element.children && !element.children.every(_isEmptyTextNode)) {\n          this._reportError(\"<ng-content> element cannot have content.\", element.sourceSpan);\n        }\n\n        parsedElement = new NgContentAst(this.ngContentCount++, hasInlineTemplates ? null : ngContentIndex, element.sourceSpan);\n      } else if (isTemplateElement) {\n        // `<ng-template>` element\n        this._assertAllEventsPublishedByDirectives(directiveAsts, events);\n\n        this._assertNoComponentsNorElementBindingsOnTemplate(directiveAsts, elementProps, element.sourceSpan);\n\n        parsedElement = new EmbeddedTemplateAst(attrs, events, references, elementVars, providerContext.transformedDirectiveAsts, providerContext.transformProviders, providerContext.transformedHasViewContainer, providerContext.queryMatches, children, hasInlineTemplates ? null : ngContentIndex, element.sourceSpan);\n      } else {\n        // element other than `<ng-content>` and `<ng-template>`\n        this._assertElementExists(matchElement, element);\n\n        this._assertOnlyOneComponent(directiveAsts, element.sourceSpan);\n\n        var _ngContentIndex = hasInlineTemplates ? null : parent.findNgContentIndex(projectionSelector);\n\n        parsedElement = new ElementAst(elName, attrs, elementProps, events, references, providerContext.transformedDirectiveAsts, providerContext.transformProviders, providerContext.transformedHasViewContainer, providerContext.queryMatches, children, hasInlineTemplates ? null : _ngContentIndex, element.sourceSpan, element.endSourceSpan || null);\n      }\n\n      if (hasInlineTemplates) {\n        // The element as a *-attribute\n        var templateQueryStartIndex = this.contentQueryStartId;\n        var templateSelector = createElementCssSelector('ng-template', templateMatchableAttrs);\n\n        var _this$_parseDirective2 = this._parseDirectives(this.selectorMatcher, templateSelector),\n            directives = _this$_parseDirective2.directives;\n\n        var templateBoundDirectivePropNames = new Set();\n\n        var templateDirectiveAsts = this._createDirectiveAsts(true, elName, directives, templateElementOrDirectiveProps, [], element.sourceSpan, [], templateBoundDirectivePropNames);\n\n        var templateElementProps = this._createElementPropertyAsts(elName, templateElementOrDirectiveProps, templateBoundDirectivePropNames);\n\n        this._assertNoComponentsNorElementBindingsOnTemplate(templateDirectiveAsts, templateElementProps, element.sourceSpan);\n\n        var templateProviderContext = new ProviderElementContext(this.providerViewContext, parent.providerContext, parent.isTemplateElement, templateDirectiveAsts, [], [], true, templateQueryStartIndex, element.sourceSpan);\n        templateProviderContext.afterElement();\n        parsedElement = new EmbeddedTemplateAst([], [], [], templateElementVars, templateProviderContext.transformedDirectiveAsts, templateProviderContext.transformProviders, templateProviderContext.transformedHasViewContainer, templateProviderContext.queryMatches, [parsedElement], ngContentIndex, element.sourceSpan);\n      }\n\n      return parsedElement;\n    }\n  }, {\n    key: \"_parseAttr\",\n    value: function _parseAttr(isTemplateElement, attr, targetMatchableAttrs, targetProps, targetEvents, targetRefs, targetVars) {\n      var name = this._normalizeAttributeName(attr.name);\n\n      var value = attr.value;\n      var srcSpan = attr.sourceSpan;\n      var absoluteOffset = attr.valueSpan ? attr.valueSpan.start.offset : srcSpan.start.offset;\n      var boundEvents = [];\n      var bindParts = name.match(BIND_NAME_REGEXP);\n      var hasBinding = false;\n\n      if (bindParts !== null) {\n        hasBinding = true;\n\n        if (bindParts[KW_BIND_IDX] != null) {\n          this._bindingParser.parsePropertyBinding(bindParts[IDENT_KW_IDX], value, false, srcSpan, absoluteOffset, attr.valueSpan, targetMatchableAttrs, targetProps);\n        } else if (bindParts[KW_LET_IDX]) {\n          if (isTemplateElement) {\n            var identifier = bindParts[IDENT_KW_IDX];\n\n            this._parseVariable(identifier, value, srcSpan, targetVars);\n          } else {\n            this._reportError(\"\\\"let-\\\" is only supported on ng-template elements.\", srcSpan);\n          }\n        } else if (bindParts[KW_REF_IDX]) {\n          var _identifier = bindParts[IDENT_KW_IDX];\n\n          this._parseReference(_identifier, value, srcSpan, targetRefs);\n        } else if (bindParts[KW_ON_IDX]) {\n          this._bindingParser.parseEvent(bindParts[IDENT_KW_IDX], value, srcSpan, attr.valueSpan || srcSpan, targetMatchableAttrs, boundEvents);\n        } else if (bindParts[KW_BINDON_IDX]) {\n          this._bindingParser.parsePropertyBinding(bindParts[IDENT_KW_IDX], value, false, srcSpan, absoluteOffset, attr.valueSpan, targetMatchableAttrs, targetProps);\n\n          this._parseAssignmentEvent(bindParts[IDENT_KW_IDX], value, srcSpan, attr.valueSpan || srcSpan, targetMatchableAttrs, boundEvents);\n        } else if (bindParts[KW_AT_IDX]) {\n          this._bindingParser.parseLiteralAttr(name, value, srcSpan, absoluteOffset, attr.valueSpan, targetMatchableAttrs, targetProps);\n        } else if (bindParts[IDENT_BANANA_BOX_IDX]) {\n          this._bindingParser.parsePropertyBinding(bindParts[IDENT_BANANA_BOX_IDX], value, false, srcSpan, absoluteOffset, attr.valueSpan, targetMatchableAttrs, targetProps);\n\n          this._parseAssignmentEvent(bindParts[IDENT_BANANA_BOX_IDX], value, srcSpan, attr.valueSpan || srcSpan, targetMatchableAttrs, boundEvents);\n        } else if (bindParts[IDENT_PROPERTY_IDX]) {\n          this._bindingParser.parsePropertyBinding(bindParts[IDENT_PROPERTY_IDX], value, false, srcSpan, absoluteOffset, attr.valueSpan, targetMatchableAttrs, targetProps);\n        } else if (bindParts[IDENT_EVENT_IDX]) {\n          this._bindingParser.parseEvent(bindParts[IDENT_EVENT_IDX], value, srcSpan, attr.valueSpan || srcSpan, targetMatchableAttrs, boundEvents);\n        }\n      } else {\n        hasBinding = this._bindingParser.parsePropertyInterpolation(name, value, srcSpan, attr.valueSpan, targetMatchableAttrs, targetProps);\n      }\n\n      if (!hasBinding) {\n        this._bindingParser.parseLiteralAttr(name, value, srcSpan, absoluteOffset, attr.valueSpan, targetMatchableAttrs, targetProps);\n      }\n\n      targetEvents.push.apply(targetEvents, _toConsumableArray(boundEvents.map(function (e) {\n        return BoundEventAst.fromParsedEvent(e);\n      })));\n      return hasBinding;\n    }\n  }, {\n    key: \"_normalizeAttributeName\",\n    value: function _normalizeAttributeName(attrName) {\n      return /^data-/i.test(attrName) ? attrName.substring(5) : attrName;\n    }\n  }, {\n    key: \"_parseVariable\",\n    value: function _parseVariable(identifier, value, sourceSpan, targetVars) {\n      if (identifier.indexOf('-') > -1) {\n        this._reportError(\"\\\"-\\\" is not allowed in variable names\", sourceSpan);\n      } else if (identifier.length === 0) {\n        this._reportError(\"Variable does not have a name\", sourceSpan);\n      }\n\n      targetVars.push(new VariableAst(identifier, value, sourceSpan));\n    }\n  }, {\n    key: \"_parseReference\",\n    value: function _parseReference(identifier, value, sourceSpan, targetRefs) {\n      if (identifier.indexOf('-') > -1) {\n        this._reportError(\"\\\"-\\\" is not allowed in reference names\", sourceSpan);\n      } else if (identifier.length === 0) {\n        this._reportError(\"Reference does not have a name\", sourceSpan);\n      }\n\n      targetRefs.push(new ElementOrDirectiveRef(identifier, value, sourceSpan));\n    }\n  }, {\n    key: \"_parseAssignmentEvent\",\n    value: function _parseAssignmentEvent(name, expression, sourceSpan, valueSpan, targetMatchableAttrs, targetEvents) {\n      this._bindingParser.parseEvent(\"\".concat(name, \"Change\"), \"\".concat(expression, \"=$event\"), sourceSpan, valueSpan, targetMatchableAttrs, targetEvents);\n    }\n  }, {\n    key: \"_parseDirectives\",\n    value: function _parseDirectives(selectorMatcher, elementCssSelector) {\n      var _this148 = this;\n\n      // Need to sort the directives so that we get consistent results throughout,\n      // as selectorMatcher uses Maps inside.\n      // Also deduplicate directives as they might match more than one time!\n      var directives = newArray(this.directivesIndex.size); // Whether any directive selector matches on the element name\n\n      var matchElement = false;\n      selectorMatcher.match(elementCssSelector, function (selector, directive) {\n        directives[_this148.directivesIndex.get(directive)] = directive;\n        matchElement = matchElement || selector.hasElementSelector();\n      });\n      return {\n        directives: directives.filter(function (dir) {\n          return !!dir;\n        }),\n        matchElement: matchElement\n      };\n    }\n  }, {\n    key: \"_createDirectiveAsts\",\n    value: function _createDirectiveAsts(isTemplateElement, elementName, directives, props, elementOrDirectiveRefs, elementSourceSpan, targetReferences, targetBoundDirectivePropNames) {\n      var _this149 = this;\n\n      var matchedReferences = new Set();\n      var component = null;\n      var directiveAsts = directives.map(function (directive) {\n        var sourceSpan = new ParseSourceSpan(elementSourceSpan.start, elementSourceSpan.end, elementSourceSpan.fullStart, \"Directive \".concat(identifierName(directive.type)));\n\n        if (directive.isComponent) {\n          component = directive;\n        }\n\n        var directiveProperties = [];\n\n        var boundProperties = _this149._bindingParser.createDirectiveHostPropertyAsts(directive, elementName, sourceSpan);\n\n        var hostProperties = boundProperties.map(function (prop) {\n          return BoundElementPropertyAst.fromBoundProperty(prop);\n        }); // Note: We need to check the host properties here as well,\n        // as we don't know the element name in the DirectiveWrapperCompiler yet.\n\n        hostProperties = _this149._checkPropertiesInSchema(elementName, hostProperties);\n\n        var parsedEvents = _this149._bindingParser.createDirectiveHostEventAsts(directive, sourceSpan);\n\n        _this149._createDirectivePropertyAsts(directive.inputs, props, directiveProperties, targetBoundDirectivePropNames);\n\n        elementOrDirectiveRefs.forEach(function (elOrDirRef) {\n          if (elOrDirRef.value.length === 0 && directive.isComponent || elOrDirRef.isReferenceToDirective(directive)) {\n            targetReferences.push(new ReferenceAst(elOrDirRef.name, createTokenForReference(directive.type.reference), elOrDirRef.value, elOrDirRef.sourceSpan));\n            matchedReferences.add(elOrDirRef.name);\n          }\n        });\n        var hostEvents = parsedEvents.map(function (e) {\n          return BoundEventAst.fromParsedEvent(e);\n        });\n        var contentQueryStartId = _this149.contentQueryStartId;\n        _this149.contentQueryStartId += directive.queries.length;\n        return new DirectiveAst(directive, directiveProperties, hostProperties, hostEvents, contentQueryStartId, sourceSpan);\n      });\n      elementOrDirectiveRefs.forEach(function (elOrDirRef) {\n        if (elOrDirRef.value.length > 0) {\n          if (!matchedReferences.has(elOrDirRef.name)) {\n            _this149._reportError(\"There is no directive with \\\"exportAs\\\" set to \\\"\".concat(elOrDirRef.value, \"\\\"\"), elOrDirRef.sourceSpan);\n          }\n        } else if (!component) {\n          var refToken = null;\n\n          if (isTemplateElement) {\n            refToken = createTokenForExternalReference(_this149.reflector, Identifiers.TemplateRef);\n          }\n\n          targetReferences.push(new ReferenceAst(elOrDirRef.name, refToken, elOrDirRef.value, elOrDirRef.sourceSpan));\n        }\n      });\n      return directiveAsts;\n    }\n  }, {\n    key: \"_createDirectivePropertyAsts\",\n    value: function _createDirectivePropertyAsts(directiveProperties, boundProps, targetBoundDirectiveProps, targetBoundDirectivePropNames) {\n      if (directiveProperties) {\n        var boundPropsByName = new Map();\n        boundProps.forEach(function (boundProp) {\n          var prevValue = boundPropsByName.get(boundProp.name);\n\n          if (!prevValue || prevValue.isLiteral) {\n            // give [a]=\"b\" a higher precedence than a=\"b\" on the same element\n            boundPropsByName.set(boundProp.name, boundProp);\n          }\n        });\n        Object.keys(directiveProperties).forEach(function (dirProp) {\n          var elProp = directiveProperties[dirProp];\n          var boundProp = boundPropsByName.get(elProp); // Bindings are optional, so this binding only needs to be set up if an expression is given.\n\n          if (boundProp) {\n            targetBoundDirectivePropNames.add(boundProp.name);\n\n            if (!isEmptyExpression(boundProp.expression)) {\n              targetBoundDirectiveProps.push(new BoundDirectivePropertyAst(dirProp, boundProp.name, boundProp.expression, boundProp.sourceSpan));\n            }\n          }\n        });\n      }\n    }\n  }, {\n    key: \"_createElementPropertyAsts\",\n    value: function _createElementPropertyAsts(elementName, props, boundDirectivePropNames) {\n      var _this150 = this;\n\n      var boundElementProps = [];\n      props.forEach(function (prop) {\n        if (!prop.isLiteral && !boundDirectivePropNames.has(prop.name)) {\n          var boundProp = _this150._bindingParser.createBoundElementProperty(elementName, prop);\n\n          boundElementProps.push(BoundElementPropertyAst.fromBoundProperty(boundProp));\n        }\n      });\n      return this._checkPropertiesInSchema(elementName, boundElementProps);\n    }\n  }, {\n    key: \"_findComponentDirectives\",\n    value: function _findComponentDirectives(directives) {\n      return directives.filter(function (directive) {\n        return directive.directive.isComponent;\n      });\n    }\n  }, {\n    key: \"_findComponentDirectiveNames\",\n    value: function _findComponentDirectiveNames(directives) {\n      return this._findComponentDirectives(directives).map(function (directive) {\n        return identifierName(directive.directive.type);\n      });\n    }\n  }, {\n    key: \"_assertOnlyOneComponent\",\n    value: function _assertOnlyOneComponent(directives, sourceSpan) {\n      var componentTypeNames = this._findComponentDirectiveNames(directives);\n\n      if (componentTypeNames.length > 1) {\n        this._reportError(\"More than one component matched on this element.\\n\" + \"Make sure that only one component's selector can match a given element.\\n\" + \"Conflicting components: \".concat(componentTypeNames.join(',')), sourceSpan);\n      }\n    }\n    /**\n     * Make sure that non-angular tags conform to the schemas.\n     *\n     * Note: An element is considered an angular tag when at least one directive selector matches the\n     * tag name.\n     *\n     * @param matchElement Whether any directive has matched on the tag name\n     * @param element the html element\n     */\n\n  }, {\n    key: \"_assertElementExists\",\n    value: function _assertElementExists(matchElement, element) {\n      var elName = element.name.replace(/^:xhtml:/, '');\n\n      if (!matchElement && !this._schemaRegistry.hasElement(elName, this._schemas)) {\n        var errorMsg = \"'\".concat(elName, \"' is not a known element:\\n\");\n        errorMsg += \"1. If '\".concat(elName, \"' is an Angular component, then verify that it is part of this module.\\n\");\n\n        if (elName.indexOf('-') > -1) {\n          errorMsg += \"2. If '\".concat(elName, \"' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.\");\n        } else {\n          errorMsg += \"2. To allow any element add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component.\";\n        }\n\n        this._reportError(errorMsg, element.sourceSpan);\n      }\n    }\n  }, {\n    key: \"_assertNoComponentsNorElementBindingsOnTemplate\",\n    value: function _assertNoComponentsNorElementBindingsOnTemplate(directives, elementProps, sourceSpan) {\n      var _this151 = this;\n\n      var componentTypeNames = this._findComponentDirectiveNames(directives);\n\n      if (componentTypeNames.length > 0) {\n        this._reportError(\"Components on an embedded template: \".concat(componentTypeNames.join(',')), sourceSpan);\n      }\n\n      elementProps.forEach(function (prop) {\n        _this151._reportError(\"Property binding \".concat(prop.name, \" not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the \\\"@NgModule.declarations\\\".\"), sourceSpan);\n      });\n    }\n  }, {\n    key: \"_assertAllEventsPublishedByDirectives\",\n    value: function _assertAllEventsPublishedByDirectives(directives, events) {\n      var _this152 = this;\n\n      var allDirectiveEvents = new Set();\n      directives.forEach(function (directive) {\n        Object.keys(directive.directive.outputs).forEach(function (k) {\n          var eventName = directive.directive.outputs[k];\n          allDirectiveEvents.add(eventName);\n        });\n      });\n      events.forEach(function (event) {\n        if (event.target != null || !allDirectiveEvents.has(event.name)) {\n          _this152._reportError(\"Event binding \".concat(event.fullName, \" not emitted by any directive on an embedded template. Make sure that the event name is spelled correctly and all directives are listed in the \\\"@NgModule.declarations\\\".\"), event.sourceSpan);\n        }\n      });\n    }\n  }, {\n    key: \"_checkPropertiesInSchema\",\n    value: function _checkPropertiesInSchema(elementName, boundProps) {\n      var _this153 = this;\n\n      // Note: We can't filter out empty expressions before this method,\n      // as we still want to validate them!\n      return boundProps.filter(function (boundProp) {\n        if (boundProp.type === 0\n        /* Property */\n        && !_this153._schemaRegistry.hasProperty(elementName, boundProp.name, _this153._schemas)) {\n          var errorMsg = \"Can't bind to '\".concat(boundProp.name, \"' since it isn't a known property of '\").concat(elementName, \"'.\");\n\n          if (elementName.startsWith('ng-')) {\n            errorMsg += \"\\n1. If '\".concat(boundProp.name, \"' is an Angular directive, then add 'CommonModule' to the '@NgModule.imports' of this component.\") + \"\\n2. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component.\";\n          } else if (elementName.indexOf('-') > -1) {\n            errorMsg += \"\\n1. If '\".concat(elementName, \"' is an Angular component and it has '\").concat(boundProp.name, \"' input, then verify that it is part of this module.\") + \"\\n2. If '\".concat(elementName, \"' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.\") + \"\\n3. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component.\";\n          }\n\n          _this153._reportError(errorMsg, boundProp.sourceSpan);\n        }\n\n        return !isEmptyExpression(boundProp.value);\n      });\n    }\n  }, {\n    key: \"_reportError\",\n    value: function _reportError(message, sourceSpan) {\n      var level = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : ParseErrorLevel.ERROR;\n\n      this._targetErrors.push(new ParseError(sourceSpan, message, level));\n    }\n  }]);\n\n  return TemplateParseVisitor;\n}();\n\nvar NonBindableVisitor = /*#__PURE__*/function () {\n  function NonBindableVisitor() {\n    _classCallCheck(this, NonBindableVisitor);\n  }\n\n  _createClass(NonBindableVisitor, [{\n    key: \"visitElement\",\n    value: function visitElement(ast, parent) {\n      var preparsedElement = preparseElement(ast);\n\n      if (preparsedElement.type === PreparsedElementType.SCRIPT || preparsedElement.type === PreparsedElementType.STYLE || preparsedElement.type === PreparsedElementType.STYLESHEET) {\n        // Skipping <script> for security reasons\n        // Skipping <style> and stylesheets as we already processed them\n        // in the StyleCompiler\n        return null;\n      }\n\n      var attrNameAndValues = ast.attrs.map(function (attr) {\n        return [attr.name, attr.value];\n      });\n      var selector = createElementCssSelector(ast.name, attrNameAndValues);\n      var ngContentIndex = parent.findNgContentIndex(selector);\n      var children = visitAll$1(this, ast.children, EMPTY_ELEMENT_CONTEXT);\n      return new ElementAst(ast.name, visitAll$1(this, ast.attrs), [], [], [], [], [], false, [], children, ngContentIndex, ast.sourceSpan, ast.endSourceSpan);\n    }\n  }, {\n    key: \"visitComment\",\n    value: function visitComment(comment, context) {\n      return null;\n    }\n  }, {\n    key: \"visitAttribute\",\n    value: function visitAttribute(attribute, context) {\n      return new AttrAst(attribute.name, attribute.value, attribute.sourceSpan);\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text, parent) {\n      var ngContentIndex = parent.findNgContentIndex(TEXT_CSS_SELECTOR());\n      return new TextAst(text.value, ngContentIndex, text.sourceSpan);\n    }\n  }, {\n    key: \"visitExpansion\",\n    value: function visitExpansion(expansion, context) {\n      return expansion;\n    }\n  }, {\n    key: \"visitExpansionCase\",\n    value: function visitExpansionCase(expansionCase, context) {\n      return expansionCase;\n    }\n  }]);\n\n  return NonBindableVisitor;\n}();\n/**\n * A reference to an element or directive in a template. E.g., the reference in this template:\n *\n * <div #myMenu=\"coolMenu\">\n *\n * would be {name: 'myMenu', value: 'coolMenu', sourceSpan: ...}\n */\n\n\nvar ElementOrDirectiveRef = /*#__PURE__*/function () {\n  function ElementOrDirectiveRef(name, value, sourceSpan) {\n    _classCallCheck(this, ElementOrDirectiveRef);\n\n    this.name = name;\n    this.value = value;\n    this.sourceSpan = sourceSpan;\n  }\n  /** Gets whether this is a reference to the given directive. */\n\n\n  _createClass(ElementOrDirectiveRef, [{\n    key: \"isReferenceToDirective\",\n    value: function isReferenceToDirective(directive) {\n      return splitExportAs(directive.exportAs).indexOf(this.value) !== -1;\n    }\n  }]);\n\n  return ElementOrDirectiveRef;\n}();\n/** Splits a raw, potentially comma-delimited `exportAs` value into an array of names. */\n\n\nfunction splitExportAs(exportAs) {\n  return exportAs ? exportAs.split(',').map(function (e) {\n    return e.trim();\n  }) : [];\n}\n\nfunction splitClasses(classAttrValue) {\n  return classAttrValue.trim().split(/\\s+/g);\n}\n\nvar ElementContext = /*#__PURE__*/function () {\n  function ElementContext(isTemplateElement, _ngContentIndexMatcher, _wildcardNgContentIndex, providerContext) {\n    _classCallCheck(this, ElementContext);\n\n    this.isTemplateElement = isTemplateElement;\n    this._ngContentIndexMatcher = _ngContentIndexMatcher;\n    this._wildcardNgContentIndex = _wildcardNgContentIndex;\n    this.providerContext = providerContext;\n  }\n\n  _createClass(ElementContext, [{\n    key: \"findNgContentIndex\",\n    value: function findNgContentIndex(selector) {\n      var ngContentIndices = [];\n\n      this._ngContentIndexMatcher.match(selector, function (selector, ngContentIndex) {\n        ngContentIndices.push(ngContentIndex);\n      });\n\n      ngContentIndices.sort();\n\n      if (this._wildcardNgContentIndex != null) {\n        ngContentIndices.push(this._wildcardNgContentIndex);\n      }\n\n      return ngContentIndices.length > 0 ? ngContentIndices[0] : null;\n    }\n  }], [{\n    key: \"create\",\n    value: function create(isTemplateElement, directives, providerContext) {\n      var matcher = new SelectorMatcher();\n      var wildcardNgContentIndex = null;\n      var component = directives.find(function (directive) {\n        return directive.directive.isComponent;\n      });\n\n      if (component) {\n        var ngContentSelectors = component.directive.template.ngContentSelectors;\n\n        for (var i = 0; i < ngContentSelectors.length; i++) {\n          var selector = ngContentSelectors[i];\n\n          if (selector === '*') {\n            wildcardNgContentIndex = i;\n          } else {\n            matcher.addSelectables(CssSelector.parse(ngContentSelectors[i]), i);\n          }\n        }\n      }\n\n      return new ElementContext(isTemplateElement, matcher, wildcardNgContentIndex, providerContext);\n    }\n  }]);\n\n  return ElementContext;\n}();\n\nfunction createElementCssSelector(elementName, attributes) {\n  var cssSelector = new CssSelector();\n  var elNameNoNs = splitNsName(elementName)[1];\n  cssSelector.setElement(elNameNoNs);\n\n  for (var i = 0; i < attributes.length; i++) {\n    var attrName = attributes[i][0];\n    var attrNameNoNs = splitNsName(attrName)[1];\n    var attrValue = attributes[i][1];\n    cssSelector.addAttribute(attrNameNoNs, attrValue);\n\n    if (attrName.toLowerCase() == CLASS_ATTR) {\n      var classes = splitClasses(attrValue);\n      classes.forEach(function (className) {\n        return cssSelector.addClassName(className);\n      });\n    }\n  }\n\n  return cssSelector;\n}\n\nvar EMPTY_ELEMENT_CONTEXT = new ElementContext(true, new SelectorMatcher(), null, null);\nvar NON_BINDABLE_VISITOR = new NonBindableVisitor();\n\nfunction _isEmptyTextNode(node) {\n  return node instanceof Text$3 && node.value.trim().length == 0;\n}\n\nfunction removeSummaryDuplicates(items) {\n  var map = new Map();\n  items.forEach(function (item) {\n    if (!map.get(item.type.reference)) {\n      map.set(item.type.reference, item);\n    }\n  });\n  return Array.from(map.values());\n}\n\nfunction isEmptyExpression(ast) {\n  if (ast instanceof ASTWithSource) {\n    ast = ast.ast;\n  }\n\n  return ast instanceof EmptyExpr;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Parses string representation of a style and converts it into object literal.\n *\n * @param value string representation of style as used in the `style` attribute in HTML.\n *   Example: `color: red; height: auto`.\n * @returns An array of style property name and value pairs, e.g. `['color', 'red', 'height',\n * 'auto']`\n */\n\n\nfunction parse(value) {\n  // we use a string array here instead of a string map\n  // because a string-map is not guaranteed to retain the\n  // order of the entries whereas a string array can be\n  // constructed in a [key, value, key, value] format.\n  var styles = [];\n  var i = 0;\n  var parenDepth = 0;\n  var quote = 0\n  /* QuoteNone */\n  ;\n  var valueStart = 0;\n  var propStart = 0;\n  var currentProp = null;\n  var valueHasQuotes = false;\n\n  while (i < value.length) {\n    var token = value.charCodeAt(i++);\n\n    switch (token) {\n      case 40\n      /* OpenParen */\n      :\n        parenDepth++;\n        break;\n\n      case 41\n      /* CloseParen */\n      :\n        parenDepth--;\n        break;\n\n      case 39\n      /* QuoteSingle */\n      :\n        // valueStart needs to be there since prop values don't\n        // have quotes in CSS\n        valueHasQuotes = valueHasQuotes || valueStart > 0;\n\n        if (quote === 0\n        /* QuoteNone */\n        ) {\n          quote = 39\n          /* QuoteSingle */\n          ;\n        } else if (quote === 39\n        /* QuoteSingle */\n        && value.charCodeAt(i - 1) !== 92\n        /* BackSlash */\n        ) {\n          quote = 0\n          /* QuoteNone */\n          ;\n        }\n\n        break;\n\n      case 34\n      /* QuoteDouble */\n      :\n        // same logic as above\n        valueHasQuotes = valueHasQuotes || valueStart > 0;\n\n        if (quote === 0\n        /* QuoteNone */\n        ) {\n          quote = 34\n          /* QuoteDouble */\n          ;\n        } else if (quote === 34\n        /* QuoteDouble */\n        && value.charCodeAt(i - 1) !== 92\n        /* BackSlash */\n        ) {\n          quote = 0\n          /* QuoteNone */\n          ;\n        }\n\n        break;\n\n      case 58\n      /* Colon */\n      :\n        if (!currentProp && parenDepth === 0 && quote === 0\n        /* QuoteNone */\n        ) {\n          currentProp = hyphenate(value.substring(propStart, i - 1).trim());\n          valueStart = i;\n        }\n\n        break;\n\n      case 59\n      /* Semicolon */\n      :\n        if (currentProp && valueStart > 0 && parenDepth === 0 && quote === 0\n        /* QuoteNone */\n        ) {\n          var styleVal = value.substring(valueStart, i - 1).trim();\n          styles.push(currentProp, valueHasQuotes ? stripUnnecessaryQuotes(styleVal) : styleVal);\n          propStart = i;\n          valueStart = 0;\n          currentProp = null;\n          valueHasQuotes = false;\n        }\n\n        break;\n    }\n  }\n\n  if (currentProp && valueStart) {\n    var _styleVal = value.substr(valueStart).trim();\n\n    styles.push(currentProp, valueHasQuotes ? stripUnnecessaryQuotes(_styleVal) : _styleVal);\n  }\n\n  return styles;\n}\n\nfunction stripUnnecessaryQuotes(value) {\n  var qS = value.charCodeAt(0);\n  var qE = value.charCodeAt(value.length - 1);\n\n  if (qS == qE && (qS == 39\n  /* QuoteSingle */\n  || qS == 34\n  /* QuoteDouble */\n  )) {\n    var tempValue = value.substring(1, value.length - 1); // special case to avoid using a multi-quoted string that was just chomped\n    // (e.g. `font-family: \"Verdana\", \"sans-serif\"`)\n\n    if (tempValue.indexOf('\\'') == -1 && tempValue.indexOf('\"') == -1) {\n      value = tempValue;\n    }\n  }\n\n  return value;\n}\n\nfunction hyphenate(value) {\n  return value.replace(/[a-z][A-Z]/g, function (v) {\n    return v.charAt(0) + '-' + v.charAt(1);\n  }).toLowerCase();\n}\n\nvar IMPORTANT_FLAG = '!important';\n/**\n * Minimum amount of binding slots required in the runtime for style/class bindings.\n *\n * Styling in Angular uses up two slots in the runtime LView/TData data structures to\n * record binding data, property information and metadata.\n *\n * When a binding is registered it will place the following information in the `LView`:\n *\n * slot 1) binding value\n * slot 2) cached value (all other values collected before it in string form)\n *\n * When a binding is registered it will place the following information in the `TData`:\n *\n * slot 1) prop name\n * slot 2) binding index that points to the previous style/class binding (and some extra config\n * values)\n *\n * Let's imagine we have a binding that looks like so:\n *\n * ```\n * <div [style.width]=\"x\" [style.height]=\"y\">\n * ```\n *\n * Our `LView` and `TData` data-structures look like so:\n *\n * ```typescript\n * LView = [\n *   // ...\n *   x, // value of x\n *   \"width: x\",\n *\n *   y, // value of y\n *   \"width: x; height: y\",\n *   // ...\n * ];\n *\n * TData = [\n *   // ...\n *   \"width\", // binding slot 20\n *   0,\n *\n *   \"height\",\n *   20,\n *   // ...\n * ];\n * ```\n *\n * */\n\nvar MIN_STYLING_BINDING_SLOTS_REQUIRED = 2;\n/**\n * Produces creation/update instructions for all styling bindings (class and style)\n *\n * It also produces the creation instruction to register all initial styling values\n * (which are all the static class=\"...\" and style=\"...\" attribute values that exist\n * on an element within a template).\n *\n * The builder class below handles producing instructions for the following cases:\n *\n * - Static style/class attributes (style=\"...\" and class=\"...\")\n * - Dynamic style/class map bindings ([style]=\"map\" and [class]=\"map|string\")\n * - Dynamic style/class property bindings ([style.prop]=\"exp\" and [class.name]=\"exp\")\n *\n * Due to the complex relationship of all of these cases, the instructions generated\n * for these attributes/properties/bindings must be done so in the correct order. The\n * order which these must be generated is as follows:\n *\n * if (createMode) {\n *   styling(...)\n * }\n * if (updateMode) {\n *   styleMap(...)\n *   classMap(...)\n *   styleProp(...)\n *   classProp(...)\n * }\n *\n * The creation/update methods within the builder class produce these instructions.\n */\n\nvar StylingBuilder = /*#__PURE__*/function () {\n  function StylingBuilder(_directiveExpr) {\n    _classCallCheck(this, StylingBuilder);\n\n    this._directiveExpr = _directiveExpr;\n    /** Whether or not there are any static styling values present */\n\n    this._hasInitialValues = false;\n    /**\n     *  Whether or not there are any styling bindings present\n     *  (i.e. `[style]`, `[class]`, `[style.prop]` or `[class.name]`)\n     */\n\n    this.hasBindings = false;\n    this.hasBindingsWithPipes = false;\n    /** the input for [class] (if it exists) */\n\n    this._classMapInput = null;\n    /** the input for [style] (if it exists) */\n\n    this._styleMapInput = null;\n    /** an array of each [style.prop] input */\n\n    this._singleStyleInputs = null;\n    /** an array of each [class.name] input */\n\n    this._singleClassInputs = null;\n    this._lastStylingInput = null;\n    this._firstStylingInput = null; // maps are used instead of hash maps because a Map will\n    // retain the ordering of the keys\n\n    /**\n     * Represents the location of each style binding in the template\n     * (e.g. `<div [style.width]=\"w\" [style.height]=\"h\">` implies\n     * that `width=0` and `height=1`)\n     */\n\n    this._stylesIndex = new Map();\n    /**\n     * Represents the location of each class binding in the template\n     * (e.g. `<div [class.big]=\"b\" [class.hidden]=\"h\">` implies\n     * that `big=0` and `hidden=1`)\n     */\n\n    this._classesIndex = new Map();\n    this._initialStyleValues = [];\n    this._initialClassValues = [];\n  }\n  /**\n   * Registers a given input to the styling builder to be later used when producing AOT code.\n   *\n   * The code below will only accept the input if it is somehow tied to styling (whether it be\n   * style/class bindings or static style/class attributes).\n   */\n\n\n  _createClass(StylingBuilder, [{\n    key: \"registerBoundInput\",\n    value: function registerBoundInput(input) {\n      // [attr.style] or [attr.class] are skipped in the code below,\n      // they should not be treated as styling-based bindings since\n      // they are intended to be written directly to the attr and\n      // will therefore skip all style/class resolution that is present\n      // with style=\"\", [style]=\"\" and [style.prop]=\"\", class=\"\",\n      // [class.prop]=\"\". [class]=\"\" assignments\n      var binding = null;\n      var name = input.name;\n\n      switch (input.type) {\n        case 0\n        /* Property */\n        :\n          binding = this.registerInputBasedOnName(name, input.value, input.sourceSpan);\n          break;\n\n        case 3\n        /* Style */\n        :\n          binding = this.registerStyleInput(name, false, input.value, input.sourceSpan, input.unit);\n          break;\n\n        case 2\n        /* Class */\n        :\n          binding = this.registerClassInput(name, false, input.value, input.sourceSpan);\n          break;\n      }\n\n      return binding ? true : false;\n    }\n  }, {\n    key: \"registerInputBasedOnName\",\n    value: function registerInputBasedOnName(name, expression, sourceSpan) {\n      var binding = null;\n      var prefix = name.substring(0, 6);\n      var isStyle = name === 'style' || prefix === 'style.' || prefix === 'style!';\n      var isClass = !isStyle && (name === 'class' || prefix === 'class.' || prefix === 'class!');\n\n      if (isStyle || isClass) {\n        var isMapBased = name.charAt(5) !== '.'; // style.prop or class.prop makes this a no\n\n        var property = name.substr(isMapBased ? 5 : 6); // the dot explains why there's a +1\n\n        if (isStyle) {\n          binding = this.registerStyleInput(property, isMapBased, expression, sourceSpan);\n        } else {\n          binding = this.registerClassInput(property, isMapBased, expression, sourceSpan);\n        }\n      }\n\n      return binding;\n    }\n  }, {\n    key: \"registerStyleInput\",\n    value: function registerStyleInput(name, isMapBased, value, sourceSpan, suffix) {\n      if (isEmptyExpression(value)) {\n        return null;\n      }\n\n      name = normalizePropName(name);\n\n      var _parseProperty = parseProperty(name),\n          property = _parseProperty.property,\n          hasOverrideFlag = _parseProperty.hasOverrideFlag,\n          bindingSuffix = _parseProperty.suffix;\n\n      suffix = typeof suffix === 'string' && suffix.length !== 0 ? suffix : bindingSuffix;\n      var entry = {\n        name: property,\n        suffix: suffix,\n        value: value,\n        sourceSpan: sourceSpan,\n        hasOverrideFlag: hasOverrideFlag\n      };\n\n      if (isMapBased) {\n        this._styleMapInput = entry;\n      } else {\n        (this._singleStyleInputs = this._singleStyleInputs || []).push(entry);\n        registerIntoMap(this._stylesIndex, property);\n      }\n\n      this._lastStylingInput = entry;\n      this._firstStylingInput = this._firstStylingInput || entry;\n\n      this._checkForPipes(value);\n\n      this.hasBindings = true;\n      return entry;\n    }\n  }, {\n    key: \"registerClassInput\",\n    value: function registerClassInput(name, isMapBased, value, sourceSpan) {\n      if (isEmptyExpression(value)) {\n        return null;\n      }\n\n      var _parseProperty2 = parseProperty(name),\n          property = _parseProperty2.property,\n          hasOverrideFlag = _parseProperty2.hasOverrideFlag;\n\n      var entry = {\n        name: property,\n        value: value,\n        sourceSpan: sourceSpan,\n        hasOverrideFlag: hasOverrideFlag,\n        suffix: null\n      };\n\n      if (isMapBased) {\n        if (this._classMapInput) {\n          throw new Error('[class] and [className] bindings cannot be used on the same element simultaneously');\n        }\n\n        this._classMapInput = entry;\n      } else {\n        (this._singleClassInputs = this._singleClassInputs || []).push(entry);\n        registerIntoMap(this._classesIndex, property);\n      }\n\n      this._lastStylingInput = entry;\n      this._firstStylingInput = this._firstStylingInput || entry;\n\n      this._checkForPipes(value);\n\n      this.hasBindings = true;\n      return entry;\n    }\n  }, {\n    key: \"_checkForPipes\",\n    value: function _checkForPipes(value) {\n      if (value instanceof ASTWithSource && value.ast instanceof BindingPipe) {\n        this.hasBindingsWithPipes = true;\n      }\n    }\n    /**\n     * Registers the element's static style string value to the builder.\n     *\n     * @param value the style string (e.g. `width:100px; height:200px;`)\n     */\n\n  }, {\n    key: \"registerStyleAttr\",\n    value: function registerStyleAttr(value) {\n      this._initialStyleValues = parse(value);\n      this._hasInitialValues = true;\n    }\n    /**\n     * Registers the element's static class string value to the builder.\n     *\n     * @param value the className string (e.g. `disabled gold zoom`)\n     */\n\n  }, {\n    key: \"registerClassAttr\",\n    value: function registerClassAttr(value) {\n      this._initialClassValues = value.trim().split(/\\s+/g);\n      this._hasInitialValues = true;\n    }\n    /**\n     * Appends all styling-related expressions to the provided attrs array.\n     *\n     * @param attrs an existing array where each of the styling expressions\n     * will be inserted into.\n     */\n\n  }, {\n    key: \"populateInitialStylingAttrs\",\n    value: function populateInitialStylingAttrs(attrs) {\n      // [CLASS_MARKER, 'foo', 'bar', 'baz' ...]\n      if (this._initialClassValues.length) {\n        attrs.push(literal(1\n        /* Classes */\n        ));\n\n        for (var i = 0; i < this._initialClassValues.length; i++) {\n          attrs.push(literal(this._initialClassValues[i]));\n        }\n      } // [STYLE_MARKER, 'width', '200px', 'height', '100px', ...]\n\n\n      if (this._initialStyleValues.length) {\n        attrs.push(literal(2\n        /* Styles */\n        ));\n\n        for (var _i6 = 0; _i6 < this._initialStyleValues.length; _i6 += 2) {\n          attrs.push(literal(this._initialStyleValues[_i6]), literal(this._initialStyleValues[_i6 + 1]));\n        }\n      }\n    }\n    /**\n     * Builds an instruction with all the expressions and parameters for `elementHostAttrs`.\n     *\n     * The instruction generation code below is used for producing the AOT statement code which is\n     * responsible for registering initial styles (within a directive hostBindings' creation block),\n     * as well as any of the provided attribute values, to the directive host element.\n     */\n\n  }, {\n    key: \"assignHostAttrs\",\n    value: function assignHostAttrs(attrs, definitionMap) {\n      if (this._directiveExpr && (attrs.length || this._hasInitialValues)) {\n        this.populateInitialStylingAttrs(attrs);\n        definitionMap.set('hostAttrs', literalArr(attrs));\n      }\n    }\n    /**\n     * Builds an instruction with all the expressions and parameters for `classMap`.\n     *\n     * The instruction data will contain all expressions for `classMap` to function\n     * which includes the `[class]` expression params.\n     */\n\n  }, {\n    key: \"buildClassMapInstruction\",\n    value: function buildClassMapInstruction(valueConverter) {\n      if (this._classMapInput) {\n        return this._buildMapBasedInstruction(valueConverter, true, this._classMapInput);\n      }\n\n      return null;\n    }\n    /**\n     * Builds an instruction with all the expressions and parameters for `styleMap`.\n     *\n     * The instruction data will contain all expressions for `styleMap` to function\n     * which includes the `[style]` expression params.\n     */\n\n  }, {\n    key: \"buildStyleMapInstruction\",\n    value: function buildStyleMapInstruction(valueConverter) {\n      if (this._styleMapInput) {\n        return this._buildMapBasedInstruction(valueConverter, false, this._styleMapInput);\n      }\n\n      return null;\n    }\n  }, {\n    key: \"_buildMapBasedInstruction\",\n    value: function _buildMapBasedInstruction(valueConverter, isClassBased, stylingInput) {\n      // each styling binding value is stored in the LView\n      // map-based bindings allocate two slots: one for the\n      // previous binding value and another for the previous\n      // className or style attribute value.\n      var totalBindingSlotsRequired = MIN_STYLING_BINDING_SLOTS_REQUIRED; // these values must be outside of the update block so that they can\n      // be evaluated (the AST visit call) during creation time so that any\n      // pipes can be picked up in time before the template is built\n\n      var mapValue = stylingInput.value.visit(valueConverter);\n      var reference;\n\n      if (mapValue instanceof Interpolation) {\n        totalBindingSlotsRequired += mapValue.expressions.length;\n        reference = isClassBased ? getClassMapInterpolationExpression(mapValue) : getStyleMapInterpolationExpression(mapValue);\n      } else {\n        reference = isClassBased ? Identifiers$1.classMap : Identifiers$1.styleMap;\n      }\n\n      return {\n        reference: reference,\n        calls: [{\n          supportsInterpolation: true,\n          sourceSpan: stylingInput.sourceSpan,\n          allocateBindingSlots: totalBindingSlotsRequired,\n          params: function params(convertFn) {\n            var convertResult = convertFn(mapValue);\n            var params = Array.isArray(convertResult) ? convertResult : [convertResult];\n            return params;\n          }\n        }]\n      };\n    }\n  }, {\n    key: \"_buildSingleInputs\",\n    value: function _buildSingleInputs(reference, inputs, valueConverter, getInterpolationExpressionFn, isClassBased) {\n      var instructions = [];\n      inputs.forEach(function (input) {\n        var previousInstruction = instructions[instructions.length - 1];\n        var value = input.value.visit(valueConverter);\n        var referenceForCall = reference; // each styling binding value is stored in the LView\n        // but there are two values stored for each binding:\n        //   1) the value itself\n        //   2) an intermediate value (concatenation of style up to this point).\n        //      We need to store the intermediate value so that we don't allocate\n        //      the strings on each CD.\n\n        var totalBindingSlotsRequired = MIN_STYLING_BINDING_SLOTS_REQUIRED;\n\n        if (value instanceof Interpolation) {\n          totalBindingSlotsRequired += value.expressions.length;\n\n          if (getInterpolationExpressionFn) {\n            referenceForCall = getInterpolationExpressionFn(value);\n          }\n        }\n\n        var call = {\n          sourceSpan: input.sourceSpan,\n          allocateBindingSlots: totalBindingSlotsRequired,\n          supportsInterpolation: !!getInterpolationExpressionFn,\n          params: function params(convertFn) {\n            // params => stylingProp(propName, value, suffix)\n            var params = [];\n            params.push(literal(input.name));\n            var convertResult = convertFn(value);\n\n            if (Array.isArray(convertResult)) {\n              params.push.apply(params, _toConsumableArray(convertResult));\n            } else {\n              params.push(convertResult);\n            } // [style.prop] bindings may use suffix values (e.g. px, em, etc...), therefore,\n            // if that is detected then we need to pass that in as an optional param.\n\n\n            if (!isClassBased && input.suffix !== null) {\n              params.push(literal(input.suffix));\n            }\n\n            return params;\n          }\n        }; // If we ended up generating a call to the same instruction as the previous styling property\n        // we can chain the calls together safely to save some bytes, otherwise we have to generate\n        // a separate instruction call. This is primarily a concern with interpolation instructions\n        // where we may start off with one `reference`, but end up using another based on the\n        // number of interpolations.\n\n        if (previousInstruction && previousInstruction.reference === referenceForCall) {\n          previousInstruction.calls.push(call);\n        } else {\n          instructions.push({\n            reference: referenceForCall,\n            calls: [call]\n          });\n        }\n      });\n      return instructions;\n    }\n  }, {\n    key: \"_buildClassInputs\",\n    value: function _buildClassInputs(valueConverter) {\n      if (this._singleClassInputs) {\n        return this._buildSingleInputs(Identifiers$1.classProp, this._singleClassInputs, valueConverter, null, true);\n      }\n\n      return [];\n    }\n  }, {\n    key: \"_buildStyleInputs\",\n    value: function _buildStyleInputs(valueConverter) {\n      if (this._singleStyleInputs) {\n        return this._buildSingleInputs(Identifiers$1.styleProp, this._singleStyleInputs, valueConverter, getStylePropInterpolationExpression, false);\n      }\n\n      return [];\n    }\n    /**\n     * Constructs all instructions which contain the expressions that will be placed\n     * into the update block of a template function or a directive hostBindings function.\n     */\n\n  }, {\n    key: \"buildUpdateLevelInstructions\",\n    value: function buildUpdateLevelInstructions(valueConverter) {\n      var instructions = [];\n\n      if (this.hasBindings) {\n        var styleMapInstruction = this.buildStyleMapInstruction(valueConverter);\n\n        if (styleMapInstruction) {\n          instructions.push(styleMapInstruction);\n        }\n\n        var classMapInstruction = this.buildClassMapInstruction(valueConverter);\n\n        if (classMapInstruction) {\n          instructions.push(classMapInstruction);\n        }\n\n        instructions.push.apply(instructions, _toConsumableArray(this._buildStyleInputs(valueConverter)));\n        instructions.push.apply(instructions, _toConsumableArray(this._buildClassInputs(valueConverter)));\n      }\n\n      return instructions;\n    }\n  }]);\n\n  return StylingBuilder;\n}();\n\nfunction registerIntoMap(map, key) {\n  if (!map.has(key)) {\n    map.set(key, map.size);\n  }\n}\n\nfunction parseProperty(name) {\n  var hasOverrideFlag = false;\n  var overrideIndex = name.indexOf(IMPORTANT_FLAG);\n\n  if (overrideIndex !== -1) {\n    name = overrideIndex > 0 ? name.substring(0, overrideIndex) : '';\n    hasOverrideFlag = true;\n  }\n\n  var suffix = null;\n  var property = name;\n  var unitIndex = name.lastIndexOf('.');\n\n  if (unitIndex > 0) {\n    suffix = name.substr(unitIndex + 1);\n    property = name.substring(0, unitIndex);\n  }\n\n  return {\n    property: property,\n    suffix: suffix,\n    hasOverrideFlag: hasOverrideFlag\n  };\n}\n/**\n * Gets the instruction to generate for an interpolated class map.\n * @param interpolation An Interpolation AST\n */\n\n\nfunction getClassMapInterpolationExpression(interpolation) {\n  switch (getInterpolationArgsLength(interpolation)) {\n    case 1:\n      return Identifiers$1.classMap;\n\n    case 3:\n      return Identifiers$1.classMapInterpolate1;\n\n    case 5:\n      return Identifiers$1.classMapInterpolate2;\n\n    case 7:\n      return Identifiers$1.classMapInterpolate3;\n\n    case 9:\n      return Identifiers$1.classMapInterpolate4;\n\n    case 11:\n      return Identifiers$1.classMapInterpolate5;\n\n    case 13:\n      return Identifiers$1.classMapInterpolate6;\n\n    case 15:\n      return Identifiers$1.classMapInterpolate7;\n\n    case 17:\n      return Identifiers$1.classMapInterpolate8;\n\n    default:\n      return Identifiers$1.classMapInterpolateV;\n  }\n}\n/**\n * Gets the instruction to generate for an interpolated style map.\n * @param interpolation An Interpolation AST\n */\n\n\nfunction getStyleMapInterpolationExpression(interpolation) {\n  switch (getInterpolationArgsLength(interpolation)) {\n    case 1:\n      return Identifiers$1.styleMap;\n\n    case 3:\n      return Identifiers$1.styleMapInterpolate1;\n\n    case 5:\n      return Identifiers$1.styleMapInterpolate2;\n\n    case 7:\n      return Identifiers$1.styleMapInterpolate3;\n\n    case 9:\n      return Identifiers$1.styleMapInterpolate4;\n\n    case 11:\n      return Identifiers$1.styleMapInterpolate5;\n\n    case 13:\n      return Identifiers$1.styleMapInterpolate6;\n\n    case 15:\n      return Identifiers$1.styleMapInterpolate7;\n\n    case 17:\n      return Identifiers$1.styleMapInterpolate8;\n\n    default:\n      return Identifiers$1.styleMapInterpolateV;\n  }\n}\n/**\n * Gets the instruction to generate for an interpolated style prop.\n * @param interpolation An Interpolation AST\n */\n\n\nfunction getStylePropInterpolationExpression(interpolation) {\n  switch (getInterpolationArgsLength(interpolation)) {\n    case 1:\n      return Identifiers$1.styleProp;\n\n    case 3:\n      return Identifiers$1.stylePropInterpolate1;\n\n    case 5:\n      return Identifiers$1.stylePropInterpolate2;\n\n    case 7:\n      return Identifiers$1.stylePropInterpolate3;\n\n    case 9:\n      return Identifiers$1.stylePropInterpolate4;\n\n    case 11:\n      return Identifiers$1.stylePropInterpolate5;\n\n    case 13:\n      return Identifiers$1.stylePropInterpolate6;\n\n    case 15:\n      return Identifiers$1.stylePropInterpolate7;\n\n    case 17:\n      return Identifiers$1.stylePropInterpolate8;\n\n    default:\n      return Identifiers$1.stylePropInterpolateV;\n  }\n}\n\nfunction normalizePropName(prop) {\n  return hyphenate(prop);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar TokenType$1;\n\n(function (TokenType) {\n  TokenType[TokenType[\"Character\"] = 0] = \"Character\";\n  TokenType[TokenType[\"Identifier\"] = 1] = \"Identifier\";\n  TokenType[TokenType[\"Keyword\"] = 2] = \"Keyword\";\n  TokenType[TokenType[\"String\"] = 3] = \"String\";\n  TokenType[TokenType[\"Operator\"] = 4] = \"Operator\";\n  TokenType[TokenType[\"Number\"] = 5] = \"Number\";\n  TokenType[TokenType[\"Error\"] = 6] = \"Error\";\n})(TokenType$1 || (TokenType$1 = {}));\n\nvar KEYWORDS = ['var', 'let', 'as', 'null', 'undefined', 'true', 'false', 'if', 'else', 'this'];\n\nvar Lexer = /*#__PURE__*/function () {\n  function Lexer() {\n    _classCallCheck(this, Lexer);\n  }\n\n  _createClass(Lexer, [{\n    key: \"tokenize\",\n    value: function tokenize(text) {\n      var scanner = new _Scanner(text);\n      var tokens = [];\n      var token = scanner.scanToken();\n\n      while (token != null) {\n        tokens.push(token);\n        token = scanner.scanToken();\n      }\n\n      return tokens;\n    }\n  }]);\n\n  return Lexer;\n}();\n\nvar Token$1 = /*#__PURE__*/function () {\n  function Token$1(index, end, type, numValue, strValue) {\n    _classCallCheck(this, Token$1);\n\n    this.index = index;\n    this.end = end;\n    this.type = type;\n    this.numValue = numValue;\n    this.strValue = strValue;\n  }\n\n  _createClass(Token$1, [{\n    key: \"isCharacter\",\n    value: function isCharacter(code) {\n      return this.type == TokenType$1.Character && this.numValue == code;\n    }\n  }, {\n    key: \"isNumber\",\n    value: function isNumber() {\n      return this.type == TokenType$1.Number;\n    }\n  }, {\n    key: \"isString\",\n    value: function isString() {\n      return this.type == TokenType$1.String;\n    }\n  }, {\n    key: \"isOperator\",\n    value: function isOperator(operator) {\n      return this.type == TokenType$1.Operator && this.strValue == operator;\n    }\n  }, {\n    key: \"isIdentifier\",\n    value: function isIdentifier() {\n      return this.type == TokenType$1.Identifier;\n    }\n  }, {\n    key: \"isKeyword\",\n    value: function isKeyword() {\n      return this.type == TokenType$1.Keyword;\n    }\n  }, {\n    key: \"isKeywordLet\",\n    value: function isKeywordLet() {\n      return this.type == TokenType$1.Keyword && this.strValue == 'let';\n    }\n  }, {\n    key: \"isKeywordAs\",\n    value: function isKeywordAs() {\n      return this.type == TokenType$1.Keyword && this.strValue == 'as';\n    }\n  }, {\n    key: \"isKeywordNull\",\n    value: function isKeywordNull() {\n      return this.type == TokenType$1.Keyword && this.strValue == 'null';\n    }\n  }, {\n    key: \"isKeywordUndefined\",\n    value: function isKeywordUndefined() {\n      return this.type == TokenType$1.Keyword && this.strValue == 'undefined';\n    }\n  }, {\n    key: \"isKeywordTrue\",\n    value: function isKeywordTrue() {\n      return this.type == TokenType$1.Keyword && this.strValue == 'true';\n    }\n  }, {\n    key: \"isKeywordFalse\",\n    value: function isKeywordFalse() {\n      return this.type == TokenType$1.Keyword && this.strValue == 'false';\n    }\n  }, {\n    key: \"isKeywordThis\",\n    value: function isKeywordThis() {\n      return this.type == TokenType$1.Keyword && this.strValue == 'this';\n    }\n  }, {\n    key: \"isError\",\n    value: function isError() {\n      return this.type == TokenType$1.Error;\n    }\n  }, {\n    key: \"toNumber\",\n    value: function toNumber() {\n      return this.type == TokenType$1.Number ? this.numValue : -1;\n    }\n  }, {\n    key: \"toString\",\n    value: function toString() {\n      switch (this.type) {\n        case TokenType$1.Character:\n        case TokenType$1.Identifier:\n        case TokenType$1.Keyword:\n        case TokenType$1.Operator:\n        case TokenType$1.String:\n        case TokenType$1.Error:\n          return this.strValue;\n\n        case TokenType$1.Number:\n          return this.numValue.toString();\n\n        default:\n          return null;\n      }\n    }\n  }]);\n\n  return Token$1;\n}();\n\nfunction newCharacterToken(index, end, code) {\n  return new Token$1(index, end, TokenType$1.Character, code, String.fromCharCode(code));\n}\n\nfunction newIdentifierToken(index, end, text) {\n  return new Token$1(index, end, TokenType$1.Identifier, 0, text);\n}\n\nfunction newKeywordToken(index, end, text) {\n  return new Token$1(index, end, TokenType$1.Keyword, 0, text);\n}\n\nfunction newOperatorToken(index, end, text) {\n  return new Token$1(index, end, TokenType$1.Operator, 0, text);\n}\n\nfunction newStringToken(index, end, text) {\n  return new Token$1(index, end, TokenType$1.String, 0, text);\n}\n\nfunction newNumberToken(index, end, n) {\n  return new Token$1(index, end, TokenType$1.Number, n, '');\n}\n\nfunction newErrorToken(index, end, message) {\n  return new Token$1(index, end, TokenType$1.Error, 0, message);\n}\n\nvar EOF = new Token$1(-1, -1, TokenType$1.Character, 0, '');\n\nvar _Scanner = /*#__PURE__*/function () {\n  function _Scanner(input) {\n    _classCallCheck(this, _Scanner);\n\n    this.input = input;\n    this.peek = 0;\n    this.index = -1;\n    this.length = input.length;\n    this.advance();\n  }\n\n  _createClass(_Scanner, [{\n    key: \"advance\",\n    value: function advance() {\n      this.peek = ++this.index >= this.length ? $EOF : this.input.charCodeAt(this.index);\n    }\n  }, {\n    key: \"scanToken\",\n    value: function scanToken() {\n      var input = this.input,\n          length = this.length;\n      var peek = this.peek,\n          index = this.index; // Skip whitespace.\n\n      while (peek <= $SPACE) {\n        if (++index >= length) {\n          peek = $EOF;\n          break;\n        } else {\n          peek = input.charCodeAt(index);\n        }\n      }\n\n      this.peek = peek;\n      this.index = index;\n\n      if (index >= length) {\n        return null;\n      } // Handle identifiers and numbers.\n\n\n      if (isIdentifierStart(peek)) return this.scanIdentifier();\n      if (isDigit(peek)) return this.scanNumber(index);\n      var start = index;\n\n      switch (peek) {\n        case $PERIOD:\n          this.advance();\n          return isDigit(this.peek) ? this.scanNumber(start) : newCharacterToken(start, this.index, $PERIOD);\n\n        case $LPAREN:\n        case $RPAREN:\n        case $LBRACE:\n        case $RBRACE:\n        case $LBRACKET:\n        case $RBRACKET:\n        case $COMMA:\n        case $COLON:\n        case $SEMICOLON:\n          return this.scanCharacter(start, peek);\n\n        case $SQ:\n        case $DQ:\n          return this.scanString();\n\n        case $HASH:\n        case $PLUS:\n        case $MINUS:\n        case $STAR:\n        case $SLASH:\n        case $PERCENT:\n        case $CARET:\n          return this.scanOperator(start, String.fromCharCode(peek));\n\n        case $QUESTION:\n          return this.scanComplexOperator(start, '?', $PERIOD, '.');\n\n        case $LT:\n        case $GT:\n          return this.scanComplexOperator(start, String.fromCharCode(peek), $EQ, '=');\n\n        case $BANG:\n        case $EQ:\n          return this.scanComplexOperator(start, String.fromCharCode(peek), $EQ, '=', $EQ, '=');\n\n        case $AMPERSAND:\n          return this.scanComplexOperator(start, '&', $AMPERSAND, '&');\n\n        case $BAR:\n          return this.scanComplexOperator(start, '|', $BAR, '|');\n\n        case $NBSP:\n          while (isWhitespace(this.peek)) {\n            this.advance();\n          }\n\n          return this.scanToken();\n      }\n\n      this.advance();\n      return this.error(\"Unexpected character [\".concat(String.fromCharCode(peek), \"]\"), 0);\n    }\n  }, {\n    key: \"scanCharacter\",\n    value: function scanCharacter(start, code) {\n      this.advance();\n      return newCharacterToken(start, this.index, code);\n    }\n  }, {\n    key: \"scanOperator\",\n    value: function scanOperator(start, str) {\n      this.advance();\n      return newOperatorToken(start, this.index, str);\n    }\n    /**\n     * Tokenize a 2/3 char long operator\n     *\n     * @param start start index in the expression\n     * @param one first symbol (always part of the operator)\n     * @param twoCode code point for the second symbol\n     * @param two second symbol (part of the operator when the second code point matches)\n     * @param threeCode code point for the third symbol\n     * @param three third symbol (part of the operator when provided and matches source expression)\n     */\n\n  }, {\n    key: \"scanComplexOperator\",\n    value: function scanComplexOperator(start, one, twoCode, two, threeCode, three) {\n      this.advance();\n      var str = one;\n\n      if (this.peek == twoCode) {\n        this.advance();\n        str += two;\n      }\n\n      if (threeCode != null && this.peek == threeCode) {\n        this.advance();\n        str += three;\n      }\n\n      return newOperatorToken(start, this.index, str);\n    }\n  }, {\n    key: \"scanIdentifier\",\n    value: function scanIdentifier() {\n      var start = this.index;\n      this.advance();\n\n      while (isIdentifierPart(this.peek)) {\n        this.advance();\n      }\n\n      var str = this.input.substring(start, this.index);\n      return KEYWORDS.indexOf(str) > -1 ? newKeywordToken(start, this.index, str) : newIdentifierToken(start, this.index, str);\n    }\n  }, {\n    key: \"scanNumber\",\n    value: function scanNumber(start) {\n      var simple = this.index === start;\n      this.advance(); // Skip initial digit.\n\n      while (true) {\n        if (isDigit(this.peek)) {// Do nothing.\n        } else if (this.peek == $PERIOD) {\n          simple = false;\n        } else if (isExponentStart(this.peek)) {\n          this.advance();\n          if (isExponentSign(this.peek)) this.advance();\n          if (!isDigit(this.peek)) return this.error('Invalid exponent', -1);\n          simple = false;\n        } else {\n          break;\n        }\n\n        this.advance();\n      }\n\n      var str = this.input.substring(start, this.index);\n      var value = simple ? parseIntAutoRadix(str) : parseFloat(str);\n      return newNumberToken(start, this.index, value);\n    }\n  }, {\n    key: \"scanString\",\n    value: function scanString() {\n      var start = this.index;\n      var quote = this.peek;\n      this.advance(); // Skip initial quote.\n\n      var buffer = '';\n      var marker = this.index;\n      var input = this.input;\n\n      while (this.peek != quote) {\n        if (this.peek == $BACKSLASH) {\n          buffer += input.substring(marker, this.index);\n          this.advance();\n          var unescapedCode = void 0; // Workaround for TS2.1-introduced type strictness\n\n          this.peek = this.peek;\n\n          if (this.peek == $u) {\n            // 4 character hex code for unicode character.\n            var hex = input.substring(this.index + 1, this.index + 5);\n\n            if (/^[0-9a-f]+$/i.test(hex)) {\n              unescapedCode = parseInt(hex, 16);\n            } else {\n              return this.error(\"Invalid unicode escape [\\\\u\".concat(hex, \"]\"), 0);\n            }\n\n            for (var i = 0; i < 5; i++) {\n              this.advance();\n            }\n          } else {\n            unescapedCode = unescape(this.peek);\n            this.advance();\n          }\n\n          buffer += String.fromCharCode(unescapedCode);\n          marker = this.index;\n        } else if (this.peek == $EOF) {\n          return this.error('Unterminated quote', 0);\n        } else {\n          this.advance();\n        }\n      }\n\n      var last = input.substring(marker, this.index);\n      this.advance(); // Skip terminating quote.\n\n      return newStringToken(start, this.index, buffer + last);\n    }\n  }, {\n    key: \"error\",\n    value: function error(message, offset) {\n      var position = this.index + offset;\n      return newErrorToken(position, this.index, \"Lexer Error: \".concat(message, \" at column \").concat(position, \" in expression [\").concat(this.input, \"]\"));\n    }\n  }]);\n\n  return _Scanner;\n}();\n\nfunction isIdentifierStart(code) {\n  return $a <= code && code <= $z || $A <= code && code <= $Z || code == $_ || code == $$;\n}\n\nfunction isIdentifier(input) {\n  if (input.length == 0) return false;\n  var scanner = new _Scanner(input);\n  if (!isIdentifierStart(scanner.peek)) return false;\n  scanner.advance();\n\n  while (scanner.peek !== $EOF) {\n    if (!isIdentifierPart(scanner.peek)) return false;\n    scanner.advance();\n  }\n\n  return true;\n}\n\nfunction isIdentifierPart(code) {\n  return isAsciiLetter(code) || isDigit(code) || code == $_ || code == $$;\n}\n\nfunction isExponentStart(code) {\n  return code == $e || code == $E;\n}\n\nfunction isExponentSign(code) {\n  return code == $MINUS || code == $PLUS;\n}\n\nfunction isQuote(code) {\n  return code === $SQ || code === $DQ || code === $BT;\n}\n\nfunction unescape(code) {\n  switch (code) {\n    case $n:\n      return $LF;\n\n    case $f:\n      return $FF;\n\n    case $r:\n      return $CR;\n\n    case $t:\n      return $TAB;\n\n    case $v:\n      return $VTAB;\n\n    default:\n      return code;\n  }\n}\n\nfunction parseIntAutoRadix(text) {\n  var result = parseInt(text);\n\n  if (isNaN(result)) {\n    throw new Error('Invalid integer literal when parsing ' + text);\n  }\n\n  return result;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar SplitInterpolation = /*#__PURE__*/_createClass(function SplitInterpolation(strings, stringSpans, expressions, expressionsSpans, offsets) {\n  _classCallCheck(this, SplitInterpolation);\n\n  this.strings = strings;\n  this.stringSpans = stringSpans;\n  this.expressions = expressions;\n  this.expressionsSpans = expressionsSpans;\n  this.offsets = offsets;\n});\n\nvar TemplateBindingParseResult = /*#__PURE__*/_createClass(function TemplateBindingParseResult(templateBindings, warnings, errors) {\n  _classCallCheck(this, TemplateBindingParseResult);\n\n  this.templateBindings = templateBindings;\n  this.warnings = warnings;\n  this.errors = errors;\n});\n\nvar defaultInterpolateRegExp = _createInterpolateRegExp(DEFAULT_INTERPOLATION_CONFIG);\n\nfunction _getInterpolateRegExp(config) {\n  if (config === DEFAULT_INTERPOLATION_CONFIG) {\n    return defaultInterpolateRegExp;\n  } else {\n    return _createInterpolateRegExp(config);\n  }\n}\n\nfunction _createInterpolateRegExp(config) {\n  var pattern = escapeRegExp(config.start) + '([\\\\s\\\\S]*?)' + escapeRegExp(config.end);\n  return new RegExp(pattern, 'g');\n}\n\nvar Parser$1 = /*#__PURE__*/function () {\n  function Parser$1(_lexer) {\n    _classCallCheck(this, Parser$1);\n\n    this._lexer = _lexer;\n    this.errors = [];\n    this.simpleExpressionChecker = SimpleExpressionChecker;\n  }\n\n  _createClass(Parser$1, [{\n    key: \"parseAction\",\n    value: function parseAction(input, location, absoluteOffset) {\n      var interpolationConfig = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : DEFAULT_INTERPOLATION_CONFIG;\n\n      this._checkNoInterpolation(input, location, interpolationConfig);\n\n      var sourceToLex = this._stripComments(input);\n\n      var tokens = this._lexer.tokenize(this._stripComments(input));\n\n      var ast = new _ParseAST(input, location, absoluteOffset, tokens, sourceToLex.length, true, this.errors, input.length - sourceToLex.length).parseChain();\n      return new ASTWithSource(ast, input, location, absoluteOffset, this.errors);\n    }\n  }, {\n    key: \"parseBinding\",\n    value: function parseBinding(input, location, absoluteOffset) {\n      var interpolationConfig = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : DEFAULT_INTERPOLATION_CONFIG;\n\n      var ast = this._parseBindingAst(input, location, absoluteOffset, interpolationConfig);\n\n      return new ASTWithSource(ast, input, location, absoluteOffset, this.errors);\n    }\n  }, {\n    key: \"checkSimpleExpression\",\n    value: function checkSimpleExpression(ast) {\n      var checker = new this.simpleExpressionChecker();\n      ast.visit(checker);\n      return checker.errors;\n    }\n  }, {\n    key: \"parseSimpleBinding\",\n    value: function parseSimpleBinding(input, location, absoluteOffset) {\n      var interpolationConfig = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : DEFAULT_INTERPOLATION_CONFIG;\n\n      var ast = this._parseBindingAst(input, location, absoluteOffset, interpolationConfig);\n\n      var errors = this.checkSimpleExpression(ast);\n\n      if (errors.length > 0) {\n        this._reportError(\"Host binding expression cannot contain \".concat(errors.join(' ')), input, location);\n      }\n\n      return new ASTWithSource(ast, input, location, absoluteOffset, this.errors);\n    }\n  }, {\n    key: \"_reportError\",\n    value: function _reportError(message, input, errLocation, ctxLocation) {\n      this.errors.push(new ParserError(message, input, errLocation, ctxLocation));\n    }\n  }, {\n    key: \"_parseBindingAst\",\n    value: function _parseBindingAst(input, location, absoluteOffset, interpolationConfig) {\n      // Quotes expressions use 3rd-party expression language. We don't want to use\n      // our lexer or parser for that, so we check for that ahead of time.\n      var quote = this._parseQuote(input, location, absoluteOffset);\n\n      if (quote != null) {\n        return quote;\n      }\n\n      this._checkNoInterpolation(input, location, interpolationConfig);\n\n      var sourceToLex = this._stripComments(input);\n\n      var tokens = this._lexer.tokenize(sourceToLex);\n\n      return new _ParseAST(input, location, absoluteOffset, tokens, sourceToLex.length, false, this.errors, input.length - sourceToLex.length).parseChain();\n    }\n  }, {\n    key: \"_parseQuote\",\n    value: function _parseQuote(input, location, absoluteOffset) {\n      if (input == null) return null;\n      var prefixSeparatorIndex = input.indexOf(':');\n      if (prefixSeparatorIndex == -1) return null;\n      var prefix = input.substring(0, prefixSeparatorIndex).trim();\n      if (!isIdentifier(prefix)) return null;\n      var uninterpretedExpression = input.substring(prefixSeparatorIndex + 1);\n      var span = new ParseSpan(0, input.length);\n      return new Quote(span, span.toAbsolute(absoluteOffset), prefix, uninterpretedExpression, location);\n    }\n    /**\n     * Parse microsyntax template expression and return a list of bindings or\n     * parsing errors in case the given expression is invalid.\n     *\n     * For example,\n     * ```\n     *   <div *ngFor=\"let item of items\">\n     *         ^      ^ absoluteValueOffset for `templateValue`\n     *         absoluteKeyOffset for `templateKey`\n     * ```\n     * contains three bindings:\n     * 1. ngFor -> null\n     * 2. item -> NgForOfContext.$implicit\n     * 3. ngForOf -> items\n     *\n     * This is apparent from the de-sugared template:\n     * ```\n     *   <ng-template ngFor let-item [ngForOf]=\"items\">\n     * ```\n     *\n     * @param templateKey name of directive, without the * prefix. For example: ngIf, ngFor\n     * @param templateValue RHS of the microsyntax attribute\n     * @param templateUrl template filename if it's external, component filename if it's inline\n     * @param absoluteKeyOffset start of the `templateKey`\n     * @param absoluteValueOffset start of the `templateValue`\n     */\n\n  }, {\n    key: \"parseTemplateBindings\",\n    value: function parseTemplateBindings(templateKey, templateValue, templateUrl, absoluteKeyOffset, absoluteValueOffset) {\n      var tokens = this._lexer.tokenize(templateValue);\n\n      var parser = new _ParseAST(templateValue, templateUrl, absoluteValueOffset, tokens, templateValue.length, false\n      /* parseAction */\n      , this.errors, 0\n      /* relative offset */\n      );\n      return parser.parseTemplateBindings({\n        source: templateKey,\n        span: new AbsoluteSourceSpan(absoluteKeyOffset, absoluteKeyOffset + templateKey.length)\n      });\n    }\n  }, {\n    key: \"parseInterpolation\",\n    value: function parseInterpolation(input, location, absoluteOffset) {\n      var interpolationConfig = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : DEFAULT_INTERPOLATION_CONFIG;\n      var split = this.splitInterpolation(input, location, interpolationConfig);\n      if (split == null) return null;\n      var expressions = [];\n\n      for (var i = 0; i < split.expressions.length; ++i) {\n        var expressionText = split.expressions[i];\n\n        var sourceToLex = this._stripComments(expressionText);\n\n        var tokens = this._lexer.tokenize(sourceToLex);\n\n        var ast = new _ParseAST(input, location, absoluteOffset, tokens, sourceToLex.length, false, this.errors, split.offsets[i] + (expressionText.length - sourceToLex.length)).parseChain();\n        expressions.push(ast);\n      }\n\n      return this.createInterpolationAst(split.strings, expressions, input, location, absoluteOffset);\n    }\n    /**\n     * Similar to `parseInterpolation`, but treats the provided string as a single expression\n     * element that would normally appear within the interpolation prefix and suffix (`{{` and `}}`).\n     * This is used for parsing the switch expression in ICUs.\n     */\n\n  }, {\n    key: \"parseInterpolationExpression\",\n    value: function parseInterpolationExpression(expression, location, absoluteOffset) {\n      var sourceToLex = this._stripComments(expression);\n\n      var tokens = this._lexer.tokenize(sourceToLex);\n\n      var ast = new _ParseAST(expression, location, absoluteOffset, tokens, sourceToLex.length,\n      /* parseAction */\n      false, this.errors, 0).parseChain();\n      var strings = ['', '']; // The prefix and suffix strings are both empty\n\n      return this.createInterpolationAst(strings, [ast], expression, location, absoluteOffset);\n    }\n  }, {\n    key: \"createInterpolationAst\",\n    value: function createInterpolationAst(strings, expressions, input, location, absoluteOffset) {\n      var span = new ParseSpan(0, input.length);\n      var interpolation = new Interpolation(span, span.toAbsolute(absoluteOffset), strings, expressions);\n      return new ASTWithSource(interpolation, input, location, absoluteOffset, this.errors);\n    }\n    /**\n     * Splits a string of text into \"raw\" text segments and expressions present in interpolations in\n     * the string.\n     * Returns `null` if there are no interpolations, otherwise a\n     * `SplitInterpolation` with splits that look like\n     *   <raw text> <expression> <raw text> ... <raw text> <expression> <raw text>\n     */\n\n  }, {\n    key: \"splitInterpolation\",\n    value: function splitInterpolation(input, location) {\n      var interpolationConfig = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : DEFAULT_INTERPOLATION_CONFIG;\n      var strings = [];\n      var expressions = [];\n      var offsets = [];\n      var stringSpans = [];\n      var expressionSpans = [];\n      var i = 0;\n      var atInterpolation = false;\n      var extendLastString = false;\n      var interpStart = interpolationConfig.start,\n          interpEnd = interpolationConfig.end;\n\n      while (i < input.length) {\n        if (!atInterpolation) {\n          // parse until starting {{\n          var _start4 = i;\n          i = input.indexOf(interpStart, i);\n\n          if (i === -1) {\n            i = input.length;\n          }\n\n          var part = input.substring(_start4, i);\n          strings.push(part);\n          stringSpans.push({\n            start: _start4,\n            end: i\n          });\n          atInterpolation = true;\n        } else {\n          // parse from starting {{ to ending }}\n          var fullStart = i;\n          var exprStart = fullStart + interpStart.length;\n          var exprEnd = input.indexOf(interpEnd, exprStart);\n\n          if (exprEnd === -1) {\n            // Could not find the end of the interpolation; do not parse an expression.\n            // Instead we should extend the content on the last raw string.\n            atInterpolation = false;\n            extendLastString = true;\n            break;\n          }\n\n          var fullEnd = exprEnd + interpEnd.length;\n\n          var _part2 = input.substring(exprStart, exprEnd);\n\n          if (_part2.trim().length > 0) {\n            expressions.push(_part2);\n          } else {\n            this._reportError('Blank expressions are not allowed in interpolated strings', input, \"at column \".concat(i, \" in\"), location);\n\n            expressions.push('$implicit');\n          }\n\n          offsets.push(exprStart);\n          expressionSpans.push({\n            start: fullStart,\n            end: fullEnd\n          });\n          i = fullEnd;\n          atInterpolation = false;\n        }\n      }\n\n      if (!atInterpolation) {\n        // If we are now at a text section, add the remaining content as a raw string.\n        if (extendLastString) {\n          strings[strings.length - 1] += input.substring(i);\n          stringSpans[stringSpans.length - 1].end = input.length;\n        } else {\n          strings.push(input.substring(i));\n          stringSpans.push({\n            start: i,\n            end: input.length\n          });\n        }\n      }\n\n      return expressions.length === 0 ? null : new SplitInterpolation(strings, stringSpans, expressions, expressionSpans, offsets);\n    }\n  }, {\n    key: \"wrapLiteralPrimitive\",\n    value: function wrapLiteralPrimitive(input, location, absoluteOffset) {\n      var span = new ParseSpan(0, input == null ? 0 : input.length);\n      return new ASTWithSource(new LiteralPrimitive(span, span.toAbsolute(absoluteOffset), input), input, location, absoluteOffset, this.errors);\n    }\n  }, {\n    key: \"_stripComments\",\n    value: function _stripComments(input) {\n      var i = this._commentStart(input);\n\n      return i != null ? input.substring(0, i).trim() : input;\n    }\n  }, {\n    key: \"_commentStart\",\n    value: function _commentStart(input) {\n      var outerQuote = null;\n\n      for (var i = 0; i < input.length - 1; i++) {\n        var char = input.charCodeAt(i);\n        var nextChar = input.charCodeAt(i + 1);\n        if (char === $SLASH && nextChar == $SLASH && outerQuote == null) return i;\n\n        if (outerQuote === char) {\n          outerQuote = null;\n        } else if (outerQuote == null && isQuote(char)) {\n          outerQuote = char;\n        }\n      }\n\n      return null;\n    }\n  }, {\n    key: \"_checkNoInterpolation\",\n    value: function _checkNoInterpolation(input, location, interpolationConfig) {\n      var regexp = _getInterpolateRegExp(interpolationConfig);\n\n      var parts = input.split(regexp);\n\n      if (parts.length > 1) {\n        this._reportError(\"Got interpolation (\".concat(interpolationConfig.start).concat(interpolationConfig.end, \") where expression was expected\"), input, \"at column \".concat(this._findInterpolationErrorColumn(parts, 1, interpolationConfig), \" in\"), location);\n      }\n    }\n  }, {\n    key: \"_findInterpolationErrorColumn\",\n    value: function _findInterpolationErrorColumn(parts, partInErrIdx, interpolationConfig) {\n      var errLocation = '';\n\n      for (var j = 0; j < partInErrIdx; j++) {\n        errLocation += j % 2 === 0 ? parts[j] : \"\".concat(interpolationConfig.start).concat(parts[j]).concat(interpolationConfig.end);\n      }\n\n      return errLocation.length;\n    }\n  }]);\n\n  return Parser$1;\n}();\n\nvar IvyParser = /*#__PURE__*/function (_Parser$) {\n  _inherits(IvyParser, _Parser$);\n\n  var _super94 = _createSuper(IvyParser);\n\n  function IvyParser() {\n    var _this154;\n\n    _classCallCheck(this, IvyParser);\n\n    _this154 = _super94.apply(this, arguments);\n    _this154.simpleExpressionChecker = IvySimpleExpressionChecker; //\n\n    return _this154;\n  }\n\n  return _createClass(IvyParser);\n}(Parser$1);\n/** Describes a stateful context an expression parser is in. */\n\n\nvar ParseContextFlags;\n\n(function (ParseContextFlags) {\n  ParseContextFlags[ParseContextFlags[\"None\"] = 0] = \"None\";\n  /**\n   * A Writable context is one in which a value may be written to an lvalue.\n   * For example, after we see a property access, we may expect a write to the\n   * property via the \"=\" operator.\n   *   prop\n   *        ^ possible \"=\" after\n   */\n\n  ParseContextFlags[ParseContextFlags[\"Writable\"] = 1] = \"Writable\";\n})(ParseContextFlags || (ParseContextFlags = {}));\n\nvar _ParseAST = /*#__PURE__*/function () {\n  function _ParseAST(input, location, absoluteOffset, tokens, inputLength, parseAction, errors, offset) {\n    _classCallCheck(this, _ParseAST);\n\n    this.input = input;\n    this.location = location;\n    this.absoluteOffset = absoluteOffset;\n    this.tokens = tokens;\n    this.inputLength = inputLength;\n    this.parseAction = parseAction;\n    this.errors = errors;\n    this.offset = offset;\n    this.rparensExpected = 0;\n    this.rbracketsExpected = 0;\n    this.rbracesExpected = 0;\n    this.context = ParseContextFlags.None; // Cache of expression start and input indeces to the absolute source span they map to, used to\n    // prevent creating superfluous source spans in `sourceSpan`.\n    // A serial of the expression start and input index is used for mapping because both are stateful\n    // and may change for subsequent expressions visited by the parser.\n\n    this.sourceSpanCache = new Map();\n    this.index = 0;\n  }\n\n  _createClass(_ParseAST, [{\n    key: \"peek\",\n    value: function peek(offset) {\n      var i = this.index + offset;\n      return i < this.tokens.length ? this.tokens[i] : EOF;\n    }\n  }, {\n    key: \"next\",\n    get: function get() {\n      return this.peek(0);\n    }\n    /** Whether all the parser input has been processed. */\n\n  }, {\n    key: \"atEOF\",\n    get: function get() {\n      return this.index >= this.tokens.length;\n    }\n    /**\n     * Index of the next token to be processed, or the end of the last token if all have been\n     * processed.\n     */\n\n  }, {\n    key: \"inputIndex\",\n    get: function get() {\n      return this.atEOF ? this.currentEndIndex : this.next.index + this.offset;\n    }\n    /**\n     * End index of the last processed token, or the start of the first token if none have been\n     * processed.\n     */\n\n  }, {\n    key: \"currentEndIndex\",\n    get: function get() {\n      if (this.index > 0) {\n        var curToken = this.peek(-1);\n        return curToken.end + this.offset;\n      } // No tokens have been processed yet; return the next token's start or the length of the input\n      // if there is no token.\n\n\n      if (this.tokens.length === 0) {\n        return this.inputLength + this.offset;\n      }\n\n      return this.next.index + this.offset;\n    }\n    /**\n     * Returns the absolute offset of the start of the current token.\n     */\n\n  }, {\n    key: \"currentAbsoluteOffset\",\n    get: function get() {\n      return this.absoluteOffset + this.inputIndex;\n    }\n  }, {\n    key: \"span\",\n    value: function span(start) {\n      return new ParseSpan(start, this.currentEndIndex);\n    }\n  }, {\n    key: \"sourceSpan\",\n    value: function sourceSpan(start) {\n      var serial = \"\".concat(start, \"@\").concat(this.inputIndex);\n\n      if (!this.sourceSpanCache.has(serial)) {\n        this.sourceSpanCache.set(serial, this.span(start).toAbsolute(this.absoluteOffset));\n      }\n\n      return this.sourceSpanCache.get(serial);\n    }\n  }, {\n    key: \"advance\",\n    value: function advance() {\n      this.index++;\n    }\n    /**\n     * Executes a callback in the provided context.\n     */\n\n  }, {\n    key: \"withContext\",\n    value: function withContext(context, cb) {\n      this.context |= context;\n      var ret = cb();\n      this.context ^= context;\n      return ret;\n    }\n  }, {\n    key: \"consumeOptionalCharacter\",\n    value: function consumeOptionalCharacter(code) {\n      if (this.next.isCharacter(code)) {\n        this.advance();\n        return true;\n      } else {\n        return false;\n      }\n    }\n  }, {\n    key: \"peekKeywordLet\",\n    value: function peekKeywordLet() {\n      return this.next.isKeywordLet();\n    }\n  }, {\n    key: \"peekKeywordAs\",\n    value: function peekKeywordAs() {\n      return this.next.isKeywordAs();\n    }\n    /**\n     * Consumes an expected character, otherwise emits an error about the missing expected character\n     * and skips over the token stream until reaching a recoverable point.\n     *\n     * See `this.error` and `this.skip` for more details.\n     */\n\n  }, {\n    key: \"expectCharacter\",\n    value: function expectCharacter(code) {\n      if (this.consumeOptionalCharacter(code)) return;\n      this.error(\"Missing expected \".concat(String.fromCharCode(code)));\n    }\n  }, {\n    key: \"consumeOptionalOperator\",\n    value: function consumeOptionalOperator(op) {\n      if (this.next.isOperator(op)) {\n        this.advance();\n        return true;\n      } else {\n        return false;\n      }\n    }\n  }, {\n    key: \"expectOperator\",\n    value: function expectOperator(operator) {\n      if (this.consumeOptionalOperator(operator)) return;\n      this.error(\"Missing expected operator \".concat(operator));\n    }\n  }, {\n    key: \"prettyPrintToken\",\n    value: function prettyPrintToken(tok) {\n      return tok === EOF ? 'end of input' : \"token \".concat(tok);\n    }\n  }, {\n    key: \"expectIdentifierOrKeyword\",\n    value: function expectIdentifierOrKeyword() {\n      var n = this.next;\n\n      if (!n.isIdentifier() && !n.isKeyword()) {\n        this.error(\"Unexpected \".concat(this.prettyPrintToken(n), \", expected identifier or keyword\"));\n        return '';\n      }\n\n      this.advance();\n      return n.toString();\n    }\n  }, {\n    key: \"expectIdentifierOrKeywordOrString\",\n    value: function expectIdentifierOrKeywordOrString() {\n      var n = this.next;\n\n      if (!n.isIdentifier() && !n.isKeyword() && !n.isString()) {\n        this.error(\"Unexpected \".concat(this.prettyPrintToken(n), \", expected identifier, keyword, or string\"));\n        return '';\n      }\n\n      this.advance();\n      return n.toString();\n    }\n  }, {\n    key: \"parseChain\",\n    value: function parseChain() {\n      var exprs = [];\n      var start = this.inputIndex;\n\n      while (this.index < this.tokens.length) {\n        var expr = this.parsePipe();\n        exprs.push(expr);\n\n        if (this.consumeOptionalCharacter($SEMICOLON)) {\n          if (!this.parseAction) {\n            this.error('Binding expression cannot contain chained expression');\n          }\n\n          while (this.consumeOptionalCharacter($SEMICOLON)) {} // read all semicolons\n\n        } else if (this.index < this.tokens.length) {\n          this.error(\"Unexpected token '\".concat(this.next, \"'\"));\n        }\n      }\n\n      if (exprs.length == 0) return new EmptyExpr(this.span(start), this.sourceSpan(start));\n      if (exprs.length == 1) return exprs[0];\n      return new Chain(this.span(start), this.sourceSpan(start), exprs);\n    }\n  }, {\n    key: \"parsePipe\",\n    value: function parsePipe() {\n      var result = this.parseExpression();\n\n      if (this.consumeOptionalOperator('|')) {\n        if (this.parseAction) {\n          this.error('Cannot have a pipe in an action expression');\n        }\n\n        do {\n          var nameStart = this.inputIndex;\n          var name = this.expectIdentifierOrKeyword();\n          var nameSpan = this.sourceSpan(nameStart);\n          var args = [];\n\n          while (this.consumeOptionalCharacter($COLON)) {\n            args.push(this.parseExpression());\n          }\n\n          var _start5 = result.span.start;\n          result = new BindingPipe(this.span(_start5), this.sourceSpan(_start5), result, name, args, nameSpan);\n        } while (this.consumeOptionalOperator('|'));\n      }\n\n      return result;\n    }\n  }, {\n    key: \"parseExpression\",\n    value: function parseExpression() {\n      return this.parseConditional();\n    }\n  }, {\n    key: \"parseConditional\",\n    value: function parseConditional() {\n      var start = this.inputIndex;\n      var result = this.parseLogicalOr();\n\n      if (this.consumeOptionalOperator('?')) {\n        var yes = this.parsePipe();\n        var no;\n\n        if (!this.consumeOptionalCharacter($COLON)) {\n          var end = this.inputIndex;\n          var expression = this.input.substring(start, end);\n          this.error(\"Conditional expression \".concat(expression, \" requires all 3 expressions\"));\n          no = new EmptyExpr(this.span(start), this.sourceSpan(start));\n        } else {\n          no = this.parsePipe();\n        }\n\n        return new Conditional(this.span(start), this.sourceSpan(start), result, yes, no);\n      } else {\n        return result;\n      }\n    }\n  }, {\n    key: \"parseLogicalOr\",\n    value: function parseLogicalOr() {\n      // '||'\n      var result = this.parseLogicalAnd();\n\n      while (this.consumeOptionalOperator('||')) {\n        var right = this.parseLogicalAnd();\n        var _start6 = result.span.start;\n        result = new Binary(this.span(_start6), this.sourceSpan(_start6), '||', result, right);\n      }\n\n      return result;\n    }\n  }, {\n    key: \"parseLogicalAnd\",\n    value: function parseLogicalAnd() {\n      // '&&'\n      var result = this.parseEquality();\n\n      while (this.consumeOptionalOperator('&&')) {\n        var right = this.parseEquality();\n        var _start7 = result.span.start;\n        result = new Binary(this.span(_start7), this.sourceSpan(_start7), '&&', result, right);\n      }\n\n      return result;\n    }\n  }, {\n    key: \"parseEquality\",\n    value: function parseEquality() {\n      // '==','!=','===','!=='\n      var result = this.parseRelational();\n\n      while (this.next.type == TokenType$1.Operator) {\n        var operator = this.next.strValue;\n\n        switch (operator) {\n          case '==':\n          case '===':\n          case '!=':\n          case '!==':\n            this.advance();\n            var right = this.parseRelational();\n            var _start8 = result.span.start;\n            result = new Binary(this.span(_start8), this.sourceSpan(_start8), operator, result, right);\n            continue;\n        }\n\n        break;\n      }\n\n      return result;\n    }\n  }, {\n    key: \"parseRelational\",\n    value: function parseRelational() {\n      // '<', '>', '<=', '>='\n      var result = this.parseAdditive();\n\n      while (this.next.type == TokenType$1.Operator) {\n        var operator = this.next.strValue;\n\n        switch (operator) {\n          case '<':\n          case '>':\n          case '<=':\n          case '>=':\n            this.advance();\n            var right = this.parseAdditive();\n            var _start9 = result.span.start;\n            result = new Binary(this.span(_start9), this.sourceSpan(_start9), operator, result, right);\n            continue;\n        }\n\n        break;\n      }\n\n      return result;\n    }\n  }, {\n    key: \"parseAdditive\",\n    value: function parseAdditive() {\n      // '+', '-'\n      var result = this.parseMultiplicative();\n\n      while (this.next.type == TokenType$1.Operator) {\n        var operator = this.next.strValue;\n\n        switch (operator) {\n          case '+':\n          case '-':\n            this.advance();\n            var right = this.parseMultiplicative();\n            var _start10 = result.span.start;\n            result = new Binary(this.span(_start10), this.sourceSpan(_start10), operator, result, right);\n            continue;\n        }\n\n        break;\n      }\n\n      return result;\n    }\n  }, {\n    key: \"parseMultiplicative\",\n    value: function parseMultiplicative() {\n      // '*', '%', '/'\n      var result = this.parsePrefix();\n\n      while (this.next.type == TokenType$1.Operator) {\n        var operator = this.next.strValue;\n\n        switch (operator) {\n          case '*':\n          case '%':\n          case '/':\n            this.advance();\n            var right = this.parsePrefix();\n            var _start11 = result.span.start;\n            result = new Binary(this.span(_start11), this.sourceSpan(_start11), operator, result, right);\n            continue;\n        }\n\n        break;\n      }\n\n      return result;\n    }\n  }, {\n    key: \"parsePrefix\",\n    value: function parsePrefix() {\n      if (this.next.type == TokenType$1.Operator) {\n        var _start12 = this.inputIndex;\n        var operator = this.next.strValue;\n        var result;\n\n        switch (operator) {\n          case '+':\n            this.advance();\n            result = this.parsePrefix();\n            return Unary.createPlus(this.span(_start12), this.sourceSpan(_start12), result);\n\n          case '-':\n            this.advance();\n            result = this.parsePrefix();\n            return Unary.createMinus(this.span(_start12), this.sourceSpan(_start12), result);\n\n          case '!':\n            this.advance();\n            result = this.parsePrefix();\n            return new PrefixNot(this.span(_start12), this.sourceSpan(_start12), result);\n        }\n      }\n\n      return this.parseCallChain();\n    }\n  }, {\n    key: \"parseCallChain\",\n    value: function parseCallChain() {\n      var _this155 = this;\n\n      var result = this.parsePrimary();\n      var resultStart = result.span.start;\n\n      while (true) {\n        if (this.consumeOptionalCharacter($PERIOD)) {\n          result = this.parseAccessMemberOrMethodCall(result, false);\n        } else if (this.consumeOptionalOperator('?.')) {\n          result = this.parseAccessMemberOrMethodCall(result, true);\n        } else if (this.consumeOptionalCharacter($LBRACKET)) {\n          this.withContext(ParseContextFlags.Writable, function () {\n            _this155.rbracketsExpected++;\n\n            var key = _this155.parsePipe();\n\n            if (key instanceof EmptyExpr) {\n              _this155.error(\"Key access cannot be empty\");\n            }\n\n            _this155.rbracketsExpected--;\n\n            _this155.expectCharacter($RBRACKET);\n\n            if (_this155.consumeOptionalOperator('=')) {\n              var value = _this155.parseConditional();\n\n              result = new KeyedWrite(_this155.span(resultStart), _this155.sourceSpan(resultStart), result, key, value);\n            } else {\n              result = new KeyedRead(_this155.span(resultStart), _this155.sourceSpan(resultStart), result, key);\n            }\n          });\n        } else if (this.consumeOptionalCharacter($LPAREN)) {\n          this.rparensExpected++;\n          var args = this.parseCallArguments();\n          this.rparensExpected--;\n          this.expectCharacter($RPAREN);\n          result = new FunctionCall(this.span(resultStart), this.sourceSpan(resultStart), result, args);\n        } else if (this.consumeOptionalOperator('!')) {\n          result = new NonNullAssert(this.span(resultStart), this.sourceSpan(resultStart), result);\n        } else {\n          return result;\n        }\n      }\n    }\n  }, {\n    key: \"parsePrimary\",\n    value: function parsePrimary() {\n      var start = this.inputIndex;\n\n      if (this.consumeOptionalCharacter($LPAREN)) {\n        this.rparensExpected++;\n        var result = this.parsePipe();\n        this.rparensExpected--;\n        this.expectCharacter($RPAREN);\n        return result;\n      } else if (this.next.isKeywordNull()) {\n        this.advance();\n        return new LiteralPrimitive(this.span(start), this.sourceSpan(start), null);\n      } else if (this.next.isKeywordUndefined()) {\n        this.advance();\n        return new LiteralPrimitive(this.span(start), this.sourceSpan(start), void 0);\n      } else if (this.next.isKeywordTrue()) {\n        this.advance();\n        return new LiteralPrimitive(this.span(start), this.sourceSpan(start), true);\n      } else if (this.next.isKeywordFalse()) {\n        this.advance();\n        return new LiteralPrimitive(this.span(start), this.sourceSpan(start), false);\n      } else if (this.next.isKeywordThis()) {\n        this.advance();\n        return new ThisReceiver(this.span(start), this.sourceSpan(start));\n      } else if (this.consumeOptionalCharacter($LBRACKET)) {\n        this.rbracketsExpected++;\n        var elements = this.parseExpressionList($RBRACKET);\n        this.rbracketsExpected--;\n        this.expectCharacter($RBRACKET);\n        return new LiteralArray(this.span(start), this.sourceSpan(start), elements);\n      } else if (this.next.isCharacter($LBRACE)) {\n        return this.parseLiteralMap();\n      } else if (this.next.isIdentifier()) {\n        return this.parseAccessMemberOrMethodCall(new ImplicitReceiver(this.span(start), this.sourceSpan(start)), false);\n      } else if (this.next.isNumber()) {\n        var value = this.next.toNumber();\n        this.advance();\n        return new LiteralPrimitive(this.span(start), this.sourceSpan(start), value);\n      } else if (this.next.isString()) {\n        var literalValue = this.next.toString();\n        this.advance();\n        return new LiteralPrimitive(this.span(start), this.sourceSpan(start), literalValue);\n      } else if (this.index >= this.tokens.length) {\n        this.error(\"Unexpected end of expression: \".concat(this.input));\n        return new EmptyExpr(this.span(start), this.sourceSpan(start));\n      } else {\n        this.error(\"Unexpected token \".concat(this.next));\n        return new EmptyExpr(this.span(start), this.sourceSpan(start));\n      }\n    }\n  }, {\n    key: \"parseExpressionList\",\n    value: function parseExpressionList(terminator) {\n      var result = [];\n\n      if (!this.next.isCharacter(terminator)) {\n        do {\n          result.push(this.parsePipe());\n        } while (this.consumeOptionalCharacter($COMMA));\n      }\n\n      return result;\n    }\n  }, {\n    key: \"parseLiteralMap\",\n    value: function parseLiteralMap() {\n      var keys = [];\n      var values = [];\n      var start = this.inputIndex;\n      this.expectCharacter($LBRACE);\n\n      if (!this.consumeOptionalCharacter($RBRACE)) {\n        this.rbracesExpected++;\n\n        do {\n          var quoted = this.next.isString();\n          var key = this.expectIdentifierOrKeywordOrString();\n          keys.push({\n            key: key,\n            quoted: quoted\n          });\n          this.expectCharacter($COLON);\n          values.push(this.parsePipe());\n        } while (this.consumeOptionalCharacter($COMMA));\n\n        this.rbracesExpected--;\n        this.expectCharacter($RBRACE);\n      }\n\n      return new LiteralMap(this.span(start), this.sourceSpan(start), keys, values);\n    }\n  }, {\n    key: \"parseAccessMemberOrMethodCall\",\n    value: function parseAccessMemberOrMethodCall(receiver) {\n      var isSafe = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n      var start = receiver.span.start;\n      var nameStart = this.inputIndex;\n      var id = this.expectIdentifierOrKeyword();\n      var nameSpan = this.sourceSpan(nameStart);\n\n      if (this.consumeOptionalCharacter($LPAREN)) {\n        this.rparensExpected++;\n        var args = this.parseCallArguments();\n        this.expectCharacter($RPAREN);\n        this.rparensExpected--;\n        var span = this.span(start);\n        var sourceSpan = this.sourceSpan(start);\n        return isSafe ? new SafeMethodCall(span, sourceSpan, nameSpan, receiver, id, args) : new MethodCall(span, sourceSpan, nameSpan, receiver, id, args);\n      } else {\n        if (isSafe) {\n          if (this.consumeOptionalOperator('=')) {\n            this.error('The \\'?.\\' operator cannot be used in the assignment');\n            return new EmptyExpr(this.span(start), this.sourceSpan(start));\n          } else {\n            return new SafePropertyRead(this.span(start), this.sourceSpan(start), nameSpan, receiver, id);\n          }\n        } else {\n          if (this.consumeOptionalOperator('=')) {\n            if (!this.parseAction) {\n              this.error('Bindings cannot contain assignments');\n              return new EmptyExpr(this.span(start), this.sourceSpan(start));\n            }\n\n            var value = this.parseConditional();\n            return new PropertyWrite(this.span(start), this.sourceSpan(start), nameSpan, receiver, id, value);\n          } else {\n            return new PropertyRead(this.span(start), this.sourceSpan(start), nameSpan, receiver, id);\n          }\n        }\n      }\n    }\n  }, {\n    key: \"parseCallArguments\",\n    value: function parseCallArguments() {\n      if (this.next.isCharacter($RPAREN)) return [];\n      var positionals = [];\n\n      do {\n        positionals.push(this.parsePipe());\n      } while (this.consumeOptionalCharacter($COMMA));\n\n      return positionals;\n    }\n    /**\n     * Parses an identifier, a keyword, a string with an optional `-` in between,\n     * and returns the string along with its absolute source span.\n     */\n\n  }, {\n    key: \"expectTemplateBindingKey\",\n    value: function expectTemplateBindingKey() {\n      var result = '';\n      var operatorFound = false;\n      var start = this.currentAbsoluteOffset;\n\n      do {\n        result += this.expectIdentifierOrKeywordOrString();\n        operatorFound = this.consumeOptionalOperator('-');\n\n        if (operatorFound) {\n          result += '-';\n        }\n      } while (operatorFound);\n\n      return {\n        source: result,\n        span: new AbsoluteSourceSpan(start, start + result.length)\n      };\n    }\n    /**\n     * Parse microsyntax template expression and return a list of bindings or\n     * parsing errors in case the given expression is invalid.\n     *\n     * For example,\n     * ```\n     *   <div *ngFor=\"let item of items; index as i; trackBy: func\">\n     * ```\n     * contains five bindings:\n     * 1. ngFor -> null\n     * 2. item -> NgForOfContext.$implicit\n     * 3. ngForOf -> items\n     * 4. i -> NgForOfContext.index\n     * 5. ngForTrackBy -> func\n     *\n     * For a full description of the microsyntax grammar, see\n     * https://gist.github.com/mhevery/d3530294cff2e4a1b3fe15ff75d08855\n     *\n     * @param templateKey name of the microsyntax directive, like ngIf, ngFor,\n     * without the *, along with its absolute span.\n     */\n\n  }, {\n    key: \"parseTemplateBindings\",\n    value: function parseTemplateBindings(templateKey) {\n      var bindings = []; // The first binding is for the template key itself\n      // In *ngFor=\"let item of items\", key = \"ngFor\", value = null\n      // In *ngIf=\"cond | pipe\", key = \"ngIf\", value = \"cond | pipe\"\n\n      bindings.push.apply(bindings, _toConsumableArray(this.parseDirectiveKeywordBindings(templateKey)));\n\n      while (this.index < this.tokens.length) {\n        // If it starts with 'let', then this must be variable declaration\n        var letBinding = this.parseLetBinding();\n\n        if (letBinding) {\n          bindings.push(letBinding);\n        } else {\n          // Two possible cases here, either `value \"as\" key` or\n          // \"directive-keyword expression\". We don't know which case, but both\n          // \"value\" and \"directive-keyword\" are template binding key, so consume\n          // the key first.\n          var key = this.expectTemplateBindingKey(); // Peek at the next token, if it is \"as\" then this must be variable\n          // declaration.\n\n          var binding = this.parseAsBinding(key);\n\n          if (binding) {\n            bindings.push(binding);\n          } else {\n            // Otherwise the key must be a directive keyword, like \"of\". Transform\n            // the key to actual key. Eg. of -> ngForOf, trackBy -> ngForTrackBy\n            key.source = templateKey.source + key.source[0].toUpperCase() + key.source.substring(1);\n            bindings.push.apply(bindings, _toConsumableArray(this.parseDirectiveKeywordBindings(key)));\n          }\n        }\n\n        this.consumeStatementTerminator();\n      }\n\n      return new TemplateBindingParseResult(bindings, []\n      /* warnings */\n      , this.errors);\n    }\n    /**\n     * Parse a directive keyword, followed by a mandatory expression.\n     * For example, \"of items\", \"trackBy: func\".\n     * The bindings are: ngForOf -> items, ngForTrackBy -> func\n     * There could be an optional \"as\" binding that follows the expression.\n     * For example,\n     * ```\n     *   *ngFor=\"let item of items | slice:0:1 as collection\".\n     *                    ^^ ^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^\n     *               keyword    bound target   optional 'as' binding\n     * ```\n     *\n     * @param key binding key, for example, ngFor, ngIf, ngForOf, along with its\n     * absolute span.\n     */\n\n  }, {\n    key: \"parseDirectiveKeywordBindings\",\n    value: function parseDirectiveKeywordBindings(key) {\n      var bindings = [];\n      this.consumeOptionalCharacter($COLON); // trackBy: trackByFunction\n\n      var value = this.getDirectiveBoundTarget();\n      var spanEnd = this.currentAbsoluteOffset; // The binding could optionally be followed by \"as\". For example,\n      // *ngIf=\"cond | pipe as x\". In this case, the key in the \"as\" binding\n      // is \"x\" and the value is the template key itself (\"ngIf\"). Note that the\n      // 'key' in the current context now becomes the \"value\" in the next binding.\n\n      var asBinding = this.parseAsBinding(key);\n\n      if (!asBinding) {\n        this.consumeStatementTerminator();\n        spanEnd = this.currentAbsoluteOffset;\n      }\n\n      var sourceSpan = new AbsoluteSourceSpan(key.span.start, spanEnd);\n      bindings.push(new ExpressionBinding(sourceSpan, key, value));\n\n      if (asBinding) {\n        bindings.push(asBinding);\n      }\n\n      return bindings;\n    }\n    /**\n     * Return the expression AST for the bound target of a directive keyword\n     * binding. For example,\n     * ```\n     *   *ngIf=\"condition | pipe\"\n     *          ^^^^^^^^^^^^^^^^ bound target for \"ngIf\"\n     *   *ngFor=\"let item of items\"\n     *                       ^^^^^ bound target for \"ngForOf\"\n     * ```\n     */\n\n  }, {\n    key: \"getDirectiveBoundTarget\",\n    value: function getDirectiveBoundTarget() {\n      if (this.next === EOF || this.peekKeywordAs() || this.peekKeywordLet()) {\n        return null;\n      }\n\n      var ast = this.parsePipe(); // example: \"condition | async\"\n\n      var _ast$span = ast.span,\n          start = _ast$span.start,\n          end = _ast$span.end;\n      var value = this.input.substring(start, end);\n      return new ASTWithSource(ast, value, this.location, this.absoluteOffset + start, this.errors);\n    }\n    /**\n     * Return the binding for a variable declared using `as`. Note that the order\n     * of the key-value pair in this declaration is reversed. For example,\n     * ```\n     *   *ngFor=\"let item of items; index as i\"\n     *                              ^^^^^    ^\n     *                              value    key\n     * ```\n     *\n     * @param value name of the value in the declaration, \"ngIf\" in the example\n     * above, along with its absolute span.\n     */\n\n  }, {\n    key: \"parseAsBinding\",\n    value: function parseAsBinding(value) {\n      if (!this.peekKeywordAs()) {\n        return null;\n      }\n\n      this.advance(); // consume the 'as' keyword\n\n      var key = this.expectTemplateBindingKey();\n      this.consumeStatementTerminator();\n      var sourceSpan = new AbsoluteSourceSpan(value.span.start, this.currentAbsoluteOffset);\n      return new VariableBinding(sourceSpan, key, value);\n    }\n    /**\n     * Return the binding for a variable declared using `let`. For example,\n     * ```\n     *   *ngFor=\"let item of items; let i=index;\"\n     *           ^^^^^^^^           ^^^^^^^^^^^\n     * ```\n     * In the first binding, `item` is bound to `NgForOfContext.$implicit`.\n     * In the second binding, `i` is bound to `NgForOfContext.index`.\n     */\n\n  }, {\n    key: \"parseLetBinding\",\n    value: function parseLetBinding() {\n      if (!this.peekKeywordLet()) {\n        return null;\n      }\n\n      var spanStart = this.currentAbsoluteOffset;\n      this.advance(); // consume the 'let' keyword\n\n      var key = this.expectTemplateBindingKey();\n      var value = null;\n\n      if (this.consumeOptionalOperator('=')) {\n        value = this.expectTemplateBindingKey();\n      }\n\n      this.consumeStatementTerminator();\n      var sourceSpan = new AbsoluteSourceSpan(spanStart, this.currentAbsoluteOffset);\n      return new VariableBinding(sourceSpan, key, value);\n    }\n    /**\n     * Consume the optional statement terminator: semicolon or comma.\n     */\n\n  }, {\n    key: \"consumeStatementTerminator\",\n    value: function consumeStatementTerminator() {\n      this.consumeOptionalCharacter($SEMICOLON) || this.consumeOptionalCharacter($COMMA);\n    }\n    /**\n     * Records an error and skips over the token stream until reaching a recoverable point. See\n     * `this.skip` for more details on token skipping.\n     */\n\n  }, {\n    key: \"error\",\n    value: function error(message) {\n      var index = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      this.errors.push(new ParserError(message, this.input, this.locationText(index), this.location));\n      this.skip();\n    }\n  }, {\n    key: \"locationText\",\n    value: function locationText() {\n      var index = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;\n      if (index == null) index = this.index;\n      return index < this.tokens.length ? \"at column \".concat(this.tokens[index].index + 1, \" in\") : \"at the end of the expression\";\n    }\n    /**\n     * Error recovery should skip tokens until it encounters a recovery point. skip() treats\n     * the end of input and a ';' as unconditionally a recovery point. It also treats ')',\n     * '}' and ']' as conditional recovery points if one of calling productions is expecting\n     * one of these symbols. This allows skip() to recover from errors such as '(a.) + 1' allowing\n     * more of the AST to be retained (it doesn't skip any tokens as the ')' is retained because\n     * of the '(' begins an '(' <expr> ')' production). The recovery points of grouping symbols\n     * must be conditional as they must be skipped if none of the calling productions are not\n     * expecting the closing token else we will never make progress in the case of an\n     * extraneous group closing symbol (such as a stray ')'). This is not the case for ';' because\n     * parseChain() is always the root production and it expects a ';'.\n     *\n     * Furthermore, the presence of a stateful context can add more recovery points.\n     *   - in a `Writable` context, we are able to recover after seeing the `=` operator, which\n     *     signals the presence of an independent rvalue expression following the `=` operator.\n     *\n     * If a production expects one of these token it increments the corresponding nesting count,\n     * and then decrements it just prior to checking if the token is in the input.\n     */\n\n  }, {\n    key: \"skip\",\n    value: function skip() {\n      var n = this.next;\n\n      while (this.index < this.tokens.length && !n.isCharacter($SEMICOLON) && (this.rparensExpected <= 0 || !n.isCharacter($RPAREN)) && (this.rbracesExpected <= 0 || !n.isCharacter($RBRACE)) && (this.rbracketsExpected <= 0 || !n.isCharacter($RBRACKET)) && (!(this.context & ParseContextFlags.Writable) || !n.isOperator('='))) {\n        if (this.next.isError()) {\n          this.errors.push(new ParserError(this.next.toString(), this.input, this.locationText(), this.location));\n        }\n\n        this.advance();\n        n = this.next;\n      }\n    }\n  }]);\n\n  return _ParseAST;\n}();\n\nvar SimpleExpressionChecker = /*#__PURE__*/function () {\n  function SimpleExpressionChecker() {\n    _classCallCheck(this, SimpleExpressionChecker);\n\n    this.errors = [];\n  }\n\n  _createClass(SimpleExpressionChecker, [{\n    key: \"visitImplicitReceiver\",\n    value: function visitImplicitReceiver(ast, context) {}\n  }, {\n    key: \"visitThisReceiver\",\n    value: function visitThisReceiver(ast, context) {}\n  }, {\n    key: \"visitInterpolation\",\n    value: function visitInterpolation(ast, context) {}\n  }, {\n    key: \"visitLiteralPrimitive\",\n    value: function visitLiteralPrimitive(ast, context) {}\n  }, {\n    key: \"visitPropertyRead\",\n    value: function visitPropertyRead(ast, context) {}\n  }, {\n    key: \"visitPropertyWrite\",\n    value: function visitPropertyWrite(ast, context) {}\n  }, {\n    key: \"visitSafePropertyRead\",\n    value: function visitSafePropertyRead(ast, context) {}\n  }, {\n    key: \"visitMethodCall\",\n    value: function visitMethodCall(ast, context) {}\n  }, {\n    key: \"visitSafeMethodCall\",\n    value: function visitSafeMethodCall(ast, context) {}\n  }, {\n    key: \"visitFunctionCall\",\n    value: function visitFunctionCall(ast, context) {}\n  }, {\n    key: \"visitLiteralArray\",\n    value: function visitLiteralArray(ast, context) {\n      this.visitAll(ast.expressions, context);\n    }\n  }, {\n    key: \"visitLiteralMap\",\n    value: function visitLiteralMap(ast, context) {\n      this.visitAll(ast.values, context);\n    }\n  }, {\n    key: \"visitUnary\",\n    value: function visitUnary(ast, context) {}\n  }, {\n    key: \"visitBinary\",\n    value: function visitBinary(ast, context) {}\n  }, {\n    key: \"visitPrefixNot\",\n    value: function visitPrefixNot(ast, context) {}\n  }, {\n    key: \"visitNonNullAssert\",\n    value: function visitNonNullAssert(ast, context) {}\n  }, {\n    key: \"visitConditional\",\n    value: function visitConditional(ast, context) {}\n  }, {\n    key: \"visitPipe\",\n    value: function visitPipe(ast, context) {\n      this.errors.push('pipes');\n    }\n  }, {\n    key: \"visitKeyedRead\",\n    value: function visitKeyedRead(ast, context) {}\n  }, {\n    key: \"visitKeyedWrite\",\n    value: function visitKeyedWrite(ast, context) {}\n  }, {\n    key: \"visitAll\",\n    value: function visitAll(asts, context) {\n      var _this156 = this;\n\n      return asts.map(function (node) {\n        return node.visit(_this156, context);\n      });\n    }\n  }, {\n    key: \"visitChain\",\n    value: function visitChain(ast, context) {}\n  }, {\n    key: \"visitQuote\",\n    value: function visitQuote(ast, context) {}\n  }]);\n\n  return SimpleExpressionChecker;\n}();\n/**\n * This class implements SimpleExpressionChecker used in View Engine and performs more strict checks\n * to make sure host bindings do not contain pipes. In View Engine, having pipes in host bindings is\n * not supported as well, but in some cases (like `!(value | async)`) the error is not triggered at\n * compile time. In order to preserve View Engine behavior, more strict checks are introduced for\n * Ivy mode only.\n */\n\n\nvar IvySimpleExpressionChecker = /*#__PURE__*/function (_RecursiveAstVisitor$2) {\n  _inherits(IvySimpleExpressionChecker, _RecursiveAstVisitor$2);\n\n  var _super95 = _createSuper(IvySimpleExpressionChecker);\n\n  function IvySimpleExpressionChecker() {\n    var _this157;\n\n    _classCallCheck(this, IvySimpleExpressionChecker);\n\n    _this157 = _super95.apply(this, arguments);\n    _this157.errors = [];\n    return _this157;\n  }\n\n  _createClass(IvySimpleExpressionChecker, [{\n    key: \"visitPipe\",\n    value: function visitPipe() {\n      this.errors.push('pipes');\n    }\n  }]);\n\n  return IvySimpleExpressionChecker;\n}(RecursiveAstVisitor$1);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// =================================================================================================\n// =================================================================================================\n// =========== S T O P   -  S T O P   -  S T O P   -  S T O P   -  S T O P   -  S T O P  ===========\n// =================================================================================================\n// =================================================================================================\n//\n//        DO NOT EDIT THIS LIST OF SECURITY SENSITIVE PROPERTIES WITHOUT A SECURITY REVIEW!\n//                               Reach out to mprobst for details.\n//\n// =================================================================================================\n\n/** Map from tagName|propertyName SecurityContext. Properties applying to all tags use '*'. */\n\n\nvar _SECURITY_SCHEMA;\n\nfunction SECURITY_SCHEMA() {\n  if (!_SECURITY_SCHEMA) {\n    _SECURITY_SCHEMA = {}; // Case is insignificant below, all element and attribute names are lower-cased for lookup.\n\n    registerContext(SecurityContext.HTML, ['iframe|srcdoc', '*|innerHTML', '*|outerHTML']);\n    registerContext(SecurityContext.STYLE, ['*|style']); // NB: no SCRIPT contexts here, they are never allowed due to the parser stripping them.\n\n    registerContext(SecurityContext.URL, ['*|formAction', 'area|href', 'area|ping', 'audio|src', 'a|href', 'a|ping', 'blockquote|cite', 'body|background', 'del|cite', 'form|action', 'img|src', 'img|srcset', 'input|src', 'ins|cite', 'q|cite', 'source|src', 'source|srcset', 'track|src', 'video|poster', 'video|src']);\n    registerContext(SecurityContext.RESOURCE_URL, ['applet|code', 'applet|codebase', 'base|href', 'embed|src', 'frame|src', 'head|profile', 'html|manifest', 'iframe|src', 'link|href', 'media|src', 'object|codebase', 'object|data', 'script|src']);\n  }\n\n  return _SECURITY_SCHEMA;\n}\n\nfunction registerContext(ctx, specs) {\n  var _iterator11 = _createForOfIteratorHelper(specs),\n      _step11;\n\n  try {\n    for (_iterator11.s(); !(_step11 = _iterator11.n()).done;) {\n      var spec = _step11.value;\n      _SECURITY_SCHEMA[spec.toLowerCase()] = ctx;\n    }\n  } catch (err) {\n    _iterator11.e(err);\n  } finally {\n    _iterator11.f();\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ElementSchemaRegistry = /*#__PURE__*/_createClass(function ElementSchemaRegistry() {\n  _classCallCheck(this, ElementSchemaRegistry);\n});\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar BOOLEAN = 'boolean';\nvar NUMBER = 'number';\nvar STRING = 'string';\nvar OBJECT = 'object';\n/**\n * This array represents the DOM schema. It encodes inheritance, properties, and events.\n *\n * ## Overview\n *\n * Each line represents one kind of element. The `element_inheritance` and properties are joined\n * using `element_inheritance|properties` syntax.\n *\n * ## Element Inheritance\n *\n * The `element_inheritance` can be further subdivided as `element1,element2,...^parentElement`.\n * Here the individual elements are separated by `,` (commas). Every element in the list\n * has identical properties.\n *\n * An `element` may inherit additional properties from `parentElement` If no `^parentElement` is\n * specified then `\"\"` (blank) element is assumed.\n *\n * NOTE: The blank element inherits from root `[Element]` element, the super element of all\n * elements.\n *\n * NOTE an element prefix such as `:svg:` has no special meaning to the schema.\n *\n * ## Properties\n *\n * Each element has a set of properties separated by `,` (commas). Each property can be prefixed\n * by a special character designating its type:\n *\n * - (no prefix): property is a string.\n * - `*`: property represents an event.\n * - `!`: property is a boolean.\n * - `#`: property is a number.\n * - `%`: property is an object.\n *\n * ## Query\n *\n * The class creates an internal squas representation which allows to easily answer the query of\n * if a given property exist on a given element.\n *\n * NOTE: We don't yet support querying for types or events.\n * NOTE: This schema is auto extracted from `schema_extractor.ts` located in the test folder,\n *       see dom_element_schema_registry_spec.ts\n */\n// =================================================================================================\n// =================================================================================================\n// =========== S T O P   -  S T O P   -  S T O P   -  S T O P   -  S T O P   -  S T O P  ===========\n// =================================================================================================\n// =================================================================================================\n//\n//                       DO NOT EDIT THIS DOM SCHEMA WITHOUT A SECURITY REVIEW!\n//\n// Newly added properties must be security reviewed and assigned an appropriate SecurityContext in\n// dom_security_schema.ts. Reach out to mprobst & rjamet for details.\n//\n// =================================================================================================\n\nvar SCHEMA = ['[Element]|textContent,%classList,className,id,innerHTML,*beforecopy,*beforecut,*beforepaste,*copy,*cut,*paste,*search,*selectstart,*webkitfullscreenchange,*webkitfullscreenerror,*wheel,outerHTML,#scrollLeft,#scrollTop,slot' +\n/* added manually to avoid breaking changes */\n',*message,*mozfullscreenchange,*mozfullscreenerror,*mozpointerlockchange,*mozpointerlockerror,*webglcontextcreationerror,*webglcontextlost,*webglcontextrestored', '[HTMLElement]^[Element]|accessKey,contentEditable,dir,!draggable,!hidden,innerText,lang,*abort,*auxclick,*blur,*cancel,*canplay,*canplaythrough,*change,*click,*close,*contextmenu,*cuechange,*dblclick,*drag,*dragend,*dragenter,*dragleave,*dragover,*dragstart,*drop,*durationchange,*emptied,*ended,*error,*focus,*gotpointercapture,*input,*invalid,*keydown,*keypress,*keyup,*load,*loadeddata,*loadedmetadata,*loadstart,*lostpointercapture,*mousedown,*mouseenter,*mouseleave,*mousemove,*mouseout,*mouseover,*mouseup,*mousewheel,*pause,*play,*playing,*pointercancel,*pointerdown,*pointerenter,*pointerleave,*pointermove,*pointerout,*pointerover,*pointerup,*progress,*ratechange,*reset,*resize,*scroll,*seeked,*seeking,*select,*show,*stalled,*submit,*suspend,*timeupdate,*toggle,*volumechange,*waiting,outerText,!spellcheck,%style,#tabIndex,title,!translate', 'abbr,address,article,aside,b,bdi,bdo,cite,code,dd,dfn,dt,em,figcaption,figure,footer,header,i,kbd,main,mark,nav,noscript,rb,rp,rt,rtc,ruby,s,samp,section,small,strong,sub,sup,u,var,wbr^[HTMLElement]|accessKey,contentEditable,dir,!draggable,!hidden,innerText,lang,*abort,*auxclick,*blur,*cancel,*canplay,*canplaythrough,*change,*click,*close,*contextmenu,*cuechange,*dblclick,*drag,*dragend,*dragenter,*dragleave,*dragover,*dragstart,*drop,*durationchange,*emptied,*ended,*error,*focus,*gotpointercapture,*input,*invalid,*keydown,*keypress,*keyup,*load,*loadeddata,*loadedmetadata,*loadstart,*lostpointercapture,*mousedown,*mouseenter,*mouseleave,*mousemove,*mouseout,*mouseover,*mouseup,*mousewheel,*pause,*play,*playing,*pointercancel,*pointerdown,*pointerenter,*pointerleave,*pointermove,*pointerout,*pointerover,*pointerup,*progress,*ratechange,*reset,*resize,*scroll,*seeked,*seeking,*select,*show,*stalled,*submit,*suspend,*timeupdate,*toggle,*volumechange,*waiting,outerText,!spellcheck,%style,#tabIndex,title,!translate', 'media^[HTMLElement]|!autoplay,!controls,%controlsList,%crossOrigin,#currentTime,!defaultMuted,#defaultPlaybackRate,!disableRemotePlayback,!loop,!muted,*encrypted,*waitingforkey,#playbackRate,preload,src,%srcObject,#volume', ':svg:^[HTMLElement]|*abort,*auxclick,*blur,*cancel,*canplay,*canplaythrough,*change,*click,*close,*contextmenu,*cuechange,*dblclick,*drag,*dragend,*dragenter,*dragleave,*dragover,*dragstart,*drop,*durationchange,*emptied,*ended,*error,*focus,*gotpointercapture,*input,*invalid,*keydown,*keypress,*keyup,*load,*loadeddata,*loadedmetadata,*loadstart,*lostpointercapture,*mousedown,*mouseenter,*mouseleave,*mousemove,*mouseout,*mouseover,*mouseup,*mousewheel,*pause,*play,*playing,*pointercancel,*pointerdown,*pointerenter,*pointerleave,*pointermove,*pointerout,*pointerover,*pointerup,*progress,*ratechange,*reset,*resize,*scroll,*seeked,*seeking,*select,*show,*stalled,*submit,*suspend,*timeupdate,*toggle,*volumechange,*waiting,%style,#tabIndex', ':svg:graphics^:svg:|', ':svg:animation^:svg:|*begin,*end,*repeat', ':svg:geometry^:svg:|', ':svg:componentTransferFunction^:svg:|', ':svg:gradient^:svg:|', ':svg:textContent^:svg:graphics|', ':svg:textPositioning^:svg:textContent|', 'a^[HTMLElement]|charset,coords,download,hash,host,hostname,href,hreflang,name,password,pathname,ping,port,protocol,referrerPolicy,rel,rev,search,shape,target,text,type,username', 'area^[HTMLElement]|alt,coords,download,hash,host,hostname,href,!noHref,password,pathname,ping,port,protocol,referrerPolicy,rel,search,shape,target,username', 'audio^media|', 'br^[HTMLElement]|clear', 'base^[HTMLElement]|href,target', 'body^[HTMLElement]|aLink,background,bgColor,link,*beforeunload,*blur,*error,*focus,*hashchange,*languagechange,*load,*message,*offline,*online,*pagehide,*pageshow,*popstate,*rejectionhandled,*resize,*scroll,*storage,*unhandledrejection,*unload,text,vLink', 'button^[HTMLElement]|!autofocus,!disabled,formAction,formEnctype,formMethod,!formNoValidate,formTarget,name,type,value', 'canvas^[HTMLElement]|#height,#width', 'content^[HTMLElement]|select', 'dl^[HTMLElement]|!compact', 'datalist^[HTMLElement]|', 'details^[HTMLElement]|!open', 'dialog^[HTMLElement]|!open,returnValue', 'dir^[HTMLElement]|!compact', 'div^[HTMLElement]|align', 'embed^[HTMLElement]|align,height,name,src,type,width', 'fieldset^[HTMLElement]|!disabled,name', 'font^[HTMLElement]|color,face,size', 'form^[HTMLElement]|acceptCharset,action,autocomplete,encoding,enctype,method,name,!noValidate,target', 'frame^[HTMLElement]|frameBorder,longDesc,marginHeight,marginWidth,name,!noResize,scrolling,src', 'frameset^[HTMLElement]|cols,*beforeunload,*blur,*error,*focus,*hashchange,*languagechange,*load,*message,*offline,*online,*pagehide,*pageshow,*popstate,*rejectionhandled,*resize,*scroll,*storage,*unhandledrejection,*unload,rows', 'hr^[HTMLElement]|align,color,!noShade,size,width', 'head^[HTMLElement]|', 'h1,h2,h3,h4,h5,h6^[HTMLElement]|align', 'html^[HTMLElement]|version', 'iframe^[HTMLElement]|align,!allowFullscreen,frameBorder,height,longDesc,marginHeight,marginWidth,name,referrerPolicy,%sandbox,scrolling,src,srcdoc,width', 'img^[HTMLElement]|align,alt,border,%crossOrigin,#height,#hspace,!isMap,longDesc,lowsrc,name,referrerPolicy,sizes,src,srcset,useMap,#vspace,#width', 'input^[HTMLElement]|accept,align,alt,autocapitalize,autocomplete,!autofocus,!checked,!defaultChecked,defaultValue,dirName,!disabled,%files,formAction,formEnctype,formMethod,!formNoValidate,formTarget,#height,!incremental,!indeterminate,max,#maxLength,min,#minLength,!multiple,name,pattern,placeholder,!readOnly,!required,selectionDirection,#selectionEnd,#selectionStart,#size,src,step,type,useMap,value,%valueAsDate,#valueAsNumber,#width', 'li^[HTMLElement]|type,#value', 'label^[HTMLElement]|htmlFor', 'legend^[HTMLElement]|align', 'link^[HTMLElement]|as,charset,%crossOrigin,!disabled,href,hreflang,integrity,media,referrerPolicy,rel,%relList,rev,%sizes,target,type', 'map^[HTMLElement]|name', 'marquee^[HTMLElement]|behavior,bgColor,direction,height,#hspace,#loop,#scrollAmount,#scrollDelay,!trueSpeed,#vspace,width', 'menu^[HTMLElement]|!compact', 'meta^[HTMLElement]|content,httpEquiv,name,scheme', 'meter^[HTMLElement]|#high,#low,#max,#min,#optimum,#value', 'ins,del^[HTMLElement]|cite,dateTime', 'ol^[HTMLElement]|!compact,!reversed,#start,type', 'object^[HTMLElement]|align,archive,border,code,codeBase,codeType,data,!declare,height,#hspace,name,standby,type,useMap,#vspace,width', 'optgroup^[HTMLElement]|!disabled,label', 'option^[HTMLElement]|!defaultSelected,!disabled,label,!selected,text,value', 'output^[HTMLElement]|defaultValue,%htmlFor,name,value', 'p^[HTMLElement]|align', 'param^[HTMLElement]|name,type,value,valueType', 'picture^[HTMLElement]|', 'pre^[HTMLElement]|#width', 'progress^[HTMLElement]|#max,#value', 'q,blockquote,cite^[HTMLElement]|', 'script^[HTMLElement]|!async,charset,%crossOrigin,!defer,event,htmlFor,integrity,src,text,type', 'select^[HTMLElement]|!autofocus,!disabled,#length,!multiple,name,!required,#selectedIndex,#size,value', 'shadow^[HTMLElement]|', 'slot^[HTMLElement]|name', 'source^[HTMLElement]|media,sizes,src,srcset,type', 'span^[HTMLElement]|', 'style^[HTMLElement]|!disabled,media,type', 'caption^[HTMLElement]|align', 'th,td^[HTMLElement]|abbr,align,axis,bgColor,ch,chOff,#colSpan,headers,height,!noWrap,#rowSpan,scope,vAlign,width', 'col,colgroup^[HTMLElement]|align,ch,chOff,#span,vAlign,width', 'table^[HTMLElement]|align,bgColor,border,%caption,cellPadding,cellSpacing,frame,rules,summary,%tFoot,%tHead,width', 'tr^[HTMLElement]|align,bgColor,ch,chOff,vAlign', 'tfoot,thead,tbody^[HTMLElement]|align,ch,chOff,vAlign', 'template^[HTMLElement]|', 'textarea^[HTMLElement]|autocapitalize,!autofocus,#cols,defaultValue,dirName,!disabled,#maxLength,#minLength,name,placeholder,!readOnly,!required,#rows,selectionDirection,#selectionEnd,#selectionStart,value,wrap', 'title^[HTMLElement]|text', 'track^[HTMLElement]|!default,kind,label,src,srclang', 'ul^[HTMLElement]|!compact,type', 'unknown^[HTMLElement]|', 'video^media|#height,poster,#width', ':svg:a^:svg:graphics|', ':svg:animate^:svg:animation|', ':svg:animateMotion^:svg:animation|', ':svg:animateTransform^:svg:animation|', ':svg:circle^:svg:geometry|', ':svg:clipPath^:svg:graphics|', ':svg:defs^:svg:graphics|', ':svg:desc^:svg:|', ':svg:discard^:svg:|', ':svg:ellipse^:svg:geometry|', ':svg:feBlend^:svg:|', ':svg:feColorMatrix^:svg:|', ':svg:feComponentTransfer^:svg:|', ':svg:feComposite^:svg:|', ':svg:feConvolveMatrix^:svg:|', ':svg:feDiffuseLighting^:svg:|', ':svg:feDisplacementMap^:svg:|', ':svg:feDistantLight^:svg:|', ':svg:feDropShadow^:svg:|', ':svg:feFlood^:svg:|', ':svg:feFuncA^:svg:componentTransferFunction|', ':svg:feFuncB^:svg:componentTransferFunction|', ':svg:feFuncG^:svg:componentTransferFunction|', ':svg:feFuncR^:svg:componentTransferFunction|', ':svg:feGaussianBlur^:svg:|', ':svg:feImage^:svg:|', ':svg:feMerge^:svg:|', ':svg:feMergeNode^:svg:|', ':svg:feMorphology^:svg:|', ':svg:feOffset^:svg:|', ':svg:fePointLight^:svg:|', ':svg:feSpecularLighting^:svg:|', ':svg:feSpotLight^:svg:|', ':svg:feTile^:svg:|', ':svg:feTurbulence^:svg:|', ':svg:filter^:svg:|', ':svg:foreignObject^:svg:graphics|', ':svg:g^:svg:graphics|', ':svg:image^:svg:graphics|', ':svg:line^:svg:geometry|', ':svg:linearGradient^:svg:gradient|', ':svg:mpath^:svg:|', ':svg:marker^:svg:|', ':svg:mask^:svg:|', ':svg:metadata^:svg:|', ':svg:path^:svg:geometry|', ':svg:pattern^:svg:|', ':svg:polygon^:svg:geometry|', ':svg:polyline^:svg:geometry|', ':svg:radialGradient^:svg:gradient|', ':svg:rect^:svg:geometry|', ':svg:svg^:svg:graphics|#currentScale,#zoomAndPan', ':svg:script^:svg:|type', ':svg:set^:svg:animation|', ':svg:stop^:svg:|', ':svg:style^:svg:|!disabled,media,title,type', ':svg:switch^:svg:graphics|', ':svg:symbol^:svg:|', ':svg:tspan^:svg:textPositioning|', ':svg:text^:svg:textPositioning|', ':svg:textPath^:svg:textContent|', ':svg:title^:svg:|', ':svg:use^:svg:graphics|', ':svg:view^:svg:|#zoomAndPan', 'data^[HTMLElement]|value', 'keygen^[HTMLElement]|!autofocus,challenge,!disabled,form,keytype,name', 'menuitem^[HTMLElement]|type,label,icon,!disabled,!checked,radiogroup,!default', 'summary^[HTMLElement]|', 'time^[HTMLElement]|dateTime', ':svg:cursor^:svg:|'];\nvar _ATTR_TO_PROP = {\n  'class': 'className',\n  'for': 'htmlFor',\n  'formaction': 'formAction',\n  'innerHtml': 'innerHTML',\n  'readonly': 'readOnly',\n  'tabindex': 'tabIndex'\n};\n\nvar DomElementSchemaRegistry = /*#__PURE__*/function (_ElementSchemaRegistr) {\n  _inherits(DomElementSchemaRegistry, _ElementSchemaRegistr);\n\n  var _super96 = _createSuper(DomElementSchemaRegistry);\n\n  function DomElementSchemaRegistry() {\n    var _this158;\n\n    _classCallCheck(this, DomElementSchemaRegistry);\n\n    _this158 = _super96.call(this);\n    _this158._schema = {};\n    SCHEMA.forEach(function (encodedType) {\n      var type = {};\n\n      var _encodedType$split = encodedType.split('|'),\n          _encodedType$split2 = _slicedToArray(_encodedType$split, 2),\n          strType = _encodedType$split2[0],\n          strProperties = _encodedType$split2[1];\n\n      var properties = strProperties.split(',');\n\n      var _strType$split = strType.split('^'),\n          _strType$split2 = _slicedToArray(_strType$split, 2),\n          typeNames = _strType$split2[0],\n          superName = _strType$split2[1];\n\n      typeNames.split(',').forEach(function (tag) {\n        return _this158._schema[tag.toLowerCase()] = type;\n      });\n\n      var superType = superName && _this158._schema[superName.toLowerCase()];\n\n      if (superType) {\n        Object.keys(superType).forEach(function (prop) {\n          type[prop] = superType[prop];\n        });\n      }\n\n      properties.forEach(function (property) {\n        if (property.length > 0) {\n          switch (property[0]) {\n            case '*':\n              // We don't yet support events.\n              // If ever allowing to bind to events, GO THROUGH A SECURITY REVIEW, allowing events\n              // will\n              // almost certainly introduce bad XSS vulnerabilities.\n              // type[property.substring(1)] = EVENT;\n              break;\n\n            case '!':\n              type[property.substring(1)] = BOOLEAN;\n              break;\n\n            case '#':\n              type[property.substring(1)] = NUMBER;\n              break;\n\n            case '%':\n              type[property.substring(1)] = OBJECT;\n              break;\n\n            default:\n              type[property] = STRING;\n          }\n        }\n      });\n    });\n    return _this158;\n  }\n\n  _createClass(DomElementSchemaRegistry, [{\n    key: \"hasProperty\",\n    value: function hasProperty(tagName, propName, schemaMetas) {\n      if (schemaMetas.some(function (schema) {\n        return schema.name === NO_ERRORS_SCHEMA.name;\n      })) {\n        return true;\n      }\n\n      if (tagName.indexOf('-') > -1) {\n        if (isNgContainer(tagName) || isNgContent(tagName)) {\n          return false;\n        }\n\n        if (schemaMetas.some(function (schema) {\n          return schema.name === CUSTOM_ELEMENTS_SCHEMA.name;\n        })) {\n          // Can't tell now as we don't know which properties a custom element will get\n          // once it is instantiated\n          return true;\n        }\n      }\n\n      var elementProperties = this._schema[tagName.toLowerCase()] || this._schema['unknown'];\n\n      return !!elementProperties[propName];\n    }\n  }, {\n    key: \"hasElement\",\n    value: function hasElement(tagName, schemaMetas) {\n      if (schemaMetas.some(function (schema) {\n        return schema.name === NO_ERRORS_SCHEMA.name;\n      })) {\n        return true;\n      }\n\n      if (tagName.indexOf('-') > -1) {\n        if (isNgContainer(tagName) || isNgContent(tagName)) {\n          return true;\n        }\n\n        if (schemaMetas.some(function (schema) {\n          return schema.name === CUSTOM_ELEMENTS_SCHEMA.name;\n        })) {\n          // Allow any custom elements\n          return true;\n        }\n      }\n\n      return !!this._schema[tagName.toLowerCase()];\n    }\n    /**\n     * securityContext returns the security context for the given property on the given DOM tag.\n     *\n     * Tag and property name are statically known and cannot change at runtime, i.e. it is not\n     * possible to bind a value into a changing attribute or tag name.\n     *\n     * The filtering is based on a list of allowed tags|attributes. All attributes in the schema\n     * above are assumed to have the 'NONE' security context, i.e. that they are safe inert\n     * string values. Only specific well known attack vectors are assigned their appropriate context.\n     */\n\n  }, {\n    key: \"securityContext\",\n    value: function securityContext(tagName, propName, isAttribute) {\n      if (isAttribute) {\n        // NB: For security purposes, use the mapped property name, not the attribute name.\n        propName = this.getMappedPropName(propName);\n      } // Make sure comparisons are case insensitive, so that case differences between attribute and\n      // property names do not have a security impact.\n\n\n      tagName = tagName.toLowerCase();\n      propName = propName.toLowerCase();\n      var ctx = SECURITY_SCHEMA()[tagName + '|' + propName];\n\n      if (ctx) {\n        return ctx;\n      }\n\n      ctx = SECURITY_SCHEMA()['*|' + propName];\n      return ctx ? ctx : SecurityContext.NONE;\n    }\n  }, {\n    key: \"getMappedPropName\",\n    value: function getMappedPropName(propName) {\n      return _ATTR_TO_PROP[propName] || propName;\n    }\n  }, {\n    key: \"getDefaultComponentElementName\",\n    value: function getDefaultComponentElementName() {\n      return 'ng-component';\n    }\n  }, {\n    key: \"validateProperty\",\n    value: function validateProperty(name) {\n      if (name.toLowerCase().startsWith('on')) {\n        var msg = \"Binding to event property '\".concat(name, \"' is disallowed for security reasons, \") + \"please use (\".concat(name.slice(2), \")=...\") + \"\\nIf '\".concat(name, \"' is a directive input, make sure the directive is imported by the\") + \" current module.\";\n        return {\n          error: true,\n          msg: msg\n        };\n      } else {\n        return {\n          error: false\n        };\n      }\n    }\n  }, {\n    key: \"validateAttribute\",\n    value: function validateAttribute(name) {\n      if (name.toLowerCase().startsWith('on')) {\n        var msg = \"Binding to event attribute '\".concat(name, \"' is disallowed for security reasons, \") + \"please use (\".concat(name.slice(2), \")=...\");\n        return {\n          error: true,\n          msg: msg\n        };\n      } else {\n        return {\n          error: false\n        };\n      }\n    }\n  }, {\n    key: \"allKnownElementNames\",\n    value: function allKnownElementNames() {\n      return Object.keys(this._schema);\n    }\n  }, {\n    key: \"normalizeAnimationStyleProperty\",\n    value: function normalizeAnimationStyleProperty(propName) {\n      return dashCaseToCamelCase(propName);\n    }\n  }, {\n    key: \"normalizeAnimationStyleValue\",\n    value: function normalizeAnimationStyleValue(camelCaseProp, userProvidedProp, val) {\n      var unit = '';\n      var strVal = val.toString().trim();\n      var errorMsg = null;\n\n      if (_isPixelDimensionStyle(camelCaseProp) && val !== 0 && val !== '0') {\n        if (typeof val === 'number') {\n          unit = 'px';\n        } else {\n          var valAndSuffixMatch = val.match(/^[+-]?[\\d\\.]+([a-z]*)$/);\n\n          if (valAndSuffixMatch && valAndSuffixMatch[1].length == 0) {\n            errorMsg = \"Please provide a CSS unit value for \".concat(userProvidedProp, \":\").concat(val);\n          }\n        }\n      }\n\n      return {\n        error: errorMsg,\n        value: strVal + unit\n      };\n    }\n  }]);\n\n  return DomElementSchemaRegistry;\n}(ElementSchemaRegistry);\n\nfunction _isPixelDimensionStyle(prop) {\n  switch (prop) {\n    case 'width':\n    case 'height':\n    case 'minWidth':\n    case 'minHeight':\n    case 'maxWidth':\n    case 'maxHeight':\n    case 'left':\n    case 'top':\n    case 'bottom':\n    case 'right':\n    case 'fontSize':\n    case 'outlineWidth':\n    case 'outlineOffset':\n    case 'paddingTop':\n    case 'paddingLeft':\n    case 'paddingBottom':\n    case 'paddingRight':\n    case 'marginTop':\n    case 'marginLeft':\n    case 'marginBottom':\n    case 'marginRight':\n    case 'borderRadius':\n    case 'borderWidth':\n    case 'borderTopWidth':\n    case 'borderLeftWidth':\n    case 'borderRightWidth':\n    case 'borderBottomWidth':\n    case 'textIndent':\n      return true;\n\n    default:\n      return false;\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar BIND_NAME_REGEXP$1 = /^(?:(?:(?:(bind-)|(let-)|(ref-|#)|(on-)|(bindon-)|(@))(.*))|\\[\\(([^\\)]+)\\)\\]|\\[([^\\]]+)\\]|\\(([^\\)]+)\\))$/; // Group 1 = \"bind-\"\n\nvar KW_BIND_IDX$1 = 1; // Group 2 = \"let-\"\n\nvar KW_LET_IDX$1 = 2; // Group 3 = \"ref-/#\"\n\nvar KW_REF_IDX$1 = 3; // Group 4 = \"on-\"\n\nvar KW_ON_IDX$1 = 4; // Group 5 = \"bindon-\"\n\nvar KW_BINDON_IDX$1 = 5; // Group 6 = \"@\"\n\nvar KW_AT_IDX$1 = 6; // Group 7 = the identifier after \"bind-\", \"let-\", \"ref-/#\", \"on-\", \"bindon-\" or \"@\"\n\nvar IDENT_KW_IDX$1 = 7; // Group 8 = identifier inside [()]\n\nvar IDENT_BANANA_BOX_IDX$1 = 8; // Group 9 = identifier inside []\n\nvar IDENT_PROPERTY_IDX$1 = 9; // Group 10 = identifier inside ()\n\nvar IDENT_EVENT_IDX$1 = 10;\nvar TEMPLATE_ATTR_PREFIX$2 = '*';\n\nfunction htmlAstToRender3Ast(htmlNodes, bindingParser) {\n  var transformer = new HtmlAstToIvyAst(bindingParser);\n  var ivyNodes = visitAll$1(transformer, htmlNodes); // Errors might originate in either the binding parser or the html to ivy transformer\n\n  var allErrors = bindingParser.errors.concat(transformer.errors);\n  return {\n    nodes: ivyNodes,\n    errors: allErrors,\n    styleUrls: transformer.styleUrls,\n    styles: transformer.styles,\n    ngContentSelectors: transformer.ngContentSelectors\n  };\n}\n\nvar HtmlAstToIvyAst = /*#__PURE__*/function () {\n  function HtmlAstToIvyAst(bindingParser) {\n    _classCallCheck(this, HtmlAstToIvyAst);\n\n    this.bindingParser = bindingParser;\n    this.errors = [];\n    this.styles = [];\n    this.styleUrls = [];\n    this.ngContentSelectors = [];\n    this.inI18nBlock = false;\n  } // HTML visitor\n\n\n  _createClass(HtmlAstToIvyAst, [{\n    key: \"visitElement\",\n    value: function visitElement(element) {\n      var _this159 = this;\n\n      var isI18nRootElement = isI18nRootNode(element.i18n);\n\n      if (isI18nRootElement) {\n        if (this.inI18nBlock) {\n          this.reportError('Cannot mark an element as translatable inside of a translatable section. Please remove the nested i18n marker.', element.sourceSpan);\n        }\n\n        this.inI18nBlock = true;\n      }\n\n      var preparsedElement = preparseElement(element);\n\n      if (preparsedElement.type === PreparsedElementType.SCRIPT) {\n        return null;\n      } else if (preparsedElement.type === PreparsedElementType.STYLE) {\n        var contents = textContents(element);\n\n        if (contents !== null) {\n          this.styles.push(contents);\n        }\n\n        return null;\n      } else if (preparsedElement.type === PreparsedElementType.STYLESHEET && isStyleUrlResolvable(preparsedElement.hrefAttr)) {\n        this.styleUrls.push(preparsedElement.hrefAttr);\n        return null;\n      } // Whether the element is a `<ng-template>`\n\n\n      var isTemplateElement = isNgTemplate(element.name);\n      var parsedProperties = [];\n      var boundEvents = [];\n      var variables = [];\n      var references = [];\n      var attributes = [];\n      var i18nAttrsMeta = {};\n      var templateParsedProperties = [];\n      var templateVariables = []; // Whether the element has any *-attribute\n\n      var elementHasInlineTemplate = false;\n\n      var _iterator12 = _createForOfIteratorHelper(element.attrs),\n          _step12;\n\n      try {\n        for (_iterator12.s(); !(_step12 = _iterator12.n()).done;) {\n          var attribute = _step12.value;\n          var hasBinding = false;\n          var normalizedName = normalizeAttributeName(attribute.name); // `*attr` defines template bindings\n\n          var isTemplateBinding = false;\n\n          if (attribute.i18n) {\n            i18nAttrsMeta[attribute.name] = attribute.i18n;\n          }\n\n          if (normalizedName.startsWith(TEMPLATE_ATTR_PREFIX$2)) {\n            // *-attributes\n            if (elementHasInlineTemplate) {\n              this.reportError(\"Can't have multiple template bindings on one element. Use only one attribute prefixed with *\", attribute.sourceSpan);\n            }\n\n            isTemplateBinding = true;\n            elementHasInlineTemplate = true;\n            var templateValue = attribute.value;\n            var templateKey = normalizedName.substring(TEMPLATE_ATTR_PREFIX$2.length);\n            var parsedVariables = [];\n            var absoluteValueOffset = attribute.valueSpan ? attribute.valueSpan.start.offset : // If there is no value span the attribute does not have a value, like `attr` in\n            //`<div attr></div>`. In this case, point to one character beyond the last character of\n            // the attribute name.\n            attribute.sourceSpan.start.offset + attribute.name.length;\n            this.bindingParser.parseInlineTemplateBinding(templateKey, templateValue, attribute.sourceSpan, absoluteValueOffset, [], templateParsedProperties, parsedVariables, true\n            /* isIvyAst */\n            );\n            templateVariables.push.apply(templateVariables, _toConsumableArray(parsedVariables.map(function (v) {\n              return new Variable(v.name, v.value, v.sourceSpan, v.keySpan, v.valueSpan);\n            })));\n          } else {\n            // Check for variables, events, property bindings, interpolation\n            hasBinding = this.parseAttribute(isTemplateElement, attribute, [], parsedProperties, boundEvents, variables, references);\n          }\n\n          if (!hasBinding && !isTemplateBinding) {\n            // don't include the bindings as attributes as well in the AST\n            attributes.push(this.visitAttribute(attribute));\n          }\n        }\n      } catch (err) {\n        _iterator12.e(err);\n      } finally {\n        _iterator12.f();\n      }\n\n      var children = visitAll$1(preparsedElement.nonBindable ? NON_BINDABLE_VISITOR$1 : this, element.children);\n      var parsedElement;\n\n      if (preparsedElement.type === PreparsedElementType.NG_CONTENT) {\n        // `<ng-content>`\n        if (element.children && !element.children.every(function (node) {\n          return isEmptyTextNode(node) || isCommentNode(node);\n        })) {\n          this.reportError(\"<ng-content> element cannot have content.\", element.sourceSpan);\n        }\n\n        var selector = preparsedElement.selectAttr;\n        var attrs = element.attrs.map(function (attr) {\n          return _this159.visitAttribute(attr);\n        });\n        parsedElement = new Content(selector, attrs, element.sourceSpan, element.i18n);\n        this.ngContentSelectors.push(selector);\n      } else if (isTemplateElement) {\n        // `<ng-template>`\n        var _attrs = this.extractAttributes(element.name, parsedProperties, i18nAttrsMeta);\n\n        parsedElement = new Template(element.name, attributes, _attrs.bound, boundEvents, [\n          /* no template attributes */\n        ], children, references, variables, element.sourceSpan, element.startSourceSpan, element.endSourceSpan, element.i18n);\n      } else {\n        var _attrs2 = this.extractAttributes(element.name, parsedProperties, i18nAttrsMeta);\n\n        parsedElement = new Element(element.name, attributes, _attrs2.bound, boundEvents, children, references, element.sourceSpan, element.startSourceSpan, element.endSourceSpan, element.i18n);\n      }\n\n      if (elementHasInlineTemplate) {\n        // If this node is an inline-template (e.g. has *ngFor) then we need to create a template\n        // node that contains this node.\n        // Moreover, if the node is an element, then we need to hoist its attributes to the template\n        // node for matching against content projection selectors.\n        var _attrs3 = this.extractAttributes('ng-template', templateParsedProperties, i18nAttrsMeta);\n\n        var templateAttrs = [];\n\n        _attrs3.literal.forEach(function (attr) {\n          return templateAttrs.push(attr);\n        });\n\n        _attrs3.bound.forEach(function (attr) {\n          return templateAttrs.push(attr);\n        });\n\n        var hoistedAttrs = parsedElement instanceof Element ? {\n          attributes: parsedElement.attributes,\n          inputs: parsedElement.inputs,\n          outputs: parsedElement.outputs\n        } : {\n          attributes: [],\n          inputs: [],\n          outputs: []\n        }; // For <ng-template>s with structural directives on them, avoid passing i18n information to\n        // the wrapping template to prevent unnecessary i18n instructions from being generated. The\n        // necessary i18n meta information will be extracted from child elements.\n\n        var i18n = isTemplateElement && isI18nRootElement ? undefined : element.i18n; // TODO(pk): test for this case\n\n        parsedElement = new Template(parsedElement.name, hoistedAttrs.attributes, hoistedAttrs.inputs, hoistedAttrs.outputs, templateAttrs, [parsedElement], [\n          /* no references */\n        ], templateVariables, element.sourceSpan, element.startSourceSpan, element.endSourceSpan, i18n);\n      }\n\n      if (isI18nRootElement) {\n        this.inI18nBlock = false;\n      }\n\n      return parsedElement;\n    }\n  }, {\n    key: \"visitAttribute\",\n    value: function visitAttribute(attribute) {\n      return new TextAttribute(attribute.name, attribute.value, attribute.sourceSpan, attribute.valueSpan, attribute.i18n);\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text) {\n      return this._visitTextWithInterpolation(text.value, text.sourceSpan, text.i18n);\n    }\n  }, {\n    key: \"visitExpansion\",\n    value: function visitExpansion(expansion) {\n      var _this160 = this;\n\n      if (!expansion.i18n) {\n        // do not generate Icu in case it was created\n        // outside of i18n block in a template\n        return null;\n      }\n\n      if (!isI18nRootNode(expansion.i18n)) {\n        throw new Error(\"Invalid type \\\"\".concat(expansion.i18n.constructor, \"\\\" for \\\"i18n\\\" property of \").concat(expansion.sourceSpan.toString(), \". Expected a \\\"Message\\\"\"));\n      }\n\n      var message = expansion.i18n;\n      var vars = {};\n      var placeholders = {}; // extract VARs from ICUs - we process them separately while\n      // assembling resulting message via goog.getMsg function, since\n      // we need to pass them to top-level goog.getMsg call\n\n      Object.keys(message.placeholders).forEach(function (key) {\n        var value = message.placeholders[key];\n\n        if (key.startsWith(I18N_ICU_VAR_PREFIX)) {\n          // Currently when the `plural` or `select` keywords in an ICU contain trailing spaces (e.g.\n          // `{count, select , ...}`), these spaces are also included into the key names in ICU vars\n          // (e.g. \"VAR_SELECT \"). These trailing spaces are not desirable, since they will later be\n          // converted into `_` symbols while normalizing placeholder names, which might lead to\n          // mismatches at runtime (i.e. placeholder will not be replaced with the correct value).\n          var formattedKey = key.trim();\n\n          var ast = _this160.bindingParser.parseInterpolationExpression(value.text, value.sourceSpan);\n\n          vars[formattedKey] = new BoundText(ast, value.sourceSpan);\n        } else {\n          placeholders[key] = _this160._visitTextWithInterpolation(value.text, value.sourceSpan);\n        }\n      });\n      return new Icu(vars, placeholders, expansion.sourceSpan, message);\n    }\n  }, {\n    key: \"visitExpansionCase\",\n    value: function visitExpansionCase(expansionCase) {\n      return null;\n    }\n  }, {\n    key: \"visitComment\",\n    value: function visitComment(comment) {\n      return null;\n    } // convert view engine `ParsedProperty` to a format suitable for IVY\n\n  }, {\n    key: \"extractAttributes\",\n    value: function extractAttributes(elementName, properties, i18nPropsMeta) {\n      var _this161 = this;\n\n      var bound = [];\n      var literal = [];\n      properties.forEach(function (prop) {\n        var i18n = i18nPropsMeta[prop.name];\n\n        if (prop.isLiteral) {\n          literal.push(new TextAttribute(prop.name, prop.expression.source || '', prop.sourceSpan, undefined, i18n));\n        } else {\n          // Note that validation is skipped and property mapping is disabled\n          // due to the fact that we need to make sure a given prop is not an\n          // input of a directive and directive matching happens at runtime.\n          var bep = _this161.bindingParser.createBoundElementProperty(elementName, prop,\n          /* skipValidation */\n          true,\n          /* mapPropertyName */\n          false);\n\n          bound.push(BoundAttribute.fromBoundElementProperty(bep, i18n));\n        }\n      });\n      return {\n        bound: bound,\n        literal: literal\n      };\n    }\n  }, {\n    key: \"parseAttribute\",\n    value: function parseAttribute(isTemplateElement, attribute, matchableAttributes, parsedProperties, boundEvents, variables, references) {\n      var name = normalizeAttributeName(attribute.name);\n      var value = attribute.value;\n      var srcSpan = attribute.sourceSpan;\n      var absoluteOffset = attribute.valueSpan ? attribute.valueSpan.start.offset : srcSpan.start.offset;\n\n      function createKeySpan(srcSpan, prefix, identifier) {\n        // We need to adjust the start location for the keySpan to account for the removed 'data-'\n        // prefix from `normalizeAttributeName`.\n        var normalizationAdjustment = attribute.name.length - name.length;\n        var keySpanStart = srcSpan.start.moveBy(prefix.length + normalizationAdjustment);\n        var keySpanEnd = keySpanStart.moveBy(identifier.length);\n        return new ParseSourceSpan(keySpanStart, keySpanEnd, keySpanStart, identifier);\n      }\n\n      var bindParts = name.match(BIND_NAME_REGEXP$1);\n      var hasBinding = false;\n\n      if (bindParts) {\n        hasBinding = true;\n\n        if (bindParts[KW_BIND_IDX$1] != null) {\n          var identifier = bindParts[IDENT_KW_IDX$1];\n          var keySpan = createKeySpan(srcSpan, bindParts[KW_BIND_IDX$1], identifier);\n          this.bindingParser.parsePropertyBinding(identifier, value, false, srcSpan, absoluteOffset, attribute.valueSpan, matchableAttributes, parsedProperties, keySpan);\n        } else if (bindParts[KW_LET_IDX$1]) {\n          if (isTemplateElement) {\n            var _identifier2 = bindParts[IDENT_KW_IDX$1];\n\n            var _keySpan = createKeySpan(srcSpan, bindParts[KW_LET_IDX$1], _identifier2);\n\n            this.parseVariable(_identifier2, value, srcSpan, _keySpan, attribute.valueSpan, variables);\n          } else {\n            this.reportError(\"\\\"let-\\\" is only supported on ng-template elements.\", srcSpan);\n          }\n        } else if (bindParts[KW_REF_IDX$1]) {\n          var _identifier3 = bindParts[IDENT_KW_IDX$1];\n          this.parseReference(_identifier3, value, srcSpan, attribute.valueSpan, references);\n        } else if (bindParts[KW_ON_IDX$1]) {\n          var events = [];\n          var _identifier4 = bindParts[IDENT_KW_IDX$1];\n          this.bindingParser.parseEvent(_identifier4, value, srcSpan, attribute.valueSpan || srcSpan, matchableAttributes, events);\n          addEvents(events, boundEvents);\n        } else if (bindParts[KW_BINDON_IDX$1]) {\n          var _identifier5 = bindParts[IDENT_KW_IDX$1];\n\n          var _keySpan2 = createKeySpan(srcSpan, bindParts[KW_BINDON_IDX$1], _identifier5);\n\n          this.bindingParser.parsePropertyBinding(_identifier5, value, false, srcSpan, absoluteOffset, attribute.valueSpan, matchableAttributes, parsedProperties, _keySpan2);\n          this.parseAssignmentEvent(_identifier5, value, srcSpan, attribute.valueSpan, matchableAttributes, boundEvents);\n        } else if (bindParts[KW_AT_IDX$1]) {\n          var _keySpan3 = createKeySpan(srcSpan, '', name);\n\n          this.bindingParser.parseLiteralAttr(name, value, srcSpan, absoluteOffset, attribute.valueSpan, matchableAttributes, parsedProperties, _keySpan3);\n        } else if (bindParts[IDENT_BANANA_BOX_IDX$1]) {\n          var _keySpan4 = createKeySpan(srcSpan, '[(', bindParts[IDENT_BANANA_BOX_IDX$1]);\n\n          this.bindingParser.parsePropertyBinding(bindParts[IDENT_BANANA_BOX_IDX$1], value, false, srcSpan, absoluteOffset, attribute.valueSpan, matchableAttributes, parsedProperties, _keySpan4);\n          this.parseAssignmentEvent(bindParts[IDENT_BANANA_BOX_IDX$1], value, srcSpan, attribute.valueSpan, matchableAttributes, boundEvents);\n        } else if (bindParts[IDENT_PROPERTY_IDX$1]) {\n          var _keySpan5 = createKeySpan(srcSpan, '[', bindParts[IDENT_PROPERTY_IDX$1]);\n\n          this.bindingParser.parsePropertyBinding(bindParts[IDENT_PROPERTY_IDX$1], value, false, srcSpan, absoluteOffset, attribute.valueSpan, matchableAttributes, parsedProperties, _keySpan5);\n        } else if (bindParts[IDENT_EVENT_IDX$1]) {\n          var _events = [];\n          this.bindingParser.parseEvent(bindParts[IDENT_EVENT_IDX$1], value, srcSpan, attribute.valueSpan || srcSpan, matchableAttributes, _events);\n          addEvents(_events, boundEvents);\n        }\n      } else {\n        var _keySpan6 = createKeySpan(srcSpan, ''\n        /* prefix */\n        , name);\n\n        hasBinding = this.bindingParser.parsePropertyInterpolation(name, value, srcSpan, attribute.valueSpan, matchableAttributes, parsedProperties, _keySpan6);\n      }\n\n      return hasBinding;\n    }\n  }, {\n    key: \"_visitTextWithInterpolation\",\n    value: function _visitTextWithInterpolation(value, sourceSpan, i18n) {\n      var valueNoNgsp = replaceNgsp(value);\n      var expr = this.bindingParser.parseInterpolation(valueNoNgsp, sourceSpan);\n      return expr ? new BoundText(expr, sourceSpan, i18n) : new Text(valueNoNgsp, sourceSpan);\n    }\n  }, {\n    key: \"parseVariable\",\n    value: function parseVariable(identifier, value, sourceSpan, keySpan, valueSpan, variables) {\n      if (identifier.indexOf('-') > -1) {\n        this.reportError(\"\\\"-\\\" is not allowed in variable names\", sourceSpan);\n      } else if (identifier.length === 0) {\n        this.reportError(\"Variable does not have a name\", sourceSpan);\n      }\n\n      variables.push(new Variable(identifier, value, sourceSpan, keySpan, valueSpan));\n    }\n  }, {\n    key: \"parseReference\",\n    value: function parseReference(identifier, value, sourceSpan, valueSpan, references) {\n      if (identifier.indexOf('-') > -1) {\n        this.reportError(\"\\\"-\\\" is not allowed in reference names\", sourceSpan);\n      } else if (identifier.length === 0) {\n        this.reportError(\"Reference does not have a name\", sourceSpan);\n      }\n\n      references.push(new Reference(identifier, value, sourceSpan, valueSpan));\n    }\n  }, {\n    key: \"parseAssignmentEvent\",\n    value: function parseAssignmentEvent(name, expression, sourceSpan, valueSpan, targetMatchableAttrs, boundEvents) {\n      var events = [];\n      this.bindingParser.parseEvent(\"\".concat(name, \"Change\"), \"\".concat(expression, \"=$event\"), sourceSpan, valueSpan || sourceSpan, targetMatchableAttrs, events);\n      addEvents(events, boundEvents);\n    }\n  }, {\n    key: \"reportError\",\n    value: function reportError(message, sourceSpan) {\n      var level = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : ParseErrorLevel.ERROR;\n      this.errors.push(new ParseError(sourceSpan, message, level));\n    }\n  }]);\n\n  return HtmlAstToIvyAst;\n}();\n\nvar NonBindableVisitor$1 = /*#__PURE__*/function () {\n  function NonBindableVisitor$1() {\n    _classCallCheck(this, NonBindableVisitor$1);\n  }\n\n  _createClass(NonBindableVisitor$1, [{\n    key: \"visitElement\",\n    value: function visitElement(ast) {\n      var preparsedElement = preparseElement(ast);\n\n      if (preparsedElement.type === PreparsedElementType.SCRIPT || preparsedElement.type === PreparsedElementType.STYLE || preparsedElement.type === PreparsedElementType.STYLESHEET) {\n        // Skipping <script> for security reasons\n        // Skipping <style> and stylesheets as we already processed them\n        // in the StyleCompiler\n        return null;\n      }\n\n      var children = visitAll$1(this, ast.children, null);\n      return new Element(ast.name, visitAll$1(this, ast.attrs),\n      /* inputs */\n      [],\n      /* outputs */\n      [], children,\n      /* references */\n      [], ast.sourceSpan, ast.startSourceSpan, ast.endSourceSpan);\n    }\n  }, {\n    key: \"visitComment\",\n    value: function visitComment(comment) {\n      return null;\n    }\n  }, {\n    key: \"visitAttribute\",\n    value: function visitAttribute(attribute) {\n      return new TextAttribute(attribute.name, attribute.value, attribute.sourceSpan, undefined, attribute.i18n);\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text) {\n      return new Text(text.value, text.sourceSpan);\n    }\n  }, {\n    key: \"visitExpansion\",\n    value: function visitExpansion(expansion) {\n      return null;\n    }\n  }, {\n    key: \"visitExpansionCase\",\n    value: function visitExpansionCase(expansionCase) {\n      return null;\n    }\n  }]);\n\n  return NonBindableVisitor$1;\n}();\n\nvar NON_BINDABLE_VISITOR$1 = new NonBindableVisitor$1();\n\nfunction normalizeAttributeName(attrName) {\n  return /^data-/i.test(attrName) ? attrName.substring(5) : attrName;\n}\n\nfunction addEvents(events, boundEvents) {\n  boundEvents.push.apply(boundEvents, _toConsumableArray(events.map(function (e) {\n    return BoundEvent.fromParsedEvent(e);\n  })));\n}\n\nfunction isEmptyTextNode(node) {\n  return node instanceof Text$3 && node.value.trim().length == 0;\n}\n\nfunction isCommentNode(node) {\n  return node instanceof Comment;\n}\n\nfunction textContents(node) {\n  if (node.children.length !== 1 || !(node.children[0] instanceof Text$3)) {\n    return null;\n  } else {\n    return node.children[0].value;\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar TagType;\n\n(function (TagType) {\n  TagType[TagType[\"ELEMENT\"] = 0] = \"ELEMENT\";\n  TagType[TagType[\"TEMPLATE\"] = 1] = \"TEMPLATE\";\n})(TagType || (TagType = {}));\n/**\n * Generates an object that is used as a shared state between parent and all child contexts.\n */\n\n\nfunction setupRegistry() {\n  return {\n    getUniqueId: getSeqNumberGenerator(),\n    icus: new Map()\n  };\n}\n/**\n * I18nContext is a helper class which keeps track of all i18n-related aspects\n * (accumulates placeholders, bindings, etc) between i18nStart and i18nEnd instructions.\n *\n * When we enter a nested template, the top-level context is being passed down\n * to the nested component, which uses this context to generate a child instance\n * of I18nContext class (to handle nested template) and at the end, reconciles it back\n * with the parent context.\n *\n * @param index Instruction index of i18nStart, which initiates this context\n * @param ref Reference to a translation const that represents the content if thus context\n * @param level Nestng level defined for child contexts\n * @param templateIndex Instruction index of a template which this context belongs to\n * @param meta Meta information (id, meaning, description, etc) associated with this context\n */\n\n\nvar I18nContext = /*#__PURE__*/function () {\n  function I18nContext(index, ref) {\n    var level = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;\n    var templateIndex = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;\n    var meta = arguments.length > 4 ? arguments[4] : undefined;\n    var registry = arguments.length > 5 ? arguments[5] : undefined;\n\n    _classCallCheck(this, I18nContext);\n\n    this.index = index;\n    this.ref = ref;\n    this.level = level;\n    this.templateIndex = templateIndex;\n    this.meta = meta;\n    this.registry = registry;\n    this.bindings = new Set();\n    this.placeholders = new Map();\n    this.isEmitted = false;\n    this._unresolvedCtxCount = 0;\n    this._registry = registry || setupRegistry();\n    this.id = this._registry.getUniqueId();\n  }\n\n  _createClass(I18nContext, [{\n    key: \"appendTag\",\n    value: function appendTag(type, node, index, closed) {\n      if (node.isVoid && closed) {\n        return; // ignore \"close\" for void tags\n      }\n\n      var ph = node.isVoid || !closed ? node.startName : node.closeName;\n      var content = {\n        type: type,\n        index: index,\n        ctx: this.id,\n        isVoid: node.isVoid,\n        closed: closed\n      };\n      updatePlaceholderMap(this.placeholders, ph, content);\n    }\n  }, {\n    key: \"icus\",\n    get: function get() {\n      return this._registry.icus;\n    }\n  }, {\n    key: \"isRoot\",\n    get: function get() {\n      return this.level === 0;\n    }\n  }, {\n    key: \"isResolved\",\n    get: function get() {\n      return this._unresolvedCtxCount === 0;\n    }\n  }, {\n    key: \"getSerializedPlaceholders\",\n    value: function getSerializedPlaceholders() {\n      var result = new Map();\n      this.placeholders.forEach(function (values, key) {\n        return result.set(key, values.map(serializePlaceholderValue));\n      });\n      return result;\n    } // public API to accumulate i18n-related content\n\n  }, {\n    key: \"appendBinding\",\n    value: function appendBinding(binding) {\n      this.bindings.add(binding);\n    }\n  }, {\n    key: \"appendIcu\",\n    value: function appendIcu(name, ref) {\n      updatePlaceholderMap(this._registry.icus, name, ref);\n    }\n  }, {\n    key: \"appendBoundText\",\n    value: function appendBoundText(node) {\n      var _this162 = this;\n\n      var phs = assembleBoundTextPlaceholders(node, this.bindings.size, this.id);\n      phs.forEach(function (values, key) {\n        return updatePlaceholderMap.apply(void 0, [_this162.placeholders, key].concat(_toConsumableArray(values)));\n      });\n    }\n  }, {\n    key: \"appendTemplate\",\n    value: function appendTemplate(node, index) {\n      // add open and close tags at the same time,\n      // since we process nested templates separately\n      this.appendTag(TagType.TEMPLATE, node, index, false);\n      this.appendTag(TagType.TEMPLATE, node, index, true);\n      this._unresolvedCtxCount++;\n    }\n  }, {\n    key: \"appendElement\",\n    value: function appendElement(node, index, closed) {\n      this.appendTag(TagType.ELEMENT, node, index, closed);\n    }\n  }, {\n    key: \"appendProjection\",\n    value: function appendProjection(node, index) {\n      // Add open and close tags at the same time, since `<ng-content>` has no content,\n      // so when we come across `<ng-content>` we can register both open and close tags.\n      // Note: runtime i18n logic doesn't distinguish `<ng-content>` tag placeholders and\n      // regular element tag placeholders, so we generate element placeholders for both types.\n      this.appendTag(TagType.ELEMENT, node, index, false);\n      this.appendTag(TagType.ELEMENT, node, index, true);\n    }\n    /**\n     * Generates an instance of a child context based on the root one,\n     * when we enter a nested template within I18n section.\n     *\n     * @param index Instruction index of corresponding i18nStart, which initiates this context\n     * @param templateIndex Instruction index of a template which this context belongs to\n     * @param meta Meta information (id, meaning, description, etc) associated with this context\n     *\n     * @returns I18nContext instance\n     */\n\n  }, {\n    key: \"forkChildContext\",\n    value: function forkChildContext(index, templateIndex, meta) {\n      return new I18nContext(index, this.ref, this.level + 1, templateIndex, meta, this._registry);\n    }\n    /**\n     * Reconciles child context into parent one once the end of the i18n block is reached (i18nEnd).\n     *\n     * @param context Child I18nContext instance to be reconciled with parent context.\n     */\n\n  }, {\n    key: \"reconcileChildContext\",\n    value: function reconcileChildContext(context) {\n      var _this163 = this;\n\n      // set the right context id for open and close\n      // template tags, so we can use it as sub-block ids\n      ['start', 'close'].forEach(function (op) {\n        var key = context.meta[\"\".concat(op, \"Name\")];\n        var phs = _this163.placeholders.get(key) || [];\n        var tag = phs.find(findTemplateFn(_this163.id, context.templateIndex));\n\n        if (tag) {\n          tag.ctx = context.id;\n        }\n      }); // reconcile placeholders\n\n      var childPhs = context.placeholders;\n      childPhs.forEach(function (values, key) {\n        var phs = _this163.placeholders.get(key);\n\n        if (!phs) {\n          _this163.placeholders.set(key, values);\n\n          return;\n        } // try to find matching template...\n\n\n        var tmplIdx = phs.findIndex(findTemplateFn(context.id, context.templateIndex));\n\n        if (tmplIdx >= 0) {\n          // ... if found - replace it with nested template content\n          var isCloseTag = key.startsWith('CLOSE');\n          var isTemplateTag = key.endsWith('NG-TEMPLATE');\n\n          if (isTemplateTag) {\n            // current template's content is placed before or after\n            // parent template tag, depending on the open/close atrribute\n            phs.splice.apply(phs, [tmplIdx + (isCloseTag ? 0 : 1), 0].concat(_toConsumableArray(values)));\n          } else {\n            var idx = isCloseTag ? values.length - 1 : 0;\n            values[idx].tmpl = phs[tmplIdx];\n            phs.splice.apply(phs, [tmplIdx, 1].concat(_toConsumableArray(values)));\n          }\n        } else {\n          // ... otherwise just append content to placeholder value\n          phs.push.apply(phs, _toConsumableArray(values));\n        }\n\n        _this163.placeholders.set(key, phs);\n      });\n      this._unresolvedCtxCount--;\n    }\n  }]);\n\n  return I18nContext;\n}(); //\n// Helper methods\n//\n\n\nfunction wrap(symbol, index, contextId, closed) {\n  var state = closed ? '/' : '';\n  return wrapI18nPlaceholder(\"\".concat(state).concat(symbol).concat(index), contextId);\n}\n\nfunction wrapTag(symbol, _ref13, closed) {\n  var index = _ref13.index,\n      ctx = _ref13.ctx,\n      isVoid = _ref13.isVoid;\n  return isVoid ? wrap(symbol, index, ctx) + wrap(symbol, index, ctx, true) : wrap(symbol, index, ctx, closed);\n}\n\nfunction findTemplateFn(ctx, templateIndex) {\n  return function (token) {\n    return _typeof(token) === 'object' && token.type === TagType.TEMPLATE && token.index === templateIndex && token.ctx === ctx;\n  };\n}\n\nfunction serializePlaceholderValue(value) {\n  var element = function element(data, closed) {\n    return wrapTag('#', data, closed);\n  };\n\n  var template = function template(data, closed) {\n    return wrapTag('*', data, closed);\n  };\n\n  var projection = function projection(data, closed) {\n    return wrapTag('!', data, closed);\n  };\n\n  switch (value.type) {\n    case TagType.ELEMENT:\n      // close element tag\n      if (value.closed) {\n        return element(value, true) + (value.tmpl ? template(value.tmpl, true) : '');\n      } // open element tag that also initiates a template\n\n\n      if (value.tmpl) {\n        return template(value.tmpl) + element(value) + (value.isVoid ? template(value.tmpl, true) : '');\n      }\n\n      return element(value);\n\n    case TagType.TEMPLATE:\n      return template(value, value.closed);\n\n    default:\n      return value;\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar IcuSerializerVisitor = /*#__PURE__*/function () {\n  function IcuSerializerVisitor() {\n    _classCallCheck(this, IcuSerializerVisitor);\n  }\n\n  _createClass(IcuSerializerVisitor, [{\n    key: \"visitText\",\n    value: function visitText(text) {\n      return text.value;\n    }\n  }, {\n    key: \"visitContainer\",\n    value: function visitContainer(container) {\n      var _this164 = this;\n\n      return container.children.map(function (child) {\n        return child.visit(_this164);\n      }).join('');\n    }\n  }, {\n    key: \"visitIcu\",\n    value: function visitIcu(icu) {\n      var _this165 = this;\n\n      var strCases = Object.keys(icu.cases).map(function (k) {\n        return \"\".concat(k, \" {\").concat(icu.cases[k].visit(_this165), \"}\");\n      });\n      var result = \"{\".concat(icu.expressionPlaceholder, \", \").concat(icu.type, \", \").concat(strCases.join(' '), \"}\");\n      return result;\n    }\n  }, {\n    key: \"visitTagPlaceholder\",\n    value: function visitTagPlaceholder(ph) {\n      var _this166 = this;\n\n      return ph.isVoid ? this.formatPh(ph.startName) : \"\".concat(this.formatPh(ph.startName)).concat(ph.children.map(function (child) {\n        return child.visit(_this166);\n      }).join('')).concat(this.formatPh(ph.closeName));\n    }\n  }, {\n    key: \"visitPlaceholder\",\n    value: function visitPlaceholder(ph) {\n      return this.formatPh(ph.name);\n    }\n  }, {\n    key: \"visitIcuPlaceholder\",\n    value: function visitIcuPlaceholder(ph, context) {\n      return this.formatPh(ph.name);\n    }\n  }, {\n    key: \"formatPh\",\n    value: function formatPh(value) {\n      return \"{\".concat(formatI18nPlaceholderName(value,\n      /* useCamelCase */\n      false), \"}\");\n    }\n  }]);\n\n  return IcuSerializerVisitor;\n}();\n\nvar serializer = new IcuSerializerVisitor();\n\nfunction serializeIcuNode(icu) {\n  return icu.visit(serializer);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar TAG_TO_PLACEHOLDER_NAMES = {\n  'A': 'LINK',\n  'B': 'BOLD_TEXT',\n  'BR': 'LINE_BREAK',\n  'EM': 'EMPHASISED_TEXT',\n  'H1': 'HEADING_LEVEL1',\n  'H2': 'HEADING_LEVEL2',\n  'H3': 'HEADING_LEVEL3',\n  'H4': 'HEADING_LEVEL4',\n  'H5': 'HEADING_LEVEL5',\n  'H6': 'HEADING_LEVEL6',\n  'HR': 'HORIZONTAL_RULE',\n  'I': 'ITALIC_TEXT',\n  'LI': 'LIST_ITEM',\n  'LINK': 'MEDIA_LINK',\n  'OL': 'ORDERED_LIST',\n  'P': 'PARAGRAPH',\n  'Q': 'QUOTATION',\n  'S': 'STRIKETHROUGH_TEXT',\n  'SMALL': 'SMALL_TEXT',\n  'SUB': 'SUBSTRIPT',\n  'SUP': 'SUPERSCRIPT',\n  'TBODY': 'TABLE_BODY',\n  'TD': 'TABLE_CELL',\n  'TFOOT': 'TABLE_FOOTER',\n  'TH': 'TABLE_HEADER_CELL',\n  'THEAD': 'TABLE_HEADER',\n  'TR': 'TABLE_ROW',\n  'TT': 'MONOSPACED_TEXT',\n  'U': 'UNDERLINED_TEXT',\n  'UL': 'UNORDERED_LIST'\n};\n/**\n * Creates unique names for placeholder with different content.\n *\n * Returns the same placeholder name when the content is identical.\n */\n\nvar PlaceholderRegistry = /*#__PURE__*/function () {\n  function PlaceholderRegistry() {\n    _classCallCheck(this, PlaceholderRegistry);\n\n    // Count the occurrence of the base name top generate a unique name\n    this._placeHolderNameCounts = {}; // Maps signature to placeholder names\n\n    this._signatureToName = {};\n  }\n\n  _createClass(PlaceholderRegistry, [{\n    key: \"getStartTagPlaceholderName\",\n    value: function getStartTagPlaceholderName(tag, attrs, isVoid) {\n      var signature = this._hashTag(tag, attrs, isVoid);\n\n      if (this._signatureToName[signature]) {\n        return this._signatureToName[signature];\n      }\n\n      var upperTag = tag.toUpperCase();\n      var baseName = TAG_TO_PLACEHOLDER_NAMES[upperTag] || \"TAG_\".concat(upperTag);\n\n      var name = this._generateUniqueName(isVoid ? baseName : \"START_\".concat(baseName));\n\n      this._signatureToName[signature] = name;\n      return name;\n    }\n  }, {\n    key: \"getCloseTagPlaceholderName\",\n    value: function getCloseTagPlaceholderName(tag) {\n      var signature = this._hashClosingTag(tag);\n\n      if (this._signatureToName[signature]) {\n        return this._signatureToName[signature];\n      }\n\n      var upperTag = tag.toUpperCase();\n      var baseName = TAG_TO_PLACEHOLDER_NAMES[upperTag] || \"TAG_\".concat(upperTag);\n\n      var name = this._generateUniqueName(\"CLOSE_\".concat(baseName));\n\n      this._signatureToName[signature] = name;\n      return name;\n    }\n  }, {\n    key: \"getPlaceholderName\",\n    value: function getPlaceholderName(name, content) {\n      var upperName = name.toUpperCase();\n      var signature = \"PH: \".concat(upperName, \"=\").concat(content);\n\n      if (this._signatureToName[signature]) {\n        return this._signatureToName[signature];\n      }\n\n      var uniqueName = this._generateUniqueName(upperName);\n\n      this._signatureToName[signature] = uniqueName;\n      return uniqueName;\n    }\n  }, {\n    key: \"getUniquePlaceholder\",\n    value: function getUniquePlaceholder(name) {\n      return this._generateUniqueName(name.toUpperCase());\n    } // Generate a hash for a tag - does not take attribute order into account\n\n  }, {\n    key: \"_hashTag\",\n    value: function _hashTag(tag, attrs, isVoid) {\n      var start = \"<\".concat(tag);\n      var strAttrs = Object.keys(attrs).sort().map(function (name) {\n        return \" \".concat(name, \"=\").concat(attrs[name]);\n      }).join('');\n      var end = isVoid ? '/>' : \"></\".concat(tag, \">\");\n      return start + strAttrs + end;\n    }\n  }, {\n    key: \"_hashClosingTag\",\n    value: function _hashClosingTag(tag) {\n      return this._hashTag(\"/\".concat(tag), {}, false);\n    }\n  }, {\n    key: \"_generateUniqueName\",\n    value: function _generateUniqueName(base) {\n      var seen = this._placeHolderNameCounts.hasOwnProperty(base);\n\n      if (!seen) {\n        this._placeHolderNameCounts[base] = 1;\n        return base;\n      }\n\n      var id = this._placeHolderNameCounts[base];\n      this._placeHolderNameCounts[base] = id + 1;\n      return \"\".concat(base, \"_\").concat(id);\n    }\n  }]);\n\n  return PlaceholderRegistry;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar _expParser = new Parser$1(new Lexer());\n/**\n * Returns a function converting html nodes to an i18n Message given an interpolationConfig\n */\n\n\nfunction createI18nMessageFactory(interpolationConfig) {\n  var visitor = new _I18nVisitor(_expParser, interpolationConfig);\n  return function (nodes, meaning, description, customId, visitNodeFn) {\n    return visitor.toI18nMessage(nodes, meaning, description, customId, visitNodeFn);\n  };\n}\n\nfunction noopVisitNodeFn(_html, i18n) {\n  return i18n;\n}\n\nvar _I18nVisitor = /*#__PURE__*/function () {\n  function _I18nVisitor(_expressionParser, _interpolationConfig) {\n    _classCallCheck(this, _I18nVisitor);\n\n    this._expressionParser = _expressionParser;\n    this._interpolationConfig = _interpolationConfig;\n  }\n\n  _createClass(_I18nVisitor, [{\n    key: \"toI18nMessage\",\n    value: function toI18nMessage(nodes) {\n      var meaning = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';\n      var description = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : '';\n      var customId = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : '';\n      var visitNodeFn = arguments.length > 4 ? arguments[4] : undefined;\n      var context = {\n        isIcu: nodes.length == 1 && nodes[0] instanceof Expansion,\n        icuDepth: 0,\n        placeholderRegistry: new PlaceholderRegistry(),\n        placeholderToContent: {},\n        placeholderToMessage: {},\n        visitNodeFn: visitNodeFn || noopVisitNodeFn\n      };\n      var i18nodes = visitAll$1(this, nodes, context);\n      return new Message(i18nodes, context.placeholderToContent, context.placeholderToMessage, meaning, description, customId);\n    }\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(el, context) {\n      var _a;\n\n      var children = visitAll$1(this, el.children, context);\n      var attrs = {};\n      el.attrs.forEach(function (attr) {\n        // Do not visit the attributes, translatable ones are top-level ASTs\n        attrs[attr.name] = attr.value;\n      });\n      var isVoid = getHtmlTagDefinition(el.name).isVoid;\n      var startPhName = context.placeholderRegistry.getStartTagPlaceholderName(el.name, attrs, isVoid);\n      context.placeholderToContent[startPhName] = {\n        text: el.startSourceSpan.toString(),\n        sourceSpan: el.startSourceSpan\n      };\n      var closePhName = '';\n\n      if (!isVoid) {\n        closePhName = context.placeholderRegistry.getCloseTagPlaceholderName(el.name);\n        context.placeholderToContent[closePhName] = {\n          text: \"</\".concat(el.name, \">\"),\n          sourceSpan: (_a = el.endSourceSpan) !== null && _a !== void 0 ? _a : el.sourceSpan\n        };\n      }\n\n      var node = new TagPlaceholder(el.name, attrs, startPhName, closePhName, children, isVoid, el.sourceSpan, el.startSourceSpan, el.endSourceSpan);\n      return context.visitNodeFn(el, node);\n    }\n  }, {\n    key: \"visitAttribute\",\n    value: function visitAttribute(attribute, context) {\n      var node = this._visitTextWithInterpolation(attribute.value, attribute.sourceSpan, context);\n\n      return context.visitNodeFn(attribute, node);\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text, context) {\n      var node = this._visitTextWithInterpolation(text.value, text.sourceSpan, context);\n\n      return context.visitNodeFn(text, node);\n    }\n  }, {\n    key: \"visitComment\",\n    value: function visitComment(comment, context) {\n      return null;\n    }\n  }, {\n    key: \"visitExpansion\",\n    value: function visitExpansion(icu, context) {\n      var _this167 = this;\n\n      context.icuDepth++;\n      var i18nIcuCases = {};\n      var i18nIcu = new Icu$1(icu.switchValue, icu.type, i18nIcuCases, icu.sourceSpan);\n      icu.cases.forEach(function (caze) {\n        i18nIcuCases[caze.value] = new Container(caze.expression.map(function (node) {\n          return node.visit(_this167, context);\n        }), caze.expSourceSpan);\n      });\n      context.icuDepth--;\n\n      if (context.isIcu || context.icuDepth > 0) {\n        // Returns an ICU node when:\n        // - the message (vs a part of the message) is an ICU message, or\n        // - the ICU message is nested.\n        var expPh = context.placeholderRegistry.getUniquePlaceholder(\"VAR_\".concat(icu.type));\n        i18nIcu.expressionPlaceholder = expPh;\n        context.placeholderToContent[expPh] = {\n          text: icu.switchValue,\n          sourceSpan: icu.switchValueSourceSpan\n        };\n        return context.visitNodeFn(icu, i18nIcu);\n      } // Else returns a placeholder\n      // ICU placeholders should not be replaced with their original content but with the their\n      // translations.\n      // TODO(vicb): add a html.Node -> i18n.Message cache to avoid having to re-create the msg\n\n\n      var phName = context.placeholderRegistry.getPlaceholderName('ICU', icu.sourceSpan.toString());\n      context.placeholderToMessage[phName] = this.toI18nMessage([icu], '', '', '', undefined);\n      var node = new IcuPlaceholder(i18nIcu, phName, icu.sourceSpan);\n      return context.visitNodeFn(icu, node);\n    }\n  }, {\n    key: \"visitExpansionCase\",\n    value: function visitExpansionCase(_icuCase, _context) {\n      throw new Error('Unreachable code');\n    }\n  }, {\n    key: \"_visitTextWithInterpolation\",\n    value: function _visitTextWithInterpolation(text, sourceSpan, context) {\n      var splitInterpolation = this._expressionParser.splitInterpolation(text, sourceSpan.start.toString(), this._interpolationConfig);\n\n      if (!splitInterpolation) {\n        // No expression, return a single text\n        return new Text$1(text, sourceSpan);\n      } // Return a group of text + expressions\n\n\n      var nodes = [];\n      var container = new Container(nodes, sourceSpan);\n      var _this$_interpolationC = this._interpolationConfig,\n          sDelimiter = _this$_interpolationC.start,\n          eDelimiter = _this$_interpolationC.end;\n\n      for (var i = 0; i < splitInterpolation.strings.length - 1; i++) {\n        var expression = splitInterpolation.expressions[i];\n        var baseName = _extractPlaceholderName(expression) || 'INTERPOLATION';\n        var phName = context.placeholderRegistry.getPlaceholderName(baseName, expression);\n\n        if (splitInterpolation.strings[i].length) {\n          // No need to add empty strings\n          var stringSpan = getOffsetSourceSpan(sourceSpan, splitInterpolation.stringSpans[i]);\n          nodes.push(new Text$1(splitInterpolation.strings[i], stringSpan));\n        }\n\n        var expressionSpan = getOffsetSourceSpan(sourceSpan, splitInterpolation.expressionsSpans[i]);\n        nodes.push(new Placeholder(expression, phName, expressionSpan));\n        context.placeholderToContent[phName] = {\n          text: sDelimiter + expression + eDelimiter,\n          sourceSpan: expressionSpan\n        };\n      } // The last index contains no expression\n\n\n      var lastStringIdx = splitInterpolation.strings.length - 1;\n\n      if (splitInterpolation.strings[lastStringIdx].length) {\n        var _stringSpan = getOffsetSourceSpan(sourceSpan, splitInterpolation.stringSpans[lastStringIdx]);\n\n        nodes.push(new Text$1(splitInterpolation.strings[lastStringIdx], _stringSpan));\n      }\n\n      return container;\n    }\n  }]);\n\n  return _I18nVisitor;\n}();\n\nfunction getOffsetSourceSpan(sourceSpan, _ref14) {\n  var start = _ref14.start,\n      end = _ref14.end;\n  return new ParseSourceSpan(sourceSpan.fullStart.moveBy(start), sourceSpan.fullStart.moveBy(end));\n}\n\nvar _CUSTOM_PH_EXP = /\\/\\/[\\s\\S]*i18n[\\s\\S]*\\([\\s\\S]*ph[\\s\\S]*=[\\s\\S]*(\"|')([\\s\\S]*?)\\1[\\s\\S]*\\)/g;\n\nfunction _extractPlaceholderName(input) {\n  return input.split(_CUSTOM_PH_EXP)[2];\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar setI18nRefs = function setI18nRefs(htmlNode, i18nNode) {\n  if (htmlNode instanceof NodeWithI18n) {\n    if (i18nNode instanceof IcuPlaceholder && htmlNode.i18n instanceof Message) {\n      // This html node represents an ICU but this is a second processing pass, and the legacy id\n      // was computed in the previous pass and stored in the `i18n` property as a message.\n      // We are about to wipe out that property so capture the previous message to be reused when\n      // generating the message for this ICU later. See `_generateI18nMessage()`.\n      i18nNode.previousMessage = htmlNode.i18n;\n    }\n\n    htmlNode.i18n = i18nNode;\n  }\n\n  return i18nNode;\n};\n/**\n * This visitor walks over HTML parse tree and converts information stored in\n * i18n-related attributes (\"i18n\" and \"i18n-*\") into i18n meta object that is\n * stored with other element's and attribute's information.\n */\n\n\nvar I18nMetaVisitor = /*#__PURE__*/function () {\n  function I18nMetaVisitor() {\n    var interpolationConfig = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : DEFAULT_INTERPOLATION_CONFIG;\n    var keepI18nAttrs = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n    var enableI18nLegacyMessageIdFormat = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n\n    _classCallCheck(this, I18nMetaVisitor);\n\n    this.interpolationConfig = interpolationConfig;\n    this.keepI18nAttrs = keepI18nAttrs;\n    this.enableI18nLegacyMessageIdFormat = enableI18nLegacyMessageIdFormat; // whether visited nodes contain i18n information\n\n    this.hasI18nMeta = false; // i18n message generation factory\n\n    this._createI18nMessage = createI18nMessageFactory(this.interpolationConfig);\n  }\n\n  _createClass(I18nMetaVisitor, [{\n    key: \"_generateI18nMessage\",\n    value: function _generateI18nMessage(nodes) {\n      var meta = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';\n      var visitNodeFn = arguments.length > 2 ? arguments[2] : undefined;\n\n      var _this$_parseMetadata = this._parseMetadata(meta),\n          meaning = _this$_parseMetadata.meaning,\n          description = _this$_parseMetadata.description,\n          customId = _this$_parseMetadata.customId;\n\n      var message = this._createI18nMessage(nodes, meaning, description, customId, visitNodeFn);\n\n      this._setMessageId(message, meta);\n\n      this._setLegacyIds(message, meta);\n\n      return message;\n    }\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(element) {\n      if (hasI18nAttrs(element)) {\n        this.hasI18nMeta = true;\n        var attrs = [];\n        var attrsMeta = {};\n\n        var _iterator13 = _createForOfIteratorHelper(element.attrs),\n            _step13;\n\n        try {\n          for (_iterator13.s(); !(_step13 = _iterator13.n()).done;) {\n            var _attr = _step13.value;\n\n            if (_attr.name === I18N_ATTR) {\n              // root 'i18n' node attribute\n              var i18n = element.i18n || _attr.value;\n\n              var message = this._generateI18nMessage(element.children, i18n, setI18nRefs); // do not assign empty i18n meta\n\n\n              if (message.nodes.length) {\n                element.i18n = message;\n              }\n            } else if (_attr.name.startsWith(I18N_ATTR_PREFIX)) {\n              // 'i18n-*' attributes\n              var key = _attr.name.slice(I18N_ATTR_PREFIX.length);\n\n              attrsMeta[key] = _attr.value;\n            } else {\n              // non-i18n attributes\n              attrs.push(_attr);\n            }\n          } // set i18n meta for attributes\n\n        } catch (err) {\n          _iterator13.e(err);\n        } finally {\n          _iterator13.f();\n        }\n\n        if (Object.keys(attrsMeta).length) {\n          var _iterator14 = _createForOfIteratorHelper(attrs),\n              _step14;\n\n          try {\n            for (_iterator14.s(); !(_step14 = _iterator14.n()).done;) {\n              var attr = _step14.value;\n              var meta = attrsMeta[attr.name]; // do not create translation for empty attributes\n\n              if (meta !== undefined && attr.value) {\n                attr.i18n = this._generateI18nMessage([attr], attr.i18n || meta);\n              }\n            }\n          } catch (err) {\n            _iterator14.e(err);\n          } finally {\n            _iterator14.f();\n          }\n        }\n\n        if (!this.keepI18nAttrs) {\n          // update element's attributes,\n          // keeping only non-i18n related ones\n          element.attrs = attrs;\n        }\n      }\n\n      visitAll$1(this, element.children, element.i18n);\n      return element;\n    }\n  }, {\n    key: \"visitExpansion\",\n    value: function visitExpansion(expansion, currentMessage) {\n      var message;\n      var meta = expansion.i18n;\n      this.hasI18nMeta = true;\n\n      if (meta instanceof IcuPlaceholder) {\n        // set ICU placeholder name (e.g. \"ICU_1\"),\n        // generated while processing root element contents,\n        // so we can reference it when we output translation\n        var name = meta.name;\n        message = this._generateI18nMessage([expansion], meta);\n        var icu = icuFromI18nMessage(message);\n        icu.name = name;\n      } else {\n        // ICU is a top level message, try to use metadata from container element if provided via\n        // `context` argument. Note: context may not be available for standalone ICUs (without\n        // wrapping element), so fallback to ICU metadata in this case.\n        message = this._generateI18nMessage([expansion], currentMessage || meta);\n      }\n\n      expansion.i18n = message;\n      return expansion;\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text) {\n      return text;\n    }\n  }, {\n    key: \"visitAttribute\",\n    value: function visitAttribute(attribute) {\n      return attribute;\n    }\n  }, {\n    key: \"visitComment\",\n    value: function visitComment(comment) {\n      return comment;\n    }\n  }, {\n    key: \"visitExpansionCase\",\n    value: function visitExpansionCase(expansionCase) {\n      return expansionCase;\n    }\n    /**\n     * Parse the general form `meta` passed into extract the explicit metadata needed to create a\n     * `Message`.\n     *\n     * There are three possibilities for the `meta` variable\n     * 1) a string from an `i18n` template attribute: parse it to extract the metadata values.\n     * 2) a `Message` from a previous processing pass: reuse the metadata values in the message.\n     * 4) other: ignore this and just process the message metadata as normal\n     *\n     * @param meta the bucket that holds information about the message\n     * @returns the parsed metadata.\n     */\n\n  }, {\n    key: \"_parseMetadata\",\n    value: function _parseMetadata(meta) {\n      return typeof meta === 'string' ? parseI18nMeta(meta) : meta instanceof Message ? meta : {};\n    }\n    /**\n     * Generate (or restore) message id if not specified already.\n     */\n\n  }, {\n    key: \"_setMessageId\",\n    value: function _setMessageId(message, meta) {\n      if (!message.id) {\n        message.id = meta instanceof Message && meta.id || decimalDigest(message);\n      }\n    }\n    /**\n     * Update the `message` with a `legacyId` if necessary.\n     *\n     * @param message the message whose legacy id should be set\n     * @param meta information about the message being processed\n     */\n\n  }, {\n    key: \"_setLegacyIds\",\n    value: function _setLegacyIds(message, meta) {\n      if (this.enableI18nLegacyMessageIdFormat) {\n        message.legacyIds = [computeDigest(message), computeDecimalDigest(message)];\n      } else if (typeof meta !== 'string') {\n        // This occurs if we are doing the 2nd pass after whitespace removal (see `parseTemplate()` in\n        // `packages/compiler/src/render3/view/template.ts`).\n        // In that case we want to reuse the legacy message generated in the 1st pass (see\n        // `setI18nRefs()`).\n        var previousMessage = meta instanceof Message ? meta : meta instanceof IcuPlaceholder ? meta.previousMessage : undefined;\n        message.legacyIds = previousMessage ? previousMessage.legacyIds : [];\n      }\n    }\n  }]);\n\n  return I18nMetaVisitor;\n}();\n/** I18n separators for metadata **/\n\n\nvar I18N_MEANING_SEPARATOR = '|';\nvar I18N_ID_SEPARATOR = '@@';\n/**\n * Parses i18n metas like:\n *  - \"@@id\",\n *  - \"description[@@id]\",\n *  - \"meaning|description[@@id]\"\n * and returns an object with parsed output.\n *\n * @param meta String that represents i18n meta\n * @returns Object with id, meaning and description fields\n */\n\nfunction parseI18nMeta() {\n  var meta = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';\n  var customId;\n  var meaning;\n  var description;\n  meta = meta.trim();\n\n  if (meta) {\n    var idIndex = meta.indexOf(I18N_ID_SEPARATOR);\n    var descIndex = meta.indexOf(I18N_MEANING_SEPARATOR);\n    var meaningAndDesc;\n\n    var _ref15 = idIndex > -1 ? [meta.slice(0, idIndex), meta.slice(idIndex + 2)] : [meta, ''];\n\n    var _ref16 = _slicedToArray(_ref15, 2);\n\n    meaningAndDesc = _ref16[0];\n    customId = _ref16[1];\n\n    var _ref17 = descIndex > -1 ? [meaningAndDesc.slice(0, descIndex), meaningAndDesc.slice(descIndex + 1)] : ['', meaningAndDesc];\n\n    var _ref18 = _slicedToArray(_ref17, 2);\n\n    meaning = _ref18[0];\n    description = _ref18[1];\n  }\n\n  return {\n    customId: customId,\n    meaning: meaning,\n    description: description\n  };\n} // Converts i18n meta information for a message (id, description, meaning)\n// to a JsDoc statement formatted as expected by the Closure compiler.\n\n\nfunction i18nMetaToJSDoc(meta) {\n  var tags = [];\n\n  if (meta.description) {\n    tags.push({\n      tagName: \"desc\"\n      /* Desc */\n      ,\n      text: meta.description\n    });\n  }\n\n  if (meta.meaning) {\n    tags.push({\n      tagName: \"meaning\"\n      /* Meaning */\n      ,\n      text: meta.meaning\n    });\n  }\n\n  return tags.length == 0 ? null : jsDocComment(tags);\n}\n/** Closure uses `goog.getMsg(message)` to lookup translations */\n\n\nvar GOOG_GET_MSG = 'goog.getMsg';\n\nfunction createGoogleGetMsgStatements(variable$1, message, closureVar, params) {\n  var messageString = serializeI18nMessageForGetMsg(message);\n  var args = [literal(messageString)];\n\n  if (Object.keys(params).length) {\n    args.push(mapLiteral(params, true));\n  } // /**\n  //  * @desc description of message\n  //  * @meaning meaning of message\n  //  */\n  // const MSG_... = goog.getMsg(..);\n  // I18N_X = MSG_...;\n\n\n  var googGetMsgStmt = closureVar.set(variable(GOOG_GET_MSG).callFn(args)).toConstDecl();\n  var metaComment = i18nMetaToJSDoc(message);\n\n  if (metaComment !== null) {\n    googGetMsgStmt.addLeadingComment(metaComment);\n  }\n\n  var i18nAssignmentStmt = new ExpressionStatement(variable$1.set(closureVar));\n  return [googGetMsgStmt, i18nAssignmentStmt];\n}\n/**\n * This visitor walks over i18n tree and generates its string representation, including ICUs and\n * placeholders in `{$placeholder}` (for plain messages) or `{PLACEHOLDER}` (inside ICUs) format.\n */\n\n\nvar GetMsgSerializerVisitor = /*#__PURE__*/function () {\n  function GetMsgSerializerVisitor() {\n    _classCallCheck(this, GetMsgSerializerVisitor);\n  }\n\n  _createClass(GetMsgSerializerVisitor, [{\n    key: \"formatPh\",\n    value: function formatPh(value) {\n      return \"{$\".concat(formatI18nPlaceholderName(value), \"}\");\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text) {\n      return text.value;\n    }\n  }, {\n    key: \"visitContainer\",\n    value: function visitContainer(container) {\n      var _this168 = this;\n\n      return container.children.map(function (child) {\n        return child.visit(_this168);\n      }).join('');\n    }\n  }, {\n    key: \"visitIcu\",\n    value: function visitIcu(icu) {\n      return serializeIcuNode(icu);\n    }\n  }, {\n    key: \"visitTagPlaceholder\",\n    value: function visitTagPlaceholder(ph) {\n      var _this169 = this;\n\n      return ph.isVoid ? this.formatPh(ph.startName) : \"\".concat(this.formatPh(ph.startName)).concat(ph.children.map(function (child) {\n        return child.visit(_this169);\n      }).join('')).concat(this.formatPh(ph.closeName));\n    }\n  }, {\n    key: \"visitPlaceholder\",\n    value: function visitPlaceholder(ph) {\n      return this.formatPh(ph.name);\n    }\n  }, {\n    key: \"visitIcuPlaceholder\",\n    value: function visitIcuPlaceholder(ph, context) {\n      return this.formatPh(ph.name);\n    }\n  }]);\n\n  return GetMsgSerializerVisitor;\n}();\n\nvar serializerVisitor$1 = new GetMsgSerializerVisitor();\n\nfunction serializeI18nMessageForGetMsg(message) {\n  return message.nodes.map(function (node) {\n    return node.visit(serializerVisitor$1, null);\n  }).join('');\n}\n\nfunction createLocalizeStatements(variable, message, params) {\n  var _serializeI18nMessage = serializeI18nMessageForLocalize(message),\n      messageParts = _serializeI18nMessage.messageParts,\n      placeHolders = _serializeI18nMessage.placeHolders;\n\n  var sourceSpan = getSourceSpan(message);\n  var expressions = placeHolders.map(function (ph) {\n    return params[ph.text];\n  });\n  var localizedString$1 = localizedString(message, messageParts, placeHolders, expressions, sourceSpan);\n  var variableInitialization = variable.set(localizedString$1);\n  return [new ExpressionStatement(variableInitialization)];\n}\n/**\n * This visitor walks over an i18n tree, capturing literal strings and placeholders.\n *\n * The result can be used for generating the `$localize` tagged template literals.\n */\n\n\nvar LocalizeSerializerVisitor = /*#__PURE__*/function () {\n  function LocalizeSerializerVisitor() {\n    _classCallCheck(this, LocalizeSerializerVisitor);\n  }\n\n  _createClass(LocalizeSerializerVisitor, [{\n    key: \"visitText\",\n    value: function visitText(text, context) {\n      if (context[context.length - 1] instanceof LiteralPiece) {\n        // Two literal pieces in a row means that there was some comment node in-between.\n        context[context.length - 1].text += text.value;\n      } else {\n        context.push(new LiteralPiece(text.value, text.sourceSpan));\n      }\n    }\n  }, {\n    key: \"visitContainer\",\n    value: function visitContainer(container, context) {\n      var _this170 = this;\n\n      container.children.forEach(function (child) {\n        return child.visit(_this170, context);\n      });\n    }\n  }, {\n    key: \"visitIcu\",\n    value: function visitIcu(icu, context) {\n      context.push(new LiteralPiece(serializeIcuNode(icu), icu.sourceSpan));\n    }\n  }, {\n    key: \"visitTagPlaceholder\",\n    value: function visitTagPlaceholder(ph, context) {\n      var _this171 = this;\n\n      var _a, _b;\n\n      context.push(this.createPlaceholderPiece(ph.startName, (_a = ph.startSourceSpan) !== null && _a !== void 0 ? _a : ph.sourceSpan));\n\n      if (!ph.isVoid) {\n        ph.children.forEach(function (child) {\n          return child.visit(_this171, context);\n        });\n        context.push(this.createPlaceholderPiece(ph.closeName, (_b = ph.endSourceSpan) !== null && _b !== void 0 ? _b : ph.sourceSpan));\n      }\n    }\n  }, {\n    key: \"visitPlaceholder\",\n    value: function visitPlaceholder(ph, context) {\n      context.push(this.createPlaceholderPiece(ph.name, ph.sourceSpan));\n    }\n  }, {\n    key: \"visitIcuPlaceholder\",\n    value: function visitIcuPlaceholder(ph, context) {\n      context.push(this.createPlaceholderPiece(ph.name, ph.sourceSpan));\n    }\n  }, {\n    key: \"createPlaceholderPiece\",\n    value: function createPlaceholderPiece(name, sourceSpan) {\n      return new PlaceholderPiece(formatI18nPlaceholderName(name,\n      /* useCamelCase */\n      false), sourceSpan);\n    }\n  }]);\n\n  return LocalizeSerializerVisitor;\n}();\n\nvar serializerVisitor$2 = new LocalizeSerializerVisitor();\n/**\n * Serialize an i18n message into two arrays: messageParts and placeholders.\n *\n * These arrays will be used to generate `$localize` tagged template literals.\n *\n * @param message The message to be serialized.\n * @returns an object containing the messageParts and placeholders.\n */\n\nfunction serializeI18nMessageForLocalize(message) {\n  var pieces = [];\n  message.nodes.forEach(function (node) {\n    return node.visit(serializerVisitor$2, pieces);\n  });\n  return processMessagePieces(pieces);\n}\n\nfunction getSourceSpan(message) {\n  var startNode = message.nodes[0];\n  var endNode = message.nodes[message.nodes.length - 1];\n  return new ParseSourceSpan(startNode.sourceSpan.start, endNode.sourceSpan.end, startNode.sourceSpan.fullStart, startNode.sourceSpan.details);\n}\n/**\n * Convert the list of serialized MessagePieces into two arrays.\n *\n * One contains the literal string pieces and the other the placeholders that will be replaced by\n * expressions when rendering `$localize` tagged template literals.\n *\n * @param pieces The pieces to process.\n * @returns an object containing the messageParts and placeholders.\n */\n\n\nfunction processMessagePieces(pieces) {\n  var messageParts = [];\n  var placeHolders = [];\n\n  if (pieces[0] instanceof PlaceholderPiece) {\n    // The first piece was a placeholder so we need to add an initial empty message part.\n    messageParts.push(createEmptyMessagePart(pieces[0].sourceSpan.start));\n  }\n\n  for (var i = 0; i < pieces.length; i++) {\n    var part = pieces[i];\n\n    if (part instanceof LiteralPiece) {\n      messageParts.push(part);\n    } else {\n      placeHolders.push(part);\n\n      if (pieces[i - 1] instanceof PlaceholderPiece) {\n        // There were two placeholders in a row, so we need to add an empty message part.\n        messageParts.push(createEmptyMessagePart(pieces[i - 1].sourceSpan.end));\n      }\n    }\n  }\n\n  if (pieces[pieces.length - 1] instanceof PlaceholderPiece) {\n    // The last piece was a placeholder so we need to add a final empty message part.\n    messageParts.push(createEmptyMessagePart(pieces[pieces.length - 1].sourceSpan.end));\n  }\n\n  return {\n    messageParts: messageParts,\n    placeHolders: placeHolders\n  };\n}\n\nfunction createEmptyMessagePart(location) {\n  return new LiteralPiece('', new ParseSourceSpan(location, location));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// Selector attribute name of `<ng-content>`\n\n\nvar NG_CONTENT_SELECT_ATTR$1 = 'select'; // Attribute name of `ngProjectAs`.\n\nvar NG_PROJECT_AS_ATTR_NAME = 'ngProjectAs'; // Global symbols available only inside event bindings.\n\nvar EVENT_BINDING_SCOPE_GLOBALS = new Set(['$event']); // List of supported global targets for event listeners\n\nvar GLOBAL_TARGET_RESOLVERS = new Map([['window', Identifiers$1.resolveWindow], ['document', Identifiers$1.resolveDocument], ['body', Identifiers$1.resolveBody]]);\nvar LEADING_TRIVIA_CHARS = [' ', '\\n', '\\r', '\\t']; //  if (rf & flags) { .. }\n\nfunction renderFlagCheckIfStmt(flags, statements) {\n  return ifStmt(variable(RENDER_FLAGS).bitwiseAnd(literal(flags), null, false), statements);\n}\n\nfunction prepareEventListenerParameters(eventAst) {\n  var handlerName = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n  var scope = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;\n  var type = eventAst.type,\n      name = eventAst.name,\n      target = eventAst.target,\n      phase = eventAst.phase,\n      handler = eventAst.handler;\n\n  if (target && !GLOBAL_TARGET_RESOLVERS.has(target)) {\n    throw new Error(\"Unexpected global target '\".concat(target, \"' defined for '\").concat(name, \"' event.\\n        Supported list of global targets: \").concat(Array.from(GLOBAL_TARGET_RESOLVERS.keys()), \".\"));\n  }\n\n  var eventArgumentName = '$event';\n  var implicitReceiverAccesses = new Set();\n  var implicitReceiverExpr = scope === null || scope.bindingLevel === 0 ? variable(CONTEXT_NAME) : scope.getOrCreateSharedContextVar(0);\n  var bindingExpr = convertActionBinding(scope, implicitReceiverExpr, handler, 'b', function () {\n    return error('Unexpected interpolation');\n  }, eventAst.handlerSpan, implicitReceiverAccesses, EVENT_BINDING_SCOPE_GLOBALS);\n  var statements = [];\n\n  if (scope) {\n    statements.push.apply(statements, _toConsumableArray(scope.restoreViewStatement()));\n    statements.push.apply(statements, _toConsumableArray(scope.variableDeclarations()));\n  }\n\n  statements.push.apply(statements, _toConsumableArray(bindingExpr.render3Stmts));\n  var eventName = type === 1\n  /* Animation */\n  ? prepareSyntheticListenerName(name, phase) : name;\n  var fnName = handlerName && sanitizeIdentifier(handlerName);\n  var fnArgs = [];\n\n  if (implicitReceiverAccesses.has(eventArgumentName)) {\n    fnArgs.push(new FnParam(eventArgumentName, DYNAMIC_TYPE));\n  }\n\n  var handlerFn = fn(fnArgs, statements, INFERRED_TYPE, null, fnName);\n  var params = [literal(eventName), handlerFn];\n\n  if (target) {\n    params.push(literal(false), // `useCapture` flag, defaults to `false`\n    importExpr(GLOBAL_TARGET_RESOLVERS.get(target)));\n  }\n\n  return params;\n}\n\nfunction createComponentDefConsts() {\n  return {\n    prepareStatements: [],\n    constExpressions: []\n  };\n}\n\nvar TemplateDefinitionBuilder = /*#__PURE__*/function () {\n  function TemplateDefinitionBuilder(constantPool, parentBindingScope) {\n    var _this172 = this;\n\n    var level = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;\n    var contextName = arguments.length > 3 ? arguments[3] : undefined;\n    var i18nContext = arguments.length > 4 ? arguments[4] : undefined;\n    var templateIndex = arguments.length > 5 ? arguments[5] : undefined;\n    var templateName = arguments.length > 6 ? arguments[6] : undefined;\n    var directiveMatcher = arguments.length > 7 ? arguments[7] : undefined;\n    var directives = arguments.length > 8 ? arguments[8] : undefined;\n    var pipeTypeByName = arguments.length > 9 ? arguments[9] : undefined;\n    var pipes = arguments.length > 10 ? arguments[10] : undefined;\n\n    var _namespace = arguments.length > 11 ? arguments[11] : undefined;\n\n    var relativeContextFilePath = arguments.length > 12 ? arguments[12] : undefined;\n    var i18nUseExternalIds = arguments.length > 13 ? arguments[13] : undefined;\n\n    var _constants = arguments.length > 14 && arguments[14] !== undefined ? arguments[14] : createComponentDefConsts();\n\n    _classCallCheck(this, TemplateDefinitionBuilder);\n\n    this.constantPool = constantPool;\n    this.level = level;\n    this.contextName = contextName;\n    this.i18nContext = i18nContext;\n    this.templateIndex = templateIndex;\n    this.templateName = templateName;\n    this.directiveMatcher = directiveMatcher;\n    this.directives = directives;\n    this.pipeTypeByName = pipeTypeByName;\n    this.pipes = pipes;\n    this._namespace = _namespace;\n    this.i18nUseExternalIds = i18nUseExternalIds;\n    this._constants = _constants;\n    this._dataIndex = 0;\n    this._bindingContext = 0;\n    this._prefixCode = [];\n    /**\n     * List of callbacks to generate creation mode instructions. We store them here as we process\n     * the template so bindings in listeners are resolved only once all nodes have been visited.\n     * This ensures all local refs and context variables are available for matching.\n     */\n\n    this._creationCodeFns = [];\n    /**\n     * List of callbacks to generate update mode instructions. We store them here as we process\n     * the template so bindings are resolved only once all nodes have been visited. This ensures\n     * all local refs and context variables are available for matching.\n     */\n\n    this._updateCodeFns = [];\n    /** Index of the currently-selected node. */\n\n    this._currentIndex = 0;\n    /** Temporary variable declarations generated from visiting pipes, literals, etc. */\n\n    this._tempVariables = [];\n    /**\n     * List of callbacks to build nested templates. Nested templates must not be visited until\n     * after the parent template has finished visiting all of its nodes. This ensures that all\n     * local ref bindings in nested templates are able to find local ref values if the refs\n     * are defined after the template declaration.\n     */\n\n    this._nestedTemplateFns = [];\n    this._unsupported = unsupported; // i18n context local to this template\n\n    this.i18n = null; // Number of slots to reserve for pureFunctions\n\n    this._pureFunctionSlots = 0; // Number of binding slots\n\n    this._bindingSlots = 0; // Projection slots found in the template. Projection slots can distribute projected\n    // nodes based on a selector, or can just use the wildcard selector to match\n    // all nodes which aren't matching any selector.\n\n    this._ngContentReservedSlots = []; // Number of non-default selectors found in all parent templates of this template. We need to\n    // track it to properly adjust projection slot index in the `projection` instruction.\n\n    this._ngContentSelectorsOffset = 0; // Expression that should be used as implicit receiver when converting template\n    // expressions to output AST.\n\n    this._implicitReceiverExpr = null; // These should be handled in the template or element directly.\n\n    this.visitReference = invalid$1;\n    this.visitVariable = invalid$1;\n    this.visitTextAttribute = invalid$1;\n    this.visitBoundAttribute = invalid$1;\n    this.visitBoundEvent = invalid$1;\n    this._bindingScope = parentBindingScope.nestedScope(level); // Turn the relative context file path into an identifier by replacing non-alphanumeric\n    // characters with underscores.\n\n    this.fileBasedI18nSuffix = relativeContextFilePath.replace(/[^A-Za-z0-9]/g, '_') + '_';\n    this._valueConverter = new ValueConverter(constantPool, function () {\n      return _this172.allocateDataSlot();\n    }, function (numSlots) {\n      return _this172.allocatePureFunctionSlots(numSlots);\n    }, function (name, localName, slot, value) {\n      var pipeType = pipeTypeByName.get(name);\n\n      if (pipeType) {\n        _this172.pipes.add(pipeType);\n      }\n\n      _this172._bindingScope.set(_this172.level, localName, value);\n\n      _this172.creationInstruction(null, Identifiers$1.pipe, [literal(slot), literal(name)]);\n    });\n  }\n\n  _createClass(TemplateDefinitionBuilder, [{\n    key: \"buildTemplateFunction\",\n    value: function buildTemplateFunction(nodes, variables) {\n      var _this173 = this;\n\n      var ngContentSelectorsOffset = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;\n      var i18n = arguments.length > 3 ? arguments[3] : undefined;\n      this._ngContentSelectorsOffset = ngContentSelectorsOffset;\n\n      if (this._namespace !== Identifiers$1.namespaceHTML) {\n        this.creationInstruction(null, this._namespace);\n      } // Create variable bindings\n\n\n      variables.forEach(function (v) {\n        return _this173.registerContextVariables(v);\n      }); // Initiate i18n context in case:\n      // - this template has parent i18n context\n      // - or the template has i18n meta associated with it,\n      //   but it's not initiated by the Element (e.g. <ng-template i18n>)\n\n      var initI18nContext = this.i18nContext || isI18nRootNode(i18n) && !isSingleI18nIcu(i18n) && !(isSingleElementTemplate(nodes) && nodes[0].i18n === i18n);\n      var selfClosingI18nInstruction = hasTextChildrenOnly(nodes);\n\n      if (initI18nContext) {\n        this.i18nStart(null, i18n, selfClosingI18nInstruction);\n      } // This is the initial pass through the nodes of this template. In this pass, we\n      // queue all creation mode and update mode instructions for generation in the second\n      // pass. It's necessary to separate the passes to ensure local refs are defined before\n      // resolving bindings. We also count bindings in this pass as we walk bound expressions.\n\n\n      visitAll(this, nodes); // Add total binding count to pure function count so pure function instructions are\n      // generated with the correct slot offset when update instructions are processed.\n\n      this._pureFunctionSlots += this._bindingSlots; // Pipes are walked in the first pass (to enqueue `pipe()` creation instructions and\n      // `pipeBind` update instructions), so we have to update the slot offsets manually\n      // to account for bindings.\n\n      this._valueConverter.updatePipeSlotOffsets(this._bindingSlots); // Nested templates must be processed before creation instructions so template()\n      // instructions can be generated with the correct internal const count.\n\n\n      this._nestedTemplateFns.forEach(function (buildTemplateFn) {\n        return buildTemplateFn();\n      }); // Output the `projectionDef` instruction when some `<ng-content>` tags are present.\n      // The `projectionDef` instruction is only emitted for the component template and\n      // is skipped for nested templates (<ng-template> tags).\n\n\n      if (this.level === 0 && this._ngContentReservedSlots.length) {\n        var parameters = []; // By default the `projectionDef` instructions creates one slot for the wildcard\n        // selector if no parameters are passed. Therefore we only want to allocate a new\n        // array for the projection slots if the default projection slot is not sufficient.\n\n        if (this._ngContentReservedSlots.length > 1 || this._ngContentReservedSlots[0] !== '*') {\n          var r3ReservedSlots = this._ngContentReservedSlots.map(function (s) {\n            return s !== '*' ? parseSelectorToR3Selector(s) : s;\n          });\n\n          parameters.push(this.constantPool.getConstLiteral(asLiteral(r3ReservedSlots), true));\n        } // Since we accumulate ngContent selectors while processing template elements,\n        // we *prepend* `projectionDef` to creation instructions block, to put it before\n        // any `projection` instructions\n\n\n        this.creationInstruction(null, Identifiers$1.projectionDef, parameters,\n        /* prepend */\n        true);\n      }\n\n      if (initI18nContext) {\n        this.i18nEnd(null, selfClosingI18nInstruction);\n      } // Generate all the creation mode instructions (e.g. resolve bindings in listeners)\n\n\n      var creationStatements = this._creationCodeFns.map(function (fn) {\n        return fn();\n      }); // Generate all the update mode instructions (e.g. resolve property or text bindings)\n\n\n      var updateStatements = this._updateCodeFns.map(function (fn) {\n        return fn();\n      }); //  Variable declaration must occur after binding resolution so we can generate context\n      //  instructions that build on each other.\n      // e.g. const b = nextContext().$implicit(); const b = nextContext();\n\n\n      var creationVariables = this._bindingScope.viewSnapshotStatements();\n\n      var updateVariables = this._bindingScope.variableDeclarations().concat(this._tempVariables);\n\n      var creationBlock = creationStatements.length > 0 ? [renderFlagCheckIfStmt(1\n      /* Create */\n      , creationVariables.concat(creationStatements))] : [];\n      var updateBlock = updateStatements.length > 0 ? [renderFlagCheckIfStmt(2\n      /* Update */\n      , updateVariables.concat(updateStatements))] : [];\n      return fn( // i.e. (rf: RenderFlags, ctx: any)\n      [new FnParam(RENDER_FLAGS, NUMBER_TYPE), new FnParam(CONTEXT_NAME, null)], [].concat(_toConsumableArray(this._prefixCode), creationBlock, updateBlock), INFERRED_TYPE, null, this.templateName);\n    } // LocalResolver\n\n  }, {\n    key: \"getLocal\",\n    value: function getLocal(name) {\n      return this._bindingScope.get(name);\n    } // LocalResolver\n\n  }, {\n    key: \"notifyImplicitReceiverUse\",\n    value: function notifyImplicitReceiverUse() {\n      this._bindingScope.notifyImplicitReceiverUse();\n    }\n  }, {\n    key: \"i18nTranslate\",\n    value: function i18nTranslate(message) {\n      var _this$_constants$prep;\n\n      var params = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n      var ref = arguments.length > 2 ? arguments[2] : undefined;\n      var transformFn = arguments.length > 3 ? arguments[3] : undefined;\n\n      var _ref = ref || this.i18nGenerateMainBlockVar(); // Closure Compiler requires const names to start with `MSG_` but disallows any other const to\n      // start with `MSG_`. We define a variable starting with `MSG_` just for the `goog.getMsg` call\n\n\n      var closureVar = this.i18nGenerateClosureVar(message.id);\n      var statements = getTranslationDeclStmts(message, _ref, closureVar, params, transformFn);\n\n      (_this$_constants$prep = this._constants.prepareStatements).push.apply(_this$_constants$prep, _toConsumableArray(statements));\n\n      return _ref;\n    }\n  }, {\n    key: \"registerContextVariables\",\n    value: function registerContextVariables(variable$1) {\n      var scopedName = this._bindingScope.freshReferenceName();\n\n      var retrievalLevel = this.level;\n      var lhs = variable(variable$1.name + scopedName);\n\n      this._bindingScope.set(retrievalLevel, variable$1.name, lhs, 1\n      /* CONTEXT */\n      , function (scope, relativeLevel) {\n        var rhs;\n\n        if (scope.bindingLevel === retrievalLevel) {\n          // e.g. ctx\n          rhs = variable(CONTEXT_NAME);\n        } else {\n          var sharedCtxVar = scope.getSharedContextName(retrievalLevel); // e.g. ctx_r0   OR  x(2);\n\n          rhs = sharedCtxVar ? sharedCtxVar : generateNextContextExpr(relativeLevel);\n        } // e.g. const $item$ = x(2).$implicit;\n\n\n        return [lhs.set(rhs.prop(variable$1.value || IMPLICIT_REFERENCE)).toConstDecl()];\n      });\n    }\n  }, {\n    key: \"i18nAppendBindings\",\n    value: function i18nAppendBindings(expressions) {\n      var _this174 = this;\n\n      if (expressions.length > 0) {\n        expressions.forEach(function (expression) {\n          return _this174.i18n.appendBinding(expression);\n        });\n      }\n    }\n  }, {\n    key: \"i18nBindProps\",\n    value: function i18nBindProps(props) {\n      var _this175 = this;\n\n      var bound = {};\n      Object.keys(props).forEach(function (key) {\n        var prop = props[key];\n\n        if (prop instanceof Text) {\n          bound[key] = literal(prop.value);\n        } else {\n          var value = prop.value.visit(_this175._valueConverter);\n\n          _this175.allocateBindingSlots(value);\n\n          if (value instanceof Interpolation) {\n            var strings = value.strings,\n                expressions = value.expressions;\n            var _this175$i18n = _this175.i18n,\n                id = _this175$i18n.id,\n                bindings = _this175$i18n.bindings;\n            var label = assembleI18nBoundString(strings, bindings.size, id);\n\n            _this175.i18nAppendBindings(expressions);\n\n            bound[key] = literal(label);\n          }\n        }\n      });\n      return bound;\n    } // Generates top level vars for i18n blocks (i.e. `i18n_N`).\n\n  }, {\n    key: \"i18nGenerateMainBlockVar\",\n    value: function i18nGenerateMainBlockVar() {\n      return variable(this.constantPool.uniqueName(TRANSLATION_VAR_PREFIX));\n    } // Generates vars with Closure-specific names for i18n blocks (i.e. `MSG_XXX`).\n\n  }, {\n    key: \"i18nGenerateClosureVar\",\n    value: function i18nGenerateClosureVar(messageId) {\n      var name;\n      var suffix = this.fileBasedI18nSuffix.toUpperCase();\n\n      if (this.i18nUseExternalIds) {\n        var prefix = getTranslationConstPrefix(\"EXTERNAL_\");\n        var uniqueSuffix = this.constantPool.uniqueName(suffix);\n        name = \"\".concat(prefix).concat(sanitizeIdentifier(messageId), \"$$\").concat(uniqueSuffix);\n      } else {\n        var _prefix = getTranslationConstPrefix(suffix);\n\n        name = this.constantPool.uniqueName(_prefix);\n      }\n\n      return variable(name);\n    }\n  }, {\n    key: \"i18nUpdateRef\",\n    value: function i18nUpdateRef(context) {\n      var icus = context.icus,\n          meta = context.meta,\n          isRoot = context.isRoot,\n          isResolved = context.isResolved,\n          isEmitted = context.isEmitted;\n\n      if (isRoot && isResolved && !isEmitted && !isSingleI18nIcu(meta)) {\n        context.isEmitted = true;\n        var placeholders = context.getSerializedPlaceholders();\n        var icuMapping = {};\n        var params = placeholders.size ? placeholdersToParams(placeholders) : {};\n\n        if (icus.size) {\n          icus.forEach(function (refs, key) {\n            if (refs.length === 1) {\n              // if we have one ICU defined for a given\n              // placeholder - just output its reference\n              params[key] = refs[0];\n            } else {\n              // ... otherwise we need to activate post-processing\n              // to replace ICU placeholders with proper values\n              var placeholder = wrapI18nPlaceholder(\"\".concat(I18N_ICU_MAPPING_PREFIX).concat(key));\n              params[key] = literal(placeholder);\n              icuMapping[key] = literalArr(refs);\n            }\n          });\n        } // translation requires post processing in 2 cases:\n        // - if we have placeholders with multiple values (ex. `START_DIV`: [�#1�, �#2�, ...])\n        // - if we have multiple ICUs that refer to the same placeholder name\n\n\n        var needsPostprocessing = Array.from(placeholders.values()).some(function (value) {\n          return value.length > 1;\n        }) || Object.keys(icuMapping).length;\n        var transformFn;\n\n        if (needsPostprocessing) {\n          transformFn = function transformFn(raw) {\n            var args = [raw];\n\n            if (Object.keys(icuMapping).length) {\n              args.push(mapLiteral(icuMapping, true));\n            }\n\n            return instruction(null, Identifiers$1.i18nPostprocess, args);\n          };\n        }\n\n        this.i18nTranslate(meta, params, context.ref, transformFn);\n      }\n    }\n  }, {\n    key: \"i18nStart\",\n    value: function i18nStart() {\n      var span = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;\n      var meta = arguments.length > 1 ? arguments[1] : undefined;\n      var selfClosing = arguments.length > 2 ? arguments[2] : undefined;\n      var index = this.allocateDataSlot();\n      this.i18n = this.i18nContext ? this.i18nContext.forkChildContext(index, this.templateIndex, meta) : new I18nContext(index, this.i18nGenerateMainBlockVar(), 0, this.templateIndex, meta); // generate i18nStart instruction\n\n      var _this$i18n = this.i18n,\n          id = _this$i18n.id,\n          ref = _this$i18n.ref;\n      var params = [literal(index), this.addToConsts(ref)];\n\n      if (id > 0) {\n        // do not push 3rd argument (sub-block id)\n        // into i18nStart call for top level i18n context\n        params.push(literal(id));\n      }\n\n      this.creationInstruction(span, selfClosing ? Identifiers$1.i18n : Identifiers$1.i18nStart, params);\n    }\n  }, {\n    key: \"i18nEnd\",\n    value: function i18nEnd() {\n      var _this176 = this;\n\n      var span = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;\n      var selfClosing = arguments.length > 1 ? arguments[1] : undefined;\n\n      if (!this.i18n) {\n        throw new Error('i18nEnd is executed with no i18n context present');\n      }\n\n      if (this.i18nContext) {\n        this.i18nContext.reconcileChildContext(this.i18n);\n        this.i18nUpdateRef(this.i18nContext);\n      } else {\n        this.i18nUpdateRef(this.i18n);\n      } // setup accumulated bindings\n\n\n      var _this$i18n2 = this.i18n,\n          index = _this$i18n2.index,\n          bindings = _this$i18n2.bindings;\n\n      if (bindings.size) {\n        var chainBindings = [];\n        bindings.forEach(function (binding) {\n          chainBindings.push({\n            sourceSpan: span,\n            value: function value() {\n              return _this176.convertPropertyBinding(binding);\n            }\n          });\n        }); // for i18n block, advance to the most recent element index (by taking the current number of\n        // elements and subtracting one) before invoking `i18nExp` instructions, to make sure the\n        // necessary lifecycle hooks of components/directives are properly flushed.\n\n        this.updateInstructionChainWithAdvance(this.getConstCount() - 1, Identifiers$1.i18nExp, chainBindings);\n        this.updateInstruction(span, Identifiers$1.i18nApply, [literal(index)]);\n      }\n\n      if (!selfClosing) {\n        this.creationInstruction(span, Identifiers$1.i18nEnd);\n      }\n\n      this.i18n = null; // reset local i18n context\n    }\n  }, {\n    key: \"i18nAttributesInstruction\",\n    value: function i18nAttributesInstruction(nodeIndex, attrs, sourceSpan) {\n      var _this177 = this;\n\n      var hasBindings = false;\n      var i18nAttrArgs = [];\n      var bindings = [];\n      attrs.forEach(function (attr) {\n        var message = attr.i18n;\n        var converted = attr.value.visit(_this177._valueConverter);\n\n        _this177.allocateBindingSlots(converted);\n\n        if (converted instanceof Interpolation) {\n          var placeholders = assembleBoundTextPlaceholders(message);\n          var params = placeholdersToParams(placeholders);\n          i18nAttrArgs.push(literal(attr.name), _this177.i18nTranslate(message, params));\n          converted.expressions.forEach(function (expression) {\n            hasBindings = true;\n            bindings.push({\n              sourceSpan: sourceSpan,\n              value: function value() {\n                return _this177.convertPropertyBinding(expression);\n              }\n            });\n          });\n        }\n      });\n\n      if (bindings.length > 0) {\n        this.updateInstructionChainWithAdvance(nodeIndex, Identifiers$1.i18nExp, bindings);\n      }\n\n      if (i18nAttrArgs.length > 0) {\n        var index = literal(this.allocateDataSlot());\n        var constIndex = this.addToConsts(literalArr(i18nAttrArgs));\n        this.creationInstruction(sourceSpan, Identifiers$1.i18nAttributes, [index, constIndex]);\n\n        if (hasBindings) {\n          this.updateInstruction(sourceSpan, Identifiers$1.i18nApply, [index]);\n        }\n      }\n    }\n  }, {\n    key: \"getNamespaceInstruction\",\n    value: function getNamespaceInstruction(namespaceKey) {\n      switch (namespaceKey) {\n        case 'math':\n          return Identifiers$1.namespaceMathML;\n\n        case 'svg':\n          return Identifiers$1.namespaceSVG;\n\n        default:\n          return Identifiers$1.namespaceHTML;\n      }\n    }\n  }, {\n    key: \"addNamespaceInstruction\",\n    value: function addNamespaceInstruction(nsInstruction, element) {\n      this._namespace = nsInstruction;\n      this.creationInstruction(element.startSourceSpan, nsInstruction);\n    }\n    /**\n     * Adds an update instruction for an interpolated property or attribute, such as\n     * `prop=\"{{value}}\"` or `attr.title=\"{{value}}\"`\n     */\n\n  }, {\n    key: \"interpolatedUpdateInstruction\",\n    value: function interpolatedUpdateInstruction(instruction, elementIndex, attrName, input, value, params) {\n      var _this178 = this;\n\n      this.updateInstructionWithAdvance(elementIndex, input.sourceSpan, instruction, function () {\n        return [literal(attrName)].concat(_toConsumableArray(_this178.getUpdateInstructionArguments(value)), _toConsumableArray(params));\n      });\n    }\n  }, {\n    key: \"visitContent\",\n    value: function visitContent(ngContent) {\n      var slot = this.allocateDataSlot();\n      var projectionSlotIdx = this._ngContentSelectorsOffset + this._ngContentReservedSlots.length;\n      var parameters = [literal(slot)];\n\n      this._ngContentReservedSlots.push(ngContent.selector);\n\n      var nonContentSelectAttributes = ngContent.attributes.filter(function (attr) {\n        return attr.name.toLowerCase() !== NG_CONTENT_SELECT_ATTR$1;\n      });\n      var attributes = this.getAttributeExpressions(ngContent.name, nonContentSelectAttributes, [], []);\n\n      if (attributes.length > 0) {\n        parameters.push(literal(projectionSlotIdx), literalArr(attributes));\n      } else if (projectionSlotIdx !== 0) {\n        parameters.push(literal(projectionSlotIdx));\n      }\n\n      this.creationInstruction(ngContent.sourceSpan, Identifiers$1.projection, parameters);\n\n      if (this.i18n) {\n        this.i18n.appendProjection(ngContent.i18n, slot);\n      }\n    }\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(element) {\n      var _this179 = this;\n\n      var _a, _b;\n\n      var elementIndex = this.allocateDataSlot();\n      var stylingBuilder = new StylingBuilder(null);\n      var isNonBindableMode = false;\n      var isI18nRootElement = isI18nRootNode(element.i18n) && !isSingleI18nIcu(element.i18n);\n      var outputAttrs = [];\n\n      var _splitNsName = splitNsName(element.name),\n          _splitNsName2 = _slicedToArray(_splitNsName, 2),\n          namespaceKey = _splitNsName2[0],\n          elementName = _splitNsName2[1];\n\n      var isNgContainer$1 = isNgContainer(element.name); // Handle styling, i18n, ngNonBindable attributes\n\n      var _iterator15 = _createForOfIteratorHelper(element.attributes),\n          _step15;\n\n      try {\n        for (_iterator15.s(); !(_step15 = _iterator15.n()).done;) {\n          var attr = _step15.value;\n          var name = attr.name,\n              value = attr.value;\n\n          if (name === NON_BINDABLE_ATTR) {\n            isNonBindableMode = true;\n          } else if (name === 'style') {\n            stylingBuilder.registerStyleAttr(value);\n          } else if (name === 'class') {\n            stylingBuilder.registerClassAttr(value);\n          } else {\n            outputAttrs.push(attr);\n          }\n        } // Match directives on non i18n attributes\n\n      } catch (err) {\n        _iterator15.e(err);\n      } finally {\n        _iterator15.f();\n      }\n\n      this.matchDirectives(element.name, element); // Regular element or ng-container creation mode\n\n      var parameters = [literal(elementIndex)];\n\n      if (!isNgContainer$1) {\n        parameters.push(literal(elementName));\n      } // Add the attributes\n\n\n      var allOtherInputs = [];\n      var boundI18nAttrs = [];\n      element.inputs.forEach(function (input) {\n        var stylingInputWasSet = stylingBuilder.registerBoundInput(input);\n\n        if (!stylingInputWasSet) {\n          if (input.type === 0\n          /* Property */\n          && input.i18n) {\n            boundI18nAttrs.push(input);\n          } else {\n            allOtherInputs.push(input);\n          }\n        }\n      }); // add attributes for directive and projection matching purposes\n\n      var attributes = this.getAttributeExpressions(element.name, outputAttrs, allOtherInputs, element.outputs, stylingBuilder, [], boundI18nAttrs);\n      parameters.push(this.addAttrsToConsts(attributes)); // local refs (ex.: <div #foo #bar=\"baz\">)\n\n      var refs = this.prepareRefsArray(element.references);\n      parameters.push(this.addToConsts(refs));\n      var wasInNamespace = this._namespace;\n      var currentNamespace = this.getNamespaceInstruction(namespaceKey); // If the namespace is changing now, include an instruction to change it\n      // during element creation.\n\n      if (currentNamespace !== wasInNamespace) {\n        this.addNamespaceInstruction(currentNamespace, element);\n      }\n\n      if (this.i18n) {\n        this.i18n.appendElement(element.i18n, elementIndex);\n      } // Note that we do not append text node instructions and ICUs inside i18n section,\n      // so we exclude them while calculating whether current element has children\n\n\n      var hasChildren = !isI18nRootElement && this.i18n ? !hasTextChildrenOnly(element.children) : element.children.length > 0;\n      var createSelfClosingInstruction = !stylingBuilder.hasBindingsWithPipes && element.outputs.length === 0 && boundI18nAttrs.length === 0 && !hasChildren;\n      var createSelfClosingI18nInstruction = !createSelfClosingInstruction && hasTextChildrenOnly(element.children);\n\n      if (createSelfClosingInstruction) {\n        this.creationInstruction(element.sourceSpan, isNgContainer$1 ? Identifiers$1.elementContainer : Identifiers$1.element, trimTrailingNulls(parameters));\n      } else {\n        this.creationInstruction(element.startSourceSpan, isNgContainer$1 ? Identifiers$1.elementContainerStart : Identifiers$1.elementStart, trimTrailingNulls(parameters));\n\n        if (isNonBindableMode) {\n          this.creationInstruction(element.startSourceSpan, Identifiers$1.disableBindings);\n        }\n\n        if (boundI18nAttrs.length > 0) {\n          this.i18nAttributesInstruction(elementIndex, boundI18nAttrs, (_a = element.startSourceSpan) !== null && _a !== void 0 ? _a : element.sourceSpan);\n        } // Generate Listeners (outputs)\n\n\n        if (element.outputs.length > 0) {\n          var listeners = element.outputs.map(function (outputAst) {\n            return {\n              sourceSpan: outputAst.sourceSpan,\n              params: _this179.prepareListenerParameter(element.name, outputAst, elementIndex)\n            };\n          });\n          this.creationInstructionChain(Identifiers$1.listener, listeners);\n        } // Note: it's important to keep i18n/i18nStart instructions after i18nAttributes and\n        // listeners, to make sure i18nAttributes instruction targets current element at runtime.\n\n\n        if (isI18nRootElement) {\n          this.i18nStart(element.startSourceSpan, element.i18n, createSelfClosingI18nInstruction);\n        }\n      } // the code here will collect all update-level styling instructions and add them to the\n      // update block of the template function AOT code. Instructions like `styleProp`,\n      // `styleMap`, `classMap`, `classProp`\n      // are all generated and assigned in the code below.\n\n\n      var stylingInstructions = stylingBuilder.buildUpdateLevelInstructions(this._valueConverter);\n      var limit = stylingInstructions.length - 1;\n\n      for (var i = 0; i <= limit; i++) {\n        var _instruction = stylingInstructions[i];\n        this._bindingSlots += this.processStylingUpdateInstruction(elementIndex, _instruction);\n      } // the reason why `undefined` is used is because the renderer understands this as a\n      // special value to symbolize that there is no RHS to this binding\n      // TODO (matsko): revisit this once FW-959 is approached\n\n\n      var emptyValueBindInstruction = literal(undefined);\n      var propertyBindings = [];\n      var attributeBindings = []; // Generate element input bindings\n\n      allOtherInputs.forEach(function (input) {\n        var inputType = input.type;\n\n        if (inputType === 4\n        /* Animation */\n        ) {\n          var _value2 = input.value.visit(_this179._valueConverter); // animation bindings can be presented in the following formats:\n          // 1. [@binding]=\"fooExp\"\n          // 2. [@binding]=\"{value:fooExp, params:{...}}\"\n          // 3. [@binding]\n          // 4. @binding\n          // All formats will be valid for when a synthetic binding is created.\n          // The reasoning for this is because the renderer should get each\n          // synthetic binding value in the order of the array that they are\n          // defined in...\n\n\n          var hasValue = _value2 instanceof LiteralPrimitive ? !!_value2.value : true;\n\n          _this179.allocateBindingSlots(_value2);\n\n          propertyBindings.push({\n            name: prepareSyntheticPropertyName(input.name),\n            sourceSpan: input.sourceSpan,\n            value: function value() {\n              return hasValue ? _this179.convertPropertyBinding(_value2) : emptyValueBindInstruction;\n            }\n          });\n        } else {\n          // we must skip attributes with associated i18n context, since these attributes are handled\n          // separately and corresponding `i18nExp` and `i18nApply` instructions will be generated\n          if (input.i18n) return;\n\n          var _value3 = input.value.visit(_this179._valueConverter);\n\n          if (_value3 !== undefined) {\n            var params = [];\n\n            var _splitNsName3 = splitNsName(input.name),\n                _splitNsName4 = _slicedToArray(_splitNsName3, 2),\n                attrNamespace = _splitNsName4[0],\n                attrName = _splitNsName4[1];\n\n            var isAttributeBinding = inputType === 1\n            /* Attribute */\n            ;\n            var sanitizationRef = resolveSanitizationFn(input.securityContext, isAttributeBinding);\n            if (sanitizationRef) params.push(sanitizationRef);\n\n            if (attrNamespace) {\n              var namespaceLiteral = literal(attrNamespace);\n\n              if (sanitizationRef) {\n                params.push(namespaceLiteral);\n              } else {\n                // If there wasn't a sanitization ref, we need to add\n                // an extra param so that we can pass in the namespace.\n                params.push(literal(null), namespaceLiteral);\n              }\n            }\n\n            _this179.allocateBindingSlots(_value3);\n\n            if (inputType === 0\n            /* Property */\n            ) {\n              if (_value3 instanceof Interpolation) {\n                // prop=\"{{value}}\" and friends\n                _this179.interpolatedUpdateInstruction(getPropertyInterpolationExpression(_value3), elementIndex, attrName, input, _value3, params);\n              } else {\n                // [prop]=\"value\"\n                // Collect all the properties so that we can chain into a single function at the end.\n                propertyBindings.push({\n                  name: attrName,\n                  sourceSpan: input.sourceSpan,\n                  value: function value() {\n                    return _this179.convertPropertyBinding(_value3);\n                  },\n                  params: params\n                });\n              }\n            } else if (inputType === 1\n            /* Attribute */\n            ) {\n              if (_value3 instanceof Interpolation && getInterpolationArgsLength(_value3) > 1) {\n                // attr.name=\"text{{value}}\" and friends\n                _this179.interpolatedUpdateInstruction(getAttributeInterpolationExpression(_value3), elementIndex, attrName, input, _value3, params);\n              } else {\n                var boundValue = _value3 instanceof Interpolation ? _value3.expressions[0] : _value3; // [attr.name]=\"value\" or attr.name=\"{{value}}\"\n                // Collect the attribute bindings so that they can be chained at the end.\n\n                attributeBindings.push({\n                  name: attrName,\n                  sourceSpan: input.sourceSpan,\n                  value: function value() {\n                    return _this179.convertPropertyBinding(boundValue);\n                  },\n                  params: params\n                });\n              }\n            } else {\n              // class prop\n              _this179.updateInstructionWithAdvance(elementIndex, input.sourceSpan, Identifiers$1.classProp, function () {\n                return [literal(elementIndex), literal(attrName), _this179.convertPropertyBinding(_value3)].concat(params);\n              });\n            }\n          }\n        }\n      });\n\n      if (propertyBindings.length > 0) {\n        this.updateInstructionChainWithAdvance(elementIndex, Identifiers$1.property, propertyBindings);\n      }\n\n      if (attributeBindings.length > 0) {\n        this.updateInstructionChainWithAdvance(elementIndex, Identifiers$1.attribute, attributeBindings);\n      } // Traverse element child nodes\n\n\n      visitAll(this, element.children);\n\n      if (!isI18nRootElement && this.i18n) {\n        this.i18n.appendElement(element.i18n, elementIndex, true);\n      }\n\n      if (!createSelfClosingInstruction) {\n        // Finish element construction mode.\n        var span = (_b = element.endSourceSpan) !== null && _b !== void 0 ? _b : element.sourceSpan;\n\n        if (isI18nRootElement) {\n          this.i18nEnd(span, createSelfClosingI18nInstruction);\n        }\n\n        if (isNonBindableMode) {\n          this.creationInstruction(span, Identifiers$1.enableBindings);\n        }\n\n        this.creationInstruction(span, isNgContainer$1 ? Identifiers$1.elementContainerEnd : Identifiers$1.elementEnd);\n      }\n    }\n  }, {\n    key: \"visitTemplate\",\n    value: function visitTemplate(template) {\n      var _this180 = this;\n\n      var _a;\n\n      var NG_TEMPLATE_TAG_NAME = 'ng-template';\n      var templateIndex = this.allocateDataSlot();\n\n      if (this.i18n) {\n        this.i18n.appendTemplate(template.i18n, templateIndex);\n      }\n\n      var tagName = sanitizeIdentifier(template.tagName || '');\n      var contextName = \"\".concat(this.contextName).concat(tagName ? '_' + tagName : '', \"_\").concat(templateIndex);\n      var templateName = \"\".concat(contextName, \"_Template\");\n      var parameters = [literal(templateIndex), variable(templateName), // We don't care about the tag's namespace here, because we infer\n      // it based on the parent nodes inside the template instruction.\n      literal(template.tagName ? splitNsName(template.tagName)[1] : template.tagName)]; // find directives matching on a given <ng-template> node\n\n      this.matchDirectives(NG_TEMPLATE_TAG_NAME, template); // prepare attributes parameter (including attributes used for directive matching)\n\n      var attrsExprs = this.getAttributeExpressions(NG_TEMPLATE_TAG_NAME, template.attributes, template.inputs, template.outputs, undefined\n      /* styles */\n      , template.templateAttrs);\n      parameters.push(this.addAttrsToConsts(attrsExprs)); // local refs (ex.: <ng-template #foo>)\n\n      if (template.references && template.references.length) {\n        var refs = this.prepareRefsArray(template.references);\n        parameters.push(this.addToConsts(refs));\n        parameters.push(importExpr(Identifiers$1.templateRefExtractor));\n      } // Create the template function\n\n\n      var templateVisitor = new TemplateDefinitionBuilder(this.constantPool, this._bindingScope, this.level + 1, contextName, this.i18n, templateIndex, templateName, this.directiveMatcher, this.directives, this.pipeTypeByName, this.pipes, this._namespace, this.fileBasedI18nSuffix, this.i18nUseExternalIds, this._constants); // Nested templates must not be visited until after their parent templates have completed\n      // processing, so they are queued here until after the initial pass. Otherwise, we wouldn't\n      // be able to support bindings in nested templates to local refs that occur after the\n      // template definition. e.g. <div *ngIf=\"showing\">{{ foo }}</div>  <div #foo></div>\n\n      this._nestedTemplateFns.push(function () {\n        var templateFunctionExpr = templateVisitor.buildTemplateFunction(template.children, template.variables, _this180._ngContentReservedSlots.length + _this180._ngContentSelectorsOffset, template.i18n);\n\n        _this180.constantPool.statements.push(templateFunctionExpr.toDeclStmt(templateName));\n\n        if (templateVisitor._ngContentReservedSlots.length) {\n          var _this180$_ngContentRe;\n\n          (_this180$_ngContentRe = _this180._ngContentReservedSlots).push.apply(_this180$_ngContentRe, _toConsumableArray(templateVisitor._ngContentReservedSlots));\n        }\n      }); // e.g. template(1, MyComp_Template_1)\n\n\n      this.creationInstruction(template.sourceSpan, Identifiers$1.templateCreate, function () {\n        parameters.splice(2, 0, literal(templateVisitor.getConstCount()), literal(templateVisitor.getVarCount()));\n        return trimTrailingNulls(parameters);\n      }); // handle property bindings e.g. ɵɵproperty('ngForOf', ctx.items), et al;\n\n      this.templatePropertyBindings(templateIndex, template.templateAttrs); // Only add normal input/output binding instructions on explicit <ng-template> elements.\n\n      if (template.tagName === NG_TEMPLATE_TAG_NAME) {\n        var _partitionArray = partitionArray(template.inputs, hasI18nMeta),\n            _partitionArray2 = _slicedToArray(_partitionArray, 2),\n            i18nInputs = _partitionArray2[0],\n            inputs = _partitionArray2[1]; // Add i18n attributes that may act as inputs to directives. If such attributes are present,\n        // generate `i18nAttributes` instruction. Note: we generate it only for explicit <ng-template>\n        // elements, in case of inline templates, corresponding instructions will be generated in the\n        // nested template function.\n\n\n        if (i18nInputs.length > 0) {\n          this.i18nAttributesInstruction(templateIndex, i18nInputs, (_a = template.startSourceSpan) !== null && _a !== void 0 ? _a : template.sourceSpan);\n        } // Add the input bindings\n\n\n        if (inputs.length > 0) {\n          this.templatePropertyBindings(templateIndex, inputs);\n        } // Generate listeners for directive output\n\n\n        if (template.outputs.length > 0) {\n          var listeners = template.outputs.map(function (outputAst) {\n            return {\n              sourceSpan: outputAst.sourceSpan,\n              params: _this180.prepareListenerParameter('ng_template', outputAst, templateIndex)\n            };\n          });\n          this.creationInstructionChain(Identifiers$1.listener, listeners);\n        }\n      }\n    }\n  }, {\n    key: \"visitBoundText\",\n    value: function visitBoundText(text) {\n      var _this181 = this;\n\n      if (this.i18n) {\n        var _value4 = text.value.visit(this._valueConverter);\n\n        this.allocateBindingSlots(_value4);\n\n        if (_value4 instanceof Interpolation) {\n          this.i18n.appendBoundText(text.i18n);\n          this.i18nAppendBindings(_value4.expressions);\n        }\n\n        return;\n      }\n\n      var nodeIndex = this.allocateDataSlot();\n      this.creationInstruction(text.sourceSpan, Identifiers$1.text, [literal(nodeIndex)]);\n      var value = text.value.visit(this._valueConverter);\n      this.allocateBindingSlots(value);\n\n      if (value instanceof Interpolation) {\n        this.updateInstructionWithAdvance(nodeIndex, text.sourceSpan, getTextInterpolationExpression(value), function () {\n          return _this181.getUpdateInstructionArguments(value);\n        });\n      } else {\n        error('Text nodes should be interpolated and never bound directly.');\n      }\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text) {\n      // when a text element is located within a translatable\n      // block, we exclude this text element from instructions set,\n      // since it will be captured in i18n content and processed at runtime\n      if (!this.i18n) {\n        this.creationInstruction(text.sourceSpan, Identifiers$1.text, [literal(this.allocateDataSlot()), literal(text.value)]);\n      }\n    }\n  }, {\n    key: \"visitIcu\",\n    value: function visitIcu(icu) {\n      var initWasInvoked = false; // if an ICU was created outside of i18n block, we still treat\n      // it as a translatable entity and invoke i18nStart and i18nEnd\n      // to generate i18n context and the necessary instructions\n\n      if (!this.i18n) {\n        initWasInvoked = true;\n        this.i18nStart(null, icu.i18n, true);\n      }\n\n      var i18n = this.i18n;\n      var vars = this.i18nBindProps(icu.vars);\n      var placeholders = this.i18nBindProps(icu.placeholders); // output ICU directly and keep ICU reference in context\n\n      var message = icu.i18n; // we always need post-processing function for ICUs, to make sure that:\n      // - all placeholders in a form of {PLACEHOLDER} are replaced with actual values (note:\n      // `goog.getMsg` does not process ICUs and uses the `{PLACEHOLDER}` format for placeholders\n      // inside ICUs)\n      // - all ICU vars (such as `VAR_SELECT` or `VAR_PLURAL`) are replaced with correct values\n\n      var transformFn = function transformFn(raw) {\n        var params = Object.assign(Object.assign({}, vars), placeholders);\n        var formatted = i18nFormatPlaceholderNames(params,\n        /* useCamelCase */\n        false);\n        return instruction(null, Identifiers$1.i18nPostprocess, [raw, mapLiteral(formatted, true)]);\n      }; // in case the whole i18n message is a single ICU - we do not need to\n      // create a separate top-level translation, we can use the root ref instead\n      // and make this ICU a top-level translation\n      // note: ICU placeholders are replaced with actual values in `i18nPostprocess` function\n      // separately, so we do not pass placeholders into `i18nTranslate` function.\n\n\n      if (isSingleI18nIcu(i18n.meta)) {\n        this.i18nTranslate(message,\n        /* placeholders */\n        {}, i18n.ref, transformFn);\n      } else {\n        // output ICU directly and keep ICU reference in context\n        var ref = this.i18nTranslate(message,\n        /* placeholders */\n        {},\n        /* ref */\n        undefined, transformFn);\n        i18n.appendIcu(icuFromI18nMessage(message).name, ref);\n      }\n\n      if (initWasInvoked) {\n        this.i18nEnd(null, true);\n      }\n\n      return null;\n    }\n  }, {\n    key: \"allocateDataSlot\",\n    value: function allocateDataSlot() {\n      return this._dataIndex++;\n    }\n  }, {\n    key: \"getConstCount\",\n    value: function getConstCount() {\n      return this._dataIndex;\n    }\n  }, {\n    key: \"getVarCount\",\n    value: function getVarCount() {\n      return this._pureFunctionSlots;\n    }\n  }, {\n    key: \"getConsts\",\n    value: function getConsts() {\n      return this._constants;\n    }\n  }, {\n    key: \"getNgContentSelectors\",\n    value: function getNgContentSelectors() {\n      return this._ngContentReservedSlots.length ? this.constantPool.getConstLiteral(asLiteral(this._ngContentReservedSlots), true) : null;\n    }\n  }, {\n    key: \"bindingContext\",\n    value: function bindingContext() {\n      return \"\".concat(this._bindingContext++);\n    }\n  }, {\n    key: \"templatePropertyBindings\",\n    value: function templatePropertyBindings(templateIndex, attrs) {\n      var _this182 = this;\n\n      var propertyBindings = [];\n      attrs.forEach(function (input) {\n        if (input instanceof BoundAttribute) {\n          var _value5 = input.value.visit(_this182._valueConverter);\n\n          if (_value5 !== undefined) {\n            _this182.allocateBindingSlots(_value5);\n\n            if (_value5 instanceof Interpolation) {\n              // Params typically contain attribute namespace and value sanitizer, which is applicable\n              // for regular HTML elements, but not applicable for <ng-template> (since props act as\n              // inputs to directives), so keep params array empty.\n              var params = []; // prop=\"{{value}}\" case\n\n              _this182.interpolatedUpdateInstruction(getPropertyInterpolationExpression(_value5), templateIndex, input.name, input, _value5, params);\n            } else {\n              // [prop]=\"value\" case\n              propertyBindings.push({\n                name: input.name,\n                sourceSpan: input.sourceSpan,\n                value: function value() {\n                  return _this182.convertPropertyBinding(_value5);\n                }\n              });\n            }\n          }\n        }\n      });\n\n      if (propertyBindings.length > 0) {\n        this.updateInstructionChainWithAdvance(templateIndex, Identifiers$1.property, propertyBindings);\n      }\n    } // Bindings must only be resolved after all local refs have been visited, so all\n    // instructions are queued in callbacks that execute once the initial pass has completed.\n    // Otherwise, we wouldn't be able to support local refs that are defined after their\n    // bindings. e.g. {{ foo }} <div #foo></div>\n\n  }, {\n    key: \"instructionFn\",\n    value: function instructionFn(fns, span, reference, paramsOrFn) {\n      var prepend = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : false;\n      fns[prepend ? 'unshift' : 'push'](function () {\n        var params = Array.isArray(paramsOrFn) ? paramsOrFn : paramsOrFn();\n        return instruction(span, reference, params).toStmt();\n      });\n    }\n  }, {\n    key: \"processStylingUpdateInstruction\",\n    value: function processStylingUpdateInstruction(elementIndex, instruction) {\n      var _this183 = this;\n\n      var allocateBindingSlots = 0;\n\n      if (instruction) {\n        var calls = [];\n        instruction.calls.forEach(function (call) {\n          allocateBindingSlots += call.allocateBindingSlots;\n          calls.push({\n            sourceSpan: call.sourceSpan,\n            value: function value() {\n              return call.params(function (value) {\n                return call.supportsInterpolation && value instanceof Interpolation ? _this183.getUpdateInstructionArguments(value) : _this183.convertPropertyBinding(value);\n              });\n            }\n          });\n        });\n        this.updateInstructionChainWithAdvance(elementIndex, instruction.reference, calls);\n      }\n\n      return allocateBindingSlots;\n    }\n  }, {\n    key: \"creationInstruction\",\n    value: function creationInstruction(span, reference, paramsOrFn, prepend) {\n      this.instructionFn(this._creationCodeFns, span, reference, paramsOrFn || [], prepend);\n    }\n  }, {\n    key: \"creationInstructionChain\",\n    value: function creationInstructionChain(reference, calls) {\n      var span = calls.length ? calls[0].sourceSpan : null;\n\n      this._creationCodeFns.push(function () {\n        return chainedInstruction(reference, calls.map(function (call) {\n          return call.params();\n        }), span).toStmt();\n      });\n    }\n  }, {\n    key: \"updateInstructionWithAdvance\",\n    value: function updateInstructionWithAdvance(nodeIndex, span, reference, paramsOrFn) {\n      this.addAdvanceInstructionIfNecessary(nodeIndex, span);\n      this.updateInstruction(span, reference, paramsOrFn);\n    }\n  }, {\n    key: \"updateInstruction\",\n    value: function updateInstruction(span, reference, paramsOrFn) {\n      this.instructionFn(this._updateCodeFns, span, reference, paramsOrFn || []);\n    }\n  }, {\n    key: \"updateInstructionChain\",\n    value: function updateInstructionChain(reference, bindings) {\n      var span = bindings.length ? bindings[0].sourceSpan : null;\n\n      this._updateCodeFns.push(function () {\n        var calls = bindings.map(function (property) {\n          var value = property.value();\n          var fnParams = Array.isArray(value) ? value : [value];\n\n          if (property.params) {\n            fnParams.push.apply(fnParams, _toConsumableArray(property.params));\n          }\n\n          if (property.name) {\n            // We want the property name to always be the first function parameter.\n            fnParams.unshift(literal(property.name));\n          }\n\n          return fnParams;\n        });\n        return chainedInstruction(reference, calls, span).toStmt();\n      });\n    }\n  }, {\n    key: \"updateInstructionChainWithAdvance\",\n    value: function updateInstructionChainWithAdvance(nodeIndex, reference, bindings) {\n      this.addAdvanceInstructionIfNecessary(nodeIndex, bindings.length ? bindings[0].sourceSpan : null);\n      this.updateInstructionChain(reference, bindings);\n    }\n  }, {\n    key: \"addAdvanceInstructionIfNecessary\",\n    value: function addAdvanceInstructionIfNecessary(nodeIndex, span) {\n      if (nodeIndex !== this._currentIndex) {\n        var delta = nodeIndex - this._currentIndex;\n\n        if (delta < 1) {\n          throw new Error('advance instruction can only go forwards');\n        }\n\n        this.instructionFn(this._updateCodeFns, span, Identifiers$1.advance, [literal(delta)]);\n        this._currentIndex = nodeIndex;\n      }\n    }\n  }, {\n    key: \"allocatePureFunctionSlots\",\n    value: function allocatePureFunctionSlots(numSlots) {\n      var originalSlots = this._pureFunctionSlots;\n      this._pureFunctionSlots += numSlots;\n      return originalSlots;\n    }\n  }, {\n    key: \"allocateBindingSlots\",\n    value: function allocateBindingSlots(value) {\n      this._bindingSlots += value instanceof Interpolation ? value.expressions.length : 1;\n    }\n    /**\n     * Gets an expression that refers to the implicit receiver. The implicit\n     * receiver is always the root level context.\n     */\n\n  }, {\n    key: \"getImplicitReceiverExpr\",\n    value: function getImplicitReceiverExpr() {\n      if (this._implicitReceiverExpr) {\n        return this._implicitReceiverExpr;\n      }\n\n      return this._implicitReceiverExpr = this.level === 0 ? variable(CONTEXT_NAME) : this._bindingScope.getOrCreateSharedContextVar(0);\n    }\n  }, {\n    key: \"convertPropertyBinding\",\n    value: function convertPropertyBinding(value) {\n      var _this$_tempVariables;\n\n      var convertedPropertyBinding = _convertPropertyBinding(this, this.getImplicitReceiverExpr(), value, this.bindingContext(), BindingForm.Expression, function () {\n        return error('Unexpected interpolation');\n      });\n\n      var valExpr = convertedPropertyBinding.currValExpr;\n\n      (_this$_tempVariables = this._tempVariables).push.apply(_this$_tempVariables, _toConsumableArray(convertedPropertyBinding.stmts));\n\n      return valExpr;\n    }\n    /**\n     * Gets a list of argument expressions to pass to an update instruction expression. Also updates\n     * the temp variables state with temp variables that were identified as needing to be created\n     * while visiting the arguments.\n     * @param value The original expression we will be resolving an arguments list from.\n     */\n\n  }, {\n    key: \"getUpdateInstructionArguments\",\n    value: function getUpdateInstructionArguments(value) {\n      var _this$_tempVariables2;\n\n      var _convertUpdateArgumen = convertUpdateArguments(this, this.getImplicitReceiverExpr(), value, this.bindingContext()),\n          args = _convertUpdateArgumen.args,\n          stmts = _convertUpdateArgumen.stmts;\n\n      (_this$_tempVariables2 = this._tempVariables).push.apply(_this$_tempVariables2, _toConsumableArray(stmts));\n\n      return args;\n    }\n  }, {\n    key: \"matchDirectives\",\n    value: function matchDirectives(elementName, elOrTpl) {\n      var _this184 = this;\n\n      if (this.directiveMatcher) {\n        var selector = createCssSelector(elementName, getAttrsForDirectiveMatching(elOrTpl));\n        this.directiveMatcher.match(selector, function (cssSelector, staticType) {\n          _this184.directives.add(staticType);\n        });\n      }\n    }\n    /**\n     * Prepares all attribute expression values for the `TAttributes` array.\n     *\n     * The purpose of this function is to properly construct an attributes array that\n     * is passed into the `elementStart` (or just `element`) functions. Because there\n     * are many different types of attributes, the array needs to be constructed in a\n     * special way so that `elementStart` can properly evaluate them.\n     *\n     * The format looks like this:\n     *\n     * ```\n     * attrs = [prop, value, prop2, value2,\n     *   PROJECT_AS, selector,\n     *   CLASSES, class1, class2,\n     *   STYLES, style1, value1, style2, value2,\n     *   BINDINGS, name1, name2, name3,\n     *   TEMPLATE, name4, name5, name6,\n     *   I18N, name7, name8, ...]\n     * ```\n     *\n     * Note that this function will fully ignore all synthetic (@foo) attribute values\n     * because those values are intended to always be generated as property instructions.\n     */\n\n  }, {\n    key: \"getAttributeExpressions\",\n    value: function getAttributeExpressions(elementName, renderAttributes, inputs, outputs, styles) {\n      var templateAttrs = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : [];\n      var boundI18nAttrs = arguments.length > 6 && arguments[6] !== undefined ? arguments[6] : [];\n      var alreadySeen = new Set();\n      var attrExprs = [];\n      var ngProjectAsAttr;\n\n      var _iterator16 = _createForOfIteratorHelper(renderAttributes),\n          _step16;\n\n      try {\n        for (_iterator16.s(); !(_step16 = _iterator16.n()).done;) {\n          var attr = _step16.value;\n\n          if (attr.name === NG_PROJECT_AS_ATTR_NAME) {\n            ngProjectAsAttr = attr;\n          } // Note that static i18n attributes aren't in the i18n array,\n          // because they're treated in the same way as regular attributes.\n\n\n          if (attr.i18n) {\n            attrExprs.push(literal(attr.name), this.i18nTranslate(attr.i18n));\n          } else {\n            attrExprs.push.apply(attrExprs, _toConsumableArray(getAttributeNameLiterals(attr.name)).concat([trustedConstAttribute(elementName, attr)]));\n          }\n        } // Keep ngProjectAs next to the other name, value pairs so we can verify that we match\n        // ngProjectAs marker in the attribute name slot.\n\n      } catch (err) {\n        _iterator16.e(err);\n      } finally {\n        _iterator16.f();\n      }\n\n      if (ngProjectAsAttr) {\n        attrExprs.push.apply(attrExprs, _toConsumableArray(getNgProjectAsLiteral(ngProjectAsAttr)));\n      }\n\n      function addAttrExpr(key, value) {\n        if (typeof key === 'string') {\n          if (!alreadySeen.has(key)) {\n            attrExprs.push.apply(attrExprs, _toConsumableArray(getAttributeNameLiterals(key)));\n            value !== undefined && attrExprs.push(value);\n            alreadySeen.add(key);\n          }\n        } else {\n          attrExprs.push(literal(key));\n        }\n      } // it's important that this occurs before BINDINGS and TEMPLATE because once `elementStart`\n      // comes across the BINDINGS or TEMPLATE markers then it will continue reading each value as\n      // as single property value cell by cell.\n\n\n      if (styles) {\n        styles.populateInitialStylingAttrs(attrExprs);\n      }\n\n      if (inputs.length || outputs.length) {\n        var attrsLengthBeforeInputs = attrExprs.length;\n\n        for (var i = 0; i < inputs.length; i++) {\n          var input = inputs[i]; // We don't want the animation and attribute bindings in the\n          // attributes array since they aren't used for directive matching.\n\n          if (input.type !== 4\n          /* Animation */\n          && input.type !== 1\n          /* Attribute */\n          ) {\n            addAttrExpr(input.name);\n          }\n        }\n\n        for (var _i7 = 0; _i7 < outputs.length; _i7++) {\n          var output = outputs[_i7];\n\n          if (output.type !== 1\n          /* Animation */\n          ) {\n            addAttrExpr(output.name);\n          }\n        } // this is a cheap way of adding the marker only after all the input/output\n        // values have been filtered (by not including the animation ones) and added\n        // to the expressions. The marker is important because it tells the runtime\n        // code that this is where attributes without values start...\n\n\n        if (attrExprs.length !== attrsLengthBeforeInputs) {\n          attrExprs.splice(attrsLengthBeforeInputs, 0, literal(3\n          /* Bindings */\n          ));\n        }\n      }\n\n      if (templateAttrs.length) {\n        attrExprs.push(literal(4\n        /* Template */\n        ));\n        templateAttrs.forEach(function (attr) {\n          return addAttrExpr(attr.name);\n        });\n      }\n\n      if (boundI18nAttrs.length) {\n        attrExprs.push(literal(6\n        /* I18n */\n        ));\n        boundI18nAttrs.forEach(function (attr) {\n          return addAttrExpr(attr.name);\n        });\n      }\n\n      return attrExprs;\n    }\n  }, {\n    key: \"addToConsts\",\n    value: function addToConsts(expression) {\n      if (isNull(expression)) {\n        return TYPED_NULL_EXPR;\n      }\n\n      var consts = this._constants.constExpressions; // Try to reuse a literal that's already in the array, if possible.\n\n      for (var i = 0; i < consts.length; i++) {\n        if (consts[i].isEquivalent(expression)) {\n          return literal(i);\n        }\n      }\n\n      return literal(consts.push(expression) - 1);\n    }\n  }, {\n    key: \"addAttrsToConsts\",\n    value: function addAttrsToConsts(attrs) {\n      return attrs.length > 0 ? this.addToConsts(literalArr(attrs)) : TYPED_NULL_EXPR;\n    }\n  }, {\n    key: \"prepareRefsArray\",\n    value: function prepareRefsArray(references) {\n      var _this185 = this;\n\n      if (!references || references.length === 0) {\n        return TYPED_NULL_EXPR;\n      }\n\n      var refsParam = flatten(references.map(function (reference) {\n        var slot = _this185.allocateDataSlot(); // Generate the update temporary.\n\n\n        var variableName = _this185._bindingScope.freshReferenceName();\n\n        var retrievalLevel = _this185.level;\n        var lhs = variable(variableName);\n\n        _this185._bindingScope.set(retrievalLevel, reference.name, lhs, 0\n        /* DEFAULT */\n        , function (scope, relativeLevel) {\n          // e.g. nextContext(2);\n          var nextContextStmt = relativeLevel > 0 ? [generateNextContextExpr(relativeLevel).toStmt()] : []; // e.g. const $foo$ = reference(1);\n\n          var refExpr = lhs.set(importExpr(Identifiers$1.reference).callFn([literal(slot)]));\n          return nextContextStmt.concat(refExpr.toConstDecl());\n        }, true);\n\n        return [reference.name, reference.value];\n      }));\n      return asLiteral(refsParam);\n    }\n  }, {\n    key: \"prepareListenerParameter\",\n    value: function prepareListenerParameter(tagName, outputAst, index) {\n      var _this186 = this;\n\n      return function () {\n        var eventName = outputAst.name;\n        var bindingFnName = outputAst.type === 1\n        /* Animation */\n        ? // synthetic @listener.foo values are treated the exact same as are standard listeners\n        prepareSyntheticListenerFunctionName(eventName, outputAst.phase) : sanitizeIdentifier(eventName);\n        var handlerName = \"\".concat(_this186.templateName, \"_\").concat(tagName, \"_\").concat(bindingFnName, \"_\").concat(index, \"_listener\");\n\n        var scope = _this186._bindingScope.nestedScope(_this186._bindingScope.bindingLevel, EVENT_BINDING_SCOPE_GLOBALS);\n\n        return prepareEventListenerParameters(outputAst, handlerName, scope);\n      };\n    }\n  }]);\n\n  return TemplateDefinitionBuilder;\n}();\n\nvar ValueConverter = /*#__PURE__*/function (_AstMemoryEfficientTr) {\n  _inherits(ValueConverter, _AstMemoryEfficientTr);\n\n  var _super97 = _createSuper(ValueConverter);\n\n  function ValueConverter(constantPool, allocateSlot, allocatePureFunctionSlots, definePipe) {\n    var _this187;\n\n    _classCallCheck(this, ValueConverter);\n\n    _this187 = _super97.call(this);\n    _this187.constantPool = constantPool;\n    _this187.allocateSlot = allocateSlot;\n    _this187.allocatePureFunctionSlots = allocatePureFunctionSlots;\n    _this187.definePipe = definePipe;\n    _this187._pipeBindExprs = [];\n    return _this187;\n  } // AstMemoryEfficientTransformer\n\n\n  _createClass(ValueConverter, [{\n    key: \"visitPipe\",\n    value: function visitPipe(pipe, context) {\n      // Allocate a slot to create the pipe\n      var slot = this.allocateSlot();\n      var slotPseudoLocal = \"PIPE:\".concat(slot); // Allocate one slot for the result plus one slot per pipe argument\n\n      var pureFunctionSlot = this.allocatePureFunctionSlots(2 + pipe.args.length);\n      var target = new PropertyRead(pipe.span, pipe.sourceSpan, pipe.nameSpan, new ImplicitReceiver(pipe.span, pipe.sourceSpan), slotPseudoLocal);\n\n      var _pipeBindingCallInfo = pipeBindingCallInfo(pipe.args),\n          identifier = _pipeBindingCallInfo.identifier,\n          isVarLength = _pipeBindingCallInfo.isVarLength;\n\n      this.definePipe(pipe.name, slotPseudoLocal, slot, importExpr(identifier));\n      var args = [pipe.exp].concat(_toConsumableArray(pipe.args));\n      var convertedArgs = isVarLength ? this.visitAll([new LiteralArray(pipe.span, pipe.sourceSpan, args)]) : this.visitAll(args);\n      var pipeBindExpr = new FunctionCall(pipe.span, pipe.sourceSpan, target, [new LiteralPrimitive(pipe.span, pipe.sourceSpan, slot), new LiteralPrimitive(pipe.span, pipe.sourceSpan, pureFunctionSlot)].concat(_toConsumableArray(convertedArgs)));\n\n      this._pipeBindExprs.push(pipeBindExpr);\n\n      return pipeBindExpr;\n    }\n  }, {\n    key: \"updatePipeSlotOffsets\",\n    value: function updatePipeSlotOffsets(bindingSlots) {\n      this._pipeBindExprs.forEach(function (pipe) {\n        // update the slot offset arg (index 1) to account for binding slots\n        var slotOffset = pipe.args[1];\n        slotOffset.value += bindingSlots;\n      });\n    }\n  }, {\n    key: \"visitLiteralArray\",\n    value: function visitLiteralArray(array, context) {\n      var _this188 = this;\n\n      return new BuiltinFunctionCall(array.span, array.sourceSpan, this.visitAll(array.expressions), function (values) {\n        // If the literal has calculated (non-literal) elements transform it into\n        // calls to literal factories that compose the literal and will cache intermediate\n        // values.\n        var literal = literalArr(values);\n        return getLiteralFactory(_this188.constantPool, literal, _this188.allocatePureFunctionSlots);\n      });\n    }\n  }, {\n    key: \"visitLiteralMap\",\n    value: function visitLiteralMap(map, context) {\n      var _this189 = this;\n\n      return new BuiltinFunctionCall(map.span, map.sourceSpan, this.visitAll(map.values), function (values) {\n        // If the literal has calculated (non-literal) elements  transform it into\n        // calls to literal factories that compose the literal and will cache intermediate\n        // values.\n        var literal = literalMap(values.map(function (value, index) {\n          return {\n            key: map.keys[index].key,\n            value: value,\n            quoted: map.keys[index].quoted\n          };\n        }));\n        return getLiteralFactory(_this189.constantPool, literal, _this189.allocatePureFunctionSlots);\n      });\n    }\n  }]);\n\n  return ValueConverter;\n}(AstMemoryEfficientTransformer); // Pipes always have at least one parameter, the value they operate on\n\n\nvar pipeBindingIdentifiers = [Identifiers$1.pipeBind1, Identifiers$1.pipeBind2, Identifiers$1.pipeBind3, Identifiers$1.pipeBind4];\n\nfunction pipeBindingCallInfo(args) {\n  var identifier = pipeBindingIdentifiers[args.length];\n  return {\n    identifier: identifier || Identifiers$1.pipeBindV,\n    isVarLength: !identifier\n  };\n}\n\nvar pureFunctionIdentifiers = [Identifiers$1.pureFunction0, Identifiers$1.pureFunction1, Identifiers$1.pureFunction2, Identifiers$1.pureFunction3, Identifiers$1.pureFunction4, Identifiers$1.pureFunction5, Identifiers$1.pureFunction6, Identifiers$1.pureFunction7, Identifiers$1.pureFunction8];\n\nfunction pureFunctionCallInfo(args) {\n  var identifier = pureFunctionIdentifiers[args.length];\n  return {\n    identifier: identifier || Identifiers$1.pureFunctionV,\n    isVarLength: !identifier\n  };\n}\n\nfunction instruction(span, reference, params) {\n  return importExpr(reference, null, span).callFn(params, span);\n} // e.g. x(2);\n\n\nfunction generateNextContextExpr(relativeLevelDiff) {\n  return importExpr(Identifiers$1.nextContext).callFn(relativeLevelDiff > 1 ? [literal(relativeLevelDiff)] : []);\n}\n\nfunction getLiteralFactory(constantPool, literal$1, allocateSlots) {\n  var _constantPool$getLite = constantPool.getLiteralFactory(literal$1),\n      literalFactory = _constantPool$getLite.literalFactory,\n      literalFactoryArguments = _constantPool$getLite.literalFactoryArguments; // Allocate 1 slot for the result plus 1 per argument\n\n\n  var startSlot = allocateSlots(1 + literalFactoryArguments.length);\n\n  var _pureFunctionCallInfo = pureFunctionCallInfo(literalFactoryArguments),\n      identifier = _pureFunctionCallInfo.identifier,\n      isVarLength = _pureFunctionCallInfo.isVarLength; // Literal factories are pure functions that only need to be re-invoked when the parameters\n  // change.\n\n\n  var args = [literal(startSlot), literalFactory];\n\n  if (isVarLength) {\n    args.push(literalArr(literalFactoryArguments));\n  } else {\n    args.push.apply(args, _toConsumableArray(literalFactoryArguments));\n  }\n\n  return importExpr(identifier).callFn(args);\n}\n/**\n * Gets an array of literals that can be added to an expression\n * to represent the name and namespace of an attribute. E.g.\n * `:xlink:href` turns into `[AttributeMarker.NamespaceURI, 'xlink', 'href']`.\n *\n * @param name Name of the attribute, including the namespace.\n */\n\n\nfunction getAttributeNameLiterals(name) {\n  var _splitNsName5 = splitNsName(name),\n      _splitNsName6 = _slicedToArray(_splitNsName5, 2),\n      attributeNamespace = _splitNsName6[0],\n      attributeName = _splitNsName6[1];\n\n  var nameLiteral = literal(attributeName);\n\n  if (attributeNamespace) {\n    return [literal(0\n    /* NamespaceURI */\n    ), literal(attributeNamespace), nameLiteral];\n  }\n\n  return [nameLiteral];\n}\n/** The prefix used to get a shared context in BindingScope's map. */\n\n\nvar SHARED_CONTEXT_KEY = '$$shared_ctx$$';\n\nvar BindingScope = /*#__PURE__*/function () {\n  function BindingScope() {\n    var bindingLevel = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;\n    var parent = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n    var globals = arguments.length > 2 ? arguments[2] : undefined;\n\n    _classCallCheck(this, BindingScope);\n\n    this.bindingLevel = bindingLevel;\n    this.parent = parent;\n    this.globals = globals;\n    /** Keeps a map from local variables to their BindingData. */\n\n    this.map = new Map();\n    this.referenceNameIndex = 0;\n    this.restoreViewVariable = null;\n\n    if (globals !== undefined) {\n      var _iterator17 = _createForOfIteratorHelper(globals),\n          _step17;\n\n      try {\n        for (_iterator17.s(); !(_step17 = _iterator17.n()).done;) {\n          var name = _step17.value;\n          this.set(0, name, variable(name));\n        }\n      } catch (err) {\n        _iterator17.e(err);\n      } finally {\n        _iterator17.f();\n      }\n    }\n  }\n\n  _createClass(BindingScope, [{\n    key: \"get\",\n    value: function get(name) {\n      var current = this;\n\n      while (current) {\n        var value = current.map.get(name);\n\n        if (value != null) {\n          if (current !== this) {\n            // make a local copy and reset the `declare` state\n            value = {\n              retrievalLevel: value.retrievalLevel,\n              lhs: value.lhs,\n              declareLocalCallback: value.declareLocalCallback,\n              declare: false,\n              priority: value.priority,\n              localRef: value.localRef\n            }; // Cache the value locally.\n\n            this.map.set(name, value); // Possibly generate a shared context var\n\n            this.maybeGenerateSharedContextVar(value);\n            this.maybeRestoreView(value.retrievalLevel, value.localRef);\n          }\n\n          if (value.declareLocalCallback && !value.declare) {\n            value.declare = true;\n          }\n\n          return value.lhs;\n        }\n\n        current = current.parent;\n      } // If we get to this point, we are looking for a property on the top level component\n      // - If level === 0, we are on the top and don't need to re-declare `ctx`.\n      // - If level > 0, we are in an embedded view. We need to retrieve the name of the\n      // local var we used to store the component context, e.g. const $comp$ = x();\n\n\n      return this.bindingLevel === 0 ? null : this.getComponentProperty(name);\n    }\n    /**\n     * Create a local variable for later reference.\n     *\n     * @param retrievalLevel The level from which this value can be retrieved\n     * @param name Name of the variable.\n     * @param lhs AST representing the left hand side of the `let lhs = rhs;`.\n     * @param priority The sorting priority of this var\n     * @param declareLocalCallback The callback to invoke when declaring this local var\n     * @param localRef Whether or not this is a local ref\n     */\n\n  }, {\n    key: \"set\",\n    value: function set(retrievalLevel, name, lhs) {\n      var priority = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 0;\n      var declareLocalCallback = arguments.length > 4 ? arguments[4] : undefined;\n      var localRef = arguments.length > 5 ? arguments[5] : undefined;\n\n      if (this.map.has(name)) {\n        if (localRef) {\n          // Do not throw an error if it's a local ref and do not update existing value,\n          // so the first defined ref is always returned.\n          return this;\n        }\n\n        error(\"The name \".concat(name, \" is already defined in scope to be \").concat(this.map.get(name)));\n      }\n\n      this.map.set(name, {\n        retrievalLevel: retrievalLevel,\n        lhs: lhs,\n        declare: false,\n        declareLocalCallback: declareLocalCallback,\n        priority: priority,\n        localRef: localRef || false\n      });\n      return this;\n    } // Implemented as part of LocalResolver.\n\n  }, {\n    key: \"getLocal\",\n    value: function getLocal(name) {\n      return this.get(name);\n    } // Implemented as part of LocalResolver.\n\n  }, {\n    key: \"notifyImplicitReceiverUse\",\n    value: function notifyImplicitReceiverUse() {\n      if (this.bindingLevel !== 0) {\n        // Since the implicit receiver is accessed in an embedded view, we need to\n        // ensure that we declare a shared context variable for the current template\n        // in the update variables.\n        this.map.get(SHARED_CONTEXT_KEY + 0).declare = true;\n      }\n    }\n  }, {\n    key: \"nestedScope\",\n    value: function nestedScope(level, globals) {\n      var newScope = new BindingScope(level, this, globals);\n      if (level > 0) newScope.generateSharedContextVar(0);\n      return newScope;\n    }\n    /**\n     * Gets or creates a shared context variable and returns its expression. Note that\n     * this does not mean that the shared variable will be declared. Variables in the\n     * binding scope will be only declared if they are used.\n     */\n\n  }, {\n    key: \"getOrCreateSharedContextVar\",\n    value: function getOrCreateSharedContextVar(retrievalLevel) {\n      var bindingKey = SHARED_CONTEXT_KEY + retrievalLevel;\n\n      if (!this.map.has(bindingKey)) {\n        this.generateSharedContextVar(retrievalLevel);\n      } // Shared context variables are always generated as \"ReadVarExpr\".\n\n\n      return this.map.get(bindingKey).lhs;\n    }\n  }, {\n    key: \"getSharedContextName\",\n    value: function getSharedContextName(retrievalLevel) {\n      var sharedCtxObj = this.map.get(SHARED_CONTEXT_KEY + retrievalLevel); // Shared context variables are always generated as \"ReadVarExpr\".\n\n      return sharedCtxObj && sharedCtxObj.declare ? sharedCtxObj.lhs : null;\n    }\n  }, {\n    key: \"maybeGenerateSharedContextVar\",\n    value: function maybeGenerateSharedContextVar(value) {\n      if (value.priority === 1\n      /* CONTEXT */\n      && value.retrievalLevel < this.bindingLevel) {\n        var sharedCtxObj = this.map.get(SHARED_CONTEXT_KEY + value.retrievalLevel);\n\n        if (sharedCtxObj) {\n          sharedCtxObj.declare = true;\n        } else {\n          this.generateSharedContextVar(value.retrievalLevel);\n        }\n      }\n    }\n  }, {\n    key: \"generateSharedContextVar\",\n    value: function generateSharedContextVar(retrievalLevel) {\n      var lhs = variable(CONTEXT_NAME + this.freshReferenceName());\n      this.map.set(SHARED_CONTEXT_KEY + retrievalLevel, {\n        retrievalLevel: retrievalLevel,\n        lhs: lhs,\n        declareLocalCallback: function declareLocalCallback(scope, relativeLevel) {\n          // const ctx_r0 = nextContext(2);\n          return [lhs.set(generateNextContextExpr(relativeLevel)).toConstDecl()];\n        },\n        declare: false,\n        priority: 2\n        /* SHARED_CONTEXT */\n        ,\n        localRef: false\n      });\n    }\n  }, {\n    key: \"getComponentProperty\",\n    value: function getComponentProperty(name) {\n      var componentValue = this.map.get(SHARED_CONTEXT_KEY + 0);\n      componentValue.declare = true;\n      this.maybeRestoreView(0, false);\n      return componentValue.lhs.prop(name);\n    }\n  }, {\n    key: \"maybeRestoreView\",\n    value: function maybeRestoreView(retrievalLevel, localRefLookup) {\n      // We want to restore the current view in listener fns if:\n      // 1 - we are accessing a value in a parent view, which requires walking the view tree rather\n      // than using the ctx arg. In this case, the retrieval and binding level will be different.\n      // 2 - we are looking up a local ref, which requires restoring the view where the local\n      // ref is stored\n      if (this.isListenerScope() && (retrievalLevel < this.bindingLevel || localRefLookup)) {\n        if (!this.parent.restoreViewVariable) {\n          // parent saves variable to generate a shared `const $s$ = getCurrentView();` instruction\n          this.parent.restoreViewVariable = variable(this.parent.freshReferenceName());\n        }\n\n        this.restoreViewVariable = this.parent.restoreViewVariable;\n      }\n    }\n  }, {\n    key: \"restoreViewStatement\",\n    value: function restoreViewStatement() {\n      // restoreView($state$);\n      return this.restoreViewVariable ? [instruction(null, Identifiers$1.restoreView, [this.restoreViewVariable]).toStmt()] : [];\n    }\n  }, {\n    key: \"viewSnapshotStatements\",\n    value: function viewSnapshotStatements() {\n      // const $state$ = getCurrentView();\n      var getCurrentViewInstruction = instruction(null, Identifiers$1.getCurrentView, []);\n      return this.restoreViewVariable ? [this.restoreViewVariable.set(getCurrentViewInstruction).toConstDecl()] : [];\n    }\n  }, {\n    key: \"isListenerScope\",\n    value: function isListenerScope() {\n      return this.parent && this.parent.bindingLevel === this.bindingLevel;\n    }\n  }, {\n    key: \"variableDeclarations\",\n    value: function variableDeclarations() {\n      var _this190 = this;\n\n      var currentContextLevel = 0;\n      return Array.from(this.map.values()).filter(function (value) {\n        return value.declare;\n      }).sort(function (a, b) {\n        return b.retrievalLevel - a.retrievalLevel || b.priority - a.priority;\n      }).reduce(function (stmts, value) {\n        var levelDiff = _this190.bindingLevel - value.retrievalLevel;\n        var currStmts = value.declareLocalCallback(_this190, levelDiff - currentContextLevel);\n        currentContextLevel = levelDiff;\n        return stmts.concat(currStmts);\n      }, []);\n    }\n  }, {\n    key: \"freshReferenceName\",\n    value: function freshReferenceName() {\n      var current = this; // Find the top scope as it maintains the global reference count\n\n      while (current.parent) {\n        current = current.parent;\n      }\n\n      var ref = \"\".concat(REFERENCE_PREFIX).concat(current.referenceNameIndex++);\n      return ref;\n    }\n  }], [{\n    key: \"createRootScope\",\n    value: function createRootScope() {\n      return new BindingScope();\n    }\n  }]);\n\n  return BindingScope;\n}();\n/**\n * Creates a `CssSelector` given a tag name and a map of attributes\n */\n\n\nfunction createCssSelector(elementName, attributes) {\n  var cssSelector = new CssSelector();\n  var elementNameNoNs = splitNsName(elementName)[1];\n  cssSelector.setElement(elementNameNoNs);\n  Object.getOwnPropertyNames(attributes).forEach(function (name) {\n    var nameNoNs = splitNsName(name)[1];\n    var value = attributes[name];\n    cssSelector.addAttribute(nameNoNs, value);\n\n    if (name.toLowerCase() === 'class') {\n      var classes = value.trim().split(/\\s+/);\n      classes.forEach(function (className) {\n        return cssSelector.addClassName(className);\n      });\n    }\n  });\n  return cssSelector;\n}\n/**\n * Creates an array of expressions out of an `ngProjectAs` attributes\n * which can be added to the instruction parameters.\n */\n\n\nfunction getNgProjectAsLiteral(attribute) {\n  // Parse the attribute value into a CssSelectorList. Note that we only take the\n  // first selector, because we don't support multiple selectors in ngProjectAs.\n  var parsedR3Selector = parseSelectorToR3Selector(attribute.value)[0];\n  return [literal(5\n  /* ProjectAs */\n  ), asLiteral(parsedR3Selector)];\n}\n/**\n * Gets the instruction to generate for an interpolated property\n * @param interpolation An Interpolation AST\n */\n\n\nfunction getPropertyInterpolationExpression(interpolation) {\n  switch (getInterpolationArgsLength(interpolation)) {\n    case 1:\n      return Identifiers$1.propertyInterpolate;\n\n    case 3:\n      return Identifiers$1.propertyInterpolate1;\n\n    case 5:\n      return Identifiers$1.propertyInterpolate2;\n\n    case 7:\n      return Identifiers$1.propertyInterpolate3;\n\n    case 9:\n      return Identifiers$1.propertyInterpolate4;\n\n    case 11:\n      return Identifiers$1.propertyInterpolate5;\n\n    case 13:\n      return Identifiers$1.propertyInterpolate6;\n\n    case 15:\n      return Identifiers$1.propertyInterpolate7;\n\n    case 17:\n      return Identifiers$1.propertyInterpolate8;\n\n    default:\n      return Identifiers$1.propertyInterpolateV;\n  }\n}\n/**\n * Gets the instruction to generate for an interpolated attribute\n * @param interpolation An Interpolation AST\n */\n\n\nfunction getAttributeInterpolationExpression(interpolation) {\n  switch (getInterpolationArgsLength(interpolation)) {\n    case 3:\n      return Identifiers$1.attributeInterpolate1;\n\n    case 5:\n      return Identifiers$1.attributeInterpolate2;\n\n    case 7:\n      return Identifiers$1.attributeInterpolate3;\n\n    case 9:\n      return Identifiers$1.attributeInterpolate4;\n\n    case 11:\n      return Identifiers$1.attributeInterpolate5;\n\n    case 13:\n      return Identifiers$1.attributeInterpolate6;\n\n    case 15:\n      return Identifiers$1.attributeInterpolate7;\n\n    case 17:\n      return Identifiers$1.attributeInterpolate8;\n\n    default:\n      return Identifiers$1.attributeInterpolateV;\n  }\n}\n/**\n * Gets the instruction to generate for interpolated text.\n * @param interpolation An Interpolation AST\n */\n\n\nfunction getTextInterpolationExpression(interpolation) {\n  switch (getInterpolationArgsLength(interpolation)) {\n    case 1:\n      return Identifiers$1.textInterpolate;\n\n    case 3:\n      return Identifiers$1.textInterpolate1;\n\n    case 5:\n      return Identifiers$1.textInterpolate2;\n\n    case 7:\n      return Identifiers$1.textInterpolate3;\n\n    case 9:\n      return Identifiers$1.textInterpolate4;\n\n    case 11:\n      return Identifiers$1.textInterpolate5;\n\n    case 13:\n      return Identifiers$1.textInterpolate6;\n\n    case 15:\n      return Identifiers$1.textInterpolate7;\n\n    case 17:\n      return Identifiers$1.textInterpolate8;\n\n    default:\n      return Identifiers$1.textInterpolateV;\n  }\n}\n/**\n * Parse a template into render3 `Node`s and additional metadata, with no other dependencies.\n *\n * @param template text of the template to parse\n * @param templateUrl URL to use for source mapping of the parsed template\n * @param options options to modify how the template is parsed\n */\n\n\nfunction parseTemplate(template, templateUrl) {\n  var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n  var interpolationConfig = options.interpolationConfig,\n      preserveWhitespaces = options.preserveWhitespaces,\n      enableI18nLegacyMessageIdFormat = options.enableI18nLegacyMessageIdFormat;\n  var bindingParser = makeBindingParser(interpolationConfig);\n  var htmlParser = new HtmlParser();\n  var parseResult = htmlParser.parse(template, templateUrl, Object.assign(Object.assign({\n    leadingTriviaChars: LEADING_TRIVIA_CHARS\n  }, options), {\n    tokenizeExpansionForms: true\n  }));\n\n  if (parseResult.errors && parseResult.errors.length > 0) {\n    // TODO(ayazhafiz): we may not always want to bail out at this point (e.g. in\n    // the context of a language service).\n    return {\n      interpolationConfig: interpolationConfig,\n      preserveWhitespaces: preserveWhitespaces,\n      template: template,\n      errors: parseResult.errors,\n      nodes: [],\n      styleUrls: [],\n      styles: [],\n      ngContentSelectors: []\n    };\n  }\n\n  var rootNodes = parseResult.rootNodes; // process i18n meta information (scan attributes, generate ids)\n  // before we run whitespace removal process, because existing i18n\n  // extraction process (ng extract-i18n) relies on a raw content to generate\n  // message ids\n\n  var i18nMetaVisitor = new I18nMetaVisitor(interpolationConfig,\n  /* keepI18nAttrs */\n  !preserveWhitespaces, enableI18nLegacyMessageIdFormat);\n  rootNodes = visitAll$1(i18nMetaVisitor, rootNodes);\n\n  if (!preserveWhitespaces) {\n    rootNodes = visitAll$1(new WhitespaceVisitor(), rootNodes); // run i18n meta visitor again in case whitespaces are removed (because that might affect\n    // generated i18n message content) and first pass indicated that i18n content is present in a\n    // template. During this pass i18n IDs generated at the first pass will be preserved, so we can\n    // mimic existing extraction process (ng extract-i18n)\n\n    if (i18nMetaVisitor.hasI18nMeta) {\n      rootNodes = visitAll$1(new I18nMetaVisitor(interpolationConfig,\n      /* keepI18nAttrs */\n      false), rootNodes);\n    }\n  }\n\n  var _htmlAstToRender3Ast = htmlAstToRender3Ast(rootNodes, bindingParser),\n      nodes = _htmlAstToRender3Ast.nodes,\n      errors = _htmlAstToRender3Ast.errors,\n      styleUrls = _htmlAstToRender3Ast.styleUrls,\n      styles = _htmlAstToRender3Ast.styles,\n      ngContentSelectors = _htmlAstToRender3Ast.ngContentSelectors;\n\n  return {\n    interpolationConfig: interpolationConfig,\n    preserveWhitespaces: preserveWhitespaces,\n    errors: errors.length > 0 ? errors : null,\n    template: template,\n    nodes: nodes,\n    styleUrls: styleUrls,\n    styles: styles,\n    ngContentSelectors: ngContentSelectors\n  };\n}\n\nvar elementRegistry = new DomElementSchemaRegistry();\n/**\n * Construct a `BindingParser` with a default configuration.\n */\n\nfunction makeBindingParser() {\n  var interpolationConfig = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : DEFAULT_INTERPOLATION_CONFIG;\n  return new BindingParser(new IvyParser(new Lexer()), interpolationConfig, elementRegistry, null, []);\n}\n\nfunction resolveSanitizationFn(context, isAttribute) {\n  switch (context) {\n    case SecurityContext.HTML:\n      return importExpr(Identifiers$1.sanitizeHtml);\n\n    case SecurityContext.SCRIPT:\n      return importExpr(Identifiers$1.sanitizeScript);\n\n    case SecurityContext.STYLE:\n      // the compiler does not fill in an instruction for [style.prop?] binding\n      // values because the style algorithm knows internally what props are subject\n      // to sanitization (only [attr.style] values are explicitly sanitized)\n      return isAttribute ? importExpr(Identifiers$1.sanitizeStyle) : null;\n\n    case SecurityContext.URL:\n      return importExpr(Identifiers$1.sanitizeUrl);\n\n    case SecurityContext.RESOURCE_URL:\n      return importExpr(Identifiers$1.sanitizeResourceUrl);\n\n    default:\n      return null;\n  }\n}\n\nfunction trustedConstAttribute(tagName, attr) {\n  var value = asLiteral(attr.value);\n\n  switch (elementRegistry.securityContext(tagName, attr.name,\n  /* isAttribute */\n  true)) {\n    case SecurityContext.HTML:\n      return importExpr(Identifiers$1.trustConstantHtml).callFn([value], attr.valueSpan);\n\n    case SecurityContext.SCRIPT:\n      return importExpr(Identifiers$1.trustConstantScript).callFn([value], attr.valueSpan);\n\n    case SecurityContext.RESOURCE_URL:\n      return importExpr(Identifiers$1.trustConstantResourceUrl).callFn([value], attr.valueSpan);\n\n    default:\n      return value;\n  }\n}\n\nfunction isSingleElementTemplate(children) {\n  return children.length === 1 && children[0] instanceof Element;\n}\n\nfunction isTextNode(node) {\n  return node instanceof Text || node instanceof BoundText || node instanceof Icu;\n}\n\nfunction hasTextChildrenOnly(children) {\n  return children.every(isTextNode);\n}\n/** Name of the global variable that is used to determine if we use Closure translations or not */\n\n\nvar NG_I18N_CLOSURE_MODE = 'ngI18nClosureMode';\n/**\n * Generate statements that define a given translation message.\n *\n * ```\n * var I18N_1;\n * if (typeof ngI18nClosureMode !== undefined && ngI18nClosureMode) {\n *     var MSG_EXTERNAL_XXX = goog.getMsg(\n *          \"Some message with {$interpolation}!\",\n *          { \"interpolation\": \"\\uFFFD0\\uFFFD\" }\n *     );\n *     I18N_1 = MSG_EXTERNAL_XXX;\n * }\n * else {\n *     I18N_1 = $localize`Some message with ${'\\uFFFD0\\uFFFD'}!`;\n * }\n * ```\n *\n * @param message The original i18n AST message node\n * @param variable The variable that will be assigned the translation, e.g. `I18N_1`.\n * @param closureVar The variable for Closure `goog.getMsg` calls, e.g. `MSG_EXTERNAL_XXX`.\n * @param params Object mapping placeholder names to their values (e.g.\n * `{ \"interpolation\": \"\\uFFFD0\\uFFFD\" }`).\n * @param transformFn Optional transformation function that will be applied to the translation (e.g.\n * post-processing).\n * @returns An array of statements that defined a given translation.\n */\n\nfunction getTranslationDeclStmts(message, variable, closureVar) {\n  var params = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};\n  var transformFn = arguments.length > 4 ? arguments[4] : undefined;\n  var statements = [declareI18nVariable(variable), ifStmt(createClosureModeGuard(), createGoogleGetMsgStatements(variable, message, closureVar, i18nFormatPlaceholderNames(params,\n  /* useCamelCase */\n  true)), createLocalizeStatements(variable, message, i18nFormatPlaceholderNames(params,\n  /* useCamelCase */\n  false)))];\n\n  if (transformFn) {\n    statements.push(new ExpressionStatement(variable.set(transformFn(variable))));\n  }\n\n  return statements;\n}\n/**\n * Create the expression that will be used to guard the closure mode block\n * It is equivalent to:\n *\n * ```\n * typeof ngI18nClosureMode !== undefined && ngI18nClosureMode\n * ```\n */\n\n\nfunction createClosureModeGuard() {\n  return typeofExpr(variable(NG_I18N_CLOSURE_MODE)).notIdentical(literal('undefined', STRING_TYPE)).and(variable(NG_I18N_CLOSURE_MODE));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar EMPTY_ARRAY = []; // This regex matches any binding names that contain the \"attr.\" prefix, e.g. \"attr.required\"\n// If there is a match, the first matching group will contain the attribute name to bind.\n\nvar ATTR_REGEX = /attr\\.([^\\]]+)/;\n\nfunction baseDirectiveFields(meta, constantPool, bindingParser) {\n  var definitionMap = new DefinitionMap();\n  var selectors = parseSelectorToR3Selector(meta.selector); // e.g. `type: MyDirective`\n\n  definitionMap.set('type', meta.internalType); // e.g. `selectors: [['', 'someDir', '']]`\n\n  if (selectors.length > 0) {\n    definitionMap.set('selectors', asLiteral(selectors));\n  }\n\n  if (meta.queries.length > 0) {\n    // e.g. `contentQueries: (rf, ctx, dirIndex) => { ... }\n    definitionMap.set('contentQueries', createContentQueriesFunction(meta.queries, constantPool, meta.name));\n  }\n\n  if (meta.viewQueries.length) {\n    definitionMap.set('viewQuery', createViewQueriesFunction(meta.viewQueries, constantPool, meta.name));\n  } // e.g. `hostBindings: (rf, ctx) => { ... }\n\n\n  definitionMap.set('hostBindings', createHostBindingsFunction(meta.host, meta.typeSourceSpan, bindingParser, constantPool, meta.selector || '', meta.name, definitionMap)); // e.g 'inputs: {a: 'a'}`\n\n  definitionMap.set('inputs', conditionallyCreateMapObjectLiteral(meta.inputs, true)); // e.g 'outputs: {a: 'a'}`\n\n  definitionMap.set('outputs', conditionallyCreateMapObjectLiteral(meta.outputs));\n\n  if (meta.exportAs !== null) {\n    definitionMap.set('exportAs', literalArr(meta.exportAs.map(function (e) {\n      return literal(e);\n    })));\n  }\n\n  return definitionMap;\n}\n/**\n * Add features to the definition map.\n */\n\n\nfunction addFeatures(definitionMap, meta) {\n  // e.g. `features: [NgOnChangesFeature]`\n  var features = [];\n  var providers = meta.providers;\n  var viewProviders = meta.viewProviders;\n\n  if (providers || viewProviders) {\n    var args = [providers || new LiteralArrayExpr([])];\n\n    if (viewProviders) {\n      args.push(viewProviders);\n    }\n\n    features.push(importExpr(Identifiers$1.ProvidersFeature).callFn(args));\n  }\n\n  if (meta.usesInheritance) {\n    features.push(importExpr(Identifiers$1.InheritDefinitionFeature));\n  }\n\n  if (meta.fullInheritance) {\n    features.push(importExpr(Identifiers$1.CopyDefinitionFeature));\n  }\n\n  if (meta.lifecycle.usesOnChanges) {\n    features.push(importExpr(Identifiers$1.NgOnChangesFeature));\n  }\n\n  if (features.length) {\n    definitionMap.set('features', literalArr(features));\n  }\n}\n/**\n * Compile a directive for the render3 runtime as defined by the `R3DirectiveMetadata`.\n */\n\n\nfunction compileDirectiveFromMetadata(meta, constantPool, bindingParser) {\n  var definitionMap = baseDirectiveFields(meta, constantPool, bindingParser);\n  addFeatures(definitionMap, meta);\n  var expression = importExpr(Identifiers$1.defineDirective).callFn([definitionMap.toLiteralMap()]);\n  var typeParams = createDirectiveTypeParams(meta);\n  var type = expressionType(importExpr(Identifiers$1.DirectiveDefWithMeta, typeParams));\n  return {\n    expression: expression,\n    type: type\n  };\n}\n/**\n * Compile a component for the render3 runtime as defined by the `R3ComponentMetadata`.\n */\n\n\nfunction compileComponentFromMetadata(meta, constantPool, bindingParser) {\n  var definitionMap = baseDirectiveFields(meta, constantPool, bindingParser);\n  addFeatures(definitionMap, meta);\n  var selector = meta.selector && CssSelector.parse(meta.selector);\n  var firstSelector = selector && selector[0]; // e.g. `attr: [\"class\", \".my.app\"]`\n  // This is optional an only included if the first selector of a component specifies attributes.\n\n  if (firstSelector) {\n    var selectorAttributes = firstSelector.getAttrs();\n\n    if (selectorAttributes.length) {\n      definitionMap.set('attrs', constantPool.getConstLiteral(literalArr(selectorAttributes.map(function (value) {\n        return value != null ? literal(value) : literal(undefined);\n      })),\n      /* forceShared */\n      true));\n    }\n  } // Generate the CSS matcher that recognize directive\n\n\n  var directiveMatcher = null;\n\n  if (meta.directives.length > 0) {\n    var matcher = new SelectorMatcher();\n\n    var _iterator18 = _createForOfIteratorHelper(meta.directives),\n        _step18;\n\n    try {\n      for (_iterator18.s(); !(_step18 = _iterator18.n()).done;) {\n        var _ref20 = _step18.value;\n        var _selector = _ref20.selector;\n        var _expression = _ref20.expression;\n        matcher.addSelectables(CssSelector.parse(_selector), _expression);\n      }\n    } catch (err) {\n      _iterator18.e(err);\n    } finally {\n      _iterator18.f();\n    }\n\n    directiveMatcher = matcher;\n  } // e.g. `template: function MyComponent_Template(_ctx, _cm) {...}`\n\n\n  var templateTypeName = meta.name;\n  var templateName = templateTypeName ? \"\".concat(templateTypeName, \"_Template\") : null;\n  var directivesUsed = new Set();\n  var pipesUsed = new Set();\n  var changeDetection = meta.changeDetection;\n  var template = meta.template;\n  var templateBuilder = new TemplateDefinitionBuilder(constantPool, BindingScope.createRootScope(), 0, templateTypeName, null, null, templateName, directiveMatcher, directivesUsed, meta.pipes, pipesUsed, Identifiers$1.namespaceHTML, meta.relativeContextFilePath, meta.i18nUseExternalIds);\n  var templateFunctionExpression = templateBuilder.buildTemplateFunction(template.nodes, []); // We need to provide this so that dynamically generated components know what\n  // projected content blocks to pass through to the component when it is instantiated.\n\n  var ngContentSelectors = templateBuilder.getNgContentSelectors();\n\n  if (ngContentSelectors) {\n    definitionMap.set('ngContentSelectors', ngContentSelectors);\n  } // e.g. `decls: 2`\n\n\n  definitionMap.set('decls', literal(templateBuilder.getConstCount())); // e.g. `vars: 2`\n\n  definitionMap.set('vars', literal(templateBuilder.getVarCount())); // Generate `consts` section of ComponentDef:\n  // - either as an array:\n  //   `consts: [['one', 'two'], ['three', 'four']]`\n  // - or as a factory function in case additional statements are present (to support i18n):\n  //   `consts: function() { var i18n_0; if (ngI18nClosureMode) {...} else {...} return [i18n_0]; }`\n\n  var _templateBuilder$getC = templateBuilder.getConsts(),\n      constExpressions = _templateBuilder$getC.constExpressions,\n      prepareStatements = _templateBuilder$getC.prepareStatements;\n\n  if (constExpressions.length > 0) {\n    var constsExpr = literalArr(constExpressions); // Prepare statements are present - turn `consts` into a function.\n\n    if (prepareStatements.length > 0) {\n      constsExpr = fn([], [].concat(_toConsumableArray(prepareStatements), [new ReturnStatement(constsExpr)]));\n    }\n\n    definitionMap.set('consts', constsExpr);\n  }\n\n  definitionMap.set('template', templateFunctionExpression); // e.g. `directives: [MyDirective]`\n\n  if (directivesUsed.size) {\n    var directivesExpr = literalArr(Array.from(directivesUsed));\n\n    if (meta.wrapDirectivesAndPipesInClosure) {\n      directivesExpr = fn([], [new ReturnStatement(directivesExpr)]);\n    }\n\n    definitionMap.set('directives', directivesExpr);\n  } // e.g. `pipes: [MyPipe]`\n\n\n  if (pipesUsed.size) {\n    var pipesExpr = literalArr(Array.from(pipesUsed));\n\n    if (meta.wrapDirectivesAndPipesInClosure) {\n      pipesExpr = fn([], [new ReturnStatement(pipesExpr)]);\n    }\n\n    definitionMap.set('pipes', pipesExpr);\n  }\n\n  if (meta.encapsulation === null) {\n    meta.encapsulation = ViewEncapsulation.Emulated;\n  } // e.g. `styles: [str1, str2]`\n\n\n  if (meta.styles && meta.styles.length) {\n    var styleValues = meta.encapsulation == ViewEncapsulation.Emulated ? compileStyles(meta.styles, CONTENT_ATTR, HOST_ATTR) : meta.styles;\n    var strings = styleValues.map(function (str) {\n      return constantPool.getConstLiteral(literal(str));\n    });\n    definitionMap.set('styles', literalArr(strings));\n  } else if (meta.encapsulation === ViewEncapsulation.Emulated) {\n    // If there is no style, don't generate css selectors on elements\n    meta.encapsulation = ViewEncapsulation.None;\n  } // Only set view encapsulation if it's not the default value\n\n\n  if (meta.encapsulation !== ViewEncapsulation.Emulated) {\n    definitionMap.set('encapsulation', literal(meta.encapsulation));\n  } // e.g. `animation: [trigger('123', [])]`\n\n\n  if (meta.animations !== null) {\n    definitionMap.set('data', literalMap([{\n      key: 'animation',\n      value: meta.animations,\n      quoted: false\n    }]));\n  } // Only set the change detection flag if it's defined and it's not the default.\n\n\n  if (changeDetection != null && changeDetection !== ChangeDetectionStrategy.Default) {\n    definitionMap.set('changeDetection', literal(changeDetection));\n  }\n\n  var expression = importExpr(Identifiers$1.defineComponent).callFn([definitionMap.toLiteralMap()]);\n  var typeParams = createDirectiveTypeParams(meta);\n  typeParams.push(stringArrayAsType(meta.template.ngContentSelectors));\n  var type = expressionType(importExpr(Identifiers$1.ComponentDefWithMeta, typeParams));\n  return {\n    expression: expression,\n    type: type\n  };\n}\n/**\n * A wrapper around `compileDirective` which depends on render2 global analysis data as its input\n * instead of the `R3DirectiveMetadata`.\n *\n * `R3DirectiveMetadata` is computed from `CompileDirectiveMetadata` and other statically reflected\n * information.\n */\n\n\nfunction compileDirectiveFromRender2(outputCtx, directive, reflector, bindingParser) {\n  var name = identifierName(directive.type);\n  name || error(\"Cannot resolver the name of \".concat(directive.type));\n  var definitionField = outputCtx.constantPool.propertyNameOf(1\n  /* Directive */\n  );\n  var meta = directiveMetadataFromGlobalMetadata(directive, outputCtx, reflector);\n  var res = compileDirectiveFromMetadata(meta, outputCtx.constantPool, bindingParser);\n  var factoryRes = compileFactoryFunction(Object.assign(Object.assign({}, meta), {\n    injectFn: Identifiers$1.directiveInject,\n    target: R3FactoryTarget.Directive\n  }));\n  var ngFactoryDefStatement = new ClassStmt(name, null, [new ClassField('ɵfac', INFERRED_TYPE, [StmtModifier.Static], factoryRes.factory)], [], new ClassMethod(null, [], []), []);\n  var directiveDefStatement = new ClassStmt(name, null, [new ClassField(definitionField, INFERRED_TYPE, [StmtModifier.Static], res.expression)], [], new ClassMethod(null, [], []), []); // Create the partial class to be merged with the actual class.\n\n  outputCtx.statements.push(ngFactoryDefStatement, directiveDefStatement);\n}\n/**\n * A wrapper around `compileComponent` which depends on render2 global analysis data as its input\n * instead of the `R3DirectiveMetadata`.\n *\n * `R3ComponentMetadata` is computed from `CompileDirectiveMetadata` and other statically reflected\n * information.\n */\n\n\nfunction compileComponentFromRender2(outputCtx, component, render3Ast, reflector, bindingParser, directiveTypeBySel, pipeTypeByName) {\n  var name = identifierName(component.type);\n  name || error(\"Cannot resolver the name of \".concat(component.type));\n  var definitionField = outputCtx.constantPool.propertyNameOf(2\n  /* Component */\n  );\n  var summary = component.toSummary(); // Compute the R3ComponentMetadata from the CompileDirectiveMetadata\n\n  var meta = Object.assign(Object.assign({}, directiveMetadataFromGlobalMetadata(component, outputCtx, reflector)), {\n    selector: component.selector,\n    template: {\n      nodes: render3Ast.nodes,\n      ngContentSelectors: render3Ast.ngContentSelectors\n    },\n    directives: [],\n    pipes: typeMapToExpressionMap(pipeTypeByName, outputCtx),\n    viewQueries: queriesFromGlobalMetadata(component.viewQueries, outputCtx),\n    wrapDirectivesAndPipesInClosure: false,\n    styles: summary.template && summary.template.styles || EMPTY_ARRAY,\n    encapsulation: summary.template && summary.template.encapsulation || ViewEncapsulation.Emulated,\n    interpolation: DEFAULT_INTERPOLATION_CONFIG,\n    animations: null,\n    viewProviders: component.viewProviders.length > 0 ? new WrappedNodeExpr(component.viewProviders) : null,\n    relativeContextFilePath: '',\n    i18nUseExternalIds: true\n  });\n  var res = compileComponentFromMetadata(meta, outputCtx.constantPool, bindingParser);\n  var factoryRes = compileFactoryFunction(Object.assign(Object.assign({}, meta), {\n    injectFn: Identifiers$1.directiveInject,\n    target: R3FactoryTarget.Directive\n  }));\n  var ngFactoryDefStatement = new ClassStmt(name, null, [new ClassField('ɵfac', INFERRED_TYPE, [StmtModifier.Static], factoryRes.factory)], [], new ClassMethod(null, [], []), []);\n  var componentDefStatement = new ClassStmt(name, null, [new ClassField(definitionField, INFERRED_TYPE, [StmtModifier.Static], res.expression)], [], new ClassMethod(null, [], []), []); // Create the partial class to be merged with the actual class.\n\n  outputCtx.statements.push(ngFactoryDefStatement, componentDefStatement);\n}\n/**\n * Compute `R3DirectiveMetadata` given `CompileDirectiveMetadata` and a `CompileReflector`.\n */\n\n\nfunction directiveMetadataFromGlobalMetadata(directive, outputCtx, reflector) {\n  // The global-analysis based Ivy mode in ngc is no longer utilized/supported.\n  throw new Error('unsupported');\n}\n/**\n * Convert `CompileQueryMetadata` into `R3QueryMetadata`.\n */\n\n\nfunction queriesFromGlobalMetadata(queries, outputCtx) {\n  return queries.map(function (query) {\n    var read = null;\n\n    if (query.read && query.read.identifier) {\n      read = outputCtx.importExpr(query.read.identifier.reference);\n    }\n\n    return {\n      propertyName: query.propertyName,\n      first: query.first,\n      predicate: selectorsFromGlobalMetadata(query.selectors, outputCtx),\n      descendants: query.descendants,\n      read: read,\n      static: !!query.static\n    };\n  });\n}\n/**\n * Convert `CompileTokenMetadata` for query selectors into either an expression for a predicate\n * type, or a list of string predicates.\n */\n\n\nfunction selectorsFromGlobalMetadata(selectors, outputCtx) {\n  if (selectors.length > 1 || selectors.length == 1 && selectors[0].value) {\n    var selectorStrings = selectors.map(function (value) {\n      return value.value;\n    });\n    selectorStrings.some(function (value) {\n      return !value;\n    }) && error('Found a type among the string selectors expected');\n    return outputCtx.constantPool.getConstLiteral(literalArr(selectorStrings.map(function (value) {\n      return literal(value);\n    })));\n  }\n\n  if (selectors.length == 1) {\n    var first = selectors[0];\n\n    if (first.identifier) {\n      return outputCtx.importExpr(first.identifier.reference);\n    }\n  }\n\n  error('Unexpected query form');\n  return NULL_EXPR;\n}\n\nfunction prepareQueryParams(query, constantPool) {\n  var parameters = [getQueryPredicate(query, constantPool), literal(query.descendants)];\n\n  if (query.read) {\n    parameters.push(query.read);\n  }\n\n  return parameters;\n}\n\nfunction convertAttributesToExpressions(attributes) {\n  var values = [];\n\n  var _iterator19 = _createForOfIteratorHelper(Object.getOwnPropertyNames(attributes)),\n      _step19;\n\n  try {\n    for (_iterator19.s(); !(_step19 = _iterator19.n()).done;) {\n      var key = _step19.value;\n      var value = attributes[key];\n      values.push(literal(key), value);\n    }\n  } catch (err) {\n    _iterator19.e(err);\n  } finally {\n    _iterator19.f();\n  }\n\n  return values;\n} // Define and update any content queries\n\n\nfunction createContentQueriesFunction(queries, constantPool, name) {\n  var createStatements = [];\n  var updateStatements = [];\n  var tempAllocator = temporaryAllocator(updateStatements, TEMPORARY_NAME);\n\n  var _iterator20 = _createForOfIteratorHelper(queries),\n      _step20;\n\n  try {\n    for (_iterator20.s(); !(_step20 = _iterator20.n()).done;) {\n      var query = _step20.value;\n      var queryInstruction = query.static ? Identifiers$1.staticContentQuery : Identifiers$1.contentQuery; // creation, e.g. r3.contentQuery(dirIndex, somePredicate, true, null);\n\n      createStatements.push(importExpr(queryInstruction).callFn([variable('dirIndex')].concat(_toConsumableArray(prepareQueryParams(query, constantPool)))).toStmt()); // update, e.g. (r3.queryRefresh(tmp = r3.loadQuery()) && (ctx.someDir = tmp));\n\n      var temporary = tempAllocator();\n      var getQueryList = importExpr(Identifiers$1.loadQuery).callFn([]);\n      var refresh = importExpr(Identifiers$1.queryRefresh).callFn([temporary.set(getQueryList)]);\n      var updateDirective = variable(CONTEXT_NAME).prop(query.propertyName).set(query.first ? temporary.prop('first') : temporary);\n      updateStatements.push(refresh.and(updateDirective).toStmt());\n    }\n  } catch (err) {\n    _iterator20.e(err);\n  } finally {\n    _iterator20.f();\n  }\n\n  var contentQueriesFnName = name ? \"\".concat(name, \"_ContentQueries\") : null;\n  return fn([new FnParam(RENDER_FLAGS, NUMBER_TYPE), new FnParam(CONTEXT_NAME, null), new FnParam('dirIndex', null)], [renderFlagCheckIfStmt(1\n  /* Create */\n  , createStatements), renderFlagCheckIfStmt(2\n  /* Update */\n  , updateStatements)], INFERRED_TYPE, null, contentQueriesFnName);\n}\n\nfunction stringAsType(str) {\n  return expressionType(literal(str));\n}\n\nfunction stringMapAsType(map) {\n  var mapValues = Object.keys(map).map(function (key) {\n    var value = Array.isArray(map[key]) ? map[key][0] : map[key];\n    return {\n      key: key,\n      value: literal(value),\n      quoted: true\n    };\n  });\n  return expressionType(literalMap(mapValues));\n}\n\nfunction stringArrayAsType(arr) {\n  return arr.length > 0 ? expressionType(literalArr(arr.map(function (value) {\n    return literal(value);\n  }))) : NONE_TYPE;\n}\n\nfunction createDirectiveTypeParams(meta) {\n  // On the type side, remove newlines from the selector as it will need to fit into a TypeScript\n  // string literal, which must be on one line.\n  var selectorForType = meta.selector !== null ? meta.selector.replace(/\\n/g, '') : null;\n  return [typeWithParameters(meta.type.type, meta.typeArgumentCount), selectorForType !== null ? stringAsType(selectorForType) : NONE_TYPE, meta.exportAs !== null ? stringArrayAsType(meta.exportAs) : NONE_TYPE, stringMapAsType(meta.inputs), stringMapAsType(meta.outputs), stringArrayAsType(meta.queries.map(function (q) {\n    return q.propertyName;\n  }))];\n} // Define and update any view queries\n\n\nfunction createViewQueriesFunction(viewQueries, constantPool, name) {\n  var createStatements = [];\n  var updateStatements = [];\n  var tempAllocator = temporaryAllocator(updateStatements, TEMPORARY_NAME);\n  viewQueries.forEach(function (query) {\n    var queryInstruction = query.static ? Identifiers$1.staticViewQuery : Identifiers$1.viewQuery; // creation, e.g. r3.viewQuery(somePredicate, true);\n\n    var queryDefinition = importExpr(queryInstruction).callFn(prepareQueryParams(query, constantPool));\n    createStatements.push(queryDefinition.toStmt()); // update, e.g. (r3.queryRefresh(tmp = r3.loadQuery()) && (ctx.someDir = tmp));\n\n    var temporary = tempAllocator();\n    var getQueryList = importExpr(Identifiers$1.loadQuery).callFn([]);\n    var refresh = importExpr(Identifiers$1.queryRefresh).callFn([temporary.set(getQueryList)]);\n    var updateDirective = variable(CONTEXT_NAME).prop(query.propertyName).set(query.first ? temporary.prop('first') : temporary);\n    updateStatements.push(refresh.and(updateDirective).toStmt());\n  });\n  var viewQueryFnName = name ? \"\".concat(name, \"_Query\") : null;\n  return fn([new FnParam(RENDER_FLAGS, NUMBER_TYPE), new FnParam(CONTEXT_NAME, null)], [renderFlagCheckIfStmt(1\n  /* Create */\n  , createStatements), renderFlagCheckIfStmt(2\n  /* Update */\n  , updateStatements)], INFERRED_TYPE, null, viewQueryFnName);\n} // Return a host binding function or null if one is not necessary.\n\n\nfunction createHostBindingsFunction(hostBindingsMetadata, typeSourceSpan, bindingParser, constantPool, selector, name, definitionMap) {\n  var bindingContext = variable(CONTEXT_NAME);\n  var styleBuilder = new StylingBuilder(bindingContext);\n  var _hostBindingsMetadata = hostBindingsMetadata.specialAttributes,\n      styleAttr = _hostBindingsMetadata.styleAttr,\n      classAttr = _hostBindingsMetadata.classAttr;\n\n  if (styleAttr !== undefined) {\n    styleBuilder.registerStyleAttr(styleAttr);\n  }\n\n  if (classAttr !== undefined) {\n    styleBuilder.registerClassAttr(classAttr);\n  }\n\n  var createStatements = [];\n  var updateStatements = [];\n  var hostBindingSourceSpan = typeSourceSpan;\n  var directiveSummary = metadataAsSummary(hostBindingsMetadata); // Calculate host event bindings\n\n  var eventBindings = bindingParser.createDirectiveHostEventAsts(directiveSummary, hostBindingSourceSpan);\n\n  if (eventBindings && eventBindings.length) {\n    var listeners = createHostListeners(eventBindings, name);\n    createStatements.push.apply(createStatements, _toConsumableArray(listeners));\n  } // Calculate the host property bindings\n\n\n  var bindings = bindingParser.createBoundHostProperties(directiveSummary, hostBindingSourceSpan);\n  var allOtherBindings = []; // We need to calculate the total amount of binding slots required by\n  // all the instructions together before any value conversions happen.\n  // Value conversions may require additional slots for interpolation and\n  // bindings with pipes. These calculates happen after this block.\n\n  var totalHostVarsCount = 0;\n  bindings && bindings.forEach(function (binding) {\n    var stylingInputWasSet = styleBuilder.registerInputBasedOnName(binding.name, binding.expression, hostBindingSourceSpan);\n\n    if (stylingInputWasSet) {\n      totalHostVarsCount += MIN_STYLING_BINDING_SLOTS_REQUIRED;\n    } else {\n      allOtherBindings.push(binding);\n      totalHostVarsCount++;\n    }\n  });\n  var valueConverter;\n\n  var getValueConverter = function getValueConverter() {\n    if (!valueConverter) {\n      var hostVarsCountFn = function hostVarsCountFn(numSlots) {\n        var originalVarsCount = totalHostVarsCount;\n        totalHostVarsCount += numSlots;\n        return originalVarsCount;\n      };\n\n      valueConverter = new ValueConverter(constantPool, function () {\n        return error('Unexpected node');\n      }, // new nodes are illegal here\n      hostVarsCountFn, function () {\n        return error('Unexpected pipe');\n      }); // pipes are illegal here\n    }\n\n    return valueConverter;\n  };\n\n  var propertyBindings = [];\n  var attributeBindings = [];\n  var syntheticHostBindings = [];\n  allOtherBindings.forEach(function (binding) {\n    // resolve literal arrays and literal objects\n    var value = binding.expression.visit(getValueConverter());\n    var bindingExpr = bindingFn(bindingContext, value);\n\n    var _getBindingNameAndIns = getBindingNameAndInstruction(binding),\n        bindingName = _getBindingNameAndIns.bindingName,\n        instruction = _getBindingNameAndIns.instruction,\n        isAttribute = _getBindingNameAndIns.isAttribute;\n\n    var securityContexts = bindingParser.calcPossibleSecurityContexts(selector, bindingName, isAttribute).filter(function (context) {\n      return context !== SecurityContext.NONE;\n    });\n    var sanitizerFn = null;\n\n    if (securityContexts.length) {\n      if (securityContexts.length === 2 && securityContexts.indexOf(SecurityContext.URL) > -1 && securityContexts.indexOf(SecurityContext.RESOURCE_URL) > -1) {\n        // Special case for some URL attributes (such as \"src\" and \"href\") that may be a part\n        // of different security contexts. In this case we use special santitization function and\n        // select the actual sanitizer at runtime based on a tag name that is provided while\n        // invoking sanitization function.\n        sanitizerFn = importExpr(Identifiers$1.sanitizeUrlOrResourceUrl);\n      } else {\n        sanitizerFn = resolveSanitizationFn(securityContexts[0], isAttribute);\n      }\n    }\n\n    var instructionParams = [literal(bindingName), bindingExpr.currValExpr];\n\n    if (sanitizerFn) {\n      instructionParams.push(sanitizerFn);\n    }\n\n    updateStatements.push.apply(updateStatements, _toConsumableArray(bindingExpr.stmts));\n\n    if (instruction === Identifiers$1.hostProperty) {\n      propertyBindings.push(instructionParams);\n    } else if (instruction === Identifiers$1.attribute) {\n      attributeBindings.push(instructionParams);\n    } else if (instruction === Identifiers$1.syntheticHostProperty) {\n      syntheticHostBindings.push(instructionParams);\n    } else {\n      updateStatements.push(importExpr(instruction).callFn(instructionParams).toStmt());\n    }\n  });\n\n  if (propertyBindings.length > 0) {\n    updateStatements.push(chainedInstruction(Identifiers$1.hostProperty, propertyBindings).toStmt());\n  }\n\n  if (attributeBindings.length > 0) {\n    updateStatements.push(chainedInstruction(Identifiers$1.attribute, attributeBindings).toStmt());\n  }\n\n  if (syntheticHostBindings.length > 0) {\n    updateStatements.push(chainedInstruction(Identifiers$1.syntheticHostProperty, syntheticHostBindings).toStmt());\n  } // since we're dealing with directives/components and both have hostBinding\n  // functions, we need to generate a special hostAttrs instruction that deals\n  // with both the assignment of styling as well as static attributes to the host\n  // element. The instruction below will instruct all initial styling (styling\n  // that is inside of a host binding within a directive/component) to be attached\n  // to the host element alongside any of the provided host attributes that were\n  // collected earlier.\n\n\n  var hostAttrs = convertAttributesToExpressions(hostBindingsMetadata.attributes);\n  styleBuilder.assignHostAttrs(hostAttrs, definitionMap);\n\n  if (styleBuilder.hasBindings) {\n    // finally each binding that was registered in the statement above will need to be added to\n    // the update block of a component/directive templateFn/hostBindingsFn so that the bindings\n    // are evaluated and updated for the element.\n    styleBuilder.buildUpdateLevelInstructions(getValueConverter()).forEach(function (instruction) {\n      if (instruction.calls.length > 0) {\n        var calls = [];\n        instruction.calls.forEach(function (call) {\n          // we subtract a value of `1` here because the binding slot was already allocated\n          // at the top of this method when all the input bindings were counted.\n          totalHostVarsCount += Math.max(call.allocateBindingSlots - MIN_STYLING_BINDING_SLOTS_REQUIRED, 0);\n          calls.push(convertStylingCall(call, bindingContext, bindingFn));\n        });\n        updateStatements.push(chainedInstruction(instruction.reference, calls).toStmt());\n      }\n    });\n  }\n\n  if (totalHostVarsCount) {\n    definitionMap.set('hostVars', literal(totalHostVarsCount));\n  }\n\n  if (createStatements.length > 0 || updateStatements.length > 0) {\n    var hostBindingsFnName = name ? \"\".concat(name, \"_HostBindings\") : null;\n    var statements = [];\n\n    if (createStatements.length > 0) {\n      statements.push(renderFlagCheckIfStmt(1\n      /* Create */\n      , createStatements));\n    }\n\n    if (updateStatements.length > 0) {\n      statements.push(renderFlagCheckIfStmt(2\n      /* Update */\n      , updateStatements));\n    }\n\n    return fn([new FnParam(RENDER_FLAGS, NUMBER_TYPE), new FnParam(CONTEXT_NAME, null)], statements, INFERRED_TYPE, null, hostBindingsFnName);\n  }\n\n  return null;\n}\n\nfunction bindingFn(implicit, value) {\n  return _convertPropertyBinding(null, implicit, value, 'b', BindingForm.Expression, function () {\n    return error('Unexpected interpolation');\n  });\n}\n\nfunction convertStylingCall(call, bindingContext, bindingFn) {\n  return call.params(function (value) {\n    return bindingFn(bindingContext, value).currValExpr;\n  });\n}\n\nfunction getBindingNameAndInstruction(binding) {\n  var bindingName = binding.name;\n  var instruction; // Check to see if this is an attr binding or a property binding\n\n  var attrMatches = bindingName.match(ATTR_REGEX);\n\n  if (attrMatches) {\n    bindingName = attrMatches[1];\n    instruction = Identifiers$1.attribute;\n  } else {\n    if (binding.isAnimation) {\n      bindingName = prepareSyntheticPropertyName(bindingName); // host bindings that have a synthetic property (e.g. @foo) should always be rendered\n      // in the context of the component and not the parent. Therefore there is a special\n      // compatibility instruction available for this purpose.\n\n      instruction = Identifiers$1.syntheticHostProperty;\n    } else {\n      instruction = Identifiers$1.hostProperty;\n    }\n  }\n\n  return {\n    bindingName: bindingName,\n    instruction: instruction,\n    isAttribute: !!attrMatches\n  };\n}\n\nfunction createHostListeners(eventBindings, name) {\n  var listeners = [];\n  var syntheticListeners = [];\n  var instructions = [];\n  eventBindings.forEach(function (binding) {\n    var bindingName = binding.name && sanitizeIdentifier(binding.name);\n    var bindingFnName = binding.type === 1\n    /* Animation */\n    ? prepareSyntheticListenerFunctionName(bindingName, binding.targetOrPhase) : bindingName;\n    var handlerName = name && bindingName ? \"\".concat(name, \"_\").concat(bindingFnName, \"_HostBindingHandler\") : null;\n    var params = prepareEventListenerParameters(BoundEvent.fromParsedEvent(binding), handlerName);\n\n    if (binding.type == 1\n    /* Animation */\n    ) {\n      syntheticListeners.push(params);\n    } else {\n      listeners.push(params);\n    }\n  });\n\n  if (syntheticListeners.length > 0) {\n    instructions.push(chainedInstruction(Identifiers$1.syntheticHostListener, syntheticListeners).toStmt());\n  }\n\n  if (listeners.length > 0) {\n    instructions.push(chainedInstruction(Identifiers$1.listener, listeners).toStmt());\n  }\n\n  return instructions;\n}\n\nfunction metadataAsSummary(meta) {\n  // clang-format off\n  return {\n    // This is used by the BindingParser, which only deals with listeners and properties. There's no\n    // need to pass attributes to it.\n    hostAttributes: {},\n    hostListeners: meta.listeners,\n    hostProperties: meta.properties\n  }; // clang-format on\n}\n\nfunction typeMapToExpressionMap(map, outputCtx) {\n  // Convert each map entry into another entry where the value is an expression importing the type.\n  var entries = Array.from(map).map(function (_ref21) {\n    var _ref22 = _slicedToArray(_ref21, 2),\n        key = _ref22[0],\n        type = _ref22[1];\n\n    return [key, outputCtx.importExpr(type)];\n  });\n  return new Map(entries);\n}\n\nvar HOST_REG_EXP$1 = /^(?:\\[([^\\]]+)\\])|(?:\\(([^\\)]+)\\))$/;\n\nfunction parseHostBindings(host) {\n  var attributes = {};\n  var listeners = {};\n  var properties = {};\n  var specialAttributes = {};\n\n  for (var _i8 = 0, _Object$keys2 = Object.keys(host); _i8 < _Object$keys2.length; _i8++) {\n    var key = _Object$keys2[_i8];\n    var value = host[key];\n    var matches = key.match(HOST_REG_EXP$1);\n\n    if (matches === null) {\n      switch (key) {\n        case 'class':\n          if (typeof value !== 'string') {\n            // TODO(alxhub): make this a diagnostic.\n            throw new Error(\"Class binding must be string\");\n          }\n\n          specialAttributes.classAttr = value;\n          break;\n\n        case 'style':\n          if (typeof value !== 'string') {\n            // TODO(alxhub): make this a diagnostic.\n            throw new Error(\"Style binding must be string\");\n          }\n\n          specialAttributes.styleAttr = value;\n          break;\n\n        default:\n          if (typeof value === 'string') {\n            attributes[key] = literal(value);\n          } else {\n            attributes[key] = value;\n          }\n\n      }\n    } else if (matches[1\n    /* Binding */\n    ] != null) {\n      if (typeof value !== 'string') {\n        // TODO(alxhub): make this a diagnostic.\n        throw new Error(\"Property binding must be string\");\n      } // synthetic properties (the ones that have a `@` as a prefix)\n      // are still treated the same as regular properties. Therefore\n      // there is no point in storing them in a separate map.\n\n\n      properties[matches[1\n      /* Binding */\n      ]] = value;\n    } else if (matches[2\n    /* Event */\n    ] != null) {\n      if (typeof value !== 'string') {\n        // TODO(alxhub): make this a diagnostic.\n        throw new Error(\"Event binding must be string\");\n      }\n\n      listeners[matches[2\n      /* Event */\n      ]] = value;\n    }\n  }\n\n  return {\n    attributes: attributes,\n    listeners: listeners,\n    properties: properties,\n    specialAttributes: specialAttributes\n  };\n}\n/**\n * Verifies host bindings and returns the list of errors (if any). Empty array indicates that a\n * given set of host bindings has no errors.\n *\n * @param bindings set of host bindings to verify.\n * @param sourceSpan source span where host bindings were defined.\n * @returns array of errors associated with a given set of host bindings.\n */\n\n\nfunction verifyHostBindings(bindings, sourceSpan) {\n  var summary = metadataAsSummary(bindings); // TODO: abstract out host bindings verification logic and use it instead of\n  // creating events and properties ASTs to detect errors (FW-996)\n\n  var bindingParser = makeBindingParser();\n  bindingParser.createDirectiveHostEventAsts(summary, sourceSpan);\n  bindingParser.createBoundHostProperties(summary, sourceSpan);\n  return bindingParser.errors;\n}\n\nfunction compileStyles(styles, selector, hostSelector) {\n  var shadowCss = new ShadowCss();\n  return styles.map(function (style) {\n    return shadowCss.shimCssText(style, selector, hostSelector);\n  });\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * An interface for retrieving documents by URL that the compiler uses\n * to load templates.\n */\n\n\nvar ResourceLoader = /*#__PURE__*/function () {\n  function ResourceLoader() {\n    _classCallCheck(this, ResourceLoader);\n  }\n\n  _createClass(ResourceLoader, [{\n    key: \"get\",\n    value: function get(url) {\n      return '';\n    }\n  }]);\n\n  return ResourceLoader;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar CompilerFacadeImpl = /*#__PURE__*/function () {\n  function CompilerFacadeImpl() {\n    var jitEvaluator = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : new JitEvaluator();\n\n    _classCallCheck(this, CompilerFacadeImpl);\n\n    this.jitEvaluator = jitEvaluator;\n    this.R3ResolvedDependencyType = R3ResolvedDependencyType;\n    this.R3FactoryTarget = R3FactoryTarget;\n    this.ResourceLoader = ResourceLoader;\n    this.elementSchemaRegistry = new DomElementSchemaRegistry();\n  }\n\n  _createClass(CompilerFacadeImpl, [{\n    key: \"compilePipe\",\n    value: function compilePipe(angularCoreEnv, sourceMapUrl, facade) {\n      var metadata = {\n        name: facade.name,\n        type: wrapReference$1(facade.type),\n        internalType: new WrappedNodeExpr(facade.type),\n        typeArgumentCount: facade.typeArgumentCount,\n        deps: convertR3DependencyMetadataArray(facade.deps),\n        pipeName: facade.pipeName,\n        pure: facade.pure\n      };\n      var res = compilePipeFromMetadata(metadata);\n      return this.jitExpression(res.expression, angularCoreEnv, sourceMapUrl, []);\n    }\n  }, {\n    key: \"compileInjectable\",\n    value: function compileInjectable(angularCoreEnv, sourceMapUrl, facade) {\n      var _compileInjectable2 = _compileInjectable({\n        name: facade.name,\n        type: wrapReference$1(facade.type),\n        internalType: new WrappedNodeExpr(facade.type),\n        typeArgumentCount: facade.typeArgumentCount,\n        providedIn: computeProvidedIn(facade.providedIn),\n        useClass: wrapExpression(facade, USE_CLASS),\n        useFactory: wrapExpression(facade, USE_FACTORY),\n        useValue: wrapExpression(facade, USE_VALUE),\n        useExisting: wrapExpression(facade, USE_EXISTING),\n        userDeps: convertR3DependencyMetadataArray(facade.userDeps) || undefined\n      }),\n          expression = _compileInjectable2.expression,\n          statements = _compileInjectable2.statements;\n\n      return this.jitExpression(expression, angularCoreEnv, sourceMapUrl, statements);\n    }\n  }, {\n    key: \"compileInjector\",\n    value: function compileInjector(angularCoreEnv, sourceMapUrl, facade) {\n      var meta = {\n        name: facade.name,\n        type: wrapReference$1(facade.type),\n        internalType: new WrappedNodeExpr(facade.type),\n        deps: convertR3DependencyMetadataArray(facade.deps),\n        providers: new WrappedNodeExpr(facade.providers),\n        imports: facade.imports.map(function (i) {\n          return new WrappedNodeExpr(i);\n        })\n      };\n\n      var res = _compileInjector(meta);\n\n      return this.jitExpression(res.expression, angularCoreEnv, sourceMapUrl, res.statements);\n    }\n  }, {\n    key: \"compileNgModule\",\n    value: function compileNgModule(angularCoreEnv, sourceMapUrl, facade) {\n      var meta = {\n        type: wrapReference$1(facade.type),\n        internalType: new WrappedNodeExpr(facade.type),\n        adjacentType: new WrappedNodeExpr(facade.type),\n        bootstrap: facade.bootstrap.map(wrapReference$1),\n        declarations: facade.declarations.map(wrapReference$1),\n        imports: facade.imports.map(wrapReference$1),\n        exports: facade.exports.map(wrapReference$1),\n        emitInline: true,\n        containsForwardDecls: false,\n        schemas: facade.schemas ? facade.schemas.map(wrapReference$1) : null,\n        id: facade.id ? new WrappedNodeExpr(facade.id) : null\n      };\n\n      var res = _compileNgModule(meta);\n\n      return this.jitExpression(res.expression, angularCoreEnv, sourceMapUrl, []);\n    }\n  }, {\n    key: \"compileDirective\",\n    value: function compileDirective(angularCoreEnv, sourceMapUrl, facade) {\n      var constantPool = new ConstantPool();\n      var bindingParser = makeBindingParser();\n      var meta = convertDirectiveFacadeToMetadata(facade);\n      var res = compileDirectiveFromMetadata(meta, constantPool, bindingParser);\n      return this.jitExpression(res.expression, angularCoreEnv, sourceMapUrl, constantPool.statements);\n    }\n  }, {\n    key: \"compileComponent\",\n    value: function compileComponent(angularCoreEnv, sourceMapUrl, facade) {\n      // The ConstantPool is a requirement of the JIT'er.\n      var constantPool = new ConstantPool();\n      var interpolationConfig = facade.interpolation ? InterpolationConfig.fromArray(facade.interpolation) : DEFAULT_INTERPOLATION_CONFIG; // Parse the template and check for errors.\n\n      var template = parseTemplate(facade.template, sourceMapUrl, {\n        preserveWhitespaces: facade.preserveWhitespaces,\n        interpolationConfig: interpolationConfig\n      });\n\n      if (template.errors !== null) {\n        var errors = template.errors.map(function (err) {\n          return err.toString();\n        }).join(', ');\n        throw new Error(\"Errors during JIT compilation of template for \".concat(facade.name, \": \").concat(errors));\n      } // Compile the component metadata, including template, into an expression.\n      // TODO(alxhub): implement inputs, outputs, queries, etc.\n\n\n      var metadata = Object.assign(Object.assign(Object.assign({}, facade), convertDirectiveFacadeToMetadata(facade)), {\n        selector: facade.selector || this.elementSchemaRegistry.getDefaultComponentElementName(),\n        template: template,\n        wrapDirectivesAndPipesInClosure: false,\n        styles: [].concat(_toConsumableArray(facade.styles), _toConsumableArray(template.styles)),\n        encapsulation: facade.encapsulation,\n        interpolation: interpolationConfig,\n        changeDetection: facade.changeDetection,\n        animations: facade.animations != null ? new WrappedNodeExpr(facade.animations) : null,\n        viewProviders: facade.viewProviders != null ? new WrappedNodeExpr(facade.viewProviders) : null,\n        relativeContextFilePath: '',\n        i18nUseExternalIds: true\n      });\n      var res = compileComponentFromMetadata(metadata, constantPool, makeBindingParser(interpolationConfig));\n      var jitExpressionSourceMap = \"ng:///\".concat(facade.name, \".js\");\n      return this.jitExpression(res.expression, angularCoreEnv, jitExpressionSourceMap, constantPool.statements);\n    }\n  }, {\n    key: \"compileFactory\",\n    value: function compileFactory(angularCoreEnv, sourceMapUrl, meta) {\n      var factoryRes = compileFactoryFunction({\n        name: meta.name,\n        type: wrapReference$1(meta.type),\n        internalType: new WrappedNodeExpr(meta.type),\n        typeArgumentCount: meta.typeArgumentCount,\n        deps: convertR3DependencyMetadataArray(meta.deps),\n        injectFn: meta.injectFn === 'directiveInject' ? Identifiers.directiveInject : Identifiers.inject,\n        target: meta.target\n      });\n      return this.jitExpression(factoryRes.factory, angularCoreEnv, sourceMapUrl, factoryRes.statements);\n    }\n  }, {\n    key: \"createParseSourceSpan\",\n    value: function createParseSourceSpan(kind, typeName, sourceUrl) {\n      return r3JitTypeSourceSpan(kind, typeName, sourceUrl);\n    }\n    /**\n     * JIT compiles an expression and returns the result of executing that expression.\n     *\n     * @param def the definition which will be compiled and executed to get the value to patch\n     * @param context an object map of @angular/core symbol names to symbols which will be available\n     * in the context of the compiled expression\n     * @param sourceUrl a URL to use for the source map of the compiled expression\n     * @param preStatements a collection of statements that should be evaluated before the expression.\n     */\n\n  }, {\n    key: \"jitExpression\",\n    value: function jitExpression(def, context, sourceUrl, preStatements) {\n      // The ConstantPool may contain Statements which declare variables used in the final expression.\n      // Therefore, its statements need to precede the actual JIT operation. The final statement is a\n      // declaration of $def which is set to the expression being compiled.\n      var statements = [].concat(_toConsumableArray(preStatements), [new DeclareVarStmt('$def', def, undefined, [StmtModifier.Exported])]);\n      var res = this.jitEvaluator.evaluateStatements(sourceUrl, statements, new R3JitReflector(context),\n      /* enableSourceMaps */\n      true);\n      return res['$def'];\n    }\n  }]);\n\n  return CompilerFacadeImpl;\n}();\n\nvar USE_CLASS = Object.keys({\n  useClass: null\n})[0];\nvar USE_FACTORY = Object.keys({\n  useFactory: null\n})[0];\nvar USE_VALUE = Object.keys({\n  useValue: null\n})[0];\nvar USE_EXISTING = Object.keys({\n  useExisting: null\n})[0];\n\nvar wrapReference$1 = function wrapReference$1(value) {\n  var wrapped = new WrappedNodeExpr(value);\n  return {\n    value: wrapped,\n    type: wrapped\n  };\n};\n\nfunction convertToR3QueryMetadata(facade) {\n  return Object.assign(Object.assign({}, facade), {\n    predicate: Array.isArray(facade.predicate) ? facade.predicate : new WrappedNodeExpr(facade.predicate),\n    read: facade.read ? new WrappedNodeExpr(facade.read) : null,\n    static: facade.static\n  });\n}\n\nfunction convertDirectiveFacadeToMetadata(facade) {\n  var inputsFromMetadata = parseInputOutputs(facade.inputs || []);\n  var outputsFromMetadata = parseInputOutputs(facade.outputs || []);\n  var propMetadata = facade.propMetadata;\n  var inputsFromType = {};\n  var outputsFromType = {};\n\n  var _loop = function _loop(field) {\n    if (propMetadata.hasOwnProperty(field)) {\n      propMetadata[field].forEach(function (ann) {\n        if (isInput(ann)) {\n          inputsFromType[field] = ann.bindingPropertyName ? [ann.bindingPropertyName, field] : field;\n        } else if (isOutput(ann)) {\n          outputsFromType[field] = ann.bindingPropertyName || field;\n        }\n      });\n    }\n  };\n\n  for (var field in propMetadata) {\n    _loop(field);\n  }\n\n  return Object.assign(Object.assign({}, facade), {\n    typeSourceSpan: facade.typeSourceSpan,\n    type: wrapReference$1(facade.type),\n    internalType: new WrappedNodeExpr(facade.type),\n    deps: convertR3DependencyMetadataArray(facade.deps),\n    host: extractHostBindings(facade.propMetadata, facade.typeSourceSpan, facade.host),\n    inputs: Object.assign(Object.assign({}, inputsFromMetadata), inputsFromType),\n    outputs: Object.assign(Object.assign({}, outputsFromMetadata), outputsFromType),\n    queries: facade.queries.map(convertToR3QueryMetadata),\n    providers: facade.providers != null ? new WrappedNodeExpr(facade.providers) : null,\n    viewQueries: facade.viewQueries.map(convertToR3QueryMetadata),\n    fullInheritance: false\n  });\n}\n\nfunction wrapExpression(obj, property) {\n  if (obj.hasOwnProperty(property)) {\n    return new WrappedNodeExpr(obj[property]);\n  } else {\n    return undefined;\n  }\n}\n\nfunction computeProvidedIn(providedIn) {\n  if (providedIn == null || typeof providedIn === 'string') {\n    return new LiteralExpr(providedIn);\n  } else {\n    return new WrappedNodeExpr(providedIn);\n  }\n}\n\nfunction convertR3DependencyMetadata(facade) {\n  var tokenExpr;\n\n  if (facade.token === null) {\n    tokenExpr = new LiteralExpr(null);\n  } else if (facade.resolved === R3ResolvedDependencyType.Attribute) {\n    tokenExpr = new LiteralExpr(facade.token);\n  } else {\n    tokenExpr = new WrappedNodeExpr(facade.token);\n  }\n\n  return {\n    token: tokenExpr,\n    attribute: null,\n    resolved: facade.resolved,\n    host: facade.host,\n    optional: facade.optional,\n    self: facade.self,\n    skipSelf: facade.skipSelf\n  };\n}\n\nfunction convertR3DependencyMetadataArray(facades) {\n  return facades == null ? null : facades.map(convertR3DependencyMetadata);\n}\n\nfunction extractHostBindings(propMetadata, sourceSpan, host) {\n  // First parse the declarations from the metadata.\n  var bindings = parseHostBindings(host || {}); // After that check host bindings for errors\n\n  var errors = verifyHostBindings(bindings, sourceSpan);\n\n  if (errors.length) {\n    throw new Error(errors.map(function (error) {\n      return error.msg;\n    }).join('\\n'));\n  } // Next, loop over the properties of the object, looking for @HostBinding and @HostListener.\n\n\n  var _loop2 = function _loop2(field) {\n    if (propMetadata.hasOwnProperty(field)) {\n      propMetadata[field].forEach(function (ann) {\n        if (isHostBinding(ann)) {\n          bindings.properties[ann.hostPropertyName || field] = field;\n        } else if (isHostListener(ann)) {\n          bindings.listeners[ann.eventName || field] = \"\".concat(field, \"(\").concat((ann.args || []).join(','), \")\");\n        }\n      });\n    }\n  };\n\n  for (var field in propMetadata) {\n    _loop2(field);\n  }\n\n  return bindings;\n}\n\nfunction isHostBinding(value) {\n  return value.ngMetadataName === 'HostBinding';\n}\n\nfunction isHostListener(value) {\n  return value.ngMetadataName === 'HostListener';\n}\n\nfunction isInput(value) {\n  return value.ngMetadataName === 'Input';\n}\n\nfunction isOutput(value) {\n  return value.ngMetadataName === 'Output';\n}\n\nfunction parseInputOutputs(values) {\n  return values.reduce(function (map, value) {\n    var _value$split$map = value.split(',').map(function (piece) {\n      return piece.trim();\n    }),\n        _value$split$map2 = _slicedToArray(_value$split$map, 2),\n        field = _value$split$map2[0],\n        property = _value$split$map2[1];\n\n    map[field] = property || field;\n    return map;\n  }, {});\n}\n\nfunction publishFacade(global) {\n  var ng = global.ng || (global.ng = {});\n  ng.ɵcompilerFacade = new CompilerFacadeImpl();\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar VERSION$1 = new Version('11.0.2');\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar CompilerConfig = /*#__PURE__*/_createClass(function CompilerConfig() {\n  var _ref23 = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},\n      _ref23$defaultEncapsu = _ref23.defaultEncapsulation,\n      defaultEncapsulation = _ref23$defaultEncapsu === void 0 ? ViewEncapsulation.Emulated : _ref23$defaultEncapsu,\n      _ref23$useJit = _ref23.useJit,\n      useJit = _ref23$useJit === void 0 ? true : _ref23$useJit,\n      _ref23$jitDevMode = _ref23.jitDevMode,\n      jitDevMode = _ref23$jitDevMode === void 0 ? false : _ref23$jitDevMode,\n      _ref23$missingTransla = _ref23.missingTranslation,\n      missingTranslation = _ref23$missingTransla === void 0 ? null : _ref23$missingTransla,\n      preserveWhitespaces = _ref23.preserveWhitespaces,\n      strictInjectionParameters = _ref23.strictInjectionParameters;\n\n  _classCallCheck(this, CompilerConfig);\n\n  this.defaultEncapsulation = defaultEncapsulation;\n  this.useJit = !!useJit;\n  this.jitDevMode = !!jitDevMode;\n  this.missingTranslation = missingTranslation;\n  this.preserveWhitespaces = preserveWhitespacesDefault(noUndefined(preserveWhitespaces));\n  this.strictInjectionParameters = strictInjectionParameters === true;\n});\n\nfunction preserveWhitespacesDefault(preserveWhitespacesOption) {\n  var defaultSetting = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n  return preserveWhitespacesOption === null ? defaultSetting : preserveWhitespacesOption;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar DirectiveNormalizer = /*#__PURE__*/function () {\n  function DirectiveNormalizer(_resourceLoader, _urlResolver, _htmlParser, _config) {\n    _classCallCheck(this, DirectiveNormalizer);\n\n    this._resourceLoader = _resourceLoader;\n    this._urlResolver = _urlResolver;\n    this._htmlParser = _htmlParser;\n    this._config = _config;\n    this._resourceLoaderCache = new Map();\n  }\n\n  _createClass(DirectiveNormalizer, [{\n    key: \"clearCache\",\n    value: function clearCache() {\n      this._resourceLoaderCache.clear();\n    }\n  }, {\n    key: \"clearCacheFor\",\n    value: function clearCacheFor(normalizedDirective) {\n      var _this191 = this;\n\n      if (!normalizedDirective.isComponent) {\n        return;\n      }\n\n      var template = normalizedDirective.template;\n\n      this._resourceLoaderCache.delete(template.templateUrl);\n\n      template.externalStylesheets.forEach(function (stylesheet) {\n        _this191._resourceLoaderCache.delete(stylesheet.moduleUrl);\n      });\n    }\n  }, {\n    key: \"_fetch\",\n    value: function _fetch(url) {\n      var result = this._resourceLoaderCache.get(url);\n\n      if (!result) {\n        result = this._resourceLoader.get(url);\n\n        this._resourceLoaderCache.set(url, result);\n      }\n\n      return result;\n    }\n  }, {\n    key: \"normalizeTemplate\",\n    value: function normalizeTemplate(prenormData) {\n      var _this192 = this;\n\n      if (isDefined(prenormData.template)) {\n        if (isDefined(prenormData.templateUrl)) {\n          throw syntaxError(\"'\".concat(stringify(prenormData.componentType), \"' component cannot define both template and templateUrl\"));\n        }\n\n        if (typeof prenormData.template !== 'string') {\n          throw syntaxError(\"The template specified for component \".concat(stringify(prenormData.componentType), \" is not a string\"));\n        }\n      } else if (isDefined(prenormData.templateUrl)) {\n        if (typeof prenormData.templateUrl !== 'string') {\n          throw syntaxError(\"The templateUrl specified for component \".concat(stringify(prenormData.componentType), \" is not a string\"));\n        }\n      } else {\n        throw syntaxError(\"No template specified for component \".concat(stringify(prenormData.componentType)));\n      }\n\n      if (isDefined(prenormData.preserveWhitespaces) && typeof prenormData.preserveWhitespaces !== 'boolean') {\n        throw syntaxError(\"The preserveWhitespaces option for component \".concat(stringify(prenormData.componentType), \" must be a boolean\"));\n      }\n\n      return SyncAsync.then(this._preParseTemplate(prenormData), function (preparsedTemplate) {\n        return _this192._normalizeTemplateMetadata(prenormData, preparsedTemplate);\n      });\n    }\n  }, {\n    key: \"_preParseTemplate\",\n    value: function _preParseTemplate(prenomData) {\n      var _this193 = this;\n\n      var template;\n      var templateUrl;\n\n      if (prenomData.template != null) {\n        template = prenomData.template;\n        templateUrl = prenomData.moduleUrl;\n      } else {\n        templateUrl = this._urlResolver.resolve(prenomData.moduleUrl, prenomData.templateUrl);\n        template = this._fetch(templateUrl);\n      }\n\n      return SyncAsync.then(template, function (template) {\n        return _this193._preparseLoadedTemplate(prenomData, template, templateUrl);\n      });\n    }\n  }, {\n    key: \"_preparseLoadedTemplate\",\n    value: function _preparseLoadedTemplate(prenormData, template, templateAbsUrl) {\n      var isInline = !!prenormData.template;\n      var interpolationConfig = InterpolationConfig.fromArray(prenormData.interpolation);\n      var templateUrl = templateSourceUrl({\n        reference: prenormData.ngModuleType\n      }, {\n        type: {\n          reference: prenormData.componentType\n        }\n      }, {\n        isInline: isInline,\n        templateUrl: templateAbsUrl\n      });\n\n      var rootNodesAndErrors = this._htmlParser.parse(template, templateUrl, {\n        tokenizeExpansionForms: true,\n        interpolationConfig: interpolationConfig\n      });\n\n      if (rootNodesAndErrors.errors.length > 0) {\n        var errorString = rootNodesAndErrors.errors.join('\\n');\n        throw syntaxError(\"Template parse errors:\\n\".concat(errorString));\n      }\n\n      var templateMetadataStyles = this._normalizeStylesheet(new CompileStylesheetMetadata({\n        styles: prenormData.styles,\n        moduleUrl: prenormData.moduleUrl\n      }));\n\n      var visitor = new TemplatePreparseVisitor();\n      visitAll$1(visitor, rootNodesAndErrors.rootNodes);\n\n      var templateStyles = this._normalizeStylesheet(new CompileStylesheetMetadata({\n        styles: visitor.styles,\n        styleUrls: visitor.styleUrls,\n        moduleUrl: templateAbsUrl\n      }));\n\n      var styles = templateMetadataStyles.styles.concat(templateStyles.styles);\n      var inlineStyleUrls = templateMetadataStyles.styleUrls.concat(templateStyles.styleUrls);\n\n      var styleUrls = this._normalizeStylesheet(new CompileStylesheetMetadata({\n        styleUrls: prenormData.styleUrls,\n        moduleUrl: prenormData.moduleUrl\n      })).styleUrls;\n\n      return {\n        template: template,\n        templateUrl: templateAbsUrl,\n        isInline: isInline,\n        htmlAst: rootNodesAndErrors,\n        styles: styles,\n        inlineStyleUrls: inlineStyleUrls,\n        styleUrls: styleUrls,\n        ngContentSelectors: visitor.ngContentSelectors\n      };\n    }\n  }, {\n    key: \"_normalizeTemplateMetadata\",\n    value: function _normalizeTemplateMetadata(prenormData, preparsedTemplate) {\n      var _this194 = this;\n\n      return SyncAsync.then(this._loadMissingExternalStylesheets(preparsedTemplate.styleUrls.concat(preparsedTemplate.inlineStyleUrls)), function (externalStylesheets) {\n        return _this194._normalizeLoadedTemplateMetadata(prenormData, preparsedTemplate, externalStylesheets);\n      });\n    }\n  }, {\n    key: \"_normalizeLoadedTemplateMetadata\",\n    value: function _normalizeLoadedTemplateMetadata(prenormData, preparsedTemplate, stylesheets) {\n      var _this195 = this;\n\n      // Algorithm:\n      // - produce exactly 1 entry per original styleUrl in\n      // CompileTemplateMetadata.externalStylesheets with all styles inlined\n      // - inline all styles that are referenced by the template into CompileTemplateMetadata.styles.\n      // Reason: be able to determine how many stylesheets there are even without loading\n      // the template nor the stylesheets, so we can create a stub for TypeScript always synchronously\n      // (as resource loading may be async)\n      var styles = _toConsumableArray(preparsedTemplate.styles);\n\n      this._inlineStyles(preparsedTemplate.inlineStyleUrls, stylesheets, styles);\n\n      var styleUrls = preparsedTemplate.styleUrls;\n      var externalStylesheets = styleUrls.map(function (styleUrl) {\n        var stylesheet = stylesheets.get(styleUrl);\n\n        var styles = _toConsumableArray(stylesheet.styles);\n\n        _this195._inlineStyles(stylesheet.styleUrls, stylesheets, styles);\n\n        return new CompileStylesheetMetadata({\n          moduleUrl: styleUrl,\n          styles: styles\n        });\n      });\n      var encapsulation = prenormData.encapsulation;\n\n      if (encapsulation == null) {\n        encapsulation = this._config.defaultEncapsulation;\n      }\n\n      if (encapsulation === ViewEncapsulation.Emulated && styles.length === 0 && styleUrls.length === 0) {\n        encapsulation = ViewEncapsulation.None;\n      }\n\n      return new CompileTemplateMetadata({\n        encapsulation: encapsulation,\n        template: preparsedTemplate.template,\n        templateUrl: preparsedTemplate.templateUrl,\n        htmlAst: preparsedTemplate.htmlAst,\n        styles: styles,\n        styleUrls: styleUrls,\n        ngContentSelectors: preparsedTemplate.ngContentSelectors,\n        animations: prenormData.animations,\n        interpolation: prenormData.interpolation,\n        isInline: preparsedTemplate.isInline,\n        externalStylesheets: externalStylesheets,\n        preserveWhitespaces: preserveWhitespacesDefault(prenormData.preserveWhitespaces, this._config.preserveWhitespaces)\n      });\n    }\n  }, {\n    key: \"_inlineStyles\",\n    value: function _inlineStyles(styleUrls, stylesheets, targetStyles) {\n      var _this196 = this;\n\n      styleUrls.forEach(function (styleUrl) {\n        var stylesheet = stylesheets.get(styleUrl);\n        stylesheet.styles.forEach(function (style) {\n          return targetStyles.push(style);\n        });\n\n        _this196._inlineStyles(stylesheet.styleUrls, stylesheets, targetStyles);\n      });\n    }\n  }, {\n    key: \"_loadMissingExternalStylesheets\",\n    value: function _loadMissingExternalStylesheets(styleUrls) {\n      var _this197 = this;\n\n      var loadedStylesheets = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : new Map();\n      return SyncAsync.then(SyncAsync.all(styleUrls.filter(function (styleUrl) {\n        return !loadedStylesheets.has(styleUrl);\n      }).map(function (styleUrl) {\n        return SyncAsync.then(_this197._fetch(styleUrl), function (loadedStyle) {\n          var stylesheet = _this197._normalizeStylesheet(new CompileStylesheetMetadata({\n            styles: [loadedStyle],\n            moduleUrl: styleUrl\n          }));\n\n          loadedStylesheets.set(styleUrl, stylesheet);\n          return _this197._loadMissingExternalStylesheets(stylesheet.styleUrls, loadedStylesheets);\n        });\n      })), function (_) {\n        return loadedStylesheets;\n      });\n    }\n  }, {\n    key: \"_normalizeStylesheet\",\n    value: function _normalizeStylesheet(stylesheet) {\n      var _this198 = this;\n\n      var moduleUrl = stylesheet.moduleUrl;\n      var allStyleUrls = stylesheet.styleUrls.filter(isStyleUrlResolvable).map(function (url) {\n        return _this198._urlResolver.resolve(moduleUrl, url);\n      });\n      var allStyles = stylesheet.styles.map(function (style) {\n        var styleWithImports = extractStyleUrls(_this198._urlResolver, moduleUrl, style);\n        allStyleUrls.push.apply(allStyleUrls, _toConsumableArray(styleWithImports.styleUrls));\n        return styleWithImports.style;\n      });\n      return new CompileStylesheetMetadata({\n        styles: allStyles,\n        styleUrls: allStyleUrls,\n        moduleUrl: moduleUrl\n      });\n    }\n  }]);\n\n  return DirectiveNormalizer;\n}();\n\nvar TemplatePreparseVisitor = /*#__PURE__*/function () {\n  function TemplatePreparseVisitor() {\n    _classCallCheck(this, TemplatePreparseVisitor);\n\n    this.ngContentSelectors = [];\n    this.styles = [];\n    this.styleUrls = [];\n    this.ngNonBindableStackCount = 0;\n  }\n\n  _createClass(TemplatePreparseVisitor, [{\n    key: \"visitElement\",\n    value: function visitElement(ast, context) {\n      var preparsedElement = preparseElement(ast);\n\n      switch (preparsedElement.type) {\n        case PreparsedElementType.NG_CONTENT:\n          if (this.ngNonBindableStackCount === 0) {\n            this.ngContentSelectors.push(preparsedElement.selectAttr);\n          }\n\n          break;\n\n        case PreparsedElementType.STYLE:\n          var textContent = '';\n          ast.children.forEach(function (child) {\n            if (child instanceof Text$3) {\n              textContent += child.value;\n            }\n          });\n          this.styles.push(textContent);\n          break;\n\n        case PreparsedElementType.STYLESHEET:\n          this.styleUrls.push(preparsedElement.hrefAttr);\n          break;\n\n        default:\n          break;\n      }\n\n      if (preparsedElement.nonBindable) {\n        this.ngNonBindableStackCount++;\n      }\n\n      visitAll$1(this, ast.children);\n\n      if (preparsedElement.nonBindable) {\n        this.ngNonBindableStackCount--;\n      }\n\n      return null;\n    }\n  }, {\n    key: \"visitExpansion\",\n    value: function visitExpansion(ast, context) {\n      visitAll$1(this, ast.cases);\n    }\n  }, {\n    key: \"visitExpansionCase\",\n    value: function visitExpansionCase(ast, context) {\n      visitAll$1(this, ast.expression);\n    }\n  }, {\n    key: \"visitComment\",\n    value: function visitComment(ast, context) {\n      return null;\n    }\n  }, {\n    key: \"visitAttribute\",\n    value: function visitAttribute(ast, context) {\n      return null;\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(ast, context) {\n      return null;\n    }\n  }]);\n\n  return TemplatePreparseVisitor;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar QUERY_METADATA_IDENTIFIERS = [createViewChild, createViewChildren, createContentChild, createContentChildren];\n/*\n * Resolve a `Type` for {@link Directive}.\n *\n * This interface can be overridden by the application developer to create custom behavior.\n *\n * See {@link Compiler}\n */\n\nvar DirectiveResolver = /*#__PURE__*/function () {\n  function DirectiveResolver(_reflector) {\n    _classCallCheck(this, DirectiveResolver);\n\n    this._reflector = _reflector;\n  }\n\n  _createClass(DirectiveResolver, [{\n    key: \"isDirective\",\n    value: function isDirective(type) {\n      var typeMetadata = this._reflector.annotations(resolveForwardRef(type));\n\n      return typeMetadata && typeMetadata.some(isDirectiveMetadata);\n    }\n  }, {\n    key: \"resolve\",\n    value: function resolve(type) {\n      var throwIfNotFound = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;\n\n      var typeMetadata = this._reflector.annotations(resolveForwardRef(type));\n\n      if (typeMetadata) {\n        var metadata = findLast(typeMetadata, isDirectiveMetadata);\n\n        if (metadata) {\n          var propertyMetadata = this._reflector.propMetadata(type);\n\n          var guards = this._reflector.guards(type);\n\n          return this._mergeWithPropertyMetadata(metadata, propertyMetadata, guards, type);\n        }\n      }\n\n      if (throwIfNotFound) {\n        throw new Error(\"No Directive annotation found on \".concat(stringify(type)));\n      }\n\n      return null;\n    }\n  }, {\n    key: \"_mergeWithPropertyMetadata\",\n    value: function _mergeWithPropertyMetadata(dm, propertyMetadata, guards, directiveType) {\n      var inputs = [];\n      var outputs = [];\n      var host = {};\n      var queries = {};\n      Object.keys(propertyMetadata).forEach(function (propName) {\n        var input = findLast(propertyMetadata[propName], function (a) {\n          return createInput.isTypeOf(a);\n        });\n\n        if (input) {\n          if (input.bindingPropertyName) {\n            inputs.push(\"\".concat(propName, \": \").concat(input.bindingPropertyName));\n          } else {\n            inputs.push(propName);\n          }\n        }\n\n        var output = findLast(propertyMetadata[propName], function (a) {\n          return createOutput.isTypeOf(a);\n        });\n\n        if (output) {\n          if (output.bindingPropertyName) {\n            outputs.push(\"\".concat(propName, \": \").concat(output.bindingPropertyName));\n          } else {\n            outputs.push(propName);\n          }\n        }\n\n        var hostBindings = propertyMetadata[propName].filter(function (a) {\n          return createHostBinding.isTypeOf(a);\n        });\n        hostBindings.forEach(function (hostBinding) {\n          if (hostBinding.hostPropertyName) {\n            var startWith = hostBinding.hostPropertyName[0];\n\n            if (startWith === '(') {\n              throw new Error(\"@HostBinding can not bind to events. Use @HostListener instead.\");\n            } else if (startWith === '[') {\n              throw new Error(\"@HostBinding parameter should be a property name, 'class.<name>', or 'attr.<name>'.\");\n            }\n\n            host[\"[\".concat(hostBinding.hostPropertyName, \"]\")] = propName;\n          } else {\n            host[\"[\".concat(propName, \"]\")] = propName;\n          }\n        });\n        var hostListeners = propertyMetadata[propName].filter(function (a) {\n          return createHostListener.isTypeOf(a);\n        });\n        hostListeners.forEach(function (hostListener) {\n          var args = hostListener.args || [];\n          host[\"(\".concat(hostListener.eventName, \")\")] = \"\".concat(propName, \"(\").concat(args.join(','), \")\");\n        });\n        var query = findLast(propertyMetadata[propName], function (a) {\n          return QUERY_METADATA_IDENTIFIERS.some(function (i) {\n            return i.isTypeOf(a);\n          });\n        });\n\n        if (query) {\n          queries[propName] = query;\n        }\n      });\n      return this._merge(dm, inputs, outputs, host, queries, guards, directiveType);\n    }\n  }, {\n    key: \"_extractPublicName\",\n    value: function _extractPublicName(def) {\n      return splitAtColon(def, [null, def])[1].trim();\n    }\n  }, {\n    key: \"_dedupeBindings\",\n    value: function _dedupeBindings(bindings) {\n      var names = new Set();\n      var publicNames = new Set();\n      var reversedResult = []; // go last to first to allow later entries to overwrite previous entries\n\n      for (var i = bindings.length - 1; i >= 0; i--) {\n        var binding = bindings[i];\n\n        var name = this._extractPublicName(binding);\n\n        publicNames.add(name);\n\n        if (!names.has(name)) {\n          names.add(name);\n          reversedResult.push(binding);\n        }\n      }\n\n      return reversedResult.reverse();\n    }\n  }, {\n    key: \"_merge\",\n    value: function _merge(directive, inputs, outputs, host, queries, guards, directiveType) {\n      var mergedInputs = this._dedupeBindings(directive.inputs ? directive.inputs.concat(inputs) : inputs);\n\n      var mergedOutputs = this._dedupeBindings(directive.outputs ? directive.outputs.concat(outputs) : outputs);\n\n      var mergedHost = directive.host ? Object.assign(Object.assign({}, directive.host), host) : host;\n      var mergedQueries = directive.queries ? Object.assign(Object.assign({}, directive.queries), queries) : queries;\n\n      if (createComponent.isTypeOf(directive)) {\n        var comp = directive;\n        return createComponent({\n          selector: comp.selector,\n          inputs: mergedInputs,\n          outputs: mergedOutputs,\n          host: mergedHost,\n          exportAs: comp.exportAs,\n          moduleId: comp.moduleId,\n          queries: mergedQueries,\n          changeDetection: comp.changeDetection,\n          providers: comp.providers,\n          viewProviders: comp.viewProviders,\n          entryComponents: comp.entryComponents,\n          template: comp.template,\n          templateUrl: comp.templateUrl,\n          styles: comp.styles,\n          styleUrls: comp.styleUrls,\n          encapsulation: comp.encapsulation,\n          animations: comp.animations,\n          interpolation: comp.interpolation,\n          preserveWhitespaces: directive.preserveWhitespaces\n        });\n      } else {\n        return createDirective({\n          selector: directive.selector,\n          inputs: mergedInputs,\n          outputs: mergedOutputs,\n          host: mergedHost,\n          exportAs: directive.exportAs,\n          queries: mergedQueries,\n          providers: directive.providers,\n          guards: guards\n        });\n      }\n    }\n  }]);\n\n  return DirectiveResolver;\n}();\n\nfunction isDirectiveMetadata(type) {\n  return createDirective.isTypeOf(type) || createComponent.isTypeOf(type);\n}\n\nfunction findLast(arr, condition) {\n  for (var i = arr.length - 1; i >= 0; i--) {\n    if (condition(arr[i])) {\n      return arr[i];\n    }\n  }\n\n  return null;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * An i18n error.\n */\n\n\nvar I18nError = /*#__PURE__*/function (_ParseError6) {\n  _inherits(I18nError, _ParseError6);\n\n  var _super98 = _createSuper(I18nError);\n\n  function I18nError(span, msg) {\n    _classCallCheck(this, I18nError);\n\n    return _super98.call(this, span, msg);\n  }\n\n  return _createClass(I18nError);\n}(ParseError);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar _I18N_ATTR = 'i18n';\nvar _I18N_ATTR_PREFIX = 'i18n-';\nvar _I18N_COMMENT_PREFIX_REGEXP = /^i18n:?/;\nvar MEANING_SEPARATOR = '|';\nvar ID_SEPARATOR = '@@';\nvar i18nCommentsWarned = false;\n/**\n * Extract translatable messages from an html AST\n */\n\nfunction extractMessages(nodes, interpolationConfig, implicitTags, implicitAttrs) {\n  var visitor = new _Visitor$2(implicitTags, implicitAttrs);\n  return visitor.extract(nodes, interpolationConfig);\n}\n\nfunction mergeTranslations(nodes, translations, interpolationConfig, implicitTags, implicitAttrs) {\n  var visitor = new _Visitor$2(implicitTags, implicitAttrs);\n  return visitor.merge(nodes, translations, interpolationConfig);\n}\n\nvar ExtractionResult = /*#__PURE__*/_createClass(function ExtractionResult(messages, errors) {\n  _classCallCheck(this, ExtractionResult);\n\n  this.messages = messages;\n  this.errors = errors;\n});\n\nvar _VisitorMode;\n\n(function (_VisitorMode) {\n  _VisitorMode[_VisitorMode[\"Extract\"] = 0] = \"Extract\";\n  _VisitorMode[_VisitorMode[\"Merge\"] = 1] = \"Merge\";\n})(_VisitorMode || (_VisitorMode = {}));\n/**\n * This Visitor is used:\n * 1. to extract all the translatable strings from an html AST (see `extract()`),\n * 2. to replace the translatable strings with the actual translations (see `merge()`)\n *\n * @internal\n */\n\n\nvar _Visitor$2 = /*#__PURE__*/function () {\n  function _Visitor$2(_implicitTags, _implicitAttrs) {\n    _classCallCheck(this, _Visitor$2);\n\n    this._implicitTags = _implicitTags;\n    this._implicitAttrs = _implicitAttrs;\n  }\n  /**\n   * Extracts the messages from the tree\n   */\n\n\n  _createClass(_Visitor$2, [{\n    key: \"extract\",\n    value: function extract(nodes, interpolationConfig) {\n      var _this199 = this;\n\n      this._init(_VisitorMode.Extract, interpolationConfig);\n\n      nodes.forEach(function (node) {\n        return node.visit(_this199, null);\n      });\n\n      if (this._inI18nBlock) {\n        this._reportError(nodes[nodes.length - 1], 'Unclosed block');\n      }\n\n      return new ExtractionResult(this._messages, this._errors);\n    }\n    /**\n     * Returns a tree where all translatable nodes are translated\n     */\n\n  }, {\n    key: \"merge\",\n    value: function merge(nodes, translations, interpolationConfig) {\n      this._init(_VisitorMode.Merge, interpolationConfig);\n\n      this._translations = translations; // Construct a single fake root element\n\n      var wrapper = new Element$1('wrapper', [], nodes, undefined, undefined, undefined);\n      var translatedNode = wrapper.visit(this, null);\n\n      if (this._inI18nBlock) {\n        this._reportError(nodes[nodes.length - 1], 'Unclosed block');\n      }\n\n      return new ParseTreeResult(translatedNode.children, this._errors);\n    }\n  }, {\n    key: \"visitExpansionCase\",\n    value: function visitExpansionCase(icuCase, context) {\n      // Parse cases for translatable html attributes\n      var expression = visitAll$1(this, icuCase.expression, context);\n\n      if (this._mode === _VisitorMode.Merge) {\n        return new ExpansionCase(icuCase.value, expression, icuCase.sourceSpan, icuCase.valueSourceSpan, icuCase.expSourceSpan);\n      }\n    }\n  }, {\n    key: \"visitExpansion\",\n    value: function visitExpansion(icu, context) {\n      this._mayBeAddBlockChildren(icu);\n\n      var wasInIcu = this._inIcu;\n\n      if (!this._inIcu) {\n        // nested ICU messages should not be extracted but top-level translated as a whole\n        if (this._isInTranslatableSection) {\n          this._addMessage([icu]);\n        }\n\n        this._inIcu = true;\n      }\n\n      var cases = visitAll$1(this, icu.cases, context);\n\n      if (this._mode === _VisitorMode.Merge) {\n        icu = new Expansion(icu.switchValue, icu.type, cases, icu.sourceSpan, icu.switchValueSourceSpan);\n      }\n\n      this._inIcu = wasInIcu;\n      return icu;\n    }\n  }, {\n    key: \"visitComment\",\n    value: function visitComment(comment, context) {\n      var isOpening = _isOpeningComment(comment);\n\n      if (isOpening && this._isInTranslatableSection) {\n        this._reportError(comment, 'Could not start a block inside a translatable section');\n\n        return;\n      }\n\n      var isClosing = _isClosingComment(comment);\n\n      if (isClosing && !this._inI18nBlock) {\n        this._reportError(comment, 'Trying to close an unopened block');\n\n        return;\n      }\n\n      if (!this._inI18nNode && !this._inIcu) {\n        if (!this._inI18nBlock) {\n          if (isOpening) {\n            // deprecated from v5 you should use <ng-container i18n> instead of i18n comments\n            if (!i18nCommentsWarned && console && console.warn) {\n              i18nCommentsWarned = true;\n              var details = comment.sourceSpan.details ? \", \".concat(comment.sourceSpan.details) : ''; // TODO(ocombe): use a log service once there is a public one available\n\n              console.warn(\"I18n comments are deprecated, use an <ng-container> element instead (\".concat(comment.sourceSpan.start).concat(details, \")\"));\n            }\n\n            this._inI18nBlock = true;\n            this._blockStartDepth = this._depth;\n            this._blockChildren = [];\n            this._blockMeaningAndDesc = comment.value.replace(_I18N_COMMENT_PREFIX_REGEXP, '').trim();\n\n            this._openTranslatableSection(comment);\n          }\n        } else {\n          if (isClosing) {\n            if (this._depth == this._blockStartDepth) {\n              this._closeTranslatableSection(comment, this._blockChildren);\n\n              this._inI18nBlock = false;\n\n              var message = this._addMessage(this._blockChildren, this._blockMeaningAndDesc); // merge attributes in sections\n\n\n              var nodes = this._translateMessage(comment, message);\n\n              return visitAll$1(this, nodes);\n            } else {\n              this._reportError(comment, 'I18N blocks should not cross element boundaries');\n\n              return;\n            }\n          }\n        }\n      }\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text, context) {\n      if (this._isInTranslatableSection) {\n        this._mayBeAddBlockChildren(text);\n      }\n\n      return text;\n    }\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(el, context) {\n      var _this200 = this;\n\n      this._mayBeAddBlockChildren(el);\n\n      this._depth++;\n      var wasInI18nNode = this._inI18nNode;\n      var wasInImplicitNode = this._inImplicitNode;\n      var childNodes = [];\n      var translatedChildNodes = undefined; // Extract:\n      // - top level nodes with the (implicit) \"i18n\" attribute if not already in a section\n      // - ICU messages\n\n      var i18nAttr = _getI18nAttr(el);\n\n      var i18nMeta = i18nAttr ? i18nAttr.value : '';\n      var isImplicit = this._implicitTags.some(function (tag) {\n        return el.name === tag;\n      }) && !this._inIcu && !this._isInTranslatableSection;\n      var isTopLevelImplicit = !wasInImplicitNode && isImplicit;\n      this._inImplicitNode = wasInImplicitNode || isImplicit;\n\n      if (!this._isInTranslatableSection && !this._inIcu) {\n        if (i18nAttr || isTopLevelImplicit) {\n          this._inI18nNode = true;\n\n          var message = this._addMessage(el.children, i18nMeta);\n\n          translatedChildNodes = this._translateMessage(el, message);\n        }\n\n        if (this._mode == _VisitorMode.Extract) {\n          var isTranslatable = i18nAttr || isTopLevelImplicit;\n          if (isTranslatable) this._openTranslatableSection(el);\n          visitAll$1(this, el.children);\n          if (isTranslatable) this._closeTranslatableSection(el, el.children);\n        }\n      } else {\n        if (i18nAttr || isTopLevelImplicit) {\n          this._reportError(el, 'Could not mark an element as translatable inside a translatable section');\n        }\n\n        if (this._mode == _VisitorMode.Extract) {\n          // Descend into child nodes for extraction\n          visitAll$1(this, el.children);\n        }\n      }\n\n      if (this._mode === _VisitorMode.Merge) {\n        var visitNodes = translatedChildNodes || el.children;\n        visitNodes.forEach(function (child) {\n          var visited = child.visit(_this200, context);\n\n          if (visited && !_this200._isInTranslatableSection) {\n            // Do not add the children from translatable sections (= i18n blocks here)\n            // They will be added later in this loop when the block closes (i.e. on `<!-- /i18n -->`)\n            childNodes = childNodes.concat(visited);\n          }\n        });\n      }\n\n      this._visitAttributesOf(el);\n\n      this._depth--;\n      this._inI18nNode = wasInI18nNode;\n      this._inImplicitNode = wasInImplicitNode;\n\n      if (this._mode === _VisitorMode.Merge) {\n        var translatedAttrs = this._translateAttributes(el);\n\n        return new Element$1(el.name, translatedAttrs, childNodes, el.sourceSpan, el.startSourceSpan, el.endSourceSpan);\n      }\n\n      return null;\n    }\n  }, {\n    key: \"visitAttribute\",\n    value: function visitAttribute(attribute, context) {\n      throw new Error('unreachable code');\n    }\n  }, {\n    key: \"_init\",\n    value: function _init(mode, interpolationConfig) {\n      this._mode = mode;\n      this._inI18nBlock = false;\n      this._inI18nNode = false;\n      this._depth = 0;\n      this._inIcu = false;\n      this._msgCountAtSectionStart = undefined;\n      this._errors = [];\n      this._messages = [];\n      this._inImplicitNode = false;\n      this._createI18nMessage = createI18nMessageFactory(interpolationConfig);\n    } // looks for translatable attributes\n\n  }, {\n    key: \"_visitAttributesOf\",\n    value: function _visitAttributesOf(el) {\n      var _this201 = this;\n\n      var explicitAttrNameToValue = {};\n      var implicitAttrNames = this._implicitAttrs[el.name] || [];\n      el.attrs.filter(function (attr) {\n        return attr.name.startsWith(_I18N_ATTR_PREFIX);\n      }).forEach(function (attr) {\n        return explicitAttrNameToValue[attr.name.slice(_I18N_ATTR_PREFIX.length)] = attr.value;\n      });\n      el.attrs.forEach(function (attr) {\n        if (attr.name in explicitAttrNameToValue) {\n          _this201._addMessage([attr], explicitAttrNameToValue[attr.name]);\n        } else if (implicitAttrNames.some(function (name) {\n          return attr.name === name;\n        })) {\n          _this201._addMessage([attr]);\n        }\n      });\n    } // add a translatable message\n\n  }, {\n    key: \"_addMessage\",\n    value: function _addMessage(ast, msgMeta) {\n      if (ast.length == 0 || ast.length == 1 && ast[0] instanceof Attribute && !ast[0].value) {\n        // Do not create empty messages\n        return null;\n      }\n\n      var _parseMessageMeta2 = _parseMessageMeta(msgMeta),\n          meaning = _parseMessageMeta2.meaning,\n          description = _parseMessageMeta2.description,\n          id = _parseMessageMeta2.id;\n\n      var message = this._createI18nMessage(ast, meaning, description, id);\n\n      this._messages.push(message);\n\n      return message;\n    } // Translates the given message given the `TranslationBundle`\n    // This is used for translating elements / blocks - see `_translateAttributes` for attributes\n    // no-op when called in extraction mode (returns [])\n\n  }, {\n    key: \"_translateMessage\",\n    value: function _translateMessage(el, message) {\n      if (message && this._mode === _VisitorMode.Merge) {\n        var nodes = this._translations.get(message);\n\n        if (nodes) {\n          return nodes;\n        }\n\n        this._reportError(el, \"Translation unavailable for message id=\\\"\".concat(this._translations.digest(message), \"\\\"\"));\n      }\n\n      return [];\n    } // translate the attributes of an element and remove i18n specific attributes\n\n  }, {\n    key: \"_translateAttributes\",\n    value: function _translateAttributes(el) {\n      var _this202 = this;\n\n      var attributes = el.attrs;\n      var i18nParsedMessageMeta = {};\n      attributes.forEach(function (attr) {\n        if (attr.name.startsWith(_I18N_ATTR_PREFIX)) {\n          i18nParsedMessageMeta[attr.name.slice(_I18N_ATTR_PREFIX.length)] = _parseMessageMeta(attr.value);\n        }\n      });\n      var translatedAttributes = [];\n      attributes.forEach(function (attr) {\n        if (attr.name === _I18N_ATTR || attr.name.startsWith(_I18N_ATTR_PREFIX)) {\n          // strip i18n specific attributes\n          return;\n        }\n\n        if (attr.value && attr.value != '' && i18nParsedMessageMeta.hasOwnProperty(attr.name)) {\n          var _i18nParsedMessageMet = i18nParsedMessageMeta[attr.name],\n              meaning = _i18nParsedMessageMet.meaning,\n              description = _i18nParsedMessageMet.description,\n              id = _i18nParsedMessageMet.id;\n\n          var message = _this202._createI18nMessage([attr], meaning, description, id);\n\n          var nodes = _this202._translations.get(message);\n\n          if (nodes) {\n            if (nodes.length == 0) {\n              translatedAttributes.push(new Attribute(attr.name, '', attr.sourceSpan));\n            } else if (nodes[0] instanceof Text$3) {\n              var value = nodes[0].value;\n              translatedAttributes.push(new Attribute(attr.name, value, attr.sourceSpan));\n            } else {\n              _this202._reportError(el, \"Unexpected translation for attribute \\\"\".concat(attr.name, \"\\\" (id=\\\"\").concat(id || _this202._translations.digest(message), \"\\\")\"));\n            }\n          } else {\n            _this202._reportError(el, \"Translation unavailable for attribute \\\"\".concat(attr.name, \"\\\" (id=\\\"\").concat(id || _this202._translations.digest(message), \"\\\")\"));\n          }\n        } else {\n          translatedAttributes.push(attr);\n        }\n      });\n      return translatedAttributes;\n    }\n    /**\n     * Add the node as a child of the block when:\n     * - we are in a block,\n     * - we are not inside a ICU message (those are handled separately),\n     * - the node is a \"direct child\" of the block\n     */\n\n  }, {\n    key: \"_mayBeAddBlockChildren\",\n    value: function _mayBeAddBlockChildren(node) {\n      if (this._inI18nBlock && !this._inIcu && this._depth == this._blockStartDepth) {\n        this._blockChildren.push(node);\n      }\n    }\n    /**\n     * Marks the start of a section, see `_closeTranslatableSection`\n     */\n\n  }, {\n    key: \"_openTranslatableSection\",\n    value: function _openTranslatableSection(node) {\n      if (this._isInTranslatableSection) {\n        this._reportError(node, 'Unexpected section start');\n      } else {\n        this._msgCountAtSectionStart = this._messages.length;\n      }\n    }\n    /**\n     * A translatable section could be:\n     * - the content of translatable element,\n     * - nodes between `<!-- i18n -->` and `<!-- /i18n -->` comments\n     */\n\n  }, {\n    key: \"_isInTranslatableSection\",\n    get: function get() {\n      return this._msgCountAtSectionStart !== void 0;\n    }\n    /**\n     * Terminates a section.\n     *\n     * If a section has only one significant children (comments not significant) then we should not\n     * keep the message from this children:\n     *\n     * `<p i18n=\"meaning|description\">{ICU message}</p>` would produce two messages:\n     * - one for the <p> content with meaning and description,\n     * - another one for the ICU message.\n     *\n     * In this case the last message is discarded as it contains less information (the AST is\n     * otherwise identical).\n     *\n     * Note that we should still keep messages extracted from attributes inside the section (ie in the\n     * ICU message here)\n     */\n\n  }, {\n    key: \"_closeTranslatableSection\",\n    value: function _closeTranslatableSection(node, directChildren) {\n      if (!this._isInTranslatableSection) {\n        this._reportError(node, 'Unexpected section end');\n\n        return;\n      }\n\n      var startIndex = this._msgCountAtSectionStart;\n      var significantChildren = directChildren.reduce(function (count, node) {\n        return count + (node instanceof Comment ? 0 : 1);\n      }, 0);\n\n      if (significantChildren == 1) {\n        for (var i = this._messages.length - 1; i >= startIndex; i--) {\n          var ast = this._messages[i].nodes;\n\n          if (!(ast.length == 1 && ast[0] instanceof Text$1)) {\n            this._messages.splice(i, 1);\n\n            break;\n          }\n        }\n      }\n\n      this._msgCountAtSectionStart = undefined;\n    }\n  }, {\n    key: \"_reportError\",\n    value: function _reportError(node, msg) {\n      this._errors.push(new I18nError(node.sourceSpan, msg));\n    }\n  }]);\n\n  return _Visitor$2;\n}();\n\nfunction _isOpeningComment(n) {\n  return !!(n instanceof Comment && n.value && n.value.startsWith('i18n'));\n}\n\nfunction _isClosingComment(n) {\n  return !!(n instanceof Comment && n.value && n.value === '/i18n');\n}\n\nfunction _getI18nAttr(p) {\n  return p.attrs.find(function (attr) {\n    return attr.name === _I18N_ATTR;\n  }) || null;\n}\n\nfunction _parseMessageMeta(i18n) {\n  if (!i18n) return {\n    meaning: '',\n    description: '',\n    id: ''\n  };\n  var idIndex = i18n.indexOf(ID_SEPARATOR);\n  var descIndex = i18n.indexOf(MEANING_SEPARATOR);\n\n  var _ref24 = idIndex > -1 ? [i18n.slice(0, idIndex), i18n.slice(idIndex + 2)] : [i18n, ''],\n      _ref25 = _slicedToArray(_ref24, 2),\n      meaningAndDesc = _ref25[0],\n      id = _ref25[1];\n\n  var _ref26 = descIndex > -1 ? [meaningAndDesc.slice(0, descIndex), meaningAndDesc.slice(descIndex + 1)] : ['', meaningAndDesc],\n      _ref27 = _slicedToArray(_ref26, 2),\n      meaning = _ref27[0],\n      description = _ref27[1];\n\n  return {\n    meaning: meaning,\n    description: description,\n    id: id.trim()\n  };\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar XmlTagDefinition = /*#__PURE__*/function () {\n  function XmlTagDefinition() {\n    _classCallCheck(this, XmlTagDefinition);\n\n    this.closedByParent = false;\n    this.contentType = TagContentType.PARSABLE_DATA;\n    this.isVoid = false;\n    this.ignoreFirstLf = false;\n    this.canSelfClose = true;\n    this.preventNamespaceInheritance = false;\n  }\n\n  _createClass(XmlTagDefinition, [{\n    key: \"requireExtraParent\",\n    value: function requireExtraParent(currentParent) {\n      return false;\n    }\n  }, {\n    key: \"isClosedByChild\",\n    value: function isClosedByChild(name) {\n      return false;\n    }\n  }]);\n\n  return XmlTagDefinition;\n}();\n\nvar _TAG_DEFINITION = new XmlTagDefinition();\n\nfunction getXmlTagDefinition(tagName) {\n  return _TAG_DEFINITION;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar XmlParser = /*#__PURE__*/function (_Parser2) {\n  _inherits(XmlParser, _Parser2);\n\n  var _super99 = _createSuper(XmlParser);\n\n  function XmlParser() {\n    _classCallCheck(this, XmlParser);\n\n    return _super99.call(this, getXmlTagDefinition);\n  }\n\n  _createClass(XmlParser, [{\n    key: \"parse\",\n    value: function parse(source, url, options) {\n      return _get(_getPrototypeOf(XmlParser.prototype), \"parse\", this).call(this, source, url, options);\n    }\n  }]);\n\n  return XmlParser;\n}(Parser);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar _VERSION = '1.2';\nvar _XMLNS = 'urn:oasis:names:tc:xliff:document:1.2'; // TODO(vicb): make this a param (s/_/-/)\n\nvar _DEFAULT_SOURCE_LANG = 'en';\nvar _PLACEHOLDER_TAG$1 = 'x';\nvar _MARKER_TAG = 'mrk';\nvar _FILE_TAG = 'file';\nvar _SOURCE_TAG$1 = 'source';\nvar _SEGMENT_SOURCE_TAG = 'seg-source';\nvar _ALT_TRANS_TAG = 'alt-trans';\nvar _TARGET_TAG = 'target';\nvar _UNIT_TAG = 'trans-unit';\nvar _CONTEXT_GROUP_TAG = 'context-group';\nvar _CONTEXT_TAG = 'context'; // http://docs.oasis-open.org/xliff/v1.2/os/xliff-core.html\n// http://docs.oasis-open.org/xliff/v1.2/xliff-profile-html/xliff-profile-html-1.2.html\n\nvar Xliff = /*#__PURE__*/function (_Serializer2) {\n  _inherits(Xliff, _Serializer2);\n\n  var _super100 = _createSuper(Xliff);\n\n  function Xliff() {\n    _classCallCheck(this, Xliff);\n\n    return _super100.apply(this, arguments);\n  }\n\n  _createClass(Xliff, [{\n    key: \"write\",\n    value: function write(messages, locale) {\n      var visitor = new _WriteVisitor();\n      var transUnits = [];\n      messages.forEach(function (message) {\n        var _transUnit$children;\n\n        var contextTags = [];\n        message.sources.forEach(function (source) {\n          var contextGroupTag = new Tag(_CONTEXT_GROUP_TAG, {\n            purpose: 'location'\n          });\n          contextGroupTag.children.push(new CR(10), new Tag(_CONTEXT_TAG, {\n            'context-type': 'sourcefile'\n          }, [new Text$2(source.filePath)]), new CR(10), new Tag(_CONTEXT_TAG, {\n            'context-type': 'linenumber'\n          }, [new Text$2(\"\".concat(source.startLine))]), new CR(8));\n          contextTags.push(new CR(8), contextGroupTag);\n        });\n        var transUnit = new Tag(_UNIT_TAG, {\n          id: message.id,\n          datatype: 'html'\n        });\n\n        (_transUnit$children = transUnit.children).push.apply(_transUnit$children, [new CR(8), new Tag(_SOURCE_TAG$1, {}, visitor.serialize(message.nodes))].concat(contextTags));\n\n        if (message.description) {\n          transUnit.children.push(new CR(8), new Tag('note', {\n            priority: '1',\n            from: 'description'\n          }, [new Text$2(message.description)]));\n        }\n\n        if (message.meaning) {\n          transUnit.children.push(new CR(8), new Tag('note', {\n            priority: '1',\n            from: 'meaning'\n          }, [new Text$2(message.meaning)]));\n        }\n\n        transUnit.children.push(new CR(6));\n        transUnits.push(new CR(6), transUnit);\n      });\n      var body = new Tag('body', {}, [].concat(transUnits, [new CR(4)]));\n      var file = new Tag('file', {\n        'source-language': locale || _DEFAULT_SOURCE_LANG,\n        datatype: 'plaintext',\n        original: 'ng2.template'\n      }, [new CR(4), body, new CR(2)]);\n      var xliff = new Tag('xliff', {\n        version: _VERSION,\n        xmlns: _XMLNS\n      }, [new CR(2), file, new CR()]);\n      return serialize([new Declaration({\n        version: '1.0',\n        encoding: 'UTF-8'\n      }), new CR(), xliff, new CR()]);\n    }\n  }, {\n    key: \"load\",\n    value: function load(content, url) {\n      // xliff to xml nodes\n      var xliffParser = new XliffParser();\n\n      var _xliffParser$parse = xliffParser.parse(content, url),\n          locale = _xliffParser$parse.locale,\n          msgIdToHtml = _xliffParser$parse.msgIdToHtml,\n          errors = _xliffParser$parse.errors; // xml nodes to i18n nodes\n\n\n      var i18nNodesByMsgId = {};\n      var converter = new XmlToI18n();\n      Object.keys(msgIdToHtml).forEach(function (msgId) {\n        var _converter$convert = converter.convert(msgIdToHtml[msgId], url),\n            i18nNodes = _converter$convert.i18nNodes,\n            e = _converter$convert.errors;\n\n        errors.push.apply(errors, _toConsumableArray(e));\n        i18nNodesByMsgId[msgId] = i18nNodes;\n      });\n\n      if (errors.length) {\n        throw new Error(\"xliff parse errors:\\n\".concat(errors.join('\\n')));\n      }\n\n      return {\n        locale: locale,\n        i18nNodesByMsgId: i18nNodesByMsgId\n      };\n    }\n  }, {\n    key: \"digest\",\n    value: function digest(message) {\n      return _digest2(message);\n    }\n  }]);\n\n  return Xliff;\n}(Serializer);\n\nvar _WriteVisitor = /*#__PURE__*/function () {\n  function _WriteVisitor() {\n    _classCallCheck(this, _WriteVisitor);\n  }\n\n  _createClass(_WriteVisitor, [{\n    key: \"visitText\",\n    value: function visitText(text, context) {\n      return [new Text$2(text.value)];\n    }\n  }, {\n    key: \"visitContainer\",\n    value: function visitContainer(container, context) {\n      var _this203 = this;\n\n      var nodes = [];\n      container.children.forEach(function (node) {\n        return nodes.push.apply(nodes, _toConsumableArray(node.visit(_this203)));\n      });\n      return nodes;\n    }\n  }, {\n    key: \"visitIcu\",\n    value: function visitIcu(icu, context) {\n      var _this204 = this;\n\n      var nodes = [new Text$2(\"{\".concat(icu.expressionPlaceholder, \", \").concat(icu.type, \", \"))];\n      Object.keys(icu.cases).forEach(function (c) {\n        nodes.push.apply(nodes, [new Text$2(\"\".concat(c, \" {\"))].concat(_toConsumableArray(icu.cases[c].visit(_this204)), [new Text$2(\"} \")]));\n      });\n      nodes.push(new Text$2(\"}\"));\n      return nodes;\n    }\n  }, {\n    key: \"visitTagPlaceholder\",\n    value: function visitTagPlaceholder(ph, context) {\n      var ctype = getCtypeForTag(ph.tag);\n\n      if (ph.isVoid) {\n        // void tags have no children nor closing tags\n        return [new Tag(_PLACEHOLDER_TAG$1, {\n          id: ph.startName,\n          ctype: ctype,\n          'equiv-text': \"<\".concat(ph.tag, \"/>\")\n        })];\n      }\n\n      var startTagPh = new Tag(_PLACEHOLDER_TAG$1, {\n        id: ph.startName,\n        ctype: ctype,\n        'equiv-text': \"<\".concat(ph.tag, \">\")\n      });\n      var closeTagPh = new Tag(_PLACEHOLDER_TAG$1, {\n        id: ph.closeName,\n        ctype: ctype,\n        'equiv-text': \"</\".concat(ph.tag, \">\")\n      });\n      return [startTagPh].concat(_toConsumableArray(this.serialize(ph.children)), [closeTagPh]);\n    }\n  }, {\n    key: \"visitPlaceholder\",\n    value: function visitPlaceholder(ph, context) {\n      return [new Tag(_PLACEHOLDER_TAG$1, {\n        id: ph.name,\n        'equiv-text': \"{{\".concat(ph.value, \"}}\")\n      })];\n    }\n  }, {\n    key: \"visitIcuPlaceholder\",\n    value: function visitIcuPlaceholder(ph, context) {\n      var equivText = \"{\".concat(ph.value.expression, \", \").concat(ph.value.type, \", \").concat(Object.keys(ph.value.cases).map(function (value) {\n        return value + ' {...}';\n      }).join(' '), \"}\");\n      return [new Tag(_PLACEHOLDER_TAG$1, {\n        id: ph.name,\n        'equiv-text': equivText\n      })];\n    }\n  }, {\n    key: \"serialize\",\n    value: function serialize(nodes) {\n      var _ref28,\n          _this205 = this;\n\n      return (_ref28 = []).concat.apply(_ref28, _toConsumableArray(nodes.map(function (node) {\n        return node.visit(_this205);\n      })));\n    }\n  }]);\n\n  return _WriteVisitor;\n}(); // TODO(vicb): add error management (structure)\n// Extract messages as xml nodes from the xliff file\n\n\nvar XliffParser = /*#__PURE__*/function () {\n  function XliffParser() {\n    _classCallCheck(this, XliffParser);\n\n    this._locale = null;\n  }\n\n  _createClass(XliffParser, [{\n    key: \"parse\",\n    value: function parse(xliff, url) {\n      this._unitMlString = null;\n      this._msgIdToHtml = {};\n      var xml = new XmlParser().parse(xliff, url);\n      this._errors = xml.errors;\n      visitAll$1(this, xml.rootNodes, null);\n      return {\n        msgIdToHtml: this._msgIdToHtml,\n        errors: this._errors,\n        locale: this._locale\n      };\n    }\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(element, context) {\n      switch (element.name) {\n        case _UNIT_TAG:\n          this._unitMlString = null;\n          var idAttr = element.attrs.find(function (attr) {\n            return attr.name === 'id';\n          });\n\n          if (!idAttr) {\n            this._addError(element, \"<\".concat(_UNIT_TAG, \"> misses the \\\"id\\\" attribute\"));\n          } else {\n            var id = idAttr.value;\n\n            if (this._msgIdToHtml.hasOwnProperty(id)) {\n              this._addError(element, \"Duplicated translations for msg \".concat(id));\n            } else {\n              visitAll$1(this, element.children, null);\n\n              if (typeof this._unitMlString === 'string') {\n                this._msgIdToHtml[id] = this._unitMlString;\n              } else {\n                this._addError(element, \"Message \".concat(id, \" misses a translation\"));\n              }\n            }\n          }\n\n          break;\n        // ignore those tags\n\n        case _SOURCE_TAG$1:\n        case _SEGMENT_SOURCE_TAG:\n        case _ALT_TRANS_TAG:\n          break;\n\n        case _TARGET_TAG:\n          var innerTextStart = element.startSourceSpan.end.offset;\n          var innerTextEnd = element.endSourceSpan.start.offset;\n          var content = element.startSourceSpan.start.file.content;\n          var innerText = content.slice(innerTextStart, innerTextEnd);\n          this._unitMlString = innerText;\n          break;\n\n        case _FILE_TAG:\n          var localeAttr = element.attrs.find(function (attr) {\n            return attr.name === 'target-language';\n          });\n\n          if (localeAttr) {\n            this._locale = localeAttr.value;\n          }\n\n          visitAll$1(this, element.children, null);\n          break;\n\n        default:\n          // TODO(vicb): assert file structure, xliff version\n          // For now only recurse on unhandled nodes\n          visitAll$1(this, element.children, null);\n      }\n    }\n  }, {\n    key: \"visitAttribute\",\n    value: function visitAttribute(attribute, context) {}\n  }, {\n    key: \"visitText\",\n    value: function visitText(text, context) {}\n  }, {\n    key: \"visitComment\",\n    value: function visitComment(comment, context) {}\n  }, {\n    key: \"visitExpansion\",\n    value: function visitExpansion(expansion, context) {}\n  }, {\n    key: \"visitExpansionCase\",\n    value: function visitExpansionCase(expansionCase, context) {}\n  }, {\n    key: \"_addError\",\n    value: function _addError(node, message) {\n      this._errors.push(new I18nError(node.sourceSpan, message));\n    }\n  }]);\n\n  return XliffParser;\n}(); // Convert ml nodes (xliff syntax) to i18n nodes\n\n\nvar XmlToI18n = /*#__PURE__*/function () {\n  function XmlToI18n() {\n    _classCallCheck(this, XmlToI18n);\n  }\n\n  _createClass(XmlToI18n, [{\n    key: \"convert\",\n    value: function convert(message, url) {\n      var _ref29;\n\n      var xmlIcu = new XmlParser().parse(message, url, {\n        tokenizeExpansionForms: true\n      });\n      this._errors = xmlIcu.errors;\n      var i18nNodes = this._errors.length > 0 || xmlIcu.rootNodes.length == 0 ? [] : (_ref29 = []).concat.apply(_ref29, _toConsumableArray(visitAll$1(this, xmlIcu.rootNodes)));\n      return {\n        i18nNodes: i18nNodes,\n        errors: this._errors\n      };\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text, context) {\n      return new Text$1(text.value, text.sourceSpan);\n    }\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(el, context) {\n      if (el.name === _PLACEHOLDER_TAG$1) {\n        var nameAttr = el.attrs.find(function (attr) {\n          return attr.name === 'id';\n        });\n\n        if (nameAttr) {\n          return new Placeholder('', nameAttr.value, el.sourceSpan);\n        }\n\n        this._addError(el, \"<\".concat(_PLACEHOLDER_TAG$1, \"> misses the \\\"id\\\" attribute\"));\n\n        return null;\n      }\n\n      if (el.name === _MARKER_TAG) {\n        var _ref30;\n\n        return (_ref30 = []).concat.apply(_ref30, _toConsumableArray(visitAll$1(this, el.children)));\n      }\n\n      this._addError(el, \"Unexpected tag\");\n\n      return null;\n    }\n  }, {\n    key: \"visitExpansion\",\n    value: function visitExpansion(icu, context) {\n      var caseMap = {};\n      visitAll$1(this, icu.cases).forEach(function (c) {\n        caseMap[c.value] = new Container(c.nodes, icu.sourceSpan);\n      });\n      return new Icu$1(icu.switchValue, icu.type, caseMap, icu.sourceSpan);\n    }\n  }, {\n    key: \"visitExpansionCase\",\n    value: function visitExpansionCase(icuCase, context) {\n      return {\n        value: icuCase.value,\n        nodes: visitAll$1(this, icuCase.expression)\n      };\n    }\n  }, {\n    key: \"visitComment\",\n    value: function visitComment(comment, context) {}\n  }, {\n    key: \"visitAttribute\",\n    value: function visitAttribute(attribute, context) {}\n  }, {\n    key: \"_addError\",\n    value: function _addError(node, message) {\n      this._errors.push(new I18nError(node.sourceSpan, message));\n    }\n  }]);\n\n  return XmlToI18n;\n}();\n\nfunction getCtypeForTag(tag) {\n  switch (tag.toLowerCase()) {\n    case 'br':\n      return 'lb';\n\n    case 'img':\n      return 'image';\n\n    default:\n      return \"x-\".concat(tag);\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar _VERSION$1 = '2.0';\nvar _XMLNS$1 = 'urn:oasis:names:tc:xliff:document:2.0'; // TODO(vicb): make this a param (s/_/-/)\n\nvar _DEFAULT_SOURCE_LANG$1 = 'en';\nvar _PLACEHOLDER_TAG$2 = 'ph';\nvar _PLACEHOLDER_SPANNING_TAG = 'pc';\nvar _MARKER_TAG$1 = 'mrk';\nvar _XLIFF_TAG = 'xliff';\nvar _SOURCE_TAG$2 = 'source';\nvar _TARGET_TAG$1 = 'target';\nvar _UNIT_TAG$1 = 'unit'; // http://docs.oasis-open.org/xliff/xliff-core/v2.0/os/xliff-core-v2.0-os.html\n\nvar Xliff2 = /*#__PURE__*/function (_Serializer3) {\n  _inherits(Xliff2, _Serializer3);\n\n  var _super101 = _createSuper(Xliff2);\n\n  function Xliff2() {\n    _classCallCheck(this, Xliff2);\n\n    return _super101.apply(this, arguments);\n  }\n\n  _createClass(Xliff2, [{\n    key: \"write\",\n    value: function write(messages, locale) {\n      var visitor = new _WriteVisitor$1();\n      var units = [];\n      messages.forEach(function (message) {\n        var unit = new Tag(_UNIT_TAG$1, {\n          id: message.id\n        });\n        var notes = new Tag('notes');\n\n        if (message.description || message.meaning) {\n          if (message.description) {\n            notes.children.push(new CR(8), new Tag('note', {\n              category: 'description'\n            }, [new Text$2(message.description)]));\n          }\n\n          if (message.meaning) {\n            notes.children.push(new CR(8), new Tag('note', {\n              category: 'meaning'\n            }, [new Text$2(message.meaning)]));\n          }\n        }\n\n        message.sources.forEach(function (source) {\n          notes.children.push(new CR(8), new Tag('note', {\n            category: 'location'\n          }, [new Text$2(\"\".concat(source.filePath, \":\").concat(source.startLine).concat(source.endLine !== source.startLine ? ',' + source.endLine : ''))]));\n        });\n        notes.children.push(new CR(6));\n        unit.children.push(new CR(6), notes);\n        var segment = new Tag('segment');\n        segment.children.push(new CR(8), new Tag(_SOURCE_TAG$2, {}, visitor.serialize(message.nodes)), new CR(6));\n        unit.children.push(new CR(6), segment, new CR(4));\n        units.push(new CR(4), unit);\n      });\n      var file = new Tag('file', {\n        'original': 'ng.template',\n        id: 'ngi18n'\n      }, [].concat(units, [new CR(2)]));\n      var xliff = new Tag(_XLIFF_TAG, {\n        version: _VERSION$1,\n        xmlns: _XMLNS$1,\n        srcLang: locale || _DEFAULT_SOURCE_LANG$1\n      }, [new CR(2), file, new CR()]);\n      return serialize([new Declaration({\n        version: '1.0',\n        encoding: 'UTF-8'\n      }), new CR(), xliff, new CR()]);\n    }\n  }, {\n    key: \"load\",\n    value: function load(content, url) {\n      // xliff to xml nodes\n      var xliff2Parser = new Xliff2Parser();\n\n      var _xliff2Parser$parse = xliff2Parser.parse(content, url),\n          locale = _xliff2Parser$parse.locale,\n          msgIdToHtml = _xliff2Parser$parse.msgIdToHtml,\n          errors = _xliff2Parser$parse.errors; // xml nodes to i18n nodes\n\n\n      var i18nNodesByMsgId = {};\n      var converter = new XmlToI18n$1();\n      Object.keys(msgIdToHtml).forEach(function (msgId) {\n        var _converter$convert2 = converter.convert(msgIdToHtml[msgId], url),\n            i18nNodes = _converter$convert2.i18nNodes,\n            e = _converter$convert2.errors;\n\n        errors.push.apply(errors, _toConsumableArray(e));\n        i18nNodesByMsgId[msgId] = i18nNodes;\n      });\n\n      if (errors.length) {\n        throw new Error(\"xliff2 parse errors:\\n\".concat(errors.join('\\n')));\n      }\n\n      return {\n        locale: locale,\n        i18nNodesByMsgId: i18nNodesByMsgId\n      };\n    }\n  }, {\n    key: \"digest\",\n    value: function digest(message) {\n      return decimalDigest(message);\n    }\n  }]);\n\n  return Xliff2;\n}(Serializer);\n\nvar _WriteVisitor$1 = /*#__PURE__*/function () {\n  function _WriteVisitor$1() {\n    _classCallCheck(this, _WriteVisitor$1);\n  }\n\n  _createClass(_WriteVisitor$1, [{\n    key: \"visitText\",\n    value: function visitText(text, context) {\n      return [new Text$2(text.value)];\n    }\n  }, {\n    key: \"visitContainer\",\n    value: function visitContainer(container, context) {\n      var _this206 = this;\n\n      var nodes = [];\n      container.children.forEach(function (node) {\n        return nodes.push.apply(nodes, _toConsumableArray(node.visit(_this206)));\n      });\n      return nodes;\n    }\n  }, {\n    key: \"visitIcu\",\n    value: function visitIcu(icu, context) {\n      var _this207 = this;\n\n      var nodes = [new Text$2(\"{\".concat(icu.expressionPlaceholder, \", \").concat(icu.type, \", \"))];\n      Object.keys(icu.cases).forEach(function (c) {\n        nodes.push.apply(nodes, [new Text$2(\"\".concat(c, \" {\"))].concat(_toConsumableArray(icu.cases[c].visit(_this207)), [new Text$2(\"} \")]));\n      });\n      nodes.push(new Text$2(\"}\"));\n      return nodes;\n    }\n  }, {\n    key: \"visitTagPlaceholder\",\n    value: function visitTagPlaceholder(ph, context) {\n      var _ref31,\n          _this208 = this;\n\n      var type = getTypeForTag(ph.tag);\n\n      if (ph.isVoid) {\n        var tagPh = new Tag(_PLACEHOLDER_TAG$2, {\n          id: (this._nextPlaceholderId++).toString(),\n          equiv: ph.startName,\n          type: type,\n          disp: \"<\".concat(ph.tag, \"/>\")\n        });\n        return [tagPh];\n      }\n\n      var tagPc = new Tag(_PLACEHOLDER_SPANNING_TAG, {\n        id: (this._nextPlaceholderId++).toString(),\n        equivStart: ph.startName,\n        equivEnd: ph.closeName,\n        type: type,\n        dispStart: \"<\".concat(ph.tag, \">\"),\n        dispEnd: \"</\".concat(ph.tag, \">\")\n      });\n\n      var nodes = (_ref31 = []).concat.apply(_ref31, _toConsumableArray(ph.children.map(function (node) {\n        return node.visit(_this208);\n      })));\n\n      if (nodes.length) {\n        nodes.forEach(function (node) {\n          return tagPc.children.push(node);\n        });\n      } else {\n        tagPc.children.push(new Text$2(''));\n      }\n\n      return [tagPc];\n    }\n  }, {\n    key: \"visitPlaceholder\",\n    value: function visitPlaceholder(ph, context) {\n      var idStr = (this._nextPlaceholderId++).toString();\n      return [new Tag(_PLACEHOLDER_TAG$2, {\n        id: idStr,\n        equiv: ph.name,\n        disp: \"{{\".concat(ph.value, \"}}\")\n      })];\n    }\n  }, {\n    key: \"visitIcuPlaceholder\",\n    value: function visitIcuPlaceholder(ph, context) {\n      var cases = Object.keys(ph.value.cases).map(function (value) {\n        return value + ' {...}';\n      }).join(' ');\n      var idStr = (this._nextPlaceholderId++).toString();\n      return [new Tag(_PLACEHOLDER_TAG$2, {\n        id: idStr,\n        equiv: ph.name,\n        disp: \"{\".concat(ph.value.expression, \", \").concat(ph.value.type, \", \").concat(cases, \"}\")\n      })];\n    }\n  }, {\n    key: \"serialize\",\n    value: function serialize(nodes) {\n      var _ref32,\n          _this209 = this;\n\n      this._nextPlaceholderId = 0;\n      return (_ref32 = []).concat.apply(_ref32, _toConsumableArray(nodes.map(function (node) {\n        return node.visit(_this209);\n      })));\n    }\n  }]);\n\n  return _WriteVisitor$1;\n}(); // Extract messages as xml nodes from the xliff file\n\n\nvar Xliff2Parser = /*#__PURE__*/function () {\n  function Xliff2Parser() {\n    _classCallCheck(this, Xliff2Parser);\n\n    this._locale = null;\n  }\n\n  _createClass(Xliff2Parser, [{\n    key: \"parse\",\n    value: function parse(xliff, url) {\n      this._unitMlString = null;\n      this._msgIdToHtml = {};\n      var xml = new XmlParser().parse(xliff, url);\n      this._errors = xml.errors;\n      visitAll$1(this, xml.rootNodes, null);\n      return {\n        msgIdToHtml: this._msgIdToHtml,\n        errors: this._errors,\n        locale: this._locale\n      };\n    }\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(element, context) {\n      switch (element.name) {\n        case _UNIT_TAG$1:\n          this._unitMlString = null;\n          var idAttr = element.attrs.find(function (attr) {\n            return attr.name === 'id';\n          });\n\n          if (!idAttr) {\n            this._addError(element, \"<\".concat(_UNIT_TAG$1, \"> misses the \\\"id\\\" attribute\"));\n          } else {\n            var id = idAttr.value;\n\n            if (this._msgIdToHtml.hasOwnProperty(id)) {\n              this._addError(element, \"Duplicated translations for msg \".concat(id));\n            } else {\n              visitAll$1(this, element.children, null);\n\n              if (typeof this._unitMlString === 'string') {\n                this._msgIdToHtml[id] = this._unitMlString;\n              } else {\n                this._addError(element, \"Message \".concat(id, \" misses a translation\"));\n              }\n            }\n          }\n\n          break;\n\n        case _SOURCE_TAG$2:\n          // ignore source message\n          break;\n\n        case _TARGET_TAG$1:\n          var innerTextStart = element.startSourceSpan.end.offset;\n          var innerTextEnd = element.endSourceSpan.start.offset;\n          var content = element.startSourceSpan.start.file.content;\n          var innerText = content.slice(innerTextStart, innerTextEnd);\n          this._unitMlString = innerText;\n          break;\n\n        case _XLIFF_TAG:\n          var localeAttr = element.attrs.find(function (attr) {\n            return attr.name === 'trgLang';\n          });\n\n          if (localeAttr) {\n            this._locale = localeAttr.value;\n          }\n\n          var versionAttr = element.attrs.find(function (attr) {\n            return attr.name === 'version';\n          });\n\n          if (versionAttr) {\n            var version = versionAttr.value;\n\n            if (version !== '2.0') {\n              this._addError(element, \"The XLIFF file version \".concat(version, \" is not compatible with XLIFF 2.0 serializer\"));\n            } else {\n              visitAll$1(this, element.children, null);\n            }\n          }\n\n          break;\n\n        default:\n          visitAll$1(this, element.children, null);\n      }\n    }\n  }, {\n    key: \"visitAttribute\",\n    value: function visitAttribute(attribute, context) {}\n  }, {\n    key: \"visitText\",\n    value: function visitText(text, context) {}\n  }, {\n    key: \"visitComment\",\n    value: function visitComment(comment, context) {}\n  }, {\n    key: \"visitExpansion\",\n    value: function visitExpansion(expansion, context) {}\n  }, {\n    key: \"visitExpansionCase\",\n    value: function visitExpansionCase(expansionCase, context) {}\n  }, {\n    key: \"_addError\",\n    value: function _addError(node, message) {\n      this._errors.push(new I18nError(node.sourceSpan, message));\n    }\n  }]);\n\n  return Xliff2Parser;\n}(); // Convert ml nodes (xliff syntax) to i18n nodes\n\n\nvar XmlToI18n$1 = /*#__PURE__*/function () {\n  function XmlToI18n$1() {\n    _classCallCheck(this, XmlToI18n$1);\n  }\n\n  _createClass(XmlToI18n$1, [{\n    key: \"convert\",\n    value: function convert(message, url) {\n      var _ref33;\n\n      var xmlIcu = new XmlParser().parse(message, url, {\n        tokenizeExpansionForms: true\n      });\n      this._errors = xmlIcu.errors;\n      var i18nNodes = this._errors.length > 0 || xmlIcu.rootNodes.length == 0 ? [] : (_ref33 = []).concat.apply(_ref33, _toConsumableArray(visitAll$1(this, xmlIcu.rootNodes)));\n      return {\n        i18nNodes: i18nNodes,\n        errors: this._errors\n      };\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text, context) {\n      return new Text$1(text.value, text.sourceSpan);\n    }\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(el, context) {\n      var _this210 = this,\n          _ref34;\n\n      switch (el.name) {\n        case _PLACEHOLDER_TAG$2:\n          var nameAttr = el.attrs.find(function (attr) {\n            return attr.name === 'equiv';\n          });\n\n          if (nameAttr) {\n            return [new Placeholder('', nameAttr.value, el.sourceSpan)];\n          }\n\n          this._addError(el, \"<\".concat(_PLACEHOLDER_TAG$2, \"> misses the \\\"equiv\\\" attribute\"));\n\n          break;\n\n        case _PLACEHOLDER_SPANNING_TAG:\n          var startAttr = el.attrs.find(function (attr) {\n            return attr.name === 'equivStart';\n          });\n          var endAttr = el.attrs.find(function (attr) {\n            return attr.name === 'equivEnd';\n          });\n\n          if (!startAttr) {\n            this._addError(el, \"<\".concat(_PLACEHOLDER_TAG$2, \"> misses the \\\"equivStart\\\" attribute\"));\n          } else if (!endAttr) {\n            this._addError(el, \"<\".concat(_PLACEHOLDER_TAG$2, \"> misses the \\\"equivEnd\\\" attribute\"));\n          } else {\n            var startId = startAttr.value;\n            var endId = endAttr.value;\n            var nodes = [];\n            return nodes.concat.apply(nodes, [new Placeholder('', startId, el.sourceSpan)].concat(_toConsumableArray(el.children.map(function (node) {\n              return node.visit(_this210, null);\n            })), [new Placeholder('', endId, el.sourceSpan)]));\n          }\n\n          break;\n\n        case _MARKER_TAG$1:\n          return (_ref34 = []).concat.apply(_ref34, _toConsumableArray(visitAll$1(this, el.children)));\n\n        default:\n          this._addError(el, \"Unexpected tag\");\n\n      }\n\n      return null;\n    }\n  }, {\n    key: \"visitExpansion\",\n    value: function visitExpansion(icu, context) {\n      var caseMap = {};\n      visitAll$1(this, icu.cases).forEach(function (c) {\n        caseMap[c.value] = new Container(c.nodes, icu.sourceSpan);\n      });\n      return new Icu$1(icu.switchValue, icu.type, caseMap, icu.sourceSpan);\n    }\n  }, {\n    key: \"visitExpansionCase\",\n    value: function visitExpansionCase(icuCase, context) {\n      var _ref35;\n\n      return {\n        value: icuCase.value,\n        nodes: (_ref35 = []).concat.apply(_ref35, _toConsumableArray(visitAll$1(this, icuCase.expression)))\n      };\n    }\n  }, {\n    key: \"visitComment\",\n    value: function visitComment(comment, context) {}\n  }, {\n    key: \"visitAttribute\",\n    value: function visitAttribute(attribute, context) {}\n  }, {\n    key: \"_addError\",\n    value: function _addError(node, message) {\n      this._errors.push(new I18nError(node.sourceSpan, message));\n    }\n  }]);\n\n  return XmlToI18n$1;\n}();\n\nfunction getTypeForTag(tag) {\n  switch (tag.toLowerCase()) {\n    case 'br':\n    case 'b':\n    case 'i':\n    case 'u':\n      return 'fmt';\n\n    case 'img':\n      return 'image';\n\n    case 'a':\n      return 'link';\n\n    default:\n      return 'other';\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar _TRANSLATIONS_TAG = 'translationbundle';\nvar _TRANSLATION_TAG = 'translation';\nvar _PLACEHOLDER_TAG$3 = 'ph';\n\nvar Xtb = /*#__PURE__*/function (_Serializer4) {\n  _inherits(Xtb, _Serializer4);\n\n  var _super102 = _createSuper(Xtb);\n\n  function Xtb() {\n    _classCallCheck(this, Xtb);\n\n    return _super102.apply(this, arguments);\n  }\n\n  _createClass(Xtb, [{\n    key: \"write\",\n    value: function write(messages, locale) {\n      throw new Error('Unsupported');\n    }\n  }, {\n    key: \"load\",\n    value: function load(content, url) {\n      // xtb to xml nodes\n      var xtbParser = new XtbParser();\n\n      var _xtbParser$parse = xtbParser.parse(content, url),\n          locale = _xtbParser$parse.locale,\n          msgIdToHtml = _xtbParser$parse.msgIdToHtml,\n          errors = _xtbParser$parse.errors; // xml nodes to i18n nodes\n\n\n      var i18nNodesByMsgId = {};\n      var converter = new XmlToI18n$2(); // Because we should be able to load xtb files that rely on features not supported by angular,\n      // we need to delay the conversion of html to i18n nodes so that non angular messages are not\n      // converted\n\n      Object.keys(msgIdToHtml).forEach(function (msgId) {\n        var valueFn = function valueFn() {\n          var _converter$convert3 = converter.convert(msgIdToHtml[msgId], url),\n              i18nNodes = _converter$convert3.i18nNodes,\n              errors = _converter$convert3.errors;\n\n          if (errors.length) {\n            throw new Error(\"xtb parse errors:\\n\".concat(errors.join('\\n')));\n          }\n\n          return i18nNodes;\n        };\n\n        createLazyProperty(i18nNodesByMsgId, msgId, valueFn);\n      });\n\n      if (errors.length) {\n        throw new Error(\"xtb parse errors:\\n\".concat(errors.join('\\n')));\n      }\n\n      return {\n        locale: locale,\n        i18nNodesByMsgId: i18nNodesByMsgId\n      };\n    }\n  }, {\n    key: \"digest\",\n    value: function digest(message) {\n      return digest$1(message);\n    }\n  }, {\n    key: \"createNameMapper\",\n    value: function createNameMapper(message) {\n      return new SimplePlaceholderMapper(message, toPublicName);\n    }\n  }]);\n\n  return Xtb;\n}(Serializer);\n\nfunction createLazyProperty(messages, id, valueFn) {\n  Object.defineProperty(messages, id, {\n    configurable: true,\n    enumerable: true,\n    get: function get() {\n      var value = valueFn();\n      Object.defineProperty(messages, id, {\n        enumerable: true,\n        value: value\n      });\n      return value;\n    },\n    set: function set(_) {\n      throw new Error('Could not overwrite an XTB translation');\n    }\n  });\n} // Extract messages as xml nodes from the xtb file\n\n\nvar XtbParser = /*#__PURE__*/function () {\n  function XtbParser() {\n    _classCallCheck(this, XtbParser);\n\n    this._locale = null;\n  }\n\n  _createClass(XtbParser, [{\n    key: \"parse\",\n    value: function parse(xtb, url) {\n      this._bundleDepth = 0;\n      this._msgIdToHtml = {}; // We can not parse the ICU messages at this point as some messages might not originate\n      // from Angular that could not be lex'd.\n\n      var xml = new XmlParser().parse(xtb, url);\n      this._errors = xml.errors;\n      visitAll$1(this, xml.rootNodes);\n      return {\n        msgIdToHtml: this._msgIdToHtml,\n        errors: this._errors,\n        locale: this._locale\n      };\n    }\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(element, context) {\n      switch (element.name) {\n        case _TRANSLATIONS_TAG:\n          this._bundleDepth++;\n\n          if (this._bundleDepth > 1) {\n            this._addError(element, \"<\".concat(_TRANSLATIONS_TAG, \"> elements can not be nested\"));\n          }\n\n          var langAttr = element.attrs.find(function (attr) {\n            return attr.name === 'lang';\n          });\n\n          if (langAttr) {\n            this._locale = langAttr.value;\n          }\n\n          visitAll$1(this, element.children, null);\n          this._bundleDepth--;\n          break;\n\n        case _TRANSLATION_TAG:\n          var idAttr = element.attrs.find(function (attr) {\n            return attr.name === 'id';\n          });\n\n          if (!idAttr) {\n            this._addError(element, \"<\".concat(_TRANSLATION_TAG, \"> misses the \\\"id\\\" attribute\"));\n          } else {\n            var id = idAttr.value;\n\n            if (this._msgIdToHtml.hasOwnProperty(id)) {\n              this._addError(element, \"Duplicated translations for msg \".concat(id));\n            } else {\n              var innerTextStart = element.startSourceSpan.end.offset;\n              var innerTextEnd = element.endSourceSpan.start.offset;\n              var content = element.startSourceSpan.start.file.content;\n              var innerText = content.slice(innerTextStart, innerTextEnd);\n              this._msgIdToHtml[id] = innerText;\n            }\n          }\n\n          break;\n\n        default:\n          this._addError(element, 'Unexpected tag');\n\n      }\n    }\n  }, {\n    key: \"visitAttribute\",\n    value: function visitAttribute(attribute, context) {}\n  }, {\n    key: \"visitText\",\n    value: function visitText(text, context) {}\n  }, {\n    key: \"visitComment\",\n    value: function visitComment(comment, context) {}\n  }, {\n    key: \"visitExpansion\",\n    value: function visitExpansion(expansion, context) {}\n  }, {\n    key: \"visitExpansionCase\",\n    value: function visitExpansionCase(expansionCase, context) {}\n  }, {\n    key: \"_addError\",\n    value: function _addError(node, message) {\n      this._errors.push(new I18nError(node.sourceSpan, message));\n    }\n  }]);\n\n  return XtbParser;\n}(); // Convert ml nodes (xtb syntax) to i18n nodes\n\n\nvar XmlToI18n$2 = /*#__PURE__*/function () {\n  function XmlToI18n$2() {\n    _classCallCheck(this, XmlToI18n$2);\n  }\n\n  _createClass(XmlToI18n$2, [{\n    key: \"convert\",\n    value: function convert(message, url) {\n      var xmlIcu = new XmlParser().parse(message, url, {\n        tokenizeExpansionForms: true\n      });\n      this._errors = xmlIcu.errors;\n      var i18nNodes = this._errors.length > 0 || xmlIcu.rootNodes.length == 0 ? [] : visitAll$1(this, xmlIcu.rootNodes);\n      return {\n        i18nNodes: i18nNodes,\n        errors: this._errors\n      };\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text, context) {\n      return new Text$1(text.value, text.sourceSpan);\n    }\n  }, {\n    key: \"visitExpansion\",\n    value: function visitExpansion(icu, context) {\n      var caseMap = {};\n      visitAll$1(this, icu.cases).forEach(function (c) {\n        caseMap[c.value] = new Container(c.nodes, icu.sourceSpan);\n      });\n      return new Icu$1(icu.switchValue, icu.type, caseMap, icu.sourceSpan);\n    }\n  }, {\n    key: \"visitExpansionCase\",\n    value: function visitExpansionCase(icuCase, context) {\n      return {\n        value: icuCase.value,\n        nodes: visitAll$1(this, icuCase.expression)\n      };\n    }\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(el, context) {\n      if (el.name === _PLACEHOLDER_TAG$3) {\n        var nameAttr = el.attrs.find(function (attr) {\n          return attr.name === 'name';\n        });\n\n        if (nameAttr) {\n          return new Placeholder('', nameAttr.value, el.sourceSpan);\n        }\n\n        this._addError(el, \"<\".concat(_PLACEHOLDER_TAG$3, \"> misses the \\\"name\\\" attribute\"));\n      } else {\n        this._addError(el, \"Unexpected tag\");\n      }\n\n      return null;\n    }\n  }, {\n    key: \"visitComment\",\n    value: function visitComment(comment, context) {}\n  }, {\n    key: \"visitAttribute\",\n    value: function visitAttribute(attribute, context) {}\n  }, {\n    key: \"_addError\",\n    value: function _addError(node, message) {\n      this._errors.push(new I18nError(node.sourceSpan, message));\n    }\n  }]);\n\n  return XmlToI18n$2;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A container for translated messages\n */\n\n\nvar TranslationBundle = /*#__PURE__*/function () {\n  function TranslationBundle() {\n    var _i18nNodesByMsgId = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n    var locale = arguments.length > 1 ? arguments[1] : undefined;\n    var digest = arguments.length > 2 ? arguments[2] : undefined;\n    var mapperFactory = arguments.length > 3 ? arguments[3] : undefined;\n    var missingTranslationStrategy = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : MissingTranslationStrategy.Warning;\n    var console = arguments.length > 5 ? arguments[5] : undefined;\n\n    _classCallCheck(this, TranslationBundle);\n\n    this._i18nNodesByMsgId = _i18nNodesByMsgId;\n    this.digest = digest;\n    this.mapperFactory = mapperFactory;\n    this._i18nToHtml = new I18nToHtmlVisitor(_i18nNodesByMsgId, locale, digest, mapperFactory, missingTranslationStrategy, console);\n  } // Creates a `TranslationBundle` by parsing the given `content` with the `serializer`.\n\n\n  _createClass(TranslationBundle, [{\n    key: \"get\",\n    value: // Returns the translation as HTML nodes from the given source message.\n    function get(srcMsg) {\n      var html = this._i18nToHtml.convert(srcMsg);\n\n      if (html.errors.length) {\n        throw new Error(html.errors.join('\\n'));\n      }\n\n      return html.nodes;\n    }\n  }, {\n    key: \"has\",\n    value: function has(srcMsg) {\n      return this.digest(srcMsg) in this._i18nNodesByMsgId;\n    }\n  }], [{\n    key: \"load\",\n    value: function load(content, url, serializer, missingTranslationStrategy, console) {\n      var _serializer$load = serializer.load(content, url),\n          locale = _serializer$load.locale,\n          i18nNodesByMsgId = _serializer$load.i18nNodesByMsgId;\n\n      var digestFn = function digestFn(m) {\n        return serializer.digest(m);\n      };\n\n      var mapperFactory = function mapperFactory(m) {\n        return serializer.createNameMapper(m);\n      };\n\n      return new TranslationBundle(i18nNodesByMsgId, locale, digestFn, mapperFactory, missingTranslationStrategy, console);\n    }\n  }]);\n\n  return TranslationBundle;\n}();\n\nvar I18nToHtmlVisitor = /*#__PURE__*/function () {\n  function I18nToHtmlVisitor() {\n    var _i18nNodesByMsgId = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n    var _locale = arguments.length > 1 ? arguments[1] : undefined;\n\n    var _digest = arguments.length > 2 ? arguments[2] : undefined;\n\n    var _mapperFactory = arguments.length > 3 ? arguments[3] : undefined;\n\n    var _missingTranslationStrategy = arguments.length > 4 ? arguments[4] : undefined;\n\n    var _console = arguments.length > 5 ? arguments[5] : undefined;\n\n    _classCallCheck(this, I18nToHtmlVisitor);\n\n    this._i18nNodesByMsgId = _i18nNodesByMsgId;\n    this._locale = _locale;\n    this._digest = _digest;\n    this._mapperFactory = _mapperFactory;\n    this._missingTranslationStrategy = _missingTranslationStrategy;\n    this._console = _console;\n    this._contextStack = [];\n    this._errors = [];\n  }\n\n  _createClass(I18nToHtmlVisitor, [{\n    key: \"convert\",\n    value: function convert(srcMsg) {\n      this._contextStack.length = 0;\n      this._errors.length = 0; // i18n to text\n\n      var text = this._convertToText(srcMsg); // text to html\n\n\n      var url = srcMsg.nodes[0].sourceSpan.start.file.url;\n      var html = new HtmlParser().parse(text, url, {\n        tokenizeExpansionForms: true\n      });\n      return {\n        nodes: html.rootNodes,\n        errors: [].concat(_toConsumableArray(this._errors), _toConsumableArray(html.errors))\n      };\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(text, context) {\n      // `convert()` uses an `HtmlParser` to return `html.Node`s\n      // we should then make sure that any special characters are escaped\n      return escapeXml(text.value);\n    }\n  }, {\n    key: \"visitContainer\",\n    value: function visitContainer(container, context) {\n      var _this211 = this;\n\n      return container.children.map(function (n) {\n        return n.visit(_this211);\n      }).join('');\n    }\n  }, {\n    key: \"visitIcu\",\n    value: function visitIcu(icu, context) {\n      var _this212 = this;\n\n      var cases = Object.keys(icu.cases).map(function (k) {\n        return \"\".concat(k, \" {\").concat(icu.cases[k].visit(_this212), \"}\");\n      }); // TODO(vicb): Once all format switch to using expression placeholders\n      // we should throw when the placeholder is not in the source message\n\n      var exp = this._srcMsg.placeholders.hasOwnProperty(icu.expression) ? this._srcMsg.placeholders[icu.expression].text : icu.expression;\n      return \"{\".concat(exp, \", \").concat(icu.type, \", \").concat(cases.join(' '), \"}\");\n    }\n  }, {\n    key: \"visitPlaceholder\",\n    value: function visitPlaceholder(ph, context) {\n      var phName = this._mapper(ph.name);\n\n      if (this._srcMsg.placeholders.hasOwnProperty(phName)) {\n        return this._srcMsg.placeholders[phName].text;\n      }\n\n      if (this._srcMsg.placeholderToMessage.hasOwnProperty(phName)) {\n        return this._convertToText(this._srcMsg.placeholderToMessage[phName]);\n      }\n\n      this._addError(ph, \"Unknown placeholder \\\"\".concat(ph.name, \"\\\"\"));\n\n      return '';\n    } // Loaded message contains only placeholders (vs tag and icu placeholders).\n    // However when a translation can not be found, we need to serialize the source message\n    // which can contain tag placeholders\n\n  }, {\n    key: \"visitTagPlaceholder\",\n    value: function visitTagPlaceholder(ph, context) {\n      var _this213 = this;\n\n      var tag = \"\".concat(ph.tag);\n      var attrs = Object.keys(ph.attrs).map(function (name) {\n        return \"\".concat(name, \"=\\\"\").concat(ph.attrs[name], \"\\\"\");\n      }).join(' ');\n\n      if (ph.isVoid) {\n        return \"<\".concat(tag, \" \").concat(attrs, \"/>\");\n      }\n\n      var children = ph.children.map(function (c) {\n        return c.visit(_this213);\n      }).join('');\n      return \"<\".concat(tag, \" \").concat(attrs, \">\").concat(children, \"</\").concat(tag, \">\");\n    } // Loaded message contains only placeholders (vs tag and icu placeholders).\n    // However when a translation can not be found, we need to serialize the source message\n    // which can contain tag placeholders\n\n  }, {\n    key: \"visitIcuPlaceholder\",\n    value: function visitIcuPlaceholder(ph, context) {\n      // An ICU placeholder references the source message to be serialized\n      return this._convertToText(this._srcMsg.placeholderToMessage[ph.name]);\n    }\n    /**\n     * Convert a source message to a translated text string:\n     * - text nodes are replaced with their translation,\n     * - placeholders are replaced with their content,\n     * - ICU nodes are converted to ICU expressions.\n     */\n\n  }, {\n    key: \"_convertToText\",\n    value: function _convertToText(srcMsg) {\n      var _this214 = this;\n\n      var id = this._digest(srcMsg);\n\n      var mapper = this._mapperFactory ? this._mapperFactory(srcMsg) : null;\n      var nodes;\n\n      this._contextStack.push({\n        msg: this._srcMsg,\n        mapper: this._mapper\n      });\n\n      this._srcMsg = srcMsg;\n\n      if (this._i18nNodesByMsgId.hasOwnProperty(id)) {\n        // When there is a translation use its nodes as the source\n        // And create a mapper to convert serialized placeholder names to internal names\n        nodes = this._i18nNodesByMsgId[id];\n\n        this._mapper = function (name) {\n          return mapper ? mapper.toInternalName(name) : name;\n        };\n      } else {\n        // When no translation has been found\n        // - report an error / a warning / nothing,\n        // - use the nodes from the original message\n        // - placeholders are already internal and need no mapper\n        if (this._missingTranslationStrategy === MissingTranslationStrategy.Error) {\n          var ctx = this._locale ? \" for locale \\\"\".concat(this._locale, \"\\\"\") : '';\n\n          this._addError(srcMsg.nodes[0], \"Missing translation for message \\\"\".concat(id, \"\\\"\").concat(ctx));\n        } else if (this._console && this._missingTranslationStrategy === MissingTranslationStrategy.Warning) {\n          var _ctx2 = this._locale ? \" for locale \\\"\".concat(this._locale, \"\\\"\") : '';\n\n          this._console.warn(\"Missing translation for message \\\"\".concat(id, \"\\\"\").concat(_ctx2));\n        }\n\n        nodes = srcMsg.nodes;\n\n        this._mapper = function (name) {\n          return name;\n        };\n      }\n\n      var text = nodes.map(function (node) {\n        return node.visit(_this214);\n      }).join('');\n\n      var context = this._contextStack.pop();\n\n      this._srcMsg = context.msg;\n      this._mapper = context.mapper;\n      return text;\n    }\n  }, {\n    key: \"_addError\",\n    value: function _addError(el, msg) {\n      this._errors.push(new I18nError(el.sourceSpan, msg));\n    }\n  }]);\n\n  return I18nToHtmlVisitor;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar I18NHtmlParser = /*#__PURE__*/function () {\n  function I18NHtmlParser(_htmlParser, translations, translationsFormat) {\n    var missingTranslation = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : MissingTranslationStrategy.Warning;\n    var console = arguments.length > 4 ? arguments[4] : undefined;\n\n    _classCallCheck(this, I18NHtmlParser);\n\n    this._htmlParser = _htmlParser;\n\n    if (translations) {\n      var _serializer = createSerializer(translationsFormat);\n\n      this._translationBundle = TranslationBundle.load(translations, 'i18n', _serializer, missingTranslation, console);\n    } else {\n      this._translationBundle = new TranslationBundle({}, null, _digest2, undefined, missingTranslation, console);\n    }\n  }\n\n  _createClass(I18NHtmlParser, [{\n    key: \"parse\",\n    value: function parse(source, url) {\n      var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n      var interpolationConfig = options.interpolationConfig || DEFAULT_INTERPOLATION_CONFIG;\n\n      var parseResult = this._htmlParser.parse(source, url, Object.assign({\n        interpolationConfig: interpolationConfig\n      }, options));\n\n      if (parseResult.errors.length) {\n        return new ParseTreeResult(parseResult.rootNodes, parseResult.errors);\n      }\n\n      return mergeTranslations(parseResult.rootNodes, this._translationBundle, interpolationConfig, [], {});\n    }\n  }]);\n\n  return I18NHtmlParser;\n}();\n\nfunction createSerializer(format) {\n  format = (format || 'xlf').toLowerCase();\n\n  switch (format) {\n    case 'xmb':\n      return new Xmb();\n\n    case 'xtb':\n      return new Xtb();\n\n    case 'xliff2':\n    case 'xlf2':\n      return new Xliff2();\n\n    case 'xliff':\n    case 'xlf':\n    default:\n      return new Xliff();\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar QUOTED_KEYS = '$quoted$';\n\nfunction convertValueToOutputAst(ctx, value) {\n  var type = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;\n  return visitValue(value, new _ValueOutputAstTransformer(ctx), type);\n}\n\nvar _ValueOutputAstTransformer = /*#__PURE__*/function () {\n  function _ValueOutputAstTransformer(ctx) {\n    _classCallCheck(this, _ValueOutputAstTransformer);\n\n    this.ctx = ctx;\n  }\n\n  _createClass(_ValueOutputAstTransformer, [{\n    key: \"visitArray\",\n    value: function visitArray(arr, type) {\n      var values = []; // Note Array.map() must not be used to convert the values because it will\n      // skip over empty elements in arrays constructed using `new Array(length)`,\n      // resulting in `undefined` elements. This breaks the type guarantee that\n      // all values in `o.LiteralArrayExpr` are of type `o.Expression`.\n      // See test case in `value_util_spec.ts`.\n\n      for (var i = 0; i < arr.length; ++i) {\n        values.push(visitValue(arr[i], this, null\n        /* context */\n        ));\n      }\n\n      return literalArr(values, type);\n    }\n  }, {\n    key: \"visitStringMap\",\n    value: function visitStringMap(map, type) {\n      var _this215 = this;\n\n      var entries = [];\n      var quotedSet = new Set(map && map[QUOTED_KEYS]);\n      Object.keys(map).forEach(function (key) {\n        entries.push(new LiteralMapEntry(key, visitValue(map[key], _this215, null), quotedSet.has(key)));\n      });\n      return new LiteralMapExpr(entries, type);\n    }\n  }, {\n    key: \"visitPrimitive\",\n    value: function visitPrimitive(value, type) {\n      return literal(value, type);\n    }\n  }, {\n    key: \"visitOther\",\n    value: function visitOther(value, type) {\n      if (value instanceof Expression) {\n        return value;\n      } else {\n        return this.ctx.importExpr(value);\n      }\n    }\n  }]);\n\n  return _ValueOutputAstTransformer;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction mapEntry$1(key, value) {\n  return {\n    key: key,\n    value: value,\n    quoted: false\n  };\n}\n\nvar InjectableCompiler = /*#__PURE__*/function () {\n  function InjectableCompiler(reflector, alwaysGenerateDef) {\n    _classCallCheck(this, InjectableCompiler);\n\n    this.reflector = reflector;\n    this.alwaysGenerateDef = alwaysGenerateDef;\n    this.tokenInjector = reflector.resolveExternalReference(Identifiers.Injector);\n  }\n\n  _createClass(InjectableCompiler, [{\n    key: \"depsArray\",\n    value: function depsArray(deps, ctx) {\n      var _this216 = this;\n\n      return deps.map(function (dep) {\n        var token = dep;\n        var args = [token];\n        var flags = 0\n        /* Default */\n        ;\n\n        if (Array.isArray(dep)) {\n          for (var i = 0; i < dep.length; i++) {\n            var v = dep[i];\n\n            if (v) {\n              if (v.ngMetadataName === 'Optional') {\n                flags |= 8\n                /* Optional */\n                ;\n              } else if (v.ngMetadataName === 'SkipSelf') {\n                flags |= 4\n                /* SkipSelf */\n                ;\n              } else if (v.ngMetadataName === 'Self') {\n                flags |= 2\n                /* Self */\n                ;\n              } else if (v.ngMetadataName === 'Inject') {\n                token = v.token;\n              } else {\n                token = v;\n              }\n            }\n          }\n        }\n\n        var tokenExpr;\n\n        if (typeof token === 'string') {\n          tokenExpr = literal(token);\n        } else if (token === _this216.tokenInjector) {\n          tokenExpr = importExpr(Identifiers.INJECTOR);\n        } else {\n          tokenExpr = ctx.importExpr(token);\n        }\n\n        if (flags !== 0\n        /* Default */\n        ) {\n          args = [tokenExpr, literal(flags)];\n        } else {\n          args = [tokenExpr];\n        }\n\n        return importExpr(Identifiers.inject).callFn(args);\n      });\n    }\n  }, {\n    key: \"factoryFor\",\n    value: function factoryFor(injectable, ctx) {\n      var retValue;\n\n      if (injectable.useExisting) {\n        retValue = importExpr(Identifiers.inject).callFn([ctx.importExpr(injectable.useExisting)]);\n      } else if (injectable.useFactory) {\n        var deps = injectable.deps || [];\n\n        if (deps.length > 0) {\n          retValue = ctx.importExpr(injectable.useFactory).callFn(this.depsArray(deps, ctx));\n        } else {\n          return ctx.importExpr(injectable.useFactory);\n        }\n      } else if (injectable.useValue) {\n        retValue = convertValueToOutputAst(ctx, injectable.useValue);\n      } else {\n        var clazz = injectable.useClass || injectable.symbol;\n        var depArgs = this.depsArray(this.reflector.parameters(clazz), ctx);\n        retValue = new InstantiateExpr(ctx.importExpr(clazz), depArgs);\n      }\n\n      return fn([], [new ReturnStatement(retValue)], undefined, undefined, injectable.symbol.name + '_Factory');\n    }\n  }, {\n    key: \"injectableDef\",\n    value: function injectableDef(injectable, ctx) {\n      var providedIn = NULL_EXPR;\n\n      if (injectable.providedIn !== undefined) {\n        if (injectable.providedIn === null) {\n          providedIn = NULL_EXPR;\n        } else if (typeof injectable.providedIn === 'string') {\n          providedIn = literal(injectable.providedIn);\n        } else {\n          providedIn = ctx.importExpr(injectable.providedIn);\n        }\n      }\n\n      var def = [mapEntry$1('factory', this.factoryFor(injectable, ctx)), mapEntry$1('token', ctx.importExpr(injectable.type.reference)), mapEntry$1('providedIn', providedIn)];\n      return importExpr(Identifiers.ɵɵdefineInjectable).callFn([literalMap(def)]);\n    }\n  }, {\n    key: \"compile\",\n    value: function compile(injectable, ctx) {\n      if (this.alwaysGenerateDef || injectable.providedIn !== undefined) {\n        var className = identifierName(injectable.type);\n        var clazz = new ClassStmt(className, null, [new ClassField('ɵprov', INFERRED_TYPE, [StmtModifier.Static], this.injectableDef(injectable, ctx))], [], new ClassMethod(null, [], []), []);\n        ctx.statements.push(clazz);\n      }\n    }\n  }]);\n\n  return InjectableCompiler;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar STRIP_SRC_FILE_SUFFIXES = /(\\.ts|\\.d\\.ts|\\.js|\\.jsx|\\.tsx)$/;\nvar GENERATED_FILE = /\\.ngfactory\\.|\\.ngsummary\\./;\nvar JIT_SUMMARY_FILE = /\\.ngsummary\\./;\nvar JIT_SUMMARY_NAME = /NgSummary$/;\n\nfunction ngfactoryFilePath(filePath) {\n  var forceSourceFile = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n  var urlWithSuffix = splitTypescriptSuffix(filePath, forceSourceFile);\n  return \"\".concat(urlWithSuffix[0], \".ngfactory\").concat(normalizeGenFileSuffix(urlWithSuffix[1]));\n}\n\nfunction stripGeneratedFileSuffix(filePath) {\n  return filePath.replace(GENERATED_FILE, '.');\n}\n\nfunction isGeneratedFile(filePath) {\n  return GENERATED_FILE.test(filePath);\n}\n\nfunction splitTypescriptSuffix(path) {\n  var forceSourceFile = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n  if (path.endsWith('.d.ts')) {\n    return [path.slice(0, -5), forceSourceFile ? '.ts' : '.d.ts'];\n  }\n\n  var lastDot = path.lastIndexOf('.');\n\n  if (lastDot !== -1) {\n    return [path.substring(0, lastDot), path.substring(lastDot)];\n  }\n\n  return [path, ''];\n}\n\nfunction normalizeGenFileSuffix(srcFileSuffix) {\n  return srcFileSuffix === '.tsx' ? '.ts' : srcFileSuffix;\n}\n\nfunction summaryFileName(fileName) {\n  var fileNameWithoutSuffix = fileName.replace(STRIP_SRC_FILE_SUFFIXES, '');\n  return \"\".concat(fileNameWithoutSuffix, \".ngsummary.json\");\n}\n\nfunction summaryForJitFileName(fileName) {\n  var forceSourceFile = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n  var urlWithSuffix = splitTypescriptSuffix(stripGeneratedFileSuffix(fileName), forceSourceFile);\n  return \"\".concat(urlWithSuffix[0], \".ngsummary\").concat(urlWithSuffix[1]);\n}\n\nfunction stripSummaryForJitFileSuffix(filePath) {\n  return filePath.replace(JIT_SUMMARY_FILE, '.');\n}\n\nfunction summaryForJitName(symbolName) {\n  return \"\".concat(symbolName, \"NgSummary\");\n}\n\nfunction stripSummaryForJitNameSuffix(symbolName) {\n  return symbolName.replace(JIT_SUMMARY_NAME, '');\n}\n\nvar LOWERED_SYMBOL = /\\u0275\\d+/;\n\nfunction isLoweredSymbol(name) {\n  return LOWERED_SYMBOL.test(name);\n}\n\nfunction createLoweredSymbol(id) {\n  return \"\\u0275\".concat(id);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar LifecycleHooks;\n\n(function (LifecycleHooks) {\n  LifecycleHooks[LifecycleHooks[\"OnInit\"] = 0] = \"OnInit\";\n  LifecycleHooks[LifecycleHooks[\"OnDestroy\"] = 1] = \"OnDestroy\";\n  LifecycleHooks[LifecycleHooks[\"DoCheck\"] = 2] = \"DoCheck\";\n  LifecycleHooks[LifecycleHooks[\"OnChanges\"] = 3] = \"OnChanges\";\n  LifecycleHooks[LifecycleHooks[\"AfterContentInit\"] = 4] = \"AfterContentInit\";\n  LifecycleHooks[LifecycleHooks[\"AfterContentChecked\"] = 5] = \"AfterContentChecked\";\n  LifecycleHooks[LifecycleHooks[\"AfterViewInit\"] = 6] = \"AfterViewInit\";\n  LifecycleHooks[LifecycleHooks[\"AfterViewChecked\"] = 7] = \"AfterViewChecked\";\n})(LifecycleHooks || (LifecycleHooks = {}));\n\nvar LIFECYCLE_HOOKS_VALUES = [LifecycleHooks.OnInit, LifecycleHooks.OnDestroy, LifecycleHooks.DoCheck, LifecycleHooks.OnChanges, LifecycleHooks.AfterContentInit, LifecycleHooks.AfterContentChecked, LifecycleHooks.AfterViewInit, LifecycleHooks.AfterViewChecked];\n\nfunction hasLifecycleHook(reflector, hook, token) {\n  return reflector.hasLifecycleHook(token, getHookName(hook));\n}\n\nfunction getAllLifecycleHooks(reflector, token) {\n  return LIFECYCLE_HOOKS_VALUES.filter(function (hook) {\n    return hasLifecycleHook(reflector, hook, token);\n  });\n}\n\nfunction getHookName(hook) {\n  switch (hook) {\n    case LifecycleHooks.OnInit:\n      return 'ngOnInit';\n\n    case LifecycleHooks.OnDestroy:\n      return 'ngOnDestroy';\n\n    case LifecycleHooks.DoCheck:\n      return 'ngDoCheck';\n\n    case LifecycleHooks.OnChanges:\n      return 'ngOnChanges';\n\n    case LifecycleHooks.AfterContentInit:\n      return 'ngAfterContentInit';\n\n    case LifecycleHooks.AfterContentChecked:\n      return 'ngAfterContentChecked';\n\n    case LifecycleHooks.AfterViewInit:\n      return 'ngAfterViewInit';\n\n    case LifecycleHooks.AfterViewChecked:\n      return 'ngAfterViewChecked';\n\n    default:\n      // This default case is not needed by TypeScript compiler, as the switch is exhaustive.\n      // However Closure Compiler does not understand that and reports an error in typed mode.\n      // The `throw new Error` below works around the problem, and the unexpected: never variable\n      // makes sure tsc still checks this code is unreachable.\n      var unexpected = hook;\n      throw new Error(\"unexpected \".concat(unexpected));\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ERROR_COMPONENT_TYPE = 'ngComponentType'; // Design notes:\n// - don't lazily create metadata:\n//   For some metadata, we need to do async work sometimes,\n//   so the user has to kick off this loading.\n//   But we want to report errors even when the async work is\n//   not required to check that the user would have been able\n//   to wait correctly.\n\nvar CompileMetadataResolver = /*#__PURE__*/function () {\n  function CompileMetadataResolver(_config, _htmlParser, _ngModuleResolver, _directiveResolver, _pipeResolver, _summaryResolver, _schemaRegistry, _directiveNormalizer, _console, _staticSymbolCache, _reflector, _errorCollector) {\n    _classCallCheck(this, CompileMetadataResolver);\n\n    this._config = _config;\n    this._htmlParser = _htmlParser;\n    this._ngModuleResolver = _ngModuleResolver;\n    this._directiveResolver = _directiveResolver;\n    this._pipeResolver = _pipeResolver;\n    this._summaryResolver = _summaryResolver;\n    this._schemaRegistry = _schemaRegistry;\n    this._directiveNormalizer = _directiveNormalizer;\n    this._console = _console;\n    this._staticSymbolCache = _staticSymbolCache;\n    this._reflector = _reflector;\n    this._errorCollector = _errorCollector;\n    this._nonNormalizedDirectiveCache = new Map();\n    this._directiveCache = new Map();\n    this._summaryCache = new Map();\n    this._pipeCache = new Map();\n    this._ngModuleCache = new Map();\n    this._ngModuleOfTypes = new Map();\n    this._shallowModuleCache = new Map();\n  }\n\n  _createClass(CompileMetadataResolver, [{\n    key: \"getReflector\",\n    value: function getReflector() {\n      return this._reflector;\n    }\n  }, {\n    key: \"clearCacheFor\",\n    value: function clearCacheFor(type) {\n      var dirMeta = this._directiveCache.get(type);\n\n      this._directiveCache.delete(type);\n\n      this._nonNormalizedDirectiveCache.delete(type);\n\n      this._summaryCache.delete(type);\n\n      this._pipeCache.delete(type);\n\n      this._ngModuleOfTypes.delete(type); // Clear all of the NgModule as they contain transitive information!\n\n\n      this._ngModuleCache.clear();\n\n      if (dirMeta) {\n        this._directiveNormalizer.clearCacheFor(dirMeta);\n      }\n    }\n  }, {\n    key: \"clearCache\",\n    value: function clearCache() {\n      this._directiveCache.clear();\n\n      this._nonNormalizedDirectiveCache.clear();\n\n      this._summaryCache.clear();\n\n      this._pipeCache.clear();\n\n      this._ngModuleCache.clear();\n\n      this._ngModuleOfTypes.clear();\n\n      this._directiveNormalizer.clearCache();\n    }\n  }, {\n    key: \"_createProxyClass\",\n    value: function _createProxyClass(baseType, name) {\n      var delegate = null;\n\n      var proxyClass = function proxyClass() {\n        if (!delegate) {\n          throw new Error(\"Illegal state: Class \".concat(name, \" for type \").concat(stringify(baseType), \" is not compiled yet!\"));\n        }\n\n        return delegate.apply(this, arguments);\n      };\n\n      proxyClass.setDelegate = function (d) {\n        delegate = d;\n        proxyClass.prototype = d.prototype;\n      }; // Make stringify work correctly\n\n\n      proxyClass.overriddenName = name;\n      return proxyClass;\n    }\n  }, {\n    key: \"getGeneratedClass\",\n    value: function getGeneratedClass(dirType, name) {\n      if (dirType instanceof StaticSymbol) {\n        return this._staticSymbolCache.get(ngfactoryFilePath(dirType.filePath), name);\n      } else {\n        return this._createProxyClass(dirType, name);\n      }\n    }\n  }, {\n    key: \"getComponentViewClass\",\n    value: function getComponentViewClass(dirType) {\n      return this.getGeneratedClass(dirType, viewClassName(dirType, 0));\n    }\n  }, {\n    key: \"getHostComponentViewClass\",\n    value: function getHostComponentViewClass(dirType) {\n      return this.getGeneratedClass(dirType, hostViewClassName(dirType));\n    }\n  }, {\n    key: \"getHostComponentType\",\n    value: function getHostComponentType(dirType) {\n      var name = \"\".concat(identifierName({\n        reference: dirType\n      }), \"_Host\");\n\n      if (dirType instanceof StaticSymbol) {\n        return this._staticSymbolCache.get(dirType.filePath, name);\n      }\n\n      return this._createProxyClass(dirType, name);\n    }\n  }, {\n    key: \"getRendererType\",\n    value: function getRendererType(dirType) {\n      if (dirType instanceof StaticSymbol) {\n        return this._staticSymbolCache.get(ngfactoryFilePath(dirType.filePath), rendererTypeName(dirType));\n      } else {\n        // returning an object as proxy,\n        // that we fill later during runtime compilation.\n        return {};\n      }\n    }\n  }, {\n    key: \"getComponentFactory\",\n    value: function getComponentFactory(selector, dirType, inputs, outputs) {\n      if (dirType instanceof StaticSymbol) {\n        return this._staticSymbolCache.get(ngfactoryFilePath(dirType.filePath), componentFactoryName(dirType));\n      } else {\n        var hostView = this.getHostComponentViewClass(dirType); // Note: ngContentSelectors will be filled later once the template is\n        // loaded.\n\n        var createComponentFactory = this._reflector.resolveExternalReference(Identifiers.createComponentFactory);\n\n        return createComponentFactory(selector, dirType, hostView, inputs, outputs, []);\n      }\n    }\n  }, {\n    key: \"initComponentFactory\",\n    value: function initComponentFactory(factory, ngContentSelectors) {\n      if (!(factory instanceof StaticSymbol)) {\n        var _factory$ngContentSel;\n\n        (_factory$ngContentSel = factory.ngContentSelectors).push.apply(_factory$ngContentSel, _toConsumableArray(ngContentSelectors));\n      }\n    }\n  }, {\n    key: \"_loadSummary\",\n    value: function _loadSummary(type, kind) {\n      var typeSummary = this._summaryCache.get(type);\n\n      if (!typeSummary) {\n        var summary = this._summaryResolver.resolveSummary(type);\n\n        typeSummary = summary ? summary.type : null;\n\n        this._summaryCache.set(type, typeSummary || null);\n      }\n\n      return typeSummary && typeSummary.summaryKind === kind ? typeSummary : null;\n    }\n  }, {\n    key: \"getHostComponentMetadata\",\n    value: function getHostComponentMetadata(compMeta, hostViewType) {\n      var hostType = this.getHostComponentType(compMeta.type.reference);\n\n      if (!hostViewType) {\n        hostViewType = this.getHostComponentViewClass(hostType);\n      } // Note: ! is ok here as this method should only be called with normalized directive\n      // metadata, which always fills in the selector.\n\n\n      var template = CssSelector.parse(compMeta.selector)[0].getMatchingElementTemplate();\n      var templateUrl = '';\n\n      var htmlAst = this._htmlParser.parse(template, templateUrl);\n\n      return CompileDirectiveMetadata.create({\n        isHost: true,\n        type: {\n          reference: hostType,\n          diDeps: [],\n          lifecycleHooks: []\n        },\n        template: new CompileTemplateMetadata({\n          encapsulation: ViewEncapsulation.None,\n          template: template,\n          templateUrl: templateUrl,\n          htmlAst: htmlAst,\n          styles: [],\n          styleUrls: [],\n          ngContentSelectors: [],\n          animations: [],\n          isInline: true,\n          externalStylesheets: [],\n          interpolation: null,\n          preserveWhitespaces: false\n        }),\n        exportAs: null,\n        changeDetection: ChangeDetectionStrategy.Default,\n        inputs: [],\n        outputs: [],\n        host: {},\n        isComponent: true,\n        selector: '*',\n        providers: [],\n        viewProviders: [],\n        queries: [],\n        guards: {},\n        viewQueries: [],\n        componentViewType: hostViewType,\n        rendererType: {\n          id: '__Host__',\n          encapsulation: ViewEncapsulation.None,\n          styles: [],\n          data: {}\n        },\n        entryComponents: [],\n        componentFactory: null\n      });\n    }\n  }, {\n    key: \"loadDirectiveMetadata\",\n    value: function loadDirectiveMetadata(ngModuleType, directiveType, isSync) {\n      var _this217 = this;\n\n      if (this._directiveCache.has(directiveType)) {\n        return null;\n      }\n\n      directiveType = resolveForwardRef(directiveType);\n\n      var _this$getNonNormalize = this.getNonNormalizedDirectiveMetadata(directiveType),\n          annotation = _this$getNonNormalize.annotation,\n          metadata = _this$getNonNormalize.metadata;\n\n      var createDirectiveMetadata = function createDirectiveMetadata(templateMetadata) {\n        var normalizedDirMeta = new CompileDirectiveMetadata({\n          isHost: false,\n          type: metadata.type,\n          isComponent: metadata.isComponent,\n          selector: metadata.selector,\n          exportAs: metadata.exportAs,\n          changeDetection: metadata.changeDetection,\n          inputs: metadata.inputs,\n          outputs: metadata.outputs,\n          hostListeners: metadata.hostListeners,\n          hostProperties: metadata.hostProperties,\n          hostAttributes: metadata.hostAttributes,\n          providers: metadata.providers,\n          viewProviders: metadata.viewProviders,\n          queries: metadata.queries,\n          guards: metadata.guards,\n          viewQueries: metadata.viewQueries,\n          entryComponents: metadata.entryComponents,\n          componentViewType: metadata.componentViewType,\n          rendererType: metadata.rendererType,\n          componentFactory: metadata.componentFactory,\n          template: templateMetadata\n        });\n\n        if (templateMetadata) {\n          _this217.initComponentFactory(metadata.componentFactory, templateMetadata.ngContentSelectors);\n        }\n\n        _this217._directiveCache.set(directiveType, normalizedDirMeta);\n\n        _this217._summaryCache.set(directiveType, normalizedDirMeta.toSummary());\n\n        return null;\n      };\n\n      if (metadata.isComponent) {\n        var template = metadata.template;\n\n        var templateMeta = this._directiveNormalizer.normalizeTemplate({\n          ngModuleType: ngModuleType,\n          componentType: directiveType,\n          moduleUrl: this._reflector.componentModuleUrl(directiveType, annotation),\n          encapsulation: template.encapsulation,\n          template: template.template,\n          templateUrl: template.templateUrl,\n          styles: template.styles,\n          styleUrls: template.styleUrls,\n          animations: template.animations,\n          interpolation: template.interpolation,\n          preserveWhitespaces: template.preserveWhitespaces\n        });\n\n        if (isPromise(templateMeta) && isSync) {\n          this._reportError(componentStillLoadingError(directiveType), directiveType);\n\n          return null;\n        }\n\n        return SyncAsync.then(templateMeta, createDirectiveMetadata);\n      } else {\n        // directive\n        createDirectiveMetadata(null);\n        return null;\n      }\n    }\n  }, {\n    key: \"getNonNormalizedDirectiveMetadata\",\n    value: function getNonNormalizedDirectiveMetadata(directiveType) {\n      var _this218 = this;\n\n      directiveType = resolveForwardRef(directiveType);\n\n      if (!directiveType) {\n        return null;\n      }\n\n      var cacheEntry = this._nonNormalizedDirectiveCache.get(directiveType);\n\n      if (cacheEntry) {\n        return cacheEntry;\n      }\n\n      var dirMeta = this._directiveResolver.resolve(directiveType, false);\n\n      if (!dirMeta) {\n        return null;\n      }\n\n      var nonNormalizedTemplateMetadata = undefined;\n\n      if (createComponent.isTypeOf(dirMeta)) {\n        // component\n        var compMeta = dirMeta;\n        assertArrayOfStrings('styles', compMeta.styles);\n        assertArrayOfStrings('styleUrls', compMeta.styleUrls);\n        assertInterpolationSymbols('interpolation', compMeta.interpolation);\n        var animations = compMeta.animations;\n        nonNormalizedTemplateMetadata = new CompileTemplateMetadata({\n          encapsulation: noUndefined(compMeta.encapsulation),\n          template: noUndefined(compMeta.template),\n          templateUrl: noUndefined(compMeta.templateUrl),\n          htmlAst: null,\n          styles: compMeta.styles || [],\n          styleUrls: compMeta.styleUrls || [],\n          animations: animations || [],\n          interpolation: noUndefined(compMeta.interpolation),\n          isInline: !!compMeta.template,\n          externalStylesheets: [],\n          ngContentSelectors: [],\n          preserveWhitespaces: noUndefined(dirMeta.preserveWhitespaces)\n        });\n      }\n\n      var changeDetectionStrategy = null;\n      var viewProviders = [];\n      var entryComponentMetadata = [];\n      var selector = dirMeta.selector;\n\n      if (createComponent.isTypeOf(dirMeta)) {\n        // Component\n        var _compMeta = dirMeta;\n        changeDetectionStrategy = _compMeta.changeDetection;\n\n        if (_compMeta.viewProviders) {\n          viewProviders = this._getProvidersMetadata(_compMeta.viewProviders, entryComponentMetadata, \"viewProviders for \\\"\".concat(stringifyType(directiveType), \"\\\"\"), [], directiveType);\n        }\n\n        if (_compMeta.entryComponents) {\n          entryComponentMetadata = flattenAndDedupeArray(_compMeta.entryComponents).map(function (type) {\n            return _this218._getEntryComponentMetadata(type);\n          }).concat(entryComponentMetadata);\n        }\n\n        if (!selector) {\n          selector = this._schemaRegistry.getDefaultComponentElementName();\n        }\n      } else {\n        // Directive\n        if (!selector) {\n          selector = null;\n        }\n      }\n\n      var providers = [];\n\n      if (dirMeta.providers != null) {\n        providers = this._getProvidersMetadata(dirMeta.providers, entryComponentMetadata, \"providers for \\\"\".concat(stringifyType(directiveType), \"\\\"\"), [], directiveType);\n      }\n\n      var queries = [];\n      var viewQueries = [];\n\n      if (dirMeta.queries != null) {\n        queries = this._getQueriesMetadata(dirMeta.queries, false, directiveType);\n        viewQueries = this._getQueriesMetadata(dirMeta.queries, true, directiveType);\n      }\n\n      var metadata = CompileDirectiveMetadata.create({\n        isHost: false,\n        selector: selector,\n        exportAs: noUndefined(dirMeta.exportAs),\n        isComponent: !!nonNormalizedTemplateMetadata,\n        type: this._getTypeMetadata(directiveType),\n        template: nonNormalizedTemplateMetadata,\n        changeDetection: changeDetectionStrategy,\n        inputs: dirMeta.inputs || [],\n        outputs: dirMeta.outputs || [],\n        host: dirMeta.host || {},\n        providers: providers || [],\n        viewProviders: viewProviders || [],\n        queries: queries || [],\n        guards: dirMeta.guards || {},\n        viewQueries: viewQueries || [],\n        entryComponents: entryComponentMetadata,\n        componentViewType: nonNormalizedTemplateMetadata ? this.getComponentViewClass(directiveType) : null,\n        rendererType: nonNormalizedTemplateMetadata ? this.getRendererType(directiveType) : null,\n        componentFactory: null\n      });\n\n      if (nonNormalizedTemplateMetadata) {\n        metadata.componentFactory = this.getComponentFactory(selector, directiveType, metadata.inputs, metadata.outputs);\n      }\n\n      cacheEntry = {\n        metadata: metadata,\n        annotation: dirMeta\n      };\n\n      this._nonNormalizedDirectiveCache.set(directiveType, cacheEntry);\n\n      return cacheEntry;\n    }\n    /**\n     * Gets the metadata for the given directive.\n     * This assumes `loadNgModuleDirectiveAndPipeMetadata` has been called first.\n     */\n\n  }, {\n    key: \"getDirectiveMetadata\",\n    value: function getDirectiveMetadata(directiveType) {\n      var dirMeta = this._directiveCache.get(directiveType);\n\n      if (!dirMeta) {\n        this._reportError(syntaxError(\"Illegal state: getDirectiveMetadata can only be called after loadNgModuleDirectiveAndPipeMetadata for a module that declares it. Directive \".concat(stringifyType(directiveType), \".\")), directiveType);\n      }\n\n      return dirMeta;\n    }\n  }, {\n    key: \"getDirectiveSummary\",\n    value: function getDirectiveSummary(dirType) {\n      var dirSummary = this._loadSummary(dirType, CompileSummaryKind.Directive);\n\n      if (!dirSummary) {\n        this._reportError(syntaxError(\"Illegal state: Could not load the summary for directive \".concat(stringifyType(dirType), \".\")), dirType);\n      }\n\n      return dirSummary;\n    }\n  }, {\n    key: \"isDirective\",\n    value: function isDirective(type) {\n      return !!this._loadSummary(type, CompileSummaryKind.Directive) || this._directiveResolver.isDirective(type);\n    }\n  }, {\n    key: \"isAbstractDirective\",\n    value: function isAbstractDirective(type) {\n      var summary = this._loadSummary(type, CompileSummaryKind.Directive);\n\n      if (summary && !summary.isComponent) {\n        return !summary.selector;\n      }\n\n      var meta = this._directiveResolver.resolve(type, false);\n\n      if (meta && !createComponent.isTypeOf(meta)) {\n        return !meta.selector;\n      }\n\n      return false;\n    }\n  }, {\n    key: \"isPipe\",\n    value: function isPipe(type) {\n      return !!this._loadSummary(type, CompileSummaryKind.Pipe) || this._pipeResolver.isPipe(type);\n    }\n  }, {\n    key: \"isNgModule\",\n    value: function isNgModule(type) {\n      return !!this._loadSummary(type, CompileSummaryKind.NgModule) || this._ngModuleResolver.isNgModule(type);\n    }\n  }, {\n    key: \"getNgModuleSummary\",\n    value: function getNgModuleSummary(moduleType) {\n      var alreadyCollecting = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n\n      var moduleSummary = this._loadSummary(moduleType, CompileSummaryKind.NgModule);\n\n      if (!moduleSummary) {\n        var moduleMeta = this.getNgModuleMetadata(moduleType, false, alreadyCollecting);\n        moduleSummary = moduleMeta ? moduleMeta.toSummary() : null;\n\n        if (moduleSummary) {\n          this._summaryCache.set(moduleType, moduleSummary);\n        }\n      }\n\n      return moduleSummary;\n    }\n    /**\n     * Loads the declared directives and pipes of an NgModule.\n     */\n\n  }, {\n    key: \"loadNgModuleDirectiveAndPipeMetadata\",\n    value: function loadNgModuleDirectiveAndPipeMetadata(moduleType, isSync) {\n      var _this219 = this;\n\n      var throwIfNotFound = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;\n      var ngModule = this.getNgModuleMetadata(moduleType, throwIfNotFound);\n      var loading = [];\n\n      if (ngModule) {\n        ngModule.declaredDirectives.forEach(function (id) {\n          var promise = _this219.loadDirectiveMetadata(moduleType, id.reference, isSync);\n\n          if (promise) {\n            loading.push(promise);\n          }\n        });\n        ngModule.declaredPipes.forEach(function (id) {\n          return _this219._loadPipeMetadata(id.reference);\n        });\n      }\n\n      return Promise.all(loading);\n    }\n  }, {\n    key: \"getShallowModuleMetadata\",\n    value: function getShallowModuleMetadata(moduleType) {\n      var compileMeta = this._shallowModuleCache.get(moduleType);\n\n      if (compileMeta) {\n        return compileMeta;\n      }\n\n      var ngModuleMeta = findLast(this._reflector.shallowAnnotations(moduleType), createNgModule.isTypeOf);\n      compileMeta = {\n        type: this._getTypeMetadata(moduleType),\n        rawExports: ngModuleMeta.exports,\n        rawImports: ngModuleMeta.imports,\n        rawProviders: ngModuleMeta.providers\n      };\n\n      this._shallowModuleCache.set(moduleType, compileMeta);\n\n      return compileMeta;\n    }\n  }, {\n    key: \"getNgModuleMetadata\",\n    value: function getNgModuleMetadata(moduleType) {\n      var _this220 = this;\n\n      var throwIfNotFound = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;\n      var alreadyCollecting = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;\n      moduleType = resolveForwardRef(moduleType);\n\n      var compileMeta = this._ngModuleCache.get(moduleType);\n\n      if (compileMeta) {\n        return compileMeta;\n      }\n\n      var meta = this._ngModuleResolver.resolve(moduleType, throwIfNotFound);\n\n      if (!meta) {\n        return null;\n      }\n\n      var declaredDirectives = [];\n      var exportedNonModuleIdentifiers = [];\n      var declaredPipes = [];\n      var importedModules = [];\n      var exportedModules = [];\n      var providers = [];\n      var entryComponents = [];\n      var bootstrapComponents = [];\n      var schemas = [];\n\n      if (meta.imports) {\n        flattenAndDedupeArray(meta.imports).forEach(function (importedType) {\n          var importedModuleType = undefined;\n\n          if (isValidType(importedType)) {\n            importedModuleType = importedType;\n          } else if (importedType && importedType.ngModule) {\n            var moduleWithProviders = importedType;\n            importedModuleType = moduleWithProviders.ngModule;\n\n            if (moduleWithProviders.providers) {\n              providers.push.apply(providers, _toConsumableArray(_this220._getProvidersMetadata(moduleWithProviders.providers, entryComponents, \"provider for the NgModule '\".concat(stringifyType(importedModuleType), \"'\"), [], importedType)));\n            }\n          }\n\n          if (importedModuleType) {\n            if (_this220._checkSelfImport(moduleType, importedModuleType)) return;\n            if (!alreadyCollecting) alreadyCollecting = new Set();\n\n            if (alreadyCollecting.has(importedModuleType)) {\n              _this220._reportError(syntaxError(\"\".concat(_this220._getTypeDescriptor(importedModuleType), \" '\").concat(stringifyType(importedType), \"' is imported recursively by the module '\").concat(stringifyType(moduleType), \"'.\")), moduleType);\n\n              return;\n            }\n\n            alreadyCollecting.add(importedModuleType);\n\n            var importedModuleSummary = _this220.getNgModuleSummary(importedModuleType, alreadyCollecting);\n\n            alreadyCollecting.delete(importedModuleType);\n\n            if (!importedModuleSummary) {\n              _this220._reportError(syntaxError(\"Unexpected \".concat(_this220._getTypeDescriptor(importedType), \" '\").concat(stringifyType(importedType), \"' imported by the module '\").concat(stringifyType(moduleType), \"'. Please add a @NgModule annotation.\")), moduleType);\n\n              return;\n            }\n\n            importedModules.push(importedModuleSummary);\n          } else {\n            _this220._reportError(syntaxError(\"Unexpected value '\".concat(stringifyType(importedType), \"' imported by the module '\").concat(stringifyType(moduleType), \"'\")), moduleType);\n\n            return;\n          }\n        });\n      }\n\n      if (meta.exports) {\n        flattenAndDedupeArray(meta.exports).forEach(function (exportedType) {\n          if (!isValidType(exportedType)) {\n            _this220._reportError(syntaxError(\"Unexpected value '\".concat(stringifyType(exportedType), \"' exported by the module '\").concat(stringifyType(moduleType), \"'\")), moduleType);\n\n            return;\n          }\n\n          if (!alreadyCollecting) alreadyCollecting = new Set();\n\n          if (alreadyCollecting.has(exportedType)) {\n            _this220._reportError(syntaxError(\"\".concat(_this220._getTypeDescriptor(exportedType), \" '\").concat(stringify(exportedType), \"' is exported recursively by the module '\").concat(stringifyType(moduleType), \"'\")), moduleType);\n\n            return;\n          }\n\n          alreadyCollecting.add(exportedType);\n\n          var exportedModuleSummary = _this220.getNgModuleSummary(exportedType, alreadyCollecting);\n\n          alreadyCollecting.delete(exportedType);\n\n          if (exportedModuleSummary) {\n            exportedModules.push(exportedModuleSummary);\n          } else {\n            exportedNonModuleIdentifiers.push(_this220._getIdentifierMetadata(exportedType));\n          }\n        });\n      } // Note: This will be modified later, so we rely on\n      // getting a new instance every time!\n\n\n      var transitiveModule = this._getTransitiveNgModuleMetadata(importedModules, exportedModules);\n\n      if (meta.declarations) {\n        flattenAndDedupeArray(meta.declarations).forEach(function (declaredType) {\n          if (!isValidType(declaredType)) {\n            _this220._reportError(syntaxError(\"Unexpected value '\".concat(stringifyType(declaredType), \"' declared by the module '\").concat(stringifyType(moduleType), \"'\")), moduleType);\n\n            return;\n          }\n\n          var declaredIdentifier = _this220._getIdentifierMetadata(declaredType);\n\n          if (_this220.isDirective(declaredType)) {\n            if (_this220.isAbstractDirective(declaredType)) {\n              _this220._reportError(syntaxError(\"Directive \".concat(stringifyType(declaredType), \" has no selector, please add it!\")), declaredType);\n            }\n\n            transitiveModule.addDirective(declaredIdentifier);\n            declaredDirectives.push(declaredIdentifier);\n\n            _this220._addTypeToModule(declaredType, moduleType);\n          } else if (_this220.isPipe(declaredType)) {\n            transitiveModule.addPipe(declaredIdentifier);\n            transitiveModule.pipes.push(declaredIdentifier);\n            declaredPipes.push(declaredIdentifier);\n\n            _this220._addTypeToModule(declaredType, moduleType);\n          } else {\n            _this220._reportError(syntaxError(\"Unexpected \".concat(_this220._getTypeDescriptor(declaredType), \" '\").concat(stringifyType(declaredType), \"' declared by the module '\").concat(stringifyType(moduleType), \"'. Please add a @Pipe/@Directive/@Component annotation.\")), moduleType);\n\n            return;\n          }\n        });\n      }\n\n      var exportedDirectives = [];\n      var exportedPipes = [];\n      exportedNonModuleIdentifiers.forEach(function (exportedId) {\n        if (transitiveModule.directivesSet.has(exportedId.reference)) {\n          exportedDirectives.push(exportedId);\n          transitiveModule.addExportedDirective(exportedId);\n        } else if (transitiveModule.pipesSet.has(exportedId.reference)) {\n          exportedPipes.push(exportedId);\n          transitiveModule.addExportedPipe(exportedId);\n        } else {\n          _this220._reportError(syntaxError(\"Can't export \".concat(_this220._getTypeDescriptor(exportedId.reference), \" \").concat(stringifyType(exportedId.reference), \" from \").concat(stringifyType(moduleType), \" as it was neither declared nor imported!\")), moduleType);\n\n          return;\n        }\n      }); // The providers of the module have to go last\n      // so that they overwrite any other provider we already added.\n\n      if (meta.providers) {\n        providers.push.apply(providers, _toConsumableArray(this._getProvidersMetadata(meta.providers, entryComponents, \"provider for the NgModule '\".concat(stringifyType(moduleType), \"'\"), [], moduleType)));\n      }\n\n      if (meta.entryComponents) {\n        entryComponents.push.apply(entryComponents, _toConsumableArray(flattenAndDedupeArray(meta.entryComponents).map(function (type) {\n          return _this220._getEntryComponentMetadata(type);\n        })));\n      }\n\n      if (meta.bootstrap) {\n        flattenAndDedupeArray(meta.bootstrap).forEach(function (type) {\n          if (!isValidType(type)) {\n            _this220._reportError(syntaxError(\"Unexpected value '\".concat(stringifyType(type), \"' used in the bootstrap property of module '\").concat(stringifyType(moduleType), \"'\")), moduleType);\n\n            return;\n          }\n\n          bootstrapComponents.push(_this220._getIdentifierMetadata(type));\n        });\n      }\n\n      entryComponents.push.apply(entryComponents, _toConsumableArray(bootstrapComponents.map(function (type) {\n        return _this220._getEntryComponentMetadata(type.reference);\n      })));\n\n      if (meta.schemas) {\n        schemas.push.apply(schemas, _toConsumableArray(flattenAndDedupeArray(meta.schemas)));\n      }\n\n      compileMeta = new CompileNgModuleMetadata({\n        type: this._getTypeMetadata(moduleType),\n        providers: providers,\n        entryComponents: entryComponents,\n        bootstrapComponents: bootstrapComponents,\n        schemas: schemas,\n        declaredDirectives: declaredDirectives,\n        exportedDirectives: exportedDirectives,\n        declaredPipes: declaredPipes,\n        exportedPipes: exportedPipes,\n        importedModules: importedModules,\n        exportedModules: exportedModules,\n        transitiveModule: transitiveModule,\n        id: meta.id || null\n      });\n      entryComponents.forEach(function (id) {\n        return transitiveModule.addEntryComponent(id);\n      });\n      providers.forEach(function (provider) {\n        return transitiveModule.addProvider(provider, compileMeta.type);\n      });\n      transitiveModule.addModule(compileMeta.type);\n\n      this._ngModuleCache.set(moduleType, compileMeta);\n\n      return compileMeta;\n    }\n  }, {\n    key: \"_checkSelfImport\",\n    value: function _checkSelfImport(moduleType, importedModuleType) {\n      if (moduleType === importedModuleType) {\n        this._reportError(syntaxError(\"'\".concat(stringifyType(moduleType), \"' module can't import itself\")), moduleType);\n\n        return true;\n      }\n\n      return false;\n    }\n  }, {\n    key: \"_getTypeDescriptor\",\n    value: function _getTypeDescriptor(type) {\n      if (isValidType(type)) {\n        if (this.isDirective(type)) {\n          return 'directive';\n        }\n\n        if (this.isPipe(type)) {\n          return 'pipe';\n        }\n\n        if (this.isNgModule(type)) {\n          return 'module';\n        }\n      }\n\n      if (type.provide) {\n        return 'provider';\n      }\n\n      return 'value';\n    }\n  }, {\n    key: \"_addTypeToModule\",\n    value: function _addTypeToModule(type, moduleType) {\n      var oldModule = this._ngModuleOfTypes.get(type);\n\n      if (oldModule && oldModule !== moduleType) {\n        this._reportError(syntaxError(\"Type \".concat(stringifyType(type), \" is part of the declarations of 2 modules: \").concat(stringifyType(oldModule), \" and \").concat(stringifyType(moduleType), \"! \") + \"Please consider moving \".concat(stringifyType(type), \" to a higher module that imports \").concat(stringifyType(oldModule), \" and \").concat(stringifyType(moduleType), \". \") + \"You can also create a new NgModule that exports and includes \".concat(stringifyType(type), \" then import that NgModule in \").concat(stringifyType(oldModule), \" and \").concat(stringifyType(moduleType), \".\")), moduleType);\n\n        return;\n      }\n\n      this._ngModuleOfTypes.set(type, moduleType);\n    }\n  }, {\n    key: \"_getTransitiveNgModuleMetadata\",\n    value: function _getTransitiveNgModuleMetadata(importedModules, exportedModules) {\n      // collect `providers` / `entryComponents` from all imported and all exported modules\n      var result = new TransitiveCompileNgModuleMetadata();\n      var modulesByToken = new Map();\n      importedModules.concat(exportedModules).forEach(function (modSummary) {\n        modSummary.modules.forEach(function (mod) {\n          return result.addModule(mod);\n        });\n        modSummary.entryComponents.forEach(function (comp) {\n          return result.addEntryComponent(comp);\n        });\n        var addedTokens = new Set();\n        modSummary.providers.forEach(function (entry) {\n          var tokenRef = tokenReference(entry.provider.token);\n          var prevModules = modulesByToken.get(tokenRef);\n\n          if (!prevModules) {\n            prevModules = new Set();\n            modulesByToken.set(tokenRef, prevModules);\n          }\n\n          var moduleRef = entry.module.reference; // Note: the providers of one module may still contain multiple providers\n          // per token (e.g. for multi providers), and we need to preserve these.\n\n          if (addedTokens.has(tokenRef) || !prevModules.has(moduleRef)) {\n            prevModules.add(moduleRef);\n            addedTokens.add(tokenRef);\n            result.addProvider(entry.provider, entry.module);\n          }\n        });\n      });\n      exportedModules.forEach(function (modSummary) {\n        modSummary.exportedDirectives.forEach(function (id) {\n          return result.addExportedDirective(id);\n        });\n        modSummary.exportedPipes.forEach(function (id) {\n          return result.addExportedPipe(id);\n        });\n      });\n      importedModules.forEach(function (modSummary) {\n        modSummary.exportedDirectives.forEach(function (id) {\n          return result.addDirective(id);\n        });\n        modSummary.exportedPipes.forEach(function (id) {\n          return result.addPipe(id);\n        });\n      });\n      return result;\n    }\n  }, {\n    key: \"_getIdentifierMetadata\",\n    value: function _getIdentifierMetadata(type) {\n      type = resolveForwardRef(type);\n      return {\n        reference: type\n      };\n    }\n  }, {\n    key: \"isInjectable\",\n    value: function isInjectable(type) {\n      var annotations = this._reflector.tryAnnotations(type);\n\n      return annotations.some(function (ann) {\n        return createInjectable.isTypeOf(ann);\n      });\n    }\n  }, {\n    key: \"getInjectableSummary\",\n    value: function getInjectableSummary(type) {\n      return {\n        summaryKind: CompileSummaryKind.Injectable,\n        type: this._getTypeMetadata(type, null, false)\n      };\n    }\n  }, {\n    key: \"getInjectableMetadata\",\n    value: function getInjectableMetadata(type) {\n      var dependencies = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      var throwOnUnknownDeps = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;\n\n      var typeSummary = this._loadSummary(type, CompileSummaryKind.Injectable);\n\n      var typeMetadata = typeSummary ? typeSummary.type : this._getTypeMetadata(type, dependencies, throwOnUnknownDeps);\n\n      var annotations = this._reflector.annotations(type).filter(function (ann) {\n        return createInjectable.isTypeOf(ann);\n      });\n\n      if (annotations.length === 0) {\n        return null;\n      }\n\n      var meta = annotations[annotations.length - 1];\n      return {\n        symbol: type,\n        type: typeMetadata,\n        providedIn: meta.providedIn,\n        useValue: meta.useValue,\n        useClass: meta.useClass,\n        useExisting: meta.useExisting,\n        useFactory: meta.useFactory,\n        deps: meta.deps\n      };\n    }\n  }, {\n    key: \"_getTypeMetadata\",\n    value: function _getTypeMetadata(type) {\n      var dependencies = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      var throwOnUnknownDeps = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;\n\n      var identifier = this._getIdentifierMetadata(type);\n\n      return {\n        reference: identifier.reference,\n        diDeps: this._getDependenciesMetadata(identifier.reference, dependencies, throwOnUnknownDeps),\n        lifecycleHooks: getAllLifecycleHooks(this._reflector, identifier.reference)\n      };\n    }\n  }, {\n    key: \"_getFactoryMetadata\",\n    value: function _getFactoryMetadata(factory) {\n      var dependencies = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n      factory = resolveForwardRef(factory);\n      return {\n        reference: factory,\n        diDeps: this._getDependenciesMetadata(factory, dependencies)\n      };\n    }\n    /**\n     * Gets the metadata for the given pipe.\n     * This assumes `loadNgModuleDirectiveAndPipeMetadata` has been called first.\n     */\n\n  }, {\n    key: \"getPipeMetadata\",\n    value: function getPipeMetadata(pipeType) {\n      var pipeMeta = this._pipeCache.get(pipeType);\n\n      if (!pipeMeta) {\n        this._reportError(syntaxError(\"Illegal state: getPipeMetadata can only be called after loadNgModuleDirectiveAndPipeMetadata for a module that declares it. Pipe \".concat(stringifyType(pipeType), \".\")), pipeType);\n      }\n\n      return pipeMeta || null;\n    }\n  }, {\n    key: \"getPipeSummary\",\n    value: function getPipeSummary(pipeType) {\n      var pipeSummary = this._loadSummary(pipeType, CompileSummaryKind.Pipe);\n\n      if (!pipeSummary) {\n        this._reportError(syntaxError(\"Illegal state: Could not load the summary for pipe \".concat(stringifyType(pipeType), \".\")), pipeType);\n      }\n\n      return pipeSummary;\n    }\n  }, {\n    key: \"getOrLoadPipeMetadata\",\n    value: function getOrLoadPipeMetadata(pipeType) {\n      var pipeMeta = this._pipeCache.get(pipeType);\n\n      if (!pipeMeta) {\n        pipeMeta = this._loadPipeMetadata(pipeType);\n      }\n\n      return pipeMeta;\n    }\n  }, {\n    key: \"_loadPipeMetadata\",\n    value: function _loadPipeMetadata(pipeType) {\n      pipeType = resolveForwardRef(pipeType);\n\n      var pipeAnnotation = this._pipeResolver.resolve(pipeType);\n\n      var pipeMeta = new CompilePipeMetadata({\n        type: this._getTypeMetadata(pipeType),\n        name: pipeAnnotation.name,\n        pure: !!pipeAnnotation.pure\n      });\n\n      this._pipeCache.set(pipeType, pipeMeta);\n\n      this._summaryCache.set(pipeType, pipeMeta.toSummary());\n\n      return pipeMeta;\n    }\n  }, {\n    key: \"_getDependenciesMetadata\",\n    value: function _getDependenciesMetadata(typeOrFunc, dependencies) {\n      var _this221 = this;\n\n      var throwOnUnknownDeps = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;\n      var hasUnknownDeps = false;\n      var params = dependencies || this._reflector.parameters(typeOrFunc) || [];\n      var dependenciesMetadata = params.map(function (param) {\n        var isAttribute = false;\n        var isHost = false;\n        var isSelf = false;\n        var isSkipSelf = false;\n        var isOptional = false;\n        var token = null;\n\n        if (Array.isArray(param)) {\n          param.forEach(function (paramEntry) {\n            if (createHost.isTypeOf(paramEntry)) {\n              isHost = true;\n            } else if (createSelf.isTypeOf(paramEntry)) {\n              isSelf = true;\n            } else if (createSkipSelf.isTypeOf(paramEntry)) {\n              isSkipSelf = true;\n            } else if (createOptional.isTypeOf(paramEntry)) {\n              isOptional = true;\n            } else if (createAttribute.isTypeOf(paramEntry)) {\n              isAttribute = true;\n              token = paramEntry.attributeName;\n            } else if (createInject.isTypeOf(paramEntry)) {\n              token = paramEntry.token;\n            } else if (createInjectionToken.isTypeOf(paramEntry) || paramEntry instanceof StaticSymbol) {\n              token = paramEntry;\n            } else if (isValidType(paramEntry) && token == null) {\n              token = paramEntry;\n            }\n          });\n        } else {\n          token = param;\n        }\n\n        if (token == null) {\n          hasUnknownDeps = true;\n          return {};\n        }\n\n        return {\n          isAttribute: isAttribute,\n          isHost: isHost,\n          isSelf: isSelf,\n          isSkipSelf: isSkipSelf,\n          isOptional: isOptional,\n          token: _this221._getTokenMetadata(token)\n        };\n      });\n\n      if (hasUnknownDeps) {\n        var depsTokens = dependenciesMetadata.map(function (dep) {\n          return dep.token ? stringifyType(dep.token) : '?';\n        }).join(', ');\n        var message = \"Can't resolve all parameters for \".concat(stringifyType(typeOrFunc), \": (\").concat(depsTokens, \").\");\n\n        if (throwOnUnknownDeps || this._config.strictInjectionParameters) {\n          this._reportError(syntaxError(message), typeOrFunc);\n        }\n      }\n\n      return dependenciesMetadata;\n    }\n  }, {\n    key: \"_getTokenMetadata\",\n    value: function _getTokenMetadata(token) {\n      token = resolveForwardRef(token);\n      var compileToken;\n\n      if (typeof token === 'string') {\n        compileToken = {\n          value: token\n        };\n      } else {\n        compileToken = {\n          identifier: {\n            reference: token\n          }\n        };\n      }\n\n      return compileToken;\n    }\n  }, {\n    key: \"_getProvidersMetadata\",\n    value: function _getProvidersMetadata(providers, targetEntryComponents, debugInfo) {\n      var _this222 = this;\n\n      var compileProviders = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : [];\n      var type = arguments.length > 4 ? arguments[4] : undefined;\n      providers.forEach(function (provider, providerIdx) {\n        if (Array.isArray(provider)) {\n          _this222._getProvidersMetadata(provider, targetEntryComponents, debugInfo, compileProviders);\n        } else {\n          provider = resolveForwardRef(provider);\n          var providerMeta = undefined;\n\n          if (provider && _typeof(provider) === 'object' && provider.hasOwnProperty('provide')) {\n            _this222._validateProvider(provider);\n\n            providerMeta = new ProviderMeta(provider.provide, provider);\n          } else if (isValidType(provider)) {\n            providerMeta = new ProviderMeta(provider, {\n              useClass: provider\n            });\n          } else if (provider === void 0) {\n            _this222._reportError(syntaxError(\"Encountered undefined provider! Usually this means you have a circular dependencies. This might be caused by using 'barrel' index.ts files.\"));\n\n            return;\n          } else {\n            var providersInfo = providers.reduce(function (soFar, seenProvider, seenProviderIdx) {\n              if (seenProviderIdx < providerIdx) {\n                soFar.push(\"\".concat(stringifyType(seenProvider)));\n              } else if (seenProviderIdx == providerIdx) {\n                soFar.push(\"?\".concat(stringifyType(seenProvider), \"?\"));\n              } else if (seenProviderIdx == providerIdx + 1) {\n                soFar.push('...');\n              }\n\n              return soFar;\n            }, []).join(', ');\n\n            _this222._reportError(syntaxError(\"Invalid \".concat(debugInfo ? debugInfo : 'provider', \" - only instances of Provider and Type are allowed, got: [\").concat(providersInfo, \"]\")), type);\n\n            return;\n          }\n\n          if (providerMeta.token === _this222._reflector.resolveExternalReference(Identifiers.ANALYZE_FOR_ENTRY_COMPONENTS)) {\n            targetEntryComponents.push.apply(targetEntryComponents, _toConsumableArray(_this222._getEntryComponentsFromProvider(providerMeta, type)));\n          } else {\n            compileProviders.push(_this222.getProviderMetadata(providerMeta));\n          }\n        }\n      });\n      return compileProviders;\n    }\n  }, {\n    key: \"_validateProvider\",\n    value: function _validateProvider(provider) {\n      if (provider.hasOwnProperty('useClass') && provider.useClass == null) {\n        this._reportError(syntaxError(\"Invalid provider for \".concat(stringifyType(provider.provide), \". useClass cannot be \").concat(provider.useClass, \".\\n           Usually it happens when:\\n           1. There's a circular dependency (might be caused by using index.ts (barrel) files).\\n           2. Class was used before it was declared. Use forwardRef in this case.\")));\n      }\n    }\n  }, {\n    key: \"_getEntryComponentsFromProvider\",\n    value: function _getEntryComponentsFromProvider(provider, type) {\n      var _this223 = this;\n\n      var components = [];\n      var collectedIdentifiers = [];\n\n      if (provider.useFactory || provider.useExisting || provider.useClass) {\n        this._reportError(syntaxError(\"The ANALYZE_FOR_ENTRY_COMPONENTS token only supports useValue!\"), type);\n\n        return [];\n      }\n\n      if (!provider.multi) {\n        this._reportError(syntaxError(\"The ANALYZE_FOR_ENTRY_COMPONENTS token only supports 'multi = true'!\"), type);\n\n        return [];\n      }\n\n      extractIdentifiers(provider.useValue, collectedIdentifiers);\n      collectedIdentifiers.forEach(function (identifier) {\n        var entry = _this223._getEntryComponentMetadata(identifier.reference, false);\n\n        if (entry) {\n          components.push(entry);\n        }\n      });\n      return components;\n    }\n  }, {\n    key: \"_getEntryComponentMetadata\",\n    value: function _getEntryComponentMetadata(dirType) {\n      var throwIfNotFound = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;\n      var dirMeta = this.getNonNormalizedDirectiveMetadata(dirType);\n\n      if (dirMeta && dirMeta.metadata.isComponent) {\n        return {\n          componentType: dirType,\n          componentFactory: dirMeta.metadata.componentFactory\n        };\n      }\n\n      var dirSummary = this._loadSummary(dirType, CompileSummaryKind.Directive);\n\n      if (dirSummary && dirSummary.isComponent) {\n        return {\n          componentType: dirType,\n          componentFactory: dirSummary.componentFactory\n        };\n      }\n\n      if (throwIfNotFound) {\n        throw syntaxError(\"\".concat(dirType.name, \" cannot be used as an entry component.\"));\n      }\n\n      return null;\n    }\n  }, {\n    key: \"_getInjectableTypeMetadata\",\n    value: function _getInjectableTypeMetadata(type) {\n      var dependencies = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n\n      var typeSummary = this._loadSummary(type, CompileSummaryKind.Injectable);\n\n      if (typeSummary) {\n        return typeSummary.type;\n      }\n\n      return this._getTypeMetadata(type, dependencies);\n    }\n  }, {\n    key: \"getProviderMetadata\",\n    value: function getProviderMetadata(provider) {\n      var compileDeps = undefined;\n      var compileTypeMetadata = null;\n      var compileFactoryMetadata = null;\n\n      var token = this._getTokenMetadata(provider.token);\n\n      if (provider.useClass) {\n        compileTypeMetadata = this._getInjectableTypeMetadata(provider.useClass, provider.dependencies);\n        compileDeps = compileTypeMetadata.diDeps;\n\n        if (provider.token === provider.useClass) {\n          // use the compileTypeMetadata as it contains information about lifecycleHooks...\n          token = {\n            identifier: compileTypeMetadata\n          };\n        }\n      } else if (provider.useFactory) {\n        compileFactoryMetadata = this._getFactoryMetadata(provider.useFactory, provider.dependencies);\n        compileDeps = compileFactoryMetadata.diDeps;\n      }\n\n      return {\n        token: token,\n        useClass: compileTypeMetadata,\n        useValue: provider.useValue,\n        useFactory: compileFactoryMetadata,\n        useExisting: provider.useExisting ? this._getTokenMetadata(provider.useExisting) : undefined,\n        deps: compileDeps,\n        multi: provider.multi\n      };\n    }\n  }, {\n    key: \"_getQueriesMetadata\",\n    value: function _getQueriesMetadata(queries, isViewQuery, directiveType) {\n      var _this224 = this;\n\n      var res = [];\n      Object.keys(queries).forEach(function (propertyName) {\n        var query = queries[propertyName];\n\n        if (query.isViewQuery === isViewQuery) {\n          res.push(_this224._getQueryMetadata(query, propertyName, directiveType));\n        }\n      });\n      return res;\n    }\n  }, {\n    key: \"_queryVarBindings\",\n    value: function _queryVarBindings(selector) {\n      return selector.split(/\\s*,\\s*/);\n    }\n  }, {\n    key: \"_getQueryMetadata\",\n    value: function _getQueryMetadata(q, propertyName, typeOrFunc) {\n      var _this225 = this;\n\n      var selectors;\n\n      if (typeof q.selector === 'string') {\n        selectors = this._queryVarBindings(q.selector).map(function (varName) {\n          return _this225._getTokenMetadata(varName);\n        });\n      } else {\n        if (!q.selector) {\n          this._reportError(syntaxError(\"Can't construct a query for the property \\\"\".concat(propertyName, \"\\\" of \\\"\").concat(stringifyType(typeOrFunc), \"\\\" since the query selector wasn't defined.\")), typeOrFunc);\n\n          selectors = [];\n        } else {\n          selectors = [this._getTokenMetadata(q.selector)];\n        }\n      }\n\n      return {\n        selectors: selectors,\n        first: q.first,\n        descendants: q.descendants,\n        propertyName: propertyName,\n        read: q.read ? this._getTokenMetadata(q.read) : null,\n        static: q.static\n      };\n    }\n  }, {\n    key: \"_reportError\",\n    value: function _reportError(error, type, otherType) {\n      if (this._errorCollector) {\n        this._errorCollector(error, type);\n\n        if (otherType) {\n          this._errorCollector(error, otherType);\n        }\n      } else {\n        throw error;\n      }\n    }\n  }]);\n\n  return CompileMetadataResolver;\n}();\n\nfunction flattenArray(tree) {\n  var out = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];\n\n  if (tree) {\n    for (var i = 0; i < tree.length; i++) {\n      var item = resolveForwardRef(tree[i]);\n\n      if (Array.isArray(item)) {\n        flattenArray(item, out);\n      } else {\n        out.push(item);\n      }\n    }\n  }\n\n  return out;\n}\n\nfunction dedupeArray(array) {\n  if (array) {\n    return Array.from(new Set(array));\n  }\n\n  return [];\n}\n\nfunction flattenAndDedupeArray(tree) {\n  return dedupeArray(flattenArray(tree));\n}\n\nfunction isValidType(value) {\n  return value instanceof StaticSymbol || value instanceof Type;\n}\n\nfunction extractIdentifiers(value, targetIdentifiers) {\n  visitValue(value, new _CompileValueConverter(), targetIdentifiers);\n}\n\nvar _CompileValueConverter = /*#__PURE__*/function (_ValueTransformer) {\n  _inherits(_CompileValueConverter, _ValueTransformer);\n\n  var _super103 = _createSuper(_CompileValueConverter);\n\n  function _CompileValueConverter() {\n    _classCallCheck(this, _CompileValueConverter);\n\n    return _super103.apply(this, arguments);\n  }\n\n  _createClass(_CompileValueConverter, [{\n    key: \"visitOther\",\n    value: function visitOther(value, targetIdentifiers) {\n      targetIdentifiers.push({\n        reference: value\n      });\n    }\n  }]);\n\n  return _CompileValueConverter;\n}(ValueTransformer);\n\nfunction stringifyType(type) {\n  if (type instanceof StaticSymbol) {\n    return \"\".concat(type.name, \" in \").concat(type.filePath);\n  } else {\n    return stringify(type);\n  }\n}\n/**\n * Indicates that a component is still being loaded in a synchronous compile.\n */\n\n\nfunction componentStillLoadingError(compType) {\n  var error = Error(\"Can't compile synchronously as \".concat(stringify(compType), \" is still being loaded!\"));\n  error[ERROR_COMPONENT_TYPE] = compType;\n  return error;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction providerDef(ctx, providerAst) {\n  var flags = 0\n  /* None */\n  ;\n\n  if (!providerAst.eager) {\n    flags |= 4096\n    /* LazyProvider */\n    ;\n  }\n\n  if (providerAst.providerType === ProviderAstType.PrivateService) {\n    flags |= 8192\n    /* PrivateProvider */\n    ;\n  }\n\n  if (providerAst.isModule) {\n    flags |= 1073741824\n    /* TypeModuleProvider */\n    ;\n  }\n\n  providerAst.lifecycleHooks.forEach(function (lifecycleHook) {\n    // for regular providers, we only support ngOnDestroy\n    if (lifecycleHook === LifecycleHooks.OnDestroy || providerAst.providerType === ProviderAstType.Directive || providerAst.providerType === ProviderAstType.Component) {\n      flags |= lifecycleHookToNodeFlag(lifecycleHook);\n    }\n  });\n\n  var _ref36 = providerAst.multiProvider ? multiProviderDef(ctx, flags, providerAst.providers) : singleProviderDef(ctx, flags, providerAst.providerType, providerAst.providers[0]),\n      providerExpr = _ref36.providerExpr,\n      providerFlags = _ref36.flags,\n      depsExpr = _ref36.depsExpr;\n\n  return {\n    providerExpr: providerExpr,\n    flags: providerFlags,\n    depsExpr: depsExpr,\n    tokenExpr: tokenExpr(ctx, providerAst.token)\n  };\n}\n\nfunction multiProviderDef(ctx, flags, providers) {\n  var allDepDefs = [];\n  var allParams = [];\n  var exprs = providers.map(function (provider, providerIndex) {\n    var expr;\n\n    if (provider.useClass) {\n      var depExprs = convertDeps(providerIndex, provider.deps || provider.useClass.diDeps);\n      expr = ctx.importExpr(provider.useClass.reference).instantiate(depExprs);\n    } else if (provider.useFactory) {\n      var _depExprs = convertDeps(providerIndex, provider.deps || provider.useFactory.diDeps);\n\n      expr = ctx.importExpr(provider.useFactory.reference).callFn(_depExprs);\n    } else if (provider.useExisting) {\n      var _depExprs2 = convertDeps(providerIndex, [{\n        token: provider.useExisting\n      }]);\n\n      expr = _depExprs2[0];\n    } else {\n      expr = convertValueToOutputAst(ctx, provider.useValue);\n    }\n\n    return expr;\n  });\n  var providerExpr = fn(allParams, [new ReturnStatement(literalArr(exprs))], INFERRED_TYPE);\n  return {\n    providerExpr: providerExpr,\n    flags: flags | 1024\n    /* TypeFactoryProvider */\n    ,\n    depsExpr: literalArr(allDepDefs)\n  };\n\n  function convertDeps(providerIndex, deps) {\n    return deps.map(function (dep, depIndex) {\n      var paramName = \"p\".concat(providerIndex, \"_\").concat(depIndex);\n      allParams.push(new FnParam(paramName, DYNAMIC_TYPE));\n      allDepDefs.push(depDef(ctx, dep));\n      return variable(paramName);\n    });\n  }\n}\n\nfunction singleProviderDef(ctx, flags, providerType, providerMeta) {\n  var providerExpr;\n  var deps;\n\n  if (providerType === ProviderAstType.Directive || providerType === ProviderAstType.Component) {\n    providerExpr = ctx.importExpr(providerMeta.useClass.reference);\n    flags |= 16384\n    /* TypeDirective */\n    ;\n    deps = providerMeta.deps || providerMeta.useClass.diDeps;\n  } else {\n    if (providerMeta.useClass) {\n      providerExpr = ctx.importExpr(providerMeta.useClass.reference);\n      flags |= 512\n      /* TypeClassProvider */\n      ;\n      deps = providerMeta.deps || providerMeta.useClass.diDeps;\n    } else if (providerMeta.useFactory) {\n      providerExpr = ctx.importExpr(providerMeta.useFactory.reference);\n      flags |= 1024\n      /* TypeFactoryProvider */\n      ;\n      deps = providerMeta.deps || providerMeta.useFactory.diDeps;\n    } else if (providerMeta.useExisting) {\n      providerExpr = NULL_EXPR;\n      flags |= 2048\n      /* TypeUseExistingProvider */\n      ;\n      deps = [{\n        token: providerMeta.useExisting\n      }];\n    } else {\n      providerExpr = convertValueToOutputAst(ctx, providerMeta.useValue);\n      flags |= 256\n      /* TypeValueProvider */\n      ;\n      deps = [];\n    }\n  }\n\n  var depsExpr = literalArr(deps.map(function (dep) {\n    return depDef(ctx, dep);\n  }));\n  return {\n    providerExpr: providerExpr,\n    flags: flags,\n    depsExpr: depsExpr\n  };\n}\n\nfunction tokenExpr(ctx, tokenMeta) {\n  return tokenMeta.identifier ? ctx.importExpr(tokenMeta.identifier.reference) : literal(tokenMeta.value);\n}\n\nfunction depDef(ctx, dep) {\n  // Note: the following fields have already been normalized out by provider_analyzer:\n  // - isAttribute, isHost\n  var expr = dep.isValue ? convertValueToOutputAst(ctx, dep.value) : tokenExpr(ctx, dep.token);\n  var flags = 0\n  /* None */\n  ;\n\n  if (dep.isSkipSelf) {\n    flags |= 1\n    /* SkipSelf */\n    ;\n  }\n\n  if (dep.isOptional) {\n    flags |= 2\n    /* Optional */\n    ;\n  }\n\n  if (dep.isSelf) {\n    flags |= 4\n    /* Self */\n    ;\n  }\n\n  if (dep.isValue) {\n    flags |= 8\n    /* Value */\n    ;\n  }\n\n  return flags === 0\n  /* None */\n  ? expr : literalArr([literal(flags), expr]);\n}\n\nfunction lifecycleHookToNodeFlag(lifecycleHook) {\n  var nodeFlag = 0\n  /* None */\n  ;\n\n  switch (lifecycleHook) {\n    case LifecycleHooks.AfterContentChecked:\n      nodeFlag = 2097152\n      /* AfterContentChecked */\n      ;\n      break;\n\n    case LifecycleHooks.AfterContentInit:\n      nodeFlag = 1048576\n      /* AfterContentInit */\n      ;\n      break;\n\n    case LifecycleHooks.AfterViewChecked:\n      nodeFlag = 8388608\n      /* AfterViewChecked */\n      ;\n      break;\n\n    case LifecycleHooks.AfterViewInit:\n      nodeFlag = 4194304\n      /* AfterViewInit */\n      ;\n      break;\n\n    case LifecycleHooks.DoCheck:\n      nodeFlag = 262144\n      /* DoCheck */\n      ;\n      break;\n\n    case LifecycleHooks.OnChanges:\n      nodeFlag = 524288\n      /* OnChanges */\n      ;\n      break;\n\n    case LifecycleHooks.OnDestroy:\n      nodeFlag = 131072\n      /* OnDestroy */\n      ;\n      break;\n\n    case LifecycleHooks.OnInit:\n      nodeFlag = 65536\n      /* OnInit */\n      ;\n      break;\n  }\n\n  return nodeFlag;\n}\n\nfunction componentFactoryResolverProviderDef(reflector, ctx, flags, entryComponents) {\n  var entryComponentFactories = entryComponents.map(function (entryComponent) {\n    return ctx.importExpr(entryComponent.componentFactory);\n  });\n  var token = createTokenForExternalReference(reflector, Identifiers.ComponentFactoryResolver);\n  var classMeta = {\n    diDeps: [{\n      isValue: true,\n      value: literalArr(entryComponentFactories)\n    }, {\n      token: token,\n      isSkipSelf: true,\n      isOptional: true\n    }, {\n      token: createTokenForExternalReference(reflector, Identifiers.NgModuleRef)\n    }],\n    lifecycleHooks: [],\n    reference: reflector.resolveExternalReference(Identifiers.CodegenComponentFactoryResolver)\n  };\n\n  var _singleProviderDef = singleProviderDef(ctx, flags, ProviderAstType.PrivateService, {\n    token: token,\n    multi: false,\n    useClass: classMeta\n  }),\n      providerExpr = _singleProviderDef.providerExpr,\n      providerFlags = _singleProviderDef.flags,\n      depsExpr = _singleProviderDef.depsExpr;\n\n  return {\n    providerExpr: providerExpr,\n    flags: providerFlags,\n    depsExpr: depsExpr,\n    tokenExpr: tokenExpr(ctx, token)\n  };\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar NgModuleCompileResult = /*#__PURE__*/_createClass(function NgModuleCompileResult(ngModuleFactoryVar) {\n  _classCallCheck(this, NgModuleCompileResult);\n\n  this.ngModuleFactoryVar = ngModuleFactoryVar;\n});\n\nvar LOG_VAR = variable('_l');\n\nvar NgModuleCompiler = /*#__PURE__*/function () {\n  function NgModuleCompiler(reflector) {\n    _classCallCheck(this, NgModuleCompiler);\n\n    this.reflector = reflector;\n  }\n\n  _createClass(NgModuleCompiler, [{\n    key: \"compile\",\n    value: function compile(ctx, ngModuleMeta, extraProviders) {\n      var sourceSpan = typeSourceSpan('NgModule', ngModuleMeta.type);\n      var entryComponentFactories = ngModuleMeta.transitiveModule.entryComponents;\n      var bootstrapComponents = ngModuleMeta.bootstrapComponents;\n      var providerParser = new NgModuleProviderAnalyzer(this.reflector, ngModuleMeta, extraProviders, sourceSpan);\n      var providerDefs = [componentFactoryResolverProviderDef(this.reflector, ctx, 0\n      /* None */\n      , entryComponentFactories)].concat(providerParser.parse().map(function (provider) {\n        return providerDef(ctx, provider);\n      })).map(function (_ref37) {\n        var providerExpr = _ref37.providerExpr,\n            depsExpr = _ref37.depsExpr,\n            flags = _ref37.flags,\n            tokenExpr = _ref37.tokenExpr;\n        return importExpr(Identifiers.moduleProviderDef).callFn([literal(flags), tokenExpr, providerExpr, depsExpr]);\n      });\n      var ngModuleDef = importExpr(Identifiers.moduleDef).callFn([literalArr(providerDefs)]);\n      var ngModuleDefFactory = fn([new FnParam(LOG_VAR.name)], [new ReturnStatement(ngModuleDef)], INFERRED_TYPE);\n      var ngModuleFactoryVar = \"\".concat(identifierName(ngModuleMeta.type), \"NgFactory\");\n\n      this._createNgModuleFactory(ctx, ngModuleMeta.type.reference, importExpr(Identifiers.createModuleFactory).callFn([ctx.importExpr(ngModuleMeta.type.reference), literalArr(bootstrapComponents.map(function (id) {\n        return ctx.importExpr(id.reference);\n      })), ngModuleDefFactory]));\n\n      if (ngModuleMeta.id) {\n        var id = typeof ngModuleMeta.id === 'string' ? literal(ngModuleMeta.id) : ctx.importExpr(ngModuleMeta.id);\n        var registerFactoryStmt = importExpr(Identifiers.RegisterModuleFactoryFn).callFn([id, variable(ngModuleFactoryVar)]).toStmt();\n        ctx.statements.push(registerFactoryStmt);\n      }\n\n      return new NgModuleCompileResult(ngModuleFactoryVar);\n    }\n  }, {\n    key: \"createStub\",\n    value: function createStub(ctx, ngModuleReference) {\n      this._createNgModuleFactory(ctx, ngModuleReference, NULL_EXPR);\n    }\n  }, {\n    key: \"_createNgModuleFactory\",\n    value: function _createNgModuleFactory(ctx, reference, value) {\n      var ngModuleFactoryVar = \"\".concat(identifierName({\n        reference: reference\n      }), \"NgFactory\");\n      var ngModuleFactoryStmt = variable(ngModuleFactoryVar).set(value).toDeclStmt(importType(Identifiers.NgModuleFactory, [expressionType(ctx.importExpr(reference))], [TypeModifier.Const]), [StmtModifier.Final, StmtModifier.Exported]);\n      ctx.statements.push(ngModuleFactoryStmt);\n    }\n  }]);\n\n  return NgModuleCompiler;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Resolves types to {@link NgModule}.\n */\n\n\nvar NgModuleResolver = /*#__PURE__*/function () {\n  function NgModuleResolver(_reflector) {\n    _classCallCheck(this, NgModuleResolver);\n\n    this._reflector = _reflector;\n  }\n\n  _createClass(NgModuleResolver, [{\n    key: \"isNgModule\",\n    value: function isNgModule(type) {\n      return this._reflector.annotations(type).some(createNgModule.isTypeOf);\n    }\n  }, {\n    key: \"resolve\",\n    value: function resolve(type) {\n      var throwIfNotFound = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;\n      var ngModuleMeta = findLast(this._reflector.annotations(type), createNgModule.isTypeOf);\n\n      if (ngModuleMeta) {\n        return ngModuleMeta;\n      } else {\n        if (throwIfNotFound) {\n          throw new Error(\"No NgModule metadata found for '\".concat(stringify(type), \"'.\"));\n        }\n\n        return null;\n      }\n    }\n  }]);\n\n  return NgModuleResolver;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction debugOutputAstAsTypeScript(ast) {\n  var converter = new _TsEmitterVisitor();\n  var ctx = EmitterVisitorContext.createRoot();\n  var asts = Array.isArray(ast) ? ast : [ast];\n  asts.forEach(function (ast) {\n    if (ast instanceof Statement) {\n      ast.visitStatement(converter, ctx);\n    } else if (ast instanceof Expression) {\n      ast.visitExpression(converter, ctx);\n    } else if (ast instanceof Type$1) {\n      ast.visitType(converter, ctx);\n    } else {\n      throw new Error(\"Don't know how to print debug info for \".concat(ast));\n    }\n  });\n  return ctx.toSource();\n}\n\nvar TypeScriptEmitter = /*#__PURE__*/function () {\n  function TypeScriptEmitter() {\n    _classCallCheck(this, TypeScriptEmitter);\n  }\n\n  _createClass(TypeScriptEmitter, [{\n    key: \"emitStatementsAndContext\",\n    value: function emitStatementsAndContext(genFilePath, stmts) {\n      var preamble = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : '';\n      var emitSourceMaps = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : true;\n      var referenceFilter = arguments.length > 4 ? arguments[4] : undefined;\n      var importFilter = arguments.length > 5 ? arguments[5] : undefined;\n      var converter = new _TsEmitterVisitor(referenceFilter, importFilter);\n      var ctx = EmitterVisitorContext.createRoot();\n      converter.visitAllStatements(stmts, ctx);\n      var preambleLines = preamble ? preamble.split('\\n') : [];\n      converter.reexports.forEach(function (reexports, exportedModuleName) {\n        var reexportsCode = reexports.map(function (reexport) {\n          return \"\".concat(reexport.name, \" as \").concat(reexport.as);\n        }).join(',');\n        preambleLines.push(\"export {\".concat(reexportsCode, \"} from '\").concat(exportedModuleName, \"';\"));\n      });\n      converter.importsWithPrefixes.forEach(function (prefix, importedModuleName) {\n        // Note: can't write the real word for import as it screws up system.js auto detection...\n        preambleLines.push(\"imp\" + \"ort * as \".concat(prefix, \" from '\").concat(importedModuleName, \"';\"));\n      });\n      var sm = emitSourceMaps ? ctx.toSourceMapGenerator(genFilePath, preambleLines.length).toJsComment() : '';\n      var lines = [].concat(_toConsumableArray(preambleLines), [ctx.toSource(), sm]);\n\n      if (sm) {\n        // always add a newline at the end, as some tools have bugs without it.\n        lines.push('');\n      }\n\n      ctx.setPreambleLineCount(preambleLines.length);\n      return {\n        sourceText: lines.join('\\n'),\n        context: ctx\n      };\n    }\n  }, {\n    key: \"emitStatements\",\n    value: function emitStatements(genFilePath, stmts) {\n      var preamble = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : '';\n      return this.emitStatementsAndContext(genFilePath, stmts, preamble).sourceText;\n    }\n  }]);\n\n  return TypeScriptEmitter;\n}();\n\nvar _TsEmitterVisitor = /*#__PURE__*/function (_AbstractEmitterVisit2) {\n  _inherits(_TsEmitterVisitor, _AbstractEmitterVisit2);\n\n  var _super104 = _createSuper(_TsEmitterVisitor);\n\n  function _TsEmitterVisitor(referenceFilter, importFilter) {\n    var _this226;\n\n    _classCallCheck(this, _TsEmitterVisitor);\n\n    _this226 = _super104.call(this, false);\n    _this226.referenceFilter = referenceFilter;\n    _this226.importFilter = importFilter;\n    _this226.typeExpression = 0;\n    _this226.importsWithPrefixes = new Map();\n    _this226.reexports = new Map();\n    return _this226;\n  }\n\n  _createClass(_TsEmitterVisitor, [{\n    key: \"visitType\",\n    value: function visitType(t, ctx) {\n      var defaultType = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 'any';\n\n      if (t) {\n        this.typeExpression++;\n        t.visitType(this, ctx);\n        this.typeExpression--;\n      } else {\n        ctx.print(null, defaultType);\n      }\n    }\n  }, {\n    key: \"visitLiteralExpr\",\n    value: function visitLiteralExpr(ast, ctx) {\n      var value = ast.value;\n\n      if (value == null && ast.type != INFERRED_TYPE) {\n        ctx.print(ast, \"(\".concat(value, \" as any)\"));\n        return null;\n      }\n\n      return _get(_getPrototypeOf(_TsEmitterVisitor.prototype), \"visitLiteralExpr\", this).call(this, ast, ctx);\n    } // Temporary workaround to support strictNullCheck enabled consumers of ngc emit.\n    // In SNC mode, [] have the type never[], so we cast here to any[].\n    // TODO: narrow the cast to a more explicit type, or use a pattern that does not\n    // start with [].concat. see https://github.com/angular/angular/pull/11846\n\n  }, {\n    key: \"visitLiteralArrayExpr\",\n    value: function visitLiteralArrayExpr(ast, ctx) {\n      if (ast.entries.length === 0) {\n        ctx.print(ast, '(');\n      }\n\n      var result = _get(_getPrototypeOf(_TsEmitterVisitor.prototype), \"visitLiteralArrayExpr\", this).call(this, ast, ctx);\n\n      if (ast.entries.length === 0) {\n        ctx.print(ast, ' as any[])');\n      }\n\n      return result;\n    }\n  }, {\n    key: \"visitExternalExpr\",\n    value: function visitExternalExpr(ast, ctx) {\n      this._visitIdentifier(ast.value, ast.typeParams, ctx);\n\n      return null;\n    }\n  }, {\n    key: \"visitAssertNotNullExpr\",\n    value: function visitAssertNotNullExpr(ast, ctx) {\n      var result = _get(_getPrototypeOf(_TsEmitterVisitor.prototype), \"visitAssertNotNullExpr\", this).call(this, ast, ctx);\n\n      ctx.print(ast, '!');\n      return result;\n    }\n  }, {\n    key: \"visitDeclareVarStmt\",\n    value: function visitDeclareVarStmt(stmt, ctx) {\n      if (stmt.hasModifier(StmtModifier.Exported) && stmt.value instanceof ExternalExpr && !stmt.type) {\n        // check for a reexport\n        var _stmt$value$value = stmt.value.value,\n            name = _stmt$value$value.name,\n            moduleName = _stmt$value$value.moduleName;\n\n        if (moduleName) {\n          var reexports = this.reexports.get(moduleName);\n\n          if (!reexports) {\n            reexports = [];\n            this.reexports.set(moduleName, reexports);\n          }\n\n          reexports.push({\n            name: name,\n            as: stmt.name\n          });\n          return null;\n        }\n      }\n\n      if (stmt.hasModifier(StmtModifier.Exported)) {\n        ctx.print(stmt, \"export \");\n      }\n\n      if (stmt.hasModifier(StmtModifier.Final)) {\n        ctx.print(stmt, \"const\");\n      } else {\n        ctx.print(stmt, \"var\");\n      }\n\n      ctx.print(stmt, \" \".concat(stmt.name));\n\n      this._printColonType(stmt.type, ctx);\n\n      if (stmt.value) {\n        ctx.print(stmt, \" = \");\n        stmt.value.visitExpression(this, ctx);\n      }\n\n      ctx.println(stmt, \";\");\n      return null;\n    }\n  }, {\n    key: \"visitWrappedNodeExpr\",\n    value: function visitWrappedNodeExpr(ast, ctx) {\n      throw new Error('Cannot visit a WrappedNodeExpr when outputting Typescript.');\n    }\n  }, {\n    key: \"visitCastExpr\",\n    value: function visitCastExpr(ast, ctx) {\n      ctx.print(ast, \"(<\");\n      ast.type.visitType(this, ctx);\n      ctx.print(ast, \">\");\n      ast.value.visitExpression(this, ctx);\n      ctx.print(ast, \")\");\n      return null;\n    }\n  }, {\n    key: \"visitInstantiateExpr\",\n    value: function visitInstantiateExpr(ast, ctx) {\n      ctx.print(ast, \"new \");\n      this.typeExpression++;\n      ast.classExpr.visitExpression(this, ctx);\n      this.typeExpression--;\n      ctx.print(ast, \"(\");\n      this.visitAllExpressions(ast.args, ctx, ',');\n      ctx.print(ast, \")\");\n      return null;\n    }\n  }, {\n    key: \"visitDeclareClassStmt\",\n    value: function visitDeclareClassStmt(stmt, ctx) {\n      var _this227 = this;\n\n      ctx.pushClass(stmt);\n\n      if (stmt.hasModifier(StmtModifier.Exported)) {\n        ctx.print(stmt, \"export \");\n      }\n\n      ctx.print(stmt, \"class \".concat(stmt.name));\n\n      if (stmt.parent != null) {\n        ctx.print(stmt, \" extends \");\n        this.typeExpression++;\n        stmt.parent.visitExpression(this, ctx);\n        this.typeExpression--;\n      }\n\n      ctx.println(stmt, \" {\");\n      ctx.incIndent();\n      stmt.fields.forEach(function (field) {\n        return _this227._visitClassField(field, ctx);\n      });\n\n      if (stmt.constructorMethod != null) {\n        this._visitClassConstructor(stmt, ctx);\n      }\n\n      stmt.getters.forEach(function (getter) {\n        return _this227._visitClassGetter(getter, ctx);\n      });\n      stmt.methods.forEach(function (method) {\n        return _this227._visitClassMethod(method, ctx);\n      });\n      ctx.decIndent();\n      ctx.println(stmt, \"}\");\n      ctx.popClass();\n      return null;\n    }\n  }, {\n    key: \"_visitClassField\",\n    value: function _visitClassField(field, ctx) {\n      if (field.hasModifier(StmtModifier.Private)) {\n        // comment out as a workaround for #10967\n        ctx.print(null, \"/*private*/ \");\n      }\n\n      if (field.hasModifier(StmtModifier.Static)) {\n        ctx.print(null, 'static ');\n      }\n\n      ctx.print(null, field.name);\n\n      this._printColonType(field.type, ctx);\n\n      if (field.initializer) {\n        ctx.print(null, ' = ');\n        field.initializer.visitExpression(this, ctx);\n      }\n\n      ctx.println(null, \";\");\n    }\n  }, {\n    key: \"_visitClassGetter\",\n    value: function _visitClassGetter(getter, ctx) {\n      if (getter.hasModifier(StmtModifier.Private)) {\n        ctx.print(null, \"private \");\n      }\n\n      ctx.print(null, \"get \".concat(getter.name, \"()\"));\n\n      this._printColonType(getter.type, ctx);\n\n      ctx.println(null, \" {\");\n      ctx.incIndent();\n      this.visitAllStatements(getter.body, ctx);\n      ctx.decIndent();\n      ctx.println(null, \"}\");\n    }\n  }, {\n    key: \"_visitClassConstructor\",\n    value: function _visitClassConstructor(stmt, ctx) {\n      ctx.print(stmt, \"constructor(\");\n\n      this._visitParams(stmt.constructorMethod.params, ctx);\n\n      ctx.println(stmt, \") {\");\n      ctx.incIndent();\n      this.visitAllStatements(stmt.constructorMethod.body, ctx);\n      ctx.decIndent();\n      ctx.println(stmt, \"}\");\n    }\n  }, {\n    key: \"_visitClassMethod\",\n    value: function _visitClassMethod(method, ctx) {\n      if (method.hasModifier(StmtModifier.Private)) {\n        ctx.print(null, \"private \");\n      }\n\n      ctx.print(null, \"\".concat(method.name, \"(\"));\n\n      this._visitParams(method.params, ctx);\n\n      ctx.print(null, \")\");\n\n      this._printColonType(method.type, ctx, 'void');\n\n      ctx.println(null, \" {\");\n      ctx.incIndent();\n      this.visitAllStatements(method.body, ctx);\n      ctx.decIndent();\n      ctx.println(null, \"}\");\n    }\n  }, {\n    key: \"visitFunctionExpr\",\n    value: function visitFunctionExpr(ast, ctx) {\n      if (ast.name) {\n        ctx.print(ast, 'function ');\n        ctx.print(ast, ast.name);\n      }\n\n      ctx.print(ast, \"(\");\n\n      this._visitParams(ast.params, ctx);\n\n      ctx.print(ast, \")\");\n\n      this._printColonType(ast.type, ctx, 'void');\n\n      if (!ast.name) {\n        ctx.print(ast, \" => \");\n      }\n\n      ctx.println(ast, '{');\n      ctx.incIndent();\n      this.visitAllStatements(ast.statements, ctx);\n      ctx.decIndent();\n      ctx.print(ast, \"}\");\n      return null;\n    }\n  }, {\n    key: \"visitDeclareFunctionStmt\",\n    value: function visitDeclareFunctionStmt(stmt, ctx) {\n      if (stmt.hasModifier(StmtModifier.Exported)) {\n        ctx.print(stmt, \"export \");\n      }\n\n      ctx.print(stmt, \"function \".concat(stmt.name, \"(\"));\n\n      this._visitParams(stmt.params, ctx);\n\n      ctx.print(stmt, \")\");\n\n      this._printColonType(stmt.type, ctx, 'void');\n\n      ctx.println(stmt, \" {\");\n      ctx.incIndent();\n      this.visitAllStatements(stmt.statements, ctx);\n      ctx.decIndent();\n      ctx.println(stmt, \"}\");\n      return null;\n    }\n  }, {\n    key: \"visitTryCatchStmt\",\n    value: function visitTryCatchStmt(stmt, ctx) {\n      ctx.println(stmt, \"try {\");\n      ctx.incIndent();\n      this.visitAllStatements(stmt.bodyStmts, ctx);\n      ctx.decIndent();\n      ctx.println(stmt, \"} catch (\".concat(CATCH_ERROR_VAR$1.name, \") {\"));\n      ctx.incIndent();\n      var catchStmts = [CATCH_STACK_VAR$1.set(CATCH_ERROR_VAR$1.prop('stack', null)).toDeclStmt(null, [StmtModifier.Final])].concat(stmt.catchStmts);\n      this.visitAllStatements(catchStmts, ctx);\n      ctx.decIndent();\n      ctx.println(stmt, \"}\");\n      return null;\n    }\n  }, {\n    key: \"visitBuiltinType\",\n    value: function visitBuiltinType(type, ctx) {\n      var typeStr;\n\n      switch (type.name) {\n        case BuiltinTypeName.Bool:\n          typeStr = 'boolean';\n          break;\n\n        case BuiltinTypeName.Dynamic:\n          typeStr = 'any';\n          break;\n\n        case BuiltinTypeName.Function:\n          typeStr = 'Function';\n          break;\n\n        case BuiltinTypeName.Number:\n          typeStr = 'number';\n          break;\n\n        case BuiltinTypeName.Int:\n          typeStr = 'number';\n          break;\n\n        case BuiltinTypeName.String:\n          typeStr = 'string';\n          break;\n\n        case BuiltinTypeName.None:\n          typeStr = 'never';\n          break;\n\n        default:\n          throw new Error(\"Unsupported builtin type \".concat(type.name));\n      }\n\n      ctx.print(null, typeStr);\n      return null;\n    }\n  }, {\n    key: \"visitExpressionType\",\n    value: function visitExpressionType(ast, ctx) {\n      var _this228 = this;\n\n      ast.value.visitExpression(this, ctx);\n\n      if (ast.typeParams !== null) {\n        ctx.print(null, '<');\n        this.visitAllObjects(function (type) {\n          return _this228.visitType(type, ctx);\n        }, ast.typeParams, ctx, ',');\n        ctx.print(null, '>');\n      }\n\n      return null;\n    }\n  }, {\n    key: \"visitArrayType\",\n    value: function visitArrayType(type, ctx) {\n      this.visitType(type.of, ctx);\n      ctx.print(null, \"[]\");\n      return null;\n    }\n  }, {\n    key: \"visitMapType\",\n    value: function visitMapType(type, ctx) {\n      ctx.print(null, \"{[key: string]:\");\n      this.visitType(type.valueType, ctx);\n      ctx.print(null, \"}\");\n      return null;\n    }\n  }, {\n    key: \"getBuiltinMethodName\",\n    value: function getBuiltinMethodName(method) {\n      var name;\n\n      switch (method) {\n        case BuiltinMethod.ConcatArray:\n          name = 'concat';\n          break;\n\n        case BuiltinMethod.SubscribeObservable:\n          name = 'subscribe';\n          break;\n\n        case BuiltinMethod.Bind:\n          name = 'bind';\n          break;\n\n        default:\n          throw new Error(\"Unknown builtin method: \".concat(method));\n      }\n\n      return name;\n    }\n  }, {\n    key: \"_visitParams\",\n    value: function _visitParams(params, ctx) {\n      var _this229 = this;\n\n      this.visitAllObjects(function (param) {\n        ctx.print(null, param.name);\n\n        _this229._printColonType(param.type, ctx);\n      }, params, ctx, ',');\n    }\n  }, {\n    key: \"_visitIdentifier\",\n    value: function _visitIdentifier(value, typeParams, ctx) {\n      var _this230 = this;\n\n      var name = value.name,\n          moduleName = value.moduleName;\n\n      if (this.referenceFilter && this.referenceFilter(value)) {\n        ctx.print(null, '(null as any)');\n        return;\n      }\n\n      if (moduleName && (!this.importFilter || !this.importFilter(value))) {\n        var prefix = this.importsWithPrefixes.get(moduleName);\n\n        if (prefix == null) {\n          prefix = \"i\".concat(this.importsWithPrefixes.size);\n          this.importsWithPrefixes.set(moduleName, prefix);\n        }\n\n        ctx.print(null, \"\".concat(prefix, \".\"));\n      }\n\n      ctx.print(null, name);\n\n      if (this.typeExpression > 0) {\n        // If we are in a type expression that refers to a generic type then supply\n        // the required type parameters. If there were not enough type parameters\n        // supplied, supply any as the type. Outside a type expression the reference\n        // should not supply type parameters and be treated as a simple value reference\n        // to the constructor function itself.\n        var suppliedParameters = typeParams || [];\n\n        if (suppliedParameters.length > 0) {\n          ctx.print(null, \"<\");\n          this.visitAllObjects(function (type) {\n            return type.visitType(_this230, ctx);\n          }, typeParams, ctx, ',');\n          ctx.print(null, \">\");\n        }\n      }\n    }\n  }, {\n    key: \"_printColonType\",\n    value: function _printColonType(type, ctx, defaultType) {\n      if (type !== INFERRED_TYPE) {\n        ctx.print(null, ':');\n        this.visitType(type, ctx, defaultType);\n      }\n    }\n  }]);\n\n  return _TsEmitterVisitor;\n}(AbstractEmitterVisitor);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Resolve a `Type` for {@link Pipe}.\n *\n * This interface can be overridden by the application developer to create custom behavior.\n *\n * See {@link Compiler}\n */\n\n\nvar PipeResolver = /*#__PURE__*/function () {\n  function PipeResolver(_reflector) {\n    _classCallCheck(this, PipeResolver);\n\n    this._reflector = _reflector;\n  }\n\n  _createClass(PipeResolver, [{\n    key: \"isPipe\",\n    value: function isPipe(type) {\n      var typeMetadata = this._reflector.annotations(resolveForwardRef(type));\n\n      return typeMetadata && typeMetadata.some(createPipe.isTypeOf);\n    }\n    /**\n     * Return {@link Pipe} for a given `Type`.\n     */\n\n  }, {\n    key: \"resolve\",\n    value: function resolve(type) {\n      var throwIfNotFound = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;\n\n      var metas = this._reflector.annotations(resolveForwardRef(type));\n\n      if (metas) {\n        var annotation = findLast(metas, createPipe.isTypeOf);\n\n        if (annotation) {\n          return annotation;\n        }\n      }\n\n      if (throwIfNotFound) {\n        throw new Error(\"No Pipe decorator found on \".concat(stringify(type)));\n      }\n\n      return null;\n    }\n  }]);\n\n  return PipeResolver;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generates code that is used to type check templates.\n */\n\n\nvar TypeCheckCompiler = /*#__PURE__*/function () {\n  function TypeCheckCompiler(options, reflector) {\n    _classCallCheck(this, TypeCheckCompiler);\n\n    this.options = options;\n    this.reflector = reflector;\n  }\n  /**\n   * Important notes:\n   * - This must not produce new `import` statements, but only refer to types outside\n   *   of the file via the variables provided via externalReferenceVars.\n   *   This allows Typescript to reuse the old program's structure as no imports have changed.\n   * - This must not produce any exports, as this would pollute the .d.ts file\n   *   and also violate the point above.\n   */\n\n\n  _createClass(TypeCheckCompiler, [{\n    key: \"compileComponent\",\n    value: function compileComponent(componentId, component, template, usedPipes, externalReferenceVars, ctx) {\n      var _this231 = this;\n\n      var pipes = new Map();\n      usedPipes.forEach(function (p) {\n        return pipes.set(p.name, p.type.reference);\n      });\n      var embeddedViewCount = 0;\n\n      var viewBuilderFactory = function viewBuilderFactory(parent, guards) {\n        var embeddedViewIndex = embeddedViewCount++;\n        return new ViewBuilder(_this231.options, _this231.reflector, externalReferenceVars, parent, component.type.reference, component.isHost, embeddedViewIndex, pipes, guards, ctx, viewBuilderFactory);\n      };\n\n      var visitor = viewBuilderFactory(null, []);\n      visitor.visitAll([], template);\n      return visitor.build(componentId);\n    }\n  }]);\n\n  return TypeCheckCompiler;\n}();\n\nvar DYNAMIC_VAR_NAME = '_any';\n\nvar TypeCheckLocalResolver = /*#__PURE__*/function () {\n  function TypeCheckLocalResolver() {\n    _classCallCheck(this, TypeCheckLocalResolver);\n  }\n\n  _createClass(TypeCheckLocalResolver, [{\n    key: \"notifyImplicitReceiverUse\",\n    value: function notifyImplicitReceiverUse() {}\n  }, {\n    key: \"getLocal\",\n    value: function getLocal(name) {\n      if (name === EventHandlerVars.event.name) {\n        // References to the event should not be type-checked.\n        // TODO(chuckj): determine a better type for the event.\n        return variable(DYNAMIC_VAR_NAME);\n      }\n\n      return null;\n    }\n  }]);\n\n  return TypeCheckLocalResolver;\n}();\n\nvar defaultResolver = new TypeCheckLocalResolver();\n\nvar ViewBuilder = /*#__PURE__*/function () {\n  function ViewBuilder(options, reflector, externalReferenceVars, parent, component, isHostComponent, embeddedViewIndex, pipes, guards, ctx, viewBuilderFactory) {\n    _classCallCheck(this, ViewBuilder);\n\n    this.options = options;\n    this.reflector = reflector;\n    this.externalReferenceVars = externalReferenceVars;\n    this.parent = parent;\n    this.component = component;\n    this.isHostComponent = isHostComponent;\n    this.embeddedViewIndex = embeddedViewIndex;\n    this.pipes = pipes;\n    this.guards = guards;\n    this.ctx = ctx;\n    this.viewBuilderFactory = viewBuilderFactory;\n    this.refOutputVars = new Map();\n    this.variables = [];\n    this.children = [];\n    this.updates = [];\n    this.actions = [];\n  }\n\n  _createClass(ViewBuilder, [{\n    key: \"getOutputVar\",\n    value: function getOutputVar(type) {\n      var varName;\n\n      if (type === this.component && this.isHostComponent) {\n        varName = DYNAMIC_VAR_NAME;\n      } else if (type instanceof StaticSymbol) {\n        varName = this.externalReferenceVars.get(type);\n      } else {\n        varName = DYNAMIC_VAR_NAME;\n      }\n\n      if (!varName) {\n        throw new Error(\"Illegal State: referring to a type without a variable \".concat(JSON.stringify(type)));\n      }\n\n      return varName;\n    }\n  }, {\n    key: \"getTypeGuardExpressions\",\n    value: function getTypeGuardExpressions(ast) {\n      var result = _toConsumableArray(this.guards);\n\n      var _iterator21 = _createForOfIteratorHelper(ast.directives),\n          _step21;\n\n      try {\n        for (_iterator21.s(); !(_step21 = _iterator21.n()).done;) {\n          var directive = _step21.value;\n\n          var _iterator22 = _createForOfIteratorHelper(directive.inputs),\n              _step22;\n\n          try {\n            for (_iterator22.s(); !(_step22 = _iterator22.n()).done;) {\n              var input = _step22.value;\n              var guard = directive.directive.guards[input.directiveName];\n\n              if (guard) {\n                var useIf = guard === 'UseIf';\n                result.push({\n                  guard: guard,\n                  useIf: useIf,\n                  expression: {\n                    context: this.component,\n                    value: input.value,\n                    sourceSpan: input.sourceSpan\n                  }\n                });\n              }\n            }\n          } catch (err) {\n            _iterator22.e(err);\n          } finally {\n            _iterator22.f();\n          }\n        }\n      } catch (err) {\n        _iterator21.e(err);\n      } finally {\n        _iterator21.f();\n      }\n\n      return result;\n    }\n  }, {\n    key: \"visitAll\",\n    value: function visitAll(variables, astNodes) {\n      this.variables = variables;\n      templateVisitAll(this, astNodes);\n    }\n  }, {\n    key: \"build\",\n    value: function build(componentId) {\n      var _this232 = this;\n\n      var targetStatements = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];\n      this.children.forEach(function (child) {\n        return child.build(componentId, targetStatements);\n      });\n      var viewStmts = [variable(DYNAMIC_VAR_NAME).set(NULL_EXPR).toDeclStmt(DYNAMIC_TYPE)];\n      var bindingCount = 0;\n      this.updates.forEach(function (expression) {\n        var _viewStmts;\n\n        var _this232$preprocessUp = _this232.preprocessUpdateExpression(expression),\n            sourceSpan = _this232$preprocessUp.sourceSpan,\n            context = _this232$preprocessUp.context,\n            value = _this232$preprocessUp.value;\n\n        var bindingId = \"\".concat(bindingCount++);\n        var nameResolver = context === _this232.component ? _this232 : defaultResolver;\n\n        var _convertPropertyBindi = _convertPropertyBinding(nameResolver, variable(_this232.getOutputVar(context)), value, bindingId, BindingForm.General),\n            stmts = _convertPropertyBindi.stmts,\n            currValExpr = _convertPropertyBindi.currValExpr;\n\n        stmts.push(new ExpressionStatement(currValExpr));\n\n        (_viewStmts = viewStmts).push.apply(_viewStmts, _toConsumableArray(stmts.map(function (stmt) {\n          return applySourceSpanToStatementIfNeeded(stmt, sourceSpan);\n        })));\n      });\n      this.actions.forEach(function (_ref38) {\n        var _viewStmts2;\n\n        var sourceSpan = _ref38.sourceSpan,\n            context = _ref38.context,\n            value = _ref38.value;\n        var bindingId = \"\".concat(bindingCount++);\n        var nameResolver = context === _this232.component ? _this232 : defaultResolver;\n\n        var _convertActionBinding = convertActionBinding(nameResolver, variable(_this232.getOutputVar(context)), value, bindingId),\n            stmts = _convertActionBinding.stmts;\n\n        (_viewStmts2 = viewStmts).push.apply(_viewStmts2, _toConsumableArray(stmts.map(function (stmt) {\n          return applySourceSpanToStatementIfNeeded(stmt, sourceSpan);\n        })));\n      });\n\n      if (this.guards.length) {\n        var guardExpression = undefined;\n\n        var _iterator23 = _createForOfIteratorHelper(this.guards),\n            _step23;\n\n        try {\n          for (_iterator23.s(); !(_step23 = _iterator23.n()).done;) {\n            var guard = _step23.value;\n\n            var _this$preprocessUpdat = this.preprocessUpdateExpression(guard.expression),\n                context = _this$preprocessUpdat.context,\n                value = _this$preprocessUpdat.value;\n\n            var bindingId = \"\".concat(bindingCount++);\n            var nameResolver = context === this.component ? this : defaultResolver; // We only support support simple expressions and ignore others as they\n            // are unlikely to affect type narrowing.\n\n            var _convertPropertyBindi2 = _convertPropertyBinding(nameResolver, variable(this.getOutputVar(context)), value, bindingId, BindingForm.TrySimple),\n                stmts = _convertPropertyBindi2.stmts,\n                currValExpr = _convertPropertyBindi2.currValExpr;\n\n            if (stmts.length == 0) {\n              var guardClause = guard.useIf ? currValExpr : this.ctx.importExpr(guard.guard).callFn([currValExpr]);\n              guardExpression = guardExpression ? guardExpression.and(guardClause) : guardClause;\n            }\n          }\n        } catch (err) {\n          _iterator23.e(err);\n        } finally {\n          _iterator23.f();\n        }\n\n        if (guardExpression) {\n          viewStmts = [new IfStmt(guardExpression, viewStmts)];\n        }\n      }\n\n      var viewName = \"_View_\".concat(componentId, \"_\").concat(this.embeddedViewIndex);\n      var viewFactory = new DeclareFunctionStmt(viewName, [], viewStmts);\n      targetStatements.push(viewFactory);\n      return targetStatements;\n    }\n  }, {\n    key: \"visitBoundText\",\n    value: function visitBoundText(ast, context) {\n      var _this233 = this;\n\n      var astWithSource = ast.value;\n      var inter = astWithSource.ast;\n      inter.expressions.forEach(function (expr) {\n        return _this233.updates.push({\n          context: _this233.component,\n          value: expr,\n          sourceSpan: ast.sourceSpan\n        });\n      });\n    }\n  }, {\n    key: \"visitEmbeddedTemplate\",\n    value: function visitEmbeddedTemplate(ast, context) {\n      this.visitElementOrTemplate(ast); // Note: The old view compiler used to use an `any` type\n      // for the context in any embedded view.\n      // We keep this behaivor behind a flag for now.\n\n      if (this.options.fullTemplateTypeCheck) {\n        // Find any applicable type guards. For example, NgIf has a type guard on ngIf\n        // (see NgIf.ngIfTypeGuard) that can be used to indicate that a template is only\n        // stamped out if ngIf is truthy so any bindings in the template can assume that,\n        // if a nullable type is used for ngIf, that expression is not null or undefined.\n        var guards = this.getTypeGuardExpressions(ast);\n        var childVisitor = this.viewBuilderFactory(this, guards);\n        this.children.push(childVisitor);\n        childVisitor.visitAll(ast.variables, ast.children);\n      }\n    }\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(ast, context) {\n      var _this234 = this;\n\n      this.visitElementOrTemplate(ast);\n      var inputDefs = [];\n      var updateRendererExpressions = [];\n      var outputDefs = [];\n      ast.inputs.forEach(function (inputAst) {\n        _this234.updates.push({\n          context: _this234.component,\n          value: inputAst.value,\n          sourceSpan: inputAst.sourceSpan\n        });\n      });\n      templateVisitAll(this, ast.children);\n    }\n  }, {\n    key: \"visitElementOrTemplate\",\n    value: function visitElementOrTemplate(ast) {\n      var _this235 = this;\n\n      ast.directives.forEach(function (dirAst) {\n        _this235.visitDirective(dirAst);\n      });\n      ast.references.forEach(function (ref) {\n        var outputVarType = null; // Note: The old view compiler used to use an `any` type\n        // for directives exposed via `exportAs`.\n        // We keep this behaivor behind a flag for now.\n\n        if (ref.value && ref.value.identifier && _this235.options.fullTemplateTypeCheck) {\n          outputVarType = ref.value.identifier.reference;\n        } else {\n          outputVarType = BuiltinTypeName.Dynamic;\n        }\n\n        _this235.refOutputVars.set(ref.name, outputVarType);\n      });\n      ast.outputs.forEach(function (outputAst) {\n        _this235.actions.push({\n          context: _this235.component,\n          value: outputAst.handler,\n          sourceSpan: outputAst.sourceSpan\n        });\n      });\n    }\n  }, {\n    key: \"visitDirective\",\n    value: function visitDirective(dirAst) {\n      var _this236 = this;\n\n      var dirType = dirAst.directive.type.reference;\n      dirAst.inputs.forEach(function (input) {\n        return _this236.updates.push({\n          context: _this236.component,\n          value: input.value,\n          sourceSpan: input.sourceSpan\n        });\n      }); // Note: The old view compiler used to use an `any` type\n      // for expressions in host properties / events.\n      // We keep this behaivor behind a flag for now.\n\n      if (this.options.fullTemplateTypeCheck) {\n        dirAst.hostProperties.forEach(function (inputAst) {\n          return _this236.updates.push({\n            context: dirType,\n            value: inputAst.value,\n            sourceSpan: inputAst.sourceSpan\n          });\n        });\n        dirAst.hostEvents.forEach(function (hostEventAst) {\n          return _this236.actions.push({\n            context: dirType,\n            value: hostEventAst.handler,\n            sourceSpan: hostEventAst.sourceSpan\n          });\n        });\n      }\n    }\n  }, {\n    key: \"notifyImplicitReceiverUse\",\n    value: function notifyImplicitReceiverUse() {}\n  }, {\n    key: \"getLocal\",\n    value: function getLocal(name) {\n      if (name == EventHandlerVars.event.name) {\n        return variable(this.getOutputVar(BuiltinTypeName.Dynamic));\n      }\n\n      for (var currBuilder = this; currBuilder; currBuilder = currBuilder.parent) {\n        var outputVarType = void 0; // check references\n\n        outputVarType = currBuilder.refOutputVars.get(name);\n\n        if (outputVarType == null) {\n          // check variables\n          var varAst = currBuilder.variables.find(function (varAst) {\n            return varAst.name === name;\n          });\n\n          if (varAst) {\n            outputVarType = BuiltinTypeName.Dynamic;\n          }\n        }\n\n        if (outputVarType != null) {\n          return variable(this.getOutputVar(outputVarType));\n        }\n      }\n\n      return null;\n    }\n  }, {\n    key: \"pipeOutputVar\",\n    value: function pipeOutputVar(name) {\n      var pipe = this.pipes.get(name);\n\n      if (!pipe) {\n        throw new Error(\"Illegal State: Could not find pipe \".concat(name, \" in template of \").concat(this.component));\n      }\n\n      return this.getOutputVar(pipe);\n    }\n  }, {\n    key: \"preprocessUpdateExpression\",\n    value: function preprocessUpdateExpression(expression) {\n      var _this237 = this;\n\n      return {\n        sourceSpan: expression.sourceSpan,\n        context: expression.context,\n        value: convertPropertyBindingBuiltins({\n          createLiteralArrayConverter: function createLiteralArrayConverter(argCount) {\n            return function (args) {\n              var arr = literalArr(args); // Note: The old view compiler used to use an `any` type\n              // for arrays.\n\n              return _this237.options.fullTemplateTypeCheck ? arr : arr.cast(DYNAMIC_TYPE);\n            };\n          },\n          createLiteralMapConverter: function createLiteralMapConverter(keys) {\n            return function (values) {\n              var entries = keys.map(function (k, i) {\n                return {\n                  key: k.key,\n                  value: values[i],\n                  quoted: k.quoted\n                };\n              });\n              var map = literalMap(entries); // Note: The old view compiler used to use an `any` type\n              // for maps.\n\n              return _this237.options.fullTemplateTypeCheck ? map : map.cast(DYNAMIC_TYPE);\n            };\n          },\n          createPipeConverter: function createPipeConverter(name, argCount) {\n            return function (args) {\n              // Note: The old view compiler used to use an `any` type\n              // for pipes.\n              var pipeExpr = _this237.options.fullTemplateTypeCheck ? variable(_this237.pipeOutputVar(name)) : variable(_this237.getOutputVar(BuiltinTypeName.Dynamic));\n              return pipeExpr.callMethod('transform', args);\n            };\n          }\n        }, expression.value)\n      };\n    }\n  }, {\n    key: \"visitNgContent\",\n    value: function visitNgContent(ast, context) {}\n  }, {\n    key: \"visitText\",\n    value: function visitText(ast, context) {}\n  }, {\n    key: \"visitDirectiveProperty\",\n    value: function visitDirectiveProperty(ast, context) {}\n  }, {\n    key: \"visitReference\",\n    value: function visitReference(ast, context) {}\n  }, {\n    key: \"visitVariable\",\n    value: function visitVariable(ast, context) {}\n  }, {\n    key: \"visitEvent\",\n    value: function visitEvent(ast, context) {}\n  }, {\n    key: \"visitElementProperty\",\n    value: function visitElementProperty(ast, context) {}\n  }, {\n    key: \"visitAttr\",\n    value: function visitAttr(ast, context) {}\n  }]);\n\n  return ViewBuilder;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar CLASS_ATTR$1 = 'class';\nvar STYLE_ATTR = 'style';\nvar IMPLICIT_TEMPLATE_VAR = '\\$implicit';\n\nvar ViewCompileResult = /*#__PURE__*/_createClass(function ViewCompileResult(viewClassVar, rendererTypeVar) {\n  _classCallCheck(this, ViewCompileResult);\n\n  this.viewClassVar = viewClassVar;\n  this.rendererTypeVar = rendererTypeVar;\n});\n\nvar ViewCompiler = /*#__PURE__*/function () {\n  function ViewCompiler(_reflector) {\n    _classCallCheck(this, ViewCompiler);\n\n    this._reflector = _reflector;\n  }\n\n  _createClass(ViewCompiler, [{\n    key: \"compileComponent\",\n    value: function compileComponent(outputCtx, component, template, styles, usedPipes) {\n      var _this238 = this,\n          _outputCtx$statements;\n\n      var embeddedViewCount = 0;\n      var renderComponentVarName = undefined;\n\n      if (!component.isHost) {\n        var _template = component.template;\n        var customRenderData = [];\n\n        if (_template.animations && _template.animations.length) {\n          customRenderData.push(new LiteralMapEntry('animation', convertValueToOutputAst(outputCtx, _template.animations), true));\n        }\n\n        var renderComponentVar = variable(rendererTypeName(component.type.reference));\n        renderComponentVarName = renderComponentVar.name;\n        outputCtx.statements.push(renderComponentVar.set(importExpr(Identifiers.createRendererType2).callFn([new LiteralMapExpr([new LiteralMapEntry('encapsulation', literal(_template.encapsulation), false), new LiteralMapEntry('styles', styles, false), new LiteralMapEntry('data', new LiteralMapExpr(customRenderData), false)])])).toDeclStmt(importType(Identifiers.RendererType2), [StmtModifier.Final, StmtModifier.Exported]));\n      }\n\n      var viewBuilderFactory = function viewBuilderFactory(parent) {\n        var embeddedViewIndex = embeddedViewCount++;\n        return new ViewBuilder$1(_this238._reflector, outputCtx, parent, component, embeddedViewIndex, usedPipes, viewBuilderFactory);\n      };\n\n      var visitor = viewBuilderFactory(null);\n      visitor.visitAll([], template);\n\n      (_outputCtx$statements = outputCtx.statements).push.apply(_outputCtx$statements, _toConsumableArray(visitor.build()));\n\n      return new ViewCompileResult(visitor.viewName, renderComponentVarName);\n    }\n  }]);\n\n  return ViewCompiler;\n}();\n\nvar LOG_VAR$1 = variable('_l');\nvar VIEW_VAR = variable('_v');\nvar CHECK_VAR = variable('_ck');\nvar COMP_VAR = variable('_co');\nvar EVENT_NAME_VAR = variable('en');\nvar ALLOW_DEFAULT_VAR = variable(\"ad\");\n\nvar ViewBuilder$1 = /*#__PURE__*/function () {\n  function ViewBuilder$1(reflector, outputCtx, parent, component, embeddedViewIndex, usedPipes, viewBuilderFactory) {\n    _classCallCheck(this, ViewBuilder$1);\n\n    this.reflector = reflector;\n    this.outputCtx = outputCtx;\n    this.parent = parent;\n    this.component = component;\n    this.embeddedViewIndex = embeddedViewIndex;\n    this.usedPipes = usedPipes;\n    this.viewBuilderFactory = viewBuilderFactory;\n    this.nodes = [];\n    this.purePipeNodeIndices = Object.create(null); // Need Object.create so that we don't have builtin values...\n\n    this.refNodeIndices = Object.create(null);\n    this.variables = [];\n    this.children = []; // TODO(tbosch): The old view compiler used to use an `any` type\n    // for the context in any embedded view. We keep this behaivor for now\n    // to be able to introduce the new view compiler without too many errors.\n\n    this.compType = this.embeddedViewIndex > 0 ? DYNAMIC_TYPE : expressionType(outputCtx.importExpr(this.component.type.reference));\n    this.viewName = viewClassName(this.component.type.reference, this.embeddedViewIndex);\n  }\n\n  _createClass(ViewBuilder$1, [{\n    key: \"visitAll\",\n    value: function visitAll(variables, astNodes) {\n      var _this239 = this;\n\n      this.variables = variables; // create the pipes for the pure pipes immediately, so that we know their indices.\n\n      if (!this.parent) {\n        this.usedPipes.forEach(function (pipe) {\n          if (pipe.pure) {\n            _this239.purePipeNodeIndices[pipe.name] = _this239._createPipe(null, pipe);\n          }\n        });\n      }\n\n      if (!this.parent) {\n        this.component.viewQueries.forEach(function (query, queryIndex) {\n          // Note: queries start with id 1 so we can use the number in a Bloom filter!\n          var queryId = queryIndex + 1;\n          var bindingType = query.first ? 0\n          /* First */\n          : 1\n          /* All */\n          ;\n          var flags = 134217728\n          /* TypeViewQuery */\n          | calcStaticDynamicQueryFlags(query);\n\n          _this239.nodes.push(function () {\n            return {\n              sourceSpan: null,\n              nodeFlags: flags,\n              nodeDef: importExpr(Identifiers.queryDef).callFn([literal(flags), literal(queryId), new LiteralMapExpr([new LiteralMapEntry(query.propertyName, literal(bindingType), false)])])\n            };\n          });\n        });\n      }\n\n      templateVisitAll(this, astNodes);\n\n      if (this.parent && (astNodes.length === 0 || needsAdditionalRootNode(astNodes))) {\n        // if the view is an embedded view, then we need to add an additional root node in some cases\n        this.nodes.push(function () {\n          return {\n            sourceSpan: null,\n            nodeFlags: 1\n            /* TypeElement */\n            ,\n            nodeDef: importExpr(Identifiers.anchorDef).callFn([literal(0\n            /* None */\n            ), NULL_EXPR, NULL_EXPR, literal(0)])\n          };\n        });\n      }\n    }\n  }, {\n    key: \"build\",\n    value: function build() {\n      var targetStatements = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];\n      this.children.forEach(function (child) {\n        return child.build(targetStatements);\n      });\n\n      var _this$_createNodeExpr = this._createNodeExpressions(),\n          updateRendererStmts = _this$_createNodeExpr.updateRendererStmts,\n          updateDirectivesStmts = _this$_createNodeExpr.updateDirectivesStmts,\n          nodeDefExprs = _this$_createNodeExpr.nodeDefExprs;\n\n      var updateRendererFn = this._createUpdateFn(updateRendererStmts);\n\n      var updateDirectivesFn = this._createUpdateFn(updateDirectivesStmts);\n\n      var viewFlags = 0\n      /* None */\n      ;\n\n      if (!this.parent && this.component.changeDetection === ChangeDetectionStrategy.OnPush) {\n        viewFlags |= 2\n        /* OnPush */\n        ;\n      }\n\n      var viewFactory = new DeclareFunctionStmt(this.viewName, [new FnParam(LOG_VAR$1.name)], [new ReturnStatement(importExpr(Identifiers.viewDef).callFn([literal(viewFlags), literalArr(nodeDefExprs), updateDirectivesFn, updateRendererFn]))], importType(Identifiers.ViewDefinition), this.embeddedViewIndex === 0 ? [StmtModifier.Exported] : []);\n      targetStatements.push(viewFactory);\n      return targetStatements;\n    }\n  }, {\n    key: \"_createUpdateFn\",\n    value: function _createUpdateFn(updateStmts) {\n      var updateFn;\n\n      if (updateStmts.length > 0) {\n        var preStmts = [];\n\n        if (!this.component.isHost && findReadVarNames(updateStmts).has(COMP_VAR.name)) {\n          preStmts.push(COMP_VAR.set(VIEW_VAR.prop('component')).toDeclStmt(this.compType));\n        }\n\n        updateFn = fn([new FnParam(CHECK_VAR.name, INFERRED_TYPE), new FnParam(VIEW_VAR.name, INFERRED_TYPE)], [].concat(preStmts, _toConsumableArray(updateStmts)), INFERRED_TYPE);\n      } else {\n        updateFn = NULL_EXPR;\n      }\n\n      return updateFn;\n    }\n  }, {\n    key: \"visitNgContent\",\n    value: function visitNgContent(ast, context) {\n      // ngContentDef(ngContentIndex: number, index: number): NodeDef;\n      this.nodes.push(function () {\n        return {\n          sourceSpan: ast.sourceSpan,\n          nodeFlags: 8\n          /* TypeNgContent */\n          ,\n          nodeDef: importExpr(Identifiers.ngContentDef).callFn([literal(ast.ngContentIndex), literal(ast.index)])\n        };\n      });\n    }\n  }, {\n    key: \"visitText\",\n    value: function visitText(ast, context) {\n      // Static text nodes have no check function\n      var checkIndex = -1;\n      this.nodes.push(function () {\n        return {\n          sourceSpan: ast.sourceSpan,\n          nodeFlags: 2\n          /* TypeText */\n          ,\n          nodeDef: importExpr(Identifiers.textDef).callFn([literal(checkIndex), literal(ast.ngContentIndex), literalArr([literal(ast.value)])])\n        };\n      });\n    }\n  }, {\n    key: \"visitBoundText\",\n    value: function visitBoundText(ast, context) {\n      var _this240 = this;\n\n      var nodeIndex = this.nodes.length; // reserve the space in the nodeDefs array\n\n      this.nodes.push(null);\n      var astWithSource = ast.value;\n      var inter = astWithSource.ast;\n      var updateRendererExpressions = inter.expressions.map(function (expr, bindingIndex) {\n        return _this240._preprocessUpdateExpression({\n          nodeIndex: nodeIndex,\n          bindingIndex: bindingIndex,\n          sourceSpan: ast.sourceSpan,\n          context: COMP_VAR,\n          value: expr\n        });\n      }); // Check index is the same as the node index during compilation\n      // They might only differ at runtime\n\n      var checkIndex = nodeIndex;\n\n      this.nodes[nodeIndex] = function () {\n        return {\n          sourceSpan: ast.sourceSpan,\n          nodeFlags: 2\n          /* TypeText */\n          ,\n          nodeDef: importExpr(Identifiers.textDef).callFn([literal(checkIndex), literal(ast.ngContentIndex), literalArr(inter.strings.map(function (s) {\n            return literal(s);\n          }))]),\n          updateRenderer: updateRendererExpressions\n        };\n      };\n    }\n  }, {\n    key: \"visitEmbeddedTemplate\",\n    value: function visitEmbeddedTemplate(ast, context) {\n      var _this241 = this;\n\n      var nodeIndex = this.nodes.length; // reserve the space in the nodeDefs array\n\n      this.nodes.push(null);\n\n      var _this$_visitElementOr = this._visitElementOrTemplate(nodeIndex, ast),\n          flags = _this$_visitElementOr.flags,\n          queryMatchesExpr = _this$_visitElementOr.queryMatchesExpr,\n          hostEvents = _this$_visitElementOr.hostEvents;\n\n      var childVisitor = this.viewBuilderFactory(this);\n      this.children.push(childVisitor);\n      childVisitor.visitAll(ast.variables, ast.children);\n      var childCount = this.nodes.length - nodeIndex - 1; // anchorDef(\n      //   flags: NodeFlags, matchedQueries: [string, QueryValueType][], ngContentIndex: number,\n      //   childCount: number, handleEventFn?: ElementHandleEventFn, templateFactory?:\n      //   ViewDefinitionFactory): NodeDef;\n\n      this.nodes[nodeIndex] = function () {\n        return {\n          sourceSpan: ast.sourceSpan,\n          nodeFlags: 1\n          /* TypeElement */\n          | flags,\n          nodeDef: importExpr(Identifiers.anchorDef).callFn([literal(flags), queryMatchesExpr, literal(ast.ngContentIndex), literal(childCount), _this241._createElementHandleEventFn(nodeIndex, hostEvents), variable(childVisitor.viewName)])\n        };\n      };\n    }\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(ast, context) {\n      var _this242 = this;\n\n      var nodeIndex = this.nodes.length; // reserve the space in the nodeDefs array so we can add children\n\n      this.nodes.push(null); // Using a null element name creates an anchor.\n\n      var elName = isNgContainer(ast.name) ? null : ast.name;\n\n      var _this$_visitElementOr2 = this._visitElementOrTemplate(nodeIndex, ast),\n          flags = _this$_visitElementOr2.flags,\n          usedEvents = _this$_visitElementOr2.usedEvents,\n          queryMatchesExpr = _this$_visitElementOr2.queryMatchesExpr,\n          dirHostBindings = _this$_visitElementOr2.hostBindings,\n          hostEvents = _this$_visitElementOr2.hostEvents;\n\n      var inputDefs = [];\n      var updateRendererExpressions = [];\n      var outputDefs = [];\n\n      if (elName) {\n        var hostBindings = ast.inputs.map(function (inputAst) {\n          return {\n            context: COMP_VAR,\n            inputAst: inputAst,\n            dirAst: null\n          };\n        }).concat(dirHostBindings);\n\n        if (hostBindings.length) {\n          updateRendererExpressions = hostBindings.map(function (hostBinding, bindingIndex) {\n            return _this242._preprocessUpdateExpression({\n              context: hostBinding.context,\n              nodeIndex: nodeIndex,\n              bindingIndex: bindingIndex,\n              sourceSpan: hostBinding.inputAst.sourceSpan,\n              value: hostBinding.inputAst.value\n            });\n          });\n          inputDefs = hostBindings.map(function (hostBinding) {\n            return elementBindingDef(hostBinding.inputAst, hostBinding.dirAst);\n          });\n        }\n\n        outputDefs = usedEvents.map(function (_ref39) {\n          var _ref40 = _slicedToArray(_ref39, 2),\n              target = _ref40[0],\n              eventName = _ref40[1];\n\n          return literalArr([literal(target), literal(eventName)]);\n        });\n      }\n\n      templateVisitAll(this, ast.children);\n      var childCount = this.nodes.length - nodeIndex - 1;\n      var compAst = ast.directives.find(function (dirAst) {\n        return dirAst.directive.isComponent;\n      });\n      var compRendererType = NULL_EXPR;\n      var compView = NULL_EXPR;\n\n      if (compAst) {\n        compView = this.outputCtx.importExpr(compAst.directive.componentViewType);\n        compRendererType = this.outputCtx.importExpr(compAst.directive.rendererType);\n      } // Check index is the same as the node index during compilation\n      // They might only differ at runtime\n\n\n      var checkIndex = nodeIndex;\n\n      this.nodes[nodeIndex] = function () {\n        return {\n          sourceSpan: ast.sourceSpan,\n          nodeFlags: 1\n          /* TypeElement */\n          | flags,\n          nodeDef: importExpr(Identifiers.elementDef).callFn([literal(checkIndex), literal(flags), queryMatchesExpr, literal(ast.ngContentIndex), literal(childCount), literal(elName), elName ? fixedAttrsDef(ast) : NULL_EXPR, inputDefs.length ? literalArr(inputDefs) : NULL_EXPR, outputDefs.length ? literalArr(outputDefs) : NULL_EXPR, _this242._createElementHandleEventFn(nodeIndex, hostEvents), compView, compRendererType]),\n          updateRenderer: updateRendererExpressions\n        };\n      };\n    }\n  }, {\n    key: \"_visitElementOrTemplate\",\n    value: function _visitElementOrTemplate(nodeIndex, ast) {\n      var _this243 = this;\n\n      var flags = 0\n      /* None */\n      ;\n\n      if (ast.hasViewContainer) {\n        flags |= 16777216\n        /* EmbeddedViews */\n        ;\n      }\n\n      var usedEvents = new Map();\n      ast.outputs.forEach(function (event) {\n        var _elementEventNameAndT = elementEventNameAndTarget(event, null),\n            name = _elementEventNameAndT.name,\n            target = _elementEventNameAndT.target;\n\n        usedEvents.set(elementEventFullName(target, name), [target, name]);\n      });\n      ast.directives.forEach(function (dirAst) {\n        dirAst.hostEvents.forEach(function (event) {\n          var _elementEventNameAndT2 = elementEventNameAndTarget(event, dirAst),\n              name = _elementEventNameAndT2.name,\n              target = _elementEventNameAndT2.target;\n\n          usedEvents.set(elementEventFullName(target, name), [target, name]);\n        });\n      });\n      var hostBindings = [];\n      var hostEvents = [];\n\n      this._visitComponentFactoryResolverProvider(ast.directives);\n\n      ast.providers.forEach(function (providerAst) {\n        var dirAst = undefined;\n        ast.directives.forEach(function (localDirAst) {\n          if (localDirAst.directive.type.reference === tokenReference(providerAst.token)) {\n            dirAst = localDirAst;\n          }\n        });\n\n        if (dirAst) {\n          var _this243$_visitDirect = _this243._visitDirective(providerAst, dirAst, ast.references, ast.queryMatches, usedEvents),\n              dirHostBindings = _this243$_visitDirect.hostBindings,\n              dirHostEvents = _this243$_visitDirect.hostEvents;\n\n          hostBindings.push.apply(hostBindings, _toConsumableArray(dirHostBindings));\n          hostEvents.push.apply(hostEvents, _toConsumableArray(dirHostEvents));\n        } else {\n          _this243._visitProvider(providerAst, ast.queryMatches);\n        }\n      });\n      var queryMatchExprs = [];\n      ast.queryMatches.forEach(function (match) {\n        var valueType = undefined;\n\n        if (tokenReference(match.value) === _this243.reflector.resolveExternalReference(Identifiers.ElementRef)) {\n          valueType = 0\n          /* ElementRef */\n          ;\n        } else if (tokenReference(match.value) === _this243.reflector.resolveExternalReference(Identifiers.ViewContainerRef)) {\n          valueType = 3\n          /* ViewContainerRef */\n          ;\n        } else if (tokenReference(match.value) === _this243.reflector.resolveExternalReference(Identifiers.TemplateRef)) {\n          valueType = 2\n          /* TemplateRef */\n          ;\n        }\n\n        if (valueType != null) {\n          queryMatchExprs.push(literalArr([literal(match.queryId), literal(valueType)]));\n        }\n      });\n      ast.references.forEach(function (ref) {\n        var valueType = undefined;\n\n        if (!ref.value) {\n          valueType = 1\n          /* RenderElement */\n          ;\n        } else if (tokenReference(ref.value) === _this243.reflector.resolveExternalReference(Identifiers.TemplateRef)) {\n          valueType = 2\n          /* TemplateRef */\n          ;\n        }\n\n        if (valueType != null) {\n          _this243.refNodeIndices[ref.name] = nodeIndex;\n          queryMatchExprs.push(literalArr([literal(ref.name), literal(valueType)]));\n        }\n      });\n      ast.outputs.forEach(function (outputAst) {\n        hostEvents.push({\n          context: COMP_VAR,\n          eventAst: outputAst,\n          dirAst: null\n        });\n      });\n      return {\n        flags: flags,\n        usedEvents: Array.from(usedEvents.values()),\n        queryMatchesExpr: queryMatchExprs.length ? literalArr(queryMatchExprs) : NULL_EXPR,\n        hostBindings: hostBindings,\n        hostEvents: hostEvents\n      };\n    }\n  }, {\n    key: \"_visitDirective\",\n    value: function _visitDirective(providerAst, dirAst, refs, queryMatches, usedEvents) {\n      var _this244 = this;\n\n      var nodeIndex = this.nodes.length; // reserve the space in the nodeDefs array so we can add children\n\n      this.nodes.push(null);\n      dirAst.directive.queries.forEach(function (query, queryIndex) {\n        var queryId = dirAst.contentQueryStartId + queryIndex;\n        var flags = 67108864\n        /* TypeContentQuery */\n        | calcStaticDynamicQueryFlags(query);\n        var bindingType = query.first ? 0\n        /* First */\n        : 1\n        /* All */\n        ;\n\n        _this244.nodes.push(function () {\n          return {\n            sourceSpan: dirAst.sourceSpan,\n            nodeFlags: flags,\n            nodeDef: importExpr(Identifiers.queryDef).callFn([literal(flags), literal(queryId), new LiteralMapExpr([new LiteralMapEntry(query.propertyName, literal(bindingType), false)])])\n          };\n        });\n      }); // Note: the operation below might also create new nodeDefs,\n      // but we don't want them to be a child of a directive,\n      // as they might be a provider/pipe on their own.\n      // I.e. we only allow queries as children of directives nodes.\n\n      var childCount = this.nodes.length - nodeIndex - 1;\n\n      var _this$_visitProviderO = this._visitProviderOrDirective(providerAst, queryMatches),\n          flags = _this$_visitProviderO.flags,\n          queryMatchExprs = _this$_visitProviderO.queryMatchExprs,\n          providerExpr = _this$_visitProviderO.providerExpr,\n          depsExpr = _this$_visitProviderO.depsExpr;\n\n      refs.forEach(function (ref) {\n        if (ref.value && tokenReference(ref.value) === tokenReference(providerAst.token)) {\n          _this244.refNodeIndices[ref.name] = nodeIndex;\n          queryMatchExprs.push(literalArr([literal(ref.name), literal(4\n          /* Provider */\n          )]));\n        }\n      });\n\n      if (dirAst.directive.isComponent) {\n        flags |= 32768\n        /* Component */\n        ;\n      }\n\n      var inputDefs = dirAst.inputs.map(function (inputAst, inputIndex) {\n        var mapValue = literalArr([literal(inputIndex), literal(inputAst.directiveName)]); // Note: it's important to not quote the key so that we can capture renames by minifiers!\n\n        return new LiteralMapEntry(inputAst.directiveName, mapValue, false);\n      });\n      var outputDefs = [];\n      var dirMeta = dirAst.directive;\n      Object.keys(dirMeta.outputs).forEach(function (propName) {\n        var eventName = dirMeta.outputs[propName];\n\n        if (usedEvents.has(eventName)) {\n          // Note: it's important to not quote the key so that we can capture renames by minifiers!\n          outputDefs.push(new LiteralMapEntry(propName, literal(eventName), false));\n        }\n      });\n      var updateDirectiveExpressions = [];\n\n      if (dirAst.inputs.length || (flags & (262144\n      /* DoCheck */\n      | 65536\n      /* OnInit */\n      )) > 0) {\n        updateDirectiveExpressions = dirAst.inputs.map(function (input, bindingIndex) {\n          return _this244._preprocessUpdateExpression({\n            nodeIndex: nodeIndex,\n            bindingIndex: bindingIndex,\n            sourceSpan: input.sourceSpan,\n            context: COMP_VAR,\n            value: input.value\n          });\n        });\n      }\n\n      var dirContextExpr = importExpr(Identifiers.nodeValue).callFn([VIEW_VAR, literal(nodeIndex)]);\n      var hostBindings = dirAst.hostProperties.map(function (inputAst) {\n        return {\n          context: dirContextExpr,\n          dirAst: dirAst,\n          inputAst: inputAst\n        };\n      });\n      var hostEvents = dirAst.hostEvents.map(function (hostEventAst) {\n        return {\n          context: dirContextExpr,\n          eventAst: hostEventAst,\n          dirAst: dirAst\n        };\n      }); // Check index is the same as the node index during compilation\n      // They might only differ at runtime\n\n      var checkIndex = nodeIndex;\n\n      this.nodes[nodeIndex] = function () {\n        return {\n          sourceSpan: dirAst.sourceSpan,\n          nodeFlags: 16384\n          /* TypeDirective */\n          | flags,\n          nodeDef: importExpr(Identifiers.directiveDef).callFn([literal(checkIndex), literal(flags), queryMatchExprs.length ? literalArr(queryMatchExprs) : NULL_EXPR, literal(childCount), providerExpr, depsExpr, inputDefs.length ? new LiteralMapExpr(inputDefs) : NULL_EXPR, outputDefs.length ? new LiteralMapExpr(outputDefs) : NULL_EXPR]),\n          updateDirectives: updateDirectiveExpressions,\n          directive: dirAst.directive.type\n        };\n      };\n\n      return {\n        hostBindings: hostBindings,\n        hostEvents: hostEvents\n      };\n    }\n  }, {\n    key: \"_visitProvider\",\n    value: function _visitProvider(providerAst, queryMatches) {\n      this._addProviderNode(this._visitProviderOrDirective(providerAst, queryMatches));\n    }\n  }, {\n    key: \"_visitComponentFactoryResolverProvider\",\n    value: function _visitComponentFactoryResolverProvider(directives) {\n      var componentDirMeta = directives.find(function (dirAst) {\n        return dirAst.directive.isComponent;\n      });\n\n      if (componentDirMeta && componentDirMeta.directive.entryComponents.length) {\n        var _componentFactoryReso = componentFactoryResolverProviderDef(this.reflector, this.outputCtx, 8192\n        /* PrivateProvider */\n        , componentDirMeta.directive.entryComponents),\n            providerExpr = _componentFactoryReso.providerExpr,\n            depsExpr = _componentFactoryReso.depsExpr,\n            flags = _componentFactoryReso.flags,\n            _tokenExpr = _componentFactoryReso.tokenExpr;\n\n        this._addProviderNode({\n          providerExpr: providerExpr,\n          depsExpr: depsExpr,\n          flags: flags,\n          tokenExpr: _tokenExpr,\n          queryMatchExprs: [],\n          sourceSpan: componentDirMeta.sourceSpan\n        });\n      }\n    }\n  }, {\n    key: \"_addProviderNode\",\n    value: function _addProviderNode(data) {\n      // providerDef(\n      //   flags: NodeFlags, matchedQueries: [string, QueryValueType][], token:any,\n      //   value: any, deps: ([DepFlags, any] | any)[]): NodeDef;\n      this.nodes.push(function () {\n        return {\n          sourceSpan: data.sourceSpan,\n          nodeFlags: data.flags,\n          nodeDef: importExpr(Identifiers.providerDef).callFn([literal(data.flags), data.queryMatchExprs.length ? literalArr(data.queryMatchExprs) : NULL_EXPR, data.tokenExpr, data.providerExpr, data.depsExpr])\n        };\n      });\n    }\n  }, {\n    key: \"_visitProviderOrDirective\",\n    value: function _visitProviderOrDirective(providerAst, queryMatches) {\n      var flags = 0\n      /* None */\n      ;\n      var queryMatchExprs = [];\n      queryMatches.forEach(function (match) {\n        if (tokenReference(match.value) === tokenReference(providerAst.token)) {\n          queryMatchExprs.push(literalArr([literal(match.queryId), literal(4\n          /* Provider */\n          )]));\n        }\n      });\n\n      var _providerDef = providerDef(this.outputCtx, providerAst),\n          providerExpr = _providerDef.providerExpr,\n          depsExpr = _providerDef.depsExpr,\n          providerFlags = _providerDef.flags,\n          tokenExpr = _providerDef.tokenExpr;\n\n      return {\n        flags: flags | providerFlags,\n        queryMatchExprs: queryMatchExprs,\n        providerExpr: providerExpr,\n        depsExpr: depsExpr,\n        tokenExpr: tokenExpr,\n        sourceSpan: providerAst.sourceSpan\n      };\n    }\n  }, {\n    key: \"getLocal\",\n    value: function getLocal(name) {\n      if (name == EventHandlerVars.event.name) {\n        return EventHandlerVars.event;\n      }\n\n      var currViewExpr = VIEW_VAR;\n\n      for (var currBuilder = this; currBuilder; currBuilder = currBuilder.parent, currViewExpr = currViewExpr.prop('parent').cast(DYNAMIC_TYPE)) {\n        // check references\n        var refNodeIndex = currBuilder.refNodeIndices[name];\n\n        if (refNodeIndex != null) {\n          return importExpr(Identifiers.nodeValue).callFn([currViewExpr, literal(refNodeIndex)]);\n        } // check variables\n\n\n        var varAst = currBuilder.variables.find(function (varAst) {\n          return varAst.name === name;\n        });\n\n        if (varAst) {\n          var varValue = varAst.value || IMPLICIT_TEMPLATE_VAR;\n          return currViewExpr.prop('context').prop(varValue);\n        }\n      }\n\n      return null;\n    }\n  }, {\n    key: \"notifyImplicitReceiverUse\",\n    value: function notifyImplicitReceiverUse() {// Not needed in View Engine as View Engine walks through the generated\n      // expressions to figure out if the implicit receiver is used and needs\n      // to be generated as part of the pre-update statements.\n    }\n  }, {\n    key: \"_createLiteralArrayConverter\",\n    value: function _createLiteralArrayConverter(sourceSpan, argCount) {\n      if (argCount === 0) {\n        var valueExpr = importExpr(Identifiers.EMPTY_ARRAY);\n        return function () {\n          return valueExpr;\n        };\n      }\n\n      var checkIndex = this.nodes.length;\n      this.nodes.push(function () {\n        return {\n          sourceSpan: sourceSpan,\n          nodeFlags: 32\n          /* TypePureArray */\n          ,\n          nodeDef: importExpr(Identifiers.pureArrayDef).callFn([literal(checkIndex), literal(argCount)])\n        };\n      });\n      return function (args) {\n        return callCheckStmt(checkIndex, args);\n      };\n    }\n  }, {\n    key: \"_createLiteralMapConverter\",\n    value: function _createLiteralMapConverter(sourceSpan, keys) {\n      if (keys.length === 0) {\n        var valueExpr = importExpr(Identifiers.EMPTY_MAP);\n        return function () {\n          return valueExpr;\n        };\n      }\n\n      var map = literalMap(keys.map(function (e, i) {\n        return Object.assign(Object.assign({}, e), {\n          value: literal(i)\n        });\n      }));\n      var checkIndex = this.nodes.length;\n      this.nodes.push(function () {\n        return {\n          sourceSpan: sourceSpan,\n          nodeFlags: 64\n          /* TypePureObject */\n          ,\n          nodeDef: importExpr(Identifiers.pureObjectDef).callFn([literal(checkIndex), map])\n        };\n      });\n      return function (args) {\n        return callCheckStmt(checkIndex, args);\n      };\n    }\n  }, {\n    key: \"_createPipeConverter\",\n    value: function _createPipeConverter(expression, name, argCount) {\n      var pipe = this.usedPipes.find(function (pipeSummary) {\n        return pipeSummary.name === name;\n      });\n\n      if (pipe.pure) {\n        var checkIndex = this.nodes.length;\n        this.nodes.push(function () {\n          return {\n            sourceSpan: expression.sourceSpan,\n            nodeFlags: 128\n            /* TypePurePipe */\n            ,\n            nodeDef: importExpr(Identifiers.purePipeDef).callFn([literal(checkIndex), literal(argCount)])\n          };\n        }); // find underlying pipe in the component view\n\n        var compViewExpr = VIEW_VAR;\n        var compBuilder = this;\n\n        while (compBuilder.parent) {\n          compBuilder = compBuilder.parent;\n          compViewExpr = compViewExpr.prop('parent').cast(DYNAMIC_TYPE);\n        }\n\n        var pipeNodeIndex = compBuilder.purePipeNodeIndices[name];\n        var pipeValueExpr = importExpr(Identifiers.nodeValue).callFn([compViewExpr, literal(pipeNodeIndex)]);\n        return function (args) {\n          return callUnwrapValue(expression.nodeIndex, expression.bindingIndex, callCheckStmt(checkIndex, [pipeValueExpr].concat(args)));\n        };\n      } else {\n        var nodeIndex = this._createPipe(expression.sourceSpan, pipe);\n\n        var nodeValueExpr = importExpr(Identifiers.nodeValue).callFn([VIEW_VAR, literal(nodeIndex)]);\n        return function (args) {\n          return callUnwrapValue(expression.nodeIndex, expression.bindingIndex, nodeValueExpr.callMethod('transform', args));\n        };\n      }\n    }\n  }, {\n    key: \"_createPipe\",\n    value: function _createPipe(sourceSpan, pipe) {\n      var _this245 = this;\n\n      var nodeIndex = this.nodes.length;\n      var flags = 0\n      /* None */\n      ;\n      pipe.type.lifecycleHooks.forEach(function (lifecycleHook) {\n        // for pipes, we only support ngOnDestroy\n        if (lifecycleHook === LifecycleHooks.OnDestroy) {\n          flags |= lifecycleHookToNodeFlag(lifecycleHook);\n        }\n      });\n      var depExprs = pipe.type.diDeps.map(function (diDep) {\n        return depDef(_this245.outputCtx, diDep);\n      }); // function pipeDef(\n      //   flags: NodeFlags, ctor: any, deps: ([DepFlags, any] | any)[]): NodeDef\n\n      this.nodes.push(function () {\n        return {\n          sourceSpan: sourceSpan,\n          nodeFlags: 16\n          /* TypePipe */\n          ,\n          nodeDef: importExpr(Identifiers.pipeDef).callFn([literal(flags), _this245.outputCtx.importExpr(pipe.type.reference), literalArr(depExprs)])\n        };\n      });\n      return nodeIndex;\n    }\n    /**\n     * For the AST in `UpdateExpression.value`:\n     * - create nodes for pipes, literal arrays and, literal maps,\n     * - update the AST to replace pipes, literal arrays and, literal maps with calls to check fn.\n     *\n     * WARNING: This might create new nodeDefs (for pipes and literal arrays and literal maps)!\n     */\n\n  }, {\n    key: \"_preprocessUpdateExpression\",\n    value: function _preprocessUpdateExpression(expression) {\n      var _this246 = this;\n\n      return {\n        nodeIndex: expression.nodeIndex,\n        bindingIndex: expression.bindingIndex,\n        sourceSpan: expression.sourceSpan,\n        context: expression.context,\n        value: convertPropertyBindingBuiltins({\n          createLiteralArrayConverter: function createLiteralArrayConverter(argCount) {\n            return _this246._createLiteralArrayConverter(expression.sourceSpan, argCount);\n          },\n          createLiteralMapConverter: function createLiteralMapConverter(keys) {\n            return _this246._createLiteralMapConverter(expression.sourceSpan, keys);\n          },\n          createPipeConverter: function createPipeConverter(name, argCount) {\n            return _this246._createPipeConverter(expression, name, argCount);\n          }\n        }, expression.value)\n      };\n    }\n  }, {\n    key: \"_createNodeExpressions\",\n    value: function _createNodeExpressions() {\n      var self = this;\n      var updateBindingCount = 0;\n      var updateRendererStmts = [];\n      var updateDirectivesStmts = [];\n      var nodeDefExprs = this.nodes.map(function (factory, nodeIndex) {\n        var _factory = factory(),\n            nodeDef = _factory.nodeDef,\n            nodeFlags = _factory.nodeFlags,\n            updateDirectives = _factory.updateDirectives,\n            updateRenderer = _factory.updateRenderer,\n            sourceSpan = _factory.sourceSpan;\n\n        if (updateRenderer) {\n          updateRendererStmts.push.apply(updateRendererStmts, _toConsumableArray(createUpdateStatements(nodeIndex, sourceSpan, updateRenderer, false)));\n        }\n\n        if (updateDirectives) {\n          updateDirectivesStmts.push.apply(updateDirectivesStmts, _toConsumableArray(createUpdateStatements(nodeIndex, sourceSpan, updateDirectives, (nodeFlags & (262144\n          /* DoCheck */\n          | 65536\n          /* OnInit */\n          )) > 0)));\n        } // We use a comma expression to call the log function before\n        // the nodeDef function, but still use the result of the nodeDef function\n        // as the value.\n        // Note: We only add the logger to elements / text nodes,\n        // so we don't generate too much code.\n\n\n        var logWithNodeDef = nodeFlags & 3\n        /* CatRenderNode */\n        ? new CommaExpr([LOG_VAR$1.callFn([]).callFn([]), nodeDef]) : nodeDef;\n        return applySourceSpanToExpressionIfNeeded(logWithNodeDef, sourceSpan);\n      });\n      return {\n        updateRendererStmts: updateRendererStmts,\n        updateDirectivesStmts: updateDirectivesStmts,\n        nodeDefExprs: nodeDefExprs\n      };\n\n      function createUpdateStatements(nodeIndex, sourceSpan, expressions, allowEmptyExprs) {\n        var updateStmts = [];\n        var exprs = expressions.map(function (_ref41) {\n          var sourceSpan = _ref41.sourceSpan,\n              context = _ref41.context,\n              value = _ref41.value;\n          var bindingId = \"\".concat(updateBindingCount++);\n          var nameResolver = context === COMP_VAR ? self : null;\n\n          var _convertPropertyBindi3 = _convertPropertyBinding(nameResolver, context, value, bindingId, BindingForm.General),\n              stmts = _convertPropertyBindi3.stmts,\n              currValExpr = _convertPropertyBindi3.currValExpr;\n\n          updateStmts.push.apply(updateStmts, _toConsumableArray(stmts.map(function (stmt) {\n            return applySourceSpanToStatementIfNeeded(stmt, sourceSpan);\n          })));\n          return applySourceSpanToExpressionIfNeeded(currValExpr, sourceSpan);\n        });\n\n        if (expressions.length || allowEmptyExprs) {\n          updateStmts.push(applySourceSpanToStatementIfNeeded(callCheckStmt(nodeIndex, exprs).toStmt(), sourceSpan));\n        }\n\n        return updateStmts;\n      }\n    }\n  }, {\n    key: \"_createElementHandleEventFn\",\n    value: function _createElementHandleEventFn(nodeIndex, handlers) {\n      var _this247 = this;\n\n      var handleEventStmts = [];\n      var handleEventBindingCount = 0;\n      handlers.forEach(function (_ref42) {\n        var context = _ref42.context,\n            eventAst = _ref42.eventAst,\n            dirAst = _ref42.dirAst;\n        var bindingId = \"\".concat(handleEventBindingCount++);\n        var nameResolver = context === COMP_VAR ? _this247 : null;\n\n        var _convertActionBinding2 = convertActionBinding(nameResolver, context, eventAst.handler, bindingId),\n            stmts = _convertActionBinding2.stmts,\n            allowDefault = _convertActionBinding2.allowDefault;\n\n        var trueStmts = stmts;\n\n        if (allowDefault) {\n          trueStmts.push(ALLOW_DEFAULT_VAR.set(allowDefault.and(ALLOW_DEFAULT_VAR)).toStmt());\n        }\n\n        var _elementEventNameAndT3 = elementEventNameAndTarget(eventAst, dirAst),\n            eventTarget = _elementEventNameAndT3.target,\n            eventName = _elementEventNameAndT3.name;\n\n        var fullEventName = elementEventFullName(eventTarget, eventName);\n        handleEventStmts.push(applySourceSpanToStatementIfNeeded(new IfStmt(literal(fullEventName).identical(EVENT_NAME_VAR), trueStmts), eventAst.sourceSpan));\n      });\n      var handleEventFn;\n\n      if (handleEventStmts.length > 0) {\n        var preStmts = [ALLOW_DEFAULT_VAR.set(literal(true)).toDeclStmt(BOOL_TYPE)];\n\n        if (!this.component.isHost && findReadVarNames(handleEventStmts).has(COMP_VAR.name)) {\n          preStmts.push(COMP_VAR.set(VIEW_VAR.prop('component')).toDeclStmt(this.compType));\n        }\n\n        handleEventFn = fn([new FnParam(VIEW_VAR.name, INFERRED_TYPE), new FnParam(EVENT_NAME_VAR.name, INFERRED_TYPE), new FnParam(EventHandlerVars.event.name, INFERRED_TYPE)], [].concat(preStmts, handleEventStmts, [new ReturnStatement(ALLOW_DEFAULT_VAR)]), INFERRED_TYPE);\n      } else {\n        handleEventFn = NULL_EXPR;\n      }\n\n      return handleEventFn;\n    }\n  }, {\n    key: \"visitDirective\",\n    value: function visitDirective(ast, context) {}\n  }, {\n    key: \"visitDirectiveProperty\",\n    value: function visitDirectiveProperty(ast, context) {}\n  }, {\n    key: \"visitReference\",\n    value: function visitReference(ast, context) {}\n  }, {\n    key: \"visitVariable\",\n    value: function visitVariable(ast, context) {}\n  }, {\n    key: \"visitEvent\",\n    value: function visitEvent(ast, context) {}\n  }, {\n    key: \"visitElementProperty\",\n    value: function visitElementProperty(ast, context) {}\n  }, {\n    key: \"visitAttr\",\n    value: function visitAttr(ast, context) {}\n  }]);\n\n  return ViewBuilder$1;\n}();\n\nfunction needsAdditionalRootNode(astNodes) {\n  var lastAstNode = astNodes[astNodes.length - 1];\n\n  if (lastAstNode instanceof EmbeddedTemplateAst) {\n    return lastAstNode.hasViewContainer;\n  }\n\n  if (lastAstNode instanceof ElementAst) {\n    if (isNgContainer(lastAstNode.name) && lastAstNode.children.length) {\n      return needsAdditionalRootNode(lastAstNode.children);\n    }\n\n    return lastAstNode.hasViewContainer;\n  }\n\n  return lastAstNode instanceof NgContentAst;\n}\n\nfunction elementBindingDef(inputAst, dirAst) {\n  var inputType = inputAst.type;\n\n  switch (inputType) {\n    case 1\n    /* Attribute */\n    :\n      return literalArr([literal(1\n      /* TypeElementAttribute */\n      ), literal(inputAst.name), literal(inputAst.securityContext)]);\n\n    case 0\n    /* Property */\n    :\n      return literalArr([literal(8\n      /* TypeProperty */\n      ), literal(inputAst.name), literal(inputAst.securityContext)]);\n\n    case 4\n    /* Animation */\n    :\n      var bindingType = 8\n      /* TypeProperty */\n      | (dirAst && dirAst.directive.isComponent ? 32\n      /* SyntheticHostProperty */\n      : 16\n      /* SyntheticProperty */\n      );\n      return literalArr([literal(bindingType), literal('@' + inputAst.name), literal(inputAst.securityContext)]);\n\n    case 2\n    /* Class */\n    :\n      return literalArr([literal(2\n      /* TypeElementClass */\n      ), literal(inputAst.name), NULL_EXPR]);\n\n    case 3\n    /* Style */\n    :\n      return literalArr([literal(4\n      /* TypeElementStyle */\n      ), literal(inputAst.name), literal(inputAst.unit)]);\n\n    default:\n      // This default case is not needed by TypeScript compiler, as the switch is exhaustive.\n      // However Closure Compiler does not understand that and reports an error in typed mode.\n      // The `throw new Error` below works around the problem, and the unexpected: never variable\n      // makes sure tsc still checks this code is unreachable.\n      var unexpected = inputType;\n      throw new Error(\"unexpected \".concat(unexpected));\n  }\n}\n\nfunction fixedAttrsDef(elementAst) {\n  var mapResult = Object.create(null);\n  elementAst.attrs.forEach(function (attrAst) {\n    mapResult[attrAst.name] = attrAst.value;\n  });\n  elementAst.directives.forEach(function (dirAst) {\n    Object.keys(dirAst.directive.hostAttributes).forEach(function (name) {\n      var value = dirAst.directive.hostAttributes[name];\n      var prevValue = mapResult[name];\n      mapResult[name] = prevValue != null ? mergeAttributeValue(name, prevValue, value) : value;\n    });\n  }); // Note: We need to sort to get a defined output order\n  // for tests and for caching generated artifacts...\n\n  return literalArr(Object.keys(mapResult).sort().map(function (attrName) {\n    return literalArr([literal(attrName), literal(mapResult[attrName])]);\n  }));\n}\n\nfunction mergeAttributeValue(attrName, attrValue1, attrValue2) {\n  if (attrName == CLASS_ATTR$1 || attrName == STYLE_ATTR) {\n    return \"\".concat(attrValue1, \" \").concat(attrValue2);\n  } else {\n    return attrValue2;\n  }\n}\n\nfunction callCheckStmt(nodeIndex, exprs) {\n  if (exprs.length > 10) {\n    return CHECK_VAR.callFn([VIEW_VAR, literal(nodeIndex), literal(1\n    /* Dynamic */\n    ), literalArr(exprs)]);\n  } else {\n    return CHECK_VAR.callFn([VIEW_VAR, literal(nodeIndex), literal(0\n    /* Inline */\n    )].concat(_toConsumableArray(exprs)));\n  }\n}\n\nfunction callUnwrapValue(nodeIndex, bindingIdx, expr) {\n  return importExpr(Identifiers.unwrapValue).callFn([VIEW_VAR, literal(nodeIndex), literal(bindingIdx), expr]);\n}\n\nfunction elementEventNameAndTarget(eventAst, dirAst) {\n  if (eventAst.isAnimation) {\n    return {\n      name: \"@\".concat(eventAst.name, \".\").concat(eventAst.phase),\n      target: dirAst && dirAst.directive.isComponent ? 'component' : null\n    };\n  } else {\n    return eventAst;\n  }\n}\n\nfunction calcStaticDynamicQueryFlags(query) {\n  var flags = 0\n  /* None */\n  ; // Note: We only make queries static that query for a single item and the user specifically\n  // set the to be static. This is because of backwards compatibility with the old view compiler...\n\n  if (query.first && query.static) {\n    flags |= 268435456\n    /* StaticQuery */\n    ;\n  } else {\n    flags |= 536870912\n    /* DynamicQuery */\n    ;\n  }\n\n  return flags;\n}\n\nfunction elementEventFullName(target, name) {\n  return target ? \"\".concat(target, \":\").concat(name) : name;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A container for message extracted from the templates.\n */\n\n\nvar MessageBundle = /*#__PURE__*/function () {\n  function MessageBundle(_htmlParser, _implicitTags, _implicitAttrs) {\n    var _locale = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;\n\n    _classCallCheck(this, MessageBundle);\n\n    this._htmlParser = _htmlParser;\n    this._implicitTags = _implicitTags;\n    this._implicitAttrs = _implicitAttrs;\n    this._locale = _locale;\n    this._messages = [];\n  }\n\n  _createClass(MessageBundle, [{\n    key: \"updateFromTemplate\",\n    value: function updateFromTemplate(html, url, interpolationConfig) {\n      var _this$_messages;\n\n      var htmlParserResult = this._htmlParser.parse(html, url, {\n        tokenizeExpansionForms: true,\n        interpolationConfig: interpolationConfig\n      });\n\n      if (htmlParserResult.errors.length) {\n        return htmlParserResult.errors;\n      }\n\n      var i18nParserResult = extractMessages(htmlParserResult.rootNodes, interpolationConfig, this._implicitTags, this._implicitAttrs);\n\n      if (i18nParserResult.errors.length) {\n        return i18nParserResult.errors;\n      }\n\n      (_this$_messages = this._messages).push.apply(_this$_messages, _toConsumableArray(i18nParserResult.messages));\n\n      return [];\n    } // Return the message in the internal format\n    // The public (serialized) format might be different, see the `write` method.\n\n  }, {\n    key: \"getMessages\",\n    value: function getMessages() {\n      return this._messages;\n    }\n  }, {\n    key: \"write\",\n    value: function write(serializer, filterSources) {\n      var messages = {};\n      var mapperVisitor = new MapPlaceholderNames(); // Deduplicate messages based on their ID\n\n      this._messages.forEach(function (message) {\n        var id = serializer.digest(message);\n\n        if (!messages.hasOwnProperty(id)) {\n          messages[id] = message;\n        } else {\n          var _messages$id$sources;\n\n          (_messages$id$sources = messages[id].sources).push.apply(_messages$id$sources, _toConsumableArray(message.sources));\n        }\n      }); // Transform placeholder names using the serializer mapping\n\n\n      var msgList = Object.keys(messages).map(function (id) {\n        var mapper = serializer.createNameMapper(messages[id]);\n        var src = messages[id];\n        var nodes = mapper ? mapperVisitor.convert(src.nodes, mapper) : src.nodes;\n        var transformedMessage = new Message(nodes, {}, {}, src.meaning, src.description, id);\n        transformedMessage.sources = src.sources;\n\n        if (filterSources) {\n          transformedMessage.sources.forEach(function (source) {\n            return source.filePath = filterSources(source.filePath);\n          });\n        }\n\n        return transformedMessage;\n      });\n      return serializer.write(msgList, this._locale);\n    }\n  }]);\n\n  return MessageBundle;\n}(); // Transform an i18n AST by renaming the placeholder nodes with the given mapper\n\n\nvar MapPlaceholderNames = /*#__PURE__*/function (_CloneVisitor) {\n  _inherits(MapPlaceholderNames, _CloneVisitor);\n\n  var _super105 = _createSuper(MapPlaceholderNames);\n\n  function MapPlaceholderNames() {\n    _classCallCheck(this, MapPlaceholderNames);\n\n    return _super105.apply(this, arguments);\n  }\n\n  _createClass(MapPlaceholderNames, [{\n    key: \"convert\",\n    value: function convert(nodes, mapper) {\n      var _this248 = this;\n\n      return mapper ? nodes.map(function (n) {\n        return n.visit(_this248, mapper);\n      }) : nodes;\n    }\n  }, {\n    key: \"visitTagPlaceholder\",\n    value: function visitTagPlaceholder(ph, mapper) {\n      var _this249 = this;\n\n      var startName = mapper.toPublicName(ph.startName);\n      var closeName = ph.closeName ? mapper.toPublicName(ph.closeName) : ph.closeName;\n      var children = ph.children.map(function (n) {\n        return n.visit(_this249, mapper);\n      });\n      return new TagPlaceholder(ph.tag, ph.attrs, startName, closeName, children, ph.isVoid, ph.sourceSpan, ph.startSourceSpan, ph.endSourceSpan);\n    }\n  }, {\n    key: \"visitPlaceholder\",\n    value: function visitPlaceholder(ph, mapper) {\n      return new Placeholder(ph.value, mapper.toPublicName(ph.name), ph.sourceSpan);\n    }\n  }, {\n    key: \"visitIcuPlaceholder\",\n    value: function visitIcuPlaceholder(ph, mapper) {\n      return new IcuPlaceholder(ph.value, mapper.toPublicName(ph.name), ph.sourceSpan);\n    }\n  }]);\n\n  return MapPlaceholderNames;\n}(CloneVisitor);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar GeneratedFile = /*#__PURE__*/function () {\n  function GeneratedFile(srcFileUrl, genFileUrl, sourceOrStmts) {\n    _classCallCheck(this, GeneratedFile);\n\n    this.srcFileUrl = srcFileUrl;\n    this.genFileUrl = genFileUrl;\n\n    if (typeof sourceOrStmts === 'string') {\n      this.source = sourceOrStmts;\n      this.stmts = null;\n    } else {\n      this.source = null;\n      this.stmts = sourceOrStmts;\n    }\n  }\n\n  _createClass(GeneratedFile, [{\n    key: \"isEquivalent\",\n    value: function isEquivalent(other) {\n      if (this.genFileUrl !== other.genFileUrl) {\n        return false;\n      }\n\n      if (this.source) {\n        return this.source === other.source;\n      }\n\n      if (other.stmts == null) {\n        return false;\n      } // Note: the constructor guarantees that if this.source is not filled,\n      // then this.stmts is.\n\n\n      return areAllEquivalent(this.stmts, other.stmts);\n    }\n  }]);\n\n  return GeneratedFile;\n}();\n\nfunction toTypeScript(file) {\n  var preamble = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';\n\n  if (!file.stmts) {\n    throw new Error(\"Illegal state: No stmts present on GeneratedFile \".concat(file.genFileUrl));\n  }\n\n  return new TypeScriptEmitter().emitStatements(file.genFileUrl, file.stmts, preamble);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction _listLazyRoutes(moduleMeta, reflector) {\n  var allLazyRoutes = [];\n\n  var _iterator24 = _createForOfIteratorHelper(moduleMeta.transitiveModule.providers),\n      _step24;\n\n  try {\n    for (_iterator24.s(); !(_step24 = _iterator24.n()).done;) {\n      var _ref44 = _step24.value;\n      var provider = _ref44.provider;\n      var module = _ref44.module;\n\n      if (tokenReference(provider.token) === reflector.ROUTES) {\n        var loadChildren = _collectLoadChildren(provider.useValue);\n\n        var _iterator25 = _createForOfIteratorHelper(loadChildren),\n            _step25;\n\n        try {\n          for (_iterator25.s(); !(_step25 = _iterator25.n()).done;) {\n            var route = _step25.value;\n            allLazyRoutes.push(parseLazyRoute(route, reflector, module.reference));\n          }\n        } catch (err) {\n          _iterator25.e(err);\n        } finally {\n          _iterator25.f();\n        }\n      }\n    }\n  } catch (err) {\n    _iterator24.e(err);\n  } finally {\n    _iterator24.f();\n  }\n\n  return allLazyRoutes;\n}\n\nfunction _collectLoadChildren(routes) {\n  var target = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];\n\n  if (typeof routes === 'string') {\n    target.push(routes);\n  } else if (Array.isArray(routes)) {\n    var _iterator26 = _createForOfIteratorHelper(routes),\n        _step26;\n\n    try {\n      for (_iterator26.s(); !(_step26 = _iterator26.n()).done;) {\n        var route = _step26.value;\n\n        _collectLoadChildren(route, target);\n      }\n    } catch (err) {\n      _iterator26.e(err);\n    } finally {\n      _iterator26.f();\n    }\n  } else if (routes.loadChildren) {\n    _collectLoadChildren(routes.loadChildren, target);\n  } else if (routes.children) {\n    _collectLoadChildren(routes.children, target);\n  }\n\n  return target;\n}\n\nfunction parseLazyRoute(route, reflector, module) {\n  var _route$split = route.split('#'),\n      _route$split2 = _slicedToArray(_route$split, 2),\n      routePath = _route$split2[0],\n      routeName = _route$split2[1];\n\n  var referencedModule = reflector.resolveExternalReference({\n    moduleName: routePath,\n    name: routeName\n  }, module ? module.filePath : undefined);\n  return {\n    route: route,\n    module: module || referencedModule,\n    referencedModule: referencedModule\n  };\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar TS = /^(?!.*\\.d\\.ts$).*\\.ts$/;\n\nvar ResolvedStaticSymbol = /*#__PURE__*/_createClass(function ResolvedStaticSymbol(symbol, metadata) {\n  _classCallCheck(this, ResolvedStaticSymbol);\n\n  this.symbol = symbol;\n  this.metadata = metadata;\n});\n\nvar SUPPORTED_SCHEMA_VERSION = 4;\n/**\n * This class is responsible for loading metadata per symbol,\n * and normalizing references between symbols.\n *\n * Internally, it only uses symbols without members,\n * and deduces the values for symbols with members based\n * on these symbols.\n */\n\nvar StaticSymbolResolver = /*#__PURE__*/function () {\n  function StaticSymbolResolver(host, staticSymbolCache, summaryResolver, errorRecorder) {\n    _classCallCheck(this, StaticSymbolResolver);\n\n    this.host = host;\n    this.staticSymbolCache = staticSymbolCache;\n    this.summaryResolver = summaryResolver;\n    this.errorRecorder = errorRecorder;\n    this.metadataCache = new Map(); // Note: this will only contain StaticSymbols without members!\n\n    this.resolvedSymbols = new Map(); // Note: this will only contain StaticSymbols without members!\n\n    this.importAs = new Map();\n    this.symbolResourcePaths = new Map();\n    this.symbolFromFile = new Map();\n    this.knownFileNameToModuleNames = new Map();\n  }\n\n  _createClass(StaticSymbolResolver, [{\n    key: \"resolveSymbol\",\n    value: function resolveSymbol(staticSymbol) {\n      if (staticSymbol.members.length > 0) {\n        return this._resolveSymbolMembers(staticSymbol);\n      } // Note: always ask for a summary first,\n      // as we might have read shallow metadata via a .d.ts file\n      // for the symbol.\n\n\n      var resultFromSummary = this._resolveSymbolFromSummary(staticSymbol);\n\n      if (resultFromSummary) {\n        return resultFromSummary;\n      }\n\n      var resultFromCache = this.resolvedSymbols.get(staticSymbol);\n\n      if (resultFromCache) {\n        return resultFromCache;\n      } // Note: Some users use libraries that were not compiled with ngc, i.e. they don't\n      // have summaries, only .d.ts files. So we always need to check both, the summary\n      // and metadata.\n\n\n      this._createSymbolsOf(staticSymbol.filePath);\n\n      return this.resolvedSymbols.get(staticSymbol);\n    }\n    /**\n     * getImportAs produces a symbol that can be used to import the given symbol.\n     * The import might be different than the symbol if the symbol is exported from\n     * a library with a summary; in which case we want to import the symbol from the\n     * ngfactory re-export instead of directly to avoid introducing a direct dependency\n     * on an otherwise indirect dependency.\n     *\n     * @param staticSymbol the symbol for which to generate a import symbol\n     */\n\n  }, {\n    key: \"getImportAs\",\n    value: function getImportAs(staticSymbol) {\n      var useSummaries = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;\n\n      if (staticSymbol.members.length) {\n        var baseSymbol = this.getStaticSymbol(staticSymbol.filePath, staticSymbol.name);\n        var baseImportAs = this.getImportAs(baseSymbol, useSummaries);\n        return baseImportAs ? this.getStaticSymbol(baseImportAs.filePath, baseImportAs.name, staticSymbol.members) : null;\n      }\n\n      var summarizedFileName = stripSummaryForJitFileSuffix(staticSymbol.filePath);\n\n      if (summarizedFileName !== staticSymbol.filePath) {\n        var summarizedName = stripSummaryForJitNameSuffix(staticSymbol.name);\n\n        var _baseSymbol = this.getStaticSymbol(summarizedFileName, summarizedName, staticSymbol.members);\n\n        var _baseImportAs = this.getImportAs(_baseSymbol, useSummaries);\n\n        return _baseImportAs ? this.getStaticSymbol(summaryForJitFileName(_baseImportAs.filePath), summaryForJitName(_baseImportAs.name), _baseSymbol.members) : null;\n      }\n\n      var result = useSummaries && this.summaryResolver.getImportAs(staticSymbol) || null;\n\n      if (!result) {\n        result = this.importAs.get(staticSymbol);\n      }\n\n      return result;\n    }\n    /**\n     * getResourcePath produces the path to the original location of the symbol and should\n     * be used to determine the relative location of resource references recorded in\n     * symbol metadata.\n     */\n\n  }, {\n    key: \"getResourcePath\",\n    value: function getResourcePath(staticSymbol) {\n      return this.symbolResourcePaths.get(staticSymbol) || staticSymbol.filePath;\n    }\n    /**\n     * getTypeArity returns the number of generic type parameters the given symbol\n     * has. If the symbol is not a type the result is null.\n     */\n\n  }, {\n    key: \"getTypeArity\",\n    value: function getTypeArity(staticSymbol) {\n      // If the file is a factory/ngsummary file, don't resolve the symbol as doing so would\n      // cause the metadata for an factory/ngsummary file to be loaded which doesn't exist.\n      // All references to generated classes must include the correct arity whenever\n      // generating code.\n      if (isGeneratedFile(staticSymbol.filePath)) {\n        return null;\n      }\n\n      var resolvedSymbol = unwrapResolvedMetadata(this.resolveSymbol(staticSymbol));\n\n      while (resolvedSymbol && resolvedSymbol.metadata instanceof StaticSymbol) {\n        resolvedSymbol = unwrapResolvedMetadata(this.resolveSymbol(resolvedSymbol.metadata));\n      }\n\n      return resolvedSymbol && resolvedSymbol.metadata && resolvedSymbol.metadata.arity || null;\n    }\n  }, {\n    key: \"getKnownModuleName\",\n    value: function getKnownModuleName(filePath) {\n      return this.knownFileNameToModuleNames.get(filePath) || null;\n    }\n  }, {\n    key: \"recordImportAs\",\n    value: function recordImportAs(sourceSymbol, targetSymbol) {\n      sourceSymbol.assertNoMembers();\n      targetSymbol.assertNoMembers();\n      this.importAs.set(sourceSymbol, targetSymbol);\n    }\n  }, {\n    key: \"recordModuleNameForFileName\",\n    value: function recordModuleNameForFileName(fileName, moduleName) {\n      this.knownFileNameToModuleNames.set(fileName, moduleName);\n    }\n    /**\n     * Invalidate all information derived from the given file and return the\n     * static symbols contained in the file.\n     *\n     * @param fileName the file to invalidate\n     */\n\n  }, {\n    key: \"invalidateFile\",\n    value: function invalidateFile(fileName) {\n      this.metadataCache.delete(fileName);\n      var symbols = this.symbolFromFile.get(fileName);\n\n      if (!symbols) {\n        return [];\n      }\n\n      this.symbolFromFile.delete(fileName);\n\n      var _iterator27 = _createForOfIteratorHelper(symbols),\n          _step27;\n\n      try {\n        for (_iterator27.s(); !(_step27 = _iterator27.n()).done;) {\n          var symbol = _step27.value;\n          this.resolvedSymbols.delete(symbol);\n          this.importAs.delete(symbol);\n          this.symbolResourcePaths.delete(symbol);\n        }\n      } catch (err) {\n        _iterator27.e(err);\n      } finally {\n        _iterator27.f();\n      }\n\n      return symbols;\n    }\n    /** @internal */\n\n  }, {\n    key: \"ignoreErrorsFor\",\n    value: function ignoreErrorsFor(cb) {\n      var recorder = this.errorRecorder;\n\n      this.errorRecorder = function () {};\n\n      try {\n        return cb();\n      } finally {\n        this.errorRecorder = recorder;\n      }\n    }\n  }, {\n    key: \"_resolveSymbolMembers\",\n    value: function _resolveSymbolMembers(staticSymbol) {\n      var members = staticSymbol.members;\n      var baseResolvedSymbol = this.resolveSymbol(this.getStaticSymbol(staticSymbol.filePath, staticSymbol.name));\n\n      if (!baseResolvedSymbol) {\n        return null;\n      }\n\n      var baseMetadata = unwrapResolvedMetadata(baseResolvedSymbol.metadata);\n\n      if (baseMetadata instanceof StaticSymbol) {\n        return new ResolvedStaticSymbol(staticSymbol, this.getStaticSymbol(baseMetadata.filePath, baseMetadata.name, members));\n      } else if (baseMetadata && baseMetadata.__symbolic === 'class') {\n        if (baseMetadata.statics && members.length === 1) {\n          return new ResolvedStaticSymbol(staticSymbol, baseMetadata.statics[members[0]]);\n        }\n      } else {\n        var value = baseMetadata;\n\n        for (var i = 0; i < members.length && value; i++) {\n          value = value[members[i]];\n        }\n\n        return new ResolvedStaticSymbol(staticSymbol, value);\n      }\n\n      return null;\n    }\n  }, {\n    key: \"_resolveSymbolFromSummary\",\n    value: function _resolveSymbolFromSummary(staticSymbol) {\n      var summary = this.summaryResolver.resolveSummary(staticSymbol);\n      return summary ? new ResolvedStaticSymbol(staticSymbol, summary.metadata) : null;\n    }\n    /**\n     * getStaticSymbol produces a Type whose metadata is known but whose implementation is not loaded.\n     * All types passed to the StaticResolver should be pseudo-types returned by this method.\n     *\n     * @param declarationFile the absolute path of the file where the symbol is declared\n     * @param name the name of the type.\n     * @param members a symbol for a static member of the named type\n     */\n\n  }, {\n    key: \"getStaticSymbol\",\n    value: function getStaticSymbol(declarationFile, name, members) {\n      return this.staticSymbolCache.get(declarationFile, name, members);\n    }\n    /**\n     * hasDecorators checks a file's metadata for the presence of decorators without evaluating the\n     * metadata.\n     *\n     * @param filePath the absolute path to examine for decorators.\n     * @returns true if any class in the file has a decorator.\n     */\n\n  }, {\n    key: \"hasDecorators\",\n    value: function hasDecorators(filePath) {\n      var metadata = this.getModuleMetadata(filePath);\n\n      if (metadata['metadata']) {\n        return Object.keys(metadata['metadata']).some(function (metadataKey) {\n          var entry = metadata['metadata'][metadataKey];\n          return entry && entry.__symbolic === 'class' && entry.decorators;\n        });\n      }\n\n      return false;\n    }\n  }, {\n    key: \"getSymbolsOf\",\n    value: function getSymbolsOf(filePath) {\n      var summarySymbols = this.summaryResolver.getSymbolsOf(filePath);\n\n      if (summarySymbols) {\n        return summarySymbols;\n      } // Note: Some users use libraries that were not compiled with ngc, i.e. they don't\n      // have summaries, only .d.ts files, but `summaryResolver.isLibraryFile` returns true.\n\n\n      this._createSymbolsOf(filePath);\n\n      return this.symbolFromFile.get(filePath) || [];\n    }\n  }, {\n    key: \"_createSymbolsOf\",\n    value: function _createSymbolsOf(filePath) {\n      var _this250 = this;\n\n      if (this.symbolFromFile.has(filePath)) {\n        return;\n      }\n\n      var resolvedSymbols = [];\n      var metadata = this.getModuleMetadata(filePath);\n\n      if (metadata['importAs']) {\n        // Index bundle indices should use the importAs module name defined\n        // in the bundle.\n        this.knownFileNameToModuleNames.set(filePath, metadata['importAs']);\n      } // handle the symbols in one of the re-export location\n\n\n      if (metadata['exports']) {\n        var _iterator28 = _createForOfIteratorHelper(metadata['exports']),\n            _step28;\n\n        try {\n          var _loop3 = function _loop3() {\n            var moduleExport = _step28.value;\n\n            // handle the symbols in the list of explicitly re-exported symbols.\n            if (moduleExport.export) {\n              moduleExport.export.forEach(function (exportSymbol) {\n                var symbolName;\n\n                if (typeof exportSymbol === 'string') {\n                  symbolName = exportSymbol;\n                } else {\n                  symbolName = exportSymbol.as;\n                }\n\n                symbolName = unescapeIdentifier(symbolName);\n                var symName = symbolName;\n\n                if (typeof exportSymbol !== 'string') {\n                  symName = unescapeIdentifier(exportSymbol.name);\n                }\n\n                var resolvedModule = _this250.resolveModule(moduleExport.from, filePath);\n\n                if (resolvedModule) {\n                  var targetSymbol = _this250.getStaticSymbol(resolvedModule, symName);\n\n                  var sourceSymbol = _this250.getStaticSymbol(filePath, symbolName);\n\n                  resolvedSymbols.push(_this250.createExport(sourceSymbol, targetSymbol));\n                }\n              });\n            } else {\n              // Handle the symbols loaded by 'export *' directives.\n              var resolvedModule = _this250.resolveModule(moduleExport.from, filePath);\n\n              if (resolvedModule && resolvedModule !== filePath) {\n                var nestedExports = _this250.getSymbolsOf(resolvedModule);\n\n                nestedExports.forEach(function (targetSymbol) {\n                  var sourceSymbol = _this250.getStaticSymbol(filePath, targetSymbol.name);\n\n                  resolvedSymbols.push(_this250.createExport(sourceSymbol, targetSymbol));\n                });\n              }\n            }\n          };\n\n          for (_iterator28.s(); !(_step28 = _iterator28.n()).done;) {\n            _loop3();\n          }\n        } catch (err) {\n          _iterator28.e(err);\n        } finally {\n          _iterator28.f();\n        }\n      } // handle the actual metadata. Has to be after the exports\n      // as there might be collisions in the names, and we want the symbols\n      // of the current module to win ofter reexports.\n\n\n      if (metadata['metadata']) {\n        // handle direct declarations of the symbol\n        var topLevelSymbolNames = new Set(Object.keys(metadata['metadata']).map(unescapeIdentifier));\n        var origins = metadata['origins'] || {};\n        Object.keys(metadata['metadata']).forEach(function (metadataKey) {\n          var symbolMeta = metadata['metadata'][metadataKey];\n          var name = unescapeIdentifier(metadataKey);\n\n          var symbol = _this250.getStaticSymbol(filePath, name);\n\n          var origin = origins.hasOwnProperty(metadataKey) && origins[metadataKey];\n\n          if (origin) {\n            // If the symbol is from a bundled index, use the declaration location of the\n            // symbol so relative references (such as './my.html') will be calculated\n            // correctly.\n            var originFilePath = _this250.resolveModule(origin, filePath);\n\n            if (!originFilePath) {\n              _this250.reportError(new Error(\"Couldn't resolve original symbol for \".concat(origin, \" from \").concat(_this250.host.getOutputName(filePath))));\n            } else {\n              _this250.symbolResourcePaths.set(symbol, originFilePath);\n            }\n          }\n\n          resolvedSymbols.push(_this250.createResolvedSymbol(symbol, filePath, topLevelSymbolNames, symbolMeta));\n        });\n      }\n\n      var uniqueSymbols = new Set();\n\n      for (var _i9 = 0, _resolvedSymbols = resolvedSymbols; _i9 < _resolvedSymbols.length; _i9++) {\n        var resolvedSymbol = _resolvedSymbols[_i9];\n        this.resolvedSymbols.set(resolvedSymbol.symbol, resolvedSymbol);\n        uniqueSymbols.add(resolvedSymbol.symbol);\n      }\n\n      this.symbolFromFile.set(filePath, Array.from(uniqueSymbols));\n    }\n  }, {\n    key: \"createResolvedSymbol\",\n    value: function createResolvedSymbol(sourceSymbol, topLevelPath, topLevelSymbolNames, metadata) {\n      var _this251 = this;\n\n      // For classes that don't have Angular summaries / metadata,\n      // we only keep their arity, but nothing else\n      // (e.g. their constructor parameters).\n      // We do this to prevent introducing deep imports\n      // as we didn't generate .ngfactory.ts files with proper reexports.\n      var isTsFile = TS.test(sourceSymbol.filePath);\n\n      if (this.summaryResolver.isLibraryFile(sourceSymbol.filePath) && !isTsFile && metadata && metadata['__symbolic'] === 'class') {\n        var _transformedMeta = {\n          __symbolic: 'class',\n          arity: metadata.arity\n        };\n        return new ResolvedStaticSymbol(sourceSymbol, _transformedMeta);\n      }\n\n      var _originalFileMemo;\n\n      var getOriginalName = function getOriginalName() {\n        if (!_originalFileMemo) {\n          // Guess what the original file name is from the reference. If it has a `.d.ts` extension\n          // replace it with `.ts`. If it already has `.ts` just leave it in place. If it doesn't have\n          // .ts or .d.ts, append `.ts'. Also, if it is in `node_modules`, trim the `node_module`\n          // location as it is not important to finding the file.\n          _originalFileMemo = _this251.host.getOutputName(topLevelPath.replace(/((\\.ts)|(\\.d\\.ts)|)$/, '.ts').replace(/^.*node_modules[/\\\\]/, ''));\n        }\n\n        return _originalFileMemo;\n      };\n\n      var self = this;\n\n      var ReferenceTransformer = /*#__PURE__*/function (_ValueTransformer2) {\n        _inherits(ReferenceTransformer, _ValueTransformer2);\n\n        var _super106 = _createSuper(ReferenceTransformer);\n\n        function ReferenceTransformer() {\n          _classCallCheck(this, ReferenceTransformer);\n\n          return _super106.apply(this, arguments);\n        }\n\n        _createClass(ReferenceTransformer, [{\n          key: \"visitStringMap\",\n          value: function visitStringMap(map, functionParams) {\n            var symbolic = map['__symbolic'];\n\n            if (symbolic === 'function') {\n              var oldLen = functionParams.length;\n              functionParams.push.apply(functionParams, _toConsumableArray(map['parameters'] || []));\n\n              var result = _get(_getPrototypeOf(ReferenceTransformer.prototype), \"visitStringMap\", this).call(this, map, functionParams);\n\n              functionParams.length = oldLen;\n              return result;\n            } else if (symbolic === 'reference') {\n              var module = map['module'];\n              var name = map['name'] ? unescapeIdentifier(map['name']) : map['name'];\n\n              if (!name) {\n                return null;\n              }\n\n              var filePath;\n\n              if (module) {\n                filePath = self.resolveModule(module, sourceSymbol.filePath);\n\n                if (!filePath) {\n                  return {\n                    __symbolic: 'error',\n                    message: \"Could not resolve \".concat(module, \" relative to \").concat(self.host.getMetadataFor(sourceSymbol.filePath), \".\"),\n                    line: map['line'],\n                    character: map['character'],\n                    fileName: getOriginalName()\n                  };\n                }\n\n                return {\n                  __symbolic: 'resolved',\n                  symbol: self.getStaticSymbol(filePath, name),\n                  line: map['line'],\n                  character: map['character'],\n                  fileName: getOriginalName()\n                };\n              } else if (functionParams.indexOf(name) >= 0) {\n                // reference to a function parameter\n                return {\n                  __symbolic: 'reference',\n                  name: name\n                };\n              } else {\n                if (topLevelSymbolNames.has(name)) {\n                  return self.getStaticSymbol(topLevelPath, name);\n                } // ambient value\n\n\n                null;\n              }\n            } else if (symbolic === 'error') {\n              return Object.assign(Object.assign({}, map), {\n                fileName: getOriginalName()\n              });\n            } else {\n              return _get(_getPrototypeOf(ReferenceTransformer.prototype), \"visitStringMap\", this).call(this, map, functionParams);\n            }\n          }\n        }]);\n\n        return ReferenceTransformer;\n      }(ValueTransformer);\n\n      var transformedMeta = visitValue(metadata, new ReferenceTransformer(), []);\n      var unwrappedTransformedMeta = unwrapResolvedMetadata(transformedMeta);\n\n      if (unwrappedTransformedMeta instanceof StaticSymbol) {\n        return this.createExport(sourceSymbol, unwrappedTransformedMeta);\n      }\n\n      return new ResolvedStaticSymbol(sourceSymbol, transformedMeta);\n    }\n  }, {\n    key: \"createExport\",\n    value: function createExport(sourceSymbol, targetSymbol) {\n      sourceSymbol.assertNoMembers();\n      targetSymbol.assertNoMembers();\n\n      if (this.summaryResolver.isLibraryFile(sourceSymbol.filePath) && this.summaryResolver.isLibraryFile(targetSymbol.filePath)) {\n        // This case is for an ng library importing symbols from a plain ts library\n        // transitively.\n        // Note: We rely on the fact that we discover symbols in the direction\n        // from source files to library files\n        this.importAs.set(targetSymbol, this.getImportAs(sourceSymbol) || sourceSymbol);\n      }\n\n      return new ResolvedStaticSymbol(sourceSymbol, targetSymbol);\n    }\n  }, {\n    key: \"reportError\",\n    value: function reportError(error, context, path) {\n      if (this.errorRecorder) {\n        this.errorRecorder(error, context && context.filePath || path);\n      } else {\n        throw error;\n      }\n    }\n    /**\n     * @param module an absolute path to a module file.\n     */\n\n  }, {\n    key: \"getModuleMetadata\",\n    value: function getModuleMetadata(module) {\n      var moduleMetadata = this.metadataCache.get(module);\n\n      if (!moduleMetadata) {\n        var moduleMetadatas = this.host.getMetadataFor(module);\n\n        if (moduleMetadatas) {\n          var maxVersion = -1;\n          moduleMetadatas.forEach(function (md) {\n            if (md && md['version'] > maxVersion) {\n              maxVersion = md['version'];\n              moduleMetadata = md;\n            }\n          });\n        }\n\n        if (!moduleMetadata) {\n          moduleMetadata = {\n            __symbolic: 'module',\n            version: SUPPORTED_SCHEMA_VERSION,\n            module: module,\n            metadata: {}\n          };\n        }\n\n        if (moduleMetadata['version'] != SUPPORTED_SCHEMA_VERSION) {\n          var errorMessage = moduleMetadata['version'] == 2 ? \"Unsupported metadata version \".concat(moduleMetadata['version'], \" for module \").concat(module, \". This module should be compiled with a newer version of ngc\") : \"Metadata version mismatch for module \".concat(this.host.getOutputName(module), \", found version \").concat(moduleMetadata['version'], \", expected \").concat(SUPPORTED_SCHEMA_VERSION);\n          this.reportError(new Error(errorMessage));\n        }\n\n        this.metadataCache.set(module, moduleMetadata);\n      }\n\n      return moduleMetadata;\n    }\n  }, {\n    key: \"getSymbolByModule\",\n    value: function getSymbolByModule(module, symbolName, containingFile) {\n      var filePath = this.resolveModule(module, containingFile);\n\n      if (!filePath) {\n        this.reportError(new Error(\"Could not resolve module \".concat(module).concat(containingFile ? ' relative to ' + this.host.getOutputName(containingFile) : '')));\n        return this.getStaticSymbol(\"ERROR:\".concat(module), symbolName);\n      }\n\n      return this.getStaticSymbol(filePath, symbolName);\n    }\n  }, {\n    key: \"resolveModule\",\n    value: function resolveModule(module, containingFile) {\n      try {\n        return this.host.moduleNameToFileName(module, containingFile);\n      } catch (e) {\n        console.error(\"Could not resolve module '\".concat(module, \"' relative to file \").concat(containingFile));\n        this.reportError(e, undefined, containingFile);\n      }\n\n      return null;\n    }\n  }]);\n\n  return StaticSymbolResolver;\n}(); // Remove extra underscore from escaped identifier.\n// See https://github.com/Microsoft/TypeScript/blob/master/src/compiler/utilities.ts\n\n\nfunction unescapeIdentifier(identifier) {\n  return identifier.startsWith('___') ? identifier.substr(1) : identifier;\n}\n\nfunction unwrapResolvedMetadata(metadata) {\n  if (metadata && metadata.__symbolic === 'resolved') {\n    return metadata.symbol;\n  }\n\n  return metadata;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction serializeSummaries(srcFileName, forJitCtx, summaryResolver, symbolResolver, symbols, types) {\n  var createExternalSymbolReexports = arguments.length > 6 && arguments[6] !== undefined ? arguments[6] : false;\n  var toJsonSerializer = new ToJsonSerializer(symbolResolver, summaryResolver, srcFileName); // for symbols, we use everything except for the class metadata itself\n  // (we keep the statics though), as the class metadata is contained in the\n  // CompileTypeSummary.\n\n  symbols.forEach(function (resolvedSymbol) {\n    return toJsonSerializer.addSummary({\n      symbol: resolvedSymbol.symbol,\n      metadata: resolvedSymbol.metadata\n    });\n  }); // Add type summaries.\n\n  types.forEach(function (_ref45) {\n    var summary = _ref45.summary,\n        metadata = _ref45.metadata;\n    toJsonSerializer.addSummary({\n      symbol: summary.type.reference,\n      metadata: undefined,\n      type: summary\n    });\n  });\n\n  var _toJsonSerializer$ser = toJsonSerializer.serialize(createExternalSymbolReexports),\n      json = _toJsonSerializer$ser.json,\n      exportAs = _toJsonSerializer$ser.exportAs;\n\n  if (forJitCtx) {\n    var forJitSerializer = new ForJitSerializer(forJitCtx, symbolResolver, summaryResolver);\n    types.forEach(function (_ref46) {\n      var summary = _ref46.summary,\n          metadata = _ref46.metadata;\n      forJitSerializer.addSourceType(summary, metadata);\n    });\n    toJsonSerializer.unprocessedSymbolSummariesBySymbol.forEach(function (summary) {\n      if (summaryResolver.isLibraryFile(summary.symbol.filePath) && summary.type) {\n        forJitSerializer.addLibType(summary.type);\n      }\n    });\n    forJitSerializer.serialize(exportAs);\n  }\n\n  return {\n    json: json,\n    exportAs: exportAs\n  };\n}\n\nfunction deserializeSummaries(symbolCache, summaryResolver, libraryFileName, json) {\n  var deserializer = new FromJsonDeserializer(symbolCache, summaryResolver);\n  return deserializer.deserialize(libraryFileName, json);\n}\n\nfunction createForJitStub(outputCtx, reference) {\n  return createSummaryForJitFunction(outputCtx, reference, NULL_EXPR);\n}\n\nfunction createSummaryForJitFunction(outputCtx, reference, value) {\n  var fnName = summaryForJitName(reference.name);\n  outputCtx.statements.push(fn([], [new ReturnStatement(value)], new ArrayType(DYNAMIC_TYPE)).toDeclStmt(fnName, [StmtModifier.Final, StmtModifier.Exported]));\n}\n\nvar ToJsonSerializer = /*#__PURE__*/function (_ValueTransformer3) {\n  _inherits(ToJsonSerializer, _ValueTransformer3);\n\n  var _super107 = _createSuper(ToJsonSerializer);\n\n  function ToJsonSerializer(symbolResolver, summaryResolver, srcFileName) {\n    var _this252;\n\n    _classCallCheck(this, ToJsonSerializer);\n\n    _this252 = _super107.call(this);\n    _this252.symbolResolver = symbolResolver;\n    _this252.summaryResolver = summaryResolver;\n    _this252.srcFileName = srcFileName; // Note: This only contains symbols without members.\n\n    _this252.symbols = [];\n    _this252.indexBySymbol = new Map();\n    _this252.reexportedBy = new Map(); // This now contains a `__symbol: number` in the place of\n    // StaticSymbols, but otherwise has the same shape as the original objects.\n\n    _this252.processedSummaryBySymbol = new Map();\n    _this252.processedSummaries = [];\n    _this252.unprocessedSymbolSummariesBySymbol = new Map();\n    _this252.moduleName = symbolResolver.getKnownModuleName(srcFileName);\n    return _this252;\n  }\n\n  _createClass(ToJsonSerializer, [{\n    key: \"addSummary\",\n    value: function addSummary(summary) {\n      var _this253 = this;\n\n      var unprocessedSummary = this.unprocessedSymbolSummariesBySymbol.get(summary.symbol);\n      var processedSummary = this.processedSummaryBySymbol.get(summary.symbol);\n\n      if (!unprocessedSummary) {\n        unprocessedSummary = {\n          symbol: summary.symbol,\n          metadata: undefined\n        };\n        this.unprocessedSymbolSummariesBySymbol.set(summary.symbol, unprocessedSummary);\n        processedSummary = {\n          symbol: this.processValue(summary.symbol, 0\n          /* None */\n          )\n        };\n        this.processedSummaries.push(processedSummary);\n        this.processedSummaryBySymbol.set(summary.symbol, processedSummary);\n      }\n\n      if (!unprocessedSummary.metadata && summary.metadata) {\n        var metadata = summary.metadata || {};\n\n        if (metadata.__symbolic === 'class') {\n          // For classes, we keep everything except their class decorators.\n          // We need to keep e.g. the ctor args, method names, method decorators\n          // so that the class can be extended in another compilation unit.\n          // We don't keep the class decorators as\n          // 1) they refer to data\n          //   that should not cause a rebuild of downstream compilation units\n          //   (e.g. inline templates of @Component, or @NgModule.declarations)\n          // 2) their data is already captured in TypeSummaries, e.g. DirectiveSummary.\n          var clone = {};\n          Object.keys(metadata).forEach(function (propName) {\n            if (propName !== 'decorators') {\n              clone[propName] = metadata[propName];\n            }\n          });\n          metadata = clone;\n        } else if (isCall(metadata)) {\n          if (!isFunctionCall(metadata) && !isMethodCallOnVariable(metadata)) {\n            // Don't store complex calls as we won't be able to simplify them anyways later on.\n            metadata = {\n              __symbolic: 'error',\n              message: 'Complex function calls are not supported.'\n            };\n          }\n        } // Note: We need to keep storing ctor calls for e.g.\n        // `export const x = new InjectionToken(...)`\n\n\n        unprocessedSummary.metadata = metadata;\n        processedSummary.metadata = this.processValue(metadata, 1\n        /* ResolveValue */\n        );\n\n        if (metadata instanceof StaticSymbol && this.summaryResolver.isLibraryFile(metadata.filePath)) {\n          var declarationSymbol = this.symbols[this.indexBySymbol.get(metadata)];\n\n          if (!isLoweredSymbol(declarationSymbol.name)) {\n            // Note: symbols that were introduced during codegen in the user file can have a reexport\n            // if a user used `export *`. However, we can't rely on this as tsickle will change\n            // `export *` into named exports, using only the information from the typechecker.\n            // As we introduce the new symbols after typecheck, Tsickle does not know about them,\n            // and omits them when expanding `export *`.\n            // So we have to keep reexporting these symbols manually via .ngfactory files.\n            this.reexportedBy.set(declarationSymbol, summary.symbol);\n          }\n        }\n      }\n\n      if (!unprocessedSummary.type && summary.type) {\n        unprocessedSummary.type = summary.type; // Note: We don't add the summaries of all referenced symbols as for the ResolvedSymbols,\n        // as the type summaries already contain the transitive data that they require\n        // (in a minimal way).\n\n        processedSummary.type = this.processValue(summary.type, 0\n        /* None */\n        ); // except for reexported directives / pipes, so we need to store\n        // their summaries explicitly.\n\n        if (summary.type.summaryKind === CompileSummaryKind.NgModule) {\n          var ngModuleSummary = summary.type;\n          ngModuleSummary.exportedDirectives.concat(ngModuleSummary.exportedPipes).forEach(function (id) {\n            var symbol = id.reference;\n\n            if (_this253.summaryResolver.isLibraryFile(symbol.filePath) && !_this253.unprocessedSymbolSummariesBySymbol.has(symbol)) {\n              var _summary = _this253.summaryResolver.resolveSummary(symbol);\n\n              if (_summary) {\n                _this253.addSummary(_summary);\n              }\n            }\n          });\n        }\n      }\n    }\n    /**\n     * @param createExternalSymbolReexports Whether external static symbols should be re-exported.\n     * This can be enabled if external symbols should be re-exported by the current module in\n     * order to avoid dynamically generated module dependencies which can break strict dependency\n     * enforcements (as in Google3). Read more here: https://github.com/angular/angular/issues/25644\n     */\n\n  }, {\n    key: \"serialize\",\n    value: function serialize(createExternalSymbolReexports) {\n      var _this254 = this;\n\n      var exportAs = [];\n      var json = JSON.stringify({\n        moduleName: this.moduleName,\n        summaries: this.processedSummaries,\n        symbols: this.symbols.map(function (symbol, index) {\n          symbol.assertNoMembers();\n          var importAs = undefined;\n\n          if (_this254.summaryResolver.isLibraryFile(symbol.filePath)) {\n            var reexportSymbol = _this254.reexportedBy.get(symbol);\n\n            if (reexportSymbol) {\n              // In case the given external static symbol is already manually exported by the\n              // user, we just proxy the external static symbol reference to the manual export.\n              // This ensures that the AOT compiler imports the external symbol through the\n              // user export and does not introduce another dependency which is not needed.\n              importAs = _this254.indexBySymbol.get(reexportSymbol);\n            } else if (createExternalSymbolReexports) {\n              // In this case, the given external static symbol is *not* manually exported by\n              // the user, and we manually create a re-export in the factory file so that we\n              // don't introduce another module dependency. This is useful when running within\n              // Bazel so that the AOT compiler does not introduce any module dependencies\n              // which can break the strict dependency enforcement. (e.g. as in Google3)\n              // Read more about this here: https://github.com/angular/angular/issues/25644\n              var summary = _this254.unprocessedSymbolSummariesBySymbol.get(symbol);\n\n              if (!summary || !summary.metadata || summary.metadata.__symbolic !== 'interface') {\n                importAs = \"\".concat(symbol.name, \"_\").concat(index);\n                exportAs.push({\n                  symbol: symbol,\n                  exportAs: importAs\n                });\n              }\n            }\n          }\n\n          return {\n            __symbol: index,\n            name: symbol.name,\n            filePath: _this254.summaryResolver.toSummaryFileName(symbol.filePath, _this254.srcFileName),\n            importAs: importAs\n          };\n        })\n      });\n      return {\n        json: json,\n        exportAs: exportAs\n      };\n    }\n  }, {\n    key: \"processValue\",\n    value: function processValue(value, flags) {\n      return visitValue(value, this, flags);\n    }\n  }, {\n    key: \"visitOther\",\n    value: function visitOther(value, context) {\n      if (value instanceof StaticSymbol) {\n        var baseSymbol = this.symbolResolver.getStaticSymbol(value.filePath, value.name);\n        var index = this.visitStaticSymbol(baseSymbol, context);\n        return {\n          __symbol: index,\n          members: value.members\n        };\n      }\n    }\n    /**\n     * Strip line and character numbers from ngsummaries.\n     * Emitting them causes white spaces changes to retrigger upstream\n     * recompilations in bazel.\n     * TODO: find out a way to have line and character numbers in errors without\n     * excessive recompilation in bazel.\n     */\n\n  }, {\n    key: \"visitStringMap\",\n    value: function visitStringMap(map, context) {\n      if (map['__symbolic'] === 'resolved') {\n        return visitValue(map['symbol'], this, context);\n      }\n\n      if (map['__symbolic'] === 'error') {\n        delete map['line'];\n        delete map['character'];\n      }\n\n      return _get(_getPrototypeOf(ToJsonSerializer.prototype), \"visitStringMap\", this).call(this, map, context);\n    }\n    /**\n     * Returns null if the options.resolveValue is true, and the summary for the symbol\n     * resolved to a type or could not be resolved.\n     */\n\n  }, {\n    key: \"visitStaticSymbol\",\n    value: function visitStaticSymbol(baseSymbol, flags) {\n      var index = this.indexBySymbol.get(baseSymbol);\n      var summary = null;\n\n      if (flags & 1\n      /* ResolveValue */\n      && this.summaryResolver.isLibraryFile(baseSymbol.filePath)) {\n        if (this.unprocessedSymbolSummariesBySymbol.has(baseSymbol)) {\n          // the summary for this symbol was already added\n          // -> nothing to do.\n          return index;\n        }\n\n        summary = this.loadSummary(baseSymbol);\n\n        if (summary && summary.metadata instanceof StaticSymbol) {\n          // The summary is a reexport\n          index = this.visitStaticSymbol(summary.metadata, flags); // reset the summary as it is just a reexport, so we don't want to store it.\n\n          summary = null;\n        }\n      } else if (index != null) {\n        // Note: == on purpose to compare with undefined!\n        // No summary and the symbol is already added -> nothing to do.\n        return index;\n      } // Note: == on purpose to compare with undefined!\n\n\n      if (index == null) {\n        index = this.symbols.length;\n        this.symbols.push(baseSymbol);\n      }\n\n      this.indexBySymbol.set(baseSymbol, index);\n\n      if (summary) {\n        this.addSummary(summary);\n      }\n\n      return index;\n    }\n  }, {\n    key: \"loadSummary\",\n    value: function loadSummary(symbol) {\n      var summary = this.summaryResolver.resolveSummary(symbol);\n\n      if (!summary) {\n        // some symbols might originate from a plain typescript library\n        // that just exported .d.ts and .metadata.json files, i.e. where no summary\n        // files were created.\n        var resolvedSymbol = this.symbolResolver.resolveSymbol(symbol);\n\n        if (resolvedSymbol) {\n          summary = {\n            symbol: resolvedSymbol.symbol,\n            metadata: resolvedSymbol.metadata\n          };\n        }\n      }\n\n      return summary;\n    }\n  }]);\n\n  return ToJsonSerializer;\n}(ValueTransformer);\n\nvar ForJitSerializer = /*#__PURE__*/function () {\n  function ForJitSerializer(outputCtx, symbolResolver, summaryResolver) {\n    _classCallCheck(this, ForJitSerializer);\n\n    this.outputCtx = outputCtx;\n    this.symbolResolver = symbolResolver;\n    this.summaryResolver = summaryResolver;\n    this.data = [];\n  }\n\n  _createClass(ForJitSerializer, [{\n    key: \"addSourceType\",\n    value: function addSourceType(summary, metadata) {\n      this.data.push({\n        summary: summary,\n        metadata: metadata,\n        isLibrary: false\n      });\n    }\n  }, {\n    key: \"addLibType\",\n    value: function addLibType(summary) {\n      this.data.push({\n        summary: summary,\n        metadata: null,\n        isLibrary: true\n      });\n    }\n  }, {\n    key: \"serialize\",\n    value: function serialize(exportAsArr) {\n      var _this255 = this;\n\n      var exportAsBySymbol = new Map();\n\n      var _iterator29 = _createForOfIteratorHelper(exportAsArr),\n          _step29;\n\n      try {\n        for (_iterator29.s(); !(_step29 = _iterator29.n()).done;) {\n          var _ref49 = _step29.value;\n          var symbol = _ref49.symbol;\n          var exportAs = _ref49.exportAs;\n          exportAsBySymbol.set(symbol, exportAs);\n        }\n      } catch (err) {\n        _iterator29.e(err);\n      } finally {\n        _iterator29.f();\n      }\n\n      var ngModuleSymbols = new Set();\n\n      var _iterator30 = _createForOfIteratorHelper(this.data),\n          _step30;\n\n      try {\n        for (_iterator30.s(); !(_step30 = _iterator30.n()).done;) {\n          var _ref50 = _step30.value;\n          var summary = _ref50.summary;\n          var metadata = _ref50.metadata;\n          var isLibrary = _ref50.isLibrary;\n\n          if (summary.summaryKind === CompileSummaryKind.NgModule) {\n            // collect the symbols that refer to NgModule classes.\n            // Note: we can't just rely on `summary.type.summaryKind` to determine this as\n            // we don't add the summaries of all referenced symbols when we serialize type summaries.\n            // See serializeSummaries for details.\n            ngModuleSymbols.add(summary.type.reference);\n            var modSummary = summary;\n\n            var _iterator31 = _createForOfIteratorHelper(modSummary.modules),\n                _step31;\n\n            try {\n              for (_iterator31.s(); !(_step31 = _iterator31.n()).done;) {\n                var mod = _step31.value;\n                ngModuleSymbols.add(mod.reference);\n              }\n            } catch (err) {\n              _iterator31.e(err);\n            } finally {\n              _iterator31.f();\n            }\n          }\n\n          if (!isLibrary) {\n            var fnName = summaryForJitName(summary.type.reference.name);\n            createSummaryForJitFunction(this.outputCtx, summary.type.reference, this.serializeSummaryWithDeps(summary, metadata));\n          }\n        }\n      } catch (err) {\n        _iterator30.e(err);\n      } finally {\n        _iterator30.f();\n      }\n\n      ngModuleSymbols.forEach(function (ngModuleSymbol) {\n        if (_this255.summaryResolver.isLibraryFile(ngModuleSymbol.filePath)) {\n          var exportAs = exportAsBySymbol.get(ngModuleSymbol) || ngModuleSymbol.name;\n          var jitExportAsName = summaryForJitName(exportAs);\n\n          _this255.outputCtx.statements.push(variable(jitExportAsName).set(_this255.serializeSummaryRef(ngModuleSymbol)).toDeclStmt(null, [StmtModifier.Exported]));\n        }\n      });\n    }\n  }, {\n    key: \"serializeSummaryWithDeps\",\n    value: function serializeSummaryWithDeps(summary, metadata) {\n      var _this256 = this;\n\n      var expressions = [this.serializeSummary(summary)];\n      var providers = [];\n\n      if (metadata instanceof CompileNgModuleMetadata) {\n        expressions.push.apply(expressions, _toConsumableArray( // For directives / pipes, we only add the declared ones,\n        // and rely on transitively importing NgModules to get the transitive\n        // summaries.\n        metadata.declaredDirectives.concat(metadata.declaredPipes).map(function (type) {\n          return type.reference;\n        }) // For modules,\n        // we also add the summaries for modules\n        // from libraries.\n        // This is ok as we produce reexports for all transitive modules.\n        .concat(metadata.transitiveModule.modules.map(function (type) {\n          return type.reference;\n        }).filter(function (ref) {\n          return ref !== metadata.type.reference;\n        })).map(function (ref) {\n          return _this256.serializeSummaryRef(ref);\n        }))); // Note: We don't use `NgModuleSummary.providers`, as that one is transitive,\n        // and we already have transitive modules.\n\n        providers = metadata.providers;\n      } else if (summary.summaryKind === CompileSummaryKind.Directive) {\n        var dirSummary = summary;\n        providers = dirSummary.providers.concat(dirSummary.viewProviders);\n      } // Note: We can't just refer to the `ngsummary.ts` files for `useClass` providers (as we do for\n      // declaredDirectives / declaredPipes), as we allow\n      // providers without ctor arguments to skip the `@Injectable` decorator,\n      // i.e. we didn't generate .ngsummary.ts files for these.\n\n\n      expressions.push.apply(expressions, _toConsumableArray(providers.filter(function (provider) {\n        return !!provider.useClass;\n      }).map(function (provider) {\n        return _this256.serializeSummary({\n          summaryKind: CompileSummaryKind.Injectable,\n          type: provider.useClass\n        });\n      })));\n      return literalArr(expressions);\n    }\n  }, {\n    key: \"serializeSummaryRef\",\n    value: function serializeSummaryRef(typeSymbol) {\n      var jitImportedSymbol = this.symbolResolver.getStaticSymbol(summaryForJitFileName(typeSymbol.filePath), summaryForJitName(typeSymbol.name));\n      return this.outputCtx.importExpr(jitImportedSymbol);\n    }\n  }, {\n    key: \"serializeSummary\",\n    value: function serializeSummary(data) {\n      var outputCtx = this.outputCtx;\n\n      var Transformer = /*#__PURE__*/function () {\n        function Transformer() {\n          _classCallCheck(this, Transformer);\n        }\n\n        _createClass(Transformer, [{\n          key: \"visitArray\",\n          value: function visitArray(arr, context) {\n            var _this257 = this;\n\n            return literalArr(arr.map(function (entry) {\n              return visitValue(entry, _this257, context);\n            }));\n          }\n        }, {\n          key: \"visitStringMap\",\n          value: function visitStringMap(map, context) {\n            var _this258 = this;\n\n            return new LiteralMapExpr(Object.keys(map).map(function (key) {\n              return new LiteralMapEntry(key, visitValue(map[key], _this258, context), false);\n            }));\n          }\n        }, {\n          key: \"visitPrimitive\",\n          value: function visitPrimitive(value, context) {\n            return literal(value);\n          }\n        }, {\n          key: \"visitOther\",\n          value: function visitOther(value, context) {\n            if (value instanceof StaticSymbol) {\n              return outputCtx.importExpr(value);\n            } else {\n              throw new Error(\"Illegal State: Encountered value \".concat(value));\n            }\n          }\n        }]);\n\n        return Transformer;\n      }();\n\n      return visitValue(data, new Transformer(), null);\n    }\n  }]);\n\n  return ForJitSerializer;\n}();\n\nvar FromJsonDeserializer = /*#__PURE__*/function (_ValueTransformer4) {\n  _inherits(FromJsonDeserializer, _ValueTransformer4);\n\n  var _super108 = _createSuper(FromJsonDeserializer);\n\n  function FromJsonDeserializer(symbolCache, summaryResolver) {\n    var _this259;\n\n    _classCallCheck(this, FromJsonDeserializer);\n\n    _this259 = _super108.call(this);\n    _this259.symbolCache = symbolCache;\n    _this259.summaryResolver = summaryResolver;\n    return _this259;\n  }\n\n  _createClass(FromJsonDeserializer, [{\n    key: \"deserialize\",\n    value: function deserialize(libraryFileName, json) {\n      var _this260 = this;\n\n      var data = JSON.parse(json);\n      var allImportAs = [];\n      this.symbols = data.symbols.map(function (serializedSymbol) {\n        return _this260.symbolCache.get(_this260.summaryResolver.fromSummaryFileName(serializedSymbol.filePath, libraryFileName), serializedSymbol.name);\n      });\n      data.symbols.forEach(function (serializedSymbol, index) {\n        var symbol = _this260.symbols[index];\n        var importAs = serializedSymbol.importAs;\n\n        if (typeof importAs === 'number') {\n          allImportAs.push({\n            symbol: symbol,\n            importAs: _this260.symbols[importAs]\n          });\n        } else if (typeof importAs === 'string') {\n          allImportAs.push({\n            symbol: symbol,\n            importAs: _this260.symbolCache.get(ngfactoryFilePath(libraryFileName), importAs)\n          });\n        }\n      });\n      var summaries = visitValue(data.summaries, this, null);\n      return {\n        moduleName: data.moduleName,\n        summaries: summaries,\n        importAs: allImportAs\n      };\n    }\n  }, {\n    key: \"visitStringMap\",\n    value: function visitStringMap(map, context) {\n      if ('__symbol' in map) {\n        var baseSymbol = this.symbols[map['__symbol']];\n        var members = map['members'];\n        return members.length ? this.symbolCache.get(baseSymbol.filePath, baseSymbol.name, members) : baseSymbol;\n      } else {\n        return _get(_getPrototypeOf(FromJsonDeserializer.prototype), \"visitStringMap\", this).call(this, map, context);\n      }\n    }\n  }]);\n\n  return FromJsonDeserializer;\n}(ValueTransformer);\n\nfunction isCall(metadata) {\n  return metadata && metadata.__symbolic === 'call';\n}\n\nfunction isFunctionCall(metadata) {\n  return isCall(metadata) && unwrapResolvedMetadata(metadata.expression) instanceof StaticSymbol;\n}\n\nfunction isMethodCallOnVariable(metadata) {\n  return isCall(metadata) && metadata.expression && metadata.expression.__symbolic === 'select' && unwrapResolvedMetadata(metadata.expression.expression) instanceof StaticSymbol;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar AotCompiler = /*#__PURE__*/function () {\n  function AotCompiler(_config, _options, _host, reflector, _metadataResolver, _templateParser, _styleCompiler, _viewCompiler, _typeCheckCompiler, _ngModuleCompiler, _injectableCompiler, _outputEmitter, _summaryResolver, _symbolResolver) {\n    _classCallCheck(this, AotCompiler);\n\n    this._config = _config;\n    this._options = _options;\n    this._host = _host;\n    this.reflector = reflector;\n    this._metadataResolver = _metadataResolver;\n    this._templateParser = _templateParser;\n    this._styleCompiler = _styleCompiler;\n    this._viewCompiler = _viewCompiler;\n    this._typeCheckCompiler = _typeCheckCompiler;\n    this._ngModuleCompiler = _ngModuleCompiler;\n    this._injectableCompiler = _injectableCompiler;\n    this._outputEmitter = _outputEmitter;\n    this._summaryResolver = _summaryResolver;\n    this._symbolResolver = _symbolResolver;\n    this._templateAstCache = new Map();\n    this._analyzedFiles = new Map();\n    this._analyzedFilesForInjectables = new Map();\n  }\n\n  _createClass(AotCompiler, [{\n    key: \"clearCache\",\n    value: function clearCache() {\n      this._metadataResolver.clearCache();\n    }\n  }, {\n    key: \"analyzeModulesSync\",\n    value: function analyzeModulesSync(rootFiles) {\n      var _this261 = this;\n\n      var analyzeResult = analyzeAndValidateNgModules(rootFiles, this._host, this._symbolResolver, this._metadataResolver);\n      analyzeResult.ngModules.forEach(function (ngModule) {\n        return _this261._metadataResolver.loadNgModuleDirectiveAndPipeMetadata(ngModule.type.reference, true);\n      });\n      return analyzeResult;\n    }\n  }, {\n    key: \"analyzeModulesAsync\",\n    value: function analyzeModulesAsync(rootFiles) {\n      var _this262 = this;\n\n      var analyzeResult = analyzeAndValidateNgModules(rootFiles, this._host, this._symbolResolver, this._metadataResolver);\n      return Promise.all(analyzeResult.ngModules.map(function (ngModule) {\n        return _this262._metadataResolver.loadNgModuleDirectiveAndPipeMetadata(ngModule.type.reference, false);\n      })).then(function () {\n        return analyzeResult;\n      });\n    }\n  }, {\n    key: \"_analyzeFile\",\n    value: function _analyzeFile(fileName) {\n      var analyzedFile = this._analyzedFiles.get(fileName);\n\n      if (!analyzedFile) {\n        analyzedFile = analyzeFile(this._host, this._symbolResolver, this._metadataResolver, fileName);\n\n        this._analyzedFiles.set(fileName, analyzedFile);\n      }\n\n      return analyzedFile;\n    }\n  }, {\n    key: \"_analyzeFileForInjectables\",\n    value: function _analyzeFileForInjectables(fileName) {\n      var analyzedFile = this._analyzedFilesForInjectables.get(fileName);\n\n      if (!analyzedFile) {\n        analyzedFile = analyzeFileForInjectables(this._host, this._symbolResolver, this._metadataResolver, fileName);\n\n        this._analyzedFilesForInjectables.set(fileName, analyzedFile);\n      }\n\n      return analyzedFile;\n    }\n  }, {\n    key: \"findGeneratedFileNames\",\n    value: function findGeneratedFileNames(fileName) {\n      var _this263 = this;\n\n      var genFileNames = [];\n\n      var file = this._analyzeFile(fileName); // Make sure we create a .ngfactory if we have a injectable/directive/pipe/NgModule\n      // or a reference to a non source file.\n      // Note: This is overestimating the required .ngfactory files as the real calculation is harder.\n      // Only do this for StubEmitFlags.Basic, as adding a type check block\n      // does not change this file (as we generate type check blocks based on NgModules).\n\n\n      if (this._options.allowEmptyCodegenFiles || file.directives.length || file.pipes.length || file.injectables.length || file.ngModules.length || file.exportsNonSourceFiles) {\n        genFileNames.push(ngfactoryFilePath(file.fileName, true));\n\n        if (this._options.enableSummariesForJit) {\n          genFileNames.push(summaryForJitFileName(file.fileName, true));\n        }\n      }\n\n      var fileSuffix = normalizeGenFileSuffix(splitTypescriptSuffix(file.fileName, true)[1]);\n      file.directives.forEach(function (dirSymbol) {\n        var compMeta = _this263._metadataResolver.getNonNormalizedDirectiveMetadata(dirSymbol).metadata;\n\n        if (!compMeta.isComponent) {\n          return;\n        } // Note: compMeta is a component and therefore template is non null.\n\n\n        compMeta.template.styleUrls.forEach(function (styleUrl) {\n          var normalizedUrl = _this263._host.resourceNameToFileName(styleUrl, file.fileName);\n\n          if (!normalizedUrl) {\n            throw syntaxError(\"Couldn't resolve resource \".concat(styleUrl, \" relative to \").concat(file.fileName));\n          }\n\n          var needsShim = (compMeta.template.encapsulation || _this263._config.defaultEncapsulation) === ViewEncapsulation.Emulated;\n          genFileNames.push(_stylesModuleUrl(normalizedUrl, needsShim, fileSuffix));\n\n          if (_this263._options.allowEmptyCodegenFiles) {\n            genFileNames.push(_stylesModuleUrl(normalizedUrl, !needsShim, fileSuffix));\n          }\n        });\n      });\n      return genFileNames;\n    }\n  }, {\n    key: \"emitBasicStub\",\n    value: function emitBasicStub(genFileName, originalFileName) {\n      var outputCtx = this._createOutputContext(genFileName);\n\n      if (genFileName.endsWith('.ngfactory.ts')) {\n        if (!originalFileName) {\n          throw new Error(\"Assertion error: require the original file for .ngfactory.ts stubs. File: \".concat(genFileName));\n        }\n\n        var originalFile = this._analyzeFile(originalFileName);\n\n        this._createNgFactoryStub(outputCtx, originalFile, 1\n        /* Basic */\n        );\n      } else if (genFileName.endsWith('.ngsummary.ts')) {\n        if (this._options.enableSummariesForJit) {\n          if (!originalFileName) {\n            throw new Error(\"Assertion error: require the original file for .ngsummary.ts stubs. File: \".concat(genFileName));\n          }\n\n          var _originalFile = this._analyzeFile(originalFileName);\n\n          _createEmptyStub(outputCtx);\n\n          _originalFile.ngModules.forEach(function (ngModule) {\n            // create exports that user code can reference\n            createForJitStub(outputCtx, ngModule.type.reference);\n          });\n        }\n      } else if (genFileName.endsWith('.ngstyle.ts')) {\n        _createEmptyStub(outputCtx);\n      } // Note: for the stubs, we don't need a property srcFileUrl,\n      // as later on in emitAllImpls we will create the proper GeneratedFiles with the\n      // correct srcFileUrl.\n      // This is good as e.g. for .ngstyle.ts files we can't derive\n      // the url of components based on the genFileUrl.\n\n\n      return this._codegenSourceModule('unknown', outputCtx);\n    }\n  }, {\n    key: \"emitTypeCheckStub\",\n    value: function emitTypeCheckStub(genFileName, originalFileName) {\n      var originalFile = this._analyzeFile(originalFileName);\n\n      var outputCtx = this._createOutputContext(genFileName);\n\n      if (genFileName.endsWith('.ngfactory.ts')) {\n        this._createNgFactoryStub(outputCtx, originalFile, 2\n        /* TypeCheck */\n        );\n      }\n\n      return outputCtx.statements.length > 0 ? this._codegenSourceModule(originalFile.fileName, outputCtx) : null;\n    }\n  }, {\n    key: \"loadFilesAsync\",\n    value: function loadFilesAsync(fileNames, tsFiles) {\n      var _this264 = this;\n\n      var files = fileNames.map(function (fileName) {\n        return _this264._analyzeFile(fileName);\n      });\n      var loadingPromises = [];\n      files.forEach(function (file) {\n        return file.ngModules.forEach(function (ngModule) {\n          return loadingPromises.push(_this264._metadataResolver.loadNgModuleDirectiveAndPipeMetadata(ngModule.type.reference, false));\n        });\n      });\n      var analyzedInjectables = tsFiles.map(function (tsFile) {\n        return _this264._analyzeFileForInjectables(tsFile);\n      });\n      return Promise.all(loadingPromises).then(function (_) {\n        return {\n          analyzedModules: mergeAndValidateNgFiles(files),\n          analyzedInjectables: analyzedInjectables\n        };\n      });\n    }\n  }, {\n    key: \"loadFilesSync\",\n    value: function loadFilesSync(fileNames, tsFiles) {\n      var _this265 = this;\n\n      var files = fileNames.map(function (fileName) {\n        return _this265._analyzeFile(fileName);\n      });\n      files.forEach(function (file) {\n        return file.ngModules.forEach(function (ngModule) {\n          return _this265._metadataResolver.loadNgModuleDirectiveAndPipeMetadata(ngModule.type.reference, true);\n        });\n      });\n      var analyzedInjectables = tsFiles.map(function (tsFile) {\n        return _this265._analyzeFileForInjectables(tsFile);\n      });\n      return {\n        analyzedModules: mergeAndValidateNgFiles(files),\n        analyzedInjectables: analyzedInjectables\n      };\n    }\n  }, {\n    key: \"_createNgFactoryStub\",\n    value: function _createNgFactoryStub(outputCtx, file, emitFlags) {\n      var _this266 = this;\n\n      var componentId = 0;\n      file.ngModules.forEach(function (ngModuleMeta, ngModuleIndex) {\n        // Note: the code below needs to executed for StubEmitFlags.Basic and StubEmitFlags.TypeCheck,\n        // so we don't change the .ngfactory file too much when adding the type-check block.\n        // create exports that user code can reference\n        _this266._ngModuleCompiler.createStub(outputCtx, ngModuleMeta.type.reference); // add references to the symbols from the metadata.\n        // These can be used by the type check block for components,\n        // and they also cause TypeScript to include these files into the program too,\n        // which will make them part of the analyzedFiles.\n\n\n        var externalReferences = [].concat(_toConsumableArray(ngModuleMeta.transitiveModule.directives.map(function (d) {\n          return d.reference;\n        })), _toConsumableArray(ngModuleMeta.transitiveModule.pipes.map(function (d) {\n          return d.reference;\n        })), _toConsumableArray(ngModuleMeta.importedModules.map(function (m) {\n          return m.type.reference;\n        })), _toConsumableArray(ngModuleMeta.exportedModules.map(function (m) {\n          return m.type.reference;\n        })), _toConsumableArray(_this266._externalIdentifierReferences([Identifiers.TemplateRef, Identifiers.ElementRef])));\n        var externalReferenceVars = new Map();\n        externalReferences.forEach(function (ref, typeIndex) {\n          externalReferenceVars.set(ref, \"_decl\".concat(ngModuleIndex, \"_\").concat(typeIndex));\n        });\n        externalReferenceVars.forEach(function (varName, reference) {\n          outputCtx.statements.push(variable(varName).set(NULL_EXPR.cast(DYNAMIC_TYPE)).toDeclStmt(expressionType(outputCtx.importExpr(reference,\n          /* typeParams */\n          null,\n          /* useSummaries */\n          false))));\n        });\n\n        if (emitFlags & 2\n        /* TypeCheck */\n        ) {\n          // add the type-check block for all components of the NgModule\n          ngModuleMeta.declaredDirectives.forEach(function (dirId) {\n            var compMeta = _this266._metadataResolver.getDirectiveMetadata(dirId.reference);\n\n            if (!compMeta.isComponent) {\n              return;\n            }\n\n            componentId++;\n\n            _this266._createTypeCheckBlock(outputCtx, \"\".concat(compMeta.type.reference.name, \"_Host_\").concat(componentId), ngModuleMeta, _this266._metadataResolver.getHostComponentMetadata(compMeta), [compMeta.type], externalReferenceVars);\n\n            _this266._createTypeCheckBlock(outputCtx, \"\".concat(compMeta.type.reference.name, \"_\").concat(componentId), ngModuleMeta, compMeta, ngModuleMeta.transitiveModule.directives, externalReferenceVars);\n          });\n        }\n      });\n\n      if (outputCtx.statements.length === 0) {\n        _createEmptyStub(outputCtx);\n      }\n    }\n  }, {\n    key: \"_externalIdentifierReferences\",\n    value: function _externalIdentifierReferences(references) {\n      var result = [];\n\n      var _iterator32 = _createForOfIteratorHelper(references),\n          _step32;\n\n      try {\n        for (_iterator32.s(); !(_step32 = _iterator32.n()).done;) {\n          var reference = _step32.value;\n          var token = createTokenForExternalReference(this.reflector, reference);\n\n          if (token.identifier) {\n            result.push(token.identifier.reference);\n          }\n        }\n      } catch (err) {\n        _iterator32.e(err);\n      } finally {\n        _iterator32.f();\n      }\n\n      return result;\n    }\n  }, {\n    key: \"_createTypeCheckBlock\",\n    value: function _createTypeCheckBlock(ctx, componentId, moduleMeta, compMeta, directives, externalReferenceVars) {\n      var _ctx$statements;\n\n      var _this$_parseTemplate = this._parseTemplate(compMeta, moduleMeta, directives),\n          parsedTemplate = _this$_parseTemplate.template,\n          usedPipes = _this$_parseTemplate.pipes;\n\n      (_ctx$statements = ctx.statements).push.apply(_ctx$statements, _toConsumableArray(this._typeCheckCompiler.compileComponent(componentId, compMeta, parsedTemplate, usedPipes, externalReferenceVars, ctx)));\n    }\n  }, {\n    key: \"emitMessageBundle\",\n    value: function emitMessageBundle(analyzeResult, locale) {\n      var _this267 = this;\n\n      var errors = [];\n      var htmlParser = new HtmlParser(); // TODO(vicb): implicit tags & attributes\n\n      var messageBundle = new MessageBundle(htmlParser, [], {}, locale);\n      analyzeResult.files.forEach(function (file) {\n        var compMetas = [];\n        file.directives.forEach(function (directiveType) {\n          var dirMeta = _this267._metadataResolver.getDirectiveMetadata(directiveType);\n\n          if (dirMeta && dirMeta.isComponent) {\n            compMetas.push(dirMeta);\n          }\n        });\n        compMetas.forEach(function (compMeta) {\n          var html = compMeta.template.template; // Template URL points to either an HTML or TS file depending on whether\n          // the file is used with `templateUrl:` or `template:`, respectively.\n\n          var templateUrl = compMeta.template.templateUrl;\n          var interpolationConfig = InterpolationConfig.fromArray(compMeta.template.interpolation);\n          errors.push.apply(errors, _toConsumableArray(messageBundle.updateFromTemplate(html, templateUrl, interpolationConfig)));\n        });\n      });\n\n      if (errors.length) {\n        throw new Error(errors.map(function (e) {\n          return e.toString();\n        }).join('\\n'));\n      }\n\n      return messageBundle;\n    }\n  }, {\n    key: \"emitAllPartialModules\",\n    value: function emitAllPartialModules(_ref51, r3Files) {\n      var _this268 = this;\n\n      var ngModuleByPipeOrDirective = _ref51.ngModuleByPipeOrDirective,\n          files = _ref51.files;\n      var contextMap = new Map();\n\n      var getContext = function getContext(fileName) {\n        if (!contextMap.has(fileName)) {\n          contextMap.set(fileName, _this268._createOutputContext(fileName));\n        }\n\n        return contextMap.get(fileName);\n      };\n\n      files.forEach(function (file) {\n        return _this268._compilePartialModule(file.fileName, ngModuleByPipeOrDirective, file.directives, file.pipes, file.ngModules, file.injectables, getContext(file.fileName));\n      });\n      r3Files.forEach(function (file) {\n        return _this268._compileShallowModules(file.fileName, file.shallowModules, getContext(file.fileName));\n      });\n      return Array.from(contextMap.values()).map(function (context) {\n        return {\n          fileName: context.genFilePath,\n          statements: [].concat(_toConsumableArray(context.constantPool.statements), _toConsumableArray(context.statements))\n        };\n      });\n    }\n  }, {\n    key: \"_compileShallowModules\",\n    value: function _compileShallowModules(fileName, shallowModules, context) {\n      var _this269 = this;\n\n      shallowModules.forEach(function (module) {\n        return compileNgModuleFromRender2(context, module, _this269._injectableCompiler);\n      });\n    }\n  }, {\n    key: \"_compilePartialModule\",\n    value: function _compilePartialModule(fileName, ngModuleByPipeOrDirective, directives, pipes, ngModules, injectables, context) {\n      var _this270 = this;\n\n      var errors = [];\n      var schemaRegistry = new DomElementSchemaRegistry();\n      var hostBindingParser = new BindingParser(this._templateParser.expressionParser, DEFAULT_INTERPOLATION_CONFIG, schemaRegistry, [], errors); // Process all components and directives\n\n      directives.forEach(function (directiveType) {\n        var directiveMetadata = _this270._metadataResolver.getDirectiveMetadata(directiveType);\n\n        if (directiveMetadata.isComponent) {\n          var module = ngModuleByPipeOrDirective.get(directiveType);\n          module || error(\"Cannot determine the module for component '\".concat(identifierName(directiveMetadata.type), \"'\"));\n          var htmlAst = directiveMetadata.template.htmlAst;\n          var preserveWhitespaces = directiveMetadata.template.preserveWhitespaces;\n\n          if (!preserveWhitespaces) {\n            htmlAst = removeWhitespaces(htmlAst);\n          }\n\n          var render3Ast = htmlAstToRender3Ast(htmlAst.rootNodes, hostBindingParser); // Map of StaticType by directive selectors\n\n          var directiveTypeBySel = new Map();\n\n          var _directives = module.transitiveModule.directives.map(function (dir) {\n            return _this270._metadataResolver.getDirectiveSummary(dir.reference);\n          });\n\n          _directives.forEach(function (directive) {\n            if (directive.selector) {\n              directiveTypeBySel.set(directive.selector, directive.type.reference);\n            }\n          }); // Map of StaticType by pipe names\n\n\n          var pipeTypeByName = new Map();\n\n          var _pipes = module.transitiveModule.pipes.map(function (pipe) {\n            return _this270._metadataResolver.getPipeSummary(pipe.reference);\n          });\n\n          _pipes.forEach(function (pipe) {\n            pipeTypeByName.set(pipe.name, pipe.type.reference);\n          });\n\n          compileComponentFromRender2(context, directiveMetadata, render3Ast, _this270.reflector, hostBindingParser, directiveTypeBySel, pipeTypeByName);\n        } else {\n          compileDirectiveFromRender2(context, directiveMetadata, _this270.reflector, hostBindingParser);\n        }\n      });\n      pipes.forEach(function (pipeType) {\n        var pipeMetadata = _this270._metadataResolver.getPipeMetadata(pipeType);\n\n        if (pipeMetadata) {\n          compilePipeFromRender2(context, pipeMetadata, _this270.reflector);\n        }\n      });\n      injectables.forEach(function (injectable) {\n        return _this270._injectableCompiler.compile(injectable, context);\n      });\n    }\n  }, {\n    key: \"emitAllPartialModules2\",\n    value: function emitAllPartialModules2(files) {\n      var _this271 = this;\n\n      // Using reduce like this is a select many pattern (where map is a select pattern)\n      return files.reduce(function (r, file) {\n        r.push.apply(r, _toConsumableArray(_this271._emitPartialModule2(file.fileName, file.injectables)));\n        return r;\n      }, []);\n    }\n  }, {\n    key: \"_emitPartialModule2\",\n    value: function _emitPartialModule2(fileName, injectables) {\n      var _this272 = this;\n\n      var context = this._createOutputContext(fileName);\n\n      injectables.forEach(function (injectable) {\n        return _this272._injectableCompiler.compile(injectable, context);\n      });\n\n      if (context.statements && context.statements.length > 0) {\n        return [{\n          fileName: fileName,\n          statements: [].concat(_toConsumableArray(context.constantPool.statements), _toConsumableArray(context.statements))\n        }];\n      }\n\n      return [];\n    }\n  }, {\n    key: \"emitAllImpls\",\n    value: function emitAllImpls(analyzeResult) {\n      var _this273 = this;\n\n      var ngModuleByPipeOrDirective = analyzeResult.ngModuleByPipeOrDirective,\n          files = analyzeResult.files;\n      var sourceModules = files.map(function (file) {\n        return _this273._compileImplFile(file.fileName, ngModuleByPipeOrDirective, file.directives, file.pipes, file.ngModules, file.injectables);\n      });\n      return flatten(sourceModules);\n    }\n  }, {\n    key: \"_compileImplFile\",\n    value: function _compileImplFile(srcFileUrl, ngModuleByPipeOrDirective, directives, pipes, ngModules, injectables) {\n      var _this274 = this;\n\n      var fileSuffix = normalizeGenFileSuffix(splitTypescriptSuffix(srcFileUrl, true)[1]);\n      var generatedFiles = [];\n\n      var outputCtx = this._createOutputContext(ngfactoryFilePath(srcFileUrl, true));\n\n      generatedFiles.push.apply(generatedFiles, _toConsumableArray(this._createSummary(srcFileUrl, directives, pipes, ngModules, injectables, outputCtx))); // compile all ng modules\n\n      ngModules.forEach(function (ngModuleMeta) {\n        return _this274._compileModule(outputCtx, ngModuleMeta);\n      }); // compile components\n\n      directives.forEach(function (dirType) {\n        var compMeta = _this274._metadataResolver.getDirectiveMetadata(dirType);\n\n        if (!compMeta.isComponent) {\n          return;\n        }\n\n        var ngModule = ngModuleByPipeOrDirective.get(dirType);\n\n        if (!ngModule) {\n          throw new Error(\"Internal Error: cannot determine the module for component \".concat(identifierName(compMeta.type), \"!\"));\n        } // compile styles\n\n\n        var componentStylesheet = _this274._styleCompiler.compileComponent(outputCtx, compMeta); // Note: compMeta is a component and therefore template is non null.\n\n\n        compMeta.template.externalStylesheets.forEach(function (stylesheetMeta) {\n          // Note: fill non shim and shim style files as they might\n          // be shared by component with and without ViewEncapsulation.\n          var shim = _this274._styleCompiler.needsStyleShim(compMeta);\n\n          generatedFiles.push(_this274._codegenStyles(srcFileUrl, compMeta, stylesheetMeta, shim, fileSuffix));\n\n          if (_this274._options.allowEmptyCodegenFiles) {\n            generatedFiles.push(_this274._codegenStyles(srcFileUrl, compMeta, stylesheetMeta, !shim, fileSuffix));\n          }\n        }); // compile components\n\n        var compViewVars = _this274._compileComponent(outputCtx, compMeta, ngModule, ngModule.transitiveModule.directives, componentStylesheet, fileSuffix);\n\n        _this274._compileComponentFactory(outputCtx, compMeta, ngModule, fileSuffix);\n      });\n\n      if (outputCtx.statements.length > 0 || this._options.allowEmptyCodegenFiles) {\n        var srcModule = this._codegenSourceModule(srcFileUrl, outputCtx);\n\n        generatedFiles.unshift(srcModule);\n      }\n\n      return generatedFiles;\n    }\n  }, {\n    key: \"_createSummary\",\n    value: function _createSummary(srcFileName, directives, pipes, ngModules, injectables, ngFactoryCtx) {\n      var _this275 = this;\n\n      var symbolSummaries = this._symbolResolver.getSymbolsOf(srcFileName).map(function (symbol) {\n        return _this275._symbolResolver.resolveSymbol(symbol);\n      });\n\n      var typeData = [].concat(_toConsumableArray(ngModules.map(function (meta) {\n        return {\n          summary: _this275._metadataResolver.getNgModuleSummary(meta.type.reference),\n          metadata: _this275._metadataResolver.getNgModuleMetadata(meta.type.reference)\n        };\n      })), _toConsumableArray(directives.map(function (ref) {\n        return {\n          summary: _this275._metadataResolver.getDirectiveSummary(ref),\n          metadata: _this275._metadataResolver.getDirectiveMetadata(ref)\n        };\n      })), _toConsumableArray(pipes.map(function (ref) {\n        return {\n          summary: _this275._metadataResolver.getPipeSummary(ref),\n          metadata: _this275._metadataResolver.getPipeMetadata(ref)\n        };\n      })), _toConsumableArray(injectables.map(function (ref) {\n        return {\n          summary: _this275._metadataResolver.getInjectableSummary(ref.symbol),\n          metadata: _this275._metadataResolver.getInjectableSummary(ref.symbol).type\n        };\n      })));\n      var forJitOutputCtx = this._options.enableSummariesForJit ? this._createOutputContext(summaryForJitFileName(srcFileName, true)) : null;\n\n      var _serializeSummaries = serializeSummaries(srcFileName, forJitOutputCtx, this._summaryResolver, this._symbolResolver, symbolSummaries, typeData, this._options.createExternalSymbolFactoryReexports),\n          json = _serializeSummaries.json,\n          exportAs = _serializeSummaries.exportAs;\n\n      exportAs.forEach(function (entry) {\n        ngFactoryCtx.statements.push(variable(entry.exportAs).set(ngFactoryCtx.importExpr(entry.symbol)).toDeclStmt(null, [StmtModifier.Exported]));\n      });\n      var summaryJson = new GeneratedFile(srcFileName, summaryFileName(srcFileName), json);\n      var result = [summaryJson];\n\n      if (forJitOutputCtx) {\n        result.push(this._codegenSourceModule(srcFileName, forJitOutputCtx));\n      }\n\n      return result;\n    }\n  }, {\n    key: \"_compileModule\",\n    value: function _compileModule(outputCtx, ngModule) {\n      var providers = [];\n\n      if (this._options.locale) {\n        var normalizedLocale = this._options.locale.replace(/_/g, '-');\n\n        providers.push({\n          token: createTokenForExternalReference(this.reflector, Identifiers.LOCALE_ID),\n          useValue: normalizedLocale\n        });\n      }\n\n      if (this._options.i18nFormat) {\n        providers.push({\n          token: createTokenForExternalReference(this.reflector, Identifiers.TRANSLATIONS_FORMAT),\n          useValue: this._options.i18nFormat\n        });\n      }\n\n      this._ngModuleCompiler.compile(outputCtx, ngModule, providers);\n    }\n  }, {\n    key: \"_compileComponentFactory\",\n    value: function _compileComponentFactory(outputCtx, compMeta, ngModule, fileSuffix) {\n      var hostMeta = this._metadataResolver.getHostComponentMetadata(compMeta);\n\n      var hostViewFactoryVar = this._compileComponent(outputCtx, hostMeta, ngModule, [compMeta.type], null, fileSuffix).viewClassVar;\n\n      var compFactoryVar = componentFactoryName(compMeta.type.reference);\n      var inputsExprs = [];\n\n      for (var propName in compMeta.inputs) {\n        var templateName = compMeta.inputs[propName]; // Don't quote so that the key gets minified...\n\n        inputsExprs.push(new LiteralMapEntry(propName, literal(templateName), false));\n      }\n\n      var outputsExprs = [];\n\n      for (var _propName in compMeta.outputs) {\n        var _templateName = compMeta.outputs[_propName]; // Don't quote so that the key gets minified...\n\n        outputsExprs.push(new LiteralMapEntry(_propName, literal(_templateName), false));\n      }\n\n      outputCtx.statements.push(variable(compFactoryVar).set(importExpr(Identifiers.createComponentFactory).callFn([literal(compMeta.selector), outputCtx.importExpr(compMeta.type.reference), variable(hostViewFactoryVar), new LiteralMapExpr(inputsExprs), new LiteralMapExpr(outputsExprs), literalArr(compMeta.template.ngContentSelectors.map(function (selector) {\n        return literal(selector);\n      }))])).toDeclStmt(importType(Identifiers.ComponentFactory, [expressionType(outputCtx.importExpr(compMeta.type.reference))], [TypeModifier.Const]), [StmtModifier.Final, StmtModifier.Exported]));\n    }\n  }, {\n    key: \"_compileComponent\",\n    value: function _compileComponent(outputCtx, compMeta, ngModule, directiveIdentifiers, componentStyles, fileSuffix) {\n      var _this$_parseTemplate2 = this._parseTemplate(compMeta, ngModule, directiveIdentifiers),\n          parsedTemplate = _this$_parseTemplate2.template,\n          usedPipes = _this$_parseTemplate2.pipes;\n\n      var stylesExpr = componentStyles ? variable(componentStyles.stylesVar) : literalArr([]);\n\n      var viewResult = this._viewCompiler.compileComponent(outputCtx, compMeta, parsedTemplate, stylesExpr, usedPipes);\n\n      if (componentStyles) {\n        _resolveStyleStatements(this._symbolResolver, componentStyles, this._styleCompiler.needsStyleShim(compMeta), fileSuffix);\n      }\n\n      return viewResult;\n    }\n  }, {\n    key: \"_parseTemplate\",\n    value: function _parseTemplate(compMeta, ngModule, directiveIdentifiers) {\n      var _this276 = this;\n\n      if (this._templateAstCache.has(compMeta.type.reference)) {\n        return this._templateAstCache.get(compMeta.type.reference);\n      }\n\n      var preserveWhitespaces = compMeta.template.preserveWhitespaces;\n      var directives = directiveIdentifiers.map(function (dir) {\n        return _this276._metadataResolver.getDirectiveSummary(dir.reference);\n      });\n      var pipes = ngModule.transitiveModule.pipes.map(function (pipe) {\n        return _this276._metadataResolver.getPipeSummary(pipe.reference);\n      });\n\n      var result = this._templateParser.parse(compMeta, compMeta.template.htmlAst, directives, pipes, ngModule.schemas, templateSourceUrl(ngModule.type, compMeta, compMeta.template), preserveWhitespaces);\n\n      this._templateAstCache.set(compMeta.type.reference, result);\n\n      return result;\n    }\n  }, {\n    key: \"_createOutputContext\",\n    value: function _createOutputContext(genFilePath) {\n      var _this277 = this;\n\n      var importExpr$1 = function importExpr$1(symbol) {\n        var typeParams = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n        var useSummaries = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;\n\n        if (!(symbol instanceof StaticSymbol)) {\n          throw new Error(\"Internal error: unknown identifier \".concat(JSON.stringify(symbol)));\n        }\n\n        var arity = _this277._symbolResolver.getTypeArity(symbol) || 0;\n\n        var _ref52 = _this277._symbolResolver.getImportAs(symbol, useSummaries) || symbol,\n            filePath = _ref52.filePath,\n            name = _ref52.name,\n            members = _ref52.members;\n\n        var importModule = _this277._fileNameToModuleName(filePath, genFilePath); // It should be good enough to compare filePath to genFilePath and if they are equal\n        // there is a self reference. However, ngfactory files generate to .ts but their\n        // symbols have .d.ts so a simple compare is insufficient. They should be canonical\n        // and is tracked by #17705.\n\n\n        var selfReference = _this277._fileNameToModuleName(genFilePath, genFilePath);\n\n        var moduleName = importModule === selfReference ? null : importModule; // If we are in a type expression that refers to a generic type then supply\n        // the required type parameters. If there were not enough type parameters\n        // supplied, supply any as the type. Outside a type expression the reference\n        // should not supply type parameters and be treated as a simple value reference\n        // to the constructor function itself.\n\n        var suppliedTypeParams = typeParams || [];\n        var missingTypeParamsCount = arity - suppliedTypeParams.length;\n        var allTypeParams = suppliedTypeParams.concat(newArray(missingTypeParamsCount, DYNAMIC_TYPE));\n        return members.reduce(function (expr, memberName) {\n          return expr.prop(memberName);\n        }, importExpr(new ExternalReference(moduleName, name, null), allTypeParams));\n      };\n\n      return {\n        statements: [],\n        genFilePath: genFilePath,\n        importExpr: importExpr$1,\n        constantPool: new ConstantPool()\n      };\n    }\n  }, {\n    key: \"_fileNameToModuleName\",\n    value: function _fileNameToModuleName(importedFilePath, containingFilePath) {\n      return this._summaryResolver.getKnownModuleName(importedFilePath) || this._symbolResolver.getKnownModuleName(importedFilePath) || this._host.fileNameToModuleName(importedFilePath, containingFilePath);\n    }\n  }, {\n    key: \"_codegenStyles\",\n    value: function _codegenStyles(srcFileUrl, compMeta, stylesheetMetadata, isShimmed, fileSuffix) {\n      var outputCtx = this._createOutputContext(_stylesModuleUrl(stylesheetMetadata.moduleUrl, isShimmed, fileSuffix));\n\n      var compiledStylesheet = this._styleCompiler.compileStyles(outputCtx, compMeta, stylesheetMetadata, isShimmed);\n\n      _resolveStyleStatements(this._symbolResolver, compiledStylesheet, isShimmed, fileSuffix);\n\n      return this._codegenSourceModule(srcFileUrl, outputCtx);\n    }\n  }, {\n    key: \"_codegenSourceModule\",\n    value: function _codegenSourceModule(srcFileUrl, ctx) {\n      return new GeneratedFile(srcFileUrl, ctx.genFilePath, ctx.statements);\n    }\n  }, {\n    key: \"listLazyRoutes\",\n    value: function listLazyRoutes(entryRoute, analyzedModules) {\n      var self = this;\n\n      if (entryRoute) {\n        var symbol = parseLazyRoute(entryRoute, this.reflector).referencedModule;\n        return visitLazyRoute(symbol);\n      } else if (analyzedModules) {\n        var allLazyRoutes = [];\n\n        var _iterator33 = _createForOfIteratorHelper(analyzedModules.ngModules),\n            _step33;\n\n        try {\n          for (_iterator33.s(); !(_step33 = _iterator33.n()).done;) {\n            var ngModule = _step33.value;\n\n            var lazyRoutes = _listLazyRoutes(ngModule, this.reflector);\n\n            var _iterator34 = _createForOfIteratorHelper(lazyRoutes),\n                _step34;\n\n            try {\n              for (_iterator34.s(); !(_step34 = _iterator34.n()).done;) {\n                var lazyRoute = _step34.value;\n                allLazyRoutes.push(lazyRoute);\n              }\n            } catch (err) {\n              _iterator34.e(err);\n            } finally {\n              _iterator34.f();\n            }\n          }\n        } catch (err) {\n          _iterator33.e(err);\n        } finally {\n          _iterator33.f();\n        }\n\n        return allLazyRoutes;\n      } else {\n        throw new Error(\"Either route or analyzedModules has to be specified!\");\n      }\n\n      function visitLazyRoute(symbol) {\n        var seenRoutes = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : new Set();\n        var allLazyRoutes = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [];\n\n        // Support pointing to default exports, but stop recursing there,\n        // as the StaticReflector does not yet support default exports.\n        if (seenRoutes.has(symbol) || !symbol.name) {\n          return allLazyRoutes;\n        }\n\n        seenRoutes.add(symbol);\n\n        var lazyRoutes = _listLazyRoutes(self._metadataResolver.getNgModuleMetadata(symbol, true), self.reflector);\n\n        var _iterator35 = _createForOfIteratorHelper(lazyRoutes),\n            _step35;\n\n        try {\n          for (_iterator35.s(); !(_step35 = _iterator35.n()).done;) {\n            var _lazyRoute = _step35.value;\n            allLazyRoutes.push(_lazyRoute);\n            visitLazyRoute(_lazyRoute.referencedModule, seenRoutes, allLazyRoutes);\n          }\n        } catch (err) {\n          _iterator35.e(err);\n        } finally {\n          _iterator35.f();\n        }\n\n        return allLazyRoutes;\n      }\n    }\n  }]);\n\n  return AotCompiler;\n}();\n\nfunction _createEmptyStub(outputCtx) {\n  // Note: We need to produce at least one import statement so that\n  // TypeScript knows that the file is an es6 module. Otherwise our generated\n  // exports / imports won't be emitted properly by TypeScript.\n  outputCtx.statements.push(importExpr(Identifiers.ComponentFactory).toStmt());\n}\n\nfunction _resolveStyleStatements(symbolResolver, compileResult, needsShim, fileSuffix) {\n  compileResult.dependencies.forEach(function (dep) {\n    dep.setValue(symbolResolver.getStaticSymbol(_stylesModuleUrl(dep.moduleUrl, needsShim, fileSuffix), dep.name));\n  });\n}\n\nfunction _stylesModuleUrl(stylesheetUrl, shim, suffix) {\n  return \"\".concat(stylesheetUrl).concat(shim ? '.shim' : '', \".ngstyle\").concat(suffix);\n}\n\nfunction analyzeNgModules(fileNames, host, staticSymbolResolver, metadataResolver) {\n  var files = _analyzeFilesIncludingNonProgramFiles(fileNames, host, staticSymbolResolver, metadataResolver);\n\n  return mergeAnalyzedFiles(files);\n}\n\nfunction analyzeAndValidateNgModules(fileNames, host, staticSymbolResolver, metadataResolver) {\n  return validateAnalyzedModules(analyzeNgModules(fileNames, host, staticSymbolResolver, metadataResolver));\n}\n\nfunction validateAnalyzedModules(analyzedModules) {\n  if (analyzedModules.symbolsMissingModule && analyzedModules.symbolsMissingModule.length) {\n    var messages = analyzedModules.symbolsMissingModule.map(function (s) {\n      return \"Cannot determine the module for class \".concat(s.name, \" in \").concat(s.filePath, \"! Add \").concat(s.name, \" to the NgModule to fix it.\");\n    });\n    throw syntaxError(messages.join('\\n'));\n  }\n\n  return analyzedModules;\n} // Analyzes all of the program files,\n// including files that are not part of the program\n// but are referenced by an NgModule.\n\n\nfunction _analyzeFilesIncludingNonProgramFiles(fileNames, host, staticSymbolResolver, metadataResolver) {\n  var seenFiles = new Set();\n  var files = [];\n\n  var visitFile = function visitFile(fileName) {\n    if (seenFiles.has(fileName) || !host.isSourceFile(fileName)) {\n      return false;\n    }\n\n    seenFiles.add(fileName);\n    var analyzedFile = analyzeFile(host, staticSymbolResolver, metadataResolver, fileName);\n    files.push(analyzedFile);\n    analyzedFile.ngModules.forEach(function (ngModule) {\n      ngModule.transitiveModule.modules.forEach(function (modMeta) {\n        return visitFile(modMeta.reference.filePath);\n      });\n    });\n  };\n\n  fileNames.forEach(function (fileName) {\n    return visitFile(fileName);\n  });\n  return files;\n}\n\nfunction analyzeFile(host, staticSymbolResolver, metadataResolver, fileName) {\n  var abstractDirectives = [];\n  var directives = [];\n  var pipes = [];\n  var injectables = [];\n  var ngModules = [];\n  var hasDecorators = staticSymbolResolver.hasDecorators(fileName);\n  var exportsNonSourceFiles = false;\n  var isDeclarationFile = fileName.endsWith('.d.ts'); // Don't analyze .d.ts files that have no decorators as a shortcut\n  // to speed up the analysis. This prevents us from\n  // resolving the references in these files.\n  // Note: exportsNonSourceFiles is only needed when compiling with summaries,\n  // which is not the case when .d.ts files are treated as input files.\n\n  if (!isDeclarationFile || hasDecorators) {\n    staticSymbolResolver.getSymbolsOf(fileName).forEach(function (symbol) {\n      var resolvedSymbol = staticSymbolResolver.resolveSymbol(symbol);\n      var symbolMeta = resolvedSymbol.metadata;\n\n      if (!symbolMeta || symbolMeta.__symbolic === 'error') {\n        return;\n      }\n\n      var isNgSymbol = false;\n\n      if (symbolMeta.__symbolic === 'class') {\n        if (metadataResolver.isDirective(symbol)) {\n          isNgSymbol = true; // This directive either has a selector or doesn't. Selector-less directives get tracked\n          // in abstractDirectives, not directives. The compiler doesn't deal with selector-less\n          // directives at all, really, other than to persist their metadata. This is done so that\n          // apps will have an easier time migrating to Ivy, which requires the selector-less\n          // annotations to be applied.\n\n          if (!metadataResolver.isAbstractDirective(symbol)) {\n            // The directive is an ordinary directive.\n            directives.push(symbol);\n          } else {\n            // The directive has no selector and is an \"abstract\" directive, so track it\n            // accordingly.\n            abstractDirectives.push(symbol);\n          }\n        } else if (metadataResolver.isPipe(symbol)) {\n          isNgSymbol = true;\n          pipes.push(symbol);\n        } else if (metadataResolver.isNgModule(symbol)) {\n          var ngModule = metadataResolver.getNgModuleMetadata(symbol, false);\n\n          if (ngModule) {\n            isNgSymbol = true;\n            ngModules.push(ngModule);\n          }\n        } else if (metadataResolver.isInjectable(symbol)) {\n          isNgSymbol = true;\n          var injectable = metadataResolver.getInjectableMetadata(symbol, null, false);\n\n          if (injectable) {\n            injectables.push(injectable);\n          }\n        }\n      }\n\n      if (!isNgSymbol) {\n        exportsNonSourceFiles = exportsNonSourceFiles || isValueExportingNonSourceFile(host, symbolMeta);\n      }\n    });\n  }\n\n  return {\n    fileName: fileName,\n    directives: directives,\n    abstractDirectives: abstractDirectives,\n    pipes: pipes,\n    ngModules: ngModules,\n    injectables: injectables,\n    exportsNonSourceFiles: exportsNonSourceFiles\n  };\n}\n\nfunction analyzeFileForInjectables(host, staticSymbolResolver, metadataResolver, fileName) {\n  var injectables = [];\n  var shallowModules = [];\n\n  if (staticSymbolResolver.hasDecorators(fileName)) {\n    staticSymbolResolver.getSymbolsOf(fileName).forEach(function (symbol) {\n      var resolvedSymbol = staticSymbolResolver.resolveSymbol(symbol);\n      var symbolMeta = resolvedSymbol.metadata;\n\n      if (!symbolMeta || symbolMeta.__symbolic === 'error') {\n        return;\n      }\n\n      if (symbolMeta.__symbolic === 'class') {\n        if (metadataResolver.isInjectable(symbol)) {\n          var injectable = metadataResolver.getInjectableMetadata(symbol, null, false);\n\n          if (injectable) {\n            injectables.push(injectable);\n          }\n        } else if (metadataResolver.isNgModule(symbol)) {\n          var module = metadataResolver.getShallowModuleMetadata(symbol);\n\n          if (module) {\n            shallowModules.push(module);\n          }\n        }\n      }\n    });\n  }\n\n  return {\n    fileName: fileName,\n    injectables: injectables,\n    shallowModules: shallowModules\n  };\n}\n\nfunction isValueExportingNonSourceFile(host, metadata) {\n  var exportsNonSourceFiles = false;\n\n  var Visitor = /*#__PURE__*/function () {\n    function Visitor() {\n      _classCallCheck(this, Visitor);\n    }\n\n    _createClass(Visitor, [{\n      key: \"visitArray\",\n      value: function visitArray(arr, context) {\n        var _this278 = this;\n\n        arr.forEach(function (v) {\n          return visitValue(v, _this278, context);\n        });\n      }\n    }, {\n      key: \"visitStringMap\",\n      value: function visitStringMap(map, context) {\n        var _this279 = this;\n\n        Object.keys(map).forEach(function (key) {\n          return visitValue(map[key], _this279, context);\n        });\n      }\n    }, {\n      key: \"visitPrimitive\",\n      value: function visitPrimitive(value, context) {}\n    }, {\n      key: \"visitOther\",\n      value: function visitOther(value, context) {\n        if (value instanceof StaticSymbol && !host.isSourceFile(value.filePath)) {\n          exportsNonSourceFiles = true;\n        }\n      }\n    }]);\n\n    return Visitor;\n  }();\n\n  visitValue(metadata, new Visitor(), null);\n  return exportsNonSourceFiles;\n}\n\nfunction mergeAnalyzedFiles(analyzedFiles) {\n  var allNgModules = [];\n  var ngModuleByPipeOrDirective = new Map();\n  var allPipesAndDirectives = new Set();\n  analyzedFiles.forEach(function (af) {\n    af.ngModules.forEach(function (ngModule) {\n      allNgModules.push(ngModule);\n      ngModule.declaredDirectives.forEach(function (d) {\n        return ngModuleByPipeOrDirective.set(d.reference, ngModule);\n      });\n      ngModule.declaredPipes.forEach(function (p) {\n        return ngModuleByPipeOrDirective.set(p.reference, ngModule);\n      });\n    });\n    af.directives.forEach(function (d) {\n      return allPipesAndDirectives.add(d);\n    });\n    af.pipes.forEach(function (p) {\n      return allPipesAndDirectives.add(p);\n    });\n  });\n  var symbolsMissingModule = [];\n  allPipesAndDirectives.forEach(function (ref) {\n    if (!ngModuleByPipeOrDirective.has(ref)) {\n      symbolsMissingModule.push(ref);\n    }\n  });\n  return {\n    ngModules: allNgModules,\n    ngModuleByPipeOrDirective: ngModuleByPipeOrDirective,\n    symbolsMissingModule: symbolsMissingModule,\n    files: analyzedFiles\n  };\n}\n\nfunction mergeAndValidateNgFiles(files) {\n  return validateAnalyzedModules(mergeAnalyzedFiles(files));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar FORMATTED_MESSAGE = 'ngFormattedMessage';\n\nfunction indentStr(level) {\n  if (level <= 0) return '';\n  if (level < 6) return ['', ' ', '  ', '   ', '    ', '     '][level];\n  var half = indentStr(Math.floor(level / 2));\n  return half + half + (level % 2 === 1 ? ' ' : '');\n}\n\nfunction formatChain(chain) {\n  var indent = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;\n  if (!chain) return '';\n  var position = chain.position ? \"\".concat(chain.position.fileName, \"(\").concat(chain.position.line + 1, \",\").concat(chain.position.column + 1, \")\") : '';\n  var prefix = position && indent === 0 ? \"\".concat(position, \": \") : '';\n  var postfix = position && indent !== 0 ? \" at \".concat(position) : '';\n  var message = \"\".concat(prefix).concat(chain.message).concat(postfix);\n\n  if (chain.next) {\n    var _iterator36 = _createForOfIteratorHelper(chain.next),\n        _step36;\n\n    try {\n      for (_iterator36.s(); !(_step36 = _iterator36.n()).done;) {\n        var kid = _step36.value;\n        message += '\\n' + formatChain(kid, indent + 2);\n      }\n    } catch (err) {\n      _iterator36.e(err);\n    } finally {\n      _iterator36.f();\n    }\n  }\n\n  return \"\".concat(indentStr(indent)).concat(message);\n}\n\nfunction formattedError(chain) {\n  var message = formatChain(chain) + '.';\n  var error = syntaxError(message);\n  error[FORMATTED_MESSAGE] = true;\n  error.chain = chain;\n  error.position = chain.position;\n  return error;\n}\n\nfunction isFormattedError(error) {\n  return !!error[FORMATTED_MESSAGE];\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ANGULAR_CORE = '@angular/core';\nvar ANGULAR_ROUTER = '@angular/router';\nvar HIDDEN_KEY = /^\\$.*\\$$/;\nvar IGNORE = {\n  __symbolic: 'ignore'\n};\nvar USE_VALUE$1 = 'useValue';\nvar PROVIDE = 'provide';\nvar REFERENCE_SET = new Set([USE_VALUE$1, 'useFactory', 'data', 'id', 'loadChildren']);\nvar TYPEGUARD_POSTFIX = 'TypeGuard';\nvar USE_IF = 'UseIf';\n\nfunction shouldIgnore(value) {\n  return value && value.__symbolic == 'ignore';\n}\n/**\n * A static reflector implements enough of the Reflector API that is necessary to compile\n * templates statically.\n */\n\n\nvar StaticReflector = /*#__PURE__*/function () {\n  function StaticReflector(summaryResolver, symbolResolver) {\n    var _this280 = this;\n\n    var knownMetadataClasses = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [];\n    var knownMetadataFunctions = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : [];\n    var errorRecorder = arguments.length > 4 ? arguments[4] : undefined;\n\n    _classCallCheck(this, StaticReflector);\n\n    this.summaryResolver = summaryResolver;\n    this.symbolResolver = symbolResolver;\n    this.errorRecorder = errorRecorder;\n    this.annotationCache = new Map();\n    this.shallowAnnotationCache = new Map();\n    this.propertyCache = new Map();\n    this.parameterCache = new Map();\n    this.methodCache = new Map();\n    this.staticCache = new Map();\n    this.conversionMap = new Map();\n    this.resolvedExternalReferences = new Map();\n    this.annotationForParentClassWithSummaryKind = new Map();\n    this.initializeConversionMap();\n    knownMetadataClasses.forEach(function (kc) {\n      return _this280._registerDecoratorOrConstructor(_this280.getStaticSymbol(kc.filePath, kc.name), kc.ctor);\n    });\n    knownMetadataFunctions.forEach(function (kf) {\n      return _this280._registerFunction(_this280.getStaticSymbol(kf.filePath, kf.name), kf.fn);\n    });\n    this.annotationForParentClassWithSummaryKind.set(CompileSummaryKind.Directive, [createDirective, createComponent]);\n    this.annotationForParentClassWithSummaryKind.set(CompileSummaryKind.Pipe, [createPipe]);\n    this.annotationForParentClassWithSummaryKind.set(CompileSummaryKind.NgModule, [createNgModule]);\n    this.annotationForParentClassWithSummaryKind.set(CompileSummaryKind.Injectable, [createInjectable, createPipe, createDirective, createComponent, createNgModule]);\n  }\n\n  _createClass(StaticReflector, [{\n    key: \"componentModuleUrl\",\n    value: function componentModuleUrl(typeOrFunc) {\n      var staticSymbol = this.findSymbolDeclaration(typeOrFunc);\n      return this.symbolResolver.getResourcePath(staticSymbol);\n    }\n    /**\n     * Invalidate the specified `symbols` on program change.\n     * @param symbols\n     */\n\n  }, {\n    key: \"invalidateSymbols\",\n    value: function invalidateSymbols(symbols) {\n      var _iterator37 = _createForOfIteratorHelper(symbols),\n          _step37;\n\n      try {\n        for (_iterator37.s(); !(_step37 = _iterator37.n()).done;) {\n          var symbol = _step37.value;\n          this.annotationCache.delete(symbol);\n          this.shallowAnnotationCache.delete(symbol);\n          this.propertyCache.delete(symbol);\n          this.parameterCache.delete(symbol);\n          this.methodCache.delete(symbol);\n          this.staticCache.delete(symbol);\n          this.conversionMap.delete(symbol);\n        }\n      } catch (err) {\n        _iterator37.e(err);\n      } finally {\n        _iterator37.f();\n      }\n    }\n  }, {\n    key: \"resolveExternalReference\",\n    value: function resolveExternalReference(ref, containingFile) {\n      var key = undefined;\n\n      if (!containingFile) {\n        key = \"\".concat(ref.moduleName, \":\").concat(ref.name);\n\n        var _declarationSymbol = this.resolvedExternalReferences.get(key);\n\n        if (_declarationSymbol) return _declarationSymbol;\n      }\n\n      var refSymbol = this.symbolResolver.getSymbolByModule(ref.moduleName, ref.name, containingFile);\n      var declarationSymbol = this.findSymbolDeclaration(refSymbol);\n\n      if (!containingFile) {\n        this.symbolResolver.recordModuleNameForFileName(refSymbol.filePath, ref.moduleName);\n        this.symbolResolver.recordImportAs(declarationSymbol, refSymbol);\n      }\n\n      if (key) {\n        this.resolvedExternalReferences.set(key, declarationSymbol);\n      }\n\n      return declarationSymbol;\n    }\n  }, {\n    key: \"findDeclaration\",\n    value: function findDeclaration(moduleUrl, name, containingFile) {\n      return this.findSymbolDeclaration(this.symbolResolver.getSymbolByModule(moduleUrl, name, containingFile));\n    }\n  }, {\n    key: \"tryFindDeclaration\",\n    value: function tryFindDeclaration(moduleUrl, name, containingFile) {\n      var _this281 = this;\n\n      return this.symbolResolver.ignoreErrorsFor(function () {\n        return _this281.findDeclaration(moduleUrl, name, containingFile);\n      });\n    }\n  }, {\n    key: \"findSymbolDeclaration\",\n    value: function findSymbolDeclaration(symbol) {\n      var resolvedSymbol = this.symbolResolver.resolveSymbol(symbol);\n\n      if (resolvedSymbol) {\n        var resolvedMetadata = resolvedSymbol.metadata;\n\n        if (resolvedMetadata && resolvedMetadata.__symbolic === 'resolved') {\n          resolvedMetadata = resolvedMetadata.symbol;\n        }\n\n        if (resolvedMetadata instanceof StaticSymbol) {\n          return this.findSymbolDeclaration(resolvedSymbol.metadata);\n        }\n      }\n\n      return symbol;\n    }\n  }, {\n    key: \"tryAnnotations\",\n    value: function tryAnnotations(type) {\n      var originalRecorder = this.errorRecorder;\n\n      this.errorRecorder = function (error, fileName) {};\n\n      try {\n        return this.annotations(type);\n      } finally {\n        this.errorRecorder = originalRecorder;\n      }\n    }\n  }, {\n    key: \"annotations\",\n    value: function annotations(type) {\n      var _this282 = this;\n\n      return this._annotations(type, function (type, decorators) {\n        return _this282.simplify(type, decorators);\n      }, this.annotationCache);\n    }\n  }, {\n    key: \"shallowAnnotations\",\n    value: function shallowAnnotations(type) {\n      var _this283 = this;\n\n      return this._annotations(type, function (type, decorators) {\n        return _this283.simplify(type, decorators, true);\n      }, this.shallowAnnotationCache);\n    }\n  }, {\n    key: \"_annotations\",\n    value: function _annotations(type, simplify, annotationCache) {\n      var annotations = annotationCache.get(type);\n\n      if (!annotations) {\n        annotations = [];\n        var classMetadata = this.getTypeMetadata(type);\n        var parentType = this.findParentType(type, classMetadata);\n\n        if (parentType) {\n          var _annotations2;\n\n          var parentAnnotations = this.annotations(parentType);\n\n          (_annotations2 = annotations).push.apply(_annotations2, _toConsumableArray(parentAnnotations));\n        }\n\n        var ownAnnotations = [];\n\n        if (classMetadata['decorators']) {\n          ownAnnotations = simplify(type, classMetadata['decorators']);\n\n          if (ownAnnotations) {\n            var _annotations3;\n\n            (_annotations3 = annotations).push.apply(_annotations3, _toConsumableArray(ownAnnotations));\n          }\n        }\n\n        if (parentType && !this.summaryResolver.isLibraryFile(type.filePath) && this.summaryResolver.isLibraryFile(parentType.filePath)) {\n          var summary = this.summaryResolver.resolveSummary(parentType);\n\n          if (summary && summary.type) {\n            var requiredAnnotationTypes = this.annotationForParentClassWithSummaryKind.get(summary.type.summaryKind);\n            var typeHasRequiredAnnotation = requiredAnnotationTypes.some(function (requiredType) {\n              return ownAnnotations.some(function (ann) {\n                return requiredType.isTypeOf(ann);\n              });\n            });\n\n            if (!typeHasRequiredAnnotation) {\n              this.reportError(formatMetadataError(metadataError(\"Class \".concat(type.name, \" in \").concat(type.filePath, \" extends from a \").concat(CompileSummaryKind[summary.type.summaryKind], \" in another compilation unit without duplicating the decorator\"),\n              /* summary */\n              undefined, \"Please add a \".concat(requiredAnnotationTypes.map(function (type) {\n                return type.ngMetadataName;\n              }).join(' or '), \" decorator to the class\")), type), type);\n            }\n          }\n        }\n\n        annotationCache.set(type, annotations.filter(function (ann) {\n          return !!ann;\n        }));\n      }\n\n      return annotations;\n    }\n  }, {\n    key: \"propMetadata\",\n    value: function propMetadata(type) {\n      var _this284 = this;\n\n      var propMetadata = this.propertyCache.get(type);\n\n      if (!propMetadata) {\n        var classMetadata = this.getTypeMetadata(type);\n        propMetadata = {};\n        var parentType = this.findParentType(type, classMetadata);\n\n        if (parentType) {\n          var parentPropMetadata = this.propMetadata(parentType);\n          Object.keys(parentPropMetadata).forEach(function (parentProp) {\n            propMetadata[parentProp] = parentPropMetadata[parentProp];\n          });\n        }\n\n        var members = classMetadata['members'] || {};\n        Object.keys(members).forEach(function (propName) {\n          var propData = members[propName];\n          var prop = propData.find(function (a) {\n            return a['__symbolic'] == 'property' || a['__symbolic'] == 'method';\n          });\n          var decorators = []; // hasOwnProperty() is used here to make sure we do not look up methods\n          // on `Object.prototype`.\n\n          if (propMetadata === null || propMetadata === void 0 ? void 0 : propMetadata.hasOwnProperty(propName)) {\n            decorators.push.apply(decorators, _toConsumableArray(propMetadata[propName]));\n          }\n\n          propMetadata[propName] = decorators;\n\n          if (prop && prop['decorators']) {\n            decorators.push.apply(decorators, _toConsumableArray(_this284.simplify(type, prop['decorators'])));\n          }\n        });\n        this.propertyCache.set(type, propMetadata);\n      }\n\n      return propMetadata;\n    }\n  }, {\n    key: \"parameters\",\n    value: function parameters(type) {\n      var _this285 = this;\n\n      if (!(type instanceof StaticSymbol)) {\n        this.reportError(new Error(\"parameters received \".concat(JSON.stringify(type), \" which is not a StaticSymbol\")), type);\n        return [];\n      }\n\n      try {\n        var parameters = this.parameterCache.get(type);\n\n        if (!parameters) {\n          var classMetadata = this.getTypeMetadata(type);\n          var parentType = this.findParentType(type, classMetadata);\n          var members = classMetadata ? classMetadata['members'] : null;\n          var ctorData = members ? members['__ctor__'] : null;\n\n          if (ctorData) {\n            var ctor = ctorData.find(function (a) {\n              return a['__symbolic'] == 'constructor';\n            });\n            var rawParameterTypes = ctor['parameters'] || [];\n            var parameterDecorators = this.simplify(type, ctor['parameterDecorators'] || []);\n            parameters = [];\n            rawParameterTypes.forEach(function (rawParamType, index) {\n              var nestedResult = [];\n\n              var paramType = _this285.trySimplify(type, rawParamType);\n\n              if (paramType) nestedResult.push(paramType);\n              var decorators = parameterDecorators ? parameterDecorators[index] : null;\n\n              if (decorators) {\n                nestedResult.push.apply(nestedResult, _toConsumableArray(decorators));\n              }\n\n              parameters.push(nestedResult);\n            });\n          } else if (parentType) {\n            parameters = this.parameters(parentType);\n          }\n\n          if (!parameters) {\n            parameters = [];\n          }\n\n          this.parameterCache.set(type, parameters);\n        }\n\n        return parameters;\n      } catch (e) {\n        console.error(\"Failed on type \".concat(JSON.stringify(type), \" with error \").concat(e));\n        throw e;\n      }\n    }\n  }, {\n    key: \"_methodNames\",\n    value: function _methodNames(type) {\n      var methodNames = this.methodCache.get(type);\n\n      if (!methodNames) {\n        var classMetadata = this.getTypeMetadata(type);\n        methodNames = {};\n        var parentType = this.findParentType(type, classMetadata);\n\n        if (parentType) {\n          var parentMethodNames = this._methodNames(parentType);\n\n          Object.keys(parentMethodNames).forEach(function (parentProp) {\n            methodNames[parentProp] = parentMethodNames[parentProp];\n          });\n        }\n\n        var members = classMetadata['members'] || {};\n        Object.keys(members).forEach(function (propName) {\n          var propData = members[propName];\n          var isMethod = propData.some(function (a) {\n            return a['__symbolic'] == 'method';\n          });\n          methodNames[propName] = methodNames[propName] || isMethod;\n        });\n        this.methodCache.set(type, methodNames);\n      }\n\n      return methodNames;\n    }\n  }, {\n    key: \"_staticMembers\",\n    value: function _staticMembers(type) {\n      var staticMembers = this.staticCache.get(type);\n\n      if (!staticMembers) {\n        var classMetadata = this.getTypeMetadata(type);\n        var staticMemberData = classMetadata['statics'] || {};\n        staticMembers = Object.keys(staticMemberData);\n        this.staticCache.set(type, staticMembers);\n      }\n\n      return staticMembers;\n    }\n  }, {\n    key: \"findParentType\",\n    value: function findParentType(type, classMetadata) {\n      var parentType = this.trySimplify(type, classMetadata['extends']);\n\n      if (parentType instanceof StaticSymbol) {\n        return parentType;\n      }\n    }\n  }, {\n    key: \"hasLifecycleHook\",\n    value: function hasLifecycleHook(type, lcProperty) {\n      if (!(type instanceof StaticSymbol)) {\n        this.reportError(new Error(\"hasLifecycleHook received \".concat(JSON.stringify(type), \" which is not a StaticSymbol\")), type);\n      }\n\n      try {\n        return !!this._methodNames(type)[lcProperty];\n      } catch (e) {\n        console.error(\"Failed on type \".concat(JSON.stringify(type), \" with error \").concat(e));\n        throw e;\n      }\n    }\n  }, {\n    key: \"guards\",\n    value: function guards(type) {\n      if (!(type instanceof StaticSymbol)) {\n        this.reportError(new Error(\"guards received \".concat(JSON.stringify(type), \" which is not a StaticSymbol\")), type);\n        return {};\n      }\n\n      var staticMembers = this._staticMembers(type);\n\n      var result = {};\n\n      var _iterator38 = _createForOfIteratorHelper(staticMembers),\n          _step38;\n\n      try {\n        for (_iterator38.s(); !(_step38 = _iterator38.n()).done;) {\n          var name = _step38.value;\n\n          if (name.endsWith(TYPEGUARD_POSTFIX)) {\n            var property = name.substr(0, name.length - TYPEGUARD_POSTFIX.length);\n            var value = void 0;\n\n            if (property.endsWith(USE_IF)) {\n              property = name.substr(0, property.length - USE_IF.length);\n              value = USE_IF;\n            } else {\n              value = this.getStaticSymbol(type.filePath, type.name, [name]);\n            }\n\n            result[property] = value;\n          }\n        }\n      } catch (err) {\n        _iterator38.e(err);\n      } finally {\n        _iterator38.f();\n      }\n\n      return result;\n    }\n  }, {\n    key: \"_registerDecoratorOrConstructor\",\n    value: function _registerDecoratorOrConstructor(type, ctor) {\n      this.conversionMap.set(type, function (context, args) {\n        return _construct(ctor, _toConsumableArray(args));\n      });\n    }\n  }, {\n    key: \"_registerFunction\",\n    value: function _registerFunction(type, fn) {\n      this.conversionMap.set(type, function (context, args) {\n        return fn.apply(undefined, args);\n      });\n    }\n  }, {\n    key: \"initializeConversionMap\",\n    value: function initializeConversionMap() {\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'Injectable'), createInjectable);\n\n      this.injectionToken = this.findDeclaration(ANGULAR_CORE, 'InjectionToken');\n      this.opaqueToken = this.findDeclaration(ANGULAR_CORE, 'OpaqueToken');\n      this.ROUTES = this.tryFindDeclaration(ANGULAR_ROUTER, 'ROUTES');\n      this.ANALYZE_FOR_ENTRY_COMPONENTS = this.findDeclaration(ANGULAR_CORE, 'ANALYZE_FOR_ENTRY_COMPONENTS');\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'Host'), createHost);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'Self'), createSelf);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'SkipSelf'), createSkipSelf);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'Inject'), createInject);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'Optional'), createOptional);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'Attribute'), createAttribute);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'ContentChild'), createContentChild);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'ContentChildren'), createContentChildren);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'ViewChild'), createViewChild);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'ViewChildren'), createViewChildren);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'Input'), createInput);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'Output'), createOutput);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'Pipe'), createPipe);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'HostBinding'), createHostBinding);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'HostListener'), createHostListener);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'Directive'), createDirective);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'Component'), createComponent);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'NgModule'), createNgModule); // Note: Some metadata classes can be used directly with Provider.deps.\n\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'Host'), createHost);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'Self'), createSelf);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'SkipSelf'), createSkipSelf);\n\n      this._registerDecoratorOrConstructor(this.findDeclaration(ANGULAR_CORE, 'Optional'), createOptional);\n    }\n    /**\n     * getStaticSymbol produces a Type whose metadata is known but whose implementation is not loaded.\n     * All types passed to the StaticResolver should be pseudo-types returned by this method.\n     *\n     * @param declarationFile the absolute path of the file where the symbol is declared\n     * @param name the name of the type.\n     */\n\n  }, {\n    key: \"getStaticSymbol\",\n    value: function getStaticSymbol(declarationFile, name, members) {\n      return this.symbolResolver.getStaticSymbol(declarationFile, name, members);\n    }\n    /**\n     * Simplify but discard any errors\n     */\n\n  }, {\n    key: \"trySimplify\",\n    value: function trySimplify(context, value) {\n      var originalRecorder = this.errorRecorder;\n\n      this.errorRecorder = function (error, fileName) {};\n\n      var result = this.simplify(context, value);\n      this.errorRecorder = originalRecorder;\n      return result;\n    }\n    /** @internal */\n\n  }, {\n    key: \"simplify\",\n    value: function simplify(context, value) {\n      var lazy = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n      var self = this;\n      var scope = BindingScope$1.empty;\n      var calling = new Map();\n      var rootContext = context;\n\n      function simplifyInContext(context, value, depth, references) {\n        function resolveReferenceValue(staticSymbol) {\n          var resolvedSymbol = self.symbolResolver.resolveSymbol(staticSymbol);\n          return resolvedSymbol ? resolvedSymbol.metadata : null;\n        }\n\n        function simplifyEagerly(value) {\n          return simplifyInContext(context, value, depth, 0);\n        }\n\n        function simplifyLazily(value) {\n          return simplifyInContext(context, value, depth, references + 1);\n        }\n\n        function simplifyNested(nestedContext, value) {\n          if (nestedContext === context) {\n            // If the context hasn't changed let the exception propagate unmodified.\n            return simplifyInContext(nestedContext, value, depth + 1, references);\n          }\n\n          try {\n            return simplifyInContext(nestedContext, value, depth + 1, references);\n          } catch (e) {\n            if (isMetadataError(e)) {\n              // Propagate the message text up but add a message to the chain that explains how we got\n              // here.\n              // e.chain implies e.symbol\n              var summaryMsg = e.chain ? 'references \\'' + e.symbol.name + '\\'' : errorSummary(e);\n              var summary = \"'\".concat(nestedContext.name, \"' \").concat(summaryMsg);\n              var chain = {\n                message: summary,\n                position: e.position,\n                next: e.chain\n              }; // TODO(chuckj): retrieve the position information indirectly from the collectors node\n              // map if the metadata is from a .ts file.\n\n              self.error({\n                message: e.message,\n                advise: e.advise,\n                context: e.context,\n                chain: chain,\n                symbol: nestedContext\n              }, context);\n            } else {\n              // It is probably an internal error.\n              throw e;\n            }\n          }\n        }\n\n        function simplifyCall(functionSymbol, targetFunction, args, targetExpression) {\n          if (targetFunction && targetFunction['__symbolic'] == 'function') {\n            if (calling.get(functionSymbol)) {\n              self.error({\n                message: 'Recursion is not supported',\n                summary: \"called '\".concat(functionSymbol.name, \"' recursively\"),\n                value: targetFunction\n              }, functionSymbol);\n            }\n\n            try {\n              var _value6 = targetFunction['value'];\n\n              if (_value6 && (depth != 0 || _value6.__symbolic != 'error')) {\n                var parameters = targetFunction['parameters'];\n                var defaults = targetFunction.defaults;\n                args = args.map(function (arg) {\n                  return simplifyNested(context, arg);\n                }).map(function (arg) {\n                  return shouldIgnore(arg) ? undefined : arg;\n                });\n\n                if (defaults && defaults.length > args.length) {\n                  var _args2;\n\n                  (_args2 = args).push.apply(_args2, _toConsumableArray(defaults.slice(args.length).map(function (value) {\n                    return simplify(value);\n                  })));\n                }\n\n                calling.set(functionSymbol, true);\n                var functionScope = BindingScope$1.build();\n\n                for (var i = 0; i < parameters.length; i++) {\n                  functionScope.define(parameters[i], args[i]);\n                }\n\n                var oldScope = scope;\n\n                var _result;\n\n                try {\n                  scope = functionScope.done();\n                  _result = simplifyNested(functionSymbol, _value6);\n                } finally {\n                  scope = oldScope;\n                }\n\n                return _result;\n              }\n            } finally {\n              calling.delete(functionSymbol);\n            }\n          }\n\n          if (depth === 0) {\n            // If depth is 0 we are evaluating the top level expression that is describing element\n            // decorator. In this case, it is a decorator we don't understand, such as a custom\n            // non-angular decorator, and we should just ignore it.\n            return IGNORE;\n          }\n\n          var position = undefined;\n\n          if (targetExpression && targetExpression.__symbolic == 'resolved') {\n            var line = targetExpression.line;\n            var character = targetExpression.character;\n            var fileName = targetExpression.fileName;\n\n            if (fileName != null && line != null && character != null) {\n              position = {\n                fileName: fileName,\n                line: line,\n                column: character\n              };\n            }\n          }\n\n          self.error({\n            message: FUNCTION_CALL_NOT_SUPPORTED,\n            context: functionSymbol,\n            value: targetFunction,\n            position: position\n          }, context);\n        }\n\n        function simplify(expression) {\n          if (isPrimitive(expression)) {\n            return expression;\n          }\n\n          if (Array.isArray(expression)) {\n            var _result2 = [];\n\n            var _iterator39 = _createForOfIteratorHelper(expression),\n                _step39;\n\n            try {\n              for (_iterator39.s(); !(_step39 = _iterator39.n()).done;) {\n                var item = _step39.value;\n\n                // Check for a spread expression\n                if (item && item.__symbolic === 'spread') {\n                  // We call with references as 0 because we require the actual value and cannot\n                  // tolerate a reference here.\n                  var spreadArray = simplifyEagerly(item.expression);\n\n                  if (Array.isArray(spreadArray)) {\n                    var _iterator40 = _createForOfIteratorHelper(spreadArray),\n                        _step40;\n\n                    try {\n                      for (_iterator40.s(); !(_step40 = _iterator40.n()).done;) {\n                        var spreadItem = _step40.value;\n\n                        _result2.push(spreadItem);\n                      }\n                    } catch (err) {\n                      _iterator40.e(err);\n                    } finally {\n                      _iterator40.f();\n                    }\n\n                    continue;\n                  }\n                }\n\n                var _value7 = simplify(item);\n\n                if (shouldIgnore(_value7)) {\n                  continue;\n                }\n\n                _result2.push(_value7);\n              }\n            } catch (err) {\n              _iterator39.e(err);\n            } finally {\n              _iterator39.f();\n            }\n\n            return _result2;\n          }\n\n          if (expression instanceof StaticSymbol) {\n            // Stop simplification at builtin symbols or if we are in a reference context and\n            // the symbol doesn't have members.\n            if (expression === self.injectionToken || self.conversionMap.has(expression) || references > 0 && !expression.members.length) {\n              return expression;\n            } else {\n              var staticSymbol = expression;\n              var declarationValue = resolveReferenceValue(staticSymbol);\n\n              if (declarationValue != null) {\n                return simplifyNested(staticSymbol, declarationValue);\n              } else {\n                return staticSymbol;\n              }\n            }\n          }\n\n          if (expression) {\n            if (expression['__symbolic']) {\n              var _staticSymbol;\n\n              switch (expression['__symbolic']) {\n                case 'binop':\n                  var left = simplify(expression['left']);\n                  if (shouldIgnore(left)) return left;\n                  var right = simplify(expression['right']);\n                  if (shouldIgnore(right)) return right;\n\n                  switch (expression['operator']) {\n                    case '&&':\n                      return left && right;\n\n                    case '||':\n                      return left || right;\n\n                    case '|':\n                      return left | right;\n\n                    case '^':\n                      return left ^ right;\n\n                    case '&':\n                      return left & right;\n\n                    case '==':\n                      return left == right;\n\n                    case '!=':\n                      return left != right;\n\n                    case '===':\n                      return left === right;\n\n                    case '!==':\n                      return left !== right;\n\n                    case '<':\n                      return left < right;\n\n                    case '>':\n                      return left > right;\n\n                    case '<=':\n                      return left <= right;\n\n                    case '>=':\n                      return left >= right;\n\n                    case '<<':\n                      return left << right;\n\n                    case '>>':\n                      return left >> right;\n\n                    case '+':\n                      return left + right;\n\n                    case '-':\n                      return left - right;\n\n                    case '*':\n                      return left * right;\n\n                    case '/':\n                      return left / right;\n\n                    case '%':\n                      return left % right;\n                  }\n\n                  return null;\n\n                case 'if':\n                  var condition = simplify(expression['condition']);\n                  return condition ? simplify(expression['thenExpression']) : simplify(expression['elseExpression']);\n\n                case 'pre':\n                  var operand = simplify(expression['operand']);\n                  if (shouldIgnore(operand)) return operand;\n\n                  switch (expression['operator']) {\n                    case '+':\n                      return operand;\n\n                    case '-':\n                      return -operand;\n\n                    case '!':\n                      return !operand;\n\n                    case '~':\n                      return ~operand;\n                  }\n\n                  return null;\n\n                case 'index':\n                  var indexTarget = simplifyEagerly(expression['expression']);\n                  var index = simplifyEagerly(expression['index']);\n                  if (indexTarget && isPrimitive(index)) return indexTarget[index];\n                  return null;\n\n                case 'select':\n                  var member = expression['member'];\n                  var selectContext = context;\n                  var selectTarget = simplify(expression['expression']);\n\n                  if (selectTarget instanceof StaticSymbol) {\n                    var members = selectTarget.members.concat(member);\n                    selectContext = self.getStaticSymbol(selectTarget.filePath, selectTarget.name, members);\n\n                    var _declarationValue = resolveReferenceValue(selectContext);\n\n                    if (_declarationValue != null) {\n                      return simplifyNested(selectContext, _declarationValue);\n                    } else {\n                      return selectContext;\n                    }\n                  }\n\n                  if (selectTarget && isPrimitive(member)) return simplifyNested(selectContext, selectTarget[member]);\n                  return null;\n\n                case 'reference':\n                  // Note: This only has to deal with variable references, as symbol references have\n                  // been converted into 'resolved'\n                  // in the StaticSymbolResolver.\n                  var name = expression['name'];\n                  var localValue = scope.resolve(name);\n\n                  if (localValue != BindingScope$1.missing) {\n                    return localValue;\n                  }\n\n                  break;\n\n                case 'resolved':\n                  try {\n                    return simplify(expression.symbol);\n                  } catch (e) {\n                    // If an error is reported evaluating the symbol record the position of the\n                    // reference in the error so it can\n                    // be reported in the error message generated from the exception.\n                    if (isMetadataError(e) && expression.fileName != null && expression.line != null && expression.character != null) {\n                      e.position = {\n                        fileName: expression.fileName,\n                        line: expression.line,\n                        column: expression.character\n                      };\n                    }\n\n                    throw e;\n                  }\n\n                case 'class':\n                  return context;\n\n                case 'function':\n                  return context;\n\n                case 'new':\n                case 'call':\n                  // Determine if the function is a built-in conversion\n                  _staticSymbol = simplifyInContext(context, expression['expression'], depth + 1,\n                  /* references */\n                  0);\n\n                  if (_staticSymbol instanceof StaticSymbol) {\n                    if (_staticSymbol === self.injectionToken || _staticSymbol === self.opaqueToken) {\n                      // if somebody calls new InjectionToken, don't create an InjectionToken,\n                      // but rather return the symbol to which the InjectionToken is assigned to.\n                      // OpaqueToken is supported too as it is required by the language service to\n                      // support v4 and prior versions of Angular.\n                      return context;\n                    }\n\n                    var argExpressions = expression['arguments'] || [];\n                    var converter = self.conversionMap.get(_staticSymbol);\n\n                    if (converter) {\n                      var args = argExpressions.map(function (arg) {\n                        return simplifyNested(context, arg);\n                      }).map(function (arg) {\n                        return shouldIgnore(arg) ? undefined : arg;\n                      });\n                      return converter(context, args);\n                    } else {\n                      // Determine if the function is one we can simplify.\n                      var targetFunction = resolveReferenceValue(_staticSymbol);\n                      return simplifyCall(_staticSymbol, targetFunction, argExpressions, expression['expression']);\n                    }\n                  }\n\n                  return IGNORE;\n\n                case 'error':\n                  var message = expression.message;\n\n                  if (expression['line'] != null) {\n                    self.error({\n                      message: message,\n                      context: expression.context,\n                      value: expression,\n                      position: {\n                        fileName: expression['fileName'],\n                        line: expression['line'],\n                        column: expression['character']\n                      }\n                    }, context);\n                  } else {\n                    self.error({\n                      message: message,\n                      context: expression.context\n                    }, context);\n                  }\n\n                  return IGNORE;\n\n                case 'ignore':\n                  return expression;\n              }\n\n              return null;\n            }\n\n            return mapStringMap(expression, function (value, name) {\n              if (REFERENCE_SET.has(name)) {\n                if (name === USE_VALUE$1 && PROVIDE in expression) {\n                  // If this is a provider expression, check for special tokens that need the value\n                  // during analysis.\n                  var provide = simplify(expression.provide);\n\n                  if (provide === self.ROUTES || provide == self.ANALYZE_FOR_ENTRY_COMPONENTS) {\n                    return simplify(value);\n                  }\n                }\n\n                return simplifyLazily(value);\n              }\n\n              return simplify(value);\n            });\n          }\n\n          return IGNORE;\n        }\n\n        return simplify(value);\n      }\n\n      var result;\n\n      try {\n        result = simplifyInContext(context, value, 0, lazy ? 1 : 0);\n      } catch (e) {\n        if (this.errorRecorder) {\n          this.reportError(e, context);\n        } else {\n          throw formatMetadataError(e, context);\n        }\n      }\n\n      if (shouldIgnore(result)) {\n        return undefined;\n      }\n\n      return result;\n    }\n  }, {\n    key: \"getTypeMetadata\",\n    value: function getTypeMetadata(type) {\n      var resolvedSymbol = this.symbolResolver.resolveSymbol(type);\n      return resolvedSymbol && resolvedSymbol.metadata ? resolvedSymbol.metadata : {\n        __symbolic: 'class'\n      };\n    }\n  }, {\n    key: \"reportError\",\n    value: function reportError(error, context, path) {\n      if (this.errorRecorder) {\n        this.errorRecorder(formatMetadataError(error, context), context && context.filePath || path);\n      } else {\n        throw error;\n      }\n    }\n  }, {\n    key: \"error\",\n    value: function error(_ref53, reportingContext) {\n      var message = _ref53.message,\n          summary = _ref53.summary,\n          advise = _ref53.advise,\n          position = _ref53.position,\n          context = _ref53.context,\n          value = _ref53.value,\n          symbol = _ref53.symbol,\n          chain = _ref53.chain;\n      this.reportError(metadataError(message, summary, advise, position, symbol, context, chain), reportingContext);\n    }\n  }]);\n\n  return StaticReflector;\n}();\n\nvar METADATA_ERROR = 'ngMetadataError';\n\nfunction metadataError(message, summary, advise, position, symbol, context, chain) {\n  var error = syntaxError(message);\n  error[METADATA_ERROR] = true;\n  if (advise) error.advise = advise;\n  if (position) error.position = position;\n  if (summary) error.summary = summary;\n  if (context) error.context = context;\n  if (chain) error.chain = chain;\n  if (symbol) error.symbol = symbol;\n  return error;\n}\n\nfunction isMetadataError(error) {\n  return !!error[METADATA_ERROR];\n}\n\nvar REFERENCE_TO_NONEXPORTED_CLASS = 'Reference to non-exported class';\nvar VARIABLE_NOT_INITIALIZED = 'Variable not initialized';\nvar DESTRUCTURE_NOT_SUPPORTED = 'Destructuring not supported';\nvar COULD_NOT_RESOLVE_TYPE = 'Could not resolve type';\nvar FUNCTION_CALL_NOT_SUPPORTED = 'Function call not supported';\nvar REFERENCE_TO_LOCAL_SYMBOL = 'Reference to a local symbol';\nvar LAMBDA_NOT_SUPPORTED = 'Lambda not supported';\n\nfunction expandedMessage(message, context) {\n  switch (message) {\n    case REFERENCE_TO_NONEXPORTED_CLASS:\n      if (context && context.className) {\n        return \"References to a non-exported class are not supported in decorators but \".concat(context.className, \" was referenced.\");\n      }\n\n      break;\n\n    case VARIABLE_NOT_INITIALIZED:\n      return 'Only initialized variables and constants can be referenced in decorators because the value of this variable is needed by the template compiler';\n\n    case DESTRUCTURE_NOT_SUPPORTED:\n      return 'Referencing an exported destructured variable or constant is not supported in decorators and this value is needed by the template compiler';\n\n    case COULD_NOT_RESOLVE_TYPE:\n      if (context && context.typeName) {\n        return \"Could not resolve type \".concat(context.typeName);\n      }\n\n      break;\n\n    case FUNCTION_CALL_NOT_SUPPORTED:\n      if (context && context.name) {\n        return \"Function calls are not supported in decorators but '\".concat(context.name, \"' was called\");\n      }\n\n      return 'Function calls are not supported in decorators';\n\n    case REFERENCE_TO_LOCAL_SYMBOL:\n      if (context && context.name) {\n        return \"Reference to a local (non-exported) symbols are not supported in decorators but '\".concat(context.name, \"' was referenced\");\n      }\n\n      break;\n\n    case LAMBDA_NOT_SUPPORTED:\n      return \"Function expressions are not supported in decorators\";\n  }\n\n  return message;\n}\n\nfunction messageAdvise(message, context) {\n  switch (message) {\n    case REFERENCE_TO_NONEXPORTED_CLASS:\n      if (context && context.className) {\n        return \"Consider exporting '\".concat(context.className, \"'\");\n      }\n\n      break;\n\n    case DESTRUCTURE_NOT_SUPPORTED:\n      return 'Consider simplifying to avoid destructuring';\n\n    case REFERENCE_TO_LOCAL_SYMBOL:\n      if (context && context.name) {\n        return \"Consider exporting '\".concat(context.name, \"'\");\n      }\n\n      break;\n\n    case LAMBDA_NOT_SUPPORTED:\n      return \"Consider changing the function expression into an exported function\";\n  }\n\n  return undefined;\n}\n\nfunction errorSummary(error) {\n  if (error.summary) {\n    return error.summary;\n  }\n\n  switch (error.message) {\n    case REFERENCE_TO_NONEXPORTED_CLASS:\n      if (error.context && error.context.className) {\n        return \"references non-exported class \".concat(error.context.className);\n      }\n\n      break;\n\n    case VARIABLE_NOT_INITIALIZED:\n      return 'is not initialized';\n\n    case DESTRUCTURE_NOT_SUPPORTED:\n      return 'is a destructured variable';\n\n    case COULD_NOT_RESOLVE_TYPE:\n      return 'could not be resolved';\n\n    case FUNCTION_CALL_NOT_SUPPORTED:\n      if (error.context && error.context.name) {\n        return \"calls '\".concat(error.context.name, \"'\");\n      }\n\n      return \"calls a function\";\n\n    case REFERENCE_TO_LOCAL_SYMBOL:\n      if (error.context && error.context.name) {\n        return \"references local variable \".concat(error.context.name);\n      }\n\n      return \"references a local variable\";\n  }\n\n  return 'contains the error';\n}\n\nfunction mapStringMap(input, transform) {\n  if (!input) return {};\n  var result = {};\n  Object.keys(input).forEach(function (key) {\n    var value = transform(input[key], key);\n\n    if (!shouldIgnore(value)) {\n      if (HIDDEN_KEY.test(key)) {\n        Object.defineProperty(result, key, {\n          enumerable: false,\n          configurable: true,\n          value: value\n        });\n      } else {\n        result[key] = value;\n      }\n    }\n  });\n  return result;\n}\n\nfunction isPrimitive(o) {\n  return o === null || typeof o !== 'function' && _typeof(o) !== 'object';\n}\n\nvar BindingScope$1 = /*#__PURE__*/function () {\n  function BindingScope$1() {\n    _classCallCheck(this, BindingScope$1);\n  }\n\n  _createClass(BindingScope$1, null, [{\n    key: \"build\",\n    value: function build() {\n      var current = new Map();\n      return {\n        define: function define(name, value) {\n          current.set(name, value);\n          return this;\n        },\n        done: function done() {\n          return current.size > 0 ? new PopulatedScope(current) : BindingScope$1.empty;\n        }\n      };\n    }\n  }]);\n\n  return BindingScope$1;\n}();\n\nBindingScope$1.missing = {};\nBindingScope$1.empty = {\n  resolve: function resolve(name) {\n    return BindingScope$1.missing;\n  }\n};\n\nvar PopulatedScope = /*#__PURE__*/function (_BindingScope$) {\n  _inherits(PopulatedScope, _BindingScope$);\n\n  var _super109 = _createSuper(PopulatedScope);\n\n  function PopulatedScope(bindings) {\n    var _this286;\n\n    _classCallCheck(this, PopulatedScope);\n\n    _this286 = _super109.call(this);\n    _this286.bindings = bindings;\n    return _this286;\n  }\n\n  _createClass(PopulatedScope, [{\n    key: \"resolve\",\n    value: function resolve(name) {\n      return this.bindings.has(name) ? this.bindings.get(name) : BindingScope$1.missing;\n    }\n  }]);\n\n  return PopulatedScope;\n}(BindingScope$1);\n\nfunction formatMetadataMessageChain(chain, advise) {\n  var expanded = expandedMessage(chain.message, chain.context);\n  var nesting = chain.symbol ? \" in '\".concat(chain.symbol.name, \"'\") : '';\n  var message = \"\".concat(expanded).concat(nesting);\n  var position = chain.position;\n  var next = chain.next ? formatMetadataMessageChain(chain.next, advise) : advise ? {\n    message: advise\n  } : undefined;\n  return {\n    message: message,\n    position: position,\n    next: next ? [next] : undefined\n  };\n}\n\nfunction formatMetadataError(e, context) {\n  if (isMetadataError(e)) {\n    // Produce a formatted version of the and leaving enough information in the original error\n    // to recover the formatting information to eventually produce a diagnostic error message.\n    var position = e.position;\n    var chain = {\n      message: \"Error during template compile of '\".concat(context.name, \"'\"),\n      position: position,\n      next: {\n        message: e.message,\n        next: e.chain,\n        context: e.context,\n        symbol: e.symbol\n      }\n    };\n    var advise = e.advise || messageAdvise(e.message, e.context);\n    return formattedError(formatMetadataMessageChain(chain, advise));\n  }\n\n  return e;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar AotSummaryResolver = /*#__PURE__*/function () {\n  function AotSummaryResolver(host, staticSymbolCache) {\n    _classCallCheck(this, AotSummaryResolver);\n\n    this.host = host;\n    this.staticSymbolCache = staticSymbolCache; // Note: this will only contain StaticSymbols without members!\n\n    this.summaryCache = new Map();\n    this.loadedFilePaths = new Map(); // Note: this will only contain StaticSymbols without members!\n\n    this.importAs = new Map();\n    this.knownFileNameToModuleNames = new Map();\n  }\n\n  _createClass(AotSummaryResolver, [{\n    key: \"isLibraryFile\",\n    value: function isLibraryFile(filePath) {\n      // Note: We need to strip the .ngfactory. file path,\n      // so this method also works for generated files\n      // (for which host.isSourceFile will always return false).\n      return !this.host.isSourceFile(stripGeneratedFileSuffix(filePath));\n    }\n  }, {\n    key: \"toSummaryFileName\",\n    value: function toSummaryFileName(filePath, referringSrcFileName) {\n      return this.host.toSummaryFileName(filePath, referringSrcFileName);\n    }\n  }, {\n    key: \"fromSummaryFileName\",\n    value: function fromSummaryFileName(fileName, referringLibFileName) {\n      return this.host.fromSummaryFileName(fileName, referringLibFileName);\n    }\n  }, {\n    key: \"resolveSummary\",\n    value: function resolveSummary(staticSymbol) {\n      var rootSymbol = staticSymbol.members.length ? this.staticSymbolCache.get(staticSymbol.filePath, staticSymbol.name) : staticSymbol;\n      var summary = this.summaryCache.get(rootSymbol);\n\n      if (!summary) {\n        this._loadSummaryFile(staticSymbol.filePath);\n\n        summary = this.summaryCache.get(staticSymbol);\n      }\n\n      return rootSymbol === staticSymbol && summary || null;\n    }\n  }, {\n    key: \"getSymbolsOf\",\n    value: function getSymbolsOf(filePath) {\n      if (this._loadSummaryFile(filePath)) {\n        return Array.from(this.summaryCache.keys()).filter(function (symbol) {\n          return symbol.filePath === filePath;\n        });\n      }\n\n      return null;\n    }\n  }, {\n    key: \"getImportAs\",\n    value: function getImportAs(staticSymbol) {\n      staticSymbol.assertNoMembers();\n      return this.importAs.get(staticSymbol);\n    }\n    /**\n     * Converts a file path to a module name that can be used as an `import`.\n     */\n\n  }, {\n    key: \"getKnownModuleName\",\n    value: function getKnownModuleName(importedFilePath) {\n      return this.knownFileNameToModuleNames.get(importedFilePath) || null;\n    }\n  }, {\n    key: \"addSummary\",\n    value: function addSummary(summary) {\n      this.summaryCache.set(summary.symbol, summary);\n    }\n  }, {\n    key: \"_loadSummaryFile\",\n    value: function _loadSummaryFile(filePath) {\n      var _this287 = this;\n\n      var hasSummary = this.loadedFilePaths.get(filePath);\n\n      if (hasSummary != null) {\n        return hasSummary;\n      }\n\n      var json = null;\n\n      if (this.isLibraryFile(filePath)) {\n        var summaryFilePath = summaryFileName(filePath);\n\n        try {\n          json = this.host.loadSummary(summaryFilePath);\n        } catch (e) {\n          console.error(\"Error loading summary file \".concat(summaryFilePath));\n          throw e;\n        }\n      }\n\n      hasSummary = json != null;\n      this.loadedFilePaths.set(filePath, hasSummary);\n\n      if (json) {\n        var _deserializeSummaries = deserializeSummaries(this.staticSymbolCache, this, filePath, json),\n            moduleName = _deserializeSummaries.moduleName,\n            summaries = _deserializeSummaries.summaries,\n            importAs = _deserializeSummaries.importAs;\n\n        summaries.forEach(function (summary) {\n          return _this287.summaryCache.set(summary.symbol, summary);\n        });\n\n        if (moduleName) {\n          this.knownFileNameToModuleNames.set(filePath, moduleName);\n        }\n\n        importAs.forEach(function (importAs) {\n          _this287.importAs.set(importAs.symbol, importAs.importAs);\n        });\n      }\n\n      return hasSummary;\n    }\n  }]);\n\n  return AotSummaryResolver;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction createAotUrlResolver(host) {\n  return {\n    resolve: function resolve(basePath, url) {\n      var filePath = host.resourceNameToFileName(url, basePath);\n\n      if (!filePath) {\n        throw syntaxError(\"Couldn't resolve resource \".concat(url, \" from \").concat(basePath));\n      }\n\n      return filePath;\n    }\n  };\n}\n/**\n * Creates a new AotCompiler based on options and a host.\n */\n\n\nfunction createAotCompiler(compilerHost, options, errorCollector) {\n  var translations = options.translations || '';\n  var urlResolver = createAotUrlResolver(compilerHost);\n  var symbolCache = new StaticSymbolCache();\n  var summaryResolver = new AotSummaryResolver(compilerHost, symbolCache);\n  var symbolResolver = new StaticSymbolResolver(compilerHost, symbolCache, summaryResolver);\n  var staticReflector = new StaticReflector(summaryResolver, symbolResolver, [], [], errorCollector);\n  var htmlParser;\n\n  if (!!options.enableIvy) {\n    // Ivy handles i18n at the compiler level so we must use a regular parser\n    htmlParser = new HtmlParser();\n  } else {\n    htmlParser = new I18NHtmlParser(new HtmlParser(), translations, options.i18nFormat, options.missingTranslation, console);\n  }\n\n  var config = new CompilerConfig({\n    defaultEncapsulation: ViewEncapsulation.Emulated,\n    useJit: false,\n    missingTranslation: options.missingTranslation,\n    preserveWhitespaces: options.preserveWhitespaces,\n    strictInjectionParameters: options.strictInjectionParameters\n  });\n  var normalizer = new DirectiveNormalizer({\n    get: function get(url) {\n      return compilerHost.loadResource(url);\n    }\n  }, urlResolver, htmlParser, config);\n  var expressionParser = new Parser$1(new Lexer());\n  var elementSchemaRegistry = new DomElementSchemaRegistry();\n  var tmplParser = new TemplateParser(config, staticReflector, expressionParser, elementSchemaRegistry, htmlParser, console, []);\n  var resolver = new CompileMetadataResolver(config, htmlParser, new NgModuleResolver(staticReflector), new DirectiveResolver(staticReflector), new PipeResolver(staticReflector), summaryResolver, elementSchemaRegistry, normalizer, console, symbolCache, staticReflector, errorCollector); // TODO(vicb): do not pass options.i18nFormat here\n\n  var viewCompiler = new ViewCompiler(staticReflector);\n  var typeCheckCompiler = new TypeCheckCompiler(options, staticReflector);\n  var compiler = new AotCompiler(config, options, compilerHost, staticReflector, resolver, tmplParser, new StyleCompiler(urlResolver), viewCompiler, typeCheckCompiler, new NgModuleCompiler(staticReflector), new InjectableCompiler(staticReflector, !!options.enableIvy), new TypeScriptEmitter(), summaryResolver, symbolResolver);\n  return {\n    compiler: compiler,\n    reflector: staticReflector\n  };\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar SummaryResolver = /*#__PURE__*/_createClass(function SummaryResolver() {\n  _classCallCheck(this, SummaryResolver);\n});\n\nvar JitSummaryResolver = /*#__PURE__*/function () {\n  function JitSummaryResolver() {\n    _classCallCheck(this, JitSummaryResolver);\n\n    this._summaries = new Map();\n  }\n\n  _createClass(JitSummaryResolver, [{\n    key: \"isLibraryFile\",\n    value: function isLibraryFile() {\n      return false;\n    }\n  }, {\n    key: \"toSummaryFileName\",\n    value: function toSummaryFileName(fileName) {\n      return fileName;\n    }\n  }, {\n    key: \"fromSummaryFileName\",\n    value: function fromSummaryFileName(fileName) {\n      return fileName;\n    }\n  }, {\n    key: \"resolveSummary\",\n    value: function resolveSummary(reference) {\n      return this._summaries.get(reference) || null;\n    }\n  }, {\n    key: \"getSymbolsOf\",\n    value: function getSymbolsOf() {\n      return [];\n    }\n  }, {\n    key: \"getImportAs\",\n    value: function getImportAs(reference) {\n      return reference;\n    }\n  }, {\n    key: \"getKnownModuleName\",\n    value: function getKnownModuleName(fileName) {\n      return null;\n    }\n  }, {\n    key: \"addSummary\",\n    value: function addSummary(summary) {\n      this._summaries.set(summary.symbol, summary);\n    }\n  }]);\n\n  return JitSummaryResolver;\n}();\n\nfunction interpretStatements(statements, reflector) {\n  var ctx = new _ExecutionContext(null, null, null, new Map());\n  var visitor = new StatementInterpreter(reflector);\n  visitor.visitAllStatements(statements, ctx);\n  var result = {};\n  ctx.exports.forEach(function (exportName) {\n    result[exportName] = ctx.vars.get(exportName);\n  });\n  return result;\n}\n\nfunction _executeFunctionStatements(varNames, varValues, statements, ctx, visitor) {\n  var childCtx = ctx.createChildWihtLocalVars();\n\n  for (var i = 0; i < varNames.length; i++) {\n    childCtx.vars.set(varNames[i], varValues[i]);\n  }\n\n  var result = visitor.visitAllStatements(statements, childCtx);\n  return result ? result.value : null;\n}\n\nvar _ExecutionContext = /*#__PURE__*/function () {\n  function _ExecutionContext(parent, instance, className, vars) {\n    _classCallCheck(this, _ExecutionContext);\n\n    this.parent = parent;\n    this.instance = instance;\n    this.className = className;\n    this.vars = vars;\n    this.exports = [];\n  }\n\n  _createClass(_ExecutionContext, [{\n    key: \"createChildWihtLocalVars\",\n    value: function createChildWihtLocalVars() {\n      return new _ExecutionContext(this, this.instance, this.className, new Map());\n    }\n  }]);\n\n  return _ExecutionContext;\n}();\n\nvar ReturnValue = /*#__PURE__*/_createClass(function ReturnValue(value) {\n  _classCallCheck(this, ReturnValue);\n\n  this.value = value;\n});\n\nfunction createDynamicClass(_classStmt, _ctx, _visitor) {\n  var propertyDescriptors = {};\n\n  _classStmt.getters.forEach(function (getter) {\n    // Note: use `function` instead of arrow function to capture `this`\n    propertyDescriptors[getter.name] = {\n      configurable: false,\n      get: function get() {\n        var instanceCtx = new _ExecutionContext(_ctx, this, _classStmt.name, _ctx.vars);\n        return _executeFunctionStatements([], [], getter.body, instanceCtx, _visitor);\n      }\n    };\n  });\n\n  _classStmt.methods.forEach(function (method) {\n    var paramNames = method.params.map(function (param) {\n      return param.name;\n    }); // Note: use `function` instead of arrow function to capture `this`\n\n    propertyDescriptors[method.name] = {\n      writable: false,\n      configurable: false,\n      value: function value() {\n        var instanceCtx = new _ExecutionContext(_ctx, this, _classStmt.name, _ctx.vars);\n\n        for (var _len5 = arguments.length, args = new Array(_len5), _key6 = 0; _key6 < _len5; _key6++) {\n          args[_key6] = arguments[_key6];\n        }\n\n        return _executeFunctionStatements(paramNames, args, method.body, instanceCtx, _visitor);\n      }\n    };\n  });\n\n  var ctorParamNames = _classStmt.constructorMethod.params.map(function (param) {\n    return param.name;\n  }); // Note: use `function` instead of arrow function to capture `this`\n\n\n  var ctor = function ctor() {\n    var _this288 = this;\n\n    var instanceCtx = new _ExecutionContext(_ctx, this, _classStmt.name, _ctx.vars);\n\n    _classStmt.fields.forEach(function (field) {\n      _this288[field.name] = undefined;\n    });\n\n    for (var _len6 = arguments.length, args = new Array(_len6), _key7 = 0; _key7 < _len6; _key7++) {\n      args[_key7] = arguments[_key7];\n    }\n\n    _executeFunctionStatements(ctorParamNames, args, _classStmt.constructorMethod.body, instanceCtx, _visitor);\n  };\n\n  var superClass = _classStmt.parent ? _classStmt.parent.visitExpression(_visitor, _ctx) : Object;\n  ctor.prototype = Object.create(superClass.prototype, propertyDescriptors);\n  return ctor;\n}\n\nvar StatementInterpreter = /*#__PURE__*/function () {\n  function StatementInterpreter(reflector) {\n    _classCallCheck(this, StatementInterpreter);\n\n    this.reflector = reflector;\n  }\n\n  _createClass(StatementInterpreter, [{\n    key: \"debugAst\",\n    value: function debugAst(ast) {\n      return debugOutputAstAsTypeScript(ast);\n    }\n  }, {\n    key: \"visitDeclareVarStmt\",\n    value: function visitDeclareVarStmt(stmt, ctx) {\n      var initialValue = stmt.value ? stmt.value.visitExpression(this, ctx) : undefined;\n      ctx.vars.set(stmt.name, initialValue);\n\n      if (stmt.hasModifier(StmtModifier.Exported)) {\n        ctx.exports.push(stmt.name);\n      }\n\n      return null;\n    }\n  }, {\n    key: \"visitWriteVarExpr\",\n    value: function visitWriteVarExpr(expr, ctx) {\n      var value = expr.value.visitExpression(this, ctx);\n      var currCtx = ctx;\n\n      while (currCtx != null) {\n        if (currCtx.vars.has(expr.name)) {\n          currCtx.vars.set(expr.name, value);\n          return value;\n        }\n\n        currCtx = currCtx.parent;\n      }\n\n      throw new Error(\"Not declared variable \".concat(expr.name));\n    }\n  }, {\n    key: \"visitWrappedNodeExpr\",\n    value: function visitWrappedNodeExpr(ast, ctx) {\n      throw new Error('Cannot interpret a WrappedNodeExpr.');\n    }\n  }, {\n    key: \"visitTypeofExpr\",\n    value: function visitTypeofExpr(ast, ctx) {\n      throw new Error('Cannot interpret a TypeofExpr');\n    }\n  }, {\n    key: \"visitReadVarExpr\",\n    value: function visitReadVarExpr(ast, ctx) {\n      var varName = ast.name;\n\n      if (ast.builtin != null) {\n        switch (ast.builtin) {\n          case BuiltinVar.Super:\n            return Object.getPrototypeOf(ctx.instance);\n\n          case BuiltinVar.This:\n            return ctx.instance;\n\n          case BuiltinVar.CatchError:\n            varName = CATCH_ERROR_VAR$2;\n            break;\n\n          case BuiltinVar.CatchStack:\n            varName = CATCH_STACK_VAR$2;\n            break;\n\n          default:\n            throw new Error(\"Unknown builtin variable \".concat(ast.builtin));\n        }\n      }\n\n      var currCtx = ctx;\n\n      while (currCtx != null) {\n        if (currCtx.vars.has(varName)) {\n          return currCtx.vars.get(varName);\n        }\n\n        currCtx = currCtx.parent;\n      }\n\n      throw new Error(\"Not declared variable \".concat(varName));\n    }\n  }, {\n    key: \"visitWriteKeyExpr\",\n    value: function visitWriteKeyExpr(expr, ctx) {\n      var receiver = expr.receiver.visitExpression(this, ctx);\n      var index = expr.index.visitExpression(this, ctx);\n      var value = expr.value.visitExpression(this, ctx);\n      receiver[index] = value;\n      return value;\n    }\n  }, {\n    key: \"visitWritePropExpr\",\n    value: function visitWritePropExpr(expr, ctx) {\n      var receiver = expr.receiver.visitExpression(this, ctx);\n      var value = expr.value.visitExpression(this, ctx);\n      receiver[expr.name] = value;\n      return value;\n    }\n  }, {\n    key: \"visitInvokeMethodExpr\",\n    value: function visitInvokeMethodExpr(expr, ctx) {\n      var receiver = expr.receiver.visitExpression(this, ctx);\n      var args = this.visitAllExpressions(expr.args, ctx);\n      var result;\n\n      if (expr.builtin != null) {\n        switch (expr.builtin) {\n          case BuiltinMethod.ConcatArray:\n            result = receiver.concat.apply(receiver, _toConsumableArray(args));\n            break;\n\n          case BuiltinMethod.SubscribeObservable:\n            result = receiver.subscribe({\n              next: args[0]\n            });\n            break;\n\n          case BuiltinMethod.Bind:\n            result = receiver.bind.apply(receiver, _toConsumableArray(args));\n            break;\n\n          default:\n            throw new Error(\"Unknown builtin method \".concat(expr.builtin));\n        }\n      } else {\n        result = receiver[expr.name].apply(receiver, args);\n      }\n\n      return result;\n    }\n  }, {\n    key: \"visitInvokeFunctionExpr\",\n    value: function visitInvokeFunctionExpr(stmt, ctx) {\n      var args = this.visitAllExpressions(stmt.args, ctx);\n      var fnExpr = stmt.fn;\n\n      if (fnExpr instanceof ReadVarExpr && fnExpr.builtin === BuiltinVar.Super) {\n        ctx.instance.constructor.prototype.constructor.apply(ctx.instance, args);\n        return null;\n      } else {\n        var _fn = stmt.fn.visitExpression(this, ctx);\n\n        return _fn.apply(null, args);\n      }\n    }\n  }, {\n    key: \"visitReturnStmt\",\n    value: function visitReturnStmt(stmt, ctx) {\n      return new ReturnValue(stmt.value.visitExpression(this, ctx));\n    }\n  }, {\n    key: \"visitDeclareClassStmt\",\n    value: function visitDeclareClassStmt(stmt, ctx) {\n      var clazz = createDynamicClass(stmt, ctx, this);\n      ctx.vars.set(stmt.name, clazz);\n\n      if (stmt.hasModifier(StmtModifier.Exported)) {\n        ctx.exports.push(stmt.name);\n      }\n\n      return null;\n    }\n  }, {\n    key: \"visitExpressionStmt\",\n    value: function visitExpressionStmt(stmt, ctx) {\n      return stmt.expr.visitExpression(this, ctx);\n    }\n  }, {\n    key: \"visitIfStmt\",\n    value: function visitIfStmt(stmt, ctx) {\n      var condition = stmt.condition.visitExpression(this, ctx);\n\n      if (condition) {\n        return this.visitAllStatements(stmt.trueCase, ctx);\n      } else if (stmt.falseCase != null) {\n        return this.visitAllStatements(stmt.falseCase, ctx);\n      }\n\n      return null;\n    }\n  }, {\n    key: \"visitTryCatchStmt\",\n    value: function visitTryCatchStmt(stmt, ctx) {\n      try {\n        return this.visitAllStatements(stmt.bodyStmts, ctx);\n      } catch (e) {\n        var childCtx = ctx.createChildWihtLocalVars();\n        childCtx.vars.set(CATCH_ERROR_VAR$2, e);\n        childCtx.vars.set(CATCH_STACK_VAR$2, e.stack);\n        return this.visitAllStatements(stmt.catchStmts, childCtx);\n      }\n    }\n  }, {\n    key: \"visitThrowStmt\",\n    value: function visitThrowStmt(stmt, ctx) {\n      throw stmt.error.visitExpression(this, ctx);\n    }\n  }, {\n    key: \"visitInstantiateExpr\",\n    value: function visitInstantiateExpr(ast, ctx) {\n      var args = this.visitAllExpressions(ast.args, ctx);\n      var clazz = ast.classExpr.visitExpression(this, ctx);\n      return _construct(clazz, _toConsumableArray(args));\n    }\n  }, {\n    key: \"visitLiteralExpr\",\n    value: function visitLiteralExpr(ast, ctx) {\n      return ast.value;\n    }\n  }, {\n    key: \"visitLocalizedString\",\n    value: function visitLocalizedString(ast, context) {\n      return null;\n    }\n  }, {\n    key: \"visitExternalExpr\",\n    value: function visitExternalExpr(ast, ctx) {\n      return this.reflector.resolveExternalReference(ast.value);\n    }\n  }, {\n    key: \"visitConditionalExpr\",\n    value: function visitConditionalExpr(ast, ctx) {\n      if (ast.condition.visitExpression(this, ctx)) {\n        return ast.trueCase.visitExpression(this, ctx);\n      } else if (ast.falseCase != null) {\n        return ast.falseCase.visitExpression(this, ctx);\n      }\n\n      return null;\n    }\n  }, {\n    key: \"visitNotExpr\",\n    value: function visitNotExpr(ast, ctx) {\n      return !ast.condition.visitExpression(this, ctx);\n    }\n  }, {\n    key: \"visitAssertNotNullExpr\",\n    value: function visitAssertNotNullExpr(ast, ctx) {\n      return ast.condition.visitExpression(this, ctx);\n    }\n  }, {\n    key: \"visitCastExpr\",\n    value: function visitCastExpr(ast, ctx) {\n      return ast.value.visitExpression(this, ctx);\n    }\n  }, {\n    key: \"visitFunctionExpr\",\n    value: function visitFunctionExpr(ast, ctx) {\n      var paramNames = ast.params.map(function (param) {\n        return param.name;\n      });\n      return _declareFn(paramNames, ast.statements, ctx, this);\n    }\n  }, {\n    key: \"visitDeclareFunctionStmt\",\n    value: function visitDeclareFunctionStmt(stmt, ctx) {\n      var paramNames = stmt.params.map(function (param) {\n        return param.name;\n      });\n      ctx.vars.set(stmt.name, _declareFn(paramNames, stmt.statements, ctx, this));\n\n      if (stmt.hasModifier(StmtModifier.Exported)) {\n        ctx.exports.push(stmt.name);\n      }\n\n      return null;\n    }\n  }, {\n    key: \"visitUnaryOperatorExpr\",\n    value: function visitUnaryOperatorExpr(ast, ctx) {\n      var _this289 = this;\n\n      var rhs = function rhs() {\n        return ast.expr.visitExpression(_this289, ctx);\n      };\n\n      switch (ast.operator) {\n        case UnaryOperator.Plus:\n          return +rhs();\n\n        case UnaryOperator.Minus:\n          return -rhs();\n\n        default:\n          throw new Error(\"Unknown operator \".concat(ast.operator));\n      }\n    }\n  }, {\n    key: \"visitBinaryOperatorExpr\",\n    value: function visitBinaryOperatorExpr(ast, ctx) {\n      var _this290 = this;\n\n      var lhs = function lhs() {\n        return ast.lhs.visitExpression(_this290, ctx);\n      };\n\n      var rhs = function rhs() {\n        return ast.rhs.visitExpression(_this290, ctx);\n      };\n\n      switch (ast.operator) {\n        case BinaryOperator.Equals:\n          return lhs() == rhs();\n\n        case BinaryOperator.Identical:\n          return lhs() === rhs();\n\n        case BinaryOperator.NotEquals:\n          return lhs() != rhs();\n\n        case BinaryOperator.NotIdentical:\n          return lhs() !== rhs();\n\n        case BinaryOperator.And:\n          return lhs() && rhs();\n\n        case BinaryOperator.Or:\n          return lhs() || rhs();\n\n        case BinaryOperator.Plus:\n          return lhs() + rhs();\n\n        case BinaryOperator.Minus:\n          return lhs() - rhs();\n\n        case BinaryOperator.Divide:\n          return lhs() / rhs();\n\n        case BinaryOperator.Multiply:\n          return lhs() * rhs();\n\n        case BinaryOperator.Modulo:\n          return lhs() % rhs();\n\n        case BinaryOperator.Lower:\n          return lhs() < rhs();\n\n        case BinaryOperator.LowerEquals:\n          return lhs() <= rhs();\n\n        case BinaryOperator.Bigger:\n          return lhs() > rhs();\n\n        case BinaryOperator.BiggerEquals:\n          return lhs() >= rhs();\n\n        default:\n          throw new Error(\"Unknown operator \".concat(ast.operator));\n      }\n    }\n  }, {\n    key: \"visitReadPropExpr\",\n    value: function visitReadPropExpr(ast, ctx) {\n      var result;\n      var receiver = ast.receiver.visitExpression(this, ctx);\n      result = receiver[ast.name];\n      return result;\n    }\n  }, {\n    key: \"visitReadKeyExpr\",\n    value: function visitReadKeyExpr(ast, ctx) {\n      var receiver = ast.receiver.visitExpression(this, ctx);\n      var prop = ast.index.visitExpression(this, ctx);\n      return receiver[prop];\n    }\n  }, {\n    key: \"visitLiteralArrayExpr\",\n    value: function visitLiteralArrayExpr(ast, ctx) {\n      return this.visitAllExpressions(ast.entries, ctx);\n    }\n  }, {\n    key: \"visitLiteralMapExpr\",\n    value: function visitLiteralMapExpr(ast, ctx) {\n      var _this291 = this;\n\n      var result = {};\n      ast.entries.forEach(function (entry) {\n        return result[entry.key] = entry.value.visitExpression(_this291, ctx);\n      });\n      return result;\n    }\n  }, {\n    key: \"visitCommaExpr\",\n    value: function visitCommaExpr(ast, context) {\n      var values = this.visitAllExpressions(ast.parts, context);\n      return values[values.length - 1];\n    }\n  }, {\n    key: \"visitAllExpressions\",\n    value: function visitAllExpressions(expressions, ctx) {\n      var _this292 = this;\n\n      return expressions.map(function (expr) {\n        return expr.visitExpression(_this292, ctx);\n      });\n    }\n  }, {\n    key: \"visitAllStatements\",\n    value: function visitAllStatements(statements, ctx) {\n      for (var i = 0; i < statements.length; i++) {\n        var stmt = statements[i];\n        var val = stmt.visitStatement(this, ctx);\n\n        if (val instanceof ReturnValue) {\n          return val;\n        }\n      }\n\n      return null;\n    }\n  }]);\n\n  return StatementInterpreter;\n}();\n\nfunction _declareFn(varNames, statements, ctx, visitor) {\n  return function () {\n    for (var _len7 = arguments.length, args = new Array(_len7), _key8 = 0; _key8 < _len7; _key8++) {\n      args[_key8] = arguments[_key8];\n    }\n\n    return _executeFunctionStatements(varNames, args, statements, ctx, visitor);\n  };\n}\n\nvar CATCH_ERROR_VAR$2 = 'error';\nvar CATCH_STACK_VAR$2 = 'stack';\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * An internal module of the Angular compiler that begins with component types,\n * extracts templates, and eventually produces a compiled version of the component\n * ready for linking into an application.\n *\n * @security  When compiling templates at runtime, you must ensure that the entire template comes\n * from a trusted source. Attacker-controlled data introduced by a template could expose your\n * application to XSS risks.  For more detail, see the [Security Guide](http://g.co/ng/security).\n */\n\nvar JitCompiler = /*#__PURE__*/function () {\n  function JitCompiler(_metadataResolver, _templateParser, _styleCompiler, _viewCompiler, _ngModuleCompiler, _summaryResolver, _reflector, _jitEvaluator, _compilerConfig, _console, getExtraNgModuleProviders) {\n    _classCallCheck(this, JitCompiler);\n\n    this._metadataResolver = _metadataResolver;\n    this._templateParser = _templateParser;\n    this._styleCompiler = _styleCompiler;\n    this._viewCompiler = _viewCompiler;\n    this._ngModuleCompiler = _ngModuleCompiler;\n    this._summaryResolver = _summaryResolver;\n    this._reflector = _reflector;\n    this._jitEvaluator = _jitEvaluator;\n    this._compilerConfig = _compilerConfig;\n    this._console = _console;\n    this.getExtraNgModuleProviders = getExtraNgModuleProviders;\n    this._compiledTemplateCache = new Map();\n    this._compiledHostTemplateCache = new Map();\n    this._compiledDirectiveWrapperCache = new Map();\n    this._compiledNgModuleCache = new Map();\n    this._sharedStylesheetCount = 0;\n    this._addedAotSummaries = new Set();\n  }\n\n  _createClass(JitCompiler, [{\n    key: \"compileModuleSync\",\n    value: function compileModuleSync(moduleType) {\n      return SyncAsync.assertSync(this._compileModuleAndComponents(moduleType, true));\n    }\n  }, {\n    key: \"compileModuleAsync\",\n    value: function compileModuleAsync(moduleType) {\n      return Promise.resolve(this._compileModuleAndComponents(moduleType, false));\n    }\n  }, {\n    key: \"compileModuleAndAllComponentsSync\",\n    value: function compileModuleAndAllComponentsSync(moduleType) {\n      return SyncAsync.assertSync(this._compileModuleAndAllComponents(moduleType, true));\n    }\n  }, {\n    key: \"compileModuleAndAllComponentsAsync\",\n    value: function compileModuleAndAllComponentsAsync(moduleType) {\n      return Promise.resolve(this._compileModuleAndAllComponents(moduleType, false));\n    }\n  }, {\n    key: \"getComponentFactory\",\n    value: function getComponentFactory(component) {\n      var summary = this._metadataResolver.getDirectiveSummary(component);\n\n      return summary.componentFactory;\n    }\n  }, {\n    key: \"loadAotSummaries\",\n    value: function loadAotSummaries(summaries) {\n      this.clearCache();\n\n      this._addAotSummaries(summaries);\n    }\n  }, {\n    key: \"_addAotSummaries\",\n    value: function _addAotSummaries(fn) {\n      if (this._addedAotSummaries.has(fn)) {\n        return;\n      }\n\n      this._addedAotSummaries.add(fn);\n\n      var summaries = fn();\n\n      for (var i = 0; i < summaries.length; i++) {\n        var entry = summaries[i];\n\n        if (typeof entry === 'function') {\n          this._addAotSummaries(entry);\n        } else {\n          var summary = entry;\n\n          this._summaryResolver.addSummary({\n            symbol: summary.type.reference,\n            metadata: null,\n            type: summary\n          });\n        }\n      }\n    }\n  }, {\n    key: \"hasAotSummary\",\n    value: function hasAotSummary(ref) {\n      return !!this._summaryResolver.resolveSummary(ref);\n    }\n  }, {\n    key: \"_filterJitIdentifiers\",\n    value: function _filterJitIdentifiers(ids) {\n      var _this293 = this;\n\n      return ids.map(function (mod) {\n        return mod.reference;\n      }).filter(function (ref) {\n        return !_this293.hasAotSummary(ref);\n      });\n    }\n  }, {\n    key: \"_compileModuleAndComponents\",\n    value: function _compileModuleAndComponents(moduleType, isSync) {\n      var _this294 = this;\n\n      return SyncAsync.then(this._loadModules(moduleType, isSync), function () {\n        _this294._compileComponents(moduleType, null);\n\n        return _this294._compileModule(moduleType);\n      });\n    }\n  }, {\n    key: \"_compileModuleAndAllComponents\",\n    value: function _compileModuleAndAllComponents(moduleType, isSync) {\n      var _this295 = this;\n\n      return SyncAsync.then(this._loadModules(moduleType, isSync), function () {\n        var componentFactories = [];\n\n        _this295._compileComponents(moduleType, componentFactories);\n\n        return {\n          ngModuleFactory: _this295._compileModule(moduleType),\n          componentFactories: componentFactories\n        };\n      });\n    }\n  }, {\n    key: \"_loadModules\",\n    value: function _loadModules(mainModule, isSync) {\n      var _this296 = this;\n\n      var loading = [];\n\n      var mainNgModule = this._metadataResolver.getNgModuleMetadata(mainModule); // Note: for runtime compilation, we want to transitively compile all modules,\n      // so we also need to load the declared directives / pipes for all nested modules.\n\n\n      this._filterJitIdentifiers(mainNgModule.transitiveModule.modules).forEach(function (nestedNgModule) {\n        // getNgModuleMetadata only returns null if the value passed in is not an NgModule\n        var moduleMeta = _this296._metadataResolver.getNgModuleMetadata(nestedNgModule);\n\n        _this296._filterJitIdentifiers(moduleMeta.declaredDirectives).forEach(function (ref) {\n          var promise = _this296._metadataResolver.loadDirectiveMetadata(moduleMeta.type.reference, ref, isSync);\n\n          if (promise) {\n            loading.push(promise);\n          }\n        });\n\n        _this296._filterJitIdentifiers(moduleMeta.declaredPipes).forEach(function (ref) {\n          return _this296._metadataResolver.getOrLoadPipeMetadata(ref);\n        });\n      });\n\n      return SyncAsync.all(loading);\n    }\n  }, {\n    key: \"_compileModule\",\n    value: function _compileModule(moduleType) {\n      var ngModuleFactory = this._compiledNgModuleCache.get(moduleType);\n\n      if (!ngModuleFactory) {\n        var moduleMeta = this._metadataResolver.getNgModuleMetadata(moduleType); // Always provide a bound Compiler\n\n\n        var extraProviders = this.getExtraNgModuleProviders(moduleMeta.type.reference);\n        var outputCtx = createOutputContext();\n\n        var compileResult = this._ngModuleCompiler.compile(outputCtx, moduleMeta, extraProviders);\n\n        ngModuleFactory = this._interpretOrJit(ngModuleJitUrl(moduleMeta), outputCtx.statements)[compileResult.ngModuleFactoryVar];\n\n        this._compiledNgModuleCache.set(moduleMeta.type.reference, ngModuleFactory);\n      }\n\n      return ngModuleFactory;\n    }\n    /**\n     * @internal\n     */\n\n  }, {\n    key: \"_compileComponents\",\n    value: function _compileComponents(mainModule, allComponentFactories) {\n      var _this297 = this;\n\n      var ngModule = this._metadataResolver.getNgModuleMetadata(mainModule);\n\n      var moduleByJitDirective = new Map();\n      var templates = new Set();\n\n      var transJitModules = this._filterJitIdentifiers(ngModule.transitiveModule.modules);\n\n      transJitModules.forEach(function (localMod) {\n        var localModuleMeta = _this297._metadataResolver.getNgModuleMetadata(localMod);\n\n        _this297._filterJitIdentifiers(localModuleMeta.declaredDirectives).forEach(function (dirRef) {\n          moduleByJitDirective.set(dirRef, localModuleMeta);\n\n          var dirMeta = _this297._metadataResolver.getDirectiveMetadata(dirRef);\n\n          if (dirMeta.isComponent) {\n            templates.add(_this297._createCompiledTemplate(dirMeta, localModuleMeta));\n\n            if (allComponentFactories) {\n              var template = _this297._createCompiledHostTemplate(dirMeta.type.reference, localModuleMeta);\n\n              templates.add(template);\n              allComponentFactories.push(dirMeta.componentFactory);\n            }\n          }\n        });\n      });\n      transJitModules.forEach(function (localMod) {\n        var localModuleMeta = _this297._metadataResolver.getNgModuleMetadata(localMod);\n\n        _this297._filterJitIdentifiers(localModuleMeta.declaredDirectives).forEach(function (dirRef) {\n          var dirMeta = _this297._metadataResolver.getDirectiveMetadata(dirRef);\n\n          if (dirMeta.isComponent) {\n            dirMeta.entryComponents.forEach(function (entryComponentType) {\n              var moduleMeta = moduleByJitDirective.get(entryComponentType.componentType);\n              templates.add(_this297._createCompiledHostTemplate(entryComponentType.componentType, moduleMeta));\n            });\n          }\n        });\n\n        localModuleMeta.entryComponents.forEach(function (entryComponentType) {\n          if (!_this297.hasAotSummary(entryComponentType.componentType)) {\n            var moduleMeta = moduleByJitDirective.get(entryComponentType.componentType);\n            templates.add(_this297._createCompiledHostTemplate(entryComponentType.componentType, moduleMeta));\n          }\n        });\n      });\n      templates.forEach(function (template) {\n        return _this297._compileTemplate(template);\n      });\n    }\n  }, {\n    key: \"clearCacheFor\",\n    value: function clearCacheFor(type) {\n      this._compiledNgModuleCache.delete(type);\n\n      this._metadataResolver.clearCacheFor(type);\n\n      this._compiledHostTemplateCache.delete(type);\n\n      var compiledTemplate = this._compiledTemplateCache.get(type);\n\n      if (compiledTemplate) {\n        this._compiledTemplateCache.delete(type);\n      }\n    }\n  }, {\n    key: \"clearCache\",\n    value: function clearCache() {\n      // Note: don't clear the _addedAotSummaries, as they don't change!\n      this._metadataResolver.clearCache();\n\n      this._compiledTemplateCache.clear();\n\n      this._compiledHostTemplateCache.clear();\n\n      this._compiledNgModuleCache.clear();\n    }\n  }, {\n    key: \"_createCompiledHostTemplate\",\n    value: function _createCompiledHostTemplate(compType, ngModule) {\n      if (!ngModule) {\n        throw new Error(\"Component \".concat(stringify(compType), \" is not part of any NgModule or the module has not been imported into your module.\"));\n      }\n\n      var compiledTemplate = this._compiledHostTemplateCache.get(compType);\n\n      if (!compiledTemplate) {\n        var compMeta = this._metadataResolver.getDirectiveMetadata(compType);\n\n        assertComponent(compMeta);\n\n        var hostMeta = this._metadataResolver.getHostComponentMetadata(compMeta, compMeta.componentFactory.viewDefFactory);\n\n        compiledTemplate = new CompiledTemplate(true, compMeta.type, hostMeta, ngModule, [compMeta.type]);\n\n        this._compiledHostTemplateCache.set(compType, compiledTemplate);\n      }\n\n      return compiledTemplate;\n    }\n  }, {\n    key: \"_createCompiledTemplate\",\n    value: function _createCompiledTemplate(compMeta, ngModule) {\n      var compiledTemplate = this._compiledTemplateCache.get(compMeta.type.reference);\n\n      if (!compiledTemplate) {\n        assertComponent(compMeta);\n        compiledTemplate = new CompiledTemplate(false, compMeta.type, compMeta, ngModule, ngModule.transitiveModule.directives);\n\n        this._compiledTemplateCache.set(compMeta.type.reference, compiledTemplate);\n      }\n\n      return compiledTemplate;\n    }\n  }, {\n    key: \"_compileTemplate\",\n    value: function _compileTemplate(template) {\n      var _this298 = this;\n\n      if (template.isCompiled) {\n        return;\n      }\n\n      var compMeta = template.compMeta;\n      var externalStylesheetsByModuleUrl = new Map();\n      var outputContext = createOutputContext();\n\n      var componentStylesheet = this._styleCompiler.compileComponent(outputContext, compMeta);\n\n      compMeta.template.externalStylesheets.forEach(function (stylesheetMeta) {\n        var compiledStylesheet = _this298._styleCompiler.compileStyles(createOutputContext(), compMeta, stylesheetMeta);\n\n        externalStylesheetsByModuleUrl.set(stylesheetMeta.moduleUrl, compiledStylesheet);\n      });\n\n      this._resolveStylesCompileResult(componentStylesheet, externalStylesheetsByModuleUrl);\n\n      var pipes = template.ngModule.transitiveModule.pipes.map(function (pipe) {\n        return _this298._metadataResolver.getPipeSummary(pipe.reference);\n      });\n\n      var _this$_parseTemplate3 = this._parseTemplate(compMeta, template.ngModule, template.directives),\n          parsedTemplate = _this$_parseTemplate3.template,\n          usedPipes = _this$_parseTemplate3.pipes;\n\n      var compileResult = this._viewCompiler.compileComponent(outputContext, compMeta, parsedTemplate, variable(componentStylesheet.stylesVar), usedPipes);\n\n      var evalResult = this._interpretOrJit(templateJitUrl(template.ngModule.type, template.compMeta), outputContext.statements);\n\n      var viewClass = evalResult[compileResult.viewClassVar];\n      var rendererType = evalResult[compileResult.rendererTypeVar];\n      template.compiled(viewClass, rendererType);\n    }\n  }, {\n    key: \"_parseTemplate\",\n    value: function _parseTemplate(compMeta, ngModule, directiveIdentifiers) {\n      var _this299 = this;\n\n      // Note: ! is ok here as components always have a template.\n      var preserveWhitespaces = compMeta.template.preserveWhitespaces;\n      var directives = directiveIdentifiers.map(function (dir) {\n        return _this299._metadataResolver.getDirectiveSummary(dir.reference);\n      });\n      var pipes = ngModule.transitiveModule.pipes.map(function (pipe) {\n        return _this299._metadataResolver.getPipeSummary(pipe.reference);\n      });\n      return this._templateParser.parse(compMeta, compMeta.template.htmlAst, directives, pipes, ngModule.schemas, templateSourceUrl(ngModule.type, compMeta, compMeta.template), preserveWhitespaces);\n    }\n  }, {\n    key: \"_resolveStylesCompileResult\",\n    value: function _resolveStylesCompileResult(result, externalStylesheetsByModuleUrl) {\n      var _this300 = this;\n\n      result.dependencies.forEach(function (dep, i) {\n        var nestedCompileResult = externalStylesheetsByModuleUrl.get(dep.moduleUrl);\n\n        var nestedStylesArr = _this300._resolveAndEvalStylesCompileResult(nestedCompileResult, externalStylesheetsByModuleUrl);\n\n        dep.setValue(nestedStylesArr);\n      });\n    }\n  }, {\n    key: \"_resolveAndEvalStylesCompileResult\",\n    value: function _resolveAndEvalStylesCompileResult(result, externalStylesheetsByModuleUrl) {\n      this._resolveStylesCompileResult(result, externalStylesheetsByModuleUrl);\n\n      return this._interpretOrJit(sharedStylesheetJitUrl(result.meta, this._sharedStylesheetCount++), result.outputCtx.statements)[result.stylesVar];\n    }\n  }, {\n    key: \"_interpretOrJit\",\n    value: function _interpretOrJit(sourceUrl, statements) {\n      if (!this._compilerConfig.useJit) {\n        return interpretStatements(statements, this._reflector);\n      } else {\n        return this._jitEvaluator.evaluateStatements(sourceUrl, statements, this._reflector, this._compilerConfig.jitDevMode);\n      }\n    }\n  }]);\n\n  return JitCompiler;\n}();\n\nvar CompiledTemplate = /*#__PURE__*/function () {\n  function CompiledTemplate(isHost, compType, compMeta, ngModule, directives) {\n    _classCallCheck(this, CompiledTemplate);\n\n    this.isHost = isHost;\n    this.compType = compType;\n    this.compMeta = compMeta;\n    this.ngModule = ngModule;\n    this.directives = directives;\n    this._viewClass = null;\n    this.isCompiled = false;\n  }\n\n  _createClass(CompiledTemplate, [{\n    key: \"compiled\",\n    value: function compiled(viewClass, rendererType) {\n      this._viewClass = viewClass;\n      this.compMeta.componentViewType.setDelegate(viewClass);\n\n      for (var prop in rendererType) {\n        this.compMeta.rendererType[prop] = rendererType[prop];\n      }\n\n      this.isCompiled = true;\n    }\n  }]);\n\n  return CompiledTemplate;\n}();\n\nfunction assertComponent(meta) {\n  if (!meta.isComponent) {\n    throw new Error(\"Could not compile '\".concat(identifierName(meta.type), \"' because it is not a component.\"));\n  }\n}\n\nfunction createOutputContext() {\n  var importExpr$1 = function importExpr$1(symbol) {\n    return importExpr({\n      name: identifierName(symbol),\n      moduleName: null,\n      runtime: symbol\n    });\n  };\n\n  return {\n    statements: [],\n    genFilePath: '',\n    importExpr: importExpr$1,\n    constantPool: new ConstantPool()\n  };\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Provides access to reflection data about symbols that the compiler needs.\n */\n\n\nvar CompileReflector = /*#__PURE__*/_createClass(function CompileReflector() {\n  _classCallCheck(this, CompileReflector);\n});\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Create a {@link UrlResolver} with no package prefix.\n */\n\n\nfunction createUrlResolverWithoutPackagePrefix() {\n  return new UrlResolver();\n}\n\nfunction createOfflineCompileUrlResolver() {\n  return new UrlResolver('.');\n}\n\nvar UrlResolver = /*#__PURE__*/function () {\n  function UrlResolverImpl() {\n    var _packagePrefix = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;\n\n    _classCallCheck(this, UrlResolverImpl);\n\n    this._packagePrefix = _packagePrefix;\n  }\n  /**\n   * Resolves the `url` given the `baseUrl`:\n   * - when the `url` is null, the `baseUrl` is returned,\n   * - if `url` is relative ('path/to/here', './path/to/here'), the resolved url is a combination of\n   * `baseUrl` and `url`,\n   * - if `url` is absolute (it has a scheme: 'http://', 'https://' or start with '/'), the `url` is\n   * returned as is (ignoring the `baseUrl`)\n   */\n\n\n  _createClass(UrlResolverImpl, [{\n    key: \"resolve\",\n    value: function resolve(baseUrl, url) {\n      var resolvedUrl = url;\n\n      if (baseUrl != null && baseUrl.length > 0) {\n        resolvedUrl = _resolveUrl(baseUrl, resolvedUrl);\n      }\n\n      var resolvedParts = _split(resolvedUrl);\n\n      var prefix = this._packagePrefix;\n\n      if (prefix != null && resolvedParts != null && resolvedParts[_ComponentIndex.Scheme] == 'package') {\n        var path = resolvedParts[_ComponentIndex.Path];\n        prefix = prefix.replace(/\\/+$/, '');\n        path = path.replace(/^\\/+/, '');\n        return \"\".concat(prefix, \"/\").concat(path);\n      }\n\n      return resolvedUrl;\n    }\n  }]);\n\n  return UrlResolverImpl;\n}();\n/**\n * Extract the scheme of a URL.\n */\n\n\nfunction getUrlScheme(url) {\n  var match = _split(url);\n\n  return match && match[_ComponentIndex.Scheme] || '';\n} // The code below is adapted from Traceur:\n// https://github.com/google/traceur-compiler/blob/9511c1dafa972bf0de1202a8a863bad02f0f95a8/src/runtime/url.js\n\n/**\n * Builds a URI string from already-encoded parts.\n *\n * No encoding is performed.  Any component may be omitted as either null or\n * undefined.\n *\n * @param opt_scheme The scheme such as 'http'.\n * @param opt_userInfo The user name before the '@'.\n * @param opt_domain The domain such as 'www.google.com', already\n *     URI-encoded.\n * @param opt_port The port number.\n * @param opt_path The path, already URI-encoded.  If it is not\n *     empty, it must begin with a slash.\n * @param opt_queryData The URI-encoded query data.\n * @param opt_fragment The URI-encoded fragment identifier.\n * @return The fully combined URI.\n */\n\n\nfunction _buildFromEncodedParts(opt_scheme, opt_userInfo, opt_domain, opt_port, opt_path, opt_queryData, opt_fragment) {\n  var out = [];\n\n  if (opt_scheme != null) {\n    out.push(opt_scheme + ':');\n  }\n\n  if (opt_domain != null) {\n    out.push('//');\n\n    if (opt_userInfo != null) {\n      out.push(opt_userInfo + '@');\n    }\n\n    out.push(opt_domain);\n\n    if (opt_port != null) {\n      out.push(':' + opt_port);\n    }\n  }\n\n  if (opt_path != null) {\n    out.push(opt_path);\n  }\n\n  if (opt_queryData != null) {\n    out.push('?' + opt_queryData);\n  }\n\n  if (opt_fragment != null) {\n    out.push('#' + opt_fragment);\n  }\n\n  return out.join('');\n}\n/**\n * A regular expression for breaking a URI into its component parts.\n *\n * {@link http://www.gbiv.com/protocols/uri/rfc/rfc3986.html#RFC2234} says\n * As the \"first-match-wins\" algorithm is identical to the \"greedy\"\n * disambiguation method used by POSIX regular expressions, it is natural and\n * commonplace to use a regular expression for parsing the potential five\n * components of a URI reference.\n *\n * The following line is the regular expression for breaking-down a\n * well-formed URI reference into its components.\n *\n * <pre>\n * ^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\\?([^#]*))?(#(.*))?\n *  12            3  4          5       6  7        8 9\n * </pre>\n *\n * The numbers in the second line above are only to assist readability; they\n * indicate the reference points for each subexpression (i.e., each paired\n * parenthesis). We refer to the value matched for subexpression <n> as $<n>.\n * For example, matching the above expression to\n * <pre>\n *     http://www.ics.uci.edu/pub/ietf/uri/#Related\n * </pre>\n * results in the following subexpression matches:\n * <pre>\n *    $1 = http:\n *    $2 = http\n *    $3 = //www.ics.uci.edu\n *    $4 = www.ics.uci.edu\n *    $5 = /pub/ietf/uri/\n *    $6 = <undefined>\n *    $7 = <undefined>\n *    $8 = #Related\n *    $9 = Related\n * </pre>\n * where <undefined> indicates that the component is not present, as is the\n * case for the query component in the above example. Therefore, we can\n * determine the value of the five components as\n * <pre>\n *    scheme    = $2\n *    authority = $4\n *    path      = $5\n *    query     = $7\n *    fragment  = $9\n * </pre>\n *\n * The regular expression has been modified slightly to expose the\n * userInfo, domain, and port separately from the authority.\n * The modified version yields\n * <pre>\n *    $1 = http              scheme\n *    $2 = <undefined>       userInfo -\\\n *    $3 = www.ics.uci.edu   domain     | authority\n *    $4 = <undefined>       port     -/\n *    $5 = /pub/ietf/uri/    path\n *    $6 = <undefined>       query without ?\n *    $7 = Related           fragment without #\n * </pre>\n * @internal\n */\n\n\nvar _splitRe = new RegExp('^' + '(?:' + '([^:/?#.]+)' + // scheme - ignore special characters\n// used by other URL parts such as :,\n// ?, /, #, and .\n':)?' + '(?://' + '(?:([^/?#]*)@)?' + // userInfo\n\"([\\\\w\\\\d\\\\-\\\\u0100-\\\\uffff.%]*)\" + // domain - restrict to letters,\n// digits, dashes, dots, percent\n// escapes, and unicode characters.\n'(?::([0-9]+))?' + // port\n')?' + '([^?#]+)?' + // path\n'(?:\\\\?([^#]*))?' + // query\n'(?:#(.*))?' + // fragment\n'$');\n/**\n * The index of each URI component in the return value of goog.uri.utils.split.\n * @enum {number}\n */\n\n\nvar _ComponentIndex;\n\n(function (_ComponentIndex) {\n  _ComponentIndex[_ComponentIndex[\"Scheme\"] = 1] = \"Scheme\";\n  _ComponentIndex[_ComponentIndex[\"UserInfo\"] = 2] = \"UserInfo\";\n  _ComponentIndex[_ComponentIndex[\"Domain\"] = 3] = \"Domain\";\n  _ComponentIndex[_ComponentIndex[\"Port\"] = 4] = \"Port\";\n  _ComponentIndex[_ComponentIndex[\"Path\"] = 5] = \"Path\";\n  _ComponentIndex[_ComponentIndex[\"QueryData\"] = 6] = \"QueryData\";\n  _ComponentIndex[_ComponentIndex[\"Fragment\"] = 7] = \"Fragment\";\n})(_ComponentIndex || (_ComponentIndex = {}));\n/**\n * Splits a URI into its component parts.\n *\n * Each component can be accessed via the component indices; for example:\n * <pre>\n * goog.uri.utils.split(someStr)[goog.uri.utils.CompontentIndex.QUERY_DATA];\n * </pre>\n *\n * @param uri The URI string to examine.\n * @return Each component still URI-encoded.\n *     Each component that is present will contain the encoded value, whereas\n *     components that are not present will be undefined or empty, depending\n *     on the browser's regular expression implementation.  Never null, since\n *     arbitrary strings may still look like path names.\n */\n\n\nfunction _split(uri) {\n  return uri.match(_splitRe);\n}\n/**\n * Removes dot segments in given path component, as described in\n * RFC 3986, section 5.2.4.\n *\n * @param path A non-empty path component.\n * @return Path component with removed dot segments.\n */\n\n\nfunction _removeDotSegments(path) {\n  if (path == '/') return '/';\n  var leadingSlash = path[0] == '/' ? '/' : '';\n  var trailingSlash = path[path.length - 1] === '/' ? '/' : '';\n  var segments = path.split('/');\n  var out = [];\n  var up = 0;\n\n  for (var pos = 0; pos < segments.length; pos++) {\n    var segment = segments[pos];\n\n    switch (segment) {\n      case '':\n      case '.':\n        break;\n\n      case '..':\n        if (out.length > 0) {\n          out.pop();\n        } else {\n          up++;\n        }\n\n        break;\n\n      default:\n        out.push(segment);\n    }\n  }\n\n  if (leadingSlash == '') {\n    while (up-- > 0) {\n      out.unshift('..');\n    }\n\n    if (out.length === 0) out.push('.');\n  }\n\n  return leadingSlash + out.join('/') + trailingSlash;\n}\n/**\n * Takes an array of the parts from split and canonicalizes the path part\n * and then joins all the parts.\n */\n\n\nfunction _joinAndCanonicalizePath(parts) {\n  var path = parts[_ComponentIndex.Path];\n  path = path == null ? '' : _removeDotSegments(path);\n  parts[_ComponentIndex.Path] = path;\n  return _buildFromEncodedParts(parts[_ComponentIndex.Scheme], parts[_ComponentIndex.UserInfo], parts[_ComponentIndex.Domain], parts[_ComponentIndex.Port], path, parts[_ComponentIndex.QueryData], parts[_ComponentIndex.Fragment]);\n}\n/**\n * Resolves a URL.\n * @param base The URL acting as the base URL.\n * @param to The URL to resolve.\n */\n\n\nfunction _resolveUrl(base, url) {\n  var parts = _split(encodeURI(url));\n\n  var baseParts = _split(base);\n\n  if (parts[_ComponentIndex.Scheme] != null) {\n    return _joinAndCanonicalizePath(parts);\n  } else {\n    parts[_ComponentIndex.Scheme] = baseParts[_ComponentIndex.Scheme];\n  }\n\n  for (var i = _ComponentIndex.Scheme; i <= _ComponentIndex.Port; i++) {\n    if (parts[i] == null) {\n      parts[i] = baseParts[i];\n    }\n  }\n\n  if (parts[_ComponentIndex.Path][0] == '/') {\n    return _joinAndCanonicalizePath(parts);\n  }\n\n  var path = baseParts[_ComponentIndex.Path];\n  if (path == null) path = '/';\n  var index = path.lastIndexOf('/');\n  path = path.substring(0, index + 1) + parts[_ComponentIndex.Path];\n  parts[_ComponentIndex.Path] = path;\n  return _joinAndCanonicalizePath(parts);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar Extractor = /*#__PURE__*/function () {\n  function Extractor(host, staticSymbolResolver, messageBundle, metadataResolver) {\n    _classCallCheck(this, Extractor);\n\n    this.host = host;\n    this.staticSymbolResolver = staticSymbolResolver;\n    this.messageBundle = messageBundle;\n    this.metadataResolver = metadataResolver;\n  }\n\n  _createClass(Extractor, [{\n    key: \"extract\",\n    value: function extract(rootFiles) {\n      var _this301 = this;\n\n      var _analyzeAndValidateNg = analyzeAndValidateNgModules(rootFiles, this.host, this.staticSymbolResolver, this.metadataResolver),\n          files = _analyzeAndValidateNg.files,\n          ngModules = _analyzeAndValidateNg.ngModules;\n\n      return Promise.all(ngModules.map(function (ngModule) {\n        return _this301.metadataResolver.loadNgModuleDirectiveAndPipeMetadata(ngModule.type.reference, false);\n      })).then(function () {\n        var errors = [];\n        files.forEach(function (file) {\n          var compMetas = [];\n          file.directives.forEach(function (directiveType) {\n            var dirMeta = _this301.metadataResolver.getDirectiveMetadata(directiveType);\n\n            if (dirMeta && dirMeta.isComponent) {\n              compMetas.push(dirMeta);\n            }\n          });\n          compMetas.forEach(function (compMeta) {\n            var html = compMeta.template.template; // Template URL points to either an HTML or TS file depending on\n            // whether the file is used with `templateUrl:` or `template:`,\n            // respectively.\n\n            var templateUrl = compMeta.template.templateUrl;\n            var interpolationConfig = InterpolationConfig.fromArray(compMeta.template.interpolation);\n            errors.push.apply(errors, _toConsumableArray(_this301.messageBundle.updateFromTemplate(html, templateUrl, interpolationConfig)));\n          });\n        });\n\n        if (errors.length) {\n          throw new Error(errors.map(function (e) {\n            return e.toString();\n          }).join('\\n'));\n        }\n\n        return _this301.messageBundle;\n      });\n    }\n  }], [{\n    key: \"create\",\n    value: function create(host, locale) {\n      var htmlParser = new HtmlParser();\n      var urlResolver = createAotUrlResolver(host);\n      var symbolCache = new StaticSymbolCache();\n      var summaryResolver = new AotSummaryResolver(host, symbolCache);\n      var staticSymbolResolver = new StaticSymbolResolver(host, symbolCache, summaryResolver);\n      var staticReflector = new StaticReflector(summaryResolver, staticSymbolResolver);\n      var config = new CompilerConfig({\n        defaultEncapsulation: ViewEncapsulation.Emulated,\n        useJit: false\n      });\n      var normalizer = new DirectiveNormalizer({\n        get: function get(url) {\n          return host.loadResource(url);\n        }\n      }, urlResolver, htmlParser, config);\n      var elementSchemaRegistry = new DomElementSchemaRegistry();\n      var resolver = new CompileMetadataResolver(config, htmlParser, new NgModuleResolver(staticReflector), new DirectiveResolver(staticReflector), new PipeResolver(staticReflector), summaryResolver, elementSchemaRegistry, normalizer, console, symbolCache, staticReflector); // TODO(vicb): implicit tags & attributes\n\n      var messageBundle = new MessageBundle(htmlParser, [], {}, locale);\n      var extractor = new Extractor(host, staticSymbolResolver, messageBundle, resolver);\n      return {\n        extractor: extractor,\n        staticReflector: staticReflector\n      };\n    }\n  }]);\n\n  return Extractor;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Processes `Target`s with a given set of directives and performs a binding operation, which\n * returns an object similar to TypeScript's `ts.TypeChecker` that contains knowledge about the\n * target.\n */\n\n\nvar R3TargetBinder = /*#__PURE__*/function () {\n  function R3TargetBinder(directiveMatcher) {\n    _classCallCheck(this, R3TargetBinder);\n\n    this.directiveMatcher = directiveMatcher;\n  }\n  /**\n   * Perform a binding operation on the given `Target` and return a `BoundTarget` which contains\n   * metadata about the types referenced in the template.\n   */\n\n\n  _createClass(R3TargetBinder, [{\n    key: \"bind\",\n    value: function bind(target) {\n      if (!target.template) {\n        // TODO(alxhub): handle targets which contain things like HostBindings, etc.\n        throw new Error('Binding without a template not yet supported');\n      } // First, parse the template into a `Scope` structure. This operation captures the syntactic\n      // scopes in the template and makes them available for later use.\n\n\n      var scope = Scope.apply(target.template); // Use the `Scope` to extract the entities present at every level of the template.\n\n      var templateEntities = extractTemplateEntities(scope); // Next, perform directive matching on the template using the `DirectiveBinder`. This returns:\n      //   - directives: Map of nodes (elements & ng-templates) to the directives on them.\n      //   - bindings: Map of inputs, outputs, and attributes to the directive/element that claims\n      //     them. TODO(alxhub): handle multiple directives claiming an input/output/etc.\n      //   - references: Map of #references to their targets.\n\n      var _DirectiveBinder$appl = DirectiveBinder.apply(target.template, this.directiveMatcher),\n          directives = _DirectiveBinder$appl.directives,\n          bindings = _DirectiveBinder$appl.bindings,\n          references = _DirectiveBinder$appl.references; // Finally, run the TemplateBinder to bind references, variables, and other entities within the\n      // template. This extracts all the metadata that doesn't depend on directive matching.\n\n\n      var _TemplateBinder$apply = TemplateBinder.apply(target.template, scope),\n          expressions = _TemplateBinder$apply.expressions,\n          symbols = _TemplateBinder$apply.symbols,\n          nestingLevel = _TemplateBinder$apply.nestingLevel,\n          usedPipes = _TemplateBinder$apply.usedPipes;\n\n      return new R3BoundTarget(target, directives, bindings, references, expressions, symbols, nestingLevel, templateEntities, usedPipes);\n    }\n  }]);\n\n  return R3TargetBinder;\n}();\n/**\n * Represents a binding scope within a template.\n *\n * Any variables, references, or other named entities declared within the template will\n * be captured and available by name in `namedEntities`. Additionally, child templates will\n * be analyzed and have their child `Scope`s available in `childScopes`.\n */\n\n\nvar Scope = /*#__PURE__*/function () {\n  function Scope(parentScope, template) {\n    _classCallCheck(this, Scope);\n\n    this.parentScope = parentScope;\n    this.template = template;\n    /**\n     * Named members of the `Scope`, such as `Reference`s or `Variable`s.\n     */\n\n    this.namedEntities = new Map();\n    /**\n     * Child `Scope`s for immediately nested `Template`s.\n     */\n\n    this.childScopes = new Map();\n  }\n\n  _createClass(Scope, [{\n    key: \"ingest\",\n    value:\n    /**\n     * Internal method to process the template and populate the `Scope`.\n     */\n    function ingest(template) {\n      var _this302 = this;\n\n      if (template instanceof Template) {\n        // Variables on an <ng-template> are defined in the inner scope.\n        template.variables.forEach(function (node) {\n          return _this302.visitVariable(node);\n        }); // Process the nodes of the template.\n\n        template.children.forEach(function (node) {\n          return node.visit(_this302);\n        });\n      } else {\n        // No overarching `Template` instance, so process the nodes directly.\n        template.forEach(function (node) {\n          return node.visit(_this302);\n        });\n      }\n    }\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(element) {\n      var _this303 = this;\n\n      // `Element`s in the template may have `Reference`s which are captured in the scope.\n      element.references.forEach(function (node) {\n        return _this303.visitReference(node);\n      }); // Recurse into the `Element`'s children.\n\n      element.children.forEach(function (node) {\n        return node.visit(_this303);\n      });\n    }\n  }, {\n    key: \"visitTemplate\",\n    value: function visitTemplate(template) {\n      var _this304 = this;\n\n      // References on a <ng-template> are defined in the outer scope, so capture them before\n      // processing the template's child scope.\n      template.references.forEach(function (node) {\n        return _this304.visitReference(node);\n      }); // Next, create an inner scope and process the template within it.\n\n      var scope = new Scope(this, template);\n      scope.ingest(template);\n      this.childScopes.set(template, scope);\n    }\n  }, {\n    key: \"visitVariable\",\n    value: function visitVariable(variable) {\n      // Declare the variable if it's not already.\n      this.maybeDeclare(variable);\n    }\n  }, {\n    key: \"visitReference\",\n    value: function visitReference(reference) {\n      // Declare the variable if it's not already.\n      this.maybeDeclare(reference);\n    } // Unused visitors.\n\n  }, {\n    key: \"visitContent\",\n    value: function visitContent(content) {}\n  }, {\n    key: \"visitBoundAttribute\",\n    value: function visitBoundAttribute(attr) {}\n  }, {\n    key: \"visitBoundEvent\",\n    value: function visitBoundEvent(event) {}\n  }, {\n    key: \"visitBoundText\",\n    value: function visitBoundText(text) {}\n  }, {\n    key: \"visitText\",\n    value: function visitText(text) {}\n  }, {\n    key: \"visitTextAttribute\",\n    value: function visitTextAttribute(attr) {}\n  }, {\n    key: \"visitIcu\",\n    value: function visitIcu(icu) {}\n  }, {\n    key: \"maybeDeclare\",\n    value: function maybeDeclare(thing) {\n      // Declare something with a name, as long as that name isn't taken.\n      if (!this.namedEntities.has(thing.name)) {\n        this.namedEntities.set(thing.name, thing);\n      }\n    }\n    /**\n     * Look up a variable within this `Scope`.\n     *\n     * This can recurse into a parent `Scope` if it's available.\n     */\n\n  }, {\n    key: \"lookup\",\n    value: function lookup(name) {\n      if (this.namedEntities.has(name)) {\n        // Found in the local scope.\n        return this.namedEntities.get(name);\n      } else if (this.parentScope !== null) {\n        // Not in the local scope, but there's a parent scope so check there.\n        return this.parentScope.lookup(name);\n      } else {\n        // At the top level and it wasn't found.\n        return null;\n      }\n    }\n    /**\n     * Get the child scope for a `Template`.\n     *\n     * This should always be defined.\n     */\n\n  }, {\n    key: \"getChildScope\",\n    value: function getChildScope(template) {\n      var res = this.childScopes.get(template);\n\n      if (res === undefined) {\n        throw new Error(\"Assertion error: child scope for \".concat(template, \" not found\"));\n      }\n\n      return res;\n    }\n  }], [{\n    key: \"newRootScope\",\n    value: function newRootScope() {\n      return new Scope(null, null);\n    }\n    /**\n     * Process a template (either as a `Template` sub-template with variables, or a plain array of\n     * template `Node`s) and construct its `Scope`.\n     */\n\n  }, {\n    key: \"apply\",\n    value: function apply(template) {\n      var scope = Scope.newRootScope();\n      scope.ingest(template);\n      return scope;\n    }\n  }]);\n\n  return Scope;\n}();\n/**\n * Processes a template and matches directives on nodes (elements and templates).\n *\n * Usually used via the static `apply()` method.\n */\n\n\nvar DirectiveBinder = /*#__PURE__*/function () {\n  function DirectiveBinder(matcher, directives, bindings, references) {\n    _classCallCheck(this, DirectiveBinder);\n\n    this.matcher = matcher;\n    this.directives = directives;\n    this.bindings = bindings;\n    this.references = references;\n  }\n  /**\n   * Process a template (list of `Node`s) and perform directive matching against each node.\n   *\n   * @param template the list of template `Node`s to match (recursively).\n   * @param selectorMatcher a `SelectorMatcher` containing the directives that are in scope for\n   * this template.\n   * @returns three maps which contain information about directives in the template: the\n   * `directives` map which lists directives matched on each node, the `bindings` map which\n   * indicates which directives claimed which bindings (inputs, outputs, etc), and the `references`\n   * map which resolves #references (`Reference`s) within the template to the named directive or\n   * template node.\n   */\n\n\n  _createClass(DirectiveBinder, [{\n    key: \"ingest\",\n    value: function ingest(template) {\n      var _this305 = this;\n\n      template.forEach(function (node) {\n        return node.visit(_this305);\n      });\n    }\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(element) {\n      this.visitElementOrTemplate(element.name, element);\n    }\n  }, {\n    key: \"visitTemplate\",\n    value: function visitTemplate(template) {\n      this.visitElementOrTemplate('ng-template', template);\n    }\n  }, {\n    key: \"visitElementOrTemplate\",\n    value: function visitElementOrTemplate(elementName, node) {\n      var _this306 = this;\n\n      // First, determine the HTML shape of the node for the purpose of directive matching.\n      // Do this by building up a `CssSelector` for the node.\n      var cssSelector = createCssSelector(elementName, getAttrsForDirectiveMatching(node)); // Next, use the `SelectorMatcher` to get the list of directives on the node.\n\n      var directives = [];\n      this.matcher.match(cssSelector, function (_, directive) {\n        return directives.push(directive);\n      });\n\n      if (directives.length > 0) {\n        this.directives.set(node, directives);\n      } // Resolve any references that are created on this node.\n\n\n      node.references.forEach(function (ref) {\n        var dirTarget = null; // If the reference expression is empty, then it matches the \"primary\" directive on the node\n        // (if there is one). Otherwise it matches the host node itself (either an element or\n        // <ng-template> node).\n\n        if (ref.value.trim() === '') {\n          // This could be a reference to a component if there is one.\n          dirTarget = directives.find(function (dir) {\n            return dir.isComponent;\n          }) || null;\n        } else {\n          // This should be a reference to a directive exported via exportAs.\n          dirTarget = directives.find(function (dir) {\n            return dir.exportAs !== null && dir.exportAs.some(function (value) {\n              return value === ref.value;\n            });\n          }) || null; // Check if a matching directive was found.\n\n          if (dirTarget === null) {\n            // No matching directive was found - this reference points to an unknown target. Leave it\n            // unmapped.\n            return;\n          }\n        }\n\n        if (dirTarget !== null) {\n          // This reference points to a directive.\n          _this306.references.set(ref, {\n            directive: dirTarget,\n            node: node\n          });\n        } else {\n          // This reference points to the node itself.\n          _this306.references.set(ref, node);\n        }\n      });\n\n      var setAttributeBinding = function setAttributeBinding(attribute, ioType) {\n        var dir = directives.find(function (dir) {\n          return dir[ioType].hasBindingPropertyName(attribute.name);\n        });\n        var binding = dir !== undefined ? dir : node;\n\n        _this306.bindings.set(attribute, binding);\n      }; // Node inputs (bound attributes) and text attributes can be bound to an\n      // input on a directive.\n\n\n      node.inputs.forEach(function (input) {\n        return setAttributeBinding(input, 'inputs');\n      });\n      node.attributes.forEach(function (attr) {\n        return setAttributeBinding(attr, 'inputs');\n      });\n\n      if (node instanceof Template) {\n        node.templateAttrs.forEach(function (attr) {\n          return setAttributeBinding(attr, 'inputs');\n        });\n      } // Node outputs (bound events) can be bound to an output on a directive.\n\n\n      node.outputs.forEach(function (output) {\n        return setAttributeBinding(output, 'outputs');\n      }); // Recurse into the node's children.\n\n      node.children.forEach(function (child) {\n        return child.visit(_this306);\n      });\n    } // Unused visitors.\n\n  }, {\n    key: \"visitContent\",\n    value: function visitContent(content) {}\n  }, {\n    key: \"visitVariable\",\n    value: function visitVariable(variable) {}\n  }, {\n    key: \"visitReference\",\n    value: function visitReference(reference) {}\n  }, {\n    key: \"visitTextAttribute\",\n    value: function visitTextAttribute(attribute) {}\n  }, {\n    key: \"visitBoundAttribute\",\n    value: function visitBoundAttribute(attribute) {}\n  }, {\n    key: \"visitBoundEvent\",\n    value: function visitBoundEvent(attribute) {}\n  }, {\n    key: \"visitBoundAttributeOrEvent\",\n    value: function visitBoundAttributeOrEvent(node) {}\n  }, {\n    key: \"visitText\",\n    value: function visitText(text) {}\n  }, {\n    key: \"visitBoundText\",\n    value: function visitBoundText(text) {}\n  }, {\n    key: \"visitIcu\",\n    value: function visitIcu(icu) {}\n  }], [{\n    key: \"apply\",\n    value: function apply(template, selectorMatcher) {\n      var directives = new Map();\n      var bindings = new Map();\n      var references = new Map();\n      var matcher = new DirectiveBinder(selectorMatcher, directives, bindings, references);\n      matcher.ingest(template);\n      return {\n        directives: directives,\n        bindings: bindings,\n        references: references\n      };\n    }\n  }]);\n\n  return DirectiveBinder;\n}();\n/**\n * Processes a template and extract metadata about expressions and symbols within.\n *\n * This is a companion to the `DirectiveBinder` that doesn't require knowledge of directives matched\n * within the template in order to operate.\n *\n * Expressions are visited by the superclass `RecursiveAstVisitor`, with custom logic provided\n * by overridden methods from that visitor.\n */\n\n\nvar TemplateBinder = /*#__PURE__*/function (_RecursiveAstVisitor$3) {\n  _inherits(TemplateBinder, _RecursiveAstVisitor$3);\n\n  var _super110 = _createSuper(TemplateBinder);\n\n  function TemplateBinder(bindings, symbols, usedPipes, nestingLevel, scope, template, level) {\n    var _this307;\n\n    _classCallCheck(this, TemplateBinder);\n\n    _this307 = _super110.call(this);\n    _this307.bindings = bindings;\n    _this307.symbols = symbols;\n    _this307.usedPipes = usedPipes;\n    _this307.nestingLevel = nestingLevel;\n    _this307.scope = scope;\n    _this307.template = template;\n    _this307.level = level;\n    _this307.pipesUsed = []; // Save a bit of processing time by constructing this closure in advance.\n\n    _this307.visitNode = function (node) {\n      return node.visit(_assertThisInitialized(_this307));\n    };\n\n    return _this307;\n  } // This method is defined to reconcile the type of TemplateBinder since both\n  // RecursiveAstVisitor and Visitor define the visit() method in their\n  // interfaces.\n\n\n  _createClass(TemplateBinder, [{\n    key: \"visit\",\n    value: function visit(node, context) {\n      if (node instanceof AST) {\n        node.visit(this, context);\n      } else {\n        node.visit(this);\n      }\n    }\n    /**\n     * Process a template and extract metadata about expressions and symbols within.\n     *\n     * @param template the nodes of the template to process\n     * @param scope the `Scope` of the template being processed.\n     * @returns three maps which contain metadata about the template: `expressions` which interprets\n     * special `AST` nodes in expressions as pointing to references or variables declared within the\n     * template, `symbols` which maps those variables and references to the nested `Template` which\n     * declares them, if any, and `nestingLevel` which associates each `Template` with a integer\n     * nesting level (how many levels deep within the template structure the `Template` is), starting\n     * at 1.\n     */\n\n  }, {\n    key: \"ingest\",\n    value: function ingest(template) {\n      if (template instanceof Template) {\n        // For <ng-template>s, process only variables and child nodes. Inputs, outputs, templateAttrs,\n        // and references were all processed in the scope of the containing template.\n        template.variables.forEach(this.visitNode);\n        template.children.forEach(this.visitNode); // Set the nesting level.\n\n        this.nestingLevel.set(template, this.level);\n      } else {\n        // Visit each node from the top-level template.\n        template.forEach(this.visitNode);\n      }\n    }\n  }, {\n    key: \"visitElement\",\n    value: function visitElement(element) {\n      // Visit the inputs, outputs, and children of the element.\n      element.inputs.forEach(this.visitNode);\n      element.outputs.forEach(this.visitNode);\n      element.children.forEach(this.visitNode);\n    }\n  }, {\n    key: \"visitTemplate\",\n    value: function visitTemplate(template) {\n      // First, visit inputs, outputs and template attributes of the template node.\n      template.inputs.forEach(this.visitNode);\n      template.outputs.forEach(this.visitNode);\n      template.templateAttrs.forEach(this.visitNode); // References are also evaluated in the outer context.\n\n      template.references.forEach(this.visitNode); // Next, recurse into the template using its scope, and bumping the nesting level up by one.\n\n      var childScope = this.scope.getChildScope(template);\n      var binder = new TemplateBinder(this.bindings, this.symbols, this.usedPipes, this.nestingLevel, childScope, template, this.level + 1);\n      binder.ingest(template);\n    }\n  }, {\n    key: \"visitVariable\",\n    value: function visitVariable(variable) {\n      // Register the `Variable` as a symbol in the current `Template`.\n      if (this.template !== null) {\n        this.symbols.set(variable, this.template);\n      }\n    }\n  }, {\n    key: \"visitReference\",\n    value: function visitReference(reference) {\n      // Register the `Reference` as a symbol in the current `Template`.\n      if (this.template !== null) {\n        this.symbols.set(reference, this.template);\n      }\n    } // Unused template visitors\n\n  }, {\n    key: \"visitText\",\n    value: function visitText(text) {}\n  }, {\n    key: \"visitContent\",\n    value: function visitContent(content) {}\n  }, {\n    key: \"visitTextAttribute\",\n    value: function visitTextAttribute(attribute) {}\n  }, {\n    key: \"visitIcu\",\n    value: function visitIcu(icu) {\n      var _this308 = this;\n\n      Object.keys(icu.vars).forEach(function (key) {\n        return icu.vars[key].visit(_this308);\n      });\n      Object.keys(icu.placeholders).forEach(function (key) {\n        return icu.placeholders[key].visit(_this308);\n      });\n    } // The remaining visitors are concerned with processing AST expressions within template bindings\n\n  }, {\n    key: \"visitBoundAttribute\",\n    value: function visitBoundAttribute(attribute) {\n      attribute.value.visit(this);\n    }\n  }, {\n    key: \"visitBoundEvent\",\n    value: function visitBoundEvent(event) {\n      event.handler.visit(this);\n    }\n  }, {\n    key: \"visitBoundText\",\n    value: function visitBoundText(text) {\n      text.value.visit(this);\n    }\n  }, {\n    key: \"visitPipe\",\n    value: function visitPipe(ast, context) {\n      this.usedPipes.add(ast.name);\n      return _get(_getPrototypeOf(TemplateBinder.prototype), \"visitPipe\", this).call(this, ast, context);\n    } // These five types of AST expressions can refer to expression roots, which could be variables\n    // or references in the current scope.\n\n  }, {\n    key: \"visitPropertyRead\",\n    value: function visitPropertyRead(ast, context) {\n      this.maybeMap(context, ast, ast.name);\n      return _get(_getPrototypeOf(TemplateBinder.prototype), \"visitPropertyRead\", this).call(this, ast, context);\n    }\n  }, {\n    key: \"visitSafePropertyRead\",\n    value: function visitSafePropertyRead(ast, context) {\n      this.maybeMap(context, ast, ast.name);\n      return _get(_getPrototypeOf(TemplateBinder.prototype), \"visitSafePropertyRead\", this).call(this, ast, context);\n    }\n  }, {\n    key: \"visitPropertyWrite\",\n    value: function visitPropertyWrite(ast, context) {\n      this.maybeMap(context, ast, ast.name);\n      return _get(_getPrototypeOf(TemplateBinder.prototype), \"visitPropertyWrite\", this).call(this, ast, context);\n    }\n  }, {\n    key: \"visitMethodCall\",\n    value: function visitMethodCall(ast, context) {\n      this.maybeMap(context, ast, ast.name);\n      return _get(_getPrototypeOf(TemplateBinder.prototype), \"visitMethodCall\", this).call(this, ast, context);\n    }\n  }, {\n    key: \"visitSafeMethodCall\",\n    value: function visitSafeMethodCall(ast, context) {\n      this.maybeMap(context, ast, ast.name);\n      return _get(_getPrototypeOf(TemplateBinder.prototype), \"visitSafeMethodCall\", this).call(this, ast, context);\n    }\n  }, {\n    key: \"maybeMap\",\n    value: function maybeMap(scope, ast, name) {\n      // If the receiver of the expression isn't the `ImplicitReceiver`, this isn't the root of an\n      // `AST` expression that maps to a `Variable` or `Reference`.\n      if (!(ast.receiver instanceof ImplicitReceiver)) {\n        return;\n      } // Check whether the name exists in the current scope. If so, map it. Otherwise, the name is\n      // probably a property on the top-level component context.\n\n\n      var target = this.scope.lookup(name);\n\n      if (target !== null) {\n        this.bindings.set(ast, target);\n      }\n    }\n  }], [{\n    key: \"apply\",\n    value: function apply(template, scope) {\n      var expressions = new Map();\n      var symbols = new Map();\n      var nestingLevel = new Map();\n      var usedPipes = new Set(); // The top-level template has nesting level 0.\n\n      var binder = new TemplateBinder(expressions, symbols, usedPipes, nestingLevel, scope, template instanceof Template ? template : null, 0);\n      binder.ingest(template);\n      return {\n        expressions: expressions,\n        symbols: symbols,\n        nestingLevel: nestingLevel,\n        usedPipes: usedPipes\n      };\n    }\n  }]);\n\n  return TemplateBinder;\n}(RecursiveAstVisitor$1);\n/**\n * Metadata container for a `Target` that allows queries for specific bits of metadata.\n *\n * See `BoundTarget` for documentation on the individual methods.\n */\n\n\nvar R3BoundTarget = /*#__PURE__*/function () {\n  function R3BoundTarget(target, directives, bindings, references, exprTargets, symbols, nestingLevel, templateEntities, usedPipes) {\n    _classCallCheck(this, R3BoundTarget);\n\n    this.target = target;\n    this.directives = directives;\n    this.bindings = bindings;\n    this.references = references;\n    this.exprTargets = exprTargets;\n    this.symbols = symbols;\n    this.nestingLevel = nestingLevel;\n    this.templateEntities = templateEntities;\n    this.usedPipes = usedPipes;\n  }\n\n  _createClass(R3BoundTarget, [{\n    key: \"getEntitiesInTemplateScope\",\n    value: function getEntitiesInTemplateScope(template) {\n      var _a;\n\n      return (_a = this.templateEntities.get(template)) !== null && _a !== void 0 ? _a : new Set();\n    }\n  }, {\n    key: \"getDirectivesOfNode\",\n    value: function getDirectivesOfNode(node) {\n      return this.directives.get(node) || null;\n    }\n  }, {\n    key: \"getReferenceTarget\",\n    value: function getReferenceTarget(ref) {\n      return this.references.get(ref) || null;\n    }\n  }, {\n    key: \"getConsumerOfBinding\",\n    value: function getConsumerOfBinding(binding) {\n      return this.bindings.get(binding) || null;\n    }\n  }, {\n    key: \"getExpressionTarget\",\n    value: function getExpressionTarget(expr) {\n      return this.exprTargets.get(expr) || null;\n    }\n  }, {\n    key: \"getTemplateOfSymbol\",\n    value: function getTemplateOfSymbol(symbol) {\n      return this.symbols.get(symbol) || null;\n    }\n  }, {\n    key: \"getNestingLevel\",\n    value: function getNestingLevel(template) {\n      return this.nestingLevel.get(template) || 0;\n    }\n  }, {\n    key: \"getUsedDirectives\",\n    value: function getUsedDirectives() {\n      var set = new Set();\n      this.directives.forEach(function (dirs) {\n        return dirs.forEach(function (dir) {\n          return set.add(dir);\n        });\n      });\n      return Array.from(set.values());\n    }\n  }, {\n    key: \"getUsedPipes\",\n    value: function getUsedPipes() {\n      return Array.from(this.usedPipes);\n    }\n  }]);\n\n  return R3BoundTarget;\n}();\n\nfunction extractTemplateEntities(rootScope) {\n  var entityMap = new Map();\n\n  function extractScopeEntities(scope) {\n    if (entityMap.has(scope.template)) {\n      return entityMap.get(scope.template);\n    }\n\n    var currentEntities = scope.namedEntities;\n    var templateEntities;\n\n    if (scope.parentScope !== null) {\n      templateEntities = new Map([].concat(_toConsumableArray(extractScopeEntities(scope.parentScope)), _toConsumableArray(currentEntities)));\n    } else {\n      templateEntities = new Map(currentEntities);\n    }\n\n    entityMap.set(scope.template, templateEntities);\n    return templateEntities;\n  }\n\n  var scopesToProcess = [rootScope];\n\n  while (scopesToProcess.length > 0) {\n    var scope = scopesToProcess.pop();\n\n    var _iterator41 = _createForOfIteratorHelper(scope.childScopes.values()),\n        _step41;\n\n    try {\n      for (_iterator41.s(); !(_step41 = _iterator41.n()).done;) {\n        var childScope = _step41.value;\n        scopesToProcess.push(childScope);\n      }\n    } catch (err) {\n      _iterator41.e(err);\n    } finally {\n      _iterator41.f();\n    }\n\n    extractScopeEntities(scope);\n  }\n\n  var templateEntities = new Map();\n\n  var _iterator42 = _createForOfIteratorHelper(entityMap),\n      _step42;\n\n  try {\n    for (_iterator42.s(); !(_step42 = _iterator42.n()).done;) {\n      var _ref56 = _step42.value;\n\n      var _ref55 = _slicedToArray(_ref56, 2);\n\n      var template = _ref55[0];\n      var entities = _ref55[1];\n      templateEntities.set(template, new Set(entities.values()));\n    }\n  } catch (err) {\n    _iterator42.e(err);\n  } finally {\n    _iterator42.f();\n  }\n\n  return templateEntities;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// This file only reexports content of the `src` folder. Keep it that way.\n// This function call has a global side effects and publishes the compiler into global namespace for\n// the late binding of the Compiler to the @angular/core for jit compilation.\n\n\npublishFacade(_global);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// This file only reexports content of the `src` folder. Keep it that way.\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nexport { AST, ASTWithName, ASTWithSource, AbsoluteSourceSpan, AotCompiler, AotSummaryResolver, ArrayType, AssertNotNull, AstMemoryEfficientTransformer, AstPath, AstTransformer$1 as AstTransformer, AttrAst, Attribute, Binary, BinaryOperator, BinaryOperatorExpr, BindingPipe, BoundDirectivePropertyAst, BoundElementProperty, BoundElementPropertyAst, BoundEventAst, BoundTextAst, BuiltinMethod, BuiltinType, BuiltinTypeName, BuiltinVar, CONTENT_ATTR, CUSTOM_ELEMENTS_SCHEMA, CastExpr, Chain, ClassField, ClassMethod, ClassStmt, CommaExpr, Comment, CompileDirectiveMetadata, CompileMetadataResolver, CompileNgModuleMetadata, CompilePipeMetadata, CompileReflector, CompileShallowModuleMetadata, CompileStylesheetMetadata, CompileSummaryKind, CompileTemplateMetadata, CompiledStylesheet, CompilerConfig, Conditional, ConditionalExpr, ConstantPool, CssSelector, DEFAULT_INTERPOLATION_CONFIG, DYNAMIC_TYPE, DeclareFunctionStmt, DeclareVarStmt, DirectiveAst, DirectiveNormalizer, DirectiveResolver, DomElementSchemaRegistry, EOF, ERROR_COMPONENT_TYPE, Element$1 as Element, ElementAst, ElementSchemaRegistry, EmbeddedTemplateAst, EmitterVisitorContext, EmptyExpr, Expansion, ExpansionCase, Expression, ExpressionBinding, ExpressionStatement, ExpressionType, ExternalExpr, ExternalReference, Extractor, FunctionCall, FunctionExpr, GeneratedFile, HOST_ATTR, HtmlParser, HtmlTagDefinition, I18NHtmlParser, Identifiers, IfStmt, ImplicitReceiver, InstantiateExpr, Interpolation, InterpolationConfig, InvokeFunctionExpr, InvokeMethodExpr, IvyParser, JSDocComment, JitCompiler, JitEvaluator, JitSummaryResolver, KeyedRead, KeyedWrite, LeadingComment, Lexer, LiteralArray, LiteralArrayExpr, LiteralExpr, LiteralMap, LiteralMapExpr, LiteralPrimitive, LocalizedString, MapType, MessageBundle, MethodCall, NAMED_ENTITIES, NGSP_UNICODE, NONE_TYPE, NO_ERRORS_SCHEMA, NgContentAst, NgModuleCompiler, NgModuleResolver, NodeWithI18n, NonNullAssert, NotExpr, NullTemplateVisitor, ParseError, ParseErrorLevel, ParseLocation, ParseSourceFile, ParseSourceSpan, ParseSpan, ParseTreeResult, ParsedEvent, ParsedProperty, ParsedPropertyType, ParsedVariable, Parser$1 as Parser, ParserError, PipeResolver, PrefixNot, PropertyRead, PropertyWrite, ProviderAst, ProviderAstType, ProviderMeta, Quote, R3BoundTarget, R3FactoryTarget, Identifiers$1 as R3Identifiers, R3ResolvedDependencyType, R3TargetBinder, ReadKeyExpr, ReadPropExpr, ReadVarExpr, RecursiveAstVisitor$1 as RecursiveAstVisitor, RecursiveTemplateAstVisitor, RecursiveVisitor$1 as RecursiveVisitor, ReferenceAst, ResolvedStaticSymbol, ResourceLoader, ReturnStatement, STRING_TYPE, SafeMethodCall, SafePropertyRead, SelectorContext, SelectorListContext, SelectorMatcher, Serializer, SplitInterpolation, Statement, StaticReflector, StaticSymbol, StaticSymbolCache, StaticSymbolResolver, StmtModifier, StyleCompiler, StylesCompileDependency, SummaryResolver, TagContentType, TemplateBindingParseResult, TemplateParseError, TemplateParseResult, TemplateParser, Text$3 as Text, TextAst, ThisReceiver, ThrowStmt, BoundAttribute as TmplAstBoundAttribute, BoundEvent as TmplAstBoundEvent, BoundText as TmplAstBoundText, Content as TmplAstContent, Element as TmplAstElement, Icu as TmplAstIcu, RecursiveVisitor as TmplAstRecursiveVisitor, Reference as TmplAstReference, Template as TmplAstTemplate, Text as TmplAstText, TextAttribute as TmplAstTextAttribute, Variable as TmplAstVariable, Token$1 as Token, TokenType$1 as TokenType, TransitiveCompileNgModuleMetadata, TreeError, TryCatchStmt, Type$1 as Type, 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\"symbol\" : typeof obj; }, _typeof(obj); }\n\nfunction _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== \"undefined\" && o[Symbol.iterator] || o[\"@@iterator\"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === \"number\") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e2) { throw _e2; }, f: F }; } throw new TypeError(\"Invalid attempt to iterate non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\"); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e3) { didErr = true; err = _e3; }, f: function f() { try { if (!normalCompletion && it.return != null) 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\"prototype\", { writable: false }); if (superClass) _setPrototypeOf(subClass, superClass); }\n\nfunction _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }\n\nfunction _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }\n\nfunction _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === \"object\" || typeof call === \"function\")) { return call; } else if (call !== void 0) { throw new TypeError(\"Derived constructors may only return object or undefined\"); } return _assertThisInitialized(self); }\n\nfunction _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return self; }\n\nfunction _isNativeReflectConstruct() { if (typeof Reflect === \"undefined\" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === \"function\") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }\n\nfunction _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, \"prototype\", { writable: false }); return Constructor; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * @license Angular v11.0.2\n * (c) 2010-2020 Google LLC. https://angular.io/\n * License: MIT\n */\nimport { InjectionToken, ɵɵdefineInjectable, Injectable, ɵɵinject, Inject, Optional, EventEmitter, ɵfindLocaleData, ɵLocaleDataIndex, ɵgetLocaleCurrencyCode, ɵgetLocalePluralCase, LOCALE_ID, ɵregisterLocaleData, ɵisListLikeIterable, ɵstringify, Directive, IterableDiffers, KeyValueDiffers, ElementRef, Renderer2, Input, NgModuleRef, ComponentFactoryResolver, ViewContainerRef, isDevMode, TemplateRef, Host, Attribute, ɵisPromise, ɵisObservable, Pipe, ChangeDetectorRef, DEFAULT_CURRENCY_CODE, NgModule, Version, ErrorHandler } from '@angular/core';\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar _DOM = null;\n\nfunction getDOM() {\n  return _DOM;\n}\n\nfunction setDOM(adapter) {\n  _DOM = adapter;\n}\n\nfunction setRootDomAdapter(adapter) {\n  if (!_DOM) {\n    _DOM = adapter;\n  }\n}\n/* tslint:disable:requireParameterType */\n\n/**\n * Provides DOM operations in an environment-agnostic way.\n *\n * @security Tread carefully! Interacting with the DOM directly is dangerous and\n * can introduce XSS risks.\n */\n\n\nvar DomAdapter = /*#__PURE__*/_createClass(function DomAdapter() {\n  _classCallCheck(this, DomAdapter);\n});\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A DI Token representing the main rendering context. In a browser this is the DOM Document.\n *\n * Note: Document might not be available in the Application Context when Application and Rendering\n * Contexts are not the same (e.g. when running the application in a Web Worker).\n *\n * @publicApi\n */\n\n\nvar DOCUMENT = new InjectionToken('DocumentToken');\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * This class should not be used directly by an application developer. Instead, use\n * {@link Location}.\n *\n * `PlatformLocation` encapsulates all calls to DOM APIs, which allows the Router to be\n * platform-agnostic.\n * This means that we can have different implementation of `PlatformLocation` for the different\n * platforms that Angular supports. For example, `@angular/platform-browser` provides an\n * implementation specific to the browser environment, while `@angular/platform-server` provides\n * one suitable for use with server-side rendering.\n *\n * The `PlatformLocation` class is used directly by all implementations of {@link LocationStrategy}\n * when they need to interact with the DOM APIs like pushState, popState, etc.\n *\n * {@link LocationStrategy} in turn is used by the {@link Location} service which is used directly\n * by the {@link Router} in order to navigate between routes. Since all interactions between {@link\n * Router} /\n * {@link Location} / {@link LocationStrategy} and DOM APIs flow through the `PlatformLocation`\n * class, they are all platform-agnostic.\n *\n * @publicApi\n */\n\nvar PlatformLocation = /*#__PURE__*/_createClass(function PlatformLocation() {\n  _classCallCheck(this, PlatformLocation);\n});\n\nPlatformLocation.ɵprov = ɵɵdefineInjectable({\n  factory: useBrowserPlatformLocation,\n  token: PlatformLocation,\n  providedIn: \"platform\"\n});\nPlatformLocation.decorators = [{\n  type: Injectable,\n  args: [{\n    providedIn: 'platform',\n    // See #23917\n    useFactory: useBrowserPlatformLocation\n  }]\n}];\n\nfunction useBrowserPlatformLocation() {\n  return ɵɵinject(BrowserPlatformLocation);\n}\n/**\n * @description\n * Indicates when a location is initialized.\n *\n * @publicApi\n */\n\n\nvar LOCATION_INITIALIZED = new InjectionToken('Location Initialized');\n/**\n * `PlatformLocation` encapsulates all of the direct calls to platform APIs.\n * This class should not be used directly by an application developer. Instead, use\n * {@link Location}.\n */\n\nvar BrowserPlatformLocation = /*#__PURE__*/function (_PlatformLocation) {\n  _inherits(BrowserPlatformLocation, _PlatformLocation);\n\n  var _super = _createSuper(BrowserPlatformLocation);\n\n  function BrowserPlatformLocation(_doc) {\n    var _this;\n\n    _classCallCheck(this, BrowserPlatformLocation);\n\n    _this = _super.call(this);\n    _this._doc = _doc;\n\n    _this._init();\n\n    return _this;\n  } // This is moved to its own method so that `MockPlatformLocationStrategy` can overwrite it\n\n  /** @internal */\n\n\n  _createClass(BrowserPlatformLocation, [{\n    key: \"_init\",\n    value: function _init() {\n      this.location = getDOM().getLocation();\n      this._history = getDOM().getHistory();\n    }\n  }, {\n    key: \"getBaseHrefFromDOM\",\n    value: function getBaseHrefFromDOM() {\n      return getDOM().getBaseHref(this._doc);\n    }\n  }, {\n    key: \"onPopState\",\n    value: function onPopState(fn) {\n      getDOM().getGlobalEventTarget(this._doc, 'window').addEventListener('popstate', fn, false);\n    }\n  }, {\n    key: \"onHashChange\",\n    value: function onHashChange(fn) {\n      getDOM().getGlobalEventTarget(this._doc, 'window').addEventListener('hashchange', fn, false);\n    }\n  }, {\n    key: \"href\",\n    get: function get() {\n      return this.location.href;\n    }\n  }, {\n    key: \"protocol\",\n    get: function get() {\n      return this.location.protocol;\n    }\n  }, {\n    key: \"hostname\",\n    get: function get() {\n      return this.location.hostname;\n    }\n  }, {\n    key: \"port\",\n    get: function get() {\n      return this.location.port;\n    }\n  }, {\n    key: \"pathname\",\n    get: function get() {\n      return this.location.pathname;\n    },\n    set: function set(newPath) {\n      this.location.pathname = newPath;\n    }\n  }, {\n    key: \"search\",\n    get: function get() {\n      return this.location.search;\n    }\n  }, {\n    key: \"hash\",\n    get: function get() {\n      return this.location.hash;\n    }\n  }, {\n    key: \"pushState\",\n    value: function pushState(state, title, url) {\n      if (supportsState()) {\n        this._history.pushState(state, title, url);\n      } else {\n        this.location.hash = url;\n      }\n    }\n  }, {\n    key: \"replaceState\",\n    value: function replaceState(state, title, url) {\n      if (supportsState()) {\n        this._history.replaceState(state, title, url);\n      } else {\n        this.location.hash = url;\n      }\n    }\n  }, {\n    key: \"forward\",\n    value: function forward() {\n      this._history.forward();\n    }\n  }, {\n    key: \"back\",\n    value: function back() {\n      this._history.back();\n    }\n  }, {\n    key: \"getState\",\n    value: function getState() {\n      return this._history.state;\n    }\n  }]);\n\n  return BrowserPlatformLocation;\n}(PlatformLocation);\n\nBrowserPlatformLocation.ɵprov = ɵɵdefineInjectable({\n  factory: createBrowserPlatformLocation,\n  token: BrowserPlatformLocation,\n  providedIn: \"platform\"\n});\nBrowserPlatformLocation.decorators = [{\n  type: Injectable,\n  args: [{\n    providedIn: 'platform',\n    // See #23917\n    useFactory: createBrowserPlatformLocation\n  }]\n}];\n\nBrowserPlatformLocation.ctorParameters = function () {\n  return [{\n    type: undefined,\n    decorators: [{\n      type: Inject,\n      args: [DOCUMENT]\n    }]\n  }];\n};\n\nfunction supportsState() {\n  return !!window.history.pushState;\n}\n\nfunction createBrowserPlatformLocation() {\n  return new BrowserPlatformLocation(ɵɵinject(DOCUMENT));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Joins two parts of a URL with a slash if needed.\n *\n * @param start  URL string\n * @param end    URL string\n *\n *\n * @returns The joined URL string.\n */\n\n\nfunction joinWithSlash(start, end) {\n  if (start.length == 0) {\n    return end;\n  }\n\n  if (end.length == 0) {\n    return start;\n  }\n\n  var slashes = 0;\n\n  if (start.endsWith('/')) {\n    slashes++;\n  }\n\n  if (end.startsWith('/')) {\n    slashes++;\n  }\n\n  if (slashes == 2) {\n    return start + end.substring(1);\n  }\n\n  if (slashes == 1) {\n    return start + end;\n  }\n\n  return start + '/' + end;\n}\n/**\n * Removes a trailing slash from a URL string if needed.\n * Looks for the first occurrence of either `#`, `?`, or the end of the\n * line as `/` characters and removes the trailing slash if one exists.\n *\n * @param url URL string.\n *\n * @returns The URL string, modified if needed.\n */\n\n\nfunction stripTrailingSlash(url) {\n  var match = url.match(/#|\\?|$/);\n  var pathEndIdx = match && match.index || url.length;\n  var droppedSlashIdx = pathEndIdx - (url[pathEndIdx - 1] === '/' ? 1 : 0);\n  return url.slice(0, droppedSlashIdx) + url.slice(pathEndIdx);\n}\n/**\n * Normalizes URL parameters by prepending with `?` if needed.\n *\n * @param  params String of URL parameters.\n *\n * @returns The normalized URL parameters string.\n */\n\n\nfunction normalizeQueryParams(params) {\n  return params && params[0] !== '?' ? '?' + params : params;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Enables the `Location` service to read route state from the browser's URL.\n * Angular provides two strategies:\n * `HashLocationStrategy` and `PathLocationStrategy`.\n *\n * Applications should use the `Router` or `Location` services to\n * interact with application route state.\n *\n * For instance, `HashLocationStrategy` produces URLs like\n * <code class=\"no-auto-link\">http://example.com#/foo</code>,\n * and `PathLocationStrategy` produces\n * <code class=\"no-auto-link\">http://example.com/foo</code> as an equivalent URL.\n *\n * See these two classes for more.\n *\n * @publicApi\n */\n\n\nvar LocationStrategy = /*#__PURE__*/_createClass(function LocationStrategy() {\n  _classCallCheck(this, LocationStrategy);\n});\n\nLocationStrategy.ɵprov = ɵɵdefineInjectable({\n  factory: provideLocationStrategy,\n  token: LocationStrategy,\n  providedIn: \"root\"\n});\nLocationStrategy.decorators = [{\n  type: Injectable,\n  args: [{\n    providedIn: 'root',\n    useFactory: provideLocationStrategy\n  }]\n}];\n\nfunction provideLocationStrategy(platformLocation) {\n  // See #23917\n  var location = ɵɵinject(DOCUMENT).location;\n  return new PathLocationStrategy(ɵɵinject(PlatformLocation), location && location.origin || '');\n}\n/**\n * A predefined [DI token](guide/glossary#di-token) for the base href\n * to be used with the `PathLocationStrategy`.\n * The base href is the URL prefix that should be preserved when generating\n * and recognizing URLs.\n *\n * @usageNotes\n *\n * The following example shows how to use this token to configure the root app injector\n * with a base href value, so that the DI framework can supply the dependency anywhere in the app.\n *\n * ```typescript\n * import {Component, NgModule} from '@angular/core';\n * import {APP_BASE_HREF} from '@angular/common';\n *\n * @NgModule({\n *   providers: [{provide: APP_BASE_HREF, useValue: '/my/app'}]\n * })\n * class AppModule {}\n * ```\n *\n * @publicApi\n */\n\n\nvar APP_BASE_HREF = new InjectionToken('appBaseHref');\n/**\n * @description\n * A {@link LocationStrategy} used to configure the {@link Location} service to\n * represent its state in the\n * [path](https://en.wikipedia.org/wiki/Uniform_Resource_Locator#Syntax) of the\n * browser's URL.\n *\n * If you're using `PathLocationStrategy`, you must provide a {@link APP_BASE_HREF}\n * or add a `<base href>` element to the document.\n *\n * For instance, if you provide an `APP_BASE_HREF` of `'/my/app/'` and call\n * `location.go('/foo')`, the browser's URL will become\n * `example.com/my/app/foo`. To ensure all relative URIs resolve correctly,\n * the `<base href>` and/or `APP_BASE_HREF` should end with a `/`.\n *\n * Similarly, if you add `<base href='/my/app/'/>` to the document and call\n * `location.go('/foo')`, the browser's URL will become\n * `example.com/my/app/foo`.\n *\n * Note that when using `PathLocationStrategy`, neither the query nor\n * the fragment in the `<base href>` will be preserved, as outlined\n * by the [RFC](https://tools.ietf.org/html/rfc3986#section-5.2.2).\n *\n * @usageNotes\n *\n * ### Example\n *\n * {@example common/location/ts/path_location_component.ts region='LocationComponent'}\n *\n * @publicApi\n */\n\nvar PathLocationStrategy = /*#__PURE__*/function (_LocationStrategy) {\n  _inherits(PathLocationStrategy, _LocationStrategy);\n\n  var _super2 = _createSuper(PathLocationStrategy);\n\n  function PathLocationStrategy(_platformLocation, href) {\n    var _this2;\n\n    _classCallCheck(this, PathLocationStrategy);\n\n    _this2 = _super2.call(this);\n    _this2._platformLocation = _platformLocation;\n\n    if (href == null) {\n      href = _this2._platformLocation.getBaseHrefFromDOM();\n    }\n\n    if (href == null) {\n      throw new Error(\"No base href set. Please provide a value for the APP_BASE_HREF token or add a base element to the document.\");\n    }\n\n    _this2._baseHref = href;\n    return _this2;\n  }\n\n  _createClass(PathLocationStrategy, [{\n    key: \"onPopState\",\n    value: function onPopState(fn) {\n      this._platformLocation.onPopState(fn);\n\n      this._platformLocation.onHashChange(fn);\n    }\n  }, {\n    key: \"getBaseHref\",\n    value: function getBaseHref() {\n      return this._baseHref;\n    }\n  }, {\n    key: \"prepareExternalUrl\",\n    value: function prepareExternalUrl(internal) {\n      return joinWithSlash(this._baseHref, internal);\n    }\n  }, {\n    key: \"path\",\n    value: function path() {\n      var includeHash = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;\n      var pathname = this._platformLocation.pathname + normalizeQueryParams(this._platformLocation.search);\n      var hash = this._platformLocation.hash;\n      return hash && includeHash ? \"\".concat(pathname).concat(hash) : pathname;\n    }\n  }, {\n    key: \"pushState\",\n    value: function pushState(state, title, url, queryParams) {\n      var externalUrl = this.prepareExternalUrl(url + normalizeQueryParams(queryParams));\n\n      this._platformLocation.pushState(state, title, externalUrl);\n    }\n  }, {\n    key: \"replaceState\",\n    value: function replaceState(state, title, url, queryParams) {\n      var externalUrl = this.prepareExternalUrl(url + normalizeQueryParams(queryParams));\n\n      this._platformLocation.replaceState(state, title, externalUrl);\n    }\n  }, {\n    key: \"forward\",\n    value: function forward() {\n      this._platformLocation.forward();\n    }\n  }, {\n    key: \"back\",\n    value: function back() {\n      this._platformLocation.back();\n    }\n  }]);\n\n  return PathLocationStrategy;\n}(LocationStrategy);\n\nPathLocationStrategy.decorators = [{\n  type: Injectable\n}];\n\nPathLocationStrategy.ctorParameters = function () {\n  return [{\n    type: PlatformLocation\n  }, {\n    type: String,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Inject,\n      args: [APP_BASE_HREF]\n    }]\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @description\n * A {@link LocationStrategy} used to configure the {@link Location} service to\n * represent its state in the\n * [hash fragment](https://en.wikipedia.org/wiki/Uniform_Resource_Locator#Syntax)\n * of the browser's URL.\n *\n * For instance, if you call `location.go('/foo')`, the browser's URL will become\n * `example.com#/foo`.\n *\n * @usageNotes\n *\n * ### Example\n *\n * {@example common/location/ts/hash_location_component.ts region='LocationComponent'}\n *\n * @publicApi\n */\n\n\nvar HashLocationStrategy = /*#__PURE__*/function (_LocationStrategy2) {\n  _inherits(HashLocationStrategy, _LocationStrategy2);\n\n  var _super3 = _createSuper(HashLocationStrategy);\n\n  function HashLocationStrategy(_platformLocation, _baseHref) {\n    var _this3;\n\n    _classCallCheck(this, HashLocationStrategy);\n\n    _this3 = _super3.call(this);\n    _this3._platformLocation = _platformLocation;\n    _this3._baseHref = '';\n\n    if (_baseHref != null) {\n      _this3._baseHref = _baseHref;\n    }\n\n    return _this3;\n  }\n\n  _createClass(HashLocationStrategy, [{\n    key: \"onPopState\",\n    value: function onPopState(fn) {\n      this._platformLocation.onPopState(fn);\n\n      this._platformLocation.onHashChange(fn);\n    }\n  }, {\n    key: \"getBaseHref\",\n    value: function getBaseHref() {\n      return this._baseHref;\n    }\n  }, {\n    key: \"path\",\n    value: function path() {\n      var includeHash = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;\n      // the hash value is always prefixed with a `#`\n      // and if it is empty then it will stay empty\n      var path = this._platformLocation.hash;\n      if (path == null) path = '#';\n      return path.length > 0 ? path.substring(1) : path;\n    }\n  }, {\n    key: \"prepareExternalUrl\",\n    value: function prepareExternalUrl(internal) {\n      var url = joinWithSlash(this._baseHref, internal);\n      return url.length > 0 ? '#' + url : url;\n    }\n  }, {\n    key: \"pushState\",\n    value: function pushState(state, title, path, queryParams) {\n      var url = this.prepareExternalUrl(path + normalizeQueryParams(queryParams));\n\n      if (url.length == 0) {\n        url = this._platformLocation.pathname;\n      }\n\n      this._platformLocation.pushState(state, title, url);\n    }\n  }, {\n    key: \"replaceState\",\n    value: function replaceState(state, title, path, queryParams) {\n      var url = this.prepareExternalUrl(path + normalizeQueryParams(queryParams));\n\n      if (url.length == 0) {\n        url = this._platformLocation.pathname;\n      }\n\n      this._platformLocation.replaceState(state, title, url);\n    }\n  }, {\n    key: \"forward\",\n    value: function forward() {\n      this._platformLocation.forward();\n    }\n  }, {\n    key: \"back\",\n    value: function back() {\n      this._platformLocation.back();\n    }\n  }]);\n\n  return HashLocationStrategy;\n}(LocationStrategy);\n\nHashLocationStrategy.decorators = [{\n  type: Injectable\n}];\n\nHashLocationStrategy.ctorParameters = function () {\n  return [{\n    type: PlatformLocation\n  }, {\n    type: String,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Inject,\n      args: [APP_BASE_HREF]\n    }]\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @description\n *\n * A service that applications can use to interact with a browser's URL.\n *\n * Depending on the `LocationStrategy` used, `Location` persists\n * to the URL's path or the URL's hash segment.\n *\n * @usageNotes\n *\n * It's better to use the `Router#navigate` service to trigger route changes. Use\n * `Location` only if you need to interact with or create normalized URLs outside of\n * routing.\n *\n * `Location` is responsible for normalizing the URL against the application's base href.\n * A normalized URL is absolute from the URL host, includes the application's base href, and has no\n * trailing slash:\n * - `/my/app/user/123` is normalized\n * - `my/app/user/123` **is not** normalized\n * - `/my/app/user/123/` **is not** normalized\n *\n * ### Example\n *\n * <code-example path='common/location/ts/path_location_component.ts'\n * region='LocationComponent'></code-example>\n *\n * @publicApi\n */\n\n\nvar Location = /*#__PURE__*/function () {\n  function Location(platformStrategy, platformLocation) {\n    var _this4 = this;\n\n    _classCallCheck(this, Location);\n\n    /** @internal */\n    this._subject = new EventEmitter();\n    /** @internal */\n\n    this._urlChangeListeners = [];\n    this._platformStrategy = platformStrategy;\n\n    var browserBaseHref = this._platformStrategy.getBaseHref();\n\n    this._platformLocation = platformLocation;\n    this._baseHref = stripTrailingSlash(_stripIndexHtml(browserBaseHref));\n\n    this._platformStrategy.onPopState(function (ev) {\n      _this4._subject.emit({\n        'url': _this4.path(true),\n        'pop': true,\n        'state': ev.state,\n        'type': ev.type\n      });\n    });\n  }\n  /**\n   * Normalizes the URL path for this location.\n   *\n   * @param includeHash True to include an anchor fragment in the path.\n   *\n   * @returns The normalized URL path.\n   */\n  // TODO: vsavkin. Remove the boolean flag and always include hash once the deprecated router is\n  // removed.\n\n\n  _createClass(Location, [{\n    key: \"path\",\n    value: function path() {\n      var includeHash = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;\n      return this.normalize(this._platformStrategy.path(includeHash));\n    }\n    /**\n     * Reports the current state of the location history.\n     * @returns The current value of the `history.state` object.\n     */\n\n  }, {\n    key: \"getState\",\n    value: function getState() {\n      return this._platformLocation.getState();\n    }\n    /**\n     * Normalizes the given path and compares to the current normalized path.\n     *\n     * @param path The given URL path.\n     * @param query Query parameters.\n     *\n     * @returns True if the given URL path is equal to the current normalized path, false\n     * otherwise.\n     */\n\n  }, {\n    key: \"isCurrentPathEqualTo\",\n    value: function isCurrentPathEqualTo(path) {\n      var query = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';\n      return this.path() == this.normalize(path + normalizeQueryParams(query));\n    }\n    /**\n     * Normalizes a URL path by stripping any trailing slashes.\n     *\n     * @param url String representing a URL.\n     *\n     * @returns The normalized URL string.\n     */\n\n  }, {\n    key: \"normalize\",\n    value: function normalize(url) {\n      return Location.stripTrailingSlash(_stripBaseHref(this._baseHref, _stripIndexHtml(url)));\n    }\n    /**\n     * Normalizes an external URL path.\n     * If the given URL doesn't begin with a leading slash (`'/'`), adds one\n     * before normalizing. Adds a hash if `HashLocationStrategy` is\n     * in use, or the `APP_BASE_HREF` if the `PathLocationStrategy` is in use.\n     *\n     * @param url String representing a URL.\n     *\n     * @returns  A normalized platform-specific URL.\n     */\n\n  }, {\n    key: \"prepareExternalUrl\",\n    value: function prepareExternalUrl(url) {\n      if (url && url[0] !== '/') {\n        url = '/' + url;\n      }\n\n      return this._platformStrategy.prepareExternalUrl(url);\n    } // TODO: rename this method to pushState\n\n    /**\n     * Changes the browser's URL to a normalized version of a given URL, and pushes a\n     * new item onto the platform's history.\n     *\n     * @param path  URL path to normalize.\n     * @param query Query parameters.\n     * @param state Location history state.\n     *\n     */\n\n  }, {\n    key: \"go\",\n    value: function go(path) {\n      var query = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';\n      var state = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;\n\n      this._platformStrategy.pushState(state, '', path, query);\n\n      this._notifyUrlChangeListeners(this.prepareExternalUrl(path + normalizeQueryParams(query)), state);\n    }\n    /**\n     * Changes the browser's URL to a normalized version of the given URL, and replaces\n     * the top item on the platform's history stack.\n     *\n     * @param path  URL path to normalize.\n     * @param query Query parameters.\n     * @param state Location history state.\n     */\n\n  }, {\n    key: \"replaceState\",\n    value: function replaceState(path) {\n      var query = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';\n      var state = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;\n\n      this._platformStrategy.replaceState(state, '', path, query);\n\n      this._notifyUrlChangeListeners(this.prepareExternalUrl(path + normalizeQueryParams(query)), state);\n    }\n    /**\n     * Navigates forward in the platform's history.\n     */\n\n  }, {\n    key: \"forward\",\n    value: function forward() {\n      this._platformStrategy.forward();\n    }\n    /**\n     * Navigates back in the platform's history.\n     */\n\n  }, {\n    key: \"back\",\n    value: function back() {\n      this._platformStrategy.back();\n    }\n    /**\n     * Registers a URL change listener. Use to catch updates performed by the Angular\n     * framework that are not detectible through \"popstate\" or \"hashchange\" events.\n     *\n     * @param fn The change handler function, which take a URL and a location history state.\n     */\n\n  }, {\n    key: \"onUrlChange\",\n    value: function onUrlChange(fn) {\n      var _this5 = this;\n\n      this._urlChangeListeners.push(fn);\n\n      if (!this._urlChangeSubscription) {\n        this._urlChangeSubscription = this.subscribe(function (v) {\n          _this5._notifyUrlChangeListeners(v.url, v.state);\n        });\n      }\n    }\n    /** @internal */\n\n  }, {\n    key: \"_notifyUrlChangeListeners\",\n    value: function _notifyUrlChangeListeners() {\n      var url = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';\n      var state = arguments.length > 1 ? arguments[1] : undefined;\n\n      this._urlChangeListeners.forEach(function (fn) {\n        return fn(url, state);\n      });\n    }\n    /**\n     * Subscribes to the platform's `popState` events.\n     *\n     * @param value Event that is triggered when the state history changes.\n     * @param exception The exception to throw.\n     *\n     * @returns Subscribed events.\n     */\n\n  }, {\n    key: \"subscribe\",\n    value: function subscribe(onNext, onThrow, onReturn) {\n      return this._subject.subscribe({\n        next: onNext,\n        error: onThrow,\n        complete: onReturn\n      });\n    }\n  }]);\n\n  return Location;\n}();\n/**\n * Normalizes URL parameters by prepending with `?` if needed.\n *\n * @param  params String of URL parameters.\n *\n * @returns The normalized URL parameters string.\n */\n\n\nLocation.normalizeQueryParams = normalizeQueryParams;\n/**\n * Joins two parts of a URL with a slash if needed.\n *\n * @param start  URL string\n * @param end    URL string\n *\n *\n * @returns The joined URL string.\n */\n\nLocation.joinWithSlash = joinWithSlash;\n/**\n * Removes a trailing slash from a URL string if needed.\n * Looks for the first occurrence of either `#`, `?`, or the end of the\n * line as `/` characters and removes the trailing slash if one exists.\n *\n * @param url URL string.\n *\n * @returns The URL string, modified if needed.\n */\n\nLocation.stripTrailingSlash = stripTrailingSlash;\nLocation.ɵprov = ɵɵdefineInjectable({\n  factory: createLocation,\n  token: Location,\n  providedIn: \"root\"\n});\nLocation.decorators = [{\n  type: Injectable,\n  args: [{\n    providedIn: 'root',\n    // See #23917\n    useFactory: createLocation\n  }]\n}];\n\nLocation.ctorParameters = function () {\n  return [{\n    type: LocationStrategy\n  }, {\n    type: PlatformLocation\n  }];\n};\n\nfunction createLocation() {\n  return new Location(ɵɵinject(LocationStrategy), ɵɵinject(PlatformLocation));\n}\n\nfunction _stripBaseHref(baseHref, url) {\n  return baseHref && url.startsWith(baseHref) ? url.substring(baseHref.length) : url;\n}\n\nfunction _stripIndexHtml(url) {\n  return url.replace(/\\/index.html$/, '');\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/** @internal */\n\n\nvar CURRENCIES_EN = {\n  'ADP': [undefined, undefined, 0],\n  'AFN': [undefined, undefined, 0],\n  'ALL': [undefined, undefined, 0],\n  'AMD': [undefined, undefined, 2],\n  'AOA': [undefined, 'Kz'],\n  'ARS': [undefined, '$'],\n  'AUD': ['A$', '$'],\n  'BAM': [undefined, 'KM'],\n  'BBD': [undefined, '$'],\n  'BDT': [undefined, '৳'],\n  'BHD': [undefined, undefined, 3],\n  'BIF': [undefined, undefined, 0],\n  'BMD': [undefined, '$'],\n  'BND': [undefined, '$'],\n  'BOB': [undefined, 'Bs'],\n  'BRL': ['R$'],\n  'BSD': [undefined, '$'],\n  'BWP': [undefined, 'P'],\n  'BYN': [undefined, 'р.', 2],\n  'BYR': [undefined, undefined, 0],\n  'BZD': [undefined, '$'],\n  'CAD': ['CA$', '$', 2],\n  'CHF': [undefined, undefined, 2],\n  'CLF': [undefined, undefined, 4],\n  'CLP': [undefined, '$', 0],\n  'CNY': ['CN¥', '¥'],\n  'COP': [undefined, '$', 2],\n  'CRC': [undefined, '₡', 2],\n  'CUC': [undefined, '$'],\n  'CUP': [undefined, '$'],\n  'CZK': [undefined, 'Kč', 2],\n  'DJF': [undefined, undefined, 0],\n  'DKK': [undefined, 'kr', 2],\n  'DOP': [undefined, '$'],\n  'EGP': [undefined, 'E£'],\n  'ESP': [undefined, '₧', 0],\n  'EUR': ['€'],\n  'FJD': [undefined, '$'],\n  'FKP': [undefined, '£'],\n  'GBP': ['£'],\n  'GEL': [undefined, '₾'],\n  'GIP': [undefined, '£'],\n  'GNF': [undefined, 'FG', 0],\n  'GTQ': [undefined, 'Q'],\n  'GYD': [undefined, '$', 2],\n  'HKD': ['HK$', '$'],\n  'HNL': [undefined, 'L'],\n  'HRK': [undefined, 'kn'],\n  'HUF': [undefined, 'Ft', 2],\n  'IDR': [undefined, 'Rp', 2],\n  'ILS': ['₪'],\n  'INR': ['₹'],\n  'IQD': [undefined, undefined, 0],\n  'IRR': [undefined, undefined, 0],\n  'ISK': [undefined, 'kr', 0],\n  'ITL': [undefined, undefined, 0],\n  'JMD': [undefined, '$'],\n  'JOD': [undefined, undefined, 3],\n  'JPY': ['¥', undefined, 0],\n  'KHR': [undefined, '៛'],\n  'KMF': [undefined, 'CF', 0],\n  'KPW': [undefined, '₩', 0],\n  'KRW': ['₩', undefined, 0],\n  'KWD': [undefined, undefined, 3],\n  'KYD': [undefined, '$'],\n  'KZT': [undefined, '₸'],\n  'LAK': [undefined, '₭', 0],\n  'LBP': [undefined, 'L£', 0],\n  'LKR': [undefined, 'Rs'],\n  'LRD': [undefined, '$'],\n  'LTL': [undefined, 'Lt'],\n  'LUF': [undefined, undefined, 0],\n  'LVL': [undefined, 'Ls'],\n  'LYD': [undefined, undefined, 3],\n  'MGA': [undefined, 'Ar', 0],\n  'MGF': [undefined, undefined, 0],\n  'MMK': [undefined, 'K', 0],\n  'MNT': [undefined, '₮', 2],\n  'MRO': [undefined, undefined, 0],\n  'MUR': [undefined, 'Rs', 2],\n  'MXN': ['MX$', '$'],\n  'MYR': [undefined, 'RM'],\n  'NAD': [undefined, '$'],\n  'NGN': [undefined, '₦'],\n  'NIO': [undefined, 'C$'],\n  'NOK': [undefined, 'kr', 2],\n  'NPR': [undefined, 'Rs'],\n  'NZD': ['NZ$', '$'],\n  'OMR': [undefined, undefined, 3],\n  'PHP': [undefined, '₱'],\n  'PKR': [undefined, 'Rs', 2],\n  'PLN': [undefined, 'zł'],\n  'PYG': [undefined, '₲', 0],\n  'RON': [undefined, 'lei'],\n  'RSD': [undefined, undefined, 0],\n  'RUB': [undefined, '₽'],\n  'RUR': [undefined, 'р.'],\n  'RWF': [undefined, 'RF', 0],\n  'SBD': [undefined, '$'],\n  'SEK': [undefined, 'kr', 2],\n  'SGD': [undefined, '$'],\n  'SHP': [undefined, '£'],\n  'SLL': [undefined, undefined, 0],\n  'SOS': [undefined, undefined, 0],\n  'SRD': [undefined, '$'],\n  'SSP': [undefined, '£'],\n  'STD': [undefined, undefined, 0],\n  'STN': [undefined, 'Db'],\n  'SYP': [undefined, '£', 0],\n  'THB': [undefined, '฿'],\n  'TMM': [undefined, undefined, 0],\n  'TND': [undefined, undefined, 3],\n  'TOP': [undefined, 'T$'],\n  'TRL': [undefined, undefined, 0],\n  'TRY': [undefined, '₺'],\n  'TTD': [undefined, '$'],\n  'TWD': ['NT$', '$', 2],\n  'TZS': [undefined, undefined, 2],\n  'UAH': [undefined, '₴'],\n  'UGX': [undefined, undefined, 0],\n  'USD': ['$'],\n  'UYI': [undefined, undefined, 0],\n  'UYU': [undefined, '$'],\n  'UYW': [undefined, undefined, 4],\n  'UZS': [undefined, undefined, 2],\n  'VEF': [undefined, 'Bs', 2],\n  'VND': ['₫', undefined, 0],\n  'VUV': [undefined, undefined, 0],\n  'XAF': ['FCFA', undefined, 0],\n  'XCD': ['EC$', '$'],\n  'XOF': ['CFA', undefined, 0],\n  'XPF': ['CFPF', undefined, 0],\n  'XXX': ['¤'],\n  'YER': [undefined, undefined, 0],\n  'ZAR': [undefined, 'R'],\n  'ZMK': [undefined, undefined, 0],\n  'ZMW': [undefined, 'ZK'],\n  'ZWD': [undefined, undefined, 0]\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Format styles that can be used to represent numbers.\n * @see `getLocaleNumberFormat()`.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\nvar NumberFormatStyle;\n\n(function (NumberFormatStyle) {\n  NumberFormatStyle[NumberFormatStyle[\"Decimal\"] = 0] = \"Decimal\";\n  NumberFormatStyle[NumberFormatStyle[\"Percent\"] = 1] = \"Percent\";\n  NumberFormatStyle[NumberFormatStyle[\"Currency\"] = 2] = \"Currency\";\n  NumberFormatStyle[NumberFormatStyle[\"Scientific\"] = 3] = \"Scientific\";\n})(NumberFormatStyle || (NumberFormatStyle = {}));\n/**\n * Plurality cases used for translating plurals to different languages.\n *\n * @see `NgPlural`\n * @see `NgPluralCase`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nvar Plural;\n\n(function (Plural) {\n  Plural[Plural[\"Zero\"] = 0] = \"Zero\";\n  Plural[Plural[\"One\"] = 1] = \"One\";\n  Plural[Plural[\"Two\"] = 2] = \"Two\";\n  Plural[Plural[\"Few\"] = 3] = \"Few\";\n  Plural[Plural[\"Many\"] = 4] = \"Many\";\n  Plural[Plural[\"Other\"] = 5] = \"Other\";\n})(Plural || (Plural = {}));\n/**\n * Context-dependant translation forms for strings.\n * Typically the standalone version is for the nominative form of the word,\n * and the format version is used for the genitive case.\n * @see [CLDR website](http://cldr.unicode.org/translation/date-time-1/date-time#TOC-Standalone-vs.-Format-Styles)\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nvar FormStyle;\n\n(function (FormStyle) {\n  FormStyle[FormStyle[\"Format\"] = 0] = \"Format\";\n  FormStyle[FormStyle[\"Standalone\"] = 1] = \"Standalone\";\n})(FormStyle || (FormStyle = {}));\n/**\n * String widths available for translations.\n * The specific character widths are locale-specific.\n * Examples are given for the word \"Sunday\" in English.\n *\n * @publicApi\n */\n\n\nvar TranslationWidth;\n\n(function (TranslationWidth) {\n  /** 1 character for `en-US`. For example: 'S' */\n  TranslationWidth[TranslationWidth[\"Narrow\"] = 0] = \"Narrow\";\n  /** 3 characters for `en-US`. For example: 'Sun' */\n\n  TranslationWidth[TranslationWidth[\"Abbreviated\"] = 1] = \"Abbreviated\";\n  /** Full length for `en-US`. For example: \"Sunday\" */\n\n  TranslationWidth[TranslationWidth[\"Wide\"] = 2] = \"Wide\";\n  /** 2 characters for `en-US`, For example: \"Su\" */\n\n  TranslationWidth[TranslationWidth[\"Short\"] = 3] = \"Short\";\n})(TranslationWidth || (TranslationWidth = {}));\n/**\n * String widths available for date-time formats.\n * The specific character widths are locale-specific.\n * Examples are given for `en-US`.\n *\n * @see `getLocaleDateFormat()`\n * @see `getLocaleTimeFormat()``\n * @see `getLocaleDateTimeFormat()`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n * @publicApi\n */\n\n\nvar FormatWidth;\n\n(function (FormatWidth) {\n  /**\n   * For `en-US`, 'M/d/yy, h:mm a'`\n   * (Example: `6/15/15, 9:03 AM`)\n   */\n  FormatWidth[FormatWidth[\"Short\"] = 0] = \"Short\";\n  /**\n   * For `en-US`, `'MMM d, y, h:mm:ss a'`\n   * (Example: `Jun 15, 2015, 9:03:01 AM`)\n   */\n\n  FormatWidth[FormatWidth[\"Medium\"] = 1] = \"Medium\";\n  /**\n   * For `en-US`, `'MMMM d, y, h:mm:ss a z'`\n   * (Example: `June 15, 2015 at 9:03:01 AM GMT+1`)\n   */\n\n  FormatWidth[FormatWidth[\"Long\"] = 2] = \"Long\";\n  /**\n   * For `en-US`, `'EEEE, MMMM d, y, h:mm:ss a zzzz'`\n   * (Example: `Monday, June 15, 2015 at 9:03:01 AM GMT+01:00`)\n   */\n\n  FormatWidth[FormatWidth[\"Full\"] = 3] = \"Full\";\n})(FormatWidth || (FormatWidth = {}));\n/**\n * Symbols that can be used to replace placeholders in number patterns.\n * Examples are based on `en-US` values.\n *\n * @see `getLocaleNumberSymbol()`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nvar NumberSymbol;\n\n(function (NumberSymbol) {\n  /**\n   * Decimal separator.\n   * For `en-US`, the dot character.\n   * Example : 2,345`.`67\n   */\n  NumberSymbol[NumberSymbol[\"Decimal\"] = 0] = \"Decimal\";\n  /**\n   * Grouping separator, typically for thousands.\n   * For `en-US`, the comma character.\n   * Example: 2`,`345.67\n   */\n\n  NumberSymbol[NumberSymbol[\"Group\"] = 1] = \"Group\";\n  /**\n   * List-item separator.\n   * Example: \"one, two, and three\"\n   */\n\n  NumberSymbol[NumberSymbol[\"List\"] = 2] = \"List\";\n  /**\n   * Sign for percentage (out of 100).\n   * Example: 23.4%\n   */\n\n  NumberSymbol[NumberSymbol[\"PercentSign\"] = 3] = \"PercentSign\";\n  /**\n   * Sign for positive numbers.\n   * Example: +23\n   */\n\n  NumberSymbol[NumberSymbol[\"PlusSign\"] = 4] = \"PlusSign\";\n  /**\n   * Sign for negative numbers.\n   * Example: -23\n   */\n\n  NumberSymbol[NumberSymbol[\"MinusSign\"] = 5] = \"MinusSign\";\n  /**\n   * Computer notation for exponential value (n times a power of 10).\n   * Example: 1.2E3\n   */\n\n  NumberSymbol[NumberSymbol[\"Exponential\"] = 6] = \"Exponential\";\n  /**\n   * Human-readable format of exponential.\n   * Example: 1.2x103\n   */\n\n  NumberSymbol[NumberSymbol[\"SuperscriptingExponent\"] = 7] = \"SuperscriptingExponent\";\n  /**\n   * Sign for permille (out of 1000).\n   * Example: 23.4‰\n   */\n\n  NumberSymbol[NumberSymbol[\"PerMille\"] = 8] = \"PerMille\";\n  /**\n   * Infinity, can be used with plus and minus.\n   * Example: ∞, +∞, -∞\n   */\n\n  NumberSymbol[NumberSymbol[\"Infinity\"] = 9] = \"Infinity\";\n  /**\n   * Not a number.\n   * Example: NaN\n   */\n\n  NumberSymbol[NumberSymbol[\"NaN\"] = 10] = \"NaN\";\n  /**\n   * Symbol used between time units.\n   * Example: 10:52\n   */\n\n  NumberSymbol[NumberSymbol[\"TimeSeparator\"] = 11] = \"TimeSeparator\";\n  /**\n   * Decimal separator for currency values (fallback to `Decimal`).\n   * Example: $2,345.67\n   */\n\n  NumberSymbol[NumberSymbol[\"CurrencyDecimal\"] = 12] = \"CurrencyDecimal\";\n  /**\n   * Group separator for currency values (fallback to `Group`).\n   * Example: $2,345.67\n   */\n\n  NumberSymbol[NumberSymbol[\"CurrencyGroup\"] = 13] = \"CurrencyGroup\";\n})(NumberSymbol || (NumberSymbol = {}));\n/**\n * The value for each day of the week, based on the `en-US` locale\n *\n * @publicApi\n */\n\n\nvar WeekDay;\n\n(function (WeekDay) {\n  WeekDay[WeekDay[\"Sunday\"] = 0] = \"Sunday\";\n  WeekDay[WeekDay[\"Monday\"] = 1] = \"Monday\";\n  WeekDay[WeekDay[\"Tuesday\"] = 2] = \"Tuesday\";\n  WeekDay[WeekDay[\"Wednesday\"] = 3] = \"Wednesday\";\n  WeekDay[WeekDay[\"Thursday\"] = 4] = \"Thursday\";\n  WeekDay[WeekDay[\"Friday\"] = 5] = \"Friday\";\n  WeekDay[WeekDay[\"Saturday\"] = 6] = \"Saturday\";\n})(WeekDay || (WeekDay = {}));\n/**\n * Retrieves the locale ID from the currently loaded locale.\n * The loaded locale could be, for example, a global one rather than a regional one.\n * @param locale A locale code, such as `fr-FR`.\n * @returns The locale code. For example, `fr`.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction getLocaleId(locale) {\n  return ɵfindLocaleData(locale)[ɵLocaleDataIndex.LocaleId];\n}\n/**\n * Retrieves day period strings for the given locale.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param formStyle The required grammatical form.\n * @param width The required character width.\n * @returns An array of localized period strings. For example, `[AM, PM]` for `en-US`.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction getLocaleDayPeriods(locale, formStyle, width) {\n  var data = ɵfindLocaleData(locale);\n  var amPmData = [data[ɵLocaleDataIndex.DayPeriodsFormat], data[ɵLocaleDataIndex.DayPeriodsStandalone]];\n  var amPm = getLastDefinedValue(amPmData, formStyle);\n  return getLastDefinedValue(amPm, width);\n}\n/**\n * Retrieves days of the week for the given locale, using the Gregorian calendar.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param formStyle The required grammatical form.\n * @param width The required character width.\n * @returns An array of localized name strings.\n * For example,`[Sunday, Monday, ... Saturday]` for `en-US`.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction getLocaleDayNames(locale, formStyle, width) {\n  var data = ɵfindLocaleData(locale);\n  var daysData = [data[ɵLocaleDataIndex.DaysFormat], data[ɵLocaleDataIndex.DaysStandalone]];\n  var days = getLastDefinedValue(daysData, formStyle);\n  return getLastDefinedValue(days, width);\n}\n/**\n * Retrieves months of the year for the given locale, using the Gregorian calendar.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param formStyle The required grammatical form.\n * @param width The required character width.\n * @returns An array of localized name strings.\n * For example,  `[January, February, ...]` for `en-US`.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction getLocaleMonthNames(locale, formStyle, width) {\n  var data = ɵfindLocaleData(locale);\n  var monthsData = [data[ɵLocaleDataIndex.MonthsFormat], data[ɵLocaleDataIndex.MonthsStandalone]];\n  var months = getLastDefinedValue(monthsData, formStyle);\n  return getLastDefinedValue(months, width);\n}\n/**\n * Retrieves Gregorian-calendar eras for the given locale.\n * @param locale A locale code for the locale format rules to use.\n * @param width The required character width.\n\n * @returns An array of localized era strings.\n * For example, `[AD, BC]` for `en-US`.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction getLocaleEraNames(locale, width) {\n  var data = ɵfindLocaleData(locale);\n  var erasData = data[ɵLocaleDataIndex.Eras];\n  return getLastDefinedValue(erasData, width);\n}\n/**\n * Retrieves the first day of the week for the given locale.\n *\n * @param locale A locale code for the locale format rules to use.\n * @returns A day index number, using the 0-based week-day index for `en-US`\n * (Sunday = 0, Monday = 1, ...).\n * For example, for `fr-FR`, returns 1 to indicate that the first day is Monday.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction getLocaleFirstDayOfWeek(locale) {\n  var data = ɵfindLocaleData(locale);\n  return data[ɵLocaleDataIndex.FirstDayOfWeek];\n}\n/**\n * Range of week days that are considered the week-end for the given locale.\n *\n * @param locale A locale code for the locale format rules to use.\n * @returns The range of day values, `[startDay, endDay]`.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction getLocaleWeekEndRange(locale) {\n  var data = ɵfindLocaleData(locale);\n  return data[ɵLocaleDataIndex.WeekendRange];\n}\n/**\n * Retrieves a localized date-value formating string.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param width The format type.\n * @returns The localized formating string.\n * @see `FormatWidth`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction getLocaleDateFormat(locale, width) {\n  var data = ɵfindLocaleData(locale);\n  return getLastDefinedValue(data[ɵLocaleDataIndex.DateFormat], width);\n}\n/**\n * Retrieves a localized time-value formatting string.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param width The format type.\n * @returns The localized formatting string.\n * @see `FormatWidth`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n\n * @publicApi\n */\n\n\nfunction getLocaleTimeFormat(locale, width) {\n  var data = ɵfindLocaleData(locale);\n  return getLastDefinedValue(data[ɵLocaleDataIndex.TimeFormat], width);\n}\n/**\n * Retrieves a localized date-time formatting string.\n *\n * @param locale A locale code for the locale format rules to use.\n * @param width The format type.\n * @returns The localized formatting string.\n * @see `FormatWidth`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction getLocaleDateTimeFormat(locale, width) {\n  var data = ɵfindLocaleData(locale);\n  var dateTimeFormatData = data[ɵLocaleDataIndex.DateTimeFormat];\n  return getLastDefinedValue(dateTimeFormatData, width);\n}\n/**\n * Retrieves a localized number symbol that can be used to replace placeholders in number formats.\n * @param locale The locale code.\n * @param symbol The symbol to localize.\n * @returns The character for the localized symbol.\n * @see `NumberSymbol`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction getLocaleNumberSymbol(locale, symbol) {\n  var data = ɵfindLocaleData(locale);\n  var res = data[ɵLocaleDataIndex.NumberSymbols][symbol];\n\n  if (typeof res === 'undefined') {\n    if (symbol === NumberSymbol.CurrencyDecimal) {\n      return data[ɵLocaleDataIndex.NumberSymbols][NumberSymbol.Decimal];\n    } else if (symbol === NumberSymbol.CurrencyGroup) {\n      return data[ɵLocaleDataIndex.NumberSymbols][NumberSymbol.Group];\n    }\n  }\n\n  return res;\n}\n/**\n * Retrieves a number format for a given locale.\n *\n * Numbers are formatted using patterns, like `#,###.00`. For example, the pattern `#,###.00`\n * when used to format the number 12345.678 could result in \"12'345,678\". That would happen if the\n * grouping separator for your language is an apostrophe, and the decimal separator is a comma.\n *\n * <b>Important:</b> The characters `.` `,` `0` `#` (and others below) are special placeholders\n * that stand for the decimal separator, and so on, and are NOT real characters.\n * You must NOT \"translate\" the placeholders. For example, don't change `.` to `,` even though in\n * your language the decimal point is written with a comma. The symbols should be replaced by the\n * local equivalents, using the appropriate `NumberSymbol` for your language.\n *\n * Here are the special characters used in number patterns:\n *\n * | Symbol | Meaning |\n * |--------|---------|\n * | . | Replaced automatically by the character used for the decimal point. |\n * | , | Replaced by the \"grouping\" (thousands) separator. |\n * | 0 | Replaced by a digit (or zero if there aren't enough digits). |\n * | # | Replaced by a digit (or nothing if there aren't enough). |\n * | ¤ | Replaced by a currency symbol, such as $ or USD. |\n * | % | Marks a percent format. The % symbol may change position, but must be retained. |\n * | E | Marks a scientific format. The E symbol may change position, but must be retained. |\n * | ' | Special characters used as literal characters are quoted with ASCII single quotes. |\n *\n * @param locale A locale code for the locale format rules to use.\n * @param type The type of numeric value to be formatted (such as `Decimal` or `Currency`.)\n * @returns The localized format string.\n * @see `NumberFormatStyle`\n * @see [CLDR website](http://cldr.unicode.org/translation/number-patterns)\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction getLocaleNumberFormat(locale, type) {\n  var data = ɵfindLocaleData(locale);\n  return data[ɵLocaleDataIndex.NumberFormats][type];\n}\n/**\n * Retrieves the symbol used to represent the currency for the main country\n * corresponding to a given locale. For example, '$' for `en-US`.\n *\n * @param locale A locale code for the locale format rules to use.\n * @returns The localized symbol character,\n * or `null` if the main country cannot be determined.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction getLocaleCurrencySymbol(locale) {\n  var data = ɵfindLocaleData(locale);\n  return data[ɵLocaleDataIndex.CurrencySymbol] || null;\n}\n/**\n * Retrieves the name of the currency for the main country corresponding\n * to a given locale. For example, 'US Dollar' for `en-US`.\n * @param locale A locale code for the locale format rules to use.\n * @returns The currency name,\n * or `null` if the main country cannot be determined.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction getLocaleCurrencyName(locale) {\n  var data = ɵfindLocaleData(locale);\n  return data[ɵLocaleDataIndex.CurrencyName] || null;\n}\n/**\n * Retrieves the default currency code for the given locale.\n *\n * The default is defined as the first currency which is still in use.\n *\n * @param locale The code of the locale whose currency code we want.\n * @returns The code of the default currency for the given locale.\n *\n * @publicApi\n */\n\n\nfunction getLocaleCurrencyCode(locale) {\n  return ɵgetLocaleCurrencyCode(locale);\n}\n/**\n * Retrieves the currency values for a given locale.\n * @param locale A locale code for the locale format rules to use.\n * @returns The currency values.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n */\n\n\nfunction getLocaleCurrencies(locale) {\n  var data = ɵfindLocaleData(locale);\n  return data[ɵLocaleDataIndex.Currencies];\n}\n/**\n * @alias core/ɵgetLocalePluralCase\n * @publicApi\n */\n\n\nvar getLocalePluralCase = ɵgetLocalePluralCase;\n\nfunction checkFullData(data) {\n  if (!data[ɵLocaleDataIndex.ExtraData]) {\n    throw new Error(\"Missing extra locale data for the locale \\\"\".concat(data[ɵLocaleDataIndex.LocaleId], \"\\\". Use \\\"registerLocaleData\\\" to load new data. See the \\\"I18n guide\\\" on angular.io to know more.\"));\n  }\n}\n/**\n * Retrieves locale-specific rules used to determine which day period to use\n * when more than one period is defined for a locale.\n *\n * There is a rule for each defined day period. The\n * first rule is applied to the first day period and so on.\n * Fall back to AM/PM when no rules are available.\n *\n * A rule can specify a period as time range, or as a single time value.\n *\n * This functionality is only available when you have loaded the full locale data.\n * See the [\"I18n guide\"](guide/i18n#i18n-pipes).\n *\n * @param locale A locale code for the locale format rules to use.\n * @returns The rules for the locale, a single time value or array of *from-time, to-time*,\n * or null if no periods are available.\n *\n * @see `getLocaleExtraDayPeriods()`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction getLocaleExtraDayPeriodRules(locale) {\n  var data = ɵfindLocaleData(locale);\n  checkFullData(data);\n  var rules = data[ɵLocaleDataIndex.ExtraData][2\n  /* ExtraDayPeriodsRules */\n  ] || [];\n  return rules.map(function (rule) {\n    if (typeof rule === 'string') {\n      return extractTime(rule);\n    }\n\n    return [extractTime(rule[0]), extractTime(rule[1])];\n  });\n}\n/**\n * Retrieves locale-specific day periods, which indicate roughly how a day is broken up\n * in different languages.\n * For example, for `en-US`, periods are morning, noon, afternoon, evening, and midnight.\n *\n * This functionality is only available when you have loaded the full locale data.\n * See the [\"I18n guide\"](guide/i18n#i18n-pipes).\n *\n * @param locale A locale code for the locale format rules to use.\n * @param formStyle The required grammatical form.\n * @param width The required character width.\n * @returns The translated day-period strings.\n * @see `getLocaleExtraDayPeriodRules()`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction getLocaleExtraDayPeriods(locale, formStyle, width) {\n  var data = ɵfindLocaleData(locale);\n  checkFullData(data);\n  var dayPeriodsData = [data[ɵLocaleDataIndex.ExtraData][0\n  /* ExtraDayPeriodFormats */\n  ], data[ɵLocaleDataIndex.ExtraData][1\n  /* ExtraDayPeriodStandalone */\n  ]];\n  var dayPeriods = getLastDefinedValue(dayPeriodsData, formStyle) || [];\n  return getLastDefinedValue(dayPeriods, width) || [];\n}\n/**\n * Retrieves the writing direction of a specified locale\n * @param locale A locale code for the locale format rules to use.\n * @publicApi\n * @returns 'rtl' or 'ltr'\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n */\n\n\nfunction getLocaleDirection(locale) {\n  var data = ɵfindLocaleData(locale);\n  return data[ɵLocaleDataIndex.Directionality];\n}\n/**\n * Retrieves the first value that is defined in an array, going backwards from an index position.\n *\n * To avoid repeating the same data (as when the \"format\" and \"standalone\" forms are the same)\n * add the first value to the locale data arrays, and add other values only if they are different.\n *\n * @param data The data array to retrieve from.\n * @param index A 0-based index into the array to start from.\n * @returns The value immediately before the given index position.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction getLastDefinedValue(data, index) {\n  for (var i = index; i > -1; i--) {\n    if (typeof data[i] !== 'undefined') {\n      return data[i];\n    }\n  }\n\n  throw new Error('Locale data API: locale data undefined');\n}\n/**\n * Extracts the hours and minutes from a string like \"15:45\"\n */\n\n\nfunction extractTime(time) {\n  var _time$split = time.split(':'),\n      _time$split2 = _slicedToArray(_time$split, 2),\n      h = _time$split2[0],\n      m = _time$split2[1];\n\n  return {\n    hours: +h,\n    minutes: +m\n  };\n}\n/**\n * Retrieves the currency symbol for a given currency code.\n *\n * For example, for the default `en-US` locale, the code `USD` can\n * be represented by the narrow symbol `$` or the wide symbol `US$`.\n *\n * @param code The currency code.\n * @param format The format, `wide` or `narrow`.\n * @param locale A locale code for the locale format rules to use.\n *\n * @returns The symbol, or the currency code if no symbol is available.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction getCurrencySymbol(code, format) {\n  var locale = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 'en';\n  var currency = getLocaleCurrencies(locale)[code] || CURRENCIES_EN[code] || [];\n  var symbolNarrow = currency[1\n  /* SymbolNarrow */\n  ];\n\n  if (format === 'narrow' && typeof symbolNarrow === 'string') {\n    return symbolNarrow;\n  }\n\n  return currency[0\n  /* Symbol */\n  ] || code;\n} // Most currencies have cents, that's why the default is 2\n\n\nvar DEFAULT_NB_OF_CURRENCY_DIGITS = 2;\n/**\n * Reports the number of decimal digits for a given currency.\n * The value depends upon the presence of cents in that particular currency.\n *\n * @param code The currency code.\n * @returns The number of decimal digits, typically 0 or 2.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\nfunction getNumberOfCurrencyDigits(code) {\n  var digits;\n  var currency = CURRENCIES_EN[code];\n\n  if (currency) {\n    digits = currency[2\n    /* NbOfDigits */\n    ];\n  }\n\n  return typeof digits === 'number' ? digits : DEFAULT_NB_OF_CURRENCY_DIGITS;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ISO8601_DATE_REGEX = /^(\\d{4})-?(\\d\\d)-?(\\d\\d)(?:T(\\d\\d)(?::?(\\d\\d)(?::?(\\d\\d)(?:\\.(\\d+))?)?)?(Z|([+-])(\\d\\d):?(\\d\\d))?)?$/; //    1        2       3         4          5          6          7          8  9     10      11\n\nvar NAMED_FORMATS = {};\nvar DATE_FORMATS_SPLIT = /((?:[^GyYMLwWdEabBhHmsSzZO']+)|(?:'(?:[^']|'')*')|(?:G{1,5}|y{1,4}|Y{1,4}|M{1,5}|L{1,5}|w{1,2}|W{1}|d{1,2}|E{1,6}|a{1,5}|b{1,5}|B{1,5}|h{1,2}|H{1,2}|m{1,2}|s{1,2}|S{1,3}|z{1,4}|Z{1,5}|O{1,4}))([\\s\\S]*)/;\nvar ZoneWidth;\n\n(function (ZoneWidth) {\n  ZoneWidth[ZoneWidth[\"Short\"] = 0] = \"Short\";\n  ZoneWidth[ZoneWidth[\"ShortGMT\"] = 1] = \"ShortGMT\";\n  ZoneWidth[ZoneWidth[\"Long\"] = 2] = \"Long\";\n  ZoneWidth[ZoneWidth[\"Extended\"] = 3] = \"Extended\";\n})(ZoneWidth || (ZoneWidth = {}));\n\nvar DateType;\n\n(function (DateType) {\n  DateType[DateType[\"FullYear\"] = 0] = \"FullYear\";\n  DateType[DateType[\"Month\"] = 1] = \"Month\";\n  DateType[DateType[\"Date\"] = 2] = \"Date\";\n  DateType[DateType[\"Hours\"] = 3] = \"Hours\";\n  DateType[DateType[\"Minutes\"] = 4] = \"Minutes\";\n  DateType[DateType[\"Seconds\"] = 5] = \"Seconds\";\n  DateType[DateType[\"FractionalSeconds\"] = 6] = \"FractionalSeconds\";\n  DateType[DateType[\"Day\"] = 7] = \"Day\";\n})(DateType || (DateType = {}));\n\nvar TranslationType;\n\n(function (TranslationType) {\n  TranslationType[TranslationType[\"DayPeriods\"] = 0] = \"DayPeriods\";\n  TranslationType[TranslationType[\"Days\"] = 1] = \"Days\";\n  TranslationType[TranslationType[\"Months\"] = 2] = \"Months\";\n  TranslationType[TranslationType[\"Eras\"] = 3] = \"Eras\";\n})(TranslationType || (TranslationType = {}));\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a date according to locale rules.\n *\n * @param value The date to format, as a Date, or a number (milliseconds since UTC epoch)\n * or an [ISO date-time string](https://www.w3.org/TR/NOTE-datetime).\n * @param format The date-time components to include. See `DatePipe` for details.\n * @param locale A locale code for the locale format rules to use.\n * @param timezone The time zone. A time zone offset from GMT (such as `'+0430'`),\n * or a standard UTC/GMT or continental US time zone abbreviation.\n * If not specified, uses host system settings.\n *\n * @returns The formatted date string.\n *\n * @see `DatePipe`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction formatDate(value, format, locale, timezone) {\n  var date = toDate(value);\n  var namedFormat = getNamedFormat(locale, format);\n  format = namedFormat || format;\n  var parts = [];\n  var match;\n\n  while (format) {\n    match = DATE_FORMATS_SPLIT.exec(format);\n\n    if (match) {\n      parts = parts.concat(match.slice(1));\n      var part = parts.pop();\n\n      if (!part) {\n        break;\n      }\n\n      format = part;\n    } else {\n      parts.push(format);\n      break;\n    }\n  }\n\n  var dateTimezoneOffset = date.getTimezoneOffset();\n\n  if (timezone) {\n    dateTimezoneOffset = timezoneToOffset(timezone, dateTimezoneOffset);\n    date = convertTimezoneToLocal(date, timezone, true);\n  }\n\n  var text = '';\n  parts.forEach(function (value) {\n    var dateFormatter = getDateFormatter(value);\n    text += dateFormatter ? dateFormatter(date, locale, dateTimezoneOffset) : value === '\\'\\'' ? '\\'' : value.replace(/(^'|'$)/g, '').replace(/''/g, '\\'');\n  });\n  return text;\n}\n\nfunction getNamedFormat(locale, format) {\n  var localeId = getLocaleId(locale);\n  NAMED_FORMATS[localeId] = NAMED_FORMATS[localeId] || {};\n\n  if (NAMED_FORMATS[localeId][format]) {\n    return NAMED_FORMATS[localeId][format];\n  }\n\n  var formatValue = '';\n\n  switch (format) {\n    case 'shortDate':\n      formatValue = getLocaleDateFormat(locale, FormatWidth.Short);\n      break;\n\n    case 'mediumDate':\n      formatValue = getLocaleDateFormat(locale, FormatWidth.Medium);\n      break;\n\n    case 'longDate':\n      formatValue = getLocaleDateFormat(locale, FormatWidth.Long);\n      break;\n\n    case 'fullDate':\n      formatValue = getLocaleDateFormat(locale, FormatWidth.Full);\n      break;\n\n    case 'shortTime':\n      formatValue = getLocaleTimeFormat(locale, FormatWidth.Short);\n      break;\n\n    case 'mediumTime':\n      formatValue = getLocaleTimeFormat(locale, FormatWidth.Medium);\n      break;\n\n    case 'longTime':\n      formatValue = getLocaleTimeFormat(locale, FormatWidth.Long);\n      break;\n\n    case 'fullTime':\n      formatValue = getLocaleTimeFormat(locale, FormatWidth.Full);\n      break;\n\n    case 'short':\n      var shortTime = getNamedFormat(locale, 'shortTime');\n      var shortDate = getNamedFormat(locale, 'shortDate');\n      formatValue = formatDateTime(getLocaleDateTimeFormat(locale, FormatWidth.Short), [shortTime, shortDate]);\n      break;\n\n    case 'medium':\n      var mediumTime = getNamedFormat(locale, 'mediumTime');\n      var mediumDate = getNamedFormat(locale, 'mediumDate');\n      formatValue = formatDateTime(getLocaleDateTimeFormat(locale, FormatWidth.Medium), [mediumTime, mediumDate]);\n      break;\n\n    case 'long':\n      var longTime = getNamedFormat(locale, 'longTime');\n      var longDate = getNamedFormat(locale, 'longDate');\n      formatValue = formatDateTime(getLocaleDateTimeFormat(locale, FormatWidth.Long), [longTime, longDate]);\n      break;\n\n    case 'full':\n      var fullTime = getNamedFormat(locale, 'fullTime');\n      var fullDate = getNamedFormat(locale, 'fullDate');\n      formatValue = formatDateTime(getLocaleDateTimeFormat(locale, FormatWidth.Full), [fullTime, fullDate]);\n      break;\n  }\n\n  if (formatValue) {\n    NAMED_FORMATS[localeId][format] = formatValue;\n  }\n\n  return formatValue;\n}\n\nfunction formatDateTime(str, opt_values) {\n  if (opt_values) {\n    str = str.replace(/\\{([^}]+)}/g, function (match, key) {\n      return opt_values != null && key in opt_values ? opt_values[key] : match;\n    });\n  }\n\n  return str;\n}\n\nfunction padNumber(num, digits) {\n  var minusSign = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : '-';\n  var trim = arguments.length > 3 ? arguments[3] : undefined;\n  var negWrap = arguments.length > 4 ? arguments[4] : undefined;\n  var neg = '';\n\n  if (num < 0 || negWrap && num <= 0) {\n    if (negWrap) {\n      num = -num + 1;\n    } else {\n      num = -num;\n      neg = minusSign;\n    }\n  }\n\n  var strNum = String(num);\n\n  while (strNum.length < digits) {\n    strNum = '0' + strNum;\n  }\n\n  if (trim) {\n    strNum = strNum.substr(strNum.length - digits);\n  }\n\n  return neg + strNum;\n}\n\nfunction formatFractionalSeconds(milliseconds, digits) {\n  var strMs = padNumber(milliseconds, 3);\n  return strMs.substr(0, digits);\n}\n/**\n * Returns a date formatter that transforms a date into its locale digit representation\n */\n\n\nfunction dateGetter(name, size) {\n  var offset = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;\n  var trim = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;\n  var negWrap = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : false;\n  return function (date, locale) {\n    var part = getDatePart(name, date);\n\n    if (offset > 0 || part > -offset) {\n      part += offset;\n    }\n\n    if (name === DateType.Hours) {\n      if (part === 0 && offset === -12) {\n        part = 12;\n      }\n    } else if (name === DateType.FractionalSeconds) {\n      return formatFractionalSeconds(part, size);\n    }\n\n    var localeMinus = getLocaleNumberSymbol(locale, NumberSymbol.MinusSign);\n    return padNumber(part, size, localeMinus, trim, negWrap);\n  };\n}\n\nfunction getDatePart(part, date) {\n  switch (part) {\n    case DateType.FullYear:\n      return date.getFullYear();\n\n    case DateType.Month:\n      return date.getMonth();\n\n    case DateType.Date:\n      return date.getDate();\n\n    case DateType.Hours:\n      return date.getHours();\n\n    case DateType.Minutes:\n      return date.getMinutes();\n\n    case DateType.Seconds:\n      return date.getSeconds();\n\n    case DateType.FractionalSeconds:\n      return date.getMilliseconds();\n\n    case DateType.Day:\n      return date.getDay();\n\n    default:\n      throw new Error(\"Unknown DateType value \\\"\".concat(part, \"\\\".\"));\n  }\n}\n/**\n * Returns a date formatter that transforms a date into its locale string representation\n */\n\n\nfunction dateStrGetter(name, width) {\n  var form = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : FormStyle.Format;\n  var extended = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;\n  return function (date, locale) {\n    return getDateTranslation(date, locale, name, width, form, extended);\n  };\n}\n/**\n * Returns the locale translation of a date for a given form, type and width\n */\n\n\nfunction getDateTranslation(date, locale, name, width, form, extended) {\n  switch (name) {\n    case TranslationType.Months:\n      return getLocaleMonthNames(locale, form, width)[date.getMonth()];\n\n    case TranslationType.Days:\n      return getLocaleDayNames(locale, form, width)[date.getDay()];\n\n    case TranslationType.DayPeriods:\n      var currentHours = date.getHours();\n      var currentMinutes = date.getMinutes();\n\n      if (extended) {\n        var rules = getLocaleExtraDayPeriodRules(locale);\n        var dayPeriods = getLocaleExtraDayPeriods(locale, form, width);\n        var index = rules.findIndex(function (rule) {\n          if (Array.isArray(rule)) {\n            // morning, afternoon, evening, night\n            var _rule = _slicedToArray(rule, 2),\n                from = _rule[0],\n                to = _rule[1];\n\n            var afterFrom = currentHours >= from.hours && currentMinutes >= from.minutes;\n            var beforeTo = currentHours < to.hours || currentHours === to.hours && currentMinutes < to.minutes; // We must account for normal rules that span a period during the day (e.g. 6am-9am)\n            // where `from` is less (earlier) than `to`. But also rules that span midnight (e.g.\n            // 10pm - 5am) where `from` is greater (later!) than `to`.\n            //\n            // In the first case the current time must be BOTH after `from` AND before `to`\n            // (e.g. 8am is after 6am AND before 10am).\n            //\n            // In the second case the current time must be EITHER after `from` OR before `to`\n            // (e.g. 4am is before 5am but not after 10pm; and 11pm is not before 5am but it is\n            // after 10pm).\n\n            if (from.hours < to.hours) {\n              if (afterFrom && beforeTo) {\n                return true;\n              }\n            } else if (afterFrom || beforeTo) {\n              return true;\n            }\n          } else {\n            // noon or midnight\n            if (rule.hours === currentHours && rule.minutes === currentMinutes) {\n              return true;\n            }\n          }\n\n          return false;\n        });\n\n        if (index !== -1) {\n          return dayPeriods[index];\n        }\n      } // if no rules for the day periods, we use am/pm by default\n\n\n      return getLocaleDayPeriods(locale, form, width)[currentHours < 12 ? 0 : 1];\n\n    case TranslationType.Eras:\n      return getLocaleEraNames(locale, width)[date.getFullYear() <= 0 ? 0 : 1];\n\n    default:\n      // This default case is not needed by TypeScript compiler, as the switch is exhaustive.\n      // However Closure Compiler does not understand that and reports an error in typed mode.\n      // The `throw new Error` below works around the problem, and the unexpected: never variable\n      // makes sure tsc still checks this code is unreachable.\n      var unexpected = name;\n      throw new Error(\"unexpected translation type \".concat(unexpected));\n  }\n}\n/**\n * Returns a date formatter that transforms a date and an offset into a timezone with ISO8601 or\n * GMT format depending on the width (eg: short = +0430, short:GMT = GMT+4, long = GMT+04:30,\n * extended = +04:30)\n */\n\n\nfunction timeZoneGetter(width) {\n  return function (date, locale, offset) {\n    var zone = -1 * offset;\n    var minusSign = getLocaleNumberSymbol(locale, NumberSymbol.MinusSign);\n    var hours = zone > 0 ? Math.floor(zone / 60) : Math.ceil(zone / 60);\n\n    switch (width) {\n      case ZoneWidth.Short:\n        return (zone >= 0 ? '+' : '') + padNumber(hours, 2, minusSign) + padNumber(Math.abs(zone % 60), 2, minusSign);\n\n      case ZoneWidth.ShortGMT:\n        return 'GMT' + (zone >= 0 ? '+' : '') + padNumber(hours, 1, minusSign);\n\n      case ZoneWidth.Long:\n        return 'GMT' + (zone >= 0 ? '+' : '') + padNumber(hours, 2, minusSign) + ':' + padNumber(Math.abs(zone % 60), 2, minusSign);\n\n      case ZoneWidth.Extended:\n        if (offset === 0) {\n          return 'Z';\n        } else {\n          return (zone >= 0 ? '+' : '') + padNumber(hours, 2, minusSign) + ':' + padNumber(Math.abs(zone % 60), 2, minusSign);\n        }\n\n      default:\n        throw new Error(\"Unknown zone width \\\"\".concat(width, \"\\\"\"));\n    }\n  };\n}\n\nvar JANUARY = 0;\nvar THURSDAY = 4;\n\nfunction getFirstThursdayOfYear(year) {\n  var firstDayOfYear = new Date(year, JANUARY, 1).getDay();\n  return new Date(year, 0, 1 + (firstDayOfYear <= THURSDAY ? THURSDAY : THURSDAY + 7) - firstDayOfYear);\n}\n\nfunction getThursdayThisWeek(datetime) {\n  return new Date(datetime.getFullYear(), datetime.getMonth(), datetime.getDate() + (THURSDAY - datetime.getDay()));\n}\n\nfunction weekGetter(size) {\n  var monthBased = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n  return function (date, locale) {\n    var result;\n\n    if (monthBased) {\n      var nbDaysBefore1stDayOfMonth = new Date(date.getFullYear(), date.getMonth(), 1).getDay() - 1;\n      var today = date.getDate();\n      result = 1 + Math.floor((today + nbDaysBefore1stDayOfMonth) / 7);\n    } else {\n      var thisThurs = getThursdayThisWeek(date); // Some days of a year are part of next year according to ISO 8601.\n      // Compute the firstThurs from the year of this week's Thursday\n\n      var firstThurs = getFirstThursdayOfYear(thisThurs.getFullYear());\n      var diff = thisThurs.getTime() - firstThurs.getTime();\n      result = 1 + Math.round(diff / 6.048e8); // 6.048e8 ms per week\n    }\n\n    return padNumber(result, size, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign));\n  };\n}\n/**\n * Returns a date formatter that provides the week-numbering year for the input date.\n */\n\n\nfunction weekNumberingYearGetter(size) {\n  var trim = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n  return function (date, locale) {\n    var thisThurs = getThursdayThisWeek(date);\n    var weekNumberingYear = thisThurs.getFullYear();\n    return padNumber(weekNumberingYear, size, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign), trim);\n  };\n}\n\nvar DATE_FORMATS = {}; // Based on CLDR formats:\n// See complete list: http://www.unicode.org/reports/tr35/tr35-dates.html#Date_Field_Symbol_Table\n// See also explanations: http://cldr.unicode.org/translation/date-time\n// TODO(ocombe): support all missing cldr formats: Y, U, Q, D, F, e, c, j, J, C, A, v, V, X, x\n\nfunction getDateFormatter(format) {\n  if (DATE_FORMATS[format]) {\n    return DATE_FORMATS[format];\n  }\n\n  var formatter;\n\n  switch (format) {\n    // Era name (AD/BC)\n    case 'G':\n    case 'GG':\n    case 'GGG':\n      formatter = dateStrGetter(TranslationType.Eras, TranslationWidth.Abbreviated);\n      break;\n\n    case 'GGGG':\n      formatter = dateStrGetter(TranslationType.Eras, TranslationWidth.Wide);\n      break;\n\n    case 'GGGGG':\n      formatter = dateStrGetter(TranslationType.Eras, TranslationWidth.Narrow);\n      break;\n    // 1 digit representation of the year, e.g. (AD 1 => 1, AD 199 => 199)\n\n    case 'y':\n      formatter = dateGetter(DateType.FullYear, 1, 0, false, true);\n      break;\n    // 2 digit representation of the year, padded (00-99). (e.g. AD 2001 => 01, AD 2010 => 10)\n\n    case 'yy':\n      formatter = dateGetter(DateType.FullYear, 2, 0, true, true);\n      break;\n    // 3 digit representation of the year, padded (000-999). (e.g. AD 2001 => 01, AD 2010 => 10)\n\n    case 'yyy':\n      formatter = dateGetter(DateType.FullYear, 3, 0, false, true);\n      break;\n    // 4 digit representation of the year (e.g. AD 1 => 0001, AD 2010 => 2010)\n\n    case 'yyyy':\n      formatter = dateGetter(DateType.FullYear, 4, 0, false, true);\n      break;\n    // 1 digit representation of the week-numbering year, e.g. (AD 1 => 1, AD 199 => 199)\n\n    case 'Y':\n      formatter = weekNumberingYearGetter(1);\n      break;\n    // 2 digit representation of the week-numbering year, padded (00-99). (e.g. AD 2001 => 01, AD\n    // 2010 => 10)\n\n    case 'YY':\n      formatter = weekNumberingYearGetter(2, true);\n      break;\n    // 3 digit representation of the week-numbering year, padded (000-999). (e.g. AD 1 => 001, AD\n    // 2010 => 2010)\n\n    case 'YYY':\n      formatter = weekNumberingYearGetter(3);\n      break;\n    // 4 digit representation of the week-numbering year (e.g. AD 1 => 0001, AD 2010 => 2010)\n\n    case 'YYYY':\n      formatter = weekNumberingYearGetter(4);\n      break;\n    // Month of the year (1-12), numeric\n\n    case 'M':\n    case 'L':\n      formatter = dateGetter(DateType.Month, 1, 1);\n      break;\n\n    case 'MM':\n    case 'LL':\n      formatter = dateGetter(DateType.Month, 2, 1);\n      break;\n    // Month of the year (January, ...), string, format\n\n    case 'MMM':\n      formatter = dateStrGetter(TranslationType.Months, TranslationWidth.Abbreviated);\n      break;\n\n    case 'MMMM':\n      formatter = dateStrGetter(TranslationType.Months, TranslationWidth.Wide);\n      break;\n\n    case 'MMMMM':\n      formatter = dateStrGetter(TranslationType.Months, TranslationWidth.Narrow);\n      break;\n    // Month of the year (January, ...), string, standalone\n\n    case 'LLL':\n      formatter = dateStrGetter(TranslationType.Months, TranslationWidth.Abbreviated, FormStyle.Standalone);\n      break;\n\n    case 'LLLL':\n      formatter = dateStrGetter(TranslationType.Months, TranslationWidth.Wide, FormStyle.Standalone);\n      break;\n\n    case 'LLLLL':\n      formatter = dateStrGetter(TranslationType.Months, TranslationWidth.Narrow, FormStyle.Standalone);\n      break;\n    // Week of the year (1, ... 52)\n\n    case 'w':\n      formatter = weekGetter(1);\n      break;\n\n    case 'ww':\n      formatter = weekGetter(2);\n      break;\n    // Week of the month (1, ...)\n\n    case 'W':\n      formatter = weekGetter(1, true);\n      break;\n    // Day of the month (1-31)\n\n    case 'd':\n      formatter = dateGetter(DateType.Date, 1);\n      break;\n\n    case 'dd':\n      formatter = dateGetter(DateType.Date, 2);\n      break;\n    // Day of the Week\n\n    case 'E':\n    case 'EE':\n    case 'EEE':\n      formatter = dateStrGetter(TranslationType.Days, TranslationWidth.Abbreviated);\n      break;\n\n    case 'EEEE':\n      formatter = dateStrGetter(TranslationType.Days, TranslationWidth.Wide);\n      break;\n\n    case 'EEEEE':\n      formatter = dateStrGetter(TranslationType.Days, TranslationWidth.Narrow);\n      break;\n\n    case 'EEEEEE':\n      formatter = dateStrGetter(TranslationType.Days, TranslationWidth.Short);\n      break;\n    // Generic period of the day (am-pm)\n\n    case 'a':\n    case 'aa':\n    case 'aaa':\n      formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Abbreviated);\n      break;\n\n    case 'aaaa':\n      formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Wide);\n      break;\n\n    case 'aaaaa':\n      formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Narrow);\n      break;\n    // Extended period of the day (midnight, at night, ...), standalone\n\n    case 'b':\n    case 'bb':\n    case 'bbb':\n      formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Abbreviated, FormStyle.Standalone, true);\n      break;\n\n    case 'bbbb':\n      formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Wide, FormStyle.Standalone, true);\n      break;\n\n    case 'bbbbb':\n      formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Narrow, FormStyle.Standalone, true);\n      break;\n    // Extended period of the day (midnight, night, ...), standalone\n\n    case 'B':\n    case 'BB':\n    case 'BBB':\n      formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Abbreviated, FormStyle.Format, true);\n      break;\n\n    case 'BBBB':\n      formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Wide, FormStyle.Format, true);\n      break;\n\n    case 'BBBBB':\n      formatter = dateStrGetter(TranslationType.DayPeriods, TranslationWidth.Narrow, FormStyle.Format, true);\n      break;\n    // Hour in AM/PM, (1-12)\n\n    case 'h':\n      formatter = dateGetter(DateType.Hours, 1, -12);\n      break;\n\n    case 'hh':\n      formatter = dateGetter(DateType.Hours, 2, -12);\n      break;\n    // Hour of the day (0-23)\n\n    case 'H':\n      formatter = dateGetter(DateType.Hours, 1);\n      break;\n    // Hour in day, padded (00-23)\n\n    case 'HH':\n      formatter = dateGetter(DateType.Hours, 2);\n      break;\n    // Minute of the hour (0-59)\n\n    case 'm':\n      formatter = dateGetter(DateType.Minutes, 1);\n      break;\n\n    case 'mm':\n      formatter = dateGetter(DateType.Minutes, 2);\n      break;\n    // Second of the minute (0-59)\n\n    case 's':\n      formatter = dateGetter(DateType.Seconds, 1);\n      break;\n\n    case 'ss':\n      formatter = dateGetter(DateType.Seconds, 2);\n      break;\n    // Fractional second\n\n    case 'S':\n      formatter = dateGetter(DateType.FractionalSeconds, 1);\n      break;\n\n    case 'SS':\n      formatter = dateGetter(DateType.FractionalSeconds, 2);\n      break;\n\n    case 'SSS':\n      formatter = dateGetter(DateType.FractionalSeconds, 3);\n      break;\n    // Timezone ISO8601 short format (-0430)\n\n    case 'Z':\n    case 'ZZ':\n    case 'ZZZ':\n      formatter = timeZoneGetter(ZoneWidth.Short);\n      break;\n    // Timezone ISO8601 extended format (-04:30)\n\n    case 'ZZZZZ':\n      formatter = timeZoneGetter(ZoneWidth.Extended);\n      break;\n    // Timezone GMT short format (GMT+4)\n\n    case 'O':\n    case 'OO':\n    case 'OOO': // Should be location, but fallback to format O instead because we don't have the data yet\n\n    case 'z':\n    case 'zz':\n    case 'zzz':\n      formatter = timeZoneGetter(ZoneWidth.ShortGMT);\n      break;\n    // Timezone GMT long format (GMT+0430)\n\n    case 'OOOO':\n    case 'ZZZZ': // Should be location, but fallback to format O instead because we don't have the data yet\n\n    case 'zzzz':\n      formatter = timeZoneGetter(ZoneWidth.Long);\n      break;\n\n    default:\n      return null;\n  }\n\n  DATE_FORMATS[format] = formatter;\n  return formatter;\n}\n\nfunction timezoneToOffset(timezone, fallback) {\n  // Support: IE 11 only, Edge 13-15+\n  // IE/Edge do not \"understand\" colon (`:`) in timezone\n  timezone = timezone.replace(/:/g, '');\n  var requestedTimezoneOffset = Date.parse('Jan 01, 1970 00:00:00 ' + timezone) / 60000;\n  return isNaN(requestedTimezoneOffset) ? fallback : requestedTimezoneOffset;\n}\n\nfunction addDateMinutes(date, minutes) {\n  date = new Date(date.getTime());\n  date.setMinutes(date.getMinutes() + minutes);\n  return date;\n}\n\nfunction convertTimezoneToLocal(date, timezone, reverse) {\n  var reverseValue = reverse ? -1 : 1;\n  var dateTimezoneOffset = date.getTimezoneOffset();\n  var timezoneOffset = timezoneToOffset(timezone, dateTimezoneOffset);\n  return addDateMinutes(date, reverseValue * (timezoneOffset - dateTimezoneOffset));\n}\n/**\n * Converts a value to date.\n *\n * Supported input formats:\n * - `Date`\n * - number: timestamp\n * - string: numeric (e.g. \"1234\"), ISO and date strings in a format supported by\n *   [Date.parse()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/parse).\n *   Note: ISO strings without time return a date without timeoffset.\n *\n * Throws if unable to convert to a date.\n */\n\n\nfunction toDate(value) {\n  if (isDate(value)) {\n    return value;\n  }\n\n  if (typeof value === 'number' && !isNaN(value)) {\n    return new Date(value);\n  }\n\n  if (typeof value === 'string') {\n    value = value.trim();\n    var parsedNb = parseFloat(value); // any string that only contains numbers, like \"1234\" but not like \"1234hello\"\n\n    if (!isNaN(value - parsedNb)) {\n      return new Date(parsedNb);\n    }\n\n    if (/^(\\d{4}-\\d{1,2}-\\d{1,2})$/.test(value)) {\n      /* For ISO Strings without time the day, month and year must be extracted from the ISO String\n      before Date creation to avoid time offset and errors in the new Date.\n      If we only replace '-' with ',' in the ISO String (\"2015,01,01\"), and try to create a new\n      date, some browsers (e.g. IE 9) will throw an invalid Date error.\n      If we leave the '-' (\"2015-01-01\") and try to create a new Date(\"2015-01-01\") the timeoffset\n      is applied.\n      Note: ISO months are 0 for January, 1 for February, ... */\n      var _value$split$map = value.split('-').map(function (val) {\n        return +val;\n      }),\n          _value$split$map2 = _slicedToArray(_value$split$map, 3),\n          y = _value$split$map2[0],\n          m = _value$split$map2[1],\n          d = _value$split$map2[2];\n\n      return new Date(y, m - 1, d);\n    }\n\n    var match;\n\n    if (match = value.match(ISO8601_DATE_REGEX)) {\n      return isoStringToDate(match);\n    }\n  }\n\n  var date = new Date(value);\n\n  if (!isDate(date)) {\n    throw new Error(\"Unable to convert \\\"\".concat(value, \"\\\" into a date\"));\n  }\n\n  return date;\n}\n/**\n * Converts a date in ISO8601 to a Date.\n * Used instead of `Date.parse` because of browser discrepancies.\n */\n\n\nfunction isoStringToDate(match) {\n  var date = new Date(0);\n  var tzHour = 0;\n  var tzMin = 0; // match[8] means that the string contains \"Z\" (UTC) or a timezone like \"+01:00\" or \"+0100\"\n\n  var dateSetter = match[8] ? date.setUTCFullYear : date.setFullYear;\n  var timeSetter = match[8] ? date.setUTCHours : date.setHours; // if there is a timezone defined like \"+01:00\" or \"+0100\"\n\n  if (match[9]) {\n    tzHour = Number(match[9] + match[10]);\n    tzMin = Number(match[9] + match[11]);\n  }\n\n  dateSetter.call(date, Number(match[1]), Number(match[2]) - 1, Number(match[3]));\n  var h = Number(match[4] || 0) - tzHour;\n  var m = Number(match[5] || 0) - tzMin;\n  var s = Number(match[6] || 0); // The ECMAScript specification (https://www.ecma-international.org/ecma-262/5.1/#sec-15.9.1.11)\n  // defines that `DateTime` milliseconds should always be rounded down, so that `999.9ms`\n  // becomes `999ms`.\n\n  var ms = Math.floor(parseFloat('0.' + (match[7] || 0)) * 1000);\n  timeSetter.call(date, h, m, s, ms);\n  return date;\n}\n\nfunction isDate(value) {\n  return value instanceof Date && !isNaN(value.valueOf());\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar NUMBER_FORMAT_REGEXP = /^(\\d+)?\\.((\\d+)(-(\\d+))?)?$/;\nvar MAX_DIGITS = 22;\nvar DECIMAL_SEP = '.';\nvar ZERO_CHAR = '0';\nvar PATTERN_SEP = ';';\nvar GROUP_SEP = ',';\nvar DIGIT_CHAR = '#';\nvar CURRENCY_CHAR = '¤';\nvar PERCENT_CHAR = '%';\n/**\n * Transforms a number to a locale string based on a style and a format.\n */\n\nfunction formatNumberToLocaleString(value, pattern, locale, groupSymbol, decimalSymbol, digitsInfo) {\n  var isPercent = arguments.length > 6 && arguments[6] !== undefined ? arguments[6] : false;\n  var formattedText = '';\n  var isZero = false;\n\n  if (!isFinite(value)) {\n    formattedText = getLocaleNumberSymbol(locale, NumberSymbol.Infinity);\n  } else {\n    var parsedNumber = parseNumber(value);\n\n    if (isPercent) {\n      parsedNumber = toPercent(parsedNumber);\n    }\n\n    var minInt = pattern.minInt;\n    var minFraction = pattern.minFrac;\n    var maxFraction = pattern.maxFrac;\n\n    if (digitsInfo) {\n      var parts = digitsInfo.match(NUMBER_FORMAT_REGEXP);\n\n      if (parts === null) {\n        throw new Error(\"\".concat(digitsInfo, \" is not a valid digit info\"));\n      }\n\n      var minIntPart = parts[1];\n      var minFractionPart = parts[3];\n      var maxFractionPart = parts[5];\n\n      if (minIntPart != null) {\n        minInt = parseIntAutoRadix(minIntPart);\n      }\n\n      if (minFractionPart != null) {\n        minFraction = parseIntAutoRadix(minFractionPart);\n      }\n\n      if (maxFractionPart != null) {\n        maxFraction = parseIntAutoRadix(maxFractionPart);\n      } else if (minFractionPart != null && minFraction > maxFraction) {\n        maxFraction = minFraction;\n      }\n    }\n\n    roundNumber(parsedNumber, minFraction, maxFraction);\n    var digits = parsedNumber.digits;\n    var integerLen = parsedNumber.integerLen;\n    var exponent = parsedNumber.exponent;\n    var decimals = [];\n    isZero = digits.every(function (d) {\n      return !d;\n    }); // pad zeros for small numbers\n\n    for (; integerLen < minInt; integerLen++) {\n      digits.unshift(0);\n    } // pad zeros for small numbers\n\n\n    for (; integerLen < 0; integerLen++) {\n      digits.unshift(0);\n    } // extract decimals digits\n\n\n    if (integerLen > 0) {\n      decimals = digits.splice(integerLen, digits.length);\n    } else {\n      decimals = digits;\n      digits = [0];\n    } // format the integer digits with grouping separators\n\n\n    var groups = [];\n\n    if (digits.length >= pattern.lgSize) {\n      groups.unshift(digits.splice(-pattern.lgSize, digits.length).join(''));\n    }\n\n    while (digits.length > pattern.gSize) {\n      groups.unshift(digits.splice(-pattern.gSize, digits.length).join(''));\n    }\n\n    if (digits.length) {\n      groups.unshift(digits.join(''));\n    }\n\n    formattedText = groups.join(getLocaleNumberSymbol(locale, groupSymbol)); // append the decimal digits\n\n    if (decimals.length) {\n      formattedText += getLocaleNumberSymbol(locale, decimalSymbol) + decimals.join('');\n    }\n\n    if (exponent) {\n      formattedText += getLocaleNumberSymbol(locale, NumberSymbol.Exponential) + '+' + exponent;\n    }\n  }\n\n  if (value < 0 && !isZero) {\n    formattedText = pattern.negPre + formattedText + pattern.negSuf;\n  } else {\n    formattedText = pattern.posPre + formattedText + pattern.posSuf;\n  }\n\n  return formattedText;\n}\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a number as currency using locale rules.\n *\n * @param value The number to format.\n * @param locale A locale code for the locale format rules to use.\n * @param currency A string containing the currency symbol or its name,\n * such as \"$\" or \"Canadian Dollar\". Used in output string, but does not affect the operation\n * of the function.\n * @param currencyCode The [ISO 4217](https://en.wikipedia.org/wiki/ISO_4217)\n * currency code, such as `USD` for the US dollar and `EUR` for the euro.\n * Used to determine the number of digits in the decimal part.\n * @param digitInfo Decimal representation options, specified by a string in the following format:\n * `{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}`. See `DecimalPipe` for more details.\n *\n * @returns The formatted currency value.\n *\n * @see `formatNumber()`\n * @see `DecimalPipe`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction formatCurrency(value, locale, currency, currencyCode, digitsInfo) {\n  var format = getLocaleNumberFormat(locale, NumberFormatStyle.Currency);\n  var pattern = parseNumberFormat(format, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign));\n  pattern.minFrac = getNumberOfCurrencyDigits(currencyCode);\n  pattern.maxFrac = pattern.minFrac;\n  var res = formatNumberToLocaleString(value, pattern, locale, NumberSymbol.CurrencyGroup, NumberSymbol.CurrencyDecimal, digitsInfo);\n  return res.replace(CURRENCY_CHAR, currency) // if we have 2 time the currency character, the second one is ignored\n  .replace(CURRENCY_CHAR, '') // If there is a spacing between currency character and the value and\n  // the currency character is supressed by passing an empty string, the\n  // spacing character would remain as part of the string. Then we\n  // should remove it.\n  .trim();\n}\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a number as a percentage according to locale rules.\n *\n * @param value The number to format.\n * @param locale A locale code for the locale format rules to use.\n * @param digitInfo Decimal representation options, specified by a string in the following format:\n * `{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}`. See `DecimalPipe` for more details.\n *\n * @returns The formatted percentage value.\n *\n * @see `formatNumber()`\n * @see `DecimalPipe`\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n * @publicApi\n *\n */\n\n\nfunction formatPercent(value, locale, digitsInfo) {\n  var format = getLocaleNumberFormat(locale, NumberFormatStyle.Percent);\n  var pattern = parseNumberFormat(format, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign));\n  var res = formatNumberToLocaleString(value, pattern, locale, NumberSymbol.Group, NumberSymbol.Decimal, digitsInfo, true);\n  return res.replace(new RegExp(PERCENT_CHAR, 'g'), getLocaleNumberSymbol(locale, NumberSymbol.PercentSign));\n}\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a number as text, with group sizing, separator, and other\n * parameters based on the locale.\n *\n * @param value The number to format.\n * @param locale A locale code for the locale format rules to use.\n * @param digitInfo Decimal representation options, specified by a string in the following format:\n * `{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}`. See `DecimalPipe` for more details.\n *\n * @returns The formatted text string.\n * @see [Internationalization (i18n) Guide](https://angular.io/guide/i18n)\n *\n * @publicApi\n */\n\n\nfunction formatNumber(value, locale, digitsInfo) {\n  var format = getLocaleNumberFormat(locale, NumberFormatStyle.Decimal);\n  var pattern = parseNumberFormat(format, getLocaleNumberSymbol(locale, NumberSymbol.MinusSign));\n  return formatNumberToLocaleString(value, pattern, locale, NumberSymbol.Group, NumberSymbol.Decimal, digitsInfo);\n}\n\nfunction parseNumberFormat(format) {\n  var minusSign = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '-';\n  var p = {\n    minInt: 1,\n    minFrac: 0,\n    maxFrac: 0,\n    posPre: '',\n    posSuf: '',\n    negPre: '',\n    negSuf: '',\n    gSize: 0,\n    lgSize: 0\n  };\n  var patternParts = format.split(PATTERN_SEP);\n  var positive = patternParts[0];\n  var negative = patternParts[1];\n  var positiveParts = positive.indexOf(DECIMAL_SEP) !== -1 ? positive.split(DECIMAL_SEP) : [positive.substring(0, positive.lastIndexOf(ZERO_CHAR) + 1), positive.substring(positive.lastIndexOf(ZERO_CHAR) + 1)],\n      integer = positiveParts[0],\n      fraction = positiveParts[1] || '';\n  p.posPre = integer.substr(0, integer.indexOf(DIGIT_CHAR));\n\n  for (var i = 0; i < fraction.length; i++) {\n    var ch = fraction.charAt(i);\n\n    if (ch === ZERO_CHAR) {\n      p.minFrac = p.maxFrac = i + 1;\n    } else if (ch === DIGIT_CHAR) {\n      p.maxFrac = i + 1;\n    } else {\n      p.posSuf += ch;\n    }\n  }\n\n  var groups = integer.split(GROUP_SEP);\n  p.gSize = groups[1] ? groups[1].length : 0;\n  p.lgSize = groups[2] || groups[1] ? (groups[2] || groups[1]).length : 0;\n\n  if (negative) {\n    var trunkLen = positive.length - p.posPre.length - p.posSuf.length,\n        pos = negative.indexOf(DIGIT_CHAR);\n    p.negPre = negative.substr(0, pos).replace(/'/g, '');\n    p.negSuf = negative.substr(pos + trunkLen).replace(/'/g, '');\n  } else {\n    p.negPre = minusSign + p.posPre;\n    p.negSuf = p.posSuf;\n  }\n\n  return p;\n} // Transforms a parsed number into a percentage by multiplying it by 100\n\n\nfunction toPercent(parsedNumber) {\n  // if the number is 0, don't do anything\n  if (parsedNumber.digits[0] === 0) {\n    return parsedNumber;\n  } // Getting the current number of decimals\n\n\n  var fractionLen = parsedNumber.digits.length - parsedNumber.integerLen;\n\n  if (parsedNumber.exponent) {\n    parsedNumber.exponent += 2;\n  } else {\n    if (fractionLen === 0) {\n      parsedNumber.digits.push(0, 0);\n    } else if (fractionLen === 1) {\n      parsedNumber.digits.push(0);\n    }\n\n    parsedNumber.integerLen += 2;\n  }\n\n  return parsedNumber;\n}\n/**\n * Parses a number.\n * Significant bits of this parse algorithm came from https://github.com/MikeMcl/big.js/\n */\n\n\nfunction parseNumber(num) {\n  var numStr = Math.abs(num) + '';\n  var exponent = 0,\n      digits,\n      integerLen;\n  var i, j, zeros; // Decimal point?\n\n  if ((integerLen = numStr.indexOf(DECIMAL_SEP)) > -1) {\n    numStr = numStr.replace(DECIMAL_SEP, '');\n  } // Exponential form?\n\n\n  if ((i = numStr.search(/e/i)) > 0) {\n    // Work out the exponent.\n    if (integerLen < 0) integerLen = i;\n    integerLen += +numStr.slice(i + 1);\n    numStr = numStr.substring(0, i);\n  } else if (integerLen < 0) {\n    // There was no decimal point or exponent so it is an integer.\n    integerLen = numStr.length;\n  } // Count the number of leading zeros.\n\n\n  for (i = 0; numStr.charAt(i) === ZERO_CHAR; i++) {\n    /* empty */\n  }\n\n  if (i === (zeros = numStr.length)) {\n    // The digits are all zero.\n    digits = [0];\n    integerLen = 1;\n  } else {\n    // Count the number of trailing zeros\n    zeros--;\n\n    while (numStr.charAt(zeros) === ZERO_CHAR) {\n      zeros--;\n    } // Trailing zeros are insignificant so ignore them\n\n\n    integerLen -= i;\n    digits = []; // Convert string to array of digits without leading/trailing zeros.\n\n    for (j = 0; i <= zeros; i++, j++) {\n      digits[j] = Number(numStr.charAt(i));\n    }\n  } // If the number overflows the maximum allowed digits then use an exponent.\n\n\n  if (integerLen > MAX_DIGITS) {\n    digits = digits.splice(0, MAX_DIGITS - 1);\n    exponent = integerLen - 1;\n    integerLen = 1;\n  }\n\n  return {\n    digits: digits,\n    exponent: exponent,\n    integerLen: integerLen\n  };\n}\n/**\n * Round the parsed number to the specified number of decimal places\n * This function changes the parsedNumber in-place\n */\n\n\nfunction roundNumber(parsedNumber, minFrac, maxFrac) {\n  if (minFrac > maxFrac) {\n    throw new Error(\"The minimum number of digits after fraction (\".concat(minFrac, \") is higher than the maximum (\").concat(maxFrac, \").\"));\n  }\n\n  var digits = parsedNumber.digits;\n  var fractionLen = digits.length - parsedNumber.integerLen;\n  var fractionSize = Math.min(Math.max(minFrac, fractionLen), maxFrac); // The index of the digit to where rounding is to occur\n\n  var roundAt = fractionSize + parsedNumber.integerLen;\n  var digit = digits[roundAt];\n\n  if (roundAt > 0) {\n    // Drop fractional digits beyond `roundAt`\n    digits.splice(Math.max(parsedNumber.integerLen, roundAt)); // Set non-fractional digits beyond `roundAt` to 0\n\n    for (var j = roundAt; j < digits.length; j++) {\n      digits[j] = 0;\n    }\n  } else {\n    // We rounded to zero so reset the parsedNumber\n    fractionLen = Math.max(0, fractionLen);\n    parsedNumber.integerLen = 1;\n    digits.length = Math.max(1, roundAt = fractionSize + 1);\n    digits[0] = 0;\n\n    for (var i = 1; i < roundAt; i++) {\n      digits[i] = 0;\n    }\n  }\n\n  if (digit >= 5) {\n    if (roundAt - 1 < 0) {\n      for (var k = 0; k > roundAt; k--) {\n        digits.unshift(0);\n        parsedNumber.integerLen++;\n      }\n\n      digits.unshift(1);\n      parsedNumber.integerLen++;\n    } else {\n      digits[roundAt - 1]++;\n    }\n  } // Pad out with zeros to get the required fraction length\n\n\n  for (; fractionLen < Math.max(0, fractionSize); fractionLen++) {\n    digits.push(0);\n  }\n\n  var dropTrailingZeros = fractionSize !== 0; // Minimal length = nb of decimals required + current nb of integers\n  // Any number besides that is optional and can be removed if it's a trailing 0\n\n  var minLen = minFrac + parsedNumber.integerLen; // Do any carrying, e.g. a digit was rounded up to 10\n\n  var carry = digits.reduceRight(function (carry, d, i, digits) {\n    d = d + carry;\n    digits[i] = d < 10 ? d : d - 10; // d % 10\n\n    if (dropTrailingZeros) {\n      // Do not keep meaningless fractional trailing zeros (e.g. 15.52000 --> 15.52)\n      if (digits[i] === 0 && i >= minLen) {\n        digits.pop();\n      } else {\n        dropTrailingZeros = false;\n      }\n    }\n\n    return d >= 10 ? 1 : 0; // Math.floor(d / 10);\n  }, 0);\n\n  if (carry) {\n    digits.unshift(carry);\n    parsedNumber.integerLen++;\n  }\n}\n\nfunction parseIntAutoRadix(text) {\n  var result = parseInt(text);\n\n  if (isNaN(result)) {\n    throw new Error('Invalid integer literal when parsing ' + text);\n  }\n\n  return result;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @publicApi\n */\n\n\nvar NgLocalization = /*#__PURE__*/_createClass(function NgLocalization() {\n  _classCallCheck(this, NgLocalization);\n});\n/**\n * Returns the plural category for a given value.\n * - \"=value\" when the case exists,\n * - the plural category otherwise\n */\n\n\nfunction getPluralCategory(value, cases, ngLocalization, locale) {\n  var key = \"=\".concat(value);\n\n  if (cases.indexOf(key) > -1) {\n    return key;\n  }\n\n  key = ngLocalization.getPluralCategory(value, locale);\n\n  if (cases.indexOf(key) > -1) {\n    return key;\n  }\n\n  if (cases.indexOf('other') > -1) {\n    return 'other';\n  }\n\n  throw new Error(\"No plural message found for value \\\"\".concat(value, \"\\\"\"));\n}\n/**\n * Returns the plural case based on the locale\n *\n * @publicApi\n */\n\n\nvar NgLocaleLocalization = /*#__PURE__*/function (_NgLocalization) {\n  _inherits(NgLocaleLocalization, _NgLocalization);\n\n  var _super4 = _createSuper(NgLocaleLocalization);\n\n  function NgLocaleLocalization(locale) {\n    var _this6;\n\n    _classCallCheck(this, NgLocaleLocalization);\n\n    _this6 = _super4.call(this);\n    _this6.locale = locale;\n    return _this6;\n  }\n\n  _createClass(NgLocaleLocalization, [{\n    key: \"getPluralCategory\",\n    value: function getPluralCategory(value, locale) {\n      var plural = getLocalePluralCase(locale || this.locale)(value);\n\n      switch (plural) {\n        case Plural.Zero:\n          return 'zero';\n\n        case Plural.One:\n          return 'one';\n\n        case Plural.Two:\n          return 'two';\n\n        case Plural.Few:\n          return 'few';\n\n        case Plural.Many:\n          return 'many';\n\n        default:\n          return 'other';\n      }\n    }\n  }]);\n\n  return NgLocaleLocalization;\n}(NgLocalization);\n\nNgLocaleLocalization.decorators = [{\n  type: Injectable\n}];\n\nNgLocaleLocalization.ctorParameters = function () {\n  return [{\n    type: String,\n    decorators: [{\n      type: Inject,\n      args: [LOCALE_ID]\n    }]\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Register global data to be used internally by Angular. See the\n * [\"I18n guide\"](guide/i18n#i18n-pipes) to know how to import additional locale data.\n *\n * The signature registerLocaleData(data: any, extraData?: any) is deprecated since v5.1\n *\n * @publicApi\n */\n\n\nfunction registerLocaleData(data, localeId, extraData) {\n  return ɵregisterLocaleData(data, localeId, extraData);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction parseCookieValue(cookieStr, name) {\n  name = encodeURIComponent(name);\n\n  var _iterator = _createForOfIteratorHelper(cookieStr.split(';')),\n      _step;\n\n  try {\n    for (_iterator.s(); !(_step = _iterator.n()).done;) {\n      var cookie = _step.value;\n      var eqIndex = cookie.indexOf('=');\n\n      var _ref2 = eqIndex == -1 ? [cookie, ''] : [cookie.slice(0, eqIndex), cookie.slice(eqIndex + 1)],\n          _ref3 = _slicedToArray(_ref2, 2),\n          cookieName = _ref3[0],\n          cookieValue = _ref3[1];\n\n      if (cookieName.trim() === name) {\n        return decodeURIComponent(cookieValue);\n      }\n    }\n  } catch (err) {\n    _iterator.e(err);\n  } finally {\n    _iterator.f();\n  }\n\n  return null;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @ngModule CommonModule\n *\n * @usageNotes\n * ```\n *     <some-element [ngClass]=\"'first second'\">...</some-element>\n *\n *     <some-element [ngClass]=\"['first', 'second']\">...</some-element>\n *\n *     <some-element [ngClass]=\"{'first': true, 'second': true, 'third': false}\">...</some-element>\n *\n *     <some-element [ngClass]=\"stringExp|arrayExp|objExp\">...</some-element>\n *\n *     <some-element [ngClass]=\"{'class1 class2 class3' : true}\">...</some-element>\n * ```\n *\n * @description\n *\n * Adds and removes CSS classes on an HTML element.\n *\n * The CSS classes are updated as follows, depending on the type of the expression evaluation:\n * - `string` - the CSS classes listed in the string (space delimited) are added,\n * - `Array` - the CSS classes declared as Array elements are added,\n * - `Object` - keys are CSS classes that get added when the expression given in the value\n *              evaluates to a truthy value, otherwise they are removed.\n *\n * @publicApi\n */\n\n\nvar NgClass = /*#__PURE__*/function () {\n  function NgClass(_iterableDiffers, _keyValueDiffers, _ngEl, _renderer) {\n    _classCallCheck(this, NgClass);\n\n    this._iterableDiffers = _iterableDiffers;\n    this._keyValueDiffers = _keyValueDiffers;\n    this._ngEl = _ngEl;\n    this._renderer = _renderer;\n    this._iterableDiffer = null;\n    this._keyValueDiffer = null;\n    this._initialClasses = [];\n    this._rawClass = null;\n  }\n\n  _createClass(NgClass, [{\n    key: \"klass\",\n    set: function set(value) {\n      this._removeClasses(this._initialClasses);\n\n      this._initialClasses = typeof value === 'string' ? value.split(/\\s+/) : [];\n\n      this._applyClasses(this._initialClasses);\n\n      this._applyClasses(this._rawClass);\n    }\n  }, {\n    key: \"ngClass\",\n    set: function set(value) {\n      this._removeClasses(this._rawClass);\n\n      this._applyClasses(this._initialClasses);\n\n      this._iterableDiffer = null;\n      this._keyValueDiffer = null;\n      this._rawClass = typeof value === 'string' ? value.split(/\\s+/) : value;\n\n      if (this._rawClass) {\n        if (ɵisListLikeIterable(this._rawClass)) {\n          this._iterableDiffer = this._iterableDiffers.find(this._rawClass).create();\n        } else {\n          this._keyValueDiffer = this._keyValueDiffers.find(this._rawClass).create();\n        }\n      }\n    }\n  }, {\n    key: \"ngDoCheck\",\n    value: function ngDoCheck() {\n      if (this._iterableDiffer) {\n        var iterableChanges = this._iterableDiffer.diff(this._rawClass);\n\n        if (iterableChanges) {\n          this._applyIterableChanges(iterableChanges);\n        }\n      } else if (this._keyValueDiffer) {\n        var keyValueChanges = this._keyValueDiffer.diff(this._rawClass);\n\n        if (keyValueChanges) {\n          this._applyKeyValueChanges(keyValueChanges);\n        }\n      }\n    }\n  }, {\n    key: \"_applyKeyValueChanges\",\n    value: function _applyKeyValueChanges(changes) {\n      var _this7 = this;\n\n      changes.forEachAddedItem(function (record) {\n        return _this7._toggleClass(record.key, record.currentValue);\n      });\n      changes.forEachChangedItem(function (record) {\n        return _this7._toggleClass(record.key, record.currentValue);\n      });\n      changes.forEachRemovedItem(function (record) {\n        if (record.previousValue) {\n          _this7._toggleClass(record.key, false);\n        }\n      });\n    }\n  }, {\n    key: \"_applyIterableChanges\",\n    value: function _applyIterableChanges(changes) {\n      var _this8 = this;\n\n      changes.forEachAddedItem(function (record) {\n        if (typeof record.item === 'string') {\n          _this8._toggleClass(record.item, true);\n        } else {\n          throw new Error(\"NgClass can only toggle CSS classes expressed as strings, got \".concat(ɵstringify(record.item)));\n        }\n      });\n      changes.forEachRemovedItem(function (record) {\n        return _this8._toggleClass(record.item, false);\n      });\n    }\n    /**\n     * Applies a collection of CSS classes to the DOM element.\n     *\n     * For argument of type Set and Array CSS class names contained in those collections are always\n     * added.\n     * For argument of type Map CSS class name in the map's key is toggled based on the value (added\n     * for truthy and removed for falsy).\n     */\n\n  }, {\n    key: \"_applyClasses\",\n    value: function _applyClasses(rawClassVal) {\n      var _this9 = this;\n\n      if (rawClassVal) {\n        if (Array.isArray(rawClassVal) || rawClassVal instanceof Set) {\n          rawClassVal.forEach(function (klass) {\n            return _this9._toggleClass(klass, true);\n          });\n        } else {\n          Object.keys(rawClassVal).forEach(function (klass) {\n            return _this9._toggleClass(klass, !!rawClassVal[klass]);\n          });\n        }\n      }\n    }\n    /**\n     * Removes a collection of CSS classes from the DOM element. This is mostly useful for cleanup\n     * purposes.\n     */\n\n  }, {\n    key: \"_removeClasses\",\n    value: function _removeClasses(rawClassVal) {\n      var _this10 = this;\n\n      if (rawClassVal) {\n        if (Array.isArray(rawClassVal) || rawClassVal instanceof Set) {\n          rawClassVal.forEach(function (klass) {\n            return _this10._toggleClass(klass, false);\n          });\n        } else {\n          Object.keys(rawClassVal).forEach(function (klass) {\n            return _this10._toggleClass(klass, false);\n          });\n        }\n      }\n    }\n  }, {\n    key: \"_toggleClass\",\n    value: function _toggleClass(klass, enabled) {\n      var _this11 = this;\n\n      klass = klass.trim();\n\n      if (klass) {\n        klass.split(/\\s+/g).forEach(function (klass) {\n          if (enabled) {\n            _this11._renderer.addClass(_this11._ngEl.nativeElement, klass);\n          } else {\n            _this11._renderer.removeClass(_this11._ngEl.nativeElement, klass);\n          }\n        });\n      }\n    }\n  }]);\n\n  return NgClass;\n}();\n\nNgClass.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[ngClass]'\n  }]\n}];\n\nNgClass.ctorParameters = function () {\n  return [{\n    type: IterableDiffers\n  }, {\n    type: KeyValueDiffers\n  }, {\n    type: ElementRef\n  }, {\n    type: Renderer2\n  }];\n};\n\nNgClass.propDecorators = {\n  klass: [{\n    type: Input,\n    args: ['class']\n  }],\n  ngClass: [{\n    type: Input,\n    args: ['ngClass']\n  }]\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Instantiates a single {@link Component} type and inserts its Host View into current View.\n * `NgComponentOutlet` provides a declarative approach for dynamic component creation.\n *\n * `NgComponentOutlet` requires a component type, if a falsy value is set the view will clear and\n * any existing component will get destroyed.\n *\n * @usageNotes\n *\n * ### Fine tune control\n *\n * You can control the component creation process by using the following optional attributes:\n *\n * * `ngComponentOutletInjector`: Optional custom {@link Injector} that will be used as parent for\n * the Component. Defaults to the injector of the current view container.\n *\n * * `ngComponentOutletContent`: Optional list of projectable nodes to insert into the content\n * section of the component, if exists.\n *\n * * `ngComponentOutletNgModuleFactory`: Optional module factory to allow dynamically loading other\n * module, then load a component from that module.\n *\n * ### Syntax\n *\n * Simple\n * ```\n * <ng-container *ngComponentOutlet=\"componentTypeExpression\"></ng-container>\n * ```\n *\n * Customized injector/content\n * ```\n * <ng-container *ngComponentOutlet=\"componentTypeExpression;\n *                                   injector: injectorExpression;\n *                                   content: contentNodesExpression;\">\n * </ng-container>\n * ```\n *\n * Customized ngModuleFactory\n * ```\n * <ng-container *ngComponentOutlet=\"componentTypeExpression;\n *                                   ngModuleFactory: moduleFactory;\">\n * </ng-container>\n * ```\n *\n * ### A simple example\n *\n * {@example common/ngComponentOutlet/ts/module.ts region='SimpleExample'}\n *\n * A more complete example with additional options:\n *\n * {@example common/ngComponentOutlet/ts/module.ts region='CompleteExample'}\n *\n * @publicApi\n * @ngModule CommonModule\n */\n\nvar NgComponentOutlet = /*#__PURE__*/function () {\n  function NgComponentOutlet(_viewContainerRef) {\n    _classCallCheck(this, NgComponentOutlet);\n\n    this._viewContainerRef = _viewContainerRef;\n    this._componentRef = null;\n    this._moduleRef = null;\n  }\n\n  _createClass(NgComponentOutlet, [{\n    key: \"ngOnChanges\",\n    value: function ngOnChanges(changes) {\n      this._viewContainerRef.clear();\n\n      this._componentRef = null;\n\n      if (this.ngComponentOutlet) {\n        var elInjector = this.ngComponentOutletInjector || this._viewContainerRef.parentInjector;\n\n        if (changes['ngComponentOutletNgModuleFactory']) {\n          if (this._moduleRef) this._moduleRef.destroy();\n\n          if (this.ngComponentOutletNgModuleFactory) {\n            var parentModule = elInjector.get(NgModuleRef);\n            this._moduleRef = this.ngComponentOutletNgModuleFactory.create(parentModule.injector);\n          } else {\n            this._moduleRef = null;\n          }\n        }\n\n        var componentFactoryResolver = this._moduleRef ? this._moduleRef.componentFactoryResolver : elInjector.get(ComponentFactoryResolver);\n        var componentFactory = componentFactoryResolver.resolveComponentFactory(this.ngComponentOutlet);\n        this._componentRef = this._viewContainerRef.createComponent(componentFactory, this._viewContainerRef.length, elInjector, this.ngComponentOutletContent);\n      }\n    }\n  }, {\n    key: \"ngOnDestroy\",\n    value: function ngOnDestroy() {\n      if (this._moduleRef) this._moduleRef.destroy();\n    }\n  }]);\n\n  return NgComponentOutlet;\n}();\n\nNgComponentOutlet.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[ngComponentOutlet]'\n  }]\n}];\n\nNgComponentOutlet.ctorParameters = function () {\n  return [{\n    type: ViewContainerRef\n  }];\n};\n\nNgComponentOutlet.propDecorators = {\n  ngComponentOutlet: [{\n    type: Input\n  }],\n  ngComponentOutletInjector: [{\n    type: Input\n  }],\n  ngComponentOutletContent: [{\n    type: Input\n  }],\n  ngComponentOutletNgModuleFactory: [{\n    type: Input\n  }]\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @publicApi\n */\n\nvar NgForOfContext = /*#__PURE__*/function () {\n  function NgForOfContext($implicit, ngForOf, index, count) {\n    _classCallCheck(this, NgForOfContext);\n\n    this.$implicit = $implicit;\n    this.ngForOf = ngForOf;\n    this.index = index;\n    this.count = count;\n  }\n\n  _createClass(NgForOfContext, [{\n    key: \"first\",\n    get: function get() {\n      return this.index === 0;\n    }\n  }, {\n    key: \"last\",\n    get: function get() {\n      return this.index === this.count - 1;\n    }\n  }, {\n    key: \"even\",\n    get: function get() {\n      return this.index % 2 === 0;\n    }\n  }, {\n    key: \"odd\",\n    get: function get() {\n      return !this.even;\n    }\n  }]);\n\n  return NgForOfContext;\n}();\n/**\n * A [structural directive](guide/structural-directives) that renders\n * a template for each item in a collection.\n * The directive is placed on an element, which becomes the parent\n * of the cloned templates.\n *\n * The `ngForOf` directive is generally used in the\n * [shorthand form](guide/structural-directives#the-asterisk--prefix) `*ngFor`.\n * In this form, the template to be rendered for each iteration is the content\n * of an anchor element containing the directive.\n *\n * The following example shows the shorthand syntax with some options,\n * contained in an `<li>` element.\n *\n * ```\n * <li *ngFor=\"let item of items; index as i; trackBy: trackByFn\">...</li>\n * ```\n *\n * The shorthand form expands into a long form that uses the `ngForOf` selector\n * on an `<ng-template>` element.\n * The content of the `<ng-template>` element is the `<li>` element that held the\n * short-form directive.\n *\n * Here is the expanded version of the short-form example.\n *\n * ```\n * <ng-template ngFor let-item [ngForOf]=\"items\" let-i=\"index\" [ngForTrackBy]=\"trackByFn\">\n *   <li>...</li>\n * </ng-template>\n * ```\n *\n * Angular automatically expands the shorthand syntax as it compiles the template.\n * The context for each embedded view is logically merged to the current component\n * context according to its lexical position.\n *\n * When using the shorthand syntax, Angular allows only [one structural directive\n * on an element](guide/structural-directives#one-structural-directive-per-host-element).\n * If you want to iterate conditionally, for example,\n * put the `*ngIf` on a container element that wraps the `*ngFor` element.\n * For futher discussion, see\n * [Structural Directives](guide/structural-directives#one-per-element).\n *\n * @usageNotes\n *\n * ### Local variables\n *\n * `NgForOf` provides exported values that can be aliased to local variables.\n * For example:\n *\n *  ```\n * <li *ngFor=\"let user of users; index as i; first as isFirst\">\n *    {{i}}/{{users.length}}. {{user}} <span *ngIf=\"isFirst\">default</span>\n * </li>\n * ```\n *\n * The following exported values can be aliased to local variables:\n *\n * - `$implicit: T`: The value of the individual items in the iterable (`ngForOf`).\n * - `ngForOf: NgIterable<T>`: The value of the iterable expression. Useful when the expression is\n * more complex then a property access, for example when using the async pipe (`userStreams |\n * async`).\n * - `index: number`: The index of the current item in the iterable.\n * - `count: number`: The length of the iterable.\n * - `first: boolean`: True when the item is the first item in the iterable.\n * - `last: boolean`: True when the item is the last item in the iterable.\n * - `even: boolean`: True when the item has an even index in the iterable.\n * - `odd: boolean`: True when the item has an odd index in the iterable.\n *\n * ### Change propagation\n *\n * When the contents of the iterator changes, `NgForOf` makes the corresponding changes to the DOM:\n *\n * * When an item is added, a new instance of the template is added to the DOM.\n * * When an item is removed, its template instance is removed from the DOM.\n * * When items are reordered, their respective templates are reordered in the DOM.\n *\n * Angular uses object identity to track insertions and deletions within the iterator and reproduce\n * those changes in the DOM. This has important implications for animations and any stateful\n * controls that are present, such as `<input>` elements that accept user input. Inserted rows can\n * be animated in, deleted rows can be animated out, and unchanged rows retain any unsaved state\n * such as user input.\n * For more on animations, see [Transitions and Triggers](guide/transition-and-triggers).\n *\n * The identities of elements in the iterator can change while the data does not.\n * This can happen, for example, if the iterator is produced from an RPC to the server, and that\n * RPC is re-run. Even if the data hasn't changed, the second response produces objects with\n * different identities, and Angular must tear down the entire DOM and rebuild it (as if all old\n * elements were deleted and all new elements inserted).\n *\n * To avoid this expensive operation, you can customize the default tracking algorithm.\n * by supplying the `trackBy` option to `NgForOf`.\n * `trackBy` takes a function that has two arguments: `index` and `item`.\n * If `trackBy` is given, Angular tracks changes by the return value of the function.\n *\n * @see [Structural Directives](guide/structural-directives)\n * @ngModule CommonModule\n * @publicApi\n */\n\n\nvar NgForOf = /*#__PURE__*/function () {\n  function NgForOf(_viewContainer, _template, _differs) {\n    _classCallCheck(this, NgForOf);\n\n    this._viewContainer = _viewContainer;\n    this._template = _template;\n    this._differs = _differs;\n    this._ngForOf = null;\n    this._ngForOfDirty = true;\n    this._differ = null;\n  }\n  /**\n   * The value of the iterable expression, which can be used as a\n   * [template input variable](guide/structural-directives#template-input-variable).\n   */\n\n\n  _createClass(NgForOf, [{\n    key: \"ngForOf\",\n    set: function set(ngForOf) {\n      this._ngForOf = ngForOf;\n      this._ngForOfDirty = true;\n    }\n    /**\n     * A function that defines how to track changes for items in the iterable.\n     *\n     * When items are added, moved, or removed in the iterable,\n     * the directive must re-render the appropriate DOM nodes.\n     * To minimize churn in the DOM, only nodes that have changed\n     * are re-rendered.\n     *\n     * By default, the change detector assumes that\n     * the object instance identifies the node in the iterable.\n     * When this function is supplied, the directive uses\n     * the result of calling this function to identify the item node,\n     * rather than the identity of the object itself.\n     *\n     * The function receives two inputs,\n     * the iteration index and the associated node data.\n     */\n\n  }, {\n    key: \"ngForTrackBy\",\n    get: function get() {\n      return this._trackByFn;\n    }\n    /**\n     * A reference to the template that is stamped out for each item in the iterable.\n     * @see [template reference variable](guide/template-reference-variables)\n     */\n    ,\n    set: function set(fn) {\n      if (isDevMode() && fn != null && typeof fn !== 'function') {\n        // TODO(vicb): use a log service once there is a public one available\n        if (console && console.warn) {\n          console.warn(\"trackBy must be a function, but received \".concat(JSON.stringify(fn), \". \") + \"See https://angular.io/api/common/NgForOf#change-propagation for more information.\");\n        }\n      }\n\n      this._trackByFn = fn;\n    }\n  }, {\n    key: \"ngForTemplate\",\n    set: function set(value) {\n      // TODO(TS2.1): make TemplateRef<Partial<NgForRowOf<T>>> once we move to TS v2.1\n      // The current type is too restrictive; a template that just uses index, for example,\n      // should be acceptable.\n      if (value) {\n        this._template = value;\n      }\n    }\n    /**\n     * Applies the changes when needed.\n     */\n\n  }, {\n    key: \"ngDoCheck\",\n    value: function ngDoCheck() {\n      if (this._ngForOfDirty) {\n        this._ngForOfDirty = false; // React on ngForOf changes only once all inputs have been initialized\n\n        var value = this._ngForOf;\n\n        if (!this._differ && value) {\n          try {\n            this._differ = this._differs.find(value).create(this.ngForTrackBy);\n          } catch (_a) {\n            throw new Error(\"Cannot find a differ supporting object '\".concat(value, \"' of type '\").concat(getTypeName(value), \"'. NgFor only supports binding to Iterables such as Arrays.\"));\n          }\n        }\n      }\n\n      if (this._differ) {\n        var changes = this._differ.diff(this._ngForOf);\n\n        if (changes) this._applyChanges(changes);\n      }\n    }\n  }, {\n    key: \"_applyChanges\",\n    value: function _applyChanges(changes) {\n      var _this12 = this;\n\n      var insertTuples = [];\n      changes.forEachOperation(function (item, adjustedPreviousIndex, currentIndex) {\n        if (item.previousIndex == null) {\n          // NgForOf is never \"null\" or \"undefined\" here because the differ detected\n          // that a new item needs to be inserted from the iterable. This implies that\n          // there is an iterable value for \"_ngForOf\".\n          var view = _this12._viewContainer.createEmbeddedView(_this12._template, new NgForOfContext(null, _this12._ngForOf, -1, -1), currentIndex === null ? undefined : currentIndex);\n\n          var tuple = new RecordViewTuple(item, view);\n          insertTuples.push(tuple);\n        } else if (currentIndex == null) {\n          _this12._viewContainer.remove(adjustedPreviousIndex === null ? undefined : adjustedPreviousIndex);\n        } else if (adjustedPreviousIndex !== null) {\n          var _view = _this12._viewContainer.get(adjustedPreviousIndex);\n\n          _this12._viewContainer.move(_view, currentIndex);\n\n          var _tuple = new RecordViewTuple(item, _view);\n\n          insertTuples.push(_tuple);\n        }\n      });\n\n      for (var i = 0; i < insertTuples.length; i++) {\n        this._perViewChange(insertTuples[i].view, insertTuples[i].record);\n      }\n\n      for (var _i2 = 0, ilen = this._viewContainer.length; _i2 < ilen; _i2++) {\n        var viewRef = this._viewContainer.get(_i2);\n\n        viewRef.context.index = _i2;\n        viewRef.context.count = ilen;\n        viewRef.context.ngForOf = this._ngForOf;\n      }\n\n      changes.forEachIdentityChange(function (record) {\n        var viewRef = _this12._viewContainer.get(record.currentIndex);\n\n        viewRef.context.$implicit = record.item;\n      });\n    }\n  }, {\n    key: \"_perViewChange\",\n    value: function _perViewChange(view, record) {\n      view.context.$implicit = record.item;\n    }\n    /**\n     * Asserts the correct type of the context for the template that `NgForOf` will render.\n     *\n     * The presence of this method is a signal to the Ivy template type-check compiler that the\n     * `NgForOf` structural directive renders its template with a specific context type.\n     */\n\n  }], [{\n    key: \"ngTemplateContextGuard\",\n    value: function ngTemplateContextGuard(dir, ctx) {\n      return true;\n    }\n  }]);\n\n  return NgForOf;\n}();\n\nNgForOf.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[ngFor][ngForOf]'\n  }]\n}];\n\nNgForOf.ctorParameters = function () {\n  return [{\n    type: ViewContainerRef\n  }, {\n    type: TemplateRef\n  }, {\n    type: IterableDiffers\n  }];\n};\n\nNgForOf.propDecorators = {\n  ngForOf: [{\n    type: Input\n  }],\n  ngForTrackBy: [{\n    type: Input\n  }],\n  ngForTemplate: [{\n    type: Input\n  }]\n};\n\nvar RecordViewTuple = /*#__PURE__*/_createClass(function RecordViewTuple(record, view) {\n  _classCallCheck(this, RecordViewTuple);\n\n  this.record = record;\n  this.view = view;\n});\n\nfunction getTypeName(type) {\n  return type['name'] || _typeof(type);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A structural directive that conditionally includes a template based on the value of\n * an expression coerced to Boolean.\n * When the expression evaluates to true, Angular renders the template\n * provided in a `then` clause, and when  false or null,\n * Angular renders the template provided in an optional `else` clause. The default\n * template for the `else` clause is blank.\n *\n * A [shorthand form](guide/structural-directives#the-asterisk--prefix) of the directive,\n * `*ngIf=\"condition\"`, is generally used, provided\n * as an attribute of the anchor element for the inserted template.\n * Angular expands this into a more explicit version, in which the anchor element\n * is contained in an `<ng-template>` element.\n *\n * Simple form with shorthand syntax:\n *\n * ```\n * <div *ngIf=\"condition\">Content to render when condition is true.</div>\n * ```\n *\n * Simple form with expanded syntax:\n *\n * ```\n * <ng-template [ngIf]=\"condition\"><div>Content to render when condition is\n * true.</div></ng-template>\n * ```\n *\n * Form with an \"else\" block:\n *\n * ```\n * <div *ngIf=\"condition; else elseBlock\">Content to render when condition is true.</div>\n * <ng-template #elseBlock>Content to render when condition is false.</ng-template>\n * ```\n *\n * Shorthand form with \"then\" and \"else\" blocks:\n *\n * ```\n * <div *ngIf=\"condition; then thenBlock else elseBlock\"></div>\n * <ng-template #thenBlock>Content to render when condition is true.</ng-template>\n * <ng-template #elseBlock>Content to render when condition is false.</ng-template>\n * ```\n *\n * Form with storing the value locally:\n *\n * ```\n * <div *ngIf=\"condition as value; else elseBlock\">{{value}}</div>\n * <ng-template #elseBlock>Content to render when value is null.</ng-template>\n * ```\n *\n * @usageNotes\n *\n * The `*ngIf` directive is most commonly used to conditionally show an inline template,\n * as seen in the following  example.\n * The default `else` template is blank.\n *\n * {@example common/ngIf/ts/module.ts region='NgIfSimple'}\n *\n * ### Showing an alternative template using `else`\n *\n * To display a template when `expression` evaluates to false, use an `else` template\n * binding as shown in the following example.\n * The `else` binding points to an `<ng-template>`  element labeled `#elseBlock`.\n * The template can be defined anywhere in the component view, but is typically placed right after\n * `ngIf` for readability.\n *\n * {@example common/ngIf/ts/module.ts region='NgIfElse'}\n *\n * ### Using an external `then` template\n *\n * In the previous example, the then-clause template is specified inline, as the content of the\n * tag that contains the `ngIf` directive. You can also specify a template that is defined\n * externally, by referencing a labeled `<ng-template>` element. When you do this, you can\n * change which template to use at runtime, as shown in the following example.\n *\n * {@example common/ngIf/ts/module.ts region='NgIfThenElse'}\n *\n * ### Storing a conditional result in a variable\n *\n * You might want to show a set of properties from the same object. If you are waiting\n * for asynchronous data, the object can be undefined.\n * In this case, you can use `ngIf` and store the result of the condition in a local\n * variable as shown in the the following example.\n *\n * {@example common/ngIf/ts/module.ts region='NgIfAs'}\n *\n * This code uses only one `AsyncPipe`, so only one subscription is created.\n * The conditional statement stores the result of `userStream|async` in the local variable `user`.\n * You can then bind the local `user` repeatedly.\n *\n * The conditional displays the data only if `userStream` returns a value,\n * so you don't need to use the\n * [safe-navigation-operator](guide/template-expression-operators#safe-navigation-operator) (`?.`)\n * to guard against null values when accessing properties.\n * You can display an alternative template while waiting for the data.\n *\n * ### Shorthand syntax\n *\n * The shorthand syntax `*ngIf` expands into two separate template specifications\n * for the \"then\" and \"else\" clauses. For example, consider the following shorthand statement,\n * that is meant to show a loading page while waiting for data to be loaded.\n *\n * ```\n * <div class=\"hero-list\" *ngIf=\"heroes else loading\">\n *  ...\n * </div>\n *\n * <ng-template #loading>\n *  <div>Loading...</div>\n * </ng-template>\n * ```\n *\n * You can see that the \"else\" clause references the `<ng-template>`\n * with the `#loading` label, and the template for the \"then\" clause\n * is provided as the content of the anchor element.\n *\n * However, when Angular expands the shorthand syntax, it creates\n * another `<ng-template>` tag, with `ngIf` and `ngIfElse` directives.\n * The anchor element containing the template for the \"then\" clause becomes\n * the content of this unlabeled `<ng-template>` tag.\n *\n * ```\n * <ng-template [ngIf]=\"heroes\" [ngIfElse]=\"loading\">\n *  <div class=\"hero-list\">\n *   ...\n *  </div>\n * </ng-template>\n *\n * <ng-template #loading>\n *  <div>Loading...</div>\n * </ng-template>\n * ```\n *\n * The presence of the implicit template object has implications for the nesting of\n * structural directives. For more on this subject, see\n * [Structural Directives](https://angular.io/guide/structural-directives#one-per-element).\n *\n * @ngModule CommonModule\n * @publicApi\n */\n\n\nvar NgIf = /*#__PURE__*/function () {\n  function NgIf(_viewContainer, templateRef) {\n    _classCallCheck(this, NgIf);\n\n    this._viewContainer = _viewContainer;\n    this._context = new NgIfContext();\n    this._thenTemplateRef = null;\n    this._elseTemplateRef = null;\n    this._thenViewRef = null;\n    this._elseViewRef = null;\n    this._thenTemplateRef = templateRef;\n  }\n  /**\n   * The Boolean expression to evaluate as the condition for showing a template.\n   */\n\n\n  _createClass(NgIf, [{\n    key: \"ngIf\",\n    set: function set(condition) {\n      this._context.$implicit = this._context.ngIf = condition;\n\n      this._updateView();\n    }\n    /**\n     * A template to show if the condition expression evaluates to true.\n     */\n\n  }, {\n    key: \"ngIfThen\",\n    set: function set(templateRef) {\n      assertTemplate('ngIfThen', templateRef);\n      this._thenTemplateRef = templateRef;\n      this._thenViewRef = null; // clear previous view if any.\n\n      this._updateView();\n    }\n    /**\n     * A template to show if the condition expression evaluates to false.\n     */\n\n  }, {\n    key: \"ngIfElse\",\n    set: function set(templateRef) {\n      assertTemplate('ngIfElse', templateRef);\n      this._elseTemplateRef = templateRef;\n      this._elseViewRef = null; // clear previous view if any.\n\n      this._updateView();\n    }\n  }, {\n    key: \"_updateView\",\n    value: function _updateView() {\n      if (this._context.$implicit) {\n        if (!this._thenViewRef) {\n          this._viewContainer.clear();\n\n          this._elseViewRef = null;\n\n          if (this._thenTemplateRef) {\n            this._thenViewRef = this._viewContainer.createEmbeddedView(this._thenTemplateRef, this._context);\n          }\n        }\n      } else {\n        if (!this._elseViewRef) {\n          this._viewContainer.clear();\n\n          this._thenViewRef = null;\n\n          if (this._elseTemplateRef) {\n            this._elseViewRef = this._viewContainer.createEmbeddedView(this._elseTemplateRef, this._context);\n          }\n        }\n      }\n    }\n    /**\n     * Asserts the correct type of the context for the template that `NgIf` will render.\n     *\n     * The presence of this method is a signal to the Ivy template type-check compiler that the\n     * `NgIf` structural directive renders its template with a specific context type.\n     */\n\n  }], [{\n    key: \"ngTemplateContextGuard\",\n    value: function ngTemplateContextGuard(dir, ctx) {\n      return true;\n    }\n  }]);\n\n  return NgIf;\n}();\n\nNgIf.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[ngIf]'\n  }]\n}];\n\nNgIf.ctorParameters = function () {\n  return [{\n    type: ViewContainerRef\n  }, {\n    type: TemplateRef\n  }];\n};\n\nNgIf.propDecorators = {\n  ngIf: [{\n    type: Input\n  }],\n  ngIfThen: [{\n    type: Input\n  }],\n  ngIfElse: [{\n    type: Input\n  }]\n};\n/**\n * @publicApi\n */\n\nvar NgIfContext = /*#__PURE__*/_createClass(function NgIfContext() {\n  _classCallCheck(this, NgIfContext);\n\n  this.$implicit = null;\n  this.ngIf = null;\n});\n\nfunction assertTemplate(property, templateRef) {\n  var isTemplateRefOrNull = !!(!templateRef || templateRef.createEmbeddedView);\n\n  if (!isTemplateRefOrNull) {\n    throw new Error(\"\".concat(property, \" must be a TemplateRef, but received '\").concat(ɵstringify(templateRef), \"'.\"));\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar SwitchView = /*#__PURE__*/function () {\n  function SwitchView(_viewContainerRef, _templateRef) {\n    _classCallCheck(this, SwitchView);\n\n    this._viewContainerRef = _viewContainerRef;\n    this._templateRef = _templateRef;\n    this._created = false;\n  }\n\n  _createClass(SwitchView, [{\n    key: \"create\",\n    value: function create() {\n      this._created = true;\n\n      this._viewContainerRef.createEmbeddedView(this._templateRef);\n    }\n  }, {\n    key: \"destroy\",\n    value: function destroy() {\n      this._created = false;\n\n      this._viewContainerRef.clear();\n    }\n  }, {\n    key: \"enforceState\",\n    value: function enforceState(created) {\n      if (created && !this._created) {\n        this.create();\n      } else if (!created && this._created) {\n        this.destroy();\n      }\n    }\n  }]);\n\n  return SwitchView;\n}();\n/**\n * @ngModule CommonModule\n *\n * @description\n * The `[ngSwitch]` directive on a container specifies an expression to match against.\n * The expressions to match are provided by `ngSwitchCase` directives on views within the container.\n * - Every view that matches is rendered.\n * - If there are no matches, a view with the `ngSwitchDefault` directive is rendered.\n * - Elements within the `[NgSwitch]` statement but outside of any `NgSwitchCase`\n * or `ngSwitchDefault` directive are preserved at the location.\n *\n * @usageNotes\n * Define a container element for the directive, and specify the switch expression\n * to match against as an attribute:\n *\n * ```\n * <container-element [ngSwitch]=\"switch_expression\">\n * ```\n *\n * Within the container, `*ngSwitchCase` statements specify the match expressions\n * as attributes. Include `*ngSwitchDefault` as the final case.\n *\n * ```\n * <container-element [ngSwitch]=\"switch_expression\">\n *    <some-element *ngSwitchCase=\"match_expression_1\">...</some-element>\n * ...\n *    <some-element *ngSwitchDefault>...</some-element>\n * </container-element>\n * ```\n *\n * ### Usage Examples\n *\n * The following example shows how to use more than one case to display the same view:\n *\n * ```\n * <container-element [ngSwitch]=\"switch_expression\">\n *   <!-- the same view can be shown in more than one case -->\n *   <some-element *ngSwitchCase=\"match_expression_1\">...</some-element>\n *   <some-element *ngSwitchCase=\"match_expression_2\">...</some-element>\n *   <some-other-element *ngSwitchCase=\"match_expression_3\">...</some-other-element>\n *   <!--default case when there are no matches -->\n *   <some-element *ngSwitchDefault>...</some-element>\n * </container-element>\n * ```\n *\n * The following example shows how cases can be nested:\n * ```\n * <container-element [ngSwitch]=\"switch_expression\">\n *       <some-element *ngSwitchCase=\"match_expression_1\">...</some-element>\n *       <some-element *ngSwitchCase=\"match_expression_2\">...</some-element>\n *       <some-other-element *ngSwitchCase=\"match_expression_3\">...</some-other-element>\n *       <ng-container *ngSwitchCase=\"match_expression_3\">\n *         <!-- use a ng-container to group multiple root nodes -->\n *         <inner-element></inner-element>\n *         <inner-other-element></inner-other-element>\n *       </ng-container>\n *       <some-element *ngSwitchDefault>...</some-element>\n *     </container-element>\n * ```\n *\n * @publicApi\n * @see `NgSwitchCase`\n * @see `NgSwitchDefault`\n * @see [Structural Directives](guide/structural-directives)\n *\n */\n\n\nvar NgSwitch = /*#__PURE__*/function () {\n  function NgSwitch() {\n    _classCallCheck(this, NgSwitch);\n\n    this._defaultUsed = false;\n    this._caseCount = 0;\n    this._lastCaseCheckIndex = 0;\n    this._lastCasesMatched = false;\n  }\n\n  _createClass(NgSwitch, [{\n    key: \"ngSwitch\",\n    set: function set(newValue) {\n      this._ngSwitch = newValue;\n\n      if (this._caseCount === 0) {\n        this._updateDefaultCases(true);\n      }\n    }\n    /** @internal */\n\n  }, {\n    key: \"_addCase\",\n    value: function _addCase() {\n      return this._caseCount++;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_addDefault\",\n    value: function _addDefault(view) {\n      if (!this._defaultViews) {\n        this._defaultViews = [];\n      }\n\n      this._defaultViews.push(view);\n    }\n    /** @internal */\n\n  }, {\n    key: \"_matchCase\",\n    value: function _matchCase(value) {\n      var matched = value == this._ngSwitch;\n      this._lastCasesMatched = this._lastCasesMatched || matched;\n      this._lastCaseCheckIndex++;\n\n      if (this._lastCaseCheckIndex === this._caseCount) {\n        this._updateDefaultCases(!this._lastCasesMatched);\n\n        this._lastCaseCheckIndex = 0;\n        this._lastCasesMatched = false;\n      }\n\n      return matched;\n    }\n  }, {\n    key: \"_updateDefaultCases\",\n    value: function _updateDefaultCases(useDefault) {\n      if (this._defaultViews && useDefault !== this._defaultUsed) {\n        this._defaultUsed = useDefault;\n\n        for (var i = 0; i < this._defaultViews.length; i++) {\n          var defaultView = this._defaultViews[i];\n          defaultView.enforceState(useDefault);\n        }\n      }\n    }\n  }]);\n\n  return NgSwitch;\n}();\n\nNgSwitch.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[ngSwitch]'\n  }]\n}];\nNgSwitch.propDecorators = {\n  ngSwitch: [{\n    type: Input\n  }]\n};\n/**\n * @ngModule CommonModule\n *\n * @description\n * Provides a switch case expression to match against an enclosing `ngSwitch` expression.\n * When the expressions match, the given `NgSwitchCase` template is rendered.\n * If multiple match expressions match the switch expression value, all of them are displayed.\n *\n * @usageNotes\n *\n * Within a switch container, `*ngSwitchCase` statements specify the match expressions\n * as attributes. Include `*ngSwitchDefault` as the final case.\n *\n * ```\n * <container-element [ngSwitch]=\"switch_expression\">\n *   <some-element *ngSwitchCase=\"match_expression_1\">...</some-element>\n *   ...\n *   <some-element *ngSwitchDefault>...</some-element>\n * </container-element>\n * ```\n *\n * Each switch-case statement contains an in-line HTML template or template reference\n * that defines the subtree to be selected if the value of the match expression\n * matches the value of the switch expression.\n *\n * Unlike JavaScript, which uses strict equality, Angular uses loose equality.\n * This means that the empty string, `\"\"` matches 0.\n *\n * @publicApi\n * @see `NgSwitch`\n * @see `NgSwitchDefault`\n *\n */\n\nvar NgSwitchCase = /*#__PURE__*/function () {\n  function NgSwitchCase(viewContainer, templateRef, ngSwitch) {\n    _classCallCheck(this, NgSwitchCase);\n\n    this.ngSwitch = ngSwitch;\n\n    ngSwitch._addCase();\n\n    this._view = new SwitchView(viewContainer, templateRef);\n  }\n  /**\n   * Performs case matching. For internal use only.\n   */\n\n\n  _createClass(NgSwitchCase, [{\n    key: \"ngDoCheck\",\n    value: function ngDoCheck() {\n      this._view.enforceState(this.ngSwitch._matchCase(this.ngSwitchCase));\n    }\n  }]);\n\n  return NgSwitchCase;\n}();\n\nNgSwitchCase.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[ngSwitchCase]'\n  }]\n}];\n\nNgSwitchCase.ctorParameters = function () {\n  return [{\n    type: ViewContainerRef\n  }, {\n    type: TemplateRef\n  }, {\n    type: NgSwitch,\n    decorators: [{\n      type: Host\n    }]\n  }];\n};\n\nNgSwitchCase.propDecorators = {\n  ngSwitchCase: [{\n    type: Input\n  }]\n};\n/**\n * @ngModule CommonModule\n *\n * @description\n *\n * Creates a view that is rendered when no `NgSwitchCase` expressions\n * match the `NgSwitch` expression.\n * This statement should be the final case in an `NgSwitch`.\n *\n * @publicApi\n * @see `NgSwitch`\n * @see `NgSwitchCase`\n *\n */\n\nvar NgSwitchDefault = /*#__PURE__*/_createClass(function NgSwitchDefault(viewContainer, templateRef, ngSwitch) {\n  _classCallCheck(this, NgSwitchDefault);\n\n  ngSwitch._addDefault(new SwitchView(viewContainer, templateRef));\n});\n\nNgSwitchDefault.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[ngSwitchDefault]'\n  }]\n}];\n\nNgSwitchDefault.ctorParameters = function () {\n  return [{\n    type: ViewContainerRef\n  }, {\n    type: TemplateRef\n  }, {\n    type: NgSwitch,\n    decorators: [{\n      type: Host\n    }]\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @ngModule CommonModule\n *\n * @usageNotes\n * ```\n * <some-element [ngPlural]=\"value\">\n *   <ng-template ngPluralCase=\"=0\">there is nothing</ng-template>\n *   <ng-template ngPluralCase=\"=1\">there is one</ng-template>\n *   <ng-template ngPluralCase=\"few\">there are a few</ng-template>\n * </some-element>\n * ```\n *\n * @description\n *\n * Adds / removes DOM sub-trees based on a numeric value. Tailored for pluralization.\n *\n * Displays DOM sub-trees that match the switch expression value, or failing that, DOM sub-trees\n * that match the switch expression's pluralization category.\n *\n * To use this directive you must provide a container element that sets the `[ngPlural]` attribute\n * to a switch expression. Inner elements with a `[ngPluralCase]` will display based on their\n * expression:\n * - if `[ngPluralCase]` is set to a value starting with `=`, it will only display if the value\n *   matches the switch expression exactly,\n * - otherwise, the view will be treated as a \"category match\", and will only display if exact\n *   value matches aren't found and the value maps to its category for the defined locale.\n *\n * See http://cldr.unicode.org/index/cldr-spec/plural-rules\n *\n * @publicApi\n */\n\n\nvar NgPlural = /*#__PURE__*/function () {\n  function NgPlural(_localization) {\n    _classCallCheck(this, NgPlural);\n\n    this._localization = _localization;\n    this._caseViews = {};\n  }\n\n  _createClass(NgPlural, [{\n    key: \"ngPlural\",\n    set: function set(value) {\n      this._switchValue = value;\n\n      this._updateView();\n    }\n  }, {\n    key: \"addCase\",\n    value: function addCase(value, switchView) {\n      this._caseViews[value] = switchView;\n    }\n  }, {\n    key: \"_updateView\",\n    value: function _updateView() {\n      this._clearViews();\n\n      var cases = Object.keys(this._caseViews);\n      var key = getPluralCategory(this._switchValue, cases, this._localization);\n\n      this._activateView(this._caseViews[key]);\n    }\n  }, {\n    key: \"_clearViews\",\n    value: function _clearViews() {\n      if (this._activeView) this._activeView.destroy();\n    }\n  }, {\n    key: \"_activateView\",\n    value: function _activateView(view) {\n      if (view) {\n        this._activeView = view;\n\n        this._activeView.create();\n      }\n    }\n  }]);\n\n  return NgPlural;\n}();\n\nNgPlural.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[ngPlural]'\n  }]\n}];\n\nNgPlural.ctorParameters = function () {\n  return [{\n    type: NgLocalization\n  }];\n};\n\nNgPlural.propDecorators = {\n  ngPlural: [{\n    type: Input\n  }]\n};\n/**\n * @ngModule CommonModule\n *\n * @description\n *\n * Creates a view that will be added/removed from the parent {@link NgPlural} when the\n * given expression matches the plural expression according to CLDR rules.\n *\n * @usageNotes\n * ```\n * <some-element [ngPlural]=\"value\">\n *   <ng-template ngPluralCase=\"=0\">...</ng-template>\n *   <ng-template ngPluralCase=\"other\">...</ng-template>\n * </some-element>\n *```\n *\n * See {@link NgPlural} for more details and example.\n *\n * @publicApi\n */\n\nvar NgPluralCase = /*#__PURE__*/_createClass(function NgPluralCase(value, template, viewContainer, ngPlural) {\n  _classCallCheck(this, NgPluralCase);\n\n  this.value = value;\n  var isANumber = !isNaN(Number(value));\n  ngPlural.addCase(isANumber ? \"=\".concat(value) : value, new SwitchView(viewContainer, template));\n});\n\nNgPluralCase.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[ngPluralCase]'\n  }]\n}];\n\nNgPluralCase.ctorParameters = function () {\n  return [{\n    type: String,\n    decorators: [{\n      type: Attribute,\n      args: ['ngPluralCase']\n    }]\n  }, {\n    type: TemplateRef\n  }, {\n    type: ViewContainerRef\n  }, {\n    type: NgPlural,\n    decorators: [{\n      type: Host\n    }]\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @ngModule CommonModule\n *\n * @usageNotes\n *\n * Set the font of the containing element to the result of an expression.\n *\n * ```\n * <some-element [ngStyle]=\"{'font-style': styleExp}\">...</some-element>\n * ```\n *\n * Set the width of the containing element to a pixel value returned by an expression.\n *\n * ```\n * <some-element [ngStyle]=\"{'max-width.px': widthExp}\">...</some-element>\n * ```\n *\n * Set a collection of style values using an expression that returns key-value pairs.\n *\n * ```\n * <some-element [ngStyle]=\"objExp\">...</some-element>\n * ```\n *\n * @description\n *\n * An attribute directive that updates styles for the containing HTML element.\n * Sets one or more style properties, specified as colon-separated key-value pairs.\n * The key is a style name, with an optional `.<unit>` suffix\n * (such as 'top.px', 'font-style.em').\n * The value is an expression to be evaluated.\n * The resulting non-null value, expressed in the given unit,\n * is assigned to the given style property.\n * If the result of evaluation is null, the corresponding style is removed.\n *\n * @publicApi\n */\n\n\nvar NgStyle = /*#__PURE__*/function () {\n  function NgStyle(_ngEl, _differs, _renderer) {\n    _classCallCheck(this, NgStyle);\n\n    this._ngEl = _ngEl;\n    this._differs = _differs;\n    this._renderer = _renderer;\n    this._ngStyle = null;\n    this._differ = null;\n  }\n\n  _createClass(NgStyle, [{\n    key: \"ngStyle\",\n    set: function set(values) {\n      this._ngStyle = values;\n\n      if (!this._differ && values) {\n        this._differ = this._differs.find(values).create();\n      }\n    }\n  }, {\n    key: \"ngDoCheck\",\n    value: function ngDoCheck() {\n      if (this._differ) {\n        var changes = this._differ.diff(this._ngStyle);\n\n        if (changes) {\n          this._applyChanges(changes);\n        }\n      }\n    }\n  }, {\n    key: \"_setStyle\",\n    value: function _setStyle(nameAndUnit, value) {\n      var _nameAndUnit$split = nameAndUnit.split('.'),\n          _nameAndUnit$split2 = _slicedToArray(_nameAndUnit$split, 2),\n          name = _nameAndUnit$split2[0],\n          unit = _nameAndUnit$split2[1];\n\n      value = value != null && unit ? \"\".concat(value).concat(unit) : value;\n\n      if (value != null) {\n        this._renderer.setStyle(this._ngEl.nativeElement, name, value);\n      } else {\n        this._renderer.removeStyle(this._ngEl.nativeElement, name);\n      }\n    }\n  }, {\n    key: \"_applyChanges\",\n    value: function _applyChanges(changes) {\n      var _this13 = this;\n\n      changes.forEachRemovedItem(function (record) {\n        return _this13._setStyle(record.key, null);\n      });\n      changes.forEachAddedItem(function (record) {\n        return _this13._setStyle(record.key, record.currentValue);\n      });\n      changes.forEachChangedItem(function (record) {\n        return _this13._setStyle(record.key, record.currentValue);\n      });\n    }\n  }]);\n\n  return NgStyle;\n}();\n\nNgStyle.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[ngStyle]'\n  }]\n}];\n\nNgStyle.ctorParameters = function () {\n  return [{\n    type: ElementRef\n  }, {\n    type: KeyValueDiffers\n  }, {\n    type: Renderer2\n  }];\n};\n\nNgStyle.propDecorators = {\n  ngStyle: [{\n    type: Input,\n    args: ['ngStyle']\n  }]\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @ngModule CommonModule\n *\n * @description\n *\n * Inserts an embedded view from a prepared `TemplateRef`.\n *\n * You can attach a context object to the `EmbeddedViewRef` by setting `[ngTemplateOutletContext]`.\n * `[ngTemplateOutletContext]` should be an object, the object's keys will be available for binding\n * by the local template `let` declarations.\n *\n * @usageNotes\n * ```\n * <ng-container *ngTemplateOutlet=\"templateRefExp; context: contextExp\"></ng-container>\n * ```\n *\n * Using the key `$implicit` in the context object will set its value as default.\n *\n * ### Example\n *\n * {@example common/ngTemplateOutlet/ts/module.ts region='NgTemplateOutlet'}\n *\n * @publicApi\n */\n\nvar NgTemplateOutlet = /*#__PURE__*/function () {\n  function NgTemplateOutlet(_viewContainerRef) {\n    _classCallCheck(this, NgTemplateOutlet);\n\n    this._viewContainerRef = _viewContainerRef;\n    this._viewRef = null;\n    /**\n     * A context object to attach to the {@link EmbeddedViewRef}. This should be an\n     * object, the object's keys will be available for binding by the local template `let`\n     * declarations.\n     * Using the key `$implicit` in the context object will set its value as default.\n     */\n\n    this.ngTemplateOutletContext = null;\n    /**\n     * A string defining the template reference and optionally the context object for the template.\n     */\n\n    this.ngTemplateOutlet = null;\n  }\n\n  _createClass(NgTemplateOutlet, [{\n    key: \"ngOnChanges\",\n    value: function ngOnChanges(changes) {\n      var recreateView = this._shouldRecreateView(changes);\n\n      if (recreateView) {\n        var viewContainerRef = this._viewContainerRef;\n\n        if (this._viewRef) {\n          viewContainerRef.remove(viewContainerRef.indexOf(this._viewRef));\n        }\n\n        this._viewRef = this.ngTemplateOutlet ? viewContainerRef.createEmbeddedView(this.ngTemplateOutlet, this.ngTemplateOutletContext) : null;\n      } else if (this._viewRef && this.ngTemplateOutletContext) {\n        this._updateExistingContext(this.ngTemplateOutletContext);\n      }\n    }\n    /**\n     * We need to re-create existing embedded view if:\n     * - templateRef has changed\n     * - context has changes\n     *\n     * We mark context object as changed when the corresponding object\n     * shape changes (new properties are added or existing properties are removed).\n     * In other words we consider context with the same properties as \"the same\" even\n     * if object reference changes (see https://github.com/angular/angular/issues/13407).\n     */\n\n  }, {\n    key: \"_shouldRecreateView\",\n    value: function _shouldRecreateView(changes) {\n      var ctxChange = changes['ngTemplateOutletContext'];\n      return !!changes['ngTemplateOutlet'] || ctxChange && this._hasContextShapeChanged(ctxChange);\n    }\n  }, {\n    key: \"_hasContextShapeChanged\",\n    value: function _hasContextShapeChanged(ctxChange) {\n      var prevCtxKeys = Object.keys(ctxChange.previousValue || {});\n      var currCtxKeys = Object.keys(ctxChange.currentValue || {});\n\n      if (prevCtxKeys.length === currCtxKeys.length) {\n        var _iterator2 = _createForOfIteratorHelper(currCtxKeys),\n            _step2;\n\n        try {\n          for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {\n            var propName = _step2.value;\n\n            if (prevCtxKeys.indexOf(propName) === -1) {\n              return true;\n            }\n          }\n        } catch (err) {\n          _iterator2.e(err);\n        } finally {\n          _iterator2.f();\n        }\n\n        return false;\n      }\n\n      return true;\n    }\n  }, {\n    key: \"_updateExistingContext\",\n    value: function _updateExistingContext(ctx) {\n      for (var _i3 = 0, _Object$keys = Object.keys(ctx); _i3 < _Object$keys.length; _i3++) {\n        var propName = _Object$keys[_i3];\n        this._viewRef.context[propName] = this.ngTemplateOutletContext[propName];\n      }\n    }\n  }]);\n\n  return NgTemplateOutlet;\n}();\n\nNgTemplateOutlet.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[ngTemplateOutlet]'\n  }]\n}];\n\nNgTemplateOutlet.ctorParameters = function () {\n  return [{\n    type: ViewContainerRef\n  }];\n};\n\nNgTemplateOutlet.propDecorators = {\n  ngTemplateOutletContext: [{\n    type: Input\n  }],\n  ngTemplateOutlet: [{\n    type: Input\n  }]\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A collection of Angular directives that are likely to be used in each and every Angular\n * application.\n */\n\nvar COMMON_DIRECTIVES = [NgClass, NgComponentOutlet, NgForOf, NgIf, NgTemplateOutlet, NgStyle, NgSwitch, NgSwitchCase, NgSwitchDefault, NgPlural, NgPluralCase];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nfunction invalidPipeArgumentError(type, value) {\n  return Error(\"InvalidPipeArgument: '\".concat(value, \"' for pipe '\").concat(ɵstringify(type), \"'\"));\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ObservableStrategy = /*#__PURE__*/function () {\n  function ObservableStrategy() {\n    _classCallCheck(this, ObservableStrategy);\n  }\n\n  _createClass(ObservableStrategy, [{\n    key: \"createSubscription\",\n    value: function createSubscription(async, updateLatestValue) {\n      return async.subscribe({\n        next: updateLatestValue,\n        error: function error(e) {\n          throw e;\n        }\n      });\n    }\n  }, {\n    key: \"dispose\",\n    value: function dispose(subscription) {\n      subscription.unsubscribe();\n    }\n  }, {\n    key: \"onDestroy\",\n    value: function onDestroy(subscription) {\n      subscription.unsubscribe();\n    }\n  }]);\n\n  return ObservableStrategy;\n}();\n\nvar PromiseStrategy = /*#__PURE__*/function () {\n  function PromiseStrategy() {\n    _classCallCheck(this, PromiseStrategy);\n  }\n\n  _createClass(PromiseStrategy, [{\n    key: \"createSubscription\",\n    value: function createSubscription(async, updateLatestValue) {\n      return async.then(updateLatestValue, function (e) {\n        throw e;\n      });\n    }\n  }, {\n    key: \"dispose\",\n    value: function dispose(subscription) {}\n  }, {\n    key: \"onDestroy\",\n    value: function onDestroy(subscription) {}\n  }]);\n\n  return PromiseStrategy;\n}();\n\nvar _promiseStrategy = new PromiseStrategy();\n\nvar _observableStrategy = new ObservableStrategy();\n/**\n * @ngModule CommonModule\n * @description\n *\n * Unwraps a value from an asynchronous primitive.\n *\n * The `async` pipe subscribes to an `Observable` or `Promise` and returns the latest value it has\n * emitted. When a new value is emitted, the `async` pipe marks the component to be checked for\n * changes. When the component gets destroyed, the `async` pipe unsubscribes automatically to avoid\n * potential memory leaks.\n *\n * @usageNotes\n *\n * ### Examples\n *\n * This example binds a `Promise` to the view. Clicking the `Resolve` button resolves the\n * promise.\n *\n * {@example common/pipes/ts/async_pipe.ts region='AsyncPipePromise'}\n *\n * It's also possible to use `async` with Observables. The example below binds the `time` Observable\n * to the view. The Observable continuously updates the view with the current time.\n *\n * {@example common/pipes/ts/async_pipe.ts region='AsyncPipeObservable'}\n *\n * @publicApi\n */\n\n\nvar AsyncPipe = /*#__PURE__*/function () {\n  function AsyncPipe(_ref) {\n    _classCallCheck(this, AsyncPipe);\n\n    this._ref = _ref;\n    this._latestValue = null;\n    this._subscription = null;\n    this._obj = null;\n    this._strategy = null;\n  }\n\n  _createClass(AsyncPipe, [{\n    key: \"ngOnDestroy\",\n    value: function ngOnDestroy() {\n      if (this._subscription) {\n        this._dispose();\n      }\n    }\n  }, {\n    key: \"transform\",\n    value: function transform(obj) {\n      if (!this._obj) {\n        if (obj) {\n          this._subscribe(obj);\n        }\n\n        return this._latestValue;\n      }\n\n      if (obj !== this._obj) {\n        this._dispose();\n\n        return this.transform(obj);\n      }\n\n      return this._latestValue;\n    }\n  }, {\n    key: \"_subscribe\",\n    value: function _subscribe(obj) {\n      var _this14 = this;\n\n      this._obj = obj;\n      this._strategy = this._selectStrategy(obj);\n      this._subscription = this._strategy.createSubscription(obj, function (value) {\n        return _this14._updateLatestValue(obj, value);\n      });\n    }\n  }, {\n    key: \"_selectStrategy\",\n    value: function _selectStrategy(obj) {\n      if (ɵisPromise(obj)) {\n        return _promiseStrategy;\n      }\n\n      if (ɵisObservable(obj)) {\n        return _observableStrategy;\n      }\n\n      throw invalidPipeArgumentError(AsyncPipe, obj);\n    }\n  }, {\n    key: \"_dispose\",\n    value: function _dispose() {\n      this._strategy.dispose(this._subscription);\n\n      this._latestValue = null;\n      this._subscription = null;\n      this._obj = null;\n    }\n  }, {\n    key: \"_updateLatestValue\",\n    value: function _updateLatestValue(async, value) {\n      if (async === this._obj) {\n        this._latestValue = value;\n\n        this._ref.markForCheck();\n      }\n    }\n  }]);\n\n  return AsyncPipe;\n}();\n\nAsyncPipe.decorators = [{\n  type: Pipe,\n  args: [{\n    name: 'async',\n    pure: false\n  }]\n}];\n\nAsyncPipe.ctorParameters = function () {\n  return [{\n    type: ChangeDetectorRef\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Transforms text to all lower case.\n *\n * @see `UpperCasePipe`\n * @see `TitleCasePipe`\n * @usageNotes\n *\n * The following example defines a view that allows the user to enter\n * text, and then uses the pipe to convert the input text to all lower case.\n *\n * <code-example path=\"common/pipes/ts/lowerupper_pipe.ts\" region='LowerUpperPipe'></code-example>\n *\n * @ngModule CommonModule\n * @publicApi\n */\n\n\nvar LowerCasePipe = /*#__PURE__*/function () {\n  function LowerCasePipe() {\n    _classCallCheck(this, LowerCasePipe);\n  }\n\n  _createClass(LowerCasePipe, [{\n    key: \"transform\",\n    value: function transform(value) {\n      if (value == null) return null;\n\n      if (typeof value !== 'string') {\n        throw invalidPipeArgumentError(LowerCasePipe, value);\n      }\n\n      return value.toLowerCase();\n    }\n  }]);\n\n  return LowerCasePipe;\n}();\n\nLowerCasePipe.decorators = [{\n  type: Pipe,\n  args: [{\n    name: 'lowercase'\n  }]\n}]; //\n// Regex below matches any Unicode word and compatible with ES5. In ES2018 the same result\n// can be achieved by using /\\p{L}\\S*/gu and also known as Unicode Property Escapes\n// (http://2ality.com/2017/07/regexp-unicode-property-escapes.html). Since there is no\n// transpilation of this functionality down to ES5 without external tool, the only solution is\n// to use already transpiled form. Example can be found here -\n// https://mothereff.in/regexpu#input=var+regex+%3D+/%5Cp%7BL%7D/u%3B&unicodePropertyEscape=1\n//\n\nvar unicodeWordMatch = 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|\\uD800[\\uDC00-\\uDC0B\\uDC0D-\\uDC26\\uDC28-\\uDC3A\\uDC3C\\uDC3D\\uDC3F-\\uDC4D\\uDC50-\\uDC5D\\uDC80-\\uDCFA\\uDE80-\\uDE9C\\uDEA0-\\uDED0\\uDF00-\\uDF1F\\uDF2D-\\uDF40\\uDF42-\\uDF49\\uDF50-\\uDF75\\uDF80-\\uDF9D\\uDFA0-\\uDFC3\\uDFC8-\\uDFCF]|\\uD801[\\uDC00-\\uDC9D\\uDCB0-\\uDCD3\\uDCD8-\\uDCFB\\uDD00-\\uDD27\\uDD30-\\uDD63\\uDE00-\\uDF36\\uDF40-\\uDF55\\uDF60-\\uDF67]|\\uD802[\\uDC00-\\uDC05\\uDC08\\uDC0A-\\uDC35\\uDC37\\uDC38\\uDC3C\\uDC3F-\\uDC55\\uDC60-\\uDC76\\uDC80-\\uDC9E\\uDCE0-\\uDCF2\\uDCF4\\uDCF5\\uDD00-\\uDD15\\uDD20-\\uDD39\\uDD80-\\uDDB7\\uDDBE\\uDDBF\\uDE00\\uDE10-\\uDE13\\uDE15-\\uDE17\\uDE19-\\uDE33\\uDE60-\\uDE7C\\uDE80-\\uDE9C\\uDEC0-\\uDEC7\\uDEC9-\\uDEE4\\uDF00-\\uDF35\\uDF40-\\uDF55\\uDF60-\\uDF72\\uDF80-\\uDF91]|\\uD803[\\uDC00-\\uDC48\\uDC80-\\uDCB2\\uDCC0-\\uDCF2]|\\uD804[\\uDC03-\\uDC37\\uDC83-\\uDCAF\\uDCD0-\\uDCE8\\uDD03-\\uDD26\\uDD50-\\uDD72\\uDD76\\uDD83-\\uDDB2\\uDDC1-\\uDDC4\\uDDDA\\uDDDC\\uDE00-\\uDE11\\uDE13-\\uDE2B\\uDE80-\\uDE86\\uDE88\\uDE8A-\\uDE8D\\uDE8F-\\uDE9D\\uDE9F-\\uDEA8\\uDEB0-\\uDEDE\\uDF05-\\uDF0C\\uDF0F\\uDF10\\uDF13-\\uDF28\\uDF2A-\\uDF30\\uDF32\\uDF33\\uDF35-\\uDF39\\uDF3D\\uDF50\\uDF5D-\\uDF61]|\\uD805[\\uDC00-\\uDC34\\uDC47-\\uDC4A\\uDC80-\\uDCAF\\uDCC4\\uDCC5\\uDCC7\\uDD80-\\uDDAE\\uDDD8-\\uDDDB\\uDE00-\\uDE2F\\uDE44\\uDE80-\\uDEAA\\uDF00-\\uDF19]|\\uD806[\\uDCA0-\\uDCDF\\uDCFF\\uDE00\\uDE0B-\\uDE32\\uDE3A\\uDE50\\uDE5C-\\uDE83\\uDE86-\\uDE89\\uDEC0-\\uDEF8]|\\uD807[\\uDC00-\\uDC08\\uDC0A-\\uDC2E\\uDC40\\uDC72-\\uDC8F\\uDD00-\\uDD06\\uDD08\\uDD09\\uDD0B-\\uDD30\\uDD46]|\\uD808[\\uDC00-\\uDF99]|\\uD809[\\uDC80-\\uDD43]|[\\uD80C\\uD81C-\\uD820\\uD840-\\uD868\\uD86A-\\uD86C\\uD86F-\\uD872\\uD874-\\uD879][\\uDC00-\\uDFFF]|\\uD80D[\\uDC00-\\uDC2E]|\\uD811[\\uDC00-\\uDE46]|\\uD81A[\\uDC00-\\uDE38\\uDE40-\\uDE5E\\uDED0-\\uDEED\\uDF00-\\uDF2F\\uDF40-\\uDF43\\uDF63-\\uDF77\\uDF7D-\\uDF8F]|\\uD81B[\\uDF00-\\uDF44\\uDF50\\uDF93-\\uDF9F\\uDFE0\\uDFE1]|\\uD821[\\uDC00-\\uDFEC]|\\uD822[\\uDC00-\\uDEF2]|\\uD82C[\\uDC00-\\uDD1E\\uDD70-\\uDEFB]|\\uD82F[\\uDC00-\\uDC6A\\uDC70-\\uDC7C\\uDC80-\\uDC88\\uDC90-\\uDC99]|\\uD835[\\uDC00-\\uDC54\\uDC56-\\uDC9C\\uDC9E\\uDC9F\\uDCA2\\uDCA5\\uDCA6\\uDCA9-\\uDCAC\\uDCAE-\\uDCB9\\uDCBB\\uDCBD-\\uDCC3\\uDCC5-\\uDD05\\uDD07-\\uDD0A\\uDD0D-\\uDD14\\uDD16-\\uDD1C\\uDD1E-\\uDD39\\uDD3B-\\uDD3E\\uDD40-\\uDD44\\uDD46\\uDD4A-\\uDD50\\uDD52-\\uDEA5\\uDEA8-\\uDEC0\\uDEC2-\\uDEDA\\uDEDC-\\uDEFA\\uDEFC-\\uDF14\\uDF16-\\uDF34\\uDF36-\\uDF4E\\uDF50-\\uDF6E\\uDF70-\\uDF88\\uDF8A-\\uDFA8\\uDFAA-\\uDFC2\\uDFC4-\\uDFCB]|\\uD83A[\\uDC00-\\uDCC4\\uDD00-\\uDD43]|\\uD83B[\\uDE00-\\uDE03\\uDE05-\\uDE1F\\uDE21\\uDE22\\uDE24\\uDE27\\uDE29-\\uDE32\\uDE34-\\uDE37\\uDE39\\uDE3B\\uDE42\\uDE47\\uDE49\\uDE4B\\uDE4D-\\uDE4F\\uDE51\\uDE52\\uDE54\\uDE57\\uDE59\\uDE5B\\uDE5D\\uDE5F\\uDE61\\uDE62\\uDE64\\uDE67-\\uDE6A\\uDE6C-\\uDE72\\uDE74-\\uDE77\\uDE79-\\uDE7C\\uDE7E\\uDE80-\\uDE89\\uDE8B-\\uDE9B\\uDEA1-\\uDEA3\\uDEA5-\\uDEA9\\uDEAB-\\uDEBB]|\\uD869[\\uDC00-\\uDED6\\uDF00-\\uDFFF]|\\uD86D[\\uDC00-\\uDF34\\uDF40-\\uDFFF]|\\uD86E[\\uDC00-\\uDC1D\\uDC20-\\uDFFF]|\\uD873[\\uDC00-\\uDEA1\\uDEB0-\\uDFFF]|\\uD87A[\\uDC00-\\uDFE0]|\\uD87E[\\uDC00-\\uDE1D])\\S*/g;\n/**\n * Transforms text to title case.\n * Capitalizes the first letter of each word and transforms the\n * rest of the word to lower case.\n * Words are delimited by any whitespace character, such as a space, tab, or line-feed character.\n *\n * @see `LowerCasePipe`\n * @see `UpperCasePipe`\n *\n * @usageNotes\n * The following example shows the result of transforming various strings into title case.\n *\n * <code-example path=\"common/pipes/ts/titlecase_pipe.ts\" region='TitleCasePipe'></code-example>\n *\n * @ngModule CommonModule\n * @publicApi\n */\n\nvar TitleCasePipe = /*#__PURE__*/function () {\n  function TitleCasePipe() {\n    _classCallCheck(this, TitleCasePipe);\n  }\n\n  _createClass(TitleCasePipe, [{\n    key: \"transform\",\n    value: function transform(value) {\n      if (value == null) return null;\n\n      if (typeof value !== 'string') {\n        throw invalidPipeArgumentError(TitleCasePipe, value);\n      }\n\n      return value.replace(unicodeWordMatch, function (txt) {\n        return txt[0].toUpperCase() + txt.substr(1).toLowerCase();\n      });\n    }\n  }]);\n\n  return TitleCasePipe;\n}();\n\nTitleCasePipe.decorators = [{\n  type: Pipe,\n  args: [{\n    name: 'titlecase'\n  }]\n}];\n/**\n * Transforms text to all upper case.\n * @see `LowerCasePipe`\n * @see `TitleCasePipe`\n *\n * @ngModule CommonModule\n * @publicApi\n */\n\nvar UpperCasePipe = /*#__PURE__*/function () {\n  function UpperCasePipe() {\n    _classCallCheck(this, UpperCasePipe);\n  }\n\n  _createClass(UpperCasePipe, [{\n    key: \"transform\",\n    value: function transform(value) {\n      if (value == null) return null;\n\n      if (typeof value !== 'string') {\n        throw invalidPipeArgumentError(UpperCasePipe, value);\n      }\n\n      return value.toUpperCase();\n    }\n  }]);\n\n  return UpperCasePipe;\n}();\n\nUpperCasePipe.decorators = [{\n  type: Pipe,\n  args: [{\n    name: 'uppercase'\n  }]\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// clang-format off\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a date value according to locale rules.\n *\n * Only the `en-US` locale data comes with Angular. To localize dates\n * in another language, you must import the corresponding locale data.\n * See the [I18n guide](guide/i18n#i18n-pipes) for more information.\n *\n * @see `formatDate()`\n *\n *\n * @usageNotes\n *\n * The result of this pipe is not reevaluated when the input is mutated. To avoid the need to\n * reformat the date on every change-detection cycle, treat the date as an immutable object\n * and change the reference when the pipe needs to run again.\n *\n * ### Pre-defined format options\n *\n * Examples are given in `en-US` locale.\n *\n * - `'short'`: equivalent to `'M/d/yy, h:mm a'` (`6/15/15, 9:03 AM`).\n * - `'medium'`: equivalent to `'MMM d, y, h:mm:ss a'` (`Jun 15, 2015, 9:03:01 AM`).\n * - `'long'`: equivalent to `'MMMM d, y, h:mm:ss a z'` (`June 15, 2015 at 9:03:01 AM\n * GMT+1`).\n * - `'full'`: equivalent to `'EEEE, MMMM d, y, h:mm:ss a zzzz'` (`Monday, June 15, 2015 at\n * 9:03:01 AM GMT+01:00`).\n * - `'shortDate'`: equivalent to `'M/d/yy'` (`6/15/15`).\n * - `'mediumDate'`: equivalent to `'MMM d, y'` (`Jun 15, 2015`).\n * - `'longDate'`: equivalent to `'MMMM d, y'` (`June 15, 2015`).\n * - `'fullDate'`: equivalent to `'EEEE, MMMM d, y'` (`Monday, June 15, 2015`).\n * - `'shortTime'`: equivalent to `'h:mm a'` (`9:03 AM`).\n * - `'mediumTime'`: equivalent to `'h:mm:ss a'` (`9:03:01 AM`).\n * - `'longTime'`: equivalent to `'h:mm:ss a z'` (`9:03:01 AM GMT+1`).\n * - `'fullTime'`: equivalent to `'h:mm:ss a zzzz'` (`9:03:01 AM GMT+01:00`).\n *\n * ### Custom format options\n *\n * You can construct a format string using symbols to specify the components\n * of a date-time value, as described in the following table.\n * Format details depend on the locale.\n * Fields marked with (*) are only available in the extra data set for the given locale.\n *\n *  | Field type         | Format      | Description                                                   | Example Value                                              |\n *  |--------------------|-------------|---------------------------------------------------------------|------------------------------------------------------------|\n *  | Era                | G, GG & GGG | Abbreviated                                                   | AD                                                         |\n *  |                    | GGGG        | Wide                                                          | Anno Domini                                                |\n *  |                    | GGGGG       | Narrow                                                        | A                                                          |\n *  | Year               | y           | Numeric: minimum digits                                       | 2, 20, 201, 2017, 20173                                    |\n *  |                    | yy          | Numeric: 2 digits + zero padded                               | 02, 20, 01, 17, 73                                         |\n *  |                    | yyy         | Numeric: 3 digits + zero padded                               | 002, 020, 201, 2017, 20173                                 |\n *  |                    | yyyy        | Numeric: 4 digits or more + zero padded                       | 0002, 0020, 0201, 2017, 20173                              |\n *  | Week-numbering year| Y           | Numeric: minimum digits                                       | 2, 20, 201, 2017, 20173                                    |\n *  |                    | YY          | Numeric: 2 digits + zero padded                               | 02, 20, 01, 17, 73                                         |\n *  |                    | YYY         | Numeric: 3 digits + zero padded                               | 002, 020, 201, 2017, 20173                                 |\n *  |                    | YYYY        | Numeric: 4 digits or more + zero padded                       | 0002, 0020, 0201, 2017, 20173                              |\n *  | Month              | M           | Numeric: 1 digit                                              | 9, 12                                                      |\n *  |                    | MM          | Numeric: 2 digits + zero padded                               | 09, 12                                                     |\n *  |                    | MMM         | Abbreviated                                                   | Sep                                                        |\n *  |                    | MMMM        | Wide                                                          | September                                                  |\n *  |                    | MMMMM       | Narrow                                                        | S                                                          |\n *  | Month standalone   | L           | Numeric: 1 digit                                              | 9, 12                                                      |\n *  |                    | LL          | Numeric: 2 digits + zero padded                               | 09, 12                                                     |\n *  |                    | LLL         | Abbreviated                                                   | Sep                                                        |\n *  |                    | LLLL        | Wide                                                          | September                                                  |\n *  |                    | LLLLL       | Narrow                                                        | S                                                          |\n *  | Week of year       | w           | Numeric: minimum digits                                       | 1... 53                                                    |\n *  |                    | ww          | Numeric: 2 digits + zero padded                               | 01... 53                                                   |\n *  | Week of month      | W           | Numeric: 1 digit                                              | 1... 5                                                     |\n *  | Day of month       | d           | Numeric: minimum digits                                       | 1                                                          |\n *  |                    | dd          | Numeric: 2 digits + zero padded                               | 01                                                          |\n *  | Week day           | E, EE & EEE | Abbreviated                                                   | Tue                                                        |\n *  |                    | EEEE        | Wide                                                          | Tuesday                                                    |\n *  |                    | EEEEE       | Narrow                                                        | T                                                          |\n *  |                    | EEEEEE      | Short                                                         | Tu                                                         |\n *  | Period             | a, aa & aaa | Abbreviated                                                   | am/pm or AM/PM                                             |\n *  |                    | aaaa        | Wide (fallback to `a` when missing)                           | ante meridiem/post meridiem                                |\n *  |                    | aaaaa       | Narrow                                                        | a/p                                                        |\n *  | Period*            | B, BB & BBB | Abbreviated                                                   | mid.                                                       |\n *  |                    | BBBB        | Wide                                                          | am, pm, midnight, noon, morning, afternoon, evening, night |\n *  |                    | BBBBB       | Narrow                                                        | md                                                         |\n *  | Period standalone* | b, bb & bbb | Abbreviated                                                   | mid.                                                       |\n *  |                    | bbbb        | Wide                                                          | am, pm, midnight, noon, morning, afternoon, evening, night |\n *  |                    | bbbbb       | Narrow                                                        | md                                                         |\n *  | Hour 1-12          | h           | Numeric: minimum digits                                       | 1, 12                                                      |\n *  |                    | hh          | Numeric: 2 digits + zero padded                               | 01, 12                                                     |\n *  | Hour 0-23          | H           | Numeric: minimum digits                                       | 0, 23                                                      |\n *  |                    | HH          | Numeric: 2 digits + zero padded                               | 00, 23                                                     |\n *  | Minute             | m           | Numeric: minimum digits                                       | 8, 59                                                      |\n *  |                    | mm          | Numeric: 2 digits + zero padded                               | 08, 59                                                     |\n *  | Second             | s           | Numeric: minimum digits                                       | 0... 59                                                    |\n *  |                    | ss          | Numeric: 2 digits + zero padded                               | 00... 59                                                   |\n *  | Fractional seconds | S           | Numeric: 1 digit                                              | 0... 9                                                     |\n *  |                    | SS          | Numeric: 2 digits + zero padded                               | 00... 99                                                   |\n *  |                    | SSS         | Numeric: 3 digits + zero padded (= milliseconds)              | 000... 999                                                 |\n *  | Zone               | z, zz & zzz | Short specific non location format (fallback to O)            | GMT-8                                                      |\n *  |                    | zzzz        | Long specific non location format (fallback to OOOO)          | GMT-08:00                                                  |\n *  |                    | Z, ZZ & ZZZ | ISO8601 basic format                                          | -0800                                                      |\n *  |                    | ZZZZ        | Long localized GMT format                                     | GMT-8:00                                                   |\n *  |                    | ZZZZZ       | ISO8601 extended format + Z indicator for offset 0 (= XXXXX)  | -08:00                                                     |\n *  |                    | O, OO & OOO | Short localized GMT format                                    | GMT-8                                                      |\n *  |                    | OOOO        | Long localized GMT format                                     | GMT-08:00                                                  |\n *\n * Note that timezone correction is not applied to an ISO string that has no time component, such as \"2016-09-19\"\n *\n * ### Format examples\n *\n * These examples transform a date into various formats,\n * assuming that `dateObj` is a JavaScript `Date` object for\n * year: 2015, month: 6, day: 15, hour: 21, minute: 43, second: 11,\n * given in the local time for the `en-US` locale.\n *\n * ```\n * {{ dateObj | date }}               // output is 'Jun 15, 2015'\n * {{ dateObj | date:'medium' }}      // output is 'Jun 15, 2015, 9:43:11 PM'\n * {{ dateObj | date:'shortTime' }}   // output is '9:43 PM'\n * {{ dateObj | date:'mm:ss' }}       // output is '43:11'\n * ```\n *\n * ### Usage example\n *\n * The following component uses a date pipe to display the current date in different formats.\n *\n * ```\n * @Component({\n *  selector: 'date-pipe',\n *  template: `<div>\n *    <p>Today is {{today | date}}</p>\n *    <p>Or if you prefer, {{today | date:'fullDate'}}</p>\n *    <p>The time is {{today | date:'h:mm a z'}}</p>\n *  </div>`\n * })\n * // Get the current date and time as a date-time value.\n * export class DatePipeComponent {\n *   today: number = Date.now();\n * }\n * ```\n *\n * @publicApi\n */\n// clang-format on\n\nvar DatePipe = /*#__PURE__*/function () {\n  function DatePipe(locale) {\n    _classCallCheck(this, DatePipe);\n\n    this.locale = locale;\n  }\n\n  _createClass(DatePipe, [{\n    key: \"transform\",\n    value: function transform(value) {\n      var format = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'mediumDate';\n      var timezone = arguments.length > 2 ? arguments[2] : undefined;\n      var locale = arguments.length > 3 ? arguments[3] : undefined;\n      if (value == null || value === '' || value !== value) return null;\n\n      try {\n        return formatDate(value, format, locale || this.locale, timezone);\n      } catch (error) {\n        throw invalidPipeArgumentError(DatePipe, error.message);\n      }\n    }\n  }]);\n\n  return DatePipe;\n}();\n\nDatePipe.decorators = [{\n  type: Pipe,\n  args: [{\n    name: 'date',\n    pure: true\n  }]\n}];\n\nDatePipe.ctorParameters = function () {\n  return [{\n    type: String,\n    decorators: [{\n      type: Inject,\n      args: [LOCALE_ID]\n    }]\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar _INTERPOLATION_REGEXP = /#/g;\n/**\n * @ngModule CommonModule\n * @description\n *\n * Maps a value to a string that pluralizes the value according to locale rules.\n *\n * @usageNotes\n *\n * ### Example\n *\n * {@example common/pipes/ts/i18n_pipe.ts region='I18nPluralPipeComponent'}\n *\n * @publicApi\n */\n\nvar I18nPluralPipe = /*#__PURE__*/function () {\n  function I18nPluralPipe(_localization) {\n    _classCallCheck(this, I18nPluralPipe);\n\n    this._localization = _localization;\n  }\n  /**\n   * @param value the number to be formatted\n   * @param pluralMap an object that mimics the ICU format, see\n   * http://userguide.icu-project.org/formatparse/messages.\n   * @param locale a `string` defining the locale to use (uses the current {@link LOCALE_ID} by\n   * default).\n   */\n\n\n  _createClass(I18nPluralPipe, [{\n    key: \"transform\",\n    value: function transform(value, pluralMap, locale) {\n      if (value == null) return '';\n\n      if (_typeof(pluralMap) !== 'object' || pluralMap === null) {\n        throw invalidPipeArgumentError(I18nPluralPipe, pluralMap);\n      }\n\n      var key = getPluralCategory(value, Object.keys(pluralMap), this._localization, locale);\n      return pluralMap[key].replace(_INTERPOLATION_REGEXP, value.toString());\n    }\n  }]);\n\n  return I18nPluralPipe;\n}();\n\nI18nPluralPipe.decorators = [{\n  type: Pipe,\n  args: [{\n    name: 'i18nPlural',\n    pure: true\n  }]\n}];\n\nI18nPluralPipe.ctorParameters = function () {\n  return [{\n    type: NgLocalization\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Generic selector that displays the string that matches the current value.\n *\n * If none of the keys of the `mapping` match the `value`, then the content\n * of the `other` key is returned when present, otherwise an empty string is returned.\n *\n * @usageNotes\n *\n * ### Example\n *\n * {@example common/pipes/ts/i18n_pipe.ts region='I18nSelectPipeComponent'}\n *\n * @publicApi\n */\n\n\nvar I18nSelectPipe = /*#__PURE__*/function () {\n  function I18nSelectPipe() {\n    _classCallCheck(this, I18nSelectPipe);\n  }\n\n  _createClass(I18nSelectPipe, [{\n    key: \"transform\",\n    value:\n    /**\n     * @param value a string to be internationalized.\n     * @param mapping an object that indicates the text that should be displayed\n     * for different values of the provided `value`.\n     */\n    function transform(value, mapping) {\n      if (value == null) return '';\n\n      if (_typeof(mapping) !== 'object' || typeof value !== 'string') {\n        throw invalidPipeArgumentError(I18nSelectPipe, mapping);\n      }\n\n      if (mapping.hasOwnProperty(value)) {\n        return mapping[value];\n      }\n\n      if (mapping.hasOwnProperty('other')) {\n        return mapping['other'];\n      }\n\n      return '';\n    }\n  }]);\n\n  return I18nSelectPipe;\n}();\n\nI18nSelectPipe.decorators = [{\n  type: Pipe,\n  args: [{\n    name: 'i18nSelect',\n    pure: true\n  }]\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Converts a value into its JSON-format representation.  Useful for debugging.\n *\n * @usageNotes\n *\n * The following component uses a JSON pipe to convert an object\n * to JSON format, and displays the string in both formats for comparison.\n *\n * {@example common/pipes/ts/json_pipe.ts region='JsonPipe'}\n *\n * @publicApi\n */\n\nvar JsonPipe = /*#__PURE__*/function () {\n  function JsonPipe() {\n    _classCallCheck(this, JsonPipe);\n  }\n\n  _createClass(JsonPipe, [{\n    key: \"transform\",\n    value:\n    /**\n     * @param value A value of any type to convert into a JSON-format string.\n     */\n    function transform(value) {\n      return JSON.stringify(value, null, 2);\n    }\n  }]);\n\n  return JsonPipe;\n}();\n\nJsonPipe.decorators = [{\n  type: Pipe,\n  args: [{\n    name: 'json',\n    pure: false\n  }]\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nfunction makeKeyValuePair(key, value) {\n  return {\n    key: key,\n    value: value\n  };\n}\n/**\n * @ngModule CommonModule\n * @description\n *\n * Transforms Object or Map into an array of key value pairs.\n *\n * The output array will be ordered by keys.\n * By default the comparator will be by Unicode point value.\n * You can optionally pass a compareFn if your keys are complex types.\n *\n * @usageNotes\n * ### Examples\n *\n * This examples show how an Object or a Map can be iterated by ngFor with the use of this\n * keyvalue pipe.\n *\n * {@example common/pipes/ts/keyvalue_pipe.ts region='KeyValuePipe'}\n *\n * @publicApi\n */\n\n\nvar KeyValuePipe = /*#__PURE__*/function () {\n  function KeyValuePipe(differs) {\n    _classCallCheck(this, KeyValuePipe);\n\n    this.differs = differs;\n    this.keyValues = [];\n  }\n\n  _createClass(KeyValuePipe, [{\n    key: \"transform\",\n    value: function transform(input) {\n      var _this15 = this;\n\n      var compareFn = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : defaultComparator;\n\n      if (!input || !(input instanceof Map) && _typeof(input) !== 'object') {\n        return null;\n      }\n\n      if (!this.differ) {\n        // make a differ for whatever type we've been passed in\n        this.differ = this.differs.find(input).create();\n      }\n\n      var differChanges = this.differ.diff(input);\n\n      if (differChanges) {\n        this.keyValues = [];\n        differChanges.forEachItem(function (r) {\n          _this15.keyValues.push(makeKeyValuePair(r.key, r.currentValue));\n        });\n        this.keyValues.sort(compareFn);\n      }\n\n      return this.keyValues;\n    }\n  }]);\n\n  return KeyValuePipe;\n}();\n\nKeyValuePipe.decorators = [{\n  type: Pipe,\n  args: [{\n    name: 'keyvalue',\n    pure: false\n  }]\n}];\n\nKeyValuePipe.ctorParameters = function () {\n  return [{\n    type: KeyValueDiffers\n  }];\n};\n\nfunction defaultComparator(keyValueA, keyValueB) {\n  var a = keyValueA.key;\n  var b = keyValueB.key; // if same exit with 0;\n\n  if (a === b) return 0; // make sure that undefined are at the end of the sort.\n\n  if (a === undefined) return 1;\n  if (b === undefined) return -1; // make sure that nulls are at the end of the sort.\n\n  if (a === null) return 1;\n  if (b === null) return -1;\n\n  if (typeof a == 'string' && typeof b == 'string') {\n    return a < b ? -1 : 1;\n  }\n\n  if (typeof a == 'number' && typeof b == 'number') {\n    return a - b;\n  }\n\n  if (typeof a == 'boolean' && typeof b == 'boolean') {\n    return a < b ? -1 : 1;\n  } // `a` and `b` are of different types. Compare their string values.\n\n\n  var aString = String(a);\n  var bString = String(b);\n  return aString == bString ? 0 : aString < bString ? -1 : 1;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Transforms a number into a string,\n * formatted according to locale rules that determine group sizing and\n * separator, decimal-point character, and other locale-specific\n * configurations.\n *\n * If no parameters are specified, the function rounds off to the nearest value using this\n * [rounding method](https://en.wikibooks.org/wiki/Arithmetic/Rounding).\n * The behavior differs from that of the JavaScript ```Math.round()``` function.\n * In the following case for example, the pipe rounds down where\n * ```Math.round()``` rounds up:\n *\n * ```html\n * -2.5 | number:'1.0-0'\n * > -3\n * Math.round(-2.5)\n * > -2\n * ```\n *\n * @see `formatNumber()`\n *\n * @usageNotes\n * The following code shows how the pipe transforms numbers\n * into text strings, according to various format specifications,\n * where the caller's default locale is `en-US`.\n *\n * ### Example\n *\n * <code-example path=\"common/pipes/ts/number_pipe.ts\" region='NumberPipe'></code-example>\n *\n * @publicApi\n */\n\n\nvar DecimalPipe = /*#__PURE__*/function () {\n  function DecimalPipe(_locale) {\n    _classCallCheck(this, DecimalPipe);\n\n    this._locale = _locale;\n  }\n\n  _createClass(DecimalPipe, [{\n    key: \"transform\",\n    value: function transform(value, digitsInfo, locale) {\n      if (!isValue(value)) return null;\n      locale = locale || this._locale;\n\n      try {\n        var num = strToNumber(value);\n        return formatNumber(num, locale, digitsInfo);\n      } catch (error) {\n        throw invalidPipeArgumentError(DecimalPipe, error.message);\n      }\n    }\n  }]);\n\n  return DecimalPipe;\n}();\n\nDecimalPipe.decorators = [{\n  type: Pipe,\n  args: [{\n    name: 'number'\n  }]\n}];\n\nDecimalPipe.ctorParameters = function () {\n  return [{\n    type: String,\n    decorators: [{\n      type: Inject,\n      args: [LOCALE_ID]\n    }]\n  }];\n};\n/**\n * @ngModule CommonModule\n * @description\n *\n * Transforms a number to a percentage\n * string, formatted according to locale rules that determine group sizing and\n * separator, decimal-point character, and other locale-specific\n * configurations.\n *\n * @see `formatPercent()`\n *\n * @usageNotes\n * The following code shows how the pipe transforms numbers\n * into text strings, according to various format specifications,\n * where the caller's default locale is `en-US`.\n *\n * <code-example path=\"common/pipes/ts/percent_pipe.ts\" region='PercentPipe'></code-example>\n *\n * @publicApi\n */\n\n\nvar PercentPipe = /*#__PURE__*/function () {\n  function PercentPipe(_locale) {\n    _classCallCheck(this, PercentPipe);\n\n    this._locale = _locale;\n  }\n\n  _createClass(PercentPipe, [{\n    key: \"transform\",\n    value: function transform(value, digitsInfo, locale) {\n      if (!isValue(value)) return null;\n      locale = locale || this._locale;\n\n      try {\n        var num = strToNumber(value);\n        return formatPercent(num, locale, digitsInfo);\n      } catch (error) {\n        throw invalidPipeArgumentError(PercentPipe, error.message);\n      }\n    }\n  }]);\n\n  return PercentPipe;\n}();\n\nPercentPipe.decorators = [{\n  type: Pipe,\n  args: [{\n    name: 'percent'\n  }]\n}];\n\nPercentPipe.ctorParameters = function () {\n  return [{\n    type: String,\n    decorators: [{\n      type: Inject,\n      args: [LOCALE_ID]\n    }]\n  }];\n};\n/**\n * @ngModule CommonModule\n * @description\n *\n * Transforms a number to a currency string, formatted according to locale rules\n * that determine group sizing and separator, decimal-point character,\n * and other locale-specific configurations.\n *\n * {@a currency-code-deprecation}\n * <div class=\"alert is-helpful\">\n *\n * **Deprecation notice:**\n *\n * The default currency code is currently always `USD` but this is deprecated from v9.\n *\n * **In v11 the default currency code will be taken from the current locale identified by\n * the `LOCAL_ID` token. See the [i18n guide](guide/i18n#setting-up-the-locale-of-your-app) for\n * more information.**\n *\n * If you need the previous behavior then set it by creating a `DEFAULT_CURRENCY_CODE` provider in\n * your application `NgModule`:\n *\n * ```ts\n * {provide: DEFAULT_CURRENCY_CODE, useValue: 'USD'}\n * ```\n *\n * </div>\n *\n * @see `getCurrencySymbol()`\n * @see `formatCurrency()`\n *\n * @usageNotes\n * The following code shows how the pipe transforms numbers\n * into text strings, according to various format specifications,\n * where the caller's default locale is `en-US`.\n *\n * <code-example path=\"common/pipes/ts/currency_pipe.ts\" region='CurrencyPipe'></code-example>\n *\n * @publicApi\n */\n\n\nvar CurrencyPipe = /*#__PURE__*/function () {\n  function CurrencyPipe(_locale) {\n    var _defaultCurrencyCode = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'USD';\n\n    _classCallCheck(this, CurrencyPipe);\n\n    this._locale = _locale;\n    this._defaultCurrencyCode = _defaultCurrencyCode;\n  }\n\n  _createClass(CurrencyPipe, [{\n    key: \"transform\",\n    value: function transform(value, currencyCode) {\n      var display = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 'symbol';\n      var digitsInfo = arguments.length > 3 ? arguments[3] : undefined;\n      var locale = arguments.length > 4 ? arguments[4] : undefined;\n      if (!isValue(value)) return null;\n      locale = locale || this._locale;\n\n      if (typeof display === 'boolean') {\n        if (console && console.warn) {\n          console.warn(\"Warning: the currency pipe has been changed in Angular v5. The symbolDisplay option (third parameter) is now a string instead of a boolean. The accepted values are \\\"code\\\", \\\"symbol\\\" or \\\"symbol-narrow\\\".\");\n        }\n\n        display = display ? 'symbol' : 'code';\n      }\n\n      var currency = currencyCode || this._defaultCurrencyCode;\n\n      if (display !== 'code') {\n        if (display === 'symbol' || display === 'symbol-narrow') {\n          currency = getCurrencySymbol(currency, display === 'symbol' ? 'wide' : 'narrow', locale);\n        } else {\n          currency = display;\n        }\n      }\n\n      try {\n        var num = strToNumber(value);\n        return formatCurrency(num, locale, currency, currencyCode, digitsInfo);\n      } catch (error) {\n        throw invalidPipeArgumentError(CurrencyPipe, error.message);\n      }\n    }\n  }]);\n\n  return CurrencyPipe;\n}();\n\nCurrencyPipe.decorators = [{\n  type: Pipe,\n  args: [{\n    name: 'currency'\n  }]\n}];\n\nCurrencyPipe.ctorParameters = function () {\n  return [{\n    type: String,\n    decorators: [{\n      type: Inject,\n      args: [LOCALE_ID]\n    }]\n  }, {\n    type: String,\n    decorators: [{\n      type: Inject,\n      args: [DEFAULT_CURRENCY_CODE]\n    }]\n  }];\n};\n\nfunction isValue(value) {\n  return !(value == null || value === '' || value !== value);\n}\n/**\n * Transforms a string into a number (if needed).\n */\n\n\nfunction strToNumber(value) {\n  // Convert strings to numbers\n  if (typeof value === 'string' && !isNaN(Number(value) - parseFloat(value))) {\n    return Number(value);\n  }\n\n  if (typeof value !== 'number') {\n    throw new Error(\"\".concat(value, \" is not a number\"));\n  }\n\n  return value;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Creates a new `Array` or `String` containing a subset (slice) of the elements.\n *\n * @usageNotes\n *\n * All behavior is based on the expected behavior of the JavaScript API `Array.prototype.slice()`\n * and `String.prototype.slice()`.\n *\n * When operating on an `Array`, the returned `Array` is always a copy even when all\n * the elements are being returned.\n *\n * When operating on a blank value, the pipe returns the blank value.\n *\n * ### List Example\n *\n * This `ngFor` example:\n *\n * {@example common/pipes/ts/slice_pipe.ts region='SlicePipe_list'}\n *\n * produces the following:\n *\n * ```html\n * <li>b</li>\n * <li>c</li>\n * ```\n *\n * ### String Examples\n *\n * {@example common/pipes/ts/slice_pipe.ts region='SlicePipe_string'}\n *\n * @publicApi\n */\n\n\nvar SlicePipe = /*#__PURE__*/function () {\n  function SlicePipe() {\n    _classCallCheck(this, SlicePipe);\n  }\n\n  _createClass(SlicePipe, [{\n    key: \"transform\",\n    value: function transform(value, start, end) {\n      if (value == null) return null;\n\n      if (!this.supports(value)) {\n        throw invalidPipeArgumentError(SlicePipe, value);\n      }\n\n      return value.slice(start, end);\n    }\n  }, {\n    key: \"supports\",\n    value: function supports(obj) {\n      return typeof obj === 'string' || Array.isArray(obj);\n    }\n  }]);\n\n  return SlicePipe;\n}();\n\nSlicePipe.decorators = [{\n  type: Pipe,\n  args: [{\n    name: 'slice',\n    pure: false\n  }]\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * A collection of Angular pipes that are likely to be used in each and every application.\n */\n\nvar COMMON_PIPES = [AsyncPipe, UpperCasePipe, LowerCasePipe, JsonPipe, SlicePipe, DecimalPipe, PercentPipe, TitleCasePipe, CurrencyPipe, DatePipe, I18nPluralPipe, I18nSelectPipe, KeyValuePipe];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// Note: This does not contain the location providers,\n// as they need some platform specific implementations to work.\n\n/**\n * Exports all the basic Angular directives and pipes,\n * such as `NgIf`, `NgForOf`, `DecimalPipe`, and so on.\n * Re-exported by `BrowserModule`, which is included automatically in the root\n * `AppModule` when you create a new app with the CLI `new` command.\n *\n * * The `providers` options configure the NgModule's injector to provide\n * localization dependencies to members.\n * * The `exports` options make the declared directives and pipes available for import\n * by other NgModules.\n *\n * @publicApi\n */\n\nvar CommonModule = /*#__PURE__*/_createClass(function CommonModule() {\n  _classCallCheck(this, CommonModule);\n});\n\nCommonModule.decorators = [{\n  type: NgModule,\n  args: [{\n    declarations: [COMMON_DIRECTIVES, COMMON_PIPES],\n    exports: [COMMON_DIRECTIVES, COMMON_PIPES],\n    providers: [{\n      provide: NgLocalization,\n      useClass: NgLocaleLocalization\n    }]\n  }]\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar PLATFORM_BROWSER_ID = 'browser';\nvar PLATFORM_SERVER_ID = 'server';\nvar PLATFORM_WORKER_APP_ID = 'browserWorkerApp';\nvar PLATFORM_WORKER_UI_ID = 'browserWorkerUi';\n/**\n * Returns whether a platform id represents a browser platform.\n * @publicApi\n */\n\nfunction isPlatformBrowser(platformId) {\n  return platformId === PLATFORM_BROWSER_ID;\n}\n/**\n * Returns whether a platform id represents a server platform.\n * @publicApi\n */\n\n\nfunction isPlatformServer(platformId) {\n  return platformId === PLATFORM_SERVER_ID;\n}\n/**\n * Returns whether a platform id represents a web worker app platform.\n * @publicApi\n */\n\n\nfunction isPlatformWorkerApp(platformId) {\n  return platformId === PLATFORM_WORKER_APP_ID;\n}\n/**\n * Returns whether a platform id represents a web worker UI platform.\n * @publicApi\n */\n\n\nfunction isPlatformWorkerUi(platformId) {\n  return platformId === PLATFORM_WORKER_UI_ID;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @publicApi\n */\n\n\nvar VERSION = new Version('11.0.2');\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Defines a scroll position manager. Implemented by `BrowserViewportScroller`.\n *\n * @publicApi\n */\n\nvar ViewportScroller = /*#__PURE__*/_createClass(function ViewportScroller() {\n  _classCallCheck(this, ViewportScroller);\n}); // De-sugared tree-shakable injection\n// See #23917\n\n/** @nocollapse */\n\n\nViewportScroller.ɵprov = ɵɵdefineInjectable({\n  token: ViewportScroller,\n  providedIn: 'root',\n  factory: function factory() {\n    return new BrowserViewportScroller(ɵɵinject(DOCUMENT), window, ɵɵinject(ErrorHandler));\n  }\n});\n/**\n * Manages the scroll position for a browser window.\n */\n\nvar BrowserViewportScroller = /*#__PURE__*/function () {\n  function BrowserViewportScroller(document, window, errorHandler) {\n    _classCallCheck(this, BrowserViewportScroller);\n\n    this.document = document;\n    this.window = window;\n    this.errorHandler = errorHandler;\n\n    this.offset = function () {\n      return [0, 0];\n    };\n  }\n  /**\n   * Configures the top offset used when scrolling to an anchor.\n   * @param offset A position in screen coordinates (a tuple with x and y values)\n   * or a function that returns the top offset position.\n   *\n   */\n\n\n  _createClass(BrowserViewportScroller, [{\n    key: \"setOffset\",\n    value: function setOffset(offset) {\n      if (Array.isArray(offset)) {\n        this.offset = function () {\n          return offset;\n        };\n      } else {\n        this.offset = offset;\n      }\n    }\n    /**\n     * Retrieves the current scroll position.\n     * @returns The position in screen coordinates.\n     */\n\n  }, {\n    key: \"getScrollPosition\",\n    value: function getScrollPosition() {\n      if (this.supportsScrolling()) {\n        return [this.window.scrollX, this.window.scrollY];\n      } else {\n        return [0, 0];\n      }\n    }\n    /**\n     * Sets the scroll position.\n     * @param position The new position in screen coordinates.\n     */\n\n  }, {\n    key: \"scrollToPosition\",\n    value: function scrollToPosition(position) {\n      if (this.supportsScrolling()) {\n        this.window.scrollTo(position[0], position[1]);\n      }\n    }\n    /**\n     * Scrolls to an anchor element.\n     * @param anchor The ID of the anchor element.\n     */\n\n  }, {\n    key: \"scrollToAnchor\",\n    value: function scrollToAnchor(anchor) {\n      if (this.supportsScrolling()) {\n        var elSelected = this.document.getElementById(anchor) || this.document.getElementsByName(anchor)[0];\n\n        if (elSelected) {\n          this.scrollToElement(elSelected);\n        }\n      }\n    }\n    /**\n     * Disables automatic scroll restoration provided by the browser.\n     */\n\n  }, {\n    key: \"setHistoryScrollRestoration\",\n    value: function setHistoryScrollRestoration(scrollRestoration) {\n      if (this.supportScrollRestoration()) {\n        var history = this.window.history;\n\n        if (history && history.scrollRestoration) {\n          history.scrollRestoration = scrollRestoration;\n        }\n      }\n    }\n  }, {\n    key: \"scrollToElement\",\n    value: function scrollToElement(el) {\n      var rect = el.getBoundingClientRect();\n      var left = rect.left + this.window.pageXOffset;\n      var top = rect.top + this.window.pageYOffset;\n      var offset = this.offset();\n      this.window.scrollTo(left - offset[0], top - offset[1]);\n    }\n    /**\n     * We only support scroll restoration when we can get a hold of window.\n     * This means that we do not support this behavior when running in a web worker.\n     *\n     * Lifting this restriction right now would require more changes in the dom adapter.\n     * Since webworkers aren't widely used, we will lift it once RouterScroller is\n     * battle-tested.\n     */\n\n  }, {\n    key: \"supportScrollRestoration\",\n    value: function supportScrollRestoration() {\n      try {\n        if (!this.window || !this.window.scrollTo) {\n          return false;\n        } // The `scrollRestoration` property could be on the `history` instance or its prototype.\n\n\n        var scrollRestorationDescriptor = getScrollRestorationProperty(this.window.history) || getScrollRestorationProperty(Object.getPrototypeOf(this.window.history)); // We can write to the `scrollRestoration` property if it is a writable data field or it has a\n        // setter function.\n\n        return !!scrollRestorationDescriptor && !!(scrollRestorationDescriptor.writable || scrollRestorationDescriptor.set);\n      } catch (_a) {\n        return false;\n      }\n    }\n  }, {\n    key: \"supportsScrolling\",\n    value: function supportsScrolling() {\n      try {\n        return !!this.window.scrollTo;\n      } catch (_a) {\n        return false;\n      }\n    }\n  }]);\n\n  return BrowserViewportScroller;\n}();\n\nfunction getScrollRestorationProperty(obj) {\n  return Object.getOwnPropertyDescriptor(obj, 'scrollRestoration');\n}\n/**\n * Provides an empty implementation of the viewport scroller.\n */\n\n\nvar NullViewportScroller = /*#__PURE__*/function () {\n  function NullViewportScroller() {\n    _classCallCheck(this, NullViewportScroller);\n  }\n\n  _createClass(NullViewportScroller, [{\n    key: \"setOffset\",\n    value:\n    /**\n     * Empty implementation\n     */\n    function setOffset(offset) {}\n    /**\n     * Empty implementation\n     */\n\n  }, {\n    key: \"getScrollPosition\",\n    value: function getScrollPosition() {\n      return [0, 0];\n    }\n    /**\n     * Empty implementation\n     */\n\n  }, {\n    key: \"scrollToPosition\",\n    value: function scrollToPosition(position) {}\n    /**\n     * Empty implementation\n     */\n\n  }, {\n    key: \"scrollToAnchor\",\n    value: function scrollToAnchor(anchor) {}\n    /**\n     * Empty implementation\n     */\n\n  }, {\n    key: \"setHistoryScrollRestoration\",\n    value: function setHistoryScrollRestoration(scrollRestoration) {}\n  }]);\n\n  return NullViewportScroller;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// This file only reexports content of the `src` folder. Keep it that way.\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\n\nexport { APP_BASE_HREF, AsyncPipe, CommonModule, CurrencyPipe, DOCUMENT, DatePipe, DecimalPipe, FormStyle, FormatWidth, HashLocationStrategy, I18nPluralPipe, I18nSelectPipe, JsonPipe, KeyValuePipe, LOCATION_INITIALIZED, Location, LocationStrategy, LowerCasePipe, NgClass, NgComponentOutlet, NgForOf, NgForOfContext, NgIf, NgIfContext, NgLocaleLocalization, NgLocalization, NgPlural, NgPluralCase, NgStyle, NgSwitch, NgSwitchCase, NgSwitchDefault, NgTemplateOutlet, NumberFormatStyle, NumberSymbol, PathLocationStrategy, PercentPipe, PlatformLocation, Plural, SlicePipe, TitleCasePipe, TranslationWidth, UpperCasePipe, VERSION, ViewportScroller, WeekDay, formatCurrency, formatDate, formatNumber, formatPercent, getCurrencySymbol, getLocaleCurrencyCode, getLocaleCurrencyName, getLocaleCurrencySymbol, getLocaleDateFormat, getLocaleDateTimeFormat, getLocaleDayNames, getLocaleDayPeriods, getLocaleDirection, getLocaleEraNames, getLocaleExtraDayPeriodRules, getLocaleExtraDayPeriods, getLocaleFirstDayOfWeek, getLocaleId, getLocaleMonthNames, getLocaleNumberFormat, getLocaleNumberSymbol, getLocalePluralCase, getLocaleTimeFormat, getLocaleWeekEndRange, getNumberOfCurrencyDigits, isPlatformBrowser, isPlatformServer, isPlatformWorkerApp, isPlatformWorkerUi, registerLocaleData, BrowserPlatformLocation as ɵBrowserPlatformLocation, DomAdapter as ɵDomAdapter, NullViewportScroller as ɵNullViewportScroller, PLATFORM_BROWSER_ID as ɵPLATFORM_BROWSER_ID, PLATFORM_SERVER_ID as ɵPLATFORM_SERVER_ID, PLATFORM_WORKER_APP_ID as ɵPLATFORM_WORKER_APP_ID, PLATFORM_WORKER_UI_ID as ɵPLATFORM_WORKER_UI_ID, useBrowserPlatformLocation as ɵangular_packages_common_common_a, createBrowserPlatformLocation as ɵangular_packages_common_common_b, createLocation as ɵangular_packages_common_common_c, provideLocationStrategy as ɵangular_packages_common_common_d, COMMON_DIRECTIVES as ɵangular_packages_common_common_e, COMMON_PIPES as ɵangular_packages_common_common_f, getDOM as ɵgetDOM, parseCookieValue as ɵparseCookieValue, setRootDomAdapter as ɵsetRootDomAdapter };","function _typeof(obj) { \"@babel/helpers - typeof\"; return _typeof = \"function\" == typeof Symbol && \"symbol\" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && \"function\" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }, _typeof(obj); }\n\n/*! *****************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\n\n/* global Reflect, Promise */\nvar _extendStatics = function extendStatics(d, b) {\n  _extendStatics = Object.setPrototypeOf || {\n    __proto__: []\n  } instanceof Array && function (d, b) {\n    d.__proto__ = b;\n  } || function (d, b) {\n    for (var p in b) {\n      if (b.hasOwnProperty(p)) d[p] = b[p];\n    }\n  };\n\n  return _extendStatics(d, b);\n};\n\nexport function __extends(d, b) {\n  _extendStatics(d, b);\n\n  function __() {\n    this.constructor = d;\n  }\n\n  d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n}\n\nvar _assign = function __assign() {\n  _assign = Object.assign || function __assign(t) {\n    for (var s, i = 1, n = arguments.length; i < n; i++) {\n      s = arguments[i];\n\n      for (var p in s) {\n        if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\n      }\n    }\n\n    return t;\n  };\n\n  return _assign.apply(this, arguments);\n};\n\nexport { _assign as __assign };\nexport function __rest(s, e) {\n  var t = {};\n\n  for (var p in s) {\n    if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0) t[p] = s[p];\n  }\n\n  if (s != null && typeof Object.getOwnPropertySymbols === \"function\") for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\n    if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i])) t[p[i]] = s[p[i]];\n  }\n  return t;\n}\nexport function __decorate(decorators, target, key, desc) {\n  var c = arguments.length,\n      r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc,\n      d;\n  if ((typeof Reflect === \"undefined\" ? \"undefined\" : _typeof(Reflect)) === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);else for (var i = decorators.length - 1; i >= 0; i--) {\n    if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\n  }\n  return c > 3 && r && Object.defineProperty(target, key, r), r;\n}\nexport function __param(paramIndex, decorator) {\n  return function (target, key) {\n    decorator(target, key, paramIndex);\n  };\n}\nexport function __metadata(metadataKey, metadataValue) {\n  if ((typeof Reflect === \"undefined\" ? \"undefined\" : _typeof(Reflect)) === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\n}\nexport function __awaiter(thisArg, _arguments, P, generator) {\n  function adopt(value) {\n    return value instanceof P ? value : new P(function (resolve) {\n      resolve(value);\n    });\n  }\n\n  return new (P || (P = Promise))(function (resolve, reject) {\n    function fulfilled(value) {\n      try {\n        step(generator.next(value));\n      } catch (e) {\n        reject(e);\n      }\n    }\n\n    function rejected(value) {\n      try {\n        step(generator[\"throw\"](value));\n      } catch (e) {\n        reject(e);\n      }\n    }\n\n    function step(result) {\n      result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected);\n    }\n\n    step((generator = generator.apply(thisArg, _arguments || [])).next());\n  });\n}\nexport function __generator(thisArg, body) {\n  var _ = {\n    label: 0,\n    sent: function sent() {\n      if (t[0] & 1) throw t[1];\n      return t[1];\n    },\n    trys: [],\n    ops: []\n  },\n      f,\n      y,\n      t,\n      g;\n  return g = {\n    next: verb(0),\n    \"throw\": verb(1),\n    \"return\": verb(2)\n  }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function () {\n    return this;\n  }), g;\n\n  function verb(n) {\n    return function (v) {\n      return step([n, v]);\n    };\n  }\n\n  function step(op) {\n    if (f) throw new TypeError(\"Generator is already executing.\");\n\n    while (_) {\n      try {\n        if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\n        if (y = 0, t) op = [op[0] & 2, t.value];\n\n        switch (op[0]) {\n          case 0:\n          case 1:\n            t = op;\n            break;\n\n          case 4:\n            _.label++;\n            return {\n              value: op[1],\n              done: false\n            };\n\n          case 5:\n            _.label++;\n            y = op[1];\n            op = [0];\n            continue;\n\n          case 7:\n            op = _.ops.pop();\n\n            _.trys.pop();\n\n            continue;\n\n          default:\n            if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) {\n              _ = 0;\n              continue;\n            }\n\n            if (op[0] === 3 && (!t || op[1] > t[0] && op[1] < t[3])) {\n              _.label = op[1];\n              break;\n            }\n\n            if (op[0] === 6 && _.label < t[1]) {\n              _.label = t[1];\n              t = op;\n              break;\n            }\n\n            if (t && _.label < t[2]) {\n              _.label = t[2];\n\n              _.ops.push(op);\n\n              break;\n            }\n\n            if (t[2]) _.ops.pop();\n\n            _.trys.pop();\n\n            continue;\n        }\n\n        op = body.call(thisArg, _);\n      } catch (e) {\n        op = [6, e];\n        y = 0;\n      } finally {\n        f = t = 0;\n      }\n    }\n\n    if (op[0] & 5) throw op[1];\n    return {\n      value: op[0] ? op[1] : void 0,\n      done: true\n    };\n  }\n}\nexport function __createBinding(o, m, k, k2) {\n  if (k2 === undefined) k2 = k;\n  o[k2] = m[k];\n}\nexport function __exportStar(m, exports) {\n  for (var p in m) {\n    if (p !== \"default\" && !exports.hasOwnProperty(p)) exports[p] = m[p];\n  }\n}\nexport function __values(o) {\n  var s = typeof Symbol === \"function\" && Symbol.iterator,\n      m = s && o[s],\n      i = 0;\n  if (m) return m.call(o);\n  if (o && typeof o.length === \"number\") return {\n    next: function next() {\n      if (o && i >= o.length) o = void 0;\n      return {\n        value: o && o[i++],\n        done: !o\n      };\n    }\n  };\n  throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\n}\nexport function __read(o, n) {\n  var m = typeof Symbol === \"function\" && o[Symbol.iterator];\n  if (!m) return o;\n  var i = m.call(o),\n      r,\n      ar = [],\n      e;\n\n  try {\n    while ((n === void 0 || n-- > 0) && !(r = i.next()).done) {\n      ar.push(r.value);\n    }\n  } catch (error) {\n    e = {\n      error: error\n    };\n  } finally {\n    try {\n      if (r && !r.done && (m = i[\"return\"])) m.call(i);\n    } finally {\n      if (e) throw e.error;\n    }\n  }\n\n  return ar;\n}\nexport function __spread() {\n  for (var ar = [], i = 0; i < arguments.length; i++) {\n    ar = ar.concat(__read(arguments[i]));\n  }\n\n  return ar;\n}\nexport function __spreadArrays() {\n  for (var s = 0, i = 0, il = arguments.length; i < il; i++) {\n    s += arguments[i].length;\n  }\n\n  for (var r = Array(s), k = 0, i = 0; i < il; i++) {\n    for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++) {\n      r[k] = a[j];\n    }\n  }\n\n  return r;\n}\n;\nexport function __await(v) {\n  return this instanceof __await ? (this.v = v, this) : new __await(v);\n}\nexport function __asyncGenerator(thisArg, _arguments, generator) {\n  if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n  var g = generator.apply(thisArg, _arguments || []),\n      i,\n      q = [];\n  return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () {\n    return this;\n  }, i;\n\n  function verb(n) {\n    if (g[n]) i[n] = function (v) {\n      return new Promise(function (a, b) {\n        q.push([n, v, a, b]) > 1 || resume(n, v);\n      });\n    };\n  }\n\n  function resume(n, v) {\n    try {\n      step(g[n](v));\n    } catch (e) {\n      settle(q[0][3], e);\n    }\n  }\n\n  function step(r) {\n    r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r);\n  }\n\n  function fulfill(value) {\n    resume(\"next\", value);\n  }\n\n  function reject(value) {\n    resume(\"throw\", value);\n  }\n\n  function settle(f, v) {\n    if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]);\n  }\n}\nexport function __asyncDelegator(o) {\n  var i, p;\n  return i = {}, verb(\"next\"), verb(\"throw\", function (e) {\n    throw e;\n  }), verb(\"return\"), i[Symbol.iterator] = function () {\n    return this;\n  }, i;\n\n  function verb(n, f) {\n    i[n] = o[n] ? function (v) {\n      return (p = !p) ? {\n        value: __await(o[n](v)),\n        done: n === \"return\"\n      } : f ? f(v) : v;\n    } : f;\n  }\n}\nexport function __asyncValues(o) {\n  if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n  var m = o[Symbol.asyncIterator],\n      i;\n  return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () {\n    return this;\n  }, i);\n\n  function verb(n) {\n    i[n] = o[n] && function (v) {\n      return new Promise(function (resolve, reject) {\n        v = o[n](v), settle(resolve, reject, v.done, v.value);\n      });\n    };\n  }\n\n  function settle(resolve, reject, d, v) {\n    Promise.resolve(v).then(function (v) {\n      resolve({\n        value: v,\n        done: d\n      });\n    }, reject);\n  }\n}\nexport function __makeTemplateObject(cooked, raw) {\n  if (Object.defineProperty) {\n    Object.defineProperty(cooked, \"raw\", {\n      value: raw\n    });\n  } else {\n    cooked.raw = raw;\n  }\n\n  return cooked;\n}\n;\nexport function __importStar(mod) {\n  if (mod && mod.__esModule) return mod;\n  var result = {};\n  if (mod != null) for (var k in mod) {\n    if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];\n  }\n  result.default = mod;\n  return result;\n}\nexport function __importDefault(mod) {\n  return mod && mod.__esModule ? mod : {\n    default: mod\n  };\n}\nexport function __classPrivateFieldGet(receiver, privateMap) {\n  if (!privateMap.has(receiver)) {\n    throw new TypeError(\"attempted to get private field on non-instance\");\n  }\n\n  return privateMap.get(receiver);\n}\nexport function __classPrivateFieldSet(receiver, privateMap, value) {\n  if (!privateMap.has(receiver)) {\n    throw new TypeError(\"attempted to set private field on non-instance\");\n  }\n\n  privateMap.set(receiver, value);\n  return value;\n}","/** PURE_IMPORTS_START _identity PURE_IMPORTS_END */\nimport { identity } from './identity';\nexport function pipe() {\n  var fns = [];\n\n  for (var _i = 0; _i < arguments.length; _i++) {\n    fns[_i] = arguments[_i];\n  }\n\n  return pipeFromArray(fns);\n}\nexport function pipeFromArray(fns) {\n  if (fns.length === 0) {\n    return identity;\n  }\n\n  if (fns.length === 1) {\n    return fns[0];\n  }\n\n  return function piped(input) {\n    return fns.reduce(function (prev, fn) {\n      return fn(prev);\n    }, input);\n  };\n}","/** PURE_IMPORTS_START _util_canReportError,_util_toSubscriber,_symbol_observable,_util_pipe,_config PURE_IMPORTS_END */\nimport { canReportError } from './util/canReportError';\nimport { toSubscriber } from './util/toSubscriber';\nimport { observable as Symbol_observable } from './symbol/observable';\nimport { pipeFromArray } from './util/pipe';\nimport { config } from './config';\n\nvar Observable = /*@__PURE__*/function () {\n  function Observable(subscribe) {\n    this._isScalar = false;\n\n    if (subscribe) {\n      this._subscribe = subscribe;\n    }\n  }\n\n  Observable.prototype.lift = function (operator) {\n    var observable = new Observable();\n    observable.source = this;\n    observable.operator = operator;\n    return observable;\n  };\n\n  Observable.prototype.subscribe = function (observerOrNext, error, complete) {\n    var operator = this.operator;\n    var sink = toSubscriber(observerOrNext, error, complete);\n\n    if (operator) {\n      sink.add(operator.call(sink, this.source));\n    } else {\n      sink.add(this.source || config.useDeprecatedSynchronousErrorHandling && !sink.syncErrorThrowable ? this._subscribe(sink) : this._trySubscribe(sink));\n    }\n\n    if (config.useDeprecatedSynchronousErrorHandling) {\n      if (sink.syncErrorThrowable) {\n        sink.syncErrorThrowable = false;\n\n        if (sink.syncErrorThrown) {\n          throw sink.syncErrorValue;\n        }\n      }\n    }\n\n    return sink;\n  };\n\n  Observable.prototype._trySubscribe = function (sink) {\n    try {\n      return this._subscribe(sink);\n    } catch (err) {\n      if (config.useDeprecatedSynchronousErrorHandling) {\n        sink.syncErrorThrown = true;\n        sink.syncErrorValue = err;\n      }\n\n      if (canReportError(sink)) {\n        sink.error(err);\n      } else {\n        console.warn(err);\n      }\n    }\n  };\n\n  Observable.prototype.forEach = function (next, promiseCtor) {\n    var _this = this;\n\n    promiseCtor = getPromiseCtor(promiseCtor);\n    return new promiseCtor(function (resolve, reject) {\n      var subscription;\n      subscription = _this.subscribe(function (value) {\n        try {\n          next(value);\n        } catch (err) {\n          reject(err);\n\n          if (subscription) {\n            subscription.unsubscribe();\n          }\n        }\n      }, reject, resolve);\n    });\n  };\n\n  Observable.prototype._subscribe = function (subscriber) {\n    var source = this.source;\n    return source && source.subscribe(subscriber);\n  };\n\n  Observable.prototype[Symbol_observable] = function () {\n    return this;\n  };\n\n  Observable.prototype.pipe = function () {\n    var operations = [];\n\n    for (var _i = 0; _i < arguments.length; _i++) {\n      operations[_i] = arguments[_i];\n    }\n\n    if (operations.length === 0) {\n      return this;\n    }\n\n    return pipeFromArray(operations)(this);\n  };\n\n  Observable.prototype.toPromise = function (promiseCtor) {\n    var _this = this;\n\n    promiseCtor = getPromiseCtor(promiseCtor);\n    return new promiseCtor(function (resolve, reject) {\n      var value;\n\n      _this.subscribe(function (x) {\n        return value = x;\n      }, function (err) {\n        return reject(err);\n      }, function () {\n        return resolve(value);\n      });\n    });\n  };\n\n  Observable.create = function (subscribe) {\n    return new Observable(subscribe);\n  };\n\n  return Observable;\n}();\n\nexport { Observable };\n\nfunction getPromiseCtor(promiseCtor) {\n  if (!promiseCtor) {\n    promiseCtor = config.Promise || Promise;\n  }\n\n  if (!promiseCtor) {\n    throw new Error('no Promise impl found');\n  }\n\n  return promiseCtor;\n}","/** PURE_IMPORTS_START _Subscriber,_symbol_rxSubscriber,_Observer PURE_IMPORTS_END */\nimport { Subscriber } from '../Subscriber';\nimport { rxSubscriber as rxSubscriberSymbol } from '../symbol/rxSubscriber';\nimport { empty as emptyObserver } from '../Observer';\nexport function toSubscriber(nextOrObserver, error, complete) {\n  if (nextOrObserver) {\n    if (nextOrObserver instanceof Subscriber) {\n      return nextOrObserver;\n    }\n\n    if (nextOrObserver[rxSubscriberSymbol]) {\n      return nextOrObserver[rxSubscriberSymbol]();\n    }\n  }\n\n  if (!nextOrObserver && !error && !complete) {\n    return new Subscriber(emptyObserver);\n  }\n\n  return new Subscriber(nextOrObserver, error, complete);\n}","/** PURE_IMPORTS_START _Subscriber PURE_IMPORTS_END */\nimport { Subscriber } from '../Subscriber';\nexport function canReportError(observer) {\n  while (observer) {\n    var _a = observer,\n        closed_1 = _a.closed,\n        destination = _a.destination,\n        isStopped = _a.isStopped;\n\n    if (closed_1 || isStopped) {\n      return false;\n    } else if (destination && destination instanceof Subscriber) {\n      observer = destination;\n    } else {\n      observer = null;\n    }\n  }\n\n  return true;\n}","var check = function (it) {\n  return it && it.Math == Math && it;\n};\n\n// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028\nmodule.exports =\n  // eslint-disable-next-line es/no-global-this -- safe\n  check(typeof globalThis == 'object' && globalThis) ||\n  check(typeof window == 'object' && window) ||\n  // eslint-disable-next-line no-restricted-globals -- safe\n  check(typeof self == 'object' && self) ||\n  check(typeof global == 'object' && global) ||\n  // eslint-disable-next-line no-new-func -- fallback\n  (function () { return this; })() || Function('return this')();\n","var global = require('../internals/global');\nvar isObject = require('../internals/is-object');\n\nvar String = global.String;\nvar TypeError = global.TypeError;\n\n// `Assert: Type(argument) is Object`\nmodule.exports = function (argument) {\n  if (isObject(argument)) return argument;\n  throw TypeError(String(argument) + ' is not an object');\n};\n","function _typeof(obj) { \"@babel/helpers - typeof\"; return _typeof = \"function\" == typeof Symbol && \"symbol\" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && \"function\" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }, _typeof(obj); }\n\n/** PURE_IMPORTS_START tslib,_util_isFunction,_Observer,_Subscription,_internal_symbol_rxSubscriber,_config,_util_hostReportError PURE_IMPORTS_END */\nimport * as tslib_1 from \"tslib\";\nimport { isFunction } from './util/isFunction';\nimport { empty as emptyObserver } from './Observer';\nimport { Subscription } from './Subscription';\nimport { rxSubscriber as rxSubscriberSymbol } from '../internal/symbol/rxSubscriber';\nimport { config } from './config';\nimport { hostReportError } from './util/hostReportError';\n\nvar Subscriber = /*@__PURE__*/function (_super) {\n  tslib_1.__extends(Subscriber, _super);\n\n  function Subscriber(destinationOrNext, error, complete) {\n    var _this = _super.call(this) || this;\n\n    _this.syncErrorValue = null;\n    _this.syncErrorThrown = false;\n    _this.syncErrorThrowable = false;\n    _this.isStopped = false;\n\n    switch (arguments.length) {\n      case 0:\n        _this.destination = emptyObserver;\n        break;\n\n      case 1:\n        if (!destinationOrNext) {\n          _this.destination = emptyObserver;\n          break;\n        }\n\n        if (_typeof(destinationOrNext) === 'object') {\n          if (destinationOrNext instanceof Subscriber) {\n            _this.syncErrorThrowable = destinationOrNext.syncErrorThrowable;\n            _this.destination = destinationOrNext;\n            destinationOrNext.add(_this);\n          } else {\n            _this.syncErrorThrowable = true;\n            _this.destination = new SafeSubscriber(_this, destinationOrNext);\n          }\n\n          break;\n        }\n\n      default:\n        _this.syncErrorThrowable = true;\n        _this.destination = new SafeSubscriber(_this, destinationOrNext, error, complete);\n        break;\n    }\n\n    return _this;\n  }\n\n  Subscriber.prototype[rxSubscriberSymbol] = function () {\n    return this;\n  };\n\n  Subscriber.create = function (next, error, complete) {\n    var subscriber = new Subscriber(next, error, complete);\n    subscriber.syncErrorThrowable = false;\n    return subscriber;\n  };\n\n  Subscriber.prototype.next = function (value) {\n    if (!this.isStopped) {\n      this._next(value);\n    }\n  };\n\n  Subscriber.prototype.error = function (err) {\n    if (!this.isStopped) {\n      this.isStopped = true;\n\n      this._error(err);\n    }\n  };\n\n  Subscriber.prototype.complete = function () {\n    if (!this.isStopped) {\n      this.isStopped = true;\n\n      this._complete();\n    }\n  };\n\n  Subscriber.prototype.unsubscribe = function () {\n    if (this.closed) {\n      return;\n    }\n\n    this.isStopped = true;\n\n    _super.prototype.unsubscribe.call(this);\n  };\n\n  Subscriber.prototype._next = function (value) {\n    this.destination.next(value);\n  };\n\n  Subscriber.prototype._error = function (err) {\n    this.destination.error(err);\n    this.unsubscribe();\n  };\n\n  Subscriber.prototype._complete = function () {\n    this.destination.complete();\n    this.unsubscribe();\n  };\n\n  Subscriber.prototype._unsubscribeAndRecycle = function () {\n    var _parentOrParents = this._parentOrParents;\n    this._parentOrParents = null;\n    this.unsubscribe();\n    this.closed = false;\n    this.isStopped = false;\n    this._parentOrParents = _parentOrParents;\n    return this;\n  };\n\n  return Subscriber;\n}(Subscription);\n\nexport { Subscriber };\n\nvar SafeSubscriber = /*@__PURE__*/function (_super) {\n  tslib_1.__extends(SafeSubscriber, _super);\n\n  function SafeSubscriber(_parentSubscriber, observerOrNext, error, complete) {\n    var _this = _super.call(this) || this;\n\n    _this._parentSubscriber = _parentSubscriber;\n    var next;\n    var context = _this;\n\n    if (isFunction(observerOrNext)) {\n      next = observerOrNext;\n    } else if (observerOrNext) {\n      next = observerOrNext.next;\n      error = observerOrNext.error;\n      complete = observerOrNext.complete;\n\n      if (observerOrNext !== emptyObserver) {\n        context = Object.create(observerOrNext);\n\n        if (isFunction(context.unsubscribe)) {\n          _this.add(context.unsubscribe.bind(context));\n        }\n\n        context.unsubscribe = _this.unsubscribe.bind(_this);\n      }\n    }\n\n    _this._context = context;\n    _this._next = next;\n    _this._error = error;\n    _this._complete = complete;\n    return _this;\n  }\n\n  SafeSubscriber.prototype.next = function (value) {\n    if (!this.isStopped && this._next) {\n      var _parentSubscriber = this._parentSubscriber;\n\n      if (!config.useDeprecatedSynchronousErrorHandling || !_parentSubscriber.syncErrorThrowable) {\n        this.__tryOrUnsub(this._next, value);\n      } else if (this.__tryOrSetError(_parentSubscriber, this._next, value)) {\n        this.unsubscribe();\n      }\n    }\n  };\n\n  SafeSubscriber.prototype.error = function (err) {\n    if (!this.isStopped) {\n      var _parentSubscriber = this._parentSubscriber;\n      var useDeprecatedSynchronousErrorHandling = config.useDeprecatedSynchronousErrorHandling;\n\n      if (this._error) {\n        if (!useDeprecatedSynchronousErrorHandling || !_parentSubscriber.syncErrorThrowable) {\n          this.__tryOrUnsub(this._error, err);\n\n          this.unsubscribe();\n        } else {\n          this.__tryOrSetError(_parentSubscriber, this._error, err);\n\n          this.unsubscribe();\n        }\n      } else if (!_parentSubscriber.syncErrorThrowable) {\n        this.unsubscribe();\n\n        if (useDeprecatedSynchronousErrorHandling) {\n          throw err;\n        }\n\n        hostReportError(err);\n      } else {\n        if (useDeprecatedSynchronousErrorHandling) {\n          _parentSubscriber.syncErrorValue = err;\n          _parentSubscriber.syncErrorThrown = true;\n        } else {\n          hostReportError(err);\n        }\n\n        this.unsubscribe();\n      }\n    }\n  };\n\n  SafeSubscriber.prototype.complete = function () {\n    var _this = this;\n\n    if (!this.isStopped) {\n      var _parentSubscriber = this._parentSubscriber;\n\n      if (this._complete) {\n        var wrappedComplete = function wrappedComplete() {\n          return _this._complete.call(_this._context);\n        };\n\n        if (!config.useDeprecatedSynchronousErrorHandling || !_parentSubscriber.syncErrorThrowable) {\n          this.__tryOrUnsub(wrappedComplete);\n\n          this.unsubscribe();\n        } else {\n          this.__tryOrSetError(_parentSubscriber, wrappedComplete);\n\n          this.unsubscribe();\n        }\n      } else {\n        this.unsubscribe();\n      }\n    }\n  };\n\n  SafeSubscriber.prototype.__tryOrUnsub = function (fn, value) {\n    try {\n      fn.call(this._context, value);\n    } catch (err) {\n      this.unsubscribe();\n\n      if (config.useDeprecatedSynchronousErrorHandling) {\n        throw err;\n      } else {\n        hostReportError(err);\n      }\n    }\n  };\n\n  SafeSubscriber.prototype.__tryOrSetError = function (parent, fn, value) {\n    if (!config.useDeprecatedSynchronousErrorHandling) {\n      throw new Error('bad call');\n    }\n\n    try {\n      fn.call(this._context, value);\n    } catch (err) {\n      if (config.useDeprecatedSynchronousErrorHandling) {\n        parent.syncErrorValue = err;\n        parent.syncErrorThrown = true;\n        return true;\n      } else {\n        hostReportError(err);\n        return true;\n      }\n    }\n\n    return false;\n  };\n\n  SafeSubscriber.prototype._unsubscribe = function () {\n    var _parentSubscriber = this._parentSubscriber;\n    this._context = null;\n    this._parentSubscriber = null;\n\n    _parentSubscriber.unsubscribe();\n  };\n\n  return SafeSubscriber;\n}(Subscriber);\n\nexport { SafeSubscriber };","var global = require('../internals/global');\nvar getOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar redefine = require('../internals/redefine');\nvar setGlobal = require('../internals/set-global');\nvar copyConstructorProperties = require('../internals/copy-constructor-properties');\nvar isForced = require('../internals/is-forced');\n\n/*\n  options.target      - name of the target object\n  options.global      - target is the global object\n  options.stat        - export as static methods of target\n  options.proto       - export as prototype methods of target\n  options.real        - real prototype method for the `pure` version\n  options.forced      - export even if the native feature is available\n  options.bind        - bind methods to the target, required for the `pure` version\n  options.wrap        - wrap constructors to preventing global pollution, required for the `pure` version\n  options.unsafe      - use the simple assignment of property instead of delete + defineProperty\n  options.sham        - add a flag to not completely full polyfills\n  options.enumerable  - export as enumerable property\n  options.noTargetGet - prevent calling a getter on target\n  options.name        - the .name of the function if it does not match the key\n*/\nmodule.exports = function (options, source) {\n  var TARGET = options.target;\n  var GLOBAL = options.global;\n  var STATIC = options.stat;\n  var FORCED, target, key, targetProperty, sourceProperty, descriptor;\n  if (GLOBAL) {\n    target = global;\n  } else if (STATIC) {\n    target = global[TARGET] || setGlobal(TARGET, {});\n  } else {\n    target = (global[TARGET] || {}).prototype;\n  }\n  if (target) for (key in source) {\n    sourceProperty = source[key];\n    if (options.noTargetGet) {\n      descriptor = getOwnPropertyDescriptor(target, key);\n      targetProperty = descriptor && descriptor.value;\n    } else targetProperty = target[key];\n    FORCED = isForced(GLOBAL ? key : TARGET + (STATIC ? '.' : '#') + key, options.forced);\n    // contained in target\n    if (!FORCED && targetProperty !== undefined) {\n      if (typeof sourceProperty == typeof targetProperty) continue;\n      copyConstructorProperties(sourceProperty, targetProperty);\n    }\n    // add a flag to not completely full polyfills\n    if (options.sham || (targetProperty && targetProperty.sham)) {\n      createNonEnumerableProperty(sourceProperty, 'sham', true);\n    }\n    // extend global\n    redefine(target, key, sourceProperty, options);\n  }\n};\n","var NATIVE_BIND = require('../internals/function-bind-native');\n\nvar FunctionPrototype = Function.prototype;\nvar bind = FunctionPrototype.bind;\nvar call = FunctionPrototype.call;\nvar uncurryThis = NATIVE_BIND && bind.bind(call, call);\n\nmodule.exports = NATIVE_BIND ? function (fn) {\n  return fn && uncurryThis(fn);\n} : function (fn) {\n  return fn && function () {\n    return call.apply(fn, arguments);\n  };\n};\n","/** PURE_IMPORTS_START  PURE_IMPORTS_END */\nvar UnsubscriptionErrorImpl = /*@__PURE__*/function () {\n  function UnsubscriptionErrorImpl(errors) {\n    Error.call(this);\n    this.message = errors ? errors.length + \" errors occurred during unsubscription:\\n\" + errors.map(function (err, i) {\n      return i + 1 + \") \" + err.toString();\n    }).join('\\n  ') : '';\n    this.name = 'UnsubscriptionError';\n    this.errors = errors;\n    return this;\n  }\n\n  UnsubscriptionErrorImpl.prototype = /*@__PURE__*/Object.create(Error.prototype);\n  return UnsubscriptionErrorImpl;\n}();\n\nexport var UnsubscriptionError = UnsubscriptionErrorImpl;","function _typeof(obj) { \"@babel/helpers - typeof\"; return _typeof = \"function\" == typeof Symbol && \"symbol\" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && \"function\" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }, _typeof(obj); }\n\n/** PURE_IMPORTS_START _util_isArray,_util_isObject,_util_isFunction,_util_UnsubscriptionError PURE_IMPORTS_END */\nimport { isArray } from './util/isArray';\nimport { isObject } from './util/isObject';\nimport { isFunction } from './util/isFunction';\nimport { UnsubscriptionError } from './util/UnsubscriptionError';\n\nvar Subscription = /*@__PURE__*/function () {\n  function Subscription(unsubscribe) {\n    this.closed = false;\n    this._parentOrParents = null;\n    this._subscriptions = null;\n\n    if (unsubscribe) {\n      this._ctorUnsubscribe = true;\n      this._unsubscribe = unsubscribe;\n    }\n  }\n\n  Subscription.prototype.unsubscribe = function () {\n    var errors;\n\n    if (this.closed) {\n      return;\n    }\n\n    var _a = this,\n        _parentOrParents = _a._parentOrParents,\n        _ctorUnsubscribe = _a._ctorUnsubscribe,\n        _unsubscribe = _a._unsubscribe,\n        _subscriptions = _a._subscriptions;\n\n    this.closed = true;\n    this._parentOrParents = null;\n    this._subscriptions = null;\n\n    if (_parentOrParents instanceof Subscription) {\n      _parentOrParents.remove(this);\n    } else if (_parentOrParents !== null) {\n      for (var index = 0; index < _parentOrParents.length; ++index) {\n        var parent_1 = _parentOrParents[index];\n        parent_1.remove(this);\n      }\n    }\n\n    if (isFunction(_unsubscribe)) {\n      if (_ctorUnsubscribe) {\n        this._unsubscribe = undefined;\n      }\n\n      try {\n        _unsubscribe.call(this);\n      } catch (e) {\n        errors = e instanceof UnsubscriptionError ? flattenUnsubscriptionErrors(e.errors) : [e];\n      }\n    }\n\n    if (isArray(_subscriptions)) {\n      var index = -1;\n      var len = _subscriptions.length;\n\n      while (++index < len) {\n        var sub = _subscriptions[index];\n\n        if (isObject(sub)) {\n          try {\n            sub.unsubscribe();\n          } catch (e) {\n            errors = errors || [];\n\n            if (e instanceof UnsubscriptionError) {\n              errors = errors.concat(flattenUnsubscriptionErrors(e.errors));\n            } else {\n              errors.push(e);\n            }\n          }\n        }\n      }\n    }\n\n    if (errors) {\n      throw new UnsubscriptionError(errors);\n    }\n  };\n\n  Subscription.prototype.add = function (teardown) {\n    var subscription = teardown;\n\n    if (!teardown) {\n      return Subscription.EMPTY;\n    }\n\n    switch (_typeof(teardown)) {\n      case 'function':\n        subscription = new Subscription(teardown);\n\n      case 'object':\n        if (subscription === this || subscription.closed || typeof subscription.unsubscribe !== 'function') {\n          return subscription;\n        } else if (this.closed) {\n          subscription.unsubscribe();\n          return subscription;\n        } else if (!(subscription instanceof Subscription)) {\n          var tmp = subscription;\n          subscription = new Subscription();\n          subscription._subscriptions = [tmp];\n        }\n\n        break;\n\n      default:\n        {\n          throw new Error('unrecognized teardown ' + teardown + ' added to Subscription.');\n        }\n    }\n\n    var _parentOrParents = subscription._parentOrParents;\n\n    if (_parentOrParents === null) {\n      subscription._parentOrParents = this;\n    } else if (_parentOrParents instanceof Subscription) {\n      if (_parentOrParents === this) {\n        return subscription;\n      }\n\n      subscription._parentOrParents = [_parentOrParents, this];\n    } else if (_parentOrParents.indexOf(this) === -1) {\n      _parentOrParents.push(this);\n    } else {\n      return subscription;\n    }\n\n    var subscriptions = this._subscriptions;\n\n    if (subscriptions === null) {\n      this._subscriptions = [subscription];\n    } else {\n      subscriptions.push(subscription);\n    }\n\n    return subscription;\n  };\n\n  Subscription.prototype.remove = function (subscription) {\n    var subscriptions = this._subscriptions;\n\n    if (subscriptions) {\n      var subscriptionIndex = subscriptions.indexOf(subscription);\n\n      if (subscriptionIndex !== -1) {\n        subscriptions.splice(subscriptionIndex, 1);\n      }\n    }\n  };\n\n  Subscription.EMPTY = function (empty) {\n    empty.closed = true;\n    return empty;\n  }(new Subscription());\n\n  return Subscription;\n}();\n\nexport { Subscription };\n\nfunction flattenUnsubscriptionErrors(errors) {\n  return errors.reduce(function (errs, err) {\n    return errs.concat(err instanceof UnsubscriptionError ? err.errors : err);\n  }, []);\n}","module.exports = function (exec) {\n  try {\n    return !!exec();\n  } catch (error) {\n    return true;\n  }\n};\n","// `IsCallable` abstract operation\n// https://tc39.es/ecma262/#sec-iscallable\nmodule.exports = function (argument) {\n  return typeof argument == 'function';\n};\n","var isCallable = require('../internals/is-callable');\n\nmodule.exports = function (it) {\n  return typeof it == 'object' ? it !== null : isCallable(it);\n};\n","/** PURE_IMPORTS_START  PURE_IMPORTS_END */\nvar _enable_super_gross_mode_that_will_cause_bad_things = false;\nexport var config = {\n  Promise: undefined,\n\n  set useDeprecatedSynchronousErrorHandling(value) {\n    if (value) {\n      var error = /*@__PURE__*/new Error();\n      /*@__PURE__*/\n\n      console.warn('DEPRECATED! RxJS was set to use deprecated synchronous error handling behavior by code at: \\n' + error.stack);\n    } else if (_enable_super_gross_mode_that_will_cause_bad_things) {\n      /*@__PURE__*/\n      console.log('RxJS: Back to a better error behavior. Thank you. <3');\n    }\n\n    _enable_super_gross_mode_that_will_cause_bad_things = value;\n  },\n\n  get useDeprecatedSynchronousErrorHandling() {\n    return _enable_super_gross_mode_that_will_cause_bad_things;\n  }\n\n};","var uncurryThis = require('../internals/function-uncurry-this');\nvar toObject = require('../internals/to-object');\n\nvar hasOwnProperty = uncurryThis({}.hasOwnProperty);\n\n// `HasOwnProperty` abstract operation\n// https://tc39.es/ecma262/#sec-hasownproperty\nmodule.exports = Object.hasOwn || function hasOwn(it, key) {\n  return hasOwnProperty(toObject(it), key);\n};\n","var global = require('../internals/global');\nvar shared = require('../internals/shared');\nvar hasOwn = require('../internals/has-own-property');\nvar uid = require('../internals/uid');\nvar NATIVE_SYMBOL = require('../internals/native-symbol');\nvar USE_SYMBOL_AS_UID = require('../internals/use-symbol-as-uid');\n\nvar WellKnownSymbolsStore = shared('wks');\nvar Symbol = global.Symbol;\nvar symbolFor = Symbol && Symbol['for'];\nvar createWellKnownSymbol = USE_SYMBOL_AS_UID ? Symbol : Symbol && Symbol.withoutSetter || uid;\n\nmodule.exports = function (name) {\n  if (!hasOwn(WellKnownSymbolsStore, name) || !(NATIVE_SYMBOL || typeof WellKnownSymbolsStore[name] == 'string')) {\n    var description = 'Symbol.' + name;\n    if (NATIVE_SYMBOL && hasOwn(Symbol, name)) {\n      WellKnownSymbolsStore[name] = Symbol[name];\n    } else if (USE_SYMBOL_AS_UID && symbolFor) {\n      WellKnownSymbolsStore[name] = symbolFor(description);\n    } else {\n      WellKnownSymbolsStore[name] = createWellKnownSymbol(description);\n    }\n  } return WellKnownSymbolsStore[name];\n};\n","var fails = require('../internals/fails');\n\n// Detect IE8's incomplete defineProperty implementation\nmodule.exports = !fails(function () {\n  // eslint-disable-next-line es/no-object-defineproperty -- required for testing\n  return Object.defineProperty({}, 1, { get: function () { return 7; } })[1] != 7;\n});\n","var global = require('../internals/global');\nvar isCallable = require('../internals/is-callable');\n\nvar aFunction = function (argument) {\n  return isCallable(argument) ? argument : undefined;\n};\n\nmodule.exports = function (namespace, method) {\n  return arguments.length < 2 ? aFunction(global[namespace]) : global[namespace] && global[namespace][method];\n};\n","var global = require('../internals/global');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar IE8_DOM_DEFINE = require('../internals/ie8-dom-define');\nvar V8_PROTOTYPE_DEFINE_BUG = require('../internals/v8-prototype-define-bug');\nvar anObject = require('../internals/an-object');\nvar toPropertyKey = require('../internals/to-property-key');\n\nvar TypeError = global.TypeError;\n// eslint-disable-next-line es/no-object-defineproperty -- safe\nvar $defineProperty = Object.defineProperty;\n// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\nvar $getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\nvar ENUMERABLE = 'enumerable';\nvar CONFIGURABLE = 'configurable';\nvar WRITABLE = 'writable';\n\n// `Object.defineProperty` method\n// https://tc39.es/ecma262/#sec-object.defineproperty\nexports.f = DESCRIPTORS ? V8_PROTOTYPE_DEFINE_BUG ? function defineProperty(O, P, Attributes) {\n  anObject(O);\n  P = toPropertyKey(P);\n  anObject(Attributes);\n  if (typeof O === 'function' && P === 'prototype' && 'value' in Attributes && WRITABLE in Attributes && !Attributes[WRITABLE]) {\n    var current = $getOwnPropertyDescriptor(O, P);\n    if (current && current[WRITABLE]) {\n      O[P] = Attributes.value;\n      Attributes = {\n        configurable: CONFIGURABLE in Attributes ? Attributes[CONFIGURABLE] : current[CONFIGURABLE],\n        enumerable: ENUMERABLE in Attributes ? Attributes[ENUMERABLE] : current[ENUMERABLE],\n        writable: false\n      };\n    }\n  } return $defineProperty(O, P, Attributes);\n} : $defineProperty : function defineProperty(O, P, Attributes) {\n  anObject(O);\n  P = toPropertyKey(P);\n  anObject(Attributes);\n  if (IE8_DOM_DEFINE) try {\n    return $defineProperty(O, P, Attributes);\n  } catch (error) { /* empty */ }\n  if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported');\n  if ('value' in Attributes) O[P] = Attributes.value;\n  return O;\n};\n","/** PURE_IMPORTS_START  PURE_IMPORTS_END */\nexport var observable = /*@__PURE__*/function () {\n  return typeof Symbol === 'function' && Symbol.observable || '@@observable';\n}();","var NATIVE_BIND = require('../internals/function-bind-native');\n\nvar call = Function.prototype.call;\n\nmodule.exports = NATIVE_BIND ? call.bind(call) : function () {\n  return call.apply(call, arguments);\n};\n","// TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`\nrequire('../modules/es.map');\nrequire('../modules/es.weak-map');\nvar getBuiltIn = require('../internals/get-built-in');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar shared = require('../internals/shared');\n\nvar Map = getBuiltIn('Map');\nvar WeakMap = getBuiltIn('WeakMap');\nvar push = uncurryThis([].push);\n\nvar metadata = shared('metadata');\nvar store = metadata.store || (metadata.store = new WeakMap());\n\nvar getOrCreateMetadataMap = function (target, targetKey, create) {\n  var targetMetadata = store.get(target);\n  if (!targetMetadata) {\n    if (!create) return;\n    store.set(target, targetMetadata = new Map());\n  }\n  var keyMetadata = targetMetadata.get(targetKey);\n  if (!keyMetadata) {\n    if (!create) return;\n    targetMetadata.set(targetKey, keyMetadata = new Map());\n  } return keyMetadata;\n};\n\nvar ordinaryHasOwnMetadata = function (MetadataKey, O, P) {\n  var metadataMap = getOrCreateMetadataMap(O, P, false);\n  return metadataMap === undefined ? false : metadataMap.has(MetadataKey);\n};\n\nvar ordinaryGetOwnMetadata = function (MetadataKey, O, P) {\n  var metadataMap = getOrCreateMetadataMap(O, P, false);\n  return metadataMap === undefined ? undefined : metadataMap.get(MetadataKey);\n};\n\nvar ordinaryDefineOwnMetadata = function (MetadataKey, MetadataValue, O, P) {\n  getOrCreateMetadataMap(O, P, true).set(MetadataKey, MetadataValue);\n};\n\nvar ordinaryOwnMetadataKeys = function (target, targetKey) {\n  var metadataMap = getOrCreateMetadataMap(target, targetKey, false);\n  var keys = [];\n  if (metadataMap) metadataMap.forEach(function (_, key) { push(keys, key); });\n  return keys;\n};\n\nvar toMetadataKey = function (it) {\n  return it === undefined || typeof it == 'symbol' ? it : String(it);\n};\n\nmodule.exports = {\n  store: store,\n  getMap: getOrCreateMetadataMap,\n  has: ordinaryHasOwnMetadata,\n  get: ordinaryGetOwnMetadata,\n  set: ordinaryDefineOwnMetadata,\n  keys: ordinaryOwnMetadataKeys,\n  toKey: toMetadataKey\n};\n","/** PURE_IMPORTS_START  PURE_IMPORTS_END */\nexport function hostReportError(err) {\n  setTimeout(function () {\n    throw err;\n  }, 0);\n}","var global = require('../internals/global');\nvar hasOwn = require('../internals/has-own-property');\nvar isCallable = require('../internals/is-callable');\nvar toObject = require('../internals/to-object');\nvar sharedKey = require('../internals/shared-key');\nvar CORRECT_PROTOTYPE_GETTER = require('../internals/correct-prototype-getter');\n\nvar IE_PROTO = sharedKey('IE_PROTO');\nvar Object = global.Object;\nvar ObjectPrototype = Object.prototype;\n\n// `Object.getPrototypeOf` method\n// https://tc39.es/ecma262/#sec-object.getprototypeof\nmodule.exports = CORRECT_PROTOTYPE_GETTER ? Object.getPrototypeOf : function (O) {\n  var object = toObject(O);\n  if (hasOwn(object, IE_PROTO)) return object[IE_PROTO];\n  var constructor = object.constructor;\n  if (isCallable(constructor) && object instanceof constructor) {\n    return constructor.prototype;\n  } return object instanceof Object ? ObjectPrototype : null;\n};\n","/** PURE_IMPORTS_START  PURE_IMPORTS_END */\nexport function getSymbolIterator() {\n  if (typeof Symbol !== 'function' || !Symbol.iterator) {\n    return '@@iterator';\n  }\n\n  return Symbol.iterator;\n}\nexport var iterator = /*@__PURE__*/getSymbolIterator();\nexport var $$iterator = iterator;","/** PURE_IMPORTS_START  PURE_IMPORTS_END */\nexport var isArray = /*@__PURE__*/function () {\n  return Array.isArray || function (x) {\n    return x && typeof x.length === 'number';\n  };\n}();","/** PURE_IMPORTS_START  PURE_IMPORTS_END */\nvar ObjectUnsubscribedErrorImpl = /*@__PURE__*/function () {\n  function ObjectUnsubscribedErrorImpl() {\n    Error.call(this);\n    this.message = 'object unsubscribed';\n    this.name = 'ObjectUnsubscribedError';\n    return this;\n  }\n\n  ObjectUnsubscribedErrorImpl.prototype = /*@__PURE__*/Object.create(Error.prototype);\n  return ObjectUnsubscribedErrorImpl;\n}();\n\nexport var ObjectUnsubscribedError = ObjectUnsubscribedErrorImpl;","/** PURE_IMPORTS_START  PURE_IMPORTS_END */\nexport var rxSubscriber = /*@__PURE__*/function () {\n  return typeof Symbol === 'function' ? /*@__PURE__*/Symbol('rxSubscriber') : '@@rxSubscriber_' + /*@__PURE__*/Math.random();\n}();\nexport var $$rxSubscriber = rxSubscriber;","function _typeof(obj) { \"@babel/helpers - typeof\"; return _typeof = \"function\" == typeof Symbol && \"symbol\" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && \"function\" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }, _typeof(obj); }\n\nfunction _get() { if (typeof Reflect !== \"undefined\" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(arguments.length < 3 ? target : receiver); } return desc.value; }; } return _get.apply(this, arguments); }\n\nfunction _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, \"prototype\", { writable: false }); return Constructor; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function\"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); Object.defineProperty(subClass, \"prototype\", { writable: false }); if (superClass) _setPrototypeOf(subClass, superClass); }\n\nfunction _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }\n\nfunction _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }\n\nfunction _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === \"object\" || typeof call === \"function\")) { return call; } else if (call !== void 0) { throw new TypeError(\"Derived constructors may only return object or undefined\"); } return _assertThisInitialized(self); }\n\nfunction _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return self; }\n\nfunction _isNativeReflectConstruct() { if (typeof Reflect === \"undefined\" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === \"function\") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }\n\nfunction _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }\n\n/**\n * @license Angular v11.0.2\n * (c) 2010-2020 Google LLC. https://angular.io/\n * License: MIT\n */\nimport { ɵDomAdapter, ɵsetRootDomAdapter, ɵparseCookieValue, ɵgetDOM, DOCUMENT, ɵPLATFORM_BROWSER_ID, CommonModule } from '@angular/common';\nexport { ɵgetDOM } from '@angular/common';\nimport { ɵglobal, InjectionToken, ApplicationInitStatus, APP_INITIALIZER, Injector, setTestabilityGetter, ApplicationRef, NgZone, ɵgetDebugNodeR2, NgProbeToken, Optional, Injectable, Inject, ViewEncapsulation, APP_ID, RendererStyleFlags2, ɵConsole, NgModule, ɵɵdefineInjectable, ɵɵinject, forwardRef, SecurityContext, ɵallowSanitizationBypassAndThrow, ɵunwrapSafeValue, ɵgetSanitizationBypassType, ɵ_sanitizeUrl, ɵ_sanitizeHtml, ɵbypassSanitizationTrustHtml, ɵbypassSanitizationTrustStyle, ɵbypassSanitizationTrustScript, ɵbypassSanitizationTrustUrl, ɵbypassSanitizationTrustResourceUrl, INJECTOR, ErrorHandler, ɵsetDocument, PLATFORM_ID, PLATFORM_INITIALIZER, Sanitizer, createPlatformFactory, platformCore, ɵINJECTOR_SCOPE, RendererFactory2, Testability, ApplicationModule, SkipSelf, Version } from '@angular/core';\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Provides DOM operations in any browser environment.\n *\n * @security Tread carefully! Interacting with the DOM directly is dangerous and\n * can introduce XSS risks.\n */\n\nvar GenericBrowserDomAdapter = /*#__PURE__*/function (_ɵDomAdapter) {\n  _inherits(GenericBrowserDomAdapter, _ɵDomAdapter);\n\n  var _super = _createSuper(GenericBrowserDomAdapter);\n\n  function GenericBrowserDomAdapter() {\n    _classCallCheck(this, GenericBrowserDomAdapter);\n\n    return _super.call(this);\n  }\n\n  _createClass(GenericBrowserDomAdapter, [{\n    key: \"supportsDOMEvents\",\n    value: function supportsDOMEvents() {\n      return true;\n    }\n  }]);\n\n  return GenericBrowserDomAdapter;\n}(ɵDomAdapter);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ɵ0 = function ɵ0() {\n  if (ɵglobal['Node']) {\n    return ɵglobal['Node'].prototype.contains || function (node) {\n      return !!(this.compareDocumentPosition(node) & 16);\n    };\n  }\n\n  return undefined;\n};\n\nvar nodeContains = ɵ0();\n/**\n * A `DomAdapter` powered by full browser DOM APIs.\n *\n * @security Tread carefully! Interacting with the DOM directly is dangerous and\n * can introduce XSS risks.\n */\n\n/* tslint:disable:requireParameterType no-console */\n\nvar BrowserDomAdapter = /*#__PURE__*/function (_GenericBrowserDomAda) {\n  _inherits(BrowserDomAdapter, _GenericBrowserDomAda);\n\n  var _super2 = _createSuper(BrowserDomAdapter);\n\n  function BrowserDomAdapter() {\n    _classCallCheck(this, BrowserDomAdapter);\n\n    return _super2.apply(this, arguments);\n  }\n\n  _createClass(BrowserDomAdapter, [{\n    key: \"getProperty\",\n    value: function getProperty(el, name) {\n      return el[name];\n    }\n  }, {\n    key: \"log\",\n    value: function log(error) {\n      if (window.console) {\n        window.console.log && window.console.log(error);\n      }\n    }\n  }, {\n    key: \"logGroup\",\n    value: function logGroup(error) {\n      if (window.console) {\n        window.console.group && window.console.group(error);\n      }\n    }\n  }, {\n    key: \"logGroupEnd\",\n    value: function logGroupEnd() {\n      if (window.console) {\n        window.console.groupEnd && window.console.groupEnd();\n      }\n    }\n  }, {\n    key: \"onAndCancel\",\n    value: function onAndCancel(el, evt, listener) {\n      el.addEventListener(evt, listener, false); // Needed to follow Dart's subscription semantic, until fix of\n      // https://code.google.com/p/dart/issues/detail?id=17406\n\n      return function () {\n        el.removeEventListener(evt, listener, false);\n      };\n    }\n  }, {\n    key: \"dispatchEvent\",\n    value: function dispatchEvent(el, evt) {\n      el.dispatchEvent(evt);\n    }\n  }, {\n    key: \"remove\",\n    value: function remove(node) {\n      if (node.parentNode) {\n        node.parentNode.removeChild(node);\n      }\n\n      return node;\n    }\n  }, {\n    key: \"getValue\",\n    value: function getValue(el) {\n      return el.value;\n    }\n  }, {\n    key: \"createElement\",\n    value: function createElement(tagName, doc) {\n      doc = doc || this.getDefaultDocument();\n      return doc.createElement(tagName);\n    }\n  }, {\n    key: \"createHtmlDocument\",\n    value: function createHtmlDocument() {\n      return document.implementation.createHTMLDocument('fakeTitle');\n    }\n  }, {\n    key: \"getDefaultDocument\",\n    value: function getDefaultDocument() {\n      return document;\n    }\n  }, {\n    key: \"isElementNode\",\n    value: function isElementNode(node) {\n      return node.nodeType === Node.ELEMENT_NODE;\n    }\n  }, {\n    key: \"isShadowRoot\",\n    value: function isShadowRoot(node) {\n      return node instanceof DocumentFragment;\n    }\n  }, {\n    key: \"getGlobalEventTarget\",\n    value: function getGlobalEventTarget(doc, target) {\n      if (target === 'window') {\n        return window;\n      }\n\n      if (target === 'document') {\n        return doc;\n      }\n\n      if (target === 'body') {\n        return doc.body;\n      }\n\n      return null;\n    }\n  }, {\n    key: \"getHistory\",\n    value: function getHistory() {\n      return window.history;\n    }\n  }, {\n    key: \"getLocation\",\n    value: function getLocation() {\n      return window.location;\n    }\n  }, {\n    key: \"getBaseHref\",\n    value: function getBaseHref(doc) {\n      var href = getBaseElementHref();\n      return href == null ? null : relativePath(href);\n    }\n  }, {\n    key: \"resetBaseElement\",\n    value: function resetBaseElement() {\n      baseElement = null;\n    }\n  }, {\n    key: \"getUserAgent\",\n    value: function getUserAgent() {\n      return window.navigator.userAgent;\n    }\n  }, {\n    key: \"performanceNow\",\n    value: function performanceNow() {\n      // performance.now() is not available in all browsers, see\n      // http://caniuse.com/#search=performance.now\n      return window.performance && window.performance.now ? window.performance.now() : new Date().getTime();\n    }\n  }, {\n    key: \"supportsCookies\",\n    value: function supportsCookies() {\n      return true;\n    }\n  }, {\n    key: \"getCookie\",\n    value: function getCookie(name) {\n      return ɵparseCookieValue(document.cookie, name);\n    }\n  }], [{\n    key: \"makeCurrent\",\n    value: function makeCurrent() {\n      ɵsetRootDomAdapter(new BrowserDomAdapter());\n    }\n  }]);\n\n  return BrowserDomAdapter;\n}(GenericBrowserDomAdapter);\n\nvar baseElement = null;\n\nfunction getBaseElementHref() {\n  if (!baseElement) {\n    baseElement = document.querySelector('base');\n\n    if (!baseElement) {\n      return null;\n    }\n  }\n\n  return baseElement.getAttribute('href');\n} // based on urlUtils.js in AngularJS 1\n\n\nvar urlParsingNode;\n\nfunction relativePath(url) {\n  if (!urlParsingNode) {\n    urlParsingNode = document.createElement('a');\n  }\n\n  urlParsingNode.setAttribute('href', url);\n  return urlParsingNode.pathname.charAt(0) === '/' ? urlParsingNode.pathname : '/' + urlParsingNode.pathname;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * An id that identifies a particular application being bootstrapped, that should\n * match across the client/server boundary.\n */\n\n\nvar TRANSITION_ID = new InjectionToken('TRANSITION_ID');\n\nfunction appInitializerFactory(transitionId, document, injector) {\n  return function () {\n    // Wait for all application initializers to be completed before removing the styles set by\n    // the server.\n    injector.get(ApplicationInitStatus).donePromise.then(function () {\n      var dom = ɵgetDOM();\n      var styles = Array.prototype.slice.apply(document.querySelectorAll(\"style[ng-transition]\"));\n      styles.filter(function (el) {\n        return el.getAttribute('ng-transition') === transitionId;\n      }).forEach(function (el) {\n        return dom.remove(el);\n      });\n    });\n  };\n}\n\nvar SERVER_TRANSITION_PROVIDERS = [{\n  provide: APP_INITIALIZER,\n  useFactory: appInitializerFactory,\n  deps: [TRANSITION_ID, DOCUMENT, Injector],\n  multi: true\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar BrowserGetTestability = /*#__PURE__*/function () {\n  function BrowserGetTestability() {\n    _classCallCheck(this, BrowserGetTestability);\n  }\n\n  _createClass(BrowserGetTestability, [{\n    key: \"addToWindow\",\n    value: function addToWindow(registry) {\n      ɵglobal['getAngularTestability'] = function (elem) {\n        var findInAncestors = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;\n        var testability = registry.findTestabilityInTree(elem, findInAncestors);\n\n        if (testability == null) {\n          throw new Error('Could not find testability for element.');\n        }\n\n        return testability;\n      };\n\n      ɵglobal['getAllAngularTestabilities'] = function () {\n        return registry.getAllTestabilities();\n      };\n\n      ɵglobal['getAllAngularRootElements'] = function () {\n        return registry.getAllRootElements();\n      };\n\n      var whenAllStable = function whenAllStable(callback\n      /** TODO #9100 */\n      ) {\n        var testabilities = ɵglobal['getAllAngularTestabilities']();\n        var count = testabilities.length;\n        var didWork = false;\n\n        var decrement = function decrement(didWork_\n        /** TODO #9100 */\n        ) {\n          didWork = didWork || didWork_;\n          count--;\n\n          if (count == 0) {\n            callback(didWork);\n          }\n        };\n\n        testabilities.forEach(function (testability\n        /** TODO #9100 */\n        ) {\n          testability.whenStable(decrement);\n        });\n      };\n\n      if (!ɵglobal['frameworkStabilizers']) {\n        ɵglobal['frameworkStabilizers'] = [];\n      }\n\n      ɵglobal['frameworkStabilizers'].push(whenAllStable);\n    }\n  }, {\n    key: \"findTestabilityInTree\",\n    value: function findTestabilityInTree(registry, elem, findInAncestors) {\n      if (elem == null) {\n        return null;\n      }\n\n      var t = registry.getTestability(elem);\n\n      if (t != null) {\n        return t;\n      } else if (!findInAncestors) {\n        return null;\n      }\n\n      if (ɵgetDOM().isShadowRoot(elem)) {\n        return this.findTestabilityInTree(registry, elem.host, true);\n      }\n\n      return this.findTestabilityInTree(registry, elem.parentElement, true);\n    }\n  }], [{\n    key: \"init\",\n    value: function init() {\n      setTestabilityGetter(new BrowserGetTestability());\n    }\n  }]);\n\n  return BrowserGetTestability;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar CAMEL_CASE_REGEXP = /([A-Z])/g;\nvar DASH_CASE_REGEXP = /-([a-z])/g;\n\nfunction camelCaseToDashCase(input) {\n  return input.replace(CAMEL_CASE_REGEXP, function () {\n    for (var _len = arguments.length, m = new Array(_len), _key = 0; _key < _len; _key++) {\n      m[_key] = arguments[_key];\n    }\n\n    return '-' + m[1].toLowerCase();\n  });\n}\n\nfunction dashCaseToCamelCase(input) {\n  return input.replace(DASH_CASE_REGEXP, function () {\n    for (var _len2 = arguments.length, m = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n      m[_key2] = arguments[_key2];\n    }\n\n    return m[1].toUpperCase();\n  });\n}\n/**\n * Exports the value under a given `name` in the global property `ng`. For example `ng.probe` if\n * `name` is `'probe'`.\n * @param name Name under which it will be exported. Keep in mind this will be a property of the\n * global `ng` object.\n * @param value The value to export.\n */\n\n\nfunction exportNgVar(name, value) {\n  if (typeof COMPILED === 'undefined' || !COMPILED) {\n    // Note: we can't export `ng` when using closure enhanced optimization as:\n    // - closure declares globals itself for minified names, which sometimes clobber our `ng` global\n    // - we can't declare a closure extern as the namespace `ng` is already used within Google\n    //   for typings for angularJS (via `goog.provide('ng....')`).\n    var ng = ɵglobal['ng'] = ɵglobal['ng'] || {};\n    ng[name] = value;\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ɵ0$1 = function ɵ0$1() {\n  return {\n    'ApplicationRef': ApplicationRef,\n    'NgZone': NgZone\n  };\n};\n\nvar CORE_TOKENS = ɵ0$1();\nvar INSPECT_GLOBAL_NAME = 'probe';\nvar CORE_TOKENS_GLOBAL_NAME = 'coreTokens';\n/**\n * Returns a {@link DebugElement} for the given native DOM element, or\n * null if the given native element does not have an Angular view associated\n * with it.\n */\n\nfunction inspectNativeElementR2(element) {\n  return ɵgetDebugNodeR2(element);\n}\n\nfunction _createNgProbeR2(coreTokens) {\n  exportNgVar(INSPECT_GLOBAL_NAME, inspectNativeElementR2);\n  exportNgVar(CORE_TOKENS_GLOBAL_NAME, Object.assign(Object.assign({}, CORE_TOKENS), _ngProbeTokensToMap(coreTokens || [])));\n  return function () {\n    return inspectNativeElementR2;\n  };\n}\n\nfunction _ngProbeTokensToMap(tokens) {\n  return tokens.reduce(function (prev, t) {\n    return prev[t.name] = t.token, prev;\n  }, {});\n}\n/**\n * In Ivy, we don't support NgProbe because we have our own set of testing utilities\n * with more robust functionality.\n *\n * We shouldn't bring in NgProbe because it prevents DebugNode and friends from\n * tree-shaking properly.\n */\n\n\nvar ELEMENT_PROBE_PROVIDERS__POST_R3__ = [];\n/**\n * Providers which support debugging Angular applications (e.g. via `ng.probe`).\n */\n\nvar ELEMENT_PROBE_PROVIDERS__PRE_R3__ = [{\n  provide: APP_INITIALIZER,\n  useFactory: _createNgProbeR2,\n  deps: [[NgProbeToken, new Optional()]],\n  multi: true\n}];\nvar ELEMENT_PROBE_PROVIDERS = ELEMENT_PROBE_PROVIDERS__PRE_R3__;\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * The injection token for the event-manager plug-in service.\n *\n * @publicApi\n */\n\nvar EVENT_MANAGER_PLUGINS = new InjectionToken('EventManagerPlugins');\n/**\n * An injectable service that provides event management for Angular\n * through a browser plug-in.\n *\n * @publicApi\n */\n\nvar EventManager = /*#__PURE__*/function () {\n  /**\n   * Initializes an instance of the event-manager service.\n   */\n  function EventManager(plugins, _zone) {\n    var _this = this;\n\n    _classCallCheck(this, EventManager);\n\n    this._zone = _zone;\n    this._eventNameToPlugin = new Map();\n    plugins.forEach(function (p) {\n      return p.manager = _this;\n    });\n    this._plugins = plugins.slice().reverse();\n  }\n  /**\n   * Registers a handler for a specific element and event.\n   *\n   * @param element The HTML element to receive event notifications.\n   * @param eventName The name of the event to listen for.\n   * @param handler A function to call when the notification occurs. Receives the\n   * event object as an argument.\n   * @returns  A callback function that can be used to remove the handler.\n   */\n\n\n  _createClass(EventManager, [{\n    key: \"addEventListener\",\n    value: function addEventListener(element, eventName, handler) {\n      var plugin = this._findPluginFor(eventName);\n\n      return plugin.addEventListener(element, eventName, handler);\n    }\n    /**\n     * Registers a global handler for an event in a target view.\n     *\n     * @param target A target for global event notifications. One of \"window\", \"document\", or \"body\".\n     * @param eventName The name of the event to listen for.\n     * @param handler A function to call when the notification occurs. Receives the\n     * event object as an argument.\n     * @returns A callback function that can be used to remove the handler.\n     */\n\n  }, {\n    key: \"addGlobalEventListener\",\n    value: function addGlobalEventListener(target, eventName, handler) {\n      var plugin = this._findPluginFor(eventName);\n\n      return plugin.addGlobalEventListener(target, eventName, handler);\n    }\n    /**\n     * Retrieves the compilation zone in which event listeners are registered.\n     */\n\n  }, {\n    key: \"getZone\",\n    value: function getZone() {\n      return this._zone;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_findPluginFor\",\n    value: function _findPluginFor(eventName) {\n      var plugin = this._eventNameToPlugin.get(eventName);\n\n      if (plugin) {\n        return plugin;\n      }\n\n      var plugins = this._plugins;\n\n      for (var i = 0; i < plugins.length; i++) {\n        var _plugin = plugins[i];\n\n        if (_plugin.supports(eventName)) {\n          this._eventNameToPlugin.set(eventName, _plugin);\n\n          return _plugin;\n        }\n      }\n\n      throw new Error(\"No event manager plugin found for event \".concat(eventName));\n    }\n  }]);\n\n  return EventManager;\n}();\n\nEventManager.decorators = [{\n  type: Injectable\n}];\n\nEventManager.ctorParameters = function () {\n  return [{\n    type: Array,\n    decorators: [{\n      type: Inject,\n      args: [EVENT_MANAGER_PLUGINS]\n    }]\n  }, {\n    type: NgZone\n  }];\n};\n\nvar EventManagerPlugin = /*#__PURE__*/function () {\n  function EventManagerPlugin(_doc) {\n    _classCallCheck(this, EventManagerPlugin);\n\n    this._doc = _doc;\n  }\n\n  _createClass(EventManagerPlugin, [{\n    key: \"addGlobalEventListener\",\n    value: function addGlobalEventListener(element, eventName, handler) {\n      var target = ɵgetDOM().getGlobalEventTarget(this._doc, element);\n\n      if (!target) {\n        throw new Error(\"Unsupported event target \".concat(target, \" for event \").concat(eventName));\n      }\n\n      return this.addEventListener(target, eventName, handler);\n    }\n  }]);\n\n  return EventManagerPlugin;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar SharedStylesHost = /*#__PURE__*/function () {\n  function SharedStylesHost() {\n    _classCallCheck(this, SharedStylesHost);\n\n    /** @internal */\n    this._stylesSet = new Set();\n  }\n\n  _createClass(SharedStylesHost, [{\n    key: \"addStyles\",\n    value: function addStyles(styles) {\n      var _this2 = this;\n\n      var additions = new Set();\n      styles.forEach(function (style) {\n        if (!_this2._stylesSet.has(style)) {\n          _this2._stylesSet.add(style);\n\n          additions.add(style);\n        }\n      });\n      this.onStylesAdded(additions);\n    }\n  }, {\n    key: \"onStylesAdded\",\n    value: function onStylesAdded(additions) {}\n  }, {\n    key: \"getAllStyles\",\n    value: function getAllStyles() {\n      return Array.from(this._stylesSet);\n    }\n  }]);\n\n  return SharedStylesHost;\n}();\n\nSharedStylesHost.decorators = [{\n  type: Injectable\n}];\n\nvar DomSharedStylesHost = /*#__PURE__*/function (_SharedStylesHost) {\n  _inherits(DomSharedStylesHost, _SharedStylesHost);\n\n  var _super3 = _createSuper(DomSharedStylesHost);\n\n  function DomSharedStylesHost(_doc) {\n    var _this3;\n\n    _classCallCheck(this, DomSharedStylesHost);\n\n    _this3 = _super3.call(this);\n    _this3._doc = _doc;\n    _this3._hostNodes = new Set();\n    _this3._styleNodes = new Set();\n\n    _this3._hostNodes.add(_doc.head);\n\n    return _this3;\n  }\n\n  _createClass(DomSharedStylesHost, [{\n    key: \"_addStylesToHost\",\n    value: function _addStylesToHost(styles, host) {\n      var _this4 = this;\n\n      styles.forEach(function (style) {\n        var styleEl = _this4._doc.createElement('style');\n\n        styleEl.textContent = style;\n\n        _this4._styleNodes.add(host.appendChild(styleEl));\n      });\n    }\n  }, {\n    key: \"addHost\",\n    value: function addHost(hostNode) {\n      this._addStylesToHost(this._stylesSet, hostNode);\n\n      this._hostNodes.add(hostNode);\n    }\n  }, {\n    key: \"removeHost\",\n    value: function removeHost(hostNode) {\n      this._hostNodes.delete(hostNode);\n    }\n  }, {\n    key: \"onStylesAdded\",\n    value: function onStylesAdded(additions) {\n      var _this5 = this;\n\n      this._hostNodes.forEach(function (hostNode) {\n        return _this5._addStylesToHost(additions, hostNode);\n      });\n    }\n  }, {\n    key: \"ngOnDestroy\",\n    value: function ngOnDestroy() {\n      this._styleNodes.forEach(function (styleNode) {\n        return ɵgetDOM().remove(styleNode);\n      });\n    }\n  }]);\n\n  return DomSharedStylesHost;\n}(SharedStylesHost);\n\nDomSharedStylesHost.decorators = [{\n  type: Injectable\n}];\n\nDomSharedStylesHost.ctorParameters = function () {\n  return [{\n    type: undefined,\n    decorators: [{\n      type: Inject,\n      args: [DOCUMENT]\n    }]\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar NAMESPACE_URIS = {\n  'svg': 'http://www.w3.org/2000/svg',\n  'xhtml': 'http://www.w3.org/1999/xhtml',\n  'xlink': 'http://www.w3.org/1999/xlink',\n  'xml': 'http://www.w3.org/XML/1998/namespace',\n  'xmlns': 'http://www.w3.org/2000/xmlns/'\n};\nvar COMPONENT_REGEX = /%COMP%/g;\nvar NG_DEV_MODE = typeof ngDevMode === 'undefined' || !!ngDevMode;\nvar COMPONENT_VARIABLE = '%COMP%';\nvar HOST_ATTR = \"_nghost-\".concat(COMPONENT_VARIABLE);\nvar CONTENT_ATTR = \"_ngcontent-\".concat(COMPONENT_VARIABLE);\n\nfunction shimContentAttribute(componentShortId) {\n  return CONTENT_ATTR.replace(COMPONENT_REGEX, componentShortId);\n}\n\nfunction shimHostAttribute(componentShortId) {\n  return HOST_ATTR.replace(COMPONENT_REGEX, componentShortId);\n}\n\nfunction flattenStyles(compId, styles, target) {\n  for (var i = 0; i < styles.length; i++) {\n    var style = styles[i];\n\n    if (Array.isArray(style)) {\n      flattenStyles(compId, style, target);\n    } else {\n      style = style.replace(COMPONENT_REGEX, compId);\n      target.push(style);\n    }\n  }\n\n  return target;\n}\n\nfunction decoratePreventDefault(eventHandler) {\n  // `DebugNode.triggerEventHandler` needs to know if the listener was created with\n  // decoratePreventDefault or is a listener added outside the Angular context so it can handle the\n  // two differently. In the first case, the special '__ngUnwrap__' token is passed to the unwrap\n  // the listener (see below).\n  return function (event) {\n    // Ivy uses '__ngUnwrap__' as a special token that allows us to unwrap the function\n    // so that it can be invoked programmatically by `DebugNode.triggerEventHandler`. The debug_node\n    // can inspect the listener toString contents for the existence of this special token. Because\n    // the token is a string literal, it is ensured to not be modified by compiled code.\n    if (event === '__ngUnwrap__') {\n      return eventHandler;\n    }\n\n    var allowDefaultBehavior = eventHandler(event);\n\n    if (allowDefaultBehavior === false) {\n      // TODO(tbosch): move preventDefault into event plugins...\n      event.preventDefault();\n      event.returnValue = false;\n    }\n\n    return undefined;\n  };\n}\n\nvar hasLoggedNativeEncapsulationWarning = false;\n\nvar DomRendererFactory2 = /*#__PURE__*/function () {\n  function DomRendererFactory2(eventManager, sharedStylesHost, appId) {\n    _classCallCheck(this, DomRendererFactory2);\n\n    this.eventManager = eventManager;\n    this.sharedStylesHost = sharedStylesHost;\n    this.appId = appId;\n    this.rendererByCompId = new Map();\n    this.defaultRenderer = new DefaultDomRenderer2(eventManager);\n  }\n\n  _createClass(DomRendererFactory2, [{\n    key: \"createRenderer\",\n    value: function createRenderer(element, type) {\n      if (!element || !type) {\n        return this.defaultRenderer;\n      }\n\n      switch (type.encapsulation) {\n        case ViewEncapsulation.Emulated:\n          {\n            var renderer = this.rendererByCompId.get(type.id);\n\n            if (!renderer) {\n              renderer = new EmulatedEncapsulationDomRenderer2(this.eventManager, this.sharedStylesHost, type, this.appId);\n              this.rendererByCompId.set(type.id, renderer);\n            }\n\n            renderer.applyToHost(element);\n            return renderer;\n          }\n\n        case 1:\n        case ViewEncapsulation.ShadowDom:\n          // TODO(FW-2290): remove the `case 1:` fallback logic and the warning in v12.\n          if ((typeof ngDevMode === 'undefined' || ngDevMode) && !hasLoggedNativeEncapsulationWarning && type.encapsulation === 1) {\n            hasLoggedNativeEncapsulationWarning = true;\n            console.warn('ViewEncapsulation.Native is no longer supported. Falling back to ViewEncapsulation.ShadowDom. The fallback will be removed in v12.');\n          }\n\n          return new ShadowDomRenderer(this.eventManager, this.sharedStylesHost, element, type);\n\n        default:\n          {\n            if (!this.rendererByCompId.has(type.id)) {\n              var styles = flattenStyles(type.id, type.styles, []);\n              this.sharedStylesHost.addStyles(styles);\n              this.rendererByCompId.set(type.id, this.defaultRenderer);\n            }\n\n            return this.defaultRenderer;\n          }\n      }\n    }\n  }, {\n    key: \"begin\",\n    value: function begin() {}\n  }, {\n    key: \"end\",\n    value: function end() {}\n  }]);\n\n  return DomRendererFactory2;\n}();\n\nDomRendererFactory2.decorators = [{\n  type: Injectable\n}];\n\nDomRendererFactory2.ctorParameters = function () {\n  return [{\n    type: EventManager\n  }, {\n    type: DomSharedStylesHost\n  }, {\n    type: String,\n    decorators: [{\n      type: Inject,\n      args: [APP_ID]\n    }]\n  }];\n};\n\nvar DefaultDomRenderer2 = /*#__PURE__*/function () {\n  function DefaultDomRenderer2(eventManager) {\n    _classCallCheck(this, DefaultDomRenderer2);\n\n    this.eventManager = eventManager;\n    this.data = Object.create(null);\n  }\n\n  _createClass(DefaultDomRenderer2, [{\n    key: \"destroy\",\n    value: function destroy() {}\n  }, {\n    key: \"createElement\",\n    value: function createElement(name, namespace) {\n      if (namespace) {\n        // In cases where Ivy (not ViewEngine) is giving us the actual namespace, the look up by key\n        // will result in undefined, so we just return the namespace here.\n        return document.createElementNS(NAMESPACE_URIS[namespace] || namespace, name);\n      }\n\n      return document.createElement(name);\n    }\n  }, {\n    key: \"createComment\",\n    value: function createComment(value) {\n      return document.createComment(value);\n    }\n  }, {\n    key: \"createText\",\n    value: function createText(value) {\n      return document.createTextNode(value);\n    }\n  }, {\n    key: \"appendChild\",\n    value: function appendChild(parent, newChild) {\n      parent.appendChild(newChild);\n    }\n  }, {\n    key: \"insertBefore\",\n    value: function insertBefore(parent, newChild, refChild) {\n      if (parent) {\n        parent.insertBefore(newChild, refChild);\n      }\n    }\n  }, {\n    key: \"removeChild\",\n    value: function removeChild(parent, oldChild) {\n      if (parent) {\n        parent.removeChild(oldChild);\n      }\n    }\n  }, {\n    key: \"selectRootElement\",\n    value: function selectRootElement(selectorOrNode, preserveContent) {\n      var el = typeof selectorOrNode === 'string' ? document.querySelector(selectorOrNode) : selectorOrNode;\n\n      if (!el) {\n        throw new Error(\"The selector \\\"\".concat(selectorOrNode, \"\\\" did not match any elements\"));\n      }\n\n      if (!preserveContent) {\n        el.textContent = '';\n      }\n\n      return el;\n    }\n  }, {\n    key: \"parentNode\",\n    value: function parentNode(node) {\n      return node.parentNode;\n    }\n  }, {\n    key: \"nextSibling\",\n    value: function nextSibling(node) {\n      return node.nextSibling;\n    }\n  }, {\n    key: \"setAttribute\",\n    value: function setAttribute(el, name, value, namespace) {\n      if (namespace) {\n        name = namespace + ':' + name; // TODO(FW-811): Ivy may cause issues here because it's passing around\n        // full URIs for namespaces, therefore this lookup will fail.\n\n        var namespaceUri = NAMESPACE_URIS[namespace];\n\n        if (namespaceUri) {\n          el.setAttributeNS(namespaceUri, name, value);\n        } else {\n          el.setAttribute(name, value);\n        }\n      } else {\n        el.setAttribute(name, value);\n      }\n    }\n  }, {\n    key: \"removeAttribute\",\n    value: function removeAttribute(el, name, namespace) {\n      if (namespace) {\n        // TODO(FW-811): Ivy may cause issues here because it's passing around\n        // full URIs for namespaces, therefore this lookup will fail.\n        var namespaceUri = NAMESPACE_URIS[namespace];\n\n        if (namespaceUri) {\n          el.removeAttributeNS(namespaceUri, name);\n        } else {\n          // TODO(FW-811): Since ivy is passing around full URIs for namespaces\n          // this could result in properties like `http://www.w3.org/2000/svg:cx=\"123\"`,\n          // which is wrong.\n          el.removeAttribute(\"\".concat(namespace, \":\").concat(name));\n        }\n      } else {\n        el.removeAttribute(name);\n      }\n    }\n  }, {\n    key: \"addClass\",\n    value: function addClass(el, name) {\n      el.classList.add(name);\n    }\n  }, {\n    key: \"removeClass\",\n    value: function removeClass(el, name) {\n      el.classList.remove(name);\n    }\n  }, {\n    key: \"setStyle\",\n    value: function setStyle(el, style, value, flags) {\n      if (flags & (RendererStyleFlags2.DashCase | RendererStyleFlags2.Important)) {\n        el.style.setProperty(style, value, flags & RendererStyleFlags2.Important ? 'important' : '');\n      } else {\n        el.style[style] = value;\n      }\n    }\n  }, {\n    key: \"removeStyle\",\n    value: function removeStyle(el, style, flags) {\n      if (flags & RendererStyleFlags2.DashCase) {\n        el.style.removeProperty(style);\n      } else {\n        // IE requires '' instead of null\n        // see https://github.com/angular/angular/issues/7916\n        el.style[style] = '';\n      }\n    }\n  }, {\n    key: \"setProperty\",\n    value: function setProperty(el, name, value) {\n      NG_DEV_MODE && checkNoSyntheticProp(name, 'property');\n      el[name] = value;\n    }\n  }, {\n    key: \"setValue\",\n    value: function setValue(node, value) {\n      node.nodeValue = value;\n    }\n  }, {\n    key: \"listen\",\n    value: function listen(target, event, callback) {\n      NG_DEV_MODE && checkNoSyntheticProp(event, 'listener');\n\n      if (typeof target === 'string') {\n        return this.eventManager.addGlobalEventListener(target, event, decoratePreventDefault(callback));\n      }\n\n      return this.eventManager.addEventListener(target, event, decoratePreventDefault(callback));\n    }\n  }]);\n\n  return DefaultDomRenderer2;\n}();\n\nvar ɵ0$2 = function ɵ0$2() {\n  return '@'.charCodeAt(0);\n};\n\nvar AT_CHARCODE = ɵ0$2();\n\nfunction checkNoSyntheticProp(name, nameKind) {\n  if (name.charCodeAt(0) === AT_CHARCODE) {\n    throw new Error(\"Found the synthetic \".concat(nameKind, \" \").concat(name, \". Please include either \\\"BrowserAnimationsModule\\\" or \\\"NoopAnimationsModule\\\" in your application.\"));\n  }\n}\n\nvar EmulatedEncapsulationDomRenderer2 = /*#__PURE__*/function (_DefaultDomRenderer) {\n  _inherits(EmulatedEncapsulationDomRenderer2, _DefaultDomRenderer);\n\n  var _super4 = _createSuper(EmulatedEncapsulationDomRenderer2);\n\n  function EmulatedEncapsulationDomRenderer2(eventManager, sharedStylesHost, component, appId) {\n    var _this6;\n\n    _classCallCheck(this, EmulatedEncapsulationDomRenderer2);\n\n    _this6 = _super4.call(this, eventManager);\n    _this6.component = component;\n    var styles = flattenStyles(appId + '-' + component.id, component.styles, []);\n    sharedStylesHost.addStyles(styles);\n    _this6.contentAttr = shimContentAttribute(appId + '-' + component.id);\n    _this6.hostAttr = shimHostAttribute(appId + '-' + component.id);\n    return _this6;\n  }\n\n  _createClass(EmulatedEncapsulationDomRenderer2, [{\n    key: \"applyToHost\",\n    value: function applyToHost(element) {\n      _get(_getPrototypeOf(EmulatedEncapsulationDomRenderer2.prototype), \"setAttribute\", this).call(this, element, this.hostAttr, '');\n    }\n  }, {\n    key: \"createElement\",\n    value: function createElement(parent, name) {\n      var el = _get(_getPrototypeOf(EmulatedEncapsulationDomRenderer2.prototype), \"createElement\", this).call(this, parent, name);\n\n      _get(_getPrototypeOf(EmulatedEncapsulationDomRenderer2.prototype), \"setAttribute\", this).call(this, el, this.contentAttr, '');\n\n      return el;\n    }\n  }]);\n\n  return EmulatedEncapsulationDomRenderer2;\n}(DefaultDomRenderer2);\n\nvar ShadowDomRenderer = /*#__PURE__*/function (_DefaultDomRenderer2) {\n  _inherits(ShadowDomRenderer, _DefaultDomRenderer2);\n\n  var _super5 = _createSuper(ShadowDomRenderer);\n\n  function ShadowDomRenderer(eventManager, sharedStylesHost, hostEl, component) {\n    var _this7;\n\n    _classCallCheck(this, ShadowDomRenderer);\n\n    _this7 = _super5.call(this, eventManager);\n    _this7.sharedStylesHost = sharedStylesHost;\n    _this7.hostEl = hostEl;\n    _this7.shadowRoot = hostEl.attachShadow({\n      mode: 'open'\n    });\n\n    _this7.sharedStylesHost.addHost(_this7.shadowRoot);\n\n    var styles = flattenStyles(component.id, component.styles, []);\n\n    for (var i = 0; i < styles.length; i++) {\n      var styleEl = document.createElement('style');\n      styleEl.textContent = styles[i];\n\n      _this7.shadowRoot.appendChild(styleEl);\n    }\n\n    return _this7;\n  }\n\n  _createClass(ShadowDomRenderer, [{\n    key: \"nodeOrShadowRoot\",\n    value: function nodeOrShadowRoot(node) {\n      return node === this.hostEl ? this.shadowRoot : node;\n    }\n  }, {\n    key: \"destroy\",\n    value: function destroy() {\n      this.sharedStylesHost.removeHost(this.shadowRoot);\n    }\n  }, {\n    key: \"appendChild\",\n    value: function appendChild(parent, newChild) {\n      return _get(_getPrototypeOf(ShadowDomRenderer.prototype), \"appendChild\", this).call(this, this.nodeOrShadowRoot(parent), newChild);\n    }\n  }, {\n    key: \"insertBefore\",\n    value: function insertBefore(parent, newChild, refChild) {\n      return _get(_getPrototypeOf(ShadowDomRenderer.prototype), \"insertBefore\", this).call(this, this.nodeOrShadowRoot(parent), newChild, refChild);\n    }\n  }, {\n    key: \"removeChild\",\n    value: function removeChild(parent, oldChild) {\n      return _get(_getPrototypeOf(ShadowDomRenderer.prototype), \"removeChild\", this).call(this, this.nodeOrShadowRoot(parent), oldChild);\n    }\n  }, {\n    key: \"parentNode\",\n    value: function parentNode(node) {\n      return this.nodeOrShadowRoot(_get(_getPrototypeOf(ShadowDomRenderer.prototype), \"parentNode\", this).call(this, this.nodeOrShadowRoot(node)));\n    }\n  }]);\n\n  return ShadowDomRenderer;\n}(DefaultDomRenderer2);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar DomEventsPlugin = /*#__PURE__*/function (_EventManagerPlugin) {\n  _inherits(DomEventsPlugin, _EventManagerPlugin);\n\n  var _super6 = _createSuper(DomEventsPlugin);\n\n  function DomEventsPlugin(doc) {\n    _classCallCheck(this, DomEventsPlugin);\n\n    return _super6.call(this, doc);\n  } // This plugin should come last in the list of plugins, because it accepts all\n  // events.\n\n\n  _createClass(DomEventsPlugin, [{\n    key: \"supports\",\n    value: function supports(eventName) {\n      return true;\n    }\n  }, {\n    key: \"addEventListener\",\n    value: function addEventListener(element, eventName, handler) {\n      var _this8 = this;\n\n      element.addEventListener(eventName, handler, false);\n      return function () {\n        return _this8.removeEventListener(element, eventName, handler);\n      };\n    }\n  }, {\n    key: \"removeEventListener\",\n    value: function removeEventListener(target, eventName, callback) {\n      return target.removeEventListener(eventName, callback);\n    }\n  }]);\n\n  return DomEventsPlugin;\n}(EventManagerPlugin);\n\nDomEventsPlugin.decorators = [{\n  type: Injectable\n}];\n\nDomEventsPlugin.ctorParameters = function () {\n  return [{\n    type: undefined,\n    decorators: [{\n      type: Inject,\n      args: [DOCUMENT]\n    }]\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Supported HammerJS recognizer event names.\n */\n\n\nvar EVENT_NAMES = {\n  // pan\n  'pan': true,\n  'panstart': true,\n  'panmove': true,\n  'panend': true,\n  'pancancel': true,\n  'panleft': true,\n  'panright': true,\n  'panup': true,\n  'pandown': true,\n  // pinch\n  'pinch': true,\n  'pinchstart': true,\n  'pinchmove': true,\n  'pinchend': true,\n  'pinchcancel': true,\n  'pinchin': true,\n  'pinchout': true,\n  // press\n  'press': true,\n  'pressup': true,\n  // rotate\n  'rotate': true,\n  'rotatestart': true,\n  'rotatemove': true,\n  'rotateend': true,\n  'rotatecancel': true,\n  // swipe\n  'swipe': true,\n  'swipeleft': true,\n  'swiperight': true,\n  'swipeup': true,\n  'swipedown': true,\n  // tap\n  'tap': true\n};\n/**\n * DI token for providing [HammerJS](http://hammerjs.github.io/) support to Angular.\n * @see `HammerGestureConfig`\n *\n * @ngModule HammerModule\n * @publicApi\n */\n\nvar HAMMER_GESTURE_CONFIG = new InjectionToken('HammerGestureConfig');\n/**\n * Injection token used to provide a {@link HammerLoader} to Angular.\n *\n * @publicApi\n */\n\nvar HAMMER_LOADER = new InjectionToken('HammerLoader');\n/**\n * An injectable [HammerJS Manager](http://hammerjs.github.io/api/#hammer.manager)\n * for gesture recognition. Configures specific event recognition.\n * @publicApi\n */\n\nvar HammerGestureConfig = /*#__PURE__*/function () {\n  function HammerGestureConfig() {\n    _classCallCheck(this, HammerGestureConfig);\n\n    /**\n     * A set of supported event names for gestures to be used in Angular.\n     * Angular supports all built-in recognizers, as listed in\n     * [HammerJS documentation](http://hammerjs.github.io/).\n     */\n    this.events = [];\n    /**\n     * Maps gesture event names to a set of configuration options\n     * that specify overrides to the default values for specific properties.\n     *\n     * The key is a supported event name to be configured,\n     * and the options object contains a set of properties, with override values\n     * to be applied to the named recognizer event.\n     * For example, to disable recognition of the rotate event, specify\n     *  `{\"rotate\": {\"enable\": false}}`.\n     *\n     * Properties that are not present take the HammerJS default values.\n     * For information about which properties are supported for which events,\n     * and their allowed and default values, see\n     * [HammerJS documentation](http://hammerjs.github.io/).\n     *\n     */\n\n    this.overrides = {};\n  }\n  /**\n   * Creates a [HammerJS Manager](http://hammerjs.github.io/api/#hammer.manager)\n   * and attaches it to a given HTML element.\n   * @param element The element that will recognize gestures.\n   * @returns A HammerJS event-manager object.\n   */\n\n\n  _createClass(HammerGestureConfig, [{\n    key: \"buildHammer\",\n    value: function buildHammer(element) {\n      var mc = new Hammer(element, this.options);\n      mc.get('pinch').set({\n        enable: true\n      });\n      mc.get('rotate').set({\n        enable: true\n      });\n\n      for (var eventName in this.overrides) {\n        mc.get(eventName).set(this.overrides[eventName]);\n      }\n\n      return mc;\n    }\n  }]);\n\n  return HammerGestureConfig;\n}();\n\nHammerGestureConfig.decorators = [{\n  type: Injectable\n}];\n/**\n * Event plugin that adds Hammer support to an application.\n *\n * @ngModule HammerModule\n */\n\nvar HammerGesturesPlugin = /*#__PURE__*/function (_EventManagerPlugin2) {\n  _inherits(HammerGesturesPlugin, _EventManagerPlugin2);\n\n  var _super7 = _createSuper(HammerGesturesPlugin);\n\n  function HammerGesturesPlugin(doc, _config, console, loader) {\n    var _this9;\n\n    _classCallCheck(this, HammerGesturesPlugin);\n\n    _this9 = _super7.call(this, doc);\n    _this9._config = _config;\n    _this9.console = console;\n    _this9.loader = loader;\n    return _this9;\n  }\n\n  _createClass(HammerGesturesPlugin, [{\n    key: \"supports\",\n    value: function supports(eventName) {\n      if (!EVENT_NAMES.hasOwnProperty(eventName.toLowerCase()) && !this.isCustomEvent(eventName)) {\n        return false;\n      }\n\n      if (!window.Hammer && !this.loader) {\n        this.console.warn(\"The \\\"\".concat(eventName, \"\\\" event cannot be bound because Hammer.JS is not \") + \"loaded and no custom loader has been specified.\");\n        return false;\n      }\n\n      return true;\n    }\n  }, {\n    key: \"addEventListener\",\n    value: function addEventListener(element, eventName, handler) {\n      var _this10 = this;\n\n      var zone = this.manager.getZone();\n      eventName = eventName.toLowerCase(); // If Hammer is not present but a loader is specified, we defer adding the event listener\n      // until Hammer is loaded.\n\n      if (!window.Hammer && this.loader) {\n        // This `addEventListener` method returns a function to remove the added listener.\n        // Until Hammer is loaded, the returned function needs to *cancel* the registration rather\n        // than remove anything.\n        var cancelRegistration = false;\n\n        var deregister = function deregister() {\n          cancelRegistration = true;\n        };\n\n        this.loader().then(function () {\n          // If Hammer isn't actually loaded when the custom loader resolves, give up.\n          if (!window.Hammer) {\n            _this10.console.warn(\"The custom HAMMER_LOADER completed, but Hammer.JS is not present.\");\n\n            deregister = function deregister() {};\n\n            return;\n          }\n\n          if (!cancelRegistration) {\n            // Now that Hammer is loaded and the listener is being loaded for real,\n            // the deregistration function changes from canceling registration to removal.\n            deregister = _this10.addEventListener(element, eventName, handler);\n          }\n        }).catch(function () {\n          _this10.console.warn(\"The \\\"\".concat(eventName, \"\\\" event cannot be bound because the custom \") + \"Hammer.JS loader failed.\");\n\n          deregister = function deregister() {};\n        }); // Return a function that *executes* `deregister` (and not `deregister` itself) so that we\n        // can change the behavior of `deregister` once the listener is added. Using a closure in\n        // this way allows us to avoid any additional data structures to track listener removal.\n\n        return function () {\n          deregister();\n        };\n      }\n\n      return zone.runOutsideAngular(function () {\n        // Creating the manager bind events, must be done outside of angular\n        var mc = _this10._config.buildHammer(element);\n\n        var callback = function callback(eventObj) {\n          zone.runGuarded(function () {\n            handler(eventObj);\n          });\n        };\n\n        mc.on(eventName, callback);\n        return function () {\n          mc.off(eventName, callback); // destroy mc to prevent memory leak\n\n          if (typeof mc.destroy === 'function') {\n            mc.destroy();\n          }\n        };\n      });\n    }\n  }, {\n    key: \"isCustomEvent\",\n    value: function isCustomEvent(eventName) {\n      return this._config.events.indexOf(eventName) > -1;\n    }\n  }]);\n\n  return HammerGesturesPlugin;\n}(EventManagerPlugin);\n\nHammerGesturesPlugin.decorators = [{\n  type: Injectable\n}];\n\nHammerGesturesPlugin.ctorParameters = function () {\n  return [{\n    type: undefined,\n    decorators: [{\n      type: Inject,\n      args: [DOCUMENT]\n    }]\n  }, {\n    type: HammerGestureConfig,\n    decorators: [{\n      type: Inject,\n      args: [HAMMER_GESTURE_CONFIG]\n    }]\n  }, {\n    type: ɵConsole\n  }, {\n    type: undefined,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Inject,\n      args: [HAMMER_LOADER]\n    }]\n  }];\n};\n/**\n * In Ivy, support for Hammer gestures is optional, so applications must\n * import the `HammerModule` at root to turn on support. This means that\n * Hammer-specific code can be tree-shaken away if not needed.\n */\n\n\nvar HAMMER_PROVIDERS__POST_R3__ = [];\n/**\n * In View Engine, support for Hammer gestures is built-in by default.\n */\n\nvar HAMMER_PROVIDERS__PRE_R3__ = [{\n  provide: EVENT_MANAGER_PLUGINS,\n  useClass: HammerGesturesPlugin,\n  multi: true,\n  deps: [DOCUMENT, HAMMER_GESTURE_CONFIG, ɵConsole, [new Optional(), HAMMER_LOADER]]\n}, {\n  provide: HAMMER_GESTURE_CONFIG,\n  useClass: HammerGestureConfig,\n  deps: []\n}];\nvar HAMMER_PROVIDERS = HAMMER_PROVIDERS__PRE_R3__;\n/**\n * Adds support for HammerJS.\n *\n * Import this module at the root of your application so that Angular can work with\n * HammerJS to detect gesture events.\n *\n * Note that applications still need to include the HammerJS script itself. This module\n * simply sets up the coordination layer between HammerJS and Angular's EventManager.\n *\n * @publicApi\n */\n\nvar HammerModule = /*#__PURE__*/_createClass(function HammerModule() {\n  _classCallCheck(this, HammerModule);\n});\n\nHammerModule.decorators = [{\n  type: NgModule,\n  args: [{\n    providers: HAMMER_PROVIDERS__PRE_R3__\n  }]\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Defines supported modifiers for key events.\n */\n\nvar MODIFIER_KEYS = ['alt', 'control', 'meta', 'shift'];\nvar DOM_KEY_LOCATION_NUMPAD = 3; // Map to convert some key or keyIdentifier values to what will be returned by getEventKey\n\nvar _keyMap = {\n  // The following values are here for cross-browser compatibility and to match the W3C standard\n  // cf http://www.w3.org/TR/DOM-Level-3-Events-key/\n  '\\b': 'Backspace',\n  '\\t': 'Tab',\n  '\\x7F': 'Delete',\n  '\\x1B': 'Escape',\n  'Del': 'Delete',\n  'Esc': 'Escape',\n  'Left': 'ArrowLeft',\n  'Right': 'ArrowRight',\n  'Up': 'ArrowUp',\n  'Down': 'ArrowDown',\n  'Menu': 'ContextMenu',\n  'Scroll': 'ScrollLock',\n  'Win': 'OS'\n}; // There is a bug in Chrome for numeric keypad keys:\n// https://code.google.com/p/chromium/issues/detail?id=155654\n// 1, 2, 3 ... are reported as A, B, C ...\n\nvar _chromeNumKeyPadMap = {\n  'A': '1',\n  'B': '2',\n  'C': '3',\n  'D': '4',\n  'E': '5',\n  'F': '6',\n  'G': '7',\n  'H': '8',\n  'I': '9',\n  'J': '*',\n  'K': '+',\n  'M': '-',\n  'N': '.',\n  'O': '/',\n  '\\x60': '0',\n  '\\x90': 'NumLock'\n};\n\nvar ɵ0$3 = function ɵ0$3(event) {\n  return event.altKey;\n},\n    ɵ1 = function ɵ1(event) {\n  return event.ctrlKey;\n},\n    ɵ2 = function ɵ2(event) {\n  return event.metaKey;\n},\n    ɵ3 = function ɵ3(event) {\n  return event.shiftKey;\n};\n/**\n * Retrieves modifiers from key-event objects.\n */\n\n\nvar MODIFIER_KEY_GETTERS = {\n  'alt': ɵ0$3,\n  'control': ɵ1,\n  'meta': ɵ2,\n  'shift': ɵ3\n};\n/**\n * @publicApi\n * A browser plug-in that provides support for handling of key events in Angular.\n */\n\nvar KeyEventsPlugin = /*#__PURE__*/function (_EventManagerPlugin3) {\n  _inherits(KeyEventsPlugin, _EventManagerPlugin3);\n\n  var _super8 = _createSuper(KeyEventsPlugin);\n\n  /**\n   * Initializes an instance of the browser plug-in.\n   * @param doc The document in which key events will be detected.\n   */\n  function KeyEventsPlugin(doc) {\n    _classCallCheck(this, KeyEventsPlugin);\n\n    return _super8.call(this, doc);\n  }\n  /**\n   * Reports whether a named key event is supported.\n   * @param eventName The event name to query.\n   * @return True if the named key event is supported.\n   */\n\n\n  _createClass(KeyEventsPlugin, [{\n    key: \"supports\",\n    value: function supports(eventName) {\n      return KeyEventsPlugin.parseEventName(eventName) != null;\n    }\n    /**\n     * Registers a handler for a specific element and key event.\n     * @param element The HTML element to receive event notifications.\n     * @param eventName The name of the key event to listen for.\n     * @param handler A function to call when the notification occurs. Receives the\n     * event object as an argument.\n     * @returns The key event that was registered.\n     */\n\n  }, {\n    key: \"addEventListener\",\n    value: function addEventListener(element, eventName, handler) {\n      var parsedEvent = KeyEventsPlugin.parseEventName(eventName);\n      var outsideHandler = KeyEventsPlugin.eventCallback(parsedEvent['fullKey'], handler, this.manager.getZone());\n      return this.manager.getZone().runOutsideAngular(function () {\n        return ɵgetDOM().onAndCancel(element, parsedEvent['domEventName'], outsideHandler);\n      });\n    }\n  }], [{\n    key: \"parseEventName\",\n    value: function parseEventName(eventName) {\n      var parts = eventName.toLowerCase().split('.');\n      var domEventName = parts.shift();\n\n      if (parts.length === 0 || !(domEventName === 'keydown' || domEventName === 'keyup')) {\n        return null;\n      }\n\n      var key = KeyEventsPlugin._normalizeKey(parts.pop());\n\n      var fullKey = '';\n      MODIFIER_KEYS.forEach(function (modifierName) {\n        var index = parts.indexOf(modifierName);\n\n        if (index > -1) {\n          parts.splice(index, 1);\n          fullKey += modifierName + '.';\n        }\n      });\n      fullKey += key;\n\n      if (parts.length != 0 || key.length === 0) {\n        // returning null instead of throwing to let another plugin process the event\n        return null;\n      } // NOTE: Please don't rewrite this as so, as it will break JSCompiler property renaming.\n      //       The code must remain in the `result['domEventName']` form.\n      // return {domEventName, fullKey};\n\n\n      var result = {};\n      result['domEventName'] = domEventName;\n      result['fullKey'] = fullKey;\n      return result;\n    }\n  }, {\n    key: \"getEventFullKey\",\n    value: function getEventFullKey(event) {\n      var fullKey = '';\n      var key = getEventKey(event);\n      key = key.toLowerCase();\n\n      if (key === ' ') {\n        key = 'space'; // for readability\n      } else if (key === '.') {\n        key = 'dot'; // because '.' is used as a separator in event names\n      }\n\n      MODIFIER_KEYS.forEach(function (modifierName) {\n        if (modifierName != key) {\n          var modifierGetter = MODIFIER_KEY_GETTERS[modifierName];\n\n          if (modifierGetter(event)) {\n            fullKey += modifierName + '.';\n          }\n        }\n      });\n      fullKey += key;\n      return fullKey;\n    }\n    /**\n     * Configures a handler callback for a key event.\n     * @param fullKey The event name that combines all simultaneous keystrokes.\n     * @param handler The function that responds to the key event.\n     * @param zone The zone in which the event occurred.\n     * @returns A callback function.\n     */\n\n  }, {\n    key: \"eventCallback\",\n    value: function eventCallback(fullKey, handler, zone) {\n      return function (event\n      /** TODO #9100 */\n      ) {\n        if (KeyEventsPlugin.getEventFullKey(event) === fullKey) {\n          zone.runGuarded(function () {\n            return handler(event);\n          });\n        }\n      };\n    }\n    /** @internal */\n\n  }, {\n    key: \"_normalizeKey\",\n    value: function _normalizeKey(keyName) {\n      // TODO: switch to a Map if the mapping grows too much\n      switch (keyName) {\n        case 'esc':\n          return 'escape';\n\n        default:\n          return keyName;\n      }\n    }\n  }]);\n\n  return KeyEventsPlugin;\n}(EventManagerPlugin);\n\nKeyEventsPlugin.decorators = [{\n  type: Injectable\n}];\n\nKeyEventsPlugin.ctorParameters = function () {\n  return [{\n    type: undefined,\n    decorators: [{\n      type: Inject,\n      args: [DOCUMENT]\n    }]\n  }];\n};\n\nfunction getEventKey(event) {\n  var key = event.key;\n\n  if (key == null) {\n    key = event.keyIdentifier; // keyIdentifier is defined in the old draft of DOM Level 3 Events implemented by Chrome and\n    // Safari cf\n    // http://www.w3.org/TR/2007/WD-DOM-Level-3-Events-20071221/events.html#Events-KeyboardEvents-Interfaces\n\n    if (key == null) {\n      return 'Unidentified';\n    }\n\n    if (key.startsWith('U+')) {\n      key = String.fromCharCode(parseInt(key.substring(2), 16));\n\n      if (event.location === DOM_KEY_LOCATION_NUMPAD && _chromeNumKeyPadMap.hasOwnProperty(key)) {\n        // There is a bug in Chrome for numeric keypad keys:\n        // https://code.google.com/p/chromium/issues/detail?id=155654\n        // 1, 2, 3 ... are reported as A, B, C ...\n        key = _chromeNumKeyPadMap[key];\n      }\n    }\n  }\n\n  return _keyMap[key] || key;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * DomSanitizer helps preventing Cross Site Scripting Security bugs (XSS) by sanitizing\n * values to be safe to use in the different DOM contexts.\n *\n * For example, when binding a URL in an `<a [href]=\"someValue\">` hyperlink, `someValue` will be\n * sanitized so that an attacker cannot inject e.g. a `javascript:` URL that would execute code on\n * the website.\n *\n * In specific situations, it might be necessary to disable sanitization, for example if the\n * application genuinely needs to produce a `javascript:` style link with a dynamic value in it.\n * Users can bypass security by constructing a value with one of the `bypassSecurityTrust...`\n * methods, and then binding to that value from the template.\n *\n * These situations should be very rare, and extraordinary care must be taken to avoid creating a\n * Cross Site Scripting (XSS) security bug!\n *\n * When using `bypassSecurityTrust...`, make sure to call the method as early as possible and as\n * close as possible to the source of the value, to make it easy to verify no security bug is\n * created by its use.\n *\n * It is not required (and not recommended) to bypass security if the value is safe, e.g. a URL that\n * does not start with a suspicious protocol, or an HTML snippet that does not contain dangerous\n * code. The sanitizer leaves safe values intact.\n *\n * @security Calling any of the `bypassSecurityTrust...` APIs disables Angular's built-in\n * sanitization for the value passed in. Carefully check and audit all values and code paths going\n * into this call. Make sure any user data is appropriately escaped for this security context.\n * For more detail, see the [Security Guide](http://g.co/ng/security).\n *\n * @publicApi\n */\n\n\nvar DomSanitizer = /*#__PURE__*/_createClass(function DomSanitizer() {\n  _classCallCheck(this, DomSanitizer);\n});\n\nDomSanitizer.ɵprov = ɵɵdefineInjectable({\n  factory: function DomSanitizer_Factory() {\n    return ɵɵinject(DomSanitizerImpl);\n  },\n  token: DomSanitizer,\n  providedIn: \"root\"\n});\nDomSanitizer.decorators = [{\n  type: Injectable,\n  args: [{\n    providedIn: 'root',\n    useExisting: forwardRef(function () {\n      return DomSanitizerImpl;\n    })\n  }]\n}];\n\nfunction domSanitizerImplFactory(injector) {\n  return new DomSanitizerImpl(injector.get(DOCUMENT));\n}\n\nvar DomSanitizerImpl = /*#__PURE__*/function (_DomSanitizer) {\n  _inherits(DomSanitizerImpl, _DomSanitizer);\n\n  var _super9 = _createSuper(DomSanitizerImpl);\n\n  function DomSanitizerImpl(_doc) {\n    var _this11;\n\n    _classCallCheck(this, DomSanitizerImpl);\n\n    _this11 = _super9.call(this);\n    _this11._doc = _doc;\n    return _this11;\n  }\n\n  _createClass(DomSanitizerImpl, [{\n    key: \"sanitize\",\n    value: function sanitize(ctx, value) {\n      if (value == null) return null;\n\n      switch (ctx) {\n        case SecurityContext.NONE:\n          return value;\n\n        case SecurityContext.HTML:\n          if (ɵallowSanitizationBypassAndThrow(value, \"HTML\"\n          /* Html */\n          )) {\n            return ɵunwrapSafeValue(value);\n          }\n\n          return ɵ_sanitizeHtml(this._doc, String(value));\n\n        case SecurityContext.STYLE:\n          if (ɵallowSanitizationBypassAndThrow(value, \"Style\"\n          /* Style */\n          )) {\n            return ɵunwrapSafeValue(value);\n          }\n\n          return value;\n\n        case SecurityContext.SCRIPT:\n          if (ɵallowSanitizationBypassAndThrow(value, \"Script\"\n          /* Script */\n          )) {\n            return ɵunwrapSafeValue(value);\n          }\n\n          throw new Error('unsafe value used in a script context');\n\n        case SecurityContext.URL:\n          var type = ɵgetSanitizationBypassType(value);\n\n          if (ɵallowSanitizationBypassAndThrow(value, \"URL\"\n          /* Url */\n          )) {\n            return ɵunwrapSafeValue(value);\n          }\n\n          return ɵ_sanitizeUrl(String(value));\n\n        case SecurityContext.RESOURCE_URL:\n          if (ɵallowSanitizationBypassAndThrow(value, \"ResourceURL\"\n          /* ResourceUrl */\n          )) {\n            return ɵunwrapSafeValue(value);\n          }\n\n          throw new Error('unsafe value used in a resource URL context (see http://g.co/ng/security#xss)');\n\n        default:\n          throw new Error(\"Unexpected SecurityContext \".concat(ctx, \" (see http://g.co/ng/security#xss)\"));\n      }\n    }\n  }, {\n    key: \"bypassSecurityTrustHtml\",\n    value: function bypassSecurityTrustHtml(value) {\n      return ɵbypassSanitizationTrustHtml(value);\n    }\n  }, {\n    key: \"bypassSecurityTrustStyle\",\n    value: function bypassSecurityTrustStyle(value) {\n      return ɵbypassSanitizationTrustStyle(value);\n    }\n  }, {\n    key: \"bypassSecurityTrustScript\",\n    value: function bypassSecurityTrustScript(value) {\n      return ɵbypassSanitizationTrustScript(value);\n    }\n  }, {\n    key: \"bypassSecurityTrustUrl\",\n    value: function bypassSecurityTrustUrl(value) {\n      return ɵbypassSanitizationTrustUrl(value);\n    }\n  }, {\n    key: \"bypassSecurityTrustResourceUrl\",\n    value: function bypassSecurityTrustResourceUrl(value) {\n      return ɵbypassSanitizationTrustResourceUrl(value);\n    }\n  }]);\n\n  return DomSanitizerImpl;\n}(DomSanitizer);\n\nDomSanitizerImpl.ɵprov = ɵɵdefineInjectable({\n  factory: function DomSanitizerImpl_Factory() {\n    return domSanitizerImplFactory(ɵɵinject(INJECTOR));\n  },\n  token: DomSanitizerImpl,\n  providedIn: \"root\"\n});\nDomSanitizerImpl.decorators = [{\n  type: Injectable,\n  args: [{\n    providedIn: 'root',\n    useFactory: domSanitizerImplFactory,\n    deps: [Injector]\n  }]\n}];\n\nDomSanitizerImpl.ctorParameters = function () {\n  return [{\n    type: undefined,\n    decorators: [{\n      type: Inject,\n      args: [DOCUMENT]\n    }]\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction initDomAdapter() {\n  BrowserDomAdapter.makeCurrent();\n  BrowserGetTestability.init();\n}\n\nfunction errorHandler() {\n  return new ErrorHandler();\n}\n\nfunction _document() {\n  // Tell ivy about the global document\n  ɵsetDocument(document);\n  return document;\n}\n\nvar ɵ0$4 = ɵPLATFORM_BROWSER_ID;\nvar INTERNAL_BROWSER_PLATFORM_PROVIDERS = [{\n  provide: PLATFORM_ID,\n  useValue: ɵ0$4\n}, {\n  provide: PLATFORM_INITIALIZER,\n  useValue: initDomAdapter,\n  multi: true\n}, {\n  provide: DOCUMENT,\n  useFactory: _document,\n  deps: []\n}];\nvar BROWSER_SANITIZATION_PROVIDERS__PRE_R3__ = [{\n  provide: Sanitizer,\n  useExisting: DomSanitizer\n}, {\n  provide: DomSanitizer,\n  useClass: DomSanitizerImpl,\n  deps: [DOCUMENT]\n}];\nvar BROWSER_SANITIZATION_PROVIDERS__POST_R3__ = [];\n/**\n * @security Replacing built-in sanitization providers exposes the application to XSS risks.\n * Attacker-controlled data introduced by an unsanitized provider could expose your\n * application to XSS risks. For more detail, see the [Security Guide](http://g.co/ng/security).\n * @publicApi\n */\n\nvar BROWSER_SANITIZATION_PROVIDERS = BROWSER_SANITIZATION_PROVIDERS__PRE_R3__;\n/**\n * A factory function that returns a `PlatformRef` instance associated with browser service\n * providers.\n *\n * @publicApi\n */\n\nvar platformBrowser = createPlatformFactory(platformCore, 'browser', INTERNAL_BROWSER_PLATFORM_PROVIDERS);\nvar BROWSER_MODULE_PROVIDERS = [BROWSER_SANITIZATION_PROVIDERS, {\n  provide: ɵINJECTOR_SCOPE,\n  useValue: 'root'\n}, {\n  provide: ErrorHandler,\n  useFactory: errorHandler,\n  deps: []\n}, {\n  provide: EVENT_MANAGER_PLUGINS,\n  useClass: DomEventsPlugin,\n  multi: true,\n  deps: [DOCUMENT, NgZone, PLATFORM_ID]\n}, {\n  provide: EVENT_MANAGER_PLUGINS,\n  useClass: KeyEventsPlugin,\n  multi: true,\n  deps: [DOCUMENT]\n}, HAMMER_PROVIDERS, {\n  provide: DomRendererFactory2,\n  useClass: DomRendererFactory2,\n  deps: [EventManager, DomSharedStylesHost, APP_ID]\n}, {\n  provide: RendererFactory2,\n  useExisting: DomRendererFactory2\n}, {\n  provide: SharedStylesHost,\n  useExisting: DomSharedStylesHost\n}, {\n  provide: DomSharedStylesHost,\n  useClass: DomSharedStylesHost,\n  deps: [DOCUMENT]\n}, {\n  provide: Testability,\n  useClass: Testability,\n  deps: [NgZone]\n}, {\n  provide: EventManager,\n  useClass: EventManager,\n  deps: [EVENT_MANAGER_PLUGINS, NgZone]\n}, ELEMENT_PROBE_PROVIDERS];\n/**\n * Exports required infrastructure for all Angular apps.\n * Included by default in all Angular apps created with the CLI\n * `new` command.\n * Re-exports `CommonModule` and `ApplicationModule`, making their\n * exports and providers available to all apps.\n *\n * @publicApi\n */\n\nvar BrowserModule = /*#__PURE__*/function () {\n  function BrowserModule(parentModule) {\n    _classCallCheck(this, BrowserModule);\n\n    if (parentModule) {\n      throw new Error(\"BrowserModule has already been loaded. If you need access to common directives such as NgIf and NgFor from a lazy loaded module, import CommonModule instead.\");\n    }\n  }\n  /**\n   * Configures a browser-based app to transition from a server-rendered app, if\n   * one is present on the page.\n   *\n   * @param params An object containing an identifier for the app to transition.\n   * The ID must match between the client and server versions of the app.\n   * @returns The reconfigured `BrowserModule` to import into the app's root `AppModule`.\n   */\n\n\n  _createClass(BrowserModule, null, [{\n    key: \"withServerTransition\",\n    value: function withServerTransition(params) {\n      return {\n        ngModule: BrowserModule,\n        providers: [{\n          provide: APP_ID,\n          useValue: params.appId\n        }, {\n          provide: TRANSITION_ID,\n          useExisting: APP_ID\n        }, SERVER_TRANSITION_PROVIDERS]\n      };\n    }\n  }]);\n\n  return BrowserModule;\n}();\n\nBrowserModule.decorators = [{\n  type: NgModule,\n  args: [{\n    providers: BROWSER_MODULE_PROVIDERS,\n    exports: [CommonModule, ApplicationModule]\n  }]\n}];\n\nBrowserModule.ctorParameters = function () {\n  return [{\n    type: BrowserModule,\n    decorators: [{\n      type: Optional\n    }, {\n      type: SkipSelf\n    }, {\n      type: Inject,\n      args: [BrowserModule]\n    }]\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Factory to create a `Meta` service instance for the current DOM document.\n */\n\n\nfunction createMeta() {\n  return new Meta(ɵɵinject(DOCUMENT));\n}\n/**\n * A service for managing HTML `<meta>` tags.\n *\n * Properties of the `MetaDefinition` object match the attributes of the\n * HTML `<meta>` tag. These tags define document metadata that is important for\n * things like configuring a Content Security Policy, defining browser compatibility\n * and security settings, setting HTTP Headers, defining rich content for social sharing,\n * and Search Engine Optimization (SEO).\n *\n * To identify specific `<meta>` tags in a document, use an attribute selection\n * string in the format `\"tag_attribute='value string'\"`.\n * For example, an `attrSelector` value of `\"name='description'\"` matches a tag\n * whose `name` attribute has the value `\"description\"`.\n * Selectors are used with the `querySelector()` Document method,\n * in the format `meta[{attrSelector}]`.\n *\n * @see [HTML meta tag](https://developer.mozilla.org/docs/Web/HTML/Element/meta)\n * @see [Document.querySelector()](https://developer.mozilla.org/docs/Web/API/Document/querySelector)\n *\n *\n * @publicApi\n */\n\n\nvar Meta = /*#__PURE__*/function () {\n  function Meta(_doc) {\n    _classCallCheck(this, Meta);\n\n    this._doc = _doc;\n    this._dom = ɵgetDOM();\n  }\n  /**\n   * Retrieves or creates a specific `<meta>` tag element in the current HTML document.\n   * In searching for an existing tag, Angular attempts to match the `name` or `property` attribute\n   * values in the provided tag definition, and verifies that all other attribute values are equal.\n   * If an existing element is found, it is returned and is not modified in any way.\n   * @param tag The definition of a `<meta>` element to match or create.\n   * @param forceCreation True to create a new element without checking whether one already exists.\n   * @returns The existing element with the same attributes and values if found,\n   * the new element if no match is found, or `null` if the tag parameter is not defined.\n   */\n\n\n  _createClass(Meta, [{\n    key: \"addTag\",\n    value: function addTag(tag) {\n      var forceCreation = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n      if (!tag) return null;\n      return this._getOrCreateElement(tag, forceCreation);\n    }\n    /**\n     * Retrieves or creates a set of `<meta>` tag elements in the current HTML document.\n     * In searching for an existing tag, Angular attempts to match the `name` or `property` attribute\n     * values in the provided tag definition, and verifies that all other attribute values are equal.\n     * @param tags An array of tag definitions to match or create.\n     * @param forceCreation True to create new elements without checking whether they already exist.\n     * @returns The matching elements if found, or the new elements.\n     */\n\n  }, {\n    key: \"addTags\",\n    value: function addTags(tags) {\n      var _this12 = this;\n\n      var forceCreation = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n      if (!tags) return [];\n      return tags.reduce(function (result, tag) {\n        if (tag) {\n          result.push(_this12._getOrCreateElement(tag, forceCreation));\n        }\n\n        return result;\n      }, []);\n    }\n    /**\n     * Retrieves a `<meta>` tag element in the current HTML document.\n     * @param attrSelector The tag attribute and value to match against, in the format\n     * `\"tag_attribute='value string'\"`.\n     * @returns The matching element, if any.\n     */\n\n  }, {\n    key: \"getTag\",\n    value: function getTag(attrSelector) {\n      if (!attrSelector) return null;\n      return this._doc.querySelector(\"meta[\".concat(attrSelector, \"]\")) || null;\n    }\n    /**\n     * Retrieves a set of `<meta>` tag elements in the current HTML document.\n     * @param attrSelector The tag attribute and value to match against, in the format\n     * `\"tag_attribute='value string'\"`.\n     * @returns The matching elements, if any.\n     */\n\n  }, {\n    key: \"getTags\",\n    value: function getTags(attrSelector) {\n      if (!attrSelector) return [];\n\n      var list\n      /*NodeList*/\n      = this._doc.querySelectorAll(\"meta[\".concat(attrSelector, \"]\"));\n\n      return list ? [].slice.call(list) : [];\n    }\n    /**\n     * Modifies an existing `<meta>` tag element in the current HTML document.\n     * @param tag The tag description with which to replace the existing tag content.\n     * @param selector A tag attribute and value to match against, to identify\n     * an existing tag. A string in the format `\"tag_attribute=`value string`\"`.\n     * If not supplied, matches a tag with the same `name` or `property` attribute value as the\n     * replacement tag.\n     * @return The modified element.\n     */\n\n  }, {\n    key: \"updateTag\",\n    value: function updateTag(tag, selector) {\n      if (!tag) return null;\n      selector = selector || this._parseSelector(tag);\n      var meta = this.getTag(selector);\n\n      if (meta) {\n        return this._setMetaElementAttributes(tag, meta);\n      }\n\n      return this._getOrCreateElement(tag, true);\n    }\n    /**\n     * Removes an existing `<meta>` tag element from the current HTML document.\n     * @param attrSelector A tag attribute and value to match against, to identify\n     * an existing tag. A string in the format `\"tag_attribute=`value string`\"`.\n     */\n\n  }, {\n    key: \"removeTag\",\n    value: function removeTag(attrSelector) {\n      this.removeTagElement(this.getTag(attrSelector));\n    }\n    /**\n     * Removes an existing `<meta>` tag element from the current HTML document.\n     * @param meta The tag definition to match against to identify an existing tag.\n     */\n\n  }, {\n    key: \"removeTagElement\",\n    value: function removeTagElement(meta) {\n      if (meta) {\n        this._dom.remove(meta);\n      }\n    }\n  }, {\n    key: \"_getOrCreateElement\",\n    value: function _getOrCreateElement(meta) {\n      var forceCreation = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n      if (!forceCreation) {\n        var selector = this._parseSelector(meta);\n\n        var elem = this.getTag(selector); // It's allowed to have multiple elements with the same name so it's not enough to\n        // just check that element with the same name already present on the page. We also need to\n        // check if element has tag attributes\n\n        if (elem && this._containsAttributes(meta, elem)) return elem;\n      }\n\n      var element = this._dom.createElement('meta');\n\n      this._setMetaElementAttributes(meta, element);\n\n      var head = this._doc.getElementsByTagName('head')[0];\n\n      head.appendChild(element);\n      return element;\n    }\n  }, {\n    key: \"_setMetaElementAttributes\",\n    value: function _setMetaElementAttributes(tag, el) {\n      Object.keys(tag).forEach(function (prop) {\n        return el.setAttribute(prop, tag[prop]);\n      });\n      return el;\n    }\n  }, {\n    key: \"_parseSelector\",\n    value: function _parseSelector(tag) {\n      var attr = tag.name ? 'name' : 'property';\n      return \"\".concat(attr, \"=\\\"\").concat(tag[attr], \"\\\"\");\n    }\n  }, {\n    key: \"_containsAttributes\",\n    value: function _containsAttributes(tag, elem) {\n      return Object.keys(tag).every(function (key) {\n        return elem.getAttribute(key) === tag[key];\n      });\n    }\n  }]);\n\n  return Meta;\n}();\n\nMeta.ɵprov = ɵɵdefineInjectable({\n  factory: createMeta,\n  token: Meta,\n  providedIn: \"root\"\n});\nMeta.decorators = [{\n  type: Injectable,\n  args: [{\n    providedIn: 'root',\n    useFactory: createMeta,\n    deps: []\n  }]\n}];\n\nMeta.ctorParameters = function () {\n  return [{\n    type: undefined,\n    decorators: [{\n      type: Inject,\n      args: [DOCUMENT]\n    }]\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Factory to create Title service.\n */\n\n\nfunction createTitle() {\n  return new Title(ɵɵinject(DOCUMENT));\n}\n/**\n * A service that can be used to get and set the title of a current HTML document.\n *\n * Since an Angular application can't be bootstrapped on the entire HTML document (`<html>` tag)\n * it is not possible to bind to the `text` property of the `HTMLTitleElement` elements\n * (representing the `<title>` tag). Instead, this service can be used to set and get the current\n * title value.\n *\n * @publicApi\n */\n\n\nvar Title = /*#__PURE__*/function () {\n  function Title(_doc) {\n    _classCallCheck(this, Title);\n\n    this._doc = _doc;\n  }\n  /**\n   * Get the title of the current HTML document.\n   */\n\n\n  _createClass(Title, [{\n    key: \"getTitle\",\n    value: function getTitle() {\n      return this._doc.title;\n    }\n    /**\n     * Set the title of the current HTML document.\n     * @param newTitle\n     */\n\n  }, {\n    key: \"setTitle\",\n    value: function setTitle(newTitle) {\n      this._doc.title = newTitle || '';\n    }\n  }]);\n\n  return Title;\n}();\n\nTitle.ɵprov = ɵɵdefineInjectable({\n  factory: createTitle,\n  token: Title,\n  providedIn: \"root\"\n});\nTitle.decorators = [{\n  type: Injectable,\n  args: [{\n    providedIn: 'root',\n    useFactory: createTitle,\n    deps: []\n  }]\n}];\n\nTitle.ctorParameters = function () {\n  return [{\n    type: undefined,\n    decorators: [{\n      type: Inject,\n      args: [DOCUMENT]\n    }]\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar win = typeof window !== 'undefined' && window || {};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar ChangeDetectionPerfRecord = /*#__PURE__*/_createClass(function ChangeDetectionPerfRecord(msPerTick, numTicks) {\n  _classCallCheck(this, ChangeDetectionPerfRecord);\n\n  this.msPerTick = msPerTick;\n  this.numTicks = numTicks;\n});\n/**\n * Entry point for all Angular profiling-related debug tools. This object\n * corresponds to the `ng.profiler` in the dev console.\n */\n\n\nvar AngularProfiler = /*#__PURE__*/function () {\n  function AngularProfiler(ref) {\n    _classCallCheck(this, AngularProfiler);\n\n    this.appRef = ref.injector.get(ApplicationRef);\n  } // tslint:disable:no-console\n\n  /**\n   * Exercises change detection in a loop and then prints the average amount of\n   * time in milliseconds how long a single round of change detection takes for\n   * the current state of the UI. It runs a minimum of 5 rounds for a minimum\n   * of 500 milliseconds.\n   *\n   * Optionally, a user may pass a `config` parameter containing a map of\n   * options. Supported options are:\n   *\n   * `record` (boolean) - causes the profiler to record a CPU profile while\n   * it exercises the change detector. Example:\n   *\n   * ```\n   * ng.profiler.timeChangeDetection({record: true})\n   * ```\n   */\n\n\n  _createClass(AngularProfiler, [{\n    key: \"timeChangeDetection\",\n    value: function timeChangeDetection(config) {\n      var record = config && config['record'];\n      var profileName = 'Change Detection'; // Profiler is not available in Android browsers without dev tools opened\n\n      var isProfilerAvailable = win.console.profile != null;\n\n      if (record && isProfilerAvailable) {\n        win.console.profile(profileName);\n      }\n\n      var start = ɵgetDOM().performanceNow();\n      var numTicks = 0;\n\n      while (numTicks < 5 || ɵgetDOM().performanceNow() - start < 500) {\n        this.appRef.tick();\n        numTicks++;\n      }\n\n      var end = ɵgetDOM().performanceNow();\n\n      if (record && isProfilerAvailable) {\n        win.console.profileEnd(profileName);\n      }\n\n      var msPerTick = (end - start) / numTicks;\n      win.console.log(\"ran \".concat(numTicks, \" change detection cycles\"));\n      win.console.log(\"\".concat(msPerTick.toFixed(2), \" ms per check\"));\n      return new ChangeDetectionPerfRecord(msPerTick, numTicks);\n    }\n  }]);\n\n  return AngularProfiler;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar PROFILER_GLOBAL_NAME = 'profiler';\n/**\n * Enabled Angular debug tools that are accessible via your browser's\n * developer console.\n *\n * Usage:\n *\n * 1. Open developer console (e.g. in Chrome Ctrl + Shift + j)\n * 1. Type `ng.` (usually the console will show auto-complete suggestion)\n * 1. Try the change detection profiler `ng.profiler.timeChangeDetection()`\n *    then hit Enter.\n *\n * @publicApi\n */\n\nfunction enableDebugTools(ref) {\n  exportNgVar(PROFILER_GLOBAL_NAME, new AngularProfiler(ref));\n  return ref;\n}\n/**\n * Disables Angular tools.\n *\n * @publicApi\n */\n\n\nfunction disableDebugTools() {\n  exportNgVar(PROFILER_GLOBAL_NAME, null);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction escapeHtml(text) {\n  var escapedText = {\n    '&': '&a;',\n    '\"': '&q;',\n    '\\'': '&s;',\n    '<': '&l;',\n    '>': '&g;'\n  };\n  return text.replace(/[&\"'<>]/g, function (s) {\n    return escapedText[s];\n  });\n}\n\nfunction unescapeHtml(text) {\n  var unescapedText = {\n    '&a;': '&',\n    '&q;': '\"',\n    '&s;': '\\'',\n    '&l;': '<',\n    '&g;': '>'\n  };\n  return text.replace(/&[^;]+;/g, function (s) {\n    return unescapedText[s];\n  });\n}\n/**\n * Create a `StateKey<T>` that can be used to store value of type T with `TransferState`.\n *\n * Example:\n *\n * ```\n * const COUNTER_KEY = makeStateKey<number>('counter');\n * let value = 10;\n *\n * transferState.set(COUNTER_KEY, value);\n * ```\n *\n * @publicApi\n */\n\n\nfunction makeStateKey(key) {\n  return key;\n}\n/**\n * A key value store that is transferred from the application on the server side to the application\n * on the client side.\n *\n * `TransferState` will be available as an injectable token. To use it import\n * `ServerTransferStateModule` on the server and `BrowserTransferStateModule` on the client.\n *\n * The values in the store are serialized/deserialized using JSON.stringify/JSON.parse. So only\n * boolean, number, string, null and non-class objects will be serialized and deserialzied in a\n * non-lossy manner.\n *\n * @publicApi\n */\n\n\nvar TransferState = /*#__PURE__*/function () {\n  function TransferState() {\n    _classCallCheck(this, TransferState);\n\n    this.store = {};\n    this.onSerializeCallbacks = {};\n  }\n  /** @internal */\n\n\n  _createClass(TransferState, [{\n    key: \"get\",\n    value:\n    /**\n     * Get the value corresponding to a key. Return `defaultValue` if key is not found.\n     */\n    function get(key, defaultValue) {\n      return this.store[key] !== undefined ? this.store[key] : defaultValue;\n    }\n    /**\n     * Set the value corresponding to a key.\n     */\n\n  }, {\n    key: \"set\",\n    value: function set(key, value) {\n      this.store[key] = value;\n    }\n    /**\n     * Remove a key from the store.\n     */\n\n  }, {\n    key: \"remove\",\n    value: function remove(key) {\n      delete this.store[key];\n    }\n    /**\n     * Test whether a key exists in the store.\n     */\n\n  }, {\n    key: \"hasKey\",\n    value: function hasKey(key) {\n      return this.store.hasOwnProperty(key);\n    }\n    /**\n     * Register a callback to provide the value for a key when `toJson` is called.\n     */\n\n  }, {\n    key: \"onSerialize\",\n    value: function onSerialize(key, callback) {\n      this.onSerializeCallbacks[key] = callback;\n    }\n    /**\n     * Serialize the current state of the store to JSON.\n     */\n\n  }, {\n    key: \"toJson\",\n    value: function toJson() {\n      // Call the onSerialize callbacks and put those values into the store.\n      for (var key in this.onSerializeCallbacks) {\n        if (this.onSerializeCallbacks.hasOwnProperty(key)) {\n          try {\n            this.store[key] = this.onSerializeCallbacks[key]();\n          } catch (e) {\n            console.warn('Exception in onSerialize callback: ', e);\n          }\n        }\n      }\n\n      return JSON.stringify(this.store);\n    }\n  }], [{\n    key: \"init\",\n    value: function init(initState) {\n      var transferState = new TransferState();\n      transferState.store = initState;\n      return transferState;\n    }\n  }]);\n\n  return TransferState;\n}();\n\nTransferState.decorators = [{\n  type: Injectable\n}];\n\nfunction initTransferState(doc, appId) {\n  // Locate the script tag with the JSON data transferred from the server.\n  // The id of the script tag is set to the Angular appId + 'state'.\n  var script = doc.getElementById(appId + '-state');\n  var initialState = {};\n\n  if (script && script.textContent) {\n    try {\n      initialState = JSON.parse(unescapeHtml(script.textContent));\n    } catch (e) {\n      console.warn('Exception while restoring TransferState for app ' + appId, e);\n    }\n  }\n\n  return TransferState.init(initialState);\n}\n/**\n * NgModule to install on the client side while using the `TransferState` to transfer state from\n * server to client.\n *\n * @publicApi\n */\n\n\nvar BrowserTransferStateModule = /*#__PURE__*/_createClass(function BrowserTransferStateModule() {\n  _classCallCheck(this, BrowserTransferStateModule);\n});\n\nBrowserTransferStateModule.decorators = [{\n  type: NgModule,\n  args: [{\n    providers: [{\n      provide: TransferState,\n      useFactory: initTransferState,\n      deps: [DOCUMENT, APP_ID]\n    }]\n  }]\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Predicates for use with {@link DebugElement}'s query functions.\n *\n * @publicApi\n */\n\nvar By = /*#__PURE__*/function () {\n  function By() {\n    _classCallCheck(this, By);\n  }\n\n  _createClass(By, null, [{\n    key: \"all\",\n    value:\n    /**\n     * Match all nodes.\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * {@example platform-browser/dom/debug/ts/by/by.ts region='by_all'}\n     */\n    function all() {\n      return function () {\n        return true;\n      };\n    }\n    /**\n     * Match elements by the given CSS selector.\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * {@example platform-browser/dom/debug/ts/by/by.ts region='by_css'}\n     */\n\n  }, {\n    key: \"css\",\n    value: function css(selector) {\n      return function (debugElement) {\n        return debugElement.nativeElement != null ? elementMatches(debugElement.nativeElement, selector) : false;\n      };\n    }\n    /**\n     * Match nodes that have the given directive present.\n     *\n     * @usageNotes\n     * ### Example\n     *\n     * {@example platform-browser/dom/debug/ts/by/by.ts region='by_directive'}\n     */\n\n  }, {\n    key: \"directive\",\n    value: function directive(type) {\n      return function (debugNode) {\n        return debugNode.providerTokens.indexOf(type) !== -1;\n      };\n    }\n  }]);\n\n  return By;\n}();\n\nfunction elementMatches(n, selector) {\n  if (ɵgetDOM().isElementNode(n)) {\n    return n.matches && n.matches(selector) || n.msMatchesSelector && n.msMatchesSelector(selector) || n.webkitMatchesSelector && n.webkitMatchesSelector(selector);\n  }\n\n  return false;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @publicApi\n */\n\n\nvar VERSION = new Version('11.0.2');\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// This file only reexports content of the `src` folder. Keep it that way.\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { BrowserModule, BrowserTransferStateModule, By, DomSanitizer, EVENT_MANAGER_PLUGINS, EventManager, HAMMER_GESTURE_CONFIG, HAMMER_LOADER, HammerGestureConfig, HammerModule, Meta, Title, TransferState, VERSION, disableDebugTools, enableDebugTools, makeStateKey, platformBrowser, BROWSER_SANITIZATION_PROVIDERS as ɵBROWSER_SANITIZATION_PROVIDERS, BROWSER_SANITIZATION_PROVIDERS__POST_R3__ as ɵBROWSER_SANITIZATION_PROVIDERS__POST_R3__, BrowserDomAdapter as ɵBrowserDomAdapter, BrowserGetTestability as ɵBrowserGetTestability, DomEventsPlugin as ɵDomEventsPlugin, DomRendererFactory2 as ɵDomRendererFactory2, DomSanitizerImpl as ɵDomSanitizerImpl, DomSharedStylesHost as ɵDomSharedStylesHost, ELEMENT_PROBE_PROVIDERS as ɵELEMENT_PROBE_PROVIDERS, ELEMENT_PROBE_PROVIDERS__POST_R3__ as ɵELEMENT_PROBE_PROVIDERS__POST_R3__, HAMMER_PROVIDERS__POST_R3__ as ɵHAMMER_PROVIDERS__POST_R3__, HammerGesturesPlugin as ɵHammerGesturesPlugin, INTERNAL_BROWSER_PLATFORM_PROVIDERS as ɵINTERNAL_BROWSER_PLATFORM_PROVIDERS, KeyEventsPlugin as ɵKeyEventsPlugin, NAMESPACE_URIS as ɵNAMESPACE_URIS, SharedStylesHost as ɵSharedStylesHost, TRANSITION_ID as ɵTRANSITION_ID, errorHandler as ɵangular_packages_platform_browser_platform_browser_a, _document as ɵangular_packages_platform_browser_platform_browser_b, BROWSER_MODULE_PROVIDERS as ɵangular_packages_platform_browser_platform_browser_c, createMeta as ɵangular_packages_platform_browser_platform_browser_d, createTitle as ɵangular_packages_platform_browser_platform_browser_e, initTransferState as ɵangular_packages_platform_browser_platform_browser_f, EventManagerPlugin as ɵangular_packages_platform_browser_platform_browser_g, HAMMER_PROVIDERS__PRE_R3__ as ɵangular_packages_platform_browser_platform_browser_h, HAMMER_PROVIDERS as ɵangular_packages_platform_browser_platform_browser_i, domSanitizerImplFactory as ɵangular_packages_platform_browser_platform_browser_j, appInitializerFactory as ɵangular_packages_platform_browser_platform_browser_k, SERVER_TRANSITION_PROVIDERS as ɵangular_packages_platform_browser_platform_browser_l, _createNgProbeR2 as ɵangular_packages_platform_browser_platform_browser_m, ELEMENT_PROBE_PROVIDERS__PRE_R3__ as ɵangular_packages_platform_browser_platform_browser_n, GenericBrowserDomAdapter as ɵangular_packages_platform_browser_platform_browser_o, escapeHtml as ɵescapeHtml, flattenStyles as ɵflattenStyles, initDomAdapter as ɵinitDomAdapter, shimContentAttribute as ɵshimContentAttribute, shimHostAttribute as ɵshimHostAttribute };","/** PURE_IMPORTS_START tslib,_Subscriber,_Observable,_util_subscribeTo PURE_IMPORTS_END */\nimport * as tslib_1 from \"tslib\";\nimport { Subscriber } from './Subscriber';\nimport { Observable } from './Observable';\nimport { subscribeTo } from './util/subscribeTo';\n\nvar SimpleInnerSubscriber = /*@__PURE__*/function (_super) {\n  tslib_1.__extends(SimpleInnerSubscriber, _super);\n\n  function SimpleInnerSubscriber(parent) {\n    var _this = _super.call(this) || this;\n\n    _this.parent = parent;\n    return _this;\n  }\n\n  SimpleInnerSubscriber.prototype._next = function (value) {\n    this.parent.notifyNext(value);\n  };\n\n  SimpleInnerSubscriber.prototype._error = function (error) {\n    this.parent.notifyError(error);\n    this.unsubscribe();\n  };\n\n  SimpleInnerSubscriber.prototype._complete = function () {\n    this.parent.notifyComplete();\n    this.unsubscribe();\n  };\n\n  return SimpleInnerSubscriber;\n}(Subscriber);\n\nexport { SimpleInnerSubscriber };\n\nvar ComplexInnerSubscriber = /*@__PURE__*/function (_super) {\n  tslib_1.__extends(ComplexInnerSubscriber, _super);\n\n  function ComplexInnerSubscriber(parent, outerValue, outerIndex) {\n    var _this = _super.call(this) || this;\n\n    _this.parent = parent;\n    _this.outerValue = outerValue;\n    _this.outerIndex = outerIndex;\n    return _this;\n  }\n\n  ComplexInnerSubscriber.prototype._next = function (value) {\n    this.parent.notifyNext(this.outerValue, value, this.outerIndex, this);\n  };\n\n  ComplexInnerSubscriber.prototype._error = function (error) {\n    this.parent.notifyError(error);\n    this.unsubscribe();\n  };\n\n  ComplexInnerSubscriber.prototype._complete = function () {\n    this.parent.notifyComplete(this);\n    this.unsubscribe();\n  };\n\n  return ComplexInnerSubscriber;\n}(Subscriber);\n\nexport { ComplexInnerSubscriber };\n\nvar SimpleOuterSubscriber = /*@__PURE__*/function (_super) {\n  tslib_1.__extends(SimpleOuterSubscriber, _super);\n\n  function SimpleOuterSubscriber() {\n    return _super !== null && _super.apply(this, arguments) || this;\n  }\n\n  SimpleOuterSubscriber.prototype.notifyNext = function (innerValue) {\n    this.destination.next(innerValue);\n  };\n\n  SimpleOuterSubscriber.prototype.notifyError = function (err) {\n    this.destination.error(err);\n  };\n\n  SimpleOuterSubscriber.prototype.notifyComplete = function () {\n    this.destination.complete();\n  };\n\n  return SimpleOuterSubscriber;\n}(Subscriber);\n\nexport { SimpleOuterSubscriber };\n\nvar ComplexOuterSubscriber = /*@__PURE__*/function (_super) {\n  tslib_1.__extends(ComplexOuterSubscriber, _super);\n\n  function ComplexOuterSubscriber() {\n    return _super !== null && _super.apply(this, arguments) || this;\n  }\n\n  ComplexOuterSubscriber.prototype.notifyNext = function (_outerValue, innerValue, _outerIndex, _innerSub) {\n    this.destination.next(innerValue);\n  };\n\n  ComplexOuterSubscriber.prototype.notifyError = function (error) {\n    this.destination.error(error);\n  };\n\n  ComplexOuterSubscriber.prototype.notifyComplete = function (_innerSub) {\n    this.destination.complete();\n  };\n\n  return ComplexOuterSubscriber;\n}(Subscriber);\n\nexport { ComplexOuterSubscriber };\nexport function innerSubscribe(result, innerSubscriber) {\n  if (innerSubscriber.closed) {\n    return undefined;\n  }\n\n  if (result instanceof Observable) {\n    return result.subscribe(innerSubscriber);\n  }\n\n  return subscribeTo(result)(innerSubscriber);\n}","/** PURE_IMPORTS_START  PURE_IMPORTS_END */\nexport function isFunction(x) {\n  return typeof x === 'function';\n}","/** PURE_IMPORTS_START tslib,_Subscription PURE_IMPORTS_END */\nimport * as tslib_1 from \"tslib\";\nimport { Subscription } from './Subscription';\n\nvar SubjectSubscription = /*@__PURE__*/function (_super) {\n  tslib_1.__extends(SubjectSubscription, _super);\n\n  function SubjectSubscription(subject, subscriber) {\n    var _this = _super.call(this) || this;\n\n    _this.subject = subject;\n    _this.subscriber = subscriber;\n    _this.closed = false;\n    return _this;\n  }\n\n  SubjectSubscription.prototype.unsubscribe = function () {\n    if (this.closed) {\n      return;\n    }\n\n    this.closed = true;\n    var subject = this.subject;\n    var observers = subject.observers;\n    this.subject = null;\n\n    if (!observers || observers.length === 0 || subject.isStopped || subject.closed) {\n      return;\n    }\n\n    var subscriberIndex = observers.indexOf(this.subscriber);\n\n    if (subscriberIndex !== -1) {\n      observers.splice(subscriberIndex, 1);\n    }\n  };\n\n  return SubjectSubscription;\n}(Subscription);\n\nexport { SubjectSubscription };","/** PURE_IMPORTS_START tslib,_Observable,_Subscriber,_Subscription,_util_ObjectUnsubscribedError,_SubjectSubscription,_internal_symbol_rxSubscriber PURE_IMPORTS_END */\nimport * as tslib_1 from \"tslib\";\nimport { Observable } from './Observable';\nimport { Subscriber } from './Subscriber';\nimport { Subscription } from './Subscription';\nimport { ObjectUnsubscribedError } from './util/ObjectUnsubscribedError';\nimport { SubjectSubscription } from './SubjectSubscription';\nimport { rxSubscriber as rxSubscriberSymbol } from '../internal/symbol/rxSubscriber';\n\nvar SubjectSubscriber = /*@__PURE__*/function (_super) {\n  tslib_1.__extends(SubjectSubscriber, _super);\n\n  function SubjectSubscriber(destination) {\n    var _this = _super.call(this, destination) || this;\n\n    _this.destination = destination;\n    return _this;\n  }\n\n  return SubjectSubscriber;\n}(Subscriber);\n\nexport { SubjectSubscriber };\n\nvar Subject = /*@__PURE__*/function (_super) {\n  tslib_1.__extends(Subject, _super);\n\n  function Subject() {\n    var _this = _super.call(this) || this;\n\n    _this.observers = [];\n    _this.closed = false;\n    _this.isStopped = false;\n    _this.hasError = false;\n    _this.thrownError = null;\n    return _this;\n  }\n\n  Subject.prototype[rxSubscriberSymbol] = function () {\n    return new SubjectSubscriber(this);\n  };\n\n  Subject.prototype.lift = function (operator) {\n    var subject = new AnonymousSubject(this, this);\n    subject.operator = operator;\n    return subject;\n  };\n\n  Subject.prototype.next = function (value) {\n    if (this.closed) {\n      throw new ObjectUnsubscribedError();\n    }\n\n    if (!this.isStopped) {\n      var observers = this.observers;\n      var len = observers.length;\n      var copy = observers.slice();\n\n      for (var i = 0; i < len; i++) {\n        copy[i].next(value);\n      }\n    }\n  };\n\n  Subject.prototype.error = function (err) {\n    if (this.closed) {\n      throw new ObjectUnsubscribedError();\n    }\n\n    this.hasError = true;\n    this.thrownError = err;\n    this.isStopped = true;\n    var observers = this.observers;\n    var len = observers.length;\n    var copy = observers.slice();\n\n    for (var i = 0; i < len; i++) {\n      copy[i].error(err);\n    }\n\n    this.observers.length = 0;\n  };\n\n  Subject.prototype.complete = function () {\n    if (this.closed) {\n      throw new ObjectUnsubscribedError();\n    }\n\n    this.isStopped = true;\n    var observers = this.observers;\n    var len = observers.length;\n    var copy = observers.slice();\n\n    for (var i = 0; i < len; i++) {\n      copy[i].complete();\n    }\n\n    this.observers.length = 0;\n  };\n\n  Subject.prototype.unsubscribe = function () {\n    this.isStopped = true;\n    this.closed = true;\n    this.observers = null;\n  };\n\n  Subject.prototype._trySubscribe = function (subscriber) {\n    if (this.closed) {\n      throw new ObjectUnsubscribedError();\n    } else {\n      return _super.prototype._trySubscribe.call(this, subscriber);\n    }\n  };\n\n  Subject.prototype._subscribe = function (subscriber) {\n    if (this.closed) {\n      throw new ObjectUnsubscribedError();\n    } else if (this.hasError) {\n      subscriber.error(this.thrownError);\n      return Subscription.EMPTY;\n    } else if (this.isStopped) {\n      subscriber.complete();\n      return Subscription.EMPTY;\n    } else {\n      this.observers.push(subscriber);\n      return new SubjectSubscription(this, subscriber);\n    }\n  };\n\n  Subject.prototype.asObservable = function () {\n    var observable = new Observable();\n    observable.source = this;\n    return observable;\n  };\n\n  Subject.create = function (destination, source) {\n    return new AnonymousSubject(destination, source);\n  };\n\n  return Subject;\n}(Observable);\n\nexport { Subject };\n\nvar AnonymousSubject = /*@__PURE__*/function (_super) {\n  tslib_1.__extends(AnonymousSubject, _super);\n\n  function AnonymousSubject(destination, source) {\n    var _this = _super.call(this) || this;\n\n    _this.destination = destination;\n    _this.source = source;\n    return _this;\n  }\n\n  AnonymousSubject.prototype.next = function (value) {\n    var destination = this.destination;\n\n    if (destination && destination.next) {\n      destination.next(value);\n    }\n  };\n\n  AnonymousSubject.prototype.error = function (err) {\n    var destination = this.destination;\n\n    if (destination && destination.error) {\n      this.destination.error(err);\n    }\n  };\n\n  AnonymousSubject.prototype.complete = function () {\n    var destination = this.destination;\n\n    if (destination && destination.complete) {\n      this.destination.complete();\n    }\n  };\n\n  AnonymousSubject.prototype._subscribe = function (subscriber) {\n    var source = this.source;\n\n    if (source) {\n      return this.source.subscribe(subscriber);\n    } else {\n      return Subscription.EMPTY;\n    }\n  };\n\n  return AnonymousSubject;\n}(Subject);\n\nexport { AnonymousSubject };","/** PURE_IMPORTS_START _Observable,_util_isArray,_operators_map,_util_isObject,_from PURE_IMPORTS_END */\nimport { Observable } from '../Observable';\nimport { isArray } from '../util/isArray';\nimport { map } from '../operators/map';\nimport { isObject } from '../util/isObject';\nimport { from } from './from';\nexport function forkJoin() {\n  var sources = [];\n\n  for (var _i = 0; _i < arguments.length; _i++) {\n    sources[_i] = arguments[_i];\n  }\n\n  if (sources.length === 1) {\n    var first_1 = sources[0];\n\n    if (isArray(first_1)) {\n      return forkJoinInternal(first_1, null);\n    }\n\n    if (isObject(first_1) && Object.getPrototypeOf(first_1) === Object.prototype) {\n      var keys = Object.keys(first_1);\n      return forkJoinInternal(keys.map(function (key) {\n        return first_1[key];\n      }), keys);\n    }\n  }\n\n  if (typeof sources[sources.length - 1] === 'function') {\n    var resultSelector_1 = sources.pop();\n    sources = sources.length === 1 && isArray(sources[0]) ? sources[0] : sources;\n    return forkJoinInternal(sources, null).pipe(map(function (args) {\n      return resultSelector_1.apply(void 0, args);\n    }));\n  }\n\n  return forkJoinInternal(sources, null);\n}\n\nfunction forkJoinInternal(sources, keys) {\n  return new Observable(function (subscriber) {\n    var len = sources.length;\n\n    if (len === 0) {\n      subscriber.complete();\n      return;\n    }\n\n    var values = new Array(len);\n    var completed = 0;\n    var emitted = 0;\n\n    var _loop_1 = function _loop_1(i) {\n      var source = from(sources[i]);\n      var hasValue = false;\n      subscriber.add(source.subscribe({\n        next: function next(value) {\n          if (!hasValue) {\n            hasValue = true;\n            emitted++;\n          }\n\n          values[i] = value;\n        },\n        error: function error(err) {\n          return subscriber.error(err);\n        },\n        complete: function complete() {\n          completed++;\n\n          if (completed === len || !hasValue) {\n            if (emitted === len) {\n              subscriber.next(keys ? keys.reduce(function (result, key, i) {\n                return result[key] = values[i], result;\n              }, {}) : values);\n            }\n\n            subscriber.complete();\n          }\n        }\n      }));\n    };\n\n    for (var i = 0; i < len; i++) {\n      _loop_1(i);\n    }\n  });\n}","function _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== \"undefined\" && o[Symbol.iterator] || o[\"@@iterator\"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === \"number\") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError(\"Invalid attempt to iterate non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\"); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it.return != null) it.return(); } finally { if (didErr) throw err; } } }; }\n\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; return _typeof = \"function\" == typeof Symbol && \"symbol\" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && \"function\" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }, _typeof(obj); }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function\"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); Object.defineProperty(subClass, \"prototype\", { writable: false }); if (superClass) _setPrototypeOf(subClass, superClass); }\n\nfunction _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }\n\nfunction _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }\n\nfunction _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === \"object\" || typeof call === \"function\")) { return call; } else if (call !== void 0) { throw new TypeError(\"Derived constructors may only return object or undefined\"); } return _assertThisInitialized(self); }\n\nfunction _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return self; }\n\nfunction _isNativeReflectConstruct() { if (typeof Reflect === \"undefined\" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === \"function\") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }\n\nfunction _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }\n\nfunction _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }\n\nfunction _nonIterableSpread() { throw new TypeError(\"Invalid attempt to spread non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\"); }\n\nfunction _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === \"string\") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === \"Object\" && o.constructor) n = o.constructor.name; if (n === \"Map\" || n === \"Set\") return Array.from(o); if (n === \"Arguments\" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }\n\nfunction _iterableToArray(iter) { if (typeof Symbol !== \"undefined\" && iter[Symbol.iterator] != null || iter[\"@@iterator\"] != null) return Array.from(iter); }\n\nfunction _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }\n\nfunction _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, \"prototype\", { writable: false }); return Constructor; }\n\n/**\n * @license Angular v11.0.3\n * (c) 2010-2020 Google LLC. https://angular.io/\n * License: MIT\n */\nimport { InjectionToken, forwardRef, Directive, Renderer2, ElementRef, Optional, Inject, ɵisPromise, ɵisObservable, Self, Injectable, Injector, Input, Host, isDevMode, EventEmitter, SkipSelf, Output, NgModule, Version } from '@angular/core';\nimport { ɵgetDOM } from '@angular/common';\nimport { forkJoin, from } from 'rxjs';\nimport { map } from 'rxjs/operators';\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Used to provide a `ControlValueAccessor` for form controls.\n *\n * See `DefaultValueAccessor` for how to implement one.\n *\n * @publicApi\n */\n\nvar NG_VALUE_ACCESSOR = new InjectionToken('NgValueAccessor');\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar CHECKBOX_VALUE_ACCESSOR = {\n  provide: NG_VALUE_ACCESSOR,\n  useExisting: forwardRef(function () {\n    return CheckboxControlValueAccessor;\n  }),\n  multi: true\n};\n/**\n * @description\n * A `ControlValueAccessor` for writing a value and listening to changes on a checkbox input\n * element.\n *\n * @usageNotes\n *\n * ### Using a checkbox with a reactive form.\n *\n * The following example shows how to use a checkbox with a reactive form.\n *\n * ```ts\n * const rememberLoginControl = new FormControl();\n * ```\n *\n * ```\n * <input type=\"checkbox\" [formControl]=\"rememberLoginControl\">\n * ```\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\n\nvar CheckboxControlValueAccessor = /*#__PURE__*/function () {\n  function CheckboxControlValueAccessor(_renderer, _elementRef) {\n    _classCallCheck(this, CheckboxControlValueAccessor);\n\n    this._renderer = _renderer;\n    this._elementRef = _elementRef;\n    /**\n     * The registered callback function called when a change event occurs on the input element.\n     * @nodoc\n     */\n\n    this.onChange = function (_) {};\n    /**\n     * The registered callback function called when a blur event occurs on the input element.\n     * @nodoc\n     */\n\n\n    this.onTouched = function () {};\n  }\n  /**\n   * Sets the \"checked\" property on the input element.\n   * @nodoc\n   */\n\n\n  _createClass(CheckboxControlValueAccessor, [{\n    key: \"writeValue\",\n    value: function writeValue(value) {\n      this._renderer.setProperty(this._elementRef.nativeElement, 'checked', value);\n    }\n    /**\n     * Registers a function called when the control value changes.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnChange\",\n    value: function registerOnChange(fn) {\n      this.onChange = fn;\n    }\n    /**\n     * Registers a function called when the control is touched.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnTouched\",\n    value: function registerOnTouched(fn) {\n      this.onTouched = fn;\n    }\n    /**\n     * Sets the \"disabled\" property on the input element.\n     * @nodoc\n     */\n\n  }, {\n    key: \"setDisabledState\",\n    value: function setDisabledState(isDisabled) {\n      this._renderer.setProperty(this._elementRef.nativeElement, 'disabled', isDisabled);\n    }\n  }]);\n\n  return CheckboxControlValueAccessor;\n}();\n\nCheckboxControlValueAccessor.decorators = [{\n  type: Directive,\n  args: [{\n    selector: 'input[type=checkbox][formControlName],input[type=checkbox][formControl],input[type=checkbox][ngModel]',\n    host: {\n      '(change)': 'onChange($event.target.checked)',\n      '(blur)': 'onTouched()'\n    },\n    providers: [CHECKBOX_VALUE_ACCESSOR]\n  }]\n}];\n\nCheckboxControlValueAccessor.ctorParameters = function () {\n  return [{\n    type: Renderer2\n  }, {\n    type: ElementRef\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar DEFAULT_VALUE_ACCESSOR = {\n  provide: NG_VALUE_ACCESSOR,\n  useExisting: forwardRef(function () {\n    return DefaultValueAccessor;\n  }),\n  multi: true\n};\n/**\n * We must check whether the agent is Android because composition events\n * behave differently between iOS and Android.\n */\n\nfunction _isAndroid() {\n  var userAgent = ɵgetDOM() ? ɵgetDOM().getUserAgent() : '';\n  return /android (\\d+)/.test(userAgent.toLowerCase());\n}\n/**\n * @description\n * Provide this token to control if form directives buffer IME input until\n * the \"compositionend\" event occurs.\n * @publicApi\n */\n\n\nvar COMPOSITION_BUFFER_MODE = new InjectionToken('CompositionEventMode');\n/**\n * @description\n *\n * {@searchKeywords ngDefaultControl}\n *\n * The default `ControlValueAccessor` for writing a value and listening to changes on input\n * elements. The accessor is used by the `FormControlDirective`, `FormControlName`, and\n * `NgModel` directives.\n *\n * @usageNotes\n *\n * ### Using the default value accessor\n *\n * The following example shows how to use an input element that activates the default value accessor\n * (in this case, a text field).\n *\n * ```ts\n * const firstNameControl = new FormControl();\n * ```\n *\n * ```\n * <input type=\"text\" [formControl]=\"firstNameControl\">\n * ```\n *\n * This value accessor is used by default for `<input type=\"text\">` and `<textarea>` elements, but\n * you could also use it for custom components that have similar behavior and do not require special\n * processing. In order to attach the default value accessor to a custom element, add the\n * `ngDefaultControl` attribute as shown below.\n *\n * ```\n * <custom-input-component ngDefaultControl [(ngModel)]=\"value\"></custom-input-component>\n * ```\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\n\nvar DefaultValueAccessor = /*#__PURE__*/function () {\n  function DefaultValueAccessor(_renderer, _elementRef, _compositionMode) {\n    _classCallCheck(this, DefaultValueAccessor);\n\n    this._renderer = _renderer;\n    this._elementRef = _elementRef;\n    this._compositionMode = _compositionMode;\n    /**\n     * The registered callback function called when an input event occurs on the input element.\n     * @nodoc\n     */\n\n    this.onChange = function (_) {};\n    /**\n     * The registered callback function called when a blur event occurs on the input element.\n     * @nodoc\n     */\n\n\n    this.onTouched = function () {};\n    /** Whether the user is creating a composition string (IME events). */\n\n\n    this._composing = false;\n\n    if (this._compositionMode == null) {\n      this._compositionMode = !_isAndroid();\n    }\n  }\n  /**\n   * Sets the \"value\" property on the input element.\n   * @nodoc\n   */\n\n\n  _createClass(DefaultValueAccessor, [{\n    key: \"writeValue\",\n    value: function writeValue(value) {\n      var normalizedValue = value == null ? '' : value;\n\n      this._renderer.setProperty(this._elementRef.nativeElement, 'value', normalizedValue);\n    }\n    /**\n     * Registers a function called when the control value changes.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnChange\",\n    value: function registerOnChange(fn) {\n      this.onChange = fn;\n    }\n    /**\n     * Registers a function called when the control is touched.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnTouched\",\n    value: function registerOnTouched(fn) {\n      this.onTouched = fn;\n    }\n    /**\n     * Sets the \"disabled\" property on the input element.\n     * @nodoc\n     */\n\n  }, {\n    key: \"setDisabledState\",\n    value: function setDisabledState(isDisabled) {\n      this._renderer.setProperty(this._elementRef.nativeElement, 'disabled', isDisabled);\n    }\n    /** @internal */\n\n  }, {\n    key: \"_handleInput\",\n    value: function _handleInput(value) {\n      if (!this._compositionMode || this._compositionMode && !this._composing) {\n        this.onChange(value);\n      }\n    }\n    /** @internal */\n\n  }, {\n    key: \"_compositionStart\",\n    value: function _compositionStart() {\n      this._composing = true;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_compositionEnd\",\n    value: function _compositionEnd(value) {\n      this._composing = false;\n      this._compositionMode && this.onChange(value);\n    }\n  }]);\n\n  return DefaultValueAccessor;\n}();\n\nDefaultValueAccessor.decorators = [{\n  type: Directive,\n  args: [{\n    selector: 'input:not([type=checkbox])[formControlName],textarea[formControlName],input:not([type=checkbox])[formControl],textarea[formControl],input:not([type=checkbox])[ngModel],textarea[ngModel],[ngDefaultControl]',\n    // TODO: vsavkin replace the above selector with the one below it once\n    // https://github.com/angular/angular/issues/3011 is implemented\n    // selector: '[ngModel],[formControl],[formControlName]',\n    host: {\n      '(input)': '$any(this)._handleInput($event.target.value)',\n      '(blur)': 'onTouched()',\n      '(compositionstart)': '$any(this)._compositionStart()',\n      '(compositionend)': '$any(this)._compositionEnd($event.target.value)'\n    },\n    providers: [DEFAULT_VALUE_ACCESSOR]\n  }]\n}];\n\nDefaultValueAccessor.ctorParameters = function () {\n  return [{\n    type: Renderer2\n  }, {\n    type: ElementRef\n  }, {\n    type: Boolean,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Inject,\n      args: [COMPOSITION_BUFFER_MODE]\n    }]\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nfunction isEmptyInputValue(value) {\n  // we don't check for string here so it also works with arrays\n  return value == null || value.length === 0;\n}\n\nfunction hasValidLength(value) {\n  // non-strict comparison is intentional, to check for both `null` and `undefined` values\n  return value != null && typeof value.length === 'number';\n}\n/**\n * @description\n * An `InjectionToken` for registering additional synchronous validators used with\n * `AbstractControl`s.\n *\n * @see `NG_ASYNC_VALIDATORS`\n *\n * @usageNotes\n *\n * ### Providing a custom validator\n *\n * The following example registers a custom validator directive. Adding the validator to the\n * existing collection of validators requires the `multi: true` option.\n *\n * ```typescript\n * @Directive({\n *   selector: '[customValidator]',\n *   providers: [{provide: NG_VALIDATORS, useExisting: CustomValidatorDirective, multi: true}]\n * })\n * class CustomValidatorDirective implements Validator {\n *   validate(control: AbstractControl): ValidationErrors | null {\n *     return { 'custom': true };\n *   }\n * }\n * ```\n *\n * @publicApi\n */\n\n\nvar NG_VALIDATORS = new InjectionToken('NgValidators');\n/**\n * @description\n * An `InjectionToken` for registering additional asynchronous validators used with\n * `AbstractControl`s.\n *\n * @see `NG_VALIDATORS`\n *\n * @publicApi\n */\n\nvar NG_ASYNC_VALIDATORS = new InjectionToken('NgAsyncValidators');\n/**\n * A regular expression that matches valid e-mail addresses.\n *\n * At a high level, this regexp matches e-mail addresses of the format `local-part@tld`, where:\n * - `local-part` consists of one or more of the allowed characters (alphanumeric and some\n *   punctuation symbols).\n * - `local-part` cannot begin or end with a period (`.`).\n * - `local-part` cannot be longer than 64 characters.\n * - `tld` consists of one or more `labels` separated by periods (`.`). For example `localhost` or\n *   `foo.com`.\n * - A `label` consists of one or more of the allowed characters (alphanumeric, dashes (`-`) and\n *   periods (`.`)).\n * - A `label` cannot begin or end with a dash (`-`) or a period (`.`).\n * - A `label` cannot be longer than 63 characters.\n * - The whole address cannot be longer than 254 characters.\n *\n * ## Implementation background\n *\n * This regexp was ported over from AngularJS (see there for git history):\n * https://github.com/angular/angular.js/blob/c133ef836/src/ng/directive/input.js#L27\n * It is based on the\n * [WHATWG version](https://html.spec.whatwg.org/multipage/input.html#valid-e-mail-address) with\n * some enhancements to incorporate more RFC rules (such as rules related to domain names and the\n * lengths of different parts of the address). The main differences from the WHATWG version are:\n *   - Disallow `local-part` to begin or end with a period (`.`).\n *   - Disallow `local-part` length to exceed 64 characters.\n *   - Disallow total address length to exceed 254 characters.\n *\n * See [this commit](https://github.com/angular/angular.js/commit/f3f5cf72e) for more details.\n */\n\nvar EMAIL_REGEXP = /^(?=.{1,254}$)(?=.{1,64}@)[a-zA-Z0-9!#$%&'*+/=?^_`{|}~-]+(?:\\.[a-zA-Z0-9!#$%&'*+/=?^_`{|}~-]+)*@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/;\n/**\n * @description\n * Provides a set of built-in validators that can be used by form controls.\n *\n * A validator is a function that processes a `FormControl` or collection of\n * controls and returns an error map or null. A null map means that validation has passed.\n *\n * @see [Form Validation](/guide/form-validation)\n *\n * @publicApi\n */\n\nvar Validators = /*#__PURE__*/function () {\n  function Validators() {\n    _classCallCheck(this, Validators);\n  }\n\n  _createClass(Validators, null, [{\n    key: \"min\",\n    value:\n    /**\n     * @description\n     * Validator that requires the control's value to be greater than or equal to the provided number.\n     * The validator exists only as a function and not as a directive.\n     *\n     * @usageNotes\n     *\n     * ### Validate against a minimum of 3\n     *\n     * ```typescript\n     * const control = new FormControl(2, Validators.min(3));\n     *\n     * console.log(control.errors); // {min: {min: 3, actual: 2}}\n     * ```\n     *\n     * @returns A validator function that returns an error map with the\n     * `min` property if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n    function min(_min) {\n      return function (control) {\n        if (isEmptyInputValue(control.value) || isEmptyInputValue(_min)) {\n          return null; // don't validate empty values to allow optional controls\n        }\n\n        var value = parseFloat(control.value); // Controls with NaN values after parsing should be treated as not having a\n        // minimum, per the HTML forms spec: https://www.w3.org/TR/html5/forms.html#attr-input-min\n\n        return !isNaN(value) && value < _min ? {\n          'min': {\n            'min': _min,\n            'actual': control.value\n          }\n        } : null;\n      };\n    }\n    /**\n     * @description\n     * Validator that requires the control's value to be less than or equal to the provided number.\n     * The validator exists only as a function and not as a directive.\n     *\n     * @usageNotes\n     *\n     * ### Validate against a maximum of 15\n     *\n     * ```typescript\n     * const control = new FormControl(16, Validators.max(15));\n     *\n     * console.log(control.errors); // {max: {max: 15, actual: 16}}\n     * ```\n     *\n     * @returns A validator function that returns an error map with the\n     * `max` property if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n\n  }, {\n    key: \"max\",\n    value: function max(_max) {\n      return function (control) {\n        if (isEmptyInputValue(control.value) || isEmptyInputValue(_max)) {\n          return null; // don't validate empty values to allow optional controls\n        }\n\n        var value = parseFloat(control.value); // Controls with NaN values after parsing should be treated as not having a\n        // maximum, per the HTML forms spec: https://www.w3.org/TR/html5/forms.html#attr-input-max\n\n        return !isNaN(value) && value > _max ? {\n          'max': {\n            'max': _max,\n            'actual': control.value\n          }\n        } : null;\n      };\n    }\n    /**\n     * @description\n     * Validator that requires the control have a non-empty value.\n     *\n     * @usageNotes\n     *\n     * ### Validate that the field is non-empty\n     *\n     * ```typescript\n     * const control = new FormControl('', Validators.required);\n     *\n     * console.log(control.errors); // {required: true}\n     * ```\n     *\n     * @returns An error map with the `required` property\n     * if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n\n  }, {\n    key: \"required\",\n    value: function required(control) {\n      return isEmptyInputValue(control.value) ? {\n        'required': true\n      } : null;\n    }\n    /**\n     * @description\n     * Validator that requires the control's value be true. This validator is commonly\n     * used for required checkboxes.\n     *\n     * @usageNotes\n     *\n     * ### Validate that the field value is true\n     *\n     * ```typescript\n     * const control = new FormControl('', Validators.requiredTrue);\n     *\n     * console.log(control.errors); // {required: true}\n     * ```\n     *\n     * @returns An error map that contains the `required` property\n     * set to `true` if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n\n  }, {\n    key: \"requiredTrue\",\n    value: function requiredTrue(control) {\n      return control.value === true ? null : {\n        'required': true\n      };\n    }\n    /**\n     * @description\n     * Validator that requires the control's value pass an email validation test.\n     *\n     * Tests the value using a [regular\n     * expression](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions)\n     * pattern suitable for common usecases. The pattern is based on the definition of a valid email\n     * address in the [WHATWG HTML\n     * specification](https://html.spec.whatwg.org/multipage/input.html#valid-e-mail-address) with\n     * some enhancements to incorporate more RFC rules (such as rules related to domain names and the\n     * lengths of different parts of the address).\n     *\n     * The differences from the WHATWG version include:\n     * - Disallow `local-part` (the part before the `@` symbol) to begin or end with a period (`.`).\n     * - Disallow `local-part` to be longer than 64 characters.\n     * - Disallow the whole address to be longer than 254 characters.\n     *\n     * If this pattern does not satisfy your business needs, you can use `Validators.pattern()` to\n     * validate the value against a different pattern.\n     *\n     * @usageNotes\n     *\n     * ### Validate that the field matches a valid email pattern\n     *\n     * ```typescript\n     * const control = new FormControl('bad@', Validators.email);\n     *\n     * console.log(control.errors); // {email: true}\n     * ```\n     *\n     * @returns An error map with the `email` property\n     * if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n\n  }, {\n    key: \"email\",\n    value: function email(control) {\n      if (isEmptyInputValue(control.value)) {\n        return null; // don't validate empty values to allow optional controls\n      }\n\n      return EMAIL_REGEXP.test(control.value) ? null : {\n        'email': true\n      };\n    }\n    /**\n     * @description\n     * Validator that requires the length of the control's value to be greater than or equal\n     * to the provided minimum length. This validator is also provided by default if you use the\n     * the HTML5 `minlength` attribute. Note that the `minLength` validator is intended to be used\n     * only for types that have a numeric `length` property, such as strings or arrays. The\n     * `minLength` validator logic is also not invoked for values when their `length` property is 0\n     * (for example in case of an empty string or an empty array), to support optional controls. You\n     * can use the standard `required` validator if empty values should not be considered valid.\n     *\n     * @usageNotes\n     *\n     * ### Validate that the field has a minimum of 3 characters\n     *\n     * ```typescript\n     * const control = new FormControl('ng', Validators.minLength(3));\n     *\n     * console.log(control.errors); // {minlength: {requiredLength: 3, actualLength: 2}}\n     * ```\n     *\n     * ```html\n     * <input minlength=\"5\">\n     * ```\n     *\n     * @returns A validator function that returns an error map with the\n     * `minlength` if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n\n  }, {\n    key: \"minLength\",\n    value: function minLength(_minLength) {\n      return function (control) {\n        if (isEmptyInputValue(control.value) || !hasValidLength(control.value)) {\n          // don't validate empty values to allow optional controls\n          // don't validate values without `length` property\n          return null;\n        }\n\n        return control.value.length < _minLength ? {\n          'minlength': {\n            'requiredLength': _minLength,\n            'actualLength': control.value.length\n          }\n        } : null;\n      };\n    }\n    /**\n     * @description\n     * Validator that requires the length of the control's value to be less than or equal\n     * to the provided maximum length. This validator is also provided by default if you use the\n     * the HTML5 `maxlength` attribute. Note that the `maxLength` validator is intended to be used\n     * only for types that have a numeric `length` property, such as strings or arrays.\n     *\n     * @usageNotes\n     *\n     * ### Validate that the field has maximum of 5 characters\n     *\n     * ```typescript\n     * const control = new FormControl('Angular', Validators.maxLength(5));\n     *\n     * console.log(control.errors); // {maxlength: {requiredLength: 5, actualLength: 7}}\n     * ```\n     *\n     * ```html\n     * <input maxlength=\"5\">\n     * ```\n     *\n     * @returns A validator function that returns an error map with the\n     * `maxlength` property if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n\n  }, {\n    key: \"maxLength\",\n    value: function maxLength(_maxLength) {\n      return function (control) {\n        return hasValidLength(control.value) && control.value.length > _maxLength ? {\n          'maxlength': {\n            'requiredLength': _maxLength,\n            'actualLength': control.value.length\n          }\n        } : null;\n      };\n    }\n    /**\n     * @description\n     * Validator that requires the control's value to match a regex pattern. This validator is also\n     * provided by default if you use the HTML5 `pattern` attribute.\n     *\n     * @usageNotes\n     *\n     * ### Validate that the field only contains letters or spaces\n     *\n     * ```typescript\n     * const control = new FormControl('1', Validators.pattern('[a-zA-Z ]*'));\n     *\n     * console.log(control.errors); // {pattern: {requiredPattern: '^[a-zA-Z ]*$', actualValue: '1'}}\n     * ```\n     *\n     * ```html\n     * <input pattern=\"[a-zA-Z ]*\">\n     * ```\n     *\n     * ### Pattern matching with the global or sticky flag\n     *\n     * `RegExp` objects created with the `g` or `y` flags that are passed into `Validators.pattern`\n     * can produce different results on the same input when validations are run consecutively. This is\n     * due to how the behavior of `RegExp.prototype.test` is\n     * specified in [ECMA-262](https://tc39.es/ecma262/#sec-regexpbuiltinexec)\n     * (`RegExp` preserves the index of the last match when the global or sticky flag is used).\n     * Due to this behavior, it is recommended that when using\n     * `Validators.pattern` you **do not** pass in a `RegExp` object with either the global or sticky\n     * flag enabled.\n     *\n     * ```typescript\n     * // Not recommended (since the `g` flag is used)\n     * const controlOne = new FormControl('1', Validators.pattern(/foo/g));\n     *\n     * // Good\n     * const controlTwo = new FormControl('1', Validators.pattern(/foo/));\n     * ```\n     *\n     * @param pattern A regular expression to be used as is to test the values, or a string.\n     * If a string is passed, the `^` character is prepended and the `$` character is\n     * appended to the provided string (if not already present), and the resulting regular\n     * expression is used to test the values.\n     *\n     * @returns A validator function that returns an error map with the\n     * `pattern` property if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n\n  }, {\n    key: \"pattern\",\n    value: function pattern(_pattern) {\n      if (!_pattern) return Validators.nullValidator;\n      var regex;\n      var regexStr;\n\n      if (typeof _pattern === 'string') {\n        regexStr = '';\n        if (_pattern.charAt(0) !== '^') regexStr += '^';\n        regexStr += _pattern;\n        if (_pattern.charAt(_pattern.length - 1) !== '$') regexStr += '$';\n        regex = new RegExp(regexStr);\n      } else {\n        regexStr = _pattern.toString();\n        regex = _pattern;\n      }\n\n      return function (control) {\n        if (isEmptyInputValue(control.value)) {\n          return null; // don't validate empty values to allow optional controls\n        }\n\n        var value = control.value;\n        return regex.test(value) ? null : {\n          'pattern': {\n            'requiredPattern': regexStr,\n            'actualValue': value\n          }\n        };\n      };\n    }\n    /**\n     * @description\n     * Validator that performs no operation.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n\n  }, {\n    key: \"nullValidator\",\n    value: function nullValidator(control) {\n      return null;\n    }\n  }, {\n    key: \"compose\",\n    value: function compose(validators) {\n      if (!validators) return null;\n      var presentValidators = validators.filter(isPresent);\n      if (presentValidators.length == 0) return null;\n      return function (control) {\n        return mergeErrors(executeValidators(control, presentValidators));\n      };\n    }\n    /**\n     * @description\n     * Compose multiple async validators into a single function that returns the union\n     * of the individual error objects for the provided control.\n     *\n     * @returns A validator function that returns an error map with the\n     * merged error objects of the async validators if the validation check fails, otherwise `null`.\n     *\n     * @see `updateValueAndValidity()`\n     *\n     */\n\n  }, {\n    key: \"composeAsync\",\n    value: function composeAsync(validators) {\n      if (!validators) return null;\n      var presentValidators = validators.filter(isPresent);\n      if (presentValidators.length == 0) return null;\n      return function (control) {\n        var observables = executeValidators(control, presentValidators).map(toObservable);\n        return forkJoin(observables).pipe(map(mergeErrors));\n      };\n    }\n  }]);\n\n  return Validators;\n}();\n\nfunction isPresent(o) {\n  return o != null;\n}\n\nfunction toObservable(r) {\n  var obs = ɵisPromise(r) ? from(r) : r;\n\n  if (!ɵisObservable(obs) && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n    throw new Error(\"Expected validator to return Promise or Observable.\");\n  }\n\n  return obs;\n}\n\nfunction mergeErrors(arrayOfErrors) {\n  var res = {}; // Not using Array.reduce here due to a Chrome 80 bug\n  // https://bugs.chromium.org/p/chromium/issues/detail?id=1049982\n\n  arrayOfErrors.forEach(function (errors) {\n    res = errors != null ? Object.assign(Object.assign({}, res), errors) : res;\n  });\n  return Object.keys(res).length === 0 ? null : res;\n}\n\nfunction executeValidators(control, validators) {\n  return validators.map(function (validator) {\n    return validator(control);\n  });\n}\n\nfunction isValidatorFn(validator) {\n  return !validator.validate;\n}\n/**\n * Given the list of validators that may contain both functions as well as classes, return the list\n * of validator functions (convert validator classes into validator functions). This is needed to\n * have consistent structure in validators list before composing them.\n *\n * @param validators The set of validators that may contain validators both in plain function form\n *     as well as represented as a validator class.\n */\n\n\nfunction normalizeValidators(validators) {\n  return validators.map(function (validator) {\n    return isValidatorFn(validator) ? validator : function (c) {\n      return validator.validate(c);\n    };\n  });\n}\n/**\n * Merges synchronous validators into a single validator function (combined using\n * `Validators.compose`).\n */\n\n\nfunction composeValidators(validators) {\n  return validators != null ? Validators.compose(normalizeValidators(validators)) : null;\n}\n/**\n * Merges asynchronous validators into a single validator function (combined using\n * `Validators.composeAsync`).\n */\n\n\nfunction composeAsyncValidators(validators) {\n  return validators != null ? Validators.composeAsync(normalizeValidators(validators)) : null;\n}\n/**\n * Merges raw control validators with a given directive validator and returns the combined list of\n * validators as an array.\n */\n\n\nfunction mergeValidators(controlValidators, dirValidator) {\n  if (controlValidators === null) return [dirValidator];\n  return Array.isArray(controlValidators) ? [].concat(_toConsumableArray(controlValidators), [dirValidator]) : [controlValidators, dirValidator];\n}\n/**\n * Retrieves the list of raw synchronous validators attached to a given control.\n */\n\n\nfunction getControlValidators(control) {\n  return control._rawValidators;\n}\n/**\n * Retrieves the list of raw asynchronous validators attached to a given control.\n */\n\n\nfunction getControlAsyncValidators(control) {\n  return control._rawAsyncValidators;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @description\n * Base class for control directives.\n *\n * This class is only used internally in the `ReactiveFormsModule` and the `FormsModule`.\n *\n * @publicApi\n */\n\n\nvar AbstractControlDirective = /*#__PURE__*/function () {\n  function AbstractControlDirective() {\n    _classCallCheck(this, AbstractControlDirective);\n\n    /**\n     * Set of synchronous validators as they were provided while calling `setValidators` function.\n     * @internal\n     */\n    this._rawValidators = [];\n    /**\n     * Set of asynchronous validators as they were provided while calling `setAsyncValidators`\n     * function.\n     * @internal\n     */\n\n    this._rawAsyncValidators = [];\n    /*\n     * The set of callbacks to be invoked when directive instance is being destroyed.\n     */\n\n    this._onDestroyCallbacks = [];\n  }\n  /**\n   * @description\n   * Reports the value of the control if it is present, otherwise null.\n   */\n\n\n  _createClass(AbstractControlDirective, [{\n    key: \"value\",\n    get: function get() {\n      return this.control ? this.control.value : null;\n    }\n    /**\n     * @description\n     * Reports whether the control is valid. A control is considered valid if no\n     * validation errors exist with the current value.\n     * If the control is not present, null is returned.\n     */\n\n  }, {\n    key: \"valid\",\n    get: function get() {\n      return this.control ? this.control.valid : null;\n    }\n    /**\n     * @description\n     * Reports whether the control is invalid, meaning that an error exists in the input value.\n     * If the control is not present, null is returned.\n     */\n\n  }, {\n    key: \"invalid\",\n    get: function get() {\n      return this.control ? this.control.invalid : null;\n    }\n    /**\n     * @description\n     * Reports whether a control is pending, meaning that that async validation is occurring and\n     * errors are not yet available for the input value. If the control is not present, null is\n     * returned.\n     */\n\n  }, {\n    key: \"pending\",\n    get: function get() {\n      return this.control ? this.control.pending : null;\n    }\n    /**\n     * @description\n     * Reports whether the control is disabled, meaning that the control is disabled\n     * in the UI and is exempt from validation checks and excluded from aggregate\n     * values of ancestor controls. If the control is not present, null is returned.\n     */\n\n  }, {\n    key: \"disabled\",\n    get: function get() {\n      return this.control ? this.control.disabled : null;\n    }\n    /**\n     * @description\n     * Reports whether the control is enabled, meaning that the control is included in ancestor\n     * calculations of validity or value. If the control is not present, null is returned.\n     */\n\n  }, {\n    key: \"enabled\",\n    get: function get() {\n      return this.control ? this.control.enabled : null;\n    }\n    /**\n     * @description\n     * Reports the control's validation errors. If the control is not present, null is returned.\n     */\n\n  }, {\n    key: \"errors\",\n    get: function get() {\n      return this.control ? this.control.errors : null;\n    }\n    /**\n     * @description\n     * Reports whether the control is pristine, meaning that the user has not yet changed\n     * the value in the UI. If the control is not present, null is returned.\n     */\n\n  }, {\n    key: \"pristine\",\n    get: function get() {\n      return this.control ? this.control.pristine : null;\n    }\n    /**\n     * @description\n     * Reports whether the control is dirty, meaning that the user has changed\n     * the value in the UI. If the control is not present, null is returned.\n     */\n\n  }, {\n    key: \"dirty\",\n    get: function get() {\n      return this.control ? this.control.dirty : null;\n    }\n    /**\n     * @description\n     * Reports whether the control is touched, meaning that the user has triggered\n     * a `blur` event on it. If the control is not present, null is returned.\n     */\n\n  }, {\n    key: \"touched\",\n    get: function get() {\n      return this.control ? this.control.touched : null;\n    }\n    /**\n     * @description\n     * Reports the validation status of the control. Possible values include:\n     * 'VALID', 'INVALID', 'DISABLED', and 'PENDING'.\n     * If the control is not present, null is returned.\n     */\n\n  }, {\n    key: \"status\",\n    get: function get() {\n      return this.control ? this.control.status : null;\n    }\n    /**\n     * @description\n     * Reports whether the control is untouched, meaning that the user has not yet triggered\n     * a `blur` event on it. If the control is not present, null is returned.\n     */\n\n  }, {\n    key: \"untouched\",\n    get: function get() {\n      return this.control ? this.control.untouched : null;\n    }\n    /**\n     * @description\n     * Returns a multicasting observable that emits a validation status whenever it is\n     * calculated for the control. If the control is not present, null is returned.\n     */\n\n  }, {\n    key: \"statusChanges\",\n    get: function get() {\n      return this.control ? this.control.statusChanges : null;\n    }\n    /**\n     * @description\n     * Returns a multicasting observable of value changes for the control that emits every time the\n     * value of the control changes in the UI or programmatically.\n     * If the control is not present, null is returned.\n     */\n\n  }, {\n    key: \"valueChanges\",\n    get: function get() {\n      return this.control ? this.control.valueChanges : null;\n    }\n    /**\n     * @description\n     * Returns an array that represents the path from the top-level form to this control.\n     * Each index is the string name of the control on that level.\n     */\n\n  }, {\n    key: \"path\",\n    get: function get() {\n      return null;\n    }\n    /**\n     * Sets synchronous validators for this directive.\n     * @internal\n     */\n\n  }, {\n    key: \"_setValidators\",\n    value: function _setValidators(validators) {\n      this._rawValidators = validators || [];\n      this._composedValidatorFn = composeValidators(this._rawValidators);\n    }\n    /**\n     * Sets asynchronous validators for this directive.\n     * @internal\n     */\n\n  }, {\n    key: \"_setAsyncValidators\",\n    value: function _setAsyncValidators(validators) {\n      this._rawAsyncValidators = validators || [];\n      this._composedAsyncValidatorFn = composeAsyncValidators(this._rawAsyncValidators);\n    }\n    /**\n     * @description\n     * Synchronous validator function composed of all the synchronous validators registered with this\n     * directive.\n     */\n\n  }, {\n    key: \"validator\",\n    get: function get() {\n      return this._composedValidatorFn || null;\n    }\n    /**\n     * @description\n     * Asynchronous validator function composed of all the asynchronous validators registered with\n     * this directive.\n     */\n\n  }, {\n    key: \"asyncValidator\",\n    get: function get() {\n      return this._composedAsyncValidatorFn || null;\n    }\n    /**\n     * Internal function to register callbacks that should be invoked\n     * when directive instance is being destroyed.\n     * @internal\n     */\n\n  }, {\n    key: \"_registerOnDestroy\",\n    value: function _registerOnDestroy(fn) {\n      this._onDestroyCallbacks.push(fn);\n    }\n    /**\n     * Internal function to invoke all registered \"on destroy\" callbacks.\n     * Note: calling this function also clears the list of callbacks.\n     * @internal\n     */\n\n  }, {\n    key: \"_invokeOnDestroyCallbacks\",\n    value: function _invokeOnDestroyCallbacks() {\n      this._onDestroyCallbacks.forEach(function (fn) {\n        return fn();\n      });\n\n      this._onDestroyCallbacks = [];\n    }\n    /**\n     * @description\n     * Resets the control with the provided value if the control is present.\n     */\n\n  }, {\n    key: \"reset\",\n    value: function reset() {\n      var value = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : undefined;\n      if (this.control) this.control.reset(value);\n    }\n    /**\n     * @description\n     * Reports whether the control with the given path has the error specified.\n     *\n     * @param errorCode The code of the error to check\n     * @param path A list of control names that designates how to move from the current control\n     * to the control that should be queried for errors.\n     *\n     * @usageNotes\n     * For example, for the following `FormGroup`:\n     *\n     * ```\n     * form = new FormGroup({\n     *   address: new FormGroup({ street: new FormControl() })\n     * });\n     * ```\n     *\n     * The path to the 'street' control from the root form would be 'address' -> 'street'.\n     *\n     * It can be provided to this method in one of two formats:\n     *\n     * 1. An array of string control names, e.g. `['address', 'street']`\n     * 1. A period-delimited list of control names in one string, e.g. `'address.street'`\n     *\n     * If no path is given, this method checks for the error on the current control.\n     *\n     * @returns whether the given error is present in the control at the given path.\n     *\n     * If the control is not present, false is returned.\n     */\n\n  }, {\n    key: \"hasError\",\n    value: function hasError(errorCode, path) {\n      return this.control ? this.control.hasError(errorCode, path) : false;\n    }\n    /**\n     * @description\n     * Reports error data for the control with the given path.\n     *\n     * @param errorCode The code of the error to check\n     * @param path A list of control names that designates how to move from the current control\n     * to the control that should be queried for errors.\n     *\n     * @usageNotes\n     * For example, for the following `FormGroup`:\n     *\n     * ```\n     * form = new FormGroup({\n     *   address: new FormGroup({ street: new FormControl() })\n     * });\n     * ```\n     *\n     * The path to the 'street' control from the root form would be 'address' -> 'street'.\n     *\n     * It can be provided to this method in one of two formats:\n     *\n     * 1. An array of string control names, e.g. `['address', 'street']`\n     * 1. A period-delimited list of control names in one string, e.g. `'address.street'`\n     *\n     * @returns error data for that particular error. If the control or error is not present,\n     * null is returned.\n     */\n\n  }, {\n    key: \"getError\",\n    value: function getError(errorCode, path) {\n      return this.control ? this.control.getError(errorCode, path) : null;\n    }\n  }]);\n\n  return AbstractControlDirective;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @description\n * A base class for directives that contain multiple registered instances of `NgControl`.\n * Only used by the forms module.\n *\n * @publicApi\n */\n\n\nvar ControlContainer = /*#__PURE__*/function (_AbstractControlDirec) {\n  _inherits(ControlContainer, _AbstractControlDirec);\n\n  var _super = _createSuper(ControlContainer);\n\n  function ControlContainer() {\n    _classCallCheck(this, ControlContainer);\n\n    return _super.apply(this, arguments);\n  }\n\n  _createClass(ControlContainer, [{\n    key: \"formDirective\",\n    get:\n    /**\n     * @description\n     * The top-level form directive for the control.\n     */\n    function get() {\n      return null;\n    }\n    /**\n     * @description\n     * The path to this group.\n     */\n\n  }, {\n    key: \"path\",\n    get: function get() {\n      return null;\n    }\n  }]);\n\n  return ControlContainer;\n}(AbstractControlDirective);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @description\n * A base class that all `FormControl`-based directives extend. It binds a `FormControl`\n * object to a DOM element.\n *\n * @publicApi\n */\n\n\nvar NgControl = /*#__PURE__*/function (_AbstractControlDirec2) {\n  _inherits(NgControl, _AbstractControlDirec2);\n\n  var _super2 = _createSuper(NgControl);\n\n  function NgControl() {\n    var _this;\n\n    _classCallCheck(this, NgControl);\n\n    _this = _super2.apply(this, arguments);\n    /**\n     * @description\n     * The parent form for the control.\n     *\n     * @internal\n     */\n\n    _this._parent = null;\n    /**\n     * @description\n     * The name for the control\n     */\n\n    _this.name = null;\n    /**\n     * @description\n     * The value accessor for the control\n     */\n\n    _this.valueAccessor = null;\n    return _this;\n  }\n\n  return _createClass(NgControl);\n}(AbstractControlDirective);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar AbstractControlStatus = /*#__PURE__*/function () {\n  function AbstractControlStatus(cd) {\n    _classCallCheck(this, AbstractControlStatus);\n\n    this._cd = cd;\n  }\n\n  _createClass(AbstractControlStatus, [{\n    key: \"ngClassUntouched\",\n    get: function get() {\n      return this._cd.control ? this._cd.control.untouched : false;\n    }\n  }, {\n    key: \"ngClassTouched\",\n    get: function get() {\n      return this._cd.control ? this._cd.control.touched : false;\n    }\n  }, {\n    key: \"ngClassPristine\",\n    get: function get() {\n      return this._cd.control ? this._cd.control.pristine : false;\n    }\n  }, {\n    key: \"ngClassDirty\",\n    get: function get() {\n      return this._cd.control ? this._cd.control.dirty : false;\n    }\n  }, {\n    key: \"ngClassValid\",\n    get: function get() {\n      return this._cd.control ? this._cd.control.valid : false;\n    }\n  }, {\n    key: \"ngClassInvalid\",\n    get: function get() {\n      return this._cd.control ? this._cd.control.invalid : false;\n    }\n  }, {\n    key: \"ngClassPending\",\n    get: function get() {\n      return this._cd.control ? this._cd.control.pending : false;\n    }\n  }]);\n\n  return AbstractControlStatus;\n}();\n\nvar ngControlStatusHost = {\n  '[class.ng-untouched]': 'ngClassUntouched',\n  '[class.ng-touched]': 'ngClassTouched',\n  '[class.ng-pristine]': 'ngClassPristine',\n  '[class.ng-dirty]': 'ngClassDirty',\n  '[class.ng-valid]': 'ngClassValid',\n  '[class.ng-invalid]': 'ngClassInvalid',\n  '[class.ng-pending]': 'ngClassPending'\n};\n/**\n * @description\n * Directive automatically applied to Angular form controls that sets CSS classes\n * based on control status.\n *\n * @usageNotes\n *\n * ### CSS classes applied\n *\n * The following classes are applied as the properties become true:\n *\n * * ng-valid\n * * ng-invalid\n * * ng-pending\n * * ng-pristine\n * * ng-dirty\n * * ng-untouched\n * * ng-touched\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\n\nvar NgControlStatus = /*#__PURE__*/function (_AbstractControlStatu) {\n  _inherits(NgControlStatus, _AbstractControlStatu);\n\n  var _super3 = _createSuper(NgControlStatus);\n\n  function NgControlStatus(cd) {\n    _classCallCheck(this, NgControlStatus);\n\n    return _super3.call(this, cd);\n  }\n\n  return _createClass(NgControlStatus);\n}(AbstractControlStatus);\n\nNgControlStatus.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[formControlName],[ngModel],[formControl]',\n    host: ngControlStatusHost\n  }]\n}];\n\nNgControlStatus.ctorParameters = function () {\n  return [{\n    type: NgControl,\n    decorators: [{\n      type: Self\n    }]\n  }];\n};\n/**\n * @description\n * Directive automatically applied to Angular form groups that sets CSS classes\n * based on control status (valid/invalid/dirty/etc).\n *\n * @see `NgControlStatus`\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\n\n\nvar NgControlStatusGroup = /*#__PURE__*/function (_AbstractControlStatu2) {\n  _inherits(NgControlStatusGroup, _AbstractControlStatu2);\n\n  var _super4 = _createSuper(NgControlStatusGroup);\n\n  function NgControlStatusGroup(cd) {\n    _classCallCheck(this, NgControlStatusGroup);\n\n    return _super4.call(this, cd);\n  }\n\n  return _createClass(NgControlStatusGroup);\n}(AbstractControlStatus);\n\nNgControlStatusGroup.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[formGroupName],[formArrayName],[ngModelGroup],[formGroup],form:not([ngNoForm]),[ngForm]',\n    host: ngControlStatusHost\n  }]\n}];\n\nNgControlStatusGroup.ctorParameters = function () {\n  return [{\n    type: ControlContainer,\n    decorators: [{\n      type: Self\n    }]\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar NUMBER_VALUE_ACCESSOR = {\n  provide: NG_VALUE_ACCESSOR,\n  useExisting: forwardRef(function () {\n    return NumberValueAccessor;\n  }),\n  multi: true\n};\n/**\n * @description\n * The `ControlValueAccessor` for writing a number value and listening to number input changes.\n * The value accessor is used by the `FormControlDirective`, `FormControlName`, and `NgModel`\n * directives.\n *\n * @usageNotes\n *\n * ### Using a number input with a reactive form.\n *\n * The following example shows how to use a number input with a reactive form.\n *\n * ```ts\n * const totalCountControl = new FormControl();\n * ```\n *\n * ```\n * <input type=\"number\" [formControl]=\"totalCountControl\">\n * ```\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\n\nvar NumberValueAccessor = /*#__PURE__*/function () {\n  function NumberValueAccessor(_renderer, _elementRef) {\n    _classCallCheck(this, NumberValueAccessor);\n\n    this._renderer = _renderer;\n    this._elementRef = _elementRef;\n    /**\n     * The registered callback function called when a change or input event occurs on the input\n     * element.\n     * @nodoc\n     */\n\n    this.onChange = function (_) {};\n    /**\n     * The registered callback function called when a blur event occurs on the input element.\n     * @nodoc\n     */\n\n\n    this.onTouched = function () {};\n  }\n  /**\n   * Sets the \"value\" property on the input element.\n   * @nodoc\n   */\n\n\n  _createClass(NumberValueAccessor, [{\n    key: \"writeValue\",\n    value: function writeValue(value) {\n      // The value needs to be normalized for IE9, otherwise it is set to 'null' when null\n      var normalizedValue = value == null ? '' : value;\n\n      this._renderer.setProperty(this._elementRef.nativeElement, 'value', normalizedValue);\n    }\n    /**\n     * Registers a function called when the control value changes.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnChange\",\n    value: function registerOnChange(fn) {\n      this.onChange = function (value) {\n        fn(value == '' ? null : parseFloat(value));\n      };\n    }\n    /**\n     * Registers a function called when the control is touched.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnTouched\",\n    value: function registerOnTouched(fn) {\n      this.onTouched = fn;\n    }\n    /**\n     * Sets the \"disabled\" property on the input element.\n     * @nodoc\n     */\n\n  }, {\n    key: \"setDisabledState\",\n    value: function setDisabledState(isDisabled) {\n      this._renderer.setProperty(this._elementRef.nativeElement, 'disabled', isDisabled);\n    }\n  }]);\n\n  return NumberValueAccessor;\n}();\n\nNumberValueAccessor.decorators = [{\n  type: Directive,\n  args: [{\n    selector: 'input[type=number][formControlName],input[type=number][formControl],input[type=number][ngModel]',\n    host: {\n      '(input)': 'onChange($event.target.value)',\n      '(blur)': 'onTouched()'\n    },\n    providers: [NUMBER_VALUE_ACCESSOR]\n  }]\n}];\n\nNumberValueAccessor.ctorParameters = function () {\n  return [{\n    type: Renderer2\n  }, {\n    type: ElementRef\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar RADIO_VALUE_ACCESSOR = {\n  provide: NG_VALUE_ACCESSOR,\n  useExisting: forwardRef(function () {\n    return RadioControlValueAccessor;\n  }),\n  multi: true\n};\n\nfunction throwNameError() {\n  throw new Error(\"\\n      If you define both a name and a formControlName attribute on your radio button, their values\\n      must match. Ex: <input type=\\\"radio\\\" formControlName=\\\"food\\\" name=\\\"food\\\">\\n    \");\n}\n/**\n * @description\n * Class used by Angular to track radio buttons. For internal use only.\n */\n\n\nvar RadioControlRegistry = /*#__PURE__*/function () {\n  function RadioControlRegistry() {\n    _classCallCheck(this, RadioControlRegistry);\n\n    this._accessors = [];\n  }\n  /**\n   * @description\n   * Adds a control to the internal registry. For internal use only.\n   */\n\n\n  _createClass(RadioControlRegistry, [{\n    key: \"add\",\n    value: function add(control, accessor) {\n      this._accessors.push([control, accessor]);\n    }\n    /**\n     * @description\n     * Removes a control from the internal registry. For internal use only.\n     */\n\n  }, {\n    key: \"remove\",\n    value: function remove(accessor) {\n      for (var i = this._accessors.length - 1; i >= 0; --i) {\n        if (this._accessors[i][1] === accessor) {\n          this._accessors.splice(i, 1);\n\n          return;\n        }\n      }\n    }\n    /**\n     * @description\n     * Selects a radio button. For internal use only.\n     */\n\n  }, {\n    key: \"select\",\n    value: function select(accessor) {\n      var _this2 = this;\n\n      this._accessors.forEach(function (c) {\n        if (_this2._isSameGroup(c, accessor) && c[1] !== accessor) {\n          c[1].fireUncheck(accessor.value);\n        }\n      });\n    }\n  }, {\n    key: \"_isSameGroup\",\n    value: function _isSameGroup(controlPair, accessor) {\n      if (!controlPair[0].control) return false;\n      return controlPair[0]._parent === accessor._control._parent && controlPair[1].name === accessor.name;\n    }\n  }]);\n\n  return RadioControlRegistry;\n}();\n\nRadioControlRegistry.decorators = [{\n  type: Injectable\n}];\n/**\n * @description\n * The `ControlValueAccessor` for writing radio control values and listening to radio control\n * changes. The value accessor is used by the `FormControlDirective`, `FormControlName`, and\n * `NgModel` directives.\n *\n * @usageNotes\n *\n * ### Using radio buttons with reactive form directives\n *\n * The follow example shows how to use radio buttons in a reactive form. When using radio buttons in\n * a reactive form, radio buttons in the same group should have the same `formControlName`.\n * Providing a `name` attribute is optional.\n *\n * {@example forms/ts/reactiveRadioButtons/reactive_radio_button_example.ts region='Reactive'}\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\n\nvar RadioControlValueAccessor = /*#__PURE__*/function () {\n  function RadioControlValueAccessor(_renderer, _elementRef, _registry, _injector) {\n    _classCallCheck(this, RadioControlValueAccessor);\n\n    this._renderer = _renderer;\n    this._elementRef = _elementRef;\n    this._registry = _registry;\n    this._injector = _injector;\n    /**\n     * The registered callback function called when a change event occurs on the input element.\n     * @nodoc\n     */\n\n    this.onChange = function () {};\n    /**\n     * The registered callback function called when a blur event occurs on the input element.\n     * @nodoc\n     */\n\n\n    this.onTouched = function () {};\n  }\n  /** @nodoc */\n\n\n  _createClass(RadioControlValueAccessor, [{\n    key: \"ngOnInit\",\n    value: function ngOnInit() {\n      this._control = this._injector.get(NgControl);\n\n      this._checkName();\n\n      this._registry.add(this._control, this);\n    }\n    /** @nodoc */\n\n  }, {\n    key: \"ngOnDestroy\",\n    value: function ngOnDestroy() {\n      this._registry.remove(this);\n    }\n    /**\n     * Sets the \"checked\" property value on the radio input element.\n     * @nodoc\n     */\n\n  }, {\n    key: \"writeValue\",\n    value: function writeValue(value) {\n      this._state = value === this.value;\n\n      this._renderer.setProperty(this._elementRef.nativeElement, 'checked', this._state);\n    }\n    /**\n     * Registers a function called when the control value changes.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnChange\",\n    value: function registerOnChange(fn) {\n      var _this3 = this;\n\n      this._fn = fn;\n\n      this.onChange = function () {\n        fn(_this3.value);\n\n        _this3._registry.select(_this3);\n      };\n    }\n    /**\n     * Sets the \"value\" on the radio input element and unchecks it.\n     *\n     * @param value\n     */\n\n  }, {\n    key: \"fireUncheck\",\n    value: function fireUncheck(value) {\n      this.writeValue(value);\n    }\n    /**\n     * Registers a function called when the control is touched.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnTouched\",\n    value: function registerOnTouched(fn) {\n      this.onTouched = fn;\n    }\n    /**\n     * Sets the \"disabled\" property on the input element.\n     * @nodoc\n     */\n\n  }, {\n    key: \"setDisabledState\",\n    value: function setDisabledState(isDisabled) {\n      this._renderer.setProperty(this._elementRef.nativeElement, 'disabled', isDisabled);\n    }\n  }, {\n    key: \"_checkName\",\n    value: function _checkName() {\n      if (this.name && this.formControlName && this.name !== this.formControlName && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n        throwNameError();\n      }\n\n      if (!this.name && this.formControlName) this.name = this.formControlName;\n    }\n  }]);\n\n  return RadioControlValueAccessor;\n}();\n\nRadioControlValueAccessor.decorators = [{\n  type: Directive,\n  args: [{\n    selector: 'input[type=radio][formControlName],input[type=radio][formControl],input[type=radio][ngModel]',\n    host: {\n      '(change)': 'onChange()',\n      '(blur)': 'onTouched()'\n    },\n    providers: [RADIO_VALUE_ACCESSOR]\n  }]\n}];\n\nRadioControlValueAccessor.ctorParameters = function () {\n  return [{\n    type: Renderer2\n  }, {\n    type: ElementRef\n  }, {\n    type: RadioControlRegistry\n  }, {\n    type: Injector\n  }];\n};\n\nRadioControlValueAccessor.propDecorators = {\n  name: [{\n    type: Input\n  }],\n  formControlName: [{\n    type: Input\n  }],\n  value: [{\n    type: Input\n  }]\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar RANGE_VALUE_ACCESSOR = {\n  provide: NG_VALUE_ACCESSOR,\n  useExisting: forwardRef(function () {\n    return RangeValueAccessor;\n  }),\n  multi: true\n};\n/**\n * @description\n * The `ControlValueAccessor` for writing a range value and listening to range input changes.\n * The value accessor is used by the `FormControlDirective`, `FormControlName`, and  `NgModel`\n * directives.\n *\n * @usageNotes\n *\n * ### Using a range input with a reactive form\n *\n * The following example shows how to use a range input with a reactive form.\n *\n * ```ts\n * const ageControl = new FormControl();\n * ```\n *\n * ```\n * <input type=\"range\" [formControl]=\"ageControl\">\n * ```\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\n\nvar RangeValueAccessor = /*#__PURE__*/function () {\n  function RangeValueAccessor(_renderer, _elementRef) {\n    _classCallCheck(this, RangeValueAccessor);\n\n    this._renderer = _renderer;\n    this._elementRef = _elementRef;\n    /**\n     * The registered callback function called when a change or input event occurs on the input\n     * element.\n     * @nodoc\n     */\n\n    this.onChange = function (_) {};\n    /**\n     * The registered callback function called when a blur event occurs on the input element.\n     * @nodoc\n     */\n\n\n    this.onTouched = function () {};\n  }\n  /**\n   * Sets the \"value\" property on the input element.\n   * @nodoc\n   */\n\n\n  _createClass(RangeValueAccessor, [{\n    key: \"writeValue\",\n    value: function writeValue(value) {\n      this._renderer.setProperty(this._elementRef.nativeElement, 'value', parseFloat(value));\n    }\n    /**\n     * Registers a function called when the control value changes.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnChange\",\n    value: function registerOnChange(fn) {\n      this.onChange = function (value) {\n        fn(value == '' ? null : parseFloat(value));\n      };\n    }\n    /**\n     * Registers a function called when the control is touched.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnTouched\",\n    value: function registerOnTouched(fn) {\n      this.onTouched = fn;\n    }\n    /**\n     * Sets the \"disabled\" property on the range input element.\n     * @nodoc\n     */\n\n  }, {\n    key: \"setDisabledState\",\n    value: function setDisabledState(isDisabled) {\n      this._renderer.setProperty(this._elementRef.nativeElement, 'disabled', isDisabled);\n    }\n  }]);\n\n  return RangeValueAccessor;\n}();\n\nRangeValueAccessor.decorators = [{\n  type: Directive,\n  args: [{\n    selector: 'input[type=range][formControlName],input[type=range][formControl],input[type=range][ngModel]',\n    host: {\n      '(change)': 'onChange($event.target.value)',\n      '(input)': 'onChange($event.target.value)',\n      '(blur)': 'onTouched()'\n    },\n    providers: [RANGE_VALUE_ACCESSOR]\n  }]\n}];\n\nRangeValueAccessor.ctorParameters = function () {\n  return [{\n    type: Renderer2\n  }, {\n    type: ElementRef\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar FormErrorExamples = {\n  formControlName: \"\\n    <div [formGroup]=\\\"myGroup\\\">\\n      <input formControlName=\\\"firstName\\\">\\n    </div>\\n\\n    In your class:\\n\\n    this.myGroup = new FormGroup({\\n       firstName: new FormControl()\\n    });\",\n  formGroupName: \"\\n    <div [formGroup]=\\\"myGroup\\\">\\n       <div formGroupName=\\\"person\\\">\\n          <input formControlName=\\\"firstName\\\">\\n       </div>\\n    </div>\\n\\n    In your class:\\n\\n    this.myGroup = new FormGroup({\\n       person: new FormGroup({ firstName: new FormControl() })\\n    });\",\n  formArrayName: \"\\n    <div [formGroup]=\\\"myGroup\\\">\\n      <div formArrayName=\\\"cities\\\">\\n        <div *ngFor=\\\"let city of cityArray.controls; index as i\\\">\\n          <input [formControlName]=\\\"i\\\">\\n        </div>\\n      </div>\\n    </div>\\n\\n    In your class:\\n\\n    this.cityArray = new FormArray([new FormControl('SF')]);\\n    this.myGroup = new FormGroup({\\n      cities: this.cityArray\\n    });\",\n  ngModelGroup: \"\\n    <form>\\n       <div ngModelGroup=\\\"person\\\">\\n          <input [(ngModel)]=\\\"person.name\\\" name=\\\"firstName\\\">\\n       </div>\\n    </form>\",\n  ngModelWithFormGroup: \"\\n    <div [formGroup]=\\\"myGroup\\\">\\n       <input formControlName=\\\"firstName\\\">\\n       <input [(ngModel)]=\\\"showMoreControls\\\" [ngModelOptions]=\\\"{standalone: true}\\\">\\n    </div>\\n  \"\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar ReactiveErrors = /*#__PURE__*/function () {\n  function ReactiveErrors() {\n    _classCallCheck(this, ReactiveErrors);\n  }\n\n  _createClass(ReactiveErrors, null, [{\n    key: \"controlParentException\",\n    value: function controlParentException() {\n      throw new Error(\"formControlName must be used with a parent formGroup directive.  You'll want to add a formGroup\\n       directive and pass it an existing FormGroup instance (you can create one in your class).\\n\\n      Example:\\n\\n      \".concat(FormErrorExamples.formControlName));\n    }\n  }, {\n    key: \"ngModelGroupException\",\n    value: function ngModelGroupException() {\n      throw new Error(\"formControlName cannot be used with an ngModelGroup parent. It is only compatible with parents\\n       that also have a \\\"form\\\" prefix: formGroupName, formArrayName, or formGroup.\\n\\n       Option 1:  Update the parent to be formGroupName (reactive form strategy)\\n\\n        \".concat(FormErrorExamples.formGroupName, \"\\n\\n        Option 2: Use ngModel instead of formControlName (template-driven strategy)\\n\\n        \").concat(FormErrorExamples.ngModelGroup));\n    }\n  }, {\n    key: \"missingFormException\",\n    value: function missingFormException() {\n      throw new Error(\"formGroup expects a FormGroup instance. Please pass one in.\\n\\n       Example:\\n\\n       \".concat(FormErrorExamples.formControlName));\n    }\n  }, {\n    key: \"groupParentException\",\n    value: function groupParentException() {\n      throw new Error(\"formGroupName must be used with a parent formGroup directive.  You'll want to add a formGroup\\n      directive and pass it an existing FormGroup instance (you can create one in your class).\\n\\n      Example:\\n\\n      \".concat(FormErrorExamples.formGroupName));\n    }\n  }, {\n    key: \"arrayParentException\",\n    value: function arrayParentException() {\n      throw new Error(\"formArrayName must be used with a parent formGroup directive.  You'll want to add a formGroup\\n       directive and pass it an existing FormGroup instance (you can create one in your class).\\n\\n        Example:\\n\\n        \".concat(FormErrorExamples.formArrayName));\n    }\n  }, {\n    key: \"disabledAttrWarning\",\n    value: function disabledAttrWarning() {\n      console.warn(\"\\n      It looks like you're using the disabled attribute with a reactive form directive. If you set disabled to true\\n      when you set up this control in your component class, the disabled attribute will actually be set in the DOM for\\n      you. We recommend using this approach to avoid 'changed after checked' errors.\\n\\n      Example:\\n      form = new FormGroup({\\n        first: new FormControl({value: 'Nancy', disabled: true}, Validators.required),\\n        last: new FormControl('Drew', Validators.required)\\n      });\\n    \");\n    }\n  }, {\n    key: \"ngModelWarning\",\n    value: function ngModelWarning(directiveName) {\n      console.warn(\"\\n    It looks like you're using ngModel on the same form field as \".concat(directiveName, \".\\n    Support for using the ngModel input property and ngModelChange event with\\n    reactive form directives has been deprecated in Angular v6 and will be removed\\n    in a future version of Angular.\\n\\n    For more information on this, see our API docs here:\\n    https://angular.io/api/forms/\").concat(directiveName === 'formControl' ? 'FormControlDirective' : 'FormControlName', \"#use-with-ngmodel\\n    \"));\n    }\n  }]);\n\n  return ReactiveErrors;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar SELECT_VALUE_ACCESSOR = {\n  provide: NG_VALUE_ACCESSOR,\n  useExisting: forwardRef(function () {\n    return SelectControlValueAccessor;\n  }),\n  multi: true\n};\n\nfunction _buildValueString(id, value) {\n  if (id == null) return \"\".concat(value);\n  if (value && _typeof(value) === 'object') value = 'Object';\n  return \"\".concat(id, \": \").concat(value).slice(0, 50);\n}\n\nfunction _extractId(valueString) {\n  return valueString.split(':')[0];\n}\n/**\n * @description\n * The `ControlValueAccessor` for writing select control values and listening to select control\n * changes. The value accessor is used by the `FormControlDirective`, `FormControlName`, and\n * `NgModel` directives.\n *\n * @usageNotes\n *\n * ### Using select controls in a reactive form\n *\n * The following examples show how to use a select control in a reactive form.\n *\n * {@example forms/ts/reactiveSelectControl/reactive_select_control_example.ts region='Component'}\n *\n * ### Using select controls in a template-driven form\n *\n * To use a select in a template-driven form, simply add an `ngModel` and a `name`\n * attribute to the main `<select>` tag.\n *\n * {@example forms/ts/selectControl/select_control_example.ts region='Component'}\n *\n * ### Customizing option selection\n *\n * Angular uses object identity to select option. It's possible for the identities of items\n * to change while the data does not. This can happen, for example, if the items are produced\n * from an RPC to the server, and that RPC is re-run. Even if the data hasn't changed, the\n * second response will produce objects with different identities.\n *\n * To customize the default option comparison algorithm, `<select>` supports `compareWith` input.\n * `compareWith` takes a **function** which has two arguments: `option1` and `option2`.\n * If `compareWith` is given, Angular selects option by the return value of the function.\n *\n * ```ts\n * const selectedCountriesControl = new FormControl();\n * ```\n *\n * ```\n * <select [compareWith]=\"compareFn\"  [formControl]=\"selectedCountriesControl\">\n *     <option *ngFor=\"let country of countries\" [ngValue]=\"country\">\n *         {{country.name}}\n *     </option>\n * </select>\n *\n * compareFn(c1: Country, c2: Country): boolean {\n *     return c1 && c2 ? c1.id === c2.id : c1 === c2;\n * }\n * ```\n *\n * **Note:** We listen to the 'change' event because 'input' events aren't fired\n * for selects in Firefox and IE:\n * https://bugzilla.mozilla.org/show_bug.cgi?id=1024350\n * https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/4660045/\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\n\n\nvar SelectControlValueAccessor = /*#__PURE__*/function () {\n  function SelectControlValueAccessor(_renderer, _elementRef) {\n    _classCallCheck(this, SelectControlValueAccessor);\n\n    this._renderer = _renderer;\n    this._elementRef = _elementRef;\n    /** @internal */\n\n    this._optionMap = new Map();\n    /** @internal */\n\n    this._idCounter = 0;\n    /**\n     * The registered callback function called when a change event occurs on the input element.\n     * @nodoc\n     */\n\n    this.onChange = function (_) {};\n    /**\n     * The registered callback function called when a blur event occurs on the input element.\n     * @nodoc\n     */\n\n\n    this.onTouched = function () {};\n\n    this._compareWith = Object.is;\n  }\n  /**\n   * @description\n   * Tracks the option comparison algorithm for tracking identities when\n   * checking for changes.\n   */\n\n\n  _createClass(SelectControlValueAccessor, [{\n    key: \"compareWith\",\n    set: function set(fn) {\n      if (typeof fn !== 'function' && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n        throw new Error(\"compareWith must be a function, but received \".concat(JSON.stringify(fn)));\n      }\n\n      this._compareWith = fn;\n    }\n    /**\n     * Sets the \"value\" property on the input element. The \"selectedIndex\"\n     * property is also set if an ID is provided on the option element.\n     * @nodoc\n     */\n\n  }, {\n    key: \"writeValue\",\n    value: function writeValue(value) {\n      this.value = value;\n\n      var id = this._getOptionId(value);\n\n      if (id == null) {\n        this._renderer.setProperty(this._elementRef.nativeElement, 'selectedIndex', -1);\n      }\n\n      var valueString = _buildValueString(id, value);\n\n      this._renderer.setProperty(this._elementRef.nativeElement, 'value', valueString);\n    }\n    /**\n     * Registers a function called when the control value changes.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnChange\",\n    value: function registerOnChange(fn) {\n      var _this4 = this;\n\n      this.onChange = function (valueString) {\n        _this4.value = _this4._getOptionValue(valueString);\n        fn(_this4.value);\n      };\n    }\n    /**\n     * Registers a function called when the control is touched.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnTouched\",\n    value: function registerOnTouched(fn) {\n      this.onTouched = fn;\n    }\n    /**\n     * Sets the \"disabled\" property on the select input element.\n     * @nodoc\n     */\n\n  }, {\n    key: \"setDisabledState\",\n    value: function setDisabledState(isDisabled) {\n      this._renderer.setProperty(this._elementRef.nativeElement, 'disabled', isDisabled);\n    }\n    /** @internal */\n\n  }, {\n    key: \"_registerOption\",\n    value: function _registerOption() {\n      return (this._idCounter++).toString();\n    }\n    /** @internal */\n\n  }, {\n    key: \"_getOptionId\",\n    value: function _getOptionId(value) {\n      for (var _i = 0, _Array$from = Array.from(this._optionMap.keys()); _i < _Array$from.length; _i++) {\n        var id = _Array$from[_i];\n        if (this._compareWith(this._optionMap.get(id), value)) return id;\n      }\n\n      return null;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_getOptionValue\",\n    value: function _getOptionValue(valueString) {\n      var id = _extractId(valueString);\n\n      return this._optionMap.has(id) ? this._optionMap.get(id) : valueString;\n    }\n  }]);\n\n  return SelectControlValueAccessor;\n}();\n\nSelectControlValueAccessor.decorators = [{\n  type: Directive,\n  args: [{\n    selector: 'select:not([multiple])[formControlName],select:not([multiple])[formControl],select:not([multiple])[ngModel]',\n    host: {\n      '(change)': 'onChange($event.target.value)',\n      '(blur)': 'onTouched()'\n    },\n    providers: [SELECT_VALUE_ACCESSOR]\n  }]\n}];\n\nSelectControlValueAccessor.ctorParameters = function () {\n  return [{\n    type: Renderer2\n  }, {\n    type: ElementRef\n  }];\n};\n\nSelectControlValueAccessor.propDecorators = {\n  compareWith: [{\n    type: Input\n  }]\n};\n/**\n * @description\n * Marks `<option>` as dynamic, so Angular can be notified when options change.\n *\n * @see `SelectControlValueAccessor`\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\n\nvar NgSelectOption = /*#__PURE__*/function () {\n  function NgSelectOption(_element, _renderer, _select) {\n    _classCallCheck(this, NgSelectOption);\n\n    this._element = _element;\n    this._renderer = _renderer;\n    this._select = _select;\n    if (this._select) this.id = this._select._registerOption();\n  }\n  /**\n   * @description\n   * Tracks the value bound to the option element. Unlike the value binding,\n   * ngValue supports binding to objects.\n   */\n\n\n  _createClass(NgSelectOption, [{\n    key: \"ngValue\",\n    set: function set(value) {\n      if (this._select == null) return;\n\n      this._select._optionMap.set(this.id, value);\n\n      this._setElementValue(_buildValueString(this.id, value));\n\n      this._select.writeValue(this._select.value);\n    }\n    /**\n     * @description\n     * Tracks simple string values bound to the option element.\n     * For objects, use the `ngValue` input binding.\n     */\n\n  }, {\n    key: \"value\",\n    set: function set(value) {\n      this._setElementValue(value);\n\n      if (this._select) this._select.writeValue(this._select.value);\n    }\n    /** @internal */\n\n  }, {\n    key: \"_setElementValue\",\n    value: function _setElementValue(value) {\n      this._renderer.setProperty(this._element.nativeElement, 'value', value);\n    }\n    /** @nodoc */\n\n  }, {\n    key: \"ngOnDestroy\",\n    value: function ngOnDestroy() {\n      if (this._select) {\n        this._select._optionMap.delete(this.id);\n\n        this._select.writeValue(this._select.value);\n      }\n    }\n  }]);\n\n  return NgSelectOption;\n}();\n\nNgSelectOption.decorators = [{\n  type: Directive,\n  args: [{\n    selector: 'option'\n  }]\n}];\n\nNgSelectOption.ctorParameters = function () {\n  return [{\n    type: ElementRef\n  }, {\n    type: Renderer2\n  }, {\n    type: SelectControlValueAccessor,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Host\n    }]\n  }];\n};\n\nNgSelectOption.propDecorators = {\n  ngValue: [{\n    type: Input,\n    args: ['ngValue']\n  }],\n  value: [{\n    type: Input,\n    args: ['value']\n  }]\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar SELECT_MULTIPLE_VALUE_ACCESSOR = {\n  provide: NG_VALUE_ACCESSOR,\n  useExisting: forwardRef(function () {\n    return SelectMultipleControlValueAccessor;\n  }),\n  multi: true\n};\n\nfunction _buildValueString$1(id, value) {\n  if (id == null) return \"\".concat(value);\n  if (typeof value === 'string') value = \"'\".concat(value, \"'\");\n  if (value && _typeof(value) === 'object') value = 'Object';\n  return \"\".concat(id, \": \").concat(value).slice(0, 50);\n}\n\nfunction _extractId$1(valueString) {\n  return valueString.split(':')[0];\n}\n/** Mock interface for HTMLCollection */\n\n\nvar HTMLCollection = /*#__PURE__*/_createClass(function HTMLCollection() {\n  _classCallCheck(this, HTMLCollection);\n});\n/**\n * @description\n * The `ControlValueAccessor` for writing multi-select control values and listening to multi-select\n * control changes. The value accessor is used by the `FormControlDirective`, `FormControlName`, and\n * `NgModel` directives.\n *\n * @see `SelectControlValueAccessor`\n *\n * @usageNotes\n *\n * ### Using a multi-select control\n *\n * The follow example shows you how to use a multi-select control with a reactive form.\n *\n * ```ts\n * const countryControl = new FormControl();\n * ```\n *\n * ```\n * <select multiple name=\"countries\" [formControl]=\"countryControl\">\n *   <option *ngFor=\"let country of countries\" [ngValue]=\"country\">\n *     {{ country.name }}\n *   </option>\n * </select>\n * ```\n *\n * ### Customizing option selection\n *\n * To customize the default option comparison algorithm, `<select>` supports `compareWith` input.\n * See the `SelectControlValueAccessor` for usage.\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\n\n\nvar SelectMultipleControlValueAccessor = /*#__PURE__*/function () {\n  function SelectMultipleControlValueAccessor(_renderer, _elementRef) {\n    _classCallCheck(this, SelectMultipleControlValueAccessor);\n\n    this._renderer = _renderer;\n    this._elementRef = _elementRef;\n    /** @internal */\n\n    this._optionMap = new Map();\n    /** @internal */\n\n    this._idCounter = 0;\n    /**\n     * The registered callback function called when a change event occurs on the input element.\n     * @nodoc\n     */\n\n    this.onChange = function (_) {};\n    /**\n     * The registered callback function called when a blur event occurs on the input element.\n     * @nodoc\n     */\n\n\n    this.onTouched = function () {};\n\n    this._compareWith = Object.is;\n  }\n  /**\n   * @description\n   * Tracks the option comparison algorithm for tracking identities when\n   * checking for changes.\n   */\n\n\n  _createClass(SelectMultipleControlValueAccessor, [{\n    key: \"compareWith\",\n    set: function set(fn) {\n      if (typeof fn !== 'function' && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n        throw new Error(\"compareWith must be a function, but received \".concat(JSON.stringify(fn)));\n      }\n\n      this._compareWith = fn;\n    }\n    /**\n     * Sets the \"value\" property on one or of more of the select's options.\n     * @nodoc\n     */\n\n  }, {\n    key: \"writeValue\",\n    value: function writeValue(value) {\n      var _this5 = this;\n\n      this.value = value;\n      var optionSelectedStateSetter;\n\n      if (Array.isArray(value)) {\n        // convert values to ids\n        var ids = value.map(function (v) {\n          return _this5._getOptionId(v);\n        });\n\n        optionSelectedStateSetter = function optionSelectedStateSetter(opt, o) {\n          opt._setSelected(ids.indexOf(o.toString()) > -1);\n        };\n      } else {\n        optionSelectedStateSetter = function optionSelectedStateSetter(opt, o) {\n          opt._setSelected(false);\n        };\n      }\n\n      this._optionMap.forEach(optionSelectedStateSetter);\n    }\n    /**\n     * Registers a function called when the control value changes\n     * and writes an array of the selected options.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnChange\",\n    value: function registerOnChange(fn) {\n      var _this6 = this;\n\n      this.onChange = function (_) {\n        var selected = [];\n\n        if (_.selectedOptions !== undefined) {\n          var options = _.selectedOptions;\n\n          for (var i = 0; i < options.length; i++) {\n            var opt = options.item(i);\n\n            var val = _this6._getOptionValue(opt.value);\n\n            selected.push(val);\n          }\n        } // Degrade on IE\n        else {\n          var _options = _.options;\n\n          for (var _i2 = 0; _i2 < _options.length; _i2++) {\n            var _opt = _options.item(_i2);\n\n            if (_opt.selected) {\n              var _val = _this6._getOptionValue(_opt.value);\n\n              selected.push(_val);\n            }\n          }\n        }\n\n        _this6.value = selected;\n        fn(selected);\n      };\n    }\n    /**\n     * Registers a function called when the control is touched.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnTouched\",\n    value: function registerOnTouched(fn) {\n      this.onTouched = fn;\n    }\n    /**\n     * Sets the \"disabled\" property on the select input element.\n     * @nodoc\n     */\n\n  }, {\n    key: \"setDisabledState\",\n    value: function setDisabledState(isDisabled) {\n      this._renderer.setProperty(this._elementRef.nativeElement, 'disabled', isDisabled);\n    }\n    /** @internal */\n\n  }, {\n    key: \"_registerOption\",\n    value: function _registerOption(value) {\n      var id = (this._idCounter++).toString();\n\n      this._optionMap.set(id, value);\n\n      return id;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_getOptionId\",\n    value: function _getOptionId(value) {\n      for (var _i3 = 0, _Array$from2 = Array.from(this._optionMap.keys()); _i3 < _Array$from2.length; _i3++) {\n        var id = _Array$from2[_i3];\n        if (this._compareWith(this._optionMap.get(id)._value, value)) return id;\n      }\n\n      return null;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_getOptionValue\",\n    value: function _getOptionValue(valueString) {\n      var id = _extractId$1(valueString);\n\n      return this._optionMap.has(id) ? this._optionMap.get(id)._value : valueString;\n    }\n  }]);\n\n  return SelectMultipleControlValueAccessor;\n}();\n\nSelectMultipleControlValueAccessor.decorators = [{\n  type: Directive,\n  args: [{\n    selector: 'select[multiple][formControlName],select[multiple][formControl],select[multiple][ngModel]',\n    host: {\n      '(change)': 'onChange($event.target)',\n      '(blur)': 'onTouched()'\n    },\n    providers: [SELECT_MULTIPLE_VALUE_ACCESSOR]\n  }]\n}];\n\nSelectMultipleControlValueAccessor.ctorParameters = function () {\n  return [{\n    type: Renderer2\n  }, {\n    type: ElementRef\n  }];\n};\n\nSelectMultipleControlValueAccessor.propDecorators = {\n  compareWith: [{\n    type: Input\n  }]\n};\n/**\n * @description\n * Marks `<option>` as dynamic, so Angular can be notified when options change.\n *\n * @see `SelectMultipleControlValueAccessor`\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\n\nvar ɵNgSelectMultipleOption = /*#__PURE__*/function () {\n  function ɵNgSelectMultipleOption(_element, _renderer, _select) {\n    _classCallCheck(this, ɵNgSelectMultipleOption);\n\n    this._element = _element;\n    this._renderer = _renderer;\n    this._select = _select;\n\n    if (this._select) {\n      this.id = this._select._registerOption(this);\n    }\n  }\n  /**\n   * @description\n   * Tracks the value bound to the option element. Unlike the value binding,\n   * ngValue supports binding to objects.\n   */\n\n\n  _createClass(ɵNgSelectMultipleOption, [{\n    key: \"ngValue\",\n    set: function set(value) {\n      if (this._select == null) return;\n      this._value = value;\n\n      this._setElementValue(_buildValueString$1(this.id, value));\n\n      this._select.writeValue(this._select.value);\n    }\n    /**\n     * @description\n     * Tracks simple string values bound to the option element.\n     * For objects, use the `ngValue` input binding.\n     */\n\n  }, {\n    key: \"value\",\n    set: function set(value) {\n      if (this._select) {\n        this._value = value;\n\n        this._setElementValue(_buildValueString$1(this.id, value));\n\n        this._select.writeValue(this._select.value);\n      } else {\n        this._setElementValue(value);\n      }\n    }\n    /** @internal */\n\n  }, {\n    key: \"_setElementValue\",\n    value: function _setElementValue(value) {\n      this._renderer.setProperty(this._element.nativeElement, 'value', value);\n    }\n    /** @internal */\n\n  }, {\n    key: \"_setSelected\",\n    value: function _setSelected(selected) {\n      this._renderer.setProperty(this._element.nativeElement, 'selected', selected);\n    }\n    /** @nodoc */\n\n  }, {\n    key: \"ngOnDestroy\",\n    value: function ngOnDestroy() {\n      if (this._select) {\n        this._select._optionMap.delete(this.id);\n\n        this._select.writeValue(this._select.value);\n      }\n    }\n  }]);\n\n  return ɵNgSelectMultipleOption;\n}();\n\nɵNgSelectMultipleOption.decorators = [{\n  type: Directive,\n  args: [{\n    selector: 'option'\n  }]\n}];\n\nɵNgSelectMultipleOption.ctorParameters = function () {\n  return [{\n    type: ElementRef\n  }, {\n    type: Renderer2\n  }, {\n    type: SelectMultipleControlValueAccessor,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Host\n    }]\n  }];\n};\n\nɵNgSelectMultipleOption.propDecorators = {\n  ngValue: [{\n    type: Input,\n    args: ['ngValue']\n  }],\n  value: [{\n    type: Input,\n    args: ['value']\n  }]\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nfunction controlPath(name, parent) {\n  return [].concat(_toConsumableArray(parent.path), [name]);\n}\n\nfunction setUpControl(control, dir) {\n  if (typeof ngDevMode === 'undefined' || ngDevMode) {\n    if (!control) _throwError(dir, 'Cannot find control with');\n    if (!dir.valueAccessor) _throwError(dir, 'No value accessor for form control with');\n  }\n\n  setUpValidators(control, dir,\n  /* handleOnValidatorChange */\n  true);\n  dir.valueAccessor.writeValue(control.value);\n  setUpViewChangePipeline(control, dir);\n  setUpModelChangePipeline(control, dir);\n  setUpBlurPipeline(control, dir);\n  setUpDisabledChangeHandler(control, dir);\n}\n\nfunction cleanUpControl(control, dir) {\n  var noop = function noop() {\n    if (typeof ngDevMode === 'undefined' || ngDevMode) {\n      _noControlError(dir);\n    }\n  };\n\n  dir.valueAccessor.registerOnChange(noop);\n  dir.valueAccessor.registerOnTouched(noop);\n  cleanUpValidators(control, dir,\n  /* handleOnValidatorChange */\n  true);\n\n  if (control) {\n    dir._invokeOnDestroyCallbacks();\n\n    control._registerOnCollectionChange(function () {});\n  }\n}\n\nfunction registerOnValidatorChange(validators, onChange) {\n  validators.forEach(function (validator) {\n    if (validator.registerOnValidatorChange) validator.registerOnValidatorChange(onChange);\n  });\n}\n/**\n * Sets up disabled change handler function on a given form control if ControlValueAccessor\n * associated with a given directive instance supports the `setDisabledState` call.\n *\n * @param control Form control where disabled change handler should be setup.\n * @param dir Corresponding directive instance associated with this control.\n */\n\n\nfunction setUpDisabledChangeHandler(control, dir) {\n  if (dir.valueAccessor.setDisabledState) {\n    var onDisabledChange = function onDisabledChange(isDisabled) {\n      dir.valueAccessor.setDisabledState(isDisabled);\n    };\n\n    control.registerOnDisabledChange(onDisabledChange); // Register a callback function to cleanup disabled change handler\n    // from a control instance when a directive is destroyed.\n\n    dir._registerOnDestroy(function () {\n      control._unregisterOnDisabledChange(onDisabledChange);\n    });\n  }\n}\n/**\n * Sets up sync and async directive validators on provided form control.\n * This function merges validators from the directive into the validators of the control.\n *\n * @param control Form control where directive validators should be setup.\n * @param dir Directive instance that contains validators to be setup.\n * @param handleOnValidatorChange Flag that determines whether directive validators should be setup\n *     to handle validator input change.\n */\n\n\nfunction setUpValidators(control, dir, handleOnValidatorChange) {\n  var validators = getControlValidators(control);\n\n  if (dir.validator !== null) {\n    control.setValidators(mergeValidators(validators, dir.validator));\n  } else if (typeof validators === 'function') {\n    // If sync validators are represented by a single validator function, we force the\n    // `Validators.compose` call to happen by executing the `setValidators` function with\n    // an array that contains that function. We need this to avoid possible discrepancies in\n    // validators behavior, so sync validators are always processed by the `Validators.compose`.\n    // Note: we should consider moving this logic inside the `setValidators` function itself, so we\n    // have consistent behavior on AbstractControl API level. The same applies to the async\n    // validators logic below.\n    control.setValidators([validators]);\n  }\n\n  var asyncValidators = getControlAsyncValidators(control);\n\n  if (dir.asyncValidator !== null) {\n    control.setAsyncValidators(mergeValidators(asyncValidators, dir.asyncValidator));\n  } else if (typeof asyncValidators === 'function') {\n    control.setAsyncValidators([asyncValidators]);\n  } // Re-run validation when validator binding changes, e.g. minlength=3 -> minlength=4\n\n\n  if (handleOnValidatorChange) {\n    var onValidatorChange = function onValidatorChange() {\n      return control.updateValueAndValidity();\n    };\n\n    registerOnValidatorChange(dir._rawValidators, onValidatorChange);\n    registerOnValidatorChange(dir._rawAsyncValidators, onValidatorChange);\n  }\n}\n/**\n * Cleans up sync and async directive validators on provided form control.\n * This function reverts the setup performed by the `setUpValidators` function, i.e.\n * removes directive-specific validators from a given control instance.\n *\n * @param control Form control from where directive validators should be removed.\n * @param dir Directive instance that contains validators to be removed.\n * @param handleOnValidatorChange Flag that determines whether directive validators should also be\n *     cleaned up to stop handling validator input change (if previously configured to do so).\n */\n\n\nfunction cleanUpValidators(control, dir, handleOnValidatorChange) {\n  if (control !== null) {\n    if (dir.validator !== null) {\n      var validators = getControlValidators(control);\n\n      if (Array.isArray(validators) && validators.length > 0) {\n        // Filter out directive validator function.\n        control.setValidators(validators.filter(function (validator) {\n          return validator !== dir.validator;\n        }));\n      }\n    }\n\n    if (dir.asyncValidator !== null) {\n      var asyncValidators = getControlAsyncValidators(control);\n\n      if (Array.isArray(asyncValidators) && asyncValidators.length > 0) {\n        // Filter out directive async validator function.\n        control.setAsyncValidators(asyncValidators.filter(function (asyncValidator) {\n          return asyncValidator !== dir.asyncValidator;\n        }));\n      }\n    }\n  }\n\n  if (handleOnValidatorChange) {\n    // Clear onValidatorChange callbacks by providing a noop function.\n    var noop = function noop() {};\n\n    registerOnValidatorChange(dir._rawValidators, noop);\n    registerOnValidatorChange(dir._rawAsyncValidators, noop);\n  }\n}\n\nfunction setUpViewChangePipeline(control, dir) {\n  dir.valueAccessor.registerOnChange(function (newValue) {\n    control._pendingValue = newValue;\n    control._pendingChange = true;\n    control._pendingDirty = true;\n    if (control.updateOn === 'change') updateControl(control, dir);\n  });\n}\n\nfunction setUpBlurPipeline(control, dir) {\n  dir.valueAccessor.registerOnTouched(function () {\n    control._pendingTouched = true;\n    if (control.updateOn === 'blur' && control._pendingChange) updateControl(control, dir);\n    if (control.updateOn !== 'submit') control.markAsTouched();\n  });\n}\n\nfunction updateControl(control, dir) {\n  if (control._pendingDirty) control.markAsDirty();\n  control.setValue(control._pendingValue, {\n    emitModelToViewChange: false\n  });\n  dir.viewToModelUpdate(control._pendingValue);\n  control._pendingChange = false;\n}\n\nfunction setUpModelChangePipeline(control, dir) {\n  var onChange = function onChange(newValue, emitModelEvent) {\n    // control -> view\n    dir.valueAccessor.writeValue(newValue); // control -> ngModel\n\n    if (emitModelEvent) dir.viewToModelUpdate(newValue);\n  };\n\n  control.registerOnChange(onChange); // Register a callback function to cleanup onChange handler\n  // from a control instance when a directive is destroyed.\n\n  dir._registerOnDestroy(function () {\n    control._unregisterOnChange(onChange);\n  });\n}\n\nfunction setUpFormContainer(control, dir) {\n  if (control == null && (typeof ngDevMode === 'undefined' || ngDevMode)) _throwError(dir, 'Cannot find control with');\n  setUpValidators(control, dir,\n  /* handleOnValidatorChange */\n  false);\n}\n\nfunction _noControlError(dir) {\n  return _throwError(dir, 'There is no FormControl instance attached to form control element with');\n}\n\nfunction _throwError(dir, message) {\n  var messageEnd;\n\n  if (dir.path.length > 1) {\n    messageEnd = \"path: '\".concat(dir.path.join(' -> '), \"'\");\n  } else if (dir.path[0]) {\n    messageEnd = \"name: '\".concat(dir.path, \"'\");\n  } else {\n    messageEnd = 'unspecified name attribute';\n  }\n\n  throw new Error(\"\".concat(message, \" \").concat(messageEnd));\n}\n\nfunction isPropertyUpdated(changes, viewModel) {\n  if (!changes.hasOwnProperty('model')) return false;\n  var change = changes['model'];\n  if (change.isFirstChange()) return true;\n  return !Object.is(viewModel, change.currentValue);\n}\n\nvar BUILTIN_ACCESSORS = [CheckboxControlValueAccessor, RangeValueAccessor, NumberValueAccessor, SelectControlValueAccessor, SelectMultipleControlValueAccessor, RadioControlValueAccessor];\n\nfunction isBuiltInAccessor(valueAccessor) {\n  return BUILTIN_ACCESSORS.some(function (a) {\n    return valueAccessor.constructor === a;\n  });\n}\n\nfunction syncPendingControls(form, directives) {\n  form._syncPendingControls();\n\n  directives.forEach(function (dir) {\n    var control = dir.control;\n\n    if (control.updateOn === 'submit' && control._pendingChange) {\n      dir.viewToModelUpdate(control._pendingValue);\n      control._pendingChange = false;\n    }\n  });\n} // TODO: vsavkin remove it once https://github.com/angular/angular/issues/3011 is implemented\n\n\nfunction selectValueAccessor(dir, valueAccessors) {\n  if (!valueAccessors) return null;\n  if (!Array.isArray(valueAccessors) && (typeof ngDevMode === 'undefined' || ngDevMode)) _throwError(dir, 'Value accessor was not provided as an array for form control with');\n  var defaultAccessor = undefined;\n  var builtinAccessor = undefined;\n  var customAccessor = undefined;\n  valueAccessors.forEach(function (v) {\n    if (v.constructor === DefaultValueAccessor) {\n      defaultAccessor = v;\n    } else if (isBuiltInAccessor(v)) {\n      if (builtinAccessor && (typeof ngDevMode === 'undefined' || ngDevMode)) _throwError(dir, 'More than one built-in value accessor matches form control with');\n      builtinAccessor = v;\n    } else {\n      if (customAccessor && (typeof ngDevMode === 'undefined' || ngDevMode)) _throwError(dir, 'More than one custom value accessor matches form control with');\n      customAccessor = v;\n    }\n  });\n  if (customAccessor) return customAccessor;\n  if (builtinAccessor) return builtinAccessor;\n  if (defaultAccessor) return defaultAccessor;\n\n  if (typeof ngDevMode === 'undefined' || ngDevMode) {\n    _throwError(dir, 'No valid value accessor for form control with');\n  }\n\n  return null;\n}\n\nfunction removeListItem(list, el) {\n  var index = list.indexOf(el);\n  if (index > -1) list.splice(index, 1);\n} // TODO(kara): remove after deprecation period\n\n\nfunction _ngModelWarning(name, type, instance, warningConfig) {\n  if (!isDevMode() || warningConfig === 'never') return;\n\n  if ((warningConfig === null || warningConfig === 'once') && !type._ngModelWarningSentOnce || warningConfig === 'always' && !instance._ngModelWarningSent) {\n    if (typeof ngDevMode === 'undefined' || ngDevMode) {\n      ReactiveErrors.ngModelWarning(name);\n    }\n\n    type._ngModelWarningSentOnce = true;\n    instance._ngModelWarningSent = true;\n  }\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Reports that a FormControl is valid, meaning that no errors exist in the input value.\n *\n * @see `status`\n */\n\n\nvar VALID = 'VALID';\n/**\n * Reports that a FormControl is invalid, meaning that an error exists in the input value.\n *\n * @see `status`\n */\n\nvar INVALID = 'INVALID';\n/**\n * Reports that a FormControl is pending, meaning that that async validation is occurring and\n * errors are not yet available for the input value.\n *\n * @see `markAsPending`\n * @see `status`\n */\n\nvar PENDING = 'PENDING';\n/**\n * Reports that a FormControl is disabled, meaning that the control is exempt from ancestor\n * calculations of validity or value.\n *\n * @see `markAsDisabled`\n * @see `status`\n */\n\nvar DISABLED = 'DISABLED';\n\nfunction _find(control, path, delimiter) {\n  if (path == null) return null;\n\n  if (!Array.isArray(path)) {\n    path = path.split(delimiter);\n  }\n\n  if (Array.isArray(path) && path.length === 0) return null; // Not using Array.reduce here due to a Chrome 80 bug\n  // https://bugs.chromium.org/p/chromium/issues/detail?id=1049982\n\n  var controlToFind = control;\n  path.forEach(function (name) {\n    if (controlToFind instanceof FormGroup) {\n      controlToFind = controlToFind.controls.hasOwnProperty(name) ? controlToFind.controls[name] : null;\n    } else if (controlToFind instanceof FormArray) {\n      controlToFind = controlToFind.at(name) || null;\n    } else {\n      controlToFind = null;\n    }\n  });\n  return controlToFind;\n}\n/**\n * Gets validators from either an options object or given validators.\n */\n\n\nfunction pickValidators(validatorOrOpts) {\n  return (isOptionsObj(validatorOrOpts) ? validatorOrOpts.validators : validatorOrOpts) || null;\n}\n/**\n * Creates validator function by combining provided validators.\n */\n\n\nfunction coerceToValidator(validator) {\n  return Array.isArray(validator) ? composeValidators(validator) : validator || null;\n}\n/**\n * Gets async validators from either an options object or given validators.\n */\n\n\nfunction pickAsyncValidators(asyncValidator, validatorOrOpts) {\n  return (isOptionsObj(validatorOrOpts) ? validatorOrOpts.asyncValidators : asyncValidator) || null;\n}\n/**\n * Creates async validator function by combining provided async validators.\n */\n\n\nfunction coerceToAsyncValidator(asyncValidator) {\n  return Array.isArray(asyncValidator) ? composeAsyncValidators(asyncValidator) : asyncValidator || null;\n}\n\nfunction isOptionsObj(validatorOrOpts) {\n  return validatorOrOpts != null && !Array.isArray(validatorOrOpts) && _typeof(validatorOrOpts) === 'object';\n}\n/**\n * This is the base class for `FormControl`, `FormGroup`, and `FormArray`.\n *\n * It provides some of the shared behavior that all controls and groups of controls have, like\n * running validators, calculating status, and resetting state. It also defines the properties\n * that are shared between all sub-classes, like `value`, `valid`, and `dirty`. It shouldn't be\n * instantiated directly.\n *\n * @see [Forms Guide](/guide/forms)\n * @see [Reactive Forms Guide](/guide/reactive-forms)\n * @see [Dynamic Forms Guide](/guide/dynamic-form)\n *\n * @publicApi\n */\n\n\nvar AbstractControl = /*#__PURE__*/function () {\n  /**\n   * Initialize the AbstractControl instance.\n   *\n   * @param validators The function or array of functions that is used to determine the validity of\n   *     this control synchronously.\n   * @param asyncValidators The function or array of functions that is used to determine validity of\n   *     this control asynchronously.\n   */\n  function AbstractControl(validators, asyncValidators) {\n    _classCallCheck(this, AbstractControl);\n\n    /**\n     * Indicates that a control has its own pending asynchronous validation in progress.\n     *\n     * @internal\n     */\n    this._hasOwnPendingAsyncValidator = false;\n    /** @internal */\n\n    this._onCollectionChange = function () {};\n\n    this._parent = null;\n    /**\n     * A control is `pristine` if the user has not yet changed\n     * the value in the UI.\n     *\n     * @returns True if the user has not yet changed the value in the UI; compare `dirty`.\n     * Programmatic changes to a control's value do not mark it dirty.\n     */\n\n    this.pristine = true;\n    /**\n     * True if the control is marked as `touched`.\n     *\n     * A control is marked `touched` once the user has triggered\n     * a `blur` event on it.\n     */\n\n    this.touched = false;\n    /** @internal */\n\n    this._onDisabledChange = [];\n    this._rawValidators = validators;\n    this._rawAsyncValidators = asyncValidators;\n    this._composedValidatorFn = coerceToValidator(this._rawValidators);\n    this._composedAsyncValidatorFn = coerceToAsyncValidator(this._rawAsyncValidators);\n  }\n  /**\n   * The function that is used to determine the validity of this control synchronously.\n   */\n\n\n  _createClass(AbstractControl, [{\n    key: \"validator\",\n    get: function get() {\n      return this._composedValidatorFn;\n    },\n    set: function set(validatorFn) {\n      this._rawValidators = this._composedValidatorFn = validatorFn;\n    }\n    /**\n     * The function that is used to determine the validity of this control asynchronously.\n     */\n\n  }, {\n    key: \"asyncValidator\",\n    get: function get() {\n      return this._composedAsyncValidatorFn;\n    },\n    set: function set(asyncValidatorFn) {\n      this._rawAsyncValidators = this._composedAsyncValidatorFn = asyncValidatorFn;\n    }\n    /**\n     * The parent control.\n     */\n\n  }, {\n    key: \"parent\",\n    get: function get() {\n      return this._parent;\n    }\n    /**\n     * A control is `valid` when its `status` is `VALID`.\n     *\n     * @see {@link AbstractControl.status}\n     *\n     * @returns True if the control has passed all of its validation tests,\n     * false otherwise.\n     */\n\n  }, {\n    key: \"valid\",\n    get: function get() {\n      return this.status === VALID;\n    }\n    /**\n     * A control is `invalid` when its `status` is `INVALID`.\n     *\n     * @see {@link AbstractControl.status}\n     *\n     * @returns True if this control has failed one or more of its validation checks,\n     * false otherwise.\n     */\n\n  }, {\n    key: \"invalid\",\n    get: function get() {\n      return this.status === INVALID;\n    }\n    /**\n     * A control is `pending` when its `status` is `PENDING`.\n     *\n     * @see {@link AbstractControl.status}\n     *\n     * @returns True if this control is in the process of conducting a validation check,\n     * false otherwise.\n     */\n\n  }, {\n    key: \"pending\",\n    get: function get() {\n      return this.status == PENDING;\n    }\n    /**\n     * A control is `disabled` when its `status` is `DISABLED`.\n     *\n     * Disabled controls are exempt from validation checks and\n     * are not included in the aggregate value of their ancestor\n     * controls.\n     *\n     * @see {@link AbstractControl.status}\n     *\n     * @returns True if the control is disabled, false otherwise.\n     */\n\n  }, {\n    key: \"disabled\",\n    get: function get() {\n      return this.status === DISABLED;\n    }\n    /**\n     * A control is `enabled` as long as its `status` is not `DISABLED`.\n     *\n     * @returns True if the control has any status other than 'DISABLED',\n     * false if the status is 'DISABLED'.\n     *\n     * @see {@link AbstractControl.status}\n     *\n     */\n\n  }, {\n    key: \"enabled\",\n    get: function get() {\n      return this.status !== DISABLED;\n    }\n    /**\n     * A control is `dirty` if the user has changed the value\n     * in the UI.\n     *\n     * @returns True if the user has changed the value of this control in the UI; compare `pristine`.\n     * Programmatic changes to a control's value do not mark it dirty.\n     */\n\n  }, {\n    key: \"dirty\",\n    get: function get() {\n      return !this.pristine;\n    }\n    /**\n     * True if the control has not been marked as touched\n     *\n     * A control is `untouched` if the user has not yet triggered\n     * a `blur` event on it.\n     */\n\n  }, {\n    key: \"untouched\",\n    get: function get() {\n      return !this.touched;\n    }\n    /**\n     * Reports the update strategy of the `AbstractControl` (meaning\n     * the event on which the control updates itself).\n     * Possible values: `'change'` | `'blur'` | `'submit'`\n     * Default value: `'change'`\n     */\n\n  }, {\n    key: \"updateOn\",\n    get: function get() {\n      return this._updateOn ? this._updateOn : this.parent ? this.parent.updateOn : 'change';\n    }\n    /**\n     * Sets the synchronous validators that are active on this control.  Calling\n     * this overwrites any existing sync validators.\n     *\n     * When you add or remove a validator at run time, you must call\n     * `updateValueAndValidity()` for the new validation to take effect.\n     *\n     */\n\n  }, {\n    key: \"setValidators\",\n    value: function setValidators(newValidator) {\n      this._rawValidators = newValidator;\n      this._composedValidatorFn = coerceToValidator(newValidator);\n    }\n    /**\n     * Sets the async validators that are active on this control. Calling this\n     * overwrites any existing async validators.\n     *\n     * When you add or remove a validator at run time, you must call\n     * `updateValueAndValidity()` for the new validation to take effect.\n     *\n     */\n\n  }, {\n    key: \"setAsyncValidators\",\n    value: function setAsyncValidators(newValidator) {\n      this._rawAsyncValidators = newValidator;\n      this._composedAsyncValidatorFn = coerceToAsyncValidator(newValidator);\n    }\n    /**\n     * Empties out the sync validator list.\n     *\n     * When you add or remove a validator at run time, you must call\n     * `updateValueAndValidity()` for the new validation to take effect.\n     *\n     */\n\n  }, {\n    key: \"clearValidators\",\n    value: function clearValidators() {\n      this.validator = null;\n    }\n    /**\n     * Empties out the async validator list.\n     *\n     * When you add or remove a validator at run time, you must call\n     * `updateValueAndValidity()` for the new validation to take effect.\n     *\n     */\n\n  }, {\n    key: \"clearAsyncValidators\",\n    value: function clearAsyncValidators() {\n      this.asyncValidator = null;\n    }\n    /**\n     * Marks the control as `touched`. A control is touched by focus and\n     * blur events that do not change the value.\n     *\n     * @see `markAsUntouched()`\n     * @see `markAsDirty()`\n     * @see `markAsPristine()`\n     *\n     * @param opts Configuration options that determine how the control propagates changes\n     * and emits events after marking is applied.\n     * * `onlySelf`: When true, mark only this control. When false or not supplied,\n     * marks all direct ancestors. Default is false.\n     */\n\n  }, {\n    key: \"markAsTouched\",\n    value: function markAsTouched() {\n      var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n      this.touched = true;\n\n      if (this._parent && !opts.onlySelf) {\n        this._parent.markAsTouched(opts);\n      }\n    }\n    /**\n     * Marks the control and all its descendant controls as `touched`.\n     * @see `markAsTouched()`\n     */\n\n  }, {\n    key: \"markAllAsTouched\",\n    value: function markAllAsTouched() {\n      this.markAsTouched({\n        onlySelf: true\n      });\n\n      this._forEachChild(function (control) {\n        return control.markAllAsTouched();\n      });\n    }\n    /**\n     * Marks the control as `untouched`.\n     *\n     * If the control has any children, also marks all children as `untouched`\n     * and recalculates the `touched` status of all parent controls.\n     *\n     * @see `markAsTouched()`\n     * @see `markAsDirty()`\n     * @see `markAsPristine()`\n     *\n     * @param opts Configuration options that determine how the control propagates changes\n     * and emits events after the marking is applied.\n     * * `onlySelf`: When true, mark only this control. When false or not supplied,\n     * marks all direct ancestors. Default is false.\n     */\n\n  }, {\n    key: \"markAsUntouched\",\n    value: function markAsUntouched() {\n      var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n      this.touched = false;\n      this._pendingTouched = false;\n\n      this._forEachChild(function (control) {\n        control.markAsUntouched({\n          onlySelf: true\n        });\n      });\n\n      if (this._parent && !opts.onlySelf) {\n        this._parent._updateTouched(opts);\n      }\n    }\n    /**\n     * Marks the control as `dirty`. A control becomes dirty when\n     * the control's value is changed through the UI; compare `markAsTouched`.\n     *\n     * @see `markAsTouched()`\n     * @see `markAsUntouched()`\n     * @see `markAsPristine()`\n     *\n     * @param opts Configuration options that determine how the control propagates changes\n     * and emits events after marking is applied.\n     * * `onlySelf`: When true, mark only this control. When false or not supplied,\n     * marks all direct ancestors. Default is false.\n     */\n\n  }, {\n    key: \"markAsDirty\",\n    value: function markAsDirty() {\n      var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n      this.pristine = false;\n\n      if (this._parent && !opts.onlySelf) {\n        this._parent.markAsDirty(opts);\n      }\n    }\n    /**\n     * Marks the control as `pristine`.\n     *\n     * If the control has any children, marks all children as `pristine`,\n     * and recalculates the `pristine` status of all parent\n     * controls.\n     *\n     * @see `markAsTouched()`\n     * @see `markAsUntouched()`\n     * @see `markAsDirty()`\n     *\n     * @param opts Configuration options that determine how the control emits events after\n     * marking is applied.\n     * * `onlySelf`: When true, mark only this control. When false or not supplied,\n     * marks all direct ancestors. Default is false.\n     */\n\n  }, {\n    key: \"markAsPristine\",\n    value: function markAsPristine() {\n      var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n      this.pristine = true;\n      this._pendingDirty = false;\n\n      this._forEachChild(function (control) {\n        control.markAsPristine({\n          onlySelf: true\n        });\n      });\n\n      if (this._parent && !opts.onlySelf) {\n        this._parent._updatePristine(opts);\n      }\n    }\n    /**\n     * Marks the control as `pending`.\n     *\n     * A control is pending while the control performs async validation.\n     *\n     * @see {@link AbstractControl.status}\n     *\n     * @param opts Configuration options that determine how the control propagates changes and\n     * emits events after marking is applied.\n     * * `onlySelf`: When true, mark only this control. When false or not supplied,\n     * marks all direct ancestors. Default is false.\n     * * `emitEvent`: When true or not supplied (the default), the `statusChanges`\n     * observable emits an event with the latest status the control is marked pending.\n     * When false, no events are emitted.\n     *\n     */\n\n  }, {\n    key: \"markAsPending\",\n    value: function markAsPending() {\n      var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n      this.status = PENDING;\n\n      if (opts.emitEvent !== false) {\n        this.statusChanges.emit(this.status);\n      }\n\n      if (this._parent && !opts.onlySelf) {\n        this._parent.markAsPending(opts);\n      }\n    }\n    /**\n     * Disables the control. This means the control is exempt from validation checks and\n     * excluded from the aggregate value of any parent. Its status is `DISABLED`.\n     *\n     * If the control has children, all children are also disabled.\n     *\n     * @see {@link AbstractControl.status}\n     *\n     * @param opts Configuration options that determine how the control propagates\n     * changes and emits events after the control is disabled.\n     * * `onlySelf`: When true, mark only this control. When false or not supplied,\n     * marks all direct ancestors. Default is false.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges`\n     * observables emit events with the latest status and value when the control is disabled.\n     * When false, no events are emitted.\n     */\n\n  }, {\n    key: \"disable\",\n    value: function disable() {\n      var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n      // If parent has been marked artificially dirty we don't want to re-calculate the\n      // parent's dirtiness based on the children.\n      var skipPristineCheck = this._parentMarkedDirty(opts.onlySelf);\n\n      this.status = DISABLED;\n      this.errors = null;\n\n      this._forEachChild(function (control) {\n        control.disable(Object.assign(Object.assign({}, opts), {\n          onlySelf: true\n        }));\n      });\n\n      this._updateValue();\n\n      if (opts.emitEvent !== false) {\n        this.valueChanges.emit(this.value);\n        this.statusChanges.emit(this.status);\n      }\n\n      this._updateAncestors(Object.assign(Object.assign({}, opts), {\n        skipPristineCheck: skipPristineCheck\n      }));\n\n      this._onDisabledChange.forEach(function (changeFn) {\n        return changeFn(true);\n      });\n    }\n    /**\n     * Enables the control. This means the control is included in validation checks and\n     * the aggregate value of its parent. Its status recalculates based on its value and\n     * its validators.\n     *\n     * By default, if the control has children, all children are enabled.\n     *\n     * @see {@link AbstractControl.status}\n     *\n     * @param opts Configure options that control how the control propagates changes and\n     * emits events when marked as untouched\n     * * `onlySelf`: When true, mark only this control. When false or not supplied,\n     * marks all direct ancestors. Default is false.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges`\n     * observables emit events with the latest status and value when the control is enabled.\n     * When false, no events are emitted.\n     */\n\n  }, {\n    key: \"enable\",\n    value: function enable() {\n      var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n      // If parent has been marked artificially dirty we don't want to re-calculate the\n      // parent's dirtiness based on the children.\n      var skipPristineCheck = this._parentMarkedDirty(opts.onlySelf);\n\n      this.status = VALID;\n\n      this._forEachChild(function (control) {\n        control.enable(Object.assign(Object.assign({}, opts), {\n          onlySelf: true\n        }));\n      });\n\n      this.updateValueAndValidity({\n        onlySelf: true,\n        emitEvent: opts.emitEvent\n      });\n\n      this._updateAncestors(Object.assign(Object.assign({}, opts), {\n        skipPristineCheck: skipPristineCheck\n      }));\n\n      this._onDisabledChange.forEach(function (changeFn) {\n        return changeFn(false);\n      });\n    }\n  }, {\n    key: \"_updateAncestors\",\n    value: function _updateAncestors(opts) {\n      if (this._parent && !opts.onlySelf) {\n        this._parent.updateValueAndValidity(opts);\n\n        if (!opts.skipPristineCheck) {\n          this._parent._updatePristine();\n        }\n\n        this._parent._updateTouched();\n      }\n    }\n    /**\n     * @param parent Sets the parent of the control\n     */\n\n  }, {\n    key: \"setParent\",\n    value: function setParent(parent) {\n      this._parent = parent;\n    }\n    /**\n     * Recalculates the value and validation status of the control.\n     *\n     * By default, it also updates the value and validity of its ancestors.\n     *\n     * @param opts Configuration options determine how the control propagates changes and emits events\n     * after updates and validity checks are applied.\n     * * `onlySelf`: When true, only update this control. When false or not supplied,\n     * update all direct ancestors. Default is false.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges`\n     * observables emit events with the latest status and value when the control is updated.\n     * When false, no events are emitted.\n     */\n\n  }, {\n    key: \"updateValueAndValidity\",\n    value: function updateValueAndValidity() {\n      var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n      this._setInitialStatus();\n\n      this._updateValue();\n\n      if (this.enabled) {\n        this._cancelExistingSubscription();\n\n        this.errors = this._runValidator();\n        this.status = this._calculateStatus();\n\n        if (this.status === VALID || this.status === PENDING) {\n          this._runAsyncValidator(opts.emitEvent);\n        }\n      }\n\n      if (opts.emitEvent !== false) {\n        this.valueChanges.emit(this.value);\n        this.statusChanges.emit(this.status);\n      }\n\n      if (this._parent && !opts.onlySelf) {\n        this._parent.updateValueAndValidity(opts);\n      }\n    }\n    /** @internal */\n\n  }, {\n    key: \"_updateTreeValidity\",\n    value: function _updateTreeValidity() {\n      var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {\n        emitEvent: true\n      };\n\n      this._forEachChild(function (ctrl) {\n        return ctrl._updateTreeValidity(opts);\n      });\n\n      this.updateValueAndValidity({\n        onlySelf: true,\n        emitEvent: opts.emitEvent\n      });\n    }\n  }, {\n    key: \"_setInitialStatus\",\n    value: function _setInitialStatus() {\n      this.status = this._allControlsDisabled() ? DISABLED : VALID;\n    }\n  }, {\n    key: \"_runValidator\",\n    value: function _runValidator() {\n      return this.validator ? this.validator(this) : null;\n    }\n  }, {\n    key: \"_runAsyncValidator\",\n    value: function _runAsyncValidator(emitEvent) {\n      var _this7 = this;\n\n      if (this.asyncValidator) {\n        this.status = PENDING;\n        this._hasOwnPendingAsyncValidator = true;\n        var obs = toObservable(this.asyncValidator(this));\n        this._asyncValidationSubscription = obs.subscribe(function (errors) {\n          _this7._hasOwnPendingAsyncValidator = false; // This will trigger the recalculation of the validation status, which depends on\n          // the state of the asynchronous validation (whether it is in progress or not). So, it is\n          // necessary that we have updated the `_hasOwnPendingAsyncValidator` boolean flag first.\n\n          _this7.setErrors(errors, {\n            emitEvent: emitEvent\n          });\n        });\n      }\n    }\n  }, {\n    key: \"_cancelExistingSubscription\",\n    value: function _cancelExistingSubscription() {\n      if (this._asyncValidationSubscription) {\n        this._asyncValidationSubscription.unsubscribe();\n\n        this._hasOwnPendingAsyncValidator = false;\n      }\n    }\n    /**\n     * Sets errors on a form control when running validations manually, rather than automatically.\n     *\n     * Calling `setErrors` also updates the validity of the parent control.\n     *\n     * @usageNotes\n     *\n     * ### Manually set the errors for a control\n     *\n     * ```\n     * const login = new FormControl('someLogin');\n     * login.setErrors({\n     *   notUnique: true\n     * });\n     *\n     * expect(login.valid).toEqual(false);\n     * expect(login.errors).toEqual({ notUnique: true });\n     *\n     * login.setValue('someOtherLogin');\n     *\n     * expect(login.valid).toEqual(true);\n     * ```\n     */\n\n  }, {\n    key: \"setErrors\",\n    value: function setErrors(errors) {\n      var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n      this.errors = errors;\n\n      this._updateControlsErrors(opts.emitEvent !== false);\n    }\n    /**\n     * Retrieves a child control given the control's name or path.\n     *\n     * @param path A dot-delimited string or array of string/number values that define the path to the\n     * control.\n     *\n     * @usageNotes\n     * ### Retrieve a nested control\n     *\n     * For example, to get a `name` control nested within a `person` sub-group:\n     *\n     * * `this.form.get('person.name');`\n     *\n     * -OR-\n     *\n     * * `this.form.get(['person', 'name']);`\n     */\n\n  }, {\n    key: \"get\",\n    value: function get(path) {\n      return _find(this, path, '.');\n    }\n    /**\n     * @description\n     * Reports error data for the control with the given path.\n     *\n     * @param errorCode The code of the error to check\n     * @param path A list of control names that designates how to move from the current control\n     * to the control that should be queried for errors.\n     *\n     * @usageNotes\n     * For example, for the following `FormGroup`:\n     *\n     * ```\n     * form = new FormGroup({\n     *   address: new FormGroup({ street: new FormControl() })\n     * });\n     * ```\n     *\n     * The path to the 'street' control from the root form would be 'address' -> 'street'.\n     *\n     * It can be provided to this method in one of two formats:\n     *\n     * 1. An array of string control names, e.g. `['address', 'street']`\n     * 1. A period-delimited list of control names in one string, e.g. `'address.street'`\n     *\n     * @returns error data for that particular error. If the control or error is not present,\n     * null is returned.\n     */\n\n  }, {\n    key: \"getError\",\n    value: function getError(errorCode, path) {\n      var control = path ? this.get(path) : this;\n      return control && control.errors ? control.errors[errorCode] : null;\n    }\n    /**\n     * @description\n     * Reports whether the control with the given path has the error specified.\n     *\n     * @param errorCode The code of the error to check\n     * @param path A list of control names that designates how to move from the current control\n     * to the control that should be queried for errors.\n     *\n     * @usageNotes\n     * For example, for the following `FormGroup`:\n     *\n     * ```\n     * form = new FormGroup({\n     *   address: new FormGroup({ street: new FormControl() })\n     * });\n     * ```\n     *\n     * The path to the 'street' control from the root form would be 'address' -> 'street'.\n     *\n     * It can be provided to this method in one of two formats:\n     *\n     * 1. An array of string control names, e.g. `['address', 'street']`\n     * 1. A period-delimited list of control names in one string, e.g. `'address.street'`\n     *\n     * If no path is given, this method checks for the error on the current control.\n     *\n     * @returns whether the given error is present in the control at the given path.\n     *\n     * If the control is not present, false is returned.\n     */\n\n  }, {\n    key: \"hasError\",\n    value: function hasError(errorCode, path) {\n      return !!this.getError(errorCode, path);\n    }\n    /**\n     * Retrieves the top-level ancestor of this control.\n     */\n\n  }, {\n    key: \"root\",\n    get: function get() {\n      var x = this;\n\n      while (x._parent) {\n        x = x._parent;\n      }\n\n      return x;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_updateControlsErrors\",\n    value: function _updateControlsErrors(emitEvent) {\n      this.status = this._calculateStatus();\n\n      if (emitEvent) {\n        this.statusChanges.emit(this.status);\n      }\n\n      if (this._parent) {\n        this._parent._updateControlsErrors(emitEvent);\n      }\n    }\n    /** @internal */\n\n  }, {\n    key: \"_initObservables\",\n    value: function _initObservables() {\n      this.valueChanges = new EventEmitter();\n      this.statusChanges = new EventEmitter();\n    }\n  }, {\n    key: \"_calculateStatus\",\n    value: function _calculateStatus() {\n      if (this._allControlsDisabled()) return DISABLED;\n      if (this.errors) return INVALID;\n      if (this._hasOwnPendingAsyncValidator || this._anyControlsHaveStatus(PENDING)) return PENDING;\n      if (this._anyControlsHaveStatus(INVALID)) return INVALID;\n      return VALID;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_anyControlsHaveStatus\",\n    value: function _anyControlsHaveStatus(status) {\n      return this._anyControls(function (control) {\n        return control.status === status;\n      });\n    }\n    /** @internal */\n\n  }, {\n    key: \"_anyControlsDirty\",\n    value: function _anyControlsDirty() {\n      return this._anyControls(function (control) {\n        return control.dirty;\n      });\n    }\n    /** @internal */\n\n  }, {\n    key: \"_anyControlsTouched\",\n    value: function _anyControlsTouched() {\n      return this._anyControls(function (control) {\n        return control.touched;\n      });\n    }\n    /** @internal */\n\n  }, {\n    key: \"_updatePristine\",\n    value: function _updatePristine() {\n      var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n      this.pristine = !this._anyControlsDirty();\n\n      if (this._parent && !opts.onlySelf) {\n        this._parent._updatePristine(opts);\n      }\n    }\n    /** @internal */\n\n  }, {\n    key: \"_updateTouched\",\n    value: function _updateTouched() {\n      var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n      this.touched = this._anyControlsTouched();\n\n      if (this._parent && !opts.onlySelf) {\n        this._parent._updateTouched(opts);\n      }\n    }\n    /** @internal */\n\n  }, {\n    key: \"_isBoxedValue\",\n    value: function _isBoxedValue(formState) {\n      return _typeof(formState) === 'object' && formState !== null && Object.keys(formState).length === 2 && 'value' in formState && 'disabled' in formState;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_registerOnCollectionChange\",\n    value: function _registerOnCollectionChange(fn) {\n      this._onCollectionChange = fn;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_setUpdateStrategy\",\n    value: function _setUpdateStrategy(opts) {\n      if (isOptionsObj(opts) && opts.updateOn != null) {\n        this._updateOn = opts.updateOn;\n      }\n    }\n    /**\n     * Check to see if parent has been marked artificially dirty.\n     *\n     * @internal\n     */\n\n  }, {\n    key: \"_parentMarkedDirty\",\n    value: function _parentMarkedDirty(onlySelf) {\n      var parentDirty = this._parent && this._parent.dirty;\n      return !onlySelf && !!parentDirty && !this._parent._anyControlsDirty();\n    }\n  }]);\n\n  return AbstractControl;\n}();\n/**\n * Tracks the value and validation status of an individual form control.\n *\n * This is one of the three fundamental building blocks of Angular forms, along with\n * `FormGroup` and `FormArray`. It extends the `AbstractControl` class that\n * implements most of the base functionality for accessing the value, validation status,\n * user interactions and events. See [usage examples below](#usage-notes).\n *\n * @see `AbstractControl`\n * @see [Reactive Forms Guide](guide/reactive-forms)\n * @see [Usage Notes](#usage-notes)\n *\n * @usageNotes\n *\n * ### Initializing Form Controls\n *\n * Instantiate a `FormControl`, with an initial value.\n *\n * ```ts\n * const control = new FormControl('some value');\n * console.log(control.value);     // 'some value'\n *```\n *\n * The following example initializes the control with a form state object. The `value`\n * and `disabled` keys are required in this case.\n *\n * ```ts\n * const control = new FormControl({ value: 'n/a', disabled: true });\n * console.log(control.value);     // 'n/a'\n * console.log(control.status);    // 'DISABLED'\n * ```\n *\n * The following example initializes the control with a sync validator.\n *\n * ```ts\n * const control = new FormControl('', Validators.required);\n * console.log(control.value);      // ''\n * console.log(control.status);     // 'INVALID'\n * ```\n *\n * The following example initializes the control using an options object.\n *\n * ```ts\n * const control = new FormControl('', {\n *    validators: Validators.required,\n *    asyncValidators: myAsyncValidator\n * });\n * ```\n *\n * ### Configure the control to update on a blur event\n *\n * Set the `updateOn` option to `'blur'` to update on the blur `event`.\n *\n * ```ts\n * const control = new FormControl('', { updateOn: 'blur' });\n * ```\n *\n * ### Configure the control to update on a submit event\n *\n * Set the `updateOn` option to `'submit'` to update on a submit `event`.\n *\n * ```ts\n * const control = new FormControl('', { updateOn: 'submit' });\n * ```\n *\n * ### Reset the control back to an initial value\n *\n * You reset to a specific form state by passing through a standalone\n * value or a form state object that contains both a value and a disabled state\n * (these are the only two properties that cannot be calculated).\n *\n * ```ts\n * const control = new FormControl('Nancy');\n *\n * console.log(control.value); // 'Nancy'\n *\n * control.reset('Drew');\n *\n * console.log(control.value); // 'Drew'\n * ```\n *\n * ### Reset the control back to an initial value and disabled\n *\n * ```\n * const control = new FormControl('Nancy');\n *\n * console.log(control.value); // 'Nancy'\n * console.log(control.status); // 'VALID'\n *\n * control.reset({ value: 'Drew', disabled: true });\n *\n * console.log(control.value); // 'Drew'\n * console.log(control.status); // 'DISABLED'\n * ```\n *\n * @publicApi\n */\n\n\nvar FormControl = /*#__PURE__*/function (_AbstractControl) {\n  _inherits(FormControl, _AbstractControl);\n\n  var _super5 = _createSuper(FormControl);\n\n  /**\n   * Creates a new `FormControl` instance.\n   *\n   * @param formState Initializes the control with an initial value,\n   * or an object that defines the initial value and disabled state.\n   *\n   * @param validatorOrOpts A synchronous validator function, or an array of\n   * such functions, or an `AbstractControlOptions` object that contains validation functions\n   * and a validation trigger.\n   *\n   * @param asyncValidator A single async validator or array of async validator functions\n   *\n   */\n  function FormControl() {\n    var _this8;\n\n    var formState = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;\n    var validatorOrOpts = arguments.length > 1 ? arguments[1] : undefined;\n    var asyncValidator = arguments.length > 2 ? arguments[2] : undefined;\n\n    _classCallCheck(this, FormControl);\n\n    _this8 = _super5.call(this, pickValidators(validatorOrOpts), pickAsyncValidators(asyncValidator, validatorOrOpts));\n    /** @internal */\n\n    _this8._onChange = [];\n\n    _this8._applyFormState(formState);\n\n    _this8._setUpdateStrategy(validatorOrOpts);\n\n    _this8._initObservables();\n\n    _this8.updateValueAndValidity({\n      onlySelf: true,\n      // If `asyncValidator` is present, it will trigger control status change from `PENDING` to\n      // `VALID` or `INVALID`.\n      // The status should be broadcasted via the `statusChanges` observable, so we set `emitEvent`\n      // to `true` to allow that during the control creation process.\n      emitEvent: !!asyncValidator\n    });\n\n    return _this8;\n  }\n  /**\n   * Sets a new value for the form control.\n   *\n   * @param value The new value for the control.\n   * @param options Configuration options that determine how the control propagates changes\n   * and emits events when the value changes.\n   * The configuration options are passed to the {@link AbstractControl#updateValueAndValidity\n   * updateValueAndValidity} method.\n   *\n   * * `onlySelf`: When true, each change only affects this control, and not its parent. Default is\n   * false.\n   * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n   * `valueChanges`\n   * observables emit events with the latest status and value when the control value is updated.\n   * When false, no events are emitted.\n   * * `emitModelToViewChange`: When true or not supplied  (the default), each change triggers an\n   * `onChange` event to\n   * update the view.\n   * * `emitViewToModelChange`: When true or not supplied (the default), each change triggers an\n   * `ngModelChange`\n   * event to update the model.\n   *\n   */\n\n\n  _createClass(FormControl, [{\n    key: \"setValue\",\n    value: function setValue(value) {\n      var _this9 = this;\n\n      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n      this.value = this._pendingValue = value;\n\n      if (this._onChange.length && options.emitModelToViewChange !== false) {\n        this._onChange.forEach(function (changeFn) {\n          return changeFn(_this9.value, options.emitViewToModelChange !== false);\n        });\n      }\n\n      this.updateValueAndValidity(options);\n    }\n    /**\n     * Patches the value of a control.\n     *\n     * This function is functionally the same as {@link FormControl#setValue setValue} at this level.\n     * It exists for symmetry with {@link FormGroup#patchValue patchValue} on `FormGroups` and\n     * `FormArrays`, where it does behave differently.\n     *\n     * @see `setValue` for options\n     */\n\n  }, {\n    key: \"patchValue\",\n    value: function patchValue(value) {\n      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n      this.setValue(value, options);\n    }\n    /**\n     * Resets the form control, marking it `pristine` and `untouched`, and setting\n     * the value to null.\n     *\n     * @param formState Resets the control with an initial value,\n     * or an object that defines the initial value and disabled state.\n     *\n     * @param options Configuration options that determine how the control propagates changes\n     * and emits events after the value changes.\n     *\n     * * `onlySelf`: When true, each change only affects this control, and not its parent. Default is\n     * false.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges`\n     * observables emit events with the latest status and value when the control is reset.\n     * When false, no events are emitted.\n     *\n     */\n\n  }, {\n    key: \"reset\",\n    value: function reset() {\n      var formState = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;\n      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n      this._applyFormState(formState);\n\n      this.markAsPristine(options);\n      this.markAsUntouched(options);\n      this.setValue(this.value, options);\n      this._pendingChange = false;\n    }\n    /**\n     * @internal\n     */\n\n  }, {\n    key: \"_updateValue\",\n    value: function _updateValue() {}\n    /**\n     * @internal\n     */\n\n  }, {\n    key: \"_anyControls\",\n    value: function _anyControls(condition) {\n      return false;\n    }\n    /**\n     * @internal\n     */\n\n  }, {\n    key: \"_allControlsDisabled\",\n    value: function _allControlsDisabled() {\n      return this.disabled;\n    }\n    /**\n     * Register a listener for change events.\n     *\n     * @param fn The method that is called when the value changes\n     */\n\n  }, {\n    key: \"registerOnChange\",\n    value: function registerOnChange(fn) {\n      this._onChange.push(fn);\n    }\n    /**\n     * Internal function to unregister a change events listener.\n     * @internal\n     */\n\n  }, {\n    key: \"_unregisterOnChange\",\n    value: function _unregisterOnChange(fn) {\n      removeListItem(this._onChange, fn);\n    }\n    /**\n     * Register a listener for disabled events.\n     *\n     * @param fn The method that is called when the disabled status changes.\n     */\n\n  }, {\n    key: \"registerOnDisabledChange\",\n    value: function registerOnDisabledChange(fn) {\n      this._onDisabledChange.push(fn);\n    }\n    /**\n     * Internal function to unregister a disabled event listener.\n     * @internal\n     */\n\n  }, {\n    key: \"_unregisterOnDisabledChange\",\n    value: function _unregisterOnDisabledChange(fn) {\n      removeListItem(this._onDisabledChange, fn);\n    }\n    /**\n     * @internal\n     */\n\n  }, {\n    key: \"_forEachChild\",\n    value: function _forEachChild(cb) {}\n    /** @internal */\n\n  }, {\n    key: \"_syncPendingControls\",\n    value: function _syncPendingControls() {\n      if (this.updateOn === 'submit') {\n        if (this._pendingDirty) this.markAsDirty();\n        if (this._pendingTouched) this.markAsTouched();\n\n        if (this._pendingChange) {\n          this.setValue(this._pendingValue, {\n            onlySelf: true,\n            emitModelToViewChange: false\n          });\n          return true;\n        }\n      }\n\n      return false;\n    }\n  }, {\n    key: \"_applyFormState\",\n    value: function _applyFormState(formState) {\n      if (this._isBoxedValue(formState)) {\n        this.value = this._pendingValue = formState.value;\n        formState.disabled ? this.disable({\n          onlySelf: true,\n          emitEvent: false\n        }) : this.enable({\n          onlySelf: true,\n          emitEvent: false\n        });\n      } else {\n        this.value = this._pendingValue = formState;\n      }\n    }\n  }]);\n\n  return FormControl;\n}(AbstractControl);\n/**\n * Tracks the value and validity state of a group of `FormControl` instances.\n *\n * A `FormGroup` aggregates the values of each child `FormControl` into one object,\n * with each control name as the key.  It calculates its status by reducing the status values\n * of its children. For example, if one of the controls in a group is invalid, the entire\n * group becomes invalid.\n *\n * `FormGroup` is one of the three fundamental building blocks used to define forms in Angular,\n * along with `FormControl` and `FormArray`.\n *\n * When instantiating a `FormGroup`, pass in a collection of child controls as the first\n * argument. The key for each child registers the name for the control.\n *\n * @usageNotes\n *\n * ### Create a form group with 2 controls\n *\n * ```\n * const form = new FormGroup({\n *   first: new FormControl('Nancy', Validators.minLength(2)),\n *   last: new FormControl('Drew'),\n * });\n *\n * console.log(form.value);   // {first: 'Nancy', last; 'Drew'}\n * console.log(form.status);  // 'VALID'\n * ```\n *\n * ### Create a form group with a group-level validator\n *\n * You include group-level validators as the second arg, or group-level async\n * validators as the third arg. These come in handy when you want to perform validation\n * that considers the value of more than one child control.\n *\n * ```\n * const form = new FormGroup({\n *   password: new FormControl('', Validators.minLength(2)),\n *   passwordConfirm: new FormControl('', Validators.minLength(2)),\n * }, passwordMatchValidator);\n *\n *\n * function passwordMatchValidator(g: FormGroup) {\n *    return g.get('password').value === g.get('passwordConfirm').value\n *       ? null : {'mismatch': true};\n * }\n * ```\n *\n * Like `FormControl` instances, you choose to pass in\n * validators and async validators as part of an options object.\n *\n * ```\n * const form = new FormGroup({\n *   password: new FormControl('')\n *   passwordConfirm: new FormControl('')\n * }, { validators: passwordMatchValidator, asyncValidators: otherValidator });\n * ```\n *\n * ### Set the updateOn property for all controls in a form group\n *\n * The options object is used to set a default value for each child\n * control's `updateOn` property. If you set `updateOn` to `'blur'` at the\n * group level, all child controls default to 'blur', unless the child\n * has explicitly specified a different `updateOn` value.\n *\n * ```ts\n * const c = new FormGroup({\n *   one: new FormControl()\n * }, { updateOn: 'blur' });\n * ```\n *\n * @publicApi\n */\n\n\nvar FormGroup = /*#__PURE__*/function (_AbstractControl2) {\n  _inherits(FormGroup, _AbstractControl2);\n\n  var _super6 = _createSuper(FormGroup);\n\n  /**\n   * Creates a new `FormGroup` instance.\n   *\n   * @param controls A collection of child controls. The key for each child is the name\n   * under which it is registered.\n   *\n   * @param validatorOrOpts A synchronous validator function, or an array of\n   * such functions, or an `AbstractControlOptions` object that contains validation functions\n   * and a validation trigger.\n   *\n   * @param asyncValidator A single async validator or array of async validator functions\n   *\n   */\n  function FormGroup(controls, validatorOrOpts, asyncValidator) {\n    var _this10;\n\n    _classCallCheck(this, FormGroup);\n\n    _this10 = _super6.call(this, pickValidators(validatorOrOpts), pickAsyncValidators(asyncValidator, validatorOrOpts));\n    _this10.controls = controls;\n\n    _this10._initObservables();\n\n    _this10._setUpdateStrategy(validatorOrOpts);\n\n    _this10._setUpControls();\n\n    _this10.updateValueAndValidity({\n      onlySelf: true,\n      // If `asyncValidator` is present, it will trigger control status change from `PENDING` to\n      // `VALID` or `INVALID`. The status should be broadcasted via the `statusChanges` observable,\n      // so we set `emitEvent` to `true` to allow that during the control creation process.\n      emitEvent: !!asyncValidator\n    });\n\n    return _this10;\n  }\n  /**\n   * Registers a control with the group's list of controls.\n   *\n   * This method does not update the value or validity of the control.\n   * Use {@link FormGroup#addControl addControl} instead.\n   *\n   * @param name The control name to register in the collection\n   * @param control Provides the control for the given name\n   */\n\n\n  _createClass(FormGroup, [{\n    key: \"registerControl\",\n    value: function registerControl(name, control) {\n      if (this.controls[name]) return this.controls[name];\n      this.controls[name] = control;\n      control.setParent(this);\n\n      control._registerOnCollectionChange(this._onCollectionChange);\n\n      return control;\n    }\n    /**\n     * Add a control to this group.\n     *\n     * This method also updates the value and validity of the control.\n     *\n     * @param name The control name to add to the collection\n     * @param control Provides the control for the given name\n     */\n\n  }, {\n    key: \"addControl\",\n    value: function addControl(name, control) {\n      this.registerControl(name, control);\n      this.updateValueAndValidity();\n\n      this._onCollectionChange();\n    }\n    /**\n     * Remove a control from this group.\n     *\n     * @param name The control name to remove from the collection\n     */\n\n  }, {\n    key: \"removeControl\",\n    value: function removeControl(name) {\n      if (this.controls[name]) this.controls[name]._registerOnCollectionChange(function () {});\n      delete this.controls[name];\n      this.updateValueAndValidity();\n\n      this._onCollectionChange();\n    }\n    /**\n     * Replace an existing control.\n     *\n     * @param name The control name to replace in the collection\n     * @param control Provides the control for the given name\n     */\n\n  }, {\n    key: \"setControl\",\n    value: function setControl(name, control) {\n      if (this.controls[name]) this.controls[name]._registerOnCollectionChange(function () {});\n      delete this.controls[name];\n      if (control) this.registerControl(name, control);\n      this.updateValueAndValidity();\n\n      this._onCollectionChange();\n    }\n    /**\n     * Check whether there is an enabled control with the given name in the group.\n     *\n     * Reports false for disabled controls. If you'd like to check for existence in the group\n     * only, use {@link AbstractControl#get get} instead.\n     *\n     * @param controlName The control name to check for existence in the collection\n     *\n     * @returns false for disabled controls, true otherwise.\n     */\n\n  }, {\n    key: \"contains\",\n    value: function contains(controlName) {\n      return this.controls.hasOwnProperty(controlName) && this.controls[controlName].enabled;\n    }\n    /**\n     * Sets the value of the `FormGroup`. It accepts an object that matches\n     * the structure of the group, with control names as keys.\n     *\n     * @usageNotes\n     * ### Set the complete value for the form group\n     *\n     * ```\n     * const form = new FormGroup({\n     *   first: new FormControl(),\n     *   last: new FormControl()\n     * });\n     *\n     * console.log(form.value);   // {first: null, last: null}\n     *\n     * form.setValue({first: 'Nancy', last: 'Drew'});\n     * console.log(form.value);   // {first: 'Nancy', last: 'Drew'}\n     * ```\n     *\n     * @throws When strict checks fail, such as setting the value of a control\n     * that doesn't exist or if you exclude a value of a control that does exist.\n     *\n     * @param value The new value for the control that matches the structure of the group.\n     * @param options Configuration options that determine how the control propagates changes\n     * and emits events after the value changes.\n     * The configuration options are passed to the {@link AbstractControl#updateValueAndValidity\n     * updateValueAndValidity} method.\n     *\n     * * `onlySelf`: When true, each change only affects this control, and not its parent. Default is\n     * false.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges`\n     * observables emit events with the latest status and value when the control value is updated.\n     * When false, no events are emitted.\n     */\n\n  }, {\n    key: \"setValue\",\n    value: function setValue(value) {\n      var _this11 = this;\n\n      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n      this._checkAllValuesPresent(value);\n\n      Object.keys(value).forEach(function (name) {\n        _this11._throwIfControlMissing(name);\n\n        _this11.controls[name].setValue(value[name], {\n          onlySelf: true,\n          emitEvent: options.emitEvent\n        });\n      });\n      this.updateValueAndValidity(options);\n    }\n    /**\n     * Patches the value of the `FormGroup`. It accepts an object with control\n     * names as keys, and does its best to match the values to the correct controls\n     * in the group.\n     *\n     * It accepts both super-sets and sub-sets of the group without throwing an error.\n     *\n     * @usageNotes\n     * ### Patch the value for a form group\n     *\n     * ```\n     * const form = new FormGroup({\n     *    first: new FormControl(),\n     *    last: new FormControl()\n     * });\n     * console.log(form.value);   // {first: null, last: null}\n     *\n     * form.patchValue({first: 'Nancy'});\n     * console.log(form.value);   // {first: 'Nancy', last: null}\n     * ```\n     *\n     * @param value The object that matches the structure of the group.\n     * @param options Configuration options that determine how the control propagates changes and\n     * emits events after the value is patched.\n     * * `onlySelf`: When true, each change only affects this control and not its parent. Default is\n     * true.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges`\n     * observables emit events with the latest status and value when the control value is updated.\n     * When false, no events are emitted.\n     * The configuration options are passed to the {@link AbstractControl#updateValueAndValidity\n     * updateValueAndValidity} method.\n     */\n\n  }, {\n    key: \"patchValue\",\n    value: function patchValue(value) {\n      var _this12 = this;\n\n      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n      Object.keys(value).forEach(function (name) {\n        if (_this12.controls[name]) {\n          _this12.controls[name].patchValue(value[name], {\n            onlySelf: true,\n            emitEvent: options.emitEvent\n          });\n        }\n      });\n      this.updateValueAndValidity(options);\n    }\n    /**\n     * Resets the `FormGroup`, marks all descendants `pristine` and `untouched` and sets\n     * the value of all descendants to null.\n     *\n     * You reset to a specific form state by passing in a map of states\n     * that matches the structure of your form, with control names as keys. The state\n     * is a standalone value or a form state object with both a value and a disabled\n     * status.\n     *\n     * @param value Resets the control with an initial value,\n     * or an object that defines the initial value and disabled state.\n     *\n     * @param options Configuration options that determine how the control propagates changes\n     * and emits events when the group is reset.\n     * * `onlySelf`: When true, each change only affects this control, and not its parent. Default is\n     * false.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges`\n     * observables emit events with the latest status and value when the control is reset.\n     * When false, no events are emitted.\n     * The configuration options are passed to the {@link AbstractControl#updateValueAndValidity\n     * updateValueAndValidity} method.\n     *\n     * @usageNotes\n     *\n     * ### Reset the form group values\n     *\n     * ```ts\n     * const form = new FormGroup({\n     *   first: new FormControl('first name'),\n     *   last: new FormControl('last name')\n     * });\n     *\n     * console.log(form.value);  // {first: 'first name', last: 'last name'}\n     *\n     * form.reset({ first: 'name', last: 'last name' });\n     *\n     * console.log(form.value);  // {first: 'name', last: 'last name'}\n     * ```\n     *\n     * ### Reset the form group values and disabled status\n     *\n     * ```\n     * const form = new FormGroup({\n     *   first: new FormControl('first name'),\n     *   last: new FormControl('last name')\n     * });\n     *\n     * form.reset({\n     *   first: {value: 'name', disabled: true},\n     *   last: 'last'\n     * });\n     *\n     * console.log(this.form.value);  // {first: 'name', last: 'last name'}\n     * console.log(this.form.get('first').status);  // 'DISABLED'\n     * ```\n     */\n\n  }, {\n    key: \"reset\",\n    value: function reset() {\n      var value = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n      this._forEachChild(function (control, name) {\n        control.reset(value[name], {\n          onlySelf: true,\n          emitEvent: options.emitEvent\n        });\n      });\n\n      this._updatePristine(options);\n\n      this._updateTouched(options);\n\n      this.updateValueAndValidity(options);\n    }\n    /**\n     * The aggregate value of the `FormGroup`, including any disabled controls.\n     *\n     * Retrieves all values regardless of disabled status.\n     * The `value` property is the best way to get the value of the group, because\n     * it excludes disabled controls in the `FormGroup`.\n     */\n\n  }, {\n    key: \"getRawValue\",\n    value: function getRawValue() {\n      return this._reduceChildren({}, function (acc, control, name) {\n        acc[name] = control instanceof FormControl ? control.value : control.getRawValue();\n        return acc;\n      });\n    }\n    /** @internal */\n\n  }, {\n    key: \"_syncPendingControls\",\n    value: function _syncPendingControls() {\n      var subtreeUpdated = this._reduceChildren(false, function (updated, child) {\n        return child._syncPendingControls() ? true : updated;\n      });\n\n      if (subtreeUpdated) this.updateValueAndValidity({\n        onlySelf: true\n      });\n      return subtreeUpdated;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_throwIfControlMissing\",\n    value: function _throwIfControlMissing(name) {\n      if (!Object.keys(this.controls).length) {\n        throw new Error(\"\\n        There are no form controls registered with this group yet. If you're using ngModel,\\n        you may want to check next tick (e.g. use setTimeout).\\n      \");\n      }\n\n      if (!this.controls[name]) {\n        throw new Error(\"Cannot find form control with name: \".concat(name, \".\"));\n      }\n    }\n    /** @internal */\n\n  }, {\n    key: \"_forEachChild\",\n    value: function _forEachChild(cb) {\n      var _this13 = this;\n\n      Object.keys(this.controls).forEach(function (k) {\n        return cb(_this13.controls[k], k);\n      });\n    }\n    /** @internal */\n\n  }, {\n    key: \"_setUpControls\",\n    value: function _setUpControls() {\n      var _this14 = this;\n\n      this._forEachChild(function (control) {\n        control.setParent(_this14);\n\n        control._registerOnCollectionChange(_this14._onCollectionChange);\n      });\n    }\n    /** @internal */\n\n  }, {\n    key: \"_updateValue\",\n    value: function _updateValue() {\n      this.value = this._reduceValue();\n    }\n    /** @internal */\n\n  }, {\n    key: \"_anyControls\",\n    value: function _anyControls(condition) {\n      for (var _i4 = 0, _Object$keys = Object.keys(this.controls); _i4 < _Object$keys.length; _i4++) {\n        var controlName = _Object$keys[_i4];\n        var control = this.controls[controlName];\n\n        if (this.contains(controlName) && condition(control)) {\n          return true;\n        }\n      }\n\n      return false;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_reduceValue\",\n    value: function _reduceValue() {\n      var _this15 = this;\n\n      return this._reduceChildren({}, function (acc, control, name) {\n        if (control.enabled || _this15.disabled) {\n          acc[name] = control.value;\n        }\n\n        return acc;\n      });\n    }\n    /** @internal */\n\n  }, {\n    key: \"_reduceChildren\",\n    value: function _reduceChildren(initValue, fn) {\n      var res = initValue;\n\n      this._forEachChild(function (control, name) {\n        res = fn(res, control, name);\n      });\n\n      return res;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_allControlsDisabled\",\n    value: function _allControlsDisabled() {\n      for (var _i5 = 0, _Object$keys2 = Object.keys(this.controls); _i5 < _Object$keys2.length; _i5++) {\n        var controlName = _Object$keys2[_i5];\n\n        if (this.controls[controlName].enabled) {\n          return false;\n        }\n      }\n\n      return Object.keys(this.controls).length > 0 || this.disabled;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_checkAllValuesPresent\",\n    value: function _checkAllValuesPresent(value) {\n      this._forEachChild(function (control, name) {\n        if (value[name] === undefined) {\n          throw new Error(\"Must supply a value for form control with name: '\".concat(name, \"'.\"));\n        }\n      });\n    }\n  }]);\n\n  return FormGroup;\n}(AbstractControl);\n/**\n * Tracks the value and validity state of an array of `FormControl`,\n * `FormGroup` or `FormArray` instances.\n *\n * A `FormArray` aggregates the values of each child `FormControl` into an array.\n * It calculates its status by reducing the status values of its children. For example, if one of\n * the controls in a `FormArray` is invalid, the entire array becomes invalid.\n *\n * `FormArray` is one of the three fundamental building blocks used to define forms in Angular,\n * along with `FormControl` and `FormGroup`.\n *\n * @usageNotes\n *\n * ### Create an array of form controls\n *\n * ```\n * const arr = new FormArray([\n *   new FormControl('Nancy', Validators.minLength(2)),\n *   new FormControl('Drew'),\n * ]);\n *\n * console.log(arr.value);   // ['Nancy', 'Drew']\n * console.log(arr.status);  // 'VALID'\n * ```\n *\n * ### Create a form array with array-level validators\n *\n * You include array-level validators and async validators. These come in handy\n * when you want to perform validation that considers the value of more than one child\n * control.\n *\n * The two types of validators are passed in separately as the second and third arg\n * respectively, or together as part of an options object.\n *\n * ```\n * const arr = new FormArray([\n *   new FormControl('Nancy'),\n *   new FormControl('Drew')\n * ], {validators: myValidator, asyncValidators: myAsyncValidator});\n * ```\n *\n * ### Set the updateOn property for all controls in a form array\n *\n * The options object is used to set a default value for each child\n * control's `updateOn` property. If you set `updateOn` to `'blur'` at the\n * array level, all child controls default to 'blur', unless the child\n * has explicitly specified a different `updateOn` value.\n *\n * ```ts\n * const arr = new FormArray([\n *    new FormControl()\n * ], {updateOn: 'blur'});\n * ```\n *\n * ### Adding or removing controls from a form array\n *\n * To change the controls in the array, use the `push`, `insert`, `removeAt` or `clear` methods\n * in `FormArray` itself. These methods ensure the controls are properly tracked in the\n * form's hierarchy. Do not modify the array of `AbstractControl`s used to instantiate\n * the `FormArray` directly, as that result in strange and unexpected behavior such\n * as broken change detection.\n *\n * @publicApi\n */\n\n\nvar FormArray = /*#__PURE__*/function (_AbstractControl3) {\n  _inherits(FormArray, _AbstractControl3);\n\n  var _super7 = _createSuper(FormArray);\n\n  /**\n   * Creates a new `FormArray` instance.\n   *\n   * @param controls An array of child controls. Each child control is given an index\n   * where it is registered.\n   *\n   * @param validatorOrOpts A synchronous validator function, or an array of\n   * such functions, or an `AbstractControlOptions` object that contains validation functions\n   * and a validation trigger.\n   *\n   * @param asyncValidator A single async validator or array of async validator functions\n   *\n   */\n  function FormArray(controls, validatorOrOpts, asyncValidator) {\n    var _this16;\n\n    _classCallCheck(this, FormArray);\n\n    _this16 = _super7.call(this, pickValidators(validatorOrOpts), pickAsyncValidators(asyncValidator, validatorOrOpts));\n    _this16.controls = controls;\n\n    _this16._initObservables();\n\n    _this16._setUpdateStrategy(validatorOrOpts);\n\n    _this16._setUpControls();\n\n    _this16.updateValueAndValidity({\n      onlySelf: true,\n      // If `asyncValidator` is present, it will trigger control status change from `PENDING` to\n      // `VALID` or `INVALID`.\n      // The status should be broadcasted via the `statusChanges` observable, so we set `emitEvent`\n      // to `true` to allow that during the control creation process.\n      emitEvent: !!asyncValidator\n    });\n\n    return _this16;\n  }\n  /**\n   * Get the `AbstractControl` at the given `index` in the array.\n   *\n   * @param index Index in the array to retrieve the control\n   */\n\n\n  _createClass(FormArray, [{\n    key: \"at\",\n    value: function at(index) {\n      return this.controls[index];\n    }\n    /**\n     * Insert a new `AbstractControl` at the end of the array.\n     *\n     * @param control Form control to be inserted\n     */\n\n  }, {\n    key: \"push\",\n    value: function push(control) {\n      this.controls.push(control);\n\n      this._registerControl(control);\n\n      this.updateValueAndValidity();\n\n      this._onCollectionChange();\n    }\n    /**\n     * Insert a new `AbstractControl` at the given `index` in the array.\n     *\n     * @param index Index in the array to insert the control\n     * @param control Form control to be inserted\n     */\n\n  }, {\n    key: \"insert\",\n    value: function insert(index, control) {\n      this.controls.splice(index, 0, control);\n\n      this._registerControl(control);\n\n      this.updateValueAndValidity();\n    }\n    /**\n     * Remove the control at the given `index` in the array.\n     *\n     * @param index Index in the array to remove the control\n     */\n\n  }, {\n    key: \"removeAt\",\n    value: function removeAt(index) {\n      if (this.controls[index]) this.controls[index]._registerOnCollectionChange(function () {});\n      this.controls.splice(index, 1);\n      this.updateValueAndValidity();\n    }\n    /**\n     * Replace an existing control.\n     *\n     * @param index Index in the array to replace the control\n     * @param control The `AbstractControl` control to replace the existing control\n     */\n\n  }, {\n    key: \"setControl\",\n    value: function setControl(index, control) {\n      if (this.controls[index]) this.controls[index]._registerOnCollectionChange(function () {});\n      this.controls.splice(index, 1);\n\n      if (control) {\n        this.controls.splice(index, 0, control);\n\n        this._registerControl(control);\n      }\n\n      this.updateValueAndValidity();\n\n      this._onCollectionChange();\n    }\n    /**\n     * Length of the control array.\n     */\n\n  }, {\n    key: \"length\",\n    get: function get() {\n      return this.controls.length;\n    }\n    /**\n     * Sets the value of the `FormArray`. It accepts an array that matches\n     * the structure of the control.\n     *\n     * This method performs strict checks, and throws an error if you try\n     * to set the value of a control that doesn't exist or if you exclude the\n     * value of a control.\n     *\n     * @usageNotes\n     * ### Set the values for the controls in the form array\n     *\n     * ```\n     * const arr = new FormArray([\n     *   new FormControl(),\n     *   new FormControl()\n     * ]);\n     * console.log(arr.value);   // [null, null]\n     *\n     * arr.setValue(['Nancy', 'Drew']);\n     * console.log(arr.value);   // ['Nancy', 'Drew']\n     * ```\n     *\n     * @param value Array of values for the controls\n     * @param options Configure options that determine how the control propagates changes and\n     * emits events after the value changes\n     *\n     * * `onlySelf`: When true, each change only affects this control, and not its parent. Default\n     * is false.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges`\n     * observables emit events with the latest status and value when the control value is updated.\n     * When false, no events are emitted.\n     * The configuration options are passed to the {@link AbstractControl#updateValueAndValidity\n     * updateValueAndValidity} method.\n     */\n\n  }, {\n    key: \"setValue\",\n    value: function setValue(value) {\n      var _this17 = this;\n\n      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n      this._checkAllValuesPresent(value);\n\n      value.forEach(function (newValue, index) {\n        _this17._throwIfControlMissing(index);\n\n        _this17.at(index).setValue(newValue, {\n          onlySelf: true,\n          emitEvent: options.emitEvent\n        });\n      });\n      this.updateValueAndValidity(options);\n    }\n    /**\n     * Patches the value of the `FormArray`. It accepts an array that matches the\n     * structure of the control, and does its best to match the values to the correct\n     * controls in the group.\n     *\n     * It accepts both super-sets and sub-sets of the array without throwing an error.\n     *\n     * @usageNotes\n     * ### Patch the values for controls in a form array\n     *\n     * ```\n     * const arr = new FormArray([\n     *    new FormControl(),\n     *    new FormControl()\n     * ]);\n     * console.log(arr.value);   // [null, null]\n     *\n     * arr.patchValue(['Nancy']);\n     * console.log(arr.value);   // ['Nancy', null]\n     * ```\n     *\n     * @param value Array of latest values for the controls\n     * @param options Configure options that determine how the control propagates changes and\n     * emits events after the value changes\n     *\n     * * `onlySelf`: When true, each change only affects this control, and not its parent. Default\n     * is false.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges`\n     * observables emit events with the latest status and value when the control value is updated.\n     * When false, no events are emitted.\n     * The configuration options are passed to the {@link AbstractControl#updateValueAndValidity\n     * updateValueAndValidity} method.\n     */\n\n  }, {\n    key: \"patchValue\",\n    value: function patchValue(value) {\n      var _this18 = this;\n\n      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n      value.forEach(function (newValue, index) {\n        if (_this18.at(index)) {\n          _this18.at(index).patchValue(newValue, {\n            onlySelf: true,\n            emitEvent: options.emitEvent\n          });\n        }\n      });\n      this.updateValueAndValidity(options);\n    }\n    /**\n     * Resets the `FormArray` and all descendants are marked `pristine` and `untouched`, and the\n     * value of all descendants to null or null maps.\n     *\n     * You reset to a specific form state by passing in an array of states\n     * that matches the structure of the control. The state is a standalone value\n     * or a form state object with both a value and a disabled status.\n     *\n     * @usageNotes\n     * ### Reset the values in a form array\n     *\n     * ```ts\n     * const arr = new FormArray([\n     *    new FormControl(),\n     *    new FormControl()\n     * ]);\n     * arr.reset(['name', 'last name']);\n     *\n     * console.log(this.arr.value);  // ['name', 'last name']\n     * ```\n     *\n     * ### Reset the values in a form array and the disabled status for the first control\n     *\n     * ```\n     * this.arr.reset([\n     *   {value: 'name', disabled: true},\n     *   'last'\n     * ]);\n     *\n     * console.log(this.arr.value);  // ['name', 'last name']\n     * console.log(this.arr.get(0).status);  // 'DISABLED'\n     * ```\n     *\n     * @param value Array of values for the controls\n     * @param options Configure options that determine how the control propagates changes and\n     * emits events after the value changes\n     *\n     * * `onlySelf`: When true, each change only affects this control, and not its parent. Default\n     * is false.\n     * * `emitEvent`: When true or not supplied (the default), both the `statusChanges` and\n     * `valueChanges`\n     * observables emit events with the latest status and value when the control is reset.\n     * When false, no events are emitted.\n     * The configuration options are passed to the {@link AbstractControl#updateValueAndValidity\n     * updateValueAndValidity} method.\n     */\n\n  }, {\n    key: \"reset\",\n    value: function reset() {\n      var value = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];\n      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n      this._forEachChild(function (control, index) {\n        control.reset(value[index], {\n          onlySelf: true,\n          emitEvent: options.emitEvent\n        });\n      });\n\n      this._updatePristine(options);\n\n      this._updateTouched(options);\n\n      this.updateValueAndValidity(options);\n    }\n    /**\n     * The aggregate value of the array, including any disabled controls.\n     *\n     * Reports all values regardless of disabled status.\n     * For enabled controls only, the `value` property is the best way to get the value of the array.\n     */\n\n  }, {\n    key: \"getRawValue\",\n    value: function getRawValue() {\n      return this.controls.map(function (control) {\n        return control instanceof FormControl ? control.value : control.getRawValue();\n      });\n    }\n    /**\n     * Remove all controls in the `FormArray`.\n     *\n     * @usageNotes\n     * ### Remove all elements from a FormArray\n     *\n     * ```ts\n     * const arr = new FormArray([\n     *    new FormControl(),\n     *    new FormControl()\n     * ]);\n     * console.log(arr.length);  // 2\n     *\n     * arr.clear();\n     * console.log(arr.length);  // 0\n     * ```\n     *\n     * It's a simpler and more efficient alternative to removing all elements one by one:\n     *\n     * ```ts\n     * const arr = new FormArray([\n     *    new FormControl(),\n     *    new FormControl()\n     * ]);\n     *\n     * while (arr.length) {\n     *    arr.removeAt(0);\n     * }\n     * ```\n     */\n\n  }, {\n    key: \"clear\",\n    value: function clear() {\n      if (this.controls.length < 1) return;\n\n      this._forEachChild(function (control) {\n        return control._registerOnCollectionChange(function () {});\n      });\n\n      this.controls.splice(0);\n      this.updateValueAndValidity();\n    }\n    /** @internal */\n\n  }, {\n    key: \"_syncPendingControls\",\n    value: function _syncPendingControls() {\n      var subtreeUpdated = this.controls.reduce(function (updated, child) {\n        return child._syncPendingControls() ? true : updated;\n      }, false);\n      if (subtreeUpdated) this.updateValueAndValidity({\n        onlySelf: true\n      });\n      return subtreeUpdated;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_throwIfControlMissing\",\n    value: function _throwIfControlMissing(index) {\n      if (!this.controls.length) {\n        throw new Error(\"\\n        There are no form controls registered with this array yet. If you're using ngModel,\\n        you may want to check next tick (e.g. use setTimeout).\\n      \");\n      }\n\n      if (!this.at(index)) {\n        throw new Error(\"Cannot find form control at index \".concat(index));\n      }\n    }\n    /** @internal */\n\n  }, {\n    key: \"_forEachChild\",\n    value: function _forEachChild(cb) {\n      this.controls.forEach(function (control, index) {\n        cb(control, index);\n      });\n    }\n    /** @internal */\n\n  }, {\n    key: \"_updateValue\",\n    value: function _updateValue() {\n      var _this19 = this;\n\n      this.value = this.controls.filter(function (control) {\n        return control.enabled || _this19.disabled;\n      }).map(function (control) {\n        return control.value;\n      });\n    }\n    /** @internal */\n\n  }, {\n    key: \"_anyControls\",\n    value: function _anyControls(condition) {\n      return this.controls.some(function (control) {\n        return control.enabled && condition(control);\n      });\n    }\n    /** @internal */\n\n  }, {\n    key: \"_setUpControls\",\n    value: function _setUpControls() {\n      var _this20 = this;\n\n      this._forEachChild(function (control) {\n        return _this20._registerControl(control);\n      });\n    }\n    /** @internal */\n\n  }, {\n    key: \"_checkAllValuesPresent\",\n    value: function _checkAllValuesPresent(value) {\n      this._forEachChild(function (control, i) {\n        if (value[i] === undefined) {\n          throw new Error(\"Must supply a value for form control at index: \".concat(i, \".\"));\n        }\n      });\n    }\n    /** @internal */\n\n  }, {\n    key: \"_allControlsDisabled\",\n    value: function _allControlsDisabled() {\n      var _iterator = _createForOfIteratorHelper(this.controls),\n          _step;\n\n      try {\n        for (_iterator.s(); !(_step = _iterator.n()).done;) {\n          var control = _step.value;\n          if (control.enabled) return false;\n        }\n      } catch (err) {\n        _iterator.e(err);\n      } finally {\n        _iterator.f();\n      }\n\n      return this.controls.length > 0 || this.disabled;\n    }\n  }, {\n    key: \"_registerControl\",\n    value: function _registerControl(control) {\n      control.setParent(this);\n\n      control._registerOnCollectionChange(this._onCollectionChange);\n    }\n  }]);\n\n  return FormArray;\n}(AbstractControl);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar formDirectiveProvider = {\n  provide: ControlContainer,\n  useExisting: forwardRef(function () {\n    return NgForm;\n  })\n};\n\nvar ɵ0 = function ɵ0() {\n  return Promise.resolve(null);\n};\n\nvar resolvedPromise = ɵ0();\n/**\n * @description\n * Creates a top-level `FormGroup` instance and binds it to a form\n * to track aggregate form value and validation status.\n *\n * As soon as you import the `FormsModule`, this directive becomes active by default on\n * all `<form>` tags.  You don't need to add a special selector.\n *\n * You optionally export the directive into a local template variable using `ngForm` as the key\n * (ex: `#myForm=\"ngForm\"`). This is optional, but useful.  Many properties from the underlying\n * `FormGroup` instance are duplicated on the directive itself, so a reference to it\n * gives you access to the aggregate value and validity status of the form, as well as\n * user interaction properties like `dirty` and `touched`.\n *\n * To register child controls with the form, use `NgModel` with a `name`\n * attribute. You may use `NgModelGroup` to create sub-groups within the form.\n *\n * If necessary, listen to the directive's `ngSubmit` event to be notified when the user has\n * triggered a form submission. The `ngSubmit` event emits the original form\n * submission event.\n *\n * In template driven forms, all `<form>` tags are automatically tagged as `NgForm`.\n * To import the `FormsModule` but skip its usage in some forms,\n * for example, to use native HTML5 validation, add the `ngNoForm` and the `<form>`\n * tags won't create an `NgForm` directive. In reactive forms, using `ngNoForm` is\n * unnecessary because the `<form>` tags are inert. In that case, you would\n * refrain from using the `formGroup` directive.\n *\n * @usageNotes\n *\n * ### Listening for form submission\n *\n * The following example shows how to capture the form values from the \"ngSubmit\" event.\n *\n * {@example forms/ts/simpleForm/simple_form_example.ts region='Component'}\n *\n * ### Setting the update options\n *\n * The following example shows you how to change the \"updateOn\" option from its default using\n * ngFormOptions.\n *\n * ```html\n * <form [ngFormOptions]=\"{updateOn: 'blur'}\">\n *    <input name=\"one\" ngModel>  <!-- this ngModel will update on blur -->\n * </form>\n * ```\n *\n * ### Native DOM validation UI\n *\n * In order to prevent the native DOM form validation UI from interfering with Angular's form\n * validation, Angular automatically adds the `novalidate` attribute on any `<form>` whenever\n * `FormModule` or `ReactiveFormModule` are imported into the application.\n * If you want to explicitly enable native DOM validation UI with Angular forms, you can add the\n * `ngNativeValidate` attribute to the `<form>` element:\n *\n * ```html\n * <form ngNativeValidate>\n *   ...\n * </form>\n * ```\n *\n * @ngModule FormsModule\n * @publicApi\n */\n\nvar NgForm = /*#__PURE__*/function (_ControlContainer) {\n  _inherits(NgForm, _ControlContainer);\n\n  var _super8 = _createSuper(NgForm);\n\n  function NgForm(validators, asyncValidators) {\n    var _this21;\n\n    _classCallCheck(this, NgForm);\n\n    _this21 = _super8.call(this);\n    /**\n     * @description\n     * Returns whether the form submission has been triggered.\n     */\n\n    _this21.submitted = false;\n    _this21._directives = [];\n    /**\n     * @description\n     * Event emitter for the \"ngSubmit\" event\n     */\n\n    _this21.ngSubmit = new EventEmitter();\n    _this21.form = new FormGroup({}, composeValidators(validators), composeAsyncValidators(asyncValidators));\n    return _this21;\n  }\n  /** @nodoc */\n\n\n  _createClass(NgForm, [{\n    key: \"ngAfterViewInit\",\n    value: function ngAfterViewInit() {\n      this._setUpdateStrategy();\n    }\n    /**\n     * @description\n     * The directive instance.\n     */\n\n  }, {\n    key: \"formDirective\",\n    get: function get() {\n      return this;\n    }\n    /**\n     * @description\n     * The internal `FormGroup` instance.\n     */\n\n  }, {\n    key: \"control\",\n    get: function get() {\n      return this.form;\n    }\n    /**\n     * @description\n     * Returns an array representing the path to this group. Because this directive\n     * always lives at the top level of a form, it is always an empty array.\n     */\n\n  }, {\n    key: \"path\",\n    get: function get() {\n      return [];\n    }\n    /**\n     * @description\n     * Returns a map of the controls in this group.\n     */\n\n  }, {\n    key: \"controls\",\n    get: function get() {\n      return this.form.controls;\n    }\n    /**\n     * @description\n     * Method that sets up the control directive in this group, re-calculates its value\n     * and validity, and adds the instance to the internal list of directives.\n     *\n     * @param dir The `NgModel` directive instance.\n     */\n\n  }, {\n    key: \"addControl\",\n    value: function addControl(dir) {\n      var _this22 = this;\n\n      resolvedPromise.then(function () {\n        var container = _this22._findContainer(dir.path);\n\n        dir.control = container.registerControl(dir.name, dir.control);\n        setUpControl(dir.control, dir);\n        dir.control.updateValueAndValidity({\n          emitEvent: false\n        });\n\n        _this22._directives.push(dir);\n      });\n    }\n    /**\n     * @description\n     * Retrieves the `FormControl` instance from the provided `NgModel` directive.\n     *\n     * @param dir The `NgModel` directive instance.\n     */\n\n  }, {\n    key: \"getControl\",\n    value: function getControl(dir) {\n      return this.form.get(dir.path);\n    }\n    /**\n     * @description\n     * Removes the `NgModel` instance from the internal list of directives\n     *\n     * @param dir The `NgModel` directive instance.\n     */\n\n  }, {\n    key: \"removeControl\",\n    value: function removeControl(dir) {\n      var _this23 = this;\n\n      resolvedPromise.then(function () {\n        var container = _this23._findContainer(dir.path);\n\n        if (container) {\n          container.removeControl(dir.name);\n        }\n\n        removeListItem(_this23._directives, dir);\n      });\n    }\n    /**\n     * @description\n     * Adds a new `NgModelGroup` directive instance to the form.\n     *\n     * @param dir The `NgModelGroup` directive instance.\n     */\n\n  }, {\n    key: \"addFormGroup\",\n    value: function addFormGroup(dir) {\n      var _this24 = this;\n\n      resolvedPromise.then(function () {\n        var container = _this24._findContainer(dir.path);\n\n        var group = new FormGroup({});\n        setUpFormContainer(group, dir);\n        container.registerControl(dir.name, group);\n        group.updateValueAndValidity({\n          emitEvent: false\n        });\n      });\n    }\n    /**\n     * @description\n     * Removes the `NgModelGroup` directive instance from the form.\n     *\n     * @param dir The `NgModelGroup` directive instance.\n     */\n\n  }, {\n    key: \"removeFormGroup\",\n    value: function removeFormGroup(dir) {\n      var _this25 = this;\n\n      resolvedPromise.then(function () {\n        var container = _this25._findContainer(dir.path);\n\n        if (container) {\n          container.removeControl(dir.name);\n        }\n      });\n    }\n    /**\n     * @description\n     * Retrieves the `FormGroup` for a provided `NgModelGroup` directive instance\n     *\n     * @param dir The `NgModelGroup` directive instance.\n     */\n\n  }, {\n    key: \"getFormGroup\",\n    value: function getFormGroup(dir) {\n      return this.form.get(dir.path);\n    }\n    /**\n     * Sets the new value for the provided `NgControl` directive.\n     *\n     * @param dir The `NgControl` directive instance.\n     * @param value The new value for the directive's control.\n     */\n\n  }, {\n    key: \"updateModel\",\n    value: function updateModel(dir, value) {\n      var _this26 = this;\n\n      resolvedPromise.then(function () {\n        var ctrl = _this26.form.get(dir.path);\n\n        ctrl.setValue(value);\n      });\n    }\n    /**\n     * @description\n     * Sets the value for this `FormGroup`.\n     *\n     * @param value The new value\n     */\n\n  }, {\n    key: \"setValue\",\n    value: function setValue(value) {\n      this.control.setValue(value);\n    }\n    /**\n     * @description\n     * Method called when the \"submit\" event is triggered on the form.\n     * Triggers the `ngSubmit` emitter to emit the \"submit\" event as its payload.\n     *\n     * @param $event The \"submit\" event object\n     */\n\n  }, {\n    key: \"onSubmit\",\n    value: function onSubmit($event) {\n      this.submitted = true;\n      syncPendingControls(this.form, this._directives);\n      this.ngSubmit.emit($event);\n      return false;\n    }\n    /**\n     * @description\n     * Method called when the \"reset\" event is triggered on the form.\n     */\n\n  }, {\n    key: \"onReset\",\n    value: function onReset() {\n      this.resetForm();\n    }\n    /**\n     * @description\n     * Resets the form to an initial value and resets its submitted status.\n     *\n     * @param value The new value for the form.\n     */\n\n  }, {\n    key: \"resetForm\",\n    value: function resetForm() {\n      var value = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : undefined;\n      this.form.reset(value);\n      this.submitted = false;\n    }\n  }, {\n    key: \"_setUpdateStrategy\",\n    value: function _setUpdateStrategy() {\n      if (this.options && this.options.updateOn != null) {\n        this.form._updateOn = this.options.updateOn;\n      }\n    }\n    /** @internal */\n\n  }, {\n    key: \"_findContainer\",\n    value: function _findContainer(path) {\n      path.pop();\n      return path.length ? this.form.get(path) : this.form;\n    }\n  }]);\n\n  return NgForm;\n}(ControlContainer);\n\nNgForm.decorators = [{\n  type: Directive,\n  args: [{\n    selector: 'form:not([ngNoForm]):not([formGroup]),ng-form,[ngForm]',\n    providers: [formDirectiveProvider],\n    host: {\n      '(submit)': 'onSubmit($event)',\n      '(reset)': 'onReset()'\n    },\n    outputs: ['ngSubmit'],\n    exportAs: 'ngForm'\n  }]\n}];\n\nNgForm.ctorParameters = function () {\n  return [{\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_VALIDATORS]\n    }]\n  }, {\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_ASYNC_VALIDATORS]\n    }]\n  }];\n};\n\nNgForm.propDecorators = {\n  options: [{\n    type: Input,\n    args: ['ngFormOptions']\n  }]\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @description\n * A base class for code shared between the `NgModelGroup` and `FormGroupName` directives.\n *\n * @publicApi\n */\n\nvar AbstractFormGroupDirective = /*#__PURE__*/function (_ControlContainer2) {\n  _inherits(AbstractFormGroupDirective, _ControlContainer2);\n\n  var _super9 = _createSuper(AbstractFormGroupDirective);\n\n  function AbstractFormGroupDirective() {\n    _classCallCheck(this, AbstractFormGroupDirective);\n\n    return _super9.apply(this, arguments);\n  }\n\n  _createClass(AbstractFormGroupDirective, [{\n    key: \"ngOnInit\",\n    value:\n    /** @nodoc */\n    function ngOnInit() {\n      this._checkParentType(); // Register the group with its parent group.\n\n\n      this.formDirective.addFormGroup(this);\n    }\n    /** @nodoc */\n\n  }, {\n    key: \"ngOnDestroy\",\n    value: function ngOnDestroy() {\n      if (this.formDirective) {\n        // Remove the group from its parent group.\n        this.formDirective.removeFormGroup(this);\n      }\n    }\n    /**\n     * @description\n     * The `FormGroup` bound to this directive.\n     */\n\n  }, {\n    key: \"control\",\n    get: function get() {\n      return this.formDirective.getFormGroup(this);\n    }\n    /**\n     * @description\n     * The path to this group from the top-level directive.\n     */\n\n  }, {\n    key: \"path\",\n    get: function get() {\n      return controlPath(this.name == null ? this.name : this.name.toString(), this._parent);\n    }\n    /**\n     * @description\n     * The top-level directive for this group if present, otherwise null.\n     */\n\n  }, {\n    key: \"formDirective\",\n    get: function get() {\n      return this._parent ? this._parent.formDirective : null;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_checkParentType\",\n    value: function _checkParentType() {}\n  }]);\n\n  return AbstractFormGroupDirective;\n}(ControlContainer);\n\nAbstractFormGroupDirective.decorators = [{\n  type: Directive\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar TemplateDrivenErrors = /*#__PURE__*/function () {\n  function TemplateDrivenErrors() {\n    _classCallCheck(this, TemplateDrivenErrors);\n  }\n\n  _createClass(TemplateDrivenErrors, null, [{\n    key: \"modelParentException\",\n    value: function modelParentException() {\n      throw new Error(\"\\n      ngModel cannot be used to register form controls with a parent formGroup directive.  Try using\\n      formGroup's partner directive \\\"formControlName\\\" instead.  Example:\\n\\n      \".concat(FormErrorExamples.formControlName, \"\\n\\n      Or, if you'd like to avoid registering this form control, indicate that it's standalone in ngModelOptions:\\n\\n      Example:\\n\\n      \").concat(FormErrorExamples.ngModelWithFormGroup));\n    }\n  }, {\n    key: \"formGroupNameException\",\n    value: function formGroupNameException() {\n      throw new Error(\"\\n      ngModel cannot be used to register form controls with a parent formGroupName or formArrayName directive.\\n\\n      Option 1: Use formControlName instead of ngModel (reactive strategy):\\n\\n      \".concat(FormErrorExamples.formGroupName, \"\\n\\n      Option 2:  Update ngModel's parent be ngModelGroup (template-driven strategy):\\n\\n      \").concat(FormErrorExamples.ngModelGroup));\n    }\n  }, {\n    key: \"missingNameException\",\n    value: function missingNameException() {\n      throw new Error(\"If ngModel is used within a form tag, either the name attribute must be set or the form\\n      control must be defined as 'standalone' in ngModelOptions.\\n\\n      Example 1: <input [(ngModel)]=\\\"person.firstName\\\" name=\\\"first\\\">\\n      Example 2: <input [(ngModel)]=\\\"person.firstName\\\" [ngModelOptions]=\\\"{standalone: true}\\\">\");\n    }\n  }, {\n    key: \"modelGroupParentException\",\n    value: function modelGroupParentException() {\n      throw new Error(\"\\n      ngModelGroup cannot be used with a parent formGroup directive.\\n\\n      Option 1: Use formGroupName instead of ngModelGroup (reactive strategy):\\n\\n      \".concat(FormErrorExamples.formGroupName, \"\\n\\n      Option 2:  Use a regular form tag instead of the formGroup directive (template-driven strategy):\\n\\n      \").concat(FormErrorExamples.ngModelGroup));\n    }\n  }]);\n\n  return TemplateDrivenErrors;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar modelGroupProvider = {\n  provide: ControlContainer,\n  useExisting: forwardRef(function () {\n    return NgModelGroup;\n  })\n};\n/**\n * @description\n * Creates and binds a `FormGroup` instance to a DOM element.\n *\n * This directive can only be used as a child of `NgForm` (within `<form>` tags).\n *\n * Use this directive to validate a sub-group of your form separately from the\n * rest of your form, or if some values in your domain model make more sense\n * to consume together in a nested object.\n *\n * Provide a name for the sub-group and it will become the key\n * for the sub-group in the form's full value. If you need direct access, export the directive into\n * a local template variable using `ngModelGroup` (ex: `#myGroup=\"ngModelGroup\"`).\n *\n * @usageNotes\n *\n * ### Consuming controls in a grouping\n *\n * The following example shows you how to combine controls together in a sub-group\n * of the form.\n *\n * {@example forms/ts/ngModelGroup/ng_model_group_example.ts region='Component'}\n *\n * @ngModule FormsModule\n * @publicApi\n */\n\nvar NgModelGroup = /*#__PURE__*/function (_AbstractFormGroupDir) {\n  _inherits(NgModelGroup, _AbstractFormGroupDir);\n\n  var _super10 = _createSuper(NgModelGroup);\n\n  function NgModelGroup(parent, validators, asyncValidators) {\n    var _this27;\n\n    _classCallCheck(this, NgModelGroup);\n\n    _this27 = _super10.call(this);\n    _this27._parent = parent;\n\n    _this27._setValidators(validators);\n\n    _this27._setAsyncValidators(asyncValidators);\n\n    return _this27;\n  }\n  /** @internal */\n\n\n  _createClass(NgModelGroup, [{\n    key: \"_checkParentType\",\n    value: function _checkParentType() {\n      if (!(this._parent instanceof NgModelGroup) && !(this._parent instanceof NgForm) && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n        TemplateDrivenErrors.modelGroupParentException();\n      }\n    }\n  }]);\n\n  return NgModelGroup;\n}(AbstractFormGroupDirective);\n\nNgModelGroup.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[ngModelGroup]',\n    providers: [modelGroupProvider],\n    exportAs: 'ngModelGroup'\n  }]\n}];\n\nNgModelGroup.ctorParameters = function () {\n  return [{\n    type: ControlContainer,\n    decorators: [{\n      type: Host\n    }, {\n      type: SkipSelf\n    }]\n  }, {\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_VALIDATORS]\n    }]\n  }, {\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_ASYNC_VALIDATORS]\n    }]\n  }];\n};\n\nNgModelGroup.propDecorators = {\n  name: [{\n    type: Input,\n    args: ['ngModelGroup']\n  }]\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar formControlBinding = {\n  provide: NgControl,\n  useExisting: forwardRef(function () {\n    return NgModel;\n  })\n};\n\nvar ɵ0$1 = function ɵ0$1() {\n  return Promise.resolve(null);\n};\n/**\n * `ngModel` forces an additional change detection run when its inputs change:\n * E.g.:\n * ```\n * <div>{{myModel.valid}}</div>\n * <input [(ngModel)]=\"myValue\" #myModel=\"ngModel\">\n * ```\n * I.e. `ngModel` can export itself on the element and then be used in the template.\n * Normally, this would result in expressions before the `input` that use the exported directive\n * to have an old value as they have been\n * dirty checked before. As this is a very common case for `ngModel`, we added this second change\n * detection run.\n *\n * Notes:\n * - this is just one extra run no matter how many `ngModel`s have been changed.\n * - this is a general problem when using `exportAs` for directives!\n */\n\n\nvar resolvedPromise$1 = ɵ0$1();\n/**\n * @description\n * Creates a `FormControl` instance from a domain model and binds it\n * to a form control element.\n *\n * The `FormControl` instance tracks the value, user interaction, and\n * validation status of the control and keeps the view synced with the model. If used\n * within a parent form, the directive also registers itself with the form as a child\n * control.\n *\n * This directive is used by itself or as part of a larger form. Use the\n * `ngModel` selector to activate it.\n *\n * It accepts a domain model as an optional `Input`. If you have a one-way binding\n * to `ngModel` with `[]` syntax, changing the domain model's value in the component\n * class sets the value in the view. If you have a two-way binding with `[()]` syntax\n * (also known as 'banana-in-a-box syntax'), the value in the UI always syncs back to\n * the domain model in your class.\n *\n * To inspect the properties of the associated `FormControl` (like the validity state),\n * export the directive into a local template variable using `ngModel` as the key (ex:\n * `#myVar=\"ngModel\"`). You can then access the control using the directive's `control` property.\n * However, the most commonly used properties (like `valid` and `dirty`) also exist on the control\n * for direct access. See a full list of properties directly available in\n * `AbstractControlDirective`.\n *\n * @see `RadioControlValueAccessor`\n * @see `SelectControlValueAccessor`\n *\n * @usageNotes\n *\n * ### Using ngModel on a standalone control\n *\n * The following examples show a simple standalone control using `ngModel`:\n *\n * {@example forms/ts/simpleNgModel/simple_ng_model_example.ts region='Component'}\n *\n * When using the `ngModel` within `<form>` tags, you'll also need to supply a `name` attribute\n * so that the control can be registered with the parent form under that name.\n *\n * In the context of a parent form, it's often unnecessary to include one-way or two-way binding,\n * as the parent form syncs the value for you. You access its properties by exporting it into a\n * local template variable using `ngForm` such as (`#f=\"ngForm\"`). Use the variable where\n * needed on form submission.\n *\n * If you do need to populate initial values into your form, using a one-way binding for\n * `ngModel` tends to be sufficient as long as you use the exported form's value rather\n * than the domain model's value on submit.\n *\n * ### Using ngModel within a form\n *\n * The following example shows controls using `ngModel` within a form:\n *\n * {@example forms/ts/simpleForm/simple_form_example.ts region='Component'}\n *\n * ### Using a standalone ngModel within a group\n *\n * The following example shows you how to use a standalone ngModel control\n * within a form. This controls the display of the form, but doesn't contain form data.\n *\n * ```html\n * <form>\n *   <input name=\"login\" ngModel placeholder=\"Login\">\n *   <input type=\"checkbox\" ngModel [ngModelOptions]=\"{standalone: true}\"> Show more options?\n * </form>\n * <!-- form value: {login: ''} -->\n * ```\n *\n * ### Setting the ngModel `name` attribute through options\n *\n * The following example shows you an alternate way to set the name attribute. Here,\n * an attribute identified as name is used within a custom form control component. To still be able\n * to specify the NgModel's name, you must specify it using the `ngModelOptions` input instead.\n *\n * ```html\n * <form>\n *   <my-custom-form-control name=\"Nancy\" ngModel [ngModelOptions]=\"{name: 'user'}\">\n *   </my-custom-form-control>\n * </form>\n * <!-- form value: {user: ''} -->\n * ```\n *\n * @ngModule FormsModule\n * @publicApi\n */\n\nvar NgModel = /*#__PURE__*/function (_NgControl) {\n  _inherits(NgModel, _NgControl);\n\n  var _super11 = _createSuper(NgModel);\n\n  function NgModel(parent, validators, asyncValidators, valueAccessors) {\n    var _this28;\n\n    _classCallCheck(this, NgModel);\n\n    _this28 = _super11.call(this);\n    _this28.control = new FormControl();\n    /** @internal */\n\n    _this28._registered = false;\n    /**\n     * @description\n     * Event emitter for producing the `ngModelChange` event after\n     * the view model updates.\n     */\n\n    _this28.update = new EventEmitter();\n    _this28._parent = parent;\n\n    _this28._setValidators(validators);\n\n    _this28._setAsyncValidators(asyncValidators);\n\n    _this28.valueAccessor = selectValueAccessor(_assertThisInitialized(_this28), valueAccessors);\n    return _this28;\n  }\n  /** @nodoc */\n\n\n  _createClass(NgModel, [{\n    key: \"ngOnChanges\",\n    value: function ngOnChanges(changes) {\n      this._checkForErrors();\n\n      if (!this._registered) this._setUpControl();\n\n      if ('isDisabled' in changes) {\n        this._updateDisabled(changes);\n      }\n\n      if (isPropertyUpdated(changes, this.viewModel)) {\n        this._updateValue(this.model);\n\n        this.viewModel = this.model;\n      }\n    }\n    /** @nodoc */\n\n  }, {\n    key: \"ngOnDestroy\",\n    value: function ngOnDestroy() {\n      this.formDirective && this.formDirective.removeControl(this);\n    }\n    /**\n     * @description\n     * Returns an array that represents the path from the top-level form to this control.\n     * Each index is the string name of the control on that level.\n     */\n\n  }, {\n    key: \"path\",\n    get: function get() {\n      return this._parent ? controlPath(this.name, this._parent) : [this.name];\n    }\n    /**\n     * @description\n     * The top-level directive for this control if present, otherwise null.\n     */\n\n  }, {\n    key: \"formDirective\",\n    get: function get() {\n      return this._parent ? this._parent.formDirective : null;\n    }\n    /**\n     * @description\n     * Sets the new value for the view model and emits an `ngModelChange` event.\n     *\n     * @param newValue The new value emitted by `ngModelChange`.\n     */\n\n  }, {\n    key: \"viewToModelUpdate\",\n    value: function viewToModelUpdate(newValue) {\n      this.viewModel = newValue;\n      this.update.emit(newValue);\n    }\n  }, {\n    key: \"_setUpControl\",\n    value: function _setUpControl() {\n      this._setUpdateStrategy();\n\n      this._isStandalone() ? this._setUpStandalone() : this.formDirective.addControl(this);\n      this._registered = true;\n    }\n  }, {\n    key: \"_setUpdateStrategy\",\n    value: function _setUpdateStrategy() {\n      if (this.options && this.options.updateOn != null) {\n        this.control._updateOn = this.options.updateOn;\n      }\n    }\n  }, {\n    key: \"_isStandalone\",\n    value: function _isStandalone() {\n      return !this._parent || !!(this.options && this.options.standalone);\n    }\n  }, {\n    key: \"_setUpStandalone\",\n    value: function _setUpStandalone() {\n      setUpControl(this.control, this);\n      this.control.updateValueAndValidity({\n        emitEvent: false\n      });\n    }\n  }, {\n    key: \"_checkForErrors\",\n    value: function _checkForErrors() {\n      if (!this._isStandalone()) {\n        this._checkParentType();\n      }\n\n      this._checkName();\n    }\n  }, {\n    key: \"_checkParentType\",\n    value: function _checkParentType() {\n      if (typeof ngDevMode === 'undefined' || ngDevMode) {\n        if (!(this._parent instanceof NgModelGroup) && this._parent instanceof AbstractFormGroupDirective) {\n          TemplateDrivenErrors.formGroupNameException();\n        } else if (!(this._parent instanceof NgModelGroup) && !(this._parent instanceof NgForm)) {\n          TemplateDrivenErrors.modelParentException();\n        }\n      }\n    }\n  }, {\n    key: \"_checkName\",\n    value: function _checkName() {\n      if (this.options && this.options.name) this.name = this.options.name;\n\n      if (!this._isStandalone() && !this.name && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n        TemplateDrivenErrors.missingNameException();\n      }\n    }\n  }, {\n    key: \"_updateValue\",\n    value: function _updateValue(value) {\n      var _this29 = this;\n\n      resolvedPromise$1.then(function () {\n        _this29.control.setValue(value, {\n          emitViewToModelChange: false\n        });\n      });\n    }\n  }, {\n    key: \"_updateDisabled\",\n    value: function _updateDisabled(changes) {\n      var _this30 = this;\n\n      var disabledValue = changes['isDisabled'].currentValue;\n      var isDisabled = disabledValue === '' || disabledValue && disabledValue !== 'false';\n      resolvedPromise$1.then(function () {\n        if (isDisabled && !_this30.control.disabled) {\n          _this30.control.disable();\n        } else if (!isDisabled && _this30.control.disabled) {\n          _this30.control.enable();\n        }\n      });\n    }\n  }]);\n\n  return NgModel;\n}(NgControl);\n\nNgModel.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[ngModel]:not([formControlName]):not([formControl])',\n    providers: [formControlBinding],\n    exportAs: 'ngModel'\n  }]\n}];\n\nNgModel.ctorParameters = function () {\n  return [{\n    type: ControlContainer,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Host\n    }]\n  }, {\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_VALIDATORS]\n    }]\n  }, {\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_ASYNC_VALIDATORS]\n    }]\n  }, {\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_VALUE_ACCESSOR]\n    }]\n  }];\n};\n\nNgModel.propDecorators = {\n  name: [{\n    type: Input\n  }],\n  isDisabled: [{\n    type: Input,\n    args: ['disabled']\n  }],\n  model: [{\n    type: Input,\n    args: ['ngModel']\n  }],\n  options: [{\n    type: Input,\n    args: ['ngModelOptions']\n  }],\n  update: [{\n    type: Output,\n    args: ['ngModelChange']\n  }]\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @description\n *\n * Adds `novalidate` attribute to all forms by default.\n *\n * `novalidate` is used to disable browser's native form validation.\n *\n * If you want to use native validation with Angular forms, just add `ngNativeValidate` attribute:\n *\n * ```\n * <form ngNativeValidate></form>\n * ```\n *\n * @publicApi\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n */\n\nvar ɵNgNoValidate = /*#__PURE__*/_createClass(function ɵNgNoValidate() {\n  _classCallCheck(this, ɵNgNoValidate);\n});\n\nɵNgNoValidate.decorators = [{\n  type: Directive,\n  args: [{\n    selector: 'form:not([ngNoForm]):not([ngNativeValidate])',\n    host: {\n      'novalidate': ''\n    }\n  }]\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Token to provide to turn off the ngModel warning on formControl and formControlName.\n */\n\nvar NG_MODEL_WITH_FORM_CONTROL_WARNING = new InjectionToken('NgModelWithFormControlWarning');\nvar formControlBinding$1 = {\n  provide: NgControl,\n  useExisting: forwardRef(function () {\n    return FormControlDirective;\n  })\n};\n/**\n * @description\n * Synchronizes a standalone `FormControl` instance to a form control element.\n *\n * Note that support for using the `ngModel` input property and `ngModelChange` event with reactive\n * form directives was deprecated in Angular v6 and is scheduled for removal in\n * a future version of Angular.\n * For details, see [Deprecated features](guide/deprecations#ngmodel-with-reactive-forms).\n *\n * @see [Reactive Forms Guide](guide/reactive-forms)\n * @see `FormControl`\n * @see `AbstractControl`\n *\n * @usageNotes\n *\n * The following example shows how to register a standalone control and set its value.\n *\n * {@example forms/ts/simpleFormControl/simple_form_control_example.ts region='Component'}\n *\n * @ngModule ReactiveFormsModule\n * @publicApi\n */\n\nvar FormControlDirective = /*#__PURE__*/function (_NgControl2) {\n  _inherits(FormControlDirective, _NgControl2);\n\n  var _super12 = _createSuper(FormControlDirective);\n\n  function FormControlDirective(validators, asyncValidators, valueAccessors, _ngModelWarningConfig) {\n    var _this31;\n\n    _classCallCheck(this, FormControlDirective);\n\n    _this31 = _super12.call(this);\n    _this31._ngModelWarningConfig = _ngModelWarningConfig;\n    /** @deprecated as of v6 */\n\n    _this31.update = new EventEmitter();\n    /**\n     * @description\n     * Instance property used to track whether an ngModel warning has been sent out for this\n     * particular `FormControlDirective` instance. Used to support warning config of \"always\".\n     *\n     * @internal\n     */\n\n    _this31._ngModelWarningSent = false;\n\n    _this31._setValidators(validators);\n\n    _this31._setAsyncValidators(asyncValidators);\n\n    _this31.valueAccessor = selectValueAccessor(_assertThisInitialized(_this31), valueAccessors);\n    return _this31;\n  }\n  /**\n   * @description\n   * Triggers a warning in dev mode that this input should not be used with reactive forms.\n   */\n\n\n  _createClass(FormControlDirective, [{\n    key: \"isDisabled\",\n    set: function set(isDisabled) {\n      if (typeof ngDevMode === 'undefined' || ngDevMode) {\n        ReactiveErrors.disabledAttrWarning();\n      }\n    }\n    /** @nodoc */\n\n  }, {\n    key: \"ngOnChanges\",\n    value: function ngOnChanges(changes) {\n      if (this._isControlChanged(changes)) {\n        setUpControl(this.form, this);\n\n        if (this.control.disabled && this.valueAccessor.setDisabledState) {\n          this.valueAccessor.setDisabledState(true);\n        }\n\n        this.form.updateValueAndValidity({\n          emitEvent: false\n        });\n      }\n\n      if (isPropertyUpdated(changes, this.viewModel)) {\n        _ngModelWarning('formControl', FormControlDirective, this, this._ngModelWarningConfig);\n\n        this.form.setValue(this.model);\n        this.viewModel = this.model;\n      }\n    }\n    /**\n     * @description\n     * Returns an array that represents the path from the top-level form to this control.\n     * Each index is the string name of the control on that level.\n     */\n\n  }, {\n    key: \"path\",\n    get: function get() {\n      return [];\n    }\n    /**\n     * @description\n     * The `FormControl` bound to this directive.\n     */\n\n  }, {\n    key: \"control\",\n    get: function get() {\n      return this.form;\n    }\n    /**\n     * @description\n     * Sets the new value for the view model and emits an `ngModelChange` event.\n     *\n     * @param newValue The new value for the view model.\n     */\n\n  }, {\n    key: \"viewToModelUpdate\",\n    value: function viewToModelUpdate(newValue) {\n      this.viewModel = newValue;\n      this.update.emit(newValue);\n    }\n  }, {\n    key: \"_isControlChanged\",\n    value: function _isControlChanged(changes) {\n      return changes.hasOwnProperty('form');\n    }\n  }]);\n\n  return FormControlDirective;\n}(NgControl);\n/**\n * @description\n * Static property used to track whether any ngModel warnings have been sent across\n * all instances of FormControlDirective. Used to support warning config of \"once\".\n *\n * @internal\n */\n\n\nFormControlDirective._ngModelWarningSentOnce = false;\nFormControlDirective.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[formControl]',\n    providers: [formControlBinding$1],\n    exportAs: 'ngForm'\n  }]\n}];\n\nFormControlDirective.ctorParameters = function () {\n  return [{\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_VALIDATORS]\n    }]\n  }, {\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_ASYNC_VALIDATORS]\n    }]\n  }, {\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_VALUE_ACCESSOR]\n    }]\n  }, {\n    type: String,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Inject,\n      args: [NG_MODEL_WITH_FORM_CONTROL_WARNING]\n    }]\n  }];\n};\n\nFormControlDirective.propDecorators = {\n  form: [{\n    type: Input,\n    args: ['formControl']\n  }],\n  isDisabled: [{\n    type: Input,\n    args: ['disabled']\n  }],\n  model: [{\n    type: Input,\n    args: ['ngModel']\n  }],\n  update: [{\n    type: Output,\n    args: ['ngModelChange']\n  }]\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar formDirectiveProvider$1 = {\n  provide: ControlContainer,\n  useExisting: forwardRef(function () {\n    return FormGroupDirective;\n  })\n};\n/**\n * @description\n *\n * Binds an existing `FormGroup` to a DOM element.\n *\n * This directive accepts an existing `FormGroup` instance. It will then use this\n * `FormGroup` instance to match any child `FormControl`, `FormGroup`,\n * and `FormArray` instances to child `FormControlName`, `FormGroupName`,\n * and `FormArrayName` directives.\n *\n * @see [Reactive Forms Guide](guide/reactive-forms)\n * @see `AbstractControl`\n *\n * ### Register Form Group\n *\n * The following example registers a `FormGroup` with first name and last name controls,\n * and listens for the *ngSubmit* event when the button is clicked.\n *\n * {@example forms/ts/simpleFormGroup/simple_form_group_example.ts region='Component'}\n *\n * @ngModule ReactiveFormsModule\n * @publicApi\n */\n\nvar FormGroupDirective = /*#__PURE__*/function (_ControlContainer3) {\n  _inherits(FormGroupDirective, _ControlContainer3);\n\n  var _super13 = _createSuper(FormGroupDirective);\n\n  function FormGroupDirective(validators, asyncValidators) {\n    var _this32;\n\n    _classCallCheck(this, FormGroupDirective);\n\n    _this32 = _super13.call(this);\n    _this32.validators = validators;\n    _this32.asyncValidators = asyncValidators;\n    /**\n     * @description\n     * Reports whether the form submission has been triggered.\n     */\n\n    _this32.submitted = false;\n    /**\n     * @description\n     * Tracks the list of added `FormControlName` instances\n     */\n\n    _this32.directives = [];\n    /**\n     * @description\n     * Tracks the `FormGroup` bound to this directive.\n     */\n\n    _this32.form = null;\n    /**\n     * @description\n     * Emits an event when the form submission has been triggered.\n     */\n\n    _this32.ngSubmit = new EventEmitter();\n\n    _this32._setValidators(validators);\n\n    _this32._setAsyncValidators(asyncValidators);\n\n    return _this32;\n  }\n  /** @nodoc */\n\n\n  _createClass(FormGroupDirective, [{\n    key: \"ngOnChanges\",\n    value: function ngOnChanges(changes) {\n      this._checkFormPresent();\n\n      if (changes.hasOwnProperty('form')) {\n        this._updateValidators();\n\n        this._updateDomValue();\n\n        this._updateRegistrations();\n\n        this._oldForm = this.form;\n      }\n    }\n    /**\n     * @description\n     * Returns this directive's instance.\n     */\n\n  }, {\n    key: \"formDirective\",\n    get: function get() {\n      return this;\n    }\n    /**\n     * @description\n     * Returns the `FormGroup` bound to this directive.\n     */\n\n  }, {\n    key: \"control\",\n    get: function get() {\n      return this.form;\n    }\n    /**\n     * @description\n     * Returns an array representing the path to this group. Because this directive\n     * always lives at the top level of a form, it always an empty array.\n     */\n\n  }, {\n    key: \"path\",\n    get: function get() {\n      return [];\n    }\n    /**\n     * @description\n     * Method that sets up the control directive in this group, re-calculates its value\n     * and validity, and adds the instance to the internal list of directives.\n     *\n     * @param dir The `FormControlName` directive instance.\n     */\n\n  }, {\n    key: \"addControl\",\n    value: function addControl(dir) {\n      var ctrl = this.form.get(dir.path);\n      setUpControl(ctrl, dir);\n      ctrl.updateValueAndValidity({\n        emitEvent: false\n      });\n      this.directives.push(dir);\n      return ctrl;\n    }\n    /**\n     * @description\n     * Retrieves the `FormControl` instance from the provided `FormControlName` directive\n     *\n     * @param dir The `FormControlName` directive instance.\n     */\n\n  }, {\n    key: \"getControl\",\n    value: function getControl(dir) {\n      return this.form.get(dir.path);\n    }\n    /**\n     * @description\n     * Removes the `FormControlName` instance from the internal list of directives\n     *\n     * @param dir The `FormControlName` directive instance.\n     */\n\n  }, {\n    key: \"removeControl\",\n    value: function removeControl(dir) {\n      removeListItem(this.directives, dir);\n    }\n    /**\n     * Adds a new `FormGroupName` directive instance to the form.\n     *\n     * @param dir The `FormGroupName` directive instance.\n     */\n\n  }, {\n    key: \"addFormGroup\",\n    value: function addFormGroup(dir) {\n      var ctrl = this.form.get(dir.path);\n      setUpFormContainer(ctrl, dir);\n      ctrl.updateValueAndValidity({\n        emitEvent: false\n      });\n    }\n    /**\n     * No-op method to remove the form group.\n     *\n     * @param dir The `FormGroupName` directive instance.\n     */\n\n  }, {\n    key: \"removeFormGroup\",\n    value: function removeFormGroup(dir) {}\n    /**\n     * @description\n     * Retrieves the `FormGroup` for a provided `FormGroupName` directive instance\n     *\n     * @param dir The `FormGroupName` directive instance.\n     */\n\n  }, {\n    key: \"getFormGroup\",\n    value: function getFormGroup(dir) {\n      return this.form.get(dir.path);\n    }\n    /**\n     * Adds a new `FormArrayName` directive instance to the form.\n     *\n     * @param dir The `FormArrayName` directive instance.\n     */\n\n  }, {\n    key: \"addFormArray\",\n    value: function addFormArray(dir) {\n      var ctrl = this.form.get(dir.path);\n      setUpFormContainer(ctrl, dir);\n      ctrl.updateValueAndValidity({\n        emitEvent: false\n      });\n    }\n    /**\n     * No-op method to remove the form array.\n     *\n     * @param dir The `FormArrayName` directive instance.\n     */\n\n  }, {\n    key: \"removeFormArray\",\n    value: function removeFormArray(dir) {}\n    /**\n     * @description\n     * Retrieves the `FormArray` for a provided `FormArrayName` directive instance.\n     *\n     * @param dir The `FormArrayName` directive instance.\n     */\n\n  }, {\n    key: \"getFormArray\",\n    value: function getFormArray(dir) {\n      return this.form.get(dir.path);\n    }\n    /**\n     * Sets the new value for the provided `FormControlName` directive.\n     *\n     * @param dir The `FormControlName` directive instance.\n     * @param value The new value for the directive's control.\n     */\n\n  }, {\n    key: \"updateModel\",\n    value: function updateModel(dir, value) {\n      var ctrl = this.form.get(dir.path);\n      ctrl.setValue(value);\n    }\n    /**\n     * @description\n     * Method called with the \"submit\" event is triggered on the form.\n     * Triggers the `ngSubmit` emitter to emit the \"submit\" event as its payload.\n     *\n     * @param $event The \"submit\" event object\n     */\n\n  }, {\n    key: \"onSubmit\",\n    value: function onSubmit($event) {\n      this.submitted = true;\n      syncPendingControls(this.form, this.directives);\n      this.ngSubmit.emit($event);\n      return false;\n    }\n    /**\n     * @description\n     * Method called when the \"reset\" event is triggered on the form.\n     */\n\n  }, {\n    key: \"onReset\",\n    value: function onReset() {\n      this.resetForm();\n    }\n    /**\n     * @description\n     * Resets the form to an initial value and resets its submitted status.\n     *\n     * @param value The new value for the form.\n     */\n\n  }, {\n    key: \"resetForm\",\n    value: function resetForm() {\n      var value = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : undefined;\n      this.form.reset(value);\n      this.submitted = false;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_updateDomValue\",\n    value: function _updateDomValue() {\n      var _this33 = this;\n\n      this.directives.forEach(function (dir) {\n        var newCtrl = _this33.form.get(dir.path);\n\n        if (dir.control !== newCtrl) {\n          // Note: the value of the `dir.control` may not be defined, for example when it's a first\n          // `FormControl` that is added to a `FormGroup` instance (via `addControl` call).\n          cleanUpControl(dir.control || null, dir);\n          if (newCtrl) setUpControl(newCtrl, dir);\n          dir.control = newCtrl;\n        }\n      });\n\n      this.form._updateTreeValidity({\n        emitEvent: false\n      });\n    }\n  }, {\n    key: \"_updateRegistrations\",\n    value: function _updateRegistrations() {\n      var _this34 = this;\n\n      this.form._registerOnCollectionChange(function () {\n        return _this34._updateDomValue();\n      });\n\n      if (this._oldForm) {\n        this._oldForm._registerOnCollectionChange(function () {});\n      }\n    }\n  }, {\n    key: \"_updateValidators\",\n    value: function _updateValidators() {\n      setUpValidators(this.form, this,\n      /* handleOnValidatorChange */\n      false);\n\n      if (this._oldForm) {\n        cleanUpValidators(this._oldForm, this,\n        /* handleOnValidatorChange */\n        false);\n      }\n    }\n  }, {\n    key: \"_checkFormPresent\",\n    value: function _checkFormPresent() {\n      if (!this.form && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n        ReactiveErrors.missingFormException();\n      }\n    }\n  }]);\n\n  return FormGroupDirective;\n}(ControlContainer);\n\nFormGroupDirective.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[formGroup]',\n    providers: [formDirectiveProvider$1],\n    host: {\n      '(submit)': 'onSubmit($event)',\n      '(reset)': 'onReset()'\n    },\n    exportAs: 'ngForm'\n  }]\n}];\n\nFormGroupDirective.ctorParameters = function () {\n  return [{\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_VALIDATORS]\n    }]\n  }, {\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_ASYNC_VALIDATORS]\n    }]\n  }];\n};\n\nFormGroupDirective.propDecorators = {\n  form: [{\n    type: Input,\n    args: ['formGroup']\n  }],\n  ngSubmit: [{\n    type: Output\n  }]\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar formGroupNameProvider = {\n  provide: ControlContainer,\n  useExisting: forwardRef(function () {\n    return FormGroupName;\n  })\n};\n/**\n * @description\n *\n * Syncs a nested `FormGroup` to a DOM element.\n *\n * This directive can only be used with a parent `FormGroupDirective`.\n *\n * It accepts the string name of the nested `FormGroup` to link, and\n * looks for a `FormGroup` registered with that name in the parent\n * `FormGroup` instance you passed into `FormGroupDirective`.\n *\n * Use nested form groups to validate a sub-group of a\n * form separately from the rest or to group the values of certain\n * controls into their own nested object.\n *\n * @see [Reactive Forms Guide](guide/reactive-forms)\n *\n * @usageNotes\n *\n * ### Access the group by name\n *\n * The following example uses the {@link AbstractControl#get get} method to access the\n * associated `FormGroup`\n *\n * ```ts\n *   this.form.get('name');\n * ```\n *\n * ### Access individual controls in the group\n *\n * The following example uses the {@link AbstractControl#get get} method to access\n * individual controls within the group using dot syntax.\n *\n * ```ts\n *   this.form.get('name.first');\n * ```\n *\n * ### Register a nested `FormGroup`.\n *\n * The following example registers a nested *name* `FormGroup` within an existing `FormGroup`,\n * and provides methods to retrieve the nested `FormGroup` and individual controls.\n *\n * {@example forms/ts/nestedFormGroup/nested_form_group_example.ts region='Component'}\n *\n * @ngModule ReactiveFormsModule\n * @publicApi\n */\n\nvar FormGroupName = /*#__PURE__*/function (_AbstractFormGroupDir2) {\n  _inherits(FormGroupName, _AbstractFormGroupDir2);\n\n  var _super14 = _createSuper(FormGroupName);\n\n  function FormGroupName(parent, validators, asyncValidators) {\n    var _this35;\n\n    _classCallCheck(this, FormGroupName);\n\n    _this35 = _super14.call(this);\n    _this35._parent = parent;\n\n    _this35._setValidators(validators);\n\n    _this35._setAsyncValidators(asyncValidators);\n\n    return _this35;\n  }\n  /** @internal */\n\n\n  _createClass(FormGroupName, [{\n    key: \"_checkParentType\",\n    value: function _checkParentType() {\n      if (_hasInvalidParent(this._parent) && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n        ReactiveErrors.groupParentException();\n      }\n    }\n  }]);\n\n  return FormGroupName;\n}(AbstractFormGroupDirective);\n\nFormGroupName.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[formGroupName]',\n    providers: [formGroupNameProvider]\n  }]\n}];\n\nFormGroupName.ctorParameters = function () {\n  return [{\n    type: ControlContainer,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Host\n    }, {\n      type: SkipSelf\n    }]\n  }, {\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_VALIDATORS]\n    }]\n  }, {\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_ASYNC_VALIDATORS]\n    }]\n  }];\n};\n\nFormGroupName.propDecorators = {\n  name: [{\n    type: Input,\n    args: ['formGroupName']\n  }]\n};\nvar formArrayNameProvider = {\n  provide: ControlContainer,\n  useExisting: forwardRef(function () {\n    return FormArrayName;\n  })\n};\n/**\n * @description\n *\n * Syncs a nested `FormArray` to a DOM element.\n *\n * This directive is designed to be used with a parent `FormGroupDirective` (selector:\n * `[formGroup]`).\n *\n * It accepts the string name of the nested `FormArray` you want to link, and\n * will look for a `FormArray` registered with that name in the parent\n * `FormGroup` instance you passed into `FormGroupDirective`.\n *\n * @see [Reactive Forms Guide](guide/reactive-forms)\n * @see `AbstractControl`\n *\n * @usageNotes\n *\n * ### Example\n *\n * {@example forms/ts/nestedFormArray/nested_form_array_example.ts region='Component'}\n *\n * @ngModule ReactiveFormsModule\n * @publicApi\n */\n\nvar FormArrayName = /*#__PURE__*/function (_ControlContainer4) {\n  _inherits(FormArrayName, _ControlContainer4);\n\n  var _super15 = _createSuper(FormArrayName);\n\n  function FormArrayName(parent, validators, asyncValidators) {\n    var _this36;\n\n    _classCallCheck(this, FormArrayName);\n\n    _this36 = _super15.call(this);\n    _this36._parent = parent;\n\n    _this36._setValidators(validators);\n\n    _this36._setAsyncValidators(asyncValidators);\n\n    return _this36;\n  }\n  /**\n   * A lifecycle method called when the directive's inputs are initialized. For internal use only.\n   * @throws If the directive does not have a valid parent.\n   * @nodoc\n   */\n\n\n  _createClass(FormArrayName, [{\n    key: \"ngOnInit\",\n    value: function ngOnInit() {\n      this._checkParentType();\n\n      this.formDirective.addFormArray(this);\n    }\n    /**\n     * A lifecycle method called before the directive's instance is destroyed. For internal use only.\n     * @nodoc\n     */\n\n  }, {\n    key: \"ngOnDestroy\",\n    value: function ngOnDestroy() {\n      if (this.formDirective) {\n        this.formDirective.removeFormArray(this);\n      }\n    }\n    /**\n     * @description\n     * The `FormArray` bound to this directive.\n     */\n\n  }, {\n    key: \"control\",\n    get: function get() {\n      return this.formDirective.getFormArray(this);\n    }\n    /**\n     * @description\n     * The top-level directive for this group if present, otherwise null.\n     */\n\n  }, {\n    key: \"formDirective\",\n    get: function get() {\n      return this._parent ? this._parent.formDirective : null;\n    }\n    /**\n     * @description\n     * Returns an array that represents the path from the top-level form to this control.\n     * Each index is the string name of the control on that level.\n     */\n\n  }, {\n    key: \"path\",\n    get: function get() {\n      return controlPath(this.name == null ? this.name : this.name.toString(), this._parent);\n    }\n  }, {\n    key: \"_checkParentType\",\n    value: function _checkParentType() {\n      if (_hasInvalidParent(this._parent) && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n        ReactiveErrors.arrayParentException();\n      }\n    }\n  }]);\n\n  return FormArrayName;\n}(ControlContainer);\n\nFormArrayName.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[formArrayName]',\n    providers: [formArrayNameProvider]\n  }]\n}];\n\nFormArrayName.ctorParameters = function () {\n  return [{\n    type: ControlContainer,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Host\n    }, {\n      type: SkipSelf\n    }]\n  }, {\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_VALIDATORS]\n    }]\n  }, {\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_ASYNC_VALIDATORS]\n    }]\n  }];\n};\n\nFormArrayName.propDecorators = {\n  name: [{\n    type: Input,\n    args: ['formArrayName']\n  }]\n};\n\nfunction _hasInvalidParent(parent) {\n  return !(parent instanceof FormGroupName) && !(parent instanceof FormGroupDirective) && !(parent instanceof FormArrayName);\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar controlNameBinding = {\n  provide: NgControl,\n  useExisting: forwardRef(function () {\n    return FormControlName;\n  })\n};\n/**\n * @description\n * Syncs a `FormControl` in an existing `FormGroup` to a form control\n * element by name.\n *\n * @see [Reactive Forms Guide](guide/reactive-forms)\n * @see `FormControl`\n * @see `AbstractControl`\n *\n * @usageNotes\n *\n * ### Register `FormControl` within a group\n *\n * The following example shows how to register multiple form controls within a form group\n * and set their value.\n *\n * {@example forms/ts/simpleFormGroup/simple_form_group_example.ts region='Component'}\n *\n * To see `formControlName` examples with different form control types, see:\n *\n * * Radio buttons: `RadioControlValueAccessor`\n * * Selects: `SelectControlValueAccessor`\n *\n * ### Use with ngModel is deprecated\n *\n * Support for using the `ngModel` input property and `ngModelChange` event with reactive\n * form directives has been deprecated in Angular v6 and is scheduled for removal in\n * a future version of Angular.\n *\n * For details, see [Deprecated features](guide/deprecations#ngmodel-with-reactive-forms).\n *\n * @ngModule ReactiveFormsModule\n * @publicApi\n */\n\nvar FormControlName = /*#__PURE__*/function (_NgControl3) {\n  _inherits(FormControlName, _NgControl3);\n\n  var _super16 = _createSuper(FormControlName);\n\n  function FormControlName(parent, validators, asyncValidators, valueAccessors, _ngModelWarningConfig) {\n    var _this37;\n\n    _classCallCheck(this, FormControlName);\n\n    _this37 = _super16.call(this);\n    _this37._ngModelWarningConfig = _ngModelWarningConfig;\n    _this37._added = false;\n    /** @deprecated as of v6 */\n\n    _this37.update = new EventEmitter();\n    /**\n     * @description\n     * Instance property used to track whether an ngModel warning has been sent out for this\n     * particular FormControlName instance. Used to support warning config of \"always\".\n     *\n     * @internal\n     */\n\n    _this37._ngModelWarningSent = false;\n    _this37._parent = parent;\n\n    _this37._setValidators(validators);\n\n    _this37._setAsyncValidators(asyncValidators);\n\n    _this37.valueAccessor = selectValueAccessor(_assertThisInitialized(_this37), valueAccessors);\n    return _this37;\n  }\n  /**\n   * @description\n   * Triggers a warning in dev mode that this input should not be used with reactive forms.\n   */\n\n\n  _createClass(FormControlName, [{\n    key: \"isDisabled\",\n    set: function set(isDisabled) {\n      if (typeof ngDevMode === 'undefined' || ngDevMode) {\n        ReactiveErrors.disabledAttrWarning();\n      }\n    }\n    /** @nodoc */\n\n  }, {\n    key: \"ngOnChanges\",\n    value: function ngOnChanges(changes) {\n      if (!this._added) this._setUpControl();\n\n      if (isPropertyUpdated(changes, this.viewModel)) {\n        _ngModelWarning('formControlName', FormControlName, this, this._ngModelWarningConfig);\n\n        this.viewModel = this.model;\n        this.formDirective.updateModel(this, this.model);\n      }\n    }\n    /** @nodoc */\n\n  }, {\n    key: \"ngOnDestroy\",\n    value: function ngOnDestroy() {\n      if (this.formDirective) {\n        this.formDirective.removeControl(this);\n      }\n    }\n    /**\n     * @description\n     * Sets the new value for the view model and emits an `ngModelChange` event.\n     *\n     * @param newValue The new value for the view model.\n     */\n\n  }, {\n    key: \"viewToModelUpdate\",\n    value: function viewToModelUpdate(newValue) {\n      this.viewModel = newValue;\n      this.update.emit(newValue);\n    }\n    /**\n     * @description\n     * Returns an array that represents the path from the top-level form to this control.\n     * Each index is the string name of the control on that level.\n     */\n\n  }, {\n    key: \"path\",\n    get: function get() {\n      return controlPath(this.name == null ? this.name : this.name.toString(), this._parent);\n    }\n    /**\n     * @description\n     * The top-level directive for this group if present, otherwise null.\n     */\n\n  }, {\n    key: \"formDirective\",\n    get: function get() {\n      return this._parent ? this._parent.formDirective : null;\n    }\n  }, {\n    key: \"_checkParentType\",\n    value: function _checkParentType() {\n      if (typeof ngDevMode === 'undefined' || ngDevMode) {\n        if (!(this._parent instanceof FormGroupName) && this._parent instanceof AbstractFormGroupDirective) {\n          ReactiveErrors.ngModelGroupException();\n        } else if (!(this._parent instanceof FormGroupName) && !(this._parent instanceof FormGroupDirective) && !(this._parent instanceof FormArrayName)) {\n          ReactiveErrors.controlParentException();\n        }\n      }\n    }\n  }, {\n    key: \"_setUpControl\",\n    value: function _setUpControl() {\n      this._checkParentType();\n\n      this.control = this.formDirective.addControl(this);\n\n      if (this.control.disabled && this.valueAccessor.setDisabledState) {\n        this.valueAccessor.setDisabledState(true);\n      }\n\n      this._added = true;\n    }\n  }]);\n\n  return FormControlName;\n}(NgControl);\n/**\n * @description\n * Static property used to track whether any ngModel warnings have been sent across\n * all instances of FormControlName. Used to support warning config of \"once\".\n *\n * @internal\n */\n\n\nFormControlName._ngModelWarningSentOnce = false;\nFormControlName.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[formControlName]',\n    providers: [controlNameBinding]\n  }]\n}];\n\nFormControlName.ctorParameters = function () {\n  return [{\n    type: ControlContainer,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Host\n    }, {\n      type: SkipSelf\n    }]\n  }, {\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_VALIDATORS]\n    }]\n  }, {\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_ASYNC_VALIDATORS]\n    }]\n  }, {\n    type: Array,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Self\n    }, {\n      type: Inject,\n      args: [NG_VALUE_ACCESSOR]\n    }]\n  }, {\n    type: String,\n    decorators: [{\n      type: Optional\n    }, {\n      type: Inject,\n      args: [NG_MODEL_WITH_FORM_CONTROL_WARNING]\n    }]\n  }];\n};\n\nFormControlName.propDecorators = {\n  name: [{\n    type: Input,\n    args: ['formControlName']\n  }],\n  isDisabled: [{\n    type: Input,\n    args: ['disabled']\n  }],\n  model: [{\n    type: Input,\n    args: ['ngModel']\n  }],\n  update: [{\n    type: Output,\n    args: ['ngModelChange']\n  }]\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @description\n * Provider which adds `RequiredValidator` to the `NG_VALIDATORS` multi-provider list.\n */\n\nvar REQUIRED_VALIDATOR = {\n  provide: NG_VALIDATORS,\n  useExisting: forwardRef(function () {\n    return RequiredValidator;\n  }),\n  multi: true\n};\n/**\n * @description\n * Provider which adds `CheckboxRequiredValidator` to the `NG_VALIDATORS` multi-provider list.\n */\n\nvar CHECKBOX_REQUIRED_VALIDATOR = {\n  provide: NG_VALIDATORS,\n  useExisting: forwardRef(function () {\n    return CheckboxRequiredValidator;\n  }),\n  multi: true\n};\n/**\n * @description\n * A directive that adds the `required` validator to any controls marked with the\n * `required` attribute. The directive is provided with the `NG_VALIDATORS` multi-provider list.\n *\n * @see [Form Validation](guide/form-validation)\n *\n * @usageNotes\n *\n * ### Adding a required validator using template-driven forms\n *\n * ```\n * <input name=\"fullName\" ngModel required>\n * ```\n *\n * @ngModule FormsModule\n * @ngModule ReactiveFormsModule\n * @publicApi\n */\n\nvar RequiredValidator = /*#__PURE__*/function () {\n  function RequiredValidator() {\n    _classCallCheck(this, RequiredValidator);\n\n    this._required = false;\n  }\n  /**\n   * @description\n   * Tracks changes to the required attribute bound to this directive.\n   */\n\n\n  _createClass(RequiredValidator, [{\n    key: \"required\",\n    get: function get() {\n      return this._required;\n    },\n    set: function set(value) {\n      this._required = value != null && value !== false && \"\".concat(value) !== 'false';\n      if (this._onChange) this._onChange();\n    }\n    /**\n     * Method that validates whether the control is empty.\n     * Returns the validation result if enabled, otherwise null.\n     * @nodoc\n     */\n\n  }, {\n    key: \"validate\",\n    value: function validate(control) {\n      return this.required ? Validators.required(control) : null;\n    }\n    /**\n     * Registers a callback function to call when the validator inputs change.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnValidatorChange\",\n    value: function registerOnValidatorChange(fn) {\n      this._onChange = fn;\n    }\n  }]);\n\n  return RequiredValidator;\n}();\n\nRequiredValidator.decorators = [{\n  type: Directive,\n  args: [{\n    selector: ':not([type=checkbox])[required][formControlName],:not([type=checkbox])[required][formControl],:not([type=checkbox])[required][ngModel]',\n    providers: [REQUIRED_VALIDATOR],\n    host: {\n      '[attr.required]': 'required ? \"\" : null'\n    }\n  }]\n}];\nRequiredValidator.propDecorators = {\n  required: [{\n    type: Input\n  }]\n};\n/**\n * A Directive that adds the `required` validator to checkbox controls marked with the\n * `required` attribute. The directive is provided with the `NG_VALIDATORS` multi-provider list.\n *\n * @see [Form Validation](guide/form-validation)\n *\n * @usageNotes\n *\n * ### Adding a required checkbox validator using template-driven forms\n *\n * The following example shows how to add a checkbox required validator to an input attached to an\n * ngModel binding.\n *\n * ```\n * <input type=\"checkbox\" name=\"active\" ngModel required>\n * ```\n *\n * @publicApi\n * @ngModule FormsModule\n * @ngModule ReactiveFormsModule\n */\n\nvar CheckboxRequiredValidator = /*#__PURE__*/function (_RequiredValidator) {\n  _inherits(CheckboxRequiredValidator, _RequiredValidator);\n\n  var _super17 = _createSuper(CheckboxRequiredValidator);\n\n  function CheckboxRequiredValidator() {\n    _classCallCheck(this, CheckboxRequiredValidator);\n\n    return _super17.apply(this, arguments);\n  }\n\n  _createClass(CheckboxRequiredValidator, [{\n    key: \"validate\",\n    value:\n    /**\n     * Method that validates whether or not the checkbox has been checked.\n     * Returns the validation result if enabled, otherwise null.\n     * @nodoc\n     */\n    function validate(control) {\n      return this.required ? Validators.requiredTrue(control) : null;\n    }\n  }]);\n\n  return CheckboxRequiredValidator;\n}(RequiredValidator);\n\nCheckboxRequiredValidator.decorators = [{\n  type: Directive,\n  args: [{\n    selector: 'input[type=checkbox][required][formControlName],input[type=checkbox][required][formControl],input[type=checkbox][required][ngModel]',\n    providers: [CHECKBOX_REQUIRED_VALIDATOR],\n    host: {\n      '[attr.required]': 'required ? \"\" : null'\n    }\n  }]\n}];\n/**\n * @description\n * Provider which adds `EmailValidator` to the `NG_VALIDATORS` multi-provider list.\n */\n\nvar EMAIL_VALIDATOR = {\n  provide: NG_VALIDATORS,\n  useExisting: forwardRef(function () {\n    return EmailValidator;\n  }),\n  multi: true\n};\n/**\n * A directive that adds the `email` validator to controls marked with the\n * `email` attribute. The directive is provided with the `NG_VALIDATORS` multi-provider list.\n *\n * @see [Form Validation](guide/form-validation)\n *\n * @usageNotes\n *\n * ### Adding an email validator\n *\n * The following example shows how to add an email validator to an input attached to an ngModel\n * binding.\n *\n * ```\n * <input type=\"email\" name=\"email\" ngModel email>\n * <input type=\"email\" name=\"email\" ngModel email=\"true\">\n * <input type=\"email\" name=\"email\" ngModel [email]=\"true\">\n * ```\n *\n * @publicApi\n * @ngModule FormsModule\n * @ngModule ReactiveFormsModule\n */\n\nvar EmailValidator = /*#__PURE__*/function () {\n  function EmailValidator() {\n    _classCallCheck(this, EmailValidator);\n\n    this._enabled = false;\n  }\n  /**\n   * @description\n   * Tracks changes to the email attribute bound to this directive.\n   */\n\n\n  _createClass(EmailValidator, [{\n    key: \"email\",\n    set: function set(value) {\n      this._enabled = value === '' || value === true || value === 'true';\n      if (this._onChange) this._onChange();\n    }\n    /**\n     * Method that validates whether an email address is valid.\n     * Returns the validation result if enabled, otherwise null.\n     * @nodoc\n     */\n\n  }, {\n    key: \"validate\",\n    value: function validate(control) {\n      return this._enabled ? Validators.email(control) : null;\n    }\n    /**\n     * Registers a callback function to call when the validator inputs change.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnValidatorChange\",\n    value: function registerOnValidatorChange(fn) {\n      this._onChange = fn;\n    }\n  }]);\n\n  return EmailValidator;\n}();\n\nEmailValidator.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[email][formControlName],[email][formControl],[email][ngModel]',\n    providers: [EMAIL_VALIDATOR]\n  }]\n}];\nEmailValidator.propDecorators = {\n  email: [{\n    type: Input\n  }]\n};\n/**\n * @description\n * Provider which adds `MinLengthValidator` to the `NG_VALIDATORS` multi-provider list.\n */\n\nvar MIN_LENGTH_VALIDATOR = {\n  provide: NG_VALIDATORS,\n  useExisting: forwardRef(function () {\n    return MinLengthValidator;\n  }),\n  multi: true\n};\n/**\n * A directive that adds minimum length validation to controls marked with the\n * `minlength` attribute. The directive is provided with the `NG_VALIDATORS` multi-provider list.\n *\n * @see [Form Validation](guide/form-validation)\n *\n * @usageNotes\n *\n * ### Adding a minimum length validator\n *\n * The following example shows how to add a minimum length validator to an input attached to an\n * ngModel binding.\n *\n * ```html\n * <input name=\"firstName\" ngModel minlength=\"4\">\n * ```\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\n\nvar MinLengthValidator = /*#__PURE__*/function () {\n  function MinLengthValidator() {\n    _classCallCheck(this, MinLengthValidator);\n\n    this._validator = Validators.nullValidator;\n  }\n  /** @nodoc */\n\n\n  _createClass(MinLengthValidator, [{\n    key: \"ngOnChanges\",\n    value: function ngOnChanges(changes) {\n      if ('minlength' in changes) {\n        this._createValidator();\n\n        if (this._onChange) this._onChange();\n      }\n    }\n    /**\n     * Method that validates whether the value meets a minimum length requirement.\n     * Returns the validation result if enabled, otherwise null.\n     * @nodoc\n     */\n\n  }, {\n    key: \"validate\",\n    value: function validate(control) {\n      return this.minlength == null ? null : this._validator(control);\n    }\n    /**\n     * Registers a callback function to call when the validator inputs change.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnValidatorChange\",\n    value: function registerOnValidatorChange(fn) {\n      this._onChange = fn;\n    }\n  }, {\n    key: \"_createValidator\",\n    value: function _createValidator() {\n      this._validator = Validators.minLength(typeof this.minlength === 'number' ? this.minlength : parseInt(this.minlength, 10));\n    }\n  }]);\n\n  return MinLengthValidator;\n}();\n\nMinLengthValidator.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[minlength][formControlName],[minlength][formControl],[minlength][ngModel]',\n    providers: [MIN_LENGTH_VALIDATOR],\n    host: {\n      '[attr.minlength]': 'minlength ? minlength : null'\n    }\n  }]\n}];\nMinLengthValidator.propDecorators = {\n  minlength: [{\n    type: Input\n  }]\n};\n/**\n * @description\n * Provider which adds `MaxLengthValidator` to the `NG_VALIDATORS` multi-provider list.\n */\n\nvar MAX_LENGTH_VALIDATOR = {\n  provide: NG_VALIDATORS,\n  useExisting: forwardRef(function () {\n    return MaxLengthValidator;\n  }),\n  multi: true\n};\n/**\n * A directive that adds max length validation to controls marked with the\n * `maxlength` attribute. The directive is provided with the `NG_VALIDATORS` multi-provider list.\n *\n * @see [Form Validation](guide/form-validation)\n *\n * @usageNotes\n *\n * ### Adding a maximum length validator\n *\n * The following example shows how to add a maximum length validator to an input attached to an\n * ngModel binding.\n *\n * ```html\n * <input name=\"firstName\" ngModel maxlength=\"25\">\n * ```\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\n\nvar MaxLengthValidator = /*#__PURE__*/function () {\n  function MaxLengthValidator() {\n    _classCallCheck(this, MaxLengthValidator);\n\n    this._validator = Validators.nullValidator;\n  }\n  /** @nodoc */\n\n\n  _createClass(MaxLengthValidator, [{\n    key: \"ngOnChanges\",\n    value: function ngOnChanges(changes) {\n      if ('maxlength' in changes) {\n        this._createValidator();\n\n        if (this._onChange) this._onChange();\n      }\n    }\n    /**\n     * Method that validates whether the value exceeds the maximum length requirement.\n     * @nodoc\n     */\n\n  }, {\n    key: \"validate\",\n    value: function validate(control) {\n      return this.maxlength != null ? this._validator(control) : null;\n    }\n    /**\n     * Registers a callback function to call when the validator inputs change.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnValidatorChange\",\n    value: function registerOnValidatorChange(fn) {\n      this._onChange = fn;\n    }\n  }, {\n    key: \"_createValidator\",\n    value: function _createValidator() {\n      this._validator = Validators.maxLength(typeof this.maxlength === 'number' ? this.maxlength : parseInt(this.maxlength, 10));\n    }\n  }]);\n\n  return MaxLengthValidator;\n}();\n\nMaxLengthValidator.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[maxlength][formControlName],[maxlength][formControl],[maxlength][ngModel]',\n    providers: [MAX_LENGTH_VALIDATOR],\n    host: {\n      '[attr.maxlength]': 'maxlength ? maxlength : null'\n    }\n  }]\n}];\nMaxLengthValidator.propDecorators = {\n  maxlength: [{\n    type: Input\n  }]\n};\n/**\n * @description\n * Provider which adds `PatternValidator` to the `NG_VALIDATORS` multi-provider list.\n */\n\nvar PATTERN_VALIDATOR = {\n  provide: NG_VALIDATORS,\n  useExisting: forwardRef(function () {\n    return PatternValidator;\n  }),\n  multi: true\n};\n/**\n * @description\n * A directive that adds regex pattern validation to controls marked with the\n * `pattern` attribute. The regex must match the entire control value.\n * The directive is provided with the `NG_VALIDATORS` multi-provider list.\n *\n * @see [Form Validation](guide/form-validation)\n *\n * @usageNotes\n *\n * ### Adding a pattern validator\n *\n * The following example shows how to add a pattern validator to an input attached to an\n * ngModel binding.\n *\n * ```html\n * <input name=\"firstName\" ngModel pattern=\"[a-zA-Z ]*\">\n * ```\n *\n * @ngModule ReactiveFormsModule\n * @ngModule FormsModule\n * @publicApi\n */\n\nvar PatternValidator = /*#__PURE__*/function () {\n  function PatternValidator() {\n    _classCallCheck(this, PatternValidator);\n\n    this._validator = Validators.nullValidator;\n  }\n  /** @nodoc */\n\n\n  _createClass(PatternValidator, [{\n    key: \"ngOnChanges\",\n    value: function ngOnChanges(changes) {\n      if ('pattern' in changes) {\n        this._createValidator();\n\n        if (this._onChange) this._onChange();\n      }\n    }\n    /**\n     * Method that validates whether the value matches the the pattern requirement.\n     * @nodoc\n     */\n\n  }, {\n    key: \"validate\",\n    value: function validate(control) {\n      return this._validator(control);\n    }\n    /**\n     * Registers a callback function to call when the validator inputs change.\n     * @nodoc\n     */\n\n  }, {\n    key: \"registerOnValidatorChange\",\n    value: function registerOnValidatorChange(fn) {\n      this._onChange = fn;\n    }\n  }, {\n    key: \"_createValidator\",\n    value: function _createValidator() {\n      this._validator = Validators.pattern(this.pattern);\n    }\n  }]);\n\n  return PatternValidator;\n}();\n\nPatternValidator.decorators = [{\n  type: Directive,\n  args: [{\n    selector: '[pattern][formControlName],[pattern][formControl],[pattern][ngModel]',\n    providers: [PATTERN_VALIDATOR],\n    host: {\n      '[attr.pattern]': 'pattern ? pattern : null'\n    }\n  }]\n}];\nPatternValidator.propDecorators = {\n  pattern: [{\n    type: Input\n  }]\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar SHARED_FORM_DIRECTIVES = [ɵNgNoValidate, NgSelectOption, ɵNgSelectMultipleOption, DefaultValueAccessor, NumberValueAccessor, RangeValueAccessor, CheckboxControlValueAccessor, SelectControlValueAccessor, SelectMultipleControlValueAccessor, RadioControlValueAccessor, NgControlStatus, NgControlStatusGroup, RequiredValidator, MinLengthValidator, MaxLengthValidator, PatternValidator, CheckboxRequiredValidator, EmailValidator];\nvar TEMPLATE_DRIVEN_DIRECTIVES = [NgModel, NgModelGroup, NgForm];\nvar REACTIVE_DRIVEN_DIRECTIVES = [FormControlDirective, FormGroupDirective, FormControlName, FormGroupName, FormArrayName];\n/**\n * Internal module used for sharing directives between FormsModule and ReactiveFormsModule\n */\n\nvar ɵInternalFormsSharedModule = /*#__PURE__*/_createClass(function ɵInternalFormsSharedModule() {\n  _classCallCheck(this, ɵInternalFormsSharedModule);\n});\n\nɵInternalFormsSharedModule.decorators = [{\n  type: NgModule,\n  args: [{\n    declarations: SHARED_FORM_DIRECTIVES,\n    exports: SHARED_FORM_DIRECTIVES\n  }]\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nfunction isAbstractControlOptions(options) {\n  return options.asyncValidators !== undefined || options.validators !== undefined || options.updateOn !== undefined;\n}\n/**\n * @description\n * Creates an `AbstractControl` from a user-specified configuration.\n *\n * The `FormBuilder` provides syntactic sugar that shortens creating instances of a `FormControl`,\n * `FormGroup`, or `FormArray`. It reduces the amount of boilerplate needed to build complex\n * forms.\n *\n * @see [Reactive Forms Guide](/guide/reactive-forms)\n *\n * @publicApi\n */\n\n\nvar FormBuilder = /*#__PURE__*/function () {\n  function FormBuilder() {\n    _classCallCheck(this, FormBuilder);\n  }\n\n  _createClass(FormBuilder, [{\n    key: \"group\",\n    value: function group(controlsConfig) {\n      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n\n      var controls = this._reduceControls(controlsConfig);\n\n      var validators = null;\n      var asyncValidators = null;\n      var updateOn = undefined;\n\n      if (options != null) {\n        if (isAbstractControlOptions(options)) {\n          // `options` are `AbstractControlOptions`\n          validators = options.validators != null ? options.validators : null;\n          asyncValidators = options.asyncValidators != null ? options.asyncValidators : null;\n          updateOn = options.updateOn != null ? options.updateOn : undefined;\n        } else {\n          // `options` are legacy form group options\n          validators = options['validator'] != null ? options['validator'] : null;\n          asyncValidators = options['asyncValidator'] != null ? options['asyncValidator'] : null;\n        }\n      }\n\n      return new FormGroup(controls, {\n        asyncValidators: asyncValidators,\n        updateOn: updateOn,\n        validators: validators\n      });\n    }\n    /**\n     * @description\n     * Construct a new `FormControl` with the given state, validators and options.\n     *\n     * @param formState Initializes the control with an initial state value, or\n     * with an object that contains both a value and a disabled status.\n     *\n     * @param validatorOrOpts A synchronous validator function, or an array of\n     * such functions, or an `AbstractControlOptions` object that contains\n     * validation functions and a validation trigger.\n     *\n     * @param asyncValidator A single async validator or array of async validator\n     * functions.\n     *\n     * @usageNotes\n     *\n     * ### Initialize a control as disabled\n     *\n     * The following example returns a control with an initial value in a disabled state.\n     *\n     * <code-example path=\"forms/ts/formBuilder/form_builder_example.ts\" region=\"disabled-control\">\n     * </code-example>\n     */\n\n  }, {\n    key: \"control\",\n    value: function control(formState, validatorOrOpts, asyncValidator) {\n      return new FormControl(formState, validatorOrOpts, asyncValidator);\n    }\n    /**\n     * Constructs a new `FormArray` from the given array of configurations,\n     * validators and options.\n     *\n     * @param controlsConfig An array of child controls or control configs. Each\n     * child control is given an index when it is registered.\n     *\n     * @param validatorOrOpts A synchronous validator function, or an array of\n     * such functions, or an `AbstractControlOptions` object that contains\n     * validation functions and a validation trigger.\n     *\n     * @param asyncValidator A single async validator or array of async validator\n     * functions.\n     */\n\n  }, {\n    key: \"array\",\n    value: function array(controlsConfig, validatorOrOpts, asyncValidator) {\n      var _this38 = this;\n\n      var controls = controlsConfig.map(function (c) {\n        return _this38._createControl(c);\n      });\n      return new FormArray(controls, validatorOrOpts, asyncValidator);\n    }\n    /** @internal */\n\n  }, {\n    key: \"_reduceControls\",\n    value: function _reduceControls(controlsConfig) {\n      var _this39 = this;\n\n      var controls = {};\n      Object.keys(controlsConfig).forEach(function (controlName) {\n        controls[controlName] = _this39._createControl(controlsConfig[controlName]);\n      });\n      return controls;\n    }\n    /** @internal */\n\n  }, {\n    key: \"_createControl\",\n    value: function _createControl(controlConfig) {\n      if (controlConfig instanceof FormControl || controlConfig instanceof FormGroup || controlConfig instanceof FormArray) {\n        return controlConfig;\n      } else if (Array.isArray(controlConfig)) {\n        var value = controlConfig[0];\n        var validator = controlConfig.length > 1 ? controlConfig[1] : null;\n        var asyncValidator = controlConfig.length > 2 ? controlConfig[2] : null;\n        return this.control(value, validator, asyncValidator);\n      } else {\n        return this.control(controlConfig);\n      }\n    }\n  }]);\n\n  return FormBuilder;\n}();\n\nFormBuilder.decorators = [{\n  type: Injectable\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @publicApi\n */\n\nvar VERSION = new Version('11.0.3');\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Exports the required providers and directives for template-driven forms,\n * making them available for import by NgModules that import this module.\n *\n * @see [Forms Overview](/guide/forms-overview)\n * @see [Template-driven Forms Guide](/guide/forms)\n *\n * @publicApi\n */\n\nvar FormsModule = /*#__PURE__*/_createClass(function FormsModule() {\n  _classCallCheck(this, FormsModule);\n});\n\nFormsModule.decorators = [{\n  type: NgModule,\n  args: [{\n    declarations: TEMPLATE_DRIVEN_DIRECTIVES,\n    providers: [RadioControlRegistry],\n    exports: [ɵInternalFormsSharedModule, TEMPLATE_DRIVEN_DIRECTIVES]\n  }]\n}];\n/**\n * Exports the required infrastructure and directives for reactive forms,\n * making them available for import by NgModules that import this module.\n *\n * @see [Forms Overview](guide/forms-overview)\n * @see [Reactive Forms Guide](guide/reactive-forms)\n *\n * @publicApi\n */\n\nvar ReactiveFormsModule = /*#__PURE__*/function () {\n  function ReactiveFormsModule() {\n    _classCallCheck(this, ReactiveFormsModule);\n  }\n\n  _createClass(ReactiveFormsModule, null, [{\n    key: \"withConfig\",\n    value:\n    /**\n     * @description\n     * Provides options for configuring the reactive forms module.\n     *\n     * @param opts An object of configuration options\n     * * `warnOnNgModelWithFormControl` Configures when to emit a warning when an `ngModel`\n     * binding is used with reactive form directives.\n     */\n    function withConfig(opts) {\n      return {\n        ngModule: ReactiveFormsModule,\n        providers: [{\n          provide: NG_MODEL_WITH_FORM_CONTROL_WARNING,\n          useValue: opts.warnOnNgModelWithFormControl\n        }]\n      };\n    }\n  }]);\n\n  return ReactiveFormsModule;\n}();\n\nReactiveFormsModule.decorators = [{\n  type: NgModule,\n  args: [{\n    declarations: [REACTIVE_DRIVEN_DIRECTIVES],\n    providers: [FormBuilder, RadioControlRegistry],\n    exports: [ɵInternalFormsSharedModule, REACTIVE_DRIVEN_DIRECTIVES]\n  }]\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// This file only reexports content of the `src` folder. Keep it that way.\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { AbstractControl, AbstractControlDirective, AbstractFormGroupDirective, COMPOSITION_BUFFER_MODE, CheckboxControlValueAccessor, CheckboxRequiredValidator, ControlContainer, DefaultValueAccessor, EmailValidator, FormArray, FormArrayName, FormBuilder, FormControl, FormControlDirective, FormControlName, FormGroup, FormGroupDirective, FormGroupName, FormsModule, MaxLengthValidator, MinLengthValidator, NG_ASYNC_VALIDATORS, NG_VALIDATORS, NG_VALUE_ACCESSOR, NgControl, NgControlStatus, NgControlStatusGroup, NgForm, NgModel, NgModelGroup, NgSelectOption, NumberValueAccessor, PatternValidator, RadioControlValueAccessor, RangeValueAccessor, ReactiveFormsModule, RequiredValidator, SelectControlValueAccessor, SelectMultipleControlValueAccessor, VERSION, Validators, ɵInternalFormsSharedModule, ɵNgNoValidate, ɵNgSelectMultipleOption, SHARED_FORM_DIRECTIVES as ɵangular_packages_forms_forms_a, TEMPLATE_DRIVEN_DIRECTIVES as ɵangular_packages_forms_forms_b, CHECKBOX_REQUIRED_VALIDATOR as ɵangular_packages_forms_forms_ba, EMAIL_VALIDATOR as ɵangular_packages_forms_forms_bb, MIN_LENGTH_VALIDATOR as ɵangular_packages_forms_forms_bc, MAX_LENGTH_VALIDATOR as ɵangular_packages_forms_forms_bd, PATTERN_VALIDATOR as ɵangular_packages_forms_forms_be, REACTIVE_DRIVEN_DIRECTIVES as ɵangular_packages_forms_forms_c, ɵInternalFormsSharedModule as ɵangular_packages_forms_forms_d, CHECKBOX_VALUE_ACCESSOR as ɵangular_packages_forms_forms_e, DEFAULT_VALUE_ACCESSOR as ɵangular_packages_forms_forms_f, AbstractControlStatus as ɵangular_packages_forms_forms_g, ngControlStatusHost as ɵangular_packages_forms_forms_h, formDirectiveProvider as ɵangular_packages_forms_forms_i, formControlBinding as ɵangular_packages_forms_forms_j, modelGroupProvider as ɵangular_packages_forms_forms_k, NUMBER_VALUE_ACCESSOR as ɵangular_packages_forms_forms_l, RADIO_VALUE_ACCESSOR as ɵangular_packages_forms_forms_m, RadioControlRegistry as ɵangular_packages_forms_forms_n, RANGE_VALUE_ACCESSOR as ɵangular_packages_forms_forms_o, NG_MODEL_WITH_FORM_CONTROL_WARNING as ɵangular_packages_forms_forms_p, formControlBinding$1 as ɵangular_packages_forms_forms_q, controlNameBinding as ɵangular_packages_forms_forms_r, formDirectiveProvider$1 as ɵangular_packages_forms_forms_s, formGroupNameProvider as ɵangular_packages_forms_forms_t, formArrayNameProvider as ɵangular_packages_forms_forms_u, SELECT_VALUE_ACCESSOR as ɵangular_packages_forms_forms_v, SELECT_MULTIPLE_VALUE_ACCESSOR as ɵangular_packages_forms_forms_w, ɵNgSelectMultipleOption as ɵangular_packages_forms_forms_x, ɵNgNoValidate as ɵangular_packages_forms_forms_y, REQUIRED_VALIDATOR as ɵangular_packages_forms_forms_z };","var global = require('../internals/global');\nvar isCallable = require('../internals/is-callable');\nvar hasOwn = require('../internals/has-own-property');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar setGlobal = require('../internals/set-global');\nvar inspectSource = require('../internals/inspect-source');\nvar InternalStateModule = require('../internals/internal-state');\nvar CONFIGURABLE_FUNCTION_NAME = require('../internals/function-name').CONFIGURABLE;\n\nvar getInternalState = InternalStateModule.get;\nvar enforceInternalState = InternalStateModule.enforce;\nvar TEMPLATE = String(String).split('String');\n\n(module.exports = function (O, key, value, options) {\n  var unsafe = options ? !!options.unsafe : false;\n  var simple = options ? !!options.enumerable : false;\n  var noTargetGet = options ? !!options.noTargetGet : false;\n  var name = options && options.name !== undefined ? options.name : key;\n  var state;\n  if (isCallable(value)) {\n    if (String(name).slice(0, 7) === 'Symbol(') {\n      name = '[' + String(name).replace(/^Symbol\\(([^)]*)\\)/, '$1') + ']';\n    }\n    if (!hasOwn(value, 'name') || (CONFIGURABLE_FUNCTION_NAME && value.name !== name)) {\n      createNonEnumerableProperty(value, 'name', name);\n    }\n    state = enforceInternalState(value);\n    if (!state.source) {\n      state.source = TEMPLATE.join(typeof name == 'string' ? name : '');\n    }\n  }\n  if (O === global) {\n    if (simple) O[key] = value;\n    else setGlobal(key, value);\n    return;\n  } else if (!unsafe) {\n    delete O[key];\n  } else if (!noTargetGet && O[key]) {\n    simple = true;\n  }\n  if (simple) O[key] = value;\n  else createNonEnumerableProperty(O, key, value);\n// add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative\n})(Function.prototype, 'toString', function toString() {\n  return isCallable(this) && getInternalState(this).source || inspectSource(this);\n});\n","var global = require('../internals/global');\nvar isCallable = require('../internals/is-callable');\nvar tryToString = require('../internals/try-to-string');\n\nvar TypeError = global.TypeError;\n\n// `Assert: IsCallable(argument) is true`\nmodule.exports = function (argument) {\n  if (isCallable(argument)) return argument;\n  throw TypeError(tryToString(argument) + ' is not a function');\n};\n","var DESCRIPTORS = require('../internals/descriptors');\nvar call = require('../internals/function-call');\nvar propertyIsEnumerableModule = require('../internals/object-property-is-enumerable');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar toPropertyKey = require('../internals/to-property-key');\nvar hasOwn = require('../internals/has-own-property');\nvar IE8_DOM_DEFINE = require('../internals/ie8-dom-define');\n\n// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\nvar $getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\n\n// `Object.getOwnPropertyDescriptor` method\n// https://tc39.es/ecma262/#sec-object.getownpropertydescriptor\nexports.f = DESCRIPTORS ? $getOwnPropertyDescriptor : function getOwnPropertyDescriptor(O, P) {\n  O = toIndexedObject(O);\n  P = toPropertyKey(P);\n  if (IE8_DOM_DEFINE) try {\n    return $getOwnPropertyDescriptor(O, P);\n  } catch (error) { /* empty */ }\n  if (hasOwn(O, P)) return createPropertyDescriptor(!call(propertyIsEnumerableModule.f, O, P), O[P]);\n};\n","/** PURE_IMPORTS_START _Observable,_Subscription PURE_IMPORTS_END */\nimport { Observable } from '../Observable';\nimport { Subscription } from '../Subscription';\nexport function scheduleArray(input, scheduler) {\n  return new Observable(function (subscriber) {\n    var sub = new Subscription();\n    var i = 0;\n    sub.add(scheduler.schedule(function () {\n      if (i === input.length) {\n        subscriber.complete();\n        return;\n      }\n\n      subscriber.next(input[i++]);\n\n      if (!subscriber.closed) {\n        sub.add(this.schedule());\n      }\n    }));\n    return sub;\n  });\n}","function _typeof(obj) { \"@babel/helpers - typeof\"; return _typeof = \"function\" == typeof Symbol && \"symbol\" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && \"function\" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }, _typeof(obj); }\n\n/** PURE_IMPORTS_START  PURE_IMPORTS_END */\nexport function isObject(x) {\n  return x !== null && _typeof(x) === 'object';\n}","/** PURE_IMPORTS_START  PURE_IMPORTS_END */\nexport function isScheduler(value) {\n  return value && typeof value.schedule === 'function';\n}","/** PURE_IMPORTS_START _config,_util_hostReportError PURE_IMPORTS_END */\nimport { config } from './config';\nimport { hostReportError } from './util/hostReportError';\nexport var empty = {\n  closed: true,\n  next: function next(value) {},\n  error: function error(err) {\n    if (config.useDeprecatedSynchronousErrorHandling) {\n      throw err;\n    } else {\n      hostReportError(err);\n    }\n  },\n  complete: function complete() {}\n};","/** PURE_IMPORTS_START tslib,_Subscriber PURE_IMPORTS_END */\nimport * as tslib_1 from \"tslib\";\nimport { Subscriber } from '../Subscriber';\nexport function map(project, thisArg) {\n  return function mapOperation(source) {\n    if (typeof project !== 'function') {\n      throw new TypeError('argument is not a function. Are you looking for `mapTo()`?');\n    }\n\n    return source.lift(new MapOperator(project, thisArg));\n  };\n}\n\nvar MapOperator = /*@__PURE__*/function () {\n  function MapOperator(project, thisArg) {\n    this.project = project;\n    this.thisArg = thisArg;\n  }\n\n  MapOperator.prototype.call = function (subscriber, source) {\n    return source.subscribe(new MapSubscriber(subscriber, this.project, this.thisArg));\n  };\n\n  return MapOperator;\n}();\n\nexport { MapOperator };\n\nvar MapSubscriber = /*@__PURE__*/function (_super) {\n  tslib_1.__extends(MapSubscriber, _super);\n\n  function MapSubscriber(destination, project, thisArg) {\n    var _this = _super.call(this, destination) || this;\n\n    _this.project = project;\n    _this.count = 0;\n    _this.thisArg = thisArg || _this;\n    return _this;\n  }\n\n  MapSubscriber.prototype._next = function (value) {\n    var result;\n\n    try {\n      result = this.project.call(this.thisArg, value, this.count++);\n    } catch (err) {\n      this.destination.error(err);\n      return;\n    }\n\n    this.destination.next(result);\n  };\n\n  return MapSubscriber;\n}(Subscriber);","function _typeof(obj) { \"@babel/helpers - typeof\"; return _typeof = \"function\" == typeof Symbol && \"symbol\" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && \"function\" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }, _typeof(obj); }\n\nvar g; // This works in non-strict mode\n\ng = function () {\n  return this;\n}();\n\ntry {\n  // This works if eval is allowed (see CSP)\n  g = g || new Function(\"return this\")();\n} catch (e) {\n  // This works if the window reference is available\n  if ((typeof window === \"undefined\" ? \"undefined\" : _typeof(window)) === \"object\") g = window;\n} // g can still be undefined, but nothing to do about it...\n// We return undefined, instead of nothing here, so it's\n// easier to handle this case. if(!global) { ...}\n\n\nmodule.exports = g;","var fails = require('../internals/fails');\n\nmodule.exports = !fails(function () {\n  var test = (function () { /* empty */ }).bind();\n  // eslint-disable-next-line no-prototype-builtins -- safe\n  return typeof test != 'function' || test.hasOwnProperty('prototype');\n});\n","module.exports = function (bitmap, value) {\n  return {\n    enumerable: !(bitmap & 1),\n    configurable: !(bitmap & 2),\n    writable: !(bitmap & 4),\n    value: value\n  };\n};\n","var uncurryThis = require('../internals/function-uncurry-this');\n\nvar toString = uncurryThis({}.toString);\nvar stringSlice = uncurryThis(''.slice);\n\nmodule.exports = function (it) {\n  return stringSlice(toString(it), 8, -1);\n};\n","// toObject with fallback for non-array-like ES3 strings\nvar IndexedObject = require('../internals/indexed-object');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\n\nmodule.exports = function (it) {\n  return IndexedObject(requireObjectCoercible(it));\n};\n","var toLength = require('../internals/to-length');\n\n// `LengthOfArrayLike` abstract operation\n// https://tc39.es/ecma262/#sec-lengthofarraylike\nmodule.exports = function (obj) {\n  return toLength(obj.length);\n};\n","/** PURE_IMPORTS_START _mergeMap PURE_IMPORTS_END */\nimport { mergeMap } from './mergeMap';\nexport function concatMap(project, resultSelector) {\n  return mergeMap(project, resultSelector, 1);\n}","function _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function\"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); Object.defineProperty(subClass, \"prototype\", { writable: false }); if (superClass) _setPrototypeOf(subClass, superClass); }\n\nfunction _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }\n\nfunction _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }\n\nfunction _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === \"object\" || typeof call === \"function\")) { return call; } else if (call !== void 0) { throw new TypeError(\"Derived constructors may only return object or undefined\"); } return _assertThisInitialized(self); }\n\nfunction _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return self; }\n\nfunction _isNativeReflectConstruct() { if (typeof Reflect === \"undefined\" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === \"function\") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }\n\nfunction _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }\n\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; return _typeof = \"function\" == typeof Symbol && \"symbol\" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && \"function\" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }, _typeof(obj); }\n\nfunction _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }\n\nfunction _nonIterableRest() { throw new TypeError(\"Invalid attempt to destructure non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\"); }\n\nfunction _iterableToArrayLimit(arr, i) { var _i = arr == null ? null : typeof Symbol !== \"undefined\" && arr[Symbol.iterator] || arr[\"@@iterator\"]; if (_i == null) return; var _arr = []; var _n = true; var _d = false; var _s, _e; try { for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i[\"return\"] != null) _i[\"return\"](); } finally { if (_d) throw _e; } } return _arr; }\n\nfunction _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }\n\nfunction _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }\n\nfunction _nonIterableSpread() { throw new TypeError(\"Invalid attempt to spread non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\"); }\n\nfunction _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === \"string\") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === \"Object\" && o.constructor) n = o.constructor.name; if (n === \"Map\" || n === \"Set\") return Array.from(o); if (n === \"Arguments\" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }\n\nfunction _iterableToArray(iter) { if (typeof Symbol !== \"undefined\" && iter[Symbol.iterator] != null || iter[\"@@iterator\"] != null) return Array.from(iter); }\n\nfunction _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }\n\nfunction _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, \"prototype\", { writable: false }); return Constructor; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\n/**\n * @license Angular v11.0.2\n * (c) 2010-2020 Google LLC. https://angular.io/\n * License: MIT\n */\nimport { Injectable, InjectionToken, Inject, PLATFORM_ID, Injector, NgModule } from '@angular/core';\nimport { of, Observable } from 'rxjs';\nimport { concatMap, filter, map } from 'rxjs/operators';\nimport { DOCUMENT, ɵparseCookieValue } from '@angular/common';\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Transforms an `HttpRequest` into a stream of `HttpEvent`s, one of which will likely be a\n * `HttpResponse`.\n *\n * `HttpHandler` is injectable. When injected, the handler instance dispatches requests to the\n * first interceptor in the chain, which dispatches to the second, etc, eventually reaching the\n * `HttpBackend`.\n *\n * In an `HttpInterceptor`, the `HttpHandler` parameter is the next interceptor in the chain.\n *\n * @publicApi\n */\n\nvar HttpHandler = /*#__PURE__*/_createClass(function HttpHandler() {\n  _classCallCheck(this, HttpHandler);\n});\n/**\n * A final `HttpHandler` which will dispatch the request via browser HTTP APIs to a backend.\n *\n * Interceptors sit between the `HttpClient` interface and the `HttpBackend`.\n *\n * When injected, `HttpBackend` dispatches requests directly to the backend, without going\n * through the interceptor chain.\n *\n * @publicApi\n */\n\n\nvar HttpBackend = /*#__PURE__*/_createClass(function HttpBackend() {\n  _classCallCheck(this, HttpBackend);\n});\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Represents the header configuration options for an HTTP request.\n * Instances are immutable. Modifying methods return a cloned\n * instance with the change. The original object is never changed.\n *\n * @publicApi\n */\n\n\nvar HttpHeaders = /*#__PURE__*/function () {\n  /**  Constructs a new HTTP header object with the given values.*/\n  function HttpHeaders(headers) {\n    var _this = this;\n\n    _classCallCheck(this, HttpHeaders);\n\n    /**\n     * Internal map of lowercased header names to the normalized\n     * form of the name (the form seen first).\n     */\n    this.normalizedNames = new Map();\n    /**\n     * Queued updates to be materialized the next initialization.\n     */\n\n    this.lazyUpdate = null;\n\n    if (!headers) {\n      this.headers = new Map();\n    } else if (typeof headers === 'string') {\n      this.lazyInit = function () {\n        _this.headers = new Map();\n        headers.split('\\n').forEach(function (line) {\n          var index = line.indexOf(':');\n\n          if (index > 0) {\n            var name = line.slice(0, index);\n            var key = name.toLowerCase();\n            var value = line.slice(index + 1).trim();\n\n            _this.maybeSetNormalizedName(name, key);\n\n            if (_this.headers.has(key)) {\n              _this.headers.get(key).push(value);\n            } else {\n              _this.headers.set(key, [value]);\n            }\n          }\n        });\n      };\n    } else {\n      this.lazyInit = function () {\n        _this.headers = new Map();\n        Object.keys(headers).forEach(function (name) {\n          var values = headers[name];\n          var key = name.toLowerCase();\n\n          if (typeof values === 'string') {\n            values = [values];\n          }\n\n          if (values.length > 0) {\n            _this.headers.set(key, values);\n\n            _this.maybeSetNormalizedName(name, key);\n          }\n        });\n      };\n    }\n  }\n  /**\n   * Checks for existence of a given header.\n   *\n   * @param name The header name to check for existence.\n   *\n   * @returns True if the header exists, false otherwise.\n   */\n\n\n  _createClass(HttpHeaders, [{\n    key: \"has\",\n    value: function has(name) {\n      this.init();\n      return this.headers.has(name.toLowerCase());\n    }\n    /**\n     * Retrieves the first value of a given header.\n     *\n     * @param name The header name.\n     *\n     * @returns The value string if the header exists, null otherwise\n     */\n\n  }, {\n    key: \"get\",\n    value: function get(name) {\n      this.init();\n      var values = this.headers.get(name.toLowerCase());\n      return values && values.length > 0 ? values[0] : null;\n    }\n    /**\n     * Retrieves the names of the headers.\n     *\n     * @returns A list of header names.\n     */\n\n  }, {\n    key: \"keys\",\n    value: function keys() {\n      this.init();\n      return Array.from(this.normalizedNames.values());\n    }\n    /**\n     * Retrieves a list of values for a given header.\n     *\n     * @param name The header name from which to retrieve values.\n     *\n     * @returns A string of values if the header exists, null otherwise.\n     */\n\n  }, {\n    key: \"getAll\",\n    value: function getAll(name) {\n      this.init();\n      return this.headers.get(name.toLowerCase()) || null;\n    }\n    /**\n     * Appends a new value to the existing set of values for a header\n     * and returns them in a clone of the original instance.\n     *\n     * @param name The header name for which to append the values.\n     * @param value The value to append.\n     *\n     * @returns A clone of the HTTP headers object with the value appended to the given header.\n     */\n\n  }, {\n    key: \"append\",\n    value: function append(name, value) {\n      return this.clone({\n        name: name,\n        value: value,\n        op: 'a'\n      });\n    }\n    /**\n     * Sets or modifies a value for a given header in a clone of the original instance.\n     * If the header already exists, its value is replaced with the given value\n     * in the returned object.\n     *\n     * @param name The header name.\n     * @param value The value or values to set or overide for the given header.\n     *\n     * @returns A clone of the HTTP headers object with the newly set header value.\n     */\n\n  }, {\n    key: \"set\",\n    value: function set(name, value) {\n      return this.clone({\n        name: name,\n        value: value,\n        op: 's'\n      });\n    }\n    /**\n     * Deletes values for a given header in a clone of the original instance.\n     *\n     * @param name The header name.\n     * @param value The value or values to delete for the given header.\n     *\n     * @returns A clone of the HTTP headers object with the given value deleted.\n     */\n\n  }, {\n    key: \"delete\",\n    value: function _delete(name, value) {\n      return this.clone({\n        name: name,\n        value: value,\n        op: 'd'\n      });\n    }\n  }, {\n    key: \"maybeSetNormalizedName\",\n    value: function maybeSetNormalizedName(name, lcName) {\n      if (!this.normalizedNames.has(lcName)) {\n        this.normalizedNames.set(lcName, name);\n      }\n    }\n  }, {\n    key: \"init\",\n    value: function init() {\n      var _this2 = this;\n\n      if (!!this.lazyInit) {\n        if (this.lazyInit instanceof HttpHeaders) {\n          this.copyFrom(this.lazyInit);\n        } else {\n          this.lazyInit();\n        }\n\n        this.lazyInit = null;\n\n        if (!!this.lazyUpdate) {\n          this.lazyUpdate.forEach(function (update) {\n            return _this2.applyUpdate(update);\n          });\n          this.lazyUpdate = null;\n        }\n      }\n    }\n  }, {\n    key: \"copyFrom\",\n    value: function copyFrom(other) {\n      var _this3 = this;\n\n      other.init();\n      Array.from(other.headers.keys()).forEach(function (key) {\n        _this3.headers.set(key, other.headers.get(key));\n\n        _this3.normalizedNames.set(key, other.normalizedNames.get(key));\n      });\n    }\n  }, {\n    key: \"clone\",\n    value: function clone(update) {\n      var clone = new HttpHeaders();\n      clone.lazyInit = !!this.lazyInit && this.lazyInit instanceof HttpHeaders ? this.lazyInit : this;\n      clone.lazyUpdate = (this.lazyUpdate || []).concat([update]);\n      return clone;\n    }\n  }, {\n    key: \"applyUpdate\",\n    value: function applyUpdate(update) {\n      var key = update.name.toLowerCase();\n\n      switch (update.op) {\n        case 'a':\n        case 's':\n          var value = update.value;\n\n          if (typeof value === 'string') {\n            value = [value];\n          }\n\n          if (value.length === 0) {\n            return;\n          }\n\n          this.maybeSetNormalizedName(update.name, key);\n          var base = (update.op === 'a' ? this.headers.get(key) : undefined) || [];\n          base.push.apply(base, _toConsumableArray(value));\n          this.headers.set(key, base);\n          break;\n\n        case 'd':\n          var toDelete = update.value;\n\n          if (!toDelete) {\n            this.headers.delete(key);\n            this.normalizedNames.delete(key);\n          } else {\n            var existing = this.headers.get(key);\n\n            if (!existing) {\n              return;\n            }\n\n            existing = existing.filter(function (value) {\n              return toDelete.indexOf(value) === -1;\n            });\n\n            if (existing.length === 0) {\n              this.headers.delete(key);\n              this.normalizedNames.delete(key);\n            } else {\n              this.headers.set(key, existing);\n            }\n          }\n\n          break;\n      }\n    }\n    /**\n     * @internal\n     */\n\n  }, {\n    key: \"forEach\",\n    value: function forEach(fn) {\n      var _this4 = this;\n\n      this.init();\n      Array.from(this.normalizedNames.keys()).forEach(function (key) {\n        return fn(_this4.normalizedNames.get(key), _this4.headers.get(key));\n      });\n    }\n  }]);\n\n  return HttpHeaders;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Provides encoding and decoding of URL parameter and query-string values.\n *\n * Serializes and parses URL parameter keys and values to encode and decode them.\n * If you pass URL query parameters without encoding,\n * the query parameters can be misinterpreted at the receiving end.\n *\n *\n * @publicApi\n */\n\n\nvar HttpUrlEncodingCodec = /*#__PURE__*/function () {\n  function HttpUrlEncodingCodec() {\n    _classCallCheck(this, HttpUrlEncodingCodec);\n  }\n\n  _createClass(HttpUrlEncodingCodec, [{\n    key: \"encodeKey\",\n    value:\n    /**\n     * Encodes a key name for a URL parameter or query-string.\n     * @param key The key name.\n     * @returns The encoded key name.\n     */\n    function encodeKey(key) {\n      return standardEncoding(key);\n    }\n    /**\n     * Encodes the value of a URL parameter or query-string.\n     * @param value The value.\n     * @returns The encoded value.\n     */\n\n  }, {\n    key: \"encodeValue\",\n    value: function encodeValue(value) {\n      return standardEncoding(value);\n    }\n    /**\n     * Decodes an encoded URL parameter or query-string key.\n     * @param key The encoded key name.\n     * @returns The decoded key name.\n     */\n\n  }, {\n    key: \"decodeKey\",\n    value: function decodeKey(key) {\n      return decodeURIComponent(key);\n    }\n    /**\n     * Decodes an encoded URL parameter or query-string value.\n     * @param value The encoded value.\n     * @returns The decoded value.\n     */\n\n  }, {\n    key: \"decodeValue\",\n    value: function decodeValue(value) {\n      return decodeURIComponent(value);\n    }\n  }]);\n\n  return HttpUrlEncodingCodec;\n}();\n\nfunction paramParser(rawParams, codec) {\n  var map = new Map();\n\n  if (rawParams.length > 0) {\n    var params = rawParams.split('&');\n    params.forEach(function (param) {\n      var eqIdx = param.indexOf('=');\n\n      var _ref = eqIdx == -1 ? [codec.decodeKey(param), ''] : [codec.decodeKey(param.slice(0, eqIdx)), codec.decodeValue(param.slice(eqIdx + 1))],\n          _ref2 = _slicedToArray(_ref, 2),\n          key = _ref2[0],\n          val = _ref2[1];\n\n      var list = map.get(key) || [];\n      list.push(val);\n      map.set(key, list);\n    });\n  }\n\n  return map;\n}\n\nfunction standardEncoding(v) {\n  return encodeURIComponent(v).replace(/%40/gi, '@').replace(/%3A/gi, ':').replace(/%24/gi, '$').replace(/%2C/gi, ',').replace(/%3B/gi, ';').replace(/%2B/gi, '+').replace(/%3D/gi, '=').replace(/%3F/gi, '?').replace(/%2F/gi, '/');\n}\n/**\n * An HTTP request/response body that represents serialized parameters,\n * per the MIME type `application/x-www-form-urlencoded`.\n *\n * This class is immutable; all mutation operations return a new instance.\n *\n * @publicApi\n */\n\n\nvar HttpParams = /*#__PURE__*/function () {\n  function HttpParams() {\n    var _this5 = this;\n\n    var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n    _classCallCheck(this, HttpParams);\n\n    this.updates = null;\n    this.cloneFrom = null;\n    this.encoder = options.encoder || new HttpUrlEncodingCodec();\n\n    if (!!options.fromString) {\n      if (!!options.fromObject) {\n        throw new Error(\"Cannot specify both fromString and fromObject.\");\n      }\n\n      this.map = paramParser(options.fromString, this.encoder);\n    } else if (!!options.fromObject) {\n      this.map = new Map();\n      Object.keys(options.fromObject).forEach(function (key) {\n        var value = options.fromObject[key];\n\n        _this5.map.set(key, Array.isArray(value) ? value : [value]);\n      });\n    } else {\n      this.map = null;\n    }\n  }\n  /**\n   * Reports whether the body includes one or more values for a given parameter.\n   * @param param The parameter name.\n   * @returns True if the parameter has one or more values,\n   * false if it has no value or is not present.\n   */\n\n\n  _createClass(HttpParams, [{\n    key: \"has\",\n    value: function has(param) {\n      this.init();\n      return this.map.has(param);\n    }\n    /**\n     * Retrieves the first value for a parameter.\n     * @param param The parameter name.\n     * @returns The first value of the given parameter,\n     * or `null` if the parameter is not present.\n     */\n\n  }, {\n    key: \"get\",\n    value: function get(param) {\n      this.init();\n      var res = this.map.get(param);\n      return !!res ? res[0] : null;\n    }\n    /**\n     * Retrieves all values for a  parameter.\n     * @param param The parameter name.\n     * @returns All values in a string array,\n     * or `null` if the parameter not present.\n     */\n\n  }, {\n    key: \"getAll\",\n    value: function getAll(param) {\n      this.init();\n      return this.map.get(param) || null;\n    }\n    /**\n     * Retrieves all the parameters for this body.\n     * @returns The parameter names in a string array.\n     */\n\n  }, {\n    key: \"keys\",\n    value: function keys() {\n      this.init();\n      return Array.from(this.map.keys());\n    }\n    /**\n     * Appends a new value to existing values for a parameter.\n     * @param param The parameter name.\n     * @param value The new value to add.\n     * @return A new body with the appended value.\n     */\n\n  }, {\n    key: \"append\",\n    value: function append(param, value) {\n      return this.clone({\n        param: param,\n        value: value,\n        op: 'a'\n      });\n    }\n    /**\n     * Replaces the value for a parameter.\n     * @param param The parameter name.\n     * @param value The new value.\n     * @return A new body with the new value.\n     */\n\n  }, {\n    key: \"set\",\n    value: function set(param, value) {\n      return this.clone({\n        param: param,\n        value: value,\n        op: 's'\n      });\n    }\n    /**\n     * Removes a given value or all values from a parameter.\n     * @param param The parameter name.\n     * @param value The value to remove, if provided.\n     * @return A new body with the given value removed, or with all values\n     * removed if no value is specified.\n     */\n\n  }, {\n    key: \"delete\",\n    value: function _delete(param, value) {\n      return this.clone({\n        param: param,\n        value: value,\n        op: 'd'\n      });\n    }\n    /**\n     * Serializes the body to an encoded string, where key-value pairs (separated by `=`) are\n     * separated by `&`s.\n     */\n\n  }, {\n    key: \"toString\",\n    value: function toString() {\n      var _this6 = this;\n\n      this.init();\n      return this.keys().map(function (key) {\n        var eKey = _this6.encoder.encodeKey(key); // `a: ['1']` produces `'a=1'`\n        // `b: []` produces `''`\n        // `c: ['1', '2']` produces `'c=1&c=2'`\n\n\n        return _this6.map.get(key).map(function (value) {\n          return eKey + '=' + _this6.encoder.encodeValue(value);\n        }).join('&');\n      }) // filter out empty values because `b: []` produces `''`\n      // which results in `a=1&&c=1&c=2` instead of `a=1&c=1&c=2` if we don't\n      .filter(function (param) {\n        return param !== '';\n      }).join('&');\n    }\n  }, {\n    key: \"clone\",\n    value: function clone(update) {\n      var clone = new HttpParams({\n        encoder: this.encoder\n      });\n      clone.cloneFrom = this.cloneFrom || this;\n      clone.updates = (this.updates || []).concat([update]);\n      return clone;\n    }\n  }, {\n    key: \"init\",\n    value: function init() {\n      var _this7 = this;\n\n      if (this.map === null) {\n        this.map = new Map();\n      }\n\n      if (this.cloneFrom !== null) {\n        this.cloneFrom.init();\n        this.cloneFrom.keys().forEach(function (key) {\n          return _this7.map.set(key, _this7.cloneFrom.map.get(key));\n        });\n        this.updates.forEach(function (update) {\n          switch (update.op) {\n            case 'a':\n            case 's':\n              var base = (update.op === 'a' ? _this7.map.get(update.param) : undefined) || [];\n              base.push(update.value);\n\n              _this7.map.set(update.param, base);\n\n              break;\n\n            case 'd':\n              if (update.value !== undefined) {\n                var _base = _this7.map.get(update.param) || [];\n\n                var idx = _base.indexOf(update.value);\n\n                if (idx !== -1) {\n                  _base.splice(idx, 1);\n                }\n\n                if (_base.length > 0) {\n                  _this7.map.set(update.param, _base);\n                } else {\n                  _this7.map.delete(update.param);\n                }\n              } else {\n                _this7.map.delete(update.param);\n\n                break;\n              }\n\n          }\n        });\n        this.cloneFrom = this.updates = null;\n      }\n    }\n  }]);\n\n  return HttpParams;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Determine whether the given HTTP method may include a body.\n */\n\n\nfunction mightHaveBody(method) {\n  switch (method) {\n    case 'DELETE':\n    case 'GET':\n    case 'HEAD':\n    case 'OPTIONS':\n    case 'JSONP':\n      return false;\n\n    default:\n      return true;\n  }\n}\n/**\n * Safely assert whether the given value is an ArrayBuffer.\n *\n * In some execution environments ArrayBuffer is not defined.\n */\n\n\nfunction isArrayBuffer(value) {\n  return typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer;\n}\n/**\n * Safely assert whether the given value is a Blob.\n *\n * In some execution environments Blob is not defined.\n */\n\n\nfunction isBlob(value) {\n  return typeof Blob !== 'undefined' && value instanceof Blob;\n}\n/**\n * Safely assert whether the given value is a FormData instance.\n *\n * In some execution environments FormData is not defined.\n */\n\n\nfunction isFormData(value) {\n  return typeof FormData !== 'undefined' && value instanceof FormData;\n}\n/**\n * An outgoing HTTP request with an optional typed body.\n *\n * `HttpRequest` represents an outgoing request, including URL, method,\n * headers, body, and other request configuration options. Instances should be\n * assumed to be immutable. To modify a `HttpRequest`, the `clone`\n * method should be used.\n *\n * @publicApi\n */\n\n\nvar HttpRequest = /*#__PURE__*/function () {\n  function HttpRequest(method, url, third, fourth) {\n    _classCallCheck(this, HttpRequest);\n\n    this.url = url;\n    /**\n     * The request body, or `null` if one isn't set.\n     *\n     * Bodies are not enforced to be immutable, as they can include a reference to any\n     * user-defined data type. However, interceptors should take care to preserve\n     * idempotence by treating them as such.\n     */\n\n    this.body = null;\n    /**\n     * Whether this request should be made in a way that exposes progress events.\n     *\n     * Progress events are expensive (change detection runs on each event) and so\n     * they should only be requested if the consumer intends to monitor them.\n     */\n\n    this.reportProgress = false;\n    /**\n     * Whether this request should be sent with outgoing credentials (cookies).\n     */\n\n    this.withCredentials = false;\n    /**\n     * The expected response type of the server.\n     *\n     * This is used to parse the response appropriately before returning it to\n     * the requestee.\n     */\n\n    this.responseType = 'json';\n    this.method = method.toUpperCase(); // Next, need to figure out which argument holds the HttpRequestInit\n    // options, if any.\n\n    var options; // Check whether a body argument is expected. The only valid way to omit\n    // the body argument is to use a known no-body method like GET.\n\n    if (mightHaveBody(this.method) || !!fourth) {\n      // Body is the third argument, options are the fourth.\n      this.body = third !== undefined ? third : null;\n      options = fourth;\n    } else {\n      // No body required, options are the third argument. The body stays null.\n      options = third;\n    } // If options have been passed, interpret them.\n\n\n    if (options) {\n      // Normalize reportProgress and withCredentials.\n      this.reportProgress = !!options.reportProgress;\n      this.withCredentials = !!options.withCredentials; // Override default response type of 'json' if one is provided.\n\n      if (!!options.responseType) {\n        this.responseType = options.responseType;\n      } // Override headers if they're provided.\n\n\n      if (!!options.headers) {\n        this.headers = options.headers;\n      }\n\n      if (!!options.params) {\n        this.params = options.params;\n      }\n    } // If no headers have been passed in, construct a new HttpHeaders instance.\n\n\n    if (!this.headers) {\n      this.headers = new HttpHeaders();\n    } // If no parameters have been passed in, construct a new HttpUrlEncodedParams instance.\n\n\n    if (!this.params) {\n      this.params = new HttpParams();\n      this.urlWithParams = url;\n    } else {\n      // Encode the parameters to a string in preparation for inclusion in the URL.\n      var params = this.params.toString();\n\n      if (params.length === 0) {\n        // No parameters, the visible URL is just the URL given at creation time.\n        this.urlWithParams = url;\n      } else {\n        // Does the URL already have query parameters? Look for '?'.\n        var qIdx = url.indexOf('?'); // There are 3 cases to handle:\n        // 1) No existing parameters -> append '?' followed by params.\n        // 2) '?' exists and is followed by existing query string ->\n        //    append '&' followed by params.\n        // 3) '?' exists at the end of the url -> append params directly.\n        // This basically amounts to determining the character, if any, with\n        // which to join the URL and parameters.\n\n        var sep = qIdx === -1 ? '?' : qIdx < url.length - 1 ? '&' : '';\n        this.urlWithParams = url + sep + params;\n      }\n    }\n  }\n  /**\n   * Transform the free-form body into a serialized format suitable for\n   * transmission to the server.\n   */\n\n\n  _createClass(HttpRequest, [{\n    key: \"serializeBody\",\n    value: function serializeBody() {\n      // If no body is present, no need to serialize it.\n      if (this.body === null) {\n        return null;\n      } // Check whether the body is already in a serialized form. If so,\n      // it can just be returned directly.\n\n\n      if (isArrayBuffer(this.body) || isBlob(this.body) || isFormData(this.body) || typeof this.body === 'string') {\n        return this.body;\n      } // Check whether the body is an instance of HttpUrlEncodedParams.\n\n\n      if (this.body instanceof HttpParams) {\n        return this.body.toString();\n      } // Check whether the body is an object or array, and serialize with JSON if so.\n\n\n      if (_typeof(this.body) === 'object' || typeof this.body === 'boolean' || Array.isArray(this.body)) {\n        return JSON.stringify(this.body);\n      } // Fall back on toString() for everything else.\n\n\n      return this.body.toString();\n    }\n    /**\n     * Examine the body and attempt to infer an appropriate MIME type\n     * for it.\n     *\n     * If no such type can be inferred, this method will return `null`.\n     */\n\n  }, {\n    key: \"detectContentTypeHeader\",\n    value: function detectContentTypeHeader() {\n      // An empty body has no content type.\n      if (this.body === null) {\n        return null;\n      } // FormData bodies rely on the browser's content type assignment.\n\n\n      if (isFormData(this.body)) {\n        return null;\n      } // Blobs usually have their own content type. If it doesn't, then\n      // no type can be inferred.\n\n\n      if (isBlob(this.body)) {\n        return this.body.type || null;\n      } // Array buffers have unknown contents and thus no type can be inferred.\n\n\n      if (isArrayBuffer(this.body)) {\n        return null;\n      } // Technically, strings could be a form of JSON data, but it's safe enough\n      // to assume they're plain strings.\n\n\n      if (typeof this.body === 'string') {\n        return 'text/plain';\n      } // `HttpUrlEncodedParams` has its own content-type.\n\n\n      if (this.body instanceof HttpParams) {\n        return 'application/x-www-form-urlencoded;charset=UTF-8';\n      } // Arrays, objects, and numbers will be encoded as JSON.\n\n\n      if (_typeof(this.body) === 'object' || typeof this.body === 'number' || Array.isArray(this.body)) {\n        return 'application/json';\n      } // No type could be inferred.\n\n\n      return null;\n    }\n  }, {\n    key: \"clone\",\n    value: function clone() {\n      var update = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n      // For method, url, and responseType, take the current value unless\n      // it is overridden in the update hash.\n      var method = update.method || this.method;\n      var url = update.url || this.url;\n      var responseType = update.responseType || this.responseType; // The body is somewhat special - a `null` value in update.body means\n      // whatever current body is present is being overridden with an empty\n      // body, whereas an `undefined` value in update.body implies no\n      // override.\n\n      var body = update.body !== undefined ? update.body : this.body; // Carefully handle the boolean options to differentiate between\n      // `false` and `undefined` in the update args.\n\n      var withCredentials = update.withCredentials !== undefined ? update.withCredentials : this.withCredentials;\n      var reportProgress = update.reportProgress !== undefined ? update.reportProgress : this.reportProgress; // Headers and params may be appended to if `setHeaders` or\n      // `setParams` are used.\n\n      var headers = update.headers || this.headers;\n      var params = update.params || this.params; // Check whether the caller has asked to add headers.\n\n      if (update.setHeaders !== undefined) {\n        // Set every requested header.\n        headers = Object.keys(update.setHeaders).reduce(function (headers, name) {\n          return headers.set(name, update.setHeaders[name]);\n        }, headers);\n      } // Check whether the caller has asked to set params.\n\n\n      if (update.setParams) {\n        // Set every requested param.\n        params = Object.keys(update.setParams).reduce(function (params, param) {\n          return params.set(param, update.setParams[param]);\n        }, params);\n      } // Finally, construct the new HttpRequest using the pieces from above.\n\n\n      return new HttpRequest(method, url, body, {\n        params: params,\n        headers: headers,\n        reportProgress: reportProgress,\n        responseType: responseType,\n        withCredentials: withCredentials\n      });\n    }\n  }]);\n\n  return HttpRequest;\n}();\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Type enumeration for the different kinds of `HttpEvent`.\n *\n * @publicApi\n */\n\n\nvar HttpEventType;\n\n(function (HttpEventType) {\n  /**\n   * The request was sent out over the wire.\n   */\n  HttpEventType[HttpEventType[\"Sent\"] = 0] = \"Sent\";\n  /**\n   * An upload progress event was received.\n   */\n\n  HttpEventType[HttpEventType[\"UploadProgress\"] = 1] = \"UploadProgress\";\n  /**\n   * The response status code and headers were received.\n   */\n\n  HttpEventType[HttpEventType[\"ResponseHeader\"] = 2] = \"ResponseHeader\";\n  /**\n   * A download progress event was received.\n   */\n\n  HttpEventType[HttpEventType[\"DownloadProgress\"] = 3] = \"DownloadProgress\";\n  /**\n   * The full response including the body was received.\n   */\n\n  HttpEventType[HttpEventType[\"Response\"] = 4] = \"Response\";\n  /**\n   * A custom event from an interceptor or a backend.\n   */\n\n  HttpEventType[HttpEventType[\"User\"] = 5] = \"User\";\n})(HttpEventType || (HttpEventType = {}));\n/**\n * Base class for both `HttpResponse` and `HttpHeaderResponse`.\n *\n * @publicApi\n */\n\n\nvar HttpResponseBase = /*#__PURE__*/_createClass(\n/**\n * Super-constructor for all responses.\n *\n * The single parameter accepted is an initialization hash. Any properties\n * of the response passed there will override the default values.\n */\nfunction HttpResponseBase(init) {\n  var defaultStatus = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 200;\n  var defaultStatusText = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 'OK';\n\n  _classCallCheck(this, HttpResponseBase);\n\n  // If the hash has values passed, use them to initialize the response.\n  // Otherwise use the default values.\n  this.headers = init.headers || new HttpHeaders();\n  this.status = init.status !== undefined ? init.status : defaultStatus;\n  this.statusText = init.statusText || defaultStatusText;\n  this.url = init.url || null; // Cache the ok value to avoid defining a getter.\n\n  this.ok = this.status >= 200 && this.status < 300;\n});\n/**\n * A partial HTTP response which only includes the status and header data,\n * but no response body.\n *\n * `HttpHeaderResponse` is a `HttpEvent` available on the response\n * event stream, only when progress events are requested.\n *\n * @publicApi\n */\n\n\nvar HttpHeaderResponse = /*#__PURE__*/function (_HttpResponseBase) {\n  _inherits(HttpHeaderResponse, _HttpResponseBase);\n\n  var _super = _createSuper(HttpHeaderResponse);\n\n  /**\n   * Create a new `HttpHeaderResponse` with the given parameters.\n   */\n  function HttpHeaderResponse() {\n    var _this8;\n\n    var init = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n    _classCallCheck(this, HttpHeaderResponse);\n\n    _this8 = _super.call(this, init);\n    _this8.type = HttpEventType.ResponseHeader;\n    return _this8;\n  }\n  /**\n   * Copy this `HttpHeaderResponse`, overriding its contents with the\n   * given parameter hash.\n   */\n\n\n  _createClass(HttpHeaderResponse, [{\n    key: \"clone\",\n    value: function clone() {\n      var update = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n      // Perform a straightforward initialization of the new HttpHeaderResponse,\n      // overriding the current parameters with new ones if given.\n      return new HttpHeaderResponse({\n        headers: update.headers || this.headers,\n        status: update.status !== undefined ? update.status : this.status,\n        statusText: update.statusText || this.statusText,\n        url: update.url || this.url || undefined\n      });\n    }\n  }]);\n\n  return HttpHeaderResponse;\n}(HttpResponseBase);\n/**\n * A full HTTP response, including a typed response body (which may be `null`\n * if one was not returned).\n *\n * `HttpResponse` is a `HttpEvent` available on the response event\n * stream.\n *\n * @publicApi\n */\n\n\nvar HttpResponse = /*#__PURE__*/function (_HttpResponseBase2) {\n  _inherits(HttpResponse, _HttpResponseBase2);\n\n  var _super2 = _createSuper(HttpResponse);\n\n  /**\n   * Construct a new `HttpResponse`.\n   */\n  function HttpResponse() {\n    var _this9;\n\n    var init = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n    _classCallCheck(this, HttpResponse);\n\n    _this9 = _super2.call(this, init);\n    _this9.type = HttpEventType.Response;\n    _this9.body = init.body !== undefined ? init.body : null;\n    return _this9;\n  }\n\n  _createClass(HttpResponse, [{\n    key: \"clone\",\n    value: function clone() {\n      var update = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n      return new HttpResponse({\n        body: update.body !== undefined ? update.body : this.body,\n        headers: update.headers || this.headers,\n        status: update.status !== undefined ? update.status : this.status,\n        statusText: update.statusText || this.statusText,\n        url: update.url || this.url || undefined\n      });\n    }\n  }]);\n\n  return HttpResponse;\n}(HttpResponseBase);\n/**\n * A response that represents an error or failure, either from a\n * non-successful HTTP status, an error while executing the request,\n * or some other failure which occurred during the parsing of the response.\n *\n * Any error returned on the `Observable` response stream will be\n * wrapped in an `HttpErrorResponse` to provide additional context about\n * the state of the HTTP layer when the error occurred. The error property\n * will contain either a wrapped Error object or the error response returned\n * from the server.\n *\n * @publicApi\n */\n\n\nvar HttpErrorResponse = /*#__PURE__*/function (_HttpResponseBase3) {\n  _inherits(HttpErrorResponse, _HttpResponseBase3);\n\n  var _super3 = _createSuper(HttpErrorResponse);\n\n  function HttpErrorResponse(init) {\n    var _this10;\n\n    _classCallCheck(this, HttpErrorResponse);\n\n    // Initialize with a default status of 0 / Unknown Error.\n    _this10 = _super3.call(this, init, 0, 'Unknown Error');\n    _this10.name = 'HttpErrorResponse';\n    /**\n     * Errors are never okay, even when the status code is in the 2xx success range.\n     */\n\n    _this10.ok = false; // If the response was successful, then this was a parse error. Otherwise, it was\n    // a protocol-level failure of some sort. Either the request failed in transit\n    // or the server returned an unsuccessful status code.\n\n    if (_this10.status >= 200 && _this10.status < 300) {\n      _this10.message = \"Http failure during parsing for \".concat(init.url || '(unknown url)');\n    } else {\n      _this10.message = \"Http failure response for \".concat(init.url || '(unknown url)', \": \").concat(init.status, \" \").concat(init.statusText);\n    }\n\n    _this10.error = init.error || null;\n    return _this10;\n  }\n\n  return _createClass(HttpErrorResponse);\n}(HttpResponseBase);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Constructs an instance of `HttpRequestOptions<T>` from a source `HttpMethodOptions` and\n * the given `body`. This function clones the object and adds the body.\n *\n * Note that the `responseType` *options* value is a String that identifies the\n * single data type of the response.\n * A single overload version of the method handles each response type.\n * The value of `responseType` cannot be a union, as the combined signature could imply.\n *\n */\n\n\nfunction addBody(options, body) {\n  return {\n    body: body,\n    headers: options.headers,\n    observe: options.observe,\n    params: options.params,\n    reportProgress: options.reportProgress,\n    responseType: options.responseType,\n    withCredentials: options.withCredentials\n  };\n}\n/**\n * Performs HTTP requests.\n * This service is available as an injectable class, with methods to perform HTTP requests.\n * Each request method has multiple signatures, and the return type varies based on\n * the signature that is called (mainly the values of `observe` and `responseType`).\n *\n * Note that the `responseType` *options* value is a String that identifies the\n * single data type of the response.\n * A single overload version of the method handles each response type.\n * The value of `responseType` cannot be a union, as the combined signature could imply.\n\n *\n * @usageNotes\n * Sample HTTP requests for the [Tour of Heroes](/tutorial/toh-pt0) application.\n *\n * ### HTTP Request Example\n *\n * ```\n *  // GET heroes whose name contains search term\n * searchHeroes(term: string): observable<Hero[]>{\n *\n *  const params = new HttpParams({fromString: 'name=term'});\n *    return this.httpClient.request('GET', this.heroesUrl, {responseType:'json', params});\n * }\n * ```\n * ### JSONP Example\n * ```\n * requestJsonp(url, callback = 'callback') {\n *  return this.httpClient.jsonp(this.heroesURL, callback);\n * }\n * ```\n *\n * ### PATCH Example\n * ```\n * // PATCH one of the heroes' name\n * patchHero (id: number, heroName: string): Observable<{}> {\n * const url = `${this.heroesUrl}/${id}`;   // PATCH api/heroes/42\n *  return this.httpClient.patch(url, {name: heroName}, httpOptions)\n *    .pipe(catchError(this.handleError('patchHero')));\n * }\n * ```\n *\n * @see [HTTP Guide](guide/http)\n *\n * @publicApi\n */\n\n\nvar HttpClient = /*#__PURE__*/function () {\n  function HttpClient(handler) {\n    _classCallCheck(this, HttpClient);\n\n    this.handler = handler;\n  }\n  /**\n   * Constructs an observable for a generic HTTP request that, when subscribed,\n   * fires the request through the chain of registered interceptors and on to the\n   * server.\n   *\n   * You can pass an `HttpRequest` directly as the only parameter. In this case,\n   * the call returns an observable of the raw `HttpEvent` stream.\n   *\n   * Alternatively you can pass an HTTP method as the first parameter,\n   * a URL string as the second, and an options hash containing the request body as the third.\n   * See `addBody()`. In this case, the specified `responseType` and `observe` options determine the\n   * type of returned observable.\n   *   * The `responseType` value determines how a successful response body is parsed.\n   *   * If `responseType` is the default `json`, you can pass a type interface for the resulting\n   * object as a type parameter to the call.\n   *\n   * The `observe` value determines the return type, according to what you are interested in\n   * observing.\n   *   * An `observe` value of events returns an observable of the raw `HttpEvent` stream, including\n   * progress events by default.\n   *   * An `observe` value of response returns an observable of `HttpResponse<T>`,\n   * where the `T` parameter depends on the `responseType` and any optionally provided type\n   * parameter.\n   *   * An `observe` value of body returns an observable of `<T>` with the same `T` body type.\n   *\n   */\n\n\n  _createClass(HttpClient, [{\n    key: \"request\",\n    value: function request(first, url) {\n      var _this11 = this;\n\n      var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n      var req; // First, check whether the primary argument is an instance of `HttpRequest`.\n\n      if (first instanceof HttpRequest) {\n        // It is. The other arguments must be undefined (per the signatures) and can be\n        // ignored.\n        req = first;\n      } else {\n        // It's a string, so it represents a URL. Construct a request based on it,\n        // and incorporate the remaining arguments (assuming `GET` unless a method is\n        // provided.\n        // Figure out the headers.\n        var headers = undefined;\n\n        if (options.headers instanceof HttpHeaders) {\n          headers = options.headers;\n        } else {\n          headers = new HttpHeaders(options.headers);\n        } // Sort out parameters.\n\n\n        var params = undefined;\n\n        if (!!options.params) {\n          if (options.params instanceof HttpParams) {\n            params = options.params;\n          } else {\n            params = new HttpParams({\n              fromObject: options.params\n            });\n          }\n        } // Construct the request.\n\n\n        req = new HttpRequest(first, url, options.body !== undefined ? options.body : null, {\n          headers: headers,\n          params: params,\n          reportProgress: options.reportProgress,\n          // By default, JSON is assumed to be returned for all calls.\n          responseType: options.responseType || 'json',\n          withCredentials: options.withCredentials\n        });\n      } // Start with an Observable.of() the initial request, and run the handler (which\n      // includes all interceptors) inside a concatMap(). This way, the handler runs\n      // inside an Observable chain, which causes interceptors to be re-run on every\n      // subscription (this also makes retries re-run the handler, including interceptors).\n\n\n      var events$ = of(req).pipe(concatMap(function (req) {\n        return _this11.handler.handle(req);\n      })); // If coming via the API signature which accepts a previously constructed HttpRequest,\n      // the only option is to get the event stream. Otherwise, return the event stream if\n      // that is what was requested.\n\n      if (first instanceof HttpRequest || options.observe === 'events') {\n        return events$;\n      } // The requested stream contains either the full response or the body. In either\n      // case, the first step is to filter the event stream to extract a stream of\n      // responses(s).\n\n\n      var res$ = events$.pipe(filter(function (event) {\n        return event instanceof HttpResponse;\n      })); // Decide which stream to return.\n\n      switch (options.observe || 'body') {\n        case 'body':\n          // The requested stream is the body. Map the response stream to the response\n          // body. This could be done more simply, but a misbehaving interceptor might\n          // transform the response body into a different format and ignore the requested\n          // responseType. Guard against this by validating that the response is of the\n          // requested type.\n          switch (req.responseType) {\n            case 'arraybuffer':\n              return res$.pipe(map(function (res) {\n                // Validate that the body is an ArrayBuffer.\n                if (res.body !== null && !(res.body instanceof ArrayBuffer)) {\n                  throw new Error('Response is not an ArrayBuffer.');\n                }\n\n                return res.body;\n              }));\n\n            case 'blob':\n              return res$.pipe(map(function (res) {\n                // Validate that the body is a Blob.\n                if (res.body !== null && !(res.body instanceof Blob)) {\n                  throw new Error('Response is not a Blob.');\n                }\n\n                return res.body;\n              }));\n\n            case 'text':\n              return res$.pipe(map(function (res) {\n                // Validate that the body is a string.\n                if (res.body !== null && typeof res.body !== 'string') {\n                  throw new Error('Response is not a string.');\n                }\n\n                return res.body;\n              }));\n\n            case 'json':\n            default:\n              // No validation needed for JSON responses, as they can be of any type.\n              return res$.pipe(map(function (res) {\n                return res.body;\n              }));\n          }\n\n        case 'response':\n          // The response stream was requested directly, so return it.\n          return res$;\n\n        default:\n          // Guard against new future observe types being added.\n          throw new Error(\"Unreachable: unhandled observe type \".concat(options.observe, \"}\"));\n      }\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `DELETE` request to execute on the server. See the individual overloads for\n     * details on the return type.\n     *\n     * @param url     The endpoint URL.\n     * @param options The HTTP options to send with the request.\n     *\n     */\n\n  }, {\n    key: \"delete\",\n    value: function _delete(url) {\n      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n      return this.request('DELETE', url, options);\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `GET` request to execute on the server. See the individual overloads for\n     * details on the return type.\n     */\n\n  }, {\n    key: \"get\",\n    value: function get(url) {\n      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n      return this.request('GET', url, options);\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `HEAD` request to execute on the server. The `HEAD` method returns\n     * meta information about the resource without transferring the\n     * resource itself. See the individual overloads for\n     * details on the return type.\n     */\n\n  }, {\n    key: \"head\",\n    value: function head(url) {\n      var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n      return this.request('HEAD', url, options);\n    }\n    /**\n     * Constructs an `Observable` that, when subscribed, causes a request with the special method\n     * `JSONP` to be dispatched via the interceptor pipeline.\n     * The [JSONP pattern](https://en.wikipedia.org/wiki/JSONP) works around limitations of certain\n     * API endpoints that don't support newer,\n     * and preferable [CORS](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS) protocol.\n     * JSONP treats the endpoint API as a JavaScript file and tricks the browser to process the\n     * requests even if the API endpoint is not located on the same domain (origin) as the client-side\n     * application making the request.\n     * The endpoint API must support JSONP callback for JSONP requests to work.\n     * The resource API returns the JSON response wrapped in a callback function.\n     * You can pass the callback function name as one of the query parameters.\n     * Note that JSONP requests can only be used with `GET` requests.\n     *\n     * @param url The resource URL.\n     * @param callbackParam The callback function name.\n     *\n     */\n\n  }, {\n    key: \"jsonp\",\n    value: function jsonp(url, callbackParam) {\n      return this.request('JSONP', url, {\n        params: new HttpParams().append(callbackParam, 'JSONP_CALLBACK'),\n        observe: 'body',\n        responseType: 'json'\n      });\n    }\n    /**\n     * Constructs an `Observable` that, when subscribed, causes the configured\n     * `OPTIONS` request to execute on the server. This method allows the client\n     * to determine the supported HTTP methods and other capabilites of an endpoint,\n     * without implying a resource action. See the individual overloads for\n     * details on the return type.\n     */\n\n  }, {\n    key: \"options\",\n    value: function options(url) {\n      var _options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n      return this.request('OPTIONS', url, _options);\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `PATCH` request to execute on the server. See the individual overloads for\n     * details on the return type.\n     */\n\n  }, {\n    key: \"patch\",\n    value: function patch(url, body) {\n      var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n      return this.request('PATCH', url, addBody(options, body));\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `POST` request to execute on the server. The server responds with the location of\n     * the replaced resource. See the individual overloads for\n     * details on the return type.\n     */\n\n  }, {\n    key: \"post\",\n    value: function post(url, body) {\n      var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n      return this.request('POST', url, addBody(options, body));\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `PUT` request to execute on the server. The `PUT` method replaces an existing resource\n     * with a new set of values.\n     * See the individual overloads for details on the return type.\n     */\n\n  }, {\n    key: \"put\",\n    value: function put(url, body) {\n      var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n      return this.request('PUT', url, addBody(options, body));\n    }\n  }]);\n\n  return HttpClient;\n}();\n\nHttpClient.decorators = [{\n  type: Injectable\n}];\n\nHttpClient.ctorParameters = function () {\n  return [{\n    type: HttpHandler\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * `HttpHandler` which applies an `HttpInterceptor` to an `HttpRequest`.\n *\n *\n */\n\n\nvar HttpInterceptorHandler = /*#__PURE__*/function () {\n  function HttpInterceptorHandler(next, interceptor) {\n    _classCallCheck(this, HttpInterceptorHandler);\n\n    this.next = next;\n    this.interceptor = interceptor;\n  }\n\n  _createClass(HttpInterceptorHandler, [{\n    key: \"handle\",\n    value: function handle(req) {\n      return this.interceptor.intercept(req, this.next);\n    }\n  }]);\n\n  return HttpInterceptorHandler;\n}();\n/**\n * A multi-provider token that represents the array of registered\n * `HttpInterceptor` objects.\n *\n * @publicApi\n */\n\n\nvar HTTP_INTERCEPTORS = new InjectionToken('HTTP_INTERCEPTORS');\n\nvar NoopInterceptor = /*#__PURE__*/function () {\n  function NoopInterceptor() {\n    _classCallCheck(this, NoopInterceptor);\n  }\n\n  _createClass(NoopInterceptor, [{\n    key: \"intercept\",\n    value: function intercept(req, next) {\n      return next.handle(req);\n    }\n  }]);\n\n  return NoopInterceptor;\n}();\n\nNoopInterceptor.decorators = [{\n  type: Injectable\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// Every request made through JSONP needs a callback name that's unique across the\n// whole page. Each request is assigned an id and the callback name is constructed\n// from that. The next id to be assigned is tracked in a global variable here that\n// is shared among all applications on the page.\n\nvar nextRequestId = 0; // Error text given when a JSONP script is injected, but doesn't invoke the callback\n// passed in its URL.\n\nvar JSONP_ERR_NO_CALLBACK = 'JSONP injected script did not invoke callback.'; // Error text given when a request is passed to the JsonpClientBackend that doesn't\n// have a request method JSONP.\n\nvar JSONP_ERR_WRONG_METHOD = 'JSONP requests must use JSONP request method.';\nvar JSONP_ERR_WRONG_RESPONSE_TYPE = 'JSONP requests must use Json response type.';\n/**\n * DI token/abstract type representing a map of JSONP callbacks.\n *\n * In the browser, this should always be the `window` object.\n *\n *\n */\n\nvar JsonpCallbackContext = /*#__PURE__*/_createClass(function JsonpCallbackContext() {\n  _classCallCheck(this, JsonpCallbackContext);\n});\n/**\n * Processes an `HttpRequest` with the JSONP method,\n * by performing JSONP style requests.\n * @see `HttpHandler`\n * @see `HttpXhrBackend`\n *\n * @publicApi\n */\n\n\nvar JsonpClientBackend = /*#__PURE__*/function () {\n  function JsonpClientBackend(callbackMap, document) {\n    _classCallCheck(this, JsonpClientBackend);\n\n    this.callbackMap = callbackMap;\n    this.document = document;\n    /**\n     * A resolved promise that can be used to schedule microtasks in the event handlers.\n     */\n\n    this.resolvedPromise = Promise.resolve();\n  }\n  /**\n   * Get the name of the next callback method, by incrementing the global `nextRequestId`.\n   */\n\n\n  _createClass(JsonpClientBackend, [{\n    key: \"nextCallback\",\n    value: function nextCallback() {\n      return \"ng_jsonp_callback_\".concat(nextRequestId++);\n    }\n    /**\n     * Processes a JSONP request and returns an event stream of the results.\n     * @param req The request object.\n     * @returns An observable of the response events.\n     *\n     */\n\n  }, {\n    key: \"handle\",\n    value: function handle(req) {\n      var _this12 = this;\n\n      // Firstly, check both the method and response type. If either doesn't match\n      // then the request was improperly routed here and cannot be handled.\n      if (req.method !== 'JSONP') {\n        throw new Error(JSONP_ERR_WRONG_METHOD);\n      } else if (req.responseType !== 'json') {\n        throw new Error(JSONP_ERR_WRONG_RESPONSE_TYPE);\n      } // Everything else happens inside the Observable boundary.\n\n\n      return new Observable(function (observer) {\n        // The first step to make a request is to generate the callback name, and replace the\n        // callback placeholder in the URL with the name. Care has to be taken here to ensure\n        // a trailing &, if matched, gets inserted back into the URL in the correct place.\n        var callback = _this12.nextCallback();\n\n        var url = req.urlWithParams.replace(/=JSONP_CALLBACK(&|$)/, \"=\".concat(callback, \"$1\")); // Construct the <script> tag and point it at the URL.\n\n        var node = _this12.document.createElement('script');\n\n        node.src = url; // A JSONP request requires waiting for multiple callbacks. These variables\n        // are closed over and track state across those callbacks.\n        // The response object, if one has been received, or null otherwise.\n\n        var body = null; // Whether the response callback has been called.\n\n        var finished = false; // Whether the request has been cancelled (and thus any other callbacks)\n        // should be ignored.\n\n        var cancelled = false; // Set the response callback in this.callbackMap (which will be the window\n        // object in the browser. The script being loaded via the <script> tag will\n        // eventually call this callback.\n\n        _this12.callbackMap[callback] = function (data) {\n          // Data has been received from the JSONP script. Firstly, delete this callback.\n          delete _this12.callbackMap[callback]; // Next, make sure the request wasn't cancelled in the meantime.\n\n          if (cancelled) {\n            return;\n          } // Set state to indicate data was received.\n\n\n          body = data;\n          finished = true;\n        }; // cleanup() is a utility closure that removes the <script> from the page and\n        // the response callback from the window. This logic is used in both the\n        // success, error, and cancellation paths, so it's extracted out for convenience.\n\n\n        var cleanup = function cleanup() {\n          // Remove the <script> tag if it's still on the page.\n          if (node.parentNode) {\n            node.parentNode.removeChild(node);\n          } // Remove the response callback from the callbackMap (window object in the\n          // browser).\n\n\n          delete _this12.callbackMap[callback];\n        }; // onLoad() is the success callback which runs after the response callback\n        // if the JSONP script loads successfully. The event itself is unimportant.\n        // If something went wrong, onLoad() may run without the response callback\n        // having been invoked.\n\n\n        var onLoad = function onLoad(event) {\n          // Do nothing if the request has been cancelled.\n          if (cancelled) {\n            return;\n          } // We wrap it in an extra Promise, to ensure the microtask\n          // is scheduled after the loaded endpoint has executed any potential microtask itself,\n          // which is not guaranteed in Internet Explorer and EdgeHTML. See issue #39496\n\n\n          _this12.resolvedPromise.then(function () {\n            // Cleanup the page.\n            cleanup(); // Check whether the response callback has run.\n\n            if (!finished) {\n              // It hasn't, something went wrong with the request. Return an error via\n              // the Observable error path. All JSONP errors have status 0.\n              observer.error(new HttpErrorResponse({\n                url: url,\n                status: 0,\n                statusText: 'JSONP Error',\n                error: new Error(JSONP_ERR_NO_CALLBACK)\n              }));\n              return;\n            } // Success. body either contains the response body or null if none was\n            // returned.\n\n\n            observer.next(new HttpResponse({\n              body: body,\n              status: 200,\n              statusText: 'OK',\n              url: url\n            })); // Complete the stream, the response is over.\n\n            observer.complete();\n          });\n        }; // onError() is the error callback, which runs if the script returned generates\n        // a Javascript error. It emits the error via the Observable error channel as\n        // a HttpErrorResponse.\n\n\n        var onError = function onError(error) {\n          // If the request was already cancelled, no need to emit anything.\n          if (cancelled) {\n            return;\n          }\n\n          cleanup(); // Wrap the error in a HttpErrorResponse.\n\n          observer.error(new HttpErrorResponse({\n            error: error,\n            status: 0,\n            statusText: 'JSONP Error',\n            url: url\n          }));\n        }; // Subscribe to both the success (load) and error events on the <script> tag,\n        // and add it to the page.\n\n\n        node.addEventListener('load', onLoad);\n        node.addEventListener('error', onError);\n\n        _this12.document.body.appendChild(node); // The request has now been successfully sent.\n\n\n        observer.next({\n          type: HttpEventType.Sent\n        }); // Cancellation handler.\n\n        return function () {\n          // Track the cancellation so event listeners won't do anything even if already scheduled.\n          cancelled = true; // Remove the event listeners so they won't run if the events later fire.\n\n          node.removeEventListener('load', onLoad);\n          node.removeEventListener('error', onError); // And finally, clean up the page.\n\n          cleanup();\n        };\n      });\n    }\n  }]);\n\n  return JsonpClientBackend;\n}();\n\nJsonpClientBackend.decorators = [{\n  type: Injectable\n}];\n\nJsonpClientBackend.ctorParameters = function () {\n  return [{\n    type: JsonpCallbackContext\n  }, {\n    type: undefined,\n    decorators: [{\n      type: Inject,\n      args: [DOCUMENT]\n    }]\n  }];\n};\n/**\n * Identifies requests with the method JSONP and\n * shifts them to the `JsonpClientBackend`.\n *\n * @see `HttpInterceptor`\n *\n * @publicApi\n */\n\n\nvar JsonpInterceptor = /*#__PURE__*/function () {\n  function JsonpInterceptor(jsonp) {\n    _classCallCheck(this, JsonpInterceptor);\n\n    this.jsonp = jsonp;\n  }\n  /**\n   * Identifies and handles a given JSONP request.\n   * @param req The outgoing request object to handle.\n   * @param next The next interceptor in the chain, or the backend\n   * if no interceptors remain in the chain.\n   * @returns An observable of the event stream.\n   */\n\n\n  _createClass(JsonpInterceptor, [{\n    key: \"intercept\",\n    value: function intercept(req, next) {\n      if (req.method === 'JSONP') {\n        return this.jsonp.handle(req);\n      } // Fall through for normal HTTP requests.\n\n\n      return next.handle(req);\n    }\n  }]);\n\n  return JsonpInterceptor;\n}();\n\nJsonpInterceptor.decorators = [{\n  type: Injectable\n}];\n\nJsonpInterceptor.ctorParameters = function () {\n  return [{\n    type: JsonpClientBackend\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar XSSI_PREFIX = /^\\)\\]\\}',?\\n/;\n/**\n * Determine an appropriate URL for the response, by checking either\n * XMLHttpRequest.responseURL or the X-Request-URL header.\n */\n\nfunction getResponseUrl(xhr) {\n  if ('responseURL' in xhr && xhr.responseURL) {\n    return xhr.responseURL;\n  }\n\n  if (/^X-Request-URL:/m.test(xhr.getAllResponseHeaders())) {\n    return xhr.getResponseHeader('X-Request-URL');\n  }\n\n  return null;\n}\n/**\n * A wrapper around the `XMLHttpRequest` constructor.\n *\n * @publicApi\n */\n\n\nvar XhrFactory = /*#__PURE__*/_createClass(function XhrFactory() {\n  _classCallCheck(this, XhrFactory);\n});\n/**\n * A factory for `HttpXhrBackend` that uses the `XMLHttpRequest` browser API.\n *\n */\n\n\nvar BrowserXhr = /*#__PURE__*/function () {\n  function BrowserXhr() {\n    _classCallCheck(this, BrowserXhr);\n  }\n\n  _createClass(BrowserXhr, [{\n    key: \"build\",\n    value: function build() {\n      return new XMLHttpRequest();\n    }\n  }]);\n\n  return BrowserXhr;\n}();\n\nBrowserXhr.decorators = [{\n  type: Injectable\n}];\n\nBrowserXhr.ctorParameters = function () {\n  return [];\n};\n/**\n * Uses `XMLHttpRequest` to send requests to a backend server.\n * @see `HttpHandler`\n * @see `JsonpClientBackend`\n *\n * @publicApi\n */\n\n\nvar HttpXhrBackend = /*#__PURE__*/function () {\n  function HttpXhrBackend(xhrFactory) {\n    _classCallCheck(this, HttpXhrBackend);\n\n    this.xhrFactory = xhrFactory;\n  }\n  /**\n   * Processes a request and returns a stream of response events.\n   * @param req The request object.\n   * @returns An observable of the response events.\n   */\n\n\n  _createClass(HttpXhrBackend, [{\n    key: \"handle\",\n    value: function handle(req) {\n      var _this13 = this;\n\n      // Quick check to give a better error message when a user attempts to use\n      // HttpClient.jsonp() without installing the HttpClientJsonpModule\n      if (req.method === 'JSONP') {\n        throw new Error(\"Attempted to construct Jsonp request without HttpClientJsonpModule installed.\");\n      } // Everything happens on Observable subscription.\n\n\n      return new Observable(function (observer) {\n        // Start by setting up the XHR object with request method, URL, and withCredentials flag.\n        var xhr = _this13.xhrFactory.build();\n\n        xhr.open(req.method, req.urlWithParams);\n\n        if (!!req.withCredentials) {\n          xhr.withCredentials = true;\n        } // Add all the requested headers.\n\n\n        req.headers.forEach(function (name, values) {\n          return xhr.setRequestHeader(name, values.join(','));\n        }); // Add an Accept header if one isn't present already.\n\n        if (!req.headers.has('Accept')) {\n          xhr.setRequestHeader('Accept', 'application/json, text/plain, */*');\n        } // Auto-detect the Content-Type header if one isn't present already.\n\n\n        if (!req.headers.has('Content-Type')) {\n          var detectedType = req.detectContentTypeHeader(); // Sometimes Content-Type detection fails.\n\n          if (detectedType !== null) {\n            xhr.setRequestHeader('Content-Type', detectedType);\n          }\n        } // Set the responseType if one was requested.\n\n\n        if (req.responseType) {\n          var responseType = req.responseType.toLowerCase(); // JSON responses need to be processed as text. This is because if the server\n          // returns an XSSI-prefixed JSON response, the browser will fail to parse it,\n          // xhr.response will be null, and xhr.responseText cannot be accessed to\n          // retrieve the prefixed JSON data in order to strip the prefix. Thus, all JSON\n          // is parsed by first requesting text and then applying JSON.parse.\n\n          xhr.responseType = responseType !== 'json' ? responseType : 'text';\n        } // Serialize the request body if one is present. If not, this will be set to null.\n\n\n        var reqBody = req.serializeBody(); // If progress events are enabled, response headers will be delivered\n        // in two events - the HttpHeaderResponse event and the full HttpResponse\n        // event. However, since response headers don't change in between these\n        // two events, it doesn't make sense to parse them twice. So headerResponse\n        // caches the data extracted from the response whenever it's first parsed,\n        // to ensure parsing isn't duplicated.\n\n        var headerResponse = null; // partialFromXhr extracts the HttpHeaderResponse from the current XMLHttpRequest\n        // state, and memoizes it into headerResponse.\n\n        var partialFromXhr = function partialFromXhr() {\n          if (headerResponse !== null) {\n            return headerResponse;\n          } // Read status and normalize an IE9 bug (http://bugs.jquery.com/ticket/1450).\n\n\n          var status = xhr.status === 1223 ? 204 : xhr.status;\n          var statusText = xhr.statusText || 'OK'; // Parse headers from XMLHttpRequest - this step is lazy.\n\n          var headers = new HttpHeaders(xhr.getAllResponseHeaders()); // Read the response URL from the XMLHttpResponse instance and fall back on the\n          // request URL.\n\n          var url = getResponseUrl(xhr) || req.url; // Construct the HttpHeaderResponse and memoize it.\n\n          headerResponse = new HttpHeaderResponse({\n            headers: headers,\n            status: status,\n            statusText: statusText,\n            url: url\n          });\n          return headerResponse;\n        }; // Next, a few closures are defined for the various events which XMLHttpRequest can\n        // emit. This allows them to be unregistered as event listeners later.\n        // First up is the load event, which represents a response being fully available.\n\n\n        var onLoad = function onLoad() {\n          // Read response state from the memoized partial data.\n          var _partialFromXhr = partialFromXhr(),\n              headers = _partialFromXhr.headers,\n              status = _partialFromXhr.status,\n              statusText = _partialFromXhr.statusText,\n              url = _partialFromXhr.url; // The body will be read out if present.\n\n\n          var body = null;\n\n          if (status !== 204) {\n            // Use XMLHttpRequest.response if set, responseText otherwise.\n            body = typeof xhr.response === 'undefined' ? xhr.responseText : xhr.response;\n          } // Normalize another potential bug (this one comes from CORS).\n\n\n          if (status === 0) {\n            status = !!body ? 200 : 0;\n          } // ok determines whether the response will be transmitted on the event or\n          // error channel. Unsuccessful status codes (not 2xx) will always be errors,\n          // but a successful status code can still result in an error if the user\n          // asked for JSON data and the body cannot be parsed as such.\n\n\n          var ok = status >= 200 && status < 300; // Check whether the body needs to be parsed as JSON (in many cases the browser\n          // will have done that already).\n\n          if (req.responseType === 'json' && typeof body === 'string') {\n            // Save the original body, before attempting XSSI prefix stripping.\n            var originalBody = body;\n            body = body.replace(XSSI_PREFIX, '');\n\n            try {\n              // Attempt the parse. If it fails, a parse error should be delivered to the user.\n              body = body !== '' ? JSON.parse(body) : null;\n            } catch (error) {\n              // Since the JSON.parse failed, it's reasonable to assume this might not have been a\n              // JSON response. Restore the original body (including any XSSI prefix) to deliver\n              // a better error response.\n              body = originalBody; // If this was an error request to begin with, leave it as a string, it probably\n              // just isn't JSON. Otherwise, deliver the parsing error to the user.\n\n              if (ok) {\n                // Even though the response status was 2xx, this is still an error.\n                ok = false; // The parse error contains the text of the body that failed to parse.\n\n                body = {\n                  error: error,\n                  text: body\n                };\n              }\n            }\n          }\n\n          if (ok) {\n            // A successful response is delivered on the event stream.\n            observer.next(new HttpResponse({\n              body: body,\n              headers: headers,\n              status: status,\n              statusText: statusText,\n              url: url || undefined\n            })); // The full body has been received and delivered, no further events\n            // are possible. This request is complete.\n\n            observer.complete();\n          } else {\n            // An unsuccessful request is delivered on the error channel.\n            observer.error(new HttpErrorResponse({\n              // The error in this case is the response body (error from the server).\n              error: body,\n              headers: headers,\n              status: status,\n              statusText: statusText,\n              url: url || undefined\n            }));\n          }\n        }; // The onError callback is called when something goes wrong at the network level.\n        // Connection timeout, DNS error, offline, etc. These are actual errors, and are\n        // transmitted on the error channel.\n\n\n        var onError = function onError(error) {\n          var _partialFromXhr2 = partialFromXhr(),\n              url = _partialFromXhr2.url;\n\n          var res = new HttpErrorResponse({\n            error: error,\n            status: xhr.status || 0,\n            statusText: xhr.statusText || 'Unknown Error',\n            url: url || undefined\n          });\n          observer.error(res);\n        }; // The sentHeaders flag tracks whether the HttpResponseHeaders event\n        // has been sent on the stream. This is necessary to track if progress\n        // is enabled since the event will be sent on only the first download\n        // progerss event.\n\n\n        var sentHeaders = false; // The download progress event handler, which is only registered if\n        // progress events are enabled.\n\n        var onDownProgress = function onDownProgress(event) {\n          // Send the HttpResponseHeaders event if it hasn't been sent already.\n          if (!sentHeaders) {\n            observer.next(partialFromXhr());\n            sentHeaders = true;\n          } // Start building the download progress event to deliver on the response\n          // event stream.\n\n\n          var progressEvent = {\n            type: HttpEventType.DownloadProgress,\n            loaded: event.loaded\n          }; // Set the total number of bytes in the event if it's available.\n\n          if (event.lengthComputable) {\n            progressEvent.total = event.total;\n          } // If the request was for text content and a partial response is\n          // available on XMLHttpRequest, include it in the progress event\n          // to allow for streaming reads.\n\n\n          if (req.responseType === 'text' && !!xhr.responseText) {\n            progressEvent.partialText = xhr.responseText;\n          } // Finally, fire the event.\n\n\n          observer.next(progressEvent);\n        }; // The upload progress event handler, which is only registered if\n        // progress events are enabled.\n\n\n        var onUpProgress = function onUpProgress(event) {\n          // Upload progress events are simpler. Begin building the progress\n          // event.\n          var progress = {\n            type: HttpEventType.UploadProgress,\n            loaded: event.loaded\n          }; // If the total number of bytes being uploaded is available, include\n          // it.\n\n          if (event.lengthComputable) {\n            progress.total = event.total;\n          } // Send the event.\n\n\n          observer.next(progress);\n        }; // By default, register for load and error events.\n\n\n        xhr.addEventListener('load', onLoad);\n        xhr.addEventListener('error', onError); // Progress events are only enabled if requested.\n\n        if (req.reportProgress) {\n          // Download progress is always enabled if requested.\n          xhr.addEventListener('progress', onDownProgress); // Upload progress depends on whether there is a body to upload.\n\n          if (reqBody !== null && xhr.upload) {\n            xhr.upload.addEventListener('progress', onUpProgress);\n          }\n        } // Fire the request, and notify the event stream that it was fired.\n\n\n        xhr.send(reqBody);\n        observer.next({\n          type: HttpEventType.Sent\n        }); // This is the return from the Observable function, which is the\n        // request cancellation handler.\n\n        return function () {\n          // On a cancellation, remove all registered event listeners.\n          xhr.removeEventListener('error', onError);\n          xhr.removeEventListener('load', onLoad);\n\n          if (req.reportProgress) {\n            xhr.removeEventListener('progress', onDownProgress);\n\n            if (reqBody !== null && xhr.upload) {\n              xhr.upload.removeEventListener('progress', onUpProgress);\n            }\n          } // Finally, abort the in-flight request.\n\n\n          if (xhr.readyState !== xhr.DONE) {\n            xhr.abort();\n          }\n        };\n      });\n    }\n  }]);\n\n  return HttpXhrBackend;\n}();\n\nHttpXhrBackend.decorators = [{\n  type: Injectable\n}];\n\nHttpXhrBackend.ctorParameters = function () {\n  return [{\n    type: XhrFactory\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar XSRF_COOKIE_NAME = new InjectionToken('XSRF_COOKIE_NAME');\nvar XSRF_HEADER_NAME = new InjectionToken('XSRF_HEADER_NAME');\n/**\n * Retrieves the current XSRF token to use with the next outgoing request.\n *\n * @publicApi\n */\n\nvar HttpXsrfTokenExtractor = /*#__PURE__*/_createClass(function HttpXsrfTokenExtractor() {\n  _classCallCheck(this, HttpXsrfTokenExtractor);\n});\n/**\n * `HttpXsrfTokenExtractor` which retrieves the token from a cookie.\n */\n\n\nvar HttpXsrfCookieExtractor = /*#__PURE__*/function () {\n  function HttpXsrfCookieExtractor(doc, platform, cookieName) {\n    _classCallCheck(this, HttpXsrfCookieExtractor);\n\n    this.doc = doc;\n    this.platform = platform;\n    this.cookieName = cookieName;\n    this.lastCookieString = '';\n    this.lastToken = null;\n    /**\n     * @internal for testing\n     */\n\n    this.parseCount = 0;\n  }\n\n  _createClass(HttpXsrfCookieExtractor, [{\n    key: \"getToken\",\n    value: function getToken() {\n      if (this.platform === 'server') {\n        return null;\n      }\n\n      var cookieString = this.doc.cookie || '';\n\n      if (cookieString !== this.lastCookieString) {\n        this.parseCount++;\n        this.lastToken = ɵparseCookieValue(cookieString, this.cookieName);\n        this.lastCookieString = cookieString;\n      }\n\n      return this.lastToken;\n    }\n  }]);\n\n  return HttpXsrfCookieExtractor;\n}();\n\nHttpXsrfCookieExtractor.decorators = [{\n  type: Injectable\n}];\n\nHttpXsrfCookieExtractor.ctorParameters = function () {\n  return [{\n    type: undefined,\n    decorators: [{\n      type: Inject,\n      args: [DOCUMENT]\n    }]\n  }, {\n    type: String,\n    decorators: [{\n      type: Inject,\n      args: [PLATFORM_ID]\n    }]\n  }, {\n    type: String,\n    decorators: [{\n      type: Inject,\n      args: [XSRF_COOKIE_NAME]\n    }]\n  }];\n};\n/**\n * `HttpInterceptor` which adds an XSRF token to eligible outgoing requests.\n */\n\n\nvar HttpXsrfInterceptor = /*#__PURE__*/function () {\n  function HttpXsrfInterceptor(tokenService, headerName) {\n    _classCallCheck(this, HttpXsrfInterceptor);\n\n    this.tokenService = tokenService;\n    this.headerName = headerName;\n  }\n\n  _createClass(HttpXsrfInterceptor, [{\n    key: \"intercept\",\n    value: function intercept(req, next) {\n      var lcUrl = req.url.toLowerCase(); // Skip both non-mutating requests and absolute URLs.\n      // Non-mutating requests don't require a token, and absolute URLs require special handling\n      // anyway as the cookie set\n      // on our origin is not the same as the token expected by another origin.\n\n      if (req.method === 'GET' || req.method === 'HEAD' || lcUrl.startsWith('http://') || lcUrl.startsWith('https://')) {\n        return next.handle(req);\n      }\n\n      var token = this.tokenService.getToken(); // Be careful not to overwrite an existing header of the same name.\n\n      if (token !== null && !req.headers.has(this.headerName)) {\n        req = req.clone({\n          headers: req.headers.set(this.headerName, token)\n        });\n      }\n\n      return next.handle(req);\n    }\n  }]);\n\n  return HttpXsrfInterceptor;\n}();\n\nHttpXsrfInterceptor.decorators = [{\n  type: Injectable\n}];\n\nHttpXsrfInterceptor.ctorParameters = function () {\n  return [{\n    type: HttpXsrfTokenExtractor\n  }, {\n    type: String,\n    decorators: [{\n      type: Inject,\n      args: [XSRF_HEADER_NAME]\n    }]\n  }];\n};\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * An injectable `HttpHandler` that applies multiple interceptors\n * to a request before passing it to the given `HttpBackend`.\n *\n * The interceptors are loaded lazily from the injector, to allow\n * interceptors to themselves inject classes depending indirectly\n * on `HttpInterceptingHandler` itself.\n * @see `HttpInterceptor`\n */\n\n\nvar HttpInterceptingHandler = /*#__PURE__*/function () {\n  function HttpInterceptingHandler(backend, injector) {\n    _classCallCheck(this, HttpInterceptingHandler);\n\n    this.backend = backend;\n    this.injector = injector;\n    this.chain = null;\n  }\n\n  _createClass(HttpInterceptingHandler, [{\n    key: \"handle\",\n    value: function handle(req) {\n      if (this.chain === null) {\n        var interceptors = this.injector.get(HTTP_INTERCEPTORS, []);\n        this.chain = interceptors.reduceRight(function (next, interceptor) {\n          return new HttpInterceptorHandler(next, interceptor);\n        }, this.backend);\n      }\n\n      return this.chain.handle(req);\n    }\n  }]);\n\n  return HttpInterceptingHandler;\n}();\n\nHttpInterceptingHandler.decorators = [{\n  type: Injectable\n}];\n\nHttpInterceptingHandler.ctorParameters = function () {\n  return [{\n    type: HttpBackend\n  }, {\n    type: Injector\n  }];\n};\n/**\n * Constructs an `HttpHandler` that applies interceptors\n * to a request before passing it to the given `HttpBackend`.\n *\n * Use as a factory function within `HttpClientModule`.\n *\n *\n */\n\n\nfunction interceptingHandler(backend) {\n  var interceptors = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];\n\n  if (!interceptors) {\n    return backend;\n  }\n\n  return interceptors.reduceRight(function (next, interceptor) {\n    return new HttpInterceptorHandler(next, interceptor);\n  }, backend);\n}\n/**\n * Factory function that determines where to store JSONP callbacks.\n *\n * Ordinarily JSONP callbacks are stored on the `window` object, but this may not exist\n * in test environments. In that case, callbacks are stored on an anonymous object instead.\n *\n *\n */\n\n\nfunction jsonpCallbackContext() {\n  if ((typeof window === \"undefined\" ? \"undefined\" : _typeof(window)) === 'object') {\n    return window;\n  }\n\n  return {};\n}\n/**\n * Configures XSRF protection support for outgoing requests.\n *\n * For a server that supports a cookie-based XSRF protection system,\n * use directly to configure XSRF protection with the correct\n * cookie and header names.\n *\n * If no names are supplied, the default cookie name is `XSRF-TOKEN`\n * and the default header name is `X-XSRF-TOKEN`.\n *\n * @publicApi\n */\n\n\nvar HttpClientXsrfModule = /*#__PURE__*/function () {\n  function HttpClientXsrfModule() {\n    _classCallCheck(this, HttpClientXsrfModule);\n  }\n\n  _createClass(HttpClientXsrfModule, null, [{\n    key: \"disable\",\n    value:\n    /**\n     * Disable the default XSRF protection.\n     */\n    function disable() {\n      return {\n        ngModule: HttpClientXsrfModule,\n        providers: [{\n          provide: HttpXsrfInterceptor,\n          useClass: NoopInterceptor\n        }]\n      };\n    }\n    /**\n     * Configure XSRF protection.\n     * @param options An object that can specify either or both\n     * cookie name or header name.\n     * - Cookie name default is `XSRF-TOKEN`.\n     * - Header name default is `X-XSRF-TOKEN`.\n     *\n     */\n\n  }, {\n    key: \"withOptions\",\n    value: function withOptions() {\n      var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n      return {\n        ngModule: HttpClientXsrfModule,\n        providers: [options.cookieName ? {\n          provide: XSRF_COOKIE_NAME,\n          useValue: options.cookieName\n        } : [], options.headerName ? {\n          provide: XSRF_HEADER_NAME,\n          useValue: options.headerName\n        } : []]\n      };\n    }\n  }]);\n\n  return HttpClientXsrfModule;\n}();\n\nHttpClientXsrfModule.decorators = [{\n  type: NgModule,\n  args: [{\n    providers: [HttpXsrfInterceptor, {\n      provide: HTTP_INTERCEPTORS,\n      useExisting: HttpXsrfInterceptor,\n      multi: true\n    }, {\n      provide: HttpXsrfTokenExtractor,\n      useClass: HttpXsrfCookieExtractor\n    }, {\n      provide: XSRF_COOKIE_NAME,\n      useValue: 'XSRF-TOKEN'\n    }, {\n      provide: XSRF_HEADER_NAME,\n      useValue: 'X-XSRF-TOKEN'\n    }]\n  }]\n}];\n/**\n * Configures the [dependency injector](guide/glossary#injector) for `HttpClient`\n * with supporting services for XSRF. Automatically imported by `HttpClientModule`.\n *\n * You can add interceptors to the chain behind `HttpClient` by binding them to the\n * multiprovider for built-in [DI token](guide/glossary#di-token) `HTTP_INTERCEPTORS`.\n *\n * @publicApi\n */\n\nvar HttpClientModule = /*#__PURE__*/_createClass(function HttpClientModule() {\n  _classCallCheck(this, HttpClientModule);\n});\n\nHttpClientModule.decorators = [{\n  type: NgModule,\n  args: [{\n    /**\n     * Optional configuration for XSRF protection.\n     */\n    imports: [HttpClientXsrfModule.withOptions({\n      cookieName: 'XSRF-TOKEN',\n      headerName: 'X-XSRF-TOKEN'\n    })],\n\n    /**\n     * Configures the [dependency injector](guide/glossary#injector) where it is imported\n     * with supporting services for HTTP communications.\n     */\n    providers: [HttpClient, {\n      provide: HttpHandler,\n      useClass: HttpInterceptingHandler\n    }, HttpXhrBackend, {\n      provide: HttpBackend,\n      useExisting: HttpXhrBackend\n    }, BrowserXhr, {\n      provide: XhrFactory,\n      useExisting: BrowserXhr\n    }]\n  }]\n}];\n/**\n * Configures the [dependency injector](guide/glossary#injector) for `HttpClient`\n * with supporting services for JSONP.\n * Without this module, Jsonp requests reach the backend\n * with method JSONP, where they are rejected.\n *\n * You can add interceptors to the chain behind `HttpClient` by binding them to the\n * multiprovider for built-in [DI token](guide/glossary#di-token) `HTTP_INTERCEPTORS`.\n *\n * @publicApi\n */\n\nvar HttpClientJsonpModule = /*#__PURE__*/_createClass(function HttpClientJsonpModule() {\n  _classCallCheck(this, HttpClientJsonpModule);\n});\n\nHttpClientJsonpModule.decorators = [{\n  type: NgModule,\n  args: [{\n    providers: [JsonpClientBackend, {\n      provide: JsonpCallbackContext,\n      useFactory: jsonpCallbackContext\n    }, {\n      provide: HTTP_INTERCEPTORS,\n      useClass: JsonpInterceptor,\n      multi: true\n    }]\n  }]\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { HTTP_INTERCEPTORS, HttpBackend, HttpClient, HttpClientJsonpModule, HttpClientModule, HttpClientXsrfModule, HttpErrorResponse, HttpEventType, HttpHandler, HttpHeaderResponse, HttpHeaders, HttpParams, HttpRequest, HttpResponse, HttpResponseBase, HttpUrlEncodingCodec, HttpXhrBackend, HttpXsrfTokenExtractor, JsonpClientBackend, JsonpInterceptor, XhrFactory, HttpInterceptingHandler as ɵHttpInterceptingHandler, NoopInterceptor as ɵangular_packages_common_http_http_a, JsonpCallbackContext as ɵangular_packages_common_http_http_b, jsonpCallbackContext as ɵangular_packages_common_http_http_c, BrowserXhr as ɵangular_packages_common_http_http_d, XSRF_COOKIE_NAME as ɵangular_packages_common_http_http_e, XSRF_HEADER_NAME as ɵangular_packages_common_http_http_f, HttpXsrfCookieExtractor as ɵangular_packages_common_http_http_g, HttpXsrfInterceptor as ɵangular_packages_common_http_http_h };","var global = require('../internals/global');\nvar requireObjectCoercible = require('../internals/require-object-coercible');\n\nvar Object = global.Object;\n\n// `ToObject` abstract operation\n// https://tc39.es/ecma262/#sec-toobject\nmodule.exports = function (argument) {\n  return Object(requireObjectCoercible(argument));\n};\n","var DESCRIPTORS = require('../internals/descriptors');\nvar definePropertyModule = require('../internals/object-define-property');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\n\nmodule.exports = DESCRIPTORS ? function (object, key, value) {\n  return definePropertyModule.f(object, key, createPropertyDescriptor(1, value));\n} : function (object, key, value) {\n  object[key] = value;\n  return object;\n};\n","var toPrimitive = require('../internals/to-primitive');\nvar isSymbol = require('../internals/is-symbol');\n\n// `ToPropertyKey` abstract operation\n// https://tc39.es/ecma262/#sec-topropertykey\nmodule.exports = function (argument) {\n  var key = toPrimitive(argument, 'string');\n  return isSymbol(key) ? key : key + '';\n};\n","var global = require('../internals/global');\n\nvar String = global.String;\n\nmodule.exports = function (argument) {\n  try {\n    return String(argument);\n  } catch (error) {\n    return 'Object';\n  }\n};\n","var NATIVE_WEAK_MAP = require('../internals/native-weak-map');\nvar global = require('../internals/global');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar isObject = require('../internals/is-object');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar hasOwn = require('../internals/has-own-property');\nvar shared = require('../internals/shared-store');\nvar sharedKey = require('../internals/shared-key');\nvar hiddenKeys = require('../internals/hidden-keys');\n\nvar OBJECT_ALREADY_INITIALIZED = 'Object already initialized';\nvar TypeError = global.TypeError;\nvar WeakMap = global.WeakMap;\nvar set, get, has;\n\nvar enforce = function (it) {\n  return has(it) ? get(it) : set(it, {});\n};\n\nvar getterFor = function (TYPE) {\n  return function (it) {\n    var state;\n    if (!isObject(it) || (state = get(it)).type !== TYPE) {\n      throw TypeError('Incompatible receiver, ' + TYPE + ' required');\n    } return state;\n  };\n};\n\nif (NATIVE_WEAK_MAP || shared.state) {\n  var store = shared.state || (shared.state = new WeakMap());\n  var wmget = uncurryThis(store.get);\n  var wmhas = uncurryThis(store.has);\n  var wmset = uncurryThis(store.set);\n  set = function (it, metadata) {\n    if (wmhas(store, it)) throw new TypeError(OBJECT_ALREADY_INITIALIZED);\n    metadata.facade = it;\n    wmset(store, it, metadata);\n    return metadata;\n  };\n  get = function (it) {\n    return wmget(store, it) || {};\n  };\n  has = function (it) {\n    return wmhas(store, it);\n  };\n} else {\n  var STATE = sharedKey('state');\n  hiddenKeys[STATE] = true;\n  set = function (it, metadata) {\n    if (hasOwn(it, STATE)) throw new TypeError(OBJECT_ALREADY_INITIALIZED);\n    metadata.facade = it;\n    createNonEnumerableProperty(it, STATE, metadata);\n    return metadata;\n  };\n  get = function (it) {\n    return hasOwn(it, STATE) ? it[STATE] : {};\n  };\n  has = function (it) {\n    return hasOwn(it, STATE);\n  };\n}\n\nmodule.exports = {\n  set: set,\n  get: get,\n  has: has,\n  enforce: enforce,\n  getterFor: getterFor\n};\n","module.exports = {};\n","/* global ActiveXObject -- old IE, WSH */\nvar anObject = require('../internals/an-object');\nvar definePropertiesModule = require('../internals/object-define-properties');\nvar enumBugKeys = require('../internals/enum-bug-keys');\nvar hiddenKeys = require('../internals/hidden-keys');\nvar html = require('../internals/html');\nvar documentCreateElement = require('../internals/document-create-element');\nvar sharedKey = require('../internals/shared-key');\n\nvar GT = '>';\nvar LT = '<';\nvar PROTOTYPE = 'prototype';\nvar SCRIPT = 'script';\nvar IE_PROTO = sharedKey('IE_PROTO');\n\nvar EmptyConstructor = function () { /* empty */ };\n\nvar scriptTag = function (content) {\n  return LT + SCRIPT + GT + content + LT + '/' + SCRIPT + GT;\n};\n\n// Create object with fake `null` prototype: use ActiveX Object with cleared prototype\nvar NullProtoObjectViaActiveX = function (activeXDocument) {\n  activeXDocument.write(scriptTag(''));\n  activeXDocument.close();\n  var temp = activeXDocument.parentWindow.Object;\n  activeXDocument = null; // avoid memory leak\n  return temp;\n};\n\n// Create object with fake `null` prototype: use iframe Object with cleared prototype\nvar NullProtoObjectViaIFrame = function () {\n  // Thrash, waste and sodomy: IE GC bug\n  var iframe = documentCreateElement('iframe');\n  var JS = 'java' + SCRIPT + ':';\n  var iframeDocument;\n  iframe.style.display = 'none';\n  html.appendChild(iframe);\n  // https://github.com/zloirock/core-js/issues/475\n  iframe.src = String(JS);\n  iframeDocument = iframe.contentWindow.document;\n  iframeDocument.open();\n  iframeDocument.write(scriptTag('document.F=Object'));\n  iframeDocument.close();\n  return iframeDocument.F;\n};\n\n// Check for document.domain and active x support\n// No need to use active x approach when document.domain is not set\n// see https://github.com/es-shims/es5-shim/issues/150\n// variation of https://github.com/kitcambridge/es5-shim/commit/4f738ac066346\n// avoid IE GC bug\nvar activeXDocument;\nvar NullProtoObject = function () {\n  try {\n    activeXDocument = new ActiveXObject('htmlfile');\n  } catch (error) { /* ignore */ }\n  NullProtoObject = typeof document != 'undefined'\n    ? document.domain && activeXDocument\n      ? NullProtoObjectViaActiveX(activeXDocument) // old IE\n      : NullProtoObjectViaIFrame()\n    : NullProtoObjectViaActiveX(activeXDocument); // WSH\n  var length = enumBugKeys.length;\n  while (length--) delete NullProtoObject[PROTOTYPE][enumBugKeys[length]];\n  return NullProtoObject();\n};\n\nhiddenKeys[IE_PROTO] = true;\n\n// `Object.create` method\n// https://tc39.es/ecma262/#sec-object.create\nmodule.exports = Object.create || function create(O, Properties) {\n  var result;\n  if (O !== null) {\n    EmptyConstructor[PROTOTYPE] = anObject(O);\n    result = new EmptyConstructor();\n    EmptyConstructor[PROTOTYPE] = null;\n    // add \"__proto__\" for Object.getPrototypeOf polyfill\n    result[IE_PROTO] = O;\n  } else result = NullProtoObject();\n  return Properties === undefined ? result : definePropertiesModule.f(result, Properties);\n};\n","var $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar hiddenKeys = require('../internals/hidden-keys');\nvar isObject = require('../internals/is-object');\nvar hasOwn = require('../internals/has-own-property');\nvar defineProperty = require('../internals/object-define-property').f;\nvar getOwnPropertyNamesModule = require('../internals/object-get-own-property-names');\nvar getOwnPropertyNamesExternalModule = require('../internals/object-get-own-property-names-external');\nvar isExtensible = require('../internals/object-is-extensible');\nvar uid = require('../internals/uid');\nvar FREEZING = require('../internals/freezing');\n\nvar REQUIRED = false;\nvar METADATA = uid('meta');\nvar id = 0;\n\nvar setMetadata = function (it) {\n  defineProperty(it, METADATA, { value: {\n    objectID: 'O' + id++, // object ID\n    weakData: {}          // weak collections IDs\n  } });\n};\n\nvar fastKey = function (it, create) {\n  // return a primitive with prefix\n  if (!isObject(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it;\n  if (!hasOwn(it, METADATA)) {\n    // can't set metadata to uncaught frozen object\n    if (!isExtensible(it)) return 'F';\n    // not necessary to add metadata\n    if (!create) return 'E';\n    // add missing metadata\n    setMetadata(it);\n  // return object ID\n  } return it[METADATA].objectID;\n};\n\nvar getWeakData = function (it, create) {\n  if (!hasOwn(it, METADATA)) {\n    // can't set metadata to uncaught frozen object\n    if (!isExtensible(it)) return true;\n    // not necessary to add metadata\n    if (!create) return false;\n    // add missing metadata\n    setMetadata(it);\n  // return the store of weak collections IDs\n  } return it[METADATA].weakData;\n};\n\n// add metadata on freeze-family methods calling\nvar onFreeze = function (it) {\n  if (FREEZING && REQUIRED && isExtensible(it) && !hasOwn(it, METADATA)) setMetadata(it);\n  return it;\n};\n\nvar enable = function () {\n  meta.enable = function () { /* empty */ };\n  REQUIRED = true;\n  var getOwnPropertyNames = getOwnPropertyNamesModule.f;\n  var splice = uncurryThis([].splice);\n  var test = {};\n  test[METADATA] = 1;\n\n  // prevent exposing of metadata key\n  if (getOwnPropertyNames(test).length) {\n    getOwnPropertyNamesModule.f = function (it) {\n      var result = getOwnPropertyNames(it);\n      for (var i = 0, length = result.length; i < length; i++) {\n        if (result[i] === METADATA) {\n          splice(result, i, 1);\n          break;\n        }\n      } return result;\n    };\n\n    $({ target: 'Object', stat: true, forced: true }, {\n      getOwnPropertyNames: getOwnPropertyNamesExternalModule.f\n    });\n  }\n};\n\nvar meta = module.exports = {\n  enable: enable,\n  fastKey: fastKey,\n  getWeakData: getWeakData,\n  onFreeze: onFreeze\n};\n\nhiddenKeys[METADATA] = true;\n","module.exports = {};\n","/** PURE_IMPORTS_START  PURE_IMPORTS_END */\nexport function identity(x) {\n  return x;\n}","/** PURE_IMPORTS_START _Observable,_util_subscribeToArray,_scheduled_scheduleArray PURE_IMPORTS_END */\nimport { Observable } from '../Observable';\nimport { subscribeToArray } from '../util/subscribeToArray';\nimport { scheduleArray } from '../scheduled/scheduleArray';\nexport function fromArray(input, scheduler) {\n  if (!scheduler) {\n    return new Observable(subscribeToArray(input));\n  } else {\n    return scheduleArray(input, scheduler);\n  }\n}","/** PURE_IMPORTS_START  PURE_IMPORTS_END */\nexport var subscribeToArray = function subscribeToArray(array) {\n  return function (subscriber) {\n    for (var i = 0, len = array.length; i < len && !subscriber.closed; i++) {\n      subscriber.next(array[i]);\n    }\n\n    subscriber.complete();\n  };\n};","/** PURE_IMPORTS_START tslib,_map,_observable_from,_innerSubscribe PURE_IMPORTS_END */\nimport * as tslib_1 from \"tslib\";\nimport { map } from './map';\nimport { from } from '../observable/from';\nimport { SimpleOuterSubscriber, SimpleInnerSubscriber, innerSubscribe } from '../innerSubscribe';\nexport function mergeMap(project, resultSelector, concurrent) {\n  if (concurrent === void 0) {\n    concurrent = Number.POSITIVE_INFINITY;\n  }\n\n  if (typeof resultSelector === 'function') {\n    return function (source) {\n      return source.pipe(mergeMap(function (a, i) {\n        return from(project(a, i)).pipe(map(function (b, ii) {\n          return resultSelector(a, b, i, ii);\n        }));\n      }, concurrent));\n    };\n  } else if (typeof resultSelector === 'number') {\n    concurrent = resultSelector;\n  }\n\n  return function (source) {\n    return source.lift(new MergeMapOperator(project, concurrent));\n  };\n}\n\nvar MergeMapOperator = /*@__PURE__*/function () {\n  function MergeMapOperator(project, concurrent) {\n    if (concurrent === void 0) {\n      concurrent = Number.POSITIVE_INFINITY;\n    }\n\n    this.project = project;\n    this.concurrent = concurrent;\n  }\n\n  MergeMapOperator.prototype.call = function (observer, source) {\n    return source.subscribe(new MergeMapSubscriber(observer, this.project, this.concurrent));\n  };\n\n  return MergeMapOperator;\n}();\n\nexport { MergeMapOperator };\n\nvar MergeMapSubscriber = /*@__PURE__*/function (_super) {\n  tslib_1.__extends(MergeMapSubscriber, _super);\n\n  function MergeMapSubscriber(destination, project, concurrent) {\n    if (concurrent === void 0) {\n      concurrent = Number.POSITIVE_INFINITY;\n    }\n\n    var _this = _super.call(this, destination) || this;\n\n    _this.project = project;\n    _this.concurrent = concurrent;\n    _this.hasCompleted = false;\n    _this.buffer = [];\n    _this.active = 0;\n    _this.index = 0;\n    return _this;\n  }\n\n  MergeMapSubscriber.prototype._next = function (value) {\n    if (this.active < this.concurrent) {\n      this._tryNext(value);\n    } else {\n      this.buffer.push(value);\n    }\n  };\n\n  MergeMapSubscriber.prototype._tryNext = function (value) {\n    var result;\n    var index = this.index++;\n\n    try {\n      result = this.project(value, index);\n    } catch (err) {\n      this.destination.error(err);\n      return;\n    }\n\n    this.active++;\n\n    this._innerSub(result);\n  };\n\n  MergeMapSubscriber.prototype._innerSub = function (ish) {\n    var innerSubscriber = new SimpleInnerSubscriber(this);\n    var destination = this.destination;\n    destination.add(innerSubscriber);\n    var innerSubscription = innerSubscribe(ish, innerSubscriber);\n\n    if (innerSubscription !== innerSubscriber) {\n      destination.add(innerSubscription);\n    }\n  };\n\n  MergeMapSubscriber.prototype._complete = function () {\n    this.hasCompleted = true;\n\n    if (this.active === 0 && this.buffer.length === 0) {\n      this.destination.complete();\n    }\n\n    this.unsubscribe();\n  };\n\n  MergeMapSubscriber.prototype.notifyNext = function (innerValue) {\n    this.destination.next(innerValue);\n  };\n\n  MergeMapSubscriber.prototype.notifyComplete = function () {\n    var buffer = this.buffer;\n    this.active--;\n\n    if (buffer.length > 0) {\n      this._next(buffer.shift());\n    } else if (this.active === 0 && this.hasCompleted) {\n      this.destination.complete();\n    }\n  };\n\n  return MergeMapSubscriber;\n}(SimpleOuterSubscriber);\n\nexport { MergeMapSubscriber };\nexport var flatMap = mergeMap;","/** PURE_IMPORTS_START  PURE_IMPORTS_END */\nexport var isArrayLike = function isArrayLike(x) {\n  return x && typeof x.length === 'number' && typeof x !== 'function';\n};","/** PURE_IMPORTS_START  PURE_IMPORTS_END */\nexport function isPromise(value) {\n  return !!value && typeof value.subscribe !== 'function' && typeof value.then === 'function';\n}","function _typeof(obj) { \"@babel/helpers - typeof\"; return _typeof = \"function\" == typeof Symbol && \"symbol\" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && \"function\" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }, _typeof(obj); }\n\n/** PURE_IMPORTS_START _scheduleObservable,_schedulePromise,_scheduleArray,_scheduleIterable,_util_isInteropObservable,_util_isPromise,_util_isArrayLike,_util_isIterable PURE_IMPORTS_END */\nimport { scheduleObservable } from './scheduleObservable';\nimport { schedulePromise } from './schedulePromise';\nimport { scheduleArray } from './scheduleArray';\nimport { scheduleIterable } from './scheduleIterable';\nimport { isInteropObservable } from '../util/isInteropObservable';\nimport { isPromise } from '../util/isPromise';\nimport { isArrayLike } from '../util/isArrayLike';\nimport { isIterable } from '../util/isIterable';\nexport function scheduled(input, scheduler) {\n  if (input != null) {\n    if (isInteropObservable(input)) {\n      return scheduleObservable(input, scheduler);\n    } else if (isPromise(input)) {\n      return schedulePromise(input, scheduler);\n    } else if (isArrayLike(input)) {\n      return scheduleArray(input, scheduler);\n    } else if (isIterable(input) || typeof input === 'string') {\n      return scheduleIterable(input, scheduler);\n    }\n  }\n\n  throw new TypeError((input !== null && _typeof(input) || input) + ' is not observable');\n}","/** PURE_IMPORTS_START _symbol_observable PURE_IMPORTS_END */\nimport { observable as Symbol_observable } from '../symbol/observable';\nexport function isInteropObservable(input) {\n  return input && typeof input[Symbol_observable] === 'function';\n}","/** PURE_IMPORTS_START _Observable,_Subscription,_symbol_observable PURE_IMPORTS_END */\nimport { Observable } from '../Observable';\nimport { Subscription } from '../Subscription';\nimport { observable as Symbol_observable } from '../symbol/observable';\nexport function scheduleObservable(input, scheduler) {\n  return new Observable(function (subscriber) {\n    var sub = new Subscription();\n    sub.add(scheduler.schedule(function () {\n      var observable = input[Symbol_observable]();\n      sub.add(observable.subscribe({\n        next: function next(value) {\n          sub.add(scheduler.schedule(function () {\n            return subscriber.next(value);\n          }));\n        },\n        error: function error(err) {\n          sub.add(scheduler.schedule(function () {\n            return subscriber.error(err);\n          }));\n        },\n        complete: function complete() {\n          sub.add(scheduler.schedule(function () {\n            return subscriber.complete();\n          }));\n        }\n      }));\n    }));\n    return sub;\n  });\n}","/** PURE_IMPORTS_START _Observable,_Subscription PURE_IMPORTS_END */\nimport { Observable } from '../Observable';\nimport { Subscription } from '../Subscription';\nexport function schedulePromise(input, scheduler) {\n  return new Observable(function (subscriber) {\n    var sub = new Subscription();\n    sub.add(scheduler.schedule(function () {\n      return input.then(function (value) {\n        sub.add(scheduler.schedule(function () {\n          subscriber.next(value);\n          sub.add(scheduler.schedule(function () {\n            return subscriber.complete();\n          }));\n        }));\n      }, function (err) {\n        sub.add(scheduler.schedule(function () {\n          return subscriber.error(err);\n        }));\n      });\n    }));\n    return sub;\n  });\n}","/** PURE_IMPORTS_START _symbol_iterator PURE_IMPORTS_END */\nimport { iterator as Symbol_iterator } from '../symbol/iterator';\nexport function isIterable(input) {\n  return input && typeof input[Symbol_iterator] === 'function';\n}","/** PURE_IMPORTS_START _Observable,_Subscription,_symbol_iterator PURE_IMPORTS_END */\nimport { Observable } from '../Observable';\nimport { Subscription } from '../Subscription';\nimport { iterator as Symbol_iterator } from '../symbol/iterator';\nexport function scheduleIterable(input, scheduler) {\n  if (!input) {\n    throw new Error('Iterable cannot be null');\n  }\n\n  return new Observable(function (subscriber) {\n    var sub = new Subscription();\n    var iterator;\n    sub.add(function () {\n      if (iterator && typeof iterator.return === 'function') {\n        iterator.return();\n      }\n    });\n    sub.add(scheduler.schedule(function () {\n      iterator = input[Symbol_iterator]();\n      sub.add(scheduler.schedule(function () {\n        if (subscriber.closed) {\n          return;\n        }\n\n        var value;\n        var done;\n\n        try {\n          var result = iterator.next();\n          value = result.value;\n          done = result.done;\n        } catch (err) {\n          subscriber.error(err);\n          return;\n        }\n\n        if (done) {\n          subscriber.complete();\n        } else {\n          subscriber.next(value);\n          this.schedule();\n        }\n      }));\n    }));\n    return sub;\n  });\n}","/** PURE_IMPORTS_START _Observable,_util_subscribeTo,_scheduled_scheduled PURE_IMPORTS_END */\nimport { Observable } from '../Observable';\nimport { subscribeTo } from '../util/subscribeTo';\nimport { scheduled } from '../scheduled/scheduled';\nexport function from(input, scheduler) {\n  if (!scheduler) {\n    if (input instanceof Observable) {\n      return input;\n    }\n\n    return new Observable(subscribeTo(input));\n  } else {\n    return scheduled(input, scheduler);\n  }\n}","/** PURE_IMPORTS_START _subscribeToArray,_subscribeToPromise,_subscribeToIterable,_subscribeToObservable,_isArrayLike,_isPromise,_isObject,_symbol_iterator,_symbol_observable PURE_IMPORTS_END */\nimport { subscribeToArray } from './subscribeToArray';\nimport { subscribeToPromise } from './subscribeToPromise';\nimport { subscribeToIterable } from './subscribeToIterable';\nimport { subscribeToObservable } from './subscribeToObservable';\nimport { isArrayLike } from './isArrayLike';\nimport { isPromise } from './isPromise';\nimport { isObject } from './isObject';\nimport { iterator as Symbol_iterator } from '../symbol/iterator';\nimport { observable as Symbol_observable } from '../symbol/observable';\nexport var subscribeTo = function subscribeTo(result) {\n  if (!!result && typeof result[Symbol_observable] === 'function') {\n    return subscribeToObservable(result);\n  } else if (isArrayLike(result)) {\n    return subscribeToArray(result);\n  } else if (isPromise(result)) {\n    return subscribeToPromise(result);\n  } else if (!!result && typeof result[Symbol_iterator] === 'function') {\n    return subscribeToIterable(result);\n  } else {\n    var value = isObject(result) ? 'an invalid object' : \"'\" + result + \"'\";\n    var msg = \"You provided \" + value + \" where a stream was expected.\" + ' You can provide an Observable, Promise, Array, or Iterable.';\n    throw new TypeError(msg);\n  }\n};","/** PURE_IMPORTS_START _symbol_observable PURE_IMPORTS_END */\nimport { observable as Symbol_observable } from '../symbol/observable';\nexport var subscribeToObservable = function subscribeToObservable(obj) {\n  return function (subscriber) {\n    var obs = obj[Symbol_observable]();\n\n    if (typeof obs.subscribe !== 'function') {\n      throw new TypeError('Provided object does not correctly implement Symbol.observable');\n    } else {\n      return obs.subscribe(subscriber);\n    }\n  };\n};","/** PURE_IMPORTS_START _hostReportError PURE_IMPORTS_END */\nimport { hostReportError } from './hostReportError';\nexport var subscribeToPromise = function subscribeToPromise(promise) {\n  return function (subscriber) {\n    promise.then(function (value) {\n      if (!subscriber.closed) {\n        subscriber.next(value);\n        subscriber.complete();\n      }\n    }, function (err) {\n      return subscriber.error(err);\n    }).then(null, hostReportError);\n    return subscriber;\n  };\n};","/** PURE_IMPORTS_START _symbol_iterator PURE_IMPORTS_END */\nimport { iterator as Symbol_iterator } from '../symbol/iterator';\nexport var subscribeToIterable = function subscribeToIterable(iterable) {\n  return function (subscriber) {\n    var iterator = iterable[Symbol_iterator]();\n\n    do {\n      var item = void 0;\n\n      try {\n        item = iterator.next();\n      } catch (err) {\n        subscriber.error(err);\n        return subscriber;\n      }\n\n      if (item.done) {\n        subscriber.complete();\n        break;\n      }\n\n      subscriber.next(item.value);\n\n      if (subscriber.closed) {\n        break;\n      }\n    } while (true);\n\n    if (typeof iterator.return === 'function') {\n      subscriber.add(function () {\n        if (iterator.return) {\n          iterator.return();\n        }\n      });\n    }\n\n    return subscriber;\n  };\n};","function _typeof(obj) { \"@babel/helpers - typeof\"; return _typeof = \"function\" == typeof Symbol && \"symbol\" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && \"function\" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }, _typeof(obj); }\n\n/**\n * @license\n * Lodash <https://lodash.com/>\n * Copyright OpenJS Foundation and other contributors <https://openjsf.org/>\n * Released under MIT license <https://lodash.com/license>\n * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>\n * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors\n */\n;\n(function () {\n  /** Used as a safe reference for `undefined` in pre-ES5 environments. */\n  var undefined;\n  /** Used as the semantic version number. */\n\n  var VERSION = '4.17.21';\n  /** Used as the size to enable large array optimizations. */\n\n  var LARGE_ARRAY_SIZE = 200;\n  /** Error message constants. */\n\n  var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',\n      FUNC_ERROR_TEXT = 'Expected a function',\n      INVALID_TEMPL_VAR_ERROR_TEXT = 'Invalid `variable` option passed into `_.template`';\n  /** Used to stand-in for `undefined` hash values. */\n\n  var HASH_UNDEFINED = '__lodash_hash_undefined__';\n  /** Used as the maximum memoize cache size. */\n\n  var MAX_MEMOIZE_SIZE = 500;\n  /** Used as the internal argument placeholder. */\n\n  var PLACEHOLDER = '__lodash_placeholder__';\n  /** Used to compose bitmasks for cloning. */\n\n  var CLONE_DEEP_FLAG = 1,\n      CLONE_FLAT_FLAG = 2,\n      CLONE_SYMBOLS_FLAG = 4;\n  /** Used to compose bitmasks for value comparisons. */\n\n  var COMPARE_PARTIAL_FLAG = 1,\n      COMPARE_UNORDERED_FLAG = 2;\n  /** Used to compose bitmasks for function metadata. */\n\n  var WRAP_BIND_FLAG = 1,\n      WRAP_BIND_KEY_FLAG = 2,\n      WRAP_CURRY_BOUND_FLAG = 4,\n      WRAP_CURRY_FLAG = 8,\n      WRAP_CURRY_RIGHT_FLAG = 16,\n      WRAP_PARTIAL_FLAG = 32,\n      WRAP_PARTIAL_RIGHT_FLAG = 64,\n      WRAP_ARY_FLAG = 128,\n      WRAP_REARG_FLAG = 256,\n      WRAP_FLIP_FLAG = 512;\n  /** Used as default options for `_.truncate`. */\n\n  var DEFAULT_TRUNC_LENGTH = 30,\n      DEFAULT_TRUNC_OMISSION = '...';\n  /** Used to detect hot functions by number of calls within a span of milliseconds. */\n\n  var HOT_COUNT = 800,\n      HOT_SPAN = 16;\n  /** Used to indicate the type of lazy iteratees. */\n\n  var LAZY_FILTER_FLAG = 1,\n      LAZY_MAP_FLAG = 2,\n      LAZY_WHILE_FLAG = 3;\n  /** Used as references for various `Number` constants. */\n\n  var INFINITY = 1 / 0,\n      MAX_SAFE_INTEGER = 9007199254740991,\n      MAX_INTEGER = 1.7976931348623157e+308,\n      NAN = 0 / 0;\n  /** Used as references for the maximum length and index of an array. */\n\n  var MAX_ARRAY_LENGTH = 4294967295,\n      MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,\n      HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;\n  /** Used to associate wrap methods with their bit flags. */\n\n  var wrapFlags = [['ary', WRAP_ARY_FLAG], ['bind', WRAP_BIND_FLAG], ['bindKey', WRAP_BIND_KEY_FLAG], ['curry', WRAP_CURRY_FLAG], ['curryRight', WRAP_CURRY_RIGHT_FLAG], ['flip', WRAP_FLIP_FLAG], ['partial', WRAP_PARTIAL_FLAG], ['partialRight', WRAP_PARTIAL_RIGHT_FLAG], ['rearg', WRAP_REARG_FLAG]];\n  /** `Object#toString` result references. */\n\n  var argsTag = '[object Arguments]',\n      arrayTag = '[object Array]',\n      asyncTag = '[object AsyncFunction]',\n      boolTag = '[object Boolean]',\n      dateTag = '[object Date]',\n      domExcTag = '[object DOMException]',\n      errorTag = '[object Error]',\n      funcTag = '[object Function]',\n      genTag = '[object GeneratorFunction]',\n      mapTag = '[object Map]',\n      numberTag = '[object Number]',\n      nullTag = '[object Null]',\n      objectTag = '[object Object]',\n      promiseTag = '[object Promise]',\n      proxyTag = '[object Proxy]',\n      regexpTag = '[object RegExp]',\n      setTag = '[object Set]',\n      stringTag = '[object String]',\n      symbolTag = '[object Symbol]',\n      undefinedTag = '[object Undefined]',\n      weakMapTag = '[object WeakMap]',\n      weakSetTag = '[object WeakSet]';\n  var arrayBufferTag = '[object ArrayBuffer]',\n      dataViewTag = '[object DataView]',\n      float32Tag = '[object Float32Array]',\n      float64Tag = '[object Float64Array]',\n      int8Tag = '[object Int8Array]',\n      int16Tag = '[object Int16Array]',\n      int32Tag = '[object Int32Array]',\n      uint8Tag = '[object Uint8Array]',\n      uint8ClampedTag = '[object Uint8ClampedArray]',\n      uint16Tag = '[object Uint16Array]',\n      uint32Tag = '[object Uint32Array]';\n  /** Used to match empty string literals in compiled template source. */\n\n  var reEmptyStringLeading = /\\b__p \\+= '';/g,\n      reEmptyStringMiddle = /\\b(__p \\+=) '' \\+/g,\n      reEmptyStringTrailing = /(__e\\(.*?\\)|\\b__t\\)) \\+\\n'';/g;\n  /** Used to match HTML entities and HTML characters. */\n\n  var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,\n      reUnescapedHtml = /[&<>\"']/g,\n      reHasEscapedHtml = RegExp(reEscapedHtml.source),\n      reHasUnescapedHtml = RegExp(reUnescapedHtml.source);\n  /** Used to match template delimiters. */\n\n  var reEscape = /<%-([\\s\\S]+?)%>/g,\n      reEvaluate = /<%([\\s\\S]+?)%>/g,\n      reInterpolate = /<%=([\\s\\S]+?)%>/g;\n  /** Used to match property names within property paths. */\n\n  var reIsDeepProp = /\\.|\\[(?:[^[\\]]*|([\"'])(?:(?!\\1)[^\\\\]|\\\\.)*?\\1)\\]/,\n      reIsPlainProp = /^\\w*$/,\n      rePropName = /[^.[\\]]+|\\[(?:(-?\\d+(?:\\.\\d+)?)|([\"'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2)\\]|(?=(?:\\.|\\[\\])(?:\\.|\\[\\]|$))/g;\n  /**\n   * Used to match `RegExp`\n   * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).\n   */\n\n  var reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g,\n      reHasRegExpChar = RegExp(reRegExpChar.source);\n  /** Used to match leading whitespace. */\n\n  var reTrimStart = /^\\s+/;\n  /** Used to match a single whitespace character. */\n\n  var reWhitespace = /\\s/;\n  /** Used to match wrap detail comments. */\n\n  var reWrapComment = /\\{(?:\\n\\/\\* \\[wrapped with .+\\] \\*\\/)?\\n?/,\n      reWrapDetails = /\\{\\n\\/\\* \\[wrapped with (.+)\\] \\*/,\n      reSplitDetails = /,? & /;\n  /** Used to match words composed of alphanumeric characters. */\n\n  var reAsciiWord = /[^\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\x7f]+/g;\n  /**\n   * Used to validate the `validate` option in `_.template` variable.\n   *\n   * Forbids characters which could potentially change the meaning of the function argument definition:\n   * - \"(),\" (modification of function parameters)\n   * - \"=\" (default value)\n   * - \"[]{}\" (destructuring of function parameters)\n   * - \"/\" (beginning of a comment)\n   * - whitespace\n   */\n\n  var reForbiddenIdentifierChars = /[()=,{}\\[\\]\\/\\s]/;\n  /** Used to match backslashes in property paths. */\n\n  var reEscapeChar = /\\\\(\\\\)?/g;\n  /**\n   * Used to match\n   * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).\n   */\n\n  var reEsTemplate = /\\$\\{([^\\\\}]*(?:\\\\.[^\\\\}]*)*)\\}/g;\n  /** Used to match `RegExp` flags from their coerced string values. */\n\n  var reFlags = /\\w*$/;\n  /** Used to detect bad signed hexadecimal string values. */\n\n  var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\n  /** Used to detect binary string values. */\n\n  var reIsBinary = /^0b[01]+$/i;\n  /** Used to detect host constructors (Safari). */\n\n  var reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n  /** Used to detect octal string values. */\n\n  var reIsOctal = /^0o[0-7]+$/i;\n  /** Used to detect unsigned integer values. */\n\n  var reIsUint = /^(?:0|[1-9]\\d*)$/;\n  /** Used to match Latin Unicode letters (excluding mathematical operators). */\n\n  var reLatin = /[\\xc0-\\xd6\\xd8-\\xf6\\xf8-\\xff\\u0100-\\u017f]/g;\n  /** Used to ensure capturing order of template delimiters. */\n\n  var reNoMatch = /($^)/;\n  /** Used to match unescaped characters in compiled string literals. */\n\n  var reUnescapedString = /['\\n\\r\\u2028\\u2029\\\\]/g;\n  /** Used to compose unicode character classes. */\n\n  var rsAstralRange = \"\\\\ud800-\\\\udfff\",\n      rsComboMarksRange = \"\\\\u0300-\\\\u036f\",\n      reComboHalfMarksRange = \"\\\\ufe20-\\\\ufe2f\",\n      rsComboSymbolsRange = \"\\\\u20d0-\\\\u20ff\",\n      rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,\n      rsDingbatRange = \"\\\\u2700-\\\\u27bf\",\n      rsLowerRange = 'a-z\\\\xdf-\\\\xf6\\\\xf8-\\\\xff',\n      rsMathOpRange = '\\\\xac\\\\xb1\\\\xd7\\\\xf7',\n      rsNonCharRange = '\\\\x00-\\\\x2f\\\\x3a-\\\\x40\\\\x5b-\\\\x60\\\\x7b-\\\\xbf',\n      rsPunctuationRange = \"\\\\u2000-\\\\u206f\",\n      rsSpaceRange = \" \\\\t\\\\x0b\\\\f\\\\xa0\\\\ufeff\\\\n\\\\r\\\\u2028\\\\u2029\\\\u1680\\\\u180e\\\\u2000\\\\u2001\\\\u2002\\\\u2003\\\\u2004\\\\u2005\\\\u2006\\\\u2007\\\\u2008\\\\u2009\\\\u200a\\\\u202f\\\\u205f\\\\u3000\",\n      rsUpperRange = 'A-Z\\\\xc0-\\\\xd6\\\\xd8-\\\\xde',\n      rsVarRange = \"\\\\ufe0e\\\\ufe0f\",\n      rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;\n  /** Used to compose unicode capture groups. */\n\n  var rsApos = \"['\\u2019]\",\n      rsAstral = '[' + rsAstralRange + ']',\n      rsBreak = '[' + rsBreakRange + ']',\n      rsCombo = '[' + rsComboRange + ']',\n      rsDigits = '\\\\d+',\n      rsDingbat = '[' + rsDingbatRange + ']',\n      rsLower = '[' + rsLowerRange + ']',\n      rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',\n      rsFitz = \"\\\\ud83c[\\\\udffb-\\\\udfff]\",\n      rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',\n      rsNonAstral = '[^' + rsAstralRange + ']',\n      rsRegional = \"(?:\\\\ud83c[\\\\udde6-\\\\uddff]){2}\",\n      rsSurrPair = \"[\\\\ud800-\\\\udbff][\\\\udc00-\\\\udfff]\",\n      rsUpper = '[' + rsUpperRange + ']',\n      rsZWJ = \"\\\\u200d\";\n  /** Used to compose unicode regexes. */\n\n  var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',\n      rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',\n      rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',\n      rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',\n      reOptMod = rsModifier + '?',\n      rsOptVar = '[' + rsVarRange + ']?',\n      rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',\n      rsOrdLower = '\\\\d*(?:1st|2nd|3rd|(?![123])\\\\dth)(?=\\\\b|[A-Z_])',\n      rsOrdUpper = '\\\\d*(?:1ST|2ND|3RD|(?![123])\\\\dTH)(?=\\\\b|[a-z_])',\n      rsSeq = rsOptVar + reOptMod + rsOptJoin,\n      rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,\n      rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';\n  /** Used to match apostrophes. */\n\n  var reApos = RegExp(rsApos, 'g');\n  /**\n   * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and\n   * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).\n   */\n\n  var reComboMark = RegExp(rsCombo, 'g');\n  /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */\n\n  var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');\n  /** Used to match complex or compound words. */\n\n  var reUnicodeWord = RegExp([rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')', rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')', rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower, rsUpper + '+' + rsOptContrUpper, rsOrdUpper, rsOrdLower, rsDigits, rsEmoji].join('|'), 'g');\n  /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */\n\n  var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']');\n  /** Used to detect strings that need a more robust regexp to match words. */\n\n  var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;\n  /** Used to assign default `context` object properties. */\n\n  var contextProps = ['Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array', 'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object', 'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array', 'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap', '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'];\n  /** Used to make template sourceURLs easier to identify. */\n\n  var templateCounter = -1;\n  /** Used to identify `toStringTag` values of typed arrays. */\n\n  var typedArrayTags = {};\n  typedArrayTags[float32Tag] = typedArrayTags[float64Tag] = typedArrayTags[int8Tag] = typedArrayTags[int16Tag] = typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] = typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] = typedArrayTags[uint32Tag] = true;\n  typedArrayTags[argsTag] = typedArrayTags[arrayTag] = typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] = typedArrayTags[dataViewTag] = typedArrayTags[dateTag] = typedArrayTags[errorTag] = typedArrayTags[funcTag] = typedArrayTags[mapTag] = typedArrayTags[numberTag] = typedArrayTags[objectTag] = typedArrayTags[regexpTag] = typedArrayTags[setTag] = typedArrayTags[stringTag] = typedArrayTags[weakMapTag] = false;\n  /** Used to identify `toStringTag` values supported by `_.clone`. */\n\n  var cloneableTags = {};\n  cloneableTags[argsTag] = cloneableTags[arrayTag] = cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] = cloneableTags[boolTag] = cloneableTags[dateTag] = cloneableTags[float32Tag] = cloneableTags[float64Tag] = cloneableTags[int8Tag] = cloneableTags[int16Tag] = cloneableTags[int32Tag] = cloneableTags[mapTag] = cloneableTags[numberTag] = cloneableTags[objectTag] = cloneableTags[regexpTag] = cloneableTags[setTag] = cloneableTags[stringTag] = cloneableTags[symbolTag] = cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] = cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;\n  cloneableTags[errorTag] = cloneableTags[funcTag] = cloneableTags[weakMapTag] = false;\n  /** Used to map Latin Unicode letters to basic Latin letters. */\n\n  var deburredLetters = {\n    // Latin-1 Supplement block.\n    '\\xc0': 'A',\n    '\\xc1': 'A',\n    '\\xc2': 'A',\n    '\\xc3': 'A',\n    '\\xc4': 'A',\n    '\\xc5': 'A',\n    '\\xe0': 'a',\n    '\\xe1': 'a',\n    '\\xe2': 'a',\n    '\\xe3': 'a',\n    '\\xe4': 'a',\n    '\\xe5': 'a',\n    '\\xc7': 'C',\n    '\\xe7': 'c',\n    '\\xd0': 'D',\n    '\\xf0': 'd',\n    '\\xc8': 'E',\n    '\\xc9': 'E',\n    '\\xca': 'E',\n    '\\xcb': 'E',\n    '\\xe8': 'e',\n    '\\xe9': 'e',\n    '\\xea': 'e',\n    '\\xeb': 'e',\n    '\\xcc': 'I',\n    '\\xcd': 'I',\n    '\\xce': 'I',\n    '\\xcf': 'I',\n    '\\xec': 'i',\n    '\\xed': 'i',\n    '\\xee': 'i',\n    '\\xef': 'i',\n    '\\xd1': 'N',\n    '\\xf1': 'n',\n    '\\xd2': 'O',\n    '\\xd3': 'O',\n    '\\xd4': 'O',\n    '\\xd5': 'O',\n    '\\xd6': 'O',\n    '\\xd8': 'O',\n    '\\xf2': 'o',\n    '\\xf3': 'o',\n    '\\xf4': 'o',\n    '\\xf5': 'o',\n    '\\xf6': 'o',\n    '\\xf8': 'o',\n    '\\xd9': 'U',\n    '\\xda': 'U',\n    '\\xdb': 'U',\n    '\\xdc': 'U',\n    '\\xf9': 'u',\n    '\\xfa': 'u',\n    '\\xfb': 'u',\n    '\\xfc': 'u',\n    '\\xdd': 'Y',\n    '\\xfd': 'y',\n    '\\xff': 'y',\n    '\\xc6': 'Ae',\n    '\\xe6': 'ae',\n    '\\xde': 'Th',\n    '\\xfe': 'th',\n    '\\xdf': 'ss',\n    // Latin Extended-A block.\n    \"\\u0100\": 'A',\n    \"\\u0102\": 'A',\n    \"\\u0104\": 'A',\n    \"\\u0101\": 'a',\n    \"\\u0103\": 'a',\n    \"\\u0105\": 'a',\n    \"\\u0106\": 'C',\n    \"\\u0108\": 'C',\n    \"\\u010A\": 'C',\n    \"\\u010C\": 'C',\n    \"\\u0107\": 'c',\n    \"\\u0109\": 'c',\n    \"\\u010B\": 'c',\n    \"\\u010D\": 'c',\n    \"\\u010E\": 'D',\n    \"\\u0110\": 'D',\n    \"\\u010F\": 'd',\n    \"\\u0111\": 'd',\n    \"\\u0112\": 'E',\n    \"\\u0114\": 'E',\n    \"\\u0116\": 'E',\n    \"\\u0118\": 'E',\n    \"\\u011A\": 'E',\n    \"\\u0113\": 'e',\n    \"\\u0115\": 'e',\n    \"\\u0117\": 'e',\n    \"\\u0119\": 'e',\n    \"\\u011B\": 'e',\n    \"\\u011C\": 'G',\n    \"\\u011E\": 'G',\n    \"\\u0120\": 'G',\n    \"\\u0122\": 'G',\n    \"\\u011D\": 'g',\n    \"\\u011F\": 'g',\n    \"\\u0121\": 'g',\n    \"\\u0123\": 'g',\n    \"\\u0124\": 'H',\n    \"\\u0126\": 'H',\n    \"\\u0125\": 'h',\n    \"\\u0127\": 'h',\n    \"\\u0128\": 'I',\n    \"\\u012A\": 'I',\n    \"\\u012C\": 'I',\n    \"\\u012E\": 'I',\n    \"\\u0130\": 'I',\n    \"\\u0129\": 'i',\n    \"\\u012B\": 'i',\n    \"\\u012D\": 'i',\n    \"\\u012F\": 'i',\n    \"\\u0131\": 'i',\n    \"\\u0134\": 'J',\n    \"\\u0135\": 'j',\n    \"\\u0136\": 'K',\n    \"\\u0137\": 'k',\n    \"\\u0138\": 'k',\n    \"\\u0139\": 'L',\n    \"\\u013B\": 'L',\n    \"\\u013D\": 'L',\n    \"\\u013F\": 'L',\n    \"\\u0141\": 'L',\n    \"\\u013A\": 'l',\n    \"\\u013C\": 'l',\n    \"\\u013E\": 'l',\n    \"\\u0140\": 'l',\n    \"\\u0142\": 'l',\n    \"\\u0143\": 'N',\n    \"\\u0145\": 'N',\n    \"\\u0147\": 'N',\n    \"\\u014A\": 'N',\n    \"\\u0144\": 'n',\n    \"\\u0146\": 'n',\n    \"\\u0148\": 'n',\n    \"\\u014B\": 'n',\n    \"\\u014C\": 'O',\n    \"\\u014E\": 'O',\n    \"\\u0150\": 'O',\n    \"\\u014D\": 'o',\n    \"\\u014F\": 'o',\n    \"\\u0151\": 'o',\n    \"\\u0154\": 'R',\n    \"\\u0156\": 'R',\n    \"\\u0158\": 'R',\n    \"\\u0155\": 'r',\n    \"\\u0157\": 'r',\n    \"\\u0159\": 'r',\n    \"\\u015A\": 'S',\n    \"\\u015C\": 'S',\n    \"\\u015E\": 'S',\n    \"\\u0160\": 'S',\n    \"\\u015B\": 's',\n    \"\\u015D\": 's',\n    \"\\u015F\": 's',\n    \"\\u0161\": 's',\n    \"\\u0162\": 'T',\n    \"\\u0164\": 'T',\n    \"\\u0166\": 'T',\n    \"\\u0163\": 't',\n    \"\\u0165\": 't',\n    \"\\u0167\": 't',\n    \"\\u0168\": 'U',\n    \"\\u016A\": 'U',\n    \"\\u016C\": 'U',\n    \"\\u016E\": 'U',\n    \"\\u0170\": 'U',\n    \"\\u0172\": 'U',\n    \"\\u0169\": 'u',\n    \"\\u016B\": 'u',\n    \"\\u016D\": 'u',\n    \"\\u016F\": 'u',\n    \"\\u0171\": 'u',\n    \"\\u0173\": 'u',\n    \"\\u0174\": 'W',\n    \"\\u0175\": 'w',\n    \"\\u0176\": 'Y',\n    \"\\u0177\": 'y',\n    \"\\u0178\": 'Y',\n    \"\\u0179\": 'Z',\n    \"\\u017B\": 'Z',\n    \"\\u017D\": 'Z',\n    \"\\u017A\": 'z',\n    \"\\u017C\": 'z',\n    \"\\u017E\": 'z',\n    \"\\u0132\": 'IJ',\n    \"\\u0133\": 'ij',\n    \"\\u0152\": 'Oe',\n    \"\\u0153\": 'oe',\n    \"\\u0149\": \"'n\",\n    \"\\u017F\": 's'\n  };\n  /** Used to map characters to HTML entities. */\n\n  var htmlEscapes = {\n    '&': '&amp;',\n    '<': '&lt;',\n    '>': '&gt;',\n    '\"': '&quot;',\n    \"'\": '&#39;'\n  };\n  /** Used to map HTML entities to characters. */\n\n  var htmlUnescapes = {\n    '&amp;': '&',\n    '&lt;': '<',\n    '&gt;': '>',\n    '&quot;': '\"',\n    '&#39;': \"'\"\n  };\n  /** Used to escape characters for inclusion in compiled string literals. */\n\n  var stringEscapes = {\n    '\\\\': '\\\\',\n    \"'\": \"'\",\n    '\\n': 'n',\n    '\\r': 'r',\n    \"\\u2028\": 'u2028',\n    \"\\u2029\": 'u2029'\n  };\n  /** Built-in method references without a dependency on `root`. */\n\n  var freeParseFloat = parseFloat,\n      freeParseInt = parseInt;\n  /** Detect free variable `global` from Node.js. */\n\n  var freeGlobal = (typeof global === \"undefined\" ? \"undefined\" : _typeof(global)) == 'object' && global && global.Object === Object && global;\n  /** Detect free variable `self`. */\n\n  var freeSelf = (typeof self === \"undefined\" ? \"undefined\" : _typeof(self)) == 'object' && self && self.Object === Object && self;\n  /** Used as a reference to the global object. */\n\n  var root = freeGlobal || freeSelf || Function('return this')();\n  /** Detect free variable `exports`. */\n\n  var freeExports = (typeof exports === \"undefined\" ? \"undefined\" : _typeof(exports)) == 'object' && exports && !exports.nodeType && exports;\n  /** Detect free variable `module`. */\n\n  var freeModule = freeExports && (typeof module === \"undefined\" ? \"undefined\" : _typeof(module)) == 'object' && module && !module.nodeType && module;\n  /** Detect the popular CommonJS extension `module.exports`. */\n\n  var moduleExports = freeModule && freeModule.exports === freeExports;\n  /** Detect free variable `process` from Node.js. */\n\n  var freeProcess = moduleExports && freeGlobal.process;\n  /** Used to access faster Node.js helpers. */\n\n  var nodeUtil = function () {\n    try {\n      // Use `util.types` for Node.js 10+.\n      var types = freeModule && freeModule.require && freeModule.require('util').types;\n\n      if (types) {\n        return types;\n      } // Legacy `process.binding('util')` for Node.js < 10.\n\n\n      return freeProcess && freeProcess.binding && freeProcess.binding('util');\n    } catch (e) {}\n  }();\n  /* Node.js helper references. */\n\n\n  var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,\n      nodeIsDate = nodeUtil && nodeUtil.isDate,\n      nodeIsMap = nodeUtil && nodeUtil.isMap,\n      nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,\n      nodeIsSet = nodeUtil && nodeUtil.isSet,\n      nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;\n  /*--------------------------------------------------------------------------*/\n\n  /**\n   * A faster alternative to `Function#apply`, this function invokes `func`\n   * with the `this` binding of `thisArg` and the arguments of `args`.\n   *\n   * @private\n   * @param {Function} func The function to invoke.\n   * @param {*} thisArg The `this` binding of `func`.\n   * @param {Array} args The arguments to invoke `func` with.\n   * @returns {*} Returns the result of `func`.\n   */\n\n  function apply(func, thisArg, args) {\n    switch (args.length) {\n      case 0:\n        return func.call(thisArg);\n\n      case 1:\n        return func.call(thisArg, args[0]);\n\n      case 2:\n        return func.call(thisArg, args[0], args[1]);\n\n      case 3:\n        return func.call(thisArg, args[0], args[1], args[2]);\n    }\n\n    return func.apply(thisArg, args);\n  }\n  /**\n   * A specialized version of `baseAggregator` for arrays.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} setter The function to set `accumulator` values.\n   * @param {Function} iteratee The iteratee to transform keys.\n   * @param {Object} accumulator The initial aggregated object.\n   * @returns {Function} Returns `accumulator`.\n   */\n\n\n  function arrayAggregator(array, setter, iteratee, accumulator) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      var value = array[index];\n      setter(accumulator, value, iteratee(value), array);\n    }\n\n    return accumulator;\n  }\n  /**\n   * A specialized version of `_.forEach` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {Array} Returns `array`.\n   */\n\n\n  function arrayEach(array, iteratee) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      if (iteratee(array[index], index, array) === false) {\n        break;\n      }\n    }\n\n    return array;\n  }\n  /**\n   * A specialized version of `_.forEachRight` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {Array} Returns `array`.\n   */\n\n\n  function arrayEachRight(array, iteratee) {\n    var length = array == null ? 0 : array.length;\n\n    while (length--) {\n      if (iteratee(array[length], length, array) === false) {\n        break;\n      }\n    }\n\n    return array;\n  }\n  /**\n   * A specialized version of `_.every` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} predicate The function invoked per iteration.\n   * @returns {boolean} Returns `true` if all elements pass the predicate check,\n   *  else `false`.\n   */\n\n\n  function arrayEvery(array, predicate) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      if (!predicate(array[index], index, array)) {\n        return false;\n      }\n    }\n\n    return true;\n  }\n  /**\n   * A specialized version of `_.filter` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} predicate The function invoked per iteration.\n   * @returns {Array} Returns the new filtered array.\n   */\n\n\n  function arrayFilter(array, predicate) {\n    var index = -1,\n        length = array == null ? 0 : array.length,\n        resIndex = 0,\n        result = [];\n\n    while (++index < length) {\n      var value = array[index];\n\n      if (predicate(value, index, array)) {\n        result[resIndex++] = value;\n      }\n    }\n\n    return result;\n  }\n  /**\n   * A specialized version of `_.includes` for arrays without support for\n   * specifying an index to search from.\n   *\n   * @private\n   * @param {Array} [array] The array to inspect.\n   * @param {*} target The value to search for.\n   * @returns {boolean} Returns `true` if `target` is found, else `false`.\n   */\n\n\n  function arrayIncludes(array, value) {\n    var length = array == null ? 0 : array.length;\n    return !!length && baseIndexOf(array, value, 0) > -1;\n  }\n  /**\n   * This function is like `arrayIncludes` except that it accepts a comparator.\n   *\n   * @private\n   * @param {Array} [array] The array to inspect.\n   * @param {*} target The value to search for.\n   * @param {Function} comparator The comparator invoked per element.\n   * @returns {boolean} Returns `true` if `target` is found, else `false`.\n   */\n\n\n  function arrayIncludesWith(array, value, comparator) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      if (comparator(value, array[index])) {\n        return true;\n      }\n    }\n\n    return false;\n  }\n  /**\n   * A specialized version of `_.map` for arrays without support for iteratee\n   * shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {Array} Returns the new mapped array.\n   */\n\n\n  function arrayMap(array, iteratee) {\n    var index = -1,\n        length = array == null ? 0 : array.length,\n        result = Array(length);\n\n    while (++index < length) {\n      result[index] = iteratee(array[index], index, array);\n    }\n\n    return result;\n  }\n  /**\n   * Appends the elements of `values` to `array`.\n   *\n   * @private\n   * @param {Array} array The array to modify.\n   * @param {Array} values The values to append.\n   * @returns {Array} Returns `array`.\n   */\n\n\n  function arrayPush(array, values) {\n    var index = -1,\n        length = values.length,\n        offset = array.length;\n\n    while (++index < length) {\n      array[offset + index] = values[index];\n    }\n\n    return array;\n  }\n  /**\n   * A specialized version of `_.reduce` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @param {*} [accumulator] The initial value.\n   * @param {boolean} [initAccum] Specify using the first element of `array` as\n   *  the initial value.\n   * @returns {*} Returns the accumulated value.\n   */\n\n\n  function arrayReduce(array, iteratee, accumulator, initAccum) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    if (initAccum && length) {\n      accumulator = array[++index];\n    }\n\n    while (++index < length) {\n      accumulator = iteratee(accumulator, array[index], index, array);\n    }\n\n    return accumulator;\n  }\n  /**\n   * A specialized version of `_.reduceRight` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @param {*} [accumulator] The initial value.\n   * @param {boolean} [initAccum] Specify using the last element of `array` as\n   *  the initial value.\n   * @returns {*} Returns the accumulated value.\n   */\n\n\n  function arrayReduceRight(array, iteratee, accumulator, initAccum) {\n    var length = array == null ? 0 : array.length;\n\n    if (initAccum && length) {\n      accumulator = array[--length];\n    }\n\n    while (length--) {\n      accumulator = iteratee(accumulator, array[length], length, array);\n    }\n\n    return accumulator;\n  }\n  /**\n   * A specialized version of `_.some` for arrays without support for iteratee\n   * shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} predicate The function invoked per iteration.\n   * @returns {boolean} Returns `true` if any element passes the predicate check,\n   *  else `false`.\n   */\n\n\n  function arraySome(array, predicate) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      if (predicate(array[index], index, array)) {\n        return true;\n      }\n    }\n\n    return false;\n  }\n  /**\n   * Gets the size of an ASCII `string`.\n   *\n   * @private\n   * @param {string} string The string inspect.\n   * @returns {number} Returns the string size.\n   */\n\n\n  var asciiSize = baseProperty('length');\n  /**\n   * Converts an ASCII `string` to an array.\n   *\n   * @private\n   * @param {string} string The string to convert.\n   * @returns {Array} Returns the converted array.\n   */\n\n  function asciiToArray(string) {\n    return string.split('');\n  }\n  /**\n   * Splits an ASCII `string` into an array of its words.\n   *\n   * @private\n   * @param {string} The string to inspect.\n   * @returns {Array} Returns the words of `string`.\n   */\n\n\n  function asciiWords(string) {\n    return string.match(reAsciiWord) || [];\n  }\n  /**\n   * The base implementation of methods like `_.findKey` and `_.findLastKey`,\n   * without support for iteratee shorthands, which iterates over `collection`\n   * using `eachFunc`.\n   *\n   * @private\n   * @param {Array|Object} collection The collection to inspect.\n   * @param {Function} predicate The function invoked per iteration.\n   * @param {Function} eachFunc The function to iterate over `collection`.\n   * @returns {*} Returns the found element or its key, else `undefined`.\n   */\n\n\n  function baseFindKey(collection, predicate, eachFunc) {\n    var result;\n    eachFunc(collection, function (value, key, collection) {\n      if (predicate(value, key, collection)) {\n        result = key;\n        return false;\n      }\n    });\n    return result;\n  }\n  /**\n   * The base implementation of `_.findIndex` and `_.findLastIndex` without\n   * support for iteratee shorthands.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {Function} predicate The function invoked per iteration.\n   * @param {number} fromIndex The index to search from.\n   * @param {boolean} [fromRight] Specify iterating from right to left.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n\n\n  function baseFindIndex(array, predicate, fromIndex, fromRight) {\n    var length = array.length,\n        index = fromIndex + (fromRight ? 1 : -1);\n\n    while (fromRight ? index-- : ++index < length) {\n      if (predicate(array[index], index, array)) {\n        return index;\n      }\n    }\n\n    return -1;\n  }\n  /**\n   * The base implementation of `_.indexOf` without `fromIndex` bounds checks.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} value The value to search for.\n   * @param {number} fromIndex The index to search from.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n\n\n  function baseIndexOf(array, value, fromIndex) {\n    return value === value ? strictIndexOf(array, value, fromIndex) : baseFindIndex(array, baseIsNaN, fromIndex);\n  }\n  /**\n   * This function is like `baseIndexOf` except that it accepts a comparator.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} value The value to search for.\n   * @param {number} fromIndex The index to search from.\n   * @param {Function} comparator The comparator invoked per element.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n\n\n  function baseIndexOfWith(array, value, fromIndex, comparator) {\n    var index = fromIndex - 1,\n        length = array.length;\n\n    while (++index < length) {\n      if (comparator(array[index], value)) {\n        return index;\n      }\n    }\n\n    return -1;\n  }\n  /**\n   * The base implementation of `_.isNaN` without support for number objects.\n   *\n   * @private\n   * @param {*} value The value to check.\n   * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n   */\n\n\n  function baseIsNaN(value) {\n    return value !== value;\n  }\n  /**\n   * The base implementation of `_.mean` and `_.meanBy` without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} array The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {number} Returns the mean.\n   */\n\n\n  function baseMean(array, iteratee) {\n    var length = array == null ? 0 : array.length;\n    return length ? baseSum(array, iteratee) / length : NAN;\n  }\n  /**\n   * The base implementation of `_.property` without support for deep paths.\n   *\n   * @private\n   * @param {string} key The key of the property to get.\n   * @returns {Function} Returns the new accessor function.\n   */\n\n\n  function baseProperty(key) {\n    return function (object) {\n      return object == null ? undefined : object[key];\n    };\n  }\n  /**\n   * The base implementation of `_.propertyOf` without support for deep paths.\n   *\n   * @private\n   * @param {Object} object The object to query.\n   * @returns {Function} Returns the new accessor function.\n   */\n\n\n  function basePropertyOf(object) {\n    return function (key) {\n      return object == null ? undefined : object[key];\n    };\n  }\n  /**\n   * The base implementation of `_.reduce` and `_.reduceRight`, without support\n   * for iteratee shorthands, which iterates over `collection` using `eachFunc`.\n   *\n   * @private\n   * @param {Array|Object} collection The collection to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @param {*} accumulator The initial value.\n   * @param {boolean} initAccum Specify using the first or last element of\n   *  `collection` as the initial value.\n   * @param {Function} eachFunc The function to iterate over `collection`.\n   * @returns {*} Returns the accumulated value.\n   */\n\n\n  function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {\n    eachFunc(collection, function (value, index, collection) {\n      accumulator = initAccum ? (initAccum = false, value) : iteratee(accumulator, value, index, collection);\n    });\n    return accumulator;\n  }\n  /**\n   * The base implementation of `_.sortBy` which uses `comparer` to define the\n   * sort order of `array` and replaces criteria objects with their corresponding\n   * values.\n   *\n   * @private\n   * @param {Array} array The array to sort.\n   * @param {Function} comparer The function to define sort order.\n   * @returns {Array} Returns `array`.\n   */\n\n\n  function baseSortBy(array, comparer) {\n    var length = array.length;\n    array.sort(comparer);\n\n    while (length--) {\n      array[length] = array[length].value;\n    }\n\n    return array;\n  }\n  /**\n   * The base implementation of `_.sum` and `_.sumBy` without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} array The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {number} Returns the sum.\n   */\n\n\n  function baseSum(array, iteratee) {\n    var result,\n        index = -1,\n        length = array.length;\n\n    while (++index < length) {\n      var current = iteratee(array[index]);\n\n      if (current !== undefined) {\n        result = result === undefined ? current : result + current;\n      }\n    }\n\n    return result;\n  }\n  /**\n   * The base implementation of `_.times` without support for iteratee shorthands\n   * or max array length checks.\n   *\n   * @private\n   * @param {number} n The number of times to invoke `iteratee`.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {Array} Returns the array of results.\n   */\n\n\n  function baseTimes(n, iteratee) {\n    var index = -1,\n        result = Array(n);\n\n    while (++index < n) {\n      result[index] = iteratee(index);\n    }\n\n    return result;\n  }\n  /**\n   * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array\n   * of key-value pairs for `object` corresponding to the property names of `props`.\n   *\n   * @private\n   * @param {Object} object The object to query.\n   * @param {Array} props The property names to get values for.\n   * @returns {Object} Returns the key-value pairs.\n   */\n\n\n  function baseToPairs(object, props) {\n    return arrayMap(props, function (key) {\n      return [key, object[key]];\n    });\n  }\n  /**\n   * The base implementation of `_.trim`.\n   *\n   * @private\n   * @param {string} string The string to trim.\n   * @returns {string} Returns the trimmed string.\n   */\n\n\n  function baseTrim(string) {\n    return string ? string.slice(0, trimmedEndIndex(string) + 1).replace(reTrimStart, '') : string;\n  }\n  /**\n   * The base implementation of `_.unary` without support for storing metadata.\n   *\n   * @private\n   * @param {Function} func The function to cap arguments for.\n   * @returns {Function} Returns the new capped function.\n   */\n\n\n  function baseUnary(func) {\n    return function (value) {\n      return func(value);\n    };\n  }\n  /**\n   * The base implementation of `_.values` and `_.valuesIn` which creates an\n   * array of `object` property values corresponding to the property names\n   * of `props`.\n   *\n   * @private\n   * @param {Object} object The object to query.\n   * @param {Array} props The property names to get values for.\n   * @returns {Object} Returns the array of property values.\n   */\n\n\n  function baseValues(object, props) {\n    return arrayMap(props, function (key) {\n      return object[key];\n    });\n  }\n  /**\n   * Checks if a `cache` value for `key` exists.\n   *\n   * @private\n   * @param {Object} cache The cache to query.\n   * @param {string} key The key of the entry to check.\n   * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n   */\n\n\n  function cacheHas(cache, key) {\n    return cache.has(key);\n  }\n  /**\n   * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol\n   * that is not found in the character symbols.\n   *\n   * @private\n   * @param {Array} strSymbols The string symbols to inspect.\n   * @param {Array} chrSymbols The character symbols to find.\n   * @returns {number} Returns the index of the first unmatched string symbol.\n   */\n\n\n  function charsStartIndex(strSymbols, chrSymbols) {\n    var index = -1,\n        length = strSymbols.length;\n\n    while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n\n    return index;\n  }\n  /**\n   * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol\n   * that is not found in the character symbols.\n   *\n   * @private\n   * @param {Array} strSymbols The string symbols to inspect.\n   * @param {Array} chrSymbols The character symbols to find.\n   * @returns {number} Returns the index of the last unmatched string symbol.\n   */\n\n\n  function charsEndIndex(strSymbols, chrSymbols) {\n    var index = strSymbols.length;\n\n    while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n\n    return index;\n  }\n  /**\n   * Gets the number of `placeholder` occurrences in `array`.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} placeholder The placeholder to search for.\n   * @returns {number} Returns the placeholder count.\n   */\n\n\n  function countHolders(array, placeholder) {\n    var length = array.length,\n        result = 0;\n\n    while (length--) {\n      if (array[length] === placeholder) {\n        ++result;\n      }\n    }\n\n    return result;\n  }\n  /**\n   * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A\n   * letters to basic Latin letters.\n   *\n   * @private\n   * @param {string} letter The matched letter to deburr.\n   * @returns {string} Returns the deburred letter.\n   */\n\n\n  var deburrLetter = basePropertyOf(deburredLetters);\n  /**\n   * Used by `_.escape` to convert characters to HTML entities.\n   *\n   * @private\n   * @param {string} chr The matched character to escape.\n   * @returns {string} Returns the escaped character.\n   */\n\n  var escapeHtmlChar = basePropertyOf(htmlEscapes);\n  /**\n   * Used by `_.template` to escape characters for inclusion in compiled string literals.\n   *\n   * @private\n   * @param {string} chr The matched character to escape.\n   * @returns {string} Returns the escaped character.\n   */\n\n  function escapeStringChar(chr) {\n    return '\\\\' + stringEscapes[chr];\n  }\n  /**\n   * Gets the value at `key` of `object`.\n   *\n   * @private\n   * @param {Object} [object] The object to query.\n   * @param {string} key The key of the property to get.\n   * @returns {*} Returns the property value.\n   */\n\n\n  function getValue(object, key) {\n    return object == null ? undefined : object[key];\n  }\n  /**\n   * Checks if `string` contains Unicode symbols.\n   *\n   * @private\n   * @param {string} string The string to inspect.\n   * @returns {boolean} Returns `true` if a symbol is found, else `false`.\n   */\n\n\n  function hasUnicode(string) {\n    return reHasUnicode.test(string);\n  }\n  /**\n   * Checks if `string` contains a word composed of Unicode symbols.\n   *\n   * @private\n   * @param {string} string The string to inspect.\n   * @returns {boolean} Returns `true` if a word is found, else `false`.\n   */\n\n\n  function hasUnicodeWord(string) {\n    return reHasUnicodeWord.test(string);\n  }\n  /**\n   * Converts `iterator` to an array.\n   *\n   * @private\n   * @param {Object} iterator The iterator to convert.\n   * @returns {Array} Returns the converted array.\n   */\n\n\n  function iteratorToArray(iterator) {\n    var data,\n        result = [];\n\n    while (!(data = iterator.next()).done) {\n      result.push(data.value);\n    }\n\n    return result;\n  }\n  /**\n   * Converts `map` to its key-value pairs.\n   *\n   * @private\n   * @param {Object} map The map to convert.\n   * @returns {Array} Returns the key-value pairs.\n   */\n\n\n  function mapToArray(map) {\n    var index = -1,\n        result = Array(map.size);\n    map.forEach(function (value, key) {\n      result[++index] = [key, value];\n    });\n    return result;\n  }\n  /**\n   * Creates a unary function that invokes `func` with its argument transformed.\n   *\n   * @private\n   * @param {Function} func The function to wrap.\n   * @param {Function} transform The argument transform.\n   * @returns {Function} Returns the new function.\n   */\n\n\n  function overArg(func, transform) {\n    return function (arg) {\n      return func(transform(arg));\n    };\n  }\n  /**\n   * Replaces all `placeholder` elements in `array` with an internal placeholder\n   * and returns an array of their indexes.\n   *\n   * @private\n   * @param {Array} array The array to modify.\n   * @param {*} placeholder The placeholder to replace.\n   * @returns {Array} Returns the new array of placeholder indexes.\n   */\n\n\n  function replaceHolders(array, placeholder) {\n    var index = -1,\n        length = array.length,\n        resIndex = 0,\n        result = [];\n\n    while (++index < length) {\n      var value = array[index];\n\n      if (value === placeholder || value === PLACEHOLDER) {\n        array[index] = PLACEHOLDER;\n        result[resIndex++] = index;\n      }\n    }\n\n    return result;\n  }\n  /**\n   * Converts `set` to an array of its values.\n   *\n   * @private\n   * @param {Object} set The set to convert.\n   * @returns {Array} Returns the values.\n   */\n\n\n  function setToArray(set) {\n    var index = -1,\n        result = Array(set.size);\n    set.forEach(function (value) {\n      result[++index] = value;\n    });\n    return result;\n  }\n  /**\n   * Converts `set` to its value-value pairs.\n   *\n   * @private\n   * @param {Object} set The set to convert.\n   * @returns {Array} Returns the value-value pairs.\n   */\n\n\n  function setToPairs(set) {\n    var index = -1,\n        result = Array(set.size);\n    set.forEach(function (value) {\n      result[++index] = [value, value];\n    });\n    return result;\n  }\n  /**\n   * A specialized version of `_.indexOf` which performs strict equality\n   * comparisons of values, i.e. `===`.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} value The value to search for.\n   * @param {number} fromIndex The index to search from.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n\n\n  function strictIndexOf(array, value, fromIndex) {\n    var index = fromIndex - 1,\n        length = array.length;\n\n    while (++index < length) {\n      if (array[index] === value) {\n        return index;\n      }\n    }\n\n    return -1;\n  }\n  /**\n   * A specialized version of `_.lastIndexOf` which performs strict equality\n   * comparisons of values, i.e. `===`.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} value The value to search for.\n   * @param {number} fromIndex The index to search from.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n\n\n  function strictLastIndexOf(array, value, fromIndex) {\n    var index = fromIndex + 1;\n\n    while (index--) {\n      if (array[index] === value) {\n        return index;\n      }\n    }\n\n    return index;\n  }\n  /**\n   * Gets the number of symbols in `string`.\n   *\n   * @private\n   * @param {string} string The string to inspect.\n   * @returns {number} Returns the string size.\n   */\n\n\n  function stringSize(string) {\n    return hasUnicode(string) ? unicodeSize(string) : asciiSize(string);\n  }\n  /**\n   * Converts `string` to an array.\n   *\n   * @private\n   * @param {string} string The string to convert.\n   * @returns {Array} Returns the converted array.\n   */\n\n\n  function stringToArray(string) {\n    return hasUnicode(string) ? unicodeToArray(string) : asciiToArray(string);\n  }\n  /**\n   * Used by `_.trim` and `_.trimEnd` to get the index of the last non-whitespace\n   * character of `string`.\n   *\n   * @private\n   * @param {string} string The string to inspect.\n   * @returns {number} Returns the index of the last non-whitespace character.\n   */\n\n\n  function trimmedEndIndex(string) {\n    var index = string.length;\n\n    while (index-- && reWhitespace.test(string.charAt(index))) {}\n\n    return index;\n  }\n  /**\n   * Used by `_.unescape` to convert HTML entities to characters.\n   *\n   * @private\n   * @param {string} chr The matched character to unescape.\n   * @returns {string} Returns the unescaped character.\n   */\n\n\n  var unescapeHtmlChar = basePropertyOf(htmlUnescapes);\n  /**\n   * Gets the size of a Unicode `string`.\n   *\n   * @private\n   * @param {string} string The string inspect.\n   * @returns {number} Returns the string size.\n   */\n\n  function unicodeSize(string) {\n    var result = reUnicode.lastIndex = 0;\n\n    while (reUnicode.test(string)) {\n      ++result;\n    }\n\n    return result;\n  }\n  /**\n   * Converts a Unicode `string` to an array.\n   *\n   * @private\n   * @param {string} string The string to convert.\n   * @returns {Array} Returns the converted array.\n   */\n\n\n  function unicodeToArray(string) {\n    return string.match(reUnicode) || [];\n  }\n  /**\n   * Splits a Unicode `string` into an array of its words.\n   *\n   * @private\n   * @param {string} The string to inspect.\n   * @returns {Array} Returns the words of `string`.\n   */\n\n\n  function unicodeWords(string) {\n    return string.match(reUnicodeWord) || [];\n  }\n  /*--------------------------------------------------------------------------*/\n\n  /**\n   * Create a new pristine `lodash` function using the `context` object.\n   *\n   * @static\n   * @memberOf _\n   * @since 1.1.0\n   * @category Util\n   * @param {Object} [context=root] The context object.\n   * @returns {Function} Returns a new `lodash` function.\n   * @example\n   *\n   * _.mixin({ 'foo': _.constant('foo') });\n   *\n   * var lodash = _.runInContext();\n   * lodash.mixin({ 'bar': lodash.constant('bar') });\n   *\n   * _.isFunction(_.foo);\n   * // => true\n   * _.isFunction(_.bar);\n   * // => false\n   *\n   * lodash.isFunction(lodash.foo);\n   * // => false\n   * lodash.isFunction(lodash.bar);\n   * // => true\n   *\n   * // Create a suped-up `defer` in Node.js.\n   * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;\n   */\n\n\n  var runInContext = function runInContext(context) {\n    context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));\n    /** Built-in constructor references. */\n\n    var Array = context.Array,\n        Date = context.Date,\n        Error = context.Error,\n        Function = context.Function,\n        Math = context.Math,\n        Object = context.Object,\n        RegExp = context.RegExp,\n        String = context.String,\n        TypeError = context.TypeError;\n    /** Used for built-in method references. */\n\n    var arrayProto = Array.prototype,\n        funcProto = Function.prototype,\n        objectProto = Object.prototype;\n    /** Used to detect overreaching core-js shims. */\n\n    var coreJsData = context['__core-js_shared__'];\n    /** Used to resolve the decompiled source of functions. */\n\n    var funcToString = funcProto.toString;\n    /** Used to check objects for own properties. */\n\n    var hasOwnProperty = objectProto.hasOwnProperty;\n    /** Used to generate unique IDs. */\n\n    var idCounter = 0;\n    /** Used to detect methods masquerading as native. */\n\n    var maskSrcKey = function () {\n      var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');\n      return uid ? 'Symbol(src)_1.' + uid : '';\n    }();\n    /**\n     * Used to resolve the\n     * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n     * of values.\n     */\n\n\n    var nativeObjectToString = objectProto.toString;\n    /** Used to infer the `Object` constructor. */\n\n    var objectCtorString = funcToString.call(Object);\n    /** Used to restore the original `_` reference in `_.noConflict`. */\n\n    var oldDash = root._;\n    /** Used to detect if a method is native. */\n\n    var reIsNative = RegExp('^' + funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&').replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$');\n    /** Built-in value references. */\n\n    var Buffer = moduleExports ? context.Buffer : undefined,\n        _Symbol = context.Symbol,\n        Uint8Array = context.Uint8Array,\n        allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,\n        getPrototype = overArg(Object.getPrototypeOf, Object),\n        objectCreate = Object.create,\n        propertyIsEnumerable = objectProto.propertyIsEnumerable,\n        splice = arrayProto.splice,\n        spreadableSymbol = _Symbol ? _Symbol.isConcatSpreadable : undefined,\n        symIterator = _Symbol ? _Symbol.iterator : undefined,\n        symToStringTag = _Symbol ? _Symbol.toStringTag : undefined;\n\n    var defineProperty = function () {\n      try {\n        var func = getNative(Object, 'defineProperty');\n        func({}, '', {});\n        return func;\n      } catch (e) {}\n    }();\n    /** Mocked built-ins. */\n\n\n    var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,\n        ctxNow = Date && Date.now !== root.Date.now && Date.now,\n        ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;\n    /* Built-in method references for those with the same name as other `lodash` methods. */\n\n    var nativeCeil = Math.ceil,\n        nativeFloor = Math.floor,\n        nativeGetSymbols = Object.getOwnPropertySymbols,\n        nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,\n        nativeIsFinite = context.isFinite,\n        nativeJoin = arrayProto.join,\n        nativeKeys = overArg(Object.keys, Object),\n        nativeMax = Math.max,\n        nativeMin = Math.min,\n        nativeNow = Date.now,\n        nativeParseInt = context.parseInt,\n        nativeRandom = Math.random,\n        nativeReverse = arrayProto.reverse;\n    /* Built-in method references that are verified to be native. */\n\n    var DataView = getNative(context, 'DataView'),\n        Map = getNative(context, 'Map'),\n        Promise = getNative(context, 'Promise'),\n        Set = getNative(context, 'Set'),\n        WeakMap = getNative(context, 'WeakMap'),\n        nativeCreate = getNative(Object, 'create');\n    /** Used to store function metadata. */\n\n    var metaMap = WeakMap && new WeakMap();\n    /** Used to lookup unminified function names. */\n\n    var realNames = {};\n    /** Used to detect maps, sets, and weakmaps. */\n\n    var dataViewCtorString = toSource(DataView),\n        mapCtorString = toSource(Map),\n        promiseCtorString = toSource(Promise),\n        setCtorString = toSource(Set),\n        weakMapCtorString = toSource(WeakMap);\n    /** Used to convert symbols to primitives and strings. */\n\n    var symbolProto = _Symbol ? _Symbol.prototype : undefined,\n        symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,\n        symbolToString = symbolProto ? symbolProto.toString : undefined;\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a `lodash` object which wraps `value` to enable implicit method\n     * chain sequences. Methods that operate on and return arrays, collections,\n     * and functions can be chained together. Methods that retrieve a single value\n     * or may return a primitive value will automatically end the chain sequence\n     * and return the unwrapped value. Otherwise, the value must be unwrapped\n     * with `_#value`.\n     *\n     * Explicit chain sequences, which must be unwrapped with `_#value`, may be\n     * enabled using `_.chain`.\n     *\n     * The execution of chained methods is lazy, that is, it's deferred until\n     * `_#value` is implicitly or explicitly called.\n     *\n     * Lazy evaluation allows several methods to support shortcut fusion.\n     * Shortcut fusion is an optimization to merge iteratee calls; this avoids\n     * the creation of intermediate arrays and can greatly reduce the number of\n     * iteratee executions. Sections of a chain sequence qualify for shortcut\n     * fusion if the section is applied to an array and iteratees accept only\n     * one argument. The heuristic for whether a section qualifies for shortcut\n     * fusion is subject to change.\n     *\n     * Chaining is supported in custom builds as long as the `_#value` method is\n     * directly or indirectly included in the build.\n     *\n     * In addition to lodash methods, wrappers have `Array` and `String` methods.\n     *\n     * The wrapper `Array` methods are:\n     * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`\n     *\n     * The wrapper `String` methods are:\n     * `replace` and `split`\n     *\n     * The wrapper methods that support shortcut fusion are:\n     * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,\n     * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,\n     * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`\n     *\n     * The chainable wrapper methods are:\n     * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,\n     * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,\n     * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,\n     * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,\n     * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,\n     * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,\n     * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,\n     * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,\n     * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,\n     * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,\n     * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,\n     * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,\n     * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,\n     * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,\n     * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,\n     * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,\n     * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,\n     * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,\n     * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,\n     * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,\n     * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,\n     * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,\n     * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,\n     * `zipObject`, `zipObjectDeep`, and `zipWith`\n     *\n     * The wrapper methods that are **not** chainable by default are:\n     * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,\n     * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,\n     * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,\n     * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,\n     * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,\n     * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,\n     * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,\n     * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,\n     * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,\n     * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,\n     * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,\n     * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,\n     * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,\n     * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,\n     * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,\n     * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,\n     * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,\n     * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,\n     * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,\n     * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,\n     * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,\n     * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,\n     * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,\n     * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,\n     * `upperFirst`, `value`, and `words`\n     *\n     * @name _\n     * @constructor\n     * @category Seq\n     * @param {*} value The value to wrap in a `lodash` instance.\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var wrapped = _([1, 2, 3]);\n     *\n     * // Returns an unwrapped value.\n     * wrapped.reduce(_.add);\n     * // => 6\n     *\n     * // Returns a wrapped value.\n     * var squares = wrapped.map(square);\n     *\n     * _.isArray(squares);\n     * // => false\n     *\n     * _.isArray(squares.value());\n     * // => true\n     */\n\n    function lodash(value) {\n      if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {\n        if (value instanceof LodashWrapper) {\n          return value;\n        }\n\n        if (hasOwnProperty.call(value, '__wrapped__')) {\n          return wrapperClone(value);\n        }\n      }\n\n      return new LodashWrapper(value);\n    }\n    /**\n     * The base implementation of `_.create` without support for assigning\n     * properties to the created object.\n     *\n     * @private\n     * @param {Object} proto The object to inherit from.\n     * @returns {Object} Returns the new object.\n     */\n\n\n    var baseCreate = function () {\n      function object() {}\n\n      return function (proto) {\n        if (!isObject(proto)) {\n          return {};\n        }\n\n        if (objectCreate) {\n          return objectCreate(proto);\n        }\n\n        object.prototype = proto;\n        var result = new object();\n        object.prototype = undefined;\n        return result;\n      };\n    }();\n    /**\n     * The function whose prototype chain sequence wrappers inherit from.\n     *\n     * @private\n     */\n\n\n    function baseLodash() {// No operation performed.\n    }\n    /**\n     * The base constructor for creating `lodash` wrapper objects.\n     *\n     * @private\n     * @param {*} value The value to wrap.\n     * @param {boolean} [chainAll] Enable explicit method chain sequences.\n     */\n\n\n    function LodashWrapper(value, chainAll) {\n      this.__wrapped__ = value;\n      this.__actions__ = [];\n      this.__chain__ = !!chainAll;\n      this.__index__ = 0;\n      this.__values__ = undefined;\n    }\n    /**\n     * By default, the template delimiters used by lodash are like those in\n     * embedded Ruby (ERB) as well as ES2015 template strings. Change the\n     * following template settings to use alternative delimiters.\n     *\n     * @static\n     * @memberOf _\n     * @type {Object}\n     */\n\n\n    lodash.templateSettings = {\n      /**\n       * Used to detect `data` property values to be HTML-escaped.\n       *\n       * @memberOf _.templateSettings\n       * @type {RegExp}\n       */\n      'escape': reEscape,\n\n      /**\n       * Used to detect code to be evaluated.\n       *\n       * @memberOf _.templateSettings\n       * @type {RegExp}\n       */\n      'evaluate': reEvaluate,\n\n      /**\n       * Used to detect `data` property values to inject.\n       *\n       * @memberOf _.templateSettings\n       * @type {RegExp}\n       */\n      'interpolate': reInterpolate,\n\n      /**\n       * Used to reference the data object in the template text.\n       *\n       * @memberOf _.templateSettings\n       * @type {string}\n       */\n      'variable': '',\n\n      /**\n       * Used to import variables into the compiled template.\n       *\n       * @memberOf _.templateSettings\n       * @type {Object}\n       */\n      'imports': {\n        /**\n         * A reference to the `lodash` function.\n         *\n         * @memberOf _.templateSettings.imports\n         * @type {Function}\n         */\n        '_': lodash\n      }\n    }; // Ensure wrappers are instances of `baseLodash`.\n\n    lodash.prototype = baseLodash.prototype;\n    lodash.prototype.constructor = lodash;\n    LodashWrapper.prototype = baseCreate(baseLodash.prototype);\n    LodashWrapper.prototype.constructor = LodashWrapper;\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.\n     *\n     * @private\n     * @constructor\n     * @param {*} value The value to wrap.\n     */\n\n    function LazyWrapper(value) {\n      this.__wrapped__ = value;\n      this.__actions__ = [];\n      this.__dir__ = 1;\n      this.__filtered__ = false;\n      this.__iteratees__ = [];\n      this.__takeCount__ = MAX_ARRAY_LENGTH;\n      this.__views__ = [];\n    }\n    /**\n     * Creates a clone of the lazy wrapper object.\n     *\n     * @private\n     * @name clone\n     * @memberOf LazyWrapper\n     * @returns {Object} Returns the cloned `LazyWrapper` object.\n     */\n\n\n    function lazyClone() {\n      var result = new LazyWrapper(this.__wrapped__);\n      result.__actions__ = copyArray(this.__actions__);\n      result.__dir__ = this.__dir__;\n      result.__filtered__ = this.__filtered__;\n      result.__iteratees__ = copyArray(this.__iteratees__);\n      result.__takeCount__ = this.__takeCount__;\n      result.__views__ = copyArray(this.__views__);\n      return result;\n    }\n    /**\n     * Reverses the direction of lazy iteration.\n     *\n     * @private\n     * @name reverse\n     * @memberOf LazyWrapper\n     * @returns {Object} Returns the new reversed `LazyWrapper` object.\n     */\n\n\n    function lazyReverse() {\n      if (this.__filtered__) {\n        var result = new LazyWrapper(this);\n        result.__dir__ = -1;\n        result.__filtered__ = true;\n      } else {\n        result = this.clone();\n        result.__dir__ *= -1;\n      }\n\n      return result;\n    }\n    /**\n     * Extracts the unwrapped value from its lazy wrapper.\n     *\n     * @private\n     * @name value\n     * @memberOf LazyWrapper\n     * @returns {*} Returns the unwrapped value.\n     */\n\n\n    function lazyValue() {\n      var array = this.__wrapped__.value(),\n          dir = this.__dir__,\n          isArr = isArray(array),\n          isRight = dir < 0,\n          arrLength = isArr ? array.length : 0,\n          view = getView(0, arrLength, this.__views__),\n          start = view.start,\n          end = view.end,\n          length = end - start,\n          index = isRight ? end : start - 1,\n          iteratees = this.__iteratees__,\n          iterLength = iteratees.length,\n          resIndex = 0,\n          takeCount = nativeMin(length, this.__takeCount__);\n\n      if (!isArr || !isRight && arrLength == length && takeCount == length) {\n        return baseWrapperValue(array, this.__actions__);\n      }\n\n      var result = [];\n\n      outer: while (length-- && resIndex < takeCount) {\n        index += dir;\n        var iterIndex = -1,\n            value = array[index];\n\n        while (++iterIndex < iterLength) {\n          var data = iteratees[iterIndex],\n              iteratee = data.iteratee,\n              type = data.type,\n              computed = iteratee(value);\n\n          if (type == LAZY_MAP_FLAG) {\n            value = computed;\n          } else if (!computed) {\n            if (type == LAZY_FILTER_FLAG) {\n              continue outer;\n            } else {\n              break outer;\n            }\n          }\n        }\n\n        result[resIndex++] = value;\n      }\n\n      return result;\n    } // Ensure `LazyWrapper` is an instance of `baseLodash`.\n\n\n    LazyWrapper.prototype = baseCreate(baseLodash.prototype);\n    LazyWrapper.prototype.constructor = LazyWrapper;\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a hash object.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [entries] The key-value pairs to cache.\n     */\n\n    function Hash(entries) {\n      var index = -1,\n          length = entries == null ? 0 : entries.length;\n      this.clear();\n\n      while (++index < length) {\n        var entry = entries[index];\n        this.set(entry[0], entry[1]);\n      }\n    }\n    /**\n     * Removes all key-value entries from the hash.\n     *\n     * @private\n     * @name clear\n     * @memberOf Hash\n     */\n\n\n    function hashClear() {\n      this.__data__ = nativeCreate ? nativeCreate(null) : {};\n      this.size = 0;\n    }\n    /**\n     * Removes `key` and its value from the hash.\n     *\n     * @private\n     * @name delete\n     * @memberOf Hash\n     * @param {Object} hash The hash to modify.\n     * @param {string} key The key of the value to remove.\n     * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n     */\n\n\n    function hashDelete(key) {\n      var result = this.has(key) && delete this.__data__[key];\n      this.size -= result ? 1 : 0;\n      return result;\n    }\n    /**\n     * Gets the hash value for `key`.\n     *\n     * @private\n     * @name get\n     * @memberOf Hash\n     * @param {string} key The key of the value to get.\n     * @returns {*} Returns the entry value.\n     */\n\n\n    function hashGet(key) {\n      var data = this.__data__;\n\n      if (nativeCreate) {\n        var result = data[key];\n        return result === HASH_UNDEFINED ? undefined : result;\n      }\n\n      return hasOwnProperty.call(data, key) ? data[key] : undefined;\n    }\n    /**\n     * Checks if a hash value for `key` exists.\n     *\n     * @private\n     * @name has\n     * @memberOf Hash\n     * @param {string} key The key of the entry to check.\n     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n     */\n\n\n    function hashHas(key) {\n      var data = this.__data__;\n      return nativeCreate ? data[key] !== undefined : hasOwnProperty.call(data, key);\n    }\n    /**\n     * Sets the hash `key` to `value`.\n     *\n     * @private\n     * @name set\n     * @memberOf Hash\n     * @param {string} key The key of the value to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns the hash instance.\n     */\n\n\n    function hashSet(key, value) {\n      var data = this.__data__;\n      this.size += this.has(key) ? 0 : 1;\n      data[key] = nativeCreate && value === undefined ? HASH_UNDEFINED : value;\n      return this;\n    } // Add methods to `Hash`.\n\n\n    Hash.prototype.clear = hashClear;\n    Hash.prototype['delete'] = hashDelete;\n    Hash.prototype.get = hashGet;\n    Hash.prototype.has = hashHas;\n    Hash.prototype.set = hashSet;\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates an list cache object.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [entries] The key-value pairs to cache.\n     */\n\n    function ListCache(entries) {\n      var index = -1,\n          length = entries == null ? 0 : entries.length;\n      this.clear();\n\n      while (++index < length) {\n        var entry = entries[index];\n        this.set(entry[0], entry[1]);\n      }\n    }\n    /**\n     * Removes all key-value entries from the list cache.\n     *\n     * @private\n     * @name clear\n     * @memberOf ListCache\n     */\n\n\n    function listCacheClear() {\n      this.__data__ = [];\n      this.size = 0;\n    }\n    /**\n     * Removes `key` and its value from the list cache.\n     *\n     * @private\n     * @name delete\n     * @memberOf ListCache\n     * @param {string} key The key of the value to remove.\n     * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n     */\n\n\n    function listCacheDelete(key) {\n      var data = this.__data__,\n          index = assocIndexOf(data, key);\n\n      if (index < 0) {\n        return false;\n      }\n\n      var lastIndex = data.length - 1;\n\n      if (index == lastIndex) {\n        data.pop();\n      } else {\n        splice.call(data, index, 1);\n      }\n\n      --this.size;\n      return true;\n    }\n    /**\n     * Gets the list cache value for `key`.\n     *\n     * @private\n     * @name get\n     * @memberOf ListCache\n     * @param {string} key The key of the value to get.\n     * @returns {*} Returns the entry value.\n     */\n\n\n    function listCacheGet(key) {\n      var data = this.__data__,\n          index = assocIndexOf(data, key);\n      return index < 0 ? undefined : data[index][1];\n    }\n    /**\n     * Checks if a list cache value for `key` exists.\n     *\n     * @private\n     * @name has\n     * @memberOf ListCache\n     * @param {string} key The key of the entry to check.\n     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n     */\n\n\n    function listCacheHas(key) {\n      return assocIndexOf(this.__data__, key) > -1;\n    }\n    /**\n     * Sets the list cache `key` to `value`.\n     *\n     * @private\n     * @name set\n     * @memberOf ListCache\n     * @param {string} key The key of the value to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns the list cache instance.\n     */\n\n\n    function listCacheSet(key, value) {\n      var data = this.__data__,\n          index = assocIndexOf(data, key);\n\n      if (index < 0) {\n        ++this.size;\n        data.push([key, value]);\n      } else {\n        data[index][1] = value;\n      }\n\n      return this;\n    } // Add methods to `ListCache`.\n\n\n    ListCache.prototype.clear = listCacheClear;\n    ListCache.prototype['delete'] = listCacheDelete;\n    ListCache.prototype.get = listCacheGet;\n    ListCache.prototype.has = listCacheHas;\n    ListCache.prototype.set = listCacheSet;\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a map cache object to store key-value pairs.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [entries] The key-value pairs to cache.\n     */\n\n    function MapCache(entries) {\n      var index = -1,\n          length = entries == null ? 0 : entries.length;\n      this.clear();\n\n      while (++index < length) {\n        var entry = entries[index];\n        this.set(entry[0], entry[1]);\n      }\n    }\n    /**\n     * Removes all key-value entries from the map.\n     *\n     * @private\n     * @name clear\n     * @memberOf MapCache\n     */\n\n\n    function mapCacheClear() {\n      this.size = 0;\n      this.__data__ = {\n        'hash': new Hash(),\n        'map': new (Map || ListCache)(),\n        'string': new Hash()\n      };\n    }\n    /**\n     * Removes `key` and its value from the map.\n     *\n     * @private\n     * @name delete\n     * @memberOf MapCache\n     * @param {string} key The key of the value to remove.\n     * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n     */\n\n\n    function mapCacheDelete(key) {\n      var result = getMapData(this, key)['delete'](key);\n      this.size -= result ? 1 : 0;\n      return result;\n    }\n    /**\n     * Gets the map value for `key`.\n     *\n     * @private\n     * @name get\n     * @memberOf MapCache\n     * @param {string} key The key of the value to get.\n     * @returns {*} Returns the entry value.\n     */\n\n\n    function mapCacheGet(key) {\n      return getMapData(this, key).get(key);\n    }\n    /**\n     * Checks if a map value for `key` exists.\n     *\n     * @private\n     * @name has\n     * @memberOf MapCache\n     * @param {string} key The key of the entry to check.\n     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n     */\n\n\n    function mapCacheHas(key) {\n      return getMapData(this, key).has(key);\n    }\n    /**\n     * Sets the map `key` to `value`.\n     *\n     * @private\n     * @name set\n     * @memberOf MapCache\n     * @param {string} key The key of the value to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns the map cache instance.\n     */\n\n\n    function mapCacheSet(key, value) {\n      var data = getMapData(this, key),\n          size = data.size;\n      data.set(key, value);\n      this.size += data.size == size ? 0 : 1;\n      return this;\n    } // Add methods to `MapCache`.\n\n\n    MapCache.prototype.clear = mapCacheClear;\n    MapCache.prototype['delete'] = mapCacheDelete;\n    MapCache.prototype.get = mapCacheGet;\n    MapCache.prototype.has = mapCacheHas;\n    MapCache.prototype.set = mapCacheSet;\n    /*------------------------------------------------------------------------*/\n\n    /**\n     *\n     * Creates an array cache object to store unique values.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [values] The values to cache.\n     */\n\n    function SetCache(values) {\n      var index = -1,\n          length = values == null ? 0 : values.length;\n      this.__data__ = new MapCache();\n\n      while (++index < length) {\n        this.add(values[index]);\n      }\n    }\n    /**\n     * Adds `value` to the array cache.\n     *\n     * @private\n     * @name add\n     * @memberOf SetCache\n     * @alias push\n     * @param {*} value The value to cache.\n     * @returns {Object} Returns the cache instance.\n     */\n\n\n    function setCacheAdd(value) {\n      this.__data__.set(value, HASH_UNDEFINED);\n\n      return this;\n    }\n    /**\n     * Checks if `value` is in the array cache.\n     *\n     * @private\n     * @name has\n     * @memberOf SetCache\n     * @param {*} value The value to search for.\n     * @returns {number} Returns `true` if `value` is found, else `false`.\n     */\n\n\n    function setCacheHas(value) {\n      return this.__data__.has(value);\n    } // Add methods to `SetCache`.\n\n\n    SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;\n    SetCache.prototype.has = setCacheHas;\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a stack cache object to store key-value pairs.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [entries] The key-value pairs to cache.\n     */\n\n    function Stack(entries) {\n      var data = this.__data__ = new ListCache(entries);\n      this.size = data.size;\n    }\n    /**\n     * Removes all key-value entries from the stack.\n     *\n     * @private\n     * @name clear\n     * @memberOf Stack\n     */\n\n\n    function stackClear() {\n      this.__data__ = new ListCache();\n      this.size = 0;\n    }\n    /**\n     * Removes `key` and its value from the stack.\n     *\n     * @private\n     * @name delete\n     * @memberOf Stack\n     * @param {string} key The key of the value to remove.\n     * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n     */\n\n\n    function stackDelete(key) {\n      var data = this.__data__,\n          result = data['delete'](key);\n      this.size = data.size;\n      return result;\n    }\n    /**\n     * Gets the stack value for `key`.\n     *\n     * @private\n     * @name get\n     * @memberOf Stack\n     * @param {string} key The key of the value to get.\n     * @returns {*} Returns the entry value.\n     */\n\n\n    function stackGet(key) {\n      return this.__data__.get(key);\n    }\n    /**\n     * Checks if a stack value for `key` exists.\n     *\n     * @private\n     * @name has\n     * @memberOf Stack\n     * @param {string} key The key of the entry to check.\n     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n     */\n\n\n    function stackHas(key) {\n      return this.__data__.has(key);\n    }\n    /**\n     * Sets the stack `key` to `value`.\n     *\n     * @private\n     * @name set\n     * @memberOf Stack\n     * @param {string} key The key of the value to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns the stack cache instance.\n     */\n\n\n    function stackSet(key, value) {\n      var data = this.__data__;\n\n      if (data instanceof ListCache) {\n        var pairs = data.__data__;\n\n        if (!Map || pairs.length < LARGE_ARRAY_SIZE - 1) {\n          pairs.push([key, value]);\n          this.size = ++data.size;\n          return this;\n        }\n\n        data = this.__data__ = new MapCache(pairs);\n      }\n\n      data.set(key, value);\n      this.size = data.size;\n      return this;\n    } // Add methods to `Stack`.\n\n\n    Stack.prototype.clear = stackClear;\n    Stack.prototype['delete'] = stackDelete;\n    Stack.prototype.get = stackGet;\n    Stack.prototype.has = stackHas;\n    Stack.prototype.set = stackSet;\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates an array of the enumerable property names of the array-like `value`.\n     *\n     * @private\n     * @param {*} value The value to query.\n     * @param {boolean} inherited Specify returning inherited property names.\n     * @returns {Array} Returns the array of property names.\n     */\n\n    function arrayLikeKeys(value, inherited) {\n      var isArr = isArray(value),\n          isArg = !isArr && isArguments(value),\n          isBuff = !isArr && !isArg && isBuffer(value),\n          isType = !isArr && !isArg && !isBuff && isTypedArray(value),\n          skipIndexes = isArr || isArg || isBuff || isType,\n          result = skipIndexes ? baseTimes(value.length, String) : [],\n          length = result.length;\n\n      for (var key in value) {\n        if ((inherited || hasOwnProperty.call(value, key)) && !(skipIndexes && ( // Safari 9 has enumerable `arguments.length` in strict mode.\n        key == 'length' || // Node.js 0.10 has enumerable non-index properties on buffers.\n        isBuff && (key == 'offset' || key == 'parent') || // PhantomJS 2 has enumerable non-index properties on typed arrays.\n        isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset') || // Skip index properties.\n        isIndex(key, length)))) {\n          result.push(key);\n        }\n      }\n\n      return result;\n    }\n    /**\n     * A specialized version of `_.sample` for arrays.\n     *\n     * @private\n     * @param {Array} array The array to sample.\n     * @returns {*} Returns the random element.\n     */\n\n\n    function arraySample(array) {\n      var length = array.length;\n      return length ? array[baseRandom(0, length - 1)] : undefined;\n    }\n    /**\n     * A specialized version of `_.sampleSize` for arrays.\n     *\n     * @private\n     * @param {Array} array The array to sample.\n     * @param {number} n The number of elements to sample.\n     * @returns {Array} Returns the random elements.\n     */\n\n\n    function arraySampleSize(array, n) {\n      return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));\n    }\n    /**\n     * A specialized version of `_.shuffle` for arrays.\n     *\n     * @private\n     * @param {Array} array The array to shuffle.\n     * @returns {Array} Returns the new shuffled array.\n     */\n\n\n    function arrayShuffle(array) {\n      return shuffleSelf(copyArray(array));\n    }\n    /**\n     * This function is like `assignValue` except that it doesn't assign\n     * `undefined` values.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {string} key The key of the property to assign.\n     * @param {*} value The value to assign.\n     */\n\n\n    function assignMergeValue(object, key, value) {\n      if (value !== undefined && !eq(object[key], value) || value === undefined && !(key in object)) {\n        baseAssignValue(object, key, value);\n      }\n    }\n    /**\n     * Assigns `value` to `key` of `object` if the existing value is not equivalent\n     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {string} key The key of the property to assign.\n     * @param {*} value The value to assign.\n     */\n\n\n    function assignValue(object, key, value) {\n      var objValue = object[key];\n\n      if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) || value === undefined && !(key in object)) {\n        baseAssignValue(object, key, value);\n      }\n    }\n    /**\n     * Gets the index at which the `key` is found in `array` of key-value pairs.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {*} key The key to search for.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     */\n\n\n    function assocIndexOf(array, key) {\n      var length = array.length;\n\n      while (length--) {\n        if (eq(array[length][0], key)) {\n          return length;\n        }\n      }\n\n      return -1;\n    }\n    /**\n     * Aggregates elements of `collection` on `accumulator` with keys transformed\n     * by `iteratee` and values set by `setter`.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} setter The function to set `accumulator` values.\n     * @param {Function} iteratee The iteratee to transform keys.\n     * @param {Object} accumulator The initial aggregated object.\n     * @returns {Function} Returns `accumulator`.\n     */\n\n\n    function baseAggregator(collection, setter, iteratee, accumulator) {\n      baseEach(collection, function (value, key, collection) {\n        setter(accumulator, value, iteratee(value), collection);\n      });\n      return accumulator;\n    }\n    /**\n     * The base implementation of `_.assign` without support for multiple sources\n     * or `customizer` functions.\n     *\n     * @private\n     * @param {Object} object The destination object.\n     * @param {Object} source The source object.\n     * @returns {Object} Returns `object`.\n     */\n\n\n    function baseAssign(object, source) {\n      return object && copyObject(source, keys(source), object);\n    }\n    /**\n     * The base implementation of `_.assignIn` without support for multiple sources\n     * or `customizer` functions.\n     *\n     * @private\n     * @param {Object} object The destination object.\n     * @param {Object} source The source object.\n     * @returns {Object} Returns `object`.\n     */\n\n\n    function baseAssignIn(object, source) {\n      return object && copyObject(source, keysIn(source), object);\n    }\n    /**\n     * The base implementation of `assignValue` and `assignMergeValue` without\n     * value checks.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {string} key The key of the property to assign.\n     * @param {*} value The value to assign.\n     */\n\n\n    function baseAssignValue(object, key, value) {\n      if (key == '__proto__' && defineProperty) {\n        defineProperty(object, key, {\n          'configurable': true,\n          'enumerable': true,\n          'value': value,\n          'writable': true\n        });\n      } else {\n        object[key] = value;\n      }\n    }\n    /**\n     * The base implementation of `_.at` without support for individual paths.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {string[]} paths The property paths to pick.\n     * @returns {Array} Returns the picked elements.\n     */\n\n\n    function baseAt(object, paths) {\n      var index = -1,\n          length = paths.length,\n          result = Array(length),\n          skip = object == null;\n\n      while (++index < length) {\n        result[index] = skip ? undefined : get(object, paths[index]);\n      }\n\n      return result;\n    }\n    /**\n     * The base implementation of `_.clamp` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {number} number The number to clamp.\n     * @param {number} [lower] The lower bound.\n     * @param {number} upper The upper bound.\n     * @returns {number} Returns the clamped number.\n     */\n\n\n    function baseClamp(number, lower, upper) {\n      if (number === number) {\n        if (upper !== undefined) {\n          number = number <= upper ? number : upper;\n        }\n\n        if (lower !== undefined) {\n          number = number >= lower ? number : lower;\n        }\n      }\n\n      return number;\n    }\n    /**\n     * The base implementation of `_.clone` and `_.cloneDeep` which tracks\n     * traversed objects.\n     *\n     * @private\n     * @param {*} value The value to clone.\n     * @param {boolean} bitmask The bitmask flags.\n     *  1 - Deep clone\n     *  2 - Flatten inherited properties\n     *  4 - Clone symbols\n     * @param {Function} [customizer] The function to customize cloning.\n     * @param {string} [key] The key of `value`.\n     * @param {Object} [object] The parent object of `value`.\n     * @param {Object} [stack] Tracks traversed objects and their clone counterparts.\n     * @returns {*} Returns the cloned value.\n     */\n\n\n    function baseClone(value, bitmask, customizer, key, object, stack) {\n      var result,\n          isDeep = bitmask & CLONE_DEEP_FLAG,\n          isFlat = bitmask & CLONE_FLAT_FLAG,\n          isFull = bitmask & CLONE_SYMBOLS_FLAG;\n\n      if (customizer) {\n        result = object ? customizer(value, key, object, stack) : customizer(value);\n      }\n\n      if (result !== undefined) {\n        return result;\n      }\n\n      if (!isObject(value)) {\n        return value;\n      }\n\n      var isArr = isArray(value);\n\n      if (isArr) {\n        result = initCloneArray(value);\n\n        if (!isDeep) {\n          return copyArray(value, result);\n        }\n      } else {\n        var tag = getTag(value),\n            isFunc = tag == funcTag || tag == genTag;\n\n        if (isBuffer(value)) {\n          return cloneBuffer(value, isDeep);\n        }\n\n        if (tag == objectTag || tag == argsTag || isFunc && !object) {\n          result = isFlat || isFunc ? {} : initCloneObject(value);\n\n          if (!isDeep) {\n            return isFlat ? copySymbolsIn(value, baseAssignIn(result, value)) : copySymbols(value, baseAssign(result, value));\n          }\n        } else {\n          if (!cloneableTags[tag]) {\n            return object ? value : {};\n          }\n\n          result = initCloneByTag(value, tag, isDeep);\n        }\n      } // Check for circular references and return its corresponding clone.\n\n\n      stack || (stack = new Stack());\n      var stacked = stack.get(value);\n\n      if (stacked) {\n        return stacked;\n      }\n\n      stack.set(value, result);\n\n      if (isSet(value)) {\n        value.forEach(function (subValue) {\n          result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));\n        });\n      } else if (isMap(value)) {\n        value.forEach(function (subValue, key) {\n          result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));\n        });\n      }\n\n      var keysFunc = isFull ? isFlat ? getAllKeysIn : getAllKeys : isFlat ? keysIn : keys;\n      var props = isArr ? undefined : keysFunc(value);\n      arrayEach(props || value, function (subValue, key) {\n        if (props) {\n          key = subValue;\n          subValue = value[key];\n        } // Recursively populate clone (susceptible to call stack limits).\n\n\n        assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));\n      });\n      return result;\n    }\n    /**\n     * The base implementation of `_.conforms` which doesn't clone `source`.\n     *\n     * @private\n     * @param {Object} source The object of property predicates to conform to.\n     * @returns {Function} Returns the new spec function.\n     */\n\n\n    function baseConforms(source) {\n      var props = keys(source);\n      return function (object) {\n        return baseConformsTo(object, source, props);\n      };\n    }\n    /**\n     * The base implementation of `_.conformsTo` which accepts `props` to check.\n     *\n     * @private\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property predicates to conform to.\n     * @returns {boolean} Returns `true` if `object` conforms, else `false`.\n     */\n\n\n    function baseConformsTo(object, source, props) {\n      var length = props.length;\n\n      if (object == null) {\n        return !length;\n      }\n\n      object = Object(object);\n\n      while (length--) {\n        var key = props[length],\n            predicate = source[key],\n            value = object[key];\n\n        if (value === undefined && !(key in object) || !predicate(value)) {\n          return false;\n        }\n      }\n\n      return true;\n    }\n    /**\n     * The base implementation of `_.delay` and `_.defer` which accepts `args`\n     * to provide to `func`.\n     *\n     * @private\n     * @param {Function} func The function to delay.\n     * @param {number} wait The number of milliseconds to delay invocation.\n     * @param {Array} args The arguments to provide to `func`.\n     * @returns {number|Object} Returns the timer id or timeout object.\n     */\n\n\n    function baseDelay(func, wait, args) {\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n\n      return setTimeout(function () {\n        func.apply(undefined, args);\n      }, wait);\n    }\n    /**\n     * The base implementation of methods like `_.difference` without support\n     * for excluding multiple arrays or iteratee shorthands.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {Array} values The values to exclude.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     */\n\n\n    function baseDifference(array, values, iteratee, comparator) {\n      var index = -1,\n          includes = arrayIncludes,\n          isCommon = true,\n          length = array.length,\n          result = [],\n          valuesLength = values.length;\n\n      if (!length) {\n        return result;\n      }\n\n      if (iteratee) {\n        values = arrayMap(values, baseUnary(iteratee));\n      }\n\n      if (comparator) {\n        includes = arrayIncludesWith;\n        isCommon = false;\n      } else if (values.length >= LARGE_ARRAY_SIZE) {\n        includes = cacheHas;\n        isCommon = false;\n        values = new SetCache(values);\n      }\n\n      outer: while (++index < length) {\n        var value = array[index],\n            computed = iteratee == null ? value : iteratee(value);\n        value = comparator || value !== 0 ? value : 0;\n\n        if (isCommon && computed === computed) {\n          var valuesIndex = valuesLength;\n\n          while (valuesIndex--) {\n            if (values[valuesIndex] === computed) {\n              continue outer;\n            }\n          }\n\n          result.push(value);\n        } else if (!includes(values, computed, comparator)) {\n          result.push(value);\n        }\n      }\n\n      return result;\n    }\n    /**\n     * The base implementation of `_.forEach` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Array|Object} Returns `collection`.\n     */\n\n\n    var baseEach = createBaseEach(baseForOwn);\n    /**\n     * The base implementation of `_.forEachRight` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Array|Object} Returns `collection`.\n     */\n\n    var baseEachRight = createBaseEach(baseForOwnRight, true);\n    /**\n     * The base implementation of `_.every` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} predicate The function invoked per iteration.\n     * @returns {boolean} Returns `true` if all elements pass the predicate check,\n     *  else `false`\n     */\n\n    function baseEvery(collection, predicate) {\n      var result = true;\n      baseEach(collection, function (value, index, collection) {\n        result = !!predicate(value, index, collection);\n        return result;\n      });\n      return result;\n    }\n    /**\n     * The base implementation of methods like `_.max` and `_.min` which accepts a\n     * `comparator` to determine the extremum value.\n     *\n     * @private\n     * @param {Array} array The array to iterate over.\n     * @param {Function} iteratee The iteratee invoked per iteration.\n     * @param {Function} comparator The comparator used to compare values.\n     * @returns {*} Returns the extremum value.\n     */\n\n\n    function baseExtremum(array, iteratee, comparator) {\n      var index = -1,\n          length = array.length;\n\n      while (++index < length) {\n        var value = array[index],\n            current = iteratee(value);\n\n        if (current != null && (computed === undefined ? current === current && !isSymbol(current) : comparator(current, computed))) {\n          var computed = current,\n              result = value;\n        }\n      }\n\n      return result;\n    }\n    /**\n     * The base implementation of `_.fill` without an iteratee call guard.\n     *\n     * @private\n     * @param {Array} array The array to fill.\n     * @param {*} value The value to fill `array` with.\n     * @param {number} [start=0] The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns `array`.\n     */\n\n\n    function baseFill(array, value, start, end) {\n      var length = array.length;\n      start = toInteger(start);\n\n      if (start < 0) {\n        start = -start > length ? 0 : length + start;\n      }\n\n      end = end === undefined || end > length ? length : toInteger(end);\n\n      if (end < 0) {\n        end += length;\n      }\n\n      end = start > end ? 0 : toLength(end);\n\n      while (start < end) {\n        array[start++] = value;\n      }\n\n      return array;\n    }\n    /**\n     * The base implementation of `_.filter` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} predicate The function invoked per iteration.\n     * @returns {Array} Returns the new filtered array.\n     */\n\n\n    function baseFilter(collection, predicate) {\n      var result = [];\n      baseEach(collection, function (value, index, collection) {\n        if (predicate(value, index, collection)) {\n          result.push(value);\n        }\n      });\n      return result;\n    }\n    /**\n     * The base implementation of `_.flatten` with support for restricting flattening.\n     *\n     * @private\n     * @param {Array} array The array to flatten.\n     * @param {number} depth The maximum recursion depth.\n     * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.\n     * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.\n     * @param {Array} [result=[]] The initial result value.\n     * @returns {Array} Returns the new flattened array.\n     */\n\n\n    function baseFlatten(array, depth, predicate, isStrict, result) {\n      var index = -1,\n          length = array.length;\n      predicate || (predicate = isFlattenable);\n      result || (result = []);\n\n      while (++index < length) {\n        var value = array[index];\n\n        if (depth > 0 && predicate(value)) {\n          if (depth > 1) {\n            // Recursively flatten arrays (susceptible to call stack limits).\n            baseFlatten(value, depth - 1, predicate, isStrict, result);\n          } else {\n            arrayPush(result, value);\n          }\n        } else if (!isStrict) {\n          result[result.length] = value;\n        }\n      }\n\n      return result;\n    }\n    /**\n     * The base implementation of `baseForOwn` which iterates over `object`\n     * properties returned by `keysFunc` and invokes `iteratee` for each property.\n     * Iteratee functions may exit iteration early by explicitly returning `false`.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @param {Function} keysFunc The function to get the keys of `object`.\n     * @returns {Object} Returns `object`.\n     */\n\n\n    var baseFor = createBaseFor();\n    /**\n     * This function is like `baseFor` except that it iterates over properties\n     * in the opposite order.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @param {Function} keysFunc The function to get the keys of `object`.\n     * @returns {Object} Returns `object`.\n     */\n\n    var baseForRight = createBaseFor(true);\n    /**\n     * The base implementation of `_.forOwn` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     */\n\n    function baseForOwn(object, iteratee) {\n      return object && baseFor(object, iteratee, keys);\n    }\n    /**\n     * The base implementation of `_.forOwnRight` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     */\n\n\n    function baseForOwnRight(object, iteratee) {\n      return object && baseForRight(object, iteratee, keys);\n    }\n    /**\n     * The base implementation of `_.functions` which creates an array of\n     * `object` function property names filtered from `props`.\n     *\n     * @private\n     * @param {Object} object The object to inspect.\n     * @param {Array} props The property names to filter.\n     * @returns {Array} Returns the function names.\n     */\n\n\n    function baseFunctions(object, props) {\n      return arrayFilter(props, function (key) {\n        return isFunction(object[key]);\n      });\n    }\n    /**\n     * The base implementation of `_.get` without support for default values.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the property to get.\n     * @returns {*} Returns the resolved value.\n     */\n\n\n    function baseGet(object, path) {\n      path = castPath(path, object);\n      var index = 0,\n          length = path.length;\n\n      while (object != null && index < length) {\n        object = object[toKey(path[index++])];\n      }\n\n      return index && index == length ? object : undefined;\n    }\n    /**\n     * The base implementation of `getAllKeys` and `getAllKeysIn` which uses\n     * `keysFunc` and `symbolsFunc` to get the enumerable property names and\n     * symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Function} keysFunc The function to get the keys of `object`.\n     * @param {Function} symbolsFunc The function to get the symbols of `object`.\n     * @returns {Array} Returns the array of property names and symbols.\n     */\n\n\n    function baseGetAllKeys(object, keysFunc, symbolsFunc) {\n      var result = keysFunc(object);\n      return isArray(object) ? result : arrayPush(result, symbolsFunc(object));\n    }\n    /**\n     * The base implementation of `getTag` without fallbacks for buggy environments.\n     *\n     * @private\n     * @param {*} value The value to query.\n     * @returns {string} Returns the `toStringTag`.\n     */\n\n\n    function baseGetTag(value) {\n      if (value == null) {\n        return value === undefined ? undefinedTag : nullTag;\n      }\n\n      return symToStringTag && symToStringTag in Object(value) ? getRawTag(value) : objectToString(value);\n    }\n    /**\n     * The base implementation of `_.gt` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is greater than `other`,\n     *  else `false`.\n     */\n\n\n    function baseGt(value, other) {\n      return value > other;\n    }\n    /**\n     * The base implementation of `_.has` without support for deep paths.\n     *\n     * @private\n     * @param {Object} [object] The object to query.\n     * @param {Array|string} key The key to check.\n     * @returns {boolean} Returns `true` if `key` exists, else `false`.\n     */\n\n\n    function baseHas(object, key) {\n      return object != null && hasOwnProperty.call(object, key);\n    }\n    /**\n     * The base implementation of `_.hasIn` without support for deep paths.\n     *\n     * @private\n     * @param {Object} [object] The object to query.\n     * @param {Array|string} key The key to check.\n     * @returns {boolean} Returns `true` if `key` exists, else `false`.\n     */\n\n\n    function baseHasIn(object, key) {\n      return object != null && key in Object(object);\n    }\n    /**\n     * The base implementation of `_.inRange` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {number} number The number to check.\n     * @param {number} start The start of the range.\n     * @param {number} end The end of the range.\n     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\n     */\n\n\n    function baseInRange(number, start, end) {\n      return number >= nativeMin(start, end) && number < nativeMax(start, end);\n    }\n    /**\n     * The base implementation of methods like `_.intersection`, without support\n     * for iteratee shorthands, that accepts an array of arrays to inspect.\n     *\n     * @private\n     * @param {Array} arrays The arrays to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of shared values.\n     */\n\n\n    function baseIntersection(arrays, iteratee, comparator) {\n      var includes = comparator ? arrayIncludesWith : arrayIncludes,\n          length = arrays[0].length,\n          othLength = arrays.length,\n          othIndex = othLength,\n          caches = Array(othLength),\n          maxLength = Infinity,\n          result = [];\n\n      while (othIndex--) {\n        var array = arrays[othIndex];\n\n        if (othIndex && iteratee) {\n          array = arrayMap(array, baseUnary(iteratee));\n        }\n\n        maxLength = nativeMin(array.length, maxLength);\n        caches[othIndex] = !comparator && (iteratee || length >= 120 && array.length >= 120) ? new SetCache(othIndex && array) : undefined;\n      }\n\n      array = arrays[0];\n      var index = -1,\n          seen = caches[0];\n\n      outer: while (++index < length && result.length < maxLength) {\n        var value = array[index],\n            computed = iteratee ? iteratee(value) : value;\n        value = comparator || value !== 0 ? value : 0;\n\n        if (!(seen ? cacheHas(seen, computed) : includes(result, computed, comparator))) {\n          othIndex = othLength;\n\n          while (--othIndex) {\n            var cache = caches[othIndex];\n\n            if (!(cache ? cacheHas(cache, computed) : includes(arrays[othIndex], computed, comparator))) {\n              continue outer;\n            }\n          }\n\n          if (seen) {\n            seen.push(computed);\n          }\n\n          result.push(value);\n        }\n      }\n\n      return result;\n    }\n    /**\n     * The base implementation of `_.invert` and `_.invertBy` which inverts\n     * `object` with values transformed by `iteratee` and set by `setter`.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} setter The function to set `accumulator` values.\n     * @param {Function} iteratee The iteratee to transform values.\n     * @param {Object} accumulator The initial inverted object.\n     * @returns {Function} Returns `accumulator`.\n     */\n\n\n    function baseInverter(object, setter, iteratee, accumulator) {\n      baseForOwn(object, function (value, key, object) {\n        setter(accumulator, iteratee(value), key, object);\n      });\n      return accumulator;\n    }\n    /**\n     * The base implementation of `_.invoke` without support for individual\n     * method arguments.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the method to invoke.\n     * @param {Array} args The arguments to invoke the method with.\n     * @returns {*} Returns the result of the invoked method.\n     */\n\n\n    function baseInvoke(object, path, args) {\n      path = castPath(path, object);\n      object = parent(object, path);\n      var func = object == null ? object : object[toKey(last(path))];\n      return func == null ? undefined : apply(func, object, args);\n    }\n    /**\n     * The base implementation of `_.isArguments`.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n     */\n\n\n    function baseIsArguments(value) {\n      return isObjectLike(value) && baseGetTag(value) == argsTag;\n    }\n    /**\n     * The base implementation of `_.isArrayBuffer` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n     */\n\n\n    function baseIsArrayBuffer(value) {\n      return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;\n    }\n    /**\n     * The base implementation of `_.isDate` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n     */\n\n\n    function baseIsDate(value) {\n      return isObjectLike(value) && baseGetTag(value) == dateTag;\n    }\n    /**\n     * The base implementation of `_.isEqual` which supports partial comparisons\n     * and tracks traversed objects.\n     *\n     * @private\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @param {boolean} bitmask The bitmask flags.\n     *  1 - Unordered comparison\n     *  2 - Partial comparison\n     * @param {Function} [customizer] The function to customize comparisons.\n     * @param {Object} [stack] Tracks traversed `value` and `other` objects.\n     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n     */\n\n\n    function baseIsEqual(value, other, bitmask, customizer, stack) {\n      if (value === other) {\n        return true;\n      }\n\n      if (value == null || other == null || !isObjectLike(value) && !isObjectLike(other)) {\n        return value !== value && other !== other;\n      }\n\n      return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);\n    }\n    /**\n     * A specialized version of `baseIsEqual` for arrays and objects which performs\n     * deep comparisons and tracks traversed objects enabling objects with circular\n     * references to be compared.\n     *\n     * @private\n     * @param {Object} object The object to compare.\n     * @param {Object} other The other object to compare.\n     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n     * @param {Function} customizer The function to customize comparisons.\n     * @param {Function} equalFunc The function to determine equivalents of values.\n     * @param {Object} [stack] Tracks traversed `object` and `other` objects.\n     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n     */\n\n\n    function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {\n      var objIsArr = isArray(object),\n          othIsArr = isArray(other),\n          objTag = objIsArr ? arrayTag : getTag(object),\n          othTag = othIsArr ? arrayTag : getTag(other);\n      objTag = objTag == argsTag ? objectTag : objTag;\n      othTag = othTag == argsTag ? objectTag : othTag;\n      var objIsObj = objTag == objectTag,\n          othIsObj = othTag == objectTag,\n          isSameTag = objTag == othTag;\n\n      if (isSameTag && isBuffer(object)) {\n        if (!isBuffer(other)) {\n          return false;\n        }\n\n        objIsArr = true;\n        objIsObj = false;\n      }\n\n      if (isSameTag && !objIsObj) {\n        stack || (stack = new Stack());\n        return objIsArr || isTypedArray(object) ? equalArrays(object, other, bitmask, customizer, equalFunc, stack) : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);\n      }\n\n      if (!(bitmask & COMPARE_PARTIAL_FLAG)) {\n        var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),\n            othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');\n\n        if (objIsWrapped || othIsWrapped) {\n          var objUnwrapped = objIsWrapped ? object.value() : object,\n              othUnwrapped = othIsWrapped ? other.value() : other;\n          stack || (stack = new Stack());\n          return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);\n        }\n      }\n\n      if (!isSameTag) {\n        return false;\n      }\n\n      stack || (stack = new Stack());\n      return equalObjects(object, other, bitmask, customizer, equalFunc, stack);\n    }\n    /**\n     * The base implementation of `_.isMap` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n     */\n\n\n    function baseIsMap(value) {\n      return isObjectLike(value) && getTag(value) == mapTag;\n    }\n    /**\n     * The base implementation of `_.isMatch` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property values to match.\n     * @param {Array} matchData The property names, values, and compare flags to match.\n     * @param {Function} [customizer] The function to customize comparisons.\n     * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n     */\n\n\n    function baseIsMatch(object, source, matchData, customizer) {\n      var index = matchData.length,\n          length = index,\n          noCustomizer = !customizer;\n\n      if (object == null) {\n        return !length;\n      }\n\n      object = Object(object);\n\n      while (index--) {\n        var data = matchData[index];\n\n        if (noCustomizer && data[2] ? data[1] !== object[data[0]] : !(data[0] in object)) {\n          return false;\n        }\n      }\n\n      while (++index < length) {\n        data = matchData[index];\n        var key = data[0],\n            objValue = object[key],\n            srcValue = data[1];\n\n        if (noCustomizer && data[2]) {\n          if (objValue === undefined && !(key in object)) {\n            return false;\n          }\n        } else {\n          var stack = new Stack();\n\n          if (customizer) {\n            var result = customizer(objValue, srcValue, key, object, source, stack);\n          }\n\n          if (!(result === undefined ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack) : result)) {\n            return false;\n          }\n        }\n      }\n\n      return true;\n    }\n    /**\n     * The base implementation of `_.isNative` without bad shim checks.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a native function,\n     *  else `false`.\n     */\n\n\n    function baseIsNative(value) {\n      if (!isObject(value) || isMasked(value)) {\n        return false;\n      }\n\n      var pattern = isFunction(value) ? reIsNative : reIsHostCtor;\n      return pattern.test(toSource(value));\n    }\n    /**\n     * The base implementation of `_.isRegExp` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n     */\n\n\n    function baseIsRegExp(value) {\n      return isObjectLike(value) && baseGetTag(value) == regexpTag;\n    }\n    /**\n     * The base implementation of `_.isSet` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n     */\n\n\n    function baseIsSet(value) {\n      return isObjectLike(value) && getTag(value) == setTag;\n    }\n    /**\n     * The base implementation of `_.isTypedArray` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n     */\n\n\n    function baseIsTypedArray(value) {\n      return isObjectLike(value) && isLength(value.length) && !!typedArrayTags[baseGetTag(value)];\n    }\n    /**\n     * The base implementation of `_.iteratee`.\n     *\n     * @private\n     * @param {*} [value=_.identity] The value to convert to an iteratee.\n     * @returns {Function} Returns the iteratee.\n     */\n\n\n    function baseIteratee(value) {\n      // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.\n      // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.\n      if (typeof value == 'function') {\n        return value;\n      }\n\n      if (value == null) {\n        return identity;\n      }\n\n      if (_typeof(value) == 'object') {\n        return isArray(value) ? baseMatchesProperty(value[0], value[1]) : baseMatches(value);\n      }\n\n      return property(value);\n    }\n    /**\n     * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     */\n\n\n    function baseKeys(object) {\n      if (!isPrototype(object)) {\n        return nativeKeys(object);\n      }\n\n      var result = [];\n\n      for (var key in Object(object)) {\n        if (hasOwnProperty.call(object, key) && key != 'constructor') {\n          result.push(key);\n        }\n      }\n\n      return result;\n    }\n    /**\n     * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     */\n\n\n    function baseKeysIn(object) {\n      if (!isObject(object)) {\n        return nativeKeysIn(object);\n      }\n\n      var isProto = isPrototype(object),\n          result = [];\n\n      for (var key in object) {\n        if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {\n          result.push(key);\n        }\n      }\n\n      return result;\n    }\n    /**\n     * The base implementation of `_.lt` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is less than `other`,\n     *  else `false`.\n     */\n\n\n    function baseLt(value, other) {\n      return value < other;\n    }\n    /**\n     * The base implementation of `_.map` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Array} Returns the new mapped array.\n     */\n\n\n    function baseMap(collection, iteratee) {\n      var index = -1,\n          result = isArrayLike(collection) ? Array(collection.length) : [];\n      baseEach(collection, function (value, key, collection) {\n        result[++index] = iteratee(value, key, collection);\n      });\n      return result;\n    }\n    /**\n     * The base implementation of `_.matches` which doesn't clone `source`.\n     *\n     * @private\n     * @param {Object} source The object of property values to match.\n     * @returns {Function} Returns the new spec function.\n     */\n\n\n    function baseMatches(source) {\n      var matchData = getMatchData(source);\n\n      if (matchData.length == 1 && matchData[0][2]) {\n        return matchesStrictComparable(matchData[0][0], matchData[0][1]);\n      }\n\n      return function (object) {\n        return object === source || baseIsMatch(object, source, matchData);\n      };\n    }\n    /**\n     * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.\n     *\n     * @private\n     * @param {string} path The path of the property to get.\n     * @param {*} srcValue The value to match.\n     * @returns {Function} Returns the new spec function.\n     */\n\n\n    function baseMatchesProperty(path, srcValue) {\n      if (isKey(path) && isStrictComparable(srcValue)) {\n        return matchesStrictComparable(toKey(path), srcValue);\n      }\n\n      return function (object) {\n        var objValue = get(object, path);\n        return objValue === undefined && objValue === srcValue ? hasIn(object, path) : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);\n      };\n    }\n    /**\n     * The base implementation of `_.merge` without support for multiple sources.\n     *\n     * @private\n     * @param {Object} object The destination object.\n     * @param {Object} source The source object.\n     * @param {number} srcIndex The index of `source`.\n     * @param {Function} [customizer] The function to customize merged values.\n     * @param {Object} [stack] Tracks traversed source values and their merged\n     *  counterparts.\n     */\n\n\n    function baseMerge(object, source, srcIndex, customizer, stack) {\n      if (object === source) {\n        return;\n      }\n\n      baseFor(source, function (srcValue, key) {\n        stack || (stack = new Stack());\n\n        if (isObject(srcValue)) {\n          baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);\n        } else {\n          var newValue = customizer ? customizer(safeGet(object, key), srcValue, key + '', object, source, stack) : undefined;\n\n          if (newValue === undefined) {\n            newValue = srcValue;\n          }\n\n          assignMergeValue(object, key, newValue);\n        }\n      }, keysIn);\n    }\n    /**\n     * A specialized version of `baseMerge` for arrays and objects which performs\n     * deep merges and tracks traversed objects enabling objects with circular\n     * references to be merged.\n     *\n     * @private\n     * @param {Object} object The destination object.\n     * @param {Object} source The source object.\n     * @param {string} key The key of the value to merge.\n     * @param {number} srcIndex The index of `source`.\n     * @param {Function} mergeFunc The function to merge values.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @param {Object} [stack] Tracks traversed source values and their merged\n     *  counterparts.\n     */\n\n\n    function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {\n      var objValue = safeGet(object, key),\n          srcValue = safeGet(source, key),\n          stacked = stack.get(srcValue);\n\n      if (stacked) {\n        assignMergeValue(object, key, stacked);\n        return;\n      }\n\n      var newValue = customizer ? customizer(objValue, srcValue, key + '', object, source, stack) : undefined;\n      var isCommon = newValue === undefined;\n\n      if (isCommon) {\n        var isArr = isArray(srcValue),\n            isBuff = !isArr && isBuffer(srcValue),\n            isTyped = !isArr && !isBuff && isTypedArray(srcValue);\n        newValue = srcValue;\n\n        if (isArr || isBuff || isTyped) {\n          if (isArray(objValue)) {\n            newValue = objValue;\n          } else if (isArrayLikeObject(objValue)) {\n            newValue = copyArray(objValue);\n          } else if (isBuff) {\n            isCommon = false;\n            newValue = cloneBuffer(srcValue, true);\n          } else if (isTyped) {\n            isCommon = false;\n            newValue = cloneTypedArray(srcValue, true);\n          } else {\n            newValue = [];\n          }\n        } else if (isPlainObject(srcValue) || isArguments(srcValue)) {\n          newValue = objValue;\n\n          if (isArguments(objValue)) {\n            newValue = toPlainObject(objValue);\n          } else if (!isObject(objValue) || isFunction(objValue)) {\n            newValue = initCloneObject(srcValue);\n          }\n        } else {\n          isCommon = false;\n        }\n      }\n\n      if (isCommon) {\n        // Recursively merge objects and arrays (susceptible to call stack limits).\n        stack.set(srcValue, newValue);\n        mergeFunc(newValue, srcValue, srcIndex, customizer, stack);\n        stack['delete'](srcValue);\n      }\n\n      assignMergeValue(object, key, newValue);\n    }\n    /**\n     * The base implementation of `_.nth` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {Array} array The array to query.\n     * @param {number} n The index of the element to return.\n     * @returns {*} Returns the nth element of `array`.\n     */\n\n\n    function baseNth(array, n) {\n      var length = array.length;\n\n      if (!length) {\n        return;\n      }\n\n      n += n < 0 ? length : 0;\n      return isIndex(n, length) ? array[n] : undefined;\n    }\n    /**\n     * The base implementation of `_.orderBy` without param guards.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.\n     * @param {string[]} orders The sort orders of `iteratees`.\n     * @returns {Array} Returns the new sorted array.\n     */\n\n\n    function baseOrderBy(collection, iteratees, orders) {\n      if (iteratees.length) {\n        iteratees = arrayMap(iteratees, function (iteratee) {\n          if (isArray(iteratee)) {\n            return function (value) {\n              return baseGet(value, iteratee.length === 1 ? iteratee[0] : iteratee);\n            };\n          }\n\n          return iteratee;\n        });\n      } else {\n        iteratees = [identity];\n      }\n\n      var index = -1;\n      iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\n      var result = baseMap(collection, function (value, key, collection) {\n        var criteria = arrayMap(iteratees, function (iteratee) {\n          return iteratee(value);\n        });\n        return {\n          'criteria': criteria,\n          'index': ++index,\n          'value': value\n        };\n      });\n      return baseSortBy(result, function (object, other) {\n        return compareMultiple(object, other, orders);\n      });\n    }\n    /**\n     * The base implementation of `_.pick` without support for individual\n     * property identifiers.\n     *\n     * @private\n     * @param {Object} object The source object.\n     * @param {string[]} paths The property paths to pick.\n     * @returns {Object} Returns the new object.\n     */\n\n\n    function basePick(object, paths) {\n      return basePickBy(object, paths, function (value, path) {\n        return hasIn(object, path);\n      });\n    }\n    /**\n     * The base implementation of  `_.pickBy` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Object} object The source object.\n     * @param {string[]} paths The property paths to pick.\n     * @param {Function} predicate The function invoked per property.\n     * @returns {Object} Returns the new object.\n     */\n\n\n    function basePickBy(object, paths, predicate) {\n      var index = -1,\n          length = paths.length,\n          result = {};\n\n      while (++index < length) {\n        var path = paths[index],\n            value = baseGet(object, path);\n\n        if (predicate(value, path)) {\n          baseSet(result, castPath(path, object), value);\n        }\n      }\n\n      return result;\n    }\n    /**\n     * A specialized version of `baseProperty` which supports deep paths.\n     *\n     * @private\n     * @param {Array|string} path The path of the property to get.\n     * @returns {Function} Returns the new accessor function.\n     */\n\n\n    function basePropertyDeep(path) {\n      return function (object) {\n        return baseGet(object, path);\n      };\n    }\n    /**\n     * The base implementation of `_.pullAllBy` without support for iteratee\n     * shorthands.\n     *\n     * @private\n     * @param {Array} array The array to modify.\n     * @param {Array} values The values to remove.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns `array`.\n     */\n\n\n    function basePullAll(array, values, iteratee, comparator) {\n      var indexOf = comparator ? baseIndexOfWith : baseIndexOf,\n          index = -1,\n          length = values.length,\n          seen = array;\n\n      if (array === values) {\n        values = copyArray(values);\n      }\n\n      if (iteratee) {\n        seen = arrayMap(array, baseUnary(iteratee));\n      }\n\n      while (++index < length) {\n        var fromIndex = 0,\n            value = values[index],\n            computed = iteratee ? iteratee(value) : value;\n\n        while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {\n          if (seen !== array) {\n            splice.call(seen, fromIndex, 1);\n          }\n\n          splice.call(array, fromIndex, 1);\n        }\n      }\n\n      return array;\n    }\n    /**\n     * The base implementation of `_.pullAt` without support for individual\n     * indexes or capturing the removed elements.\n     *\n     * @private\n     * @param {Array} array The array to modify.\n     * @param {number[]} indexes The indexes of elements to remove.\n     * @returns {Array} Returns `array`.\n     */\n\n\n    function basePullAt(array, indexes) {\n      var length = array ? indexes.length : 0,\n          lastIndex = length - 1;\n\n      while (length--) {\n        var index = indexes[length];\n\n        if (length == lastIndex || index !== previous) {\n          var previous = index;\n\n          if (isIndex(index)) {\n            splice.call(array, index, 1);\n          } else {\n            baseUnset(array, index);\n          }\n        }\n      }\n\n      return array;\n    }\n    /**\n     * The base implementation of `_.random` without support for returning\n     * floating-point numbers.\n     *\n     * @private\n     * @param {number} lower The lower bound.\n     * @param {number} upper The upper bound.\n     * @returns {number} Returns the random number.\n     */\n\n\n    function baseRandom(lower, upper) {\n      return lower + nativeFloor(nativeRandom() * (upper - lower + 1));\n    }\n    /**\n     * The base implementation of `_.range` and `_.rangeRight` which doesn't\n     * coerce arguments.\n     *\n     * @private\n     * @param {number} start The start of the range.\n     * @param {number} end The end of the range.\n     * @param {number} step The value to increment or decrement by.\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Array} Returns the range of numbers.\n     */\n\n\n    function baseRange(start, end, step, fromRight) {\n      var index = -1,\n          length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),\n          result = Array(length);\n\n      while (length--) {\n        result[fromRight ? length : ++index] = start;\n        start += step;\n      }\n\n      return result;\n    }\n    /**\n     * The base implementation of `_.repeat` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {string} string The string to repeat.\n     * @param {number} n The number of times to repeat the string.\n     * @returns {string} Returns the repeated string.\n     */\n\n\n    function baseRepeat(string, n) {\n      var result = '';\n\n      if (!string || n < 1 || n > MAX_SAFE_INTEGER) {\n        return result;\n      } // Leverage the exponentiation by squaring algorithm for a faster repeat.\n      // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.\n\n\n      do {\n        if (n % 2) {\n          result += string;\n        }\n\n        n = nativeFloor(n / 2);\n\n        if (n) {\n          string += string;\n        }\n      } while (n);\n\n      return result;\n    }\n    /**\n     * The base implementation of `_.rest` which doesn't validate or coerce arguments.\n     *\n     * @private\n     * @param {Function} func The function to apply a rest parameter to.\n     * @param {number} [start=func.length-1] The start position of the rest parameter.\n     * @returns {Function} Returns the new function.\n     */\n\n\n    function baseRest(func, start) {\n      return setToString(overRest(func, start, identity), func + '');\n    }\n    /**\n     * The base implementation of `_.sample`.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to sample.\n     * @returns {*} Returns the random element.\n     */\n\n\n    function baseSample(collection) {\n      return arraySample(values(collection));\n    }\n    /**\n     * The base implementation of `_.sampleSize` without param guards.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to sample.\n     * @param {number} n The number of elements to sample.\n     * @returns {Array} Returns the random elements.\n     */\n\n\n    function baseSampleSize(collection, n) {\n      var array = values(collection);\n      return shuffleSelf(array, baseClamp(n, 0, array.length));\n    }\n    /**\n     * The base implementation of `_.set`.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {*} value The value to set.\n     * @param {Function} [customizer] The function to customize path creation.\n     * @returns {Object} Returns `object`.\n     */\n\n\n    function baseSet(object, path, value, customizer) {\n      if (!isObject(object)) {\n        return object;\n      }\n\n      path = castPath(path, object);\n      var index = -1,\n          length = path.length,\n          lastIndex = length - 1,\n          nested = object;\n\n      while (nested != null && ++index < length) {\n        var key = toKey(path[index]),\n            newValue = value;\n\n        if (key === '__proto__' || key === 'constructor' || key === 'prototype') {\n          return object;\n        }\n\n        if (index != lastIndex) {\n          var objValue = nested[key];\n          newValue = customizer ? customizer(objValue, key, nested) : undefined;\n\n          if (newValue === undefined) {\n            newValue = isObject(objValue) ? objValue : isIndex(path[index + 1]) ? [] : {};\n          }\n        }\n\n        assignValue(nested, key, newValue);\n        nested = nested[key];\n      }\n\n      return object;\n    }\n    /**\n     * The base implementation of `setData` without support for hot loop shorting.\n     *\n     * @private\n     * @param {Function} func The function to associate metadata with.\n     * @param {*} data The metadata.\n     * @returns {Function} Returns `func`.\n     */\n\n\n    var baseSetData = !metaMap ? identity : function (func, data) {\n      metaMap.set(func, data);\n      return func;\n    };\n    /**\n     * The base implementation of `setToString` without support for hot loop shorting.\n     *\n     * @private\n     * @param {Function} func The function to modify.\n     * @param {Function} string The `toString` result.\n     * @returns {Function} Returns `func`.\n     */\n\n    var baseSetToString = !defineProperty ? identity : function (func, string) {\n      return defineProperty(func, 'toString', {\n        'configurable': true,\n        'enumerable': false,\n        'value': constant(string),\n        'writable': true\n      });\n    };\n    /**\n     * The base implementation of `_.shuffle`.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to shuffle.\n     * @returns {Array} Returns the new shuffled array.\n     */\n\n    function baseShuffle(collection) {\n      return shuffleSelf(values(collection));\n    }\n    /**\n     * The base implementation of `_.slice` without an iteratee call guard.\n     *\n     * @private\n     * @param {Array} array The array to slice.\n     * @param {number} [start=0] The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns the slice of `array`.\n     */\n\n\n    function baseSlice(array, start, end) {\n      var index = -1,\n          length = array.length;\n\n      if (start < 0) {\n        start = -start > length ? 0 : length + start;\n      }\n\n      end = end > length ? length : end;\n\n      if (end < 0) {\n        end += length;\n      }\n\n      length = start > end ? 0 : end - start >>> 0;\n      start >>>= 0;\n      var result = Array(length);\n\n      while (++index < length) {\n        result[index] = array[index + start];\n      }\n\n      return result;\n    }\n    /**\n     * The base implementation of `_.some` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} predicate The function invoked per iteration.\n     * @returns {boolean} Returns `true` if any element passes the predicate check,\n     *  else `false`.\n     */\n\n\n    function baseSome(collection, predicate) {\n      var result;\n      baseEach(collection, function (value, index, collection) {\n        result = predicate(value, index, collection);\n        return !result;\n      });\n      return !!result;\n    }\n    /**\n     * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which\n     * performs a binary search of `array` to determine the index at which `value`\n     * should be inserted into `array` in order to maintain its sort order.\n     *\n     * @private\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @param {boolean} [retHighest] Specify returning the highest qualified index.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     */\n\n\n    function baseSortedIndex(array, value, retHighest) {\n      var low = 0,\n          high = array == null ? low : array.length;\n\n      if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {\n        while (low < high) {\n          var mid = low + high >>> 1,\n              computed = array[mid];\n\n          if (computed !== null && !isSymbol(computed) && (retHighest ? computed <= value : computed < value)) {\n            low = mid + 1;\n          } else {\n            high = mid;\n          }\n        }\n\n        return high;\n      }\n\n      return baseSortedIndexBy(array, value, identity, retHighest);\n    }\n    /**\n     * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`\n     * which invokes `iteratee` for `value` and each element of `array` to compute\n     * their sort ranking. The iteratee is invoked with one argument; (value).\n     *\n     * @private\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @param {Function} iteratee The iteratee invoked per element.\n     * @param {boolean} [retHighest] Specify returning the highest qualified index.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     */\n\n\n    function baseSortedIndexBy(array, value, iteratee, retHighest) {\n      var low = 0,\n          high = array == null ? 0 : array.length;\n\n      if (high === 0) {\n        return 0;\n      }\n\n      value = iteratee(value);\n      var valIsNaN = value !== value,\n          valIsNull = value === null,\n          valIsSymbol = isSymbol(value),\n          valIsUndefined = value === undefined;\n\n      while (low < high) {\n        var mid = nativeFloor((low + high) / 2),\n            computed = iteratee(array[mid]),\n            othIsDefined = computed !== undefined,\n            othIsNull = computed === null,\n            othIsReflexive = computed === computed,\n            othIsSymbol = isSymbol(computed);\n\n        if (valIsNaN) {\n          var setLow = retHighest || othIsReflexive;\n        } else if (valIsUndefined) {\n          setLow = othIsReflexive && (retHighest || othIsDefined);\n        } else if (valIsNull) {\n          setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);\n        } else if (valIsSymbol) {\n          setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);\n        } else if (othIsNull || othIsSymbol) {\n          setLow = false;\n        } else {\n          setLow = retHighest ? computed <= value : computed < value;\n        }\n\n        if (setLow) {\n          low = mid + 1;\n        } else {\n          high = mid;\n        }\n      }\n\n      return nativeMin(high, MAX_ARRAY_INDEX);\n    }\n    /**\n     * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without\n     * support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     */\n\n\n    function baseSortedUniq(array, iteratee) {\n      var index = -1,\n          length = array.length,\n          resIndex = 0,\n          result = [];\n\n      while (++index < length) {\n        var value = array[index],\n            computed = iteratee ? iteratee(value) : value;\n\n        if (!index || !eq(computed, seen)) {\n          var seen = computed;\n          result[resIndex++] = value === 0 ? 0 : value;\n        }\n      }\n\n      return result;\n    }\n    /**\n     * The base implementation of `_.toNumber` which doesn't ensure correct\n     * conversions of binary, hexadecimal, or octal string values.\n     *\n     * @private\n     * @param {*} value The value to process.\n     * @returns {number} Returns the number.\n     */\n\n\n    function baseToNumber(value) {\n      if (typeof value == 'number') {\n        return value;\n      }\n\n      if (isSymbol(value)) {\n        return NAN;\n      }\n\n      return +value;\n    }\n    /**\n     * The base implementation of `_.toString` which doesn't convert nullish\n     * values to empty strings.\n     *\n     * @private\n     * @param {*} value The value to process.\n     * @returns {string} Returns the string.\n     */\n\n\n    function baseToString(value) {\n      // Exit early for strings to avoid a performance hit in some environments.\n      if (typeof value == 'string') {\n        return value;\n      }\n\n      if (isArray(value)) {\n        // Recursively convert values (susceptible to call stack limits).\n        return arrayMap(value, baseToString) + '';\n      }\n\n      if (isSymbol(value)) {\n        return symbolToString ? symbolToString.call(value) : '';\n      }\n\n      var result = value + '';\n      return result == '0' && 1 / value == -INFINITY ? '-0' : result;\n    }\n    /**\n     * The base implementation of `_.uniqBy` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     */\n\n\n    function baseUniq(array, iteratee, comparator) {\n      var index = -1,\n          includes = arrayIncludes,\n          length = array.length,\n          isCommon = true,\n          result = [],\n          seen = result;\n\n      if (comparator) {\n        isCommon = false;\n        includes = arrayIncludesWith;\n      } else if (length >= LARGE_ARRAY_SIZE) {\n        var set = iteratee ? null : createSet(array);\n\n        if (set) {\n          return setToArray(set);\n        }\n\n        isCommon = false;\n        includes = cacheHas;\n        seen = new SetCache();\n      } else {\n        seen = iteratee ? [] : result;\n      }\n\n      outer: while (++index < length) {\n        var value = array[index],\n            computed = iteratee ? iteratee(value) : value;\n        value = comparator || value !== 0 ? value : 0;\n\n        if (isCommon && computed === computed) {\n          var seenIndex = seen.length;\n\n          while (seenIndex--) {\n            if (seen[seenIndex] === computed) {\n              continue outer;\n            }\n          }\n\n          if (iteratee) {\n            seen.push(computed);\n          }\n\n          result.push(value);\n        } else if (!includes(seen, computed, comparator)) {\n          if (seen !== result) {\n            seen.push(computed);\n          }\n\n          result.push(value);\n        }\n      }\n\n      return result;\n    }\n    /**\n     * The base implementation of `_.unset`.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The property path to unset.\n     * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n     */\n\n\n    function baseUnset(object, path) {\n      path = castPath(path, object);\n      object = parent(object, path);\n      return object == null || delete object[toKey(last(path))];\n    }\n    /**\n     * The base implementation of `_.update`.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to update.\n     * @param {Function} updater The function to produce the updated value.\n     * @param {Function} [customizer] The function to customize path creation.\n     * @returns {Object} Returns `object`.\n     */\n\n\n    function baseUpdate(object, path, updater, customizer) {\n      return baseSet(object, path, updater(baseGet(object, path)), customizer);\n    }\n    /**\n     * The base implementation of methods like `_.dropWhile` and `_.takeWhile`\n     * without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array} array The array to query.\n     * @param {Function} predicate The function invoked per iteration.\n     * @param {boolean} [isDrop] Specify dropping elements instead of taking them.\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Array} Returns the slice of `array`.\n     */\n\n\n    function baseWhile(array, predicate, isDrop, fromRight) {\n      var length = array.length,\n          index = fromRight ? length : -1;\n\n      while ((fromRight ? index-- : ++index < length) && predicate(array[index], index, array)) {}\n\n      return isDrop ? baseSlice(array, fromRight ? 0 : index, fromRight ? index + 1 : length) : baseSlice(array, fromRight ? index + 1 : 0, fromRight ? length : index);\n    }\n    /**\n     * The base implementation of `wrapperValue` which returns the result of\n     * performing a sequence of actions on the unwrapped `value`, where each\n     * successive action is supplied the return value of the previous.\n     *\n     * @private\n     * @param {*} value The unwrapped value.\n     * @param {Array} actions Actions to perform to resolve the unwrapped value.\n     * @returns {*} Returns the resolved value.\n     */\n\n\n    function baseWrapperValue(value, actions) {\n      var result = value;\n\n      if (result instanceof LazyWrapper) {\n        result = result.value();\n      }\n\n      return arrayReduce(actions, function (result, action) {\n        return action.func.apply(action.thisArg, arrayPush([result], action.args));\n      }, result);\n    }\n    /**\n     * The base implementation of methods like `_.xor`, without support for\n     * iteratee shorthands, that accepts an array of arrays to inspect.\n     *\n     * @private\n     * @param {Array} arrays The arrays to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of values.\n     */\n\n\n    function baseXor(arrays, iteratee, comparator) {\n      var length = arrays.length;\n\n      if (length < 2) {\n        return length ? baseUniq(arrays[0]) : [];\n      }\n\n      var index = -1,\n          result = Array(length);\n\n      while (++index < length) {\n        var array = arrays[index],\n            othIndex = -1;\n\n        while (++othIndex < length) {\n          if (othIndex != index) {\n            result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);\n          }\n        }\n      }\n\n      return baseUniq(baseFlatten(result, 1), iteratee, comparator);\n    }\n    /**\n     * This base implementation of `_.zipObject` which assigns values using `assignFunc`.\n     *\n     * @private\n     * @param {Array} props The property identifiers.\n     * @param {Array} values The property values.\n     * @param {Function} assignFunc The function to assign values.\n     * @returns {Object} Returns the new object.\n     */\n\n\n    function baseZipObject(props, values, assignFunc) {\n      var index = -1,\n          length = props.length,\n          valsLength = values.length,\n          result = {};\n\n      while (++index < length) {\n        var value = index < valsLength ? values[index] : undefined;\n        assignFunc(result, props[index], value);\n      }\n\n      return result;\n    }\n    /**\n     * Casts `value` to an empty array if it's not an array like object.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @returns {Array|Object} Returns the cast array-like object.\n     */\n\n\n    function castArrayLikeObject(value) {\n      return isArrayLikeObject(value) ? value : [];\n    }\n    /**\n     * Casts `value` to `identity` if it's not a function.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @returns {Function} Returns cast function.\n     */\n\n\n    function castFunction(value) {\n      return typeof value == 'function' ? value : identity;\n    }\n    /**\n     * Casts `value` to a path array if it's not one.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @param {Object} [object] The object to query keys on.\n     * @returns {Array} Returns the cast property path array.\n     */\n\n\n    function castPath(value, object) {\n      if (isArray(value)) {\n        return value;\n      }\n\n      return isKey(value, object) ? [value] : stringToPath(toString(value));\n    }\n    /**\n     * A `baseRest` alias which can be replaced with `identity` by module\n     * replacement plugins.\n     *\n     * @private\n     * @type {Function}\n     * @param {Function} func The function to apply a rest parameter to.\n     * @returns {Function} Returns the new function.\n     */\n\n\n    var castRest = baseRest;\n    /**\n     * Casts `array` to a slice if it's needed.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {number} start The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns the cast slice.\n     */\n\n    function castSlice(array, start, end) {\n      var length = array.length;\n      end = end === undefined ? length : end;\n      return !start && end >= length ? array : baseSlice(array, start, end);\n    }\n    /**\n     * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).\n     *\n     * @private\n     * @param {number|Object} id The timer id or timeout object of the timer to clear.\n     */\n\n\n    var clearTimeout = ctxClearTimeout || function (id) {\n      return root.clearTimeout(id);\n    };\n    /**\n     * Creates a clone of  `buffer`.\n     *\n     * @private\n     * @param {Buffer} buffer The buffer to clone.\n     * @param {boolean} [isDeep] Specify a deep clone.\n     * @returns {Buffer} Returns the cloned buffer.\n     */\n\n\n    function cloneBuffer(buffer, isDeep) {\n      if (isDeep) {\n        return buffer.slice();\n      }\n\n      var length = buffer.length,\n          result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);\n      buffer.copy(result);\n      return result;\n    }\n    /**\n     * Creates a clone of `arrayBuffer`.\n     *\n     * @private\n     * @param {ArrayBuffer} arrayBuffer The array buffer to clone.\n     * @returns {ArrayBuffer} Returns the cloned array buffer.\n     */\n\n\n    function cloneArrayBuffer(arrayBuffer) {\n      var result = new arrayBuffer.constructor(arrayBuffer.byteLength);\n      new Uint8Array(result).set(new Uint8Array(arrayBuffer));\n      return result;\n    }\n    /**\n     * Creates a clone of `dataView`.\n     *\n     * @private\n     * @param {Object} dataView The data view to clone.\n     * @param {boolean} [isDeep] Specify a deep clone.\n     * @returns {Object} Returns the cloned data view.\n     */\n\n\n    function cloneDataView(dataView, isDeep) {\n      var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;\n      return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);\n    }\n    /**\n     * Creates a clone of `regexp`.\n     *\n     * @private\n     * @param {Object} regexp The regexp to clone.\n     * @returns {Object} Returns the cloned regexp.\n     */\n\n\n    function cloneRegExp(regexp) {\n      var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));\n      result.lastIndex = regexp.lastIndex;\n      return result;\n    }\n    /**\n     * Creates a clone of the `symbol` object.\n     *\n     * @private\n     * @param {Object} symbol The symbol object to clone.\n     * @returns {Object} Returns the cloned symbol object.\n     */\n\n\n    function cloneSymbol(symbol) {\n      return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};\n    }\n    /**\n     * Creates a clone of `typedArray`.\n     *\n     * @private\n     * @param {Object} typedArray The typed array to clone.\n     * @param {boolean} [isDeep] Specify a deep clone.\n     * @returns {Object} Returns the cloned typed array.\n     */\n\n\n    function cloneTypedArray(typedArray, isDeep) {\n      var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;\n      return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);\n    }\n    /**\n     * Compares values to sort them in ascending order.\n     *\n     * @private\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {number} Returns the sort order indicator for `value`.\n     */\n\n\n    function compareAscending(value, other) {\n      if (value !== other) {\n        var valIsDefined = value !== undefined,\n            valIsNull = value === null,\n            valIsReflexive = value === value,\n            valIsSymbol = isSymbol(value);\n        var othIsDefined = other !== undefined,\n            othIsNull = other === null,\n            othIsReflexive = other === other,\n            othIsSymbol = isSymbol(other);\n\n        if (!othIsNull && !othIsSymbol && !valIsSymbol && value > other || valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol || valIsNull && othIsDefined && othIsReflexive || !valIsDefined && othIsReflexive || !valIsReflexive) {\n          return 1;\n        }\n\n        if (!valIsNull && !valIsSymbol && !othIsSymbol && value < other || othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol || othIsNull && valIsDefined && valIsReflexive || !othIsDefined && valIsReflexive || !othIsReflexive) {\n          return -1;\n        }\n      }\n\n      return 0;\n    }\n    /**\n     * Used by `_.orderBy` to compare multiple properties of a value to another\n     * and stable sort them.\n     *\n     * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,\n     * specify an order of \"desc\" for descending or \"asc\" for ascending sort order\n     * of corresponding values.\n     *\n     * @private\n     * @param {Object} object The object to compare.\n     * @param {Object} other The other object to compare.\n     * @param {boolean[]|string[]} orders The order to sort by for each property.\n     * @returns {number} Returns the sort order indicator for `object`.\n     */\n\n\n    function compareMultiple(object, other, orders) {\n      var index = -1,\n          objCriteria = object.criteria,\n          othCriteria = other.criteria,\n          length = objCriteria.length,\n          ordersLength = orders.length;\n\n      while (++index < length) {\n        var result = compareAscending(objCriteria[index], othCriteria[index]);\n\n        if (result) {\n          if (index >= ordersLength) {\n            return result;\n          }\n\n          var order = orders[index];\n          return result * (order == 'desc' ? -1 : 1);\n        }\n      } // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications\n      // that causes it, under certain circumstances, to provide the same value for\n      // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247\n      // for more details.\n      //\n      // This also ensures a stable sort in V8 and other engines.\n      // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.\n\n\n      return object.index - other.index;\n    }\n    /**\n     * Creates an array that is the composition of partially applied arguments,\n     * placeholders, and provided arguments into a single array of arguments.\n     *\n     * @private\n     * @param {Array} args The provided arguments.\n     * @param {Array} partials The arguments to prepend to those provided.\n     * @param {Array} holders The `partials` placeholder indexes.\n     * @params {boolean} [isCurried] Specify composing for a curried function.\n     * @returns {Array} Returns the new array of composed arguments.\n     */\n\n\n    function composeArgs(args, partials, holders, isCurried) {\n      var argsIndex = -1,\n          argsLength = args.length,\n          holdersLength = holders.length,\n          leftIndex = -1,\n          leftLength = partials.length,\n          rangeLength = nativeMax(argsLength - holdersLength, 0),\n          result = Array(leftLength + rangeLength),\n          isUncurried = !isCurried;\n\n      while (++leftIndex < leftLength) {\n        result[leftIndex] = partials[leftIndex];\n      }\n\n      while (++argsIndex < holdersLength) {\n        if (isUncurried || argsIndex < argsLength) {\n          result[holders[argsIndex]] = args[argsIndex];\n        }\n      }\n\n      while (rangeLength--) {\n        result[leftIndex++] = args[argsIndex++];\n      }\n\n      return result;\n    }\n    /**\n     * This function is like `composeArgs` except that the arguments composition\n     * is tailored for `_.partialRight`.\n     *\n     * @private\n     * @param {Array} args The provided arguments.\n     * @param {Array} partials The arguments to append to those provided.\n     * @param {Array} holders The `partials` placeholder indexes.\n     * @params {boolean} [isCurried] Specify composing for a curried function.\n     * @returns {Array} Returns the new array of composed arguments.\n     */\n\n\n    function composeArgsRight(args, partials, holders, isCurried) {\n      var argsIndex = -1,\n          argsLength = args.length,\n          holdersIndex = -1,\n          holdersLength = holders.length,\n          rightIndex = -1,\n          rightLength = partials.length,\n          rangeLength = nativeMax(argsLength - holdersLength, 0),\n          result = Array(rangeLength + rightLength),\n          isUncurried = !isCurried;\n\n      while (++argsIndex < rangeLength) {\n        result[argsIndex] = args[argsIndex];\n      }\n\n      var offset = argsIndex;\n\n      while (++rightIndex < rightLength) {\n        result[offset + rightIndex] = partials[rightIndex];\n      }\n\n      while (++holdersIndex < holdersLength) {\n        if (isUncurried || argsIndex < argsLength) {\n          result[offset + holders[holdersIndex]] = args[argsIndex++];\n        }\n      }\n\n      return result;\n    }\n    /**\n     * Copies the values of `source` to `array`.\n     *\n     * @private\n     * @param {Array} source The array to copy values from.\n     * @param {Array} [array=[]] The array to copy values to.\n     * @returns {Array} Returns `array`.\n     */\n\n\n    function copyArray(source, array) {\n      var index = -1,\n          length = source.length;\n      array || (array = Array(length));\n\n      while (++index < length) {\n        array[index] = source[index];\n      }\n\n      return array;\n    }\n    /**\n     * Copies properties of `source` to `object`.\n     *\n     * @private\n     * @param {Object} source The object to copy properties from.\n     * @param {Array} props The property identifiers to copy.\n     * @param {Object} [object={}] The object to copy properties to.\n     * @param {Function} [customizer] The function to customize copied values.\n     * @returns {Object} Returns `object`.\n     */\n\n\n    function copyObject(source, props, object, customizer) {\n      var isNew = !object;\n      object || (object = {});\n      var index = -1,\n          length = props.length;\n\n      while (++index < length) {\n        var key = props[index];\n        var newValue = customizer ? customizer(object[key], source[key], key, object, source) : undefined;\n\n        if (newValue === undefined) {\n          newValue = source[key];\n        }\n\n        if (isNew) {\n          baseAssignValue(object, key, newValue);\n        } else {\n          assignValue(object, key, newValue);\n        }\n      }\n\n      return object;\n    }\n    /**\n     * Copies own symbols of `source` to `object`.\n     *\n     * @private\n     * @param {Object} source The object to copy symbols from.\n     * @param {Object} [object={}] The object to copy symbols to.\n     * @returns {Object} Returns `object`.\n     */\n\n\n    function copySymbols(source, object) {\n      return copyObject(source, getSymbols(source), object);\n    }\n    /**\n     * Copies own and inherited symbols of `source` to `object`.\n     *\n     * @private\n     * @param {Object} source The object to copy symbols from.\n     * @param {Object} [object={}] The object to copy symbols to.\n     * @returns {Object} Returns `object`.\n     */\n\n\n    function copySymbolsIn(source, object) {\n      return copyObject(source, getSymbolsIn(source), object);\n    }\n    /**\n     * Creates a function like `_.groupBy`.\n     *\n     * @private\n     * @param {Function} setter The function to set accumulator values.\n     * @param {Function} [initializer] The accumulator object initializer.\n     * @returns {Function} Returns the new aggregator function.\n     */\n\n\n    function createAggregator(setter, initializer) {\n      return function (collection, iteratee) {\n        var func = isArray(collection) ? arrayAggregator : baseAggregator,\n            accumulator = initializer ? initializer() : {};\n        return func(collection, setter, getIteratee(iteratee, 2), accumulator);\n      };\n    }\n    /**\n     * Creates a function like `_.assign`.\n     *\n     * @private\n     * @param {Function} assigner The function to assign values.\n     * @returns {Function} Returns the new assigner function.\n     */\n\n\n    function createAssigner(assigner) {\n      return baseRest(function (object, sources) {\n        var index = -1,\n            length = sources.length,\n            customizer = length > 1 ? sources[length - 1] : undefined,\n            guard = length > 2 ? sources[2] : undefined;\n        customizer = assigner.length > 3 && typeof customizer == 'function' ? (length--, customizer) : undefined;\n\n        if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n          customizer = length < 3 ? undefined : customizer;\n          length = 1;\n        }\n\n        object = Object(object);\n\n        while (++index < length) {\n          var source = sources[index];\n\n          if (source) {\n            assigner(object, source, index, customizer);\n          }\n        }\n\n        return object;\n      });\n    }\n    /**\n     * Creates a `baseEach` or `baseEachRight` function.\n     *\n     * @private\n     * @param {Function} eachFunc The function to iterate over a collection.\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Function} Returns the new base function.\n     */\n\n\n    function createBaseEach(eachFunc, fromRight) {\n      return function (collection, iteratee) {\n        if (collection == null) {\n          return collection;\n        }\n\n        if (!isArrayLike(collection)) {\n          return eachFunc(collection, iteratee);\n        }\n\n        var length = collection.length,\n            index = fromRight ? length : -1,\n            iterable = Object(collection);\n\n        while (fromRight ? index-- : ++index < length) {\n          if (iteratee(iterable[index], index, iterable) === false) {\n            break;\n          }\n        }\n\n        return collection;\n      };\n    }\n    /**\n     * Creates a base function for methods like `_.forIn` and `_.forOwn`.\n     *\n     * @private\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Function} Returns the new base function.\n     */\n\n\n    function createBaseFor(fromRight) {\n      return function (object, iteratee, keysFunc) {\n        var index = -1,\n            iterable = Object(object),\n            props = keysFunc(object),\n            length = props.length;\n\n        while (length--) {\n          var key = props[fromRight ? length : ++index];\n\n          if (iteratee(iterable[key], key, iterable) === false) {\n            break;\n          }\n        }\n\n        return object;\n      };\n    }\n    /**\n     * Creates a function that wraps `func` to invoke it with the optional `this`\n     * binding of `thisArg`.\n     *\n     * @private\n     * @param {Function} func The function to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {*} [thisArg] The `this` binding of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n\n\n    function createBind(func, bitmask, thisArg) {\n      var isBind = bitmask & WRAP_BIND_FLAG,\n          Ctor = createCtor(func);\n\n      function wrapper() {\n        var fn = this && this !== root && this instanceof wrapper ? Ctor : func;\n        return fn.apply(isBind ? thisArg : this, arguments);\n      }\n\n      return wrapper;\n    }\n    /**\n     * Creates a function like `_.lowerFirst`.\n     *\n     * @private\n     * @param {string} methodName The name of the `String` case method to use.\n     * @returns {Function} Returns the new case function.\n     */\n\n\n    function createCaseFirst(methodName) {\n      return function (string) {\n        string = toString(string);\n        var strSymbols = hasUnicode(string) ? stringToArray(string) : undefined;\n        var chr = strSymbols ? strSymbols[0] : string.charAt(0);\n        var trailing = strSymbols ? castSlice(strSymbols, 1).join('') : string.slice(1);\n        return chr[methodName]() + trailing;\n      };\n    }\n    /**\n     * Creates a function like `_.camelCase`.\n     *\n     * @private\n     * @param {Function} callback The function to combine each word.\n     * @returns {Function} Returns the new compounder function.\n     */\n\n\n    function createCompounder(callback) {\n      return function (string) {\n        return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');\n      };\n    }\n    /**\n     * Creates a function that produces an instance of `Ctor` regardless of\n     * whether it was invoked as part of a `new` expression or by `call` or `apply`.\n     *\n     * @private\n     * @param {Function} Ctor The constructor to wrap.\n     * @returns {Function} Returns the new wrapped function.\n     */\n\n\n    function createCtor(Ctor) {\n      return function () {\n        // Use a `switch` statement to work with class constructors. See\n        // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist\n        // for more details.\n        var args = arguments;\n\n        switch (args.length) {\n          case 0:\n            return new Ctor();\n\n          case 1:\n            return new Ctor(args[0]);\n\n          case 2:\n            return new Ctor(args[0], args[1]);\n\n          case 3:\n            return new Ctor(args[0], args[1], args[2]);\n\n          case 4:\n            return new Ctor(args[0], args[1], args[2], args[3]);\n\n          case 5:\n            return new Ctor(args[0], args[1], args[2], args[3], args[4]);\n\n          case 6:\n            return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);\n\n          case 7:\n            return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);\n        }\n\n        var thisBinding = baseCreate(Ctor.prototype),\n            result = Ctor.apply(thisBinding, args); // Mimic the constructor's `return` behavior.\n        // See https://es5.github.io/#x13.2.2 for more details.\n\n        return isObject(result) ? result : thisBinding;\n      };\n    }\n    /**\n     * Creates a function that wraps `func` to enable currying.\n     *\n     * @private\n     * @param {Function} func The function to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {number} arity The arity of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n\n\n    function createCurry(func, bitmask, arity) {\n      var Ctor = createCtor(func);\n\n      function wrapper() {\n        var length = arguments.length,\n            args = Array(length),\n            index = length,\n            placeholder = getHolder(wrapper);\n\n        while (index--) {\n          args[index] = arguments[index];\n        }\n\n        var holders = length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder ? [] : replaceHolders(args, placeholder);\n        length -= holders.length;\n\n        if (length < arity) {\n          return createRecurry(func, bitmask, createHybrid, wrapper.placeholder, undefined, args, holders, undefined, undefined, arity - length);\n        }\n\n        var fn = this && this !== root && this instanceof wrapper ? Ctor : func;\n        return apply(fn, this, args);\n      }\n\n      return wrapper;\n    }\n    /**\n     * Creates a `_.find` or `_.findLast` function.\n     *\n     * @private\n     * @param {Function} findIndexFunc The function to find the collection index.\n     * @returns {Function} Returns the new find function.\n     */\n\n\n    function createFind(findIndexFunc) {\n      return function (collection, predicate, fromIndex) {\n        var iterable = Object(collection);\n\n        if (!isArrayLike(collection)) {\n          var iteratee = getIteratee(predicate, 3);\n          collection = keys(collection);\n\n          predicate = function predicate(key) {\n            return iteratee(iterable[key], key, iterable);\n          };\n        }\n\n        var index = findIndexFunc(collection, predicate, fromIndex);\n        return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;\n      };\n    }\n    /**\n     * Creates a `_.flow` or `_.flowRight` function.\n     *\n     * @private\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Function} Returns the new flow function.\n     */\n\n\n    function createFlow(fromRight) {\n      return flatRest(function (funcs) {\n        var length = funcs.length,\n            index = length,\n            prereq = LodashWrapper.prototype.thru;\n\n        if (fromRight) {\n          funcs.reverse();\n        }\n\n        while (index--) {\n          var func = funcs[index];\n\n          if (typeof func != 'function') {\n            throw new TypeError(FUNC_ERROR_TEXT);\n          }\n\n          if (prereq && !wrapper && getFuncName(func) == 'wrapper') {\n            var wrapper = new LodashWrapper([], true);\n          }\n        }\n\n        index = wrapper ? index : length;\n\n        while (++index < length) {\n          func = funcs[index];\n          var funcName = getFuncName(func),\n              data = funcName == 'wrapper' ? getData(func) : undefined;\n\n          if (data && isLaziable(data[0]) && data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) && !data[4].length && data[9] == 1) {\n            wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);\n          } else {\n            wrapper = func.length == 1 && isLaziable(func) ? wrapper[funcName]() : wrapper.thru(func);\n          }\n        }\n\n        return function () {\n          var args = arguments,\n              value = args[0];\n\n          if (wrapper && args.length == 1 && isArray(value)) {\n            return wrapper.plant(value).value();\n          }\n\n          var index = 0,\n              result = length ? funcs[index].apply(this, args) : value;\n\n          while (++index < length) {\n            result = funcs[index].call(this, result);\n          }\n\n          return result;\n        };\n      });\n    }\n    /**\n     * Creates a function that wraps `func` to invoke it with optional `this`\n     * binding of `thisArg`, partial application, and currying.\n     *\n     * @private\n     * @param {Function|string} func The function or method name to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {*} [thisArg] The `this` binding of `func`.\n     * @param {Array} [partials] The arguments to prepend to those provided to\n     *  the new function.\n     * @param {Array} [holders] The `partials` placeholder indexes.\n     * @param {Array} [partialsRight] The arguments to append to those provided\n     *  to the new function.\n     * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.\n     * @param {Array} [argPos] The argument positions of the new function.\n     * @param {number} [ary] The arity cap of `func`.\n     * @param {number} [arity] The arity of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n\n\n    function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {\n      var isAry = bitmask & WRAP_ARY_FLAG,\n          isBind = bitmask & WRAP_BIND_FLAG,\n          isBindKey = bitmask & WRAP_BIND_KEY_FLAG,\n          isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),\n          isFlip = bitmask & WRAP_FLIP_FLAG,\n          Ctor = isBindKey ? undefined : createCtor(func);\n\n      function wrapper() {\n        var length = arguments.length,\n            args = Array(length),\n            index = length;\n\n        while (index--) {\n          args[index] = arguments[index];\n        }\n\n        if (isCurried) {\n          var placeholder = getHolder(wrapper),\n              holdersCount = countHolders(args, placeholder);\n        }\n\n        if (partials) {\n          args = composeArgs(args, partials, holders, isCurried);\n        }\n\n        if (partialsRight) {\n          args = composeArgsRight(args, partialsRight, holdersRight, isCurried);\n        }\n\n        length -= holdersCount;\n\n        if (isCurried && length < arity) {\n          var newHolders = replaceHolders(args, placeholder);\n          return createRecurry(func, bitmask, createHybrid, wrapper.placeholder, thisArg, args, newHolders, argPos, ary, arity - length);\n        }\n\n        var thisBinding = isBind ? thisArg : this,\n            fn = isBindKey ? thisBinding[func] : func;\n        length = args.length;\n\n        if (argPos) {\n          args = reorder(args, argPos);\n        } else if (isFlip && length > 1) {\n          args.reverse();\n        }\n\n        if (isAry && ary < length) {\n          args.length = ary;\n        }\n\n        if (this && this !== root && this instanceof wrapper) {\n          fn = Ctor || createCtor(fn);\n        }\n\n        return fn.apply(thisBinding, args);\n      }\n\n      return wrapper;\n    }\n    /**\n     * Creates a function like `_.invertBy`.\n     *\n     * @private\n     * @param {Function} setter The function to set accumulator values.\n     * @param {Function} toIteratee The function to resolve iteratees.\n     * @returns {Function} Returns the new inverter function.\n     */\n\n\n    function createInverter(setter, toIteratee) {\n      return function (object, iteratee) {\n        return baseInverter(object, setter, toIteratee(iteratee), {});\n      };\n    }\n    /**\n     * Creates a function that performs a mathematical operation on two values.\n     *\n     * @private\n     * @param {Function} operator The function to perform the operation.\n     * @param {number} [defaultValue] The value used for `undefined` arguments.\n     * @returns {Function} Returns the new mathematical operation function.\n     */\n\n\n    function createMathOperation(operator, defaultValue) {\n      return function (value, other) {\n        var result;\n\n        if (value === undefined && other === undefined) {\n          return defaultValue;\n        }\n\n        if (value !== undefined) {\n          result = value;\n        }\n\n        if (other !== undefined) {\n          if (result === undefined) {\n            return other;\n          }\n\n          if (typeof value == 'string' || typeof other == 'string') {\n            value = baseToString(value);\n            other = baseToString(other);\n          } else {\n            value = baseToNumber(value);\n            other = baseToNumber(other);\n          }\n\n          result = operator(value, other);\n        }\n\n        return result;\n      };\n    }\n    /**\n     * Creates a function like `_.over`.\n     *\n     * @private\n     * @param {Function} arrayFunc The function to iterate over iteratees.\n     * @returns {Function} Returns the new over function.\n     */\n\n\n    function createOver(arrayFunc) {\n      return flatRest(function (iteratees) {\n        iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\n        return baseRest(function (args) {\n          var thisArg = this;\n          return arrayFunc(iteratees, function (iteratee) {\n            return apply(iteratee, thisArg, args);\n          });\n        });\n      });\n    }\n    /**\n     * Creates the padding for `string` based on `length`. The `chars` string\n     * is truncated if the number of characters exceeds `length`.\n     *\n     * @private\n     * @param {number} length The padding length.\n     * @param {string} [chars=' '] The string used as padding.\n     * @returns {string} Returns the padding for `string`.\n     */\n\n\n    function createPadding(length, chars) {\n      chars = chars === undefined ? ' ' : baseToString(chars);\n      var charsLength = chars.length;\n\n      if (charsLength < 2) {\n        return charsLength ? baseRepeat(chars, length) : chars;\n      }\n\n      var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));\n      return hasUnicode(chars) ? castSlice(stringToArray(result), 0, length).join('') : result.slice(0, length);\n    }\n    /**\n     * Creates a function that wraps `func` to invoke it with the `this` binding\n     * of `thisArg` and `partials` prepended to the arguments it receives.\n     *\n     * @private\n     * @param {Function} func The function to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {*} thisArg The `this` binding of `func`.\n     * @param {Array} partials The arguments to prepend to those provided to\n     *  the new function.\n     * @returns {Function} Returns the new wrapped function.\n     */\n\n\n    function createPartial(func, bitmask, thisArg, partials) {\n      var isBind = bitmask & WRAP_BIND_FLAG,\n          Ctor = createCtor(func);\n\n      function wrapper() {\n        var argsIndex = -1,\n            argsLength = arguments.length,\n            leftIndex = -1,\n            leftLength = partials.length,\n            args = Array(leftLength + argsLength),\n            fn = this && this !== root && this instanceof wrapper ? Ctor : func;\n\n        while (++leftIndex < leftLength) {\n          args[leftIndex] = partials[leftIndex];\n        }\n\n        while (argsLength--) {\n          args[leftIndex++] = arguments[++argsIndex];\n        }\n\n        return apply(fn, isBind ? thisArg : this, args);\n      }\n\n      return wrapper;\n    }\n    /**\n     * Creates a `_.range` or `_.rangeRight` function.\n     *\n     * @private\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Function} Returns the new range function.\n     */\n\n\n    function createRange(fromRight) {\n      return function (start, end, step) {\n        if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {\n          end = step = undefined;\n        } // Ensure the sign of `-0` is preserved.\n\n\n        start = toFinite(start);\n\n        if (end === undefined) {\n          end = start;\n          start = 0;\n        } else {\n          end = toFinite(end);\n        }\n\n        step = step === undefined ? start < end ? 1 : -1 : toFinite(step);\n        return baseRange(start, end, step, fromRight);\n      };\n    }\n    /**\n     * Creates a function that performs a relational operation on two values.\n     *\n     * @private\n     * @param {Function} operator The function to perform the operation.\n     * @returns {Function} Returns the new relational operation function.\n     */\n\n\n    function createRelationalOperation(operator) {\n      return function (value, other) {\n        if (!(typeof value == 'string' && typeof other == 'string')) {\n          value = toNumber(value);\n          other = toNumber(other);\n        }\n\n        return operator(value, other);\n      };\n    }\n    /**\n     * Creates a function that wraps `func` to continue currying.\n     *\n     * @private\n     * @param {Function} func The function to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {Function} wrapFunc The function to create the `func` wrapper.\n     * @param {*} placeholder The placeholder value.\n     * @param {*} [thisArg] The `this` binding of `func`.\n     * @param {Array} [partials] The arguments to prepend to those provided to\n     *  the new function.\n     * @param {Array} [holders] The `partials` placeholder indexes.\n     * @param {Array} [argPos] The argument positions of the new function.\n     * @param {number} [ary] The arity cap of `func`.\n     * @param {number} [arity] The arity of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n\n\n    function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {\n      var isCurry = bitmask & WRAP_CURRY_FLAG,\n          newHolders = isCurry ? holders : undefined,\n          newHoldersRight = isCurry ? undefined : holders,\n          newPartials = isCurry ? partials : undefined,\n          newPartialsRight = isCurry ? undefined : partials;\n      bitmask |= isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG;\n      bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);\n\n      if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {\n        bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);\n      }\n\n      var newData = [func, bitmask, thisArg, newPartials, newHolders, newPartialsRight, newHoldersRight, argPos, ary, arity];\n      var result = wrapFunc.apply(undefined, newData);\n\n      if (isLaziable(func)) {\n        setData(result, newData);\n      }\n\n      result.placeholder = placeholder;\n      return setWrapToString(result, func, bitmask);\n    }\n    /**\n     * Creates a function like `_.round`.\n     *\n     * @private\n     * @param {string} methodName The name of the `Math` method to use when rounding.\n     * @returns {Function} Returns the new round function.\n     */\n\n\n    function createRound(methodName) {\n      var func = Math[methodName];\n      return function (number, precision) {\n        number = toNumber(number);\n        precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);\n\n        if (precision && nativeIsFinite(number)) {\n          // Shift with exponential notation to avoid floating-point issues.\n          // See [MDN](https://mdn.io/round#Examples) for more details.\n          var pair = (toString(number) + 'e').split('e'),\n              value = func(pair[0] + 'e' + (+pair[1] + precision));\n          pair = (toString(value) + 'e').split('e');\n          return +(pair[0] + 'e' + (+pair[1] - precision));\n        }\n\n        return func(number);\n      };\n    }\n    /**\n     * Creates a set object of `values`.\n     *\n     * @private\n     * @param {Array} values The values to add to the set.\n     * @returns {Object} Returns the new set.\n     */\n\n\n    var createSet = !(Set && 1 / setToArray(new Set([, -0]))[1] == INFINITY) ? noop : function (values) {\n      return new Set(values);\n    };\n    /**\n     * Creates a `_.toPairs` or `_.toPairsIn` function.\n     *\n     * @private\n     * @param {Function} keysFunc The function to get the keys of a given object.\n     * @returns {Function} Returns the new pairs function.\n     */\n\n    function createToPairs(keysFunc) {\n      return function (object) {\n        var tag = getTag(object);\n\n        if (tag == mapTag) {\n          return mapToArray(object);\n        }\n\n        if (tag == setTag) {\n          return setToPairs(object);\n        }\n\n        return baseToPairs(object, keysFunc(object));\n      };\n    }\n    /**\n     * Creates a function that either curries or invokes `func` with optional\n     * `this` binding and partially applied arguments.\n     *\n     * @private\n     * @param {Function|string} func The function or method name to wrap.\n     * @param {number} bitmask The bitmask flags.\n     *    1 - `_.bind`\n     *    2 - `_.bindKey`\n     *    4 - `_.curry` or `_.curryRight` of a bound function\n     *    8 - `_.curry`\n     *   16 - `_.curryRight`\n     *   32 - `_.partial`\n     *   64 - `_.partialRight`\n     *  128 - `_.rearg`\n     *  256 - `_.ary`\n     *  512 - `_.flip`\n     * @param {*} [thisArg] The `this` binding of `func`.\n     * @param {Array} [partials] The arguments to be partially applied.\n     * @param {Array} [holders] The `partials` placeholder indexes.\n     * @param {Array} [argPos] The argument positions of the new function.\n     * @param {number} [ary] The arity cap of `func`.\n     * @param {number} [arity] The arity of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n\n\n    function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {\n      var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;\n\n      if (!isBindKey && typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n\n      var length = partials ? partials.length : 0;\n\n      if (!length) {\n        bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);\n        partials = holders = undefined;\n      }\n\n      ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);\n      arity = arity === undefined ? arity : toInteger(arity);\n      length -= holders ? holders.length : 0;\n\n      if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {\n        var partialsRight = partials,\n            holdersRight = holders;\n        partials = holders = undefined;\n      }\n\n      var data = isBindKey ? undefined : getData(func);\n      var newData = [func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity];\n\n      if (data) {\n        mergeData(newData, data);\n      }\n\n      func = newData[0];\n      bitmask = newData[1];\n      thisArg = newData[2];\n      partials = newData[3];\n      holders = newData[4];\n      arity = newData[9] = newData[9] === undefined ? isBindKey ? 0 : func.length : nativeMax(newData[9] - length, 0);\n\n      if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {\n        bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);\n      }\n\n      if (!bitmask || bitmask == WRAP_BIND_FLAG) {\n        var result = createBind(func, bitmask, thisArg);\n      } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {\n        result = createCurry(func, bitmask, arity);\n      } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {\n        result = createPartial(func, bitmask, thisArg, partials);\n      } else {\n        result = createHybrid.apply(undefined, newData);\n      }\n\n      var setter = data ? baseSetData : setData;\n      return setWrapToString(setter(result, newData), func, bitmask);\n    }\n    /**\n     * Used by `_.defaults` to customize its `_.assignIn` use to assign properties\n     * of source objects to the destination object for all destination properties\n     * that resolve to `undefined`.\n     *\n     * @private\n     * @param {*} objValue The destination value.\n     * @param {*} srcValue The source value.\n     * @param {string} key The key of the property to assign.\n     * @param {Object} object The parent object of `objValue`.\n     * @returns {*} Returns the value to assign.\n     */\n\n\n    function customDefaultsAssignIn(objValue, srcValue, key, object) {\n      if (objValue === undefined || eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key)) {\n        return srcValue;\n      }\n\n      return objValue;\n    }\n    /**\n     * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source\n     * objects into destination objects that are passed thru.\n     *\n     * @private\n     * @param {*} objValue The destination value.\n     * @param {*} srcValue The source value.\n     * @param {string} key The key of the property to merge.\n     * @param {Object} object The parent object of `objValue`.\n     * @param {Object} source The parent object of `srcValue`.\n     * @param {Object} [stack] Tracks traversed source values and their merged\n     *  counterparts.\n     * @returns {*} Returns the value to assign.\n     */\n\n\n    function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {\n      if (isObject(objValue) && isObject(srcValue)) {\n        // Recursively merge objects and arrays (susceptible to call stack limits).\n        stack.set(srcValue, objValue);\n        baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);\n        stack['delete'](srcValue);\n      }\n\n      return objValue;\n    }\n    /**\n     * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain\n     * objects.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @param {string} key The key of the property to inspect.\n     * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.\n     */\n\n\n    function customOmitClone(value) {\n      return isPlainObject(value) ? undefined : value;\n    }\n    /**\n     * A specialized version of `baseIsEqualDeep` for arrays with support for\n     * partial deep comparisons.\n     *\n     * @private\n     * @param {Array} array The array to compare.\n     * @param {Array} other The other array to compare.\n     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n     * @param {Function} customizer The function to customize comparisons.\n     * @param {Function} equalFunc The function to determine equivalents of values.\n     * @param {Object} stack Tracks traversed `array` and `other` objects.\n     * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.\n     */\n\n\n    function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {\n      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n          arrLength = array.length,\n          othLength = other.length;\n\n      if (arrLength != othLength && !(isPartial && othLength > arrLength)) {\n        return false;\n      } // Check that cyclic values are equal.\n\n\n      var arrStacked = stack.get(array);\n      var othStacked = stack.get(other);\n\n      if (arrStacked && othStacked) {\n        return arrStacked == other && othStacked == array;\n      }\n\n      var index = -1,\n          result = true,\n          seen = bitmask & COMPARE_UNORDERED_FLAG ? new SetCache() : undefined;\n      stack.set(array, other);\n      stack.set(other, array); // Ignore non-index properties.\n\n      while (++index < arrLength) {\n        var arrValue = array[index],\n            othValue = other[index];\n\n        if (customizer) {\n          var compared = isPartial ? customizer(othValue, arrValue, index, other, array, stack) : customizer(arrValue, othValue, index, array, other, stack);\n        }\n\n        if (compared !== undefined) {\n          if (compared) {\n            continue;\n          }\n\n          result = false;\n          break;\n        } // Recursively compare arrays (susceptible to call stack limits).\n\n\n        if (seen) {\n          if (!arraySome(other, function (othValue, othIndex) {\n            if (!cacheHas(seen, othIndex) && (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {\n              return seen.push(othIndex);\n            }\n          })) {\n            result = false;\n            break;\n          }\n        } else if (!(arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {\n          result = false;\n          break;\n        }\n      }\n\n      stack['delete'](array);\n      stack['delete'](other);\n      return result;\n    }\n    /**\n     * A specialized version of `baseIsEqualDeep` for comparing objects of\n     * the same `toStringTag`.\n     *\n     * **Note:** This function only supports comparing values with tags of\n     * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n     *\n     * @private\n     * @param {Object} object The object to compare.\n     * @param {Object} other The other object to compare.\n     * @param {string} tag The `toStringTag` of the objects to compare.\n     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n     * @param {Function} customizer The function to customize comparisons.\n     * @param {Function} equalFunc The function to determine equivalents of values.\n     * @param {Object} stack Tracks traversed `object` and `other` objects.\n     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n     */\n\n\n    function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {\n      switch (tag) {\n        case dataViewTag:\n          if (object.byteLength != other.byteLength || object.byteOffset != other.byteOffset) {\n            return false;\n          }\n\n          object = object.buffer;\n          other = other.buffer;\n\n        case arrayBufferTag:\n          if (object.byteLength != other.byteLength || !equalFunc(new Uint8Array(object), new Uint8Array(other))) {\n            return false;\n          }\n\n          return true;\n\n        case boolTag:\n        case dateTag:\n        case numberTag:\n          // Coerce booleans to `1` or `0` and dates to milliseconds.\n          // Invalid dates are coerced to `NaN`.\n          return eq(+object, +other);\n\n        case errorTag:\n          return object.name == other.name && object.message == other.message;\n\n        case regexpTag:\n        case stringTag:\n          // Coerce regexes to strings and treat strings, primitives and objects,\n          // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring\n          // for more details.\n          return object == other + '';\n\n        case mapTag:\n          var convert = mapToArray;\n\n        case setTag:\n          var isPartial = bitmask & COMPARE_PARTIAL_FLAG;\n          convert || (convert = setToArray);\n\n          if (object.size != other.size && !isPartial) {\n            return false;\n          } // Assume cyclic values are equal.\n\n\n          var stacked = stack.get(object);\n\n          if (stacked) {\n            return stacked == other;\n          }\n\n          bitmask |= COMPARE_UNORDERED_FLAG; // Recursively compare objects (susceptible to call stack limits).\n\n          stack.set(object, other);\n          var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);\n          stack['delete'](object);\n          return result;\n\n        case symbolTag:\n          if (symbolValueOf) {\n            return symbolValueOf.call(object) == symbolValueOf.call(other);\n          }\n\n      }\n\n      return false;\n    }\n    /**\n     * A specialized version of `baseIsEqualDeep` for objects with support for\n     * partial deep comparisons.\n     *\n     * @private\n     * @param {Object} object The object to compare.\n     * @param {Object} other The other object to compare.\n     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n     * @param {Function} customizer The function to customize comparisons.\n     * @param {Function} equalFunc The function to determine equivalents of values.\n     * @param {Object} stack Tracks traversed `object` and `other` objects.\n     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n     */\n\n\n    function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {\n      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n          objProps = getAllKeys(object),\n          objLength = objProps.length,\n          othProps = getAllKeys(other),\n          othLength = othProps.length;\n\n      if (objLength != othLength && !isPartial) {\n        return false;\n      }\n\n      var index = objLength;\n\n      while (index--) {\n        var key = objProps[index];\n\n        if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {\n          return false;\n        }\n      } // Check that cyclic values are equal.\n\n\n      var objStacked = stack.get(object);\n      var othStacked = stack.get(other);\n\n      if (objStacked && othStacked) {\n        return objStacked == other && othStacked == object;\n      }\n\n      var result = true;\n      stack.set(object, other);\n      stack.set(other, object);\n      var skipCtor = isPartial;\n\n      while (++index < objLength) {\n        key = objProps[index];\n        var objValue = object[key],\n            othValue = other[key];\n\n        if (customizer) {\n          var compared = isPartial ? customizer(othValue, objValue, key, other, object, stack) : customizer(objValue, othValue, key, object, other, stack);\n        } // Recursively compare objects (susceptible to call stack limits).\n\n\n        if (!(compared === undefined ? objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack) : compared)) {\n          result = false;\n          break;\n        }\n\n        skipCtor || (skipCtor = key == 'constructor');\n      }\n\n      if (result && !skipCtor) {\n        var objCtor = object.constructor,\n            othCtor = other.constructor; // Non `Object` object instances with different constructors are not equal.\n\n        if (objCtor != othCtor && 'constructor' in object && 'constructor' in other && !(typeof objCtor == 'function' && objCtor instanceof objCtor && typeof othCtor == 'function' && othCtor instanceof othCtor)) {\n          result = false;\n        }\n      }\n\n      stack['delete'](object);\n      stack['delete'](other);\n      return result;\n    }\n    /**\n     * A specialized version of `baseRest` which flattens the rest array.\n     *\n     * @private\n     * @param {Function} func The function to apply a rest parameter to.\n     * @returns {Function} Returns the new function.\n     */\n\n\n    function flatRest(func) {\n      return setToString(overRest(func, undefined, flatten), func + '');\n    }\n    /**\n     * Creates an array of own enumerable property names and symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names and symbols.\n     */\n\n\n    function getAllKeys(object) {\n      return baseGetAllKeys(object, keys, getSymbols);\n    }\n    /**\n     * Creates an array of own and inherited enumerable property names and\n     * symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names and symbols.\n     */\n\n\n    function getAllKeysIn(object) {\n      return baseGetAllKeys(object, keysIn, getSymbolsIn);\n    }\n    /**\n     * Gets metadata for `func`.\n     *\n     * @private\n     * @param {Function} func The function to query.\n     * @returns {*} Returns the metadata for `func`.\n     */\n\n\n    var getData = !metaMap ? noop : function (func) {\n      return metaMap.get(func);\n    };\n    /**\n     * Gets the name of `func`.\n     *\n     * @private\n     * @param {Function} func The function to query.\n     * @returns {string} Returns the function name.\n     */\n\n    function getFuncName(func) {\n      var result = func.name + '',\n          array = realNames[result],\n          length = hasOwnProperty.call(realNames, result) ? array.length : 0;\n\n      while (length--) {\n        var data = array[length],\n            otherFunc = data.func;\n\n        if (otherFunc == null || otherFunc == func) {\n          return data.name;\n        }\n      }\n\n      return result;\n    }\n    /**\n     * Gets the argument placeholder value for `func`.\n     *\n     * @private\n     * @param {Function} func The function to inspect.\n     * @returns {*} Returns the placeholder value.\n     */\n\n\n    function getHolder(func) {\n      var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;\n      return object.placeholder;\n    }\n    /**\n     * Gets the appropriate \"iteratee\" function. If `_.iteratee` is customized,\n     * this function returns the custom method, otherwise it returns `baseIteratee`.\n     * If arguments are provided, the chosen function is invoked with them and\n     * its result is returned.\n     *\n     * @private\n     * @param {*} [value] The value to convert to an iteratee.\n     * @param {number} [arity] The arity of the created iteratee.\n     * @returns {Function} Returns the chosen function or its result.\n     */\n\n\n    function getIteratee() {\n      var result = lodash.iteratee || iteratee;\n      result = result === iteratee ? baseIteratee : result;\n      return arguments.length ? result(arguments[0], arguments[1]) : result;\n    }\n    /**\n     * Gets the data for `map`.\n     *\n     * @private\n     * @param {Object} map The map to query.\n     * @param {string} key The reference key.\n     * @returns {*} Returns the map data.\n     */\n\n\n    function getMapData(map, key) {\n      var data = map.__data__;\n      return isKeyable(key) ? data[typeof key == 'string' ? 'string' : 'hash'] : data.map;\n    }\n    /**\n     * Gets the property names, values, and compare flags of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the match data of `object`.\n     */\n\n\n    function getMatchData(object) {\n      var result = keys(object),\n          length = result.length;\n\n      while (length--) {\n        var key = result[length],\n            value = object[key];\n        result[length] = [key, value, isStrictComparable(value)];\n      }\n\n      return result;\n    }\n    /**\n     * Gets the native function at `key` of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {string} key The key of the method to get.\n     * @returns {*} Returns the function if it's native, else `undefined`.\n     */\n\n\n    function getNative(object, key) {\n      var value = getValue(object, key);\n      return baseIsNative(value) ? value : undefined;\n    }\n    /**\n     * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.\n     *\n     * @private\n     * @param {*} value The value to query.\n     * @returns {string} Returns the raw `toStringTag`.\n     */\n\n\n    function getRawTag(value) {\n      var isOwn = hasOwnProperty.call(value, symToStringTag),\n          tag = value[symToStringTag];\n\n      try {\n        value[symToStringTag] = undefined;\n        var unmasked = true;\n      } catch (e) {}\n\n      var result = nativeObjectToString.call(value);\n\n      if (unmasked) {\n        if (isOwn) {\n          value[symToStringTag] = tag;\n        } else {\n          delete value[symToStringTag];\n        }\n      }\n\n      return result;\n    }\n    /**\n     * Creates an array of the own enumerable symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of symbols.\n     */\n\n\n    var getSymbols = !nativeGetSymbols ? stubArray : function (object) {\n      if (object == null) {\n        return [];\n      }\n\n      object = Object(object);\n      return arrayFilter(nativeGetSymbols(object), function (symbol) {\n        return propertyIsEnumerable.call(object, symbol);\n      });\n    };\n    /**\n     * Creates an array of the own and inherited enumerable symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of symbols.\n     */\n\n    var getSymbolsIn = !nativeGetSymbols ? stubArray : function (object) {\n      var result = [];\n\n      while (object) {\n        arrayPush(result, getSymbols(object));\n        object = getPrototype(object);\n      }\n\n      return result;\n    };\n    /**\n     * Gets the `toStringTag` of `value`.\n     *\n     * @private\n     * @param {*} value The value to query.\n     * @returns {string} Returns the `toStringTag`.\n     */\n\n    var getTag = baseGetTag; // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.\n\n    if (DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag || Map && getTag(new Map()) != mapTag || Promise && getTag(Promise.resolve()) != promiseTag || Set && getTag(new Set()) != setTag || WeakMap && getTag(new WeakMap()) != weakMapTag) {\n      getTag = function getTag(value) {\n        var result = baseGetTag(value),\n            Ctor = result == objectTag ? value.constructor : undefined,\n            ctorString = Ctor ? toSource(Ctor) : '';\n\n        if (ctorString) {\n          switch (ctorString) {\n            case dataViewCtorString:\n              return dataViewTag;\n\n            case mapCtorString:\n              return mapTag;\n\n            case promiseCtorString:\n              return promiseTag;\n\n            case setCtorString:\n              return setTag;\n\n            case weakMapCtorString:\n              return weakMapTag;\n          }\n        }\n\n        return result;\n      };\n    }\n    /**\n     * Gets the view, applying any `transforms` to the `start` and `end` positions.\n     *\n     * @private\n     * @param {number} start The start of the view.\n     * @param {number} end The end of the view.\n     * @param {Array} transforms The transformations to apply to the view.\n     * @returns {Object} Returns an object containing the `start` and `end`\n     *  positions of the view.\n     */\n\n\n    function getView(start, end, transforms) {\n      var index = -1,\n          length = transforms.length;\n\n      while (++index < length) {\n        var data = transforms[index],\n            size = data.size;\n\n        switch (data.type) {\n          case 'drop':\n            start += size;\n            break;\n\n          case 'dropRight':\n            end -= size;\n            break;\n\n          case 'take':\n            end = nativeMin(end, start + size);\n            break;\n\n          case 'takeRight':\n            start = nativeMax(start, end - size);\n            break;\n        }\n      }\n\n      return {\n        'start': start,\n        'end': end\n      };\n    }\n    /**\n     * Extracts wrapper details from the `source` body comment.\n     *\n     * @private\n     * @param {string} source The source to inspect.\n     * @returns {Array} Returns the wrapper details.\n     */\n\n\n    function getWrapDetails(source) {\n      var match = source.match(reWrapDetails);\n      return match ? match[1].split(reSplitDetails) : [];\n    }\n    /**\n     * Checks if `path` exists on `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path to check.\n     * @param {Function} hasFunc The function to check properties.\n     * @returns {boolean} Returns `true` if `path` exists, else `false`.\n     */\n\n\n    function hasPath(object, path, hasFunc) {\n      path = castPath(path, object);\n      var index = -1,\n          length = path.length,\n          result = false;\n\n      while (++index < length) {\n        var key = toKey(path[index]);\n\n        if (!(result = object != null && hasFunc(object, key))) {\n          break;\n        }\n\n        object = object[key];\n      }\n\n      if (result || ++index != length) {\n        return result;\n      }\n\n      length = object == null ? 0 : object.length;\n      return !!length && isLength(length) && isIndex(key, length) && (isArray(object) || isArguments(object));\n    }\n    /**\n     * Initializes an array clone.\n     *\n     * @private\n     * @param {Array} array The array to clone.\n     * @returns {Array} Returns the initialized clone.\n     */\n\n\n    function initCloneArray(array) {\n      var length = array.length,\n          result = new array.constructor(length); // Add properties assigned by `RegExp#exec`.\n\n      if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {\n        result.index = array.index;\n        result.input = array.input;\n      }\n\n      return result;\n    }\n    /**\n     * Initializes an object clone.\n     *\n     * @private\n     * @param {Object} object The object to clone.\n     * @returns {Object} Returns the initialized clone.\n     */\n\n\n    function initCloneObject(object) {\n      return typeof object.constructor == 'function' && !isPrototype(object) ? baseCreate(getPrototype(object)) : {};\n    }\n    /**\n     * Initializes an object clone based on its `toStringTag`.\n     *\n     * **Note:** This function only supports cloning values with tags of\n     * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.\n     *\n     * @private\n     * @param {Object} object The object to clone.\n     * @param {string} tag The `toStringTag` of the object to clone.\n     * @param {boolean} [isDeep] Specify a deep clone.\n     * @returns {Object} Returns the initialized clone.\n     */\n\n\n    function initCloneByTag(object, tag, isDeep) {\n      var Ctor = object.constructor;\n\n      switch (tag) {\n        case arrayBufferTag:\n          return cloneArrayBuffer(object);\n\n        case boolTag:\n        case dateTag:\n          return new Ctor(+object);\n\n        case dataViewTag:\n          return cloneDataView(object, isDeep);\n\n        case float32Tag:\n        case float64Tag:\n        case int8Tag:\n        case int16Tag:\n        case int32Tag:\n        case uint8Tag:\n        case uint8ClampedTag:\n        case uint16Tag:\n        case uint32Tag:\n          return cloneTypedArray(object, isDeep);\n\n        case mapTag:\n          return new Ctor();\n\n        case numberTag:\n        case stringTag:\n          return new Ctor(object);\n\n        case regexpTag:\n          return cloneRegExp(object);\n\n        case setTag:\n          return new Ctor();\n\n        case symbolTag:\n          return cloneSymbol(object);\n      }\n    }\n    /**\n     * Inserts wrapper `details` in a comment at the top of the `source` body.\n     *\n     * @private\n     * @param {string} source The source to modify.\n     * @returns {Array} details The details to insert.\n     * @returns {string} Returns the modified source.\n     */\n\n\n    function insertWrapDetails(source, details) {\n      var length = details.length;\n\n      if (!length) {\n        return source;\n      }\n\n      var lastIndex = length - 1;\n      details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];\n      details = details.join(length > 2 ? ', ' : ' ');\n      return source.replace(reWrapComment, '{\\n/* [wrapped with ' + details + '] */\\n');\n    }\n    /**\n     * Checks if `value` is a flattenable `arguments` object or array.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.\n     */\n\n\n    function isFlattenable(value) {\n      return isArray(value) || isArguments(value) || !!(spreadableSymbol && value && value[spreadableSymbol]);\n    }\n    /**\n     * Checks if `value` is a valid array-like index.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\n     * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\n     */\n\n\n    function isIndex(value, length) {\n      var type = _typeof(value);\n\n      length = length == null ? MAX_SAFE_INTEGER : length;\n      return !!length && (type == 'number' || type != 'symbol' && reIsUint.test(value)) && value > -1 && value % 1 == 0 && value < length;\n    }\n    /**\n     * Checks if the given arguments are from an iteratee call.\n     *\n     * @private\n     * @param {*} value The potential iteratee value argument.\n     * @param {*} index The potential iteratee index or key argument.\n     * @param {*} object The potential iteratee object argument.\n     * @returns {boolean} Returns `true` if the arguments are from an iteratee call,\n     *  else `false`.\n     */\n\n\n    function isIterateeCall(value, index, object) {\n      if (!isObject(object)) {\n        return false;\n      }\n\n      var type = _typeof(index);\n\n      if (type == 'number' ? isArrayLike(object) && isIndex(index, object.length) : type == 'string' && index in object) {\n        return eq(object[index], value);\n      }\n\n      return false;\n    }\n    /**\n     * Checks if `value` is a property name and not a property path.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @param {Object} [object] The object to query keys on.\n     * @returns {boolean} Returns `true` if `value` is a property name, else `false`.\n     */\n\n\n    function isKey(value, object) {\n      if (isArray(value)) {\n        return false;\n      }\n\n      var type = _typeof(value);\n\n      if (type == 'number' || type == 'symbol' || type == 'boolean' || value == null || isSymbol(value)) {\n        return true;\n      }\n\n      return reIsPlainProp.test(value) || !reIsDeepProp.test(value) || object != null && value in Object(object);\n    }\n    /**\n     * Checks if `value` is suitable for use as unique object key.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\n     */\n\n\n    function isKeyable(value) {\n      var type = _typeof(value);\n\n      return type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean' ? value !== '__proto__' : value === null;\n    }\n    /**\n     * Checks if `func` has a lazy counterpart.\n     *\n     * @private\n     * @param {Function} func The function to check.\n     * @returns {boolean} Returns `true` if `func` has a lazy counterpart,\n     *  else `false`.\n     */\n\n\n    function isLaziable(func) {\n      var funcName = getFuncName(func),\n          other = lodash[funcName];\n\n      if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {\n        return false;\n      }\n\n      if (func === other) {\n        return true;\n      }\n\n      var data = getData(other);\n      return !!data && func === data[0];\n    }\n    /**\n     * Checks if `func` has its source masked.\n     *\n     * @private\n     * @param {Function} func The function to check.\n     * @returns {boolean} Returns `true` if `func` is masked, else `false`.\n     */\n\n\n    function isMasked(func) {\n      return !!maskSrcKey && maskSrcKey in func;\n    }\n    /**\n     * Checks if `func` is capable of being masked.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `func` is maskable, else `false`.\n     */\n\n\n    var isMaskable = coreJsData ? isFunction : stubFalse;\n    /**\n     * Checks if `value` is likely a prototype object.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\n     */\n\n    function isPrototype(value) {\n      var Ctor = value && value.constructor,\n          proto = typeof Ctor == 'function' && Ctor.prototype || objectProto;\n      return value === proto;\n    }\n    /**\n     * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` if suitable for strict\n     *  equality comparisons, else `false`.\n     */\n\n\n    function isStrictComparable(value) {\n      return value === value && !isObject(value);\n    }\n    /**\n     * A specialized version of `matchesProperty` for source values suitable\n     * for strict equality comparisons, i.e. `===`.\n     *\n     * @private\n     * @param {string} key The key of the property to get.\n     * @param {*} srcValue The value to match.\n     * @returns {Function} Returns the new spec function.\n     */\n\n\n    function matchesStrictComparable(key, srcValue) {\n      return function (object) {\n        if (object == null) {\n          return false;\n        }\n\n        return object[key] === srcValue && (srcValue !== undefined || key in Object(object));\n      };\n    }\n    /**\n     * A specialized version of `_.memoize` which clears the memoized function's\n     * cache when it exceeds `MAX_MEMOIZE_SIZE`.\n     *\n     * @private\n     * @param {Function} func The function to have its output memoized.\n     * @returns {Function} Returns the new memoized function.\n     */\n\n\n    function memoizeCapped(func) {\n      var result = memoize(func, function (key) {\n        if (cache.size === MAX_MEMOIZE_SIZE) {\n          cache.clear();\n        }\n\n        return key;\n      });\n      var cache = result.cache;\n      return result;\n    }\n    /**\n     * Merges the function metadata of `source` into `data`.\n     *\n     * Merging metadata reduces the number of wrappers used to invoke a function.\n     * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`\n     * may be applied regardless of execution order. Methods like `_.ary` and\n     * `_.rearg` modify function arguments, making the order in which they are\n     * executed important, preventing the merging of metadata. However, we make\n     * an exception for a safe combined case where curried functions have `_.ary`\n     * and or `_.rearg` applied.\n     *\n     * @private\n     * @param {Array} data The destination metadata.\n     * @param {Array} source The source metadata.\n     * @returns {Array} Returns `data`.\n     */\n\n\n    function mergeData(data, source) {\n      var bitmask = data[1],\n          srcBitmask = source[1],\n          newBitmask = bitmask | srcBitmask,\n          isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);\n      var isCombo = srcBitmask == WRAP_ARY_FLAG && bitmask == WRAP_CURRY_FLAG || srcBitmask == WRAP_ARY_FLAG && bitmask == WRAP_REARG_FLAG && data[7].length <= source[8] || srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG) && source[7].length <= source[8] && bitmask == WRAP_CURRY_FLAG; // Exit early if metadata can't be merged.\n\n      if (!(isCommon || isCombo)) {\n        return data;\n      } // Use source `thisArg` if available.\n\n\n      if (srcBitmask & WRAP_BIND_FLAG) {\n        data[2] = source[2]; // Set when currying a bound function.\n\n        newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;\n      } // Compose partial arguments.\n\n\n      var value = source[3];\n\n      if (value) {\n        var partials = data[3];\n        data[3] = partials ? composeArgs(partials, value, source[4]) : value;\n        data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];\n      } // Compose partial right arguments.\n\n\n      value = source[5];\n\n      if (value) {\n        partials = data[5];\n        data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;\n        data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];\n      } // Use source `argPos` if available.\n\n\n      value = source[7];\n\n      if (value) {\n        data[7] = value;\n      } // Use source `ary` if it's smaller.\n\n\n      if (srcBitmask & WRAP_ARY_FLAG) {\n        data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);\n      } // Use source `arity` if one is not provided.\n\n\n      if (data[9] == null) {\n        data[9] = source[9];\n      } // Use source `func` and merge bitmasks.\n\n\n      data[0] = source[0];\n      data[1] = newBitmask;\n      return data;\n    }\n    /**\n     * This function is like\n     * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n     * except that it includes inherited enumerable properties.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     */\n\n\n    function nativeKeysIn(object) {\n      var result = [];\n\n      if (object != null) {\n        for (var key in Object(object)) {\n          result.push(key);\n        }\n      }\n\n      return result;\n    }\n    /**\n     * Converts `value` to a string using `Object.prototype.toString`.\n     *\n     * @private\n     * @param {*} value The value to convert.\n     * @returns {string} Returns the converted string.\n     */\n\n\n    function objectToString(value) {\n      return nativeObjectToString.call(value);\n    }\n    /**\n     * A specialized version of `baseRest` which transforms the rest array.\n     *\n     * @private\n     * @param {Function} func The function to apply a rest parameter to.\n     * @param {number} [start=func.length-1] The start position of the rest parameter.\n     * @param {Function} transform The rest array transform.\n     * @returns {Function} Returns the new function.\n     */\n\n\n    function overRest(func, start, transform) {\n      start = nativeMax(start === undefined ? func.length - 1 : start, 0);\n      return function () {\n        var args = arguments,\n            index = -1,\n            length = nativeMax(args.length - start, 0),\n            array = Array(length);\n\n        while (++index < length) {\n          array[index] = args[start + index];\n        }\n\n        index = -1;\n        var otherArgs = Array(start + 1);\n\n        while (++index < start) {\n          otherArgs[index] = args[index];\n        }\n\n        otherArgs[start] = transform(array);\n        return apply(func, this, otherArgs);\n      };\n    }\n    /**\n     * Gets the parent value at `path` of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Array} path The path to get the parent value of.\n     * @returns {*} Returns the parent value.\n     */\n\n\n    function parent(object, path) {\n      return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));\n    }\n    /**\n     * Reorder `array` according to the specified indexes where the element at\n     * the first index is assigned as the first element, the element at\n     * the second index is assigned as the second element, and so on.\n     *\n     * @private\n     * @param {Array} array The array to reorder.\n     * @param {Array} indexes The arranged array indexes.\n     * @returns {Array} Returns `array`.\n     */\n\n\n    function reorder(array, indexes) {\n      var arrLength = array.length,\n          length = nativeMin(indexes.length, arrLength),\n          oldArray = copyArray(array);\n\n      while (length--) {\n        var index = indexes[length];\n        array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;\n      }\n\n      return array;\n    }\n    /**\n     * Gets the value at `key`, unless `key` is \"__proto__\" or \"constructor\".\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {string} key The key of the property to get.\n     * @returns {*} Returns the property value.\n     */\n\n\n    function safeGet(object, key) {\n      if (key === 'constructor' && typeof object[key] === 'function') {\n        return;\n      }\n\n      if (key == '__proto__') {\n        return;\n      }\n\n      return object[key];\n    }\n    /**\n     * Sets metadata for `func`.\n     *\n     * **Note:** If this function becomes hot, i.e. is invoked a lot in a short\n     * period of time, it will trip its breaker and transition to an identity\n     * function to avoid garbage collection pauses in V8. See\n     * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)\n     * for more details.\n     *\n     * @private\n     * @param {Function} func The function to associate metadata with.\n     * @param {*} data The metadata.\n     * @returns {Function} Returns `func`.\n     */\n\n\n    var setData = shortOut(baseSetData);\n    /**\n     * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).\n     *\n     * @private\n     * @param {Function} func The function to delay.\n     * @param {number} wait The number of milliseconds to delay invocation.\n     * @returns {number|Object} Returns the timer id or timeout object.\n     */\n\n    var setTimeout = ctxSetTimeout || function (func, wait) {\n      return root.setTimeout(func, wait);\n    };\n    /**\n     * Sets the `toString` method of `func` to return `string`.\n     *\n     * @private\n     * @param {Function} func The function to modify.\n     * @param {Function} string The `toString` result.\n     * @returns {Function} Returns `func`.\n     */\n\n\n    var setToString = shortOut(baseSetToString);\n    /**\n     * Sets the `toString` method of `wrapper` to mimic the source of `reference`\n     * with wrapper details in a comment at the top of the source body.\n     *\n     * @private\n     * @param {Function} wrapper The function to modify.\n     * @param {Function} reference The reference function.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @returns {Function} Returns `wrapper`.\n     */\n\n    function setWrapToString(wrapper, reference, bitmask) {\n      var source = reference + '';\n      return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));\n    }\n    /**\n     * Creates a function that'll short out and invoke `identity` instead\n     * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`\n     * milliseconds.\n     *\n     * @private\n     * @param {Function} func The function to restrict.\n     * @returns {Function} Returns the new shortable function.\n     */\n\n\n    function shortOut(func) {\n      var count = 0,\n          lastCalled = 0;\n      return function () {\n        var stamp = nativeNow(),\n            remaining = HOT_SPAN - (stamp - lastCalled);\n        lastCalled = stamp;\n\n        if (remaining > 0) {\n          if (++count >= HOT_COUNT) {\n            return arguments[0];\n          }\n        } else {\n          count = 0;\n        }\n\n        return func.apply(undefined, arguments);\n      };\n    }\n    /**\n     * A specialized version of `_.shuffle` which mutates and sets the size of `array`.\n     *\n     * @private\n     * @param {Array} array The array to shuffle.\n     * @param {number} [size=array.length] The size of `array`.\n     * @returns {Array} Returns `array`.\n     */\n\n\n    function shuffleSelf(array, size) {\n      var index = -1,\n          length = array.length,\n          lastIndex = length - 1;\n      size = size === undefined ? length : size;\n\n      while (++index < size) {\n        var rand = baseRandom(index, lastIndex),\n            value = array[rand];\n        array[rand] = array[index];\n        array[index] = value;\n      }\n\n      array.length = size;\n      return array;\n    }\n    /**\n     * Converts `string` to a property path array.\n     *\n     * @private\n     * @param {string} string The string to convert.\n     * @returns {Array} Returns the property path array.\n     */\n\n\n    var stringToPath = memoizeCapped(function (string) {\n      var result = [];\n\n      if (string.charCodeAt(0) === 46\n      /* . */\n      ) {\n        result.push('');\n      }\n\n      string.replace(rePropName, function (match, number, quote, subString) {\n        result.push(quote ? subString.replace(reEscapeChar, '$1') : number || match);\n      });\n      return result;\n    });\n    /**\n     * Converts `value` to a string key if it's not a string or symbol.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @returns {string|symbol} Returns the key.\n     */\n\n    function toKey(value) {\n      if (typeof value == 'string' || isSymbol(value)) {\n        return value;\n      }\n\n      var result = value + '';\n      return result == '0' && 1 / value == -INFINITY ? '-0' : result;\n    }\n    /**\n     * Converts `func` to its source code.\n     *\n     * @private\n     * @param {Function} func The function to convert.\n     * @returns {string} Returns the source code.\n     */\n\n\n    function toSource(func) {\n      if (func != null) {\n        try {\n          return funcToString.call(func);\n        } catch (e) {}\n\n        try {\n          return func + '';\n        } catch (e) {}\n      }\n\n      return '';\n    }\n    /**\n     * Updates wrapper `details` based on `bitmask` flags.\n     *\n     * @private\n     * @returns {Array} details The details to modify.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @returns {Array} Returns `details`.\n     */\n\n\n    function updateWrapDetails(details, bitmask) {\n      arrayEach(wrapFlags, function (pair) {\n        var value = '_.' + pair[0];\n\n        if (bitmask & pair[1] && !arrayIncludes(details, value)) {\n          details.push(value);\n        }\n      });\n      return details.sort();\n    }\n    /**\n     * Creates a clone of `wrapper`.\n     *\n     * @private\n     * @param {Object} wrapper The wrapper to clone.\n     * @returns {Object} Returns the cloned wrapper.\n     */\n\n\n    function wrapperClone(wrapper) {\n      if (wrapper instanceof LazyWrapper) {\n        return wrapper.clone();\n      }\n\n      var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);\n      result.__actions__ = copyArray(wrapper.__actions__);\n      result.__index__ = wrapper.__index__;\n      result.__values__ = wrapper.__values__;\n      return result;\n    }\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates an array of elements split into groups the length of `size`.\n     * If `array` can't be split evenly, the final chunk will be the remaining\n     * elements.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to process.\n     * @param {number} [size=1] The length of each chunk\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the new array of chunks.\n     * @example\n     *\n     * _.chunk(['a', 'b', 'c', 'd'], 2);\n     * // => [['a', 'b'], ['c', 'd']]\n     *\n     * _.chunk(['a', 'b', 'c', 'd'], 3);\n     * // => [['a', 'b', 'c'], ['d']]\n     */\n\n\n    function chunk(array, size, guard) {\n      if (guard ? isIterateeCall(array, size, guard) : size === undefined) {\n        size = 1;\n      } else {\n        size = nativeMax(toInteger(size), 0);\n      }\n\n      var length = array == null ? 0 : array.length;\n\n      if (!length || size < 1) {\n        return [];\n      }\n\n      var index = 0,\n          resIndex = 0,\n          result = Array(nativeCeil(length / size));\n\n      while (index < length) {\n        result[resIndex++] = baseSlice(array, index, index += size);\n      }\n\n      return result;\n    }\n    /**\n     * Creates an array with all falsey values removed. The values `false`, `null`,\n     * `0`, `\"\"`, `undefined`, and `NaN` are falsey.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to compact.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * _.compact([0, 1, false, 2, '', 3]);\n     * // => [1, 2, 3]\n     */\n\n\n    function compact(array) {\n      var index = -1,\n          length = array == null ? 0 : array.length,\n          resIndex = 0,\n          result = [];\n\n      while (++index < length) {\n        var value = array[index];\n\n        if (value) {\n          result[resIndex++] = value;\n        }\n      }\n\n      return result;\n    }\n    /**\n     * Creates a new array concatenating `array` with any additional arrays\n     * and/or values.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to concatenate.\n     * @param {...*} [values] The values to concatenate.\n     * @returns {Array} Returns the new concatenated array.\n     * @example\n     *\n     * var array = [1];\n     * var other = _.concat(array, 2, [3], [[4]]);\n     *\n     * console.log(other);\n     * // => [1, 2, 3, [4]]\n     *\n     * console.log(array);\n     * // => [1]\n     */\n\n\n    function concat() {\n      var length = arguments.length;\n\n      if (!length) {\n        return [];\n      }\n\n      var args = Array(length - 1),\n          array = arguments[0],\n          index = length;\n\n      while (index--) {\n        args[index - 1] = arguments[index];\n      }\n\n      return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));\n    }\n    /**\n     * Creates an array of `array` values not included in the other given arrays\n     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons. The order and references of result values are\n     * determined by the first array.\n     *\n     * **Note:** Unlike `_.pullAll`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {...Array} [values] The values to exclude.\n     * @returns {Array} Returns the new array of filtered values.\n     * @see _.without, _.xor\n     * @example\n     *\n     * _.difference([2, 1], [2, 3]);\n     * // => [1]\n     */\n\n\n    var difference = baseRest(function (array, values) {\n      return isArrayLikeObject(array) ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true)) : [];\n    });\n    /**\n     * This method is like `_.difference` except that it accepts `iteratee` which\n     * is invoked for each element of `array` and `values` to generate the criterion\n     * by which they're compared. The order and references of result values are\n     * determined by the first array. The iteratee is invoked with one argument:\n     * (value).\n     *\n     * **Note:** Unlike `_.pullAllBy`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {...Array} [values] The values to exclude.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n     * // => [1.2]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');\n     * // => [{ 'x': 2 }]\n     */\n\n    var differenceBy = baseRest(function (array, values) {\n      var iteratee = last(values);\n\n      if (isArrayLikeObject(iteratee)) {\n        iteratee = undefined;\n      }\n\n      return isArrayLikeObject(array) ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2)) : [];\n    });\n    /**\n     * This method is like `_.difference` except that it accepts `comparator`\n     * which is invoked to compare elements of `array` to `values`. The order and\n     * references of result values are determined by the first array. The comparator\n     * is invoked with two arguments: (arrVal, othVal).\n     *\n     * **Note:** Unlike `_.pullAllWith`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {...Array} [values] The values to exclude.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n     *\n     * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);\n     * // => [{ 'x': 2, 'y': 1 }]\n     */\n\n    var differenceWith = baseRest(function (array, values) {\n      var comparator = last(values);\n\n      if (isArrayLikeObject(comparator)) {\n        comparator = undefined;\n      }\n\n      return isArrayLikeObject(array) ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator) : [];\n    });\n    /**\n     * Creates a slice of `array` with `n` elements dropped from the beginning.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.5.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=1] The number of elements to drop.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.drop([1, 2, 3]);\n     * // => [2, 3]\n     *\n     * _.drop([1, 2, 3], 2);\n     * // => [3]\n     *\n     * _.drop([1, 2, 3], 5);\n     * // => []\n     *\n     * _.drop([1, 2, 3], 0);\n     * // => [1, 2, 3]\n     */\n\n    function drop(array, n, guard) {\n      var length = array == null ? 0 : array.length;\n\n      if (!length) {\n        return [];\n      }\n\n      n = guard || n === undefined ? 1 : toInteger(n);\n      return baseSlice(array, n < 0 ? 0 : n, length);\n    }\n    /**\n     * Creates a slice of `array` with `n` elements dropped from the end.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=1] The number of elements to drop.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.dropRight([1, 2, 3]);\n     * // => [1, 2]\n     *\n     * _.dropRight([1, 2, 3], 2);\n     * // => [1]\n     *\n     * _.dropRight([1, 2, 3], 5);\n     * // => []\n     *\n     * _.dropRight([1, 2, 3], 0);\n     * // => [1, 2, 3]\n     */\n\n\n    function dropRight(array, n, guard) {\n      var length = array == null ? 0 : array.length;\n\n      if (!length) {\n        return [];\n      }\n\n      n = guard || n === undefined ? 1 : toInteger(n);\n      n = length - n;\n      return baseSlice(array, 0, n < 0 ? 0 : n);\n    }\n    /**\n     * Creates a slice of `array` excluding elements dropped from the end.\n     * Elements are dropped until `predicate` returns falsey. The predicate is\n     * invoked with three arguments: (value, index, array).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': true },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': false }\n     * ];\n     *\n     * _.dropRightWhile(users, function(o) { return !o.active; });\n     * // => objects for ['barney']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });\n     * // => objects for ['barney', 'fred']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.dropRightWhile(users, ['active', false]);\n     * // => objects for ['barney']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.dropRightWhile(users, 'active');\n     * // => objects for ['barney', 'fred', 'pebbles']\n     */\n\n\n    function dropRightWhile(array, predicate) {\n      return array && array.length ? baseWhile(array, getIteratee(predicate, 3), true, true) : [];\n    }\n    /**\n     * Creates a slice of `array` excluding elements dropped from the beginning.\n     * Elements are dropped until `predicate` returns falsey. The predicate is\n     * invoked with three arguments: (value, index, array).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': false },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': true }\n     * ];\n     *\n     * _.dropWhile(users, function(o) { return !o.active; });\n     * // => objects for ['pebbles']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.dropWhile(users, { 'user': 'barney', 'active': false });\n     * // => objects for ['fred', 'pebbles']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.dropWhile(users, ['active', false]);\n     * // => objects for ['pebbles']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.dropWhile(users, 'active');\n     * // => objects for ['barney', 'fred', 'pebbles']\n     */\n\n\n    function dropWhile(array, predicate) {\n      return array && array.length ? baseWhile(array, getIteratee(predicate, 3), true) : [];\n    }\n    /**\n     * Fills elements of `array` with `value` from `start` up to, but not\n     * including, `end`.\n     *\n     * **Note:** This method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.2.0\n     * @category Array\n     * @param {Array} array The array to fill.\n     * @param {*} value The value to fill `array` with.\n     * @param {number} [start=0] The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = [1, 2, 3];\n     *\n     * _.fill(array, 'a');\n     * console.log(array);\n     * // => ['a', 'a', 'a']\n     *\n     * _.fill(Array(3), 2);\n     * // => [2, 2, 2]\n     *\n     * _.fill([4, 6, 8, 10], '*', 1, 3);\n     * // => [4, '*', '*', 10]\n     */\n\n\n    function fill(array, value, start, end) {\n      var length = array == null ? 0 : array.length;\n\n      if (!length) {\n        return [];\n      }\n\n      if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {\n        start = 0;\n        end = length;\n      }\n\n      return baseFill(array, value, start, end);\n    }\n    /**\n     * This method is like `_.find` except that it returns the index of the first\n     * element `predicate` returns truthy for instead of the element itself.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param {number} [fromIndex=0] The index to search from.\n     * @returns {number} Returns the index of the found element, else `-1`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': false },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': true }\n     * ];\n     *\n     * _.findIndex(users, function(o) { return o.user == 'barney'; });\n     * // => 0\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.findIndex(users, { 'user': 'fred', 'active': false });\n     * // => 1\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.findIndex(users, ['active', false]);\n     * // => 0\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.findIndex(users, 'active');\n     * // => 2\n     */\n\n\n    function findIndex(array, predicate, fromIndex) {\n      var length = array == null ? 0 : array.length;\n\n      if (!length) {\n        return -1;\n      }\n\n      var index = fromIndex == null ? 0 : toInteger(fromIndex);\n\n      if (index < 0) {\n        index = nativeMax(length + index, 0);\n      }\n\n      return baseFindIndex(array, getIteratee(predicate, 3), index);\n    }\n    /**\n     * This method is like `_.findIndex` except that it iterates over elements\n     * of `collection` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param {number} [fromIndex=array.length-1] The index to search from.\n     * @returns {number} Returns the index of the found element, else `-1`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': true },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': false }\n     * ];\n     *\n     * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });\n     * // => 2\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.findLastIndex(users, { 'user': 'barney', 'active': true });\n     * // => 0\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.findLastIndex(users, ['active', false]);\n     * // => 2\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.findLastIndex(users, 'active');\n     * // => 0\n     */\n\n\n    function findLastIndex(array, predicate, fromIndex) {\n      var length = array == null ? 0 : array.length;\n\n      if (!length) {\n        return -1;\n      }\n\n      var index = length - 1;\n\n      if (fromIndex !== undefined) {\n        index = toInteger(fromIndex);\n        index = fromIndex < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);\n      }\n\n      return baseFindIndex(array, getIteratee(predicate, 3), index, true);\n    }\n    /**\n     * Flattens `array` a single level deep.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to flatten.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * _.flatten([1, [2, [3, [4]], 5]]);\n     * // => [1, 2, [3, [4]], 5]\n     */\n\n\n    function flatten(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? baseFlatten(array, 1) : [];\n    }\n    /**\n     * Recursively flattens `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to flatten.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * _.flattenDeep([1, [2, [3, [4]], 5]]);\n     * // => [1, 2, 3, 4, 5]\n     */\n\n\n    function flattenDeep(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? baseFlatten(array, INFINITY) : [];\n    }\n    /**\n     * Recursively flatten `array` up to `depth` times.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.4.0\n     * @category Array\n     * @param {Array} array The array to flatten.\n     * @param {number} [depth=1] The maximum recursion depth.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * var array = [1, [2, [3, [4]], 5]];\n     *\n     * _.flattenDepth(array, 1);\n     * // => [1, 2, [3, [4]], 5]\n     *\n     * _.flattenDepth(array, 2);\n     * // => [1, 2, 3, [4], 5]\n     */\n\n\n    function flattenDepth(array, depth) {\n      var length = array == null ? 0 : array.length;\n\n      if (!length) {\n        return [];\n      }\n\n      depth = depth === undefined ? 1 : toInteger(depth);\n      return baseFlatten(array, depth);\n    }\n    /**\n     * The inverse of `_.toPairs`; this method returns an object composed\n     * from key-value `pairs`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} pairs The key-value pairs.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * _.fromPairs([['a', 1], ['b', 2]]);\n     * // => { 'a': 1, 'b': 2 }\n     */\n\n\n    function fromPairs(pairs) {\n      var index = -1,\n          length = pairs == null ? 0 : pairs.length,\n          result = {};\n\n      while (++index < length) {\n        var pair = pairs[index];\n        result[pair[0]] = pair[1];\n      }\n\n      return result;\n    }\n    /**\n     * Gets the first element of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @alias first\n     * @category Array\n     * @param {Array} array The array to query.\n     * @returns {*} Returns the first element of `array`.\n     * @example\n     *\n     * _.head([1, 2, 3]);\n     * // => 1\n     *\n     * _.head([]);\n     * // => undefined\n     */\n\n\n    function head(array) {\n      return array && array.length ? array[0] : undefined;\n    }\n    /**\n     * Gets the index at which the first occurrence of `value` is found in `array`\n     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons. If `fromIndex` is negative, it's used as the\n     * offset from the end of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {*} value The value to search for.\n     * @param {number} [fromIndex=0] The index to search from.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     * @example\n     *\n     * _.indexOf([1, 2, 1, 2], 2);\n     * // => 1\n     *\n     * // Search from the `fromIndex`.\n     * _.indexOf([1, 2, 1, 2], 2, 2);\n     * // => 3\n     */\n\n\n    function indexOf(array, value, fromIndex) {\n      var length = array == null ? 0 : array.length;\n\n      if (!length) {\n        return -1;\n      }\n\n      var index = fromIndex == null ? 0 : toInteger(fromIndex);\n\n      if (index < 0) {\n        index = nativeMax(length + index, 0);\n      }\n\n      return baseIndexOf(array, value, index);\n    }\n    /**\n     * Gets all but the last element of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.initial([1, 2, 3]);\n     * // => [1, 2]\n     */\n\n\n    function initial(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? baseSlice(array, 0, -1) : [];\n    }\n    /**\n     * Creates an array of unique values that are included in all given arrays\n     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons. The order and references of result values are\n     * determined by the first array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @returns {Array} Returns the new array of intersecting values.\n     * @example\n     *\n     * _.intersection([2, 1], [2, 3]);\n     * // => [2]\n     */\n\n\n    var intersection = baseRest(function (arrays) {\n      var mapped = arrayMap(arrays, castArrayLikeObject);\n      return mapped.length && mapped[0] === arrays[0] ? baseIntersection(mapped) : [];\n    });\n    /**\n     * This method is like `_.intersection` except that it accepts `iteratee`\n     * which is invoked for each element of each `arrays` to generate the criterion\n     * by which they're compared. The order and references of result values are\n     * determined by the first array. The iteratee is invoked with one argument:\n     * (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new array of intersecting values.\n     * @example\n     *\n     * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n     * // => [2.1]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n     * // => [{ 'x': 1 }]\n     */\n\n    var intersectionBy = baseRest(function (arrays) {\n      var iteratee = last(arrays),\n          mapped = arrayMap(arrays, castArrayLikeObject);\n\n      if (iteratee === last(mapped)) {\n        iteratee = undefined;\n      } else {\n        mapped.pop();\n      }\n\n      return mapped.length && mapped[0] === arrays[0] ? baseIntersection(mapped, getIteratee(iteratee, 2)) : [];\n    });\n    /**\n     * This method is like `_.intersection` except that it accepts `comparator`\n     * which is invoked to compare elements of `arrays`. The order and references\n     * of result values are determined by the first array. The comparator is\n     * invoked with two arguments: (arrVal, othVal).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of intersecting values.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n     *\n     * _.intersectionWith(objects, others, _.isEqual);\n     * // => [{ 'x': 1, 'y': 2 }]\n     */\n\n    var intersectionWith = baseRest(function (arrays) {\n      var comparator = last(arrays),\n          mapped = arrayMap(arrays, castArrayLikeObject);\n      comparator = typeof comparator == 'function' ? comparator : undefined;\n\n      if (comparator) {\n        mapped.pop();\n      }\n\n      return mapped.length && mapped[0] === arrays[0] ? baseIntersection(mapped, undefined, comparator) : [];\n    });\n    /**\n     * Converts all elements in `array` into a string separated by `separator`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to convert.\n     * @param {string} [separator=','] The element separator.\n     * @returns {string} Returns the joined string.\n     * @example\n     *\n     * _.join(['a', 'b', 'c'], '~');\n     * // => 'a~b~c'\n     */\n\n    function join(array, separator) {\n      return array == null ? '' : nativeJoin.call(array, separator);\n    }\n    /**\n     * Gets the last element of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @returns {*} Returns the last element of `array`.\n     * @example\n     *\n     * _.last([1, 2, 3]);\n     * // => 3\n     */\n\n\n    function last(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? array[length - 1] : undefined;\n    }\n    /**\n     * This method is like `_.indexOf` except that it iterates over elements of\n     * `array` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {*} value The value to search for.\n     * @param {number} [fromIndex=array.length-1] The index to search from.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     * @example\n     *\n     * _.lastIndexOf([1, 2, 1, 2], 2);\n     * // => 3\n     *\n     * // Search from the `fromIndex`.\n     * _.lastIndexOf([1, 2, 1, 2], 2, 2);\n     * // => 1\n     */\n\n\n    function lastIndexOf(array, value, fromIndex) {\n      var length = array == null ? 0 : array.length;\n\n      if (!length) {\n        return -1;\n      }\n\n      var index = length;\n\n      if (fromIndex !== undefined) {\n        index = toInteger(fromIndex);\n        index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);\n      }\n\n      return value === value ? strictLastIndexOf(array, value, index) : baseFindIndex(array, baseIsNaN, index, true);\n    }\n    /**\n     * Gets the element at index `n` of `array`. If `n` is negative, the nth\n     * element from the end is returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.11.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=0] The index of the element to return.\n     * @returns {*} Returns the nth element of `array`.\n     * @example\n     *\n     * var array = ['a', 'b', 'c', 'd'];\n     *\n     * _.nth(array, 1);\n     * // => 'b'\n     *\n     * _.nth(array, -2);\n     * // => 'c';\n     */\n\n\n    function nth(array, n) {\n      return array && array.length ? baseNth(array, toInteger(n)) : undefined;\n    }\n    /**\n     * Removes all given values from `array` using\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons.\n     *\n     * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`\n     * to remove elements from an array by predicate.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {...*} [values] The values to remove.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n     *\n     * _.pull(array, 'a', 'c');\n     * console.log(array);\n     * // => ['b', 'b']\n     */\n\n\n    var pull = baseRest(pullAll);\n    /**\n     * This method is like `_.pull` except that it accepts an array of values to remove.\n     *\n     * **Note:** Unlike `_.difference`, this method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {Array} values The values to remove.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n     *\n     * _.pullAll(array, ['a', 'c']);\n     * console.log(array);\n     * // => ['b', 'b']\n     */\n\n    function pullAll(array, values) {\n      return array && array.length && values && values.length ? basePullAll(array, values) : array;\n    }\n    /**\n     * This method is like `_.pullAll` except that it accepts `iteratee` which is\n     * invoked for each element of `array` and `values` to generate the criterion\n     * by which they're compared. The iteratee is invoked with one argument: (value).\n     *\n     * **Note:** Unlike `_.differenceBy`, this method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {Array} values The values to remove.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];\n     *\n     * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');\n     * console.log(array);\n     * // => [{ 'x': 2 }]\n     */\n\n\n    function pullAllBy(array, values, iteratee) {\n      return array && array.length && values && values.length ? basePullAll(array, values, getIteratee(iteratee, 2)) : array;\n    }\n    /**\n     * This method is like `_.pullAll` except that it accepts `comparator` which\n     * is invoked to compare elements of `array` to `values`. The comparator is\n     * invoked with two arguments: (arrVal, othVal).\n     *\n     * **Note:** Unlike `_.differenceWith`, this method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.6.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {Array} values The values to remove.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];\n     *\n     * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);\n     * console.log(array);\n     * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]\n     */\n\n\n    function pullAllWith(array, values, comparator) {\n      return array && array.length && values && values.length ? basePullAll(array, values, undefined, comparator) : array;\n    }\n    /**\n     * Removes elements from `array` corresponding to `indexes` and returns an\n     * array of removed elements.\n     *\n     * **Note:** Unlike `_.at`, this method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {...(number|number[])} [indexes] The indexes of elements to remove.\n     * @returns {Array} Returns the new array of removed elements.\n     * @example\n     *\n     * var array = ['a', 'b', 'c', 'd'];\n     * var pulled = _.pullAt(array, [1, 3]);\n     *\n     * console.log(array);\n     * // => ['a', 'c']\n     *\n     * console.log(pulled);\n     * // => ['b', 'd']\n     */\n\n\n    var pullAt = flatRest(function (array, indexes) {\n      var length = array == null ? 0 : array.length,\n          result = baseAt(array, indexes);\n      basePullAt(array, arrayMap(indexes, function (index) {\n        return isIndex(index, length) ? +index : index;\n      }).sort(compareAscending));\n      return result;\n    });\n    /**\n     * Removes all elements from `array` that `predicate` returns truthy for\n     * and returns an array of the removed elements. The predicate is invoked\n     * with three arguments: (value, index, array).\n     *\n     * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`\n     * to pull elements from an array by value.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new array of removed elements.\n     * @example\n     *\n     * var array = [1, 2, 3, 4];\n     * var evens = _.remove(array, function(n) {\n     *   return n % 2 == 0;\n     * });\n     *\n     * console.log(array);\n     * // => [1, 3]\n     *\n     * console.log(evens);\n     * // => [2, 4]\n     */\n\n    function remove(array, predicate) {\n      var result = [];\n\n      if (!(array && array.length)) {\n        return result;\n      }\n\n      var index = -1,\n          indexes = [],\n          length = array.length;\n      predicate = getIteratee(predicate, 3);\n\n      while (++index < length) {\n        var value = array[index];\n\n        if (predicate(value, index, array)) {\n          result.push(value);\n          indexes.push(index);\n        }\n      }\n\n      basePullAt(array, indexes);\n      return result;\n    }\n    /**\n     * Reverses `array` so that the first element becomes the last, the second\n     * element becomes the second to last, and so on.\n     *\n     * **Note:** This method mutates `array` and is based on\n     * [`Array#reverse`](https://mdn.io/Array/reverse).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = [1, 2, 3];\n     *\n     * _.reverse(array);\n     * // => [3, 2, 1]\n     *\n     * console.log(array);\n     * // => [3, 2, 1]\n     */\n\n\n    function reverse(array) {\n      return array == null ? array : nativeReverse.call(array);\n    }\n    /**\n     * Creates a slice of `array` from `start` up to, but not including, `end`.\n     *\n     * **Note:** This method is used instead of\n     * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are\n     * returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to slice.\n     * @param {number} [start=0] The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns the slice of `array`.\n     */\n\n\n    function slice(array, start, end) {\n      var length = array == null ? 0 : array.length;\n\n      if (!length) {\n        return [];\n      }\n\n      if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {\n        start = 0;\n        end = length;\n      } else {\n        start = start == null ? 0 : toInteger(start);\n        end = end === undefined ? length : toInteger(end);\n      }\n\n      return baseSlice(array, start, end);\n    }\n    /**\n     * Uses a binary search to determine the lowest index at which `value`\n     * should be inserted into `array` in order to maintain its sort order.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     * @example\n     *\n     * _.sortedIndex([30, 50], 40);\n     * // => 1\n     */\n\n\n    function sortedIndex(array, value) {\n      return baseSortedIndex(array, value);\n    }\n    /**\n     * This method is like `_.sortedIndex` except that it accepts `iteratee`\n     * which is invoked for `value` and each element of `array` to compute their\n     * sort ranking. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     * @example\n     *\n     * var objects = [{ 'x': 4 }, { 'x': 5 }];\n     *\n     * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n     * // => 0\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.sortedIndexBy(objects, { 'x': 4 }, 'x');\n     * // => 0\n     */\n\n\n    function sortedIndexBy(array, value, iteratee) {\n      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));\n    }\n    /**\n     * This method is like `_.indexOf` except that it performs a binary\n     * search on a sorted `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {*} value The value to search for.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     * @example\n     *\n     * _.sortedIndexOf([4, 5, 5, 5, 6], 5);\n     * // => 1\n     */\n\n\n    function sortedIndexOf(array, value) {\n      var length = array == null ? 0 : array.length;\n\n      if (length) {\n        var index = baseSortedIndex(array, value);\n\n        if (index < length && eq(array[index], value)) {\n          return index;\n        }\n      }\n\n      return -1;\n    }\n    /**\n     * This method is like `_.sortedIndex` except that it returns the highest\n     * index at which `value` should be inserted into `array` in order to\n     * maintain its sort order.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     * @example\n     *\n     * _.sortedLastIndex([4, 5, 5, 5, 6], 5);\n     * // => 4\n     */\n\n\n    function sortedLastIndex(array, value) {\n      return baseSortedIndex(array, value, true);\n    }\n    /**\n     * This method is like `_.sortedLastIndex` except that it accepts `iteratee`\n     * which is invoked for `value` and each element of `array` to compute their\n     * sort ranking. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     * @example\n     *\n     * var objects = [{ 'x': 4 }, { 'x': 5 }];\n     *\n     * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n     * // => 1\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');\n     * // => 1\n     */\n\n\n    function sortedLastIndexBy(array, value, iteratee) {\n      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);\n    }\n    /**\n     * This method is like `_.lastIndexOf` except that it performs a binary\n     * search on a sorted `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {*} value The value to search for.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     * @example\n     *\n     * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);\n     * // => 3\n     */\n\n\n    function sortedLastIndexOf(array, value) {\n      var length = array == null ? 0 : array.length;\n\n      if (length) {\n        var index = baseSortedIndex(array, value, true) - 1;\n\n        if (eq(array[index], value)) {\n          return index;\n        }\n      }\n\n      return -1;\n    }\n    /**\n     * This method is like `_.uniq` except that it's designed and optimized\n     * for sorted arrays.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * _.sortedUniq([1, 1, 2]);\n     * // => [1, 2]\n     */\n\n\n    function sortedUniq(array) {\n      return array && array.length ? baseSortedUniq(array) : [];\n    }\n    /**\n     * This method is like `_.uniqBy` except that it's designed and optimized\n     * for sorted arrays.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);\n     * // => [1.1, 2.3]\n     */\n\n\n    function sortedUniqBy(array, iteratee) {\n      return array && array.length ? baseSortedUniq(array, getIteratee(iteratee, 2)) : [];\n    }\n    /**\n     * Gets all but the first element of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.tail([1, 2, 3]);\n     * // => [2, 3]\n     */\n\n\n    function tail(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? baseSlice(array, 1, length) : [];\n    }\n    /**\n     * Creates a slice of `array` with `n` elements taken from the beginning.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=1] The number of elements to take.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.take([1, 2, 3]);\n     * // => [1]\n     *\n     * _.take([1, 2, 3], 2);\n     * // => [1, 2]\n     *\n     * _.take([1, 2, 3], 5);\n     * // => [1, 2, 3]\n     *\n     * _.take([1, 2, 3], 0);\n     * // => []\n     */\n\n\n    function take(array, n, guard) {\n      if (!(array && array.length)) {\n        return [];\n      }\n\n      n = guard || n === undefined ? 1 : toInteger(n);\n      return baseSlice(array, 0, n < 0 ? 0 : n);\n    }\n    /**\n     * Creates a slice of `array` with `n` elements taken from the end.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=1] The number of elements to take.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.takeRight([1, 2, 3]);\n     * // => [3]\n     *\n     * _.takeRight([1, 2, 3], 2);\n     * // => [2, 3]\n     *\n     * _.takeRight([1, 2, 3], 5);\n     * // => [1, 2, 3]\n     *\n     * _.takeRight([1, 2, 3], 0);\n     * // => []\n     */\n\n\n    function takeRight(array, n, guard) {\n      var length = array == null ? 0 : array.length;\n\n      if (!length) {\n        return [];\n      }\n\n      n = guard || n === undefined ? 1 : toInteger(n);\n      n = length - n;\n      return baseSlice(array, n < 0 ? 0 : n, length);\n    }\n    /**\n     * Creates a slice of `array` with elements taken from the end. Elements are\n     * taken until `predicate` returns falsey. The predicate is invoked with\n     * three arguments: (value, index, array).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': true },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': false }\n     * ];\n     *\n     * _.takeRightWhile(users, function(o) { return !o.active; });\n     * // => objects for ['fred', 'pebbles']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });\n     * // => objects for ['pebbles']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.takeRightWhile(users, ['active', false]);\n     * // => objects for ['fred', 'pebbles']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.takeRightWhile(users, 'active');\n     * // => []\n     */\n\n\n    function takeRightWhile(array, predicate) {\n      return array && array.length ? baseWhile(array, getIteratee(predicate, 3), false, true) : [];\n    }\n    /**\n     * Creates a slice of `array` with elements taken from the beginning. Elements\n     * are taken until `predicate` returns falsey. The predicate is invoked with\n     * three arguments: (value, index, array).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': false },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': true }\n     * ];\n     *\n     * _.takeWhile(users, function(o) { return !o.active; });\n     * // => objects for ['barney', 'fred']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.takeWhile(users, { 'user': 'barney', 'active': false });\n     * // => objects for ['barney']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.takeWhile(users, ['active', false]);\n     * // => objects for ['barney', 'fred']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.takeWhile(users, 'active');\n     * // => []\n     */\n\n\n    function takeWhile(array, predicate) {\n      return array && array.length ? baseWhile(array, getIteratee(predicate, 3)) : [];\n    }\n    /**\n     * Creates an array of unique values, in order, from all given arrays using\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @returns {Array} Returns the new array of combined values.\n     * @example\n     *\n     * _.union([2], [1, 2]);\n     * // => [2, 1]\n     */\n\n\n    var union = baseRest(function (arrays) {\n      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));\n    });\n    /**\n     * This method is like `_.union` except that it accepts `iteratee` which is\n     * invoked for each element of each `arrays` to generate the criterion by\n     * which uniqueness is computed. Result values are chosen from the first\n     * array in which the value occurs. The iteratee is invoked with one argument:\n     * (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new array of combined values.\n     * @example\n     *\n     * _.unionBy([2.1], [1.2, 2.3], Math.floor);\n     * // => [2.1, 1.2]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n     * // => [{ 'x': 1 }, { 'x': 2 }]\n     */\n\n    var unionBy = baseRest(function (arrays) {\n      var iteratee = last(arrays);\n\n      if (isArrayLikeObject(iteratee)) {\n        iteratee = undefined;\n      }\n\n      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));\n    });\n    /**\n     * This method is like `_.union` except that it accepts `comparator` which\n     * is invoked to compare elements of `arrays`. Result values are chosen from\n     * the first array in which the value occurs. The comparator is invoked\n     * with two arguments: (arrVal, othVal).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of combined values.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n     *\n     * _.unionWith(objects, others, _.isEqual);\n     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n     */\n\n    var unionWith = baseRest(function (arrays) {\n      var comparator = last(arrays);\n      comparator = typeof comparator == 'function' ? comparator : undefined;\n      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);\n    });\n    /**\n     * Creates a duplicate-free version of an array, using\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons, in which only the first occurrence of each element\n     * is kept. The order of result values is determined by the order they occur\n     * in the array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * _.uniq([2, 1, 2]);\n     * // => [2, 1]\n     */\n\n    function uniq(array) {\n      return array && array.length ? baseUniq(array) : [];\n    }\n    /**\n     * This method is like `_.uniq` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the criterion by which\n     * uniqueness is computed. The order of result values is determined by the\n     * order they occur in the array. The iteratee is invoked with one argument:\n     * (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * _.uniqBy([2.1, 1.2, 2.3], Math.floor);\n     * // => [2.1, 1.2]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');\n     * // => [{ 'x': 1 }, { 'x': 2 }]\n     */\n\n\n    function uniqBy(array, iteratee) {\n      return array && array.length ? baseUniq(array, getIteratee(iteratee, 2)) : [];\n    }\n    /**\n     * This method is like `_.uniq` except that it accepts `comparator` which\n     * is invoked to compare elements of `array`. The order of result values is\n     * determined by the order they occur in the array.The comparator is invoked\n     * with two arguments: (arrVal, othVal).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];\n     *\n     * _.uniqWith(objects, _.isEqual);\n     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]\n     */\n\n\n    function uniqWith(array, comparator) {\n      comparator = typeof comparator == 'function' ? comparator : undefined;\n      return array && array.length ? baseUniq(array, undefined, comparator) : [];\n    }\n    /**\n     * This method is like `_.zip` except that it accepts an array of grouped\n     * elements and creates an array regrouping the elements to their pre-zip\n     * configuration.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.2.0\n     * @category Array\n     * @param {Array} array The array of grouped elements to process.\n     * @returns {Array} Returns the new array of regrouped elements.\n     * @example\n     *\n     * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);\n     * // => [['a', 1, true], ['b', 2, false]]\n     *\n     * _.unzip(zipped);\n     * // => [['a', 'b'], [1, 2], [true, false]]\n     */\n\n\n    function unzip(array) {\n      if (!(array && array.length)) {\n        return [];\n      }\n\n      var length = 0;\n      array = arrayFilter(array, function (group) {\n        if (isArrayLikeObject(group)) {\n          length = nativeMax(group.length, length);\n          return true;\n        }\n      });\n      return baseTimes(length, function (index) {\n        return arrayMap(array, baseProperty(index));\n      });\n    }\n    /**\n     * This method is like `_.unzip` except that it accepts `iteratee` to specify\n     * how regrouped values should be combined. The iteratee is invoked with the\n     * elements of each group: (...group).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.8.0\n     * @category Array\n     * @param {Array} array The array of grouped elements to process.\n     * @param {Function} [iteratee=_.identity] The function to combine\n     *  regrouped values.\n     * @returns {Array} Returns the new array of regrouped elements.\n     * @example\n     *\n     * var zipped = _.zip([1, 2], [10, 20], [100, 200]);\n     * // => [[1, 10, 100], [2, 20, 200]]\n     *\n     * _.unzipWith(zipped, _.add);\n     * // => [3, 30, 300]\n     */\n\n\n    function unzipWith(array, iteratee) {\n      if (!(array && array.length)) {\n        return [];\n      }\n\n      var result = unzip(array);\n\n      if (iteratee == null) {\n        return result;\n      }\n\n      return arrayMap(result, function (group) {\n        return apply(iteratee, undefined, group);\n      });\n    }\n    /**\n     * Creates an array excluding all given values using\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons.\n     *\n     * **Note:** Unlike `_.pull`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {...*} [values] The values to exclude.\n     * @returns {Array} Returns the new array of filtered values.\n     * @see _.difference, _.xor\n     * @example\n     *\n     * _.without([2, 1, 2, 3], 1, 2);\n     * // => [3]\n     */\n\n\n    var without = baseRest(function (array, values) {\n      return isArrayLikeObject(array) ? baseDifference(array, values) : [];\n    });\n    /**\n     * Creates an array of unique values that is the\n     * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)\n     * of the given arrays. The order of result values is determined by the order\n     * they occur in the arrays.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @returns {Array} Returns the new array of filtered values.\n     * @see _.difference, _.without\n     * @example\n     *\n     * _.xor([2, 1], [2, 3]);\n     * // => [1, 3]\n     */\n\n    var xor = baseRest(function (arrays) {\n      return baseXor(arrayFilter(arrays, isArrayLikeObject));\n    });\n    /**\n     * This method is like `_.xor` except that it accepts `iteratee` which is\n     * invoked for each element of each `arrays` to generate the criterion by\n     * which by which they're compared. The order of result values is determined\n     * by the order they occur in the arrays. The iteratee is invoked with one\n     * argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n     * // => [1.2, 3.4]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n     * // => [{ 'x': 2 }]\n     */\n\n    var xorBy = baseRest(function (arrays) {\n      var iteratee = last(arrays);\n\n      if (isArrayLikeObject(iteratee)) {\n        iteratee = undefined;\n      }\n\n      return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));\n    });\n    /**\n     * This method is like `_.xor` except that it accepts `comparator` which is\n     * invoked to compare elements of `arrays`. The order of result values is\n     * determined by the order they occur in the arrays. The comparator is invoked\n     * with two arguments: (arrVal, othVal).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n     *\n     * _.xorWith(objects, others, _.isEqual);\n     * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n     */\n\n    var xorWith = baseRest(function (arrays) {\n      var comparator = last(arrays);\n      comparator = typeof comparator == 'function' ? comparator : undefined;\n      return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);\n    });\n    /**\n     * Creates an array of grouped elements, the first of which contains the\n     * first elements of the given arrays, the second of which contains the\n     * second elements of the given arrays, and so on.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to process.\n     * @returns {Array} Returns the new array of grouped elements.\n     * @example\n     *\n     * _.zip(['a', 'b'], [1, 2], [true, false]);\n     * // => [['a', 1, true], ['b', 2, false]]\n     */\n\n    var zip = baseRest(unzip);\n    /**\n     * This method is like `_.fromPairs` except that it accepts two arrays,\n     * one of property identifiers and one of corresponding values.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.4.0\n     * @category Array\n     * @param {Array} [props=[]] The property identifiers.\n     * @param {Array} [values=[]] The property values.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * _.zipObject(['a', 'b'], [1, 2]);\n     * // => { 'a': 1, 'b': 2 }\n     */\n\n    function zipObject(props, values) {\n      return baseZipObject(props || [], values || [], assignValue);\n    }\n    /**\n     * This method is like `_.zipObject` except that it supports property paths.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.1.0\n     * @category Array\n     * @param {Array} [props=[]] The property identifiers.\n     * @param {Array} [values=[]] The property values.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);\n     * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }\n     */\n\n\n    function zipObjectDeep(props, values) {\n      return baseZipObject(props || [], values || [], baseSet);\n    }\n    /**\n     * This method is like `_.zip` except that it accepts `iteratee` to specify\n     * how grouped values should be combined. The iteratee is invoked with the\n     * elements of each group: (...group).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.8.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to process.\n     * @param {Function} [iteratee=_.identity] The function to combine\n     *  grouped values.\n     * @returns {Array} Returns the new array of grouped elements.\n     * @example\n     *\n     * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {\n     *   return a + b + c;\n     * });\n     * // => [111, 222]\n     */\n\n\n    var zipWith = baseRest(function (arrays) {\n      var length = arrays.length,\n          iteratee = length > 1 ? arrays[length - 1] : undefined;\n      iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;\n      return unzipWith(arrays, iteratee);\n    });\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a `lodash` wrapper instance that wraps `value` with explicit method\n     * chain sequences enabled. The result of such sequences must be unwrapped\n     * with `_#value`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.3.0\n     * @category Seq\n     * @param {*} value The value to wrap.\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'age': 36 },\n     *   { 'user': 'fred',    'age': 40 },\n     *   { 'user': 'pebbles', 'age': 1 }\n     * ];\n     *\n     * var youngest = _\n     *   .chain(users)\n     *   .sortBy('age')\n     *   .map(function(o) {\n     *     return o.user + ' is ' + o.age;\n     *   })\n     *   .head()\n     *   .value();\n     * // => 'pebbles is 1'\n     */\n\n    function chain(value) {\n      var result = lodash(value);\n      result.__chain__ = true;\n      return result;\n    }\n    /**\n     * This method invokes `interceptor` and returns `value`. The interceptor\n     * is invoked with one argument; (value). The purpose of this method is to\n     * \"tap into\" a method chain sequence in order to modify intermediate results.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Seq\n     * @param {*} value The value to provide to `interceptor`.\n     * @param {Function} interceptor The function to invoke.\n     * @returns {*} Returns `value`.\n     * @example\n     *\n     * _([1, 2, 3])\n     *  .tap(function(array) {\n     *    // Mutate input array.\n     *    array.pop();\n     *  })\n     *  .reverse()\n     *  .value();\n     * // => [2, 1]\n     */\n\n\n    function tap(value, interceptor) {\n      interceptor(value);\n      return value;\n    }\n    /**\n     * This method is like `_.tap` except that it returns the result of `interceptor`.\n     * The purpose of this method is to \"pass thru\" values replacing intermediate\n     * results in a method chain sequence.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Seq\n     * @param {*} value The value to provide to `interceptor`.\n     * @param {Function} interceptor The function to invoke.\n     * @returns {*} Returns the result of `interceptor`.\n     * @example\n     *\n     * _('  abc  ')\n     *  .chain()\n     *  .trim()\n     *  .thru(function(value) {\n     *    return [value];\n     *  })\n     *  .value();\n     * // => ['abc']\n     */\n\n\n    function thru(value, interceptor) {\n      return interceptor(value);\n    }\n    /**\n     * This method is the wrapper version of `_.at`.\n     *\n     * @name at\n     * @memberOf _\n     * @since 1.0.0\n     * @category Seq\n     * @param {...(string|string[])} [paths] The property paths to pick.\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n     *\n     * _(object).at(['a[0].b.c', 'a[1]']).value();\n     * // => [3, 4]\n     */\n\n\n    var wrapperAt = flatRest(function (paths) {\n      var length = paths.length,\n          start = length ? paths[0] : 0,\n          value = this.__wrapped__,\n          interceptor = function interceptor(object) {\n        return baseAt(object, paths);\n      };\n\n      if (length > 1 || this.__actions__.length || !(value instanceof LazyWrapper) || !isIndex(start)) {\n        return this.thru(interceptor);\n      }\n\n      value = value.slice(start, +start + (length ? 1 : 0));\n\n      value.__actions__.push({\n        'func': thru,\n        'args': [interceptor],\n        'thisArg': undefined\n      });\n\n      return new LodashWrapper(value, this.__chain__).thru(function (array) {\n        if (length && !array.length) {\n          array.push(undefined);\n        }\n\n        return array;\n      });\n    });\n    /**\n     * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.\n     *\n     * @name chain\n     * @memberOf _\n     * @since 0.1.0\n     * @category Seq\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36 },\n     *   { 'user': 'fred',   'age': 40 }\n     * ];\n     *\n     * // A sequence without explicit chaining.\n     * _(users).head();\n     * // => { 'user': 'barney', 'age': 36 }\n     *\n     * // A sequence with explicit chaining.\n     * _(users)\n     *   .chain()\n     *   .head()\n     *   .pick('user')\n     *   .value();\n     * // => { 'user': 'barney' }\n     */\n\n    function wrapperChain() {\n      return chain(this);\n    }\n    /**\n     * Executes the chain sequence and returns the wrapped result.\n     *\n     * @name commit\n     * @memberOf _\n     * @since 3.2.0\n     * @category Seq\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var array = [1, 2];\n     * var wrapped = _(array).push(3);\n     *\n     * console.log(array);\n     * // => [1, 2]\n     *\n     * wrapped = wrapped.commit();\n     * console.log(array);\n     * // => [1, 2, 3]\n     *\n     * wrapped.last();\n     * // => 3\n     *\n     * console.log(array);\n     * // => [1, 2, 3]\n     */\n\n\n    function wrapperCommit() {\n      return new LodashWrapper(this.value(), this.__chain__);\n    }\n    /**\n     * Gets the next value on a wrapped object following the\n     * [iterator protocol](https://mdn.io/iteration_protocols#iterator).\n     *\n     * @name next\n     * @memberOf _\n     * @since 4.0.0\n     * @category Seq\n     * @returns {Object} Returns the next iterator value.\n     * @example\n     *\n     * var wrapped = _([1, 2]);\n     *\n     * wrapped.next();\n     * // => { 'done': false, 'value': 1 }\n     *\n     * wrapped.next();\n     * // => { 'done': false, 'value': 2 }\n     *\n     * wrapped.next();\n     * // => { 'done': true, 'value': undefined }\n     */\n\n\n    function wrapperNext() {\n      if (this.__values__ === undefined) {\n        this.__values__ = toArray(this.value());\n      }\n\n      var done = this.__index__ >= this.__values__.length,\n          value = done ? undefined : this.__values__[this.__index__++];\n      return {\n        'done': done,\n        'value': value\n      };\n    }\n    /**\n     * Enables the wrapper to be iterable.\n     *\n     * @name Symbol.iterator\n     * @memberOf _\n     * @since 4.0.0\n     * @category Seq\n     * @returns {Object} Returns the wrapper object.\n     * @example\n     *\n     * var wrapped = _([1, 2]);\n     *\n     * wrapped[Symbol.iterator]() === wrapped;\n     * // => true\n     *\n     * Array.from(wrapped);\n     * // => [1, 2]\n     */\n\n\n    function wrapperToIterator() {\n      return this;\n    }\n    /**\n     * Creates a clone of the chain sequence planting `value` as the wrapped value.\n     *\n     * @name plant\n     * @memberOf _\n     * @since 3.2.0\n     * @category Seq\n     * @param {*} value The value to plant.\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var wrapped = _([1, 2]).map(square);\n     * var other = wrapped.plant([3, 4]);\n     *\n     * other.value();\n     * // => [9, 16]\n     *\n     * wrapped.value();\n     * // => [1, 4]\n     */\n\n\n    function wrapperPlant(value) {\n      var result,\n          parent = this;\n\n      while (parent instanceof baseLodash) {\n        var clone = wrapperClone(parent);\n        clone.__index__ = 0;\n        clone.__values__ = undefined;\n\n        if (result) {\n          previous.__wrapped__ = clone;\n        } else {\n          result = clone;\n        }\n\n        var previous = clone;\n        parent = parent.__wrapped__;\n      }\n\n      previous.__wrapped__ = value;\n      return result;\n    }\n    /**\n     * This method is the wrapper version of `_.reverse`.\n     *\n     * **Note:** This method mutates the wrapped array.\n     *\n     * @name reverse\n     * @memberOf _\n     * @since 0.1.0\n     * @category Seq\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var array = [1, 2, 3];\n     *\n     * _(array).reverse().value()\n     * // => [3, 2, 1]\n     *\n     * console.log(array);\n     * // => [3, 2, 1]\n     */\n\n\n    function wrapperReverse() {\n      var value = this.__wrapped__;\n\n      if (value instanceof LazyWrapper) {\n        var wrapped = value;\n\n        if (this.__actions__.length) {\n          wrapped = new LazyWrapper(this);\n        }\n\n        wrapped = wrapped.reverse();\n\n        wrapped.__actions__.push({\n          'func': thru,\n          'args': [reverse],\n          'thisArg': undefined\n        });\n\n        return new LodashWrapper(wrapped, this.__chain__);\n      }\n\n      return this.thru(reverse);\n    }\n    /**\n     * Executes the chain sequence to resolve the unwrapped value.\n     *\n     * @name value\n     * @memberOf _\n     * @since 0.1.0\n     * @alias toJSON, valueOf\n     * @category Seq\n     * @returns {*} Returns the resolved unwrapped value.\n     * @example\n     *\n     * _([1, 2, 3]).value();\n     * // => [1, 2, 3]\n     */\n\n\n    function wrapperValue() {\n      return baseWrapperValue(this.__wrapped__, this.__actions__);\n    }\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates an object composed of keys generated from the results of running\n     * each element of `collection` thru `iteratee`. The corresponding value of\n     * each key is the number of times the key was returned by `iteratee`. The\n     * iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.5.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n     * @returns {Object} Returns the composed aggregate object.\n     * @example\n     *\n     * _.countBy([6.1, 4.2, 6.3], Math.floor);\n     * // => { '4': 1, '6': 2 }\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.countBy(['one', 'two', 'three'], 'length');\n     * // => { '3': 2, '5': 1 }\n     */\n\n\n    var countBy = createAggregator(function (result, value, key) {\n      if (hasOwnProperty.call(result, key)) {\n        ++result[key];\n      } else {\n        baseAssignValue(result, key, 1);\n      }\n    });\n    /**\n     * Checks if `predicate` returns truthy for **all** elements of `collection`.\n     * Iteration is stopped once `predicate` returns falsey. The predicate is\n     * invoked with three arguments: (value, index|key, collection).\n     *\n     * **Note:** This method returns `true` for\n     * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because\n     * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of\n     * elements of empty collections.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {boolean} Returns `true` if all elements pass the predicate check,\n     *  else `false`.\n     * @example\n     *\n     * _.every([true, 1, null, 'yes'], Boolean);\n     * // => false\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36, 'active': false },\n     *   { 'user': 'fred',   'age': 40, 'active': false }\n     * ];\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.every(users, { 'user': 'barney', 'active': false });\n     * // => false\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.every(users, ['active', false]);\n     * // => true\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.every(users, 'active');\n     * // => false\n     */\n\n    function every(collection, predicate, guard) {\n      var func = isArray(collection) ? arrayEvery : baseEvery;\n\n      if (guard && isIterateeCall(collection, predicate, guard)) {\n        predicate = undefined;\n      }\n\n      return func(collection, getIteratee(predicate, 3));\n    }\n    /**\n     * Iterates over elements of `collection`, returning an array of all elements\n     * `predicate` returns truthy for. The predicate is invoked with three\n     * arguments: (value, index|key, collection).\n     *\n     * **Note:** Unlike `_.remove`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new filtered array.\n     * @see _.reject\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36, 'active': true },\n     *   { 'user': 'fred',   'age': 40, 'active': false }\n     * ];\n     *\n     * _.filter(users, function(o) { return !o.active; });\n     * // => objects for ['fred']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.filter(users, { 'age': 36, 'active': true });\n     * // => objects for ['barney']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.filter(users, ['active', false]);\n     * // => objects for ['fred']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.filter(users, 'active');\n     * // => objects for ['barney']\n     *\n     * // Combining several predicates using `_.overEvery` or `_.overSome`.\n     * _.filter(users, _.overSome([{ 'age': 36 }, ['age', 40]]));\n     * // => objects for ['fred', 'barney']\n     */\n\n\n    function filter(collection, predicate) {\n      var func = isArray(collection) ? arrayFilter : baseFilter;\n      return func(collection, getIteratee(predicate, 3));\n    }\n    /**\n     * Iterates over elements of `collection`, returning the first element\n     * `predicate` returns truthy for. The predicate is invoked with three\n     * arguments: (value, index|key, collection).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param {number} [fromIndex=0] The index to search from.\n     * @returns {*} Returns the matched element, else `undefined`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'age': 36, 'active': true },\n     *   { 'user': 'fred',    'age': 40, 'active': false },\n     *   { 'user': 'pebbles', 'age': 1,  'active': true }\n     * ];\n     *\n     * _.find(users, function(o) { return o.age < 40; });\n     * // => object for 'barney'\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.find(users, { 'age': 1, 'active': true });\n     * // => object for 'pebbles'\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.find(users, ['active', false]);\n     * // => object for 'fred'\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.find(users, 'active');\n     * // => object for 'barney'\n     */\n\n\n    var find = createFind(findIndex);\n    /**\n     * This method is like `_.find` except that it iterates over elements of\n     * `collection` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param {number} [fromIndex=collection.length-1] The index to search from.\n     * @returns {*} Returns the matched element, else `undefined`.\n     * @example\n     *\n     * _.findLast([1, 2, 3, 4], function(n) {\n     *   return n % 2 == 1;\n     * });\n     * // => 3\n     */\n\n    var findLast = createFind(findLastIndex);\n    /**\n     * Creates a flattened array of values by running each element in `collection`\n     * thru `iteratee` and flattening the mapped results. The iteratee is invoked\n     * with three arguments: (value, index|key, collection).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * function duplicate(n) {\n     *   return [n, n];\n     * }\n     *\n     * _.flatMap([1, 2], duplicate);\n     * // => [1, 1, 2, 2]\n     */\n\n    function flatMap(collection, iteratee) {\n      return baseFlatten(map(collection, iteratee), 1);\n    }\n    /**\n     * This method is like `_.flatMap` except that it recursively flattens the\n     * mapped results.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * function duplicate(n) {\n     *   return [[[n, n]]];\n     * }\n     *\n     * _.flatMapDeep([1, 2], duplicate);\n     * // => [1, 1, 2, 2]\n     */\n\n\n    function flatMapDeep(collection, iteratee) {\n      return baseFlatten(map(collection, iteratee), INFINITY);\n    }\n    /**\n     * This method is like `_.flatMap` except that it recursively flattens the\n     * mapped results up to `depth` times.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @param {number} [depth=1] The maximum recursion depth.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * function duplicate(n) {\n     *   return [[[n, n]]];\n     * }\n     *\n     * _.flatMapDepth([1, 2], duplicate, 2);\n     * // => [[1, 1], [2, 2]]\n     */\n\n\n    function flatMapDepth(collection, iteratee, depth) {\n      depth = depth === undefined ? 1 : toInteger(depth);\n      return baseFlatten(map(collection, iteratee), depth);\n    }\n    /**\n     * Iterates over elements of `collection` and invokes `iteratee` for each element.\n     * The iteratee is invoked with three arguments: (value, index|key, collection).\n     * Iteratee functions may exit iteration early by explicitly returning `false`.\n     *\n     * **Note:** As with other \"Collections\" methods, objects with a \"length\"\n     * property are iterated like arrays. To avoid this behavior use `_.forIn`\n     * or `_.forOwn` for object iteration.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @alias each\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array|Object} Returns `collection`.\n     * @see _.forEachRight\n     * @example\n     *\n     * _.forEach([1, 2], function(value) {\n     *   console.log(value);\n     * });\n     * // => Logs `1` then `2`.\n     *\n     * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n     */\n\n\n    function forEach(collection, iteratee) {\n      var func = isArray(collection) ? arrayEach : baseEach;\n      return func(collection, getIteratee(iteratee, 3));\n    }\n    /**\n     * This method is like `_.forEach` except that it iterates over elements of\n     * `collection` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @alias eachRight\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array|Object} Returns `collection`.\n     * @see _.forEach\n     * @example\n     *\n     * _.forEachRight([1, 2], function(value) {\n     *   console.log(value);\n     * });\n     * // => Logs `2` then `1`.\n     */\n\n\n    function forEachRight(collection, iteratee) {\n      var func = isArray(collection) ? arrayEachRight : baseEachRight;\n      return func(collection, getIteratee(iteratee, 3));\n    }\n    /**\n     * Creates an object composed of keys generated from the results of running\n     * each element of `collection` thru `iteratee`. The order of grouped values\n     * is determined by the order they occur in `collection`. The corresponding\n     * value of each key is an array of elements responsible for generating the\n     * key. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n     * @returns {Object} Returns the composed aggregate object.\n     * @example\n     *\n     * _.groupBy([6.1, 4.2, 6.3], Math.floor);\n     * // => { '4': [4.2], '6': [6.1, 6.3] }\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.groupBy(['one', 'two', 'three'], 'length');\n     * // => { '3': ['one', 'two'], '5': ['three'] }\n     */\n\n\n    var groupBy = createAggregator(function (result, value, key) {\n      if (hasOwnProperty.call(result, key)) {\n        result[key].push(value);\n      } else {\n        baseAssignValue(result, key, [value]);\n      }\n    });\n    /**\n     * Checks if `value` is in `collection`. If `collection` is a string, it's\n     * checked for a substring of `value`, otherwise\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * is used for equality comparisons. If `fromIndex` is negative, it's used as\n     * the offset from the end of `collection`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object|string} collection The collection to inspect.\n     * @param {*} value The value to search for.\n     * @param {number} [fromIndex=0] The index to search from.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n     * @returns {boolean} Returns `true` if `value` is found, else `false`.\n     * @example\n     *\n     * _.includes([1, 2, 3], 1);\n     * // => true\n     *\n     * _.includes([1, 2, 3], 1, 2);\n     * // => false\n     *\n     * _.includes({ 'a': 1, 'b': 2 }, 1);\n     * // => true\n     *\n     * _.includes('abcd', 'bc');\n     * // => true\n     */\n\n    function includes(collection, value, fromIndex, guard) {\n      collection = isArrayLike(collection) ? collection : values(collection);\n      fromIndex = fromIndex && !guard ? toInteger(fromIndex) : 0;\n      var length = collection.length;\n\n      if (fromIndex < 0) {\n        fromIndex = nativeMax(length + fromIndex, 0);\n      }\n\n      return isString(collection) ? fromIndex <= length && collection.indexOf(value, fromIndex) > -1 : !!length && baseIndexOf(collection, value, fromIndex) > -1;\n    }\n    /**\n     * Invokes the method at `path` of each element in `collection`, returning\n     * an array of the results of each invoked method. Any additional arguments\n     * are provided to each invoked method. If `path` is a function, it's invoked\n     * for, and `this` bound to, each element in `collection`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Array|Function|string} path The path of the method to invoke or\n     *  the function invoked per iteration.\n     * @param {...*} [args] The arguments to invoke each method with.\n     * @returns {Array} Returns the array of results.\n     * @example\n     *\n     * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');\n     * // => [[1, 5, 7], [1, 2, 3]]\n     *\n     * _.invokeMap([123, 456], String.prototype.split, '');\n     * // => [['1', '2', '3'], ['4', '5', '6']]\n     */\n\n\n    var invokeMap = baseRest(function (collection, path, args) {\n      var index = -1,\n          isFunc = typeof path == 'function',\n          result = isArrayLike(collection) ? Array(collection.length) : [];\n      baseEach(collection, function (value) {\n        result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);\n      });\n      return result;\n    });\n    /**\n     * Creates an object composed of keys generated from the results of running\n     * each element of `collection` thru `iteratee`. The corresponding value of\n     * each key is the last element responsible for generating the key. The\n     * iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n     * @returns {Object} Returns the composed aggregate object.\n     * @example\n     *\n     * var array = [\n     *   { 'dir': 'left', 'code': 97 },\n     *   { 'dir': 'right', 'code': 100 }\n     * ];\n     *\n     * _.keyBy(array, function(o) {\n     *   return String.fromCharCode(o.code);\n     * });\n     * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }\n     *\n     * _.keyBy(array, 'dir');\n     * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }\n     */\n\n    var keyBy = createAggregator(function (result, value, key) {\n      baseAssignValue(result, key, value);\n    });\n    /**\n     * Creates an array of values by running each element in `collection` thru\n     * `iteratee`. The iteratee is invoked with three arguments:\n     * (value, index|key, collection).\n     *\n     * Many lodash methods are guarded to work as iteratees for methods like\n     * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.\n     *\n     * The guarded methods are:\n     * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,\n     * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,\n     * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,\n     * `template`, `trim`, `trimEnd`, `trimStart`, and `words`\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new mapped array.\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * _.map([4, 8], square);\n     * // => [16, 64]\n     *\n     * _.map({ 'a': 4, 'b': 8 }, square);\n     * // => [16, 64] (iteration order is not guaranteed)\n     *\n     * var users = [\n     *   { 'user': 'barney' },\n     *   { 'user': 'fred' }\n     * ];\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.map(users, 'user');\n     * // => ['barney', 'fred']\n     */\n\n    function map(collection, iteratee) {\n      var func = isArray(collection) ? arrayMap : baseMap;\n      return func(collection, getIteratee(iteratee, 3));\n    }\n    /**\n     * This method is like `_.sortBy` except that it allows specifying the sort\n     * orders of the iteratees to sort by. If `orders` is unspecified, all values\n     * are sorted in ascending order. Otherwise, specify an order of \"desc\" for\n     * descending or \"asc\" for ascending sort order of corresponding values.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]\n     *  The iteratees to sort by.\n     * @param {string[]} [orders] The sort orders of `iteratees`.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n     * @returns {Array} Returns the new sorted array.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'fred',   'age': 48 },\n     *   { 'user': 'barney', 'age': 34 },\n     *   { 'user': 'fred',   'age': 40 },\n     *   { 'user': 'barney', 'age': 36 }\n     * ];\n     *\n     * // Sort by `user` in ascending order and by `age` in descending order.\n     * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);\n     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]\n     */\n\n\n    function orderBy(collection, iteratees, orders, guard) {\n      if (collection == null) {\n        return [];\n      }\n\n      if (!isArray(iteratees)) {\n        iteratees = iteratees == null ? [] : [iteratees];\n      }\n\n      orders = guard ? undefined : orders;\n\n      if (!isArray(orders)) {\n        orders = orders == null ? [] : [orders];\n      }\n\n      return baseOrderBy(collection, iteratees, orders);\n    }\n    /**\n     * Creates an array of elements split into two groups, the first of which\n     * contains elements `predicate` returns truthy for, the second of which\n     * contains elements `predicate` returns falsey for. The predicate is\n     * invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the array of grouped elements.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'age': 36, 'active': false },\n     *   { 'user': 'fred',    'age': 40, 'active': true },\n     *   { 'user': 'pebbles', 'age': 1,  'active': false }\n     * ];\n     *\n     * _.partition(users, function(o) { return o.active; });\n     * // => objects for [['fred'], ['barney', 'pebbles']]\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.partition(users, { 'age': 1, 'active': false });\n     * // => objects for [['pebbles'], ['barney', 'fred']]\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.partition(users, ['active', false]);\n     * // => objects for [['barney', 'pebbles'], ['fred']]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.partition(users, 'active');\n     * // => objects for [['fred'], ['barney', 'pebbles']]\n     */\n\n\n    var partition = createAggregator(function (result, value, key) {\n      result[key ? 0 : 1].push(value);\n    }, function () {\n      return [[], []];\n    });\n    /**\n     * Reduces `collection` to a value which is the accumulated result of running\n     * each element in `collection` thru `iteratee`, where each successive\n     * invocation is supplied the return value of the previous. If `accumulator`\n     * is not given, the first element of `collection` is used as the initial\n     * value. The iteratee is invoked with four arguments:\n     * (accumulator, value, index|key, collection).\n     *\n     * Many lodash methods are guarded to work as iteratees for methods like\n     * `_.reduce`, `_.reduceRight`, and `_.transform`.\n     *\n     * The guarded methods are:\n     * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,\n     * and `sortBy`\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @param {*} [accumulator] The initial value.\n     * @returns {*} Returns the accumulated value.\n     * @see _.reduceRight\n     * @example\n     *\n     * _.reduce([1, 2], function(sum, n) {\n     *   return sum + n;\n     * }, 0);\n     * // => 3\n     *\n     * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n     *   (result[value] || (result[value] = [])).push(key);\n     *   return result;\n     * }, {});\n     * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)\n     */\n\n    function reduce(collection, iteratee, accumulator) {\n      var func = isArray(collection) ? arrayReduce : baseReduce,\n          initAccum = arguments.length < 3;\n      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);\n    }\n    /**\n     * This method is like `_.reduce` except that it iterates over elements of\n     * `collection` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @param {*} [accumulator] The initial value.\n     * @returns {*} Returns the accumulated value.\n     * @see _.reduce\n     * @example\n     *\n     * var array = [[0, 1], [2, 3], [4, 5]];\n     *\n     * _.reduceRight(array, function(flattened, other) {\n     *   return flattened.concat(other);\n     * }, []);\n     * // => [4, 5, 2, 3, 0, 1]\n     */\n\n\n    function reduceRight(collection, iteratee, accumulator) {\n      var func = isArray(collection) ? arrayReduceRight : baseReduce,\n          initAccum = arguments.length < 3;\n      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);\n    }\n    /**\n     * The opposite of `_.filter`; this method returns the elements of `collection`\n     * that `predicate` does **not** return truthy for.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new filtered array.\n     * @see _.filter\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36, 'active': false },\n     *   { 'user': 'fred',   'age': 40, 'active': true }\n     * ];\n     *\n     * _.reject(users, function(o) { return !o.active; });\n     * // => objects for ['fred']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.reject(users, { 'age': 40, 'active': true });\n     * // => objects for ['barney']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.reject(users, ['active', false]);\n     * // => objects for ['fred']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.reject(users, 'active');\n     * // => objects for ['barney']\n     */\n\n\n    function reject(collection, predicate) {\n      var func = isArray(collection) ? arrayFilter : baseFilter;\n      return func(collection, negate(getIteratee(predicate, 3)));\n    }\n    /**\n     * Gets a random element from `collection`.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to sample.\n     * @returns {*} Returns the random element.\n     * @example\n     *\n     * _.sample([1, 2, 3, 4]);\n     * // => 2\n     */\n\n\n    function sample(collection) {\n      var func = isArray(collection) ? arraySample : baseSample;\n      return func(collection);\n    }\n    /**\n     * Gets `n` random elements at unique keys from `collection` up to the\n     * size of `collection`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to sample.\n     * @param {number} [n=1] The number of elements to sample.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the random elements.\n     * @example\n     *\n     * _.sampleSize([1, 2, 3], 2);\n     * // => [3, 1]\n     *\n     * _.sampleSize([1, 2, 3], 4);\n     * // => [2, 3, 1]\n     */\n\n\n    function sampleSize(collection, n, guard) {\n      if (guard ? isIterateeCall(collection, n, guard) : n === undefined) {\n        n = 1;\n      } else {\n        n = toInteger(n);\n      }\n\n      var func = isArray(collection) ? arraySampleSize : baseSampleSize;\n      return func(collection, n);\n    }\n    /**\n     * Creates an array of shuffled values, using a version of the\n     * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to shuffle.\n     * @returns {Array} Returns the new shuffled array.\n     * @example\n     *\n     * _.shuffle([1, 2, 3, 4]);\n     * // => [4, 1, 3, 2]\n     */\n\n\n    function shuffle(collection) {\n      var func = isArray(collection) ? arrayShuffle : baseShuffle;\n      return func(collection);\n    }\n    /**\n     * Gets the size of `collection` by returning its length for array-like\n     * values or the number of own enumerable string keyed properties for objects.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object|string} collection The collection to inspect.\n     * @returns {number} Returns the collection size.\n     * @example\n     *\n     * _.size([1, 2, 3]);\n     * // => 3\n     *\n     * _.size({ 'a': 1, 'b': 2 });\n     * // => 2\n     *\n     * _.size('pebbles');\n     * // => 7\n     */\n\n\n    function size(collection) {\n      if (collection == null) {\n        return 0;\n      }\n\n      if (isArrayLike(collection)) {\n        return isString(collection) ? stringSize(collection) : collection.length;\n      }\n\n      var tag = getTag(collection);\n\n      if (tag == mapTag || tag == setTag) {\n        return collection.size;\n      }\n\n      return baseKeys(collection).length;\n    }\n    /**\n     * Checks if `predicate` returns truthy for **any** element of `collection`.\n     * Iteration is stopped once `predicate` returns truthy. The predicate is\n     * invoked with three arguments: (value, index|key, collection).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {boolean} Returns `true` if any element passes the predicate check,\n     *  else `false`.\n     * @example\n     *\n     * _.some([null, 0, 'yes', false], Boolean);\n     * // => true\n     *\n     * var users = [\n     *   { 'user': 'barney', 'active': true },\n     *   { 'user': 'fred',   'active': false }\n     * ];\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.some(users, { 'user': 'barney', 'active': false });\n     * // => false\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.some(users, ['active', false]);\n     * // => true\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.some(users, 'active');\n     * // => true\n     */\n\n\n    function some(collection, predicate, guard) {\n      var func = isArray(collection) ? arraySome : baseSome;\n\n      if (guard && isIterateeCall(collection, predicate, guard)) {\n        predicate = undefined;\n      }\n\n      return func(collection, getIteratee(predicate, 3));\n    }\n    /**\n     * Creates an array of elements, sorted in ascending order by the results of\n     * running each element in a collection thru each iteratee. This method\n     * performs a stable sort, that is, it preserves the original sort order of\n     * equal elements. The iteratees are invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {...(Function|Function[])} [iteratees=[_.identity]]\n     *  The iteratees to sort by.\n     * @returns {Array} Returns the new sorted array.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'fred',   'age': 48 },\n     *   { 'user': 'barney', 'age': 36 },\n     *   { 'user': 'fred',   'age': 30 },\n     *   { 'user': 'barney', 'age': 34 }\n     * ];\n     *\n     * _.sortBy(users, [function(o) { return o.user; }]);\n     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 30]]\n     *\n     * _.sortBy(users, ['user', 'age']);\n     * // => objects for [['barney', 34], ['barney', 36], ['fred', 30], ['fred', 48]]\n     */\n\n\n    var sortBy = baseRest(function (collection, iteratees) {\n      if (collection == null) {\n        return [];\n      }\n\n      var length = iteratees.length;\n\n      if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {\n        iteratees = [];\n      } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {\n        iteratees = [iteratees[0]];\n      }\n\n      return baseOrderBy(collection, baseFlatten(iteratees, 1), []);\n    });\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Gets the timestamp of the number of milliseconds that have elapsed since\n     * the Unix epoch (1 January 1970 00:00:00 UTC).\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Date\n     * @returns {number} Returns the timestamp.\n     * @example\n     *\n     * _.defer(function(stamp) {\n     *   console.log(_.now() - stamp);\n     * }, _.now());\n     * // => Logs the number of milliseconds it took for the deferred invocation.\n     */\n\n    var now = ctxNow || function () {\n      return root.Date.now();\n    };\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * The opposite of `_.before`; this method creates a function that invokes\n     * `func` once it's called `n` or more times.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {number} n The number of calls before `func` is invoked.\n     * @param {Function} func The function to restrict.\n     * @returns {Function} Returns the new restricted function.\n     * @example\n     *\n     * var saves = ['profile', 'settings'];\n     *\n     * var done = _.after(saves.length, function() {\n     *   console.log('done saving!');\n     * });\n     *\n     * _.forEach(saves, function(type) {\n     *   asyncSave({ 'type': type, 'complete': done });\n     * });\n     * // => Logs 'done saving!' after the two async saves have completed.\n     */\n\n\n    function after(n, func) {\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n\n      n = toInteger(n);\n      return function () {\n        if (--n < 1) {\n          return func.apply(this, arguments);\n        }\n      };\n    }\n    /**\n     * Creates a function that invokes `func`, with up to `n` arguments,\n     * ignoring any additional arguments.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {Function} func The function to cap arguments for.\n     * @param {number} [n=func.length] The arity cap.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Function} Returns the new capped function.\n     * @example\n     *\n     * _.map(['6', '8', '10'], _.ary(parseInt, 1));\n     * // => [6, 8, 10]\n     */\n\n\n    function ary(func, n, guard) {\n      n = guard ? undefined : n;\n      n = func && n == null ? func.length : n;\n      return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);\n    }\n    /**\n     * Creates a function that invokes `func`, with the `this` binding and arguments\n     * of the created function, while it's called less than `n` times. Subsequent\n     * calls to the created function return the result of the last `func` invocation.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {number} n The number of calls at which `func` is no longer invoked.\n     * @param {Function} func The function to restrict.\n     * @returns {Function} Returns the new restricted function.\n     * @example\n     *\n     * jQuery(element).on('click', _.before(5, addContactToList));\n     * // => Allows adding up to 4 contacts to the list.\n     */\n\n\n    function before(n, func) {\n      var result;\n\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n\n      n = toInteger(n);\n      return function () {\n        if (--n > 0) {\n          result = func.apply(this, arguments);\n        }\n\n        if (n <= 1) {\n          func = undefined;\n        }\n\n        return result;\n      };\n    }\n    /**\n     * Creates a function that invokes `func` with the `this` binding of `thisArg`\n     * and `partials` prepended to the arguments it receives.\n     *\n     * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,\n     * may be used as a placeholder for partially applied arguments.\n     *\n     * **Note:** Unlike native `Function#bind`, this method doesn't set the \"length\"\n     * property of bound functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to bind.\n     * @param {*} thisArg The `this` binding of `func`.\n     * @param {...*} [partials] The arguments to be partially applied.\n     * @returns {Function} Returns the new bound function.\n     * @example\n     *\n     * function greet(greeting, punctuation) {\n     *   return greeting + ' ' + this.user + punctuation;\n     * }\n     *\n     * var object = { 'user': 'fred' };\n     *\n     * var bound = _.bind(greet, object, 'hi');\n     * bound('!');\n     * // => 'hi fred!'\n     *\n     * // Bound with placeholders.\n     * var bound = _.bind(greet, object, _, '!');\n     * bound('hi');\n     * // => 'hi fred!'\n     */\n\n\n    var bind = baseRest(function (func, thisArg, partials) {\n      var bitmask = WRAP_BIND_FLAG;\n\n      if (partials.length) {\n        var holders = replaceHolders(partials, getHolder(bind));\n        bitmask |= WRAP_PARTIAL_FLAG;\n      }\n\n      return createWrap(func, bitmask, thisArg, partials, holders);\n    });\n    /**\n     * Creates a function that invokes the method at `object[key]` with `partials`\n     * prepended to the arguments it receives.\n     *\n     * This method differs from `_.bind` by allowing bound functions to reference\n     * methods that may be redefined or don't yet exist. See\n     * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)\n     * for more details.\n     *\n     * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic\n     * builds, may be used as a placeholder for partially applied arguments.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.10.0\n     * @category Function\n     * @param {Object} object The object to invoke the method on.\n     * @param {string} key The key of the method.\n     * @param {...*} [partials] The arguments to be partially applied.\n     * @returns {Function} Returns the new bound function.\n     * @example\n     *\n     * var object = {\n     *   'user': 'fred',\n     *   'greet': function(greeting, punctuation) {\n     *     return greeting + ' ' + this.user + punctuation;\n     *   }\n     * };\n     *\n     * var bound = _.bindKey(object, 'greet', 'hi');\n     * bound('!');\n     * // => 'hi fred!'\n     *\n     * object.greet = function(greeting, punctuation) {\n     *   return greeting + 'ya ' + this.user + punctuation;\n     * };\n     *\n     * bound('!');\n     * // => 'hiya fred!'\n     *\n     * // Bound with placeholders.\n     * var bound = _.bindKey(object, 'greet', _, '!');\n     * bound('hi');\n     * // => 'hiya fred!'\n     */\n\n    var bindKey = baseRest(function (object, key, partials) {\n      var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;\n\n      if (partials.length) {\n        var holders = replaceHolders(partials, getHolder(bindKey));\n        bitmask |= WRAP_PARTIAL_FLAG;\n      }\n\n      return createWrap(key, bitmask, object, partials, holders);\n    });\n    /**\n     * Creates a function that accepts arguments of `func` and either invokes\n     * `func` returning its result, if at least `arity` number of arguments have\n     * been provided, or returns a function that accepts the remaining `func`\n     * arguments, and so on. The arity of `func` may be specified if `func.length`\n     * is not sufficient.\n     *\n     * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,\n     * may be used as a placeholder for provided arguments.\n     *\n     * **Note:** This method doesn't set the \"length\" property of curried functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Function\n     * @param {Function} func The function to curry.\n     * @param {number} [arity=func.length] The arity of `func`.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Function} Returns the new curried function.\n     * @example\n     *\n     * var abc = function(a, b, c) {\n     *   return [a, b, c];\n     * };\n     *\n     * var curried = _.curry(abc);\n     *\n     * curried(1)(2)(3);\n     * // => [1, 2, 3]\n     *\n     * curried(1, 2)(3);\n     * // => [1, 2, 3]\n     *\n     * curried(1, 2, 3);\n     * // => [1, 2, 3]\n     *\n     * // Curried with placeholders.\n     * curried(1)(_, 3)(2);\n     * // => [1, 2, 3]\n     */\n\n    function curry(func, arity, guard) {\n      arity = guard ? undefined : arity;\n      var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n      result.placeholder = curry.placeholder;\n      return result;\n    }\n    /**\n     * This method is like `_.curry` except that arguments are applied to `func`\n     * in the manner of `_.partialRight` instead of `_.partial`.\n     *\n     * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic\n     * builds, may be used as a placeholder for provided arguments.\n     *\n     * **Note:** This method doesn't set the \"length\" property of curried functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {Function} func The function to curry.\n     * @param {number} [arity=func.length] The arity of `func`.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Function} Returns the new curried function.\n     * @example\n     *\n     * var abc = function(a, b, c) {\n     *   return [a, b, c];\n     * };\n     *\n     * var curried = _.curryRight(abc);\n     *\n     * curried(3)(2)(1);\n     * // => [1, 2, 3]\n     *\n     * curried(2, 3)(1);\n     * // => [1, 2, 3]\n     *\n     * curried(1, 2, 3);\n     * // => [1, 2, 3]\n     *\n     * // Curried with placeholders.\n     * curried(3)(1, _)(2);\n     * // => [1, 2, 3]\n     */\n\n\n    function curryRight(func, arity, guard) {\n      arity = guard ? undefined : arity;\n      var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n      result.placeholder = curryRight.placeholder;\n      return result;\n    }\n    /**\n     * Creates a debounced function that delays invoking `func` until after `wait`\n     * milliseconds have elapsed since the last time the debounced function was\n     * invoked. The debounced function comes with a `cancel` method to cancel\n     * delayed `func` invocations and a `flush` method to immediately invoke them.\n     * Provide `options` to indicate whether `func` should be invoked on the\n     * leading and/or trailing edge of the `wait` timeout. The `func` is invoked\n     * with the last arguments provided to the debounced function. Subsequent\n     * calls to the debounced function return the result of the last `func`\n     * invocation.\n     *\n     * **Note:** If `leading` and `trailing` options are `true`, `func` is\n     * invoked on the trailing edge of the timeout only if the debounced function\n     * is invoked more than once during the `wait` timeout.\n     *\n     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n     * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n     *\n     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n     * for details over the differences between `_.debounce` and `_.throttle`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to debounce.\n     * @param {number} [wait=0] The number of milliseconds to delay.\n     * @param {Object} [options={}] The options object.\n     * @param {boolean} [options.leading=false]\n     *  Specify invoking on the leading edge of the timeout.\n     * @param {number} [options.maxWait]\n     *  The maximum time `func` is allowed to be delayed before it's invoked.\n     * @param {boolean} [options.trailing=true]\n     *  Specify invoking on the trailing edge of the timeout.\n     * @returns {Function} Returns the new debounced function.\n     * @example\n     *\n     * // Avoid costly calculations while the window size is in flux.\n     * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n     *\n     * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n     * jQuery(element).on('click', _.debounce(sendMail, 300, {\n     *   'leading': true,\n     *   'trailing': false\n     * }));\n     *\n     * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n     * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n     * var source = new EventSource('/stream');\n     * jQuery(source).on('message', debounced);\n     *\n     * // Cancel the trailing debounced invocation.\n     * jQuery(window).on('popstate', debounced.cancel);\n     */\n\n\n    function debounce(func, wait, options) {\n      var lastArgs,\n          lastThis,\n          maxWait,\n          result,\n          timerId,\n          lastCallTime,\n          lastInvokeTime = 0,\n          leading = false,\n          maxing = false,\n          trailing = true;\n\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n\n      wait = toNumber(wait) || 0;\n\n      if (isObject(options)) {\n        leading = !!options.leading;\n        maxing = 'maxWait' in options;\n        maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\n        trailing = 'trailing' in options ? !!options.trailing : trailing;\n      }\n\n      function invokeFunc(time) {\n        var args = lastArgs,\n            thisArg = lastThis;\n        lastArgs = lastThis = undefined;\n        lastInvokeTime = time;\n        result = func.apply(thisArg, args);\n        return result;\n      }\n\n      function leadingEdge(time) {\n        // Reset any `maxWait` timer.\n        lastInvokeTime = time; // Start the timer for the trailing edge.\n\n        timerId = setTimeout(timerExpired, wait); // Invoke the leading edge.\n\n        return leading ? invokeFunc(time) : result;\n      }\n\n      function remainingWait(time) {\n        var timeSinceLastCall = time - lastCallTime,\n            timeSinceLastInvoke = time - lastInvokeTime,\n            timeWaiting = wait - timeSinceLastCall;\n        return maxing ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke) : timeWaiting;\n      }\n\n      function shouldInvoke(time) {\n        var timeSinceLastCall = time - lastCallTime,\n            timeSinceLastInvoke = time - lastInvokeTime; // Either this is the first call, activity has stopped and we're at the\n        // trailing edge, the system time has gone backwards and we're treating\n        // it as the trailing edge, or we've hit the `maxWait` limit.\n\n        return lastCallTime === undefined || timeSinceLastCall >= wait || timeSinceLastCall < 0 || maxing && timeSinceLastInvoke >= maxWait;\n      }\n\n      function timerExpired() {\n        var time = now();\n\n        if (shouldInvoke(time)) {\n          return trailingEdge(time);\n        } // Restart the timer.\n\n\n        timerId = setTimeout(timerExpired, remainingWait(time));\n      }\n\n      function trailingEdge(time) {\n        timerId = undefined; // Only invoke if we have `lastArgs` which means `func` has been\n        // debounced at least once.\n\n        if (trailing && lastArgs) {\n          return invokeFunc(time);\n        }\n\n        lastArgs = lastThis = undefined;\n        return result;\n      }\n\n      function cancel() {\n        if (timerId !== undefined) {\n          clearTimeout(timerId);\n        }\n\n        lastInvokeTime = 0;\n        lastArgs = lastCallTime = lastThis = timerId = undefined;\n      }\n\n      function flush() {\n        return timerId === undefined ? result : trailingEdge(now());\n      }\n\n      function debounced() {\n        var time = now(),\n            isInvoking = shouldInvoke(time);\n        lastArgs = arguments;\n        lastThis = this;\n        lastCallTime = time;\n\n        if (isInvoking) {\n          if (timerId === undefined) {\n            return leadingEdge(lastCallTime);\n          }\n\n          if (maxing) {\n            // Handle invocations in a tight loop.\n            clearTimeout(timerId);\n            timerId = setTimeout(timerExpired, wait);\n            return invokeFunc(lastCallTime);\n          }\n        }\n\n        if (timerId === undefined) {\n          timerId = setTimeout(timerExpired, wait);\n        }\n\n        return result;\n      }\n\n      debounced.cancel = cancel;\n      debounced.flush = flush;\n      return debounced;\n    }\n    /**\n     * Defers invoking the `func` until the current call stack has cleared. Any\n     * additional arguments are provided to `func` when it's invoked.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to defer.\n     * @param {...*} [args] The arguments to invoke `func` with.\n     * @returns {number} Returns the timer id.\n     * @example\n     *\n     * _.defer(function(text) {\n     *   console.log(text);\n     * }, 'deferred');\n     * // => Logs 'deferred' after one millisecond.\n     */\n\n\n    var defer = baseRest(function (func, args) {\n      return baseDelay(func, 1, args);\n    });\n    /**\n     * Invokes `func` after `wait` milliseconds. Any additional arguments are\n     * provided to `func` when it's invoked.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to delay.\n     * @param {number} wait The number of milliseconds to delay invocation.\n     * @param {...*} [args] The arguments to invoke `func` with.\n     * @returns {number} Returns the timer id.\n     * @example\n     *\n     * _.delay(function(text) {\n     *   console.log(text);\n     * }, 1000, 'later');\n     * // => Logs 'later' after one second.\n     */\n\n    var delay = baseRest(function (func, wait, args) {\n      return baseDelay(func, toNumber(wait) || 0, args);\n    });\n    /**\n     * Creates a function that invokes `func` with arguments reversed.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Function\n     * @param {Function} func The function to flip arguments for.\n     * @returns {Function} Returns the new flipped function.\n     * @example\n     *\n     * var flipped = _.flip(function() {\n     *   return _.toArray(arguments);\n     * });\n     *\n     * flipped('a', 'b', 'c', 'd');\n     * // => ['d', 'c', 'b', 'a']\n     */\n\n    function flip(func) {\n      return createWrap(func, WRAP_FLIP_FLAG);\n    }\n    /**\n     * Creates a function that memoizes the result of `func`. If `resolver` is\n     * provided, it determines the cache key for storing the result based on the\n     * arguments provided to the memoized function. By default, the first argument\n     * provided to the memoized function is used as the map cache key. The `func`\n     * is invoked with the `this` binding of the memoized function.\n     *\n     * **Note:** The cache is exposed as the `cache` property on the memoized\n     * function. Its creation may be customized by replacing the `_.memoize.Cache`\n     * constructor with one whose instances implement the\n     * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)\n     * method interface of `clear`, `delete`, `get`, `has`, and `set`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to have its output memoized.\n     * @param {Function} [resolver] The function to resolve the cache key.\n     * @returns {Function} Returns the new memoized function.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2 };\n     * var other = { 'c': 3, 'd': 4 };\n     *\n     * var values = _.memoize(_.values);\n     * values(object);\n     * // => [1, 2]\n     *\n     * values(other);\n     * // => [3, 4]\n     *\n     * object.a = 2;\n     * values(object);\n     * // => [1, 2]\n     *\n     * // Modify the result cache.\n     * values.cache.set(object, ['a', 'b']);\n     * values(object);\n     * // => ['a', 'b']\n     *\n     * // Replace `_.memoize.Cache`.\n     * _.memoize.Cache = WeakMap;\n     */\n\n\n    function memoize(func, resolver) {\n      if (typeof func != 'function' || resolver != null && typeof resolver != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n\n      var memoized = function memoized() {\n        var args = arguments,\n            key = resolver ? resolver.apply(this, args) : args[0],\n            cache = memoized.cache;\n\n        if (cache.has(key)) {\n          return cache.get(key);\n        }\n\n        var result = func.apply(this, args);\n        memoized.cache = cache.set(key, result) || cache;\n        return result;\n      };\n\n      memoized.cache = new (memoize.Cache || MapCache)();\n      return memoized;\n    } // Expose `MapCache`.\n\n\n    memoize.Cache = MapCache;\n    /**\n     * Creates a function that negates the result of the predicate `func`. The\n     * `func` predicate is invoked with the `this` binding and arguments of the\n     * created function.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {Function} predicate The predicate to negate.\n     * @returns {Function} Returns the new negated function.\n     * @example\n     *\n     * function isEven(n) {\n     *   return n % 2 == 0;\n     * }\n     *\n     * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));\n     * // => [1, 3, 5]\n     */\n\n    function negate(predicate) {\n      if (typeof predicate != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n\n      return function () {\n        var args = arguments;\n\n        switch (args.length) {\n          case 0:\n            return !predicate.call(this);\n\n          case 1:\n            return !predicate.call(this, args[0]);\n\n          case 2:\n            return !predicate.call(this, args[0], args[1]);\n\n          case 3:\n            return !predicate.call(this, args[0], args[1], args[2]);\n        }\n\n        return !predicate.apply(this, args);\n      };\n    }\n    /**\n     * Creates a function that is restricted to invoking `func` once. Repeat calls\n     * to the function return the value of the first invocation. The `func` is\n     * invoked with the `this` binding and arguments of the created function.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to restrict.\n     * @returns {Function} Returns the new restricted function.\n     * @example\n     *\n     * var initialize = _.once(createApplication);\n     * initialize();\n     * initialize();\n     * // => `createApplication` is invoked once\n     */\n\n\n    function once(func) {\n      return before(2, func);\n    }\n    /**\n     * Creates a function that invokes `func` with its arguments transformed.\n     *\n     * @static\n     * @since 4.0.0\n     * @memberOf _\n     * @category Function\n     * @param {Function} func The function to wrap.\n     * @param {...(Function|Function[])} [transforms=[_.identity]]\n     *  The argument transforms.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * function doubled(n) {\n     *   return n * 2;\n     * }\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var func = _.overArgs(function(x, y) {\n     *   return [x, y];\n     * }, [square, doubled]);\n     *\n     * func(9, 3);\n     * // => [81, 6]\n     *\n     * func(10, 5);\n     * // => [100, 10]\n     */\n\n\n    var overArgs = castRest(function (func, transforms) {\n      transforms = transforms.length == 1 && isArray(transforms[0]) ? arrayMap(transforms[0], baseUnary(getIteratee())) : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));\n      var funcsLength = transforms.length;\n      return baseRest(function (args) {\n        var index = -1,\n            length = nativeMin(args.length, funcsLength);\n\n        while (++index < length) {\n          args[index] = transforms[index].call(this, args[index]);\n        }\n\n        return apply(func, this, args);\n      });\n    });\n    /**\n     * Creates a function that invokes `func` with `partials` prepended to the\n     * arguments it receives. This method is like `_.bind` except it does **not**\n     * alter the `this` binding.\n     *\n     * The `_.partial.placeholder` value, which defaults to `_` in monolithic\n     * builds, may be used as a placeholder for partially applied arguments.\n     *\n     * **Note:** This method doesn't set the \"length\" property of partially\n     * applied functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.2.0\n     * @category Function\n     * @param {Function} func The function to partially apply arguments to.\n     * @param {...*} [partials] The arguments to be partially applied.\n     * @returns {Function} Returns the new partially applied function.\n     * @example\n     *\n     * function greet(greeting, name) {\n     *   return greeting + ' ' + name;\n     * }\n     *\n     * var sayHelloTo = _.partial(greet, 'hello');\n     * sayHelloTo('fred');\n     * // => 'hello fred'\n     *\n     * // Partially applied with placeholders.\n     * var greetFred = _.partial(greet, _, 'fred');\n     * greetFred('hi');\n     * // => 'hi fred'\n     */\n\n    var partial = baseRest(function (func, partials) {\n      var holders = replaceHolders(partials, getHolder(partial));\n      return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);\n    });\n    /**\n     * This method is like `_.partial` except that partially applied arguments\n     * are appended to the arguments it receives.\n     *\n     * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic\n     * builds, may be used as a placeholder for partially applied arguments.\n     *\n     * **Note:** This method doesn't set the \"length\" property of partially\n     * applied functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.0.0\n     * @category Function\n     * @param {Function} func The function to partially apply arguments to.\n     * @param {...*} [partials] The arguments to be partially applied.\n     * @returns {Function} Returns the new partially applied function.\n     * @example\n     *\n     * function greet(greeting, name) {\n     *   return greeting + ' ' + name;\n     * }\n     *\n     * var greetFred = _.partialRight(greet, 'fred');\n     * greetFred('hi');\n     * // => 'hi fred'\n     *\n     * // Partially applied with placeholders.\n     * var sayHelloTo = _.partialRight(greet, 'hello', _);\n     * sayHelloTo('fred');\n     * // => 'hello fred'\n     */\n\n    var partialRight = baseRest(function (func, partials) {\n      var holders = replaceHolders(partials, getHolder(partialRight));\n      return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);\n    });\n    /**\n     * Creates a function that invokes `func` with arguments arranged according\n     * to the specified `indexes` where the argument value at the first index is\n     * provided as the first argument, the argument value at the second index is\n     * provided as the second argument, and so on.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {Function} func The function to rearrange arguments for.\n     * @param {...(number|number[])} indexes The arranged argument indexes.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var rearged = _.rearg(function(a, b, c) {\n     *   return [a, b, c];\n     * }, [2, 0, 1]);\n     *\n     * rearged('b', 'c', 'a')\n     * // => ['a', 'b', 'c']\n     */\n\n    var rearg = flatRest(function (func, indexes) {\n      return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);\n    });\n    /**\n     * Creates a function that invokes `func` with the `this` binding of the\n     * created function and arguments from `start` and beyond provided as\n     * an array.\n     *\n     * **Note:** This method is based on the\n     * [rest parameter](https://mdn.io/rest_parameters).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Function\n     * @param {Function} func The function to apply a rest parameter to.\n     * @param {number} [start=func.length-1] The start position of the rest parameter.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var say = _.rest(function(what, names) {\n     *   return what + ' ' + _.initial(names).join(', ') +\n     *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);\n     * });\n     *\n     * say('hello', 'fred', 'barney', 'pebbles');\n     * // => 'hello fred, barney, & pebbles'\n     */\n\n    function rest(func, start) {\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n\n      start = start === undefined ? start : toInteger(start);\n      return baseRest(func, start);\n    }\n    /**\n     * Creates a function that invokes `func` with the `this` binding of the\n     * create function and an array of arguments much like\n     * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).\n     *\n     * **Note:** This method is based on the\n     * [spread operator](https://mdn.io/spread_operator).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.2.0\n     * @category Function\n     * @param {Function} func The function to spread arguments over.\n     * @param {number} [start=0] The start position of the spread.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var say = _.spread(function(who, what) {\n     *   return who + ' says ' + what;\n     * });\n     *\n     * say(['fred', 'hello']);\n     * // => 'fred says hello'\n     *\n     * var numbers = Promise.all([\n     *   Promise.resolve(40),\n     *   Promise.resolve(36)\n     * ]);\n     *\n     * numbers.then(_.spread(function(x, y) {\n     *   return x + y;\n     * }));\n     * // => a Promise of 76\n     */\n\n\n    function spread(func, start) {\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n\n      start = start == null ? 0 : nativeMax(toInteger(start), 0);\n      return baseRest(function (args) {\n        var array = args[start],\n            otherArgs = castSlice(args, 0, start);\n\n        if (array) {\n          arrayPush(otherArgs, array);\n        }\n\n        return apply(func, this, otherArgs);\n      });\n    }\n    /**\n     * Creates a throttled function that only invokes `func` at most once per\n     * every `wait` milliseconds. The throttled function comes with a `cancel`\n     * method to cancel delayed `func` invocations and a `flush` method to\n     * immediately invoke them. Provide `options` to indicate whether `func`\n     * should be invoked on the leading and/or trailing edge of the `wait`\n     * timeout. The `func` is invoked with the last arguments provided to the\n     * throttled function. Subsequent calls to the throttled function return the\n     * result of the last `func` invocation.\n     *\n     * **Note:** If `leading` and `trailing` options are `true`, `func` is\n     * invoked on the trailing edge of the timeout only if the throttled function\n     * is invoked more than once during the `wait` timeout.\n     *\n     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n     * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n     *\n     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n     * for details over the differences between `_.throttle` and `_.debounce`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to throttle.\n     * @param {number} [wait=0] The number of milliseconds to throttle invocations to.\n     * @param {Object} [options={}] The options object.\n     * @param {boolean} [options.leading=true]\n     *  Specify invoking on the leading edge of the timeout.\n     * @param {boolean} [options.trailing=true]\n     *  Specify invoking on the trailing edge of the timeout.\n     * @returns {Function} Returns the new throttled function.\n     * @example\n     *\n     * // Avoid excessively updating the position while scrolling.\n     * jQuery(window).on('scroll', _.throttle(updatePosition, 100));\n     *\n     * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.\n     * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });\n     * jQuery(element).on('click', throttled);\n     *\n     * // Cancel the trailing throttled invocation.\n     * jQuery(window).on('popstate', throttled.cancel);\n     */\n\n\n    function throttle(func, wait, options) {\n      var leading = true,\n          trailing = true;\n\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n\n      if (isObject(options)) {\n        leading = 'leading' in options ? !!options.leading : leading;\n        trailing = 'trailing' in options ? !!options.trailing : trailing;\n      }\n\n      return debounce(func, wait, {\n        'leading': leading,\n        'maxWait': wait,\n        'trailing': trailing\n      });\n    }\n    /**\n     * Creates a function that accepts up to one argument, ignoring any\n     * additional arguments.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Function\n     * @param {Function} func The function to cap arguments for.\n     * @returns {Function} Returns the new capped function.\n     * @example\n     *\n     * _.map(['6', '8', '10'], _.unary(parseInt));\n     * // => [6, 8, 10]\n     */\n\n\n    function unary(func) {\n      return ary(func, 1);\n    }\n    /**\n     * Creates a function that provides `value` to `wrapper` as its first\n     * argument. Any additional arguments provided to the function are appended\n     * to those provided to the `wrapper`. The wrapper is invoked with the `this`\n     * binding of the created function.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {*} value The value to wrap.\n     * @param {Function} [wrapper=identity] The wrapper function.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var p = _.wrap(_.escape, function(func, text) {\n     *   return '<p>' + func(text) + '</p>';\n     * });\n     *\n     * p('fred, barney, & pebbles');\n     * // => '<p>fred, barney, &amp; pebbles</p>'\n     */\n\n\n    function wrap(value, wrapper) {\n      return partial(castFunction(wrapper), value);\n    }\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Casts `value` as an array if it's not one.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.4.0\n     * @category Lang\n     * @param {*} value The value to inspect.\n     * @returns {Array} Returns the cast array.\n     * @example\n     *\n     * _.castArray(1);\n     * // => [1]\n     *\n     * _.castArray({ 'a': 1 });\n     * // => [{ 'a': 1 }]\n     *\n     * _.castArray('abc');\n     * // => ['abc']\n     *\n     * _.castArray(null);\n     * // => [null]\n     *\n     * _.castArray(undefined);\n     * // => [undefined]\n     *\n     * _.castArray();\n     * // => []\n     *\n     * var array = [1, 2, 3];\n     * console.log(_.castArray(array) === array);\n     * // => true\n     */\n\n\n    function castArray() {\n      if (!arguments.length) {\n        return [];\n      }\n\n      var value = arguments[0];\n      return isArray(value) ? value : [value];\n    }\n    /**\n     * Creates a shallow clone of `value`.\n     *\n     * **Note:** This method is loosely based on the\n     * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)\n     * and supports cloning arrays, array buffers, booleans, date objects, maps,\n     * numbers, `Object` objects, regexes, sets, strings, symbols, and typed\n     * arrays. The own enumerable properties of `arguments` objects are cloned\n     * as plain objects. An empty object is returned for uncloneable values such\n     * as error objects, functions, DOM nodes, and WeakMaps.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to clone.\n     * @returns {*} Returns the cloned value.\n     * @see _.cloneDeep\n     * @example\n     *\n     * var objects = [{ 'a': 1 }, { 'b': 2 }];\n     *\n     * var shallow = _.clone(objects);\n     * console.log(shallow[0] === objects[0]);\n     * // => true\n     */\n\n\n    function clone(value) {\n      return baseClone(value, CLONE_SYMBOLS_FLAG);\n    }\n    /**\n     * This method is like `_.clone` except that it accepts `customizer` which\n     * is invoked to produce the cloned value. If `customizer` returns `undefined`,\n     * cloning is handled by the method instead. The `customizer` is invoked with\n     * up to four arguments; (value [, index|key, object, stack]).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to clone.\n     * @param {Function} [customizer] The function to customize cloning.\n     * @returns {*} Returns the cloned value.\n     * @see _.cloneDeepWith\n     * @example\n     *\n     * function customizer(value) {\n     *   if (_.isElement(value)) {\n     *     return value.cloneNode(false);\n     *   }\n     * }\n     *\n     * var el = _.cloneWith(document.body, customizer);\n     *\n     * console.log(el === document.body);\n     * // => false\n     * console.log(el.nodeName);\n     * // => 'BODY'\n     * console.log(el.childNodes.length);\n     * // => 0\n     */\n\n\n    function cloneWith(value, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);\n    }\n    /**\n     * This method is like `_.clone` except that it recursively clones `value`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.0.0\n     * @category Lang\n     * @param {*} value The value to recursively clone.\n     * @returns {*} Returns the deep cloned value.\n     * @see _.clone\n     * @example\n     *\n     * var objects = [{ 'a': 1 }, { 'b': 2 }];\n     *\n     * var deep = _.cloneDeep(objects);\n     * console.log(deep[0] === objects[0]);\n     * // => false\n     */\n\n\n    function cloneDeep(value) {\n      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);\n    }\n    /**\n     * This method is like `_.cloneWith` except that it recursively clones `value`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to recursively clone.\n     * @param {Function} [customizer] The function to customize cloning.\n     * @returns {*} Returns the deep cloned value.\n     * @see _.cloneWith\n     * @example\n     *\n     * function customizer(value) {\n     *   if (_.isElement(value)) {\n     *     return value.cloneNode(true);\n     *   }\n     * }\n     *\n     * var el = _.cloneDeepWith(document.body, customizer);\n     *\n     * console.log(el === document.body);\n     * // => false\n     * console.log(el.nodeName);\n     * // => 'BODY'\n     * console.log(el.childNodes.length);\n     * // => 20\n     */\n\n\n    function cloneDeepWith(value, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);\n    }\n    /**\n     * Checks if `object` conforms to `source` by invoking the predicate\n     * properties of `source` with the corresponding property values of `object`.\n     *\n     * **Note:** This method is equivalent to `_.conforms` when `source` is\n     * partially applied.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.14.0\n     * @category Lang\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property predicates to conform to.\n     * @returns {boolean} Returns `true` if `object` conforms, else `false`.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2 };\n     *\n     * _.conformsTo(object, { 'b': function(n) { return n > 1; } });\n     * // => true\n     *\n     * _.conformsTo(object, { 'b': function(n) { return n > 2; } });\n     * // => false\n     */\n\n\n    function conformsTo(object, source) {\n      return source == null || baseConformsTo(object, source, keys(source));\n    }\n    /**\n     * Performs a\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * comparison between two values to determine if they are equivalent.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n     * @example\n     *\n     * var object = { 'a': 1 };\n     * var other = { 'a': 1 };\n     *\n     * _.eq(object, object);\n     * // => true\n     *\n     * _.eq(object, other);\n     * // => false\n     *\n     * _.eq('a', 'a');\n     * // => true\n     *\n     * _.eq('a', Object('a'));\n     * // => false\n     *\n     * _.eq(NaN, NaN);\n     * // => true\n     */\n\n\n    function eq(value, other) {\n      return value === other || value !== value && other !== other;\n    }\n    /**\n     * Checks if `value` is greater than `other`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.9.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is greater than `other`,\n     *  else `false`.\n     * @see _.lt\n     * @example\n     *\n     * _.gt(3, 1);\n     * // => true\n     *\n     * _.gt(3, 3);\n     * // => false\n     *\n     * _.gt(1, 3);\n     * // => false\n     */\n\n\n    var gt = createRelationalOperation(baseGt);\n    /**\n     * Checks if `value` is greater than or equal to `other`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.9.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is greater than or equal to\n     *  `other`, else `false`.\n     * @see _.lte\n     * @example\n     *\n     * _.gte(3, 1);\n     * // => true\n     *\n     * _.gte(3, 3);\n     * // => true\n     *\n     * _.gte(1, 3);\n     * // => false\n     */\n\n    var gte = createRelationalOperation(function (value, other) {\n      return value >= other;\n    });\n    /**\n     * Checks if `value` is likely an `arguments` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n     *  else `false`.\n     * @example\n     *\n     * _.isArguments(function() { return arguments; }());\n     * // => true\n     *\n     * _.isArguments([1, 2, 3]);\n     * // => false\n     */\n\n    var isArguments = baseIsArguments(function () {\n      return arguments;\n    }()) ? baseIsArguments : function (value) {\n      return isObjectLike(value) && hasOwnProperty.call(value, 'callee') && !propertyIsEnumerable.call(value, 'callee');\n    };\n    /**\n     * Checks if `value` is classified as an `Array` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an array, else `false`.\n     * @example\n     *\n     * _.isArray([1, 2, 3]);\n     * // => true\n     *\n     * _.isArray(document.body.children);\n     * // => false\n     *\n     * _.isArray('abc');\n     * // => false\n     *\n     * _.isArray(_.noop);\n     * // => false\n     */\n\n    var isArray = Array.isArray;\n    /**\n     * Checks if `value` is classified as an `ArrayBuffer` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n     * @example\n     *\n     * _.isArrayBuffer(new ArrayBuffer(2));\n     * // => true\n     *\n     * _.isArrayBuffer(new Array(2));\n     * // => false\n     */\n\n    var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;\n    /**\n     * Checks if `value` is array-like. A value is considered array-like if it's\n     * not a function and has a `value.length` that's an integer greater than or\n     * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n     * @example\n     *\n     * _.isArrayLike([1, 2, 3]);\n     * // => true\n     *\n     * _.isArrayLike(document.body.children);\n     * // => true\n     *\n     * _.isArrayLike('abc');\n     * // => true\n     *\n     * _.isArrayLike(_.noop);\n     * // => false\n     */\n\n    function isArrayLike(value) {\n      return value != null && isLength(value.length) && !isFunction(value);\n    }\n    /**\n     * This method is like `_.isArrayLike` except that it also checks if `value`\n     * is an object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an array-like object,\n     *  else `false`.\n     * @example\n     *\n     * _.isArrayLikeObject([1, 2, 3]);\n     * // => true\n     *\n     * _.isArrayLikeObject(document.body.children);\n     * // => true\n     *\n     * _.isArrayLikeObject('abc');\n     * // => false\n     *\n     * _.isArrayLikeObject(_.noop);\n     * // => false\n     */\n\n\n    function isArrayLikeObject(value) {\n      return isObjectLike(value) && isArrayLike(value);\n    }\n    /**\n     * Checks if `value` is classified as a boolean primitive or object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.\n     * @example\n     *\n     * _.isBoolean(false);\n     * // => true\n     *\n     * _.isBoolean(null);\n     * // => false\n     */\n\n\n    function isBoolean(value) {\n      return value === true || value === false || isObjectLike(value) && baseGetTag(value) == boolTag;\n    }\n    /**\n     * Checks if `value` is a buffer.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.\n     * @example\n     *\n     * _.isBuffer(new Buffer(2));\n     * // => true\n     *\n     * _.isBuffer(new Uint8Array(2));\n     * // => false\n     */\n\n\n    var isBuffer = nativeIsBuffer || stubFalse;\n    /**\n     * Checks if `value` is classified as a `Date` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n     * @example\n     *\n     * _.isDate(new Date);\n     * // => true\n     *\n     * _.isDate('Mon April 23 2012');\n     * // => false\n     */\n\n    var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;\n    /**\n     * Checks if `value` is likely a DOM element.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.\n     * @example\n     *\n     * _.isElement(document.body);\n     * // => true\n     *\n     * _.isElement('<body>');\n     * // => false\n     */\n\n    function isElement(value) {\n      return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);\n    }\n    /**\n     * Checks if `value` is an empty object, collection, map, or set.\n     *\n     * Objects are considered empty if they have no own enumerable string keyed\n     * properties.\n     *\n     * Array-like values such as `arguments` objects, arrays, buffers, strings, or\n     * jQuery-like collections are considered empty if they have a `length` of `0`.\n     * Similarly, maps and sets are considered empty if they have a `size` of `0`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is empty, else `false`.\n     * @example\n     *\n     * _.isEmpty(null);\n     * // => true\n     *\n     * _.isEmpty(true);\n     * // => true\n     *\n     * _.isEmpty(1);\n     * // => true\n     *\n     * _.isEmpty([1, 2, 3]);\n     * // => false\n     *\n     * _.isEmpty({ 'a': 1 });\n     * // => false\n     */\n\n\n    function isEmpty(value) {\n      if (value == null) {\n        return true;\n      }\n\n      if (isArrayLike(value) && (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' || isBuffer(value) || isTypedArray(value) || isArguments(value))) {\n        return !value.length;\n      }\n\n      var tag = getTag(value);\n\n      if (tag == mapTag || tag == setTag) {\n        return !value.size;\n      }\n\n      if (isPrototype(value)) {\n        return !baseKeys(value).length;\n      }\n\n      for (var key in value) {\n        if (hasOwnProperty.call(value, key)) {\n          return false;\n        }\n      }\n\n      return true;\n    }\n    /**\n     * Performs a deep comparison between two values to determine if they are\n     * equivalent.\n     *\n     * **Note:** This method supports comparing arrays, array buffers, booleans,\n     * date objects, error objects, maps, numbers, `Object` objects, regexes,\n     * sets, strings, symbols, and typed arrays. `Object` objects are compared\n     * by their own, not inherited, enumerable properties. Functions and DOM\n     * nodes are compared by strict equality, i.e. `===`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n     * @example\n     *\n     * var object = { 'a': 1 };\n     * var other = { 'a': 1 };\n     *\n     * _.isEqual(object, other);\n     * // => true\n     *\n     * object === other;\n     * // => false\n     */\n\n\n    function isEqual(value, other) {\n      return baseIsEqual(value, other);\n    }\n    /**\n     * This method is like `_.isEqual` except that it accepts `customizer` which\n     * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n     * are handled by the method instead. The `customizer` is invoked with up to\n     * six arguments: (objValue, othValue [, index|key, object, other, stack]).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @param {Function} [customizer] The function to customize comparisons.\n     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n     * @example\n     *\n     * function isGreeting(value) {\n     *   return /^h(?:i|ello)$/.test(value);\n     * }\n     *\n     * function customizer(objValue, othValue) {\n     *   if (isGreeting(objValue) && isGreeting(othValue)) {\n     *     return true;\n     *   }\n     * }\n     *\n     * var array = ['hello', 'goodbye'];\n     * var other = ['hi', 'goodbye'];\n     *\n     * _.isEqualWith(array, other, customizer);\n     * // => true\n     */\n\n\n    function isEqualWith(value, other, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      var result = customizer ? customizer(value, other) : undefined;\n      return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;\n    }\n    /**\n     * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,\n     * `SyntaxError`, `TypeError`, or `URIError` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an error object, else `false`.\n     * @example\n     *\n     * _.isError(new Error);\n     * // => true\n     *\n     * _.isError(Error);\n     * // => false\n     */\n\n\n    function isError(value) {\n      if (!isObjectLike(value)) {\n        return false;\n      }\n\n      var tag = baseGetTag(value);\n      return tag == errorTag || tag == domExcTag || typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value);\n    }\n    /**\n     * Checks if `value` is a finite primitive number.\n     *\n     * **Note:** This method is based on\n     * [`Number.isFinite`](https://mdn.io/Number/isFinite).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.\n     * @example\n     *\n     * _.isFinite(3);\n     * // => true\n     *\n     * _.isFinite(Number.MIN_VALUE);\n     * // => true\n     *\n     * _.isFinite(Infinity);\n     * // => false\n     *\n     * _.isFinite('3');\n     * // => false\n     */\n\n\n    function isFinite(value) {\n      return typeof value == 'number' && nativeIsFinite(value);\n    }\n    /**\n     * Checks if `value` is classified as a `Function` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a function, else `false`.\n     * @example\n     *\n     * _.isFunction(_);\n     * // => true\n     *\n     * _.isFunction(/abc/);\n     * // => false\n     */\n\n\n    function isFunction(value) {\n      if (!isObject(value)) {\n        return false;\n      } // The use of `Object#toString` avoids issues with the `typeof` operator\n      // in Safari 9 which returns 'object' for typed arrays and other constructors.\n\n\n      var tag = baseGetTag(value);\n      return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;\n    }\n    /**\n     * Checks if `value` is an integer.\n     *\n     * **Note:** This method is based on\n     * [`Number.isInteger`](https://mdn.io/Number/isInteger).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an integer, else `false`.\n     * @example\n     *\n     * _.isInteger(3);\n     * // => true\n     *\n     * _.isInteger(Number.MIN_VALUE);\n     * // => false\n     *\n     * _.isInteger(Infinity);\n     * // => false\n     *\n     * _.isInteger('3');\n     * // => false\n     */\n\n\n    function isInteger(value) {\n      return typeof value == 'number' && value == toInteger(value);\n    }\n    /**\n     * Checks if `value` is a valid array-like length.\n     *\n     * **Note:** This method is loosely based on\n     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.\n     * @example\n     *\n     * _.isLength(3);\n     * // => true\n     *\n     * _.isLength(Number.MIN_VALUE);\n     * // => false\n     *\n     * _.isLength(Infinity);\n     * // => false\n     *\n     * _.isLength('3');\n     * // => false\n     */\n\n\n    function isLength(value) {\n      return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n    }\n    /**\n     * Checks if `value` is the\n     * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n     * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n     * @example\n     *\n     * _.isObject({});\n     * // => true\n     *\n     * _.isObject([1, 2, 3]);\n     * // => true\n     *\n     * _.isObject(_.noop);\n     * // => true\n     *\n     * _.isObject(null);\n     * // => false\n     */\n\n\n    function isObject(value) {\n      var type = _typeof(value);\n\n      return value != null && (type == 'object' || type == 'function');\n    }\n    /**\n     * Checks if `value` is object-like. A value is object-like if it's not `null`\n     * and has a `typeof` result of \"object\".\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n     * @example\n     *\n     * _.isObjectLike({});\n     * // => true\n     *\n     * _.isObjectLike([1, 2, 3]);\n     * // => true\n     *\n     * _.isObjectLike(_.noop);\n     * // => false\n     *\n     * _.isObjectLike(null);\n     * // => false\n     */\n\n\n    function isObjectLike(value) {\n      return value != null && _typeof(value) == 'object';\n    }\n    /**\n     * Checks if `value` is classified as a `Map` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n     * @example\n     *\n     * _.isMap(new Map);\n     * // => true\n     *\n     * _.isMap(new WeakMap);\n     * // => false\n     */\n\n\n    var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;\n    /**\n     * Performs a partial deep comparison between `object` and `source` to\n     * determine if `object` contains equivalent property values.\n     *\n     * **Note:** This method is equivalent to `_.matches` when `source` is\n     * partially applied.\n     *\n     * Partial comparisons will match empty array and empty object `source`\n     * values against any array or object value, respectively. See `_.isEqual`\n     * for a list of supported value comparisons.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property values to match.\n     * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2 };\n     *\n     * _.isMatch(object, { 'b': 2 });\n     * // => true\n     *\n     * _.isMatch(object, { 'b': 1 });\n     * // => false\n     */\n\n    function isMatch(object, source) {\n      return object === source || baseIsMatch(object, source, getMatchData(source));\n    }\n    /**\n     * This method is like `_.isMatch` except that it accepts `customizer` which\n     * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n     * are handled by the method instead. The `customizer` is invoked with five\n     * arguments: (objValue, srcValue, index|key, object, source).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property values to match.\n     * @param {Function} [customizer] The function to customize comparisons.\n     * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n     * @example\n     *\n     * function isGreeting(value) {\n     *   return /^h(?:i|ello)$/.test(value);\n     * }\n     *\n     * function customizer(objValue, srcValue) {\n     *   if (isGreeting(objValue) && isGreeting(srcValue)) {\n     *     return true;\n     *   }\n     * }\n     *\n     * var object = { 'greeting': 'hello' };\n     * var source = { 'greeting': 'hi' };\n     *\n     * _.isMatchWith(object, source, customizer);\n     * // => true\n     */\n\n\n    function isMatchWith(object, source, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return baseIsMatch(object, source, getMatchData(source), customizer);\n    }\n    /**\n     * Checks if `value` is `NaN`.\n     *\n     * **Note:** This method is based on\n     * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as\n     * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for\n     * `undefined` and other non-number values.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n     * @example\n     *\n     * _.isNaN(NaN);\n     * // => true\n     *\n     * _.isNaN(new Number(NaN));\n     * // => true\n     *\n     * isNaN(undefined);\n     * // => true\n     *\n     * _.isNaN(undefined);\n     * // => false\n     */\n\n\n    function isNaN(value) {\n      // An `NaN` primitive is the only value that is not equal to itself.\n      // Perform the `toStringTag` check first to avoid errors with some\n      // ActiveX objects in IE.\n      return isNumber(value) && value != +value;\n    }\n    /**\n     * Checks if `value` is a pristine native function.\n     *\n     * **Note:** This method can't reliably detect native functions in the presence\n     * of the core-js package because core-js circumvents this kind of detection.\n     * Despite multiple requests, the core-js maintainer has made it clear: any\n     * attempt to fix the detection will be obstructed. As a result, we're left\n     * with little choice but to throw an error. Unfortunately, this also affects\n     * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),\n     * which rely on core-js.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a native function,\n     *  else `false`.\n     * @example\n     *\n     * _.isNative(Array.prototype.push);\n     * // => true\n     *\n     * _.isNative(_);\n     * // => false\n     */\n\n\n    function isNative(value) {\n      if (isMaskable(value)) {\n        throw new Error(CORE_ERROR_TEXT);\n      }\n\n      return baseIsNative(value);\n    }\n    /**\n     * Checks if `value` is `null`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is `null`, else `false`.\n     * @example\n     *\n     * _.isNull(null);\n     * // => true\n     *\n     * _.isNull(void 0);\n     * // => false\n     */\n\n\n    function isNull(value) {\n      return value === null;\n    }\n    /**\n     * Checks if `value` is `null` or `undefined`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is nullish, else `false`.\n     * @example\n     *\n     * _.isNil(null);\n     * // => true\n     *\n     * _.isNil(void 0);\n     * // => true\n     *\n     * _.isNil(NaN);\n     * // => false\n     */\n\n\n    function isNil(value) {\n      return value == null;\n    }\n    /**\n     * Checks if `value` is classified as a `Number` primitive or object.\n     *\n     * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are\n     * classified as numbers, use the `_.isFinite` method.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a number, else `false`.\n     * @example\n     *\n     * _.isNumber(3);\n     * // => true\n     *\n     * _.isNumber(Number.MIN_VALUE);\n     * // => true\n     *\n     * _.isNumber(Infinity);\n     * // => true\n     *\n     * _.isNumber('3');\n     * // => false\n     */\n\n\n    function isNumber(value) {\n      return typeof value == 'number' || isObjectLike(value) && baseGetTag(value) == numberTag;\n    }\n    /**\n     * Checks if `value` is a plain object, that is, an object created by the\n     * `Object` constructor or one with a `[[Prototype]]` of `null`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.8.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     * }\n     *\n     * _.isPlainObject(new Foo);\n     * // => false\n     *\n     * _.isPlainObject([1, 2, 3]);\n     * // => false\n     *\n     * _.isPlainObject({ 'x': 0, 'y': 0 });\n     * // => true\n     *\n     * _.isPlainObject(Object.create(null));\n     * // => true\n     */\n\n\n    function isPlainObject(value) {\n      if (!isObjectLike(value) || baseGetTag(value) != objectTag) {\n        return false;\n      }\n\n      var proto = getPrototype(value);\n\n      if (proto === null) {\n        return true;\n      }\n\n      var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;\n      return typeof Ctor == 'function' && Ctor instanceof Ctor && funcToString.call(Ctor) == objectCtorString;\n    }\n    /**\n     * Checks if `value` is classified as a `RegExp` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n     * @example\n     *\n     * _.isRegExp(/abc/);\n     * // => true\n     *\n     * _.isRegExp('/abc/');\n     * // => false\n     */\n\n\n    var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;\n    /**\n     * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754\n     * double precision number which isn't the result of a rounded unsafe integer.\n     *\n     * **Note:** This method is based on\n     * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.\n     * @example\n     *\n     * _.isSafeInteger(3);\n     * // => true\n     *\n     * _.isSafeInteger(Number.MIN_VALUE);\n     * // => false\n     *\n     * _.isSafeInteger(Infinity);\n     * // => false\n     *\n     * _.isSafeInteger('3');\n     * // => false\n     */\n\n    function isSafeInteger(value) {\n      return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;\n    }\n    /**\n     * Checks if `value` is classified as a `Set` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n     * @example\n     *\n     * _.isSet(new Set);\n     * // => true\n     *\n     * _.isSet(new WeakSet);\n     * // => false\n     */\n\n\n    var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;\n    /**\n     * Checks if `value` is classified as a `String` primitive or object.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a string, else `false`.\n     * @example\n     *\n     * _.isString('abc');\n     * // => true\n     *\n     * _.isString(1);\n     * // => false\n     */\n\n    function isString(value) {\n      return typeof value == 'string' || !isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag;\n    }\n    /**\n     * Checks if `value` is classified as a `Symbol` primitive or object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n     * @example\n     *\n     * _.isSymbol(Symbol.iterator);\n     * // => true\n     *\n     * _.isSymbol('abc');\n     * // => false\n     */\n\n\n    function isSymbol(value) {\n      return _typeof(value) == 'symbol' || isObjectLike(value) && baseGetTag(value) == symbolTag;\n    }\n    /**\n     * Checks if `value` is classified as a typed array.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n     * @example\n     *\n     * _.isTypedArray(new Uint8Array);\n     * // => true\n     *\n     * _.isTypedArray([]);\n     * // => false\n     */\n\n\n    var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;\n    /**\n     * Checks if `value` is `undefined`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.\n     * @example\n     *\n     * _.isUndefined(void 0);\n     * // => true\n     *\n     * _.isUndefined(null);\n     * // => false\n     */\n\n    function isUndefined(value) {\n      return value === undefined;\n    }\n    /**\n     * Checks if `value` is classified as a `WeakMap` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.\n     * @example\n     *\n     * _.isWeakMap(new WeakMap);\n     * // => true\n     *\n     * _.isWeakMap(new Map);\n     * // => false\n     */\n\n\n    function isWeakMap(value) {\n      return isObjectLike(value) && getTag(value) == weakMapTag;\n    }\n    /**\n     * Checks if `value` is classified as a `WeakSet` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.\n     * @example\n     *\n     * _.isWeakSet(new WeakSet);\n     * // => true\n     *\n     * _.isWeakSet(new Set);\n     * // => false\n     */\n\n\n    function isWeakSet(value) {\n      return isObjectLike(value) && baseGetTag(value) == weakSetTag;\n    }\n    /**\n     * Checks if `value` is less than `other`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.9.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is less than `other`,\n     *  else `false`.\n     * @see _.gt\n     * @example\n     *\n     * _.lt(1, 3);\n     * // => true\n     *\n     * _.lt(3, 3);\n     * // => false\n     *\n     * _.lt(3, 1);\n     * // => false\n     */\n\n\n    var lt = createRelationalOperation(baseLt);\n    /**\n     * Checks if `value` is less than or equal to `other`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.9.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is less than or equal to\n     *  `other`, else `false`.\n     * @see _.gte\n     * @example\n     *\n     * _.lte(1, 3);\n     * // => true\n     *\n     * _.lte(3, 3);\n     * // => true\n     *\n     * _.lte(3, 1);\n     * // => false\n     */\n\n    var lte = createRelationalOperation(function (value, other) {\n      return value <= other;\n    });\n    /**\n     * Converts `value` to an array.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {Array} Returns the converted array.\n     * @example\n     *\n     * _.toArray({ 'a': 1, 'b': 2 });\n     * // => [1, 2]\n     *\n     * _.toArray('abc');\n     * // => ['a', 'b', 'c']\n     *\n     * _.toArray(1);\n     * // => []\n     *\n     * _.toArray(null);\n     * // => []\n     */\n\n    function toArray(value) {\n      if (!value) {\n        return [];\n      }\n\n      if (isArrayLike(value)) {\n        return isString(value) ? stringToArray(value) : copyArray(value);\n      }\n\n      if (symIterator && value[symIterator]) {\n        return iteratorToArray(value[symIterator]());\n      }\n\n      var tag = getTag(value),\n          func = tag == mapTag ? mapToArray : tag == setTag ? setToArray : values;\n      return func(value);\n    }\n    /**\n     * Converts `value` to a finite number.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.12.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {number} Returns the converted number.\n     * @example\n     *\n     * _.toFinite(3.2);\n     * // => 3.2\n     *\n     * _.toFinite(Number.MIN_VALUE);\n     * // => 5e-324\n     *\n     * _.toFinite(Infinity);\n     * // => 1.7976931348623157e+308\n     *\n     * _.toFinite('3.2');\n     * // => 3.2\n     */\n\n\n    function toFinite(value) {\n      if (!value) {\n        return value === 0 ? value : 0;\n      }\n\n      value = toNumber(value);\n\n      if (value === INFINITY || value === -INFINITY) {\n        var sign = value < 0 ? -1 : 1;\n        return sign * MAX_INTEGER;\n      }\n\n      return value === value ? value : 0;\n    }\n    /**\n     * Converts `value` to an integer.\n     *\n     * **Note:** This method is loosely based on\n     * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {number} Returns the converted integer.\n     * @example\n     *\n     * _.toInteger(3.2);\n     * // => 3\n     *\n     * _.toInteger(Number.MIN_VALUE);\n     * // => 0\n     *\n     * _.toInteger(Infinity);\n     * // => 1.7976931348623157e+308\n     *\n     * _.toInteger('3.2');\n     * // => 3\n     */\n\n\n    function toInteger(value) {\n      var result = toFinite(value),\n          remainder = result % 1;\n      return result === result ? remainder ? result - remainder : result : 0;\n    }\n    /**\n     * Converts `value` to an integer suitable for use as the length of an\n     * array-like object.\n     *\n     * **Note:** This method is based on\n     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {number} Returns the converted integer.\n     * @example\n     *\n     * _.toLength(3.2);\n     * // => 3\n     *\n     * _.toLength(Number.MIN_VALUE);\n     * // => 0\n     *\n     * _.toLength(Infinity);\n     * // => 4294967295\n     *\n     * _.toLength('3.2');\n     * // => 3\n     */\n\n\n    function toLength(value) {\n      return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;\n    }\n    /**\n     * Converts `value` to a number.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to process.\n     * @returns {number} Returns the number.\n     * @example\n     *\n     * _.toNumber(3.2);\n     * // => 3.2\n     *\n     * _.toNumber(Number.MIN_VALUE);\n     * // => 5e-324\n     *\n     * _.toNumber(Infinity);\n     * // => Infinity\n     *\n     * _.toNumber('3.2');\n     * // => 3.2\n     */\n\n\n    function toNumber(value) {\n      if (typeof value == 'number') {\n        return value;\n      }\n\n      if (isSymbol(value)) {\n        return NAN;\n      }\n\n      if (isObject(value)) {\n        var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\n        value = isObject(other) ? other + '' : other;\n      }\n\n      if (typeof value != 'string') {\n        return value === 0 ? value : +value;\n      }\n\n      value = baseTrim(value);\n      var isBinary = reIsBinary.test(value);\n      return isBinary || reIsOctal.test(value) ? freeParseInt(value.slice(2), isBinary ? 2 : 8) : reIsBadHex.test(value) ? NAN : +value;\n    }\n    /**\n     * Converts `value` to a plain object flattening inherited enumerable string\n     * keyed properties of `value` to own properties of the plain object.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {Object} Returns the converted plain object.\n     * @example\n     *\n     * function Foo() {\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.assign({ 'a': 1 }, new Foo);\n     * // => { 'a': 1, 'b': 2 }\n     *\n     * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));\n     * // => { 'a': 1, 'b': 2, 'c': 3 }\n     */\n\n\n    function toPlainObject(value) {\n      return copyObject(value, keysIn(value));\n    }\n    /**\n     * Converts `value` to a safe integer. A safe integer can be compared and\n     * represented correctly.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {number} Returns the converted integer.\n     * @example\n     *\n     * _.toSafeInteger(3.2);\n     * // => 3\n     *\n     * _.toSafeInteger(Number.MIN_VALUE);\n     * // => 0\n     *\n     * _.toSafeInteger(Infinity);\n     * // => 9007199254740991\n     *\n     * _.toSafeInteger('3.2');\n     * // => 3\n     */\n\n\n    function toSafeInteger(value) {\n      return value ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER) : value === 0 ? value : 0;\n    }\n    /**\n     * Converts `value` to a string. An empty string is returned for `null`\n     * and `undefined` values. The sign of `-0` is preserved.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {string} Returns the converted string.\n     * @example\n     *\n     * _.toString(null);\n     * // => ''\n     *\n     * _.toString(-0);\n     * // => '-0'\n     *\n     * _.toString([1, 2, 3]);\n     * // => '1,2,3'\n     */\n\n\n    function toString(value) {\n      return value == null ? '' : baseToString(value);\n    }\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Assigns own enumerable string keyed properties of source objects to the\n     * destination object. Source objects are applied from left to right.\n     * Subsequent sources overwrite property assignments of previous sources.\n     *\n     * **Note:** This method mutates `object` and is loosely based on\n     * [`Object.assign`](https://mdn.io/Object/assign).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.10.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @see _.assignIn\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     * }\n     *\n     * function Bar() {\n     *   this.c = 3;\n     * }\n     *\n     * Foo.prototype.b = 2;\n     * Bar.prototype.d = 4;\n     *\n     * _.assign({ 'a': 0 }, new Foo, new Bar);\n     * // => { 'a': 1, 'c': 3 }\n     */\n\n\n    var assign = createAssigner(function (object, source) {\n      if (isPrototype(source) || isArrayLike(source)) {\n        copyObject(source, keys(source), object);\n        return;\n      }\n\n      for (var key in source) {\n        if (hasOwnProperty.call(source, key)) {\n          assignValue(object, key, source[key]);\n        }\n      }\n    });\n    /**\n     * This method is like `_.assign` except that it iterates over own and\n     * inherited source properties.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @alias extend\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @see _.assign\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     * }\n     *\n     * function Bar() {\n     *   this.c = 3;\n     * }\n     *\n     * Foo.prototype.b = 2;\n     * Bar.prototype.d = 4;\n     *\n     * _.assignIn({ 'a': 0 }, new Foo, new Bar);\n     * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }\n     */\n\n    var assignIn = createAssigner(function (object, source) {\n      copyObject(source, keysIn(source), object);\n    });\n    /**\n     * This method is like `_.assignIn` except that it accepts `customizer`\n     * which is invoked to produce the assigned values. If `customizer` returns\n     * `undefined`, assignment is handled by the method instead. The `customizer`\n     * is invoked with five arguments: (objValue, srcValue, key, object, source).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @alias extendWith\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} sources The source objects.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @see _.assignWith\n     * @example\n     *\n     * function customizer(objValue, srcValue) {\n     *   return _.isUndefined(objValue) ? srcValue : objValue;\n     * }\n     *\n     * var defaults = _.partialRight(_.assignInWith, customizer);\n     *\n     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n     * // => { 'a': 1, 'b': 2 }\n     */\n\n    var assignInWith = createAssigner(function (object, source, srcIndex, customizer) {\n      copyObject(source, keysIn(source), object, customizer);\n    });\n    /**\n     * This method is like `_.assign` except that it accepts `customizer`\n     * which is invoked to produce the assigned values. If `customizer` returns\n     * `undefined`, assignment is handled by the method instead. The `customizer`\n     * is invoked with five arguments: (objValue, srcValue, key, object, source).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} sources The source objects.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @see _.assignInWith\n     * @example\n     *\n     * function customizer(objValue, srcValue) {\n     *   return _.isUndefined(objValue) ? srcValue : objValue;\n     * }\n     *\n     * var defaults = _.partialRight(_.assignWith, customizer);\n     *\n     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n     * // => { 'a': 1, 'b': 2 }\n     */\n\n    var assignWith = createAssigner(function (object, source, srcIndex, customizer) {\n      copyObject(source, keys(source), object, customizer);\n    });\n    /**\n     * Creates an array of values corresponding to `paths` of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.0.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {...(string|string[])} [paths] The property paths to pick.\n     * @returns {Array} Returns the picked values.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n     *\n     * _.at(object, ['a[0].b.c', 'a[1]']);\n     * // => [3, 4]\n     */\n\n    var at = flatRest(baseAt);\n    /**\n     * Creates an object that inherits from the `prototype` object. If a\n     * `properties` object is given, its own enumerable string keyed properties\n     * are assigned to the created object.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.3.0\n     * @category Object\n     * @param {Object} prototype The object to inherit from.\n     * @param {Object} [properties] The properties to assign to the object.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * function Shape() {\n     *   this.x = 0;\n     *   this.y = 0;\n     * }\n     *\n     * function Circle() {\n     *   Shape.call(this);\n     * }\n     *\n     * Circle.prototype = _.create(Shape.prototype, {\n     *   'constructor': Circle\n     * });\n     *\n     * var circle = new Circle;\n     * circle instanceof Circle;\n     * // => true\n     *\n     * circle instanceof Shape;\n     * // => true\n     */\n\n    function create(prototype, properties) {\n      var result = baseCreate(prototype);\n      return properties == null ? result : baseAssign(result, properties);\n    }\n    /**\n     * Assigns own and inherited enumerable string keyed properties of source\n     * objects to the destination object for all destination properties that\n     * resolve to `undefined`. Source objects are applied from left to right.\n     * Once a property is set, additional values of the same property are ignored.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @see _.defaultsDeep\n     * @example\n     *\n     * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n     * // => { 'a': 1, 'b': 2 }\n     */\n\n\n    var defaults = baseRest(function (object, sources) {\n      object = Object(object);\n      var index = -1;\n      var length = sources.length;\n      var guard = length > 2 ? sources[2] : undefined;\n\n      if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n        length = 1;\n      }\n\n      while (++index < length) {\n        var source = sources[index];\n        var props = keysIn(source);\n        var propsIndex = -1;\n        var propsLength = props.length;\n\n        while (++propsIndex < propsLength) {\n          var key = props[propsIndex];\n          var value = object[key];\n\n          if (value === undefined || eq(value, objectProto[key]) && !hasOwnProperty.call(object, key)) {\n            object[key] = source[key];\n          }\n        }\n      }\n\n      return object;\n    });\n    /**\n     * This method is like `_.defaults` except that it recursively assigns\n     * default properties.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.10.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @see _.defaults\n     * @example\n     *\n     * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });\n     * // => { 'a': { 'b': 2, 'c': 3 } }\n     */\n\n    var defaultsDeep = baseRest(function (args) {\n      args.push(undefined, customDefaultsMerge);\n      return apply(mergeWith, undefined, args);\n    });\n    /**\n     * This method is like `_.find` except that it returns the key of the first\n     * element `predicate` returns truthy for instead of the element itself.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.1.0\n     * @category Object\n     * @param {Object} object The object to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {string|undefined} Returns the key of the matched element,\n     *  else `undefined`.\n     * @example\n     *\n     * var users = {\n     *   'barney':  { 'age': 36, 'active': true },\n     *   'fred':    { 'age': 40, 'active': false },\n     *   'pebbles': { 'age': 1,  'active': true }\n     * };\n     *\n     * _.findKey(users, function(o) { return o.age < 40; });\n     * // => 'barney' (iteration order is not guaranteed)\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.findKey(users, { 'age': 1, 'active': true });\n     * // => 'pebbles'\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.findKey(users, ['active', false]);\n     * // => 'fred'\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.findKey(users, 'active');\n     * // => 'barney'\n     */\n\n    function findKey(object, predicate) {\n      return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);\n    }\n    /**\n     * This method is like `_.findKey` except that it iterates over elements of\n     * a collection in the opposite order.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Object\n     * @param {Object} object The object to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {string|undefined} Returns the key of the matched element,\n     *  else `undefined`.\n     * @example\n     *\n     * var users = {\n     *   'barney':  { 'age': 36, 'active': true },\n     *   'fred':    { 'age': 40, 'active': false },\n     *   'pebbles': { 'age': 1,  'active': true }\n     * };\n     *\n     * _.findLastKey(users, function(o) { return o.age < 40; });\n     * // => returns 'pebbles' assuming `_.findKey` returns 'barney'\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.findLastKey(users, { 'age': 36, 'active': true });\n     * // => 'barney'\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.findLastKey(users, ['active', false]);\n     * // => 'fred'\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.findLastKey(users, 'active');\n     * // => 'pebbles'\n     */\n\n\n    function findLastKey(object, predicate) {\n      return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);\n    }\n    /**\n     * Iterates over own and inherited enumerable string keyed properties of an\n     * object and invokes `iteratee` for each property. The iteratee is invoked\n     * with three arguments: (value, key, object). Iteratee functions may exit\n     * iteration early by explicitly returning `false`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.3.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     * @see _.forInRight\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.forIn(new Foo, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).\n     */\n\n\n    function forIn(object, iteratee) {\n      return object == null ? object : baseFor(object, getIteratee(iteratee, 3), keysIn);\n    }\n    /**\n     * This method is like `_.forIn` except that it iterates over properties of\n     * `object` in the opposite order.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     * @see _.forIn\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.forInRight(new Foo, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.\n     */\n\n\n    function forInRight(object, iteratee) {\n      return object == null ? object : baseForRight(object, getIteratee(iteratee, 3), keysIn);\n    }\n    /**\n     * Iterates over own enumerable string keyed properties of an object and\n     * invokes `iteratee` for each property. The iteratee is invoked with three\n     * arguments: (value, key, object). Iteratee functions may exit iteration\n     * early by explicitly returning `false`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.3.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     * @see _.forOwnRight\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.forOwn(new Foo, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n     */\n\n\n    function forOwn(object, iteratee) {\n      return object && baseForOwn(object, getIteratee(iteratee, 3));\n    }\n    /**\n     * This method is like `_.forOwn` except that it iterates over properties of\n     * `object` in the opposite order.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     * @see _.forOwn\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.forOwnRight(new Foo, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.\n     */\n\n\n    function forOwnRight(object, iteratee) {\n      return object && baseForOwnRight(object, getIteratee(iteratee, 3));\n    }\n    /**\n     * Creates an array of function property names from own enumerable properties\n     * of `object`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to inspect.\n     * @returns {Array} Returns the function names.\n     * @see _.functionsIn\n     * @example\n     *\n     * function Foo() {\n     *   this.a = _.constant('a');\n     *   this.b = _.constant('b');\n     * }\n     *\n     * Foo.prototype.c = _.constant('c');\n     *\n     * _.functions(new Foo);\n     * // => ['a', 'b']\n     */\n\n\n    function functions(object) {\n      return object == null ? [] : baseFunctions(object, keys(object));\n    }\n    /**\n     * Creates an array of function property names from own and inherited\n     * enumerable properties of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to inspect.\n     * @returns {Array} Returns the function names.\n     * @see _.functions\n     * @example\n     *\n     * function Foo() {\n     *   this.a = _.constant('a');\n     *   this.b = _.constant('b');\n     * }\n     *\n     * Foo.prototype.c = _.constant('c');\n     *\n     * _.functionsIn(new Foo);\n     * // => ['a', 'b', 'c']\n     */\n\n\n    function functionsIn(object) {\n      return object == null ? [] : baseFunctions(object, keysIn(object));\n    }\n    /**\n     * Gets the value at `path` of `object`. If the resolved value is\n     * `undefined`, the `defaultValue` is returned in its place.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.7.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the property to get.\n     * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n     * @returns {*} Returns the resolved value.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n     *\n     * _.get(object, 'a[0].b.c');\n     * // => 3\n     *\n     * _.get(object, ['a', '0', 'b', 'c']);\n     * // => 3\n     *\n     * _.get(object, 'a.b.c', 'default');\n     * // => 'default'\n     */\n\n\n    function get(object, path, defaultValue) {\n      var result = object == null ? undefined : baseGet(object, path);\n      return result === undefined ? defaultValue : result;\n    }\n    /**\n     * Checks if `path` is a direct property of `object`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path to check.\n     * @returns {boolean} Returns `true` if `path` exists, else `false`.\n     * @example\n     *\n     * var object = { 'a': { 'b': 2 } };\n     * var other = _.create({ 'a': _.create({ 'b': 2 }) });\n     *\n     * _.has(object, 'a');\n     * // => true\n     *\n     * _.has(object, 'a.b');\n     * // => true\n     *\n     * _.has(object, ['a', 'b']);\n     * // => true\n     *\n     * _.has(other, 'a');\n     * // => false\n     */\n\n\n    function has(object, path) {\n      return object != null && hasPath(object, path, baseHas);\n    }\n    /**\n     * Checks if `path` is a direct or inherited property of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path to check.\n     * @returns {boolean} Returns `true` if `path` exists, else `false`.\n     * @example\n     *\n     * var object = _.create({ 'a': _.create({ 'b': 2 }) });\n     *\n     * _.hasIn(object, 'a');\n     * // => true\n     *\n     * _.hasIn(object, 'a.b');\n     * // => true\n     *\n     * _.hasIn(object, ['a', 'b']);\n     * // => true\n     *\n     * _.hasIn(object, 'b');\n     * // => false\n     */\n\n\n    function hasIn(object, path) {\n      return object != null && hasPath(object, path, baseHasIn);\n    }\n    /**\n     * Creates an object composed of the inverted keys and values of `object`.\n     * If `object` contains duplicate values, subsequent values overwrite\n     * property assignments of previous values.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.7.0\n     * @category Object\n     * @param {Object} object The object to invert.\n     * @returns {Object} Returns the new inverted object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2, 'c': 1 };\n     *\n     * _.invert(object);\n     * // => { '1': 'c', '2': 'b' }\n     */\n\n\n    var invert = createInverter(function (result, value, key) {\n      if (value != null && typeof value.toString != 'function') {\n        value = nativeObjectToString.call(value);\n      }\n\n      result[value] = key;\n    }, constant(identity));\n    /**\n     * This method is like `_.invert` except that the inverted object is generated\n     * from the results of running each element of `object` thru `iteratee`. The\n     * corresponding inverted value of each inverted key is an array of keys\n     * responsible for generating the inverted value. The iteratee is invoked\n     * with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.1.0\n     * @category Object\n     * @param {Object} object The object to invert.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Object} Returns the new inverted object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2, 'c': 1 };\n     *\n     * _.invertBy(object);\n     * // => { '1': ['a', 'c'], '2': ['b'] }\n     *\n     * _.invertBy(object, function(value) {\n     *   return 'group' + value;\n     * });\n     * // => { 'group1': ['a', 'c'], 'group2': ['b'] }\n     */\n\n    var invertBy = createInverter(function (result, value, key) {\n      if (value != null && typeof value.toString != 'function') {\n        value = nativeObjectToString.call(value);\n      }\n\n      if (hasOwnProperty.call(result, value)) {\n        result[value].push(key);\n      } else {\n        result[value] = [key];\n      }\n    }, getIteratee);\n    /**\n     * Invokes the method at `path` of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the method to invoke.\n     * @param {...*} [args] The arguments to invoke the method with.\n     * @returns {*} Returns the result of the invoked method.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };\n     *\n     * _.invoke(object, 'a[0].b.c.slice', 1, 3);\n     * // => [2, 3]\n     */\n\n    var invoke = baseRest(baseInvoke);\n    /**\n     * Creates an array of the own enumerable property names of `object`.\n     *\n     * **Note:** Non-object values are coerced to objects. See the\n     * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n     * for more details.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.keys(new Foo);\n     * // => ['a', 'b'] (iteration order is not guaranteed)\n     *\n     * _.keys('hi');\n     * // => ['0', '1']\n     */\n\n    function keys(object) {\n      return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);\n    }\n    /**\n     * Creates an array of the own and inherited enumerable property names of `object`.\n     *\n     * **Note:** Non-object values are coerced to objects.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.keysIn(new Foo);\n     * // => ['a', 'b', 'c'] (iteration order is not guaranteed)\n     */\n\n\n    function keysIn(object) {\n      return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);\n    }\n    /**\n     * The opposite of `_.mapValues`; this method creates an object with the\n     * same values as `object` and keys generated by running each own enumerable\n     * string keyed property of `object` thru `iteratee`. The iteratee is invoked\n     * with three arguments: (value, key, object).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.8.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns the new mapped object.\n     * @see _.mapValues\n     * @example\n     *\n     * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {\n     *   return key + value;\n     * });\n     * // => { 'a1': 1, 'b2': 2 }\n     */\n\n\n    function mapKeys(object, iteratee) {\n      var result = {};\n      iteratee = getIteratee(iteratee, 3);\n      baseForOwn(object, function (value, key, object) {\n        baseAssignValue(result, iteratee(value, key, object), value);\n      });\n      return result;\n    }\n    /**\n     * Creates an object with the same keys as `object` and values generated\n     * by running each own enumerable string keyed property of `object` thru\n     * `iteratee`. The iteratee is invoked with three arguments:\n     * (value, key, object).\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns the new mapped object.\n     * @see _.mapKeys\n     * @example\n     *\n     * var users = {\n     *   'fred':    { 'user': 'fred',    'age': 40 },\n     *   'pebbles': { 'user': 'pebbles', 'age': 1 }\n     * };\n     *\n     * _.mapValues(users, function(o) { return o.age; });\n     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.mapValues(users, 'age');\n     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n     */\n\n\n    function mapValues(object, iteratee) {\n      var result = {};\n      iteratee = getIteratee(iteratee, 3);\n      baseForOwn(object, function (value, key, object) {\n        baseAssignValue(result, key, iteratee(value, key, object));\n      });\n      return result;\n    }\n    /**\n     * This method is like `_.assign` except that it recursively merges own and\n     * inherited enumerable string keyed properties of source objects into the\n     * destination object. Source properties that resolve to `undefined` are\n     * skipped if a destination value exists. Array and plain object properties\n     * are merged recursively. Other objects and value types are overridden by\n     * assignment. Source objects are applied from left to right. Subsequent\n     * sources overwrite property assignments of previous sources.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.5.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = {\n     *   'a': [{ 'b': 2 }, { 'd': 4 }]\n     * };\n     *\n     * var other = {\n     *   'a': [{ 'c': 3 }, { 'e': 5 }]\n     * };\n     *\n     * _.merge(object, other);\n     * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }\n     */\n\n\n    var merge = createAssigner(function (object, source, srcIndex) {\n      baseMerge(object, source, srcIndex);\n    });\n    /**\n     * This method is like `_.merge` except that it accepts `customizer` which\n     * is invoked to produce the merged values of the destination and source\n     * properties. If `customizer` returns `undefined`, merging is handled by the\n     * method instead. The `customizer` is invoked with six arguments:\n     * (objValue, srcValue, key, object, source, stack).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} sources The source objects.\n     * @param {Function} customizer The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * function customizer(objValue, srcValue) {\n     *   if (_.isArray(objValue)) {\n     *     return objValue.concat(srcValue);\n     *   }\n     * }\n     *\n     * var object = { 'a': [1], 'b': [2] };\n     * var other = { 'a': [3], 'b': [4] };\n     *\n     * _.mergeWith(object, other, customizer);\n     * // => { 'a': [1, 3], 'b': [2, 4] }\n     */\n\n    var mergeWith = createAssigner(function (object, source, srcIndex, customizer) {\n      baseMerge(object, source, srcIndex, customizer);\n    });\n    /**\n     * The opposite of `_.pick`; this method creates an object composed of the\n     * own and inherited enumerable property paths of `object` that are not omitted.\n     *\n     * **Note:** This method is considerably slower than `_.pick`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The source object.\n     * @param {...(string|string[])} [paths] The property paths to omit.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': '2', 'c': 3 };\n     *\n     * _.omit(object, ['a', 'c']);\n     * // => { 'b': '2' }\n     */\n\n    var omit = flatRest(function (object, paths) {\n      var result = {};\n\n      if (object == null) {\n        return result;\n      }\n\n      var isDeep = false;\n      paths = arrayMap(paths, function (path) {\n        path = castPath(path, object);\n        isDeep || (isDeep = path.length > 1);\n        return path;\n      });\n      copyObject(object, getAllKeysIn(object), result);\n\n      if (isDeep) {\n        result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);\n      }\n\n      var length = paths.length;\n\n      while (length--) {\n        baseUnset(result, paths[length]);\n      }\n\n      return result;\n    });\n    /**\n     * The opposite of `_.pickBy`; this method creates an object composed of\n     * the own and inherited enumerable string keyed properties of `object` that\n     * `predicate` doesn't return truthy for. The predicate is invoked with two\n     * arguments: (value, key).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The source object.\n     * @param {Function} [predicate=_.identity] The function invoked per property.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': '2', 'c': 3 };\n     *\n     * _.omitBy(object, _.isNumber);\n     * // => { 'b': '2' }\n     */\n\n    function omitBy(object, predicate) {\n      return pickBy(object, negate(getIteratee(predicate)));\n    }\n    /**\n     * Creates an object composed of the picked `object` properties.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The source object.\n     * @param {...(string|string[])} [paths] The property paths to pick.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': '2', 'c': 3 };\n     *\n     * _.pick(object, ['a', 'c']);\n     * // => { 'a': 1, 'c': 3 }\n     */\n\n\n    var pick = flatRest(function (object, paths) {\n      return object == null ? {} : basePick(object, paths);\n    });\n    /**\n     * Creates an object composed of the `object` properties `predicate` returns\n     * truthy for. The predicate is invoked with two arguments: (value, key).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The source object.\n     * @param {Function} [predicate=_.identity] The function invoked per property.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': '2', 'c': 3 };\n     *\n     * _.pickBy(object, _.isNumber);\n     * // => { 'a': 1, 'c': 3 }\n     */\n\n    function pickBy(object, predicate) {\n      if (object == null) {\n        return {};\n      }\n\n      var props = arrayMap(getAllKeysIn(object), function (prop) {\n        return [prop];\n      });\n      predicate = getIteratee(predicate);\n      return basePickBy(object, props, function (value, path) {\n        return predicate(value, path[0]);\n      });\n    }\n    /**\n     * This method is like `_.get` except that if the resolved value is a\n     * function it's invoked with the `this` binding of its parent object and\n     * its result is returned.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the property to resolve.\n     * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n     * @returns {*} Returns the resolved value.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };\n     *\n     * _.result(object, 'a[0].b.c1');\n     * // => 3\n     *\n     * _.result(object, 'a[0].b.c2');\n     * // => 4\n     *\n     * _.result(object, 'a[0].b.c3', 'default');\n     * // => 'default'\n     *\n     * _.result(object, 'a[0].b.c3', _.constant('default'));\n     * // => 'default'\n     */\n\n\n    function result(object, path, defaultValue) {\n      path = castPath(path, object);\n      var index = -1,\n          length = path.length; // Ensure the loop is entered when path is empty.\n\n      if (!length) {\n        length = 1;\n        object = undefined;\n      }\n\n      while (++index < length) {\n        var value = object == null ? undefined : object[toKey(path[index])];\n\n        if (value === undefined) {\n          index = length;\n          value = defaultValue;\n        }\n\n        object = isFunction(value) ? value.call(object) : value;\n      }\n\n      return object;\n    }\n    /**\n     * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,\n     * it's created. Arrays are created for missing index properties while objects\n     * are created for all other missing properties. Use `_.setWith` to customize\n     * `path` creation.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.7.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n     *\n     * _.set(object, 'a[0].b.c', 4);\n     * console.log(object.a[0].b.c);\n     * // => 4\n     *\n     * _.set(object, ['x', '0', 'y', 'z'], 5);\n     * console.log(object.x[0].y.z);\n     * // => 5\n     */\n\n\n    function set(object, path, value) {\n      return object == null ? object : baseSet(object, path, value);\n    }\n    /**\n     * This method is like `_.set` except that it accepts `customizer` which is\n     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`\n     * path creation is handled by the method instead. The `customizer` is invoked\n     * with three arguments: (nsValue, key, nsObject).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {*} value The value to set.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = {};\n     *\n     * _.setWith(object, '[0][1]', 'a', Object);\n     * // => { '0': { '1': 'a' } }\n     */\n\n\n    function setWith(object, path, value, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return object == null ? object : baseSet(object, path, value, customizer);\n    }\n    /**\n     * Creates an array of own enumerable string keyed-value pairs for `object`\n     * which can be consumed by `_.fromPairs`. If `object` is a map or set, its\n     * entries are returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @alias entries\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the key-value pairs.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.toPairs(new Foo);\n     * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)\n     */\n\n\n    var toPairs = createToPairs(keys);\n    /**\n     * Creates an array of own and inherited enumerable string keyed-value pairs\n     * for `object` which can be consumed by `_.fromPairs`. If `object` is a map\n     * or set, its entries are returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @alias entriesIn\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the key-value pairs.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.toPairsIn(new Foo);\n     * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)\n     */\n\n    var toPairsIn = createToPairs(keysIn);\n    /**\n     * An alternative to `_.reduce`; this method transforms `object` to a new\n     * `accumulator` object which is the result of running each of its own\n     * enumerable string keyed properties thru `iteratee`, with each invocation\n     * potentially mutating the `accumulator` object. If `accumulator` is not\n     * provided, a new object with the same `[[Prototype]]` will be used. The\n     * iteratee is invoked with four arguments: (accumulator, value, key, object).\n     * Iteratee functions may exit iteration early by explicitly returning `false`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.3.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @param {*} [accumulator] The custom accumulator value.\n     * @returns {*} Returns the accumulated value.\n     * @example\n     *\n     * _.transform([2, 3, 4], function(result, n) {\n     *   result.push(n *= n);\n     *   return n % 2 == 0;\n     * }, []);\n     * // => [4, 9]\n     *\n     * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n     *   (result[value] || (result[value] = [])).push(key);\n     * }, {});\n     * // => { '1': ['a', 'c'], '2': ['b'] }\n     */\n\n    function transform(object, iteratee, accumulator) {\n      var isArr = isArray(object),\n          isArrLike = isArr || isBuffer(object) || isTypedArray(object);\n      iteratee = getIteratee(iteratee, 4);\n\n      if (accumulator == null) {\n        var Ctor = object && object.constructor;\n\n        if (isArrLike) {\n          accumulator = isArr ? new Ctor() : [];\n        } else if (isObject(object)) {\n          accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};\n        } else {\n          accumulator = {};\n        }\n      }\n\n      (isArrLike ? arrayEach : baseForOwn)(object, function (value, index, object) {\n        return iteratee(accumulator, value, index, object);\n      });\n      return accumulator;\n    }\n    /**\n     * Removes the property at `path` of `object`.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to unset.\n     * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 7 } }] };\n     * _.unset(object, 'a[0].b.c');\n     * // => true\n     *\n     * console.log(object);\n     * // => { 'a': [{ 'b': {} }] };\n     *\n     * _.unset(object, ['a', '0', 'b', 'c']);\n     * // => true\n     *\n     * console.log(object);\n     * // => { 'a': [{ 'b': {} }] };\n     */\n\n\n    function unset(object, path) {\n      return object == null ? true : baseUnset(object, path);\n    }\n    /**\n     * This method is like `_.set` except that accepts `updater` to produce the\n     * value to set. Use `_.updateWith` to customize `path` creation. The `updater`\n     * is invoked with one argument: (value).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.6.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {Function} updater The function to produce the updated value.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n     *\n     * _.update(object, 'a[0].b.c', function(n) { return n * n; });\n     * console.log(object.a[0].b.c);\n     * // => 9\n     *\n     * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });\n     * console.log(object.x[0].y.z);\n     * // => 0\n     */\n\n\n    function update(object, path, updater) {\n      return object == null ? object : baseUpdate(object, path, castFunction(updater));\n    }\n    /**\n     * This method is like `_.update` except that it accepts `customizer` which is\n     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`\n     * path creation is handled by the method instead. The `customizer` is invoked\n     * with three arguments: (nsValue, key, nsObject).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.6.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {Function} updater The function to produce the updated value.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = {};\n     *\n     * _.updateWith(object, '[0][1]', _.constant('a'), Object);\n     * // => { '0': { '1': 'a' } }\n     */\n\n\n    function updateWith(object, path, updater, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);\n    }\n    /**\n     * Creates an array of the own enumerable string keyed property values of `object`.\n     *\n     * **Note:** Non-object values are coerced to objects.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property values.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.values(new Foo);\n     * // => [1, 2] (iteration order is not guaranteed)\n     *\n     * _.values('hi');\n     * // => ['h', 'i']\n     */\n\n\n    function values(object) {\n      return object == null ? [] : baseValues(object, keys(object));\n    }\n    /**\n     * Creates an array of the own and inherited enumerable string keyed property\n     * values of `object`.\n     *\n     * **Note:** Non-object values are coerced to objects.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property values.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.valuesIn(new Foo);\n     * // => [1, 2, 3] (iteration order is not guaranteed)\n     */\n\n\n    function valuesIn(object) {\n      return object == null ? [] : baseValues(object, keysIn(object));\n    }\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Clamps `number` within the inclusive `lower` and `upper` bounds.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Number\n     * @param {number} number The number to clamp.\n     * @param {number} [lower] The lower bound.\n     * @param {number} upper The upper bound.\n     * @returns {number} Returns the clamped number.\n     * @example\n     *\n     * _.clamp(-10, -5, 5);\n     * // => -5\n     *\n     * _.clamp(10, -5, 5);\n     * // => 5\n     */\n\n\n    function clamp(number, lower, upper) {\n      if (upper === undefined) {\n        upper = lower;\n        lower = undefined;\n      }\n\n      if (upper !== undefined) {\n        upper = toNumber(upper);\n        upper = upper === upper ? upper : 0;\n      }\n\n      if (lower !== undefined) {\n        lower = toNumber(lower);\n        lower = lower === lower ? lower : 0;\n      }\n\n      return baseClamp(toNumber(number), lower, upper);\n    }\n    /**\n     * Checks if `n` is between `start` and up to, but not including, `end`. If\n     * `end` is not specified, it's set to `start` with `start` then set to `0`.\n     * If `start` is greater than `end` the params are swapped to support\n     * negative ranges.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.3.0\n     * @category Number\n     * @param {number} number The number to check.\n     * @param {number} [start=0] The start of the range.\n     * @param {number} end The end of the range.\n     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\n     * @see _.range, _.rangeRight\n     * @example\n     *\n     * _.inRange(3, 2, 4);\n     * // => true\n     *\n     * _.inRange(4, 8);\n     * // => true\n     *\n     * _.inRange(4, 2);\n     * // => false\n     *\n     * _.inRange(2, 2);\n     * // => false\n     *\n     * _.inRange(1.2, 2);\n     * // => true\n     *\n     * _.inRange(5.2, 4);\n     * // => false\n     *\n     * _.inRange(-3, -2, -6);\n     * // => true\n     */\n\n\n    function inRange(number, start, end) {\n      start = toFinite(start);\n\n      if (end === undefined) {\n        end = start;\n        start = 0;\n      } else {\n        end = toFinite(end);\n      }\n\n      number = toNumber(number);\n      return baseInRange(number, start, end);\n    }\n    /**\n     * Produces a random number between the inclusive `lower` and `upper` bounds.\n     * If only one argument is provided a number between `0` and the given number\n     * is returned. If `floating` is `true`, or either `lower` or `upper` are\n     * floats, a floating-point number is returned instead of an integer.\n     *\n     * **Note:** JavaScript follows the IEEE-754 standard for resolving\n     * floating-point values which can produce unexpected results.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.7.0\n     * @category Number\n     * @param {number} [lower=0] The lower bound.\n     * @param {number} [upper=1] The upper bound.\n     * @param {boolean} [floating] Specify returning a floating-point number.\n     * @returns {number} Returns the random number.\n     * @example\n     *\n     * _.random(0, 5);\n     * // => an integer between 0 and 5\n     *\n     * _.random(5);\n     * // => also an integer between 0 and 5\n     *\n     * _.random(5, true);\n     * // => a floating-point number between 0 and 5\n     *\n     * _.random(1.2, 5.2);\n     * // => a floating-point number between 1.2 and 5.2\n     */\n\n\n    function random(lower, upper, floating) {\n      if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {\n        upper = floating = undefined;\n      }\n\n      if (floating === undefined) {\n        if (typeof upper == 'boolean') {\n          floating = upper;\n          upper = undefined;\n        } else if (typeof lower == 'boolean') {\n          floating = lower;\n          lower = undefined;\n        }\n      }\n\n      if (lower === undefined && upper === undefined) {\n        lower = 0;\n        upper = 1;\n      } else {\n        lower = toFinite(lower);\n\n        if (upper === undefined) {\n          upper = lower;\n          lower = 0;\n        } else {\n          upper = toFinite(upper);\n        }\n      }\n\n      if (lower > upper) {\n        var temp = lower;\n        lower = upper;\n        upper = temp;\n      }\n\n      if (floating || lower % 1 || upper % 1) {\n        var rand = nativeRandom();\n        return nativeMin(lower + rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1))), upper);\n      }\n\n      return baseRandom(lower, upper);\n    }\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the camel cased string.\n     * @example\n     *\n     * _.camelCase('Foo Bar');\n     * // => 'fooBar'\n     *\n     * _.camelCase('--foo-bar--');\n     * // => 'fooBar'\n     *\n     * _.camelCase('__FOO_BAR__');\n     * // => 'fooBar'\n     */\n\n\n    var camelCase = createCompounder(function (result, word, index) {\n      word = word.toLowerCase();\n      return result + (index ? capitalize(word) : word);\n    });\n    /**\n     * Converts the first character of `string` to upper case and the remaining\n     * to lower case.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to capitalize.\n     * @returns {string} Returns the capitalized string.\n     * @example\n     *\n     * _.capitalize('FRED');\n     * // => 'Fred'\n     */\n\n    function capitalize(string) {\n      return upperFirst(toString(string).toLowerCase());\n    }\n    /**\n     * Deburrs `string` by converting\n     * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)\n     * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)\n     * letters to basic Latin letters and removing\n     * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to deburr.\n     * @returns {string} Returns the deburred string.\n     * @example\n     *\n     * _.deburr('déjà vu');\n     * // => 'deja vu'\n     */\n\n\n    function deburr(string) {\n      string = toString(string);\n      return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');\n    }\n    /**\n     * Checks if `string` ends with the given target string.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to inspect.\n     * @param {string} [target] The string to search for.\n     * @param {number} [position=string.length] The position to search up to.\n     * @returns {boolean} Returns `true` if `string` ends with `target`,\n     *  else `false`.\n     * @example\n     *\n     * _.endsWith('abc', 'c');\n     * // => true\n     *\n     * _.endsWith('abc', 'b');\n     * // => false\n     *\n     * _.endsWith('abc', 'b', 2);\n     * // => true\n     */\n\n\n    function endsWith(string, target, position) {\n      string = toString(string);\n      target = baseToString(target);\n      var length = string.length;\n      position = position === undefined ? length : baseClamp(toInteger(position), 0, length);\n      var end = position;\n      position -= target.length;\n      return position >= 0 && string.slice(position, end) == target;\n    }\n    /**\n     * Converts the characters \"&\", \"<\", \">\", '\"', and \"'\" in `string` to their\n     * corresponding HTML entities.\n     *\n     * **Note:** No other characters are escaped. To escape additional\n     * characters use a third-party library like [_he_](https://mths.be/he).\n     *\n     * Though the \">\" character is escaped for symmetry, characters like\n     * \">\" and \"/\" don't need escaping in HTML and have no special meaning\n     * unless they're part of a tag or unquoted attribute value. See\n     * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)\n     * (under \"semi-related fun fact\") for more details.\n     *\n     * When working with HTML you should always\n     * [quote attribute values](http://wonko.com/post/html-escaping) to reduce\n     * XSS vectors.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category String\n     * @param {string} [string=''] The string to escape.\n     * @returns {string} Returns the escaped string.\n     * @example\n     *\n     * _.escape('fred, barney, & pebbles');\n     * // => 'fred, barney, &amp; pebbles'\n     */\n\n\n    function escape(string) {\n      string = toString(string);\n      return string && reHasUnescapedHtml.test(string) ? string.replace(reUnescapedHtml, escapeHtmlChar) : string;\n    }\n    /**\n     * Escapes the `RegExp` special characters \"^\", \"$\", \"\\\", \".\", \"*\", \"+\",\n     * \"?\", \"(\", \")\", \"[\", \"]\", \"{\", \"}\", and \"|\" in `string`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to escape.\n     * @returns {string} Returns the escaped string.\n     * @example\n     *\n     * _.escapeRegExp('[lodash](https://lodash.com/)');\n     * // => '\\[lodash\\]\\(https://lodash\\.com/\\)'\n     */\n\n\n    function escapeRegExp(string) {\n      string = toString(string);\n      return string && reHasRegExpChar.test(string) ? string.replace(reRegExpChar, '\\\\$&') : string;\n    }\n    /**\n     * Converts `string` to\n     * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the kebab cased string.\n     * @example\n     *\n     * _.kebabCase('Foo Bar');\n     * // => 'foo-bar'\n     *\n     * _.kebabCase('fooBar');\n     * // => 'foo-bar'\n     *\n     * _.kebabCase('__FOO_BAR__');\n     * // => 'foo-bar'\n     */\n\n\n    var kebabCase = createCompounder(function (result, word, index) {\n      return result + (index ? '-' : '') + word.toLowerCase();\n    });\n    /**\n     * Converts `string`, as space separated words, to lower case.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the lower cased string.\n     * @example\n     *\n     * _.lowerCase('--Foo-Bar--');\n     * // => 'foo bar'\n     *\n     * _.lowerCase('fooBar');\n     * // => 'foo bar'\n     *\n     * _.lowerCase('__FOO_BAR__');\n     * // => 'foo bar'\n     */\n\n    var lowerCase = createCompounder(function (result, word, index) {\n      return result + (index ? ' ' : '') + word.toLowerCase();\n    });\n    /**\n     * Converts the first character of `string` to lower case.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the converted string.\n     * @example\n     *\n     * _.lowerFirst('Fred');\n     * // => 'fred'\n     *\n     * _.lowerFirst('FRED');\n     * // => 'fRED'\n     */\n\n    var lowerFirst = createCaseFirst('toLowerCase');\n    /**\n     * Pads `string` on the left and right sides if it's shorter than `length`.\n     * Padding characters are truncated if they can't be evenly divided by `length`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to pad.\n     * @param {number} [length=0] The padding length.\n     * @param {string} [chars=' '] The string used as padding.\n     * @returns {string} Returns the padded string.\n     * @example\n     *\n     * _.pad('abc', 8);\n     * // => '  abc   '\n     *\n     * _.pad('abc', 8, '_-');\n     * // => '_-abc_-_'\n     *\n     * _.pad('abc', 3);\n     * // => 'abc'\n     */\n\n    function pad(string, length, chars) {\n      string = toString(string);\n      length = toInteger(length);\n      var strLength = length ? stringSize(string) : 0;\n\n      if (!length || strLength >= length) {\n        return string;\n      }\n\n      var mid = (length - strLength) / 2;\n      return createPadding(nativeFloor(mid), chars) + string + createPadding(nativeCeil(mid), chars);\n    }\n    /**\n     * Pads `string` on the right side if it's shorter than `length`. Padding\n     * characters are truncated if they exceed `length`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to pad.\n     * @param {number} [length=0] The padding length.\n     * @param {string} [chars=' '] The string used as padding.\n     * @returns {string} Returns the padded string.\n     * @example\n     *\n     * _.padEnd('abc', 6);\n     * // => 'abc   '\n     *\n     * _.padEnd('abc', 6, '_-');\n     * // => 'abc_-_'\n     *\n     * _.padEnd('abc', 3);\n     * // => 'abc'\n     */\n\n\n    function padEnd(string, length, chars) {\n      string = toString(string);\n      length = toInteger(length);\n      var strLength = length ? stringSize(string) : 0;\n      return length && strLength < length ? string + createPadding(length - strLength, chars) : string;\n    }\n    /**\n     * Pads `string` on the left side if it's shorter than `length`. Padding\n     * characters are truncated if they exceed `length`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to pad.\n     * @param {number} [length=0] The padding length.\n     * @param {string} [chars=' '] The string used as padding.\n     * @returns {string} Returns the padded string.\n     * @example\n     *\n     * _.padStart('abc', 6);\n     * // => '   abc'\n     *\n     * _.padStart('abc', 6, '_-');\n     * // => '_-_abc'\n     *\n     * _.padStart('abc', 3);\n     * // => 'abc'\n     */\n\n\n    function padStart(string, length, chars) {\n      string = toString(string);\n      length = toInteger(length);\n      var strLength = length ? stringSize(string) : 0;\n      return length && strLength < length ? createPadding(length - strLength, chars) + string : string;\n    }\n    /**\n     * Converts `string` to an integer of the specified radix. If `radix` is\n     * `undefined` or `0`, a `radix` of `10` is used unless `value` is a\n     * hexadecimal, in which case a `radix` of `16` is used.\n     *\n     * **Note:** This method aligns with the\n     * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.1.0\n     * @category String\n     * @param {string} string The string to convert.\n     * @param {number} [radix=10] The radix to interpret `value` by.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {number} Returns the converted integer.\n     * @example\n     *\n     * _.parseInt('08');\n     * // => 8\n     *\n     * _.map(['6', '08', '10'], _.parseInt);\n     * // => [6, 8, 10]\n     */\n\n\n    function parseInt(string, radix, guard) {\n      if (guard || radix == null) {\n        radix = 0;\n      } else if (radix) {\n        radix = +radix;\n      }\n\n      return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);\n    }\n    /**\n     * Repeats the given string `n` times.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to repeat.\n     * @param {number} [n=1] The number of times to repeat the string.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {string} Returns the repeated string.\n     * @example\n     *\n     * _.repeat('*', 3);\n     * // => '***'\n     *\n     * _.repeat('abc', 2);\n     * // => 'abcabc'\n     *\n     * _.repeat('abc', 0);\n     * // => ''\n     */\n\n\n    function repeat(string, n, guard) {\n      if (guard ? isIterateeCall(string, n, guard) : n === undefined) {\n        n = 1;\n      } else {\n        n = toInteger(n);\n      }\n\n      return baseRepeat(toString(string), n);\n    }\n    /**\n     * Replaces matches for `pattern` in `string` with `replacement`.\n     *\n     * **Note:** This method is based on\n     * [`String#replace`](https://mdn.io/String/replace).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to modify.\n     * @param {RegExp|string} pattern The pattern to replace.\n     * @param {Function|string} replacement The match replacement.\n     * @returns {string} Returns the modified string.\n     * @example\n     *\n     * _.replace('Hi Fred', 'Fred', 'Barney');\n     * // => 'Hi Barney'\n     */\n\n\n    function replace() {\n      var args = arguments,\n          string = toString(args[0]);\n      return args.length < 3 ? string : string.replace(args[1], args[2]);\n    }\n    /**\n     * Converts `string` to\n     * [snake case](https://en.wikipedia.org/wiki/Snake_case).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the snake cased string.\n     * @example\n     *\n     * _.snakeCase('Foo Bar');\n     * // => 'foo_bar'\n     *\n     * _.snakeCase('fooBar');\n     * // => 'foo_bar'\n     *\n     * _.snakeCase('--FOO-BAR--');\n     * // => 'foo_bar'\n     */\n\n\n    var snakeCase = createCompounder(function (result, word, index) {\n      return result + (index ? '_' : '') + word.toLowerCase();\n    });\n    /**\n     * Splits `string` by `separator`.\n     *\n     * **Note:** This method is based on\n     * [`String#split`](https://mdn.io/String/split).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to split.\n     * @param {RegExp|string} separator The separator pattern to split by.\n     * @param {number} [limit] The length to truncate results to.\n     * @returns {Array} Returns the string segments.\n     * @example\n     *\n     * _.split('a-b-c', '-', 2);\n     * // => ['a', 'b']\n     */\n\n    function split(string, separator, limit) {\n      if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {\n        separator = limit = undefined;\n      }\n\n      limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;\n\n      if (!limit) {\n        return [];\n      }\n\n      string = toString(string);\n\n      if (string && (typeof separator == 'string' || separator != null && !isRegExp(separator))) {\n        separator = baseToString(separator);\n\n        if (!separator && hasUnicode(string)) {\n          return castSlice(stringToArray(string), 0, limit);\n        }\n      }\n\n      return string.split(separator, limit);\n    }\n    /**\n     * Converts `string` to\n     * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.1.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the start cased string.\n     * @example\n     *\n     * _.startCase('--foo-bar--');\n     * // => 'Foo Bar'\n     *\n     * _.startCase('fooBar');\n     * // => 'Foo Bar'\n     *\n     * _.startCase('__FOO_BAR__');\n     * // => 'FOO BAR'\n     */\n\n\n    var startCase = createCompounder(function (result, word, index) {\n      return result + (index ? ' ' : '') + upperFirst(word);\n    });\n    /**\n     * Checks if `string` starts with the given target string.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to inspect.\n     * @param {string} [target] The string to search for.\n     * @param {number} [position=0] The position to search from.\n     * @returns {boolean} Returns `true` if `string` starts with `target`,\n     *  else `false`.\n     * @example\n     *\n     * _.startsWith('abc', 'a');\n     * // => true\n     *\n     * _.startsWith('abc', 'b');\n     * // => false\n     *\n     * _.startsWith('abc', 'b', 1);\n     * // => true\n     */\n\n    function startsWith(string, target, position) {\n      string = toString(string);\n      position = position == null ? 0 : baseClamp(toInteger(position), 0, string.length);\n      target = baseToString(target);\n      return string.slice(position, position + target.length) == target;\n    }\n    /**\n     * Creates a compiled template function that can interpolate data properties\n     * in \"interpolate\" delimiters, HTML-escape interpolated data properties in\n     * \"escape\" delimiters, and execute JavaScript in \"evaluate\" delimiters. Data\n     * properties may be accessed as free variables in the template. If a setting\n     * object is given, it takes precedence over `_.templateSettings` values.\n     *\n     * **Note:** In the development build `_.template` utilizes\n     * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)\n     * for easier debugging.\n     *\n     * For more information on precompiling templates see\n     * [lodash's custom builds documentation](https://lodash.com/custom-builds).\n     *\n     * For more information on Chrome extension sandboxes see\n     * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category String\n     * @param {string} [string=''] The template string.\n     * @param {Object} [options={}] The options object.\n     * @param {RegExp} [options.escape=_.templateSettings.escape]\n     *  The HTML \"escape\" delimiter.\n     * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]\n     *  The \"evaluate\" delimiter.\n     * @param {Object} [options.imports=_.templateSettings.imports]\n     *  An object to import into the template as free variables.\n     * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]\n     *  The \"interpolate\" delimiter.\n     * @param {string} [options.sourceURL='lodash.templateSources[n]']\n     *  The sourceURL of the compiled template.\n     * @param {string} [options.variable='obj']\n     *  The data object variable name.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Function} Returns the compiled template function.\n     * @example\n     *\n     * // Use the \"interpolate\" delimiter to create a compiled template.\n     * var compiled = _.template('hello <%= user %>!');\n     * compiled({ 'user': 'fred' });\n     * // => 'hello fred!'\n     *\n     * // Use the HTML \"escape\" delimiter to escape data property values.\n     * var compiled = _.template('<b><%- value %></b>');\n     * compiled({ 'value': '<script>' });\n     * // => '<b>&lt;script&gt;</b>'\n     *\n     * // Use the \"evaluate\" delimiter to execute JavaScript and generate HTML.\n     * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');\n     * compiled({ 'users': ['fred', 'barney'] });\n     * // => '<li>fred</li><li>barney</li>'\n     *\n     * // Use the internal `print` function in \"evaluate\" delimiters.\n     * var compiled = _.template('<% print(\"hello \" + user); %>!');\n     * compiled({ 'user': 'barney' });\n     * // => 'hello barney!'\n     *\n     * // Use the ES template literal delimiter as an \"interpolate\" delimiter.\n     * // Disable support by replacing the \"interpolate\" delimiter.\n     * var compiled = _.template('hello ${ user }!');\n     * compiled({ 'user': 'pebbles' });\n     * // => 'hello pebbles!'\n     *\n     * // Use backslashes to treat delimiters as plain text.\n     * var compiled = _.template('<%= \"\\\\<%- value %\\\\>\" %>');\n     * compiled({ 'value': 'ignored' });\n     * // => '<%- value %>'\n     *\n     * // Use the `imports` option to import `jQuery` as `jq`.\n     * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';\n     * var compiled = _.template(text, { 'imports': { 'jq': jQuery } });\n     * compiled({ 'users': ['fred', 'barney'] });\n     * // => '<li>fred</li><li>barney</li>'\n     *\n     * // Use the `sourceURL` option to specify a custom sourceURL for the template.\n     * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });\n     * compiled(data);\n     * // => Find the source of \"greeting.jst\" under the Sources tab or Resources panel of the web inspector.\n     *\n     * // Use the `variable` option to ensure a with-statement isn't used in the compiled template.\n     * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });\n     * compiled.source;\n     * // => function(data) {\n     * //   var __t, __p = '';\n     * //   __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';\n     * //   return __p;\n     * // }\n     *\n     * // Use custom template delimiters.\n     * _.templateSettings.interpolate = /{{([\\s\\S]+?)}}/g;\n     * var compiled = _.template('hello {{ user }}!');\n     * compiled({ 'user': 'mustache' });\n     * // => 'hello mustache!'\n     *\n     * // Use the `source` property to inline compiled templates for meaningful\n     * // line numbers in error messages and stack traces.\n     * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\\\n     *   var JST = {\\\n     *     \"main\": ' + _.template(mainText).source + '\\\n     *   };\\\n     * ');\n     */\n\n\n    function template(string, options, guard) {\n      // Based on John Resig's `tmpl` implementation\n      // (http://ejohn.org/blog/javascript-micro-templating/)\n      // and Laura Doktorova's doT.js (https://github.com/olado/doT).\n      var settings = lodash.templateSettings;\n\n      if (guard && isIterateeCall(string, options, guard)) {\n        options = undefined;\n      }\n\n      string = toString(string);\n      options = assignInWith({}, options, settings, customDefaultsAssignIn);\n      var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn),\n          importsKeys = keys(imports),\n          importsValues = baseValues(imports, importsKeys);\n      var isEscaping,\n          isEvaluating,\n          index = 0,\n          interpolate = options.interpolate || reNoMatch,\n          source = \"__p += '\"; // Compile the regexp to match each delimiter.\n\n      var reDelimiters = RegExp((options.escape || reNoMatch).source + '|' + interpolate.source + '|' + (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' + (options.evaluate || reNoMatch).source + '|$', 'g'); // Use a sourceURL for easier debugging.\n      // The sourceURL gets injected into the source that's eval-ed, so be careful\n      // to normalize all kinds of whitespace, so e.g. newlines (and unicode versions of it) can't sneak in\n      // and escape the comment, thus injecting code that gets evaled.\n\n      var sourceURL = '//# sourceURL=' + (hasOwnProperty.call(options, 'sourceURL') ? (options.sourceURL + '').replace(/\\s/g, ' ') : 'lodash.templateSources[' + ++templateCounter + ']') + '\\n';\n      string.replace(reDelimiters, function (match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {\n        interpolateValue || (interpolateValue = esTemplateValue); // Escape characters that can't be included in string literals.\n\n        source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar); // Replace delimiters with snippets.\n\n        if (escapeValue) {\n          isEscaping = true;\n          source += \"' +\\n__e(\" + escapeValue + \") +\\n'\";\n        }\n\n        if (evaluateValue) {\n          isEvaluating = true;\n          source += \"';\\n\" + evaluateValue + \";\\n__p += '\";\n        }\n\n        if (interpolateValue) {\n          source += \"' +\\n((__t = (\" + interpolateValue + \")) == null ? '' : __t) +\\n'\";\n        }\n\n        index = offset + match.length; // The JS engine embedded in Adobe products needs `match` returned in\n        // order to produce the correct `offset` value.\n\n        return match;\n      });\n      source += \"';\\n\"; // If `variable` is not specified wrap a with-statement around the generated\n      // code to add the data object to the top of the scope chain.\n\n      var variable = hasOwnProperty.call(options, 'variable') && options.variable;\n\n      if (!variable) {\n        source = 'with (obj) {\\n' + source + '\\n}\\n';\n      } // Throw an error if a forbidden character was found in `variable`, to prevent\n      // potential command injection attacks.\n      else if (reForbiddenIdentifierChars.test(variable)) {\n        throw new Error(INVALID_TEMPL_VAR_ERROR_TEXT);\n      } // Cleanup code by stripping empty strings.\n\n\n      source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source).replace(reEmptyStringMiddle, '$1').replace(reEmptyStringTrailing, '$1;'); // Frame code as the function body.\n\n      source = 'function(' + (variable || 'obj') + ') {\\n' + (variable ? '' : 'obj || (obj = {});\\n') + \"var __t, __p = ''\" + (isEscaping ? ', __e = _.escape' : '') + (isEvaluating ? ', __j = Array.prototype.join;\\n' + \"function print() { __p += __j.call(arguments, '') }\\n\" : ';\\n') + source + 'return __p\\n}';\n      var result = attempt(function () {\n        return Function(importsKeys, sourceURL + 'return ' + source).apply(undefined, importsValues);\n      }); // Provide the compiled function's source by its `toString` method or\n      // the `source` property as a convenience for inlining compiled templates.\n\n      result.source = source;\n\n      if (isError(result)) {\n        throw result;\n      }\n\n      return result;\n    }\n    /**\n     * Converts `string`, as a whole, to lower case just like\n     * [String#toLowerCase](https://mdn.io/toLowerCase).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the lower cased string.\n     * @example\n     *\n     * _.toLower('--Foo-Bar--');\n     * // => '--foo-bar--'\n     *\n     * _.toLower('fooBar');\n     * // => 'foobar'\n     *\n     * _.toLower('__FOO_BAR__');\n     * // => '__foo_bar__'\n     */\n\n\n    function toLower(value) {\n      return toString(value).toLowerCase();\n    }\n    /**\n     * Converts `string`, as a whole, to upper case just like\n     * [String#toUpperCase](https://mdn.io/toUpperCase).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the upper cased string.\n     * @example\n     *\n     * _.toUpper('--foo-bar--');\n     * // => '--FOO-BAR--'\n     *\n     * _.toUpper('fooBar');\n     * // => 'FOOBAR'\n     *\n     * _.toUpper('__foo_bar__');\n     * // => '__FOO_BAR__'\n     */\n\n\n    function toUpper(value) {\n      return toString(value).toUpperCase();\n    }\n    /**\n     * Removes leading and trailing whitespace or specified characters from `string`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to trim.\n     * @param {string} [chars=whitespace] The characters to trim.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {string} Returns the trimmed string.\n     * @example\n     *\n     * _.trim('  abc  ');\n     * // => 'abc'\n     *\n     * _.trim('-_-abc-_-', '_-');\n     * // => 'abc'\n     *\n     * _.map(['  foo  ', '  bar  '], _.trim);\n     * // => ['foo', 'bar']\n     */\n\n\n    function trim(string, chars, guard) {\n      string = toString(string);\n\n      if (string && (guard || chars === undefined)) {\n        return baseTrim(string);\n      }\n\n      if (!string || !(chars = baseToString(chars))) {\n        return string;\n      }\n\n      var strSymbols = stringToArray(string),\n          chrSymbols = stringToArray(chars),\n          start = charsStartIndex(strSymbols, chrSymbols),\n          end = charsEndIndex(strSymbols, chrSymbols) + 1;\n      return castSlice(strSymbols, start, end).join('');\n    }\n    /**\n     * Removes trailing whitespace or specified characters from `string`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to trim.\n     * @param {string} [chars=whitespace] The characters to trim.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {string} Returns the trimmed string.\n     * @example\n     *\n     * _.trimEnd('  abc  ');\n     * // => '  abc'\n     *\n     * _.trimEnd('-_-abc-_-', '_-');\n     * // => '-_-abc'\n     */\n\n\n    function trimEnd(string, chars, guard) {\n      string = toString(string);\n\n      if (string && (guard || chars === undefined)) {\n        return string.slice(0, trimmedEndIndex(string) + 1);\n      }\n\n      if (!string || !(chars = baseToString(chars))) {\n        return string;\n      }\n\n      var strSymbols = stringToArray(string),\n          end = charsEndIndex(strSymbols, stringToArray(chars)) + 1;\n      return castSlice(strSymbols, 0, end).join('');\n    }\n    /**\n     * Removes leading whitespace or specified characters from `string`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to trim.\n     * @param {string} [chars=whitespace] The characters to trim.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {string} Returns the trimmed string.\n     * @example\n     *\n     * _.trimStart('  abc  ');\n     * // => 'abc  '\n     *\n     * _.trimStart('-_-abc-_-', '_-');\n     * // => 'abc-_-'\n     */\n\n\n    function trimStart(string, chars, guard) {\n      string = toString(string);\n\n      if (string && (guard || chars === undefined)) {\n        return string.replace(reTrimStart, '');\n      }\n\n      if (!string || !(chars = baseToString(chars))) {\n        return string;\n      }\n\n      var strSymbols = stringToArray(string),\n          start = charsStartIndex(strSymbols, stringToArray(chars));\n      return castSlice(strSymbols, start).join('');\n    }\n    /**\n     * Truncates `string` if it's longer than the given maximum string length.\n     * The last characters of the truncated string are replaced with the omission\n     * string which defaults to \"...\".\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to truncate.\n     * @param {Object} [options={}] The options object.\n     * @param {number} [options.length=30] The maximum string length.\n     * @param {string} [options.omission='...'] The string to indicate text is omitted.\n     * @param {RegExp|string} [options.separator] The separator pattern to truncate to.\n     * @returns {string} Returns the truncated string.\n     * @example\n     *\n     * _.truncate('hi-diddly-ho there, neighborino');\n     * // => 'hi-diddly-ho there, neighbo...'\n     *\n     * _.truncate('hi-diddly-ho there, neighborino', {\n     *   'length': 24,\n     *   'separator': ' '\n     * });\n     * // => 'hi-diddly-ho there,...'\n     *\n     * _.truncate('hi-diddly-ho there, neighborino', {\n     *   'length': 24,\n     *   'separator': /,? +/\n     * });\n     * // => 'hi-diddly-ho there...'\n     *\n     * _.truncate('hi-diddly-ho there, neighborino', {\n     *   'omission': ' [...]'\n     * });\n     * // => 'hi-diddly-ho there, neig [...]'\n     */\n\n\n    function truncate(string, options) {\n      var length = DEFAULT_TRUNC_LENGTH,\n          omission = DEFAULT_TRUNC_OMISSION;\n\n      if (isObject(options)) {\n        var separator = 'separator' in options ? options.separator : separator;\n        length = 'length' in options ? toInteger(options.length) : length;\n        omission = 'omission' in options ? baseToString(options.omission) : omission;\n      }\n\n      string = toString(string);\n      var strLength = string.length;\n\n      if (hasUnicode(string)) {\n        var strSymbols = stringToArray(string);\n        strLength = strSymbols.length;\n      }\n\n      if (length >= strLength) {\n        return string;\n      }\n\n      var end = length - stringSize(omission);\n\n      if (end < 1) {\n        return omission;\n      }\n\n      var result = strSymbols ? castSlice(strSymbols, 0, end).join('') : string.slice(0, end);\n\n      if (separator === undefined) {\n        return result + omission;\n      }\n\n      if (strSymbols) {\n        end += result.length - end;\n      }\n\n      if (isRegExp(separator)) {\n        if (string.slice(end).search(separator)) {\n          var match,\n              substring = result;\n\n          if (!separator.global) {\n            separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g');\n          }\n\n          separator.lastIndex = 0;\n\n          while (match = separator.exec(substring)) {\n            var newEnd = match.index;\n          }\n\n          result = result.slice(0, newEnd === undefined ? end : newEnd);\n        }\n      } else if (string.indexOf(baseToString(separator), end) != end) {\n        var index = result.lastIndexOf(separator);\n\n        if (index > -1) {\n          result = result.slice(0, index);\n        }\n      }\n\n      return result + omission;\n    }\n    /**\n     * The inverse of `_.escape`; this method converts the HTML entities\n     * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to\n     * their corresponding characters.\n     *\n     * **Note:** No other HTML entities are unescaped. To unescape additional\n     * HTML entities use a third-party library like [_he_](https://mths.be/he).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.6.0\n     * @category String\n     * @param {string} [string=''] The string to unescape.\n     * @returns {string} Returns the unescaped string.\n     * @example\n     *\n     * _.unescape('fred, barney, &amp; pebbles');\n     * // => 'fred, barney, & pebbles'\n     */\n\n\n    function unescape(string) {\n      string = toString(string);\n      return string && reHasEscapedHtml.test(string) ? string.replace(reEscapedHtml, unescapeHtmlChar) : string;\n    }\n    /**\n     * Converts `string`, as space separated words, to upper case.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the upper cased string.\n     * @example\n     *\n     * _.upperCase('--foo-bar');\n     * // => 'FOO BAR'\n     *\n     * _.upperCase('fooBar');\n     * // => 'FOO BAR'\n     *\n     * _.upperCase('__foo_bar__');\n     * // => 'FOO BAR'\n     */\n\n\n    var upperCase = createCompounder(function (result, word, index) {\n      return result + (index ? ' ' : '') + word.toUpperCase();\n    });\n    /**\n     * Converts the first character of `string` to upper case.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the converted string.\n     * @example\n     *\n     * _.upperFirst('fred');\n     * // => 'Fred'\n     *\n     * _.upperFirst('FRED');\n     * // => 'FRED'\n     */\n\n    var upperFirst = createCaseFirst('toUpperCase');\n    /**\n     * Splits `string` into an array of its words.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to inspect.\n     * @param {RegExp|string} [pattern] The pattern to match words.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the words of `string`.\n     * @example\n     *\n     * _.words('fred, barney, & pebbles');\n     * // => ['fred', 'barney', 'pebbles']\n     *\n     * _.words('fred, barney, & pebbles', /[^, ]+/g);\n     * // => ['fred', 'barney', '&', 'pebbles']\n     */\n\n    function words(string, pattern, guard) {\n      string = toString(string);\n      pattern = guard ? undefined : pattern;\n\n      if (pattern === undefined) {\n        return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string);\n      }\n\n      return string.match(pattern) || [];\n    }\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Attempts to invoke `func`, returning either the result or the caught error\n     * object. Any additional arguments are provided to `func` when it's invoked.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Util\n     * @param {Function} func The function to attempt.\n     * @param {...*} [args] The arguments to invoke `func` with.\n     * @returns {*} Returns the `func` result or error object.\n     * @example\n     *\n     * // Avoid throwing errors for invalid selectors.\n     * var elements = _.attempt(function(selector) {\n     *   return document.querySelectorAll(selector);\n     * }, '>_>');\n     *\n     * if (_.isError(elements)) {\n     *   elements = [];\n     * }\n     */\n\n\n    var attempt = baseRest(function (func, args) {\n      try {\n        return apply(func, undefined, args);\n      } catch (e) {\n        return isError(e) ? e : new Error(e);\n      }\n    });\n    /**\n     * Binds methods of an object to the object itself, overwriting the existing\n     * method.\n     *\n     * **Note:** This method doesn't set the \"length\" property of bound functions.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {Object} object The object to bind and assign the bound methods to.\n     * @param {...(string|string[])} methodNames The object method names to bind.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var view = {\n     *   'label': 'docs',\n     *   'click': function() {\n     *     console.log('clicked ' + this.label);\n     *   }\n     * };\n     *\n     * _.bindAll(view, ['click']);\n     * jQuery(element).on('click', view.click);\n     * // => Logs 'clicked docs' when clicked.\n     */\n\n    var bindAll = flatRest(function (object, methodNames) {\n      arrayEach(methodNames, function (key) {\n        key = toKey(key);\n        baseAssignValue(object, key, bind(object[key], object));\n      });\n      return object;\n    });\n    /**\n     * Creates a function that iterates over `pairs` and invokes the corresponding\n     * function of the first predicate to return truthy. The predicate-function\n     * pairs are invoked with the `this` binding and arguments of the created\n     * function.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {Array} pairs The predicate-function pairs.\n     * @returns {Function} Returns the new composite function.\n     * @example\n     *\n     * var func = _.cond([\n     *   [_.matches({ 'a': 1 }),           _.constant('matches A')],\n     *   [_.conforms({ 'b': _.isNumber }), _.constant('matches B')],\n     *   [_.stubTrue,                      _.constant('no match')]\n     * ]);\n     *\n     * func({ 'a': 1, 'b': 2 });\n     * // => 'matches A'\n     *\n     * func({ 'a': 0, 'b': 1 });\n     * // => 'matches B'\n     *\n     * func({ 'a': '1', 'b': '2' });\n     * // => 'no match'\n     */\n\n    function cond(pairs) {\n      var length = pairs == null ? 0 : pairs.length,\n          toIteratee = getIteratee();\n      pairs = !length ? [] : arrayMap(pairs, function (pair) {\n        if (typeof pair[1] != 'function') {\n          throw new TypeError(FUNC_ERROR_TEXT);\n        }\n\n        return [toIteratee(pair[0]), pair[1]];\n      });\n      return baseRest(function (args) {\n        var index = -1;\n\n        while (++index < length) {\n          var pair = pairs[index];\n\n          if (apply(pair[0], this, args)) {\n            return apply(pair[1], this, args);\n          }\n        }\n      });\n    }\n    /**\n     * Creates a function that invokes the predicate properties of `source` with\n     * the corresponding property values of a given object, returning `true` if\n     * all predicates return truthy, else `false`.\n     *\n     * **Note:** The created function is equivalent to `_.conformsTo` with\n     * `source` partially applied.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {Object} source The object of property predicates to conform to.\n     * @returns {Function} Returns the new spec function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': 2, 'b': 1 },\n     *   { 'a': 1, 'b': 2 }\n     * ];\n     *\n     * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } }));\n     * // => [{ 'a': 1, 'b': 2 }]\n     */\n\n\n    function conforms(source) {\n      return baseConforms(baseClone(source, CLONE_DEEP_FLAG));\n    }\n    /**\n     * Creates a function that returns `value`.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Util\n     * @param {*} value The value to return from the new function.\n     * @returns {Function} Returns the new constant function.\n     * @example\n     *\n     * var objects = _.times(2, _.constant({ 'a': 1 }));\n     *\n     * console.log(objects);\n     * // => [{ 'a': 1 }, { 'a': 1 }]\n     *\n     * console.log(objects[0] === objects[1]);\n     * // => true\n     */\n\n\n    function constant(value) {\n      return function () {\n        return value;\n      };\n    }\n    /**\n     * Checks `value` to determine whether a default value should be returned in\n     * its place. The `defaultValue` is returned if `value` is `NaN`, `null`,\n     * or `undefined`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.14.0\n     * @category Util\n     * @param {*} value The value to check.\n     * @param {*} defaultValue The default value.\n     * @returns {*} Returns the resolved value.\n     * @example\n     *\n     * _.defaultTo(1, 10);\n     * // => 1\n     *\n     * _.defaultTo(undefined, 10);\n     * // => 10\n     */\n\n\n    function defaultTo(value, defaultValue) {\n      return value == null || value !== value ? defaultValue : value;\n    }\n    /**\n     * Creates a function that returns the result of invoking the given functions\n     * with the `this` binding of the created function, where each successive\n     * invocation is supplied the return value of the previous.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Util\n     * @param {...(Function|Function[])} [funcs] The functions to invoke.\n     * @returns {Function} Returns the new composite function.\n     * @see _.flowRight\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var addSquare = _.flow([_.add, square]);\n     * addSquare(1, 2);\n     * // => 9\n     */\n\n\n    var flow = createFlow();\n    /**\n     * This method is like `_.flow` except that it creates a function that\n     * invokes the given functions from right to left.\n     *\n     * @static\n     * @since 3.0.0\n     * @memberOf _\n     * @category Util\n     * @param {...(Function|Function[])} [funcs] The functions to invoke.\n     * @returns {Function} Returns the new composite function.\n     * @see _.flow\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var addSquare = _.flowRight([square, _.add]);\n     * addSquare(1, 2);\n     * // => 9\n     */\n\n    var flowRight = createFlow(true);\n    /**\n     * This method returns the first argument it receives.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {*} value Any value.\n     * @returns {*} Returns `value`.\n     * @example\n     *\n     * var object = { 'a': 1 };\n     *\n     * console.log(_.identity(object) === object);\n     * // => true\n     */\n\n    function identity(value) {\n      return value;\n    }\n    /**\n     * Creates a function that invokes `func` with the arguments of the created\n     * function. If `func` is a property name, the created function returns the\n     * property value for a given element. If `func` is an array or object, the\n     * created function returns `true` for elements that contain the equivalent\n     * source properties, otherwise it returns `false`.\n     *\n     * @static\n     * @since 4.0.0\n     * @memberOf _\n     * @category Util\n     * @param {*} [func=_.identity] The value to convert to a callback.\n     * @returns {Function} Returns the callback.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36, 'active': true },\n     *   { 'user': 'fred',   'age': 40, 'active': false }\n     * ];\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true }));\n     * // => [{ 'user': 'barney', 'age': 36, 'active': true }]\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.filter(users, _.iteratee(['user', 'fred']));\n     * // => [{ 'user': 'fred', 'age': 40 }]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.map(users, _.iteratee('user'));\n     * // => ['barney', 'fred']\n     *\n     * // Create custom iteratee shorthands.\n     * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) {\n     *   return !_.isRegExp(func) ? iteratee(func) : function(string) {\n     *     return func.test(string);\n     *   };\n     * });\n     *\n     * _.filter(['abc', 'def'], /ef/);\n     * // => ['def']\n     */\n\n\n    function iteratee(func) {\n      return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG));\n    }\n    /**\n     * Creates a function that performs a partial deep comparison between a given\n     * object and `source`, returning `true` if the given object has equivalent\n     * property values, else `false`.\n     *\n     * **Note:** The created function is equivalent to `_.isMatch` with `source`\n     * partially applied.\n     *\n     * Partial comparisons will match empty array and empty object `source`\n     * values against any array or object value, respectively. See `_.isEqual`\n     * for a list of supported value comparisons.\n     *\n     * **Note:** Multiple values can be checked by combining several matchers\n     * using `_.overSome`\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Util\n     * @param {Object} source The object of property values to match.\n     * @returns {Function} Returns the new spec function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': 1, 'b': 2, 'c': 3 },\n     *   { 'a': 4, 'b': 5, 'c': 6 }\n     * ];\n     *\n     * _.filter(objects, _.matches({ 'a': 4, 'c': 6 }));\n     * // => [{ 'a': 4, 'b': 5, 'c': 6 }]\n     *\n     * // Checking for several possible values\n     * _.filter(objects, _.overSome([_.matches({ 'a': 1 }), _.matches({ 'a': 4 })]));\n     * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]\n     */\n\n\n    function matches(source) {\n      return baseMatches(baseClone(source, CLONE_DEEP_FLAG));\n    }\n    /**\n     * Creates a function that performs a partial deep comparison between the\n     * value at `path` of a given object to `srcValue`, returning `true` if the\n     * object value is equivalent, else `false`.\n     *\n     * **Note:** Partial comparisons will match empty array and empty object\n     * `srcValue` values against any array or object value, respectively. See\n     * `_.isEqual` for a list of supported value comparisons.\n     *\n     * **Note:** Multiple values can be checked by combining several matchers\n     * using `_.overSome`\n     *\n     * @static\n     * @memberOf _\n     * @since 3.2.0\n     * @category Util\n     * @param {Array|string} path The path of the property to get.\n     * @param {*} srcValue The value to match.\n     * @returns {Function} Returns the new spec function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': 1, 'b': 2, 'c': 3 },\n     *   { 'a': 4, 'b': 5, 'c': 6 }\n     * ];\n     *\n     * _.find(objects, _.matchesProperty('a', 4));\n     * // => { 'a': 4, 'b': 5, 'c': 6 }\n     *\n     * // Checking for several possible values\n     * _.filter(objects, _.overSome([_.matchesProperty('a', 1), _.matchesProperty('a', 4)]));\n     * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]\n     */\n\n\n    function matchesProperty(path, srcValue) {\n      return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG));\n    }\n    /**\n     * Creates a function that invokes the method at `path` of a given object.\n     * Any additional arguments are provided to the invoked method.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.7.0\n     * @category Util\n     * @param {Array|string} path The path of the method to invoke.\n     * @param {...*} [args] The arguments to invoke the method with.\n     * @returns {Function} Returns the new invoker function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': { 'b': _.constant(2) } },\n     *   { 'a': { 'b': _.constant(1) } }\n     * ];\n     *\n     * _.map(objects, _.method('a.b'));\n     * // => [2, 1]\n     *\n     * _.map(objects, _.method(['a', 'b']));\n     * // => [2, 1]\n     */\n\n\n    var method = baseRest(function (path, args) {\n      return function (object) {\n        return baseInvoke(object, path, args);\n      };\n    });\n    /**\n     * The opposite of `_.method`; this method creates a function that invokes\n     * the method at a given path of `object`. Any additional arguments are\n     * provided to the invoked method.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.7.0\n     * @category Util\n     * @param {Object} object The object to query.\n     * @param {...*} [args] The arguments to invoke the method with.\n     * @returns {Function} Returns the new invoker function.\n     * @example\n     *\n     * var array = _.times(3, _.constant),\n     *     object = { 'a': array, 'b': array, 'c': array };\n     *\n     * _.map(['a[2]', 'c[0]'], _.methodOf(object));\n     * // => [2, 0]\n     *\n     * _.map([['a', '2'], ['c', '0']], _.methodOf(object));\n     * // => [2, 0]\n     */\n\n    var methodOf = baseRest(function (object, args) {\n      return function (path) {\n        return baseInvoke(object, path, args);\n      };\n    });\n    /**\n     * Adds all own enumerable string keyed function properties of a source\n     * object to the destination object. If `object` is a function, then methods\n     * are added to its prototype as well.\n     *\n     * **Note:** Use `_.runInContext` to create a pristine `lodash` function to\n     * avoid conflicts caused by modifying the original.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {Function|Object} [object=lodash] The destination object.\n     * @param {Object} source The object of functions to add.\n     * @param {Object} [options={}] The options object.\n     * @param {boolean} [options.chain=true] Specify whether mixins are chainable.\n     * @returns {Function|Object} Returns `object`.\n     * @example\n     *\n     * function vowels(string) {\n     *   return _.filter(string, function(v) {\n     *     return /[aeiou]/i.test(v);\n     *   });\n     * }\n     *\n     * _.mixin({ 'vowels': vowels });\n     * _.vowels('fred');\n     * // => ['e']\n     *\n     * _('fred').vowels().value();\n     * // => ['e']\n     *\n     * _.mixin({ 'vowels': vowels }, { 'chain': false });\n     * _('fred').vowels();\n     * // => ['e']\n     */\n\n    function mixin(object, source, options) {\n      var props = keys(source),\n          methodNames = baseFunctions(source, props);\n\n      if (options == null && !(isObject(source) && (methodNames.length || !props.length))) {\n        options = source;\n        source = object;\n        object = this;\n        methodNames = baseFunctions(source, keys(source));\n      }\n\n      var chain = !(isObject(options) && 'chain' in options) || !!options.chain,\n          isFunc = isFunction(object);\n      arrayEach(methodNames, function (methodName) {\n        var func = source[methodName];\n        object[methodName] = func;\n\n        if (isFunc) {\n          object.prototype[methodName] = function () {\n            var chainAll = this.__chain__;\n\n            if (chain || chainAll) {\n              var result = object(this.__wrapped__),\n                  actions = result.__actions__ = copyArray(this.__actions__);\n              actions.push({\n                'func': func,\n                'args': arguments,\n                'thisArg': object\n              });\n              result.__chain__ = chainAll;\n              return result;\n            }\n\n            return func.apply(object, arrayPush([this.value()], arguments));\n          };\n        }\n      });\n      return object;\n    }\n    /**\n     * Reverts the `_` variable to its previous value and returns a reference to\n     * the `lodash` function.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @returns {Function} Returns the `lodash` function.\n     * @example\n     *\n     * var lodash = _.noConflict();\n     */\n\n\n    function noConflict() {\n      if (root._ === this) {\n        root._ = oldDash;\n      }\n\n      return this;\n    }\n    /**\n     * This method returns `undefined`.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.3.0\n     * @category Util\n     * @example\n     *\n     * _.times(2, _.noop);\n     * // => [undefined, undefined]\n     */\n\n\n    function noop() {// No operation performed.\n    }\n    /**\n     * Creates a function that gets the argument at index `n`. If `n` is negative,\n     * the nth argument from the end is returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {number} [n=0] The index of the argument to return.\n     * @returns {Function} Returns the new pass-thru function.\n     * @example\n     *\n     * var func = _.nthArg(1);\n     * func('a', 'b', 'c', 'd');\n     * // => 'b'\n     *\n     * var func = _.nthArg(-2);\n     * func('a', 'b', 'c', 'd');\n     * // => 'c'\n     */\n\n\n    function nthArg(n) {\n      n = toInteger(n);\n      return baseRest(function (args) {\n        return baseNth(args, n);\n      });\n    }\n    /**\n     * Creates a function that invokes `iteratees` with the arguments it receives\n     * and returns their results.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {...(Function|Function[])} [iteratees=[_.identity]]\n     *  The iteratees to invoke.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var func = _.over([Math.max, Math.min]);\n     *\n     * func(1, 2, 3, 4);\n     * // => [4, 1]\n     */\n\n\n    var over = createOver(arrayMap);\n    /**\n     * Creates a function that checks if **all** of the `predicates` return\n     * truthy when invoked with the arguments it receives.\n     *\n     * Following shorthands are possible for providing predicates.\n     * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.\n     * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {...(Function|Function[])} [predicates=[_.identity]]\n     *  The predicates to check.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var func = _.overEvery([Boolean, isFinite]);\n     *\n     * func('1');\n     * // => true\n     *\n     * func(null);\n     * // => false\n     *\n     * func(NaN);\n     * // => false\n     */\n\n    var overEvery = createOver(arrayEvery);\n    /**\n     * Creates a function that checks if **any** of the `predicates` return\n     * truthy when invoked with the arguments it receives.\n     *\n     * Following shorthands are possible for providing predicates.\n     * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.\n     * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {...(Function|Function[])} [predicates=[_.identity]]\n     *  The predicates to check.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var func = _.overSome([Boolean, isFinite]);\n     *\n     * func('1');\n     * // => true\n     *\n     * func(null);\n     * // => true\n     *\n     * func(NaN);\n     * // => false\n     *\n     * var matchesFunc = _.overSome([{ 'a': 1 }, { 'a': 2 }])\n     * var matchesPropertyFunc = _.overSome([['a', 1], ['a', 2]])\n     */\n\n    var overSome = createOver(arraySome);\n    /**\n     * Creates a function that returns the value at `path` of a given object.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Util\n     * @param {Array|string} path The path of the property to get.\n     * @returns {Function} Returns the new accessor function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': { 'b': 2 } },\n     *   { 'a': { 'b': 1 } }\n     * ];\n     *\n     * _.map(objects, _.property('a.b'));\n     * // => [2, 1]\n     *\n     * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');\n     * // => [1, 2]\n     */\n\n    function property(path) {\n      return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);\n    }\n    /**\n     * The opposite of `_.property`; this method creates a function that returns\n     * the value at a given path of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Util\n     * @param {Object} object The object to query.\n     * @returns {Function} Returns the new accessor function.\n     * @example\n     *\n     * var array = [0, 1, 2],\n     *     object = { 'a': array, 'b': array, 'c': array };\n     *\n     * _.map(['a[2]', 'c[0]'], _.propertyOf(object));\n     * // => [2, 0]\n     *\n     * _.map([['a', '2'], ['c', '0']], _.propertyOf(object));\n     * // => [2, 0]\n     */\n\n\n    function propertyOf(object) {\n      return function (path) {\n        return object == null ? undefined : baseGet(object, path);\n      };\n    }\n    /**\n     * Creates an array of numbers (positive and/or negative) progressing from\n     * `start` up to, but not including, `end`. A step of `-1` is used if a negative\n     * `start` is specified without an `end` or `step`. If `end` is not specified,\n     * it's set to `start` with `start` then set to `0`.\n     *\n     * **Note:** JavaScript follows the IEEE-754 standard for resolving\n     * floating-point values which can produce unexpected results.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {number} [start=0] The start of the range.\n     * @param {number} end The end of the range.\n     * @param {number} [step=1] The value to increment or decrement by.\n     * @returns {Array} Returns the range of numbers.\n     * @see _.inRange, _.rangeRight\n     * @example\n     *\n     * _.range(4);\n     * // => [0, 1, 2, 3]\n     *\n     * _.range(-4);\n     * // => [0, -1, -2, -3]\n     *\n     * _.range(1, 5);\n     * // => [1, 2, 3, 4]\n     *\n     * _.range(0, 20, 5);\n     * // => [0, 5, 10, 15]\n     *\n     * _.range(0, -4, -1);\n     * // => [0, -1, -2, -3]\n     *\n     * _.range(1, 4, 0);\n     * // => [1, 1, 1]\n     *\n     * _.range(0);\n     * // => []\n     */\n\n\n    var range = createRange();\n    /**\n     * This method is like `_.range` except that it populates values in\n     * descending order.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {number} [start=0] The start of the range.\n     * @param {number} end The end of the range.\n     * @param {number} [step=1] The value to increment or decrement by.\n     * @returns {Array} Returns the range of numbers.\n     * @see _.inRange, _.range\n     * @example\n     *\n     * _.rangeRight(4);\n     * // => [3, 2, 1, 0]\n     *\n     * _.rangeRight(-4);\n     * // => [-3, -2, -1, 0]\n     *\n     * _.rangeRight(1, 5);\n     * // => [4, 3, 2, 1]\n     *\n     * _.rangeRight(0, 20, 5);\n     * // => [15, 10, 5, 0]\n     *\n     * _.rangeRight(0, -4, -1);\n     * // => [-3, -2, -1, 0]\n     *\n     * _.rangeRight(1, 4, 0);\n     * // => [1, 1, 1]\n     *\n     * _.rangeRight(0);\n     * // => []\n     */\n\n    var rangeRight = createRange(true);\n    /**\n     * This method returns a new empty array.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {Array} Returns the new empty array.\n     * @example\n     *\n     * var arrays = _.times(2, _.stubArray);\n     *\n     * console.log(arrays);\n     * // => [[], []]\n     *\n     * console.log(arrays[0] === arrays[1]);\n     * // => false\n     */\n\n    function stubArray() {\n      return [];\n    }\n    /**\n     * This method returns `false`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {boolean} Returns `false`.\n     * @example\n     *\n     * _.times(2, _.stubFalse);\n     * // => [false, false]\n     */\n\n\n    function stubFalse() {\n      return false;\n    }\n    /**\n     * This method returns a new empty object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {Object} Returns the new empty object.\n     * @example\n     *\n     * var objects = _.times(2, _.stubObject);\n     *\n     * console.log(objects);\n     * // => [{}, {}]\n     *\n     * console.log(objects[0] === objects[1]);\n     * // => false\n     */\n\n\n    function stubObject() {\n      return {};\n    }\n    /**\n     * This method returns an empty string.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {string} Returns the empty string.\n     * @example\n     *\n     * _.times(2, _.stubString);\n     * // => ['', '']\n     */\n\n\n    function stubString() {\n      return '';\n    }\n    /**\n     * This method returns `true`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {boolean} Returns `true`.\n     * @example\n     *\n     * _.times(2, _.stubTrue);\n     * // => [true, true]\n     */\n\n\n    function stubTrue() {\n      return true;\n    }\n    /**\n     * Invokes the iteratee `n` times, returning an array of the results of\n     * each invocation. The iteratee is invoked with one argument; (index).\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {number} n The number of times to invoke `iteratee`.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the array of results.\n     * @example\n     *\n     * _.times(3, String);\n     * // => ['0', '1', '2']\n     *\n     *  _.times(4, _.constant(0));\n     * // => [0, 0, 0, 0]\n     */\n\n\n    function times(n, iteratee) {\n      n = toInteger(n);\n\n      if (n < 1 || n > MAX_SAFE_INTEGER) {\n        return [];\n      }\n\n      var index = MAX_ARRAY_LENGTH,\n          length = nativeMin(n, MAX_ARRAY_LENGTH);\n      iteratee = getIteratee(iteratee);\n      n -= MAX_ARRAY_LENGTH;\n      var result = baseTimes(length, iteratee);\n\n      while (++index < n) {\n        iteratee(index);\n      }\n\n      return result;\n    }\n    /**\n     * Converts `value` to a property path array.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {*} value The value to convert.\n     * @returns {Array} Returns the new property path array.\n     * @example\n     *\n     * _.toPath('a.b.c');\n     * // => ['a', 'b', 'c']\n     *\n     * _.toPath('a[0].b.c');\n     * // => ['a', '0', 'b', 'c']\n     */\n\n\n    function toPath(value) {\n      if (isArray(value)) {\n        return arrayMap(value, toKey);\n      }\n\n      return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value)));\n    }\n    /**\n     * Generates a unique ID. If `prefix` is given, the ID is appended to it.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {string} [prefix=''] The value to prefix the ID with.\n     * @returns {string} Returns the unique ID.\n     * @example\n     *\n     * _.uniqueId('contact_');\n     * // => 'contact_104'\n     *\n     * _.uniqueId();\n     * // => '105'\n     */\n\n\n    function uniqueId(prefix) {\n      var id = ++idCounter;\n      return toString(prefix) + id;\n    }\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Adds two numbers.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.4.0\n     * @category Math\n     * @param {number} augend The first number in an addition.\n     * @param {number} addend The second number in an addition.\n     * @returns {number} Returns the total.\n     * @example\n     *\n     * _.add(6, 4);\n     * // => 10\n     */\n\n\n    var add = createMathOperation(function (augend, addend) {\n      return augend + addend;\n    }, 0);\n    /**\n     * Computes `number` rounded up to `precision`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.10.0\n     * @category Math\n     * @param {number} number The number to round up.\n     * @param {number} [precision=0] The precision to round up to.\n     * @returns {number} Returns the rounded up number.\n     * @example\n     *\n     * _.ceil(4.006);\n     * // => 5\n     *\n     * _.ceil(6.004, 2);\n     * // => 6.01\n     *\n     * _.ceil(6040, -2);\n     * // => 6100\n     */\n\n    var ceil = createRound('ceil');\n    /**\n     * Divide two numbers.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Math\n     * @param {number} dividend The first number in a division.\n     * @param {number} divisor The second number in a division.\n     * @returns {number} Returns the quotient.\n     * @example\n     *\n     * _.divide(6, 4);\n     * // => 1.5\n     */\n\n    var divide = createMathOperation(function (dividend, divisor) {\n      return dividend / divisor;\n    }, 1);\n    /**\n     * Computes `number` rounded down to `precision`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.10.0\n     * @category Math\n     * @param {number} number The number to round down.\n     * @param {number} [precision=0] The precision to round down to.\n     * @returns {number} Returns the rounded down number.\n     * @example\n     *\n     * _.floor(4.006);\n     * // => 4\n     *\n     * _.floor(0.046, 2);\n     * // => 0.04\n     *\n     * _.floor(4060, -2);\n     * // => 4000\n     */\n\n    var floor = createRound('floor');\n    /**\n     * Computes the maximum value of `array`. If `array` is empty or falsey,\n     * `undefined` is returned.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @returns {*} Returns the maximum value.\n     * @example\n     *\n     * _.max([4, 2, 8, 6]);\n     * // => 8\n     *\n     * _.max([]);\n     * // => undefined\n     */\n\n    function max(array) {\n      return array && array.length ? baseExtremum(array, identity, baseGt) : undefined;\n    }\n    /**\n     * This method is like `_.max` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the criterion by which\n     * the value is ranked. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {*} Returns the maximum value.\n     * @example\n     *\n     * var objects = [{ 'n': 1 }, { 'n': 2 }];\n     *\n     * _.maxBy(objects, function(o) { return o.n; });\n     * // => { 'n': 2 }\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.maxBy(objects, 'n');\n     * // => { 'n': 2 }\n     */\n\n\n    function maxBy(array, iteratee) {\n      return array && array.length ? baseExtremum(array, getIteratee(iteratee, 2), baseGt) : undefined;\n    }\n    /**\n     * Computes the mean of the values in `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @returns {number} Returns the mean.\n     * @example\n     *\n     * _.mean([4, 2, 8, 6]);\n     * // => 5\n     */\n\n\n    function mean(array) {\n      return baseMean(array, identity);\n    }\n    /**\n     * This method is like `_.mean` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the value to be averaged.\n     * The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {number} Returns the mean.\n     * @example\n     *\n     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];\n     *\n     * _.meanBy(objects, function(o) { return o.n; });\n     * // => 5\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.meanBy(objects, 'n');\n     * // => 5\n     */\n\n\n    function meanBy(array, iteratee) {\n      return baseMean(array, getIteratee(iteratee, 2));\n    }\n    /**\n     * Computes the minimum value of `array`. If `array` is empty or falsey,\n     * `undefined` is returned.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @returns {*} Returns the minimum value.\n     * @example\n     *\n     * _.min([4, 2, 8, 6]);\n     * // => 2\n     *\n     * _.min([]);\n     * // => undefined\n     */\n\n\n    function min(array) {\n      return array && array.length ? baseExtremum(array, identity, baseLt) : undefined;\n    }\n    /**\n     * This method is like `_.min` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the criterion by which\n     * the value is ranked. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {*} Returns the minimum value.\n     * @example\n     *\n     * var objects = [{ 'n': 1 }, { 'n': 2 }];\n     *\n     * _.minBy(objects, function(o) { return o.n; });\n     * // => { 'n': 1 }\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.minBy(objects, 'n');\n     * // => { 'n': 1 }\n     */\n\n\n    function minBy(array, iteratee) {\n      return array && array.length ? baseExtremum(array, getIteratee(iteratee, 2), baseLt) : undefined;\n    }\n    /**\n     * Multiply two numbers.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Math\n     * @param {number} multiplier The first number in a multiplication.\n     * @param {number} multiplicand The second number in a multiplication.\n     * @returns {number} Returns the product.\n     * @example\n     *\n     * _.multiply(6, 4);\n     * // => 24\n     */\n\n\n    var multiply = createMathOperation(function (multiplier, multiplicand) {\n      return multiplier * multiplicand;\n    }, 1);\n    /**\n     * Computes `number` rounded to `precision`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.10.0\n     * @category Math\n     * @param {number} number The number to round.\n     * @param {number} [precision=0] The precision to round to.\n     * @returns {number} Returns the rounded number.\n     * @example\n     *\n     * _.round(4.006);\n     * // => 4\n     *\n     * _.round(4.006, 2);\n     * // => 4.01\n     *\n     * _.round(4060, -2);\n     * // => 4100\n     */\n\n    var round = createRound('round');\n    /**\n     * Subtract two numbers.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {number} minuend The first number in a subtraction.\n     * @param {number} subtrahend The second number in a subtraction.\n     * @returns {number} Returns the difference.\n     * @example\n     *\n     * _.subtract(6, 4);\n     * // => 2\n     */\n\n    var subtract = createMathOperation(function (minuend, subtrahend) {\n      return minuend - subtrahend;\n    }, 0);\n    /**\n     * Computes the sum of the values in `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.4.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @returns {number} Returns the sum.\n     * @example\n     *\n     * _.sum([4, 2, 8, 6]);\n     * // => 20\n     */\n\n    function sum(array) {\n      return array && array.length ? baseSum(array, identity) : 0;\n    }\n    /**\n     * This method is like `_.sum` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the value to be summed.\n     * The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {number} Returns the sum.\n     * @example\n     *\n     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];\n     *\n     * _.sumBy(objects, function(o) { return o.n; });\n     * // => 20\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.sumBy(objects, 'n');\n     * // => 20\n     */\n\n\n    function sumBy(array, iteratee) {\n      return array && array.length ? baseSum(array, getIteratee(iteratee, 2)) : 0;\n    }\n    /*------------------------------------------------------------------------*/\n    // Add methods that return wrapped values in chain sequences.\n\n\n    lodash.after = after;\n    lodash.ary = ary;\n    lodash.assign = assign;\n    lodash.assignIn = assignIn;\n    lodash.assignInWith = assignInWith;\n    lodash.assignWith = assignWith;\n    lodash.at = at;\n    lodash.before = before;\n    lodash.bind = bind;\n    lodash.bindAll = bindAll;\n    lodash.bindKey = bindKey;\n    lodash.castArray = castArray;\n    lodash.chain = chain;\n    lodash.chunk = chunk;\n    lodash.compact = compact;\n    lodash.concat = concat;\n    lodash.cond = cond;\n    lodash.conforms = conforms;\n    lodash.constant = constant;\n    lodash.countBy = countBy;\n    lodash.create = create;\n    lodash.curry = curry;\n    lodash.curryRight = curryRight;\n    lodash.debounce = debounce;\n    lodash.defaults = defaults;\n    lodash.defaultsDeep = defaultsDeep;\n    lodash.defer = defer;\n    lodash.delay = delay;\n    lodash.difference = difference;\n    lodash.differenceBy = differenceBy;\n    lodash.differenceWith = differenceWith;\n    lodash.drop = drop;\n    lodash.dropRight = dropRight;\n    lodash.dropRightWhile = dropRightWhile;\n    lodash.dropWhile = dropWhile;\n  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lodash.matchesProperty = matchesProperty;\n    lodash.memoize = memoize;\n    lodash.merge = merge;\n    lodash.mergeWith = mergeWith;\n    lodash.method = method;\n    lodash.methodOf = methodOf;\n    lodash.mixin = mixin;\n    lodash.negate = negate;\n    lodash.nthArg = nthArg;\n    lodash.omit = omit;\n    lodash.omitBy = omitBy;\n    lodash.once = once;\n    lodash.orderBy = orderBy;\n    lodash.over = over;\n    lodash.overArgs = overArgs;\n    lodash.overEvery = overEvery;\n    lodash.overSome = overSome;\n    lodash.partial = partial;\n    lodash.partialRight = partialRight;\n    lodash.partition = partition;\n    lodash.pick = pick;\n    lodash.pickBy = pickBy;\n    lodash.property = property;\n    lodash.propertyOf = propertyOf;\n    lodash.pull = pull;\n    lodash.pullAll = pullAll;\n    lodash.pullAllBy = pullAllBy;\n    lodash.pullAllWith = pullAllWith;\n    lodash.pullAt = pullAt;\n    lodash.range = range;\n    lodash.rangeRight = rangeRight;\n    lodash.rearg = rearg;\n    lodash.reject = reject;\n    lodash.remove = remove;\n    lodash.rest = rest;\n    lodash.reverse = reverse;\n    lodash.sampleSize = sampleSize;\n    lodash.set = set;\n    lodash.setWith = setWith;\n    lodash.shuffle = shuffle;\n    lodash.slice = slice;\n    lodash.sortBy = sortBy;\n    lodash.sortedUniq = sortedUniq;\n    lodash.sortedUniqBy = sortedUniqBy;\n    lodash.split = split;\n    lodash.spread = spread;\n    lodash.tail = tail;\n    lodash.take = take;\n    lodash.takeRight = takeRight;\n    lodash.takeRightWhile = takeRightWhile;\n    lodash.takeWhile = takeWhile;\n    lodash.tap = tap;\n    lodash.throttle = throttle;\n    lodash.thru = thru;\n    lodash.toArray = toArray;\n    lodash.toPairs = toPairs;\n    lodash.toPairsIn = toPairsIn;\n    lodash.toPath = toPath;\n    lodash.toPlainObject = toPlainObject;\n    lodash.transform = transform;\n    lodash.unary = unary;\n    lodash.union = union;\n    lodash.unionBy = unionBy;\n    lodash.unionWith = unionWith;\n    lodash.uniq = uniq;\n    lodash.uniqBy = uniqBy;\n    lodash.uniqWith = uniqWith;\n    lodash.unset = unset;\n    lodash.unzip = unzip;\n    lodash.unzipWith = unzipWith;\n    lodash.update = update;\n    lodash.updateWith = updateWith;\n    lodash.values = values;\n    lodash.valuesIn = valuesIn;\n    lodash.without = without;\n    lodash.words = words;\n    lodash.wrap = wrap;\n    lodash.xor = xor;\n    lodash.xorBy = xorBy;\n    lodash.xorWith = xorWith;\n    lodash.zip = zip;\n    lodash.zipObject = zipObject;\n    lodash.zipObjectDeep = zipObjectDeep;\n    lodash.zipWith = zipWith; // Add aliases.\n\n    lodash.entries = toPairs;\n    lodash.entriesIn = toPairsIn;\n    lodash.extend = assignIn;\n    lodash.extendWith = assignInWith; // Add methods to `lodash.prototype`.\n\n    mixin(lodash, lodash);\n    /*------------------------------------------------------------------------*/\n    // Add methods that return unwrapped values in chain sequences.\n\n    lodash.add = add;\n    lodash.attempt = attempt;\n    lodash.camelCase = camelCase;\n    lodash.capitalize = capitalize;\n    lodash.ceil = ceil;\n    lodash.clamp = clamp;\n    lodash.clone = clone;\n    lodash.cloneDeep = cloneDeep;\n    lodash.cloneDeepWith = cloneDeepWith;\n    lodash.cloneWith = cloneWith;\n    lodash.conformsTo = conformsTo;\n    lodash.deburr = deburr;\n    lodash.defaultTo = defaultTo;\n    lodash.divide = divide;\n    lodash.endsWith = endsWith;\n    lodash.eq = eq;\n    lodash.escape = escape;\n    lodash.escapeRegExp = escapeRegExp;\n    lodash.every = every;\n    lodash.find = find;\n    lodash.findIndex = findIndex;\n    lodash.findKey = findKey;\n    lodash.findLast = findLast;\n    lodash.findLastIndex = findLastIndex;\n    lodash.findLastKey = findLastKey;\n    lodash.floor = floor;\n    lodash.forEach = forEach;\n    lodash.forEachRight = forEachRight;\n    lodash.forIn = forIn;\n    lodash.forInRight = forInRight;\n    lodash.forOwn = forOwn;\n    lodash.forOwnRight = forOwnRight;\n    lodash.get = get;\n    lodash.gt = gt;\n    lodash.gte = gte;\n    lodash.has = has;\n    lodash.hasIn = hasIn;\n    lodash.head = head;\n    lodash.identity = identity;\n    lodash.includes = includes;\n    lodash.indexOf = indexOf;\n    lodash.inRange = inRange;\n    lodash.invoke = invoke;\n    lodash.isArguments = isArguments;\n    lodash.isArray = isArray;\n    lodash.isArrayBuffer = isArrayBuffer;\n    lodash.isArrayLike = isArrayLike;\n    lodash.isArrayLikeObject = isArrayLikeObject;\n    lodash.isBoolean = isBoolean;\n    lodash.isBuffer = isBuffer;\n    lodash.isDate = isDate;\n    lodash.isElement = isElement;\n    lodash.isEmpty = isEmpty;\n    lodash.isEqual = isEqual;\n    lodash.isEqualWith = isEqualWith;\n    lodash.isError = isError;\n    lodash.isFinite = isFinite;\n    lodash.isFunction = isFunction;\n    lodash.isInteger = isInteger;\n    lodash.isLength = isLength;\n    lodash.isMap = isMap;\n    lodash.isMatch = isMatch;\n    lodash.isMatchWith = isMatchWith;\n    lodash.isNaN = isNaN;\n    lodash.isNative = isNative;\n    lodash.isNil = isNil;\n    lodash.isNull = isNull;\n    lodash.isNumber = isNumber;\n    lodash.isObject = isObject;\n    lodash.isObjectLike = isObjectLike;\n    lodash.isPlainObject = isPlainObject;\n    lodash.isRegExp = isRegExp;\n    lodash.isSafeInteger = isSafeInteger;\n    lodash.isSet = isSet;\n    lodash.isString = isString;\n    lodash.isSymbol = isSymbol;\n    lodash.isTypedArray = isTypedArray;\n    lodash.isUndefined = isUndefined;\n    lodash.isWeakMap = isWeakMap;\n    lodash.isWeakSet = isWeakSet;\n    lodash.join = join;\n    lodash.kebabCase = kebabCase;\n    lodash.last = last;\n    lodash.lastIndexOf = lastIndexOf;\n    lodash.lowerCase = lowerCase;\n    lodash.lowerFirst = lowerFirst;\n    lodash.lt = lt;\n    lodash.lte = lte;\n    lodash.max = max;\n    lodash.maxBy = maxBy;\n    lodash.mean = mean;\n    lodash.meanBy = meanBy;\n    lodash.min = min;\n    lodash.minBy = minBy;\n    lodash.stubArray = stubArray;\n    lodash.stubFalse = stubFalse;\n    lodash.stubObject = stubObject;\n    lodash.stubString = stubString;\n    lodash.stubTrue = stubTrue;\n    lodash.multiply = multiply;\n    lodash.nth = nth;\n    lodash.noConflict = noConflict;\n    lodash.noop = noop;\n    lodash.now = now;\n    lodash.pad = pad;\n    lodash.padEnd = padEnd;\n    lodash.padStart = padStart;\n    lodash.parseInt = parseInt;\n    lodash.random = random;\n    lodash.reduce = reduce;\n    lodash.reduceRight = reduceRight;\n    lodash.repeat = repeat;\n    lodash.replace = replace;\n    lodash.result = result;\n    lodash.round = round;\n    lodash.runInContext = runInContext;\n    lodash.sample = sample;\n    lodash.size = size;\n    lodash.snakeCase = snakeCase;\n    lodash.some = some;\n    lodash.sortedIndex = sortedIndex;\n    lodash.sortedIndexBy = sortedIndexBy;\n    lodash.sortedIndexOf = sortedIndexOf;\n    lodash.sortedLastIndex = sortedLastIndex;\n    lodash.sortedLastIndexBy = sortedLastIndexBy;\n    lodash.sortedLastIndexOf = sortedLastIndexOf;\n    lodash.startCase = startCase;\n    lodash.startsWith = startsWith;\n    lodash.subtract = subtract;\n    lodash.sum = sum;\n    lodash.sumBy = sumBy;\n    lodash.template = template;\n    lodash.times = times;\n    lodash.toFinite = toFinite;\n    lodash.toInteger = toInteger;\n    lodash.toLength = toLength;\n    lodash.toLower = toLower;\n    lodash.toNumber = toNumber;\n    lodash.toSafeInteger = toSafeInteger;\n    lodash.toString = toString;\n    lodash.toUpper = toUpper;\n    lodash.trim = trim;\n    lodash.trimEnd = trimEnd;\n    lodash.trimStart = trimStart;\n    lodash.truncate = truncate;\n    lodash.unescape = unescape;\n    lodash.uniqueId = uniqueId;\n    lodash.upperCase = upperCase;\n    lodash.upperFirst = upperFirst; // Add aliases.\n\n    lodash.each = forEach;\n    lodash.eachRight = forEachRight;\n    lodash.first = head;\n    mixin(lodash, function () {\n      var source = {};\n      baseForOwn(lodash, function (func, methodName) {\n        if (!hasOwnProperty.call(lodash.prototype, methodName)) {\n          source[methodName] = func;\n        }\n      });\n      return source;\n    }(), {\n      'chain': false\n    });\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * The semantic version number.\n     *\n     * @static\n     * @memberOf _\n     * @type {string}\n     */\n\n    lodash.VERSION = VERSION; // Assign default placeholders.\n\n    arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function (methodName) {\n      lodash[methodName].placeholder = lodash;\n    }); // Add `LazyWrapper` methods for `_.drop` and `_.take` variants.\n\n    arrayEach(['drop', 'take'], function (methodName, index) {\n      LazyWrapper.prototype[methodName] = function (n) {\n        n = n === undefined ? 1 : nativeMax(toInteger(n), 0);\n        var result = this.__filtered__ && !index ? new LazyWrapper(this) : this.clone();\n\n        if (result.__filtered__) {\n          result.__takeCount__ = nativeMin(n, result.__takeCount__);\n        } else {\n          result.__views__.push({\n            'size': nativeMin(n, MAX_ARRAY_LENGTH),\n            'type': methodName + (result.__dir__ < 0 ? 'Right' : '')\n          });\n        }\n\n        return result;\n      };\n\n      LazyWrapper.prototype[methodName + 'Right'] = function (n) {\n        return this.reverse()[methodName](n).reverse();\n      };\n    }); // Add `LazyWrapper` methods that accept an `iteratee` value.\n\n    arrayEach(['filter', 'map', 'takeWhile'], function (methodName, index) {\n      var type = index + 1,\n          isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG;\n\n      LazyWrapper.prototype[methodName] = function (iteratee) {\n        var result = this.clone();\n\n        result.__iteratees__.push({\n          'iteratee': getIteratee(iteratee, 3),\n          'type': type\n        });\n\n        result.__filtered__ = result.__filtered__ || isFilter;\n        return result;\n      };\n    }); // Add `LazyWrapper` methods for `_.head` and `_.last`.\n\n    arrayEach(['head', 'last'], function (methodName, index) {\n      var takeName = 'take' + (index ? 'Right' : '');\n\n      LazyWrapper.prototype[methodName] = function () {\n        return this[takeName](1).value()[0];\n      };\n    }); // Add `LazyWrapper` methods for `_.initial` and `_.tail`.\n\n    arrayEach(['initial', 'tail'], function (methodName, index) {\n      var dropName = 'drop' + (index ? '' : 'Right');\n\n      LazyWrapper.prototype[methodName] = function () {\n        return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1);\n      };\n    });\n\n    LazyWrapper.prototype.compact = function () {\n      return this.filter(identity);\n    };\n\n    LazyWrapper.prototype.find = function (predicate) {\n      return this.filter(predicate).head();\n    };\n\n    LazyWrapper.prototype.findLast = function (predicate) {\n      return this.reverse().find(predicate);\n    };\n\n    LazyWrapper.prototype.invokeMap = baseRest(function (path, args) {\n      if (typeof path == 'function') {\n        return new LazyWrapper(this);\n      }\n\n      return this.map(function (value) {\n        return baseInvoke(value, path, args);\n      });\n    });\n\n    LazyWrapper.prototype.reject = function (predicate) {\n      return this.filter(negate(getIteratee(predicate)));\n    };\n\n    LazyWrapper.prototype.slice = function (start, end) {\n      start = toInteger(start);\n      var result = this;\n\n      if (result.__filtered__ && (start > 0 || end < 0)) {\n        return new LazyWrapper(result);\n      }\n\n      if (start < 0) {\n        result = result.takeRight(-start);\n      } else if (start) {\n        result = result.drop(start);\n      }\n\n      if (end !== undefined) {\n        end = toInteger(end);\n        result = end < 0 ? result.dropRight(-end) : result.take(end - start);\n      }\n\n      return result;\n    };\n\n    LazyWrapper.prototype.takeRightWhile = function (predicate) {\n      return this.reverse().takeWhile(predicate).reverse();\n    };\n\n    LazyWrapper.prototype.toArray = function () {\n      return this.take(MAX_ARRAY_LENGTH);\n    }; // Add `LazyWrapper` methods to `lodash.prototype`.\n\n\n    baseForOwn(LazyWrapper.prototype, function (func, methodName) {\n      var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName),\n          isTaker = /^(?:head|last)$/.test(methodName),\n          lodashFunc = lodash[isTaker ? 'take' + (methodName == 'last' ? 'Right' : '') : methodName],\n          retUnwrapped = isTaker || /^find/.test(methodName);\n\n      if (!lodashFunc) {\n        return;\n      }\n\n      lodash.prototype[methodName] = function () {\n        var value = this.__wrapped__,\n            args = isTaker ? [1] : arguments,\n            isLazy = value instanceof LazyWrapper,\n            iteratee = args[0],\n            useLazy = isLazy || isArray(value);\n\n        var interceptor = function interceptor(value) {\n          var result = lodashFunc.apply(lodash, arrayPush([value], args));\n          return isTaker && chainAll ? result[0] : result;\n        };\n\n        if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) {\n          // Avoid lazy use if the iteratee has a \"length\" value other than `1`.\n          isLazy = useLazy = false;\n        }\n\n        var chainAll = this.__chain__,\n            isHybrid = !!this.__actions__.length,\n            isUnwrapped = retUnwrapped && !chainAll,\n            onlyLazy = isLazy && !isHybrid;\n\n        if (!retUnwrapped && useLazy) {\n          value = onlyLazy ? value : new LazyWrapper(this);\n          var result = func.apply(value, args);\n\n          result.__actions__.push({\n            'func': thru,\n            'args': [interceptor],\n            'thisArg': undefined\n          });\n\n          return new LodashWrapper(result, chainAll);\n        }\n\n        if (isUnwrapped && onlyLazy) {\n          return func.apply(this, args);\n        }\n\n        result = this.thru(interceptor);\n        return isUnwrapped ? isTaker ? result.value()[0] : result.value() : result;\n      };\n    }); // Add `Array` methods to `lodash.prototype`.\n\n    arrayEach(['pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function (methodName) {\n      var func = arrayProto[methodName],\n          chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru',\n          retUnwrapped = /^(?:pop|shift)$/.test(methodName);\n\n      lodash.prototype[methodName] = function () {\n        var args = arguments;\n\n        if (retUnwrapped && !this.__chain__) {\n          var value = this.value();\n          return func.apply(isArray(value) ? value : [], args);\n        }\n\n        return this[chainName](function (value) {\n          return func.apply(isArray(value) ? value : [], args);\n        });\n      };\n    }); // Map minified method names to their real names.\n\n    baseForOwn(LazyWrapper.prototype, function (func, methodName) {\n      var lodashFunc = lodash[methodName];\n\n      if (lodashFunc) {\n        var key = lodashFunc.name + '';\n\n        if (!hasOwnProperty.call(realNames, key)) {\n          realNames[key] = [];\n        }\n\n        realNames[key].push({\n          'name': methodName,\n          'func': lodashFunc\n        });\n      }\n    });\n    realNames[createHybrid(undefined, WRAP_BIND_KEY_FLAG).name] = [{\n      'name': 'wrapper',\n      'func': undefined\n    }]; // Add methods to `LazyWrapper`.\n\n    LazyWrapper.prototype.clone = lazyClone;\n    LazyWrapper.prototype.reverse = lazyReverse;\n    LazyWrapper.prototype.value = lazyValue; // Add chain sequence methods to the `lodash` wrapper.\n\n    lodash.prototype.at = wrapperAt;\n    lodash.prototype.chain = wrapperChain;\n    lodash.prototype.commit = wrapperCommit;\n    lodash.prototype.next = wrapperNext;\n    lodash.prototype.plant = wrapperPlant;\n    lodash.prototype.reverse = wrapperReverse;\n    lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue; // Add lazy aliases.\n\n    lodash.prototype.first = lodash.prototype.head;\n\n    if (symIterator) {\n      lodash.prototype[symIterator] = wrapperToIterator;\n    }\n\n    return lodash;\n  };\n  /*--------------------------------------------------------------------------*/\n  // Export lodash.\n\n\n  var _ = runInContext(); // Some AMD build optimizers, like r.js, check for condition patterns like:\n\n\n  if (typeof define == 'function' && _typeof(define.amd) == 'object' && define.amd) {\n    // Expose Lodash on the global object to prevent errors when Lodash is\n    // loaded by a script tag in the presence of an AMD loader.\n    // See http://requirejs.org/docs/errors.html#mismatch for more details.\n    // Use `_.noConflict` to remove Lodash from the global object.\n    root._ = _; // Define as an anonymous module so, through path mapping, it can be\n    // referenced as the \"underscore\" module.\n\n    define(function () {\n      return _;\n    });\n  } // Check for `exports` after `define` in case a build optimizer adds it.\n  else if (freeModule) {\n    // Export for Node.js.\n    (freeModule.exports = _)._ = _; // Export for CommonJS support.\n\n    freeExports._ = _;\n  } else {\n    // Export to the global object.\n    root._ = _;\n  }\n}).call(this);","function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }\n\nfunction _nonIterableRest() { throw new TypeError(\"Invalid attempt to destructure non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\"); }\n\nfunction _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === \"string\") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === \"Object\" && o.constructor) n = o.constructor.name; if (n === \"Map\" || n === \"Set\") return Array.from(o); if (n === \"Arguments\" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }\n\nfunction _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }\n\nfunction _iterableToArrayLimit(arr, i) { var _i = arr == null ? null : typeof Symbol !== \"undefined\" && arr[Symbol.iterator] || arr[\"@@iterator\"]; if (_i == null) return; var _arr = []; var _n = true; var _d = false; var _s, _e; try { for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i[\"return\"] != null) _i[\"return\"](); } finally { if (_d) throw _e; } } return _arr; }\n\nfunction _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, \"prototype\", { writable: false }); return Constructor; }\n\nimport { ɵɵdefineInjectable, ɵɵinject, PLATFORM_ID, Injectable, Inject, InjectionToken } from '@angular/core';\nimport { isPlatformBrowser, DOCUMENT } from '@angular/common'; // This service is based on the `ng2-cookies` package which sadly is not a service and does\n\nvar CookieService = /*#__PURE__*/function () {\n  function CookieService( // The type `Document` may not be used here. Although a fix is on its way,\n  // we will go with `any` for now to support Angular 2.4.x projects.\n  // Issue: https://github.com/angular/angular/issues/12631\n  // Fix: https://github.com/angular/angular/pull/14894\n  document, // Get the `PLATFORM_ID` so we can check if we're in a browser.\n  platformId) {\n    _classCallCheck(this, CookieService);\n\n    this.document = document;\n    this.platformId = platformId;\n    this.documentIsAccessible = isPlatformBrowser(this.platformId);\n  }\n  /**\n   * @param name Cookie name\n   * @returns boolean - whether cookie with specified name exists\n   */\n\n\n  _createClass(CookieService, [{\n    key: \"check\",\n    value: function check(name) {\n      if (!this.documentIsAccessible) {\n        return false;\n      }\n\n      name = encodeURIComponent(name);\n      var regExp = this.getCookieRegExp(name);\n      var exists = regExp.test(this.document.cookie);\n      return exists;\n    }\n    /**\n     * @param name Cookie name\n     * @returns property value\n     */\n\n  }, {\n    key: \"get\",\n    value: function get(name) {\n      if (this.documentIsAccessible && this.check(name)) {\n        name = encodeURIComponent(name);\n        var regExp = this.getCookieRegExp(name);\n        var result = regExp.exec(this.document.cookie);\n        return this.safeDecodeURIComponent(result[1]);\n      } else {\n        return '';\n      }\n    }\n    /**\n     * @returns all the cookies in json\n     */\n\n  }, {\n    key: \"getAll\",\n    value: function getAll() {\n      var _this = this;\n\n      if (!this.documentIsAccessible) {\n        return {};\n      }\n\n      var cookies = {};\n      var document = this.document;\n\n      if (document.cookie && document.cookie !== '') {\n        document.cookie.split(';').forEach(function (currentCookie) {\n          var _currentCookie$split = currentCookie.split('='),\n              _currentCookie$split2 = _slicedToArray(_currentCookie$split, 2),\n              cookieName = _currentCookie$split2[0],\n              cookieValue = _currentCookie$split2[1];\n\n          cookies[_this.safeDecodeURIComponent(cookieName.replace(/^ /, ''))] = _this.safeDecodeURIComponent(cookieValue);\n        });\n      }\n\n      return cookies;\n    }\n  }, {\n    key: \"set\",\n    value: function set(name, value, expiresOrOptions, path, domain, secure, sameSite) {\n      if (!this.documentIsAccessible) {\n        return;\n      }\n\n      if (typeof expiresOrOptions === 'number' || expiresOrOptions instanceof Date || path || domain || secure || sameSite) {\n        var optionsBody = {\n          expires: expiresOrOptions,\n          path: path,\n          domain: domain,\n          secure: secure,\n          sameSite: sameSite ? sameSite : 'Lax'\n        };\n        this.set(name, value, optionsBody);\n        return;\n      }\n\n      var cookieString = encodeURIComponent(name) + '=' + encodeURIComponent(value) + ';';\n      var options = expiresOrOptions ? expiresOrOptions : {};\n\n      if (options.expires) {\n        if (typeof options.expires === 'number') {\n          var dateExpires = new Date(new Date().getTime() + options.expires * 1000 * 60 * 60 * 24);\n          cookieString += 'expires=' + dateExpires.toUTCString() + ';';\n        } else {\n          cookieString += 'expires=' + options.expires.toUTCString() + ';';\n        }\n      }\n\n      if (options.path) {\n        cookieString += 'path=' + options.path + ';';\n      }\n\n      if (options.domain) {\n        cookieString += 'domain=' + options.domain + ';';\n      }\n\n      if (options.secure === false && options.sameSite === 'None') {\n        options.secure = true;\n        console.warn(\"[ngx-cookie-service] Cookie \".concat(name, \" was forced with secure flag because sameSite=None.\") + \"More details : https://github.com/stevermeister/ngx-cookie-service/issues/86#issuecomment-597720130\");\n      }\n\n      if (options.secure) {\n        cookieString += 'secure;';\n      }\n\n      if (!options.sameSite) {\n        options.sameSite = 'Lax';\n      }\n\n      cookieString += 'sameSite=' + options.sameSite + ';';\n      this.document.cookie = cookieString;\n    }\n    /**\n     * @param name   Cookie name\n     * @param path   Cookie path\n     * @param domain Cookie domain\n     */\n\n  }, {\n    key: \"delete\",\n    value: function _delete(name, path, domain, secure) {\n      var sameSite = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 'Lax';\n\n      if (!this.documentIsAccessible) {\n        return;\n      }\n\n      var expiresDate = new Date('Thu, 01 Jan 1970 00:00:01 GMT');\n      this.set(name, '', {\n        expires: expiresDate,\n        path: path,\n        domain: domain,\n        secure: secure,\n        sameSite: sameSite\n      });\n    }\n    /**\n     * @param path   Cookie path\n     * @param domain Cookie domain\n     */\n\n  }, {\n    key: \"deleteAll\",\n    value: function deleteAll(path, domain, secure) {\n      var sameSite = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 'Lax';\n\n      if (!this.documentIsAccessible) {\n        return;\n      }\n\n      var cookies = this.getAll();\n\n      for (var cookieName in cookies) {\n        if (cookies.hasOwnProperty(cookieName)) {\n          this.delete(cookieName, path, domain, secure, sameSite);\n        }\n      }\n    }\n    /**\n     * @param name Cookie name\n     * @returns property RegExp\n     */\n\n  }, {\n    key: \"getCookieRegExp\",\n    value: function getCookieRegExp(name) {\n      var escapedName = name.replace(/([\\[\\]\\{\\}\\(\\)\\|\\=\\;\\+\\?\\,\\.\\*\\^\\$])/gi, '\\\\$1');\n      return new RegExp('(?:^' + escapedName + '|;\\\\s*' + escapedName + ')=(.*?)(?:;|$)', 'g');\n    }\n  }, {\n    key: \"safeDecodeURIComponent\",\n    value: function safeDecodeURIComponent(encodedURIComponent) {\n      try {\n        return decodeURIComponent(encodedURIComponent);\n      } catch (_a) {\n        // probably it is not uri encoded. return as is\n        return encodedURIComponent;\n      }\n    }\n  }]);\n\n  return CookieService;\n}();\n\nCookieService.ɵprov = ɵɵdefineInjectable({\n  factory: function CookieService_Factory() {\n    return new CookieService(ɵɵinject(DOCUMENT), ɵɵinject(PLATFORM_ID));\n  },\n  token: CookieService,\n  providedIn: \"root\"\n});\nCookieService.decorators = [{\n  type: Injectable,\n  args: [{\n    providedIn: 'root'\n  }]\n}];\n\nCookieService.ctorParameters = function () {\n  return [{\n    type: undefined,\n    decorators: [{\n      type: Inject,\n      args: [DOCUMENT]\n    }]\n  }, {\n    type: InjectionToken,\n    decorators: [{\n      type: Inject,\n      args: [PLATFORM_ID]\n    }]\n  }];\n};\n/*\n * Public API Surface of ngx-cookie-service\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\n\nexport { CookieService };","var wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar TO_STRING_TAG = wellKnownSymbol('toStringTag');\nvar test = {};\n\ntest[TO_STRING_TAG] = 'z';\n\nmodule.exports = String(test) === '[object z]';\n","var IS_PURE = require('../internals/is-pure');\nvar store = require('../internals/shared-store');\n\n(module.exports = function (key, value) {\n  return store[key] || (store[key] = value !== undefined ? value : {});\n})('versions', []).push({\n  version: '3.21.1',\n  mode: IS_PURE ? 'pure' : 'global',\n  copyright: '© 2014-2022 Denis Pushkarev (zloirock.ru)',\n  license: 'https://github.com/zloirock/core-js/blob/v3.21.1/LICENSE',\n  source: 'https://github.com/zloirock/core-js'\n});\n","module.exports = false;\n","var global = require('../internals/global');\nvar setGlobal = require('../internals/set-global');\n\nvar SHARED = '__core-js_shared__';\nvar store = global[SHARED] || setGlobal(SHARED, {});\n\nmodule.exports = store;\n","var global = require('../internals/global');\n\n// eslint-disable-next-line es/no-object-defineproperty -- safe\nvar defineProperty = Object.defineProperty;\n\nmodule.exports = function (key, value) {\n  try {\n    defineProperty(global, key, { value: value, configurable: true, writable: true });\n  } catch (error) {\n    global[key] = value;\n  } return value;\n};\n","var uncurryThis = require('../internals/function-uncurry-this');\n\nvar id = 0;\nvar postfix = Math.random();\nvar toString = uncurryThis(1.0.toString);\n\nmodule.exports = function (key) {\n  return 'Symbol(' + (key === undefined ? '' : key) + ')_' + toString(++id + postfix, 36);\n};\n","var uncurryThis = require('../internals/function-uncurry-this');\n\nmodule.exports = uncurryThis({}.isPrototypeOf);\n","var aCallable = require('../internals/a-callable');\n\n// `GetMethod` abstract operation\n// https://tc39.es/ecma262/#sec-getmethod\nmodule.exports = function (V, P) {\n  var func = V[P];\n  return func == null ? undefined : aCallable(func);\n};\n","var uncurryThis = require('../internals/function-uncurry-this');\nvar isCallable = require('../internals/is-callable');\nvar store = require('../internals/shared-store');\n\nvar functionToString = uncurryThis(Function.toString);\n\n// this helper broken in `core-js@3.4.1-3.4.4`, so we can't use `shared` helper\nif (!isCallable(store.inspectSource)) {\n  store.inspectSource = function (it) {\n    return functionToString(it);\n  };\n}\n\nmodule.exports = store.inspectSource;\n","var shared = require('../internals/shared');\nvar uid = require('../internals/uid');\n\nvar keys = shared('keys');\n\nmodule.exports = function (key) {\n  return keys[key] || (keys[key] = uid(key));\n};\n","var global = require('../internals/global');\nvar TO_STRING_TAG_SUPPORT = require('../internals/to-string-tag-support');\nvar isCallable = require('../internals/is-callable');\nvar classofRaw = require('../internals/classof-raw');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar TO_STRING_TAG = wellKnownSymbol('toStringTag');\nvar Object = global.Object;\n\n// ES3 wrong here\nvar CORRECT_ARGUMENTS = classofRaw(function () { return arguments; }()) == 'Arguments';\n\n// fallback for IE11 Script Access Denied error\nvar tryGet = function (it, key) {\n  try {\n    return it[key];\n  } catch (error) { /* empty */ }\n};\n\n// getting tag from ES6+ `Object.prototype.toString`\nmodule.exports = TO_STRING_TAG_SUPPORT ? classofRaw : function (it) {\n  var O, tag, result;\n  return it === undefined ? 'Undefined' : it === null ? 'Null'\n    // @@toStringTag case\n    : typeof (tag = tryGet(O = Object(it), TO_STRING_TAG)) == 'string' ? tag\n    // builtinTag case\n    : CORRECT_ARGUMENTS ? classofRaw(O)\n    // ES3 arguments fallback\n    : (result = classofRaw(O)) == 'Object' && isCallable(O.callee) ? 'Arguments' : result;\n};\n","var internalObjectKeys = require('../internals/object-keys-internal');\nvar enumBugKeys = require('../internals/enum-bug-keys');\n\nvar hiddenKeys = enumBugKeys.concat('length', 'prototype');\n\n// `Object.getOwnPropertyNames` method\n// https://tc39.es/ecma262/#sec-object.getownpropertynames\n// eslint-disable-next-line es/no-object-getownpropertynames -- safe\nexports.f = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {\n  return internalObjectKeys(O, hiddenKeys);\n};\n","// IE8- don't enum bug keys\nmodule.exports = [\n  'constructor',\n  'hasOwnProperty',\n  'isPrototypeOf',\n  'propertyIsEnumerable',\n  'toLocaleString',\n  'toString',\n  'valueOf'\n];\n","var fails = require('../internals/fails');\nvar isObject = require('../internals/is-object');\nvar classof = require('../internals/classof-raw');\nvar ARRAY_BUFFER_NON_EXTENSIBLE = require('../internals/array-buffer-non-extensible');\n\n// eslint-disable-next-line es/no-object-isextensible -- safe\nvar $isExtensible = Object.isExtensible;\nvar FAILS_ON_PRIMITIVES = fails(function () { $isExtensible(1); });\n\n// `Object.isExtensible` method\n// https://tc39.es/ecma262/#sec-object.isextensible\nmodule.exports = (FAILS_ON_PRIMITIVES || ARRAY_BUFFER_NON_EXTENSIBLE) ? function isExtensible(it) {\n  if (!isObject(it)) return false;\n  if (ARRAY_BUFFER_NON_EXTENSIBLE && classof(it) == 'ArrayBuffer') return false;\n  return $isExtensible ? $isExtensible(it) : true;\n} : $isExtensible;\n","/* eslint-disable no-proto -- safe */\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar anObject = require('../internals/an-object');\nvar aPossiblePrototype = require('../internals/a-possible-prototype');\n\n// `Object.setPrototypeOf` method\n// https://tc39.es/ecma262/#sec-object.setprototypeof\n// Works with __proto__ only. Old v8 can't work with null proto objects.\n// eslint-disable-next-line es/no-object-setprototypeof -- safe\nmodule.exports = Object.setPrototypeOf || ('__proto__' in {} ? function () {\n  var CORRECT_SETTER = false;\n  var test = {};\n  var setter;\n  try {\n    // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\n    setter = uncurryThis(Object.getOwnPropertyDescriptor(Object.prototype, '__proto__').set);\n    setter(test, []);\n    CORRECT_SETTER = test instanceof Array;\n  } catch (error) { /* empty */ }\n  return function setPrototypeOf(O, proto) {\n    anObject(O);\n    aPossiblePrototype(proto);\n    if (CORRECT_SETTER) setter(O, proto);\n    else O.__proto__ = proto;\n    return O;\n  };\n}() : undefined);\n","var global = require('../internals/global');\nvar bind = require('../internals/function-bind-context');\nvar call = require('../internals/function-call');\nvar anObject = require('../internals/an-object');\nvar tryToString = require('../internals/try-to-string');\nvar isArrayIteratorMethod = require('../internals/is-array-iterator-method');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\nvar getIterator = require('../internals/get-iterator');\nvar getIteratorMethod = require('../internals/get-iterator-method');\nvar iteratorClose = require('../internals/iterator-close');\n\nvar TypeError = global.TypeError;\n\nvar Result = function (stopped, result) {\n  this.stopped = stopped;\n  this.result = result;\n};\n\nvar ResultPrototype = Result.prototype;\n\nmodule.exports = function (iterable, unboundFunction, options) {\n  var that = options && options.that;\n  var AS_ENTRIES = !!(options && options.AS_ENTRIES);\n  var IS_ITERATOR = !!(options && options.IS_ITERATOR);\n  var INTERRUPTED = !!(options && options.INTERRUPTED);\n  var fn = bind(unboundFunction, that);\n  var iterator, iterFn, index, length, result, next, step;\n\n  var stop = function (condition) {\n    if (iterator) iteratorClose(iterator, 'normal', condition);\n    return new Result(true, condition);\n  };\n\n  var callFn = function (value) {\n    if (AS_ENTRIES) {\n      anObject(value);\n      return INTERRUPTED ? fn(value[0], value[1], stop) : fn(value[0], value[1]);\n    } return INTERRUPTED ? fn(value, stop) : fn(value);\n  };\n\n  if (IS_ITERATOR) {\n    iterator = iterable;\n  } else {\n    iterFn = getIteratorMethod(iterable);\n    if (!iterFn) throw TypeError(tryToString(iterable) + ' is not iterable');\n    // optimisation for array iterators\n    if (isArrayIteratorMethod(iterFn)) {\n      for (index = 0, length = lengthOfArrayLike(iterable); length > index; index++) {\n        result = callFn(iterable[index]);\n        if (result && isPrototypeOf(ResultPrototype, result)) return result;\n      } return new Result(false);\n    }\n    iterator = getIterator(iterable, iterFn);\n  }\n\n  next = iterator.next;\n  while (!(step = call(next, iterator)).done) {\n    try {\n      result = callFn(step.value);\n    } catch (error) {\n      iteratorClose(iterator, 'throw', error);\n    }\n    if (typeof result == 'object' && result && isPrototypeOf(ResultPrototype, result)) return result;\n  } return new Result(false);\n};\n","var uncurryThis = require('../internals/function-uncurry-this');\nvar aCallable = require('../internals/a-callable');\nvar NATIVE_BIND = require('../internals/function-bind-native');\n\nvar bind = uncurryThis(uncurryThis.bind);\n\n// optional / simple context binding\nmodule.exports = function (fn, that) {\n  aCallable(fn);\n  return that === undefined ? fn : NATIVE_BIND ? bind(fn, that) : function (/* ...args */) {\n    return fn.apply(that, arguments);\n  };\n};\n","var global = require('../internals/global');\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\n\nvar TypeError = global.TypeError;\n\nmodule.exports = function (it, Prototype) {\n  if (isPrototypeOf(Prototype, it)) return it;\n  throw TypeError('Incorrect invocation');\n};\n","var defineProperty = require('../internals/object-define-property').f;\nvar hasOwn = require('../internals/has-own-property');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar TO_STRING_TAG = wellKnownSymbol('toStringTag');\n\nmodule.exports = function (target, TAG, STATIC) {\n  if (target && !STATIC) target = target.prototype;\n  if (target && !hasOwn(target, TO_STRING_TAG)) {\n    defineProperty(target, TO_STRING_TAG, { configurable: true, value: TAG });\n  }\n};\n","var redefine = require('../internals/redefine');\n\nmodule.exports = function (target, src, options) {\n  for (var key in src) redefine(target, key, src[key], options);\n  return target;\n};\n","var global = require('../internals/global');\n\nvar TypeError = global.TypeError;\n\n// `RequireObjectCoercible` abstract operation\n// https://tc39.es/ecma262/#sec-requireobjectcoercible\nmodule.exports = function (it) {\n  if (it == undefined) throw TypeError(\"Can't call method on \" + it);\n  return it;\n};\n","/* eslint-disable es/no-symbol -- required for testing */\nvar V8_VERSION = require('../internals/engine-v8-version');\nvar fails = require('../internals/fails');\n\n// eslint-disable-next-line es/no-object-getownpropertysymbols -- required for testing\nmodule.exports = !!Object.getOwnPropertySymbols && !fails(function () {\n  var symbol = Symbol();\n  // Chrome 38 Symbol has incorrect toString conversion\n  // `get-own-property-symbols` polyfill symbols converted to object are not Symbol instances\n  return !String(symbol) || !(Object(symbol) instanceof Symbol) ||\n    // Chrome 38-40 symbols are not inherited from DOM collections prototypes to instances\n    !Symbol.sham && V8_VERSION && V8_VERSION < 41;\n});\n","/* eslint-disable es/no-symbol -- required for testing */\nvar NATIVE_SYMBOL = require('../internals/native-symbol');\n\nmodule.exports = NATIVE_SYMBOL\n  && !Symbol.sham\n  && typeof Symbol.iterator == 'symbol';\n","var DESCRIPTORS = require('../internals/descriptors');\nvar fails = require('../internals/fails');\nvar createElement = require('../internals/document-create-element');\n\n// Thanks to IE8 for its funny defineProperty\nmodule.exports = !DESCRIPTORS && !fails(function () {\n  // eslint-disable-next-line es/no-object-defineproperty -- required for testing\n  return Object.defineProperty(createElement('div'), 'a', {\n    get: function () { return 7; }\n  }).a != 7;\n});\n","var global = require('../internals/global');\nvar isObject = require('../internals/is-object');\n\nvar document = global.document;\n// typeof document.createElement is 'object' in old IE\nvar EXISTS = isObject(document) && isObject(document.createElement);\n\nmodule.exports = function (it) {\n  return EXISTS ? document.createElement(it) : {};\n};\n","var DESCRIPTORS = require('../internals/descriptors');\nvar fails = require('../internals/fails');\n\n// V8 ~ Chrome 36-\n// https://bugs.chromium.org/p/v8/issues/detail?id=3334\nmodule.exports = DESCRIPTORS && fails(function () {\n  // eslint-disable-next-line es/no-object-defineproperty -- required for testing\n  return Object.defineProperty(function () { /* empty */ }, 'prototype', {\n    value: 42,\n    writable: false\n  }).prototype != 42;\n});\n","var global = require('../internals/global');\nvar getBuiltIn = require('../internals/get-built-in');\nvar isCallable = require('../internals/is-callable');\nvar isPrototypeOf = require('../internals/object-is-prototype-of');\nvar USE_SYMBOL_AS_UID = require('../internals/use-symbol-as-uid');\n\nvar Object = global.Object;\n\nmodule.exports = USE_SYMBOL_AS_UID ? function (it) {\n  return typeof it == 'symbol';\n} : function (it) {\n  var $Symbol = getBuiltIn('Symbol');\n  return isCallable($Symbol) && isPrototypeOf($Symbol.prototype, Object(it));\n};\n","var global = require('../internals/global');\nvar isCallable = require('../internals/is-callable');\nvar inspectSource = require('../internals/inspect-source');\n\nvar WeakMap = global.WeakMap;\n\nmodule.exports = isCallable(WeakMap) && /native code/.test(inspectSource(WeakMap));\n","var DESCRIPTORS = require('../internals/descriptors');\nvar hasOwn = require('../internals/has-own-property');\n\nvar FunctionPrototype = Function.prototype;\n// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\nvar getDescriptor = DESCRIPTORS && Object.getOwnPropertyDescriptor;\n\nvar EXISTS = hasOwn(FunctionPrototype, 'name');\n// additional protection from minified / mangled / dropped function names\nvar PROPER = EXISTS && (function something() { /* empty */ }).name === 'something';\nvar CONFIGURABLE = EXISTS && (!DESCRIPTORS || (DESCRIPTORS && getDescriptor(FunctionPrototype, 'name').configurable));\n\nmodule.exports = {\n  EXISTS: EXISTS,\n  PROPER: PROPER,\n  CONFIGURABLE: CONFIGURABLE\n};\n","var global = require('../internals/global');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar fails = require('../internals/fails');\nvar classof = require('../internals/classof-raw');\n\nvar Object = global.Object;\nvar split = uncurryThis(''.split);\n\n// fallback for non-array-like ES3 and non-enumerable old V8 strings\nmodule.exports = fails(function () {\n  // throws an error in rhino, see https://github.com/mozilla/rhino/issues/346\n  // eslint-disable-next-line no-prototype-builtins -- safe\n  return !Object('z').propertyIsEnumerable(0);\n}) ? function (it) {\n  return classof(it) == 'String' ? split(it, '') : Object(it);\n} : Object;\n","var getBuiltIn = require('../internals/get-built-in');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar getOwnPropertyNamesModule = require('../internals/object-get-own-property-names');\nvar getOwnPropertySymbolsModule = require('../internals/object-get-own-property-symbols');\nvar anObject = require('../internals/an-object');\n\nvar concat = uncurryThis([].concat);\n\n// all object keys, includes non-enumerable and symbols\nmodule.exports = getBuiltIn('Reflect', 'ownKeys') || function ownKeys(it) {\n  var keys = getOwnPropertyNamesModule.f(anObject(it));\n  var getOwnPropertySymbols = getOwnPropertySymbolsModule.f;\n  return getOwnPropertySymbols ? concat(keys, getOwnPropertySymbols(it)) : keys;\n};\n","var uncurryThis = require('../internals/function-uncurry-this');\nvar hasOwn = require('../internals/has-own-property');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar indexOf = require('../internals/array-includes').indexOf;\nvar hiddenKeys = require('../internals/hidden-keys');\n\nvar push = uncurryThis([].push);\n\nmodule.exports = function (object, names) {\n  var O = toIndexedObject(object);\n  var i = 0;\n  var result = [];\n  var key;\n  for (key in O) !hasOwn(hiddenKeys, key) && hasOwn(O, key) && push(result, key);\n  // Don't enum bug & hidden keys\n  while (names.length > i) if (hasOwn(O, key = names[i++])) {\n    ~indexOf(result, key) || push(result, key);\n  }\n  return result;\n};\n","var toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\n\nvar max = Math.max;\nvar min = Math.min;\n\n// Helper for a popular repeating case of the spec:\n// Let integer be ? ToInteger(index).\n// If integer < 0, let result be max((length + integer), 0); else let result be min(integer, length).\nmodule.exports = function (index, length) {\n  var integer = toIntegerOrInfinity(index);\n  return integer < 0 ? max(integer + length, 0) : min(integer, length);\n};\n","var ceil = Math.ceil;\nvar floor = Math.floor;\n\n// `ToIntegerOrInfinity` abstract operation\n// https://tc39.es/ecma262/#sec-tointegerorinfinity\nmodule.exports = function (argument) {\n  var number = +argument;\n  // eslint-disable-next-line no-self-compare -- safe\n  return number !== number || number === 0 ? 0 : (number > 0 ? floor : ceil)(number);\n};\n","var fails = require('../internals/fails');\nvar isCallable = require('../internals/is-callable');\n\nvar replacement = /#|\\.prototype\\./;\n\nvar isForced = function (feature, detection) {\n  var value = data[normalize(feature)];\n  return value == POLYFILL ? true\n    : value == NATIVE ? false\n    : isCallable(detection) ? fails(detection)\n    : !!detection;\n};\n\nvar normalize = isForced.normalize = function (string) {\n  return String(string).replace(replacement, '.').toLowerCase();\n};\n\nvar data = isForced.data = {};\nvar NATIVE = isForced.NATIVE = 'N';\nvar POLYFILL = isForced.POLYFILL = 'P';\n\nmodule.exports = isForced;\n","var NATIVE_BIND = require('../internals/function-bind-native');\n\nvar FunctionPrototype = Function.prototype;\nvar apply = FunctionPrototype.apply;\nvar call = FunctionPrototype.call;\n\n// eslint-disable-next-line es/no-reflect -- safe\nmodule.exports = typeof Reflect == 'object' && Reflect.apply || (NATIVE_BIND ? call.bind(apply) : function () {\n  return call.apply(apply, arguments);\n});\n","var uncurryThis = require('../internals/function-uncurry-this');\nvar fails = require('../internals/fails');\nvar isCallable = require('../internals/is-callable');\nvar classof = require('../internals/classof');\nvar getBuiltIn = require('../internals/get-built-in');\nvar inspectSource = require('../internals/inspect-source');\n\nvar noop = function () { /* empty */ };\nvar empty = [];\nvar construct = getBuiltIn('Reflect', 'construct');\nvar constructorRegExp = /^\\s*(?:class|function)\\b/;\nvar exec = uncurryThis(constructorRegExp.exec);\nvar INCORRECT_TO_STRING = !constructorRegExp.exec(noop);\n\nvar isConstructorModern = function isConstructor(argument) {\n  if (!isCallable(argument)) return false;\n  try {\n    construct(noop, empty, argument);\n    return true;\n  } catch (error) {\n    return false;\n  }\n};\n\nvar isConstructorLegacy = function isConstructor(argument) {\n  if (!isCallable(argument)) return false;\n  switch (classof(argument)) {\n    case 'AsyncFunction':\n    case 'GeneratorFunction':\n    case 'AsyncGeneratorFunction': return false;\n  }\n  try {\n    // we can't check .prototype since constructors produced by .bind haven't it\n    // `Function#toString` throws on some built-it function in some legacy engines\n    // (for example, `DOMQuad` and similar in FF41-)\n    return INCORRECT_TO_STRING || !!exec(constructorRegExp, inspectSource(argument));\n  } catch (error) {\n    return true;\n  }\n};\n\nisConstructorLegacy.sham = true;\n\n// `IsConstructor` abstract operation\n// https://tc39.es/ecma262/#sec-isconstructor\nmodule.exports = !construct || fails(function () {\n  var called;\n  return isConstructorModern(isConstructorModern.call)\n    || !isConstructorModern(Object)\n    || !isConstructorModern(function () { called = true; })\n    || called;\n}) ? isConstructorLegacy : isConstructorModern;\n","var hasOwn = require('../internals/has-own-property');\n\nmodule.exports = function (descriptor) {\n  return descriptor !== undefined && (hasOwn(descriptor, 'value') || hasOwn(descriptor, 'writable'));\n};\n","var fails = require('../internals/fails');\n\nmodule.exports = !fails(function () {\n  function F() { /* empty */ }\n  F.prototype.constructor = null;\n  // eslint-disable-next-line es/no-object-getprototypeof -- required for testing\n  return Object.getPrototypeOf(new F()) !== F.prototype;\n});\n","var fails = require('../internals/fails');\n\nmodule.exports = !fails(function () {\n  // eslint-disable-next-line es/no-object-isextensible, es/no-object-preventextensions -- required for testing\n  return Object.isExtensible(Object.preventExtensions({}));\n});\n","var global = require('../internals/global');\nvar isCallable = require('../internals/is-callable');\n\nvar String = global.String;\nvar TypeError = global.TypeError;\n\nmodule.exports = function (argument) {\n  if (typeof argument == 'object' || isCallable(argument)) return argument;\n  throw TypeError(\"Can't set \" + String(argument) + ' as a prototype');\n};\n","'use strict';\nvar $ = require('../internals/export');\nvar global = require('../internals/global');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar isForced = require('../internals/is-forced');\nvar redefine = require('../internals/redefine');\nvar InternalMetadataModule = require('../internals/internal-metadata');\nvar iterate = require('../internals/iterate');\nvar anInstance = require('../internals/an-instance');\nvar isCallable = require('../internals/is-callable');\nvar isObject = require('../internals/is-object');\nvar fails = require('../internals/fails');\nvar checkCorrectnessOfIteration = require('../internals/check-correctness-of-iteration');\nvar setToStringTag = require('../internals/set-to-string-tag');\nvar inheritIfRequired = require('../internals/inherit-if-required');\n\nmodule.exports = function (CONSTRUCTOR_NAME, wrapper, common) {\n  var IS_MAP = CONSTRUCTOR_NAME.indexOf('Map') !== -1;\n  var IS_WEAK = CONSTRUCTOR_NAME.indexOf('Weak') !== -1;\n  var ADDER = IS_MAP ? 'set' : 'add';\n  var NativeConstructor = global[CONSTRUCTOR_NAME];\n  var NativePrototype = NativeConstructor && NativeConstructor.prototype;\n  var Constructor = NativeConstructor;\n  var exported = {};\n\n  var fixMethod = function (KEY) {\n    var uncurriedNativeMethod = uncurryThis(NativePrototype[KEY]);\n    redefine(NativePrototype, KEY,\n      KEY == 'add' ? function add(value) {\n        uncurriedNativeMethod(this, value === 0 ? 0 : value);\n        return this;\n      } : KEY == 'delete' ? function (key) {\n        return IS_WEAK && !isObject(key) ? false : uncurriedNativeMethod(this, key === 0 ? 0 : key);\n      } : KEY == 'get' ? function get(key) {\n        return IS_WEAK && !isObject(key) ? undefined : uncurriedNativeMethod(this, key === 0 ? 0 : key);\n      } : KEY == 'has' ? function has(key) {\n        return IS_WEAK && !isObject(key) ? false : uncurriedNativeMethod(this, key === 0 ? 0 : key);\n      } : function set(key, value) {\n        uncurriedNativeMethod(this, key === 0 ? 0 : key, value);\n        return this;\n      }\n    );\n  };\n\n  var REPLACE = isForced(\n    CONSTRUCTOR_NAME,\n    !isCallable(NativeConstructor) || !(IS_WEAK || NativePrototype.forEach && !fails(function () {\n      new NativeConstructor().entries().next();\n    }))\n  );\n\n  if (REPLACE) {\n    // create collection constructor\n    Constructor = common.getConstructor(wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER);\n    InternalMetadataModule.enable();\n  } else if (isForced(CONSTRUCTOR_NAME, true)) {\n    var instance = new Constructor();\n    // early implementations not supports chaining\n    var HASNT_CHAINING = instance[ADDER](IS_WEAK ? {} : -0, 1) != instance;\n    // V8 ~ Chromium 40- weak-collections throws on primitives, but should return false\n    var THROWS_ON_PRIMITIVES = fails(function () { instance.has(1); });\n    // most early implementations doesn't supports iterables, most modern - not close it correctly\n    // eslint-disable-next-line no-new -- required for testing\n    var ACCEPT_ITERABLES = checkCorrectnessOfIteration(function (iterable) { new NativeConstructor(iterable); });\n    // for early implementations -0 and +0 not the same\n    var BUGGY_ZERO = !IS_WEAK && fails(function () {\n      // V8 ~ Chromium 42- fails only with 5+ elements\n      var $instance = new NativeConstructor();\n      var index = 5;\n      while (index--) $instance[ADDER](index, index);\n      return !$instance.has(-0);\n    });\n\n    if (!ACCEPT_ITERABLES) {\n      Constructor = wrapper(function (dummy, iterable) {\n        anInstance(dummy, NativePrototype);\n        var that = inheritIfRequired(new NativeConstructor(), dummy, Constructor);\n        if (iterable != undefined) iterate(iterable, that[ADDER], { that: that, AS_ENTRIES: IS_MAP });\n        return that;\n      });\n      Constructor.prototype = NativePrototype;\n      NativePrototype.constructor = Constructor;\n    }\n\n    if (THROWS_ON_PRIMITIVES || BUGGY_ZERO) {\n      fixMethod('delete');\n      fixMethod('has');\n      IS_MAP && fixMethod('get');\n    }\n\n    if (BUGGY_ZERO || HASNT_CHAINING) fixMethod(ADDER);\n\n    // weak collections should not contains .clear method\n    if (IS_WEAK && NativePrototype.clear) delete NativePrototype.clear;\n  }\n\n  exported[CONSTRUCTOR_NAME] = Constructor;\n  $({ global: true, forced: Constructor != NativeConstructor }, exported);\n\n  setToStringTag(Constructor, CONSTRUCTOR_NAME);\n\n  if (!IS_WEAK) common.setStrong(Constructor, CONSTRUCTOR_NAME, IS_MAP);\n\n  return Constructor;\n};\n","var classof = require('../internals/classof');\nvar getMethod = require('../internals/get-method');\nvar Iterators = require('../internals/iterators');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar ITERATOR = wellKnownSymbol('iterator');\n\nmodule.exports = function (it) {\n  if (it != undefined) return getMethod(it, ITERATOR)\n    || getMethod(it, '@@iterator')\n    || Iterators[classof(it)];\n};\n","'use strict';\nvar fails = require('../internals/fails');\nvar isCallable = require('../internals/is-callable');\nvar create = require('../internals/object-create');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\nvar redefine = require('../internals/redefine');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar IS_PURE = require('../internals/is-pure');\n\nvar ITERATOR = wellKnownSymbol('iterator');\nvar BUGGY_SAFARI_ITERATORS = false;\n\n// `%IteratorPrototype%` object\n// https://tc39.es/ecma262/#sec-%iteratorprototype%-object\nvar IteratorPrototype, PrototypeOfArrayIteratorPrototype, arrayIterator;\n\n/* eslint-disable es/no-array-prototype-keys -- safe */\nif ([].keys) {\n  arrayIterator = [].keys();\n  // Safari 8 has buggy iterators w/o `next`\n  if (!('next' in arrayIterator)) BUGGY_SAFARI_ITERATORS = true;\n  else {\n    PrototypeOfArrayIteratorPrototype = getPrototypeOf(getPrototypeOf(arrayIterator));\n    if (PrototypeOfArrayIteratorPrototype !== Object.prototype) IteratorPrototype = PrototypeOfArrayIteratorPrototype;\n  }\n}\n\nvar NEW_ITERATOR_PROTOTYPE = IteratorPrototype == undefined || fails(function () {\n  var test = {};\n  // FF44- legacy iterators case\n  return IteratorPrototype[ITERATOR].call(test) !== test;\n});\n\nif (NEW_ITERATOR_PROTOTYPE) IteratorPrototype = {};\nelse if (IS_PURE) IteratorPrototype = create(IteratorPrototype);\n\n// `%IteratorPrototype%[@@iterator]()` method\n// https://tc39.es/ecma262/#sec-%iteratorprototype%-@@iterator\nif (!isCallable(IteratorPrototype[ITERATOR])) {\n  redefine(IteratorPrototype, ITERATOR, function () {\n    return this;\n  });\n}\n\nmodule.exports = {\n  IteratorPrototype: IteratorPrototype,\n  BUGGY_SAFARI_ITERATORS: BUGGY_SAFARI_ITERATORS\n};\n","var arraySpeciesConstructor = require('../internals/array-species-constructor');\n\n// `ArraySpeciesCreate` abstract operation\n// https://tc39.es/ecma262/#sec-arrayspeciescreate\nmodule.exports = function (originalArray, length) {\n  return new (arraySpeciesConstructor(originalArray))(length === 0 ? 0 : length);\n};\n","function webpackEmptyAsyncContext(req) {\n\t// Here Promise.resolve().then() is used instead of new Promise() to prevent\n\t// uncaught exception popping up in devtools\n\treturn Promise.resolve().then(function() {\n\t\tvar e = new Error(\"Cannot find module '\" + req + \"'\");\n\t\te.code = 'MODULE_NOT_FOUND';\n\t\tthrow e;\n\t});\n}\nwebpackEmptyAsyncContext.keys = function() { return []; };\nwebpackEmptyAsyncContext.resolve = webpackEmptyAsyncContext;\nmodule.exports = webpackEmptyAsyncContext;\nwebpackEmptyAsyncContext.id = 127;","function _typeof(obj) { \"@babel/helpers - typeof\"; return _typeof = \"function\" == typeof Symbol && \"symbol\" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && \"function\" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }, _typeof(obj); }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function\"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); Object.defineProperty(subClass, \"prototype\", { writable: false }); if (superClass) _setPrototypeOf(subClass, superClass); }\n\nfunction _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }\n\nfunction _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }\n\nfunction _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === \"object\" || typeof call === \"function\")) { return call; } else if (call !== void 0) { throw new TypeError(\"Derived constructors may only return object or undefined\"); } return _assertThisInitialized(self); }\n\nfunction _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return self; }\n\nfunction _isNativeReflectConstruct() { if (typeof Reflect === \"undefined\" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === \"function\") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }\n\nfunction _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }\n\nfunction _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }\n\nfunction _nonIterableSpread() { throw new TypeError(\"Invalid attempt to spread non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\"); }\n\nfunction _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === \"string\") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === \"Object\" && o.constructor) n = o.constructor.name; if (n === \"Map\" || n === \"Set\") return Array.from(o); if (n === \"Arguments\" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }\n\nfunction _iterableToArray(iter) { if (typeof Symbol !== \"undefined\" && iter[Symbol.iterator] != null || iter[\"@@iterator\"] != null) return Array.from(iter); }\n\nfunction _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }\n\nfunction _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, \"prototype\", { writable: false }); return Constructor; }\n\n/**\n * @license Angular v11.0.2\n * (c) 2010-2020 Google LLC. https://angular.io/\n * License: MIT\n */\nimport { getUrlScheme, syntaxError, Identifiers, JitCompiler, ProviderMeta, I18NHtmlParser, CompilerConfig, CompileReflector, ResourceLoader, JitSummaryResolver, SummaryResolver, Lexer, Parser, HtmlParser, TemplateParser, ElementSchemaRegistry, JitEvaluator, DirectiveNormalizer, UrlResolver, CompileMetadataResolver, NgModuleResolver, DirectiveResolver, PipeResolver, StaticSymbolCache, StyleCompiler, ViewCompiler, NgModuleCompiler, DomElementSchemaRegistry } from '@angular/compiler';\nimport { ɵReflectionCapabilities, ɵstringify, ANALYZE_FOR_ENTRY_COMPONENTS, ElementRef, NgModuleRef, ViewContainerRef, ChangeDetectorRef, Renderer2, QueryList, TemplateRef, ɵCodegenComponentFactoryResolver, ComponentFactoryResolver, ComponentFactory, ComponentRef, NgModuleFactory, ɵcmf, ɵmod, ɵmpd, ɵregisterModuleFactory, Injector, ViewEncapsulation, ChangeDetectionStrategy, SecurityContext, LOCALE_ID, TRANSLATIONS_FORMAT, ɵinlineInterpolate, ɵinterpolate, ɵEMPTY_ARRAY, ɵEMPTY_MAP, ɵvid, ɵeld, ɵand, ɵted, ɵdid, ɵprd, ɵqud, ɵpad, ɵpod, ɵppd, ɵpid, ɵnov, ɵncd, ɵunv, ɵcrt, ɵccf, InjectionToken, PACKAGE_ROOT_URL, Compiler, MissingTranslationStrategy, ɵConsole, Optional, Inject, TRANSLATIONS, isDevMode, createPlatformFactory, platformCore, COMPILER_OPTIONS, CompilerFactory, Injectable, PLATFORM_ID, ɵglobal, Version } from '@angular/core';\nimport { ɵPLATFORM_BROWSER_ID } from '@angular/common';\nimport { ɵINTERNAL_BROWSER_PLATFORM_PROVIDERS } from '@angular/platform-browser';\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar MODULE_SUFFIX = '';\nvar builtinExternalReferences = createBuiltinExternalReferencesMap();\n\nvar JitReflector = /*#__PURE__*/function () {\n  function JitReflector() {\n    _classCallCheck(this, JitReflector);\n\n    this.reflectionCapabilities = new ɵReflectionCapabilities();\n  }\n\n  _createClass(JitReflector, [{\n    key: \"componentModuleUrl\",\n    value: function componentModuleUrl(type, cmpMetadata) {\n      var moduleId = cmpMetadata.moduleId;\n\n      if (typeof moduleId === 'string') {\n        var scheme = getUrlScheme(moduleId);\n        return scheme ? moduleId : \"package:\".concat(moduleId).concat(MODULE_SUFFIX);\n      } else if (moduleId !== null && moduleId !== void 0) {\n        throw syntaxError(\"moduleId should be a string in \\\"\".concat(ɵstringify(type), \"\\\". See https://goo.gl/wIDDiL for more information.\\n\") + \"If you're using Webpack you should inline the template and the styles, see https://goo.gl/X2J8zc.\");\n      }\n\n      return \"./\".concat(ɵstringify(type));\n    }\n  }, {\n    key: \"parameters\",\n    value: function parameters(typeOrFunc) {\n      return this.reflectionCapabilities.parameters(typeOrFunc);\n    }\n  }, {\n    key: \"tryAnnotations\",\n    value: function tryAnnotations(typeOrFunc) {\n      return this.annotations(typeOrFunc);\n    }\n  }, {\n    key: \"annotations\",\n    value: function annotations(typeOrFunc) {\n      return this.reflectionCapabilities.annotations(typeOrFunc);\n    }\n  }, {\n    key: \"shallowAnnotations\",\n    value: function shallowAnnotations(typeOrFunc) {\n      throw new Error('Not supported in JIT mode');\n    }\n  }, {\n    key: \"propMetadata\",\n    value: function propMetadata(typeOrFunc) {\n      return this.reflectionCapabilities.propMetadata(typeOrFunc);\n    }\n  }, {\n    key: \"hasLifecycleHook\",\n    value: function hasLifecycleHook(type, lcProperty) {\n      return this.reflectionCapabilities.hasLifecycleHook(type, lcProperty);\n    }\n  }, {\n    key: \"guards\",\n    value: function guards(type) {\n      return this.reflectionCapabilities.guards(type);\n    }\n  }, {\n    key: \"resolveExternalReference\",\n    value: function resolveExternalReference(ref) {\n      return builtinExternalReferences.get(ref) || ref.runtime;\n    }\n  }]);\n\n  return JitReflector;\n}();\n\nfunction createBuiltinExternalReferencesMap() {\n  var map = new Map();\n  map.set(Identifiers.ANALYZE_FOR_ENTRY_COMPONENTS, ANALYZE_FOR_ENTRY_COMPONENTS);\n  map.set(Identifiers.ElementRef, ElementRef);\n  map.set(Identifiers.NgModuleRef, NgModuleRef);\n  map.set(Identifiers.ViewContainerRef, ViewContainerRef);\n  map.set(Identifiers.ChangeDetectorRef, ChangeDetectorRef);\n  map.set(Identifiers.Renderer2, Renderer2);\n  map.set(Identifiers.QueryList, QueryList);\n  map.set(Identifiers.TemplateRef, TemplateRef);\n  map.set(Identifiers.CodegenComponentFactoryResolver, ɵCodegenComponentFactoryResolver);\n  map.set(Identifiers.ComponentFactoryResolver, ComponentFactoryResolver);\n  map.set(Identifiers.ComponentFactory, ComponentFactory);\n  map.set(Identifiers.ComponentRef, ComponentRef);\n  map.set(Identifiers.NgModuleFactory, NgModuleFactory);\n  map.set(Identifiers.createModuleFactory, ɵcmf);\n  map.set(Identifiers.moduleDef, ɵmod);\n  map.set(Identifiers.moduleProviderDef, ɵmpd);\n  map.set(Identifiers.RegisterModuleFactoryFn, ɵregisterModuleFactory);\n  map.set(Identifiers.Injector, Injector);\n  map.set(Identifiers.ViewEncapsulation, ViewEncapsulation);\n  map.set(Identifiers.ChangeDetectionStrategy, ChangeDetectionStrategy);\n  map.set(Identifiers.SecurityContext, SecurityContext);\n  map.set(Identifiers.LOCALE_ID, LOCALE_ID);\n  map.set(Identifiers.TRANSLATIONS_FORMAT, TRANSLATIONS_FORMAT);\n  map.set(Identifiers.inlineInterpolate, ɵinlineInterpolate);\n  map.set(Identifiers.interpolate, ɵinterpolate);\n  map.set(Identifiers.EMPTY_ARRAY, ɵEMPTY_ARRAY);\n  map.set(Identifiers.EMPTY_MAP, ɵEMPTY_MAP);\n  map.set(Identifiers.viewDef, ɵvid);\n  map.set(Identifiers.elementDef, ɵeld);\n  map.set(Identifiers.anchorDef, ɵand);\n  map.set(Identifiers.textDef, ɵted);\n  map.set(Identifiers.directiveDef, ɵdid);\n  map.set(Identifiers.providerDef, ɵprd);\n  map.set(Identifiers.queryDef, ɵqud);\n  map.set(Identifiers.pureArrayDef, ɵpad);\n  map.set(Identifiers.pureObjectDef, ɵpod);\n  map.set(Identifiers.purePipeDef, ɵppd);\n  map.set(Identifiers.pipeDef, ɵpid);\n  map.set(Identifiers.nodeValue, ɵnov);\n  map.set(Identifiers.ngContentDef, ɵncd);\n  map.set(Identifiers.unwrapValue, ɵunv);\n  map.set(Identifiers.createRendererType2, ɵcrt);\n  map.set(Identifiers.createComponentFactory, ɵccf);\n  return map;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ERROR_COLLECTOR_TOKEN = new InjectionToken('ErrorCollector');\n/**\n * A default provider for {@link PACKAGE_ROOT_URL} that maps to '/'.\n */\n\nvar DEFAULT_PACKAGE_URL_PROVIDER = {\n  provide: PACKAGE_ROOT_URL,\n  useValue: '/'\n};\nvar _NO_RESOURCE_LOADER = {\n  get: function get(url) {\n    throw new Error(\"No ResourceLoader implementation has been provided. Can't read the url \\\"\".concat(url, \"\\\"\"));\n  }\n};\nvar baseHtmlParser = new InjectionToken('HtmlParser');\n\nvar CompilerImpl = /*#__PURE__*/function () {\n  function CompilerImpl(injector, _metadataResolver, templateParser, styleCompiler, viewCompiler, ngModuleCompiler, summaryResolver, compileReflector, jitEvaluator, compilerConfig, console) {\n    _classCallCheck(this, CompilerImpl);\n\n    this._metadataResolver = _metadataResolver;\n    this._delegate = new JitCompiler(_metadataResolver, templateParser, styleCompiler, viewCompiler, ngModuleCompiler, summaryResolver, compileReflector, jitEvaluator, compilerConfig, console, this.getExtraNgModuleProviders.bind(this));\n    this.injector = injector;\n  }\n\n  _createClass(CompilerImpl, [{\n    key: \"getExtraNgModuleProviders\",\n    value: function getExtraNgModuleProviders() {\n      return [this._metadataResolver.getProviderMetadata(new ProviderMeta(Compiler, {\n        useValue: this\n      }))];\n    }\n  }, {\n    key: \"compileModuleSync\",\n    value: function compileModuleSync(moduleType) {\n      return this._delegate.compileModuleSync(moduleType);\n    }\n  }, {\n    key: \"compileModuleAsync\",\n    value: function compileModuleAsync(moduleType) {\n      return this._delegate.compileModuleAsync(moduleType);\n    }\n  }, {\n    key: \"compileModuleAndAllComponentsSync\",\n    value: function compileModuleAndAllComponentsSync(moduleType) {\n      var result = this._delegate.compileModuleAndAllComponentsSync(moduleType);\n\n      return {\n        ngModuleFactory: result.ngModuleFactory,\n        componentFactories: result.componentFactories\n      };\n    }\n  }, {\n    key: \"compileModuleAndAllComponentsAsync\",\n    value: function compileModuleAndAllComponentsAsync(moduleType) {\n      return this._delegate.compileModuleAndAllComponentsAsync(moduleType).then(function (result) {\n        return {\n          ngModuleFactory: result.ngModuleFactory,\n          componentFactories: result.componentFactories\n        };\n      });\n    }\n  }, {\n    key: \"loadAotSummaries\",\n    value: function loadAotSummaries(summaries) {\n      this._delegate.loadAotSummaries(summaries);\n    }\n  }, {\n    key: \"hasAotSummary\",\n    value: function hasAotSummary(ref) {\n      return this._delegate.hasAotSummary(ref);\n    }\n  }, {\n    key: \"getComponentFactory\",\n    value: function getComponentFactory(component) {\n      return this._delegate.getComponentFactory(component);\n    }\n  }, {\n    key: \"clearCache\",\n    value: function clearCache() {\n      this._delegate.clearCache();\n    }\n  }, {\n    key: \"clearCacheFor\",\n    value: function clearCacheFor(type) {\n      this._delegate.clearCacheFor(type);\n    }\n  }, {\n    key: \"getModuleId\",\n    value: function getModuleId(moduleType) {\n      var meta = this._metadataResolver.getNgModuleMetadata(moduleType);\n\n      return meta && meta.id || undefined;\n    }\n  }]);\n\n  return CompilerImpl;\n}();\n\nvar ɵ0 = new JitReflector(),\n    ɵ1 = _NO_RESOURCE_LOADER,\n    ɵ2 = function ɵ2(parser, translations, format, config, console) {\n  translations = translations || '';\n  var missingTranslation = translations ? config.missingTranslation : MissingTranslationStrategy.Ignore;\n  return new I18NHtmlParser(parser, translations, format, missingTranslation, console);\n},\n    ɵ3 = new CompilerConfig();\n/**\n * A set of providers that provide `JitCompiler` and its dependencies to use for\n * template compilation.\n */\n\n\nvar COMPILER_PROVIDERS__PRE_R3__ = [{\n  provide: CompileReflector,\n  useValue: ɵ0\n}, {\n  provide: ResourceLoader,\n  useValue: ɵ1\n}, {\n  provide: JitSummaryResolver,\n  deps: []\n}, {\n  provide: SummaryResolver,\n  useExisting: JitSummaryResolver\n}, {\n  provide: ɵConsole,\n  deps: []\n}, {\n  provide: Lexer,\n  deps: []\n}, {\n  provide: Parser,\n  deps: [Lexer]\n}, {\n  provide: baseHtmlParser,\n  useClass: HtmlParser,\n  deps: []\n}, {\n  provide: I18NHtmlParser,\n  useFactory: ɵ2,\n  deps: [baseHtmlParser, [new Optional(), new Inject(TRANSLATIONS)], [new Optional(), new Inject(TRANSLATIONS_FORMAT)], [CompilerConfig], [ɵConsole]]\n}, {\n  provide: HtmlParser,\n  useExisting: I18NHtmlParser\n}, {\n  provide: TemplateParser,\n  deps: [CompilerConfig, CompileReflector, Parser, ElementSchemaRegistry, I18NHtmlParser, ɵConsole]\n}, {\n  provide: JitEvaluator,\n  useClass: JitEvaluator,\n  deps: []\n}, {\n  provide: DirectiveNormalizer,\n  deps: [ResourceLoader, UrlResolver, HtmlParser, CompilerConfig]\n}, {\n  provide: CompileMetadataResolver,\n  deps: [CompilerConfig, HtmlParser, NgModuleResolver, DirectiveResolver, PipeResolver, SummaryResolver, ElementSchemaRegistry, DirectiveNormalizer, ɵConsole, [Optional, StaticSymbolCache], CompileReflector, [Optional, ERROR_COLLECTOR_TOKEN]]\n}, DEFAULT_PACKAGE_URL_PROVIDER, {\n  provide: StyleCompiler,\n  deps: [UrlResolver]\n}, {\n  provide: ViewCompiler,\n  deps: [CompileReflector]\n}, {\n  provide: NgModuleCompiler,\n  deps: [CompileReflector]\n}, {\n  provide: CompilerConfig,\n  useValue: ɵ3\n}, {\n  provide: Compiler,\n  useClass: CompilerImpl,\n  deps: [Injector, CompileMetadataResolver, TemplateParser, StyleCompiler, ViewCompiler, NgModuleCompiler, SummaryResolver, CompileReflector, JitEvaluator, CompilerConfig, ɵConsole]\n}, {\n  provide: DomElementSchemaRegistry,\n  deps: []\n}, {\n  provide: ElementSchemaRegistry,\n  useExisting: DomElementSchemaRegistry\n}, {\n  provide: UrlResolver,\n  deps: [PACKAGE_ROOT_URL]\n}, {\n  provide: DirectiveResolver,\n  deps: [CompileReflector]\n}, {\n  provide: PipeResolver,\n  deps: [CompileReflector]\n}, {\n  provide: NgModuleResolver,\n  deps: [CompileReflector]\n}];\nvar COMPILER_PROVIDERS__POST_R3__ = [{\n  provide: Compiler,\n  useFactory: function useFactory() {\n    return new Compiler();\n  }\n}];\nvar COMPILER_PROVIDERS = COMPILER_PROVIDERS__PRE_R3__;\n/**\n * @publicApi\n */\n\nvar JitCompilerFactory = /*#__PURE__*/function () {\n  /* @internal */\n  function JitCompilerFactory(defaultOptions) {\n    _classCallCheck(this, JitCompilerFactory);\n\n    var compilerOptions = {\n      useJit: true,\n      defaultEncapsulation: ViewEncapsulation.Emulated,\n      missingTranslation: MissingTranslationStrategy.Warning\n    };\n    this._defaultOptions = [compilerOptions].concat(_toConsumableArray(defaultOptions));\n  }\n\n  _createClass(JitCompilerFactory, [{\n    key: \"createCompiler\",\n    value: function createCompiler() {\n      var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];\n\n      var opts = _mergeOptions(this._defaultOptions.concat(options));\n\n      var injector = Injector.create([COMPILER_PROVIDERS, {\n        provide: CompilerConfig,\n        useFactory: function useFactory() {\n          return new CompilerConfig({\n            // let explicit values from the compiler options overwrite options\n            // from the app providers\n            useJit: opts.useJit,\n            jitDevMode: isDevMode(),\n            // let explicit values from the compiler options overwrite options\n            // from the app providers\n            defaultEncapsulation: opts.defaultEncapsulation,\n            missingTranslation: opts.missingTranslation,\n            preserveWhitespaces: opts.preserveWhitespaces\n          });\n        },\n        deps: []\n      }, opts.providers]);\n      return injector.get(Compiler);\n    }\n  }]);\n\n  return JitCompilerFactory;\n}();\n\nfunction _mergeOptions(optionsArr) {\n  return {\n    useJit: _lastDefined(optionsArr.map(function (options) {\n      return options.useJit;\n    })),\n    defaultEncapsulation: _lastDefined(optionsArr.map(function (options) {\n      return options.defaultEncapsulation;\n    })),\n    providers: _mergeArrays(optionsArr.map(function (options) {\n      return options.providers;\n    })),\n    missingTranslation: _lastDefined(optionsArr.map(function (options) {\n      return options.missingTranslation;\n    })),\n    preserveWhitespaces: _lastDefined(optionsArr.map(function (options) {\n      return options.preserveWhitespaces;\n    }))\n  };\n}\n\nfunction _lastDefined(args) {\n  for (var i = args.length - 1; i >= 0; i--) {\n    if (args[i] !== undefined) {\n      return args[i];\n    }\n  }\n\n  return undefined;\n}\n\nfunction _mergeArrays(parts) {\n  var result = [];\n  parts.forEach(function (part) {\n    return part && result.push.apply(result, _toConsumableArray(part));\n  });\n  return result;\n}\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nvar ɵ0$1 = {};\n/**\n * A platform that included corePlatform and the compiler.\n *\n * @publicApi\n */\n\nvar platformCoreDynamic = createPlatformFactory(platformCore, 'coreDynamic', [{\n  provide: COMPILER_OPTIONS,\n  useValue: ɵ0$1,\n  multi: true\n}, {\n  provide: CompilerFactory,\n  useClass: JitCompilerFactory,\n  deps: [COMPILER_OPTIONS]\n}]);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar ResourceLoaderImpl = /*#__PURE__*/function (_ResourceLoader) {\n  _inherits(ResourceLoaderImpl, _ResourceLoader);\n\n  var _super = _createSuper(ResourceLoaderImpl);\n\n  function ResourceLoaderImpl() {\n    _classCallCheck(this, ResourceLoaderImpl);\n\n    return _super.apply(this, arguments);\n  }\n\n  _createClass(ResourceLoaderImpl, [{\n    key: \"get\",\n    value: function get(url) {\n      var resolve;\n      var reject;\n      var promise = new Promise(function (res, rej) {\n        resolve = res;\n        reject = rej;\n      });\n      var xhr = new XMLHttpRequest();\n      xhr.open('GET', url, true);\n      xhr.responseType = 'text';\n\n      xhr.onload = function () {\n        // responseText is the old-school way of retrieving response (supported by IE8 & 9)\n        // response/responseType properties were introduced in ResourceLoader Level2 spec (supported\n        // by IE10)\n        var response = xhr.response || xhr.responseText; // normalize IE9 bug (http://bugs.jquery.com/ticket/1450)\n\n        var status = xhr.status === 1223 ? 204 : xhr.status; // fix status code when it is 0 (0 status is undocumented).\n        // Occurs when accessing file resources or on Android 4.1 stock browser\n        // while retrieving files from application cache.\n\n        if (status === 0) {\n          status = response ? 200 : 0;\n        }\n\n        if (200 <= status && status <= 300) {\n          resolve(response);\n        } else {\n          reject(\"Failed to load \".concat(url));\n        }\n      };\n\n      xhr.onerror = function () {\n        reject(\"Failed to load \".concat(url));\n      };\n\n      xhr.send();\n      return promise;\n    }\n  }]);\n\n  return ResourceLoaderImpl;\n}(ResourceLoader);\n\nResourceLoaderImpl.decorators = [{\n  type: Injectable\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nvar ɵ0$2 = {\n  providers: [{\n    provide: ResourceLoader,\n    useClass: ResourceLoaderImpl,\n    deps: []\n  }]\n},\n    ɵ1$1 = ɵPLATFORM_BROWSER_ID;\n/**\n * @publicApi\n */\n\nvar INTERNAL_BROWSER_DYNAMIC_PLATFORM_PROVIDERS = [ɵINTERNAL_BROWSER_PLATFORM_PROVIDERS, {\n  provide: COMPILER_OPTIONS,\n  useValue: ɵ0$2,\n  multi: true\n}, {\n  provide: PLATFORM_ID,\n  useValue: ɵ1$1\n}];\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * An implementation of ResourceLoader that uses a template cache to avoid doing an actual\n * ResourceLoader.\n *\n * The template cache needs to be built and loaded into window.$templateCache\n * via a separate mechanism.\n *\n * @publicApi\n */\n\nvar CachedResourceLoader = /*#__PURE__*/function (_ResourceLoader2) {\n  _inherits(CachedResourceLoader, _ResourceLoader2);\n\n  var _super2 = _createSuper(CachedResourceLoader);\n\n  function CachedResourceLoader() {\n    var _this;\n\n    _classCallCheck(this, CachedResourceLoader);\n\n    _this = _super2.call(this);\n    _this._cache = ɵglobal.$templateCache;\n\n    if (_this._cache == null) {\n      throw new Error('CachedResourceLoader: Template cache was not found in $templateCache.');\n    }\n\n    return _this;\n  }\n\n  _createClass(CachedResourceLoader, [{\n    key: \"get\",\n    value: function get(url) {\n      if (this._cache.hasOwnProperty(url)) {\n        return Promise.resolve(this._cache[url]);\n      } else {\n        return Promise.reject('CachedResourceLoader: Did not find cached template for ' + url);\n      }\n    }\n  }]);\n\n  return CachedResourceLoader;\n}(ResourceLoader);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @publicApi\n */\n\n\nvar VERSION = new Version('11.0.2');\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @publicApi\n */\n\nvar RESOURCE_CACHE_PROVIDER = [{\n  provide: ResourceLoader,\n  useClass: CachedResourceLoader,\n  deps: []\n}];\n/**\n * @publicApi\n */\n\nvar platformBrowserDynamic = createPlatformFactory(platformCoreDynamic, 'browserDynamic', INTERNAL_BROWSER_DYNAMIC_PLATFORM_PROVIDERS);\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// This file only reexports content of the `src` folder. Keep it that way.\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { JitCompilerFactory, RESOURCE_CACHE_PROVIDER, VERSION, platformBrowserDynamic, COMPILER_PROVIDERS__POST_R3__ as ɵCOMPILER_PROVIDERS__POST_R3__, CompilerImpl as ɵCompilerImpl, INTERNAL_BROWSER_DYNAMIC_PLATFORM_PROVIDERS as ɵINTERNAL_BROWSER_DYNAMIC_PLATFORM_PROVIDERS, ResourceLoaderImpl as ɵResourceLoaderImpl, CachedResourceLoader as ɵangular_packages_platform_browser_dynamic_platform_browser_dynamic_a, platformCoreDynamic as ɵplatformCoreDynamic };","/** PURE_IMPORTS_START _util_isScheduler,_fromArray,_scheduled_scheduleArray PURE_IMPORTS_END */\nimport { isScheduler } from '../util/isScheduler';\nimport { fromArray } from './fromArray';\nimport { scheduleArray } from '../scheduled/scheduleArray';\nexport function of() {\n  var args = [];\n\n  for (var _i = 0; _i < arguments.length; _i++) {\n    args[_i] = arguments[_i];\n  }\n\n  var scheduler = args[args.length - 1];\n\n  if (isScheduler(scheduler)) {\n    args.pop();\n    return scheduleArray(args, scheduler);\n  } else {\n    return fromArray(args);\n  }\n}","var TO_STRING_TAG_SUPPORT = require('../internals/to-string-tag-support');\nvar redefine = require('../internals/redefine');\nvar toString = require('../internals/object-to-string');\n\n// `Object.prototype.toString` method\n// https://tc39.es/ecma262/#sec-object.prototype.tostring\nif (!TO_STRING_TAG_SUPPORT) {\n  redefine(Object.prototype, 'toString', toString, { unsafe: true });\n}\n","var global = require('../internals/global');\nvar userAgent = require('../internals/engine-user-agent');\n\nvar process = global.process;\nvar Deno = global.Deno;\nvar versions = process && process.versions || Deno && Deno.version;\nvar v8 = versions && versions.v8;\nvar match, version;\n\nif (v8) {\n  match = v8.split('.');\n  // in old Chrome, versions of V8 isn't V8 = Chrome / 10\n  // but their correct versions are not interesting for us\n  version = match[0] > 0 && match[0] < 4 ? 1 : +(match[0] + match[1]);\n}\n\n// BrowserFS NodeJS `process` polyfill incorrectly set `.v8` to `0.0`\n// so check `userAgent` even if `.v8` exists, but 0\nif (!version && userAgent) {\n  match = userAgent.match(/Edge\\/(\\d+)/);\n  if (!match || match[1] >= 74) {\n    match = userAgent.match(/Chrome\\/(\\d+)/);\n    if (match) version = +match[1];\n  }\n}\n\nmodule.exports = version;\n","var getBuiltIn = require('../internals/get-built-in');\n\nmodule.exports = getBuiltIn('navigator', 'userAgent') || '';\n","var global = require('../internals/global');\nvar call = require('../internals/function-call');\nvar isObject = require('../internals/is-object');\nvar isSymbol = require('../internals/is-symbol');\nvar getMethod = require('../internals/get-method');\nvar ordinaryToPrimitive = require('../internals/ordinary-to-primitive');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar TypeError = global.TypeError;\nvar TO_PRIMITIVE = wellKnownSymbol('toPrimitive');\n\n// `ToPrimitive` abstract operation\n// https://tc39.es/ecma262/#sec-toprimitive\nmodule.exports = function (input, pref) {\n  if (!isObject(input) || isSymbol(input)) return input;\n  var exoticToPrim = getMethod(input, TO_PRIMITIVE);\n  var result;\n  if (exoticToPrim) {\n    if (pref === undefined) pref = 'default';\n    result = call(exoticToPrim, input, pref);\n    if (!isObject(result) || isSymbol(result)) return result;\n    throw TypeError(\"Can't convert object to primitive value\");\n  }\n  if (pref === undefined) pref = 'number';\n  return ordinaryToPrimitive(input, pref);\n};\n","var global = require('../internals/global');\nvar call = require('../internals/function-call');\nvar isCallable = require('../internals/is-callable');\nvar isObject = require('../internals/is-object');\n\nvar TypeError = global.TypeError;\n\n// `OrdinaryToPrimitive` abstract operation\n// https://tc39.es/ecma262/#sec-ordinarytoprimitive\nmodule.exports = function (input, pref) {\n  var fn, val;\n  if (pref === 'string' && isCallable(fn = input.toString) && !isObject(val = call(fn, input))) return val;\n  if (isCallable(fn = input.valueOf) && !isObject(val = call(fn, input))) return val;\n  if (pref !== 'string' && isCallable(fn = input.toString) && !isObject(val = call(fn, input))) return val;\n  throw TypeError(\"Can't convert object to primitive value\");\n};\n","'use strict';\nvar TO_STRING_TAG_SUPPORT = require('../internals/to-string-tag-support');\nvar classof = require('../internals/classof');\n\n// `Object.prototype.toString` method implementation\n// https://tc39.es/ecma262/#sec-object.prototype.tostring\nmodule.exports = TO_STRING_TAG_SUPPORT ? {}.toString : function toString() {\n  return '[object ' + classof(this) + ']';\n};\n","var $ = require('../internals/export');\nvar functionApply = require('../internals/function-apply');\nvar aCallable = require('../internals/a-callable');\nvar anObject = require('../internals/an-object');\nvar fails = require('../internals/fails');\n\n// MS Edge argumentsList argument is optional\nvar OPTIONAL_ARGUMENTS_LIST = !fails(function () {\n  // eslint-disable-next-line es/no-reflect -- required for testing\n  Reflect.apply(function () { /* empty */ });\n});\n\n// `Reflect.apply` method\n// https://tc39.es/ecma262/#sec-reflect.apply\n$({ target: 'Reflect', stat: true, forced: OPTIONAL_ARGUMENTS_LIST }, {\n  apply: function apply(target, thisArgument, argumentsList) {\n    return functionApply(aCallable(target), thisArgument, anObject(argumentsList));\n  }\n});\n","'use strict';\nvar $propertyIsEnumerable = {}.propertyIsEnumerable;\n// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe\nvar getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\n\n// Nashorn ~ JDK8 bug\nvar NASHORN_BUG = getOwnPropertyDescriptor && !$propertyIsEnumerable.call({ 1: 2 }, 1);\n\n// `Object.prototype.propertyIsEnumerable` method implementation\n// https://tc39.es/ecma262/#sec-object.prototype.propertyisenumerable\nexports.f = NASHORN_BUG ? function propertyIsEnumerable(V) {\n  var descriptor = getOwnPropertyDescriptor(this, V);\n  return !!descriptor && descriptor.enumerable;\n} : $propertyIsEnumerable;\n","var hasOwn = require('../internals/has-own-property');\nvar ownKeys = require('../internals/own-keys');\nvar getOwnPropertyDescriptorModule = require('../internals/object-get-own-property-descriptor');\nvar definePropertyModule = require('../internals/object-define-property');\n\nmodule.exports = function (target, source, exceptions) {\n  var keys = ownKeys(source);\n  var defineProperty = definePropertyModule.f;\n  var getOwnPropertyDescriptor = getOwnPropertyDescriptorModule.f;\n  for (var i = 0; i < keys.length; i++) {\n    var key = keys[i];\n    if (!hasOwn(target, key) && !(exceptions && hasOwn(exceptions, key))) {\n      defineProperty(target, key, getOwnPropertyDescriptor(source, key));\n    }\n  }\n};\n","var toIndexedObject = require('../internals/to-indexed-object');\nvar toAbsoluteIndex = require('../internals/to-absolute-index');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\n\n// `Array.prototype.{ indexOf, includes }` methods implementation\nvar createMethod = function (IS_INCLUDES) {\n  return function ($this, el, fromIndex) {\n    var O = toIndexedObject($this);\n    var length = lengthOfArrayLike(O);\n    var index = toAbsoluteIndex(fromIndex, length);\n    var value;\n    // Array#includes uses SameValueZero equality algorithm\n    // eslint-disable-next-line no-self-compare -- NaN check\n    if (IS_INCLUDES && el != el) while (length > index) {\n      value = O[index++];\n      // eslint-disable-next-line no-self-compare -- NaN check\n      if (value != value) return true;\n    // Array#indexOf ignores holes, Array#includes - not\n    } else for (;length > index; index++) {\n      if ((IS_INCLUDES || index in O) && O[index] === el) return IS_INCLUDES || index || 0;\n    } return !IS_INCLUDES && -1;\n  };\n};\n\nmodule.exports = {\n  // `Array.prototype.includes` method\n  // https://tc39.es/ecma262/#sec-array.prototype.includes\n  includes: createMethod(true),\n  // `Array.prototype.indexOf` method\n  // https://tc39.es/ecma262/#sec-array.prototype.indexof\n  indexOf: createMethod(false)\n};\n","var toIntegerOrInfinity = require('../internals/to-integer-or-infinity');\n\nvar min = Math.min;\n\n// `ToLength` abstract operation\n// https://tc39.es/ecma262/#sec-tolength\nmodule.exports = function (argument) {\n  return argument > 0 ? min(toIntegerOrInfinity(argument), 0x1FFFFFFFFFFFFF) : 0; // 2 ** 53 - 1 == 9007199254740991\n};\n","// eslint-disable-next-line es/no-object-getownpropertysymbols -- safe\nexports.f = Object.getOwnPropertySymbols;\n","var $ = require('../internals/export');\nvar getBuiltIn = require('../internals/get-built-in');\nvar apply = require('../internals/function-apply');\nvar bind = require('../internals/function-bind');\nvar aConstructor = require('../internals/a-constructor');\nvar anObject = require('../internals/an-object');\nvar isObject = require('../internals/is-object');\nvar create = require('../internals/object-create');\nvar fails = require('../internals/fails');\n\nvar nativeConstruct = getBuiltIn('Reflect', 'construct');\nvar ObjectPrototype = Object.prototype;\nvar push = [].push;\n\n// `Reflect.construct` method\n// https://tc39.es/ecma262/#sec-reflect.construct\n// MS Edge supports only 2 arguments and argumentsList argument is optional\n// FF Nightly sets third argument as `new.target`, but does not create `this` from it\nvar NEW_TARGET_BUG = fails(function () {\n  function F() { /* empty */ }\n  return !(nativeConstruct(function () { /* empty */ }, [], F) instanceof F);\n});\n\nvar ARGS_BUG = !fails(function () {\n  nativeConstruct(function () { /* empty */ });\n});\n\nvar FORCED = NEW_TARGET_BUG || ARGS_BUG;\n\n$({ target: 'Reflect', stat: true, forced: FORCED, sham: FORCED }, {\n  construct: function construct(Target, args /* , newTarget */) {\n    aConstructor(Target);\n    anObject(args);\n    var newTarget = arguments.length < 3 ? Target : aConstructor(arguments[2]);\n    if (ARGS_BUG && !NEW_TARGET_BUG) return nativeConstruct(Target, args, newTarget);\n    if (Target == newTarget) {\n      // w/o altered newTarget, optimization for 0-4 arguments\n      switch (args.length) {\n        case 0: return new Target();\n        case 1: return new Target(args[0]);\n        case 2: return new Target(args[0], args[1]);\n        case 3: return new Target(args[0], args[1], args[2]);\n        case 4: return new Target(args[0], args[1], args[2], args[3]);\n      }\n      // w/o altered newTarget, lot of arguments case\n      var $args = [null];\n      apply(push, $args, args);\n      return new (apply(bind, Target, $args))();\n    }\n    // with altered newTarget, not support built-in constructors\n    var proto = newTarget.prototype;\n    var instance = create(isObject(proto) ? proto : ObjectPrototype);\n    var result = apply(Target, instance, args);\n    return isObject(result) ? result : instance;\n  }\n});\n","'use strict';\nvar global = require('../internals/global');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar aCallable = require('../internals/a-callable');\nvar isObject = require('../internals/is-object');\nvar hasOwn = require('../internals/has-own-property');\nvar arraySlice = require('../internals/array-slice');\nvar NATIVE_BIND = require('../internals/function-bind-native');\n\nvar Function = global.Function;\nvar concat = uncurryThis([].concat);\nvar join = uncurryThis([].join);\nvar factories = {};\n\nvar construct = function (C, argsLength, args) {\n  if (!hasOwn(factories, argsLength)) {\n    for (var list = [], i = 0; i < argsLength; i++) list[i] = 'a[' + i + ']';\n    factories[argsLength] = Function('C,a', 'return new C(' + join(list, ',') + ')');\n  } return factories[argsLength](C, args);\n};\n\n// `Function.prototype.bind` method implementation\n// https://tc39.es/ecma262/#sec-function.prototype.bind\nmodule.exports = NATIVE_BIND ? Function.bind : function bind(that /* , ...args */) {\n  var F = aCallable(this);\n  var Prototype = F.prototype;\n  var partArgs = arraySlice(arguments, 1);\n  var boundFunction = function bound(/* args... */) {\n    var args = concat(partArgs, arraySlice(arguments));\n    return this instanceof boundFunction ? construct(F, args.length, args) : F.apply(that, args);\n  };\n  if (isObject(Prototype)) boundFunction.prototype = Prototype;\n  return boundFunction;\n};\n","var uncurryThis = require('../internals/function-uncurry-this');\n\nmodule.exports = uncurryThis([].slice);\n","var global = require('../internals/global');\nvar isConstructor = require('../internals/is-constructor');\nvar tryToString = require('../internals/try-to-string');\n\nvar TypeError = global.TypeError;\n\n// `Assert: IsConstructor(argument) is true`\nmodule.exports = function (argument) {\n  if (isConstructor(argument)) return argument;\n  throw TypeError(tryToString(argument) + ' is not a constructor');\n};\n","var DESCRIPTORS = require('../internals/descriptors');\nvar V8_PROTOTYPE_DEFINE_BUG = require('../internals/v8-prototype-define-bug');\nvar definePropertyModule = require('../internals/object-define-property');\nvar anObject = require('../internals/an-object');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar objectKeys = require('../internals/object-keys');\n\n// `Object.defineProperties` method\n// https://tc39.es/ecma262/#sec-object.defineproperties\n// eslint-disable-next-line es/no-object-defineproperties -- safe\nexports.f = DESCRIPTORS && !V8_PROTOTYPE_DEFINE_BUG ? Object.defineProperties : function defineProperties(O, Properties) {\n  anObject(O);\n  var props = toIndexedObject(Properties);\n  var keys = objectKeys(Properties);\n  var length = keys.length;\n  var index = 0;\n  var key;\n  while (length > index) definePropertyModule.f(O, key = keys[index++], props[key]);\n  return O;\n};\n","var internalObjectKeys = require('../internals/object-keys-internal');\nvar enumBugKeys = require('../internals/enum-bug-keys');\n\n// `Object.keys` method\n// https://tc39.es/ecma262/#sec-object.keys\n// eslint-disable-next-line es/no-object-keys -- safe\nmodule.exports = Object.keys || function keys(O) {\n  return internalObjectKeys(O, enumBugKeys);\n};\n","var getBuiltIn = require('../internals/get-built-in');\n\nmodule.exports = getBuiltIn('document', 'documentElement');\n","var $ = require('../internals/export');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar anObject = require('../internals/an-object');\nvar toPropertyKey = require('../internals/to-property-key');\nvar definePropertyModule = require('../internals/object-define-property');\nvar fails = require('../internals/fails');\n\n// MS Edge has broken Reflect.defineProperty - throwing instead of returning false\nvar ERROR_INSTEAD_OF_FALSE = fails(function () {\n  // eslint-disable-next-line es/no-reflect -- required for testing\n  Reflect.defineProperty(definePropertyModule.f({}, 1, { value: 1 }), 1, { value: 2 });\n});\n\n// `Reflect.defineProperty` method\n// https://tc39.es/ecma262/#sec-reflect.defineproperty\n$({ target: 'Reflect', stat: true, forced: ERROR_INSTEAD_OF_FALSE, sham: !DESCRIPTORS }, {\n  defineProperty: function defineProperty(target, propertyKey, attributes) {\n    anObject(target);\n    var key = toPropertyKey(propertyKey);\n    anObject(attributes);\n    try {\n      definePropertyModule.f(target, key, attributes);\n      return true;\n    } catch (error) {\n      return false;\n    }\n  }\n});\n","var $ = require('../internals/export');\nvar anObject = require('../internals/an-object');\nvar getOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;\n\n// `Reflect.deleteProperty` method\n// https://tc39.es/ecma262/#sec-reflect.deleteproperty\n$({ target: 'Reflect', stat: true }, {\n  deleteProperty: function deleteProperty(target, propertyKey) {\n    var descriptor = getOwnPropertyDescriptor(anObject(target), propertyKey);\n    return descriptor && !descriptor.configurable ? false : delete target[propertyKey];\n  }\n});\n","var $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar isObject = require('../internals/is-object');\nvar anObject = require('../internals/an-object');\nvar isDataDescriptor = require('../internals/is-data-descriptor');\nvar getOwnPropertyDescriptorModule = require('../internals/object-get-own-property-descriptor');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\n\n// `Reflect.get` method\n// https://tc39.es/ecma262/#sec-reflect.get\nfunction get(target, propertyKey /* , receiver */) {\n  var receiver = arguments.length < 3 ? target : arguments[2];\n  var descriptor, prototype;\n  if (anObject(target) === receiver) return target[propertyKey];\n  descriptor = getOwnPropertyDescriptorModule.f(target, propertyKey);\n  if (descriptor) return isDataDescriptor(descriptor)\n    ? descriptor.value\n    : descriptor.get === undefined ? undefined : call(descriptor.get, receiver);\n  if (isObject(prototype = getPrototypeOf(target))) return get(prototype, propertyKey, receiver);\n}\n\n$({ target: 'Reflect', stat: true }, {\n  get: get\n});\n","var $ = require('../internals/export');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar anObject = require('../internals/an-object');\nvar getOwnPropertyDescriptorModule = require('../internals/object-get-own-property-descriptor');\n\n// `Reflect.getOwnPropertyDescriptor` method\n// https://tc39.es/ecma262/#sec-reflect.getownpropertydescriptor\n$({ target: 'Reflect', stat: true, sham: !DESCRIPTORS }, {\n  getOwnPropertyDescriptor: function getOwnPropertyDescriptor(target, propertyKey) {\n    return getOwnPropertyDescriptorModule.f(anObject(target), propertyKey);\n  }\n});\n","var $ = require('../internals/export');\nvar anObject = require('../internals/an-object');\nvar objectGetPrototypeOf = require('../internals/object-get-prototype-of');\nvar CORRECT_PROTOTYPE_GETTER = require('../internals/correct-prototype-getter');\n\n// `Reflect.getPrototypeOf` method\n// https://tc39.es/ecma262/#sec-reflect.getprototypeof\n$({ target: 'Reflect', stat: true, sham: !CORRECT_PROTOTYPE_GETTER }, {\n  getPrototypeOf: function getPrototypeOf(target) {\n    return objectGetPrototypeOf(anObject(target));\n  }\n});\n","var $ = require('../internals/export');\n\n// `Reflect.has` method\n// https://tc39.es/ecma262/#sec-reflect.has\n$({ target: 'Reflect', stat: true }, {\n  has: function has(target, propertyKey) {\n    return propertyKey in target;\n  }\n});\n","var $ = require('../internals/export');\nvar anObject = require('../internals/an-object');\nvar $isExtensible = require('../internals/object-is-extensible');\n\n// `Reflect.isExtensible` method\n// https://tc39.es/ecma262/#sec-reflect.isextensible\n$({ target: 'Reflect', stat: true }, {\n  isExtensible: function isExtensible(target) {\n    anObject(target);\n    return $isExtensible(target);\n  }\n});\n","// FF26- bug: ArrayBuffers are non-extensible, but Object.isExtensible does not report it\nvar fails = require('../internals/fails');\n\nmodule.exports = fails(function () {\n  if (typeof ArrayBuffer == 'function') {\n    var buffer = new ArrayBuffer(8);\n    // eslint-disable-next-line es/no-object-isextensible, es/no-object-defineproperty -- safe\n    if (Object.isExtensible(buffer)) Object.defineProperty(buffer, 'a', { value: 8 });\n  }\n});\n","var $ = require('../internals/export');\nvar ownKeys = require('../internals/own-keys');\n\n// `Reflect.ownKeys` method\n// https://tc39.es/ecma262/#sec-reflect.ownkeys\n$({ target: 'Reflect', stat: true }, {\n  ownKeys: ownKeys\n});\n","var $ = require('../internals/export');\nvar getBuiltIn = require('../internals/get-built-in');\nvar anObject = require('../internals/an-object');\nvar FREEZING = require('../internals/freezing');\n\n// `Reflect.preventExtensions` method\n// https://tc39.es/ecma262/#sec-reflect.preventextensions\n$({ target: 'Reflect', stat: true, sham: !FREEZING }, {\n  preventExtensions: function preventExtensions(target) {\n    anObject(target);\n    try {\n      var objectPreventExtensions = getBuiltIn('Object', 'preventExtensions');\n      if (objectPreventExtensions) objectPreventExtensions(target);\n      return true;\n    } catch (error) {\n      return false;\n    }\n  }\n});\n","var $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar anObject = require('../internals/an-object');\nvar isObject = require('../internals/is-object');\nvar isDataDescriptor = require('../internals/is-data-descriptor');\nvar fails = require('../internals/fails');\nvar definePropertyModule = require('../internals/object-define-property');\nvar getOwnPropertyDescriptorModule = require('../internals/object-get-own-property-descriptor');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\n\n// `Reflect.set` method\n// https://tc39.es/ecma262/#sec-reflect.set\nfunction set(target, propertyKey, V /* , receiver */) {\n  var receiver = arguments.length < 4 ? target : arguments[3];\n  var ownDescriptor = getOwnPropertyDescriptorModule.f(anObject(target), propertyKey);\n  var existingDescriptor, prototype, setter;\n  if (!ownDescriptor) {\n    if (isObject(prototype = getPrototypeOf(target))) {\n      return set(prototype, propertyKey, V, receiver);\n    }\n    ownDescriptor = createPropertyDescriptor(0);\n  }\n  if (isDataDescriptor(ownDescriptor)) {\n    if (ownDescriptor.writable === false || !isObject(receiver)) return false;\n    if (existingDescriptor = getOwnPropertyDescriptorModule.f(receiver, propertyKey)) {\n      if (existingDescriptor.get || existingDescriptor.set || existingDescriptor.writable === false) return false;\n      existingDescriptor.value = V;\n      definePropertyModule.f(receiver, propertyKey, existingDescriptor);\n    } else definePropertyModule.f(receiver, propertyKey, createPropertyDescriptor(0, V));\n  } else {\n    setter = ownDescriptor.set;\n    if (setter === undefined) return false;\n    call(setter, receiver, V);\n  } return true;\n}\n\n// MS Edge 17-18 Reflect.set allows setting the property to object\n// with non-writable property on the prototype\nvar MS_EDGE_BUG = fails(function () {\n  var Constructor = function () { /* empty */ };\n  var object = definePropertyModule.f(new Constructor(), 'a', { configurable: true });\n  // eslint-disable-next-line es/no-reflect -- required for testing\n  return Reflect.set(Constructor.prototype, 'a', 1, object) !== false;\n});\n\n$({ target: 'Reflect', stat: true, forced: MS_EDGE_BUG }, {\n  set: set\n});\n","var $ = require('../internals/export');\nvar anObject = require('../internals/an-object');\nvar aPossiblePrototype = require('../internals/a-possible-prototype');\nvar objectSetPrototypeOf = require('../internals/object-set-prototype-of');\n\n// `Reflect.setPrototypeOf` method\n// https://tc39.es/ecma262/#sec-reflect.setprototypeof\nif (objectSetPrototypeOf) $({ target: 'Reflect', stat: true }, {\n  setPrototypeOf: function setPrototypeOf(target, proto) {\n    anObject(target);\n    aPossiblePrototype(proto);\n    try {\n      objectSetPrototypeOf(target, proto);\n      return true;\n    } catch (error) {\n      return false;\n    }\n  }\n});\n","var $ = require('../internals/export');\nvar ReflectMetadataModule = require('../internals/reflect-metadata');\nvar anObject = require('../internals/an-object');\n\nvar toMetadataKey = ReflectMetadataModule.toKey;\nvar ordinaryDefineOwnMetadata = ReflectMetadataModule.set;\n\n// `Reflect.defineMetadata` method\n// https://github.com/rbuckton/reflect-metadata\n$({ target: 'Reflect', stat: true }, {\n  defineMetadata: function defineMetadata(metadataKey, metadataValue, target /* , targetKey */) {\n    var targetKey = arguments.length < 4 ? undefined : toMetadataKey(arguments[3]);\n    ordinaryDefineOwnMetadata(metadataKey, metadataValue, anObject(target), targetKey);\n  }\n});\n","'use strict';\nvar collection = require('../internals/collection');\nvar collectionStrong = require('../internals/collection-strong');\n\n// `Map` constructor\n// https://tc39.es/ecma262/#sec-map-objects\ncollection('Map', function (init) {\n  return function Map() { return init(this, arguments.length ? arguments[0] : undefined); };\n}, collectionStrong);\n","/* eslint-disable es/no-object-getownpropertynames -- safe */\nvar classof = require('../internals/classof-raw');\nvar toIndexedObject = require('../internals/to-indexed-object');\nvar $getOwnPropertyNames = require('../internals/object-get-own-property-names').f;\nvar arraySlice = require('../internals/array-slice-simple');\n\nvar windowNames = typeof window == 'object' && window && Object.getOwnPropertyNames\n  ? Object.getOwnPropertyNames(window) : [];\n\nvar getWindowNames = function (it) {\n  try {\n    return $getOwnPropertyNames(it);\n  } catch (error) {\n    return arraySlice(windowNames);\n  }\n};\n\n// fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window\nmodule.exports.f = function getOwnPropertyNames(it) {\n  return windowNames && classof(it) == 'Window'\n    ? getWindowNames(it)\n    : $getOwnPropertyNames(toIndexedObject(it));\n};\n","var global = require('../internals/global');\nvar toAbsoluteIndex = require('../internals/to-absolute-index');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar createProperty = require('../internals/create-property');\n\nvar Array = global.Array;\nvar max = Math.max;\n\nmodule.exports = function (O, start, end) {\n  var length = lengthOfArrayLike(O);\n  var k = toAbsoluteIndex(start, length);\n  var fin = toAbsoluteIndex(end === undefined ? length : end, length);\n  var result = Array(max(fin - k, 0));\n  for (var n = 0; k < fin; k++, n++) createProperty(result, n, O[k]);\n  result.length = n;\n  return result;\n};\n","'use strict';\nvar toPropertyKey = require('../internals/to-property-key');\nvar definePropertyModule = require('../internals/object-define-property');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\n\nmodule.exports = function (object, key, value) {\n  var propertyKey = toPropertyKey(key);\n  if (propertyKey in object) definePropertyModule.f(object, propertyKey, createPropertyDescriptor(0, value));\n  else object[propertyKey] = value;\n};\n","var wellKnownSymbol = require('../internals/well-known-symbol');\nvar Iterators = require('../internals/iterators');\n\nvar ITERATOR = wellKnownSymbol('iterator');\nvar ArrayPrototype = Array.prototype;\n\n// check on default Array iterator\nmodule.exports = function (it) {\n  return it !== undefined && (Iterators.Array === it || ArrayPrototype[ITERATOR] === it);\n};\n","var global = require('../internals/global');\nvar call = require('../internals/function-call');\nvar aCallable = require('../internals/a-callable');\nvar anObject = require('../internals/an-object');\nvar tryToString = require('../internals/try-to-string');\nvar getIteratorMethod = require('../internals/get-iterator-method');\n\nvar TypeError = global.TypeError;\n\nmodule.exports = function (argument, usingIterator) {\n  var iteratorMethod = arguments.length < 2 ? getIteratorMethod(argument) : usingIterator;\n  if (aCallable(iteratorMethod)) return anObject(call(iteratorMethod, argument));\n  throw TypeError(tryToString(argument) + ' is not iterable');\n};\n","var call = require('../internals/function-call');\nvar anObject = require('../internals/an-object');\nvar getMethod = require('../internals/get-method');\n\nmodule.exports = function (iterator, kind, value) {\n  var innerResult, innerError;\n  anObject(iterator);\n  try {\n    innerResult = getMethod(iterator, 'return');\n    if (!innerResult) {\n      if (kind === 'throw') throw value;\n      return value;\n    }\n    innerResult = call(innerResult, iterator);\n  } catch (error) {\n    innerError = true;\n    innerResult = error;\n  }\n  if (kind === 'throw') throw value;\n  if (innerError) throw innerResult;\n  anObject(innerResult);\n  return value;\n};\n","var wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar ITERATOR = wellKnownSymbol('iterator');\nvar SAFE_CLOSING = false;\n\ntry {\n  var called = 0;\n  var iteratorWithReturn = {\n    next: function () {\n      return { done: !!called++ };\n    },\n    'return': function () {\n      SAFE_CLOSING = true;\n    }\n  };\n  iteratorWithReturn[ITERATOR] = function () {\n    return this;\n  };\n  // eslint-disable-next-line es/no-array-from, no-throw-literal -- required for testing\n  Array.from(iteratorWithReturn, function () { throw 2; });\n} catch (error) { /* empty */ }\n\nmodule.exports = function (exec, SKIP_CLOSING) {\n  if (!SKIP_CLOSING && !SAFE_CLOSING) return false;\n  var ITERATION_SUPPORT = false;\n  try {\n    var object = {};\n    object[ITERATOR] = function () {\n      return {\n        next: function () {\n          return { done: ITERATION_SUPPORT = true };\n        }\n      };\n    };\n    exec(object);\n  } catch (error) { /* empty */ }\n  return ITERATION_SUPPORT;\n};\n","var isCallable = require('../internals/is-callable');\nvar isObject = require('../internals/is-object');\nvar setPrototypeOf = require('../internals/object-set-prototype-of');\n\n// makes subclassing work correct for wrapped built-ins\nmodule.exports = function ($this, dummy, Wrapper) {\n  var NewTarget, NewTargetPrototype;\n  if (\n    // it can work only with native `setPrototypeOf`\n    setPrototypeOf &&\n    // we haven't completely correct pre-ES6 way for getting `new.target`, so use this\n    isCallable(NewTarget = dummy.constructor) &&\n    NewTarget !== Wrapper &&\n    isObject(NewTargetPrototype = NewTarget.prototype) &&\n    NewTargetPrototype !== Wrapper.prototype\n  ) setPrototypeOf($this, NewTargetPrototype);\n  return $this;\n};\n","'use strict';\nvar defineProperty = require('../internals/object-define-property').f;\nvar create = require('../internals/object-create');\nvar redefineAll = require('../internals/redefine-all');\nvar bind = require('../internals/function-bind-context');\nvar anInstance = require('../internals/an-instance');\nvar iterate = require('../internals/iterate');\nvar defineIterator = require('../internals/define-iterator');\nvar setSpecies = require('../internals/set-species');\nvar DESCRIPTORS = require('../internals/descriptors');\nvar fastKey = require('../internals/internal-metadata').fastKey;\nvar InternalStateModule = require('../internals/internal-state');\n\nvar setInternalState = InternalStateModule.set;\nvar internalStateGetterFor = InternalStateModule.getterFor;\n\nmodule.exports = {\n  getConstructor: function (wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER) {\n    var Constructor = wrapper(function (that, iterable) {\n      anInstance(that, Prototype);\n      setInternalState(that, {\n        type: CONSTRUCTOR_NAME,\n        index: create(null),\n        first: undefined,\n        last: undefined,\n        size: 0\n      });\n      if (!DESCRIPTORS) that.size = 0;\n      if (iterable != undefined) iterate(iterable, that[ADDER], { that: that, AS_ENTRIES: IS_MAP });\n    });\n\n    var Prototype = Constructor.prototype;\n\n    var getInternalState = internalStateGetterFor(CONSTRUCTOR_NAME);\n\n    var define = function (that, key, value) {\n      var state = getInternalState(that);\n      var entry = getEntry(that, key);\n      var previous, index;\n      // change existing entry\n      if (entry) {\n        entry.value = value;\n      // create new entry\n      } else {\n        state.last = entry = {\n          index: index = fastKey(key, true),\n          key: key,\n          value: value,\n          previous: previous = state.last,\n          next: undefined,\n          removed: false\n        };\n        if (!state.first) state.first = entry;\n        if (previous) previous.next = entry;\n        if (DESCRIPTORS) state.size++;\n        else that.size++;\n        // add to index\n        if (index !== 'F') state.index[index] = entry;\n      } return that;\n    };\n\n    var getEntry = function (that, key) {\n      var state = getInternalState(that);\n      // fast case\n      var index = fastKey(key);\n      var entry;\n      if (index !== 'F') return state.index[index];\n      // frozen object case\n      for (entry = state.first; entry; entry = entry.next) {\n        if (entry.key == key) return entry;\n      }\n    };\n\n    redefineAll(Prototype, {\n      // `{ Map, Set }.prototype.clear()` methods\n      // https://tc39.es/ecma262/#sec-map.prototype.clear\n      // https://tc39.es/ecma262/#sec-set.prototype.clear\n      clear: function clear() {\n        var that = this;\n        var state = getInternalState(that);\n        var data = state.index;\n        var entry = state.first;\n        while (entry) {\n          entry.removed = true;\n          if (entry.previous) entry.previous = entry.previous.next = undefined;\n          delete data[entry.index];\n          entry = entry.next;\n        }\n        state.first = state.last = undefined;\n        if (DESCRIPTORS) state.size = 0;\n        else that.size = 0;\n      },\n      // `{ Map, Set }.prototype.delete(key)` methods\n      // https://tc39.es/ecma262/#sec-map.prototype.delete\n      // https://tc39.es/ecma262/#sec-set.prototype.delete\n      'delete': function (key) {\n        var that = this;\n        var state = getInternalState(that);\n        var entry = getEntry(that, key);\n        if (entry) {\n          var next = entry.next;\n          var prev = entry.previous;\n          delete state.index[entry.index];\n          entry.removed = true;\n          if (prev) prev.next = next;\n          if (next) next.previous = prev;\n          if (state.first == entry) state.first = next;\n          if (state.last == entry) state.last = prev;\n          if (DESCRIPTORS) state.size--;\n          else that.size--;\n        } return !!entry;\n      },\n      // `{ Map, Set }.prototype.forEach(callbackfn, thisArg = undefined)` methods\n      // https://tc39.es/ecma262/#sec-map.prototype.foreach\n      // https://tc39.es/ecma262/#sec-set.prototype.foreach\n      forEach: function forEach(callbackfn /* , that = undefined */) {\n        var state = getInternalState(this);\n        var boundFunction = bind(callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n        var entry;\n        while (entry = entry ? entry.next : state.first) {\n          boundFunction(entry.value, entry.key, this);\n          // revert to the last existing entry\n          while (entry && entry.removed) entry = entry.previous;\n        }\n      },\n      // `{ Map, Set}.prototype.has(key)` methods\n      // https://tc39.es/ecma262/#sec-map.prototype.has\n      // https://tc39.es/ecma262/#sec-set.prototype.has\n      has: function has(key) {\n        return !!getEntry(this, key);\n      }\n    });\n\n    redefineAll(Prototype, IS_MAP ? {\n      // `Map.prototype.get(key)` method\n      // https://tc39.es/ecma262/#sec-map.prototype.get\n      get: function get(key) {\n        var entry = getEntry(this, key);\n        return entry && entry.value;\n      },\n      // `Map.prototype.set(key, value)` method\n      // https://tc39.es/ecma262/#sec-map.prototype.set\n      set: function set(key, value) {\n        return define(this, key === 0 ? 0 : key, value);\n      }\n    } : {\n      // `Set.prototype.add(value)` method\n      // https://tc39.es/ecma262/#sec-set.prototype.add\n      add: function add(value) {\n        return define(this, value = value === 0 ? 0 : value, value);\n      }\n    });\n    if (DESCRIPTORS) defineProperty(Prototype, 'size', {\n      get: function () {\n        return getInternalState(this).size;\n      }\n    });\n    return Constructor;\n  },\n  setStrong: function (Constructor, CONSTRUCTOR_NAME, IS_MAP) {\n    var ITERATOR_NAME = CONSTRUCTOR_NAME + ' Iterator';\n    var getInternalCollectionState = internalStateGetterFor(CONSTRUCTOR_NAME);\n    var getInternalIteratorState = internalStateGetterFor(ITERATOR_NAME);\n    // `{ Map, Set }.prototype.{ keys, values, entries, @@iterator }()` methods\n    // https://tc39.es/ecma262/#sec-map.prototype.entries\n    // https://tc39.es/ecma262/#sec-map.prototype.keys\n    // https://tc39.es/ecma262/#sec-map.prototype.values\n    // https://tc39.es/ecma262/#sec-map.prototype-@@iterator\n    // https://tc39.es/ecma262/#sec-set.prototype.entries\n    // https://tc39.es/ecma262/#sec-set.prototype.keys\n    // https://tc39.es/ecma262/#sec-set.prototype.values\n    // https://tc39.es/ecma262/#sec-set.prototype-@@iterator\n    defineIterator(Constructor, CONSTRUCTOR_NAME, function (iterated, kind) {\n      setInternalState(this, {\n        type: ITERATOR_NAME,\n        target: iterated,\n        state: getInternalCollectionState(iterated),\n        kind: kind,\n        last: undefined\n      });\n    }, function () {\n      var state = getInternalIteratorState(this);\n      var kind = state.kind;\n      var entry = state.last;\n      // revert to the last existing entry\n      while (entry && entry.removed) entry = entry.previous;\n      // get next entry\n      if (!state.target || !(state.last = entry = entry ? entry.next : state.state.first)) {\n        // or finish the iteration\n        state.target = undefined;\n        return { value: undefined, done: true };\n      }\n      // return step by kind\n      if (kind == 'keys') return { value: entry.key, done: false };\n      if (kind == 'values') return { value: entry.value, done: false };\n      return { value: [entry.key, entry.value], done: false };\n    }, IS_MAP ? 'entries' : 'values', !IS_MAP, true);\n\n    // `{ Map, Set }.prototype[@@species]` accessors\n    // https://tc39.es/ecma262/#sec-get-map-@@species\n    // https://tc39.es/ecma262/#sec-get-set-@@species\n    setSpecies(CONSTRUCTOR_NAME);\n  }\n};\n","'use strict';\nvar $ = require('../internals/export');\nvar call = require('../internals/function-call');\nvar IS_PURE = require('../internals/is-pure');\nvar FunctionName = require('../internals/function-name');\nvar isCallable = require('../internals/is-callable');\nvar createIteratorConstructor = require('../internals/create-iterator-constructor');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\nvar setPrototypeOf = require('../internals/object-set-prototype-of');\nvar setToStringTag = require('../internals/set-to-string-tag');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\nvar redefine = require('../internals/redefine');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar Iterators = require('../internals/iterators');\nvar IteratorsCore = require('../internals/iterators-core');\n\nvar PROPER_FUNCTION_NAME = FunctionName.PROPER;\nvar CONFIGURABLE_FUNCTION_NAME = FunctionName.CONFIGURABLE;\nvar IteratorPrototype = IteratorsCore.IteratorPrototype;\nvar BUGGY_SAFARI_ITERATORS = IteratorsCore.BUGGY_SAFARI_ITERATORS;\nvar ITERATOR = wellKnownSymbol('iterator');\nvar KEYS = 'keys';\nvar VALUES = 'values';\nvar ENTRIES = 'entries';\n\nvar returnThis = function () { return this; };\n\nmodule.exports = function (Iterable, NAME, IteratorConstructor, next, DEFAULT, IS_SET, FORCED) {\n  createIteratorConstructor(IteratorConstructor, NAME, next);\n\n  var getIterationMethod = function (KIND) {\n    if (KIND === DEFAULT && defaultIterator) return defaultIterator;\n    if (!BUGGY_SAFARI_ITERATORS && KIND in IterablePrototype) return IterablePrototype[KIND];\n    switch (KIND) {\n      case KEYS: return function keys() { return new IteratorConstructor(this, KIND); };\n      case VALUES: return function values() { return new IteratorConstructor(this, KIND); };\n      case ENTRIES: return function entries() { return new IteratorConstructor(this, KIND); };\n    } return function () { return new IteratorConstructor(this); };\n  };\n\n  var TO_STRING_TAG = NAME + ' Iterator';\n  var INCORRECT_VALUES_NAME = false;\n  var IterablePrototype = Iterable.prototype;\n  var nativeIterator = IterablePrototype[ITERATOR]\n    || IterablePrototype['@@iterator']\n    || DEFAULT && IterablePrototype[DEFAULT];\n  var defaultIterator = !BUGGY_SAFARI_ITERATORS && nativeIterator || getIterationMethod(DEFAULT);\n  var anyNativeIterator = NAME == 'Array' ? IterablePrototype.entries || nativeIterator : nativeIterator;\n  var CurrentIteratorPrototype, methods, KEY;\n\n  // fix native\n  if (anyNativeIterator) {\n    CurrentIteratorPrototype = getPrototypeOf(anyNativeIterator.call(new Iterable()));\n    if (CurrentIteratorPrototype !== Object.prototype && CurrentIteratorPrototype.next) {\n      if (!IS_PURE && getPrototypeOf(CurrentIteratorPrototype) !== IteratorPrototype) {\n        if (setPrototypeOf) {\n          setPrototypeOf(CurrentIteratorPrototype, IteratorPrototype);\n        } else if (!isCallable(CurrentIteratorPrototype[ITERATOR])) {\n          redefine(CurrentIteratorPrototype, ITERATOR, returnThis);\n        }\n      }\n      // Set @@toStringTag to native iterators\n      setToStringTag(CurrentIteratorPrototype, TO_STRING_TAG, true, true);\n      if (IS_PURE) Iterators[TO_STRING_TAG] = returnThis;\n    }\n  }\n\n  // fix Array.prototype.{ values, @@iterator }.name in V8 / FF\n  if (PROPER_FUNCTION_NAME && DEFAULT == VALUES && nativeIterator && nativeIterator.name !== VALUES) {\n    if (!IS_PURE && CONFIGURABLE_FUNCTION_NAME) {\n      createNonEnumerableProperty(IterablePrototype, 'name', VALUES);\n    } else {\n      INCORRECT_VALUES_NAME = true;\n      defaultIterator = function values() { return call(nativeIterator, this); };\n    }\n  }\n\n  // export additional methods\n  if (DEFAULT) {\n    methods = {\n      values: getIterationMethod(VALUES),\n      keys: IS_SET ? defaultIterator : getIterationMethod(KEYS),\n      entries: getIterationMethod(ENTRIES)\n    };\n    if (FORCED) for (KEY in methods) {\n      if (BUGGY_SAFARI_ITERATORS || INCORRECT_VALUES_NAME || !(KEY in IterablePrototype)) {\n        redefine(IterablePrototype, KEY, methods[KEY]);\n      }\n    } else $({ target: NAME, proto: true, forced: BUGGY_SAFARI_ITERATORS || INCORRECT_VALUES_NAME }, methods);\n  }\n\n  // define iterator\n  if ((!IS_PURE || FORCED) && IterablePrototype[ITERATOR] !== defaultIterator) {\n    redefine(IterablePrototype, ITERATOR, defaultIterator, { name: DEFAULT });\n  }\n  Iterators[NAME] = defaultIterator;\n\n  return methods;\n};\n","'use strict';\nvar IteratorPrototype = require('../internals/iterators-core').IteratorPrototype;\nvar create = require('../internals/object-create');\nvar createPropertyDescriptor = require('../internals/create-property-descriptor');\nvar setToStringTag = require('../internals/set-to-string-tag');\nvar Iterators = require('../internals/iterators');\n\nvar returnThis = function () { return this; };\n\nmodule.exports = function (IteratorConstructor, NAME, next, ENUMERABLE_NEXT) {\n  var TO_STRING_TAG = NAME + ' Iterator';\n  IteratorConstructor.prototype = create(IteratorPrototype, { next: createPropertyDescriptor(+!ENUMERABLE_NEXT, next) });\n  setToStringTag(IteratorConstructor, TO_STRING_TAG, false, true);\n  Iterators[TO_STRING_TAG] = returnThis;\n  return IteratorConstructor;\n};\n","'use strict';\nvar getBuiltIn = require('../internals/get-built-in');\nvar definePropertyModule = require('../internals/object-define-property');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar DESCRIPTORS = require('../internals/descriptors');\n\nvar SPECIES = wellKnownSymbol('species');\n\nmodule.exports = function (CONSTRUCTOR_NAME) {\n  var Constructor = getBuiltIn(CONSTRUCTOR_NAME);\n  var defineProperty = definePropertyModule.f;\n\n  if (DESCRIPTORS && Constructor && !Constructor[SPECIES]) {\n    defineProperty(Constructor, SPECIES, {\n      configurable: true,\n      get: function () { return this; }\n    });\n  }\n};\n","'use strict';\nvar global = require('../internals/global');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar redefineAll = require('../internals/redefine-all');\nvar InternalMetadataModule = require('../internals/internal-metadata');\nvar collection = require('../internals/collection');\nvar collectionWeak = require('../internals/collection-weak');\nvar isObject = require('../internals/is-object');\nvar isExtensible = require('../internals/object-is-extensible');\nvar enforceInternalState = require('../internals/internal-state').enforce;\nvar NATIVE_WEAK_MAP = require('../internals/native-weak-map');\n\nvar IS_IE11 = !global.ActiveXObject && 'ActiveXObject' in global;\nvar InternalWeakMap;\n\nvar wrapper = function (init) {\n  return function WeakMap() {\n    return init(this, arguments.length ? arguments[0] : undefined);\n  };\n};\n\n// `WeakMap` constructor\n// https://tc39.es/ecma262/#sec-weakmap-constructor\nvar $WeakMap = collection('WeakMap', wrapper, collectionWeak);\n\n// IE11 WeakMap frozen keys fix\n// We can't use feature detection because it crash some old IE builds\n// https://github.com/zloirock/core-js/issues/485\nif (NATIVE_WEAK_MAP && IS_IE11) {\n  InternalWeakMap = collectionWeak.getConstructor(wrapper, 'WeakMap', true);\n  InternalMetadataModule.enable();\n  var WeakMapPrototype = $WeakMap.prototype;\n  var nativeDelete = uncurryThis(WeakMapPrototype['delete']);\n  var nativeHas = uncurryThis(WeakMapPrototype.has);\n  var nativeGet = uncurryThis(WeakMapPrototype.get);\n  var nativeSet = uncurryThis(WeakMapPrototype.set);\n  redefineAll(WeakMapPrototype, {\n    'delete': function (key) {\n      if (isObject(key) && !isExtensible(key)) {\n        var state = enforceInternalState(this);\n        if (!state.frozen) state.frozen = new InternalWeakMap();\n        return nativeDelete(this, key) || state.frozen['delete'](key);\n      } return nativeDelete(this, key);\n    },\n    has: function has(key) {\n      if (isObject(key) && !isExtensible(key)) {\n        var state = enforceInternalState(this);\n        if (!state.frozen) state.frozen = new InternalWeakMap();\n        return nativeHas(this, key) || state.frozen.has(key);\n      } return nativeHas(this, key);\n    },\n    get: function get(key) {\n      if (isObject(key) && !isExtensible(key)) {\n        var state = enforceInternalState(this);\n        if (!state.frozen) state.frozen = new InternalWeakMap();\n        return nativeHas(this, key) ? nativeGet(this, key) : state.frozen.get(key);\n      } return nativeGet(this, key);\n    },\n    set: function set(key, value) {\n      if (isObject(key) && !isExtensible(key)) {\n        var state = enforceInternalState(this);\n        if (!state.frozen) state.frozen = new InternalWeakMap();\n        nativeHas(this, key) ? nativeSet(this, key, value) : state.frozen.set(key, value);\n      } else nativeSet(this, key, value);\n      return this;\n    }\n  });\n}\n","'use strict';\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar redefineAll = require('../internals/redefine-all');\nvar getWeakData = require('../internals/internal-metadata').getWeakData;\nvar anObject = require('../internals/an-object');\nvar isObject = require('../internals/is-object');\nvar anInstance = require('../internals/an-instance');\nvar iterate = require('../internals/iterate');\nvar ArrayIterationModule = require('../internals/array-iteration');\nvar hasOwn = require('../internals/has-own-property');\nvar InternalStateModule = require('../internals/internal-state');\n\nvar setInternalState = InternalStateModule.set;\nvar internalStateGetterFor = InternalStateModule.getterFor;\nvar find = ArrayIterationModule.find;\nvar findIndex = ArrayIterationModule.findIndex;\nvar splice = uncurryThis([].splice);\nvar id = 0;\n\n// fallback for uncaught frozen keys\nvar uncaughtFrozenStore = function (store) {\n  return store.frozen || (store.frozen = new UncaughtFrozenStore());\n};\n\nvar UncaughtFrozenStore = function () {\n  this.entries = [];\n};\n\nvar findUncaughtFrozen = function (store, key) {\n  return find(store.entries, function (it) {\n    return it[0] === key;\n  });\n};\n\nUncaughtFrozenStore.prototype = {\n  get: function (key) {\n    var entry = findUncaughtFrozen(this, key);\n    if (entry) return entry[1];\n  },\n  has: function (key) {\n    return !!findUncaughtFrozen(this, key);\n  },\n  set: function (key, value) {\n    var entry = findUncaughtFrozen(this, key);\n    if (entry) entry[1] = value;\n    else this.entries.push([key, value]);\n  },\n  'delete': function (key) {\n    var index = findIndex(this.entries, function (it) {\n      return it[0] === key;\n    });\n    if (~index) splice(this.entries, index, 1);\n    return !!~index;\n  }\n};\n\nmodule.exports = {\n  getConstructor: function (wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER) {\n    var Constructor = wrapper(function (that, iterable) {\n      anInstance(that, Prototype);\n      setInternalState(that, {\n        type: CONSTRUCTOR_NAME,\n        id: id++,\n        frozen: undefined\n      });\n      if (iterable != undefined) iterate(iterable, that[ADDER], { that: that, AS_ENTRIES: IS_MAP });\n    });\n\n    var Prototype = Constructor.prototype;\n\n    var getInternalState = internalStateGetterFor(CONSTRUCTOR_NAME);\n\n    var define = function (that, key, value) {\n      var state = getInternalState(that);\n      var data = getWeakData(anObject(key), true);\n      if (data === true) uncaughtFrozenStore(state).set(key, value);\n      else data[state.id] = value;\n      return that;\n    };\n\n    redefineAll(Prototype, {\n      // `{ WeakMap, WeakSet }.prototype.delete(key)` methods\n      // https://tc39.es/ecma262/#sec-weakmap.prototype.delete\n      // https://tc39.es/ecma262/#sec-weakset.prototype.delete\n      'delete': function (key) {\n        var state = getInternalState(this);\n        if (!isObject(key)) return false;\n        var data = getWeakData(key);\n        if (data === true) return uncaughtFrozenStore(state)['delete'](key);\n        return data && hasOwn(data, state.id) && delete data[state.id];\n      },\n      // `{ WeakMap, WeakSet }.prototype.has(key)` methods\n      // https://tc39.es/ecma262/#sec-weakmap.prototype.has\n      // https://tc39.es/ecma262/#sec-weakset.prototype.has\n      has: function has(key) {\n        var state = getInternalState(this);\n        if (!isObject(key)) return false;\n        var data = getWeakData(key);\n        if (data === true) return uncaughtFrozenStore(state).has(key);\n        return data && hasOwn(data, state.id);\n      }\n    });\n\n    redefineAll(Prototype, IS_MAP ? {\n      // `WeakMap.prototype.get(key)` method\n      // https://tc39.es/ecma262/#sec-weakmap.prototype.get\n      get: function get(key) {\n        var state = getInternalState(this);\n        if (isObject(key)) {\n          var data = getWeakData(key);\n          if (data === true) return uncaughtFrozenStore(state).get(key);\n          return data ? data[state.id] : undefined;\n        }\n      },\n      // `WeakMap.prototype.set(key, value)` method\n      // https://tc39.es/ecma262/#sec-weakmap.prototype.set\n      set: function set(key, value) {\n        return define(this, key, value);\n      }\n    } : {\n      // `WeakSet.prototype.add(value)` method\n      // https://tc39.es/ecma262/#sec-weakset.prototype.add\n      add: function add(value) {\n        return define(this, value, true);\n      }\n    });\n\n    return Constructor;\n  }\n};\n","var bind = require('../internals/function-bind-context');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar IndexedObject = require('../internals/indexed-object');\nvar toObject = require('../internals/to-object');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar arraySpeciesCreate = require('../internals/array-species-create');\n\nvar push = uncurryThis([].push);\n\n// `Array.prototype.{ forEach, map, filter, some, every, find, findIndex, filterReject }` methods implementation\nvar createMethod = function (TYPE) {\n  var IS_MAP = TYPE == 1;\n  var IS_FILTER = TYPE == 2;\n  var IS_SOME = TYPE == 3;\n  var IS_EVERY = TYPE == 4;\n  var IS_FIND_INDEX = TYPE == 6;\n  var IS_FILTER_REJECT = TYPE == 7;\n  var NO_HOLES = TYPE == 5 || IS_FIND_INDEX;\n  return function ($this, callbackfn, that, specificCreate) {\n    var O = toObject($this);\n    var self = IndexedObject(O);\n    var boundFunction = bind(callbackfn, that);\n    var length = lengthOfArrayLike(self);\n    var index = 0;\n    var create = specificCreate || arraySpeciesCreate;\n    var target = IS_MAP ? create($this, length) : IS_FILTER || IS_FILTER_REJECT ? create($this, 0) : undefined;\n    var value, result;\n    for (;length > index; index++) if (NO_HOLES || index in self) {\n      value = self[index];\n      result = boundFunction(value, index, O);\n      if (TYPE) {\n        if (IS_MAP) target[index] = result; // map\n        else if (result) switch (TYPE) {\n          case 3: return true;              // some\n          case 5: return value;             // find\n          case 6: return index;             // findIndex\n          case 2: push(target, value);      // filter\n        } else switch (TYPE) {\n          case 4: return false;             // every\n          case 7: push(target, value);      // filterReject\n        }\n      }\n    }\n    return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : target;\n  };\n};\n\nmodule.exports = {\n  // `Array.prototype.forEach` method\n  // https://tc39.es/ecma262/#sec-array.prototype.foreach\n  forEach: createMethod(0),\n  // `Array.prototype.map` method\n  // https://tc39.es/ecma262/#sec-array.prototype.map\n  map: createMethod(1),\n  // `Array.prototype.filter` method\n  // https://tc39.es/ecma262/#sec-array.prototype.filter\n  filter: createMethod(2),\n  // `Array.prototype.some` method\n  // https://tc39.es/ecma262/#sec-array.prototype.some\n  some: createMethod(3),\n  // `Array.prototype.every` method\n  // https://tc39.es/ecma262/#sec-array.prototype.every\n  every: createMethod(4),\n  // `Array.prototype.find` method\n  // https://tc39.es/ecma262/#sec-array.prototype.find\n  find: createMethod(5),\n  // `Array.prototype.findIndex` method\n  // https://tc39.es/ecma262/#sec-array.prototype.findIndex\n  findIndex: createMethod(6),\n  // `Array.prototype.filterReject` method\n  // https://github.com/tc39/proposal-array-filtering\n  filterReject: createMethod(7)\n};\n","var global = require('../internals/global');\nvar isArray = require('../internals/is-array');\nvar isConstructor = require('../internals/is-constructor');\nvar isObject = require('../internals/is-object');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\n\nvar SPECIES = wellKnownSymbol('species');\nvar Array = global.Array;\n\n// a part of `ArraySpeciesCreate` abstract operation\n// https://tc39.es/ecma262/#sec-arrayspeciescreate\nmodule.exports = function (originalArray) {\n  var C;\n  if (isArray(originalArray)) {\n    C = originalArray.constructor;\n    // cross-realm fallback\n    if (isConstructor(C) && (C === Array || isArray(C.prototype))) C = undefined;\n    else if (isObject(C)) {\n      C = C[SPECIES];\n      if (C === null) C = undefined;\n    }\n  } return C === undefined ? Array : C;\n};\n","var classof = require('../internals/classof-raw');\n\n// `IsArray` abstract operation\n// https://tc39.es/ecma262/#sec-isarray\n// eslint-disable-next-line es/no-array-isarray -- safe\nmodule.exports = Array.isArray || function isArray(argument) {\n  return classof(argument) == 'Array';\n};\n","var $ = require('../internals/export');\nvar ReflectMetadataModule = require('../internals/reflect-metadata');\nvar anObject = require('../internals/an-object');\n\nvar toMetadataKey = ReflectMetadataModule.toKey;\nvar getOrCreateMetadataMap = ReflectMetadataModule.getMap;\nvar store = ReflectMetadataModule.store;\n\n// `Reflect.deleteMetadata` method\n// https://github.com/rbuckton/reflect-metadata\n$({ target: 'Reflect', stat: true }, {\n  deleteMetadata: function deleteMetadata(metadataKey, target /* , targetKey */) {\n    var targetKey = arguments.length < 3 ? undefined : toMetadataKey(arguments[2]);\n    var metadataMap = getOrCreateMetadataMap(anObject(target), targetKey, false);\n    if (metadataMap === undefined || !metadataMap['delete'](metadataKey)) return false;\n    if (metadataMap.size) return true;\n    var targetMetadata = store.get(target);\n    targetMetadata['delete'](targetKey);\n    return !!targetMetadata.size || store['delete'](target);\n  }\n});\n","var $ = require('../internals/export');\nvar ReflectMetadataModule = require('../internals/reflect-metadata');\nvar anObject = require('../internals/an-object');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\n\nvar ordinaryHasOwnMetadata = ReflectMetadataModule.has;\nvar ordinaryGetOwnMetadata = ReflectMetadataModule.get;\nvar toMetadataKey = ReflectMetadataModule.toKey;\n\nvar ordinaryGetMetadata = function (MetadataKey, O, P) {\n  var hasOwn = ordinaryHasOwnMetadata(MetadataKey, O, P);\n  if (hasOwn) return ordinaryGetOwnMetadata(MetadataKey, O, P);\n  var parent = getPrototypeOf(O);\n  return parent !== null ? ordinaryGetMetadata(MetadataKey, parent, P) : undefined;\n};\n\n// `Reflect.getMetadata` method\n// https://github.com/rbuckton/reflect-metadata\n$({ target: 'Reflect', stat: true }, {\n  getMetadata: function getMetadata(metadataKey, target /* , targetKey */) {\n    var targetKey = arguments.length < 3 ? undefined : toMetadataKey(arguments[2]);\n    return ordinaryGetMetadata(metadataKey, anObject(target), targetKey);\n  }\n});\n","var $ = require('../internals/export');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar ReflectMetadataModule = require('../internals/reflect-metadata');\nvar anObject = require('../internals/an-object');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\nvar $arrayUniqueBy = require('../internals/array-unique-by');\n\nvar arrayUniqueBy = uncurryThis($arrayUniqueBy);\nvar concat = uncurryThis([].concat);\nvar ordinaryOwnMetadataKeys = ReflectMetadataModule.keys;\nvar toMetadataKey = ReflectMetadataModule.toKey;\n\nvar ordinaryMetadataKeys = function (O, P) {\n  var oKeys = ordinaryOwnMetadataKeys(O, P);\n  var parent = getPrototypeOf(O);\n  if (parent === null) return oKeys;\n  var pKeys = ordinaryMetadataKeys(parent, P);\n  return pKeys.length ? oKeys.length ? arrayUniqueBy(concat(oKeys, pKeys)) : pKeys : oKeys;\n};\n\n// `Reflect.getMetadataKeys` method\n// https://github.com/rbuckton/reflect-metadata\n$({ target: 'Reflect', stat: true }, {\n  getMetadataKeys: function getMetadataKeys(target /* , targetKey */) {\n    var targetKey = arguments.length < 2 ? undefined : toMetadataKey(arguments[1]);\n    return ordinaryMetadataKeys(anObject(target), targetKey);\n  }\n});\n","'use strict';\nvar getBuiltIn = require('../internals/get-built-in');\nvar uncurryThis = require('../internals/function-uncurry-this');\nvar aCallable = require('../internals/a-callable');\nvar lengthOfArrayLike = require('../internals/length-of-array-like');\nvar toObject = require('../internals/to-object');\nvar arraySpeciesCreate = require('../internals/array-species-create');\n\nvar Map = getBuiltIn('Map');\nvar MapPrototype = Map.prototype;\nvar mapForEach = uncurryThis(MapPrototype.forEach);\nvar mapHas = uncurryThis(MapPrototype.has);\nvar mapSet = uncurryThis(MapPrototype.set);\nvar push = uncurryThis([].push);\n\n// `Array.prototype.uniqueBy` method\n// https://github.com/tc39/proposal-array-unique\nmodule.exports = function uniqueBy(resolver) {\n  var that = toObject(this);\n  var length = lengthOfArrayLike(that);\n  var result = arraySpeciesCreate(that, 0);\n  var map = new Map();\n  var resolverFunction = resolver != null ? aCallable(resolver) : function (value) {\n    return value;\n  };\n  var index, item, key;\n  for (index = 0; index < length; index++) {\n    item = that[index];\n    key = resolverFunction(item);\n    if (!mapHas(map, key)) mapSet(map, key, item);\n  }\n  mapForEach(map, function (value) {\n    push(result, value);\n  });\n  return result;\n};\n","var $ = require('../internals/export');\nvar ReflectMetadataModule = require('../internals/reflect-metadata');\nvar anObject = require('../internals/an-object');\n\nvar ordinaryGetOwnMetadata = ReflectMetadataModule.get;\nvar toMetadataKey = ReflectMetadataModule.toKey;\n\n// `Reflect.getOwnMetadata` method\n// https://github.com/rbuckton/reflect-metadata\n$({ target: 'Reflect', stat: true }, {\n  getOwnMetadata: function getOwnMetadata(metadataKey, target /* , targetKey */) {\n    var targetKey = arguments.length < 3 ? undefined : toMetadataKey(arguments[2]);\n    return ordinaryGetOwnMetadata(metadataKey, anObject(target), targetKey);\n  }\n});\n","var $ = require('../internals/export');\nvar ReflectMetadataModule = require('../internals/reflect-metadata');\nvar anObject = require('../internals/an-object');\n\nvar ordinaryOwnMetadataKeys = ReflectMetadataModule.keys;\nvar toMetadataKey = ReflectMetadataModule.toKey;\n\n// `Reflect.getOwnMetadataKeys` method\n// https://github.com/rbuckton/reflect-metadata\n$({ target: 'Reflect', stat: true }, {\n  getOwnMetadataKeys: function getOwnMetadataKeys(target /* , targetKey */) {\n    var targetKey = arguments.length < 2 ? undefined : toMetadataKey(arguments[1]);\n    return ordinaryOwnMetadataKeys(anObject(target), targetKey);\n  }\n});\n","var $ = require('../internals/export');\nvar ReflectMetadataModule = require('../internals/reflect-metadata');\nvar anObject = require('../internals/an-object');\nvar getPrototypeOf = require('../internals/object-get-prototype-of');\n\nvar ordinaryHasOwnMetadata = ReflectMetadataModule.has;\nvar toMetadataKey = ReflectMetadataModule.toKey;\n\nvar ordinaryHasMetadata = function (MetadataKey, O, P) {\n  var hasOwn = ordinaryHasOwnMetadata(MetadataKey, O, P);\n  if (hasOwn) return true;\n  var parent = getPrototypeOf(O);\n  return parent !== null ? ordinaryHasMetadata(MetadataKey, parent, P) : false;\n};\n\n// `Reflect.hasMetadata` method\n// https://github.com/rbuckton/reflect-metadata\n$({ target: 'Reflect', stat: true }, {\n  hasMetadata: function hasMetadata(metadataKey, target /* , targetKey */) {\n    var targetKey = arguments.length < 3 ? undefined : toMetadataKey(arguments[2]);\n    return ordinaryHasMetadata(metadataKey, anObject(target), targetKey);\n  }\n});\n","var $ = require('../internals/export');\nvar ReflectMetadataModule = require('../internals/reflect-metadata');\nvar anObject = require('../internals/an-object');\n\nvar ordinaryHasOwnMetadata = ReflectMetadataModule.has;\nvar toMetadataKey = ReflectMetadataModule.toKey;\n\n// `Reflect.hasOwnMetadata` method\n// https://github.com/rbuckton/reflect-metadata\n$({ target: 'Reflect', stat: true }, {\n  hasOwnMetadata: function hasOwnMetadata(metadataKey, target /* , targetKey */) {\n    var targetKey = arguments.length < 3 ? undefined : toMetadataKey(arguments[2]);\n    return ordinaryHasOwnMetadata(metadataKey, anObject(target), targetKey);\n  }\n});\n","var $ = require('../internals/export');\nvar ReflectMetadataModule = require('../internals/reflect-metadata');\nvar anObject = require('../internals/an-object');\n\nvar toMetadataKey = ReflectMetadataModule.toKey;\nvar ordinaryDefineOwnMetadata = ReflectMetadataModule.set;\n\n// `Reflect.metadata` method\n// https://github.com/rbuckton/reflect-metadata\n$({ target: 'Reflect', stat: true }, {\n  metadata: function metadata(metadataKey, metadataValue) {\n    return function decorator(target, key) {\n      ordinaryDefineOwnMetadata(metadataKey, metadataValue, anObject(target), toMetadataKey(key));\n    };\n  }\n});\n","function _typeof(obj) { \"@babel/helpers - typeof\"; return _typeof = \"function\" == typeof Symbol && \"symbol\" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && \"function\" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }, _typeof(obj); }\n\n/**\n* @license Angular v11.0.0-next.6+162.sha-170af07\n* (c) 2010-2020 Google LLC. https://angular.io/\n* License: MIT\n*/\n(function (factory) {\n  typeof define === 'function' && define.amd ? define(factory) : factory();\n})(function () {\n  'use strict';\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n\n  var Zone$1 = function (global) {\n    var performance = global['performance'];\n\n    function mark(name) {\n      performance && performance['mark'] && performance['mark'](name);\n    }\n\n    function performanceMeasure(name, label) {\n      performance && performance['measure'] && performance['measure'](name, label);\n    }\n\n    mark('Zone'); // Initialize before it's accessed below.\n    // __Zone_symbol_prefix global can be used to override the default zone\n    // symbol prefix with a custom one if needed.\n\n    var symbolPrefix = global['__Zone_symbol_prefix'] || '__zone_symbol__';\n\n    function __symbol__(name) {\n      return symbolPrefix + name;\n    }\n\n    var checkDuplicate = global[__symbol__('forceDuplicateZoneCheck')] === true;\n\n    if (global['Zone']) {\n      // if global['Zone'] already exists (maybe zone.js was already loaded or\n      // some other lib also registered a global object named Zone), we may need\n      // to throw an error, but sometimes user may not want this error.\n      // For example,\n      // we have two web pages, page1 includes zone.js, page2 doesn't.\n      // and the 1st time user load page1 and page2, everything work fine,\n      // but when user load page2 again, error occurs because global['Zone'] already exists.\n      // so we add a flag to let user choose whether to throw this error or not.\n      // By default, if existing Zone is from zone.js, we will not throw the error.\n      if (checkDuplicate || typeof global['Zone'].__symbol__ !== 'function') {\n        throw new Error('Zone already loaded.');\n      } else {\n        return global['Zone'];\n      }\n    }\n\n    var Zone =\n    /** @class */\n    function () {\n      function Zone(parent, zoneSpec) {\n        this._parent = parent;\n        this._name = zoneSpec ? zoneSpec.name || 'unnamed' : '<root>';\n        this._properties = zoneSpec && zoneSpec.properties || {};\n        this._zoneDelegate = new ZoneDelegate(this, this._parent && this._parent._zoneDelegate, zoneSpec);\n      }\n\n      Zone.assertZonePatched = function () {\n        if (global['Promise'] !== patches['ZoneAwarePromise']) {\n          throw new Error('Zone.js has detected that ZoneAwarePromise `(window|global).Promise` ' + 'has been overwritten.\\n' + 'Most likely cause is that a Promise polyfill has been loaded ' + 'after Zone.js (Polyfilling Promise api is not necessary when zone.js is loaded. ' + 'If you must load one, do so before loading zone.js.)');\n        }\n      };\n\n      Object.defineProperty(Zone, \"root\", {\n        get: function get() {\n          var zone = Zone.current;\n\n          while (zone.parent) {\n            zone = zone.parent;\n          }\n\n          return zone;\n        },\n        enumerable: false,\n        configurable: true\n      });\n      Object.defineProperty(Zone, \"current\", {\n        get: function get() {\n          return _currentZoneFrame.zone;\n        },\n        enumerable: false,\n        configurable: true\n      });\n      Object.defineProperty(Zone, \"currentTask\", {\n        get: function get() {\n          return _currentTask;\n        },\n        enumerable: false,\n        configurable: true\n      }); // tslint:disable-next-line:require-internal-with-underscore\n\n      Zone.__load_patch = function (name, fn) {\n        if (patches.hasOwnProperty(name)) {\n          if (checkDuplicate) {\n            throw Error('Already loaded patch: ' + name);\n          }\n        } else if (!global['__Zone_disable_' + name]) {\n          var perfName = 'Zone:' + name;\n          mark(perfName);\n          patches[name] = fn(global, Zone, _api);\n          performanceMeasure(perfName, perfName);\n        }\n      };\n\n      Object.defineProperty(Zone.prototype, \"parent\", {\n        get: function get() {\n          return this._parent;\n        },\n        enumerable: false,\n        configurable: true\n      });\n      Object.defineProperty(Zone.prototype, \"name\", {\n        get: function get() {\n          return this._name;\n        },\n        enumerable: false,\n        configurable: true\n      });\n\n      Zone.prototype.get = function (key) {\n        var zone = this.getZoneWith(key);\n        if (zone) return zone._properties[key];\n      };\n\n      Zone.prototype.getZoneWith = function (key) {\n        var current = this;\n\n        while (current) {\n          if (current._properties.hasOwnProperty(key)) {\n            return current;\n          }\n\n          current = current._parent;\n        }\n\n        return null;\n      };\n\n      Zone.prototype.fork = function (zoneSpec) {\n        if (!zoneSpec) throw new Error('ZoneSpec required!');\n        return this._zoneDelegate.fork(this, zoneSpec);\n      };\n\n      Zone.prototype.wrap = function (callback, source) {\n        if (typeof callback !== 'function') {\n          throw new Error('Expecting function got: ' + callback);\n        }\n\n        var _callback = this._zoneDelegate.intercept(this, callback, source);\n\n        var zone = this;\n        return function () {\n          return zone.runGuarded(_callback, this, arguments, source);\n        };\n      };\n\n      Zone.prototype.run = function (callback, applyThis, applyArgs, source) {\n        _currentZoneFrame = {\n          parent: _currentZoneFrame,\n          zone: this\n        };\n\n        try {\n          return this._zoneDelegate.invoke(this, callback, applyThis, applyArgs, source);\n        } finally {\n          _currentZoneFrame = _currentZoneFrame.parent;\n        }\n      };\n\n      Zone.prototype.runGuarded = function (callback, applyThis, applyArgs, source) {\n        if (applyThis === void 0) {\n          applyThis = null;\n        }\n\n        _currentZoneFrame = {\n          parent: _currentZoneFrame,\n          zone: this\n        };\n\n        try {\n          try {\n            return this._zoneDelegate.invoke(this, callback, applyThis, applyArgs, source);\n          } catch (error) {\n            if (this._zoneDelegate.handleError(this, error)) {\n              throw error;\n            }\n          }\n        } finally {\n          _currentZoneFrame = _currentZoneFrame.parent;\n        }\n      };\n\n      Zone.prototype.runTask = function (task, applyThis, applyArgs) {\n        if (task.zone != this) {\n          throw new Error('A task can only be run in the zone of creation! (Creation: ' + (task.zone || NO_ZONE).name + '; Execution: ' + this.name + ')');\n        } // https://github.com/angular/zone.js/issues/778, sometimes eventTask\n        // will run in notScheduled(canceled) state, we should not try to\n        // run such kind of task but just return\n\n\n        if (task.state === notScheduled && (task.type === eventTask || task.type === macroTask)) {\n          return;\n        }\n\n        var reEntryGuard = task.state != running;\n        reEntryGuard && task._transitionTo(running, scheduled);\n        task.runCount++;\n        var previousTask = _currentTask;\n        _currentTask = task;\n        _currentZoneFrame = {\n          parent: _currentZoneFrame,\n          zone: this\n        };\n\n        try {\n          if (task.type == macroTask && task.data && !task.data.isPeriodic) {\n            task.cancelFn = undefined;\n          }\n\n          try {\n            return this._zoneDelegate.invokeTask(this, task, applyThis, applyArgs);\n          } catch (error) {\n            if (this._zoneDelegate.handleError(this, error)) {\n              throw error;\n            }\n          }\n        } finally {\n          // if the task's state is notScheduled or unknown, then it has already been cancelled\n          // we should not reset the state to scheduled\n          if (task.state !== notScheduled && task.state !== unknown) {\n            if (task.type == eventTask || task.data && task.data.isPeriodic) {\n              reEntryGuard && task._transitionTo(scheduled, running);\n            } else {\n              task.runCount = 0;\n\n              this._updateTaskCount(task, -1);\n\n              reEntryGuard && task._transitionTo(notScheduled, running, notScheduled);\n            }\n          }\n\n          _currentZoneFrame = _currentZoneFrame.parent;\n          _currentTask = previousTask;\n        }\n      };\n\n      Zone.prototype.scheduleTask = function (task) {\n        if (task.zone && task.zone !== this) {\n          // check if the task was rescheduled, the newZone\n          // should not be the children of the original zone\n          var newZone = this;\n\n          while (newZone) {\n            if (newZone === task.zone) {\n              throw Error(\"can not reschedule task to \" + this.name + \" which is descendants of the original zone \" + task.zone.name);\n            }\n\n            newZone = newZone.parent;\n          }\n        }\n\n        task._transitionTo(scheduling, notScheduled);\n\n        var zoneDelegates = [];\n        task._zoneDelegates = zoneDelegates;\n        task._zone = this;\n\n        try {\n          task = this._zoneDelegate.scheduleTask(this, task);\n        } catch (err) {\n          // should set task's state to unknown when scheduleTask throw error\n          // because the err may from reschedule, so the fromState maybe notScheduled\n          task._transitionTo(unknown, scheduling, notScheduled); // TODO: @JiaLiPassion, should we check the result from handleError?\n\n\n          this._zoneDelegate.handleError(this, err);\n\n          throw err;\n        }\n\n        if (task._zoneDelegates === zoneDelegates) {\n          // we have to check because internally the delegate can reschedule the task.\n          this._updateTaskCount(task, 1);\n        }\n\n        if (task.state == scheduling) {\n          task._transitionTo(scheduled, scheduling);\n        }\n\n        return task;\n      };\n\n      Zone.prototype.scheduleMicroTask = function (source, callback, data, customSchedule) {\n        return this.scheduleTask(new ZoneTask(microTask, source, callback, data, customSchedule, undefined));\n      };\n\n      Zone.prototype.scheduleMacroTask = function (source, callback, data, customSchedule, customCancel) {\n        return this.scheduleTask(new ZoneTask(macroTask, source, callback, data, customSchedule, customCancel));\n      };\n\n      Zone.prototype.scheduleEventTask = function (source, callback, data, customSchedule, customCancel) {\n        return this.scheduleTask(new ZoneTask(eventTask, source, callback, data, customSchedule, customCancel));\n      };\n\n      Zone.prototype.cancelTask = function (task) {\n        if (task.zone != this) throw new Error('A task can only be cancelled in the zone of creation! (Creation: ' + (task.zone || NO_ZONE).name + '; Execution: ' + this.name + ')');\n\n        task._transitionTo(canceling, scheduled, running);\n\n        try {\n          this._zoneDelegate.cancelTask(this, task);\n        } catch (err) {\n          // if error occurs when cancelTask, transit the state to unknown\n          task._transitionTo(unknown, canceling);\n\n          this._zoneDelegate.handleError(this, err);\n\n          throw err;\n        }\n\n        this._updateTaskCount(task, -1);\n\n        task._transitionTo(notScheduled, canceling);\n\n        task.runCount = 0;\n        return task;\n      };\n\n      Zone.prototype._updateTaskCount = function (task, count) {\n        var zoneDelegates = task._zoneDelegates;\n\n        if (count == -1) {\n          task._zoneDelegates = null;\n        }\n\n        for (var i = 0; i < zoneDelegates.length; i++) {\n          zoneDelegates[i]._updateTaskCount(task.type, count);\n        }\n      };\n\n      return Zone;\n    }(); // tslint:disable-next-line:require-internal-with-underscore\n\n\n    Zone.__symbol__ = __symbol__;\n    var DELEGATE_ZS = {\n      name: '',\n      onHasTask: function onHasTask(delegate, _, target, hasTaskState) {\n        return delegate.hasTask(target, hasTaskState);\n      },\n      onScheduleTask: function onScheduleTask(delegate, _, target, task) {\n        return delegate.scheduleTask(target, task);\n      },\n      onInvokeTask: function onInvokeTask(delegate, _, target, task, applyThis, applyArgs) {\n        return delegate.invokeTask(target, task, applyThis, applyArgs);\n      },\n      onCancelTask: function onCancelTask(delegate, _, target, task) {\n        return delegate.cancelTask(target, task);\n      }\n    };\n\n    var ZoneDelegate =\n    /** @class */\n    function () {\n      function ZoneDelegate(zone, parentDelegate, zoneSpec) {\n        this._taskCounts = {\n          'microTask': 0,\n          'macroTask': 0,\n          'eventTask': 0\n        };\n        this.zone = zone;\n        this._parentDelegate = parentDelegate;\n        this._forkZS = zoneSpec && (zoneSpec && zoneSpec.onFork ? zoneSpec : parentDelegate._forkZS);\n        this._forkDlgt = zoneSpec && (zoneSpec.onFork ? parentDelegate : parentDelegate._forkDlgt);\n        this._forkCurrZone = zoneSpec && (zoneSpec.onFork ? this.zone : parentDelegate._forkCurrZone);\n        this._interceptZS = zoneSpec && (zoneSpec.onIntercept ? zoneSpec : parentDelegate._interceptZS);\n        this._interceptDlgt = zoneSpec && (zoneSpec.onIntercept ? parentDelegate : parentDelegate._interceptDlgt);\n        this._interceptCurrZone = zoneSpec && (zoneSpec.onIntercept ? this.zone : parentDelegate._interceptCurrZone);\n        this._invokeZS = zoneSpec && (zoneSpec.onInvoke ? zoneSpec : parentDelegate._invokeZS);\n        this._invokeDlgt = zoneSpec && (zoneSpec.onInvoke ? parentDelegate : parentDelegate._invokeDlgt);\n        this._invokeCurrZone = zoneSpec && (zoneSpec.onInvoke ? this.zone : parentDelegate._invokeCurrZone);\n        this._handleErrorZS = zoneSpec && (zoneSpec.onHandleError ? zoneSpec : parentDelegate._handleErrorZS);\n        this._handleErrorDlgt = zoneSpec && (zoneSpec.onHandleError ? parentDelegate : parentDelegate._handleErrorDlgt);\n        this._handleErrorCurrZone = zoneSpec && (zoneSpec.onHandleError ? this.zone : parentDelegate._handleErrorCurrZone);\n        this._scheduleTaskZS = zoneSpec && (zoneSpec.onScheduleTask ? zoneSpec : parentDelegate._scheduleTaskZS);\n        this._scheduleTaskDlgt = zoneSpec && (zoneSpec.onScheduleTask ? parentDelegate : parentDelegate._scheduleTaskDlgt);\n        this._scheduleTaskCurrZone = zoneSpec && (zoneSpec.onScheduleTask ? this.zone : parentDelegate._scheduleTaskCurrZone);\n        this._invokeTaskZS = zoneSpec && (zoneSpec.onInvokeTask ? zoneSpec : parentDelegate._invokeTaskZS);\n        this._invokeTaskDlgt = zoneSpec && (zoneSpec.onInvokeTask ? parentDelegate : parentDelegate._invokeTaskDlgt);\n        this._invokeTaskCurrZone = zoneSpec && (zoneSpec.onInvokeTask ? this.zone : parentDelegate._invokeTaskCurrZone);\n        this._cancelTaskZS = zoneSpec && (zoneSpec.onCancelTask ? zoneSpec : parentDelegate._cancelTaskZS);\n        this._cancelTaskDlgt = zoneSpec && (zoneSpec.onCancelTask ? parentDelegate : parentDelegate._cancelTaskDlgt);\n        this._cancelTaskCurrZone = zoneSpec && (zoneSpec.onCancelTask ? this.zone : parentDelegate._cancelTaskCurrZone);\n        this._hasTaskZS = null;\n        this._hasTaskDlgt = null;\n        this._hasTaskDlgtOwner = null;\n        this._hasTaskCurrZone = null;\n        var zoneSpecHasTask = zoneSpec && zoneSpec.onHasTask;\n        var parentHasTask = parentDelegate && parentDelegate._hasTaskZS;\n\n        if (zoneSpecHasTask || parentHasTask) {\n          // If we need to report hasTask, than this ZS needs to do ref counting on tasks. In such\n          // a case all task related interceptors must go through this ZD. We can't short circuit it.\n          this._hasTaskZS = zoneSpecHasTask ? zoneSpec : DELEGATE_ZS;\n          this._hasTaskDlgt = parentDelegate;\n          this._hasTaskDlgtOwner = this;\n          this._hasTaskCurrZone = zone;\n\n          if (!zoneSpec.onScheduleTask) {\n            this._scheduleTaskZS = DELEGATE_ZS;\n            this._scheduleTaskDlgt = parentDelegate;\n            this._scheduleTaskCurrZone = this.zone;\n          }\n\n          if (!zoneSpec.onInvokeTask) {\n            this._invokeTaskZS = DELEGATE_ZS;\n            this._invokeTaskDlgt = parentDelegate;\n            this._invokeTaskCurrZone = this.zone;\n          }\n\n          if (!zoneSpec.onCancelTask) {\n            this._cancelTaskZS = DELEGATE_ZS;\n            this._cancelTaskDlgt = parentDelegate;\n            this._cancelTaskCurrZone = this.zone;\n          }\n        }\n      }\n\n      ZoneDelegate.prototype.fork = function (targetZone, zoneSpec) {\n        return this._forkZS ? this._forkZS.onFork(this._forkDlgt, this.zone, targetZone, zoneSpec) : new Zone(targetZone, zoneSpec);\n      };\n\n      ZoneDelegate.prototype.intercept = function (targetZone, callback, source) {\n        return this._interceptZS ? this._interceptZS.onIntercept(this._interceptDlgt, this._interceptCurrZone, targetZone, callback, source) : callback;\n      };\n\n      ZoneDelegate.prototype.invoke = function (targetZone, callback, applyThis, applyArgs, source) {\n        return this._invokeZS ? this._invokeZS.onInvoke(this._invokeDlgt, this._invokeCurrZone, targetZone, callback, applyThis, applyArgs, source) : callback.apply(applyThis, applyArgs);\n      };\n\n      ZoneDelegate.prototype.handleError = function (targetZone, error) {\n        return this._handleErrorZS ? this._handleErrorZS.onHandleError(this._handleErrorDlgt, this._handleErrorCurrZone, targetZone, error) : true;\n      };\n\n      ZoneDelegate.prototype.scheduleTask = function (targetZone, task) {\n        var returnTask = task;\n\n        if (this._scheduleTaskZS) {\n          if (this._hasTaskZS) {\n            returnTask._zoneDelegates.push(this._hasTaskDlgtOwner);\n          } // clang-format off\n\n\n          returnTask = this._scheduleTaskZS.onScheduleTask(this._scheduleTaskDlgt, this._scheduleTaskCurrZone, targetZone, task); // clang-format on\n\n          if (!returnTask) returnTask = task;\n        } else {\n          if (task.scheduleFn) {\n            task.scheduleFn(task);\n          } else if (task.type == microTask) {\n            scheduleMicroTask(task);\n          } else {\n            throw new Error('Task is missing scheduleFn.');\n          }\n        }\n\n        return returnTask;\n      };\n\n      ZoneDelegate.prototype.invokeTask = function (targetZone, task, applyThis, applyArgs) {\n        return this._invokeTaskZS ? this._invokeTaskZS.onInvokeTask(this._invokeTaskDlgt, this._invokeTaskCurrZone, targetZone, task, applyThis, applyArgs) : task.callback.apply(applyThis, applyArgs);\n      };\n\n      ZoneDelegate.prototype.cancelTask = function (targetZone, task) {\n        var value;\n\n        if (this._cancelTaskZS) {\n          value = this._cancelTaskZS.onCancelTask(this._cancelTaskDlgt, this._cancelTaskCurrZone, targetZone, task);\n        } else {\n          if (!task.cancelFn) {\n            throw Error('Task is not cancelable');\n          }\n\n          value = task.cancelFn(task);\n        }\n\n        return value;\n      };\n\n      ZoneDelegate.prototype.hasTask = function (targetZone, isEmpty) {\n        // hasTask should not throw error so other ZoneDelegate\n        // can still trigger hasTask callback\n        try {\n          this._hasTaskZS && this._hasTaskZS.onHasTask(this._hasTaskDlgt, this._hasTaskCurrZone, targetZone, isEmpty);\n        } catch (err) {\n          this.handleError(targetZone, err);\n        }\n      }; // tslint:disable-next-line:require-internal-with-underscore\n\n\n      ZoneDelegate.prototype._updateTaskCount = function (type, count) {\n        var counts = this._taskCounts;\n        var prev = counts[type];\n        var next = counts[type] = prev + count;\n\n        if (next < 0) {\n          throw new Error('More tasks executed then were scheduled.');\n        }\n\n        if (prev == 0 || next == 0) {\n          var isEmpty = {\n            microTask: counts['microTask'] > 0,\n            macroTask: counts['macroTask'] > 0,\n            eventTask: counts['eventTask'] > 0,\n            change: type\n          };\n          this.hasTask(this.zone, isEmpty);\n        }\n      };\n\n      return ZoneDelegate;\n    }();\n\n    var ZoneTask =\n    /** @class */\n    function () {\n      function ZoneTask(type, source, callback, options, scheduleFn, cancelFn) {\n        // tslint:disable-next-line:require-internal-with-underscore\n        this._zone = null;\n        this.runCount = 0; // tslint:disable-next-line:require-internal-with-underscore\n\n        this._zoneDelegates = null; // tslint:disable-next-line:require-internal-with-underscore\n\n        this._state = 'notScheduled';\n        this.type = type;\n        this.source = source;\n        this.data = options;\n        this.scheduleFn = scheduleFn;\n        this.cancelFn = cancelFn;\n\n        if (!callback) {\n          throw new Error('callback is not defined');\n        }\n\n        this.callback = callback;\n        var self = this; // TODO: @JiaLiPassion options should have interface\n\n        if (type === eventTask && options && options.useG) {\n          this.invoke = ZoneTask.invokeTask;\n        } else {\n          this.invoke = function () {\n            return ZoneTask.invokeTask.call(global, self, this, arguments);\n          };\n        }\n      }\n\n      ZoneTask.invokeTask = function (task, target, args) {\n        if (!task) {\n          task = this;\n        }\n\n        _numberOfNestedTaskFrames++;\n\n        try {\n          task.runCount++;\n          return task.zone.runTask(task, target, args);\n        } finally {\n          if (_numberOfNestedTaskFrames == 1) {\n            drainMicroTaskQueue();\n          }\n\n          _numberOfNestedTaskFrames--;\n        }\n      };\n\n      Object.defineProperty(ZoneTask.prototype, \"zone\", {\n        get: function get() {\n          return this._zone;\n        },\n        enumerable: false,\n        configurable: true\n      });\n      Object.defineProperty(ZoneTask.prototype, \"state\", {\n        get: function get() {\n          return this._state;\n        },\n        enumerable: false,\n        configurable: true\n      });\n\n      ZoneTask.prototype.cancelScheduleRequest = function () {\n        this._transitionTo(notScheduled, scheduling);\n      }; // tslint:disable-next-line:require-internal-with-underscore\n\n\n      ZoneTask.prototype._transitionTo = function (toState, fromState1, fromState2) {\n        if (this._state === fromState1 || this._state === fromState2) {\n          this._state = toState;\n\n          if (toState == notScheduled) {\n            this._zoneDelegates = null;\n          }\n        } else {\n          throw new Error(this.type + \" '\" + this.source + \"': can not transition to '\" + toState + \"', expecting state '\" + fromState1 + \"'\" + (fromState2 ? ' or \\'' + fromState2 + '\\'' : '') + \", was '\" + this._state + \"'.\");\n        }\n      };\n\n      ZoneTask.prototype.toString = function () {\n        if (this.data && typeof this.data.handleId !== 'undefined') {\n          return this.data.handleId.toString();\n        } else {\n          return Object.prototype.toString.call(this);\n        }\n      }; // add toJSON method to prevent cyclic error when\n      // call JSON.stringify(zoneTask)\n\n\n      ZoneTask.prototype.toJSON = function () {\n        return {\n          type: this.type,\n          state: this.state,\n          source: this.source,\n          zone: this.zone.name,\n          runCount: this.runCount\n        };\n      };\n\n      return ZoneTask;\n    }(); //////////////////////////////////////////////////////\n    //////////////////////////////////////////////////////\n    ///  MICROTASK QUEUE\n    //////////////////////////////////////////////////////\n    //////////////////////////////////////////////////////\n\n\n    var symbolSetTimeout = __symbol__('setTimeout');\n\n    var symbolPromise = __symbol__('Promise');\n\n    var symbolThen = __symbol__('then');\n\n    var _microTaskQueue = [];\n    var _isDrainingMicrotaskQueue = false;\n    var nativeMicroTaskQueuePromise;\n\n    function scheduleMicroTask(task) {\n      // if we are not running in any task, and there has not been anything scheduled\n      // we must bootstrap the initial task creation by manually scheduling the drain\n      if (_numberOfNestedTaskFrames === 0 && _microTaskQueue.length === 0) {\n        // We are not running in Task, so we need to kickstart the microtask queue.\n        if (!nativeMicroTaskQueuePromise) {\n          if (global[symbolPromise]) {\n            nativeMicroTaskQueuePromise = global[symbolPromise].resolve(0);\n          }\n        }\n\n        if (nativeMicroTaskQueuePromise) {\n          var nativeThen = nativeMicroTaskQueuePromise[symbolThen];\n\n          if (!nativeThen) {\n            // native Promise is not patchable, we need to use `then` directly\n            // issue 1078\n            nativeThen = nativeMicroTaskQueuePromise['then'];\n          }\n\n          nativeThen.call(nativeMicroTaskQueuePromise, drainMicroTaskQueue);\n        } else {\n          global[symbolSetTimeout](drainMicroTaskQueue, 0);\n        }\n      }\n\n      task && _microTaskQueue.push(task);\n    }\n\n    function drainMicroTaskQueue() {\n      if (!_isDrainingMicrotaskQueue) {\n        _isDrainingMicrotaskQueue = true;\n\n        while (_microTaskQueue.length) {\n          var queue = _microTaskQueue;\n          _microTaskQueue = [];\n\n          for (var i = 0; i < queue.length; i++) {\n            var task = queue[i];\n\n            try {\n              task.zone.runTask(task, null, null);\n            } catch (error) {\n              _api.onUnhandledError(error);\n            }\n          }\n        }\n\n        _api.microtaskDrainDone();\n\n        _isDrainingMicrotaskQueue = false;\n      }\n    } //////////////////////////////////////////////////////\n    //////////////////////////////////////////////////////\n    ///  BOOTSTRAP\n    //////////////////////////////////////////////////////\n    //////////////////////////////////////////////////////\n\n\n    var NO_ZONE = {\n      name: 'NO ZONE'\n    };\n    var notScheduled = 'notScheduled',\n        scheduling = 'scheduling',\n        scheduled = 'scheduled',\n        running = 'running',\n        canceling = 'canceling',\n        unknown = 'unknown';\n    var microTask = 'microTask',\n        macroTask = 'macroTask',\n        eventTask = 'eventTask';\n    var patches = {};\n    var _api = {\n      symbol: __symbol__,\n      currentZoneFrame: function currentZoneFrame() {\n        return _currentZoneFrame;\n      },\n      onUnhandledError: noop,\n      microtaskDrainDone: noop,\n      scheduleMicroTask: scheduleMicroTask,\n      showUncaughtError: function showUncaughtError() {\n        return !Zone[__symbol__('ignoreConsoleErrorUncaughtError')];\n      },\n      patchEventTarget: function patchEventTarget() {\n        return [];\n      },\n      patchOnProperties: noop,\n      patchMethod: function patchMethod() {\n        return noop;\n      },\n      bindArguments: function bindArguments() {\n        return [];\n      },\n      patchThen: function patchThen() {\n        return noop;\n      },\n      patchMacroTask: function patchMacroTask() {\n        return noop;\n      },\n      patchEventPrototype: function patchEventPrototype() {\n        return noop;\n      },\n      isIEOrEdge: function isIEOrEdge() {\n        return false;\n      },\n      getGlobalObjects: function getGlobalObjects() {\n        return undefined;\n      },\n      ObjectDefineProperty: function ObjectDefineProperty() {\n        return noop;\n      },\n      ObjectGetOwnPropertyDescriptor: function ObjectGetOwnPropertyDescriptor() {\n        return undefined;\n      },\n      ObjectCreate: function ObjectCreate() {\n        return undefined;\n      },\n      ArraySlice: function ArraySlice() {\n        return [];\n      },\n      patchClass: function patchClass() {\n        return noop;\n      },\n      wrapWithCurrentZone: function wrapWithCurrentZone() {\n        return noop;\n      },\n      filterProperties: function filterProperties() {\n        return [];\n      },\n      attachOriginToPatched: function attachOriginToPatched() {\n        return noop;\n      },\n      _redefineProperty: function _redefineProperty() {\n        return noop;\n      },\n      patchCallbacks: function patchCallbacks() {\n        return noop;\n      }\n    };\n    var _currentZoneFrame = {\n      parent: null,\n      zone: new Zone(null, null)\n    };\n    var _currentTask = null;\n    var _numberOfNestedTaskFrames = 0;\n\n    function noop() {}\n\n    performanceMeasure('Zone', 'Zone');\n    return global['Zone'] = Zone;\n  }(typeof window !== 'undefined' && window || typeof self !== 'undefined' && self || global);\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n\n  /**\n   * Suppress closure compiler errors about unknown 'Zone' variable\n   * @fileoverview\n   * @suppress {undefinedVars,globalThis,missingRequire}\n   */\n  /// <reference types=\"node\"/>\n  // issue #989, to reduce bundle size, use short name\n\n  /** Object.getOwnPropertyDescriptor */\n\n\n  var ObjectGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\n  /** Object.defineProperty */\n\n  var ObjectDefineProperty = Object.defineProperty;\n  /** Object.getPrototypeOf */\n\n  var ObjectGetPrototypeOf = Object.getPrototypeOf;\n  /** Object.create */\n\n  var ObjectCreate = Object.create;\n  /** Array.prototype.slice */\n\n  var ArraySlice = Array.prototype.slice;\n  /** addEventListener string const */\n\n  var ADD_EVENT_LISTENER_STR = 'addEventListener';\n  /** removeEventListener string const */\n\n  var REMOVE_EVENT_LISTENER_STR = 'removeEventListener';\n  /** zoneSymbol addEventListener */\n\n  var ZONE_SYMBOL_ADD_EVENT_LISTENER = Zone.__symbol__(ADD_EVENT_LISTENER_STR);\n  /** zoneSymbol removeEventListener */\n\n\n  var ZONE_SYMBOL_REMOVE_EVENT_LISTENER = Zone.__symbol__(REMOVE_EVENT_LISTENER_STR);\n  /** true string const */\n\n\n  var TRUE_STR = 'true';\n  /** false string const */\n\n  var FALSE_STR = 'false';\n  /** Zone symbol prefix string const. */\n\n  var ZONE_SYMBOL_PREFIX = Zone.__symbol__('');\n\n  function wrapWithCurrentZone(callback, source) {\n    return Zone.current.wrap(callback, source);\n  }\n\n  function scheduleMacroTaskWithCurrentZone(source, callback, data, customSchedule, customCancel) {\n    return Zone.current.scheduleMacroTask(source, callback, data, customSchedule, customCancel);\n  }\n\n  var zoneSymbol = Zone.__symbol__;\n  var isWindowExists = typeof window !== 'undefined';\n  var internalWindow = isWindowExists ? window : undefined;\n\n  var _global = isWindowExists && internalWindow || (typeof self === \"undefined\" ? \"undefined\" : _typeof(self)) === 'object' && self || global;\n\n  var REMOVE_ATTRIBUTE = 'removeAttribute';\n  var NULL_ON_PROP_VALUE = [null];\n\n  function bindArguments(args, source) {\n    for (var i = args.length - 1; i >= 0; i--) {\n      if (typeof args[i] === 'function') {\n        args[i] = wrapWithCurrentZone(args[i], source + '_' + i);\n      }\n    }\n\n    return args;\n  }\n\n  function patchPrototype(prototype, fnNames) {\n    var source = prototype.constructor['name'];\n\n    var _loop_1 = function _loop_1(i) {\n      var name_1 = fnNames[i];\n      var delegate = prototype[name_1];\n\n      if (delegate) {\n        var prototypeDesc = ObjectGetOwnPropertyDescriptor(prototype, name_1);\n\n        if (!isPropertyWritable(prototypeDesc)) {\n          return \"continue\";\n        }\n\n        prototype[name_1] = function (delegate) {\n          var patched = function patched() {\n            return delegate.apply(this, bindArguments(arguments, source + '.' + name_1));\n          };\n\n          attachOriginToPatched(patched, delegate);\n          return patched;\n        }(delegate);\n      }\n    };\n\n    for (var i = 0; i < fnNames.length; i++) {\n      _loop_1(i);\n    }\n  }\n\n  function isPropertyWritable(propertyDesc) {\n    if (!propertyDesc) {\n      return true;\n    }\n\n    if (propertyDesc.writable === false) {\n      return false;\n    }\n\n    return !(typeof propertyDesc.get === 'function' && typeof propertyDesc.set === 'undefined');\n  }\n\n  var isWebWorker = typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope; // Make sure to access `process` through `_global` so that WebPack does not accidentally browserify\n  // this code.\n\n  var isNode = !('nw' in _global) && typeof _global.process !== 'undefined' && {}.toString.call(_global.process) === '[object process]';\n  var isBrowser = !isNode && !isWebWorker && !!(isWindowExists && internalWindow['HTMLElement']); // we are in electron of nw, so we are both browser and nodejs\n  // Make sure to access `process` through `_global` so that WebPack does not accidentally browserify\n  // this code.\n\n  var isMix = typeof _global.process !== 'undefined' && {}.toString.call(_global.process) === '[object process]' && !isWebWorker && !!(isWindowExists && internalWindow['HTMLElement']);\n  var zoneSymbolEventNames = {};\n\n  var wrapFn = function wrapFn(event) {\n    // https://github.com/angular/zone.js/issues/911, in IE, sometimes\n    // event will be undefined, so we need to use window.event\n    event = event || _global.event;\n\n    if (!event) {\n      return;\n    }\n\n    var eventNameSymbol = zoneSymbolEventNames[event.type];\n\n    if (!eventNameSymbol) {\n      eventNameSymbol = zoneSymbolEventNames[event.type] = zoneSymbol('ON_PROPERTY' + event.type);\n    }\n\n    var target = this || event.target || _global;\n    var listener = target[eventNameSymbol];\n    var result;\n\n    if (isBrowser && target === internalWindow && event.type === 'error') {\n      // window.onerror have different signiture\n      // https://developer.mozilla.org/en-US/docs/Web/API/GlobalEventHandlers/onerror#window.onerror\n      // and onerror callback will prevent default when callback return true\n      var errorEvent = event;\n      result = listener && listener.call(this, errorEvent.message, errorEvent.filename, errorEvent.lineno, errorEvent.colno, errorEvent.error);\n\n      if (result === true) {\n        event.preventDefault();\n      }\n    } else {\n      result = listener && listener.apply(this, arguments);\n\n      if (result != undefined && !result) {\n        event.preventDefault();\n      }\n    }\n\n    return result;\n  };\n\n  function patchProperty(obj, prop, prototype) {\n    var desc = ObjectGetOwnPropertyDescriptor(obj, prop);\n\n    if (!desc && prototype) {\n      // when patch window object, use prototype to check prop exist or not\n      var prototypeDesc = ObjectGetOwnPropertyDescriptor(prototype, prop);\n\n      if (prototypeDesc) {\n        desc = {\n          enumerable: true,\n          configurable: true\n        };\n      }\n    } // if the descriptor not exists or is not configurable\n    // just return\n\n\n    if (!desc || !desc.configurable) {\n      return;\n    }\n\n    var onPropPatchedSymbol = zoneSymbol('on' + prop + 'patched');\n\n    if (obj.hasOwnProperty(onPropPatchedSymbol) && obj[onPropPatchedSymbol]) {\n      return;\n    } // A property descriptor cannot have getter/setter and be writable\n    // deleting the writable and value properties avoids this error:\n    //\n    // TypeError: property descriptors must not specify a value or be writable when a\n    // getter or setter has been specified\n\n\n    delete desc.writable;\n    delete desc.value;\n    var originalDescGet = desc.get;\n    var originalDescSet = desc.set; // substr(2) cuz 'onclick' -> 'click', etc\n\n    var eventName = prop.substr(2);\n    var eventNameSymbol = zoneSymbolEventNames[eventName];\n\n    if (!eventNameSymbol) {\n      eventNameSymbol = zoneSymbolEventNames[eventName] = zoneSymbol('ON_PROPERTY' + eventName);\n    }\n\n    desc.set = function (newValue) {\n      // in some of windows's onproperty callback, this is undefined\n      // so we need to check it\n      var target = this;\n\n      if (!target && obj === _global) {\n        target = _global;\n      }\n\n      if (!target) {\n        return;\n      }\n\n      var previousValue = target[eventNameSymbol];\n\n      if (previousValue) {\n        target.removeEventListener(eventName, wrapFn);\n      } // issue #978, when onload handler was added before loading zone.js\n      // we should remove it with originalDescSet\n\n\n      if (originalDescSet) {\n        originalDescSet.apply(target, NULL_ON_PROP_VALUE);\n      }\n\n      if (typeof newValue === 'function') {\n        target[eventNameSymbol] = newValue;\n        target.addEventListener(eventName, wrapFn, false);\n      } else {\n        target[eventNameSymbol] = null;\n      }\n    }; // The getter would return undefined for unassigned properties but the default value of an\n    // unassigned property is null\n\n\n    desc.get = function () {\n      // in some of windows's onproperty callback, this is undefined\n      // so we need to check it\n      var target = this;\n\n      if (!target && obj === _global) {\n        target = _global;\n      }\n\n      if (!target) {\n        return null;\n      }\n\n      var listener = target[eventNameSymbol];\n\n      if (listener) {\n        return listener;\n      } else if (originalDescGet) {\n        // result will be null when use inline event attribute,\n        // such as <button onclick=\"func();\">OK</button>\n        // because the onclick function is internal raw uncompiled handler\n        // the onclick will be evaluated when first time event was triggered or\n        // the property is accessed, https://github.com/angular/zone.js/issues/525\n        // so we should use original native get to retrieve the handler\n        var value = originalDescGet && originalDescGet.call(this);\n\n        if (value) {\n          desc.set.call(this, value);\n\n          if (typeof target[REMOVE_ATTRIBUTE] === 'function') {\n            target.removeAttribute(prop);\n          }\n\n          return value;\n        }\n      }\n\n      return null;\n    };\n\n    ObjectDefineProperty(obj, prop, desc);\n    obj[onPropPatchedSymbol] = true;\n  }\n\n  function patchOnProperties(obj, properties, prototype) {\n    if (properties) {\n      for (var i = 0; i < properties.length; i++) {\n        patchProperty(obj, 'on' + properties[i], prototype);\n      }\n    } else {\n      var onProperties = [];\n\n      for (var prop in obj) {\n        if (prop.substr(0, 2) == 'on') {\n          onProperties.push(prop);\n        }\n      }\n\n      for (var j = 0; j < onProperties.length; j++) {\n        patchProperty(obj, onProperties[j], prototype);\n      }\n    }\n  }\n\n  var originalInstanceKey = zoneSymbol('originalInstance'); // wrap some native API on `window`\n\n  function patchClass(className) {\n    var OriginalClass = _global[className];\n    if (!OriginalClass) return; // keep original class in global\n\n    _global[zoneSymbol(className)] = OriginalClass;\n\n    _global[className] = function () {\n      var a = bindArguments(arguments, className);\n\n      switch (a.length) {\n        case 0:\n          this[originalInstanceKey] = new OriginalClass();\n          break;\n\n        case 1:\n          this[originalInstanceKey] = new OriginalClass(a[0]);\n          break;\n\n        case 2:\n          this[originalInstanceKey] = new OriginalClass(a[0], a[1]);\n          break;\n\n        case 3:\n          this[originalInstanceKey] = new OriginalClass(a[0], a[1], a[2]);\n          break;\n\n        case 4:\n          this[originalInstanceKey] = new OriginalClass(a[0], a[1], a[2], a[3]);\n          break;\n\n        default:\n          throw new Error('Arg list too long.');\n      }\n    }; // attach original delegate to patched function\n\n\n    attachOriginToPatched(_global[className], OriginalClass);\n    var instance = new OriginalClass(function () {});\n    var prop;\n\n    for (prop in instance) {\n      // https://bugs.webkit.org/show_bug.cgi?id=44721\n      if (className === 'XMLHttpRequest' && prop === 'responseBlob') continue;\n\n      (function (prop) {\n        if (typeof instance[prop] === 'function') {\n          _global[className].prototype[prop] = function () {\n            return this[originalInstanceKey][prop].apply(this[originalInstanceKey], arguments);\n          };\n        } else {\n          ObjectDefineProperty(_global[className].prototype, prop, {\n            set: function set(fn) {\n              if (typeof fn === 'function') {\n                this[originalInstanceKey][prop] = wrapWithCurrentZone(fn, className + '.' + prop); // keep callback in wrapped function so we can\n                // use it in Function.prototype.toString to return\n                // the native one.\n\n                attachOriginToPatched(this[originalInstanceKey][prop], fn);\n              } else {\n                this[originalInstanceKey][prop] = fn;\n              }\n            },\n            get: function get() {\n              return this[originalInstanceKey][prop];\n            }\n          });\n        }\n      })(prop);\n    }\n\n    for (prop in OriginalClass) {\n      if (prop !== 'prototype' && OriginalClass.hasOwnProperty(prop)) {\n        _global[className][prop] = OriginalClass[prop];\n      }\n    }\n  }\n\n  function patchMethod(target, name, patchFn) {\n    var proto = target;\n\n    while (proto && !proto.hasOwnProperty(name)) {\n      proto = ObjectGetPrototypeOf(proto);\n    }\n\n    if (!proto && target[name]) {\n      // somehow we did not find it, but we can see it. This happens on IE for Window properties.\n      proto = target;\n    }\n\n    var delegateName = zoneSymbol(name);\n    var delegate = null;\n\n    if (proto && !(delegate = proto[delegateName])) {\n      delegate = proto[delegateName] = proto[name]; // check whether proto[name] is writable\n      // some property is readonly in safari, such as HtmlCanvasElement.prototype.toBlob\n\n      var desc = proto && ObjectGetOwnPropertyDescriptor(proto, name);\n\n      if (isPropertyWritable(desc)) {\n        var patchDelegate_1 = patchFn(delegate, delegateName, name);\n\n        proto[name] = function () {\n          return patchDelegate_1(this, arguments);\n        };\n\n        attachOriginToPatched(proto[name], delegate);\n      }\n    }\n\n    return delegate;\n  } // TODO: @JiaLiPassion, support cancel task later if necessary\n\n\n  function patchMacroTask(obj, funcName, metaCreator) {\n    var setNative = null;\n\n    function scheduleTask(task) {\n      var data = task.data;\n\n      data.args[data.cbIdx] = function () {\n        task.invoke.apply(this, arguments);\n      };\n\n      setNative.apply(data.target, data.args);\n      return task;\n    }\n\n    setNative = patchMethod(obj, funcName, function (delegate) {\n      return function (self, args) {\n        var meta = metaCreator(self, args);\n\n        if (meta.cbIdx >= 0 && typeof args[meta.cbIdx] === 'function') {\n          return scheduleMacroTaskWithCurrentZone(meta.name, args[meta.cbIdx], meta, scheduleTask);\n        } else {\n          // cause an error by calling it directly.\n          return delegate.apply(self, args);\n        }\n      };\n    });\n  }\n\n  function attachOriginToPatched(patched, original) {\n    patched[zoneSymbol('OriginalDelegate')] = original;\n  }\n\n  var isDetectedIEOrEdge = false;\n  var ieOrEdge = false;\n\n  function isIE() {\n    try {\n      var ua = internalWindow.navigator.userAgent;\n\n      if (ua.indexOf('MSIE ') !== -1 || ua.indexOf('Trident/') !== -1) {\n        return true;\n      }\n    } catch (error) {}\n\n    return false;\n  }\n\n  function isIEOrEdge() {\n    if (isDetectedIEOrEdge) {\n      return ieOrEdge;\n    }\n\n    isDetectedIEOrEdge = true;\n\n    try {\n      var ua = internalWindow.navigator.userAgent;\n\n      if (ua.indexOf('MSIE ') !== -1 || ua.indexOf('Trident/') !== -1 || ua.indexOf('Edge/') !== -1) {\n        ieOrEdge = true;\n      }\n    } catch (error) {}\n\n    return ieOrEdge;\n  }\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n\n\n  Zone.__load_patch('ZoneAwarePromise', function (global, Zone, api) {\n    var ObjectGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\n    var ObjectDefineProperty = Object.defineProperty;\n\n    function readableObjectToString(obj) {\n      if (obj && obj.toString === Object.prototype.toString) {\n        var className = obj.constructor && obj.constructor.name;\n        return (className ? className : '') + ': ' + JSON.stringify(obj);\n      }\n\n      return obj ? obj.toString() : Object.prototype.toString.call(obj);\n    }\n\n    var __symbol__ = api.symbol;\n    var _uncaughtPromiseErrors = [];\n    var isDisableWrappingUncaughtPromiseRejection = global[__symbol__('DISABLE_WRAPPING_UNCAUGHT_PROMISE_REJECTION')] === true;\n\n    var symbolPromise = __symbol__('Promise');\n\n    var symbolThen = __symbol__('then');\n\n    var creationTrace = '__creationTrace__';\n\n    api.onUnhandledError = function (e) {\n      if (api.showUncaughtError()) {\n        var rejection = e && e.rejection;\n\n        if (rejection) {\n          console.error('Unhandled Promise rejection:', rejection instanceof Error ? rejection.message : rejection, '; Zone:', e.zone.name, '; Task:', e.task && e.task.source, '; Value:', rejection, rejection instanceof Error ? rejection.stack : undefined);\n        } else {\n          console.error(e);\n        }\n      }\n    };\n\n    api.microtaskDrainDone = function () {\n      var _loop_2 = function _loop_2() {\n        var uncaughtPromiseError = _uncaughtPromiseErrors.shift();\n\n        try {\n          uncaughtPromiseError.zone.runGuarded(function () {\n            if (uncaughtPromiseError.throwOriginal) {\n              throw uncaughtPromiseError.rejection;\n            }\n\n            throw uncaughtPromiseError;\n          });\n        } catch (error) {\n          handleUnhandledRejection(error);\n        }\n      };\n\n      while (_uncaughtPromiseErrors.length) {\n        _loop_2();\n      }\n    };\n\n    var UNHANDLED_PROMISE_REJECTION_HANDLER_SYMBOL = __symbol__('unhandledPromiseRejectionHandler');\n\n    function handleUnhandledRejection(e) {\n      api.onUnhandledError(e);\n\n      try {\n        var handler = Zone[UNHANDLED_PROMISE_REJECTION_HANDLER_SYMBOL];\n\n        if (typeof handler === 'function') {\n          handler.call(this, e);\n        }\n      } catch (err) {}\n    }\n\n    function isThenable(value) {\n      return value && value.then;\n    }\n\n    function forwardResolution(value) {\n      return value;\n    }\n\n    function forwardRejection(rejection) {\n      return ZoneAwarePromise.reject(rejection);\n    }\n\n    var symbolState = __symbol__('state');\n\n    var symbolValue = __symbol__('value');\n\n    var symbolFinally = __symbol__('finally');\n\n    var symbolParentPromiseValue = __symbol__('parentPromiseValue');\n\n    var symbolParentPromiseState = __symbol__('parentPromiseState');\n\n    var source = 'Promise.then';\n    var UNRESOLVED = null;\n    var RESOLVED = true;\n    var REJECTED = false;\n    var REJECTED_NO_CATCH = 0;\n\n    function makeResolver(promise, state) {\n      return function (v) {\n        try {\n          resolvePromise(promise, state, v);\n        } catch (err) {\n          resolvePromise(promise, false, err);\n        } // Do not return value or you will break the Promise spec.\n\n      };\n    }\n\n    var once = function once() {\n      var wasCalled = false;\n      return function wrapper(wrappedFunction) {\n        return function () {\n          if (wasCalled) {\n            return;\n          }\n\n          wasCalled = true;\n          wrappedFunction.apply(null, arguments);\n        };\n      };\n    };\n\n    var TYPE_ERROR = 'Promise resolved with itself';\n\n    var CURRENT_TASK_TRACE_SYMBOL = __symbol__('currentTaskTrace'); // Promise Resolution\n\n\n    function resolvePromise(promise, state, value) {\n      var onceWrapper = once();\n\n      if (promise === value) {\n        throw new TypeError(TYPE_ERROR);\n      }\n\n      if (promise[symbolState] === UNRESOLVED) {\n        // should only get value.then once based on promise spec.\n        var then = null;\n\n        try {\n          if (_typeof(value) === 'object' || typeof value === 'function') {\n            then = value && value.then;\n          }\n        } catch (err) {\n          onceWrapper(function () {\n            resolvePromise(promise, false, err);\n          })();\n          return promise;\n        } // if (value instanceof ZoneAwarePromise) {\n\n\n        if (state !== REJECTED && value instanceof ZoneAwarePromise && value.hasOwnProperty(symbolState) && value.hasOwnProperty(symbolValue) && value[symbolState] !== UNRESOLVED) {\n          clearRejectedNoCatch(value);\n          resolvePromise(promise, value[symbolState], value[symbolValue]);\n        } else if (state !== REJECTED && typeof then === 'function') {\n          try {\n            then.call(value, onceWrapper(makeResolver(promise, state)), onceWrapper(makeResolver(promise, false)));\n          } catch (err) {\n            onceWrapper(function () {\n              resolvePromise(promise, false, err);\n            })();\n          }\n        } else {\n          promise[symbolState] = state;\n          var queue = promise[symbolValue];\n          promise[symbolValue] = value;\n\n          if (promise[symbolFinally] === symbolFinally) {\n            // the promise is generated by Promise.prototype.finally\n            if (state === RESOLVED) {\n              // the state is resolved, should ignore the value\n              // and use parent promise value\n              promise[symbolState] = promise[symbolParentPromiseState];\n              promise[symbolValue] = promise[symbolParentPromiseValue];\n            }\n          } // record task information in value when error occurs, so we can\n          // do some additional work such as render longStackTrace\n\n\n          if (state === REJECTED && value instanceof Error) {\n            // check if longStackTraceZone is here\n            var trace = Zone.currentTask && Zone.currentTask.data && Zone.currentTask.data[creationTrace];\n\n            if (trace) {\n              // only keep the long stack trace into error when in longStackTraceZone\n              ObjectDefineProperty(value, CURRENT_TASK_TRACE_SYMBOL, {\n                configurable: true,\n                enumerable: false,\n                writable: true,\n                value: trace\n              });\n            }\n          }\n\n          for (var i = 0; i < queue.length;) {\n            scheduleResolveOrReject(promise, queue[i++], queue[i++], queue[i++], queue[i++]);\n          }\n\n          if (queue.length == 0 && state == REJECTED) {\n            promise[symbolState] = REJECTED_NO_CATCH;\n            var uncaughtPromiseError = value;\n\n            try {\n              // Here we throws a new Error to print more readable error log\n              // and if the value is not an error, zone.js builds an `Error`\n              // Object here to attach the stack information.\n              throw new Error('Uncaught (in promise): ' + readableObjectToString(value) + (value && value.stack ? '\\n' + value.stack : ''));\n            } catch (err) {\n              uncaughtPromiseError = err;\n            }\n\n            if (isDisableWrappingUncaughtPromiseRejection) {\n              // If disable wrapping uncaught promise reject\n              // use the value instead of wrapping it.\n              uncaughtPromiseError.throwOriginal = true;\n            }\n\n            uncaughtPromiseError.rejection = value;\n            uncaughtPromiseError.promise = promise;\n            uncaughtPromiseError.zone = Zone.current;\n            uncaughtPromiseError.task = Zone.currentTask;\n\n            _uncaughtPromiseErrors.push(uncaughtPromiseError);\n\n            api.scheduleMicroTask(); // to make sure that it is running\n          }\n        }\n      } // Resolving an already resolved promise is a noop.\n\n\n      return promise;\n    }\n\n    var REJECTION_HANDLED_HANDLER = __symbol__('rejectionHandledHandler');\n\n    function clearRejectedNoCatch(promise) {\n      if (promise[symbolState] === REJECTED_NO_CATCH) {\n        // if the promise is rejected no catch status\n        // and queue.length > 0, means there is a error handler\n        // here to handle the rejected promise, we should trigger\n        // windows.rejectionhandled eventHandler or nodejs rejectionHandled\n        // eventHandler\n        try {\n          var handler = Zone[REJECTION_HANDLED_HANDLER];\n\n          if (handler && typeof handler === 'function') {\n            handler.call(this, {\n              rejection: promise[symbolValue],\n              promise: promise\n            });\n          }\n        } catch (err) {}\n\n        promise[symbolState] = REJECTED;\n\n        for (var i = 0; i < _uncaughtPromiseErrors.length; i++) {\n          if (promise === _uncaughtPromiseErrors[i].promise) {\n            _uncaughtPromiseErrors.splice(i, 1);\n          }\n        }\n      }\n    }\n\n    function scheduleResolveOrReject(promise, zone, chainPromise, onFulfilled, onRejected) {\n      clearRejectedNoCatch(promise);\n      var promiseState = promise[symbolState];\n      var delegate = promiseState ? typeof onFulfilled === 'function' ? onFulfilled : forwardResolution : typeof onRejected === 'function' ? onRejected : forwardRejection;\n      zone.scheduleMicroTask(source, function () {\n        try {\n          var parentPromiseValue = promise[symbolValue];\n          var isFinallyPromise = !!chainPromise && symbolFinally === chainPromise[symbolFinally];\n\n          if (isFinallyPromise) {\n            // if the promise is generated from finally call, keep parent promise's state and value\n            chainPromise[symbolParentPromiseValue] = parentPromiseValue;\n            chainPromise[symbolParentPromiseState] = promiseState;\n          } // should not pass value to finally callback\n\n\n          var value = zone.run(delegate, undefined, isFinallyPromise && delegate !== forwardRejection && delegate !== forwardResolution ? [] : [parentPromiseValue]);\n          resolvePromise(chainPromise, true, value);\n        } catch (error) {\n          // if error occurs, should always return this error\n          resolvePromise(chainPromise, false, error);\n        }\n      }, chainPromise);\n    }\n\n    var ZONE_AWARE_PROMISE_TO_STRING = 'function ZoneAwarePromise() { [native code] }';\n\n    var noop = function noop() {};\n\n    var ZoneAwarePromise =\n    /** @class */\n    function () {\n      function ZoneAwarePromise(executor) {\n        var promise = this;\n\n        if (!(promise instanceof ZoneAwarePromise)) {\n          throw new Error('Must be an instanceof Promise.');\n        }\n\n        promise[symbolState] = UNRESOLVED;\n        promise[symbolValue] = []; // queue;\n\n        try {\n          executor && executor(makeResolver(promise, RESOLVED), makeResolver(promise, REJECTED));\n        } catch (error) {\n          resolvePromise(promise, false, error);\n        }\n      }\n\n      ZoneAwarePromise.toString = function () {\n        return ZONE_AWARE_PROMISE_TO_STRING;\n      };\n\n      ZoneAwarePromise.resolve = function (value) {\n        return resolvePromise(new this(null), RESOLVED, value);\n      };\n\n      ZoneAwarePromise.reject = function (error) {\n        return resolvePromise(new this(null), REJECTED, error);\n      };\n\n      ZoneAwarePromise.race = function (values) {\n        var resolve;\n        var reject;\n        var promise = new this(function (res, rej) {\n          resolve = res;\n          reject = rej;\n        });\n\n        function onResolve(value) {\n          resolve(value);\n        }\n\n        function onReject(error) {\n          reject(error);\n        }\n\n        for (var _i = 0, values_1 = values; _i < values_1.length; _i++) {\n          var value = values_1[_i];\n\n          if (!isThenable(value)) {\n            value = this.resolve(value);\n          }\n\n          value.then(onResolve, onReject);\n        }\n\n        return promise;\n      };\n\n      ZoneAwarePromise.all = function (values) {\n        return ZoneAwarePromise.allWithCallback(values);\n      };\n\n      ZoneAwarePromise.allSettled = function (values) {\n        var P = this && this.prototype instanceof ZoneAwarePromise ? this : ZoneAwarePromise;\n        return P.allWithCallback(values, {\n          thenCallback: function thenCallback(value) {\n            return {\n              status: 'fulfilled',\n              value: value\n            };\n          },\n          errorCallback: function errorCallback(err) {\n            return {\n              status: 'rejected',\n              reason: err\n            };\n          }\n        });\n      };\n\n      ZoneAwarePromise.allWithCallback = function (values, callback) {\n        var resolve;\n        var reject;\n        var promise = new this(function (res, rej) {\n          resolve = res;\n          reject = rej;\n        }); // Start at 2 to prevent prematurely resolving if .then is called immediately.\n\n        var unresolvedCount = 2;\n        var valueIndex = 0;\n        var resolvedValues = [];\n\n        var _loop_3 = function _loop_3(value) {\n          if (!isThenable(value)) {\n            value = this_1.resolve(value);\n          }\n\n          var curValueIndex = valueIndex;\n\n          try {\n            value.then(function (value) {\n              resolvedValues[curValueIndex] = callback ? callback.thenCallback(value) : value;\n              unresolvedCount--;\n\n              if (unresolvedCount === 0) {\n                resolve(resolvedValues);\n              }\n            }, function (err) {\n              if (!callback) {\n                reject(err);\n              } else {\n                resolvedValues[curValueIndex] = callback.errorCallback(err);\n                unresolvedCount--;\n\n                if (unresolvedCount === 0) {\n                  resolve(resolvedValues);\n                }\n              }\n            });\n          } catch (thenErr) {\n            reject(thenErr);\n          }\n\n          unresolvedCount++;\n          valueIndex++;\n        };\n\n        var this_1 = this;\n\n        for (var _i = 0, values_2 = values; _i < values_2.length; _i++) {\n          var value = values_2[_i];\n\n          _loop_3(value);\n        } // Make the unresolvedCount zero-based again.\n\n\n        unresolvedCount -= 2;\n\n        if (unresolvedCount === 0) {\n          resolve(resolvedValues);\n        }\n\n        return promise;\n      };\n\n      Object.defineProperty(ZoneAwarePromise.prototype, Symbol.toStringTag, {\n        get: function get() {\n          return 'Promise';\n        },\n        enumerable: false,\n        configurable: true\n      });\n      Object.defineProperty(ZoneAwarePromise.prototype, Symbol.species, {\n        get: function get() {\n          return ZoneAwarePromise;\n        },\n        enumerable: false,\n        configurable: true\n      });\n\n      ZoneAwarePromise.prototype.then = function (onFulfilled, onRejected) {\n        var C = this.constructor[Symbol.species];\n\n        if (!C || typeof C !== 'function') {\n          C = this.constructor || ZoneAwarePromise;\n        }\n\n        var chainPromise = new C(noop);\n        var zone = Zone.current;\n\n        if (this[symbolState] == UNRESOLVED) {\n          this[symbolValue].push(zone, chainPromise, onFulfilled, onRejected);\n        } else {\n          scheduleResolveOrReject(this, zone, chainPromise, onFulfilled, onRejected);\n        }\n\n        return chainPromise;\n      };\n\n      ZoneAwarePromise.prototype.catch = function (onRejected) {\n        return this.then(null, onRejected);\n      };\n\n      ZoneAwarePromise.prototype.finally = function (onFinally) {\n        var C = this.constructor[Symbol.species];\n\n        if (!C || typeof C !== 'function') {\n          C = ZoneAwarePromise;\n        }\n\n        var chainPromise = new C(noop);\n        chainPromise[symbolFinally] = symbolFinally;\n        var zone = Zone.current;\n\n        if (this[symbolState] == UNRESOLVED) {\n          this[symbolValue].push(zone, chainPromise, onFinally, onFinally);\n        } else {\n          scheduleResolveOrReject(this, zone, chainPromise, onFinally, onFinally);\n        }\n\n        return chainPromise;\n      };\n\n      return ZoneAwarePromise;\n    }(); // Protect against aggressive optimizers dropping seemingly unused properties.\n    // E.g. Closure Compiler in advanced mode.\n\n\n    ZoneAwarePromise['resolve'] = ZoneAwarePromise.resolve;\n    ZoneAwarePromise['reject'] = ZoneAwarePromise.reject;\n    ZoneAwarePromise['race'] = ZoneAwarePromise.race;\n    ZoneAwarePromise['all'] = ZoneAwarePromise.all;\n    var NativePromise = global[symbolPromise] = global['Promise'];\n    global['Promise'] = ZoneAwarePromise;\n\n    var symbolThenPatched = __symbol__('thenPatched');\n\n    function patchThen(Ctor) {\n      var proto = Ctor.prototype;\n      var prop = ObjectGetOwnPropertyDescriptor(proto, 'then');\n\n      if (prop && (prop.writable === false || !prop.configurable)) {\n        // check Ctor.prototype.then propertyDescriptor is writable or not\n        // in meteor env, writable is false, we should ignore such case\n        return;\n      }\n\n      var originalThen = proto.then; // Keep a reference to the original method.\n\n      proto[symbolThen] = originalThen;\n\n      Ctor.prototype.then = function (onResolve, onReject) {\n        var _this = this;\n\n        var wrapped = new ZoneAwarePromise(function (resolve, reject) {\n          originalThen.call(_this, resolve, reject);\n        });\n        return wrapped.then(onResolve, onReject);\n      };\n\n      Ctor[symbolThenPatched] = true;\n    }\n\n    api.patchThen = patchThen;\n\n    function zoneify(fn) {\n      return function (self, args) {\n        var resultPromise = fn.apply(self, args);\n\n        if (resultPromise instanceof ZoneAwarePromise) {\n          return resultPromise;\n        }\n\n        var ctor = resultPromise.constructor;\n\n        if (!ctor[symbolThenPatched]) {\n          patchThen(ctor);\n        }\n\n        return resultPromise;\n      };\n    }\n\n    if (NativePromise) {\n      patchThen(NativePromise);\n      patchMethod(global, 'fetch', function (delegate) {\n        return zoneify(delegate);\n      });\n    } // This is not part of public API, but it is useful for tests, so we expose it.\n\n\n    Promise[Zone.__symbol__('uncaughtPromiseErrors')] = _uncaughtPromiseErrors;\n    return ZoneAwarePromise;\n  });\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n  // override Function.prototype.toString to make zone.js patched function\n  // look like native function\n\n\n  Zone.__load_patch('toString', function (global) {\n    // patch Func.prototype.toString to let them look like native\n    var originalFunctionToString = Function.prototype.toString;\n    var ORIGINAL_DELEGATE_SYMBOL = zoneSymbol('OriginalDelegate');\n    var PROMISE_SYMBOL = zoneSymbol('Promise');\n    var ERROR_SYMBOL = zoneSymbol('Error');\n\n    var newFunctionToString = function toString() {\n      if (typeof this === 'function') {\n        var originalDelegate = this[ORIGINAL_DELEGATE_SYMBOL];\n\n        if (originalDelegate) {\n          if (typeof originalDelegate === 'function') {\n            return originalFunctionToString.call(originalDelegate);\n          } else {\n            return Object.prototype.toString.call(originalDelegate);\n          }\n        }\n\n        if (this === Promise) {\n          var nativePromise = global[PROMISE_SYMBOL];\n\n          if (nativePromise) {\n            return originalFunctionToString.call(nativePromise);\n          }\n        }\n\n        if (this === Error) {\n          var nativeError = global[ERROR_SYMBOL];\n\n          if (nativeError) {\n            return originalFunctionToString.call(nativeError);\n          }\n        }\n      }\n\n      return originalFunctionToString.call(this);\n    };\n\n    newFunctionToString[ORIGINAL_DELEGATE_SYMBOL] = originalFunctionToString;\n    Function.prototype.toString = newFunctionToString; // patch Object.prototype.toString to let them look like native\n\n    var originalObjectToString = Object.prototype.toString;\n    var PROMISE_OBJECT_TO_STRING = '[object Promise]';\n\n    Object.prototype.toString = function () {\n      if (typeof Promise === 'function' && this instanceof Promise) {\n        return PROMISE_OBJECT_TO_STRING;\n      }\n\n      return originalObjectToString.call(this);\n    };\n  });\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n\n\n  var passiveSupported = false;\n\n  if (typeof window !== 'undefined') {\n    try {\n      var options = Object.defineProperty({}, 'passive', {\n        get: function get() {\n          passiveSupported = true;\n        }\n      });\n      window.addEventListener('test', options, options);\n      window.removeEventListener('test', options, options);\n    } catch (err) {\n      passiveSupported = false;\n    }\n  } // an identifier to tell ZoneTask do not create a new invoke closure\n\n\n  var OPTIMIZED_ZONE_EVENT_TASK_DATA = {\n    useG: true\n  };\n  var zoneSymbolEventNames$1 = {};\n  var globalSources = {};\n  var EVENT_NAME_SYMBOL_REGX = new RegExp('^' + ZONE_SYMBOL_PREFIX + '(\\\\w+)(true|false)$');\n  var IMMEDIATE_PROPAGATION_SYMBOL = zoneSymbol('propagationStopped');\n\n  function prepareEventNames(eventName, eventNameToString) {\n    var falseEventName = (eventNameToString ? eventNameToString(eventName) : eventName) + FALSE_STR;\n    var trueEventName = (eventNameToString ? eventNameToString(eventName) : eventName) + TRUE_STR;\n    var symbol = ZONE_SYMBOL_PREFIX + falseEventName;\n    var symbolCapture = ZONE_SYMBOL_PREFIX + trueEventName;\n    zoneSymbolEventNames$1[eventName] = {};\n    zoneSymbolEventNames$1[eventName][FALSE_STR] = symbol;\n    zoneSymbolEventNames$1[eventName][TRUE_STR] = symbolCapture;\n  }\n\n  function patchEventTarget(_global, apis, patchOptions) {\n    var ADD_EVENT_LISTENER = patchOptions && patchOptions.add || ADD_EVENT_LISTENER_STR;\n    var REMOVE_EVENT_LISTENER = patchOptions && patchOptions.rm || REMOVE_EVENT_LISTENER_STR;\n    var LISTENERS_EVENT_LISTENER = patchOptions && patchOptions.listeners || 'eventListeners';\n    var REMOVE_ALL_LISTENERS_EVENT_LISTENER = patchOptions && patchOptions.rmAll || 'removeAllListeners';\n    var zoneSymbolAddEventListener = zoneSymbol(ADD_EVENT_LISTENER);\n    var ADD_EVENT_LISTENER_SOURCE = '.' + ADD_EVENT_LISTENER + ':';\n    var PREPEND_EVENT_LISTENER = 'prependListener';\n    var PREPEND_EVENT_LISTENER_SOURCE = '.' + PREPEND_EVENT_LISTENER + ':';\n\n    var invokeTask = function invokeTask(task, target, event) {\n      // for better performance, check isRemoved which is set\n      // by removeEventListener\n      if (task.isRemoved) {\n        return;\n      }\n\n      var delegate = task.callback;\n\n      if (_typeof(delegate) === 'object' && delegate.handleEvent) {\n        // create the bind version of handleEvent when invoke\n        task.callback = function (event) {\n          return delegate.handleEvent(event);\n        };\n\n        task.originalDelegate = delegate;\n      } // invoke static task.invoke\n\n\n      task.invoke(task, target, [event]);\n      var options = task.options;\n\n      if (options && _typeof(options) === 'object' && options.once) {\n        // if options.once is true, after invoke once remove listener here\n        // only browser need to do this, nodejs eventEmitter will cal removeListener\n        // inside EventEmitter.once\n        var delegate_1 = task.originalDelegate ? task.originalDelegate : task.callback;\n        target[REMOVE_EVENT_LISTENER].call(target, event.type, delegate_1, options);\n      }\n    }; // global shared zoneAwareCallback to handle all event callback with capture = false\n\n\n    var globalZoneAwareCallback = function globalZoneAwareCallback(event) {\n      // https://github.com/angular/zone.js/issues/911, in IE, sometimes\n      // event will be undefined, so we need to use window.event\n      event = event || _global.event;\n\n      if (!event) {\n        return;\n      } // event.target is needed for Samsung TV and SourceBuffer\n      // || global is needed https://github.com/angular/zone.js/issues/190\n\n\n      var target = this || event.target || _global;\n      var tasks = target[zoneSymbolEventNames$1[event.type][FALSE_STR]];\n\n      if (tasks) {\n        // invoke all tasks which attached to current target with given event.type and capture = false\n        // for performance concern, if task.length === 1, just invoke\n        if (tasks.length === 1) {\n          invokeTask(tasks[0], target, event);\n        } else {\n          // https://github.com/angular/zone.js/issues/836\n          // copy the tasks array before invoke, to avoid\n          // the callback will remove itself or other listener\n          var copyTasks = tasks.slice();\n\n          for (var i = 0; i < copyTasks.length; i++) {\n            if (event && event[IMMEDIATE_PROPAGATION_SYMBOL] === true) {\n              break;\n            }\n\n            invokeTask(copyTasks[i], target, event);\n          }\n        }\n      }\n    }; // global shared zoneAwareCallback to handle all event callback with capture = true\n\n\n    var globalZoneAwareCaptureCallback = function globalZoneAwareCaptureCallback(event) {\n      // https://github.com/angular/zone.js/issues/911, in IE, sometimes\n      // event will be undefined, so we need to use window.event\n      event = event || _global.event;\n\n      if (!event) {\n        return;\n      } // event.target is needed for Samsung TV and SourceBuffer\n      // || global is needed https://github.com/angular/zone.js/issues/190\n\n\n      var target = this || event.target || _global;\n      var tasks = target[zoneSymbolEventNames$1[event.type][TRUE_STR]];\n\n      if (tasks) {\n        // invoke all tasks which attached to current target with given event.type and capture = false\n        // for performance concern, if task.length === 1, just invoke\n        if (tasks.length === 1) {\n          invokeTask(tasks[0], target, event);\n        } else {\n          // https://github.com/angular/zone.js/issues/836\n          // copy the tasks array before invoke, to avoid\n          // the callback will remove itself or other listener\n          var copyTasks = tasks.slice();\n\n          for (var i = 0; i < copyTasks.length; i++) {\n            if (event && event[IMMEDIATE_PROPAGATION_SYMBOL] === true) {\n              break;\n            }\n\n            invokeTask(copyTasks[i], target, event);\n          }\n        }\n      }\n    };\n\n    function patchEventTargetMethods(obj, patchOptions) {\n      if (!obj) {\n        return false;\n      }\n\n      var useGlobalCallback = true;\n\n      if (patchOptions && patchOptions.useG !== undefined) {\n        useGlobalCallback = patchOptions.useG;\n      }\n\n      var validateHandler = patchOptions && patchOptions.vh;\n      var checkDuplicate = true;\n\n      if (patchOptions && patchOptions.chkDup !== undefined) {\n        checkDuplicate = patchOptions.chkDup;\n      }\n\n      var returnTarget = false;\n\n      if (patchOptions && patchOptions.rt !== undefined) {\n        returnTarget = patchOptions.rt;\n      }\n\n      var proto = obj;\n\n      while (proto && !proto.hasOwnProperty(ADD_EVENT_LISTENER)) {\n        proto = ObjectGetPrototypeOf(proto);\n      }\n\n      if (!proto && obj[ADD_EVENT_LISTENER]) {\n        // somehow we did not find it, but we can see it. This happens on IE for Window properties.\n        proto = obj;\n      }\n\n      if (!proto) {\n        return false;\n      }\n\n      if (proto[zoneSymbolAddEventListener]) {\n        return false;\n      }\n\n      var eventNameToString = patchOptions && patchOptions.eventNameToString; // a shared global taskData to pass data for scheduleEventTask\n      // so we do not need to create a new object just for pass some data\n\n      var taskData = {};\n      var nativeAddEventListener = proto[zoneSymbolAddEventListener] = proto[ADD_EVENT_LISTENER];\n      var nativeRemoveEventListener = proto[zoneSymbol(REMOVE_EVENT_LISTENER)] = proto[REMOVE_EVENT_LISTENER];\n      var nativeListeners = proto[zoneSymbol(LISTENERS_EVENT_LISTENER)] = proto[LISTENERS_EVENT_LISTENER];\n      var nativeRemoveAllListeners = proto[zoneSymbol(REMOVE_ALL_LISTENERS_EVENT_LISTENER)] = proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER];\n      var nativePrependEventListener;\n\n      if (patchOptions && patchOptions.prepend) {\n        nativePrependEventListener = proto[zoneSymbol(patchOptions.prepend)] = proto[patchOptions.prepend];\n      }\n      /**\n       * This util function will build an option object with passive option\n       * to handle all possible input from the user.\n       */\n\n\n      function buildEventListenerOptions(options, passive) {\n        if (!passiveSupported && _typeof(options) === 'object' && options) {\n          // doesn't support passive but user want to pass an object as options.\n          // this will not work on some old browser, so we just pass a boolean\n          // as useCapture parameter\n          return !!options.capture;\n        }\n\n        if (!passiveSupported || !passive) {\n          return options;\n        }\n\n        if (typeof options === 'boolean') {\n          return {\n            capture: options,\n            passive: true\n          };\n        }\n\n        if (!options) {\n          return {\n            passive: true\n          };\n        }\n\n        if (_typeof(options) === 'object' && options.passive !== false) {\n          return Object.assign(Object.assign({}, options), {\n            passive: true\n          });\n        }\n\n        return options;\n      }\n\n      var customScheduleGlobal = function customScheduleGlobal(task) {\n        // if there is already a task for the eventName + capture,\n        // just return, because we use the shared globalZoneAwareCallback here.\n        if (taskData.isExisting) {\n          return;\n        }\n\n        return nativeAddEventListener.call(taskData.target, taskData.eventName, taskData.capture ? globalZoneAwareCaptureCallback : globalZoneAwareCallback, taskData.options);\n      };\n\n      var customCancelGlobal = function customCancelGlobal(task) {\n        // if task is not marked as isRemoved, this call is directly\n        // from Zone.prototype.cancelTask, we should remove the task\n        // from tasksList of target first\n        if (!task.isRemoved) {\n          var symbolEventNames = zoneSymbolEventNames$1[task.eventName];\n          var symbolEventName = void 0;\n\n          if (symbolEventNames) {\n            symbolEventName = symbolEventNames[task.capture ? TRUE_STR : FALSE_STR];\n          }\n\n          var existingTasks = symbolEventName && task.target[symbolEventName];\n\n          if (existingTasks) {\n            for (var i = 0; i < existingTasks.length; i++) {\n              var existingTask = existingTasks[i];\n\n              if (existingTask === task) {\n                existingTasks.splice(i, 1); // set isRemoved to data for faster invokeTask check\n\n                task.isRemoved = true;\n\n                if (existingTasks.length === 0) {\n                  // all tasks for the eventName + capture have gone,\n                  // remove globalZoneAwareCallback and remove the task cache from target\n                  task.allRemoved = true;\n                  task.target[symbolEventName] = null;\n                }\n\n                break;\n              }\n            }\n          }\n        } // if all tasks for the eventName + capture have gone,\n        // we will really remove the global event callback,\n        // if not, return\n\n\n        if (!task.allRemoved) {\n          return;\n        }\n\n        return nativeRemoveEventListener.call(task.target, task.eventName, task.capture ? globalZoneAwareCaptureCallback : globalZoneAwareCallback, task.options);\n      };\n\n      var customScheduleNonGlobal = function customScheduleNonGlobal(task) {\n        return nativeAddEventListener.call(taskData.target, taskData.eventName, task.invoke, taskData.options);\n      };\n\n      var customSchedulePrepend = function customSchedulePrepend(task) {\n        return nativePrependEventListener.call(taskData.target, taskData.eventName, task.invoke, taskData.options);\n      };\n\n      var customCancelNonGlobal = function customCancelNonGlobal(task) {\n        return nativeRemoveEventListener.call(task.target, task.eventName, task.invoke, task.options);\n      };\n\n      var customSchedule = useGlobalCallback ? customScheduleGlobal : customScheduleNonGlobal;\n      var customCancel = useGlobalCallback ? customCancelGlobal : customCancelNonGlobal;\n\n      var compareTaskCallbackVsDelegate = function compareTaskCallbackVsDelegate(task, delegate) {\n        var typeOfDelegate = _typeof(delegate);\n\n        return typeOfDelegate === 'function' && task.callback === delegate || typeOfDelegate === 'object' && task.originalDelegate === delegate;\n      };\n\n      var compare = patchOptions && patchOptions.diff ? patchOptions.diff : compareTaskCallbackVsDelegate;\n      var unpatchedEvents = Zone[zoneSymbol('UNPATCHED_EVENTS')];\n\n      var passiveEvents = _global[zoneSymbol('PASSIVE_EVENTS')];\n\n      var makeAddListener = function makeAddListener(nativeListener, addSource, customScheduleFn, customCancelFn, returnTarget, prepend) {\n        if (returnTarget === void 0) {\n          returnTarget = false;\n        }\n\n        if (prepend === void 0) {\n          prepend = false;\n        }\n\n        return function () {\n          var target = this || _global;\n          var eventName = arguments[0];\n\n          if (patchOptions && patchOptions.transferEventName) {\n            eventName = patchOptions.transferEventName(eventName);\n          }\n\n          var delegate = arguments[1];\n\n          if (!delegate) {\n            return nativeListener.apply(this, arguments);\n          }\n\n          if (isNode && eventName === 'uncaughtException') {\n            // don't patch uncaughtException of nodejs to prevent endless loop\n            return nativeListener.apply(this, arguments);\n          } // don't create the bind delegate function for handleEvent\n          // case here to improve addEventListener performance\n          // we will create the bind delegate when invoke\n\n\n          var isHandleEvent = false;\n\n          if (typeof delegate !== 'function') {\n            if (!delegate.handleEvent) {\n              return nativeListener.apply(this, arguments);\n            }\n\n            isHandleEvent = true;\n          }\n\n          if (validateHandler && !validateHandler(nativeListener, delegate, target, arguments)) {\n            return;\n          }\n\n          var passive = passiveSupported && !!passiveEvents && passiveEvents.indexOf(eventName) !== -1;\n          var options = buildEventListenerOptions(arguments[2], passive);\n\n          if (unpatchedEvents) {\n            // check upatched list\n            for (var i = 0; i < unpatchedEvents.length; i++) {\n              if (eventName === unpatchedEvents[i]) {\n                if (passive) {\n                  return nativeListener.call(target, eventName, delegate, options);\n                } else {\n                  return nativeListener.apply(this, arguments);\n                }\n              }\n            }\n          }\n\n          var capture = !options ? false : typeof options === 'boolean' ? true : options.capture;\n          var once = options && _typeof(options) === 'object' ? options.once : false;\n          var zone = Zone.current;\n          var symbolEventNames = zoneSymbolEventNames$1[eventName];\n\n          if (!symbolEventNames) {\n            prepareEventNames(eventName, eventNameToString);\n            symbolEventNames = zoneSymbolEventNames$1[eventName];\n          }\n\n          var symbolEventName = symbolEventNames[capture ? TRUE_STR : FALSE_STR];\n          var existingTasks = target[symbolEventName];\n          var isExisting = false;\n\n          if (existingTasks) {\n            // already have task registered\n            isExisting = true;\n\n            if (checkDuplicate) {\n              for (var i = 0; i < existingTasks.length; i++) {\n                if (compare(existingTasks[i], delegate)) {\n                  // same callback, same capture, same event name, just return\n                  return;\n                }\n              }\n            }\n          } else {\n            existingTasks = target[symbolEventName] = [];\n          }\n\n          var source;\n          var constructorName = target.constructor['name'];\n          var targetSource = globalSources[constructorName];\n\n          if (targetSource) {\n            source = targetSource[eventName];\n          }\n\n          if (!source) {\n            source = constructorName + addSource + (eventNameToString ? eventNameToString(eventName) : eventName);\n          } // do not create a new object as task.data to pass those things\n          // just use the global shared one\n\n\n          taskData.options = options;\n\n          if (once) {\n            // if addEventListener with once options, we don't pass it to\n            // native addEventListener, instead we keep the once setting\n            // and handle ourselves.\n            taskData.options.once = false;\n          }\n\n          taskData.target = target;\n          taskData.capture = capture;\n          taskData.eventName = eventName;\n          taskData.isExisting = isExisting;\n          var data = useGlobalCallback ? OPTIMIZED_ZONE_EVENT_TASK_DATA : undefined; // keep taskData into data to allow onScheduleEventTask to access the task information\n\n          if (data) {\n            data.taskData = taskData;\n          }\n\n          var task = zone.scheduleEventTask(source, delegate, data, customScheduleFn, customCancelFn); // should clear taskData.target to avoid memory leak\n          // issue, https://github.com/angular/angular/issues/20442\n\n          taskData.target = null; // need to clear up taskData because it is a global object\n\n          if (data) {\n            data.taskData = null;\n          } // have to save those information to task in case\n          // application may call task.zone.cancelTask() directly\n\n\n          if (once) {\n            options.once = true;\n          }\n\n          if (!(!passiveSupported && typeof task.options === 'boolean')) {\n            // if not support passive, and we pass an option object\n            // to addEventListener, we should save the options to task\n            task.options = options;\n          }\n\n          task.target = target;\n          task.capture = capture;\n          task.eventName = eventName;\n\n          if (isHandleEvent) {\n            // save original delegate for compare to check duplicate\n            task.originalDelegate = delegate;\n          }\n\n          if (!prepend) {\n            existingTasks.push(task);\n          } else {\n            existingTasks.unshift(task);\n          }\n\n          if (returnTarget) {\n            return target;\n          }\n        };\n      };\n\n      proto[ADD_EVENT_LISTENER] = makeAddListener(nativeAddEventListener, ADD_EVENT_LISTENER_SOURCE, customSchedule, customCancel, returnTarget);\n\n      if (nativePrependEventListener) {\n        proto[PREPEND_EVENT_LISTENER] = makeAddListener(nativePrependEventListener, PREPEND_EVENT_LISTENER_SOURCE, customSchedulePrepend, customCancel, returnTarget, true);\n      }\n\n      proto[REMOVE_EVENT_LISTENER] = function () {\n        var target = this || _global;\n        var eventName = arguments[0];\n\n        if (patchOptions && patchOptions.transferEventName) {\n          eventName = patchOptions.transferEventName(eventName);\n        }\n\n        var options = arguments[2];\n        var capture = !options ? false : typeof options === 'boolean' ? true : options.capture;\n        var delegate = arguments[1];\n\n        if (!delegate) {\n          return nativeRemoveEventListener.apply(this, arguments);\n        }\n\n        if (validateHandler && !validateHandler(nativeRemoveEventListener, delegate, target, arguments)) {\n          return;\n        }\n\n        var symbolEventNames = zoneSymbolEventNames$1[eventName];\n        var symbolEventName;\n\n        if (symbolEventNames) {\n          symbolEventName = symbolEventNames[capture ? TRUE_STR : FALSE_STR];\n        }\n\n        var existingTasks = symbolEventName && target[symbolEventName];\n\n        if (existingTasks) {\n          for (var i = 0; i < existingTasks.length; i++) {\n            var existingTask = existingTasks[i];\n\n            if (compare(existingTask, delegate)) {\n              existingTasks.splice(i, 1); // set isRemoved to data for faster invokeTask check\n\n              existingTask.isRemoved = true;\n\n              if (existingTasks.length === 0) {\n                // all tasks for the eventName + capture have gone,\n                // remove globalZoneAwareCallback and remove the task cache from target\n                existingTask.allRemoved = true;\n                target[symbolEventName] = null; // in the target, we have an event listener which is added by on_property\n                // such as target.onclick = function() {}, so we need to clear this internal\n                // property too if all delegates all removed\n\n                if (typeof eventName === 'string') {\n                  var onPropertySymbol = ZONE_SYMBOL_PREFIX + 'ON_PROPERTY' + eventName;\n                  target[onPropertySymbol] = null;\n                }\n              }\n\n              existingTask.zone.cancelTask(existingTask);\n\n              if (returnTarget) {\n                return target;\n              }\n\n              return;\n            }\n          }\n        } // issue 930, didn't find the event name or callback\n        // from zone kept existingTasks, the callback maybe\n        // added outside of zone, we need to call native removeEventListener\n        // to try to remove it.\n\n\n        return nativeRemoveEventListener.apply(this, arguments);\n      };\n\n      proto[LISTENERS_EVENT_LISTENER] = function () {\n        var target = this || _global;\n        var eventName = arguments[0];\n\n        if (patchOptions && patchOptions.transferEventName) {\n          eventName = patchOptions.transferEventName(eventName);\n        }\n\n        var listeners = [];\n        var tasks = findEventTasks(target, eventNameToString ? eventNameToString(eventName) : eventName);\n\n        for (var i = 0; i < tasks.length; i++) {\n          var task = tasks[i];\n          var delegate = task.originalDelegate ? task.originalDelegate : task.callback;\n          listeners.push(delegate);\n        }\n\n        return listeners;\n      };\n\n      proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER] = function () {\n        var target = this || _global;\n        var eventName = arguments[0];\n\n        if (!eventName) {\n          var keys = Object.keys(target);\n\n          for (var i = 0; i < keys.length; i++) {\n            var prop = keys[i];\n            var match = EVENT_NAME_SYMBOL_REGX.exec(prop);\n            var evtName = match && match[1]; // in nodejs EventEmitter, removeListener event is\n            // used for monitoring the removeListener call,\n            // so just keep removeListener eventListener until\n            // all other eventListeners are removed\n\n            if (evtName && evtName !== 'removeListener') {\n              this[REMOVE_ALL_LISTENERS_EVENT_LISTENER].call(this, evtName);\n            }\n          } // remove removeListener listener finally\n\n\n          this[REMOVE_ALL_LISTENERS_EVENT_LISTENER].call(this, 'removeListener');\n        } else {\n          if (patchOptions && patchOptions.transferEventName) {\n            eventName = patchOptions.transferEventName(eventName);\n          }\n\n          var symbolEventNames = zoneSymbolEventNames$1[eventName];\n\n          if (symbolEventNames) {\n            var symbolEventName = symbolEventNames[FALSE_STR];\n            var symbolCaptureEventName = symbolEventNames[TRUE_STR];\n            var tasks = target[symbolEventName];\n            var captureTasks = target[symbolCaptureEventName];\n\n            if (tasks) {\n              var removeTasks = tasks.slice();\n\n              for (var i = 0; i < removeTasks.length; i++) {\n                var task = removeTasks[i];\n                var delegate = task.originalDelegate ? task.originalDelegate : task.callback;\n                this[REMOVE_EVENT_LISTENER].call(this, eventName, delegate, task.options);\n              }\n            }\n\n            if (captureTasks) {\n              var removeTasks = captureTasks.slice();\n\n              for (var i = 0; i < removeTasks.length; i++) {\n                var task = removeTasks[i];\n                var delegate = task.originalDelegate ? task.originalDelegate : task.callback;\n                this[REMOVE_EVENT_LISTENER].call(this, eventName, delegate, task.options);\n              }\n            }\n          }\n        }\n\n        if (returnTarget) {\n          return this;\n        }\n      }; // for native toString patch\n\n\n      attachOriginToPatched(proto[ADD_EVENT_LISTENER], nativeAddEventListener);\n      attachOriginToPatched(proto[REMOVE_EVENT_LISTENER], nativeRemoveEventListener);\n\n      if (nativeRemoveAllListeners) {\n        attachOriginToPatched(proto[REMOVE_ALL_LISTENERS_EVENT_LISTENER], nativeRemoveAllListeners);\n      }\n\n      if (nativeListeners) {\n        attachOriginToPatched(proto[LISTENERS_EVENT_LISTENER], nativeListeners);\n      }\n\n      return true;\n    }\n\n    var results = [];\n\n    for (var i = 0; i < apis.length; i++) {\n      results[i] = patchEventTargetMethods(apis[i], patchOptions);\n    }\n\n    return results;\n  }\n\n  function findEventTasks(target, eventName) {\n    if (!eventName) {\n      var foundTasks = [];\n\n      for (var prop in target) {\n        var match = EVENT_NAME_SYMBOL_REGX.exec(prop);\n        var evtName = match && match[1];\n\n        if (evtName && (!eventName || evtName === eventName)) {\n          var tasks = target[prop];\n\n          if (tasks) {\n            for (var i = 0; i < tasks.length; i++) {\n              foundTasks.push(tasks[i]);\n            }\n          }\n        }\n      }\n\n      return foundTasks;\n    }\n\n    var symbolEventName = zoneSymbolEventNames$1[eventName];\n\n    if (!symbolEventName) {\n      prepareEventNames(eventName);\n      symbolEventName = zoneSymbolEventNames$1[eventName];\n    }\n\n    var captureFalseTasks = target[symbolEventName[FALSE_STR]];\n    var captureTrueTasks = target[symbolEventName[TRUE_STR]];\n\n    if (!captureFalseTasks) {\n      return captureTrueTasks ? captureTrueTasks.slice() : [];\n    } else {\n      return captureTrueTasks ? captureFalseTasks.concat(captureTrueTasks) : captureFalseTasks.slice();\n    }\n  }\n\n  function patchEventPrototype(global, api) {\n    var Event = global['Event'];\n\n    if (Event && Event.prototype) {\n      api.patchMethod(Event.prototype, 'stopImmediatePropagation', function (delegate) {\n        return function (self, args) {\n          self[IMMEDIATE_PROPAGATION_SYMBOL] = true; // we need to call the native stopImmediatePropagation\n          // in case in some hybrid application, some part of\n          // application will be controlled by zone, some are not\n\n          delegate && delegate.apply(self, args);\n        };\n      });\n    }\n  }\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n\n\n  function patchCallbacks(api, target, targetName, method, callbacks) {\n    var symbol = Zone.__symbol__(method);\n\n    if (target[symbol]) {\n      return;\n    }\n\n    var nativeDelegate = target[symbol] = target[method];\n\n    target[method] = function (name, opts, options) {\n      if (opts && opts.prototype) {\n        callbacks.forEach(function (callback) {\n          var source = targetName + \".\" + method + \"::\" + callback;\n          var prototype = opts.prototype;\n\n          if (prototype.hasOwnProperty(callback)) {\n            var descriptor = api.ObjectGetOwnPropertyDescriptor(prototype, callback);\n\n            if (descriptor && descriptor.value) {\n              descriptor.value = api.wrapWithCurrentZone(descriptor.value, source);\n\n              api._redefineProperty(opts.prototype, callback, descriptor);\n            } else if (prototype[callback]) {\n              prototype[callback] = api.wrapWithCurrentZone(prototype[callback], source);\n            }\n          } else if (prototype[callback]) {\n            prototype[callback] = api.wrapWithCurrentZone(prototype[callback], source);\n          }\n        });\n      }\n\n      return nativeDelegate.call(target, name, opts, options);\n    };\n\n    api.attachOriginToPatched(target[method], nativeDelegate);\n  }\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n\n\n  var globalEventHandlersEventNames = ['abort', 'animationcancel', 'animationend', 'animationiteration', 'auxclick', 'beforeinput', 'blur', 'cancel', 'canplay', 'canplaythrough', 'change', 'compositionstart', 'compositionupdate', 'compositionend', 'cuechange', 'click', 'close', 'contextmenu', 'curechange', 'dblclick', 'drag', 'dragend', 'dragenter', 'dragexit', 'dragleave', 'dragover', 'drop', 'durationchange', 'emptied', 'ended', 'error', 'focus', 'focusin', 'focusout', 'gotpointercapture', 'input', 'invalid', 'keydown', 'keypress', 'keyup', 'load', 'loadstart', 'loadeddata', 'loadedmetadata', 'lostpointercapture', 'mousedown', 'mouseenter', 'mouseleave', 'mousemove', 'mouseout', 'mouseover', 'mouseup', 'mousewheel', 'orientationchange', 'pause', 'play', 'playing', 'pointercancel', 'pointerdown', 'pointerenter', 'pointerleave', 'pointerlockchange', 'mozpointerlockchange', 'webkitpointerlockerchange', 'pointerlockerror', 'mozpointerlockerror', 'webkitpointerlockerror', 'pointermove', 'pointout', 'pointerover', 'pointerup', 'progress', 'ratechange', 'reset', 'resize', 'scroll', 'seeked', 'seeking', 'select', 'selectionchange', 'selectstart', 'show', 'sort', 'stalled', 'submit', 'suspend', 'timeupdate', 'volumechange', 'touchcancel', 'touchmove', 'touchstart', 'touchend', 'transitioncancel', 'transitionend', 'waiting', 'wheel'];\n  var documentEventNames = ['afterscriptexecute', 'beforescriptexecute', 'DOMContentLoaded', 'freeze', 'fullscreenchange', 'mozfullscreenchange', 'webkitfullscreenchange', 'msfullscreenchange', 'fullscreenerror', 'mozfullscreenerror', 'webkitfullscreenerror', 'msfullscreenerror', 'readystatechange', 'visibilitychange', 'resume'];\n  var windowEventNames = ['absolutedeviceorientation', 'afterinput', 'afterprint', 'appinstalled', 'beforeinstallprompt', 'beforeprint', 'beforeunload', 'devicelight', 'devicemotion', 'deviceorientation', 'deviceorientationabsolute', 'deviceproximity', 'hashchange', 'languagechange', 'message', 'mozbeforepaint', 'offline', 'online', 'paint', 'pageshow', 'pagehide', 'popstate', 'rejectionhandled', 'storage', 'unhandledrejection', 'unload', 'userproximity', 'vrdisplayconnected', 'vrdisplaydisconnected', 'vrdisplaypresentchange'];\n  var htmlElementEventNames = ['beforecopy', 'beforecut', 'beforepaste', 'copy', 'cut', 'paste', 'dragstart', 'loadend', 'animationstart', 'search', 'transitionrun', 'transitionstart', 'webkitanimationend', 'webkitanimationiteration', 'webkitanimationstart', 'webkittransitionend'];\n  var mediaElementEventNames = ['encrypted', 'waitingforkey', 'msneedkey', 'mozinterruptbegin', 'mozinterruptend'];\n  var ieElementEventNames = ['activate', 'afterupdate', 'ariarequest', 'beforeactivate', 'beforedeactivate', 'beforeeditfocus', 'beforeupdate', 'cellchange', 'controlselect', 'dataavailable', 'datasetchanged', 'datasetcomplete', 'errorupdate', 'filterchange', 'layoutcomplete', 'losecapture', 'move', 'moveend', 'movestart', 'propertychange', 'resizeend', 'resizestart', 'rowenter', 'rowexit', 'rowsdelete', 'rowsinserted', 'command', 'compassneedscalibration', 'deactivate', 'help', 'mscontentzoom', 'msmanipulationstatechanged', 'msgesturechange', 'msgesturedoubletap', 'msgestureend', 'msgesturehold', 'msgesturestart', 'msgesturetap', 'msgotpointercapture', 'msinertiastart', 'mslostpointercapture', 'mspointercancel', 'mspointerdown', 'mspointerenter', 'mspointerhover', 'mspointerleave', 'mspointermove', 'mspointerout', 'mspointerover', 'mspointerup', 'pointerout', 'mssitemodejumplistitemremoved', 'msthumbnailclick', 'stop', 'storagecommit'];\n  var webglEventNames = ['webglcontextrestored', 'webglcontextlost', 'webglcontextcreationerror'];\n  var formEventNames = ['autocomplete', 'autocompleteerror'];\n  var detailEventNames = ['toggle'];\n  var frameEventNames = ['load'];\n  var frameSetEventNames = ['blur', 'error', 'focus', 'load', 'resize', 'scroll', 'messageerror'];\n  var marqueeEventNames = ['bounce', 'finish', 'start'];\n  var XMLHttpRequestEventNames = ['loadstart', 'progress', 'abort', 'error', 'load', 'progress', 'timeout', 'loadend', 'readystatechange'];\n  var IDBIndexEventNames = ['upgradeneeded', 'complete', 'abort', 'success', 'error', 'blocked', 'versionchange', 'close'];\n  var websocketEventNames = ['close', 'error', 'open', 'message'];\n  var workerEventNames = ['error', 'message'];\n  var eventNames = globalEventHandlersEventNames.concat(webglEventNames, formEventNames, detailEventNames, documentEventNames, windowEventNames, htmlElementEventNames, ieElementEventNames);\n\n  function filterProperties(target, onProperties, ignoreProperties) {\n    if (!ignoreProperties || ignoreProperties.length === 0) {\n      return onProperties;\n    }\n\n    var tip = ignoreProperties.filter(function (ip) {\n      return ip.target === target;\n    });\n\n    if (!tip || tip.length === 0) {\n      return onProperties;\n    }\n\n    var targetIgnoreProperties = tip[0].ignoreProperties;\n    return onProperties.filter(function (op) {\n      return targetIgnoreProperties.indexOf(op) === -1;\n    });\n  }\n\n  function patchFilteredProperties(target, onProperties, ignoreProperties, prototype) {\n    // check whether target is available, sometimes target will be undefined\n    // because different browser or some 3rd party plugin.\n    if (!target) {\n      return;\n    }\n\n    var filteredProperties = filterProperties(target, onProperties, ignoreProperties);\n    patchOnProperties(target, filteredProperties, prototype);\n  }\n\n  function propertyDescriptorPatch(api, _global) {\n    if (isNode && !isMix) {\n      return;\n    }\n\n    if (Zone[api.symbol('patchEvents')]) {\n      // events are already been patched by legacy patch.\n      return;\n    }\n\n    var supportsWebSocket = typeof WebSocket !== 'undefined';\n    var ignoreProperties = _global['__Zone_ignore_on_properties']; // for browsers that we can patch the descriptor:  Chrome & Firefox\n\n    if (isBrowser) {\n      var internalWindow_1 = window;\n      var ignoreErrorProperties = isIE() ? [{\n        target: internalWindow_1,\n        ignoreProperties: ['error']\n      }] : []; // in IE/Edge, onProp not exist in window object, but in WindowPrototype\n      // so we need to pass WindowPrototype to check onProp exist or not\n\n      patchFilteredProperties(internalWindow_1, eventNames.concat(['messageerror']), ignoreProperties ? ignoreProperties.concat(ignoreErrorProperties) : ignoreProperties, ObjectGetPrototypeOf(internalWindow_1));\n      patchFilteredProperties(Document.prototype, eventNames, ignoreProperties);\n\n      if (typeof internalWindow_1['SVGElement'] !== 'undefined') {\n        patchFilteredProperties(internalWindow_1['SVGElement'].prototype, eventNames, ignoreProperties);\n      }\n\n      patchFilteredProperties(Element.prototype, eventNames, ignoreProperties);\n      patchFilteredProperties(HTMLElement.prototype, eventNames, ignoreProperties);\n      patchFilteredProperties(HTMLMediaElement.prototype, mediaElementEventNames, ignoreProperties);\n      patchFilteredProperties(HTMLFrameSetElement.prototype, windowEventNames.concat(frameSetEventNames), ignoreProperties);\n      patchFilteredProperties(HTMLBodyElement.prototype, windowEventNames.concat(frameSetEventNames), ignoreProperties);\n      patchFilteredProperties(HTMLFrameElement.prototype, frameEventNames, ignoreProperties);\n      patchFilteredProperties(HTMLIFrameElement.prototype, frameEventNames, ignoreProperties);\n      var HTMLMarqueeElement_1 = internalWindow_1['HTMLMarqueeElement'];\n\n      if (HTMLMarqueeElement_1) {\n        patchFilteredProperties(HTMLMarqueeElement_1.prototype, marqueeEventNames, ignoreProperties);\n      }\n\n      var Worker_1 = internalWindow_1['Worker'];\n\n      if (Worker_1) {\n        patchFilteredProperties(Worker_1.prototype, workerEventNames, ignoreProperties);\n      }\n    }\n\n    var XMLHttpRequest = _global['XMLHttpRequest'];\n\n    if (XMLHttpRequest) {\n      // XMLHttpRequest is not available in ServiceWorker, so we need to check here\n      patchFilteredProperties(XMLHttpRequest.prototype, XMLHttpRequestEventNames, ignoreProperties);\n    }\n\n    var XMLHttpRequestEventTarget = _global['XMLHttpRequestEventTarget'];\n\n    if (XMLHttpRequestEventTarget) {\n      patchFilteredProperties(XMLHttpRequestEventTarget && XMLHttpRequestEventTarget.prototype, XMLHttpRequestEventNames, ignoreProperties);\n    }\n\n    if (typeof IDBIndex !== 'undefined') {\n      patchFilteredProperties(IDBIndex.prototype, IDBIndexEventNames, ignoreProperties);\n      patchFilteredProperties(IDBRequest.prototype, IDBIndexEventNames, ignoreProperties);\n      patchFilteredProperties(IDBOpenDBRequest.prototype, IDBIndexEventNames, ignoreProperties);\n      patchFilteredProperties(IDBDatabase.prototype, IDBIndexEventNames, ignoreProperties);\n      patchFilteredProperties(IDBTransaction.prototype, IDBIndexEventNames, ignoreProperties);\n      patchFilteredProperties(IDBCursor.prototype, IDBIndexEventNames, ignoreProperties);\n    }\n\n    if (supportsWebSocket) {\n      patchFilteredProperties(WebSocket.prototype, websocketEventNames, ignoreProperties);\n    }\n  }\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n\n\n  Zone.__load_patch('util', function (global, Zone, api) {\n    api.patchOnProperties = patchOnProperties;\n    api.patchMethod = patchMethod;\n    api.bindArguments = bindArguments;\n    api.patchMacroTask = patchMacroTask; // In earlier version of zone.js (<0.9.0), we use env name `__zone_symbol__BLACK_LISTED_EVENTS` to\n    // define which events will not be patched by `Zone.js`.\n    // In newer version (>=0.9.0), we change the env name to `__zone_symbol__UNPATCHED_EVENTS` to keep\n    // the name consistent with angular repo.\n    // The  `__zone_symbol__BLACK_LISTED_EVENTS` is deprecated, but it is still be supported for\n    // backwards compatibility.\n\n    var SYMBOL_BLACK_LISTED_EVENTS = Zone.__symbol__('BLACK_LISTED_EVENTS');\n\n    var SYMBOL_UNPATCHED_EVENTS = Zone.__symbol__('UNPATCHED_EVENTS');\n\n    if (global[SYMBOL_UNPATCHED_EVENTS]) {\n      global[SYMBOL_BLACK_LISTED_EVENTS] = global[SYMBOL_UNPATCHED_EVENTS];\n    }\n\n    if (global[SYMBOL_BLACK_LISTED_EVENTS]) {\n      Zone[SYMBOL_BLACK_LISTED_EVENTS] = Zone[SYMBOL_UNPATCHED_EVENTS] = global[SYMBOL_BLACK_LISTED_EVENTS];\n    }\n\n    api.patchEventPrototype = patchEventPrototype;\n    api.patchEventTarget = patchEventTarget;\n    api.isIEOrEdge = isIEOrEdge;\n    api.ObjectDefineProperty = ObjectDefineProperty;\n    api.ObjectGetOwnPropertyDescriptor = ObjectGetOwnPropertyDescriptor;\n    api.ObjectCreate = ObjectCreate;\n    api.ArraySlice = ArraySlice;\n    api.patchClass = patchClass;\n    api.wrapWithCurrentZone = wrapWithCurrentZone;\n    api.filterProperties = filterProperties;\n    api.attachOriginToPatched = attachOriginToPatched;\n    api._redefineProperty = Object.defineProperty;\n    api.patchCallbacks = patchCallbacks;\n\n    api.getGlobalObjects = function () {\n      return {\n        globalSources: globalSources,\n        zoneSymbolEventNames: zoneSymbolEventNames$1,\n        eventNames: eventNames,\n        isBrowser: isBrowser,\n        isMix: isMix,\n        isNode: isNode,\n        TRUE_STR: TRUE_STR,\n        FALSE_STR: FALSE_STR,\n        ZONE_SYMBOL_PREFIX: ZONE_SYMBOL_PREFIX,\n        ADD_EVENT_LISTENER_STR: ADD_EVENT_LISTENER_STR,\n        REMOVE_EVENT_LISTENER_STR: REMOVE_EVENT_LISTENER_STR\n      };\n    };\n  });\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n\n  /*\n   * This is necessary for Chrome and Chrome mobile, to enable\n   * things like redefining `createdCallback` on an element.\n   */\n\n\n  var zoneSymbol$1;\n\n  var _defineProperty;\n\n  var _getOwnPropertyDescriptor;\n\n  var _create;\n\n  var unconfigurablesKey;\n\n  function propertyPatch() {\n    zoneSymbol$1 = Zone.__symbol__;\n    _defineProperty = Object[zoneSymbol$1('defineProperty')] = Object.defineProperty;\n    _getOwnPropertyDescriptor = Object[zoneSymbol$1('getOwnPropertyDescriptor')] = Object.getOwnPropertyDescriptor;\n    _create = Object.create;\n    unconfigurablesKey = zoneSymbol$1('unconfigurables');\n\n    Object.defineProperty = function (obj, prop, desc) {\n      if (isUnconfigurable(obj, prop)) {\n        throw new TypeError('Cannot assign to read only property \\'' + prop + '\\' of ' + obj);\n      }\n\n      var originalConfigurableFlag = desc.configurable;\n\n      if (prop !== 'prototype') {\n        desc = rewriteDescriptor(obj, prop, desc);\n      }\n\n      return _tryDefineProperty(obj, prop, desc, originalConfigurableFlag);\n    };\n\n    Object.defineProperties = function (obj, props) {\n      Object.keys(props).forEach(function (prop) {\n        Object.defineProperty(obj, prop, props[prop]);\n      });\n      return obj;\n    };\n\n    Object.create = function (obj, proto) {\n      if (_typeof(proto) === 'object' && !Object.isFrozen(proto)) {\n        Object.keys(proto).forEach(function (prop) {\n          proto[prop] = rewriteDescriptor(obj, prop, proto[prop]);\n        });\n      }\n\n      return _create(obj, proto);\n    };\n\n    Object.getOwnPropertyDescriptor = function (obj, prop) {\n      var desc = _getOwnPropertyDescriptor(obj, prop);\n\n      if (desc && isUnconfigurable(obj, prop)) {\n        desc.configurable = false;\n      }\n\n      return desc;\n    };\n  }\n\n  function _redefineProperty(obj, prop, desc) {\n    var originalConfigurableFlag = desc.configurable;\n    desc = rewriteDescriptor(obj, prop, desc);\n    return _tryDefineProperty(obj, prop, desc, originalConfigurableFlag);\n  }\n\n  function isUnconfigurable(obj, prop) {\n    return obj && obj[unconfigurablesKey] && obj[unconfigurablesKey][prop];\n  }\n\n  function rewriteDescriptor(obj, prop, desc) {\n    // issue-927, if the desc is frozen, don't try to change the desc\n    if (!Object.isFrozen(desc)) {\n      desc.configurable = true;\n    }\n\n    if (!desc.configurable) {\n      // issue-927, if the obj is frozen, don't try to set the desc to obj\n      if (!obj[unconfigurablesKey] && !Object.isFrozen(obj)) {\n        _defineProperty(obj, unconfigurablesKey, {\n          writable: true,\n          value: {}\n        });\n      }\n\n      if (obj[unconfigurablesKey]) {\n        obj[unconfigurablesKey][prop] = true;\n      }\n    }\n\n    return desc;\n  }\n\n  function _tryDefineProperty(obj, prop, desc, originalConfigurableFlag) {\n    try {\n      return _defineProperty(obj, prop, desc);\n    } catch (error) {\n      if (desc.configurable) {\n        // In case of errors, when the configurable flag was likely set by rewriteDescriptor(), let's\n        // retry with the original flag value\n        if (typeof originalConfigurableFlag == 'undefined') {\n          delete desc.configurable;\n        } else {\n          desc.configurable = originalConfigurableFlag;\n        }\n\n        try {\n          return _defineProperty(obj, prop, desc);\n        } catch (error) {\n          var swallowError = false;\n\n          if (prop === 'createdCallback' || prop === 'attachedCallback' || prop === 'detachedCallback' || prop === 'attributeChangedCallback') {\n            // We only swallow the error in registerElement patch\n            // this is the work around since some applications\n            // fail if we throw the error\n            swallowError = true;\n          }\n\n          if (!swallowError) {\n            throw error;\n          } // TODO: @JiaLiPassion, Some application such as `registerElement` patch\n          // still need to swallow the error, in the future after these applications\n          // are updated, the following logic can be removed.\n\n\n          var descJson = null;\n\n          try {\n            descJson = JSON.stringify(desc);\n          } catch (error) {\n            descJson = desc.toString();\n          }\n\n          console.log(\"Attempting to configure '\" + prop + \"' with descriptor '\" + descJson + \"' on object '\" + obj + \"' and got error, giving up: \" + error);\n        }\n      } else {\n        throw error;\n      }\n    }\n  }\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n\n\n  function eventTargetLegacyPatch(_global, api) {\n    var _a = api.getGlobalObjects(),\n        eventNames = _a.eventNames,\n        globalSources = _a.globalSources,\n        zoneSymbolEventNames = _a.zoneSymbolEventNames,\n        TRUE_STR = _a.TRUE_STR,\n        FALSE_STR = _a.FALSE_STR,\n        ZONE_SYMBOL_PREFIX = _a.ZONE_SYMBOL_PREFIX;\n\n    var WTF_ISSUE_555 = 'Anchor,Area,Audio,BR,Base,BaseFont,Body,Button,Canvas,Content,DList,Directory,Div,Embed,FieldSet,Font,Form,Frame,FrameSet,HR,Head,Heading,Html,IFrame,Image,Input,Keygen,LI,Label,Legend,Link,Map,Marquee,Media,Menu,Meta,Meter,Mod,OList,Object,OptGroup,Option,Output,Paragraph,Pre,Progress,Quote,Script,Select,Source,Span,Style,TableCaption,TableCell,TableCol,Table,TableRow,TableSection,TextArea,Title,Track,UList,Unknown,Video';\n    var NO_EVENT_TARGET = 'ApplicationCache,EventSource,FileReader,InputMethodContext,MediaController,MessagePort,Node,Performance,SVGElementInstance,SharedWorker,TextTrack,TextTrackCue,TextTrackList,WebKitNamedFlow,Window,Worker,WorkerGlobalScope,XMLHttpRequest,XMLHttpRequestEventTarget,XMLHttpRequestUpload,IDBRequest,IDBOpenDBRequest,IDBDatabase,IDBTransaction,IDBCursor,DBIndex,WebSocket'.split(',');\n    var EVENT_TARGET = 'EventTarget';\n    var apis = [];\n    var isWtf = _global['wtf'];\n    var WTF_ISSUE_555_ARRAY = WTF_ISSUE_555.split(',');\n\n    if (isWtf) {\n      // Workaround for: https://github.com/google/tracing-framework/issues/555\n      apis = WTF_ISSUE_555_ARRAY.map(function (v) {\n        return 'HTML' + v + 'Element';\n      }).concat(NO_EVENT_TARGET);\n    } else if (_global[EVENT_TARGET]) {\n      apis.push(EVENT_TARGET);\n    } else {\n      // Note: EventTarget is not available in all browsers,\n      // if it's not available, we instead patch the APIs in the IDL that inherit from EventTarget\n      apis = NO_EVENT_TARGET;\n    }\n\n    var isDisableIECheck = _global['__Zone_disable_IE_check'] || false;\n    var isEnableCrossContextCheck = _global['__Zone_enable_cross_context_check'] || false;\n    var ieOrEdge = api.isIEOrEdge();\n    var ADD_EVENT_LISTENER_SOURCE = '.addEventListener:';\n    var FUNCTION_WRAPPER = '[object FunctionWrapper]';\n    var BROWSER_TOOLS = 'function __BROWSERTOOLS_CONSOLE_SAFEFUNC() { [native code] }';\n    var pointerEventsMap = {\n      'MSPointerCancel': 'pointercancel',\n      'MSPointerDown': 'pointerdown',\n      'MSPointerEnter': 'pointerenter',\n      'MSPointerHover': 'pointerhover',\n      'MSPointerLeave': 'pointerleave',\n      'MSPointerMove': 'pointermove',\n      'MSPointerOut': 'pointerout',\n      'MSPointerOver': 'pointerover',\n      'MSPointerUp': 'pointerup'\n    }; //  predefine all __zone_symbol__ + eventName + true/false string\n\n    for (var i = 0; i < eventNames.length; i++) {\n      var eventName = eventNames[i];\n      var falseEventName = eventName + FALSE_STR;\n      var trueEventName = eventName + TRUE_STR;\n      var symbol = ZONE_SYMBOL_PREFIX + falseEventName;\n      var symbolCapture = ZONE_SYMBOL_PREFIX + trueEventName;\n      zoneSymbolEventNames[eventName] = {};\n      zoneSymbolEventNames[eventName][FALSE_STR] = symbol;\n      zoneSymbolEventNames[eventName][TRUE_STR] = symbolCapture;\n    } //  predefine all task.source string\n\n\n    for (var i = 0; i < WTF_ISSUE_555_ARRAY.length; i++) {\n      var target = WTF_ISSUE_555_ARRAY[i];\n      var targets = globalSources[target] = {};\n\n      for (var j = 0; j < eventNames.length; j++) {\n        var eventName = eventNames[j];\n        targets[eventName] = target + ADD_EVENT_LISTENER_SOURCE + eventName;\n      }\n    }\n\n    var checkIEAndCrossContext = function checkIEAndCrossContext(nativeDelegate, delegate, target, args) {\n      if (!isDisableIECheck && ieOrEdge) {\n        if (isEnableCrossContextCheck) {\n          try {\n            var testString = delegate.toString();\n\n            if (testString === FUNCTION_WRAPPER || testString == BROWSER_TOOLS) {\n              nativeDelegate.apply(target, args);\n              return false;\n            }\n          } catch (error) {\n            nativeDelegate.apply(target, args);\n            return false;\n          }\n        } else {\n          var testString = delegate.toString();\n\n          if (testString === FUNCTION_WRAPPER || testString == BROWSER_TOOLS) {\n            nativeDelegate.apply(target, args);\n            return false;\n          }\n        }\n      } else if (isEnableCrossContextCheck) {\n        try {\n          delegate.toString();\n        } catch (error) {\n          nativeDelegate.apply(target, args);\n          return false;\n        }\n      }\n\n      return true;\n    };\n\n    var apiTypes = [];\n\n    for (var i = 0; i < apis.length; i++) {\n      var type = _global[apis[i]];\n      apiTypes.push(type && type.prototype);\n    } // vh is validateHandler to check event handler\n    // is valid or not(for security check)\n\n\n    api.patchEventTarget(_global, apiTypes, {\n      vh: checkIEAndCrossContext,\n      transferEventName: function transferEventName(eventName) {\n        var pointerEventName = pointerEventsMap[eventName];\n        return pointerEventName || eventName;\n      }\n    });\n    Zone[api.symbol('patchEventTarget')] = !!_global[EVENT_TARGET];\n    return true;\n  }\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n  // we have to patch the instance since the proto is non-configurable\n\n\n  function apply(api, _global) {\n    var _a = api.getGlobalObjects(),\n        ADD_EVENT_LISTENER_STR = _a.ADD_EVENT_LISTENER_STR,\n        REMOVE_EVENT_LISTENER_STR = _a.REMOVE_EVENT_LISTENER_STR;\n\n    var WS = _global.WebSocket; // On Safari window.EventTarget doesn't exist so need to patch WS add/removeEventListener\n    // On older Chrome, no need since EventTarget was already patched\n\n    if (!_global.EventTarget) {\n      api.patchEventTarget(_global, [WS.prototype]);\n    }\n\n    _global.WebSocket = function (x, y) {\n      var socket = arguments.length > 1 ? new WS(x, y) : new WS(x);\n      var proxySocket;\n      var proxySocketProto; // Safari 7.0 has non-configurable own 'onmessage' and friends properties on the socket instance\n\n      var onmessageDesc = api.ObjectGetOwnPropertyDescriptor(socket, 'onmessage');\n\n      if (onmessageDesc && onmessageDesc.configurable === false) {\n        proxySocket = api.ObjectCreate(socket); // socket have own property descriptor 'onopen', 'onmessage', 'onclose', 'onerror'\n        // but proxySocket not, so we will keep socket as prototype and pass it to\n        // patchOnProperties method\n\n        proxySocketProto = socket;\n        [ADD_EVENT_LISTENER_STR, REMOVE_EVENT_LISTENER_STR, 'send', 'close'].forEach(function (propName) {\n          proxySocket[propName] = function () {\n            var args = api.ArraySlice.call(arguments);\n\n            if (propName === ADD_EVENT_LISTENER_STR || propName === REMOVE_EVENT_LISTENER_STR) {\n              var eventName = args.length > 0 ? args[0] : undefined;\n\n              if (eventName) {\n                var propertySymbol = Zone.__symbol__('ON_PROPERTY' + eventName);\n\n                socket[propertySymbol] = proxySocket[propertySymbol];\n              }\n            }\n\n            return socket[propName].apply(socket, args);\n          };\n        });\n      } else {\n        // we can patch the real socket\n        proxySocket = socket;\n      }\n\n      api.patchOnProperties(proxySocket, ['close', 'error', 'message', 'open'], proxySocketProto);\n      return proxySocket;\n    };\n\n    var globalWebSocket = _global['WebSocket'];\n\n    for (var prop in WS) {\n      globalWebSocket[prop] = WS[prop];\n    }\n  }\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n\n\n  function propertyDescriptorLegacyPatch(api, _global) {\n    var _a = api.getGlobalObjects(),\n        isNode = _a.isNode,\n        isMix = _a.isMix;\n\n    if (isNode && !isMix) {\n      return;\n    }\n\n    if (!canPatchViaPropertyDescriptor(api, _global)) {\n      var supportsWebSocket = typeof WebSocket !== 'undefined'; // Safari, Android browsers (Jelly Bean)\n\n      patchViaCapturingAllTheEvents(api);\n      api.patchClass('XMLHttpRequest');\n\n      if (supportsWebSocket) {\n        apply(api, _global);\n      }\n\n      Zone[api.symbol('patchEvents')] = true;\n    }\n  }\n\n  function canPatchViaPropertyDescriptor(api, _global) {\n    var _a = api.getGlobalObjects(),\n        isBrowser = _a.isBrowser,\n        isMix = _a.isMix;\n\n    if ((isBrowser || isMix) && !api.ObjectGetOwnPropertyDescriptor(HTMLElement.prototype, 'onclick') && typeof Element !== 'undefined') {\n      // WebKit https://bugs.webkit.org/show_bug.cgi?id=134364\n      // IDL interface attributes are not configurable\n      var desc = api.ObjectGetOwnPropertyDescriptor(Element.prototype, 'onclick');\n      if (desc && !desc.configurable) return false; // try to use onclick to detect whether we can patch via propertyDescriptor\n      // because XMLHttpRequest is not available in service worker\n\n      if (desc) {\n        api.ObjectDefineProperty(Element.prototype, 'onclick', {\n          enumerable: true,\n          configurable: true,\n          get: function get() {\n            return true;\n          }\n        });\n        var div = document.createElement('div');\n        var result = !!div.onclick;\n        api.ObjectDefineProperty(Element.prototype, 'onclick', desc);\n        return result;\n      }\n    }\n\n    var XMLHttpRequest = _global['XMLHttpRequest'];\n\n    if (!XMLHttpRequest) {\n      // XMLHttpRequest is not available in service worker\n      return false;\n    }\n\n    var ON_READY_STATE_CHANGE = 'onreadystatechange';\n    var XMLHttpRequestPrototype = XMLHttpRequest.prototype;\n    var xhrDesc = api.ObjectGetOwnPropertyDescriptor(XMLHttpRequestPrototype, ON_READY_STATE_CHANGE); // add enumerable and configurable here because in opera\n    // by default XMLHttpRequest.prototype.onreadystatechange is undefined\n    // without adding enumerable and configurable will cause onreadystatechange\n    // non-configurable\n    // and if XMLHttpRequest.prototype.onreadystatechange is undefined,\n    // we should set a real desc instead a fake one\n\n    if (xhrDesc) {\n      api.ObjectDefineProperty(XMLHttpRequestPrototype, ON_READY_STATE_CHANGE, {\n        enumerable: true,\n        configurable: true,\n        get: function get() {\n          return true;\n        }\n      });\n      var req = new XMLHttpRequest();\n      var result = !!req.onreadystatechange; // restore original desc\n\n      api.ObjectDefineProperty(XMLHttpRequestPrototype, ON_READY_STATE_CHANGE, xhrDesc || {});\n      return result;\n    } else {\n      var SYMBOL_FAKE_ONREADYSTATECHANGE_1 = api.symbol('fake');\n      api.ObjectDefineProperty(XMLHttpRequestPrototype, ON_READY_STATE_CHANGE, {\n        enumerable: true,\n        configurable: true,\n        get: function get() {\n          return this[SYMBOL_FAKE_ONREADYSTATECHANGE_1];\n        },\n        set: function set(value) {\n          this[SYMBOL_FAKE_ONREADYSTATECHANGE_1] = value;\n        }\n      });\n      var req = new XMLHttpRequest();\n\n      var detectFunc = function detectFunc() {};\n\n      req.onreadystatechange = detectFunc;\n      var result = req[SYMBOL_FAKE_ONREADYSTATECHANGE_1] === detectFunc;\n      req.onreadystatechange = null;\n      return result;\n    }\n  } // Whenever any eventListener fires, we check the eventListener target and all parents\n  // for `onwhatever` properties and replace them with zone-bound functions\n  // - Chrome (for now)\n\n\n  function patchViaCapturingAllTheEvents(api) {\n    var eventNames = api.getGlobalObjects().eventNames;\n    var unboundKey = api.symbol('unbound');\n\n    var _loop_4 = function _loop_4(i) {\n      var property = eventNames[i];\n      var onproperty = 'on' + property;\n      self.addEventListener(property, function (event) {\n        var elt = event.target,\n            bound,\n            source;\n\n        if (elt) {\n          source = elt.constructor['name'] + '.' + onproperty;\n        } else {\n          source = 'unknown.' + onproperty;\n        }\n\n        while (elt) {\n          if (elt[onproperty] && !elt[onproperty][unboundKey]) {\n            bound = api.wrapWithCurrentZone(elt[onproperty], source);\n            bound[unboundKey] = elt[onproperty];\n            elt[onproperty] = bound;\n          }\n\n          elt = elt.parentElement;\n        }\n      }, true);\n    };\n\n    for (var i = 0; i < eventNames.length; i++) {\n      _loop_4(i);\n    }\n  }\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n\n\n  function registerElementPatch(_global, api) {\n    var _a = api.getGlobalObjects(),\n        isBrowser = _a.isBrowser,\n        isMix = _a.isMix;\n\n    if (!isBrowser && !isMix || !('registerElement' in _global.document)) {\n      return;\n    }\n\n    var callbacks = ['createdCallback', 'attachedCallback', 'detachedCallback', 'attributeChangedCallback'];\n    api.patchCallbacks(api, document, 'Document', 'registerElement', callbacks);\n  }\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n\n\n  (function (_global) {\n    var symbolPrefix = _global['__Zone_symbol_prefix'] || '__zone_symbol__';\n\n    function __symbol__(name) {\n      return symbolPrefix + name;\n    }\n\n    _global[__symbol__('legacyPatch')] = function () {\n      var Zone = _global['Zone'];\n\n      Zone.__load_patch('defineProperty', function (global, Zone, api) {\n        api._redefineProperty = _redefineProperty;\n        propertyPatch();\n      });\n\n      Zone.__load_patch('registerElement', function (global, Zone, api) {\n        registerElementPatch(global, api);\n      });\n\n      Zone.__load_patch('EventTargetLegacy', function (global, Zone, api) {\n        eventTargetLegacyPatch(global, api);\n        propertyDescriptorLegacyPatch(api, global);\n      });\n    };\n  })(typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {});\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n\n\n  var taskSymbol = zoneSymbol('zoneTask');\n\n  function patchTimer(window, setName, cancelName, nameSuffix) {\n    var setNative = null;\n    var clearNative = null;\n    setName += nameSuffix;\n    cancelName += nameSuffix;\n    var tasksByHandleId = {};\n\n    function scheduleTask(task) {\n      var data = task.data;\n\n      function timer() {\n        try {\n          task.invoke.apply(this, arguments);\n        } finally {\n          // issue-934, task will be cancelled\n          // even it is a periodic task such as\n          // setInterval\n          if (!(task.data && task.data.isPeriodic)) {\n            if (typeof data.handleId === 'number') {\n              // in non-nodejs env, we remove timerId\n              // from local cache\n              delete tasksByHandleId[data.handleId];\n            } else if (data.handleId) {\n              // Node returns complex objects as handleIds\n              // we remove task reference from timer object\n              data.handleId[taskSymbol] = null;\n            }\n          }\n        }\n      }\n\n      data.args[0] = timer;\n      data.handleId = setNative.apply(window, data.args);\n      return task;\n    }\n\n    function clearTask(task) {\n      return clearNative.call(window, task.data.handleId);\n    }\n\n    setNative = patchMethod(window, setName, function (delegate) {\n      return function (self, args) {\n        if (typeof args[0] === 'function') {\n          var options = {\n            isPeriodic: nameSuffix === 'Interval',\n            delay: nameSuffix === 'Timeout' || nameSuffix === 'Interval' ? args[1] || 0 : undefined,\n            args: args\n          };\n          var task = scheduleMacroTaskWithCurrentZone(setName, args[0], options, scheduleTask, clearTask);\n\n          if (!task) {\n            return task;\n          } // Node.js must additionally support the ref and unref functions.\n\n\n          var handle = task.data.handleId;\n\n          if (typeof handle === 'number') {\n            // for non nodejs env, we save handleId: task\n            // mapping in local cache for clearTimeout\n            tasksByHandleId[handle] = task;\n          } else if (handle) {\n            // for nodejs env, we save task\n            // reference in timerId Object for clearTimeout\n            handle[taskSymbol] = task;\n          } // check whether handle is null, because some polyfill or browser\n          // may return undefined from setTimeout/setInterval/setImmediate/requestAnimationFrame\n\n\n          if (handle && handle.ref && handle.unref && typeof handle.ref === 'function' && typeof handle.unref === 'function') {\n            task.ref = handle.ref.bind(handle);\n            task.unref = handle.unref.bind(handle);\n          }\n\n          if (typeof handle === 'number' || handle) {\n            return handle;\n          }\n\n          return task;\n        } else {\n          // cause an error by calling it directly.\n          return delegate.apply(window, args);\n        }\n      };\n    });\n    clearNative = patchMethod(window, cancelName, function (delegate) {\n      return function (self, args) {\n        var id = args[0];\n        var task;\n\n        if (typeof id === 'number') {\n          // non nodejs env.\n          task = tasksByHandleId[id];\n        } else {\n          // nodejs env.\n          task = id && id[taskSymbol]; // other environments.\n\n          if (!task) {\n            task = id;\n          }\n        }\n\n        if (task && typeof task.type === 'string') {\n          if (task.state !== 'notScheduled' && (task.cancelFn && task.data.isPeriodic || task.runCount === 0)) {\n            if (typeof id === 'number') {\n              delete tasksByHandleId[id];\n            } else if (id) {\n              id[taskSymbol] = null;\n            } // Do not cancel already canceled functions\n\n\n            task.zone.cancelTask(task);\n          }\n        } else {\n          // cause an error by calling it directly.\n          delegate.apply(window, args);\n        }\n      };\n    });\n  }\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n\n\n  function patchCustomElements(_global, api) {\n    var _a = api.getGlobalObjects(),\n        isBrowser = _a.isBrowser,\n        isMix = _a.isMix;\n\n    if (!isBrowser && !isMix || !_global['customElements'] || !('customElements' in _global)) {\n      return;\n    }\n\n    var callbacks = ['connectedCallback', 'disconnectedCallback', 'adoptedCallback', 'attributeChangedCallback'];\n    api.patchCallbacks(api, _global.customElements, 'customElements', 'define', callbacks);\n  }\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n\n\n  function eventTargetPatch(_global, api) {\n    if (Zone[api.symbol('patchEventTarget')]) {\n      // EventTarget is already patched.\n      return;\n    }\n\n    var _a = api.getGlobalObjects(),\n        eventNames = _a.eventNames,\n        zoneSymbolEventNames = _a.zoneSymbolEventNames,\n        TRUE_STR = _a.TRUE_STR,\n        FALSE_STR = _a.FALSE_STR,\n        ZONE_SYMBOL_PREFIX = _a.ZONE_SYMBOL_PREFIX; //  predefine all __zone_symbol__ + eventName + true/false string\n\n\n    for (var i = 0; i < eventNames.length; i++) {\n      var eventName = eventNames[i];\n      var falseEventName = eventName + FALSE_STR;\n      var trueEventName = eventName + TRUE_STR;\n      var symbol = ZONE_SYMBOL_PREFIX + falseEventName;\n      var symbolCapture = ZONE_SYMBOL_PREFIX + trueEventName;\n      zoneSymbolEventNames[eventName] = {};\n      zoneSymbolEventNames[eventName][FALSE_STR] = symbol;\n      zoneSymbolEventNames[eventName][TRUE_STR] = symbolCapture;\n    }\n\n    var EVENT_TARGET = _global['EventTarget'];\n\n    if (!EVENT_TARGET || !EVENT_TARGET.prototype) {\n      return;\n    }\n\n    api.patchEventTarget(_global, [EVENT_TARGET && EVENT_TARGET.prototype]);\n    return true;\n  }\n\n  function patchEvent(global, api) {\n    api.patchEventPrototype(global, api);\n  }\n  /**\n   * @license\n   * Copyright Google LLC All Rights Reserved.\n   *\n   * Use of this source code is governed by an MIT-style license that can be\n   * found in the LICENSE file at https://angular.io/license\n   */\n\n\n  Zone.__load_patch('legacy', function (global) {\n    var legacyPatch = global[Zone.__symbol__('legacyPatch')];\n\n    if (legacyPatch) {\n      legacyPatch();\n    }\n  });\n\n  Zone.__load_patch('timers', function (global) {\n    var set = 'set';\n    var clear = 'clear';\n    patchTimer(global, set, clear, 'Timeout');\n    patchTimer(global, set, clear, 'Interval');\n    patchTimer(global, set, clear, 'Immediate');\n  });\n\n  Zone.__load_patch('requestAnimationFrame', function (global) {\n    patchTimer(global, 'request', 'cancel', 'AnimationFrame');\n    patchTimer(global, 'mozRequest', 'mozCancel', 'AnimationFrame');\n    patchTimer(global, 'webkitRequest', 'webkitCancel', 'AnimationFrame');\n  });\n\n  Zone.__load_patch('blocking', function (global, Zone) {\n    var blockingMethods = ['alert', 'prompt', 'confirm'];\n\n    for (var i = 0; i < blockingMethods.length; i++) {\n      var name_2 = blockingMethods[i];\n      patchMethod(global, name_2, function (delegate, symbol, name) {\n        return function (s, args) {\n          return Zone.current.run(delegate, global, args, name);\n        };\n      });\n    }\n  });\n\n  Zone.__load_patch('EventTarget', function (global, Zone, api) {\n    patchEvent(global, api);\n    eventTargetPatch(global, api); // patch XMLHttpRequestEventTarget's addEventListener/removeEventListener\n\n    var XMLHttpRequestEventTarget = global['XMLHttpRequestEventTarget'];\n\n    if (XMLHttpRequestEventTarget && XMLHttpRequestEventTarget.prototype) {\n      api.patchEventTarget(global, [XMLHttpRequestEventTarget.prototype]);\n    }\n  });\n\n  Zone.__load_patch('MutationObserver', function (global, Zone, api) {\n    patchClass('MutationObserver');\n    patchClass('WebKitMutationObserver');\n  });\n\n  Zone.__load_patch('IntersectionObserver', function (global, Zone, api) {\n    patchClass('IntersectionObserver');\n  });\n\n  Zone.__load_patch('FileReader', function (global, Zone, api) {\n    patchClass('FileReader');\n  });\n\n  Zone.__load_patch('on_property', function (global, Zone, api) {\n    propertyDescriptorPatch(api, global);\n  });\n\n  Zone.__load_patch('customElements', function (global, Zone, api) {\n    patchCustomElements(global, api);\n  });\n\n  Zone.__load_patch('XHR', function (global, Zone) {\n    // Treat XMLHttpRequest as a macrotask.\n    patchXHR(global);\n    var XHR_TASK = zoneSymbol('xhrTask');\n    var XHR_SYNC = zoneSymbol('xhrSync');\n    var XHR_LISTENER = zoneSymbol('xhrListener');\n    var XHR_SCHEDULED = zoneSymbol('xhrScheduled');\n    var XHR_URL = zoneSymbol('xhrURL');\n    var XHR_ERROR_BEFORE_SCHEDULED = zoneSymbol('xhrErrorBeforeScheduled');\n\n    function patchXHR(window) {\n      var XMLHttpRequest = window['XMLHttpRequest'];\n\n      if (!XMLHttpRequest) {\n        // XMLHttpRequest is not available in service worker\n        return;\n      }\n\n      var XMLHttpRequestPrototype = XMLHttpRequest.prototype;\n\n      function findPendingTask(target) {\n        return target[XHR_TASK];\n      }\n\n      var oriAddListener = XMLHttpRequestPrototype[ZONE_SYMBOL_ADD_EVENT_LISTENER];\n      var oriRemoveListener = XMLHttpRequestPrototype[ZONE_SYMBOL_REMOVE_EVENT_LISTENER];\n\n      if (!oriAddListener) {\n        var XMLHttpRequestEventTarget_1 = window['XMLHttpRequestEventTarget'];\n\n        if (XMLHttpRequestEventTarget_1) {\n          var XMLHttpRequestEventTargetPrototype = XMLHttpRequestEventTarget_1.prototype;\n          oriAddListener = XMLHttpRequestEventTargetPrototype[ZONE_SYMBOL_ADD_EVENT_LISTENER];\n          oriRemoveListener = XMLHttpRequestEventTargetPrototype[ZONE_SYMBOL_REMOVE_EVENT_LISTENER];\n        }\n      }\n\n      var READY_STATE_CHANGE = 'readystatechange';\n      var SCHEDULED = 'scheduled';\n\n      function scheduleTask(task) {\n        var data = task.data;\n        var target = data.target;\n        target[XHR_SCHEDULED] = false;\n        target[XHR_ERROR_BEFORE_SCHEDULED] = false; // remove existing event listener\n\n        var listener = target[XHR_LISTENER];\n\n        if (!oriAddListener) {\n          oriAddListener = target[ZONE_SYMBOL_ADD_EVENT_LISTENER];\n          oriRemoveListener = target[ZONE_SYMBOL_REMOVE_EVENT_LISTENER];\n        }\n\n        if (listener) {\n          oriRemoveListener.call(target, READY_STATE_CHANGE, listener);\n        }\n\n        var newListener = target[XHR_LISTENER] = function () {\n          if (target.readyState === target.DONE) {\n            // sometimes on some browsers XMLHttpRequest will fire onreadystatechange with\n            // readyState=4 multiple times, so we need to check task state here\n            if (!data.aborted && target[XHR_SCHEDULED] && task.state === SCHEDULED) {\n              // check whether the xhr has registered onload listener\n              // if that is the case, the task should invoke after all\n              // onload listeners finish.\n              // Also if the request failed without response (status = 0), the load event handler\n              // will not be triggered, in that case, we should also invoke the placeholder callback\n              // to close the XMLHttpRequest::send macroTask.\n              // https://github.com/angular/angular/issues/38795\n              var loadTasks = target[Zone.__symbol__('loadfalse')];\n\n              if (target.status !== 0 && loadTasks && loadTasks.length > 0) {\n                var oriInvoke_1 = task.invoke;\n\n                task.invoke = function () {\n                  // need to load the tasks again, because in other\n                  // load listener, they may remove themselves\n                  var loadTasks = target[Zone.__symbol__('loadfalse')];\n\n                  for (var i = 0; i < loadTasks.length; i++) {\n                    if (loadTasks[i] === task) {\n                      loadTasks.splice(i, 1);\n                    }\n                  }\n\n                  if (!data.aborted && task.state === SCHEDULED) {\n                    oriInvoke_1.call(task);\n                  }\n                };\n\n                loadTasks.push(task);\n              } else {\n                task.invoke();\n              }\n            } else if (!data.aborted && target[XHR_SCHEDULED] === false) {\n              // error occurs when xhr.send()\n              target[XHR_ERROR_BEFORE_SCHEDULED] = true;\n            }\n          }\n        };\n\n        oriAddListener.call(target, READY_STATE_CHANGE, newListener);\n        var storedTask = target[XHR_TASK];\n\n        if (!storedTask) {\n          target[XHR_TASK] = task;\n        }\n\n        sendNative.apply(target, data.args);\n        target[XHR_SCHEDULED] = true;\n        return task;\n      }\n\n      function placeholderCallback() {}\n\n      function clearTask(task) {\n        var data = task.data; // Note - ideally, we would call data.target.removeEventListener here, but it's too late\n        // to prevent it from firing. So instead, we store info for the event listener.\n\n        data.aborted = true;\n        return abortNative.apply(data.target, data.args);\n      }\n\n      var openNative = patchMethod(XMLHttpRequestPrototype, 'open', function () {\n        return function (self, args) {\n          self[XHR_SYNC] = args[2] == false;\n          self[XHR_URL] = args[1];\n          return openNative.apply(self, args);\n        };\n      });\n      var XMLHTTPREQUEST_SOURCE = 'XMLHttpRequest.send';\n      var fetchTaskAborting = zoneSymbol('fetchTaskAborting');\n      var fetchTaskScheduling = zoneSymbol('fetchTaskScheduling');\n      var sendNative = patchMethod(XMLHttpRequestPrototype, 'send', function () {\n        return function (self, args) {\n          if (Zone.current[fetchTaskScheduling] === true) {\n            // a fetch is scheduling, so we are using xhr to polyfill fetch\n            // and because we already schedule macroTask for fetch, we should\n            // not schedule a macroTask for xhr again\n            return sendNative.apply(self, args);\n          }\n\n          if (self[XHR_SYNC]) {\n            // if the XHR is sync there is no task to schedule, just execute the code.\n            return sendNative.apply(self, args);\n          } else {\n            var options = {\n              target: self,\n              url: self[XHR_URL],\n              isPeriodic: false,\n              args: args,\n              aborted: false\n            };\n            var task = scheduleMacroTaskWithCurrentZone(XMLHTTPREQUEST_SOURCE, placeholderCallback, options, scheduleTask, clearTask);\n\n            if (self && self[XHR_ERROR_BEFORE_SCHEDULED] === true && !options.aborted && task.state === SCHEDULED) {\n              // xhr request throw error when send\n              // we should invoke task instead of leaving a scheduled\n              // pending macroTask\n              task.invoke();\n            }\n          }\n        };\n      });\n      var abortNative = patchMethod(XMLHttpRequestPrototype, 'abort', function () {\n        return function (self, args) {\n          var task = findPendingTask(self);\n\n          if (task && typeof task.type == 'string') {\n            // If the XHR has already completed, do nothing.\n            // If the XHR has already been aborted, do nothing.\n            // Fix #569, call abort multiple times before done will cause\n            // macroTask task count be negative number\n            if (task.cancelFn == null || task.data && task.data.aborted) {\n              return;\n            }\n\n            task.zone.cancelTask(task);\n          } else if (Zone.current[fetchTaskAborting] === true) {\n            // the abort is called from fetch polyfill, we need to call native abort of XHR.\n            return abortNative.apply(self, args);\n          } // Otherwise, we are trying to abort an XHR which has not yet been sent, so there is no\n          // task\n          // to cancel. Do nothing.\n\n        };\n      });\n    }\n  });\n\n  Zone.__load_patch('geolocation', function (global) {\n    /// GEO_LOCATION\n    if (global['navigator'] && global['navigator'].geolocation) {\n      patchPrototype(global['navigator'].geolocation, ['getCurrentPosition', 'watchPosition']);\n    }\n  });\n\n  Zone.__load_patch('PromiseRejectionEvent', function (global, Zone) {\n    // handle unhandled promise rejection\n    function findPromiseRejectionHandler(evtName) {\n      return function (e) {\n        var eventTasks = findEventTasks(global, evtName);\n        eventTasks.forEach(function (eventTask) {\n          // windows has added unhandledrejection event listener\n          // trigger the event listener\n          var PromiseRejectionEvent = global['PromiseRejectionEvent'];\n\n          if (PromiseRejectionEvent) {\n            var evt = new PromiseRejectionEvent(evtName, {\n              promise: e.promise,\n              reason: e.rejection\n            });\n            eventTask.invoke(evt);\n          }\n        });\n      };\n    }\n\n    if (global['PromiseRejectionEvent']) {\n      Zone[zoneSymbol('unhandledPromiseRejectionHandler')] = findPromiseRejectionHandler('unhandledrejection');\n      Zone[zoneSymbol('rejectionHandledHandler')] = findPromiseRejectionHandler('rejectionhandled');\n    }\n  });\n});","/** PURE_IMPORTS_START tslib,_Subscriber PURE_IMPORTS_END */\nimport * as tslib_1 from \"tslib\";\nimport { Subscriber } from '../Subscriber';\nexport function refCount() {\n  return function refCountOperatorFunction(source) {\n    return source.lift(new RefCountOperator(source));\n  };\n}\n\nvar RefCountOperator = /*@__PURE__*/function () {\n  function RefCountOperator(connectable) {\n    this.connectable = connectable;\n  }\n\n  RefCountOperator.prototype.call = function (subscriber, source) {\n    var connectable = this.connectable;\n    connectable._refCount++;\n    var refCounter = new RefCountSubscriber(subscriber, connectable);\n    var subscription = source.subscribe(refCounter);\n\n    if (!refCounter.closed) {\n      refCounter.connection = connectable.connect();\n    }\n\n    return subscription;\n  };\n\n  return RefCountOperator;\n}();\n\nvar RefCountSubscriber = /*@__PURE__*/function (_super) {\n  tslib_1.__extends(RefCountSubscriber, _super);\n\n  function RefCountSubscriber(destination, connectable) {\n    var _this = _super.call(this, destination) || this;\n\n    _this.connectable = connectable;\n    return _this;\n  }\n\n  RefCountSubscriber.prototype._unsubscribe = function () {\n    var connectable = this.connectable;\n\n    if (!connectable) {\n      this.connection = null;\n      return;\n    }\n\n    this.connectable = null;\n    var refCount = connectable._refCount;\n\n    if (refCount <= 0) {\n      this.connection = null;\n      return;\n    }\n\n    connectable._refCount = refCount - 1;\n\n    if (refCount > 1) {\n      this.connection = null;\n      return;\n    }\n\n    var connection = this.connection;\n    var sharedConnection = connectable._connection;\n    this.connection = null;\n\n    if (sharedConnection && (!connection || sharedConnection === connection)) {\n      sharedConnection.unsubscribe();\n    }\n  };\n\n  return RefCountSubscriber;\n}(Subscriber);","/** PURE_IMPORTS_START tslib,_Subject,_Observable,_Subscriber,_Subscription,_operators_refCount PURE_IMPORTS_END */\nimport * as tslib_1 from \"tslib\";\nimport { SubjectSubscriber } from '../Subject';\nimport { Observable } from '../Observable';\nimport { Subscriber } from '../Subscriber';\nimport { Subscription } from '../Subscription';\nimport { refCount as higherOrderRefCount } from '../operators/refCount';\n\nvar ConnectableObservable = /*@__PURE__*/function (_super) {\n  tslib_1.__extends(ConnectableObservable, _super);\n\n  function ConnectableObservable(source, subjectFactory) {\n    var _this = _super.call(this) || this;\n\n    _this.source = source;\n    _this.subjectFactory = subjectFactory;\n    _this._refCount = 0;\n    _this._isComplete = false;\n    return _this;\n  }\n\n  ConnectableObservable.prototype._subscribe = function (subscriber) {\n    return this.getSubject().subscribe(subscriber);\n  };\n\n  ConnectableObservable.prototype.getSubject = function () {\n    var subject = this._subject;\n\n    if (!subject || subject.isStopped) {\n      this._subject = this.subjectFactory();\n    }\n\n    return this._subject;\n  };\n\n  ConnectableObservable.prototype.connect = function () {\n    var connection = this._connection;\n\n    if (!connection) {\n      this._isComplete = false;\n      connection = this._connection = new Subscription();\n      connection.add(this.source.subscribe(new ConnectableSubscriber(this.getSubject(), this)));\n\n      if (connection.closed) {\n        this._connection = null;\n        connection = Subscription.EMPTY;\n      }\n    }\n\n    return connection;\n  };\n\n  ConnectableObservable.prototype.refCount = function () {\n    return higherOrderRefCount()(this);\n  };\n\n  return ConnectableObservable;\n}(Observable);\n\nexport { ConnectableObservable };\nexport var connectableObservableDescriptor = /*@__PURE__*/function () {\n  var connectableProto = ConnectableObservable.prototype;\n  return {\n    operator: {\n      value: null\n    },\n    _refCount: {\n      value: 0,\n      writable: true\n    },\n    _subject: {\n      value: null,\n      writable: true\n    },\n    _connection: {\n      value: null,\n      writable: true\n    },\n    _subscribe: {\n      value: connectableProto._subscribe\n    },\n    _isComplete: {\n      value: connectableProto._isComplete,\n      writable: true\n    },\n    getSubject: {\n      value: connectableProto.getSubject\n    },\n    connect: {\n      value: connectableProto.connect\n    },\n    refCount: {\n      value: connectableProto.refCount\n    }\n  };\n}();\n\nvar ConnectableSubscriber = /*@__PURE__*/function (_super) {\n  tslib_1.__extends(ConnectableSubscriber, _super);\n\n  function ConnectableSubscriber(destination, connectable) {\n    var _this = _super.call(this, destination) || this;\n\n    _this.connectable = connectable;\n    return _this;\n  }\n\n  ConnectableSubscriber.prototype._error = function (err) {\n    this._unsubscribe();\n\n    _super.prototype._error.call(this, err);\n  };\n\n  ConnectableSubscriber.prototype._complete = function () {\n    this.connectable._isComplete = true;\n\n    this._unsubscribe();\n\n    _super.prototype._complete.call(this);\n  };\n\n  ConnectableSubscriber.prototype._unsubscribe = function () {\n    var connectable = this.connectable;\n\n    if (connectable) {\n      this.connectable = null;\n      var connection = connectable._connection;\n      connectable._refCount = 0;\n      connectable._subject = null;\n      connectable._connection = null;\n\n      if (connection) {\n        connection.unsubscribe();\n      }\n    }\n  };\n\n  return ConnectableSubscriber;\n}(SubjectSubscriber);\n\nvar RefCountOperator = /*@__PURE__*/function () {\n  function RefCountOperator(connectable) {\n    this.connectable = connectable;\n  }\n\n  RefCountOperator.prototype.call = function (subscriber, source) {\n    var connectable = this.connectable;\n    connectable._refCount++;\n    var refCounter = new RefCountSubscriber(subscriber, connectable);\n    var subscription = source.subscribe(refCounter);\n\n    if (!refCounter.closed) {\n      refCounter.connection = connectable.connect();\n    }\n\n    return subscription;\n  };\n\n  return RefCountOperator;\n}();\n\nvar RefCountSubscriber = /*@__PURE__*/function (_super) {\n  tslib_1.__extends(RefCountSubscriber, _super);\n\n  function RefCountSubscriber(destination, connectable) {\n    var _this = _super.call(this, destination) || this;\n\n    _this.connectable = connectable;\n    return _this;\n  }\n\n  RefCountSubscriber.prototype._unsubscribe = function () {\n    var connectable = this.connectable;\n\n    if (!connectable) {\n      this.connection = null;\n      return;\n    }\n\n    this.connectable = null;\n    var refCount = connectable._refCount;\n\n    if (refCount <= 0) {\n      this.connection = null;\n      return;\n    }\n\n    connectable._refCount = refCount - 1;\n\n    if (refCount > 1) {\n      this.connection = null;\n      return;\n    }\n\n    var connection = this.connection;\n    var sharedConnection = connectable._connection;\n    this.connection = null;\n\n    if (sharedConnection && (!connection || sharedConnection === connection)) {\n      sharedConnection.unsubscribe();\n    }\n  };\n\n  return RefCountSubscriber;\n}(Subscriber);","/** PURE_IMPORTS_START _observable_ConnectableObservable PURE_IMPORTS_END */\nimport { connectableObservableDescriptor } from '../observable/ConnectableObservable';\nexport function multicast(subjectOrSubjectFactory, selector) {\n  return function multicastOperatorFunction(source) {\n    var subjectFactory;\n\n    if (typeof subjectOrSubjectFactory === 'function') {\n      subjectFactory = subjectOrSubjectFactory;\n    } else {\n      subjectFactory = function subjectFactory() {\n        return subjectOrSubjectFactory;\n      };\n    }\n\n    if (typeof selector === 'function') {\n      return source.lift(new MulticastOperator(subjectFactory, selector));\n    }\n\n    var connectable = Object.create(source, connectableObservableDescriptor);\n    connectable.source = source;\n    connectable.subjectFactory = subjectFactory;\n    return connectable;\n  };\n}\n\nvar MulticastOperator = /*@__PURE__*/function () {\n  function MulticastOperator(subjectFactory, selector) {\n    this.subjectFactory = subjectFactory;\n    this.selector = selector;\n  }\n\n  MulticastOperator.prototype.call = function (subscriber, source) {\n    var selector = this.selector;\n    var subject = this.subjectFactory();\n    var subscription = selector(subject).subscribe(subscriber);\n    subscription.add(source.subscribe(subject));\n    return subscription;\n  };\n\n  return MulticastOperator;\n}();\n\nexport { MulticastOperator };","/** PURE_IMPORTS_START _multicast,_refCount,_Subject PURE_IMPORTS_END */\nimport { multicast } from './multicast';\nimport { refCount } from './refCount';\nimport { Subject } from '../Subject';\n\nfunction shareSubjectFactory() {\n  return new Subject();\n}\n\nexport function share() {\n  return function (source) {\n    return refCount()(multicast(shareSubjectFactory)(source));\n  };\n}","/** PURE_IMPORTS_START _mergeMap,_util_identity PURE_IMPORTS_END */\nimport { mergeMap } from './mergeMap';\nimport { identity } from '../util/identity';\nexport function mergeAll(concurrent) {\n  if (concurrent === void 0) {\n    concurrent = Number.POSITIVE_INFINITY;\n  }\n\n  return mergeMap(identity, concurrent);\n}","/** PURE_IMPORTS_START _Observable,_util_isScheduler,_operators_mergeAll,_fromArray PURE_IMPORTS_END */\nimport { Observable } from '../Observable';\nimport { isScheduler } from '../util/isScheduler';\nimport { mergeAll } from '../operators/mergeAll';\nimport { fromArray } from './fromArray';\nexport function merge() {\n  var observables = [];\n\n  for (var _i = 0; _i < arguments.length; _i++) {\n    observables[_i] = arguments[_i];\n  }\n\n  var concurrent = Number.POSITIVE_INFINITY;\n  var scheduler = null;\n  var last = observables[observables.length - 1];\n\n  if (isScheduler(last)) {\n    scheduler = observables.pop();\n\n    if (observables.length > 1 && typeof observables[observables.length - 1] === 'number') {\n      concurrent = observables.pop();\n    }\n  } else if (typeof last === 'number') {\n    concurrent = observables.pop();\n  }\n\n  if (scheduler === null && observables.length === 1 && observables[0] instanceof Observable) {\n    return observables[0];\n  }\n\n  return mergeAll(concurrent)(fromArray(observables, scheduler));\n}","module.exports = function (module) {\n  if (!module.webpackPolyfill) {\n    module.deprecate = function () {};\n\n    module.paths = []; // module.parent = undefined by default\n\n    if (!module.children) module.children = [];\n    Object.defineProperty(module, \"loaded\", {\n      enumerable: true,\n      get: function get() {\n        return module.l;\n      }\n    });\n    Object.defineProperty(module, \"id\", {\n      enumerable: true,\n      get: function get() {\n        return module.i;\n      }\n    });\n    module.webpackPolyfill = 1;\n  }\n\n  return module;\n};","/* globals __webpack_amd_options__ */\nmodule.exports = __webpack_amd_options__;\n","/** PURE_IMPORTS_START tslib,_Subscriber PURE_IMPORTS_END */\nimport * as tslib_1 from \"tslib\";\nimport { Subscriber } from '../Subscriber';\nexport function filter(predicate, thisArg) {\n  return function filterOperatorFunction(source) {\n    return source.lift(new FilterOperator(predicate, thisArg));\n  };\n}\n\nvar FilterOperator = /*@__PURE__*/function () {\n  function FilterOperator(predicate, thisArg) {\n    this.predicate = predicate;\n    this.thisArg = thisArg;\n  }\n\n  FilterOperator.prototype.call = function (subscriber, source) {\n    return source.subscribe(new FilterSubscriber(subscriber, this.predicate, this.thisArg));\n  };\n\n  return FilterOperator;\n}();\n\nvar FilterSubscriber = /*@__PURE__*/function (_super) {\n  tslib_1.__extends(FilterSubscriber, _super);\n\n  function FilterSubscriber(destination, predicate, thisArg) {\n    var _this = _super.call(this, destination) || this;\n\n    _this.predicate = predicate;\n    _this.thisArg = thisArg;\n    _this.count = 0;\n    return _this;\n  }\n\n  FilterSubscriber.prototype._next = function (value) {\n    var result;\n\n    try {\n      result = this.predicate.call(this.thisArg, value, this.count++);\n    } catch (err) {\n      this.destination.error(err);\n      return;\n    }\n\n    if (result) {\n      this.destination.next(value);\n    }\n  };\n\n  return FilterSubscriber;\n}(Subscriber);","// Module\nvar code = \"<nav class=\\\"navbar navbar-expand-lg navbar-light bg-light fixed-top\\\"> <div class=\\\"container\\\"> <button type=\\\"button\\\" class=\\\"btn btn-outline-secondary\\\" (click)=\\\"deselectCategory()\\\" *ngIf=\\\"selectedCategory\\\"> <svg width=\\\"2em\\\" height=\\\"2em\\\" viewBox=\\\"0 0 16 16\\\" class=\\\"bi bi-arrow-left-short\\\" fill=\\\"currentColor\\\" xmlns=\\\"http://www.w3.org/2000/svg\\\"> <path fill-rule=\\\"evenodd\\\" d=\\\"M12 8a.5.5 0 0 1-.5.5H5.707l2.147 2.146a.5.5 0 0 1-.708.708l-3-3a.5.5 0 0 1 0-.708l3-3a.5.5 0 1 1 .708.708L5.707 7.5H11.5a.5.5 0 0 1 .5.5z\\\"></path> </svg> </button> <img [src]=\\\"client.logo_url\\\" *ngIf=\\\"client && client.logo_url\\\" style=\\\"margin:auto;max-height:50px;max-width:60%\\\"> <span class=\\\"navbar-brand mb-0 h1\\\" style=\\\"margin:auto\\\" *ngIf=\\\"client && !client.logo_url\\\">{{ client.name }}</span> <button type=\\\"button\\\" class=\\\"btn btn-outline-secondary\\\" *ngIf=\\\"order\\\" (click)=\\\"goToOrder()\\\"> <svg xmlns=\\\"http://www.w3.org/2000/svg\\\" width=\\\"16\\\" height=\\\"16\\\" fill=\\\"currentColor\\\" class=\\\"bi bi-cart\\\" viewBox=\\\"0 0 16 16\\\"> <path d=\\\"M0 1.5A.5.5 0 0 1 .5 1H2a.5.5 0 0 1 .485.379L2.89 3H14.5a.5.5 0 0 1 .491.592l-1.5 8A.5.5 0 0 1 13 12H4a.5.5 0 0 1-.491-.408L2.01 3.607 1.61 2H.5a.5.5 0 0 1-.5-.5zM3.102 4l1.313 7h8.17l1.313-7H3.102zM5 12a2 2 0 1 0 0 4 2 2 0 0 0 0-4zm7 0a2 2 0 1 0 0 4 2 2 0 0 0 0-4zm-7 1a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm7 0a1 1 0 1 1 0 2 1 1 0 0 1 0-2z\\\"/> </svg> {{ order.order_items.length }} </button> </div> </nav> <div class=\\\"container\\\"> <img [src]=\\\"client.background_image_url\\\" width=\\\"100%\\\" *ngIf=\\\"client && client.background_image_url\\\"> <div class=\\\"mt-4 text-center\\\" *ngIf=\\\"client && (client.catalog_title || client.catch_phrase)\\\"> <h2 [innerHTML]=\\\"client.catalog_title\\\"></h2> <p class=\\\"lead\\\" [innerHTML]=\\\"client.catch_phrase\\\"></p> </div> <div class=\\\"mt-4 row row-cols-1 row-cols-md-2\\\" *ngIf=\\\"client && !selectedCategory\\\"> <div class=\\\"col mb-4\\\" *ngFor=\\\"let category of client.online_categories\\\"> <div class=\\\"card\\\"> <img [src]=\\\"category.image_url\\\" class=\\\"card-img-top\\\" *ngIf=\\\"category.image_url\\\"> <div class=\\\"card-body\\\"> <h5 class=\\\"card-title\\\" [innerHTML]=\\\"category.title\\\"></h5> <p class=\\\"card-text\\\" [innerHTML]=\\\"category.description\\\"></p> <a class=\\\"btn btn-secondary btn-lg\\\" role=\\\"button\\\" aria-pressed=\\\"true\\\" (click)=\\\"selectCategory(category)\\\">{{ category.button_text || 'Voir les produits' }}</a> </div> </div> </div> </div> <div *ngIf=\\\"selectedCategory\\\"> <div class=\\\"row row-cols-1 row-cols-md-2 mt-4\\\"> <div class=\\\"col mb-3\\\" *ngIf=\\\"selectedCategory.dates_filter\\\"> <select class=\\\"form-control\\\" [(ngModel)]=\\\"selectedDatesFilter\\\" (ngModelChange)=\\\"addDatesFilter()\\\"> <option value=\\\"null\\\">{{ selectedCategory.dates_filter_label || 'Filtrer par dates' }}</option> <option *ngFor=\\\"let dates of datesFilters(); index as i\\\" value=\\\"{{ dates }}\\\">du {{dates[0] | date: 'd/MM/yy'}} au {{dates[1] | date: 'd/MM/yy'}}</option> </select> </div> <div class=\\\"col mb-3\\\" *ngIf=\\\"selectedCategory.duration_filter\\\"> <select class=\\\"form-control\\\" [(ngModel)]=\\\"selectedDurationFilter\\\" (ngModelChange)=\\\"addDurationFilter()\\\"> <option value=\\\"null\\\">{{ selectedCategory.duration_filter_label || 'Filtrer par durée' }}</option> <option *ngFor=\\\"let duration of durationFilters()\\\" value=\\\"{{ duration }}\\\" [innerHTML]=\\\"duration\\\"></option> </select> </div> <div class=\\\"col mb-3\\\" *ngIf=\\\"selectedCategory.age_filter\\\"> <select class=\\\"form-control\\\" [(ngModel)]=\\\"selectedAgeFilter\\\" (ngModelChange)=\\\"addAgeFilter()\\\"> <option value=\\\"null\\\">{{ selectedCategory.age_filter_label || 'Filtrer par age' }}</option> <option *ngFor=\\\"let age of ageFilters()\\\" value=\\\"{{ age }}\\\" [innerHTML]=\\\"age\\\"></option> </select> </div> <div class=\\\"col mb-3\\\" *ngIf=\\\"selectedCategory.kind_filter\\\"> <select class=\\\"form-control\\\" [(ngModel)]=\\\"selectedKindFilter\\\" (ngModelChange)=\\\"addKindFilter()\\\"> <option value=\\\"null\\\">{{ selectedCategory.kind_filter_label || 'Filtrer par sorte' }}</option> <option *ngFor=\\\"let kind of kindFilters()\\\" value=\\\"{{ kind }}\\\" [innerHTML]=\\\"kind\\\"></option> </select> </div> </div> <div class=\\\"row row-cols-1 row-cols-md-2 mt-4\\\"> <div class=\\\"col mb-4\\\" *ngFor=\\\"let product of availableProducts\\\"> <div class=\\\"card product\\\"> <img [src]=\\\"product.image_url\\\" class=\\\"card-img-top\\\" *ngIf=\\\"product.image_url\\\"> <div class=\\\"card-body\\\" [style.background-color]=\\\"client.preferences.product_card_background_color\\\" [style.background]=\\\"client.preferences.product_card_background\\\" [style.color]=\\\"client.preferences.product_card_color\\\"> <h5 class=\\\"card-title\\\" [innerHTML]=\\\"product.title\\\"></h5> <p class=\\\"card-text\\\" [innerHTML]=\\\"product.description\\\"></p> <span *ngIf=\\\"product.status\\\" [innerHTML]=\\\"product.status\\\" class=\\\"badge bg-light text-dark\\\"></span> </div> <ul class=\\\"list-group list-group-flush\\\"> <li class=\\\"list-group-item\\\" *ngFor=\\\"let price of product.prices\\\"> <span [innerHTML]=\\\"price.name\\\"></span> <span class=\\\"price\\\"> <button type=\\\"button\\\" class=\\\"btn btn-secondary btn-sm add-to-cart\\\" (click)=\\\"addProduct(product, $event)\\\"> <span>{{ product.button_prefix_text || 'Acheter' }} {{ price.price | number: '1.2-2'}} {{ client.currency }}</span> <svg xmlns=\\\"http://www.w3.org/2000/svg\\\" width=\\\"20\\\" height=\\\"20\\\" fill=\\\"currentColor\\\" class=\\\"bi bi-check-circle-fill\\\" viewBox=\\\"0 0 16 16\\\"> <path d=\\\"M16 8A8 8 0 1 1 0 8a8 8 0 0 1 16 0zm-3.97-3.03a.75.75 0 0 0-1.08.022L7.477 9.417 5.384 7.323a.75.75 0 0 0-1.06 1.06L6.97 11.03a.75.75 0 0 0 1.079-.02l3.992-4.99a.75.75 0 0 0-.01-1.05z\\\"/> </svg> </button> </span> </li> </ul> </div> </div> </div> </div> </div> \";\n// Exports\nmodule.exports = code;","// Run this Angular example by adding the following HTML markup to your view:\n//\n// <hello-angular>Loading...</hello-angular>\n//\n// <%= javascript_pack_tag 'hello_angular' %>\n\nrequire('../catalog')\n","import { Component, OnInit, Input, ElementRef } from '@angular/core';\nimport { HttpClient, HttpHeaders } from '@angular/common/http';\nimport { CookieService } from 'ngx-cookie-service';\n\nimport * as _ from 'lodash';\nimport templateString from './app.component.html';\n\n@Component({\n  selector: 'catalog',\n  template: templateString\n})\n\nexport class AppComponent implements OnInit {\n  public client: any\n  public selectedCategory: any\n  public order: any\n  public selectedDatesFilter: any = 'null'\n  public selectedKindFilter: any = 'null'\n  public selectedDurationFilter: any = 'null'\n  public selectedAgeFilter: any = 'null'\n  categoryId: any\n  activeFilters: any = {}\n  activeMetadataFilters: any = {}\n  availableProducts: any\n\n  constructor(private _http: HttpClient, private cookieService: CookieService, private elementRef: ElementRef) {\n    this.categoryId = this.elementRef.nativeElement.getAttribute('category');\n  }\n\n  ngOnInit() {\n    this.getClientDetails()\n    this.getOrder()\n  }\n\n  selectCategory(category) {\n    this.selectedCategory = category\n    if (this.selectedCategory.order_metadata_key) {\n      this.availableProducts = _.orderBy(this.selectedCategory.products, 'metadata.' + this.selectedCategory.order_metadata_key)\n    } else {\n      this.availableProducts = this.selectedCategory.products\n    }\n    window.history.pushState({ foo: this.client.name }, '', '/clients/' + this.client.id + '/categories/' + category.reference);\n    window.scrollTo(0,0);\n  }\n\n  deselectCategory() {\n    this.selectedCategory = null\n    this.selectedDatesFilter = ''\n    this.availableProducts = null\n    window.history.pushState({ foo: this.client.name }, '', '/clients/' + this.client.id);\n    window.scrollTo(0,0);\n  }\n\n  getClientDetails() {\n    this._http.get(window.location.href + '.json', { responseType: 'json' })\n    .subscribe((data) => {\n      this.client = data\n      let images = []\n\n      this.client.online_categories.forEach(category => {\n        if (category.image_url) {\n          images.push(category.image_url)\n        }\n\n        category.products.forEach(product => {\n          if (product.image_url) {\n            images.push(product.image_url)\n          }\n        })\n\n        if (this.categoryId && this.categoryId == category.reference) {\n          this.selectCategory(category)\n        }\n      })\n\n      this.pload(images)\n    })\n  }\n\n  datesFilters() {\n    let filters = this.selectedCategory.products.map(product => {\n      if (product.start_date && product.end_date) {\n        return [product.start_date, product.end_date]\n      } else {\n        return null\n      }\n    })\n    filters = _.uniqWith(_.compact(filters), _.isEqual)\n\n    return filters\n  }\n\n  addDatesFilter() {\n    if (this.selectedDatesFilter != 'null') {\n      let parsedDate = this.selectedDatesFilter.split(',')\n\n      this.activeFilters.start_date = parsedDate[0]\n      this.activeFilters.end_date = parsedDate[1]\n    } else {\n      delete this.activeFilters.start_date\n      delete this.activeFilters.end_date\n    }\n\n    this.applyFilters()\n  }\n\n  kindFilters() {\n    let filters = this.selectedCategory.products.map(product => {\n      return product.kind\n    })\n\n    filters = _.uniq(_.compact(filters))\n\n    return filters\n  }\n\n  addKindFilter() {\n    if (this.selectedKindFilter != 'null') {\n      this.activeFilters.kind = this.selectedKindFilter\n    } else {\n      delete this.activeFilters.kind\n    }\n\n    this.applyFilters()\n  }\n\n  durationFilters() {\n    let filters = this.selectedCategory.products.map(product => {\n      if (product.metadata) {\n        return product.metadata.duration\n      }\n    })\n\n    filters = _.uniq(_.compact(filters)).sort()\n\n    return filters\n  }\n\n  addDurationFilter() {\n    if (this.selectedDurationFilter != 'null') {\n      this.activeMetadataFilters.duration = this.selectedDurationFilter\n    } else {\n      delete this.activeMetadataFilters.duration\n    }\n\n    this.applyFilters()\n  }\n\n  ageFilters() {\n    return [5,6,7,8,9,10,11,12,13,14,15,16,17,18];\n  }\n\n  addAgeFilter() {\n    if (this.selectedAgeFilter != 'null') {\n      this.activeMetadataFilters.age = this.selectedAgeFilter\n    } else {\n      delete this.activeMetadataFilters.age\n    }\n\n    this.applyFilters()\n  }\n\n  applyFilters() {\n    if (this.selectedCategory.order_metadata_key) {\n      this.availableProducts = _.orderBy(this.selectedCategory.products, 'metadata.' + this.selectedCategory.order_metadata_key)\n    }\n\n    this.availableProducts = _.filter(this.selectedCategory.products, this.activeFilters)\n\n    if (this.activeMetadataFilters.duration) {\n      this.availableProducts = _.filter(this.availableProducts, ['metadata.duration', this.activeMetadataFilters.duration])\n    }\n\n    if (this.activeMetadataFilters.age) {\n      let age_filter = this.activeMetadataFilters.age\n      this.availableProducts = _.filter(this.availableProducts, function(item) {\n        return item.metadata && item.metadata.max_age && item.metadata.min_age && parseInt(item.metadata.max_age) >= age_filter && parseInt(item.metadata.min_age) <= age_filter\n      });\n    }\n  }\n\n  getOrder() {\n    let key = this.cookieService.get('cart-key')\n\n    if (key) {\n      this._http.get('/orders/' + key + '.json', { responseType: 'json' })\n      .subscribe((data) => {\n        this.order = data\n      });\n    }\n  }\n\n  goToOrder() {\n    window.location.href = '//' + window.location.host + '/orders/' + this.cookieService.get('cart-key')\n  }\n\n  addProduct(product, event) {\n    let element = event.target\n\n    if (event.target.tagName == 'SPAN') {\n     element = element.parentElement\n    }\n\n    element.setAttribute('disabled', 'disabled')\n    element.classList.add('added')\n\n    setTimeout(() => {\n      element.classList.remove('added')\n      setTimeout(() => {\n        element.removeAttribute('disabled')\n      }, 20)\n    }, 1500);\n\n    const httpOptions = {\n      headers: new HttpHeaders({\n        'X-CSRF-Token': document.querySelector('meta[name=csrf-token]').getAttribute('content')\n      })\n    }\n\n    this._http.post('/clients/' + this.client.id + '/orders/add_product.json', {\n      order: {\n        key: this.cookieService.get('cart-key'),\n        products: [product]\n      }\n    }, httpOptions).subscribe((response: any) => {\n      this.cookieService.set('cart-key', response.key, null, '/')\n      this.order = response\n    });\n  }\n\n  pload(...args: any[]):void {\n    let imgs = []\n    for (var i = 0; i < args.length; i++) {\n      imgs[i] = new Image();\n      imgs[i].src = args[i];\n    }\n  }\n}\n","import { BrowserModule } from '@angular/platform-browser';\nimport { NgModule } from '@angular/core';\nimport { FormsModule, ReactiveFormsModule } from \"@angular/forms\";\nimport { HttpClientModule } from '@angular/common/http';\n\nimport { AppComponent } from './app.component';\n\n@NgModule({\n  declarations: [\n    AppComponent\n  ],\n  imports: [\n    BrowserModule,\n    HttpClientModule,\n    FormsModule,\n    ReactiveFormsModule\n  ],\n  providers: [],\n  bootstrap: [AppComponent]\n})\nexport class AppModule { }\n","import './polyfills.ts';\n\nimport { platformBrowserDynamic } from '@angular/platform-browser-dynamic';\nimport { AppModule } from './app/app.module';\n\ndocument.addEventListener('DOMContentLoaded', () => {\n  platformBrowserDynamic().bootstrapModule(AppModule);\n});\n"],"sourceRoot":""}