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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source 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 function getClosureSafeProperty(objWithPropertyToExtract: T): string {\n for (let key in objWithPropertyToExtract) {\n if (objWithPropertyToExtract[key] === getClosureSafeProperty as any) {\n return key;\n }\n }\n throw Error('Could not find renamed property on target object.');\n}\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 */\nexport function fillProperties(target: {[key: string]: string}, source: {[key: string]: string}) {\n for (const 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\nexport function stringify(token: any): string {\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 `${token.overriddenName}`;\n }\n\n if (token.name) {\n return `${token.name}`;\n }\n\n const res = token.toString();\n\n if (res == null) {\n return '' + res;\n }\n\n const newLineIndex = res.indexOf('\\n');\n return newLineIndex === -1 ? res : res.substring(0, newLineIndex);\n}\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 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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 */\nexport function forwardRef(forwardRefFn: ForwardRefFn): Type {\n (forwardRefFn).__forward_ref__ = forwardRef;\n (forwardRefFn).toString = function() {\n return stringify(this());\n };\n return (>forwardRefFn);\n}\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 */\nexport function resolveForwardRef(type: T): T {\n return isForwardRef(type) ? type() : type;\n}\n\n/** Checks whether a function is wrapped by a `forwardRef`. */\nexport function isForwardRef(fn: any): fn is() => any {\n return typeof fn === 'function' && fn.hasOwnProperty(__forward_ref__) &&\n fn.__forward_ref__ === forwardRef;\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***************************************************************************** */\r\n/* global Reflect, Promise */\r\n\r\nvar extendStatics = function(d, b) {\r\n extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\r\n return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? 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(function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });\r\n}) : (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n o[k2] = m[k];\r\n});\r\n\r\nexport function __exportStar(m, exports) {\r\n for (var p in m) if (p !== \"default\" && !exports.hasOwnProperty(p)) __createBinding(exports, m, p);\r\n}\r\n\r\nexport function __values(o) {\r\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n if (m) return m.call(o);\r\n if (o && typeof o.length === \"number\") return {\r\n next: function () {\r\n if (o && i >= o.length) o = void 0;\r\n return { value: o && o[i++], done: !o };\r\n }\r\n };\r\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n if (!m) return o;\r\n var i = m.call(o), r, ar = [], e;\r\n try {\r\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n }\r\n catch (error) { e = { error: error }; }\r\n finally {\r\n try {\r\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n }\r\n finally { if (e) throw e.error; }\r\n }\r\n return ar;\r\n}\r\n\r\nexport function __spread() {\r\n for (var ar = [], i = 0; i < arguments.length; i++)\r\n ar = ar.concat(__read(arguments[i]));\r\n return ar;\r\n}\r\n\r\nexport function __spreadArrays() {\r\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n r[k] = a[j];\r\n return r;\r\n};\r\n\r\nexport function __await(v) {\r\n return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === \"return\" } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator], i;\r\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 () { return this; }, i);\r\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n __setModuleDefault(result, mod);\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, privateMap) {\r\n if (!privateMap.has(receiver)) {\r\n throw new TypeError(\"attempted to get private field on non-instance\");\r\n }\r\n return privateMap.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, privateMap, value) {\r\n if (!privateMap.has(receiver)) {\r\n throw new TypeError(\"attempted to set private field on non-instance\");\r\n }\r\n privateMap.set(receiver, value);\r\n return value;\r\n}\r\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n// Base URL for the error details page.\n// Keep this value in sync with a similar const in\n// `packages/compiler-cli/src/ngtsc/diagnostics/src/error_code.ts`.\nconst ERROR_DETAILS_PAGE_BASE_URL = 'https://angular.io/errors';\n\nexport const enum RuntimeErrorCode {\n // Internal Errors\n\n // Change Detection Errors\n EXPRESSION_CHANGED_AFTER_CHECKED = '100',\n\n // Dependency Injection Errors\n CYCLIC_DI_DEPENDENCY = '200',\n PROVIDER_NOT_FOUND = '201',\n\n // Template Errors\n MULTIPLE_COMPONENTS_MATCH = '300',\n EXPORT_NOT_FOUND = '301',\n PIPE_NOT_FOUND = '302',\n UNKNOWN_BINDING = '303',\n UNKNOWN_ELEMENT = '304',\n\n // Styling Errors\n\n // Declarations Errors\n\n // i18n Errors\n\n // Compilation Errors\n}\n\nexport class RuntimeError extends Error {\n constructor(public code: RuntimeErrorCode, message: string) {\n super(formatRuntimeError(code, message));\n }\n}\n\n// Contains a set of error messages that have details guides at angular.io.\n// Full list of available error guides can be found at https://angular.io/errors\n/* tslint:disable:no-toplevel-property-access */\nexport const RUNTIME_ERRORS_WITH_GUIDES = new Set([\n RuntimeErrorCode.EXPRESSION_CHANGED_AFTER_CHECKED,\n RuntimeErrorCode.CYCLIC_DI_DEPENDENCY,\n RuntimeErrorCode.PROVIDER_NOT_FOUND,\n RuntimeErrorCode.MULTIPLE_COMPONENTS_MATCH,\n RuntimeErrorCode.EXPORT_NOT_FOUND,\n RuntimeErrorCode.PIPE_NOT_FOUND,\n]);\n/* tslint:enable:no-toplevel-property-access */\n\n/** Called to format a runtime error */\nexport function formatRuntimeError(code: RuntimeErrorCode, message: string): string {\n const fullCode = code ? `NG0${code}: ` : '';\n\n let errorMessage = `${fullCode}${message}`;\n\n // Some runtime errors are still thrown without `ngDevMode` (for example\n // `throwProviderNotFoundError`), so we add `ngDevMode` check here to avoid pulling\n // `RUNTIME_ERRORS_WITH_GUIDES` symbol into prod bundles.\n // TODO: revisit all instances where `RuntimeError` is thrown and see if `ngDevMode` can be added\n // there instead to tree-shake more devmode-only code (and eventually remove `ngDevMode` check\n // from this code).\n if (ngDevMode && RUNTIME_ERRORS_WITH_GUIDES.has(code)) {\n errorMessage = `${errorMessage}. Find more at ${ERROR_DETAILS_PAGE_BASE_URL}/NG0${code}`;\n }\n return errorMessage;\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code 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 * Check `core/test/render3/perf/render_stringify` for benchmarks and alternate implementations.\n */\nexport function renderStringify(value: any): string {\n if (typeof value === 'string') return value;\n if (value == null) return '';\n // Use `String` so that it invokes the `toString` method of the value. Note that this\n // appears to be faster than calling `value.toString` (see `render_stringify` benchmark).\n return String(value);\n}\n\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 */\nexport function stringifyForError(value: any): string {\n if (typeof value === 'function') return value.name || value.toString();\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 */\nimport {InjectorType} from '../di/interface/defs';\nimport {stringify} from '../util/stringify';\nimport {RuntimeError, RuntimeErrorCode} from './error_code';\nimport {stringifyForError} from './util/stringify_utils';\n\n\n/** Called when directives inject each other (creating a circular dependency) */\nexport function throwCyclicDependencyError(token: string, path?: string[]): never {\n const depPath = path ? `. Dependency path: ${path.join(' > ')} > ${token}` : '';\n throw new RuntimeError(\n RuntimeErrorCode.CYCLIC_DI_DEPENDENCY,\n `Circular dependency in DI detected for ${token}${depPath}`);\n}\n\nexport function throwMixedMultiProviderError() {\n throw new Error(`Cannot mix multi providers and regular providers`);\n}\n\nexport function throwInvalidProviderError(\n ngModuleType?: InjectorType, providers?: any[], provider?: any) {\n let ngModuleDetail = '';\n if (ngModuleType && providers) {\n const providerDetail = providers.map(v => v == provider ? '?' + provider + '?' : '...');\n ngModuleDetail =\n ` - only instances of Provider and Type are allowed, got: [${providerDetail.join(', ')}]`;\n }\n\n throw new Error(\n `Invalid provider for the NgModule '${stringify(ngModuleType)}'` + ngModuleDetail);\n}\n\n\n/** Throws an error when a token is not found in DI. */\nexport function throwProviderNotFoundError(token: any, injectorName?: string): never {\n const injectorDetails = injectorName ? ` in ${injectorName}` : '';\n throw new RuntimeError(\n RuntimeErrorCode.PROVIDER_NOT_FOUND,\n `No provider for ${stringifyForError(token)} found${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// The functions in this file verify that the assumptions we are making\n// about state in an instruction are correct before implementing any logic.\n// They are meant only to be called in dev mode as sanity checks.\n\nimport {stringify} from './stringify';\n\nexport function assertNumber(actual: any, msg: string): asserts actual is number {\n if (!(typeof actual === 'number')) {\n throwError(msg, typeof actual, 'number', '===');\n }\n}\n\nexport function assertNumberInRange(\n actual: any, minInclusive: number, maxInclusive: number): asserts actual is number {\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\nexport function assertString(actual: any, msg: string): asserts actual is string {\n if (!(typeof actual === 'string')) {\n throwError(msg, actual === null ? 'null' : typeof actual, 'string', '===');\n }\n}\n\nexport function assertFunction(actual: any, msg: string): asserts actual is Function {\n if (!(typeof actual === 'function')) {\n throwError(msg, actual === null ? 'null' : typeof actual, 'function', '===');\n }\n}\n\nexport function assertEqual(actual: T, expected: T, msg: string) {\n if (!(actual == expected)) {\n throwError(msg, actual, expected, '==');\n }\n}\n\nexport function assertNotEqual(actual: T, expected: T, msg: string): asserts actual is T {\n if (!(actual != expected)) {\n throwError(msg, actual, expected, '!=');\n }\n}\n\nexport function assertSame(actual: T, expected: T, msg: string): asserts actual is T {\n if (!(actual === expected)) {\n throwError(msg, actual, expected, '===');\n }\n}\n\nexport function assertNotSame(actual: T, expected: T, msg: string) {\n if (!(actual !== expected)) {\n throwError(msg, actual, expected, '!==');\n }\n}\n\nexport function assertLessThan(actual: T, expected: T, msg: string): asserts actual is T {\n if (!(actual < expected)) {\n throwError(msg, actual, expected, '<');\n }\n}\n\nexport function assertLessThanOrEqual(actual: T, expected: T, msg: string): asserts actual is T {\n if (!(actual <= expected)) {\n throwError(msg, actual, expected, '<=');\n }\n}\n\nexport function assertGreaterThan(actual: T, expected: T, msg: string): asserts actual is T {\n if (!(actual > expected)) {\n throwError(msg, actual, expected, '>');\n }\n}\n\nexport function assertGreaterThanOrEqual(\n actual: T, expected: T, msg: string): asserts actual is T {\n if (!(actual >= expected)) {\n throwError(msg, actual, expected, '>=');\n }\n}\n\nexport function assertNotDefined(actual: T, msg: string) {\n if (actual != null) {\n throwError(msg, actual, null, '==');\n }\n}\n\nexport function assertDefined(actual: T|null|undefined, msg: string): asserts actual is T {\n if (actual == null) {\n throwError(msg, actual, null, '!=');\n }\n}\n\nexport function throwError(msg: string): never;\nexport function throwError(msg: string, actual: any, expected: any, comparison: string): never;\nexport function throwError(msg: string, actual?: any, expected?: any, comparison?: string): never {\n throw new Error(\n `ASSERTION ERROR: ${msg}` +\n (comparison == null ? '' : ` [Expected=> ${expected} ${comparison} ${actual} <=Actual]`));\n}\n\nexport function assertDomNode(node: any): asserts node is Node {\n // If we're in a worker, `Node` will not be defined.\n if (!(typeof Node !== 'undefined' && node instanceof Node) &&\n !(typeof node === 'object' && node != null &&\n node.constructor.name === 'WebWorkerRenderNode')) {\n throwError(`The provided value must be an instance of a DOM Node but got ${stringify(node)}`);\n }\n}\n\n\nexport function assertIndexInRange(arr: any[], index: number) {\n assertDefined(arr, 'Array must be defined.');\n const maxLen = arr.length;\n if (index < 0 || index >= maxLen) {\n throwError(`Index expected to be less than ${maxLen} but got ${index}`);\n }\n}\n\n\nexport function assertOneOf(value: any, ...validValues: any[]) {\n if (validValues.indexOf(value) !== -1) return true;\n throwError(`Expected value to be one of ${JSON.stringify(validValues)} but was ${\n JSON.stringify(value)}.`);\n}","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {Type} from '../../interface/type';\nimport {getClosureSafeProperty} from '../../util/property';\nimport {ClassProvider, ConstructorProvider, ExistingProvider, FactoryProvider, StaticClassProvider, ValueProvider} from './provider';\n\n\n\n/**\n * Information about how a type or `InjectionToken` interfaces with the DI system.\n *\n * At a minimum, this includes a `factory` which defines how to create the given type `T`, possibly\n * requesting injection of other types if necessary.\n *\n * Optionally, a `providedIn` parameter specifies that the given type belongs to a particular\n * `InjectorDef`, `NgModule`, or a special scope (e.g. `'root'`). A value of `null` indicates\n * that the injectable does not belong to any scope.\n *\n * @codeGenApi\n * @publicApi The ViewEngine compiler emits code with this type for injectables. This code is\n * deployed to npm, and should be treated as public api.\n\n */\nexport interface ɵɵInjectableDef {\n /**\n * Specifies that the given type belongs to a particular injector:\n * - `InjectorType` such as `NgModule`,\n * - `'root'` the root injector\n * - `'any'` all injectors.\n * - `null`, does not belong to any injector. Must be explicitly listed in the injector\n * `providers`.\n */\n providedIn: InjectorType|'root'|'platform'|'any'|null;\n\n /**\n * The token to which this definition belongs.\n *\n * Note that this may not be the same as the type that the `factory` will create.\n */\n token: unknown;\n\n /**\n * Factory method to execute to create an instance of the injectable.\n */\n factory: (t?: Type) => T;\n\n /**\n * In a case of no explicit injector, a location where the instance of the injectable is stored.\n */\n value: T|undefined;\n}\n\n/**\n * Information about the providers to be included in an `Injector` as well as how the given type\n * which carries the information should be created by the DI system.\n *\n * An `InjectorDef` can import other types which have `InjectorDefs`, forming a deep nested\n * structure of providers with a defined priority (identically to how `NgModule`s also have\n * an import/dependency structure).\n *\n * NOTE: This is a private type and should not be exported\n *\n * @codeGenApi\n */\nexport interface ɵɵInjectorDef {\n factory: () => T;\n\n // TODO(alxhub): Narrow down the type here once decorators properly change the return type of the\n // class they are decorating (to add the ɵprov property for example).\n providers: (Type|ValueProvider|ExistingProvider|FactoryProvider|ConstructorProvider|\n StaticClassProvider|ClassProvider|any[])[];\n\n imports: (InjectorType|InjectorTypeWithProviders)[];\n}\n\n/**\n * A `Type` which has an `InjectableDef` static field.\n *\n * `InjectableDefType`s contain their own Dependency Injection metadata and are usable in an\n * `InjectorDef`-based `StaticInjector.\n *\n * @publicApi\n */\nexport interface InjectableType extends Type {\n /**\n * Opaque type whose structure is highly version dependent. Do not rely on any properties.\n */\n ɵprov: never;\n}\n\n/**\n * A type which has an `InjectorDef` static field.\n *\n * `InjectorDefTypes` can be used to configure a `StaticInjector`.\n *\n * @publicApi\n */\nexport interface InjectorType extends Type {\n /**\n * Opaque type whose structure is highly version dependent. Do not rely on any properties.\n */\n ɵinj: never;\n}\n\n/**\n * Describes the `InjectorDef` equivalent of a `ModuleWithProviders`, an `InjectorDefType` with an\n * associated array of providers.\n *\n * Objects of this type can be listed in the imports section of an `InjectorDef`.\n *\n * NOTE: This is a private type and should not be exported\n */\nexport interface InjectorTypeWithProviders {\n ngModule: InjectorType;\n providers?: (Type|ValueProvider|ExistingProvider|FactoryProvider|ConstructorProvider|\n StaticClassProvider|ClassProvider|any[])[];\n}\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 */\nexport function ɵɵdefineInjectable(opts: {\n token: unknown,\n providedIn?: Type|'root'|'platform'|'any'|null, factory: () => T,\n}): never {\n return ({\n token: opts.token,\n providedIn: opts.providedIn as any || null,\n factory: opts.factory,\n value: undefined,\n } as ɵɵInjectableDef) as never;\n}\n\n/**\n * @deprecated in v8, delete after v10. This API should be used only by generated code, and that\n * code should now use ɵɵdefineInjectable instead.\n * @publicApi\n */\nexport const defineInjectable = ɵɵdefineInjectable;\n\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 */\nexport function ɵɵdefineInjector(options: {factory: () => any, providers?: any[], imports?: any[]}):\n never {\n return ({\n factory: options.factory,\n providers: options.providers || [],\n imports: options.imports || [],\n } as ɵɵInjectorDef) as never;\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 */\nexport function getInjectableDef(type: any): ɵɵInjectableDef|null {\n return getOwnDefinition(type, NG_PROV_DEF) || getOwnDefinition(type, NG_INJECTABLE_DEF);\n}\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 */\nfunction getOwnDefinition(type: any, field: string): ɵɵInjectableDef|null {\n return type.hasOwnProperty(field) ? type[field] : null;\n}\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 */\nexport function getInheritedInjectableDef(type: any): ɵɵInjectableDef|null {\n const def = type && (type[NG_PROV_DEF] || type[NG_INJECTABLE_DEF]);\n\n if (def) {\n const typeName = getTypeName(type);\n // TODO(FW-1307): Re-add ngDevMode when closure can handle it\n // ngDevMode &&\n console.warn(\n `DEPRECATED: DI is instantiating a token \"${\n typeName}\" that inherits its @Injectable decorator but does not provide one itself.\\n` +\n `This will become an error in a future version of Angular. Please add @Injectable() to the \"${\n typeName}\" class.`);\n return def;\n } else {\n return null;\n }\n}\n\n/** Gets the name of a type, accounting for some cross-browser differences. */\nfunction getTypeName(type: any): string {\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 const match = ('' + type).match(/^function\\s*([^\\s(]+)/);\n return match === null ? '' : match[1];\n}\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 */\nexport function getInjectorDef(type: any): ɵɵInjectorDef|null {\n return type && (type.hasOwnProperty(NG_INJ_DEF) || type.hasOwnProperty(NG_INJECTOR_DEF)) ?\n (type as any)[NG_INJ_DEF] :\n null;\n}\n\nexport const NG_PROV_DEF = getClosureSafeProperty({ɵprov: getClosureSafeProperty});\nexport const NG_INJ_DEF = getClosureSafeProperty({ɵinj: getClosureSafeProperty});\n\n// We need to keep these around so we can read off old defs if new defs are unavailable\nexport const NG_INJECTABLE_DEF = getClosureSafeProperty({ngInjectableDef: getClosureSafeProperty});\nexport const NG_INJECTOR_DEF = getClosureSafeProperty({ngInjectorDef: getClosureSafeProperty});\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code 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 * Special flag indicating that a decorator is of type `Inject`. It's used to make `Inject`\n * decorator tree-shakable (so we don't have to rely on the `instanceof` checks).\n * Note: this flag is not included into the `InjectFlags` since it's an internal-only API.\n */\nexport const enum DecoratorFlags {\n Inject = -1\n}\n\n/**\n * Injection flags for DI.\n *\n * @publicApi\n */\nexport enum InjectFlags {\n // TODO(alxhub): make this 'const' (and remove `InternalInjectFlags` enum) when ngc no longer\n // writes exports of it into ngfactory files.\n\n /** Check self and check parent injector if needed */\n Default = 0b0000,\n\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 Host = 0b0001,\n\n /** Don't ascend to ancestors of the node requesting injection. */\n Self = 0b0010,\n\n /** Skip the node that is requesting injection. */\n SkipSelf = 0b0100,\n\n /** Inject `defaultValue` instead if token not found. */\n Optional = 0b1000,\n}\n\n/**\n * This enum is an exact copy of the `InjectFlags` enum above, but the difference is that this is a\n * const enum, so actual enum values would be inlined in generated code. The `InjectFlags` enum can\n * be turned into a const enum when ViewEngine is removed (see TODO at the `InjectFlags` enum\n * above). The benefit of inlining is that we can use these flags at the top level without affecting\n * tree-shaking (see \"no-toplevel-property-access\" tslint rule for more info).\n * Keep this enum in sync with `InjectFlags` enum above.\n */\nexport const enum InternalInjectFlags {\n /** Check self and check parent injector if needed */\n Default = 0b0000,\n\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 Host = 0b0001,\n\n /** Don't ascend to ancestors of the node requesting injection. */\n Self = 0b0010,\n\n /** Skip the node that is requesting injection. */\n SkipSelf = 0b0100,\n\n /** Inject `defaultValue` instead if token not found. */\n Optional = 0b1000,\n}","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {AbstractType, Type} from '../interface/type';\nimport {throwProviderNotFoundError} from '../render3/errors_di';\nimport {assertNotEqual} from '../util/assert';\nimport {stringify} from '../util/stringify';\nimport {InjectionToken} from './injection_token';\nimport {getInjectableDef, ɵɵInjectableDef} from './interface/defs';\nimport {InjectFlags} from './interface/injector';\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 */\nlet _injectImplementation:\n ((token: Type|AbstractType|InjectionToken, flags?: InjectFlags) => T | null)|\n undefined;\nexport function getInjectImplementation() {\n return _injectImplementation;\n}\n\n\n/**\n * Sets the current inject implementation.\n */\nexport function setInjectImplementation(\n impl: ((token: Type|AbstractType|InjectionToken, flags?: InjectFlags) => T | null)|\n undefined):\n ((token: Type|AbstractType|InjectionToken, flags?: InjectFlags) => T | null)|\n undefined {\n const previous = _injectImplementation;\n _injectImplementation = impl;\n return previous;\n}\n\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 */\nexport function injectRootLimpMode(\n token: Type|AbstractType|InjectionToken, notFoundValue: T|undefined,\n flags: InjectFlags): T|null {\n const injectableDef: ɵɵInjectableDef|null = getInjectableDef(token);\n if (injectableDef && injectableDef.providedIn == 'root') {\n return injectableDef.value === undefined ? injectableDef.value = injectableDef.factory() :\n injectableDef.value;\n }\n if (flags & InjectFlags.Optional) return null;\n if (notFoundValue !== undefined) return notFoundValue;\n throwProviderNotFoundError(stringify(token), 'Injector');\n}\n\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 */\nexport function assertInjectImplementationNotEqual(\n fn: ((token: Type|AbstractType|InjectionToken, flags?: InjectFlags) => T | null)) {\n ngDevMode &&\n 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/**\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 */\nexport function noSideEffects(fn: () => T): T {\n return {toString: fn}.toString() as unknown as T;\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code 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 * 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 */\nexport enum 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 OnPush = 0,\n\n /**\n * Use the default `CheckAlways` strategy, in which change detection is automatic until\n * explicitly deactivated.\n */\n Default = 1,\n}\n\n/**\n * Defines the possible states of the default change detector.\n * @see `ChangeDetectorRef`\n */\nexport enum 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 CheckOnce,\n\n /**\n * A state in which change detection is skipped until the change detector mode\n * becomes `CheckOnce`.\n */\n Checked,\n\n /**\n * A state in which change detection continues automatically until explicitly\n * deactivated.\n */\n CheckAlways,\n\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 Detached,\n\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 Errored,\n\n /**\n * Indicates that the change detector has been destroyed.\n */\n Destroyed,\n}\n\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 */\nexport function isDefaultChangeDetectionStrategy(changeDetectionStrategy: ChangeDetectionStrategy):\n boolean {\n return changeDetectionStrategy == null ||\n 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/**\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 */\nexport enum 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 Emulated = 0,\n\n // 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 None = 2,\n\n /**\n * Use Shadow DOM to encapsulate styles.\n *\n * For the DOM this means using modern [Shadow\n * DOM](https://developer.mozilla.org/en-US/docs/Web/Web_Components/Using_shadow_DOM) and\n * creating a ShadowRoot for Component's Host Element.\n */\n ShadowDom = 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// TODO(jteplitz602): Load WorkerGlobalScope from lib.webworker.d.ts file #3492\ndeclare var WorkerGlobalScope: any /** TODO #9100 */;\n// CommonJS / Node have global context exposed as \"global\" variable.\n// We don't want to include the whole node.d.ts this this compilation unit so we'll just fake\n// the global \"global\" var for now.\ndeclare var global: any /** TODO #9100 */;\n\nconst __globalThis = typeof globalThis !== 'undefined' && globalThis;\nconst __window = typeof window !== 'undefined' && window;\nconst __self = typeof self !== 'undefined' && typeof WorkerGlobalScope !== 'undefined' &&\n self instanceof WorkerGlobalScope && self;\nconst __global = typeof global !== 'undefined' && global;\n\n// 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.\nconst _global = __globalThis || __global || __window || __self;\n\n/**\n * Attention: whenever providing a new value, be sure to add an\n * entry into the corresponding `....externs.js` file,\n * so that closure won't use that global for its purposes.\n */\nexport {_global as 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\nimport {global} from './global';\n\ndeclare global {\n /**\n * Values of ngDevMode\n * Depending on the current state of the application, ngDevMode may have one of several values.\n *\n * For convenience, the “truthy” value which enables dev mode is also an object which contains\n * Angular’s performance counters. This is not necessary, but cuts down on boilerplate for the\n * perf counters.\n *\n * ngDevMode may also be set to false. This can happen in one of a few ways:\n * - The user explicitly sets `window.ngDevMode = false` somewhere in their app.\n * - The user calls `enableProdMode()`.\n * - The URL contains a `ngDevMode=false` text.\n * Finally, ngDevMode may not have been defined at all.\n */\n const ngDevMode: null|NgDevModePerfCounters;\n interface NgDevModePerfCounters {\n namedConstructors: boolean;\n firstCreatePass: number;\n tNode: number;\n tView: number;\n rendererCreateTextNode: number;\n rendererSetText: number;\n rendererCreateElement: number;\n rendererAddEventListener: number;\n rendererSetAttribute: number;\n rendererRemoveAttribute: number;\n rendererSetProperty: number;\n rendererSetClassName: number;\n rendererAddClass: number;\n rendererRemoveClass: number;\n rendererSetStyle: number;\n rendererRemoveStyle: number;\n rendererDestroy: number;\n rendererDestroyNode: number;\n rendererMoveNode: number;\n rendererRemoveNode: number;\n rendererAppendChild: number;\n rendererInsertBefore: number;\n rendererCreateComment: number;\n }\n}\n\nexport function ngDevModeResetPerfCounters(): NgDevModePerfCounters {\n const locationString = typeof location !== 'undefined' ? location.toString() : '';\n const newCounters: NgDevModePerfCounters = {\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 };\n\n // Make sure to refer to ngDevMode as ['ngDevMode'] for closure.\n const allowNgDevModeTrue = locationString.indexOf('ngDevMode=false') === -1;\n global['ngDevMode'] = allowNgDevModeTrue && newCounters;\n return newCounters;\n}\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 */\nexport function initNgDevMode(): boolean {\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 !== 'object') {\n ngDevModeResetPerfCounters();\n }\n return typeof ngDevMode !== 'undefined' && !!ngDevMode;\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 */\nimport {initNgDevMode} from '../util/ng_dev_mode';\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\nexport const EMPTY_OBJ: {} = {};\nexport const EMPTY_ARRAY: any[] = [];\n\n// freezing the values prevents any code from accidentally inserting new values in\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);\n // tslint:disable-next-line:no-toplevel-property-access\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\nimport {getClosureSafeProperty} from '../util/property';\n\nexport const NG_COMP_DEF = getClosureSafeProperty({ɵcmp: getClosureSafeProperty});\nexport const NG_DIR_DEF = getClosureSafeProperty({ɵdir: getClosureSafeProperty});\nexport const NG_PIPE_DEF = getClosureSafeProperty({ɵpipe: getClosureSafeProperty});\nexport const NG_MOD_DEF = getClosureSafeProperty({ɵmod: getClosureSafeProperty});\nexport const NG_LOC_ID_DEF = getClosureSafeProperty({ɵloc: getClosureSafeProperty});\nexport const NG_FACTORY_DEF = getClosureSafeProperty({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.\nexport const NG_ELEMENT_ID = getClosureSafeProperty({__NG_ELEMENT_ID__: getClosureSafeProperty});\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {ChangeDetectionStrategy} from '../change_detection/constants';\nimport {Mutable, Type} from '../interface/type';\nimport {NgModuleDef, NgModuleType} from '../metadata/ng_module_def';\nimport {SchemaMetadata} from '../metadata/schema';\nimport {ViewEncapsulation} from '../metadata/view';\nimport {noSideEffects} from '../util/closure';\nimport {initNgDevMode} from '../util/ng_dev_mode';\nimport {stringify} from '../util/stringify';\nimport {EMPTY_ARRAY, EMPTY_OBJ} from './empty';\nimport {NG_COMP_DEF, NG_DIR_DEF, NG_LOC_ID_DEF, NG_MOD_DEF, NG_PIPE_DEF} from './fields';\nimport {ComponentDef, ComponentDefFeature, ComponentTemplate, ComponentType, ContentQueriesFunction, DirectiveDef, DirectiveDefFeature, DirectiveTypesOrFactory, HostBindingsFunction, PipeDef, PipeTypesOrFactory, ViewQueriesFunction} from './interfaces/definition';\nimport {AttributeMarker, TAttributes, TConstantsOrFactory} from './interfaces/node';\nimport {CssSelectorList, SelectorFlags} from './interfaces/projection';\n\n\nlet _renderCompCount = 0;\n\n// While these types are unused here, they are required so that types don't\n// get resolved lazily. see: https://github.com/Microsoft/web-build-tools/issues/1050\ntype _web_build_tools_issue_1050_SelectorFlags = SelectorFlags;\ntype _web_build_tools_issue_1050_AttributeMarker = AttributeMarker;\n\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 */\nexport function ɵɵdefineComponent(componentDefinition: {\n /**\n * Directive type, needed to configure the injector.\n */\n type: Type;\n\n /** The selectors that will be used to match nodes to this component. */\n selectors?: CssSelectorList;\n\n /**\n * The number of nodes, local refs, and pipes in this component template.\n *\n * Used to calculate the length of this component's LView array, so we\n * can pre-fill the array and set the binding start index.\n */\n // TODO(kara): remove queries from this count\n decls: number;\n\n /**\n * The number of bindings in this component template (including pure fn bindings).\n *\n * Used to calculate the length of this component's LView array, so we\n * can pre-fill the array and set the host binding start index.\n */\n vars: number;\n\n /**\n * A map of input names.\n *\n * The format is in: `{[actualPropertyName: string]:(string|[string, string])}`.\n *\n * Given:\n * ```\n * class MyComponent {\n * @Input()\n * publicInput1: string;\n *\n * @Input('publicInput2')\n * declaredInput2: string;\n * }\n * ```\n *\n * is described as:\n * ```\n * {\n * publicInput1: 'publicInput1',\n * declaredInput2: ['publicInput2', 'declaredInput2'],\n * }\n * ```\n *\n * Which the minifier may translate to:\n * ```\n * {\n * minifiedPublicInput1: 'publicInput1',\n * minifiedDeclaredInput2: ['publicInput2', 'declaredInput2'],\n * }\n * ```\n *\n * This allows the render to re-construct the minified, public, and declared names\n * of properties.\n *\n * NOTE:\n * - Because declared and public name are usually same we only generate the array\n * `['public', 'declared']` format when they differ.\n * - The reason why this API and `outputs` API is not the same is that `NgOnChanges` has\n * inconsistent behavior in that it uses declared names rather than minified or public. For\n * this reason `NgOnChanges` will be deprecated and removed in future version and this\n * API will be simplified to be consistent with `output`.\n */\n inputs?: {[P in keyof T]?: string | [string, string]};\n\n /**\n * A map of output names.\n *\n * The format is in: `{[actualPropertyName: string]:string}`.\n *\n * Which the minifier may translate to: `{[minifiedPropertyName: string]:string}`.\n *\n * This allows the render to re-construct the minified and non-minified names\n * of properties.\n */\n outputs?: {[P in keyof T]?: string};\n\n /**\n * Function executed by the parent template to allow child directive to apply host bindings.\n */\n hostBindings?: HostBindingsFunction;\n\n /**\n * The number of bindings in this directive `hostBindings` (including pure fn bindings).\n *\n * Used to calculate the length of the component's LView array, so we\n * can pre-fill the array and set the host binding start index.\n */\n hostVars?: number;\n\n /**\n * Assign static attribute values to a host element.\n *\n * This property will assign static attribute values as well as class and style\n * values to a host element. Since attribute values can consist of different types of values, the\n * `hostAttrs` array must include the values in the following format:\n *\n * attrs = [\n * // static attributes (like `title`, `name`, `id`...)\n * attr1, value1, attr2, value,\n *\n * // a single namespace value (like `x:id`)\n * NAMESPACE_MARKER, namespaceUri1, name1, value1,\n *\n * // another single namespace value (like `x:name`)\n * NAMESPACE_MARKER, namespaceUri2, name2, value2,\n *\n * // a series of CSS classes that will be applied to the element (no spaces)\n * CLASSES_MARKER, class1, class2, class3,\n *\n * // a series of CSS styles (property + value) that will be applied to the element\n * STYLES_MARKER, prop1, value1, prop2, value2\n * ]\n *\n * All non-class and non-style attributes must be defined at the start of the list\n * first before all class and style values are set. When there is a change in value\n * type (like when classes and styles are introduced) a marker must be used to separate\n * the entries. The marker values themselves are set via entries found in the\n * [AttributeMarker] enum.\n */\n hostAttrs?: TAttributes;\n\n /**\n * Function to create instances of content queries associated with a given directive.\n */\n contentQueries?: ContentQueriesFunction;\n\n /**\n * Defines the name that can be used in the template to assign this directive to a variable.\n *\n * See: {@link Directive.exportAs}\n */\n exportAs?: string[];\n\n /**\n * Template function use for rendering DOM.\n *\n * This function has following structure.\n *\n * ```\n * function Template(ctx:T, creationMode: boolean) {\n * if (creationMode) {\n * // Contains creation mode instructions.\n * }\n * // Contains binding update instructions\n * }\n * ```\n *\n * Common instructions are:\n * Creation mode instructions:\n * - `elementStart`, `elementEnd`\n * - `text`\n * - `container`\n * - `listener`\n *\n * Binding update instructions:\n * - `bind`\n * - `elementAttribute`\n * - `elementProperty`\n * - `elementClass`\n * - `elementStyle`\n *\n */\n template: ComponentTemplate;\n\n /**\n * Constants for the nodes in the component's view.\n * Includes attribute arrays, local definition arrays etc.\n */\n consts?: TConstantsOrFactory;\n\n /**\n * An array of `ngContent[selector]` values that were found in the template.\n */\n ngContentSelectors?: string[];\n\n /**\n * Additional set of instructions specific to view query processing. This could be seen as a\n * set of instruction to be inserted into the template function.\n *\n * Query-related instructions need to be pulled out to a specific function as a timing of\n * execution is different as compared to all other instructions (after change detection hooks but\n * before view hooks).\n */\n viewQuery?: ViewQueriesFunction| null;\n\n /**\n * A list of optional features to apply.\n *\n * See: {@link NgOnChangesFeature}, {@link ProvidersFeature}\n */\n features?: ComponentDefFeature[];\n\n /**\n * Defines template and style encapsulation options available for Component's {@link Component}.\n */\n encapsulation?: ViewEncapsulation;\n\n /**\n * Defines arbitrary developer-defined data to be stored on a renderer instance.\n * This is useful for renderers that delegate to other renderers.\n *\n * see: animation\n */\n data?: {[kind: string]: any};\n\n /**\n * A set of styles that the component needs to be present for component to render correctly.\n */\n styles?: string[];\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 changeDetection?: ChangeDetectionStrategy;\n\n /**\n * Registry of directives and components that may be found in this component's view.\n *\n * The property is either an array of `DirectiveDef`s or a function which returns the array of\n * `DirectiveDef`s. The function is necessary to be able to support forward declarations.\n */\n directives?: DirectiveTypesOrFactory | null;\n\n /**\n * Registry of pipes that may be found in this component's view.\n *\n * The property is either an array of `PipeDefs`s or a function which returns the array of\n * `PipeDefs`s. The function is necessary to be able to support forward declarations.\n */\n pipes?: PipeTypesOrFactory | null;\n\n /**\n * The set of schemas that declare elements to be allowed in the component's template.\n */\n schemas?: SchemaMetadata[] | null;\n}): never {\n return noSideEffects(() => {\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\n const type = componentDefinition.type;\n const typePrototype = type.prototype;\n const declaredInputs: {[key: string]: string} = {} as any;\n const def: Mutable, keyof ComponentDef> = {\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!, // assigned in noSideEffects\n outputs: null!, // assigned in noSideEffects\n exportAs: componentDefinition.exportAs || null,\n onPush: componentDefinition.changeDetection === ChangeDetectionStrategy.OnPush,\n directiveDefs: null!, // assigned in noSideEffects\n pipeDefs: null!, // assigned in noSideEffects\n selectors: componentDefinition.selectors || EMPTY_ARRAY,\n viewQuery: componentDefinition.viewQuery || null,\n features: componentDefinition.features as DirectiveDefFeature[] || 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.Emulated,\n id: 'c',\n styles: componentDefinition.styles || EMPTY_ARRAY,\n _: null as never,\n setInput: null,\n schemas: componentDefinition.schemas || null,\n tView: null,\n };\n const directiveTypes = componentDefinition.directives!;\n const feature = componentDefinition.features;\n const pipeTypes = componentDefinition.pipes!;\n def.id += _renderCompCount++;\n def.inputs = invertObject(componentDefinition.inputs, declaredInputs),\n def.outputs = invertObject(componentDefinition.outputs),\n feature && feature.forEach((fn) => fn(def));\n def.directiveDefs = directiveTypes ?\n () => (typeof directiveTypes === 'function' ? directiveTypes() : directiveTypes)\n .map(extractDirectiveDef) :\n null;\n def.pipeDefs = pipeTypes ?\n () =>\n (typeof pipeTypes === 'function' ? pipeTypes() : pipeTypes).map(extractPipeDef) :\n null;\n\n return def as never;\n }) as never;\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 */\nexport function ɵɵsetComponentScope(\n type: ComponentType, directives: Type[], pipes: Type[]): void {\n const def = (type.ɵcmp as ComponentDef);\n def.directiveDefs = () => directives.map(extractDirectiveDef);\n def.pipeDefs = () => pipes.map(extractPipeDef);\n}\n\nexport function extractDirectiveDef(type: Type): DirectiveDef|ComponentDef {\n const def = getComponentDef(type) || getDirectiveDef(type);\n if (ngDevMode && !def) {\n throw new Error(`'${type.name}' is neither 'ComponentType' or 'DirectiveType'.`);\n }\n return def!;\n}\n\nexport function extractPipeDef(type: Type): PipeDef {\n const def = getPipeDef(type);\n if (ngDevMode && !def) {\n throw new Error(`'${type.name}' is not a 'PipeType'.`);\n }\n return def!;\n}\n\nexport const autoRegisterModuleById: {[id: string]: NgModuleType} = {};\n\n/**\n * @codeGenApi\n */\nexport function ɵɵdefineNgModule(def: {\n /** Token representing the module. Used by DI. */\n type: T;\n\n /** List of components to bootstrap. */\n bootstrap?: Type[] | (() => Type[]);\n\n /** List of components, directives, and pipes declared by this module. */\n declarations?: Type[] | (() => Type[]);\n\n /** List of modules or `ModuleWithProviders` imported by this module. */\n imports?: Type[] | (() => Type[]);\n\n /**\n * List of modules, `ModuleWithProviders`, components, directives, or pipes exported by this\n * module.\n */\n exports?: Type[] | (() => Type[]);\n\n /** The set of schemas that declare elements to be allowed in the NgModule. */\n schemas?: SchemaMetadata[] | null;\n\n /** Unique ID for the module that is used with `getModuleFactory`. */\n id?: string | null;\n}): never {\n const res: NgModuleDef = {\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 if (def.id != null) {\n noSideEffects(() => {\n autoRegisterModuleById[def.id!] = def.type as unknown as NgModuleType;\n });\n }\n return res as never;\n}\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 */\nexport function ɵɵsetNgModuleScope(type: any, scope: {\n /** List of components, directives, and pipes declared by this module. */\n declarations?: Type[]|(() => Type[]);\n\n /** List of modules or `ModuleWithProviders` imported by this module. */\n imports?: Type[] | (() => Type[]);\n\n /**\n * List of modules, `ModuleWithProviders`, components, directives, or pipes exported by this\n * module.\n */\n exports?: Type[] | (() => Type[]);\n}): void {\n return noSideEffects(() => {\n const 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 }) as never;\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 */\nfunction invertObject(\n obj?: {[P in keyof T]?: string|[string, string]},\n secondary?: {[key: string]: string}): {[P in keyof T]: string} {\n if (obj == null) return EMPTY_OBJ as any;\n const newLookup: any = {};\n for (const minifiedKey in obj) {\n if (obj.hasOwnProperty(minifiedKey)) {\n let publicName: string|[string, string] = obj[minifiedKey]!;\n let declaredName = publicName;\n if (Array.isArray(publicName)) {\n declaredName = publicName[1];\n publicName = publicName[0];\n }\n newLookup[publicName] = minifiedKey;\n if (secondary) {\n (secondary[publicName] = declaredName as string);\n }\n }\n }\n return newLookup;\n}\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 */\nexport const ɵɵdefineDirective =\n ɵɵdefineComponent as any as(directiveDefinition: {\n /**\n * Directive type, needed to configure the injector.\n */\n type: Type;\n\n /** The selectors that will be used to match nodes to this directive. */\n selectors?: CssSelectorList;\n\n /**\n * A map of input names.\n *\n * The format is in: `{[actualPropertyName: string]:(string|[string, string])}`.\n *\n * Given:\n * ```\n * class MyComponent {\n * @Input()\n * publicInput1: string;\n *\n * @Input('publicInput2')\n * declaredInput2: string;\n * }\n * ```\n *\n * is described as:\n * ```\n * {\n * publicInput1: 'publicInput1',\n * declaredInput2: ['declaredInput2', 'publicInput2'],\n * }\n * ```\n *\n * Which the minifier may translate to:\n * ```\n * {\n * minifiedPublicInput1: 'publicInput1',\n * minifiedDeclaredInput2: [ 'publicInput2', 'declaredInput2'],\n * }\n * ```\n *\n * This allows the render to re-construct the minified, public, and declared names\n * of properties.\n *\n * NOTE:\n * - Because declared and public name are usually same we only generate the array\n * `['declared', 'public']` format when they differ.\n * - The reason why this API and `outputs` API is not the same is that `NgOnChanges` has\n * inconsistent behavior in that it uses declared names rather than minified or public. For\n * this reason `NgOnChanges` will be deprecated and removed in future version and this\n * API will be simplified to be consistent with `output`.\n */\n inputs?: {[P in keyof T]?: string | [string, string]};\n\n /**\n * A map of output names.\n *\n * The format is in: `{[actualPropertyName: string]:string}`.\n *\n * Which the minifier may translate to: `{[minifiedPropertyName: string]:string}`.\n *\n * This allows the render to re-construct the minified and non-minified names\n * of properties.\n */\n outputs?: {[P in keyof T]?: string};\n\n /**\n * A list of optional features to apply.\n *\n * See: {@link NgOnChangesFeature}, {@link ProvidersFeature}, {@link InheritDefinitionFeature}\n */\n features?: DirectiveDefFeature[];\n\n /**\n * Function executed by the parent template to allow child directive to apply host bindings.\n */\n hostBindings?: HostBindingsFunction;\n\n /**\n * The number of bindings in this directive `hostBindings` (including pure fn bindings).\n *\n * Used to calculate the length of the component's LView array, so we\n * can pre-fill the array and set the host binding start index.\n */\n hostVars?: number;\n\n /**\n * Assign static attribute values to a host element.\n *\n * This property will assign static attribute values as well as class and style\n * values to a host element. Since attribute values can consist of different types of values,\n * the `hostAttrs` array must include the values in the following format:\n *\n * attrs = [\n * // static attributes (like `title`, `name`, `id`...)\n * attr1, value1, attr2, value,\n *\n * // a single namespace value (like `x:id`)\n * NAMESPACE_MARKER, namespaceUri1, name1, value1,\n *\n * // another single namespace value (like `x:name`)\n * NAMESPACE_MARKER, namespaceUri2, name2, value2,\n *\n * // a series of CSS classes that will be applied to the element (no spaces)\n * CLASSES_MARKER, class1, class2, class3,\n *\n * // a series of CSS styles (property + value) that will be applied to the element\n * STYLES_MARKER, prop1, value1, prop2, value2\n * ]\n *\n * All non-class and non-style attributes must be defined at the start of the list\n * first before all class and style values are set. When there is a change in value\n * type (like when classes and styles are introduced) a marker must be used to separate\n * the entries. The marker values themselves are set via entries found in the\n * [AttributeMarker] enum.\n */\n hostAttrs?: TAttributes;\n\n /**\n * Function to create instances of content queries associated with a given directive.\n */\n contentQueries?: ContentQueriesFunction;\n\n /**\n * Additional set of instructions specific to view query processing. This could be seen as a\n * set of instructions to be inserted into the template function.\n */\n viewQuery?: ViewQueriesFunction| null;\n\n /**\n * Defines the name that can be used in the template to assign this directive to a variable.\n *\n * See: {@link Directive.exportAs}\n */\n exportAs?: string[];\n }) => never;\n\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 */\nexport function ɵɵdefinePipe(pipeDef: {\n /** Name of the pipe. Used for matching pipes in template to pipe defs. */\n name: string,\n\n /** Pipe class reference. Needed to extract pipe lifecycle hooks. */\n type: Type,\n\n /** Whether the pipe is pure. */\n pure?: boolean\n}): never {\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 }) as never;\n}\n\n/**\n * The following getter methods retrieve the definition from 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\nexport function getComponentDef(type: any): ComponentDef|null {\n return type[NG_COMP_DEF] || null;\n}\n\nexport function getDirectiveDef(type: any): DirectiveDef|null {\n return type[NG_DIR_DEF] || null;\n}\n\nexport function getPipeDef(type: any): PipeDef|null {\n return type[NG_PIPE_DEF] || null;\n}\n\nexport function getNgModuleDef(type: any, throwNotFound: true): NgModuleDef;\nexport function getNgModuleDef(type: any): NgModuleDef|null;\nexport function getNgModuleDef(type: any, throwNotFound?: boolean): NgModuleDef|null {\n const ngModuleDef = type[NG_MOD_DEF] || null;\n if (!ngModuleDef && throwNotFound === true) {\n throw new Error(`Type ${stringify(type)} does not have 'ɵmod' property.`);\n }\n return ngModuleDef;\n}\n\nexport function getNgLocaleIdDef(type: any): string|null {\n return (type as any)[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\nimport {TNode} from './node';\nimport {RComment, RElement} from './renderer_dom';\nimport {HOST, LView, NEXT, PARENT, T_HOST, TRANSPLANTED_VIEWS_TO_REFRESH} from './view';\n\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 */\nexport const TYPE = 1;\n\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 */\nexport const HAS_TRANSPLANTED_VIEWS = 2;\n\n// 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\n// T_HOST is index 6\n// We already have this constants in LView, we don't need to re-create it.\n\nexport const NATIVE = 7;\nexport const VIEW_REFS = 8;\nexport const MOVED_VIEWS = 9;\n\n\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 */\nexport const CONTAINER_HEADER_OFFSET = 10;\n\n/**\n * The state associated with a container.\n *\n * This is an array so that its structure is closer to LView. This helps\n * when traversing the view tree (which is a mix of containers and component\n * views), so we can jump to viewOrContainer[NEXT] in the same way regardless\n * of type.\n */\nexport interface LContainer extends Array {\n /**\n * The host element of this LContainer.\n *\n * The host could be an LView if this container is on a component node.\n * In that case, the component LView is its HOST.\n */\n readonly[HOST]: RElement|RComment|LView;\n\n /**\n * This is a type field which allows us to differentiate `LContainer` from `StylingContext` in an\n * efficient way. The value is always set to `true`\n */\n [TYPE]: true;\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`.\n */\n [HAS_TRANSPLANTED_VIEWS]: boolean;\n\n /**\n * Access to the parent view is necessary so we can propagate back\n * up from inside a container to parent[NEXT].\n */\n [PARENT]: LView;\n\n /**\n * This allows us to jump from a container to a sibling container or component\n * view with the same parent, so we can remove listeners efficiently.\n */\n [NEXT]: LView|LContainer|null;\n\n /**\n * The number of direct transplanted views which need a refresh or have descendants themselves\n * that need a refresh but have not marked their ancestors as Dirty. This tells us that during\n * change detection we should still descend to find those children to refresh, even if the parents\n * are not `Dirty`/`CheckAlways`.\n */\n [TRANSPLANTED_VIEWS_TO_REFRESH]: number;\n\n /**\n * A collection of views created based on the underlying `` element but inserted into\n * a different `LContainer`. We need to track views created from a given declaration point since\n * queries collect matches from the embedded view declaration point and _not_ the insertion point.\n */\n [MOVED_VIEWS]: LView[]|null;\n\n /**\n * Pointer to the `TNode` which represents the host of the container.\n */\n [T_HOST]: TNode;\n\n /** The comment element that serves as an anchor for this LContainer. */\n readonly[NATIVE]:\n RComment; // TODO(misko): remove as this value can be gotten by unwrapping `[HOST]`\n\n /**\n * Array of `ViewRef`s used by any `ViewContainerRef`s that point to this container.\n *\n * This is lazily initialized by `ViewContainerRef` when the first view is inserted.\n *\n * NOTE: This is stored as `any[]` because render3 should really not be aware of `ViewRef` and\n * doing so creates circular dependency.\n */\n [VIEW_REFS]: unknown[]|null;\n}\n\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\nexport const 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\nimport {InjectionToken} from '../../di/injection_token';\nimport {Injector} from '../../di/injector';\nimport {Type} from '../../interface/type';\nimport {SchemaMetadata} from '../../metadata/schema';\nimport {Sanitizer} from '../../sanitization/sanitizer';\nimport {LContainer} from './container';\nimport {ComponentDef, ComponentTemplate, DirectiveDef, DirectiveDefList, HostBindingsFunction, PipeDef, PipeDefList, ViewQueriesFunction} from './definition';\nimport {I18nUpdateOpCodes, TI18n, TIcu} from './i18n';\nimport {TConstants, TNode} from './node';\nimport {PlayerHandler} from './player';\nimport {LQueries, TQueries} from './query';\nimport {Renderer3, RendererFactory3} from './renderer';\nimport {RComment, RElement} from './renderer_dom';\nimport {TStylingKey, TStylingRange} from './styling';\n\n\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.\nexport const HOST = 0;\nexport const TVIEW = 1;\nexport const FLAGS = 2;\nexport const PARENT = 3;\nexport const NEXT = 4;\nexport const TRANSPLANTED_VIEWS_TO_REFRESH = 5;\nexport const T_HOST = 6;\nexport const CLEANUP = 7;\nexport const CONTEXT = 8;\nexport const INJECTOR = 9;\nexport const RENDERER_FACTORY = 10;\nexport const RENDERER = 11;\nexport const SANITIZER = 12;\nexport const CHILD_HEAD = 13;\nexport const CHILD_TAIL = 14;\n// FIXME(misko): Investigate if the three declarations aren't all same thing.\nexport const DECLARATION_VIEW = 15;\nexport const DECLARATION_COMPONENT_VIEW = 16;\nexport const DECLARATION_LCONTAINER = 17;\nexport const PREORDER_HOOK_FLAGS = 18;\nexport const 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 */\nexport const HEADER_OFFSET = 20;\n\n\n// This interface replaces the real LView interface if it is an arg or a\n// return value of a public instruction. This ensures we don't need to expose\n// the actual interface, which should be kept private.\nexport interface OpaqueViewState {\n '__brand__': 'Brand for OpaqueViewState that nothing will match';\n}\n\n\n/**\n * `LView` stores all of the information needed to process the instructions as\n * they are invoked from the template. Each embedded view and component view has its\n * own `LView`. When processing a particular view, we set the `viewData` to that\n * `LView`. When that view is done processing, the `viewData` is set back to\n * whatever the original `viewData` was before (the parent `LView`).\n *\n * Keeping separate state for each view facilities view insertion / deletion, so we\n * don't have to edit the data array based on which views are present.\n */\nexport interface LView extends Array {\n /**\n * Human readable representation of the `LView`.\n *\n * NOTE: This property only exists if `ngDevMode` is set to `true` and it is not present in\n * production. Its presence is purely to help debug issue in development, and should not be relied\n * on in production application.\n */\n debug?: LViewDebug;\n\n /**\n * The node into which this `LView` is inserted.\n */\n [HOST]: RElement|null;\n\n /**\n * The static data for this view. We need a reference to this so we can easily walk up the\n * node tree in DI and get the TView.data array associated with a node (where the\n * directive defs are stored).\n */\n readonly[TVIEW]: TView;\n\n /** Flags for this view. See LViewFlags for more info. */\n [FLAGS]: LViewFlags;\n\n /**\n * This may store an {@link LView} or {@link LContainer}.\n *\n * `LView` - The parent view. This is needed when we exit the view and must restore the previous\n * LView. Without this, the render method would have to keep a stack of\n * views as it is recursively rendering templates.\n *\n * `LContainer` - The current view is part of a container, and is an embedded view.\n */\n [PARENT]: LView|LContainer|null;\n\n /**\n *\n * The next sibling LView or LContainer.\n *\n * Allows us to propagate between sibling view states that aren't in the same\n * container. Embedded views already have a node.next, but it is only set for\n * views in the same container. We need a way to link component views and views\n * across containers as well.\n */\n [NEXT]: LView|LContainer|null;\n\n /** Queries active for this view - nodes from a view are reported to those queries. */\n [QUERIES]: LQueries|null;\n\n /**\n * Store the `TNode` of the location where the current `LView` is inserted into.\n *\n * Given:\n * ```\n *
\n * \n *
\n * ```\n *\n * We end up with two `TView`s.\n * - `parent` `TView` which contains `
`\n * - `child` `TView` which contains ``\n *\n * Typically the `child` is inserted into the declaration location of the `parent`, but it can be\n * inserted anywhere. Because it can be inserted anywhere it is not possible to store the\n * insertion information in the `TView` and instead we must store it in the `LView[T_HOST]`.\n *\n * So to determine where is our insertion parent we would execute:\n * ```\n * const parentLView = lView[PARENT];\n * const parentTNode = lView[T_HOST];\n * const insertionParent = parentLView[parentTNode.index];\n * ```\n *\n *\n * If `null`, this is the root view of an application (root component is in this view) and it has\n * no parents.\n */\n [T_HOST]: TNode|null;\n\n /**\n * When a view is destroyed, listeners need to be released and outputs need to be\n * unsubscribed. This context array stores both listener functions wrapped with\n * their context and output subscription instances for a particular view.\n *\n * These change per LView instance, so they cannot be stored on TView. Instead,\n * TView.cleanup saves an index to the necessary context in this array.\n *\n * After `LView` is created it is possible to attach additional instance specific functions at the\n * end of the `lView[CLENUP]` because we know that no more `T` level cleanup functions will be\n * addeded here.\n */\n [CLEANUP]: any[]|null;\n\n /**\n * - For dynamic views, this is the context with which to render the template (e.g.\n * `NgForContext`), or `{}` if not defined explicitly.\n * - For root view of the root component the context contains change detection data.\n * - For non-root components, the context is the component instance,\n * - For inline views, the context is null.\n */\n [CONTEXT]: {}|RootContext|null;\n\n /** An optional Module Injector to be used as fall back after Element Injectors are consulted. */\n readonly[INJECTOR]: Injector|null;\n\n /** Factory to be used for creating Renderer. */\n [RENDERER_FACTORY]: RendererFactory3;\n\n /** Renderer to be used for this view. */\n [RENDERER]: Renderer3;\n\n /** An optional custom sanitizer. */\n [SANITIZER]: Sanitizer|null;\n\n /**\n * Reference to the first LView or LContainer beneath this LView in\n * the hierarchy.\n *\n * Necessary to store this so views can traverse through their nested views\n * to remove listeners and call onDestroy callbacks.\n */\n [CHILD_HEAD]: LView|LContainer|null;\n\n /**\n * The last LView or LContainer beneath this LView in the hierarchy.\n *\n * The tail allows us to quickly add a new state to the end of the view list\n * without having to propagate starting from the first child.\n */\n [CHILD_TAIL]: LView|LContainer|null;\n\n /**\n * View where this view's template was declared.\n *\n * The template for a dynamically created view may be declared in a different view than\n * it is inserted. We already track the \"insertion view\" (view where the template was\n * inserted) in LView[PARENT], but we also need access to the \"declaration view\"\n * (view where the template was declared). Otherwise, we wouldn't be able to call the\n * view's template function with the proper contexts. Context should be inherited from\n * the declaration view tree, not the insertion view tree.\n *\n * Example (AppComponent template):\n *\n * <-- declared here -->\n * <-- inserted inside this component -->\n *\n * The above is declared in the AppComponent template, but it will be passed into\n * SomeComp and inserted there. In this case, the declaration view would be the AppComponent,\n * but the insertion view would be SomeComp. When we are removing views, we would want to\n * traverse through the insertion view to clean up listeners. When we are calling the\n * template function during change detection, we need the declaration view to get inherited\n * context.\n */\n [DECLARATION_VIEW]: LView|null;\n\n\n /**\n * Points to the declaration component view, used to track transplanted `LView`s.\n *\n * See: `DECLARATION_VIEW` which points to the actual `LView` where it was declared, whereas\n * `DECLARATION_COMPONENT_VIEW` points to the component which may not be same as\n * `DECLARATION_VIEW`.\n *\n * Example:\n * ```\n * <#VIEW #myComp>\n *
\n * ...\n *
\n * \n * ```\n * In the above case `DECLARATION_VIEW` for `myTmpl` points to the `LView` of `ngIf` whereas\n * `DECLARATION_COMPONENT_VIEW` points to `LView` of the `myComp` which owns the template.\n *\n * The reason for this is that all embedded views are always check-always whereas the component\n * view can be check-always or on-push. When we have a transplanted view it is important to\n * determine if we have transplanted a view from check-always declaration to on-push insertion\n * point. In such a case the transplanted view needs to be added to the `LContainer` in the\n * declared `LView` and CD during the declared view CD (in addition to the CD at the insertion\n * point.) (Any transplanted views which are intra Component are of no interest because the CD\n * strategy of declaration and insertion will always be the same, because it is the same\n * component.)\n *\n * Queries already track moved views in `LView[DECLARATION_LCONTAINER]` and\n * `LContainer[MOVED_VIEWS]`. However the queries also track `LView`s which moved within the same\n * component `LView`. Transplanted views are a subset of moved views, and we use\n * `DECLARATION_COMPONENT_VIEW` to differentiate them. As in this example.\n *\n * Example showing intra component `LView` movement.\n * ```\n * <#VIEW #myComp>\n *
\n * Content to render when condition is true.\n * Content to render when condition is false.\n * \n * ```\n * The `thenBlock` and `elseBlock` is moved but not transplanted.\n *\n * Example showing inter component `LView` movement (transplanted view).\n * ```\n * <#VIEW #myComp>\n * ...\n * \n * \n * ```\n * In the above example `myTmpl` is passed into a different component. If `insertion-component`\n * instantiates `myTmpl` and `insertion-component` is on-push then the `LContainer` needs to be\n * marked as containing transplanted views and those views need to be CD as part of the\n * declaration CD.\n *\n *\n * When change detection runs, it iterates over `[MOVED_VIEWS]` and CDs any child `LView`s where\n * the `DECLARATION_COMPONENT_VIEW` of the current component and the child `LView` does not match\n * (it has been transplanted across components.)\n *\n * Note: `[DECLARATION_COMPONENT_VIEW]` points to itself if the LView is a component view (the\n * simplest / most common case).\n *\n * see also:\n * - https://hackmd.io/@mhevery/rJUJsvv9H write up of the problem\n * - `LContainer[HAS_TRANSPLANTED_VIEWS]` which marks which `LContainer` has transplanted views.\n * - `LContainer[TRANSPLANT_HEAD]` and `LContainer[TRANSPLANT_TAIL]` storage for transplanted\n * - `LView[DECLARATION_LCONTAINER]` similar problem for queries\n * - `LContainer[MOVED_VIEWS]` similar problem for queries\n */\n [DECLARATION_COMPONENT_VIEW]: LView;\n\n /**\n * A declaration point of embedded views (ones instantiated based on the content of a\n * ), null for other types of views.\n *\n * We need to track all embedded views created from a given declaration point so we can prepare\n * query matches in a proper order (query matches are ordered based on their declaration point and\n * _not_ the insertion point).\n */\n [DECLARATION_LCONTAINER]: LContainer|null;\n\n /**\n * More flags for this view. See PreOrderHookFlags for more info.\n */\n [PREORDER_HOOK_FLAGS]: PreOrderHookFlags;\n\n /**\n * The number of direct transplanted views which need a refresh or have descendants themselves\n * that need a refresh but have not marked their ancestors as Dirty. This tells us that during\n * change detection we should still descend to find those children to refresh, even if the parents\n * are not `Dirty`/`CheckAlways`.\n */\n [TRANSPLANTED_VIEWS_TO_REFRESH]: number;\n}\n\n/** Flags associated with an LView (saved in LView[FLAGS]) */\nexport const enum LViewFlags {\n /** The state of the init phase on the first 2 bits */\n InitPhaseStateIncrementer = 0b00000000001,\n InitPhaseStateMask = 0b00000000011,\n\n /**\n * Whether or not the view is in creationMode.\n *\n * This must be stored in the view rather than using `data` as a marker so that\n * we can properly support embedded views. Otherwise, when exiting a child view\n * back into the parent view, `data` will be defined and `creationMode` will be\n * improperly reported as false.\n */\n CreationMode = 0b00000000100,\n\n /**\n * Whether or not this LView instance is on its first processing pass.\n *\n * An LView instance is considered to be on its \"first pass\" until it\n * has completed one creation mode run and one update mode run. At this\n * time, the flag is turned off.\n */\n FirstLViewPass = 0b00000001000,\n\n /** Whether this view has default change detection strategy (checks always) or onPush */\n CheckAlways = 0b00000010000,\n\n /**\n * Whether or not manual change detection is turned on for onPush components.\n *\n * This is a special mode that only marks components dirty in two cases:\n * 1) There has been a change to an @Input property\n * 2) `markDirty()` has been called manually by the user\n *\n * Note that in this mode, the firing of events does NOT mark components\n * dirty automatically.\n *\n * Manual mode is turned off by default for backwards compatibility, as events\n * automatically mark OnPush components dirty in View Engine.\n *\n * TODO: Add a public API to ChangeDetectionStrategy to turn this mode on\n */\n ManualOnPush = 0b00000100000,\n\n /** Whether or not this view is currently dirty (needing check) */\n Dirty = 0b000001000000,\n\n /** Whether or not this view is currently attached to change detection tree. */\n Attached = 0b000010000000,\n\n /** Whether or not this view is destroyed. */\n Destroyed = 0b000100000000,\n\n /** Whether or not this view is the root view */\n IsRoot = 0b001000000000,\n\n /**\n * Whether this moved LView was needs to be refreshed at the insertion location because the\n * declaration was dirty.\n */\n RefreshTransplantedView = 0b0010000000000,\n\n /**\n * Index of the current init phase on last 21 bits\n */\n IndexWithinInitPhaseIncrementer = 0b0100000000000,\n IndexWithinInitPhaseShift = 11,\n IndexWithinInitPhaseReset = 0b0011111111111,\n}\n\n/**\n * Possible states of the init phase:\n * - 00: OnInit hooks to be run.\n * - 01: AfterContentInit hooks to be run\n * - 10: AfterViewInit hooks to be run\n * - 11: All init hooks have been run\n */\nexport const enum InitPhaseState {\n OnInitHooksToBeRun = 0b00,\n AfterContentInitHooksToBeRun = 0b01,\n AfterViewInitHooksToBeRun = 0b10,\n InitPhaseCompleted = 0b11,\n}\n\n/** More flags associated with an LView (saved in LView[PREORDER_HOOK_FLAGS]) */\nexport const enum PreOrderHookFlags {\n /**\n The index of the next pre-order hook to be called in the hooks array, on the first 16\n bits\n */\n IndexOfTheNextPreOrderHookMaskMask = 0b01111111111111111,\n\n /**\n * The number of init hooks that have already been called, on the last 16 bits\n */\n NumberOfInitHooksCalledIncrementer = 0b010000000000000000,\n NumberOfInitHooksCalledShift = 16,\n NumberOfInitHooksCalledMask = 0b11111111111111110000000000000000,\n}\n\n/**\n * Stores a set of OpCodes to process `HostBindingsFunction` associated with a current view.\n *\n * In order to invoke `HostBindingsFunction` we need:\n * 1. 'elementIdx`: Index to the element associated with the `HostBindingsFunction`.\n * 2. 'directiveIdx`: Index to the directive associated with the `HostBindingsFunction`. (This will\n * become the context for the `HostBindingsFunction` invocation.)\n * 3. `bindingRootIdx`: Location where the bindings for the `HostBindingsFunction` start. Internally\n * `HostBindingsFunction` binding indexes start from `0` so we need to add `bindingRootIdx` to\n * it.\n * 4. `HostBindingsFunction`: A host binding function to execute.\n *\n * The above information needs to be encoded into the `HostBindingOpCodes` in an efficient manner.\n *\n * 1. `elementIdx` is encoded into the `HostBindingOpCodes` as `~elementIdx` (so a negative number);\n * 2. `directiveIdx`\n * 3. `bindingRootIdx`\n * 4. `HostBindingsFunction` is passed in as is.\n *\n * The `HostBindingOpCodes` array contains:\n * - negative number to select the element index.\n * - followed by 1 or more of:\n * - a number to select the directive index\n * - a number to select the bindingRoot index\n * - and a function to invoke.\n *\n * ## Example\n *\n * ```\n * const hostBindingOpCodes = [\n * ~30, // Select element 30\n * 40, 45, MyDir.ɵdir.hostBindings // Invoke host bindings on MyDir on element 30;\n * // directiveIdx = 40; bindingRootIdx = 45;\n * 50, 55, OtherDir.ɵdir.hostBindings // Invoke host bindings on OtherDire on element 30\n * // directiveIdx = 50; bindingRootIdx = 55;\n * ]\n * ```\n *\n * ## Pseudocode\n * ```\n * const hostBindingOpCodes = tView.hostBindingOpCodes;\n * if (hostBindingOpCodes === null) return;\n * for (let i = 0; i < hostBindingOpCodes.length; i++) {\n * const opCode = hostBindingOpCodes[i] as number;\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 * const directiveIdx = opCode;\n * const bindingRootIndx = hostBindingOpCodes[++i] as number;\n * const hostBindingFn = hostBindingOpCodes[++i] as HostBindingsFunction;\n * setBindingRootForHostBindings(bindingRootIndx, directiveIdx);\n * const context = lView[directiveIdx];\n * hostBindingFn(RenderFlags.Update, context);\n * }\n * }\n * ```\n *\n */\nexport interface HostBindingOpCodes extends Array> {\n __brand__: 'HostBindingOpCodes';\n debug?: string[];\n}\n\n/**\n * Explicitly marks `TView` as a specific type in `ngDevMode`\n *\n * It is useful to know conceptually what time of `TView` we are dealing with when\n * debugging an application (even if the runtime does not need it.) For this reason\n * we store this information in the `ngDevMode` `TView` and than use it for\n * better debugging experience.\n */\nexport const enum TViewType {\n /**\n * Root `TView` is the used to bootstrap components into. It is used in conjunction with\n * `LView` which takes an existing DOM node not owned by Angular and wraps it in `TView`/`LView`\n * so that other components can be loaded into it.\n */\n Root = 0,\n\n /**\n * `TView` associated with a Component. This would be the `TView` directly associated with the\n * component view (as opposed an `Embedded` `TView` which would be a child of `Component` `TView`)\n */\n Component = 1,\n\n /**\n * `TView` associated with a template. Such as `*ngIf`, `` etc... A `Component`\n * can have zero or more `Embedede` `TView`s.\n */\n Embedded = 2,\n}\n\n/**\n * Converts `TViewType` into human readable text.\n * Make sure this matches with `TViewType`\n */\nexport const TViewTypeAsString = [\n 'Root', // 0\n 'Component', // 1\n 'Embedded', // 2\n] as const;\n\n\n/**\n * The static data for an LView (shared between all templates of a\n * given type).\n *\n * Stored on the `ComponentDef.tView`.\n */\nexport interface TView {\n /**\n * Type of `TView` (`Root`|`Component`|`Embedded`).\n */\n type: TViewType;\n\n /**\n * This is a blueprint used to generate LView instances for this TView. Copying this\n * blueprint is faster than creating a new LView from scratch.\n */\n blueprint: LView;\n\n /**\n * The template function used to refresh the view of dynamically created views\n * and components. Will be null for inline views.\n */\n template: ComponentTemplate<{}>|null;\n\n /**\n * A function containing query-related instructions.\n */\n viewQuery: ViewQueriesFunction<{}>|null;\n\n /**\n * A `TNode` representing the declaration location of this `TView` (not part of this TView).\n */\n declTNode: TNode|null;\n\n // FIXME(misko): Why does `TView` not have `declarationTView` property?\n\n /** Whether or not this template has been processed in creation mode. */\n firstCreatePass: boolean;\n\n /**\n * Whether or not this template has been processed in update mode (e.g. change detected)\n *\n * `firstUpdatePass` is used by styling to set up `TData` to contain metadata about the styling\n * instructions. (Mainly to build up a linked list of styling priority order.)\n *\n * Typically this function gets cleared after first execution. If exception is thrown then this\n * flag can remain turned un until there is first successful (no exception) pass. This means that\n * individual styling instructions keep track of if they have already been added to the linked\n * list to prevent double adding.\n */\n firstUpdatePass: boolean;\n\n /** Static data equivalent of LView.data[]. Contains TNodes, PipeDefInternal or TI18n. */\n data: TData;\n\n /**\n * The binding start index is the index at which the data array\n * starts to store bindings only. Saving this value ensures that we\n * will begin reading bindings at the correct point in the array when\n * we are in update mode.\n *\n * -1 means that it has not been initialized.\n */\n bindingStartIndex: number;\n\n /**\n * The index where the \"expando\" section of `LView` begins. The expando\n * section contains injectors, directive instances, and host binding values.\n * Unlike the \"decls\" and \"vars\" sections of `LView`, the length of this\n * section cannot be calculated at compile-time because directives are matched\n * at runtime to preserve locality.\n *\n * We store this start index so we know where to start checking host bindings\n * in `setHostBindings`.\n */\n expandoStartIndex: number;\n\n /**\n * Whether or not there are any static view queries tracked on this view.\n *\n * We store this so we know whether or not we should do a view query\n * refresh after creation mode to collect static query results.\n */\n staticViewQueries: boolean;\n\n /**\n * Whether or not there are any static content queries tracked on this view.\n *\n * We store this so we know whether or not we should do a content query\n * refresh after creation mode to collect static query results.\n */\n staticContentQueries: boolean;\n\n /**\n * A reference to the first child node located in the view.\n */\n firstChild: TNode|null;\n\n /**\n * Stores the OpCodes to be replayed during change-detection to process the `HostBindings`\n *\n * See `HostBindingOpCodes` for encoding details.\n */\n hostBindingOpCodes: HostBindingOpCodes|null;\n\n /**\n * Full registry of directives and components that may be found in this view.\n *\n * It's necessary to keep a copy of the full def list on the TView so it's possible\n * to render template functions without a host component.\n */\n directiveRegistry: DirectiveDefList|null;\n\n /**\n * Full registry of pipes that may be found in this view.\n *\n * The property is either an array of `PipeDefs`s or a function which returns the array of\n * `PipeDefs`s. The function is necessary to be able to support forward declarations.\n *\n * It's necessary to keep a copy of the full def list on the TView so it's possible\n * to render template functions without a host component.\n */\n pipeRegistry: PipeDefList|null;\n\n /**\n * Array of ngOnInit, ngOnChanges and ngDoCheck hooks that should be executed for this view in\n * creation mode.\n *\n * This array has a flat structure and contains TNode indices, directive indices (where an\n * instance can be found in `LView`) and hook functions. TNode index is followed by the directive\n * index and a hook function. If there are multiple hooks for a given TNode, the TNode index is\n * not repeated and the next lifecycle hook information is stored right after the previous hook\n * function. This is done so that at runtime the system can efficiently iterate over all of the\n * functions to invoke without having to make any decisions/lookups.\n */\n preOrderHooks: HookData|null;\n\n /**\n * Array of ngOnChanges and ngDoCheck hooks that should be executed for this view in update mode.\n *\n * This array has the same structure as the `preOrderHooks` one.\n */\n preOrderCheckHooks: HookData|null;\n\n /**\n * Array of ngAfterContentInit and ngAfterContentChecked hooks that should be executed\n * for this view in creation mode.\n *\n * Even indices: Directive index\n * Odd indices: Hook function\n */\n contentHooks: HookData|null;\n\n /**\n * Array of ngAfterContentChecked hooks that should be executed for this view in update\n * mode.\n *\n * Even indices: Directive index\n * Odd indices: Hook function\n */\n contentCheckHooks: HookData|null;\n\n /**\n * Array of ngAfterViewInit and ngAfterViewChecked hooks that should be executed for\n * this view in creation mode.\n *\n * Even indices: Directive index\n * Odd indices: Hook function\n */\n viewHooks: HookData|null;\n\n /**\n * Array of ngAfterViewChecked hooks that should be executed for this view in\n * update mode.\n *\n * Even indices: Directive index\n * Odd indices: Hook function\n */\n viewCheckHooks: HookData|null;\n\n /**\n * Array of ngOnDestroy hooks that should be executed when this view is destroyed.\n *\n * Even indices: Directive index\n * Odd indices: Hook function\n */\n destroyHooks: DestroyHookData|null;\n\n /**\n * When a view is destroyed, listeners need to be released and outputs need to be\n * unsubscribed. This cleanup array stores both listener data (in chunks of 4)\n * and output data (in chunks of 2) for a particular view. Combining the arrays\n * saves on memory (70 bytes per array) and on a few bytes of code size (for two\n * separate for loops).\n *\n * If it's a native DOM listener or output subscription being stored:\n * 1st index is: event name `name = tView.cleanup[i+0]`\n * 2nd index is: index of native element or a function that retrieves global target (window,\n * document or body) reference based on the native element:\n * `typeof idxOrTargetGetter === 'function'`: global target getter function\n * `typeof idxOrTargetGetter === 'number'`: index of native element\n *\n * 3rd index is: index of listener function `listener = lView[CLEANUP][tView.cleanup[i+2]]`\n * 4th index is: `useCaptureOrIndx = tView.cleanup[i+3]`\n * `typeof useCaptureOrIndx == 'boolean' : useCapture boolean\n * `typeof useCaptureOrIndx == 'number':\n * `useCaptureOrIndx >= 0` `removeListener = LView[CLEANUP][useCaptureOrIndx]`\n * `useCaptureOrIndx < 0` `subscription = LView[CLEANUP][-useCaptureOrIndx]`\n *\n * If it's an output subscription or query list destroy hook:\n * 1st index is: output unsubscribe function / query list destroy function\n * 2nd index is: index of function context in LView.cleanupInstances[]\n * `tView.cleanup[i+0].call(lView[CLEANUP][tView.cleanup[i+1]])`\n */\n cleanup: any[]|null;\n\n /**\n * A list of element indices for child components that will need to be\n * refreshed when the current view has finished its check. These indices have\n * already been adjusted for the HEADER_OFFSET.\n *\n */\n components: number[]|null;\n\n /**\n * A collection of queries tracked in a given view.\n */\n queries: TQueries|null;\n\n /**\n * An array of indices pointing to directives with content queries alongside with the\n * corresponding query index. Each entry in this array is a tuple of:\n * - index of the first content query index declared by a given directive;\n * - index of a directive.\n *\n * We are storing those indexes so we can refresh content queries as part of a view refresh\n * process.\n */\n contentQueries: number[]|null;\n\n /**\n * Set of schemas that declare elements to be allowed inside the view.\n */\n schemas: SchemaMetadata[]|null;\n\n /**\n * Array of constants for the view. Includes attribute arrays, local definition arrays etc.\n * Used for directive matching, attribute bindings, local definitions and more.\n */\n consts: TConstants|null;\n\n /**\n * Indicates that there was an error before we managed to complete the first create pass of the\n * view. This means that the view is likely corrupted and we should try to recover it.\n */\n incompleteFirstPass: boolean;\n}\n\nexport const enum RootContextFlags {\n Empty = 0b00,\n DetectChanges = 0b01,\n FlushPlayers = 0b10\n}\n\n\n/**\n * RootContext contains information which is shared for all components which\n * were bootstrapped with {@link renderComponent}.\n */\nexport interface RootContext {\n /**\n * A function used for scheduling change detection in the future. Usually\n * this is `requestAnimationFrame`.\n */\n scheduler: (workFn: () => void) => void;\n\n /**\n * A promise which is resolved when all components are considered clean (not dirty).\n *\n * This promise is overwritten every time a first call to {@link markDirty} is invoked.\n */\n clean: Promise;\n\n /**\n * RootComponents - The components that were instantiated by the call to\n * {@link renderComponent}.\n */\n components: {}[];\n\n /**\n * The player flushing handler to kick off all animations\n */\n playerHandler: PlayerHandler|null;\n\n /**\n * What render-related operations to run once a scheduler has been set\n */\n flags: RootContextFlags;\n}\n\n/** Single hook callback function. */\nexport type HookFn = () => void;\n\n/**\n * Information necessary to call a hook. E.g. the callback that\n * needs to invoked and the index at which to find its context.\n */\nexport type HookEntry = number|HookFn;\n\n/**\n * Array of hooks that should be executed for a view and their directive indices.\n *\n * For each node of the view, the following data is stored:\n * 1) Node index (optional)\n * 2) A series of number/function pairs where:\n * - even indices are directive indices\n * - odd indices are hook functions\n *\n * Special cases:\n * - a negative directive index flags an init hook (ngOnInit, ngAfterContentInit, ngAfterViewInit)\n */\nexport type HookData = HookEntry[];\n\n/**\n * Array of destroy hooks that should be executed for a view and their directive indices.\n *\n * The array is set up as a series of number/function or number/(number|function)[]:\n * - Even indices represent the context with which hooks should be called.\n * - Odd indices are the hook functions themselves. If a value at an odd index is an array,\n * it represents the destroy hooks of a `multi` provider where:\n * - Even indices represent the index of the provider for which we've registered a destroy hook,\n * inside of the `multi` provider array.\n * - Odd indices are the destroy hook functions.\n * For example:\n * LView: `[0, 1, 2, AService, 4, [BService, CService, DService]]`\n * destroyHooks: `[3, AService.ngOnDestroy, 5, [0, BService.ngOnDestroy, 2, DService.ngOnDestroy]]`\n *\n * In the example above `AService` is a type provider with an `ngOnDestroy`, whereas `BService`,\n * `CService` and `DService` are part of a `multi` provider where only `BService` and `DService`\n * have an `ngOnDestroy` hook.\n */\nexport type DestroyHookData = (HookEntry|HookData)[];\n\n/**\n * Static data that corresponds to the instance-specific data array on an LView.\n *\n * Each node's static data is stored in tData at the same index that it's stored\n * in the data array. Any nodes that do not have static data store a null value in\n * tData to avoid a sparse array.\n *\n * Each pipe's definition is stored here at the same index as its pipe instance in\n * the data array.\n *\n * Each host property's name is stored here at the same index as its value in the\n * data array.\n *\n * Each property binding name is stored here at the same index as its value in\n * the data array. If the binding is an interpolation, the static string values\n * are stored parallel to the dynamic values. Example:\n *\n * id=\"prefix {{ v0 }} a {{ v1 }} b {{ v2 }} suffix\"\n *\n * LView | TView.data\n *------------------------\n * v0 value | 'a'\n * v1 value | 'b'\n * v2 value | id � prefix � suffix\n *\n * Injector bloom filters are also stored here.\n */\nexport type TData =\n (TNode|PipeDef|DirectiveDef|ComponentDef|number|TStylingRange|TStylingKey|\n Type|InjectionToken|TI18n|I18nUpdateOpCodes|TIcu|null|string)[];\n\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\nexport const unusedValueExportToPlacateAjd = 1;\n\n/**\n * Human readable version of the `LView`.\n *\n * `LView` is a data structure used internally to keep track of views. The `LView` is designed for\n * efficiency and so at times it is difficult to read or write tests which assert on its values. For\n * this reason when `ngDevMode` is true we patch a `LView.debug` property which points to\n * `LViewDebug` for easier debugging and test writing. It is the intent of `LViewDebug` to be used\n * in tests.\n */\nexport interface LViewDebug {\n /**\n * Flags associated with the `LView` unpacked into a more readable state.\n *\n * See `LViewFlags` for the flag meanings.\n */\n readonly flags: {\n initPhaseState: number,\n creationMode: boolean,\n firstViewPass: boolean,\n checkAlways: boolean,\n dirty: boolean,\n attached: boolean,\n destroyed: boolean,\n isRoot: boolean,\n indexWithinInitPhase: number,\n };\n\n /**\n * Associated TView\n */\n readonly tView: TView;\n\n /**\n * Parent view (or container)\n */\n readonly parent: LViewDebug|LContainerDebug|null;\n\n /**\n * Next sibling to the `LView`.\n */\n readonly next: LViewDebug|LContainerDebug|null;\n\n /**\n * The context used for evaluation of the `LView`\n *\n * (Usually the component)\n */\n readonly context: {}|null;\n\n /**\n * Hierarchical tree of nodes.\n */\n readonly nodes: DebugNode[];\n\n /**\n * Template structure (no instance data).\n * (Shows how TNodes are connected)\n */\n readonly template: string;\n\n /**\n * HTML representation of the `LView`.\n *\n * This is only approximate to actual HTML as child `LView`s are removed.\n */\n readonly html: string;\n\n /**\n * The host element to which this `LView` is attached.\n */\n readonly hostHTML: string|null;\n\n /**\n * Child `LView`s\n */\n readonly childViews: Array;\n\n /**\n * Sub range of `LView` containing decls (DOM elements).\n */\n readonly decls: LViewDebugRange;\n\n /**\n * Sub range of `LView` containing vars (bindings).\n */\n readonly vars: LViewDebugRange;\n\n /**\n * Sub range of `LView` containing expando (used by DI).\n */\n readonly expando: LViewDebugRange;\n}\n\n/**\n * Human readable version of the `LContainer`\n *\n * `LContainer` is a data structure used internally to keep track of child views. The `LContainer`\n * is designed for efficiency and so at times it is difficult to read or write tests which assert on\n * its values. For this reason when `ngDevMode` is true we patch a `LContainer.debug` property which\n * points to `LContainerDebug` for easier debugging and test writing. It is the intent of\n * `LContainerDebug` to be used in tests.\n */\nexport interface LContainerDebug {\n readonly native: RComment;\n /**\n * Child `LView`s.\n */\n readonly views: LViewDebug[];\n readonly parent: LViewDebug|null;\n readonly movedViews: LView[]|null;\n readonly host: RElement|RComment|LView;\n readonly next: LViewDebug|LContainerDebug|null;\n readonly hasTransplantedViews: boolean;\n}\n\n\n\n/**\n * `LView` is subdivided to ranges where the actual data is stored. Some of these ranges such as\n * `decls` and `vars` are known at compile time. Other such as `i18n` and `expando` are runtime only\n * concepts.\n */\nexport interface LViewDebugRange {\n /**\n * The starting index in `LView` where the range begins. (Inclusive)\n */\n start: number;\n\n /**\n * The ending index in `LView` where the range ends. (Exclusive)\n */\n end: number;\n\n /**\n * The length of the range\n */\n length: number;\n\n /**\n * The merged content of the range. `t` contains data from `TView.data` and `l` contains `LView`\n * data at an index.\n */\n content: LViewDebugRangeContent[];\n}\n\n/**\n * For convenience the static and instance portions of `TView` and `LView` are merged into a single\n * object in `LViewRange`.\n */\nexport interface LViewDebugRangeContent {\n /**\n * Index into original `LView` or `TView.data`.\n */\n index: number;\n\n /**\n * Value from the `TView.data[index]` location.\n */\n t: any;\n\n /**\n * Value from the `LView[index]` location.\n */\n l: any;\n}\n\n\n/**\n * A logical node which comprise into `LView`s.\n *\n */\nexport interface DebugNode {\n /**\n * HTML representation of the node.\n */\n html: string|null;\n\n /**\n * Associated `TNode`\n */\n tNode: TNode;\n\n /**\n * Human readable node type.\n */\n type: string;\n\n /**\n * DOM native node.\n */\n native: Node;\n\n /**\n * Child nodes\n */\n children: DebugNode[];\n\n /**\n * A list of Component/Directive types which need to be instantiated an this location.\n */\n factories: Type[];\n\n /**\n * A list of Component/Directive instances which were instantiated an this location.\n */\n instances: unknown[];\n\n /**\n * NodeInjector information.\n */\n injector: NodeInjectorDebug;\n\n /**\n * Injector resolution path.\n */\n injectorResolutionPath: any;\n}\n\nexport interface NodeInjectorDebug {\n /**\n * Instance bloom. Does the current injector have a provider with a given bloom mask.\n */\n bloom: string;\n\n\n /**\n * Cumulative bloom. Do any of the above injectors have a provider with a given bloom mask.\n */\n cumulativeBloom: string;\n\n /**\n * A list of providers associated with this injector.\n */\n providers: (Type|DirectiveDef|ComponentDef)[];\n\n /**\n * A list of providers associated with this injector visible to the view of the component only.\n */\n viewProviders: Type[];\n\n\n /**\n * Location of the parent `TNode`.\n */\n parentInjectorIndex: number;\n}","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {LContainer, TYPE} from './container';\nimport {ComponentDef, DirectiveDef} from './definition';\nimport {TNode, TNodeFlags} from './node';\nimport {RNode} from './renderer_dom';\nimport {FLAGS, LView, LViewFlags} from './view';\n\n\n/**\n * True if `value` is `LView`.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\nexport function isLView(value: RNode|LView|LContainer|{}|null): value is LView {\n return Array.isArray(value) && typeof value[TYPE] === 'object';\n}\n\n/**\n * True if `value` is `LContainer`.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\nexport function isLContainer(value: RNode|LView|LContainer|{}|null): value is LContainer {\n return Array.isArray(value) && value[TYPE] === true;\n}\n\nexport function isContentQueryHost(tNode: TNode): boolean {\n return (tNode.flags & TNodeFlags.hasContentQuery) !== 0;\n}\n\nexport function isComponentHost(tNode: TNode): boolean {\n return (tNode.flags & TNodeFlags.isComponentHost) === TNodeFlags.isComponentHost;\n}\n\nexport function isDirectiveHost(tNode: TNode): boolean {\n return (tNode.flags & TNodeFlags.isDirectiveHost) === TNodeFlags.isDirectiveHost;\n}\n\nexport function isComponentDef(def: DirectiveDef): def is ComponentDef {\n return (def as ComponentDef).template !== null;\n}\n\nexport function isRootView(target: LView): boolean {\n return (target[FLAGS] & LViewFlags.IsRoot) !== 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\nimport {assertDefined, assertEqual, assertNumber, throwError} from '../util/assert';\n\nimport {getComponentDef, getNgModuleDef} from './definition';\nimport {LContainer} from './interfaces/container';\nimport {DirectiveDef} from './interfaces/definition';\nimport {TIcu} from './interfaces/i18n';\nimport {NodeInjectorOffset} from './interfaces/injector';\nimport {TNode} from './interfaces/node';\nimport {isLContainer, isLView} from './interfaces/type_checks';\nimport {DECLARATION_COMPONENT_VIEW, HEADER_OFFSET, LView, T_HOST, TVIEW, TView} from './interfaces/view';\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\nexport function assertTNodeForLView(tNode: TNode, lView: LView) {\n assertTNodeForTView(tNode, lView[TVIEW]);\n}\n\nexport function assertTNodeForTView(tNode: TNode, tView: TView) {\n assertTNode(tNode);\n tNode.hasOwnProperty('tView_') &&\n assertEqual(\n (tNode as any as {tView_: TView}).tView_, tView,\n 'This TNode does not belong to this TView.');\n}\n\nexport function assertTNode(tNode: TNode) {\n assertDefined(tNode, 'TNode must be defined');\n if (!(tNode && typeof tNode === 'object' && tNode.hasOwnProperty('directiveStylingLast'))) {\n throwError('Not of type TNode, got: ' + tNode);\n }\n}\n\n\nexport function assertTIcu(tIcu: TIcu) {\n assertDefined(tIcu, 'Expected TIcu to be defined');\n if (!(typeof tIcu.currentCaseLViewIndex === 'number')) {\n throwError('Object is not of TIcu type.');\n }\n}\n\nexport function assertComponentType(\n actual: any,\n msg: string = 'Type passed in is not ComponentType, it does not have \\'ɵcmp\\' property.') {\n if (!getComponentDef(actual)) {\n throwError(msg);\n }\n}\n\nexport function assertNgModuleType(\n actual: any,\n msg: string = 'Type passed in is not NgModuleType, it does not have \\'ɵmod\\' property.') {\n if (!getNgModuleDef(actual)) {\n throwError(msg);\n }\n}\n\nexport function assertCurrentTNodeIsParent(isParent: boolean) {\n assertEqual(isParent, true, 'currentTNode should be a parent');\n}\n\nexport function assertHasParent(tNode: TNode|null) {\n assertDefined(tNode, 'currentTNode should exist!');\n assertDefined(tNode!.parent, 'currentTNode should have a parent');\n}\n\nexport function assertDataNext(lView: LView, index: number, arr?: any[]) {\n if (arr == null) arr = lView;\n assertEqual(\n arr.length, index, `index ${index} expected to be at the end of arr (length ${arr.length})`);\n}\n\nexport function assertLContainer(value: any): asserts value is LContainer {\n assertDefined(value, 'LContainer must be defined');\n assertEqual(isLContainer(value), true, 'Expecting LContainer');\n}\n\nexport function assertLViewOrUndefined(value: any): asserts value is LView|null|undefined {\n value && assertEqual(isLView(value), true, 'Expecting LView or undefined or null');\n}\n\nexport function assertLView(value: any): asserts value is LView {\n assertDefined(value, 'LView must be defined');\n assertEqual(isLView(value), true, 'Expecting LView');\n}\n\nexport function assertFirstCreatePass(tView: TView, errMessage?: string) {\n assertEqual(\n tView.firstCreatePass, true, errMessage || 'Should only be called in first create pass.');\n}\n\nexport function assertFirstUpdatePass(tView: TView, errMessage?: string) {\n assertEqual(\n tView.firstUpdatePass, true, errMessage || 'Should only be called in first update pass.');\n}\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 */\nexport function assertDirectiveDef(obj: any): asserts obj is DirectiveDef {\n if (obj.type === undefined || obj.selectors == undefined || obj.inputs === undefined) {\n throwError(\n `Expected a DirectiveDef/ComponentDef and this object does not seem to have the expected shape.`);\n }\n}\n\nexport function assertIndexInDeclRange(lView: LView, index: number) {\n const tView = lView[1];\n assertBetween(HEADER_OFFSET, tView.bindingStartIndex, index);\n}\n\nexport function assertIndexInVarsRange(lView: LView, index: number) {\n const tView = lView[1];\n assertBetween(tView.bindingStartIndex, tView.expandoStartIndex, index);\n}\n\nexport function assertIndexInExpandoRange(lView: LView, index: number) {\n const tView = lView[1];\n assertBetween(tView.expandoStartIndex, lView.length, index);\n}\n\nexport function assertBetween(lower: number, upper: number, index: number) {\n if (!(lower <= index && index < upper)) {\n throwError(`Index out of range (expecting ${lower} <= ${index} < ${upper})`);\n }\n}\n\nexport function assertProjectionSlots(lView: LView, errMessage?: string) {\n assertDefined(lView[DECLARATION_COMPONENT_VIEW], 'Component views should exist.');\n assertDefined(\n lView[DECLARATION_COMPONENT_VIEW][T_HOST]!.projection,\n errMessage ||\n 'Components with projection nodes () must have projection slots defined.');\n}\n\nexport function assertParentView(lView: LView|null, errMessage?: string) {\n assertDefined(\n lView,\n errMessage || 'Component views should always have a parent view (component\\'s host view)');\n}\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 */\nexport function assertNodeInjector(lView: LView, injectorIndex: number) {\n assertIndexInExpandoRange(lView, injectorIndex);\n assertIndexInExpandoRange(lView, injectorIndex + NodeInjectorOffset.PARENT);\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(\n lView[injectorIndex + NodeInjectorOffset.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\nimport {Type} from '../interface/type';\nimport {stringify} from '../util/stringify';\nimport {NG_FACTORY_DEF} from './fields';\n\n\n/**\n * Definition of what a factory function should look like.\n */\nexport type FactoryFn = {\n /**\n * Subclasses without an explicit constructor call through to the factory of their base\n * definition, providing it with their own constructor to instantiate.\n */\n (t: Type): U;\n\n /**\n * If no constructor to instantiate is provided, an instance of type T itself is created.\n */\n (t?: undefined): T;\n};\n\n\nexport function getFactoryDef(type: any, throwNotFound: true): FactoryFn;\nexport function getFactoryDef(type: any): FactoryFn|null;\nexport function getFactoryDef(type: any, throwNotFound?: boolean): FactoryFn|null {\n const hasFactoryDef = type.hasOwnProperty(NG_FACTORY_DEF);\n if (!hasFactoryDef && throwNotFound === true && ngDevMode) {\n throw new Error(`Type ${stringify(type)} does not have 'ɵfac' property.`);\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/**\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 */\nexport class SimpleChange {\n constructor(public previousValue: any, public currentValue: any, public firstChange: boolean) {}\n /**\n * Check whether the new value is the first value assigned.\n */\n isFirstChange(): boolean {\n return this.firstChange;\n }\n}\n\n/**\n * A hashtable of changes represented by {@link SimpleChange} objects stored\n * at the declared property name they belong to on a Directive or Component. This is\n * the type passed to the `ngOnChanges` hook.\n *\n * @see `OnChanges`\n *\n * @publicApi\n */\nexport interface SimpleChanges {\n [propName: string]: 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\nimport {OnChanges} from '../../interface/lifecycle_hooks';\nimport {SimpleChange, SimpleChanges} from '../../interface/simple_change';\nimport {EMPTY_OBJ} from '../empty';\nimport {DirectiveDef, DirectiveDefFeature} from '../interfaces/definition';\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 */\nexport function ɵɵNgOnChangesFeature(): DirectiveDefFeature {\n return NgOnChangesFeatureImpl;\n}\n\nexport function NgOnChangesFeatureImpl(definition: DirectiveDef) {\n if (definition.type.prototype.ngOnChanges) {\n definition.setInput = ngOnChangesSetInput;\n }\n return rememberChangeHistoryAndInvokeOnChangesHook;\n}\n\n// This option ensures that the ngOnChanges lifecycle hook will be inherited\n// from superclasses (in InheritDefinitionFeature).\n/** @nocollapse */\n// tslint:disable-next-line:no-toplevel-property-access\n(ɵɵNgOnChangesFeature as DirectiveDefFeature).ngInherit = true;\n\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 */\nfunction rememberChangeHistoryAndInvokeOnChangesHook(this: OnChanges) {\n const simpleChangesStore = getSimpleChangesStore(this);\n const current = simpleChangesStore?.current;\n\n if (current) {\n const previous = simpleChangesStore!.previous;\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 (let key in current) {\n previous[key] = current[key];\n }\n }\n simpleChangesStore!.current = null;\n this.ngOnChanges(current);\n }\n}\n\n\nfunction ngOnChangesSetInput(\n this: DirectiveDef, instance: T, value: any, publicName: string, privateName: string): void {\n const simpleChangesStore = getSimpleChangesStore(instance) ||\n setSimpleChangesStore(instance, {previous: EMPTY_OBJ, current: null});\n const current = simpleChangesStore.current || (simpleChangesStore.current = {});\n const previous = simpleChangesStore.previous;\n\n const declaredName = (this.declaredInputs as {[key: string]: string})[publicName];\n const previousChange = previous[declaredName];\n current[declaredName] = new SimpleChange(\n previousChange && previousChange.currentValue, value, previous === EMPTY_OBJ);\n\n (instance as any)[privateName] = value;\n}\n\nconst SIMPLE_CHANGES_STORE = '__ngSimpleChanges__';\n\nfunction getSimpleChangesStore(instance: any): null|NgSimpleChangesStore {\n return instance[SIMPLE_CHANGES_STORE] || null;\n}\n\nfunction setSimpleChangesStore(instance: any, store: NgSimpleChangesStore): NgSimpleChangesStore {\n return instance[SIMPLE_CHANGES_STORE] = store;\n}\n\n/**\n * Data structure which is monkey-patched on the component instance and used by `ngOnChanges`\n * life-cycle hook to track previous input values.\n */\ninterface NgSimpleChangesStore {\n previous: SimpleChanges;\n current: SimpleChanges|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\nexport const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';\nexport const 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\nimport {RNode} from './renderer_dom';\nimport {LView} from './view';\n\n/**\n * This property will be monkey-patched on elements, components and directives\n */\nexport const MONKEY_PATCH_KEY_NAME = '__ngContext__';\n\n/**\n * The internal view context which is specific to a given DOM element, directive or\n * component instance. Each value in here (besides the LView and element node details)\n * can be present, null or undefined. If undefined then it implies the value has not been\n * looked up yet, otherwise, if null, then a lookup was executed and nothing was found.\n *\n * Each value will get filled when the respective value is examined within the getContext\n * function. The component, element and each directive instance will share the same instance\n * of the context.\n */\nexport interface LContext {\n /**\n * The component's parent view data.\n */\n lView: LView;\n\n /**\n * The index instance of the node.\n */\n nodeIndex: number;\n\n /**\n * The instance of the DOM node that is attached to the lNode.\n */\n native: RNode;\n\n /**\n * The instance of the Component node.\n */\n component: {}|null|undefined;\n\n /**\n * The list of active directives that exist on this element.\n */\n directives: any[]|null|undefined;\n\n /**\n * The map of local references (local reference name => element or directive instance) that exist\n * on this element.\n */\n localRefs: {[key: string]: any}|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/**\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 */\nlet DOCUMENT: Document|undefined = undefined;\n\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 */\nexport function setDocument(document: Document|undefined): void {\n DOCUMENT = document;\n}\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 */\nexport function getDocument(): Document {\n if (DOCUMENT !== undefined) {\n return DOCUMENT;\n } else if (typeof document !== 'undefined') {\n return document;\n }\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 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\n/**\n * The goal here is to make sure that the browser DOM API is the Renderer.\n * We do this by defining a subset of DOM API to be the renderer and then\n * use that at runtime for rendering.\n *\n * At runtime we can then use the DOM api directly, in server or web-worker\n * it will be easy to implement such API.\n */\n\nimport {RendererStyleFlags2, RendererType2} from '../../render/api_flags';\nimport {TrustedHTML, TrustedScript, TrustedScriptURL} from '../../util/security/trusted_type_defs';\nimport {getDocument} from './document';\nimport {RComment, RElement, RNode, RText} from './renderer_dom';\n\n// TODO: cleanup once the code is merged in angular/angular\nexport enum RendererStyleFlags3 {\n Important = 1 << 0,\n DashCase = 1 << 1\n}\n\nexport type Renderer3 = ObjectOrientedRenderer3|ProceduralRenderer3;\n\nexport type GlobalTargetName = 'document'|'window'|'body';\n\nexport type GlobalTargetResolver = (element: any) => {\n name: GlobalTargetName, target: EventTarget\n};\n\n/**\n * Object Oriented style of API needed to create elements and text nodes.\n *\n * This is the native browser API style, e.g. operations are methods on individual objects\n * like HTMLElement. With this style, no additional code is needed as a facade\n * (reducing payload size).\n * */\nexport interface ObjectOrientedRenderer3 {\n createComment(data: string): RComment;\n createElement(tagName: string): RElement;\n createElementNS(namespace: string, tagName: string): RElement;\n createTextNode(data: string): RText;\n\n querySelector(selectors: string): RElement|null;\n}\n\n/** Returns whether the `renderer` is a `ProceduralRenderer3` */\nexport function isProceduralRenderer(renderer: ProceduralRenderer3|\n ObjectOrientedRenderer3): renderer is ProceduralRenderer3 {\n return !!((renderer as any).listen);\n}\n\n/**\n * Procedural style of API needed to create elements and text nodes.\n *\n * In non-native browser environments (e.g. platforms such as web-workers), this is the\n * facade that enables element manipulation. This also facilitates backwards compatibility\n * with Renderer2.\n */\nexport interface ProceduralRenderer3 {\n destroy(): void;\n createComment(value: string): RComment;\n createElement(name: string, namespace?: string|null): RElement;\n createText(value: string): RText;\n /**\n * This property is allowed to be null / undefined,\n * in which case the view engine won't call it.\n * This is used as a performance optimization for production mode.\n */\n destroyNode?: ((node: RNode) => void)|null;\n appendChild(parent: RElement, newChild: RNode): void;\n insertBefore(parent: RNode, newChild: RNode, refChild: RNode|null, isMove?: boolean): void;\n removeChild(parent: RElement, oldChild: RNode, isHostElement?: boolean): void;\n selectRootElement(selectorOrNode: string|any, preserveContent?: boolean): RElement;\n\n parentNode(node: RNode): RElement|null;\n nextSibling(node: RNode): RNode|null;\n\n setAttribute(\n el: RElement, name: string, value: string|TrustedHTML|TrustedScript|TrustedScriptURL,\n namespace?: string|null): void;\n removeAttribute(el: RElement, name: string, namespace?: string|null): void;\n addClass(el: RElement, name: string): void;\n removeClass(el: RElement, name: string): void;\n setStyle(\n el: RElement, style: string, value: any,\n flags?: RendererStyleFlags2|RendererStyleFlags3): void;\n removeStyle(el: RElement, style: string, flags?: RendererStyleFlags2|RendererStyleFlags3): void;\n setProperty(el: RElement, name: string, value: any): void;\n setValue(node: RText|RComment, value: string): void;\n\n // TODO(misko): Deprecate in favor of addEventListener/removeEventListener\n listen(\n target: GlobalTargetName|RNode, eventName: string,\n callback: (event: any) => boolean | void): () => void;\n}\n\nexport interface RendererFactory3 {\n createRenderer(hostElement: RElement|null, rendererType: RendererType2|null): Renderer3;\n begin?(): void;\n end?(): void;\n}\n\nexport const domRendererFactory3: RendererFactory3 = {\n createRenderer: (hostElement: RElement|null, rendererType: RendererType2|null): Renderer3 => {\n return getDocument();\n }\n};\n\n\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\nexport const 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\nimport {assertDefined, assertDomNode, assertGreaterThan, assertGreaterThanOrEqual, assertIndexInRange, assertLessThan} from '../../util/assert';\nimport {assertTNode, assertTNodeForLView} from '../assert';\nimport {LContainer, TYPE} from '../interfaces/container';\nimport {LContext, MONKEY_PATCH_KEY_NAME} from '../interfaces/context';\nimport {TConstants, TNode} from '../interfaces/node';\nimport {isProceduralRenderer} from '../interfaces/renderer';\nimport {RNode} from '../interfaces/renderer_dom';\nimport {isLContainer, isLView} from '../interfaces/type_checks';\nimport {FLAGS, HEADER_OFFSET, HOST, LView, LViewFlags, PARENT, PREORDER_HOOK_FLAGS, RENDERER, TData, TRANSPLANTED_VIEWS_TO_REFRESH, TView} from '../interfaces/view';\n\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 */\nexport function unwrapRNode(value: RNode|LView|LContainer): RNode {\n while (Array.isArray(value)) {\n value = value[HOST] as any;\n }\n return value as RNode;\n}\n\n/**\n * Returns `LView` or `null` if not found.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\nexport function unwrapLView(value: RNode|LView|LContainer): LView|null {\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 as LView;\n value = value[HOST] as any;\n }\n return null;\n}\n\n/**\n * Returns `LContainer` or `null` if not found.\n * @param value wrapped value of `RNode`, `LView`, `LContainer`\n */\nexport function unwrapLContainer(value: RNode|LView|LContainer): LContainer|null {\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 as LContainer;\n value = value[HOST] as any;\n }\n return null;\n}\n\n/**\n * Retrieves an element value from the provided `viewData`, by unwrapping\n * from any containers, component views, or style contexts.\n */\nexport function getNativeByIndex(index: number, lView: LView): RNode {\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/**\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 */\nexport function getNativeByTNode(tNode: TNode, lView: LView): RNode {\n ngDevMode && assertTNodeForLView(tNode, lView);\n ngDevMode && assertIndexInRange(lView, tNode.index);\n const node: RNode = unwrapRNode(lView[tNode.index]);\n ngDevMode && !isProceduralRenderer(lView[RENDERER]) && assertDomNode(node);\n return node;\n}\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 */\nexport function getNativeByTNodeOrNull(tNode: TNode|null, lView: LView): RNode|null {\n const index = tNode === null ? -1 : tNode.index;\n if (index !== -1) {\n ngDevMode && assertTNodeForLView(tNode!, lView);\n const node: RNode|null = unwrapRNode(lView[index]);\n ngDevMode && node !== null && !isProceduralRenderer(lView[RENDERER]) && assertDomNode(node);\n return node;\n }\n return null;\n}\n\n\n// fixme(misko): The return Type should be `TNode|null`\nexport function getTNode(tView: TView, index: number): TNode {\n ngDevMode && assertGreaterThan(index, -1, 'wrong index for TNode');\n ngDevMode && assertLessThan(index, tView.data.length, 'wrong index for TNode');\n const tNode = tView.data[index] as TNode;\n ngDevMode && tNode !== null && assertTNode(tNode);\n return tNode;\n}\n\n/** Retrieves a value from any `LView` or `TData`. */\nexport function load(view: LView|TData, index: number): T {\n ngDevMode && assertIndexInRange(view, index);\n return view[index];\n}\n\nexport function getComponentLViewByIndex(nodeIndex: number, hostView: LView): LView {\n // Could be an LView or an LContainer. If LContainer, unwrap to find LView.\n ngDevMode && assertIndexInRange(hostView, nodeIndex);\n const slotValue = hostView[nodeIndex];\n const lView = isLView(slotValue) ? slotValue : slotValue[HOST];\n return lView;\n}\n\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 */\nexport function readPatchedData(target: any): LView|LContext|null {\n ngDevMode && assertDefined(target, 'Target expected');\n return target[MONKEY_PATCH_KEY_NAME] || null;\n}\n\nexport function readPatchedLView(target: any): LView|null {\n const value = readPatchedData(target);\n if (value) {\n return Array.isArray(value) ? value : (value as LContext).lView;\n }\n return null;\n}\n\n/** Checks whether a given view is in creation mode */\nexport function isCreationMode(view: LView): boolean {\n return (view[FLAGS] & LViewFlags.CreationMode) === LViewFlags.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 */\nexport function viewAttachedToChangeDetector(view: LView): boolean {\n return (view[FLAGS] & LViewFlags.Attached) === LViewFlags.Attached;\n}\n\n/** Returns a boolean for whether the view is attached to a container. */\nexport function viewAttachedToContainer(view: LView): boolean {\n return isLContainer(view[PARENT]);\n}\n\n/** Returns a constant from `TConstants` instance. */\nexport function getConstant(consts: TConstants|null, index: null|undefined): null;\nexport function getConstant(consts: TConstants, index: number): T|null;\nexport function getConstant(consts: TConstants|null, index: number|null|undefined): T|null;\nexport function getConstant(consts: TConstants|null, index: number|null|undefined): T|null {\n if (index === null || index === undefined) return null;\n ngDevMode && assertIndexInRange(consts!, index);\n return consts![index] as unknown as T;\n}\n\n/**\n * Resets the pre-order hook flags of the view.\n * @param lView the LView on which the flags are reset\n */\nexport function resetPreOrderHookFlags(lView: LView) {\n lView[PREORDER_HOOK_FLAGS] = 0;\n}\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 */\nexport function updateTransplantedViewCount(lContainer: LContainer, amount: 1|- 1) {\n lContainer[TRANSPLANTED_VIEWS_TO_REFRESH] += amount;\n let viewOrContainer: LView|LContainer = lContainer;\n let parent: LView|LContainer|null = lContainer[PARENT];\n while (parent !== null &&\n ((amount === 1 && viewOrContainer[TRANSPLANTED_VIEWS_TO_REFRESH] === 1) ||\n (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\nimport {InjectFlags} from '../di/interface/injector';\nimport {assertDefined, assertEqual, assertGreaterThanOrEqual, assertLessThan, assertNotEqual} from '../util/assert';\nimport {assertLViewOrUndefined, assertTNodeForLView, assertTNodeForTView} from './assert';\nimport {DirectiveDef} from './interfaces/definition';\nimport {TNode, TNodeType} from './interfaces/node';\nimport {CONTEXT, DECLARATION_VIEW, HEADER_OFFSET, LView, OpaqueViewState, T_HOST, TData, TVIEW, TView, TViewType} from './interfaces/view';\nimport {MATH_ML_NAMESPACE, SVG_NAMESPACE} from './namespaces';\nimport {getTNode} from './util/view_utils';\n\n\n/**\n *\n */\ninterface LFrame {\n /**\n * Parent LFrame.\n *\n * This is needed when `leaveView` is called to restore the previous state.\n */\n parent: LFrame;\n\n /**\n * Child LFrame.\n *\n * This is used to cache existing LFrames to relieve the memory pressure.\n */\n child: LFrame|null;\n\n /**\n * State of the current view being processed.\n *\n * An array of nodes (text, element, container, etc), pipes, their bindings, and\n * any local variables that need to be stored between invocations.\n */\n lView: LView;\n\n /**\n * Current `TView` associated with the `LFrame.lView`.\n *\n * One can get `TView` from `lFrame[TVIEW]` however because it is so common it makes sense to\n * store it in `LFrame` for perf reasons.\n */\n tView: TView;\n\n /**\n * Used to set the parent property when nodes are created and track query results.\n *\n * This is used in conjunction with `isParent`.\n */\n currentTNode: TNode|null;\n\n /**\n * If `isParent` is:\n * - `true`: then `currentTNode` points to a parent node.\n * - `false`: then `currentTNode` points to previous node (sibling).\n */\n isParent: boolean;\n\n /**\n * Index of currently selected element in LView.\n *\n * Used by binding instructions. Updated as part of advance instruction.\n */\n selectedIndex: number;\n\n /**\n * Current pointer to the binding index.\n */\n bindingIndex: number;\n\n /**\n * The last viewData retrieved by nextContext().\n * Allows building nextContext() and reference() calls.\n *\n * e.g. const inner = x().$implicit; const outer = x().$implicit;\n */\n contextLView: LView;\n\n /**\n * Store the element depth count. This is used to identify the root elements of the template\n * so that we can then attach patch data `LView` to only those elements. We know that those\n * are the only places where the patch data could change, this way we will save on number\n * of places where tha patching occurs.\n */\n elementDepthCount: number;\n\n /**\n * Current namespace to be used when creating elements\n */\n currentNamespace: string|null;\n\n\n /**\n * The root index from which pure function instructions should calculate their binding\n * indices. In component views, this is TView.bindingStartIndex. In a host binding\n * context, this is the TView.expandoStartIndex + any dirs/hostVars before the given dir.\n */\n bindingRootIndex: number;\n\n /**\n * Current index of a View or Content Query which needs to be processed next.\n * We iterate over the list of Queries and increment current query index at every step.\n */\n currentQueryIndex: number;\n\n /**\n * When host binding is executing this points to the directive index.\n * `TView.data[currentDirectiveIndex]` is `DirectiveDef`\n * `LView[currentDirectiveIndex]` is directive instance.\n */\n currentDirectiveIndex: number;\n\n /**\n * Are we currently in i18n block as denoted by `ɵɵelementStart` and `ɵɵelementEnd`.\n *\n * This information is needed because while we are in i18n block all elements must be pre-declared\n * in the translation. (i.e. `Hello �#2�World�/#2�!` pre-declares element at `�#2�` location.)\n * This allocates `TNodeType.Placeholder` element at location `2`. If translator removes `�#2�`\n * from translation than the runtime must also ensure tha element at `2` does not get inserted\n * into the DOM. The translation does not carry information about deleted elements. Therefor the\n * only way to know that an element is deleted is that it was not pre-declared in the translation.\n *\n * This flag works by ensuring that elements which are created without pre-declaration\n * (`TNodeType.Placeholder`) are not inserted into the DOM render tree. (It does mean that the\n * element still gets instantiated along with all of its behavior [directives])\n */\n inI18n: boolean;\n}\n\n/**\n * All implicit instruction state is stored here.\n *\n * It is useful to have a single object where all of the state is stored as a mental model\n * (rather it being spread across many different variables.)\n *\n * PERF NOTE: Turns out that writing to a true global variable is slower than\n * having an intermediate object with properties.\n */\ninterface InstructionState {\n /**\n * Current `LFrame`\n *\n * `null` if we have not called `enterView`\n */\n lFrame: LFrame;\n\n /**\n * Stores whether directives should be matched to elements.\n *\n * When template contains `ngNonBindable` then we need to prevent the runtime from matching\n * directives on children of that element.\n *\n * Example:\n * ```\n * \n * Should match component / directive.\n * \n *
\n * \n * Should not match component / directive because we are in ngNonBindable.\n * \n *
\n * ```\n */\n bindingsEnabled: boolean;\n\n /**\n * In this mode, any changes in bindings will throw an ExpressionChangedAfterChecked error.\n *\n * Necessary to support ChangeDetectorRef.checkNoChanges().\n *\n * checkNoChanges Runs only in devmode=true and verifies that no unintended changes exist in\n * the change detector or its children.\n */\n isInCheckNoChangesMode: boolean;\n}\n\nconst instructionState: InstructionState = {\n lFrame: createLFrame(null),\n bindingsEnabled: true,\n isInCheckNoChangesMode: false,\n};\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 */\nexport function specOnlyIsInstructionStateEmpty(): boolean {\n return instructionState.lFrame.parent === null;\n}\n\n\nexport function getElementDepthCount() {\n return instructionState.lFrame.elementDepthCount;\n}\n\nexport function increaseElementDepthCount() {\n instructionState.lFrame.elementDepthCount++;\n}\n\nexport function decreaseElementDepthCount() {\n instructionState.lFrame.elementDepthCount--;\n}\n\nexport function getBindingsEnabled(): boolean {\n return instructionState.bindingsEnabled;\n}\n\n\n/**\n * Enables directive matching on elements.\n *\n * * Example:\n * ```\n * \n * Should match component / directive.\n * \n *
\n * \n * \n * Should not match component / directive because we are in ngNonBindable.\n * \n * \n *
\n * ```\n *\n * @codeGenApi\n */\nexport function ɵɵenableBindings(): void {\n instructionState.bindingsEnabled = true;\n}\n\n/**\n * Disables directive matching on element.\n *\n * * Example:\n * ```\n * \n * Should match component / directive.\n * \n *
\n * \n * \n * Should not match component / directive because we are in ngNonBindable.\n * \n * \n *
\n * ```\n *\n * @codeGenApi\n */\nexport function ɵɵdisableBindings(): void {\n instructionState.bindingsEnabled = false;\n}\n\n/**\n * Return the current `LView`.\n */\nexport function getLView(): LView {\n return instructionState.lFrame.lView;\n}\n\n/**\n * Return the current `TView`.\n */\nexport function getTView(): TView {\n return instructionState.lFrame.tView;\n}\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 */\nexport function ɵɵrestoreView(viewToRestore: OpaqueViewState) {\n instructionState.lFrame.contextLView = viewToRestore as any as LView;\n}\n\n\nexport function getCurrentTNode(): TNode|null {\n let currentTNode = getCurrentTNodePlaceholderOk();\n while (currentTNode !== null && currentTNode.type === TNodeType.Placeholder) {\n currentTNode = currentTNode.parent;\n }\n return currentTNode;\n}\n\nexport function getCurrentTNodePlaceholderOk(): TNode|null {\n return instructionState.lFrame.currentTNode;\n}\n\nexport function getCurrentParentTNode(): TNode|null {\n const lFrame = instructionState.lFrame;\n const currentTNode = lFrame.currentTNode;\n return lFrame.isParent ? currentTNode : currentTNode!.parent;\n}\n\nexport function setCurrentTNode(tNode: TNode|null, isParent: boolean) {\n ngDevMode && tNode && assertTNodeForTView(tNode, instructionState.lFrame.tView);\n const lFrame = instructionState.lFrame;\n lFrame.currentTNode = tNode;\n lFrame.isParent = isParent;\n}\n\nexport function isCurrentTNodeParent(): boolean {\n return instructionState.lFrame.isParent;\n}\n\nexport function setCurrentTNodeAsNotParent(): void {\n instructionState.lFrame.isParent = false;\n}\nexport function setCurrentTNodeAsParent(): void {\n instructionState.lFrame.isParent = true;\n}\n\nexport function getContextLView(): LView {\n return instructionState.lFrame.contextLView;\n}\n\nexport function isInCheckNoChangesMode(): boolean {\n // TODO(misko): remove this from the LView since it is ngDevMode=true mode only.\n return instructionState.isInCheckNoChangesMode;\n}\n\nexport function setIsInCheckNoChangesMode(mode: boolean): void {\n instructionState.isInCheckNoChangesMode = mode;\n}\n\n// top level variables should not be exported for performance reasons (PERF_NOTES.md)\nexport function getBindingRoot() {\n const lFrame = instructionState.lFrame;\n let index = lFrame.bindingRootIndex;\n if (index === -1) {\n index = lFrame.bindingRootIndex = lFrame.tView.bindingStartIndex;\n }\n return index;\n}\n\nexport function getBindingIndex(): number {\n return instructionState.lFrame.bindingIndex;\n}\n\nexport function setBindingIndex(value: number): number {\n return instructionState.lFrame.bindingIndex = value;\n}\n\nexport function nextBindingIndex(): number {\n return instructionState.lFrame.bindingIndex++;\n}\n\nexport function incrementBindingIndex(count: number): number {\n const lFrame = instructionState.lFrame;\n const index = lFrame.bindingIndex;\n lFrame.bindingIndex = lFrame.bindingIndex + count;\n return index;\n}\n\nexport function isInI18nBlock() {\n return instructionState.lFrame.inI18n;\n}\n\nexport function setInI18nBlock(isInI18nBlock: boolean): void {\n instructionState.lFrame.inI18n = isInI18nBlock;\n}\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 */\nexport function setBindingRootForHostBindings(\n bindingRootIndex: number, currentDirectiveIndex: number) {\n const lFrame = instructionState.lFrame;\n lFrame.bindingIndex = lFrame.bindingRootIndex = bindingRootIndex;\n setCurrentDirectiveIndex(currentDirectiveIndex);\n}\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 */\nexport function getCurrentDirectiveIndex(): number {\n return instructionState.lFrame.currentDirectiveIndex;\n}\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 */\nexport function setCurrentDirectiveIndex(currentDirectiveIndex: number): void {\n instructionState.lFrame.currentDirectiveIndex = currentDirectiveIndex;\n}\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 */\nexport function getCurrentDirectiveDef(tData: TData): DirectiveDef|null {\n const currentDirectiveIndex = instructionState.lFrame.currentDirectiveIndex;\n return currentDirectiveIndex === -1 ? null : tData[currentDirectiveIndex] as DirectiveDef;\n}\n\nexport function getCurrentQueryIndex(): number {\n return instructionState.lFrame.currentQueryIndex;\n}\n\nexport function setCurrentQueryIndex(value: number): void {\n instructionState.lFrame.currentQueryIndex = value;\n}\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 */\nfunction getDeclarationTNode(lView: LView): TNode|null {\n const tView = lView[TVIEW];\n\n // Return the declaration parent for embedded views\n if (tView.type === TViewType.Embedded) {\n ngDevMode && assertDefined(tView.declTNode, 'Embedded TNodes should have declaration parents.');\n return tView.declTNode;\n }\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 // Falling back to `T_HOST` in case we cross component boundary.\n if (tView.type === TViewType.Component) {\n return lView[T_HOST];\n }\n\n // Remaining TNode type is `TViewType.Root` which doesn't have a parent TNode.\n return null;\n}\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 */\nexport function enterDI(lView: LView, tNode: TNode, flags: InjectFlags) {\n ngDevMode && assertLViewOrUndefined(lView);\n\n if (flags & InjectFlags.SkipSelf) {\n ngDevMode && assertTNodeForTView(tNode, lView[TVIEW]);\n\n let parentTNode = tNode as TNode | null;\n let parentLView = lView;\n\n while (true) {\n ngDevMode && assertDefined(parentTNode, 'Parent TNode should be defined');\n parentTNode = parentTNode!.parent as TNode | null;\n if (parentTNode === null && !(flags & InjectFlags.Host)) {\n parentTNode = getDeclarationTNode(parentLView);\n if (parentTNode === null) break;\n\n // 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 ngDevMode && assertDefined(parentLView, 'Parent LView should be defined');\n parentLView = parentLView[DECLARATION_VIEW]!;\n\n // 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 if (parentTNode.type & (TNodeType.Element | TNodeType.ElementContainer)) {\n break;\n }\n } else {\n break;\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 const lFrame = instructionState.lFrame = allocLFrame();\n lFrame.currentTNode = tNode;\n lFrame.lView = lView;\n\n return true;\n}\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 */\nexport function enterView(newView: LView): void {\n ngDevMode && assertNotEqual(newView[0], newView[1] as any, '????');\n ngDevMode && assertLViewOrUndefined(newView);\n const newLFrame = allocLFrame();\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 const 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/**\n * Allocates next free LFrame. This function tries to reuse the `LFrame`s to lower memory pressure.\n */\nfunction allocLFrame() {\n const currentLFrame = instructionState.lFrame;\n const childLFrame = currentLFrame === null ? null : currentLFrame.child;\n const newLFrame = childLFrame === null ? createLFrame(currentLFrame) : childLFrame;\n return newLFrame;\n}\n\nfunction createLFrame(parent: LFrame|null): LFrame {\n const lFrame: 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 return lFrame;\n}\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 */\nfunction leaveViewLight(): LFrame {\n const oldLFrame = instructionState.lFrame;\n instructionState.lFrame = oldLFrame.parent;\n oldLFrame.currentTNode = null!;\n oldLFrame.lView = null!;\n return oldLFrame;\n}\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 */\nexport const leaveDI: () => void = leaveViewLight;\n\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 */\nexport function leaveView() {\n const 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\nexport function nextContextImpl(level: number): T {\n const contextLView = instructionState.lFrame.contextLView =\n walkUpViews(level, instructionState.lFrame.contextLView!);\n return contextLView[CONTEXT] as T;\n}\n\nfunction walkUpViews(nestingLevel: number, currentView: LView): LView {\n while (nestingLevel > 0) {\n ngDevMode &&\n assertDefined(\n currentView[DECLARATION_VIEW],\n 'Declaration view should be defined if nesting level is greater than 0.');\n currentView = currentView[DECLARATION_VIEW]!;\n nestingLevel--;\n }\n return currentView;\n}\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 */\nexport function getSelectedIndex() {\n return instructionState.lFrame.selectedIndex;\n}\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 */\nexport function setSelectedIndex(index: number) {\n ngDevMode && index !== -1 &&\n assertGreaterThanOrEqual(index, HEADER_OFFSET, 'Index must be past HEADER_OFFSET (or -1).');\n ngDevMode &&\n assertLessThan(\n index, instructionState.lFrame.lView.length, 'Can\\'t set index passed end of LView');\n instructionState.lFrame.selectedIndex = index;\n}\n\n/**\n * Gets the `tNode` that represents currently selected element.\n */\nexport function getSelectedTNode() {\n const lFrame = instructionState.lFrame;\n return getTNode(lFrame.tView, lFrame.selectedIndex);\n}\n\n/**\n * Sets the namespace used to create elements to `'http://www.w3.org/2000/svg'` in global state.\n *\n * @codeGenApi\n */\nexport function ɵɵnamespaceSVG() {\n instructionState.lFrame.currentNamespace = SVG_NAMESPACE;\n}\n\n/**\n * Sets the namespace used to create elements to `'http://www.w3.org/1998/MathML/'` in global state.\n *\n * @codeGenApi\n */\nexport function ɵɵnamespaceMathML() {\n instructionState.lFrame.currentNamespace = MATH_ML_NAMESPACE;\n}\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 */\nexport function ɵɵnamespaceHTML() {\n namespaceHTMLInternal();\n}\n\n/**\n * Sets the namespace used to create elements to `null`, which forces element creation to use\n * `createElement` rather than `createElementNS`.\n */\nexport function namespaceHTMLInternal() {\n instructionState.lFrame.currentNamespace = null;\n}\n\nexport function getNamespace(): string|null {\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\nimport {AfterContentChecked, AfterContentInit, AfterViewChecked, AfterViewInit, DoCheck, OnChanges, OnDestroy, OnInit} from '../interface/lifecycle_hooks';\nimport {assertDefined, assertEqual, assertNotEqual} from '../util/assert';\nimport {assertFirstCreatePass} from './assert';\nimport {NgOnChangesFeatureImpl} from './features/ng_onchanges_feature';\nimport {DirectiveDef} from './interfaces/definition';\nimport {TNode} from './interfaces/node';\nimport {FLAGS, HookData, InitPhaseState, LView, LViewFlags, PREORDER_HOOK_FLAGS, PreOrderHookFlags, TView} from './interfaces/view';\nimport {isInCheckNoChangesMode} from './state';\n\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 */\nexport function registerPreOrderHooks(\n directiveIndex: number, directiveDef: DirectiveDef, tView: TView): void {\n ngDevMode && assertFirstCreatePass(tView);\n const {ngOnChanges, ngOnInit, ngDoCheck} =\n directiveDef.type.prototype as OnChanges & OnInit & DoCheck;\n\n if (ngOnChanges as Function | undefined) {\n const wrappedOnChanges = NgOnChangesFeatureImpl(directiveDef);\n (tView.preOrderHooks || (tView.preOrderHooks = [])).push(directiveIndex, wrappedOnChanges);\n (tView.preOrderCheckHooks || (tView.preOrderCheckHooks = []))\n .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 *\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 */\nexport function registerPostOrderHooks(tView: TView, tNode: TNode): void {\n ngDevMode && assertFirstCreatePass(tView);\n // 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 for (let i = tNode.directiveStart, end = tNode.directiveEnd; i < end; i++) {\n const directiveDef = tView.data[i] as DirectiveDef;\n ngDevMode && assertDefined(directiveDef, 'Expecting DirectiveDef');\n const lifecycleHooks: AfterContentInit&AfterContentChecked&AfterViewInit&AfterViewChecked&\n OnDestroy = directiveDef.type.prototype;\n const {\n ngAfterContentInit,\n ngAfterContentChecked,\n ngAfterViewInit,\n ngAfterViewChecked,\n ngOnDestroy\n } = lifecycleHooks;\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/**\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/**\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 */\nexport function executeCheckHooks(lView: LView, hooks: HookData, nodeIndex?: number|null) {\n callHooks(lView, hooks, InitPhaseState.InitPhaseCompleted, nodeIndex);\n}\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 */\nexport function executeInitAndCheckHooks(\n lView: LView, hooks: HookData, initPhase: InitPhaseState, nodeIndex?: number|null) {\n ngDevMode &&\n assertNotEqual(\n initPhase, InitPhaseState.InitPhaseCompleted,\n 'Init pre-order hooks should not be called more than once');\n if ((lView[FLAGS] & LViewFlags.InitPhaseStateMask) === initPhase) {\n callHooks(lView, hooks, initPhase, nodeIndex);\n }\n}\n\nexport function incrementInitPhaseFlags(lView: LView, initPhase: InitPhaseState): void {\n ngDevMode &&\n assertNotEqual(\n initPhase, InitPhaseState.InitPhaseCompleted,\n 'Init hooks phase should not be incremented after all init hooks have been run.');\n let flags = lView[FLAGS];\n if ((flags & LViewFlags.InitPhaseStateMask) === initPhase) {\n flags &= LViewFlags.IndexWithinInitPhaseReset;\n flags += LViewFlags.InitPhaseStateIncrementer;\n lView[FLAGS] = flags;\n }\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 */\nfunction callHooks(\n currentView: LView, arr: HookData, initPhase: InitPhaseState,\n currentNodeIndex: number|null|undefined): void {\n ngDevMode &&\n assertEqual(\n isInCheckNoChangesMode(), false,\n 'Hooks should never be run when in check no changes mode.');\n const startIndex = currentNodeIndex !== undefined ?\n (currentView[PREORDER_HOOK_FLAGS] & PreOrderHookFlags.IndexOfTheNextPreOrderHookMaskMask) :\n 0;\n const nodeIndexLimit = currentNodeIndex != null ? currentNodeIndex : -1;\n const max = arr.length - 1; // Stop the loop at length - 1, because we look for the hook at i + 1\n let lastNodeIndexFound = 0;\n for (let i = startIndex; i < max; i++) {\n const hook = arr[i + 1] as number | (() => void);\n if (typeof hook === 'number') {\n lastNodeIndexFound = arr[i] as number;\n if (currentNodeIndex != null && lastNodeIndexFound >= currentNodeIndex) {\n break;\n }\n } else {\n const isInitHook = arr[i] < 0;\n if (isInitHook)\n currentView[PREORDER_HOOK_FLAGS] += PreOrderHookFlags.NumberOfInitHooksCalledIncrementer;\n if (lastNodeIndexFound < nodeIndexLimit || nodeIndexLimit == -1) {\n callHook(currentView, initPhase, arr, i);\n currentView[PREORDER_HOOK_FLAGS] =\n (currentView[PREORDER_HOOK_FLAGS] & PreOrderHookFlags.NumberOfInitHooksCalledMask) + i +\n 2;\n }\n i++;\n }\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 */\nfunction callHook(currentView: LView, initPhase: InitPhaseState, arr: HookData, i: number) {\n const isInitHook = arr[i] < 0;\n const hook = arr[i + 1] as () => void;\n const directiveIndex = isInitHook ? -arr[i] : arr[i] as number;\n const directive = currentView[directiveIndex];\n if (isInitHook) {\n const indexWithintInitPhase = currentView[FLAGS] >> LViewFlags.IndexWithinInitPhaseShift;\n // The init phase state must be always checked here as it may have been recursively updated.\n if (indexWithintInitPhase <\n (currentView[PREORDER_HOOK_FLAGS] >> PreOrderHookFlags.NumberOfInitHooksCalledShift) &&\n (currentView[FLAGS] & LViewFlags.InitPhaseStateMask) === initPhase) {\n currentView[FLAGS] += LViewFlags.IndexWithinInitPhaseIncrementer;\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\nimport {InjectionToken} from '../../di/injection_token';\nimport {InjectFlags} from '../../di/interface/injector';\nimport {AbstractType, Type} from '../../interface/type';\nimport {assertDefined, assertEqual} from '../../util/assert';\n\nimport {TDirectiveHostNode} from './node';\nimport {LView, TData} from './view';\n\n/**\n * Offsets of the `NodeInjector` data structure in the expando.\n *\n * `NodeInjector` is stored in both `LView` as well as `TView.data`. All storage requires 9 words.\n * First 8 are reserved for bloom filter and the 9th is reserved for the associated `TNode` as well\n * as parent `NodeInjector` pointer. All indexes are starting with `index` and have an offset as\n * shown.\n *\n * `LView` layout:\n * ```\n * index + 0: cumulative bloom filter\n * index + 1: cumulative bloom filter\n * index + 2: cumulative bloom filter\n * index + 3: cumulative bloom filter\n * index + 4: cumulative bloom filter\n * index + 5: cumulative bloom filter\n * index + 6: cumulative bloom filter\n * index + 7: cumulative bloom filter\n * index + 8: cumulative bloom filter\n * index + PARENT: Index to the parent injector. See `RelativeInjectorLocation`\n * `const parent = lView[index + NodeInjectorOffset.PARENT]`\n * ```\n *\n * `TViewData` layout:\n * ```\n * index + 0: cumulative bloom filter\n * index + 1: cumulative bloom filter\n * index + 2: cumulative bloom filter\n * index + 3: cumulative bloom filter\n * index + 4: cumulative bloom filter\n * index + 5: cumulative bloom filter\n * index + 6: cumulative bloom filter\n * index + 7: cumulative bloom filter\n * index + 8: cumulative bloom filter\n * index + TNODE: TNode associated with this `NodeInjector`\n * `canst tNode = tView.data[index + NodeInjectorOffset.TNODE]`\n * ```\n */\nexport const enum NodeInjectorOffset {\n TNODE = 8,\n PARENT = 8,\n BLOOM_SIZE = 8,\n SIZE = 9,\n}\n\n/**\n * Represents a relative location of parent injector.\n *\n * The interfaces encodes number of parents `LView`s to traverse and index in the `LView`\n * pointing to the parent injector.\n */\nexport interface RelativeInjectorLocation {\n __brand__: 'RelativeInjectorLocationFlags';\n}\n\nexport const enum RelativeInjectorLocationFlags {\n InjectorIndexMask = 0b111111111111111,\n ViewOffsetShift = 16,\n NO_PARENT = -1,\n}\n\nexport const NO_PARENT_INJECTOR: RelativeInjectorLocation = -1 as any;\n\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 {\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 {\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 */\nexport class NodeInjectorFactory {\n /**\n * The inject implementation to be activated when using the factory.\n */\n injectImpl: null|\n ((token: Type|AbstractType|InjectionToken, flags?: InjectFlags) => T);\n\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 resolving = false;\n\n /**\n * Marks that the token can see other Tokens declared in `viewProviders` on the same node.\n */\n canSeeViewProviders: boolean;\n\n /**\n * An array of factories to use in case of `multi` provider.\n */\n multi?: Array<() => any>;\n\n /**\n * Number of `multi`-providers which belong to the component.\n *\n * This is needed because when multiple components and directives declare the `multi` provider\n * they have to be concatenated in the correct order.\n *\n * Example:\n *\n * If we have a component and directive active an a single element as declared here\n * ```\n * component:\n * provides: [ {provide: String, useValue: 'component', multi: true} ],\n * viewProvides: [ {provide: String, useValue: 'componentView', multi: true} ],\n *\n * directive:\n * provides: [ {provide: String, useValue: 'directive', multi: true} ],\n * ```\n *\n * Then the expected results are:\n *\n * ```\n * providers: ['component', 'directive']\n * viewProviders: ['component', 'componentView', 'directive']\n * ```\n *\n * The way to think about it is that the `viewProviders` have been inserted after the component\n * but before the directives, which is why we need to know how many `multi`s have been declared by\n * the component.\n */\n componentProviders?: number;\n\n /**\n * Current index of the Factory in the `data`. Needed for `viewProviders` and `providers` merging.\n * See `providerFactory`.\n */\n index?: number;\n\n /**\n * Because the same `multi` provider can be declared in `provides` and `viewProvides` it is\n * possible for `viewProvides` to shadow the `provides`. For this reason we store the\n * `provideFactory` of the `providers` so that `providers` can be extended with `viewProviders`.\n *\n * Example:\n *\n * Given:\n * ```\n * provides: [ {provide: String, useValue: 'all', multi: true} ],\n * viewProvides: [ {provide: String, useValue: 'viewOnly', multi: true} ],\n * ```\n *\n * We have to return `['all']` in case of content injection, but `['all', 'viewOnly']` in case\n * of view injection. We further have to make sure that the shared instances (in our case\n * `all`) are the exact same instance in both the content as well as the view injection. (We\n * have to make sure that we don't double instantiate.) For this reason the `viewProvides`\n * `Factory` has a pointer to the shadowed `provides` factory so that it can instantiate the\n * `providers` (`['all']`) and then extend it with `viewProviders` (`['all'] + ['viewOnly'] =\n * ['all', 'viewOnly']`).\n */\n providerFactory?: NodeInjectorFactory|null;\n\n\n constructor(\n /**\n * Factory to invoke in order to create a new instance.\n */\n public factory:\n (this: NodeInjectorFactory, _: undefined,\n /**\n * array where injectables tokens are stored. This is used in\n * case of an error reporting to produce friendlier errors.\n */\n tData: TData,\n /**\n * array where existing instances of injectables are stored. This is used in case\n * of multi shadow is needed. See `multi` field documentation.\n */\n lView: LView,\n /**\n * The TNode of the same element injector.\n */\n tNode: TDirectiveHostNode) => any,\n /**\n * Set to `true` if the token is declared in `viewProviders` (or if it is component).\n */\n isViewProvider: boolean,\n injectImplementation: null|\n ((token: Type|AbstractType|InjectionToken, flags?: InjectFlags) => T)) {\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}\n\nexport function isFactory(obj: any): obj is NodeInjectorFactory {\n return obj instanceof NodeInjectorFactory;\n}\n\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\nexport const 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 */\nimport {KeyValueArray} from '../../util/array_utils';\nimport {TStylingRange} from '../interfaces/styling';\nimport {TIcu} from './i18n';\nimport {CssSelector} from './projection';\nimport {RNode} from './renderer_dom';\nimport {LView, TView} from './view';\n\n\n/**\n * TNodeType corresponds to the {@link TNode} `type` property.\n *\n * NOTE: type IDs are such that we use each bit to denote a type. This is done so that we can easily\n * check if the `TNode` is of more than one type.\n *\n * `if (tNode.type === TNodeType.Text || tNode.type === TNode.Element)`\n * can be written as:\n * `if (tNode.type & (TNodeType.Text | TNodeType.Element))`\n *\n * However any given `TNode` can only be of one type.\n */\nexport const enum TNodeType {\n /**\n * The TNode contains information about a DOM element aka {@link RText}.\n */\n Text = 0b1,\n\n /**\n * The TNode contains information about a DOM element aka {@link RElement}.\n */\n Element = 0b10,\n\n /**\n * The TNode contains information about an {@link LContainer} for embedded views.\n */\n Container = 0b100,\n\n /**\n * The TNode contains information about an `` element {@link RNode}.\n */\n ElementContainer = 0b1000,\n\n /**\n * The TNode contains information about an `` projection\n */\n Projection = 0b10000,\n\n /**\n * The TNode contains information about an ICU comment used in `i18n`.\n */\n Icu = 0b100000,\n\n /**\n * Special node type representing a placeholder for future `TNode` at this location.\n *\n * I18n translation blocks are created before the element nodes which they contain. (I18n blocks\n * can span over many elements.) Because i18n `TNode`s (representing text) are created first they\n * often may need to point to element `TNode`s which are not yet created. In such a case we create\n * a `Placeholder` `TNode`. This allows the i18n to structurally link the `TNode`s together\n * without knowing any information about the future nodes which will be at that location.\n *\n * On `firstCreatePass` When element instruction executes it will try to create a `TNode` at that\n * location. Seeing a `Placeholder` `TNode` already there tells the system that it should reuse\n * existing `TNode` (rather than create a new one) and just update the missing information.\n */\n Placeholder = 0b1000000,\n\n // Combined Types These should never be used for `TNode.type` only as a useful way to check\n // if `TNode.type` is one of several choices.\n\n // See: https://github.com/microsoft/TypeScript/issues/35875 why we can't refer to existing enum.\n AnyRNode = 0b11, // Text | Element,\n AnyContainer = 0b1100, // Container | ElementContainer, // See:\n}\n\n/**\n * Converts `TNodeType` into human readable text.\n * Make sure this matches with `TNodeType`\n */\nexport function toTNodeTypeAsString(tNodeType: TNodeType): string {\n let text = '';\n (tNodeType & TNodeType.Text) && (text += '|Text');\n (tNodeType & TNodeType.Element) && (text += '|Element');\n (tNodeType & TNodeType.Container) && (text += '|Container');\n (tNodeType & TNodeType.ElementContainer) && (text += '|ElementContainer');\n (tNodeType & TNodeType.Projection) && (text += '|Projection');\n (tNodeType & TNodeType.Icu) && (text += '|IcuContainer');\n (tNodeType & TNodeType.Placeholder) && (text += '|Placeholder');\n return text.length > 0 ? text.substring(1) : text;\n}\n\n/**\n * Corresponds to the TNode.flags property.\n */\nexport const enum TNodeFlags {\n /** Bit #1 - This bit is set if the node is a host for any directive (including a component) */\n isDirectiveHost = 0x1,\n\n /**\n * Bit #2 - This bit is set if the node is a host for a component.\n *\n * Setting this bit implies that the `isDirectiveHost` bit is set as well.\n * */\n isComponentHost = 0x2,\n\n /** Bit #3 - This bit is set if the node has been projected */\n isProjected = 0x4,\n\n /** Bit #4 - This bit is set if any directive on this node has content queries */\n hasContentQuery = 0x8,\n\n /** Bit #5 - This bit is set if the node has any \"class\" inputs */\n hasClassInput = 0x10,\n\n /** Bit #6 - This bit is set if the node has any \"style\" inputs */\n hasStyleInput = 0x20,\n\n /** Bit #7 This bit is set if the node has been detached by i18n */\n isDetached = 0x40,\n\n /**\n * Bit #8 - This bit is set if the node has directives with host bindings.\n *\n * This flags allows us to guard host-binding logic and invoke it only on nodes\n * that actually have directives with host bindings.\n */\n hasHostBindings = 0x80,\n}\n\n/**\n * Corresponds to the TNode.providerIndexes property.\n */\nexport const enum TNodeProviderIndexes {\n /** The index of the first provider on this node is encoded on the least significant bits. */\n ProvidersStartIndexMask = 0b00000000000011111111111111111111,\n\n /**\n * The count of view providers from the component on this node is\n * encoded on the 20 most significant bits.\n */\n CptViewProvidersCountShift = 20,\n CptViewProvidersCountShifter = 0b00000000000100000000000000000000,\n}\n\n/**\n * A set of marker values to be used in the attributes arrays. These markers indicate that some\n * items are not regular attributes and the processing should be adapted accordingly.\n */\nexport const enum AttributeMarker {\n /**\n * An implicit marker which indicates that the value in the array are of `attributeKey`,\n * `attributeValue` format.\n *\n * NOTE: This is implicit as it is the type when no marker is present in array. We indicate that\n * it should not be present at runtime by the negative number.\n */\n ImplicitAttributes = -1,\n\n /**\n * Marker indicates that the following 3 values in the attributes array are:\n * namespaceUri, attributeName, attributeValue\n * in that order.\n */\n NamespaceURI = 0,\n\n /**\n * Signals class declaration.\n *\n * Each value following `Classes` designates a class name to include on the element.\n * ## Example:\n *\n * Given:\n * ```\n *
...\n * ```\n *\n * the generated code is:\n * ```\n * var _c1 = [AttributeMarker.Classes, 'foo', 'bar', 'baz'];\n * ```\n */\n Classes = 1,\n\n /**\n * Signals style declaration.\n *\n * Each pair of values following `Styles` designates a style name and value to include on the\n * element.\n * ## Example:\n *\n * Given:\n * ```\n *
...
\n * ```\n *\n * the generated code is:\n * ```\n * var _c1 = [AttributeMarker.Styles, 'width', '100px', 'height'. '200px', 'color', 'red'];\n * ```\n */\n Styles = 2,\n\n /**\n * Signals that the following attribute names were extracted from input or output bindings.\n *\n * For example, given the following HTML:\n *\n * ```\n *
\n * ```\n *\n * the generated code is:\n *\n * ```\n * var _c1 = ['moo', 'car', AttributeMarker.Bindings, 'foo', 'bar'];\n * ```\n */\n Bindings = 3,\n\n /**\n * Signals that the following attribute names were hoisted from an inline-template declaration.\n *\n * For example, given the following HTML:\n *\n * ```\n *
\n * ```\n *\n * the generated code for the `template()` instruction would include:\n *\n * ```\n * ['dirA', '', AttributeMarker.Bindings, 'dirB', AttributeMarker.Template, 'ngFor', 'ngForOf',\n * 'ngForTrackBy', 'let-value']\n * ```\n *\n * while the generated code for the `element()` instruction inside the template function would\n * include:\n *\n * ```\n * ['dirA', '', AttributeMarker.Bindings, 'dirB']\n * ```\n */\n Template = 4,\n\n /**\n * Signals that the following attribute is `ngProjectAs` and its value is a parsed\n * `CssSelector`.\n *\n * For example, given the following HTML:\n *\n * ```\n *

\n * ```\n *\n * the generated code for the `element()` instruction would include:\n *\n * ```\n * ['attr', 'value', AttributeMarker.ProjectAs, ['', 'title', '']]\n * ```\n */\n ProjectAs = 5,\n\n /**\n * Signals that the following attribute will be translated by runtime i18n\n *\n * For example, given the following HTML:\n *\n * ```\n *
\n * ```\n *\n * the generated code is:\n *\n * ```\n * var _c1 = ['moo', 'car', AttributeMarker.I18n, 'foo', 'bar'];\n */\n I18n = 6,\n}\n\n/**\n * A combination of:\n * - Attribute names and values.\n * - Special markers acting as flags to alter attributes processing.\n * - Parsed ngProjectAs selectors.\n */\nexport type TAttributes = (string|AttributeMarker|CssSelector)[];\n\n/**\n * Constants that are associated with a view. Includes:\n * - Attribute arrays.\n * - Local definition arrays.\n * - Translated messages (i18n).\n */\nexport type TConstants = (TAttributes|string)[];\n\n/**\n * Factory function that returns an array of consts. Consts can be represented as a function in\n * case any additional statements are required to define consts in the list. An example is i18n\n * where additional i18n calls are generated, which should be executed when consts are requested\n * for the first time.\n */\nexport type TConstantsFactory = () => TConstants;\n\n/**\n * TConstants type that describes how the `consts` field is generated on ComponentDef: it can be\n * either an array or a factory function that returns that array.\n */\nexport type TConstantsOrFactory = TConstants|TConstantsFactory;\n\n/**\n * Binding data (flyweight) for a particular node that is shared between all templates\n * of a specific type.\n *\n * If a property is:\n * - PropertyAliases: that property's data was generated and this is it\n * - Null: that property's data was already generated and nothing was found.\n * - Undefined: that property's data has not yet been generated\n *\n * see: https://en.wikipedia.org/wiki/Flyweight_pattern for more on the Flyweight pattern\n */\nexport interface TNode {\n /** The type of the TNode. See TNodeType. */\n type: TNodeType;\n\n /**\n * Index of the TNode in TView.data and corresponding native element in LView.\n *\n * This is necessary to get from any TNode to its corresponding native element when\n * traversing the node tree.\n *\n * If index is -1, this is a dynamically created container node or embedded view node.\n */\n index: number;\n\n /**\n * Insert before existing DOM node index.\n *\n * When DOM nodes are being inserted, normally they are being appended as they are created.\n * Under i18n case, the translated text nodes are created ahead of time as part of the\n * `ɵɵi18nStart` instruction which means that this `TNode` can't just be appended and instead\n * needs to be inserted using `insertBeforeIndex` semantics.\n *\n * Additionally sometimes it is necessary to insert new text nodes as a child of this `TNode`. In\n * such a case the value stores an array of text nodes to insert.\n *\n * Example:\n * ```\n *
\n * Hello World!\n *
\n * ```\n * In the above example the `ɵɵi18nStart` instruction can create `Hello `, `World` and `!` text\n * nodes. It can also insert `Hello ` and `!` text node as a child of `
`, but it can't\n * insert `World` because the `` node has not yet been created. In such a case the\n * `` `TNode` will have an array which will direct the `` to not only insert\n * itself in front of `!` but also to insert the `World` (created by `ɵɵi18nStart`) into\n * `` itself.\n *\n * Pseudo code:\n * ```\n * if (insertBeforeIndex === null) {\n * // append as normal\n * } else if (Array.isArray(insertBeforeIndex)) {\n * // First insert current `TNode` at correct location\n * const currentNode = lView[this.index];\n * parentNode.insertBefore(currentNode, lView[this.insertBeforeIndex[0]]);\n * // Now append all of the children\n * for(let i=1; i`\n * - a component is referenced, ex.: ``\n * - a directive is referenced, ex.: ``.\n *\n * A given element might have different local names and those names can be associated\n * with a directive. We store local names at even indexes while odd indexes are reserved\n * for directive index in a view (or `-1` if there is no associated directive).\n *\n * Some examples:\n * - `
` => `[\"foo\", -1]`\n * - `` => `[\"foo\", myCmptIdx]`\n * - `` => `[\"foo\", myCmptIdx, \"bar\", directiveIdx]`\n * - `
` => `[\"foo\", -1, \"bar\", directiveIdx]`\n */\n localNames: (string|number)[]|null;\n\n /** Information about input properties that need to be set once from attribute data. */\n initialInputs: InitialInputData|null|undefined;\n\n /**\n * Input data for all directives on this node. `null` means that there are no directives with\n * inputs on this node.\n */\n inputs: PropertyAliases|null;\n\n /**\n * Output data for all directives on this node. `null` means that there are no directives with\n * outputs on this node.\n */\n outputs: PropertyAliases|null;\n\n /**\n * The TView or TViews attached to this node.\n *\n * If this TNode corresponds to an LContainer with inline views, the container will\n * need to store separate static data for each of its view blocks (TView[]). Otherwise,\n * nodes in inline views with the same index as nodes in their parent views will overwrite\n * each other, as they are in the same template.\n *\n * Each index in this array corresponds to the static data for a certain\n * view. So if you had V(0) and V(1) in a container, you might have:\n *\n * [\n * [{tagName: 'div', attrs: ...}, null], // V(0) TView\n * [{tagName: 'button', attrs ...}, null] // V(1) TView\n *\n * If this TNode corresponds to an LContainer with a template (e.g. structural\n * directive), the template's TView will be stored here.\n *\n * If this TNode corresponds to an element, tViews will be null .\n */\n tViews: TView|TView[]|null;\n\n /**\n * The next sibling node. Necessary so we can propagate through the root nodes of a view\n * to insert them or remove them from the DOM.\n */\n next: TNode|null;\n\n /**\n * The next projected sibling. Since in Angular content projection works on the node-by-node\n * basis the act of projecting nodes might change nodes relationship at the insertion point\n * (target view). At the same time we need to keep initial relationship between nodes as\n * expressed in content view.\n */\n projectionNext: TNode|null;\n\n /**\n * First child of the current node.\n *\n * For component nodes, the child will always be a ContentChild (in same view).\n * For embedded view nodes, the child will be in their child view.\n */\n child: TNode|null;\n\n /**\n * Parent node (in the same view only).\n *\n * We need a reference to a node's parent so we can append the node to its parent's native\n * element at the appropriate time.\n *\n * If the parent would be in a different view (e.g. component host), this property will be null.\n * It's important that we don't try to cross component boundaries when retrieving the parent\n * because the parent will change (e.g. index, attrs) depending on where the component was\n * used (and thus shouldn't be stored on TNode). In these cases, we retrieve the parent through\n * LView.node instead (which will be instance-specific).\n *\n * If this is an inline view node (V), the parent will be its container.\n */\n parent: TElementNode|TContainerNode|null;\n\n /**\n * List of projected TNodes for a given component host element OR index into the said nodes.\n *\n * For easier discussion assume this example:\n * ``'s view definition:\n * ```\n * content1\n * content2\n * ```\n * ``'s view definition:\n * ```\n * \n * ```\n *\n * If `Array.isArray(projection)` then `TNode` is a host element:\n * - `projection` stores the content nodes which are to be projected.\n * - The nodes represent categories defined by the selector: For example:\n * `` would represent the heads for ``\n * and `` respectively.\n * - The nodes we store in `projection` are heads only, we used `.next` to get their\n * siblings.\n * - The nodes `.next` is sorted/rewritten as part of the projection setup.\n * - `projection` size is equal to the number of projections ``. The size of\n * `c1` will be `1` because `` has only one ``.\n * - we store `projection` with the host (`c1`, `c2`) rather than the `` (`cont1`)\n * because the same component (``) can be used in multiple locations (`c1`, `c2`) and\n * as a result have different set of nodes to project.\n * - without `projection` it would be difficult to efficiently traverse nodes to be projected.\n *\n * If `typeof projection == 'number'` then `TNode` is a `` element:\n * - `projection` is an index of the host's `projection`Nodes.\n * - This would return the first head node to project:\n * `getHost(currentTNode).projection[currentTNode.projection]`.\n * - When projecting nodes the parent node retrieved may be a `` node, in which case\n * the process is recursive in nature.\n *\n * If `projection` is of type `RNode[][]` than we have a collection of native nodes passed as\n * projectable nodes during dynamic component creation.\n */\n projection: (TNode|RNode[])[]|number|null;\n\n /**\n * A collection of all `style` static values for an element (including from host).\n *\n * This field will be populated if and when:\n *\n * - There are one or more initial `style`s on an element (e.g. `
`)\n * - There are one or more initial `style`s on a directive/component host\n * (e.g. `@Directive({host: {style: \"width:200px;\" } }`)\n */\n styles: string|null;\n\n\n /**\n * A collection of all `style` static values for an element excluding host sources.\n *\n * Populated when there are one or more initial `style`s on an element\n * (e.g. `
`)\n * Must be stored separately from `tNode.styles` to facilitate setting directive\n * inputs that shadow the `style` property. If we used `tNode.styles` as is for shadowed inputs,\n * we would feed host styles back into directives as \"inputs\". If we used `tNode.attrs`, we\n * would have to concatenate the attributes on every template pass. Instead, we process once on\n * first create pass and store here.\n */\n stylesWithoutHost: string|null;\n\n /**\n * A `KeyValueArray` version of residual `styles`.\n *\n * When there are styling instructions than each instruction stores the static styling\n * which is of lower priority than itself. This means that there may be a higher priority\n * styling than the instruction.\n *\n * Imagine:\n * ```\n *
\n *\n * @Directive({\n * host: {\n * style: 'color: lowest; ',\n * '[styles.color]': 'exp' // ɵɵstyleProp('color', ctx.exp);\n * }\n * })\n * ```\n *\n * In the above case:\n * - `color: lowest` is stored with `ɵɵstyleProp('color', ctx.exp);` instruction\n * - `color: highest` is the residual and is stored here.\n *\n * - `undefined': not initialized.\n * - `null`: initialized but `styles` is `null`\n * - `KeyValueArray`: parsed version of `styles`.\n */\n residualStyles: KeyValueArray|undefined|null;\n\n /**\n * A collection of all class static values for an element (including from host).\n *\n * This field will be populated if and when:\n *\n * - There are one or more initial classes on an element (e.g. `
`)\n * - There are one or more initial classes on an directive/component host\n * (e.g. `@Directive({host: {class: \"SOME_CLASS\" } }`)\n */\n classes: string|null;\n\n /**\n * A collection of all class static values for an element excluding host sources.\n *\n * Populated when there are one or more initial classes on an element\n * (e.g. `
`)\n * Must be stored separately from `tNode.classes` to facilitate setting directive\n * inputs that shadow the `class` property. If we used `tNode.classes` as is for shadowed\n * inputs, we would feed host classes back into directives as \"inputs\". If we used\n * `tNode.attrs`, we would have to concatenate the attributes on every template pass. Instead,\n * we process once on first create pass and store here.\n */\n classesWithoutHost: string|null;\n\n /**\n * A `KeyValueArray` version of residual `classes`.\n *\n * Same as `TNode.residualStyles` but for classes.\n *\n * - `undefined': not initialized.\n * - `null`: initialized but `classes` is `null`\n * - `KeyValueArray`: parsed version of `classes`.\n */\n residualClasses: KeyValueArray|undefined|null;\n\n /**\n * Stores the head/tail index of the class bindings.\n *\n * - If no bindings, the head and tail will both be 0.\n * - If there are template bindings, stores the head/tail of the class bindings in the template.\n * - If no template bindings but there are host bindings, the head value will point to the last\n * host binding for \"class\" (not the head of the linked list), tail will be 0.\n *\n * See: `style_binding_list.ts` for details.\n *\n * This is used by `insertTStylingBinding` to know where the next styling binding should be\n * inserted so that they can be sorted in priority order.\n */\n classBindings: TStylingRange;\n\n /**\n * Stores the head/tail index of the class bindings.\n *\n * - If no bindings, the head and tail will both be 0.\n * - If there are template bindings, stores the head/tail of the style bindings in the template.\n * - If no template bindings but there are host bindings, the head value will point to the last\n * host binding for \"style\" (not the head of the linked list), tail will be 0.\n *\n * See: `style_binding_list.ts` for details.\n *\n * This is used by `insertTStylingBinding` to know where the next styling binding should be\n * inserted so that they can be sorted in priority order.\n */\n styleBindings: TStylingRange;\n}\n\n/**\n * See `TNode.insertBeforeIndex`\n */\nexport type InsertBeforeIndex = null|number|number[];\n\n/** Static data for an element */\nexport interface TElementNode extends TNode {\n /** Index in the data[] array */\n index: number;\n child: TElementNode|TTextNode|TElementContainerNode|TContainerNode|TProjectionNode|null;\n /**\n * Element nodes will have parents unless they are the first node of a component or\n * embedded view (which means their parent is in a different view and must be\n * retrieved using viewData[HOST_NODE]).\n */\n parent: TElementNode|TElementContainerNode|null;\n tViews: null;\n\n /**\n * If this is a component TNode with projection, this will be an array of projected\n * TNodes or native nodes (see TNode.projection for more info). If it's a regular element node\n * or a component without projection, it will be null.\n */\n projection: (TNode|RNode[])[]|null;\n\n /**\n * Stores TagName\n */\n value: string;\n}\n\n/** Static data for a text node */\nexport interface TTextNode extends TNode {\n /** Index in the data[] array */\n index: number;\n child: null;\n /**\n * Text nodes will have parents unless they are the first node of a component or\n * embedded view (which means their parent is in a different view and must be\n * retrieved using LView.node).\n */\n parent: TElementNode|TElementContainerNode|null;\n tViews: null;\n projection: null;\n}\n\n/** Static data for an LContainer */\nexport interface TContainerNode extends TNode {\n /**\n * Index in the data[] array.\n *\n * If it's -1, this is a dynamically created container node that isn't stored in\n * data[] (e.g. when you inject ViewContainerRef) .\n */\n index: number;\n child: null;\n\n /**\n * Container nodes will have parents unless:\n *\n * - They are the first node of a component or embedded view\n * - They are dynamically created\n */\n parent: TElementNode|TElementContainerNode|null;\n tViews: TView|TView[]|null;\n projection: null;\n value: null;\n}\n\n/** Static data for an */\nexport interface TElementContainerNode extends TNode {\n /** Index in the LView[] array. */\n index: number;\n child: TElementNode|TTextNode|TContainerNode|TElementContainerNode|TProjectionNode|null;\n parent: TElementNode|TElementContainerNode|null;\n tViews: null;\n projection: null;\n}\n\n/** Static data for an ICU expression */\nexport interface TIcuContainerNode extends TNode {\n /** Index in the LView[] array. */\n index: number;\n child: null;\n parent: TElementNode|TElementContainerNode|null;\n tViews: null;\n projection: null;\n value: TIcu;\n}\n\n/** Static data for an LProjectionNode */\nexport interface TProjectionNode extends TNode {\n /** Index in the data[] array */\n child: null;\n /**\n * Projection nodes will have parents unless they are the first node of a component\n * or embedded view (which means their parent is in a different view and must be\n * retrieved using LView.node).\n */\n parent: TElementNode|TElementContainerNode|null;\n tViews: null;\n\n /** Index of the projection node. (See TNode.projection for more info.) */\n projection: number;\n value: null;\n}\n\n/**\n * A union type representing all TNode types that can host a directive.\n */\nexport type TDirectiveHostNode = TElementNode|TContainerNode|TElementContainerNode;\n\n/**\n * This mapping is necessary so we can set input properties and output listeners\n * properly at runtime when property names are minified or aliased.\n *\n * Key: unminified / public input or output name\n * Value: array containing minified / internal name and related directive index\n *\n * The value must be an array to support inputs and outputs with the same name\n * on the same node.\n */\nexport type PropertyAliases = {\n // This uses an object map because using the Map type would be too slow\n [key: string]: PropertyAliasValue\n};\n\n/**\n * Store the runtime input or output names for all the directives.\n *\n * i+0: directive instance index\n * i+1: privateName\n *\n * e.g. [0, 'change-minified']\n */\nexport type PropertyAliasValue = (number|string)[];\n\n/**\n * This array contains information about input properties that\n * need to be set once from attribute data. It's ordered by\n * directive index (relative to element) so it's simple to\n * look up a specific directive's initial input data.\n *\n * Within each sub-array:\n *\n * i+0: attribute name\n * i+1: minified/internal input name\n * i+2: initial value\n *\n * If a directive on a node does not have any input properties\n * that should be set from attributes, its index is set to null\n * to avoid a sparse array.\n *\n * e.g. [null, ['role-min', 'minified-input', 'button']]\n */\nexport type InitialInputData = (InitialInputs|null)[];\n\n/**\n * Used by InitialInputData to store input properties\n * that should be set once from attributes.\n *\n * i+0: attribute name\n * i+1: minified/internal input name\n * i+2: initial value\n *\n * e.g. ['role-min', 'minified-input', 'button']\n */\nexport type InitialInputs = string[];\n\n// Note: This hack is necessary so we don't erroneously get a circular dependency\n// failure based on types.\nexport const unusedValueExportToPlacateAjd = 1;\n\n/**\n * Type representing a set of TNodes that can have local refs (`#foo`) placed on them.\n */\nexport type TNodeWithLocalRefs = TContainerNode|TElementNode|TElementContainerNode;\n\n/**\n * Type for a function that extracts a value for a local refs.\n * Example:\n * - `
` - `nativeDivEl` should point to the native `
` element;\n * - `` - `tplRef` should point to the `TemplateRef` instance;\n */\nexport type LocalRefExtractor = (tNode: TNodeWithLocalRefs, currentView: LView) => any;\n\n/**\n * Returns `true` if the `TNode` has a directive which has `@Input()` for `class` binding.\n *\n * ```\n *
\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 */\nexport function hasClassInput(tNode: TNode) {\n return (tNode.flags & TNodeFlags.hasClassInput) !== 0;\n}\n\n/**\n * Returns `true` if the `TNode` has a directive which has `@Input()` for `style` binding.\n *\n * ```\n *
\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 */\nexport function hasStyleInput(tNode: TNode) {\n return (tNode.flags & TNodeFlags.hasStyleInput) !== 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\nimport {assertDefined, throwError} from '../util/assert';\nimport {TNode, TNodeType, toTNodeTypeAsString} from './interfaces/node';\n\nexport function assertTNodeType(\n tNode: TNode|null, expectedTypes: TNodeType, message?: string): void {\n assertDefined(tNode, 'should be called with a TNode');\n if ((tNode.type & expectedTypes) === 0) {\n throwError(\n message ||\n `Expected [${toTNodeTypeAsString(expectedTypes)}] but got ${\n toTNodeTypeAsString(tNode.type)}.`);\n }\n}\n\nexport function assertPureTNodeType(type: TNodeType) {\n if (!(type === TNodeType.Element || //\n type === TNodeType.Text || //\n type === TNodeType.Container || //\n type === TNodeType.ElementContainer || //\n type === TNodeType.Icu || //\n type === TNodeType.Projection || //\n type === TNodeType.Placeholder)) {\n throwError(`Expected TNodeType to have only a single type selected, but got ${\n toTNodeTypeAsString(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 */\nimport {CharCode} from '../../util/char_code';\nimport {AttributeMarker, TAttributes} from '../interfaces/node';\nimport {CssSelector} from '../interfaces/projection';\nimport {isProceduralRenderer, ProceduralRenderer3, Renderer3} from '../interfaces/renderer';\nimport {RElement} from '../interfaces/renderer_dom';\n\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 */\nexport function setUpAttributes(renderer: Renderer3, native: RElement, attrs: TAttributes): number {\n const isProc = isProceduralRenderer(renderer);\n\n let i = 0;\n while (i < attrs.length) {\n const value = attrs[i];\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 !== AttributeMarker.NamespaceURI) {\n break;\n }\n\n // we just landed on the marker value ... therefore\n // we should skip to the next entry\n i++;\n\n const namespaceURI = attrs[i++] as string;\n const attrName = attrs[i++] as string;\n const attrVal = attrs[i++] as string;\n ngDevMode && ngDevMode.rendererSetAttribute++;\n isProc ?\n (renderer as ProceduralRenderer3).setAttribute(native, attrName, attrVal, namespaceURI) :\n native.setAttributeNS(namespaceURI, attrName, attrVal);\n } else {\n // attrName is string;\n const attrName = value as string;\n const attrVal = attrs[++i];\n // Standard attributes\n ngDevMode && ngDevMode.rendererSetAttribute++;\n if (isAnimationProp(attrName)) {\n if (isProc) {\n (renderer as ProceduralRenderer3).setProperty(native, attrName, attrVal);\n }\n } else {\n isProc ?\n (renderer as ProceduralRenderer3).setAttribute(native, attrName, attrVal as string) :\n native.setAttribute(attrName, attrVal as string);\n }\n i++;\n }\n }\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 return i;\n}\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 */\nexport function isNameOnlyAttributeMarker(marker: string|AttributeMarker|CssSelector) {\n return marker === AttributeMarker.Bindings || marker === AttributeMarker.Template ||\n marker === AttributeMarker.I18n;\n}\n\nexport function isAnimationProp(name: string): boolean {\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) === CharCode.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 */\nexport function mergeHostAttrs(dst: TAttributes|null, src: TAttributes|null): TAttributes|null {\n if (src === null || src.length === 0) {\n // 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 let srcMarker: AttributeMarker = AttributeMarker.ImplicitAttributes;\n for (let i = 0; i < src.length; i++) {\n const item = src[i];\n if (typeof item === 'number') {\n srcMarker = item;\n } else {\n if (srcMarker === AttributeMarker.NamespaceURI) {\n // Case where we need to consume `key1`, `key2`, `value` items.\n } else if (\n srcMarker === AttributeMarker.ImplicitAttributes ||\n srcMarker === AttributeMarker.Styles) {\n // Case where we have to consume `key1` and `value` only.\n mergeHostAttribute(dst, srcMarker, item as string, null, src[++i] as string);\n } else {\n // Case where we have to consume `key1` only.\n mergeHostAttribute(dst, srcMarker, item as string, null, null);\n }\n }\n }\n }\n return dst;\n}\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 */\nexport function mergeHostAttribute(\n dst: TAttributes, marker: AttributeMarker, key1: string, key2: string|null,\n value: string|null): void {\n let i = 0;\n // Assume that new markers will be inserted at the end.\n let markerInsertPosition = dst.length;\n // scan until correct type.\n if (marker === AttributeMarker.ImplicitAttributes) {\n markerInsertPosition = -1;\n } else {\n while (i < dst.length) {\n const dstValue = dst[i++];\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 }\n\n // search until you find place of insertion\n while (i < dst.length) {\n const item = dst[i];\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 return;\n } else if (key2 === dst[i + 1]) {\n dst[i + 2] = value!;\n return;\n }\n }\n // Increment counter.\n i++;\n if (key2 !== null) i++;\n if (value !== null) i++;\n }\n\n // insert at location.\n if (markerInsertPosition !== -1) {\n dst.splice(markerInsertPosition, 0, marker);\n i = markerInsertPosition + 1;\n }\n dst.splice(i++, 0, key1);\n if (key2 !== null) {\n dst.splice(i++, 0, key2);\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\nimport {assertGreaterThan, assertNotEqual, assertNumber} from '../../util/assert';\nimport {NO_PARENT_INJECTOR, RelativeInjectorLocation, RelativeInjectorLocationFlags} from '../interfaces/injector';\nimport {DECLARATION_VIEW, HEADER_OFFSET, LView} from '../interfaces/view';\n\n\n/// Parent Injector Utils ///////////////////////////////////////////////////////////////\nexport function hasParentInjector(parentLocation: RelativeInjectorLocation): boolean {\n return parentLocation !== NO_PARENT_INJECTOR;\n}\n\nexport function getParentInjectorIndex(parentLocation: RelativeInjectorLocation): number {\n ngDevMode && assertNumber(parentLocation, 'Number expected');\n ngDevMode && assertNotEqual(parentLocation as any, -1, 'Not a valid state.');\n const parentInjectorIndex =\n (parentLocation as any as number) & RelativeInjectorLocationFlags.InjectorIndexMask;\n ngDevMode &&\n assertGreaterThan(\n parentInjectorIndex, HEADER_OFFSET,\n 'Parent injector must be pointing past HEADER_OFFSET.');\n return (parentLocation as any as number) & RelativeInjectorLocationFlags.InjectorIndexMask;\n}\n\nexport function getParentInjectorViewOffset(parentLocation: RelativeInjectorLocation): number {\n return (parentLocation as any as number) >> RelativeInjectorLocationFlags.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 */\nexport function getParentInjectorView(location: RelativeInjectorLocation, startView: LView): LView {\n let viewOffset = getParentInjectorViewOffset(location);\n let parentView = startView;\n // 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 // tags or inline views, where the parent injector might live many views\n // above the child injector.\n while (viewOffset > 0) {\n parentView = parentView[DECLARATION_VIEW]!;\n viewOffset--;\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\nimport {isForwardRef, resolveForwardRef} from '../di/forward_ref';\nimport {injectRootLimpMode, setInjectImplementation} from '../di/inject_switch';\nimport {InjectionToken} from '../di/injection_token';\nimport {Injector} from '../di/injector';\nimport {InjectorMarkers} from '../di/injector_marker';\nimport {getInjectorDef} from '../di/interface/defs';\nimport {InjectFlags} from '../di/interface/injector';\nimport {AbstractType, Type} from '../interface/type';\nimport {assertDefined, assertEqual, assertIndexInRange} from '../util/assert';\nimport {noSideEffects} from '../util/closure';\n\nimport {assertDirectiveDef, assertNodeInjector, assertTNodeForLView} from './assert';\nimport {FactoryFn, getFactoryDef} from './definition_factory';\nimport {throwCyclicDependencyError, throwProviderNotFoundError} from './errors_di';\nimport {NG_ELEMENT_ID, NG_FACTORY_DEF} from './fields';\nimport {registerPreOrderHooks} from './hooks';\nimport {DirectiveDef} from './interfaces/definition';\nimport {isFactory, NO_PARENT_INJECTOR, NodeInjectorFactory, NodeInjectorOffset, RelativeInjectorLocation, RelativeInjectorLocationFlags} from './interfaces/injector';\nimport {AttributeMarker, TContainerNode, TDirectiveHostNode, TElementContainerNode, TElementNode, TNode, TNodeProviderIndexes, TNodeType} from './interfaces/node';\nimport {isComponentDef, isComponentHost} from './interfaces/type_checks';\nimport {DECLARATION_COMPONENT_VIEW, DECLARATION_VIEW, INJECTOR, LView, T_HOST, TData, TVIEW, TView, TViewType} from './interfaces/view';\nimport {assertTNodeType} from './node_assert';\nimport {enterDI, getCurrentTNode, getLView, leaveDI} from './state';\nimport {isNameOnlyAttributeMarker} from './util/attrs_utils';\nimport {getParentInjectorIndex, getParentInjectorView, hasParentInjector} from './util/injector_utils';\nimport {stringifyForError} from './util/stringify_utils';\n\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 */\nlet includeViewProviders = true;\n\nexport function setIncludeViewProviders(v: boolean): boolean {\n const oldValue = includeViewProviders;\n includeViewProviders = v;\n return oldValue;\n}\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 */\nconst BLOOM_SIZE = 256;\nconst BLOOM_MASK = BLOOM_SIZE - 1;\n\n/**\n * The number of bits that is represented by a single bloom bucket. JS bit operations are 32 bits,\n * so each bucket represents 32 distinct tokens which accounts for log2(32) = 5 bits of a bloom hash\n * number.\n */\nconst BLOOM_BUCKET_BITS = 5;\n\n/** Counter used to generate unique IDs for directives. */\nlet nextNgElementId = 0;\n\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 */\nexport function bloomAdd(\n injectorIndex: number, tView: TView, type: Type|InjectionToken|string): void {\n ngDevMode && assertEqual(tView.firstCreatePass, true, 'expected firstCreatePass to be true');\n let id: number|undefined;\n if (typeof type === 'string') {\n id = type.charCodeAt(0) || 0;\n } else if (type.hasOwnProperty(NG_ELEMENT_ID)) {\n id = (type as any)[NG_ELEMENT_ID];\n }\n\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 if (id == null) {\n id = (type as any)[NG_ELEMENT_ID] = nextNgElementId++;\n }\n\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 const bloomHash = id & BLOOM_MASK;\n\n // 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 const mask = 1 << bloomHash;\n\n // Each bloom bucket in `tData` represents `BLOOM_BUCKET_BITS` number of bits of `bloomHash`.\n // Any bits in `bloomHash` beyond `BLOOM_BUCKET_BITS` indicate the bucket offset that the mask\n // should be written to.\n (tView.data as number[])[injectorIndex + (bloomHash >> BLOOM_BUCKET_BITS)] |= 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 */\nexport function getOrCreateNodeInjectorForNode(\n tNode: TElementNode|TContainerNode|TElementContainerNode, lView: LView): number {\n const existingInjectorIndex = getInjectorIndex(tNode, lView);\n if (existingInjectorIndex !== -1) {\n return existingInjectorIndex;\n }\n\n const tView = lView[TVIEW];\n if (tView.firstCreatePass) {\n tNode.injectorIndex = lView.length;\n insertBloom(tView.data, tNode); // foundation for node bloom\n insertBloom(lView, null); // foundation for cumulative bloom\n insertBloom(tView.blueprint, null);\n }\n\n const parentLoc = getParentInjectorLocation(tNode, lView);\n const injectorIndex = tNode.injectorIndex;\n\n // 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 if (hasParentInjector(parentLoc)) {\n const parentIndex = getParentInjectorIndex(parentLoc);\n const parentLView = getParentInjectorView(parentLoc, lView);\n const parentData = parentLView[TVIEW].data as any;\n // 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 for (let i = 0; i < NodeInjectorOffset.BLOOM_SIZE; i++) {\n lView[injectorIndex + i] = parentLView[parentIndex + i] | parentData[parentIndex + i];\n }\n }\n\n lView[injectorIndex + NodeInjectorOffset.PARENT] = parentLoc;\n return injectorIndex;\n}\n\nfunction insertBloom(arr: any[], footer: TNode|null): void {\n arr.push(0, 0, 0, 0, 0, 0, 0, 0, footer);\n}\n\n\nexport function getInjectorIndex(tNode: TNode, lView: LView): number {\n if (tNode.injectorIndex === -1 ||\n // 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) ||\n // 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 + NodeInjectorOffset.PARENT] === null) {\n return -1;\n } else {\n ngDevMode && assertIndexInRange(lView, tNode.injectorIndex);\n return tNode.injectorIndex;\n }\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 */\nexport function getParentInjectorLocation(tNode: TNode, lView: LView): RelativeInjectorLocation {\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 as any; // ViewOffset is 0\n }\n\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 let declarationViewOffset = 0;\n let parentTNode: TNode|null = null;\n let lViewCursor: LView|null = lView;\n\n // 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 while (lViewCursor !== null) {\n // First determine the `parentTNode` location. The parent pointer differs based on `TView.type`.\n const tView = lViewCursor[TVIEW];\n const tViewType = tView.type;\n if (tViewType === TViewType.Embedded) {\n ngDevMode &&\n assertDefined(tView.declTNode, 'Embedded TNodes should have declaration parents.');\n parentTNode = tView.declTNode;\n } else if (tViewType === TViewType.Component) {\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, TViewType.Root, 'Root type expected');\n parentTNode = null;\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]!);\n // Every iteration of the loop requires that we go to the declared parent.\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 |\n (declarationViewOffset << RelativeInjectorLocationFlags.ViewOffsetShift)) as any;\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 */\nexport function diPublicInInjector(\n injectorIndex: number, tView: TView, token: InjectionToken|Type): void {\n bloomAdd(injectorIndex, tView, token);\n}\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 * \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 */\nexport function injectAttributeImpl(tNode: TNode, attrNameToInject: string): string|null {\n ngDevMode && assertTNodeType(tNode, TNodeType.AnyContainer | TNodeType.AnyRNode);\n ngDevMode && assertDefined(tNode, 'expecting tNode');\n if (attrNameToInject === 'class') {\n return tNode.classes;\n }\n if (attrNameToInject === 'style') {\n return tNode.styles;\n }\n\n const attrs = tNode.attrs;\n if (attrs) {\n const attrsLength = attrs.length;\n let i = 0;\n while (i < attrsLength) {\n const value = attrs[i];\n\n // If we hit a `Bindings` or `Template` marker then we are done.\n if (isNameOnlyAttributeMarker(value)) break;\n\n // Skip namespaced attributes\n if (value === AttributeMarker.NamespaceURI) {\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 while (i < attrsLength && typeof attrs[i] === 'string') {\n i++;\n }\n } else if (value === attrNameToInject) {\n return attrs[i + 1] as string;\n } else {\n i = i + 2;\n }\n }\n }\n return null;\n}\n\n\nfunction notFoundValueOrThrow(\n notFoundValue: T|null, token: Type|AbstractType|InjectionToken, flags: InjectFlags): T|\n null {\n if (flags & InjectFlags.Optional) {\n return notFoundValue;\n } else {\n throwProviderNotFoundError(token, 'NodeInjector');\n }\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 */\nfunction lookupTokenUsingModuleInjector(\n lView: LView, token: Type|AbstractType|InjectionToken, flags: InjectFlags,\n notFoundValue?: any): T|null {\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 const moduleInjector = lView[INJECTOR];\n // 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 const previousInjectImplementation = setInjectImplementation(undefined);\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 return notFoundValueOrThrow(notFoundValue, token, flags);\n}\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 */\nexport function getOrCreateInjectable(\n tNode: TDirectiveHostNode|null, lView: LView, token: Type|AbstractType|InjectionToken,\n flags: InjectFlags = InjectFlags.Default, notFoundValue?: any): T|null {\n if (tNode !== null) {\n const bloomHash = bloomHashBitOrFactory(token);\n // 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 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) ?\n notFoundValueOrThrow(notFoundValue, token, flags) :\n lookupTokenUsingModuleInjector(lView, token, flags, notFoundValue);\n }\n try {\n const value = bloomHash();\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 let previousTView: TView|null = null;\n let injectorIndex = getInjectorIndex(tNode, lView);\n let parentLocation: RelativeInjectorLocation = NO_PARENT_INJECTOR;\n let hostTElementNode: TNode|null =\n flags & InjectFlags.Host ? lView[DECLARATION_COMPONENT_VIEW][T_HOST] : null;\n\n // If we should skip this injector, or if there is no injector on this node, start by\n // searching the parent injector.\n if (injectorIndex === -1 || flags & InjectFlags.SkipSelf) {\n parentLocation = injectorIndex === -1 ? getParentInjectorLocation(tNode, lView) :\n lView[injectorIndex + NodeInjectorOffset.PARENT];\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 }\n\n // Traverse up the injector tree until we find a potential match or until we know there\n // *isn't* a match.\n while (injectorIndex !== -1) {\n ngDevMode && assertNodeInjector(lView, injectorIndex);\n\n // Check the current injector. If it matches, see if it contains token.\n const tView = lView[TVIEW];\n ngDevMode &&\n assertTNodeForLView(\n tView.data[injectorIndex + NodeInjectorOffset.TNODE] as TNode, lView);\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 const instance: T|null = searchTokensOnInjector(\n injectorIndex, lView, token, previousTView, flags, hostTElementNode);\n if (instance !== NOT_FOUND) {\n return instance;\n }\n }\n parentLocation = lView[injectorIndex + NodeInjectorOffset.PARENT];\n if (parentLocation !== NO_PARENT_INJECTOR &&\n shouldSearchParent(\n flags,\n lView[TVIEW].data[injectorIndex + NodeInjectorOffset.TNODE] === hostTElementNode) &&\n 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\nconst NOT_FOUND = {};\n\nexport function createNodeInjector(): Injector {\n return new NodeInjector(getCurrentTNode()! as TDirectiveHostNode, getLView()) as any;\n}\n\nfunction searchTokensOnInjector(\n injectorIndex: number, lView: LView, token: Type|AbstractType|InjectionToken,\n previousTView: TView|null, flags: InjectFlags, hostTElementNode: TNode|null) {\n const currentTView = lView[TVIEW];\n const tNode = currentTView.data[injectorIndex + NodeInjectorOffset.TNODE] as TNode;\n // First, we need to determine if view providers can be accessed by the starting element.\n // There are two possibilities\n const canAccessViewProviders = previousTView == null ?\n // 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) :\n // 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 & TNodeType.AnyRNode) !== 0));\n\n // This special case happens when there is a @host on the inject and when we are searching\n // on the host element node.\n const isHostSpecialCase = (flags & InjectFlags.Host) && hostTElementNode === tNode;\n\n const injectableIdx = locateDirectiveOrProvider(\n tNode, currentTView, token, canAccessViewProviders, isHostSpecialCase);\n if (injectableIdx !== null) {\n return getNodeInjectable(lView, currentTView, injectableIdx, tNode as TElementNode);\n } else {\n return NOT_FOUND;\n }\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 */\nexport function locateDirectiveOrProvider(\n tNode: TNode, tView: TView, token: Type|AbstractType|InjectionToken|string,\n canAccessViewProviders: boolean, isHostSpecialCase: boolean|number): number|null {\n const nodeProviderIndexes = tNode.providerIndexes;\n const tInjectables = tView.data;\n\n const injectablesStart = nodeProviderIndexes & TNodeProviderIndexes.ProvidersStartIndexMask;\n const directivesStart = tNode.directiveStart;\n const directiveEnd = tNode.directiveEnd;\n const cptViewProvidersCount =\n nodeProviderIndexes >> TNodeProviderIndexes.CptViewProvidersCountShift;\n const startingIndex =\n canAccessViewProviders ? injectablesStart : injectablesStart + cptViewProvidersCount;\n // When the host special case applies, only the viewProviders and the component are visible\n const endIndex = isHostSpecialCase ? injectablesStart + cptViewProvidersCount : directiveEnd;\n for (let i = startingIndex; i < endIndex; i++) {\n const providerTokenOrDef =\n tInjectables[i] as InjectionToken| Type| DirectiveDef| string;\n if (i < directivesStart && token === providerTokenOrDef ||\n i >= directivesStart && (providerTokenOrDef as DirectiveDef).type === token) {\n return i;\n }\n }\n if (isHostSpecialCase) {\n const dirDef = tInjectables[directivesStart] as DirectiveDef;\n if (dirDef && isComponentDef(dirDef) && dirDef.type === token) {\n return directivesStart;\n }\n }\n return null;\n}\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 */\nexport function getNodeInjectable(\n lView: LView, tView: TView, index: number, tNode: TDirectiveHostNode): any {\n let value = lView[index];\n const tData = tView.data;\n if (isFactory(value)) {\n const factory: NodeInjectorFactory = value;\n if (factory.resolving) {\n throwCyclicDependencyError(stringifyForError(tData[index]));\n }\n const previousIncludeViewProviders = setIncludeViewProviders(factory.canSeeViewProviders);\n factory.resolving = true;\n const previousInjectImplementation =\n factory.injectImpl ? setInjectImplementation(factory.injectImpl) : null;\n const success = enterDI(lView, tNode, InjectFlags.Default);\n ngDevMode &&\n assertEqual(\n success, true,\n 'Because flags do not contain \\`SkipSelf\\' we expect this to always succeed.');\n try {\n value = lView[index] = factory.factory(undefined, tData, lView, tNode);\n // 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 if (tView.firstCreatePass && index >= tNode.directiveStart) {\n ngDevMode && assertDirectiveDef(tData[index]);\n registerPreOrderHooks(index, tData[index] as DirectiveDef, tView);\n }\n } finally {\n previousInjectImplementation !== null &&\n setInjectImplementation(previousInjectImplementation);\n setIncludeViewProviders(previousIncludeViewProviders);\n factory.resolving = false;\n leaveDI();\n }\n }\n return value;\n}\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 */\nexport function bloomHashBitOrFactory(token: Type|AbstractType|InjectionToken|\n string): number|Function|undefined {\n ngDevMode && assertDefined(token, 'token must be defined');\n if (typeof token === 'string') {\n return token.charCodeAt(0) || 0;\n }\n const tokenId: number|undefined =\n // First check with `hasOwnProperty` so we don't get an inherited ID.\n token.hasOwnProperty(NG_ELEMENT_ID) ? (token as any)[NG_ELEMENT_ID] : undefined;\n // Negative token IDs are used for special objects such as `Injector`\n if (typeof tokenId === 'number') {\n if (tokenId >= 0) {\n return tokenId & BLOOM_MASK;\n } else {\n ngDevMode &&\n assertEqual(tokenId, InjectorMarkers.Injector, 'Expecting to get Special Injector Id');\n return createNodeInjector;\n }\n } else {\n return tokenId;\n }\n}\n\nexport function bloomHasToken(bloomHash: number, injectorIndex: number, injectorView: LView|TData) {\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 const mask = 1 << bloomHash;\n\n // Each bloom bucket in `injectorView` represents `BLOOM_BUCKET_BITS` number of bits of\n // `bloomHash`. Any bits in `bloomHash` beyond `BLOOM_BUCKET_BITS` indicate the bucket offset\n // that should be used.\n const value = injectorView[injectorIndex + (bloomHash >> BLOOM_BUCKET_BITS)];\n\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 return !!(value & mask);\n}\n\n/** Returns true if flags prevent parent injector from being searched for tokens */\nfunction shouldSearchParent(flags: InjectFlags, isFirstHostTNode: boolean): boolean|number {\n return !(flags & InjectFlags.Self) && !(flags & InjectFlags.Host && isFirstHostTNode);\n}\n\nexport class NodeInjector implements Injector {\n constructor(\n private _tNode: TElementNode|TContainerNode|TElementContainerNode|null,\n private _lView: LView) {}\n\n get(token: any, notFoundValue?: any): any {\n return getOrCreateInjectable(this._tNode, this._lView, token, undefined, notFoundValue);\n }\n}\n\n/**\n * @codeGenApi\n */\nexport function ɵɵgetFactoryOf(type: Type): FactoryFn|null {\n const typeAny = type as any;\n\n if (isForwardRef(type)) {\n return (() => {\n const factory = ɵɵgetFactoryOf(resolveForwardRef(typeAny));\n return factory ? factory() : null;\n }) as any;\n }\n\n let factory = getFactoryDef(typeAny);\n if (factory === null) {\n const injectorDef = getInjectorDef(typeAny);\n factory = injectorDef && injectorDef.factory;\n }\n return factory || null;\n}\n\n/**\n * @codeGenApi\n */\nexport function ɵɵgetInheritedFactory(type: Type): (type: Type) => T {\n return noSideEffects(() => {\n const ownConstructor = type.prototype.constructor;\n const ownFactory = ownConstructor[NG_FACTORY_DEF] || ɵɵgetFactoryOf(ownConstructor);\n const objectPrototype = Object.prototype;\n let parent = Object.getPrototypeOf(type.prototype).constructor;\n\n // Go up the prototype until we hit `Object`.\n while (parent && parent !== objectPrototype) {\n const factory = parent[NG_FACTORY_DEF] || ɵɵgetFactoryOf(parent);\n\n // 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 if (factory && factory !== ownFactory) {\n return factory;\n }\n\n parent = Object.getPrototypeOf(parent);\n }\n\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 return t => new 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 */\nimport {injectAttributeImpl} from '../di';\nimport {getCurrentTNode} from '../state';\n\n/**\n * Facade for the attribute injection from DI.\n *\n * @codeGenApi\n */\nexport function ɵɵinjectAttribute(attrNameToInject: string): string|null {\n return injectAttributeImpl(getCurrentTNode()!, attrNameToInject);\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {Type} from '../interface/type';\n\nimport {noSideEffects} from './closure';\n\n\n\n/**\n * An interface implemented by all Angular type decorators, which allows them to be used as\n * decorators as well as Angular syntax.\n *\n * ```\n * @ng.Component({...})\n * class MyClass {...}\n * ```\n *\n * @publicApi\n */\nexport interface TypeDecorator {\n /**\n * Invoke as decorator.\n */\n >(type: T): T;\n\n // Make TypeDecorator assignable to built-in ParameterDecorator type.\n // ParameterDecorator is declared in lib.d.ts as a `declare type`\n // so we cannot declare this interface as a subtype.\n // see https://github.com/angular/angular/issues/3379#issuecomment-126169417\n (target: Object, propertyKey?: string|symbol, parameterIndex?: number): void;\n}\n\nexport const ANNOTATIONS = '__annotations__';\nexport const PARAMETERS = '__parameters__';\nexport const PROP_METADATA = '__prop__metadata__';\n\n/**\n * @suppress {globalThis}\n */\nexport function makeDecorator(\n name: string, props?: (...args: any[]) => any, parentClass?: any,\n additionalProcessing?: (type: Type) => void,\n typeFn?: (type: Type, ...args: any[]) => void):\n {new (...args: any[]): any; (...args: any[]): any; (...args: any[]): (cls: any) => any;} {\n return noSideEffects(() => {\n const metaCtor = makeMetadataCtor(props);\n\n function DecoratorFactory(\n this: unknown|typeof DecoratorFactory, ...args: any[]): (cls: Type) => any {\n if (this instanceof DecoratorFactory) {\n metaCtor.call(this, ...args);\n return this as typeof DecoratorFactory;\n }\n\n const annotationInstance = new (DecoratorFactory as any)(...args);\n return function TypeDecorator(cls: Type) {\n if (typeFn) typeFn(cls, ...args);\n // Use of Object.defineProperty is important since it creates non-enumerable property which\n // prevents the property is copied during subclassing.\n const annotations = cls.hasOwnProperty(ANNOTATIONS) ?\n (cls as any)[ANNOTATIONS] :\n Object.defineProperty(cls, ANNOTATIONS, {value: []})[ANNOTATIONS];\n annotations.push(annotationInstance);\n\n\n if (additionalProcessing) additionalProcessing(cls);\n\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 as any).annotationCls = DecoratorFactory;\n return DecoratorFactory as any;\n });\n}\n\nfunction makeMetadataCtor(props?: (...args: any[]) => any): any {\n return function ctor(this: any, ...args: any[]) {\n if (props) {\n const values = props(...args);\n for (const propName in values) {\n this[propName] = values[propName];\n }\n }\n };\n}\n\nexport function makeParamDecorator(\n name: string, props?: (...args: any[]) => any, parentClass?: any): any {\n return noSideEffects(() => {\n const metaCtor = makeMetadataCtor(props);\n function ParamDecoratorFactory(\n this: unknown|typeof ParamDecoratorFactory, ...args: any[]): any {\n if (this instanceof ParamDecoratorFactory) {\n metaCtor.apply(this, args);\n return this;\n }\n const annotationInstance = new (ParamDecoratorFactory)(...args);\n\n (ParamDecorator).annotation = annotationInstance;\n return ParamDecorator;\n\n function ParamDecorator(cls: any, unusedKey: any, index: number): any {\n // Use of Object.defineProperty is important since it creates non-enumerable property which\n // prevents the property is copied during subclassing.\n const parameters = cls.hasOwnProperty(PARAMETERS) ?\n (cls as any)[PARAMETERS] :\n Object.defineProperty(cls, PARAMETERS, {value: []})[PARAMETERS];\n\n // there might be gaps if some in between parameters do not have annotations.\n // we pad with nulls.\n while (parameters.length <= index) {\n parameters.push(null);\n }\n\n (parameters[index] = parameters[index] || []).push(annotationInstance);\n return cls;\n }\n }\n if (parentClass) {\n ParamDecoratorFactory.prototype = Object.create(parentClass.prototype);\n }\n ParamDecoratorFactory.prototype.ngMetadataName = name;\n (ParamDecoratorFactory).annotationCls = ParamDecoratorFactory;\n return ParamDecoratorFactory;\n });\n}\n\nexport function makePropDecorator(\n name: string, props?: (...args: any[]) => any, parentClass?: any,\n additionalProcessing?: (target: any, name: string, ...args: any[]) => void): any {\n return noSideEffects(() => {\n const metaCtor = makeMetadataCtor(props);\n\n function PropDecoratorFactory(this: unknown|typeof PropDecoratorFactory, ...args: any[]): any {\n if (this instanceof PropDecoratorFactory) {\n metaCtor.apply(this, args);\n return this;\n }\n\n const decoratorInstance = new (PropDecoratorFactory)(...args);\n\n function PropDecorator(target: any, name: string) {\n const constructor = target.constructor;\n // Use of Object.defineProperty is important because it creates a non-enumerable property\n // which prevents the property from being copied during subclassing.\n const meta = constructor.hasOwnProperty(PROP_METADATA) ?\n (constructor as any)[PROP_METADATA] :\n Object.defineProperty(constructor, PROP_METADATA, {value: {}})[PROP_METADATA];\n meta[name] = meta.hasOwnProperty(name) && meta[name] || [];\n meta[name].unshift(decoratorInstance);\n\n if (additionalProcessing) additionalProcessing(target, name, ...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\nimport {ɵɵinjectAttribute} from '../render3/instructions/di_attr';\nimport {makeParamDecorator} from '../util/decorators';\n\n\n/**\n * Type of the Attribute decorator / constructor function.\n *\n * @publicApi\n */\nexport interface AttributeDecorator {\n /**\n * Parameter decorator for a directive constructor that designates\n * a host-element attribute whose value is injected as a constant string literal.\n *\n * @usageNotes\n *\n * Suppose we have an `` element and want to know its `type`.\n *\n * ```html\n * \n * ```\n *\n * The following example uses the decorator to inject the string literal `text` in a directive.\n *\n * {@example core/ts/metadata/metadata.ts region='attributeMetadata'}\n *\n * The following example uses the decorator in a component constructor.\n *\n * {@example core/ts/metadata/metadata.ts region='attributeFactory'}\n *\n */\n (name: string): any;\n new(name: string): Attribute;\n}\n\n/**\n * Type of the Attribute metadata.\n *\n * @publicApi\n */\nexport interface Attribute {\n /**\n * The name of the attribute whose value can be injected.\n */\n attributeName: string;\n}\n\nfunction CREATE_ATTRIBUTE_DECORATOR__PRE_R3__(): AttributeDecorator {\n return makeParamDecorator('Attribute', (attributeName?: string) => ({attributeName}));\n}\n\nexport function CREATE_ATTRIBUTE_DECORATOR__POST_R3__(): AttributeDecorator {\n return makeParamDecorator(\n 'Attribute',\n (attributeName?: string) =>\n ({attributeName, __NG_ELEMENT_ID__: () => ɵɵinjectAttribute(attributeName!)}));\n}\n\nconst CREATE_ATTRIBUTE_DECORATOR_IMPL = CREATE_ATTRIBUTE_DECORATOR__PRE_R3__;\n\n/**\n * Attribute decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nexport const Attribute: AttributeDecorator = CREATE_ATTRIBUTE_DECORATOR_IMPL();\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {Type} from '../interface/type';\nimport {assertLessThan} from '../util/assert';\n\nimport {ɵɵdefineInjectable} from './interface/defs';\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('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 */\nexport class InjectionToken {\n /** @internal */\n readonly ngMetadataName = 'InjectionToken';\n\n readonly ɵprov: never|undefined;\n\n constructor(protected _desc: string, options?: {\n providedIn?: Type|'root'|'platform'|'any'|null, factory: () => T\n }) {\n this.ɵprov = undefined;\n if (typeof options == 'number') {\n (typeof ngDevMode === 'undefined' || ngDevMode) &&\n assertLessThan(options, 0, 'Only negative numbers are supported here');\n // This is a special hack to assign __NG_ELEMENT_ID__ to this instance.\n // See `InjectorMarkers`\n (this as any).__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 toString(): string {\n return `InjectionToken ${this._desc}`;\n }\n}\n\nexport interface InjectableDefToken extends InjectionToken {\n ɵprov: never;\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {InjectionToken} from '../di/injection_token';\nimport {Type} from '../interface/type';\nimport {makePropDecorator} from '../util/decorators';\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 */\nexport const ANALYZE_FOR_ENTRY_COMPONENTS = new InjectionToken('AnalyzeForEntryComponents');\n\n/**\n * Type of the `Attribute` decorator / constructor function.\n *\n * @publicApi\n */\nexport interface AttributeDecorator {\n /**\n * Specifies that a constant attribute value should be injected.\n *\n * The directive can inject constant string literals of host element attributes.\n *\n * @usageNotes\n *\n * Suppose we have an `` element and want to know its `type`.\n *\n * ```html\n * \n * ```\n *\n * A decorator can inject string literal `text` as in the following example.\n *\n * {@example core/ts/metadata/metadata.ts region='attributeMetadata'}\n *\n * @publicApi\n */\n (name: string): any;\n new(name: string): Attribute;\n}\n\n\n/**\n * Type of the Attribute metadata.\n *\n * @publicApi\n */\nexport interface Attribute {\n /**\n * The name of the attribute to be injected into the constructor.\n */\n attributeName?: string;\n}\n\n/**\n * Type of the Query metadata.\n *\n * @publicApi\n */\nexport interface Query {\n descendants: boolean;\n emitDistinctChangesOnly: boolean;\n first: boolean;\n read: any;\n isViewQuery: boolean;\n selector: any;\n static?: boolean;\n}\n\n// Stores the default value of `emitDistinctChangesOnly` when the `emitDistinctChangesOnly` is not\n// explicitly set. This value will be changed to `true` in v12.\n// TODO(misko): switch the default in v12 to `true`. See: packages/compiler/src/core.ts\nexport const emitDistinctChangesOnlyDefaultValue = false;\n\n\n/**\n * Base class for query metadata.\n *\n * @see `ContentChildren`.\n * @see `ContentChild`.\n * @see `ViewChildren`.\n * @see `ViewChild`.\n *\n * @publicApi\n */\nexport abstract class Query {}\n\n/**\n * Type of the ContentChildren decorator / constructor function.\n *\n * @see `ContentChildren`.\n * @publicApi\n */\nexport interface ContentChildrenDecorator {\n /**\n * Parameter decorator that configures a content query.\n *\n * Use to get the `QueryList` of elements or directives from the content DOM.\n * Any time a child element is added, removed, or moved, the query list will be\n * updated, and the changes observable of the query list will emit a new value.\n *\n * Content queries are set before the `ngAfterContentInit` callback is called.\n *\n * Does not retrieve elements or directives that are in other components' templates,\n * since a component's template is always a black box to its ancestors.\n *\n * **Metadata Properties**:\n *\n * * **selector** - The directive type or the name used for querying.\n * * **descendants** - True to include all descendants, otherwise include only direct children.\n * * **emitDistinctChangesOnly** - The ` QueryList#changes` observable will emit new values only\n * if the QueryList result has changed. The default value will change from `false` to `true` in\n * v12. When `false` the `changes` observable might emit even if the QueryList has not changed.\n * * **read** - Used to read a different token from the queried elements.\n *\n * @usageNotes\n *\n * Here is a simple demonstration of how the `ContentChildren` decorator can be used.\n *\n * {@example core/di/ts/contentChildren/content_children_howto.ts region='HowTo'}\n *\n * ### Tab-pane example\n *\n * Here is a slightly more realistic example that shows how `ContentChildren` decorators\n * can be used to implement a tab pane component.\n *\n * {@example core/di/ts/contentChildren/content_children_example.ts region='Component'}\n *\n * @Annotation\n */\n (selector: Type|InjectionToken|Function|string, opts?: {\n descendants?: boolean,\n emitDistinctChangesOnly?: boolean,\n read?: any,\n }): any;\n new(selector: Type|InjectionToken|Function|string,\n opts?: {descendants?: boolean, emitDistinctChangesOnly?: boolean, read?: any}): Query;\n}\n\n/**\n * Type of the ContentChildren metadata.\n *\n *\n * @Annotation\n * @publicApi\n */\nexport type ContentChildren = Query;\n\n/**\n * ContentChildren decorator and metadata.\n *\n *\n * @Annotation\n * @publicApi\n */\nexport const ContentChildren: ContentChildrenDecorator = makePropDecorator(\n 'ContentChildren', (selector?: any, data: any = {}) => ({\n selector,\n first: false,\n isViewQuery: false,\n descendants: false,\n emitDistinctChangesOnly: emitDistinctChangesOnlyDefaultValue,\n ...data\n }),\n Query);\n\n/**\n * Type of the ContentChild decorator / constructor function.\n *\n * @publicApi\n */\nexport interface ContentChildDecorator {\n /**\n * Parameter decorator that configures a content query.\n *\n * Use to get the first element or the directive matching the selector from the content DOM.\n * If the content DOM changes, and a new child matches the selector,\n * the property will be updated.\n *\n * Content queries are set before the `ngAfterContentInit` callback is called.\n *\n * Does not retrieve elements or directives that are in other components' templates,\n * since a component's template is always a black box to its ancestors.\n *\n * **Metadata Properties**:\n *\n * * **selector** - The directive type or the name used for querying.\n * * **read** - Used to read a different token from the queried element.\n * * **static** - True to resolve query results before change detection runs,\n * false to resolve after change detection. Defaults to false.\n *\n * @usageNotes\n *\n * {@example core/di/ts/contentChild/content_child_howto.ts region='HowTo'}\n *\n * ### Example\n *\n * {@example core/di/ts/contentChild/content_child_example.ts region='Component'}\n *\n * @Annotation\n */\n (selector: Type|InjectionToken|Function|string,\n opts?: {read?: any, static?: boolean}): any;\n new(selector: Type|InjectionToken|Function|string,\n opts?: {read?: any, static?: boolean}): ContentChild;\n}\n\n/**\n * Type of the ContentChild metadata.\n *\n * @publicApi\n */\nexport type ContentChild = Query;\n\n/**\n * ContentChild decorator and metadata.\n *\n *\n * @Annotation\n *\n * @publicApi\n */\nexport const ContentChild: ContentChildDecorator = makePropDecorator(\n 'ContentChild',\n (selector?: any, data: any = {}) =>\n ({selector, first: true, isViewQuery: false, descendants: true, ...data}),\n Query);\n\n/**\n * Type of the ViewChildren decorator / constructor function.\n *\n * @see `ViewChildren`.\n *\n * @publicApi\n */\nexport interface ViewChildrenDecorator {\n /**\n * Parameter decorator that configures a view query.\n *\n * Use to get the `QueryList` of elements or directives from the view DOM.\n * Any time a child element is added, removed, or moved, the query list will be updated,\n * and the changes observable of the query list will emit a new value.\n *\n * View queries are set before the `ngAfterViewInit` callback is called.\n *\n * **Metadata Properties**:\n *\n * * **selector** - The directive type or the name used for querying.\n * * **read** - Used to read a different token from the queried elements.\n * * **emitDistinctChangesOnly** - The ` QueryList#changes` observable will emit new values only\n * if the QueryList result has changed. The default value will change from `false` to `true` in\n * v12. When `false` the `changes` observable might emit even if the QueryList has not changed.\n *\n * @usageNotes\n *\n * {@example core/di/ts/viewChildren/view_children_howto.ts region='HowTo'}\n *\n * ### Another example\n *\n * {@example core/di/ts/viewChildren/view_children_example.ts region='Component'}\n *\n * @Annotation\n */\n (selector: Type|InjectionToken|Function|string,\n opts?: {read?: any, emitDistinctChangesOnly?: boolean}): any;\n new(selector: Type|InjectionToken|Function|string,\n opts?: {read?: any, emitDistinctChangesOnly?: boolean}): ViewChildren;\n}\n\n/**\n * Type of the ViewChildren metadata.\n *\n * @publicApi\n */\nexport type ViewChildren = Query;\n\n/**\n * ViewChildren decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nexport const ViewChildren: ViewChildrenDecorator = makePropDecorator(\n 'ViewChildren', (selector?: any, data: any = {}) => ({\n selector,\n first: false,\n isViewQuery: true,\n descendants: true,\n emitDistinctChangesOnly: emitDistinctChangesOnlyDefaultValue,\n ...data\n }),\n Query);\n\n/**\n * Type of the ViewChild decorator / constructor function.\n *\n * @see `ViewChild`.\n * @publicApi\n */\nexport interface ViewChildDecorator {\n /**\n * @description\n * Property decorator that configures a view query.\n * The change detector looks for the first element or the directive matching the selector\n * in the view DOM. If the view DOM changes, and a new child matches the selector,\n * the property is updated.\n *\n * View queries are set before the `ngAfterViewInit` callback is called.\n *\n * **Metadata Properties**:\n *\n * * **selector** - The directive type or the name used for querying.\n * * **read** - Used to read a different token from the queried elements.\n * * **static** - True to resolve query results before change detection runs,\n * false to resolve after change detection. Defaults to false.\n *\n *\n * The following selectors are supported.\n * * Any class with the `@Component` or `@Directive` decorator\n * * A template reference variable as a string (e.g. query ``\n * with `@ViewChild('cmp')`)\n * * Any provider defined in the child component tree of the current component (e.g.\n * `@ViewChild(SomeService) someService: SomeService`)\n * * Any provider defined through a string token (e.g. `@ViewChild('someToken') someTokenVal:\n * any`)\n * * A `TemplateRef` (e.g. query `` with `@ViewChild(TemplateRef)\n * template;`)\n *\n * @usageNotes\n *\n * {@example core/di/ts/viewChild/view_child_example.ts region='Component'}\n *\n * ### Example 2\n *\n * {@example core/di/ts/viewChild/view_child_howto.ts region='HowTo'}\n *\n * @Annotation\n */\n (selector: Type|InjectionToken|Function|string,\n opts?: {read?: any, static?: boolean}): any;\n new(selector: Type|InjectionToken|Function|string,\n opts?: {read?: any, static?: boolean}): ViewChild;\n}\n\n/**\n * Type of the ViewChild metadata.\n *\n * @publicApi\n */\nexport type ViewChild = Query;\n\n/**\n * ViewChild decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nexport const ViewChild: ViewChildDecorator = makePropDecorator(\n 'ViewChild',\n (selector: any, data: any) =>\n ({selector, first: true, isViewQuery: true, descendants: true, ...data}),\n 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/**\n * A set of interfaces which are shared between `@angular/core` and `@angular/compiler` to allow\n * for late binding of `@angular/compiler` for JIT purposes.\n *\n * This file has two copies. Please ensure that they are in sync:\n * - packages/compiler/src/compiler_facade_interface.ts (main)\n * - packages/core/src/compiler/compiler_facade_interface.ts (replica)\n *\n * Please ensure that the two files are in sync using this command:\n * ```\n * cp packages/compiler/src/compiler_facade_interface.ts \\\n * packages/core/src/compiler/compiler_facade_interface.ts\n * ```\n */\n\nexport interface ExportedCompilerFacade {\n ɵcompilerFacade: CompilerFacade;\n}\n\nexport interface CompilerFacade {\n compilePipe(angularCoreEnv: CoreEnvironment, sourceMapUrl: string, meta: R3PipeMetadataFacade):\n any;\n compilePipeDeclaration(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string, declaration: R3DeclarePipeFacade): any;\n compileInjectable(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string, meta: R3InjectableMetadataFacade): any;\n compileInjector(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string, meta: R3InjectorMetadataFacade): any;\n compileNgModule(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string, meta: R3NgModuleMetadataFacade): any;\n compileDirective(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string, meta: R3DirectiveMetadataFacade): any;\n compileDirectiveDeclaration(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string,\n declaration: R3DeclareDirectiveFacade): any;\n compileComponent(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string, meta: R3ComponentMetadataFacade): any;\n compileComponentDeclaration(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string,\n declaration: R3DeclareComponentFacade): any;\n compileFactory(\n angularCoreEnv: CoreEnvironment, sourceMapUrl: string, meta: R3FactoryDefMetadataFacade): any;\n\n createParseSourceSpan(kind: string, typeName: string, sourceUrl: string): ParseSourceSpan;\n\n R3ResolvedDependencyType: typeof R3ResolvedDependencyType;\n R3FactoryTarget: typeof R3FactoryTarget;\n ResourceLoader: {new(): ResourceLoader};\n}\n\nexport interface CoreEnvironment {\n [name: string]: Function;\n}\n\nexport type ResourceLoader = {\n get(url: string): Promise|string;\n};\n\nexport type StringMap = {\n [key: string]: string;\n};\n\nexport type StringMapWithRename = {\n [key: string]: string|[string, string];\n};\n\nexport type Provider = any;\n\nexport enum R3ResolvedDependencyType {\n Token = 0,\n Attribute = 1,\n ChangeDetectorRef = 2,\n Invalid = 3,\n}\n\nexport enum R3FactoryTarget {\n Directive = 0,\n Component = 1,\n Injectable = 2,\n Pipe = 3,\n NgModule = 4,\n}\n\nexport interface R3DependencyMetadataFacade {\n token: any;\n resolved: R3ResolvedDependencyType;\n host: boolean;\n optional: boolean;\n self: boolean;\n skipSelf: boolean;\n}\n\nexport interface R3PipeMetadataFacade {\n name: string;\n type: any;\n typeArgumentCount: number;\n pipeName: string;\n deps: R3DependencyMetadataFacade[]|null;\n pure: boolean;\n}\n\nexport interface R3InjectableMetadataFacade {\n name: string;\n type: any;\n typeArgumentCount: number;\n providedIn: any;\n useClass?: any;\n useFactory?: any;\n useExisting?: any;\n useValue?: any;\n userDeps?: R3DependencyMetadataFacade[];\n}\n\nexport interface R3NgModuleMetadataFacade {\n type: any;\n bootstrap: Function[];\n declarations: Function[];\n imports: Function[];\n exports: Function[];\n schemas: {name: string}[]|null;\n id: string|null;\n}\n\nexport interface R3InjectorMetadataFacade {\n name: string;\n type: any;\n deps: R3DependencyMetadataFacade[]|null;\n providers: any[];\n imports: any[];\n}\n\nexport interface R3DirectiveMetadataFacade {\n name: string;\n type: any;\n typeArgumentCount: number;\n typeSourceSpan: ParseSourceSpan;\n deps: R3DependencyMetadataFacade[]|null;\n selector: string|null;\n queries: R3QueryMetadataFacade[];\n host: {[key: string]: string};\n propMetadata: {[key: string]: any[]};\n lifecycle: {usesOnChanges: boolean;};\n inputs: string[];\n outputs: string[];\n usesInheritance: boolean;\n exportAs: string[]|null;\n providers: Provider[]|null;\n viewQueries: R3QueryMetadataFacade[];\n}\n\nexport interface R3ComponentMetadataFacade extends R3DirectiveMetadataFacade {\n template: string;\n preserveWhitespaces: boolean;\n animations: any[]|undefined;\n pipes: Map;\n directives: R3UsedDirectiveMetadata[];\n styles: string[];\n encapsulation: ViewEncapsulation;\n viewProviders: Provider[]|null;\n interpolation?: [string, string];\n changeDetection?: ChangeDetectionStrategy;\n}\n\nexport type OpaqueValue = unknown;\n\nexport interface R3DeclareDirectiveFacade {\n selector?: string;\n type: Function;\n inputs?: {[classPropertyName: string]: string|[string, string]};\n outputs?: {[classPropertyName: string]: string};\n host?: {\n attributes?: {[key: string]: OpaqueValue};\n listeners?: {[key: string]: string};\n properties?: {[key: string]: string};\n classAttribute?: string;\n styleAttribute?: string;\n };\n queries?: R3DeclareQueryMetadataFacade[];\n viewQueries?: R3DeclareQueryMetadataFacade[];\n providers?: OpaqueValue;\n exportAs?: string[];\n usesInheritance?: boolean;\n usesOnChanges?: boolean;\n}\n\nexport interface R3DeclareComponentFacade extends R3DeclareDirectiveFacade {\n template: string;\n isInline?: boolean;\n styles?: string[];\n directives?: {\n selector: string; type: OpaqueValue | (() => OpaqueValue);\n inputs?: string[];\n outputs?: string[];\n exportAs?: string[];\n }[];\n pipes?: {[pipeName: string]: OpaqueValue|(() => OpaqueValue)};\n viewProviders?: OpaqueValue;\n animations?: OpaqueValue;\n changeDetection?: ChangeDetectionStrategy;\n encapsulation?: ViewEncapsulation;\n interpolation?: [string, string];\n preserveWhitespaces?: boolean;\n}\n\nexport interface R3UsedDirectiveMetadata {\n selector: string;\n inputs: string[];\n outputs: string[];\n exportAs: string[]|null;\n type: any;\n}\n\nexport interface R3FactoryDefMetadataFacade {\n name: string;\n type: any;\n typeArgumentCount: number;\n deps: R3DependencyMetadataFacade[]|null;\n injectFn: 'directiveInject'|'inject';\n target: R3FactoryTarget;\n}\n\nexport enum ViewEncapsulation {\n Emulated = 0,\n // Historically the 1 value was for `Native` encapsulation which has been removed as of v11.\n None = 2,\n ShadowDom = 3\n}\n\nexport type ChangeDetectionStrategy = number;\n\nexport interface R3QueryMetadataFacade {\n propertyName: string;\n first: boolean;\n predicate: any|string[];\n descendants: boolean;\n emitDistinctChangesOnly: boolean;\n read: any|null;\n static: boolean;\n}\n\nexport interface R3DeclareQueryMetadataFacade {\n propertyName: string;\n first?: boolean;\n predicate: OpaqueValue|string[];\n descendants?: boolean;\n read?: OpaqueValue;\n static?: boolean;\n emitDistinctChangesOnly?: boolean;\n}\n\nexport interface R3DeclarePipeFacade {\n type: Function;\n name: string;\n pure?: boolean;\n}\n\nexport interface ParseSourceSpan {\n start: any;\n end: any;\n details: any;\n fullStart: any;\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nimport {global} from '../util/global';\nimport {CompilerFacade, ExportedCompilerFacade} from './compiler_facade_interface';\nexport * from './compiler_facade_interface';\n\nexport function getCompilerFacade(): CompilerFacade {\n const globalNg: ExportedCompilerFacade = global['ng'];\n if (!globalNg || !globalNg.ɵcompilerFacade) {\n throw new Error(\n `Angular JIT compilation failed: '@angular/compiler' not loaded!\\n` +\n ` - JIT compilation is discouraged for production use-cases! Consider AOT mode instead.\\n` +\n ` - Did you bootstrap using '@angular/platform-browser-dynamic' or '@angular/platform-server'?\\n` +\n ` - Alternatively provide the compiler with 'import \"@angular/compiler\";' before bootstrapping.`);\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/**\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 */\nexport const Type = Function;\n\nexport function isType(v: any): v is Type {\n return typeof v === 'function';\n}\n\n/**\n * @description\n *\n * Represents an abstract class `T`, if applied to a concrete class it would stop being\n * instantiable.\n *\n * @publicApi\n */\nexport interface AbstractType extends Function {\n prototype: T;\n}\n\nexport interface Type extends Function {\n new(...args: any[]): T;\n}\n\nexport type Mutable = {\n [P in K]: T[P];\n};\n\n/**\n * Returns a writable type version of type.\n *\n * USAGE:\n * Given:\n * ```\n * interface Person {readonly name: string}\n * ```\n *\n * We would like to get a read/write version of `Person`.\n * ```\n * const WritablePerson = Writable;\n * ```\n *\n * The result is that you can do:\n *\n * ```\n * const readonlyPerson: Person = {name: 'Marry'};\n * readonlyPerson.name = 'John'; // TypeError\n * (readonlyPerson as WritablePerson).name = 'John'; // OK\n *\n * // Error: Correctly detects that `Person` did not have `age` property.\n * (readonlyPerson as WritablePerson).age = 30;\n * ```\n */\nexport type Writable = {\n -readonly[K in keyof T]: T[K];\n};\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {assertEqual, assertLessThanOrEqual} from './assert';\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 */\nexport function addAllToArray(items: any[], arr: any[]) {\n for (let i = 0; i < items.length; i++) {\n arr.push(items[i]);\n }\n}\n\n/**\n * Determines if the contents of two arrays is identical\n *\n * @param a first array\n * @param b second array\n * @param identityAccessor Optional function for extracting stable object identity from a value in\n * the array.\n */\nexport function arrayEquals(a: T[], b: T[], identityAccessor?: (value: T) => unknown): boolean {\n if (a.length !== b.length) return false;\n for (let i = 0; i < a.length; i++) {\n let valueA = a[i];\n let valueB = b[i];\n if (identityAccessor) {\n valueA = identityAccessor(valueA) as any;\n valueB = identityAccessor(valueB) as any;\n }\n if (valueB !== valueA) {\n return false;\n }\n }\n return true;\n}\n\n\n/**\n * Flattens an array.\n */\nexport function flatten(list: any[], dst?: any[]): any[] {\n if (dst === undefined) dst = list;\n for (let i = 0; i < list.length; i++) {\n let item = list[i];\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 flatten(item, dst);\n } else if (dst !== list) {\n dst.push(item);\n }\n }\n return dst;\n}\n\nexport function deepForEach(input: (T|any[])[], fn: (value: T) => void): void {\n input.forEach(value => Array.isArray(value) ? deepForEach(value, fn) : fn(value));\n}\n\nexport function addToArray(arr: any[], index: number, value: any): void {\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\nexport function removeFromArray(arr: any[], index: number): any {\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\nexport function newArray(size: number): T[];\nexport function newArray(size: number, value: T): T[];\nexport function newArray(size: number, value?: T): T[] {\n const list: T[] = [];\n for (let i = 0; i < size; i++) {\n list.push(value!);\n }\n return list;\n}\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 */\nexport function arraySplice(array: any[], index: number, count: number): void {\n const length = array.length - count;\n while (index < length) {\n array[index] = array[index + count];\n index++;\n }\n while (count--) {\n array.pop(); // shrink the array\n }\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 */\nexport function arrayInsert(array: any[], index: number, value: any): void {\n ngDevMode && assertLessThanOrEqual(index, array.length, 'Can\\'t insert past array end.');\n let end = array.length;\n while (end > index) {\n const previousEnd = end - 1;\n array[end] = array[previousEnd];\n end = previousEnd;\n }\n array[index] = value;\n}\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 */\nexport function arrayInsert2(array: any[], index: number, value1: any, value2: any): void {\n ngDevMode && assertLessThanOrEqual(index, array.length, 'Can\\'t insert past array end.');\n let end = array.length;\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 while (end > index) {\n const previousEnd = end - 2;\n array[end] = array[previousEnd];\n end--;\n }\n array[index] = value1;\n array[index + 1] = value2;\n }\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 */\nexport function arrayInsertSorted(array: string[], value: string): number {\n let index = arrayIndexOfSorted(array, value);\n if (index < 0) {\n // if we did not find it insert it.\n index = ~index;\n arrayInsert(array, index, value);\n }\n return index;\n}\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 */\nexport function arrayRemoveSorted(array: string[], value: string): number {\n const index = arrayIndexOfSorted(array, value);\n if (index >= 0) {\n arraySplice(array, index, 1);\n }\n return index;\n}\n\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 */\nexport function arrayIndexOfSorted(array: string[], value: string): number {\n return _arrayIndexOfSorted(array, value, 0);\n}\n\n\n/**\n * `KeyValueArray` is an array where even positions contain keys and odd positions contain values.\n *\n * `KeyValueArray` provides a very efficient way of iterating over its contents. For small\n * sets (~10) the cost of binary searching an `KeyValueArray` has about the same performance\n * characteristics that of a `Map` with significantly better memory footprint.\n *\n * If used as a `Map` the keys are stored in alphabetical order so that they can be binary searched\n * for retrieval.\n *\n * See: `keyValueArraySet`, `keyValueArrayGet`, `keyValueArrayIndexOf`, `keyValueArrayDelete`.\n */\nexport interface KeyValueArray extends Array {\n __brand__: 'array-map';\n}\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 */\nexport function keyValueArraySet(\n keyValueArray: KeyValueArray, key: string, value: V): number {\n let index = keyValueArrayIndexOf(keyValueArray, key);\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 return index;\n}\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 */\nexport function keyValueArrayGet(keyValueArray: KeyValueArray, key: string): V|undefined {\n const index = keyValueArrayIndexOf(keyValueArray, key);\n if (index >= 0) {\n // if we found it retrieve it.\n return keyValueArray[index | 1] as V;\n }\n return undefined;\n}\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 */\nexport function keyValueArrayIndexOf(keyValueArray: KeyValueArray, key: string): number {\n return _arrayIndexOfSorted(keyValueArray as string[], key, 1);\n}\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 */\nexport function keyValueArrayDelete(keyValueArray: KeyValueArray, key: string): number {\n const index = keyValueArrayIndexOf(keyValueArray, key);\n if (index >= 0) {\n // if we found it remove it.\n arraySplice(keyValueArray, index, 2);\n }\n return index;\n}\n\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 */\nfunction _arrayIndexOfSorted(array: string[], value: string, shift: number): number {\n ngDevMode && assertEqual(Array.isArray(array), true, 'Expecting an array');\n let start = 0;\n let end = array.length >> shift;\n while (end !== start) {\n const middle = start + ((end - start) >> 1); // find the middle.\n const current = array[middle << shift];\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 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\nimport {isType, Type} from '../interface/type';\nimport {newArray} from '../util/array_utils';\nimport {ANNOTATIONS, PARAMETERS, PROP_METADATA} from '../util/decorators';\nimport {global} from '../util/global';\nimport {stringify} from '../util/stringify';\n\nimport {PlatformReflectionCapabilities} from './platform_reflection_capabilities';\nimport {GetterFn, MethodFn, SetterFn} from './types';\n\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 */\nexport const ES5_DELEGATE_CTOR =\n /^function\\s+\\S+\\(\\)\\s*{[\\s\\S]+\\.apply\\(this,\\s*(arguments|[^()]+\\(arguments\\))\\)/;\n/** Regular expression that detects ES2015 classes which extend from other classes. */\nexport const 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 */\nexport const ES2015_INHERITED_CLASS_WITH_CTOR =\n /^class\\s+[A-Za-z\\d$_]*\\s*extends\\s+[^{]+{[\\s\\S]*constructor\\s*\\(/;\n/**\n * Regular expression that detects ES2015 classes which extend from other classes\n * and inherit a constructor.\n */\nexport const ES2015_INHERITED_CLASS_WITH_DELEGATE_CTOR =\n /^class\\s+[A-Za-z\\d$_]*\\s*extends\\s+[^{]+{[\\s\\S]*constructor\\s*\\(\\)\\s*{\\s*super\\(\\.\\.\\.arguments\\)/;\n\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 */\nexport function isDelegateCtor(typeStr: string): boolean {\n return ES5_DELEGATE_CTOR.test(typeStr) ||\n ES2015_INHERITED_CLASS_WITH_DELEGATE_CTOR.test(typeStr) ||\n (ES2015_INHERITED_CLASS.test(typeStr) && !ES2015_INHERITED_CLASS_WITH_CTOR.test(typeStr));\n}\n\nexport class ReflectionCapabilities implements PlatformReflectionCapabilities {\n private _reflect: any;\n\n constructor(reflect?: any) {\n this._reflect = reflect || global['Reflect'];\n }\n\n isReflectionEnabled(): boolean {\n return true;\n }\n\n factory(t: Type): (args: any[]) => T {\n return (...args: any[]) => new t(...args);\n }\n\n /** @internal */\n _zipTypesAndAnnotations(paramTypes: any[], paramAnnotations: any[]): any[][] {\n let result: any[][];\n\n if (typeof paramTypes === 'undefined') {\n result = newArray(paramAnnotations.length);\n } else {\n result = newArray(paramTypes.length);\n }\n\n for (let 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 if (paramAnnotations && paramAnnotations[i] != null) {\n result[i] = result[i].concat(paramAnnotations[i]);\n }\n }\n return result;\n }\n\n private _ownParameters(type: Type, parentCtor: any): any[][]|null {\n const typeStr = type.toString();\n // 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 if (isDelegateCtor(typeStr)) {\n return null;\n }\n\n // Prefer the direct API.\n if ((type).parameters && (type).parameters !== parentCtor.parameters) {\n return (type).parameters;\n }\n\n // API of tsickle for lowering decorators to properties on the class.\n const tsickleCtorParams = (type).ctorParameters;\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 const ctorParameters =\n typeof tsickleCtorParams === 'function' ? tsickleCtorParams() : tsickleCtorParams;\n const paramTypes = ctorParameters.map((ctorParam: any) => ctorParam && ctorParam.type);\n const paramAnnotations = ctorParameters.map(\n (ctorParam: any) =>\n ctorParam && convertTsickleDecoratorIntoMetadata(ctorParam.decorators));\n return this._zipTypesAndAnnotations(paramTypes, paramAnnotations);\n }\n\n // API for metadata created by invoking the decorators.\n const paramAnnotations = type.hasOwnProperty(PARAMETERS) && (type as any)[PARAMETERS];\n const paramTypes = this._reflect && this._reflect.getOwnMetadata &&\n this._reflect.getOwnMetadata('design:paramtypes', type);\n if (paramTypes || paramAnnotations) {\n return this._zipTypesAndAnnotations(paramTypes, paramAnnotations);\n }\n\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 return newArray(type.length);\n }\n\n parameters(type: Type): any[][] {\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 const parentCtor = getParentCtor(type);\n let parameters = this._ownParameters(type, parentCtor);\n if (!parameters && parentCtor !== Object) {\n parameters = this.parameters(parentCtor);\n }\n return parameters || [];\n }\n\n private _ownAnnotations(typeOrFunc: Type, parentCtor: any): any[]|null {\n // Prefer the direct API.\n if ((typeOrFunc).annotations && (typeOrFunc).annotations !== parentCtor.annotations) {\n let annotations = (typeOrFunc).annotations;\n if (typeof annotations === 'function' && annotations.annotations) {\n annotations = annotations.annotations;\n }\n return annotations;\n }\n\n // API of tsickle for lowering decorators to properties on the class.\n if ((typeOrFunc).decorators && (typeOrFunc).decorators !== parentCtor.decorators) {\n return convertTsickleDecoratorIntoMetadata((typeOrFunc).decorators);\n }\n\n // API for metadata created by invoking the decorators.\n if (typeOrFunc.hasOwnProperty(ANNOTATIONS)) {\n return (typeOrFunc as any)[ANNOTATIONS];\n }\n return null;\n }\n\n annotations(typeOrFunc: Type): any[] {\n if (!isType(typeOrFunc)) {\n return [];\n }\n const parentCtor = getParentCtor(typeOrFunc);\n const ownAnnotations = this._ownAnnotations(typeOrFunc, parentCtor) || [];\n const parentAnnotations = parentCtor !== Object ? this.annotations(parentCtor) : [];\n return parentAnnotations.concat(ownAnnotations);\n }\n\n private _ownPropMetadata(typeOrFunc: any, parentCtor: any): {[key: string]: any[]}|null {\n // Prefer the direct API.\n if ((typeOrFunc).propMetadata &&\n (typeOrFunc).propMetadata !== parentCtor.propMetadata) {\n let propMetadata = (typeOrFunc).propMetadata;\n if (typeof propMetadata === 'function' && propMetadata.propMetadata) {\n propMetadata = propMetadata.propMetadata;\n }\n return propMetadata;\n }\n\n // API of tsickle for lowering decorators to properties on the class.\n if ((typeOrFunc).propDecorators &&\n (typeOrFunc).propDecorators !== parentCtor.propDecorators) {\n const propDecorators = (typeOrFunc).propDecorators;\n const propMetadata = <{[key: string]: any[]}>{};\n Object.keys(propDecorators).forEach(prop => {\n propMetadata[prop] = convertTsickleDecoratorIntoMetadata(propDecorators[prop]);\n });\n return propMetadata;\n }\n\n // API for metadata created by invoking the decorators.\n if (typeOrFunc.hasOwnProperty(PROP_METADATA)) {\n return (typeOrFunc as any)[PROP_METADATA];\n }\n return null;\n }\n\n propMetadata(typeOrFunc: any): {[key: string]: any[]} {\n if (!isType(typeOrFunc)) {\n return {};\n }\n const parentCtor = getParentCtor(typeOrFunc);\n const propMetadata: {[key: string]: any[]} = {};\n if (parentCtor !== Object) {\n const parentPropMetadata = this.propMetadata(parentCtor);\n Object.keys(parentPropMetadata).forEach((propName) => {\n propMetadata[propName] = parentPropMetadata[propName];\n });\n }\n const ownPropMetadata = this._ownPropMetadata(typeOrFunc, parentCtor);\n if (ownPropMetadata) {\n Object.keys(ownPropMetadata).forEach((propName) => {\n const decorators: any[] = [];\n if (propMetadata.hasOwnProperty(propName)) {\n decorators.push(...propMetadata[propName]);\n }\n decorators.push(...ownPropMetadata[propName]);\n propMetadata[propName] = decorators;\n });\n }\n return propMetadata;\n }\n\n ownPropMetadata(typeOrFunc: any): {[key: string]: any[]} {\n if (!isType(typeOrFunc)) {\n return {};\n }\n return this._ownPropMetadata(typeOrFunc, getParentCtor(typeOrFunc)) || {};\n }\n\n hasLifecycleHook(type: any, lcProperty: string): boolean {\n return type instanceof Type && lcProperty in type.prototype;\n }\n\n guards(type: any): {[key: string]: any} {\n return {};\n }\n\n getter(name: string): GetterFn {\n return new Function('o', 'return o.' + name + ';');\n }\n\n setter(name: string): SetterFn {\n return new Function('o', 'v', 'return o.' + name + ' = v;');\n }\n\n method(name: string): MethodFn {\n const functionBody = `if (!o.${name}) throw new Error('\"${name}\" is undefined');\n return o.${name}.apply(o, args);`;\n return new Function('o', 'args', functionBody);\n }\n\n // There is not a concept of import uri in Js, but this is useful in developing Dart applications.\n importUri(type: any): string {\n // StaticSymbol\n if (typeof type === 'object' && type['filePath']) {\n return type['filePath'];\n }\n // Runtime type\n return `./${stringify(type)}`;\n }\n\n resourceUri(type: any): string {\n return `./${stringify(type)}`;\n }\n\n resolveIdentifier(name: string, moduleUrl: string, members: string[], runtime: any): any {\n return runtime;\n }\n resolveEnum(enumIdentifier: any, name: string): any {\n return enumIdentifier[name];\n }\n}\n\nfunction convertTsickleDecoratorIntoMetadata(decoratorInvocations: any[]): any[] {\n if (!decoratorInvocations) {\n return [];\n }\n return decoratorInvocations.map(decoratorInvocation => {\n const decoratorType = decoratorInvocation.type;\n const annotationCls = decoratorType.annotationCls;\n const annotationArgs = decoratorInvocation.args ? decoratorInvocation.args : [];\n return new annotationCls(...annotationArgs);\n });\n}\n\nfunction getParentCtor(ctor: Function): Type {\n const parentProto = ctor.prototype ? Object.getPrototypeOf(ctor.prototype) : null;\n const parentCtor = parentProto ? parentProto.constructor : null;\n // Note: We always use `Object` as the null value\n // to simplify checking later on.\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\nimport '../util/ng_dev_mode';\n\nimport {AbstractType, Type} from '../interface/type';\nimport {getClosureSafeProperty} from '../util/property';\nimport {stringify} from '../util/stringify';\n\nimport {resolveForwardRef} from './forward_ref';\nimport {getInjectImplementation, injectRootLimpMode} from './inject_switch';\nimport {InjectionToken} from './injection_token';\nimport {Injector} from './injector';\nimport {DecoratorFlags, InjectFlags, InternalInjectFlags} from './interface/injector';\nimport {ValueProvider} from './interface/provider';\n\n\nconst _THROW_IF_NOT_FOUND = {};\nexport const THROW_IF_NOT_FOUND = _THROW_IF_NOT_FOUND;\n\n/*\n * Name of a property (that we patch onto DI decorator), which is used as an annotation of which\n * InjectFlag this decorator represents. This allows to avoid direct references to the DI decorators\n * in the code, thus making them tree-shakable.\n */\nconst DI_DECORATOR_FLAG = '__NG_DI_FLAG__';\n\nexport const NG_TEMP_TOKEN_PATH = 'ngTempTokenPath';\nconst NG_TOKEN_PATH = 'ngTokenPath';\nconst NEW_LINE = /\\n/gm;\nconst NO_NEW_LINE = 'ɵ';\nexport const SOURCE = '__source';\n\nexport const USE_VALUE =\n getClosureSafeProperty({provide: String, useValue: getClosureSafeProperty});\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 */\nlet _currentInjector: Injector|undefined|null = undefined;\n\nexport function setCurrentInjector(injector: Injector|null|undefined): Injector|undefined|null {\n const former = _currentInjector;\n _currentInjector = injector;\n return former;\n}\n\nexport function injectInjectorOnly(token: Type|AbstractType|InjectionToken): T;\nexport function injectInjectorOnly(\n token: Type|AbstractType|InjectionToken, flags?: InjectFlags): T|null;\nexport function injectInjectorOnly(\n token: Type|AbstractType|InjectionToken, flags = InjectFlags.Default): T|null {\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\n/**\n * Generated instruction: 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 * (Additional documentation moved to `inject`, as it is the public API, and an alias for this\n * instruction)\n *\n * @see inject\n * @codeGenApi\n * @publicApi This instruction has been emitted by ViewEngine for some time and is deployed to npm.\n */\nexport function ɵɵinject(token: Type|AbstractType|InjectionToken): T;\nexport function ɵɵinject(\n token: Type|AbstractType|InjectionToken, flags?: InjectFlags): T|null;\nexport function ɵɵinject(\n token: Type|AbstractType|InjectionToken, flags = InjectFlags.Default): T|null {\n return (getInjectImplementation() || injectInjectorOnly)(resolveForwardRef(token), flags);\n}\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 */\nexport function ɵɵinvalidFactoryDep(index: number): never {\n const msg = ngDevMode ?\n `This constructor is not compatible with Angular Dependency Injection because its dependency at index ${\n 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 ${\n index} is correct and 2) the correct Angular decorators are defined for this class and its ancestors.` :\n 'invalid';\n throw new Error(msg);\n}\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 the injected value 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 */\nexport const inject = ɵɵinject;\n\nexport function injectArgs(types: (Type|InjectionToken|any[])[]): any[] {\n const args: any[] = [];\n for (let i = 0; i < types.length; i++) {\n const arg = resolveForwardRef(types[i]);\n if (Array.isArray(arg)) {\n if (arg.length === 0) {\n throw new Error('Arguments array must have arguments.');\n }\n let type: Type|undefined = undefined;\n let flags: InjectFlags = InjectFlags.Default;\n\n for (let j = 0; j < arg.length; j++) {\n const meta = arg[j];\n const flag = getInjectFlag(meta);\n if (typeof flag === 'number') {\n // Special case when we handle @Inject decorator.\n if (flag === DecoratorFlags.Inject) {\n type = meta.token;\n } else {\n flags |= flag;\n }\n } else {\n type = meta;\n }\n }\n\n args.push(ɵɵinject(type!, flags));\n } else {\n args.push(ɵɵinject(arg));\n }\n }\n return args;\n}\n\n/**\n * Attaches a given InjectFlag to a given decorator using monkey-patching.\n * Since DI decorators can be used in providers `deps` array (when provider is configured using\n * `useFactory`) without initialization (e.g. `Host`) and as an instance (e.g. `new Host()`), we\n * attach the flag to make it available both as a static property and as a field on decorator\n * instance.\n *\n * @param decorator Provided DI decorator.\n * @param flag InjectFlag that should be applied.\n */\nexport function attachInjectFlag(decorator: any, flag: InternalInjectFlags|DecoratorFlags): any {\n decorator[DI_DECORATOR_FLAG] = flag;\n decorator.prototype[DI_DECORATOR_FLAG] = flag;\n return decorator;\n}\n\n/**\n * Reads monkey-patched property that contains InjectFlag attached to a decorator.\n *\n * @param token Token that may contain monkey-patched DI flags property.\n */\nexport function getInjectFlag(token: any): number|undefined {\n return token[DI_DECORATOR_FLAG];\n}\n\nexport function catchInjectorError(\n e: any, token: any, injectorErrorName: string, source: string|null): never {\n const tokenPath: any[] = e[NG_TEMP_TOKEN_PATH];\n if (token[SOURCE]) {\n tokenPath.unshift(token[SOURCE]);\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\nexport function formatError(\n text: string, obj: any, injectorErrorName: string, source: string|null = null): string {\n text = text && text.charAt(0) === '\\n' && text.charAt(1) == NO_NEW_LINE ? text.substr(2) : text;\n let context = stringify(obj);\n if (Array.isArray(obj)) {\n context = obj.map(stringify).join(' -> ');\n } else if (typeof obj === 'object') {\n let parts = [];\n for (let key in obj) {\n if (obj.hasOwnProperty(key)) {\n let value = obj[key];\n parts.push(\n key + ':' + (typeof value === 'string' ? JSON.stringify(value) : stringify(value)));\n }\n }\n context = `{${parts.join(', ')}}`;\n }\n return `${injectorErrorName}${source ? '(' + source + ')' : ''}[${context}]: ${\n 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\nimport {makeParamDecorator} from '../util/decorators';\n\nimport {attachInjectFlag} from './injector_compatibility';\nimport {DecoratorFlags, InternalInjectFlags} from './interface/injector';\n\n\n/**\n * Type of the Inject decorator / constructor function.\n *\n * @publicApi\n */\nexport interface InjectDecorator {\n /**\n * Parameter decorator on a dependency parameter of a class constructor\n * that specifies a custom provider of the dependency.\n *\n * @usageNotes\n * The following example shows a class constructor that specifies a\n * custom provider of a dependency using the parameter decorator.\n *\n * When `@Inject()` is not present, the injector uses the type annotation of the\n * parameter as the provider.\n *\n * \n * \n *\n * @see [\"Dependency Injection Guide\"](guide/dependency-injection)\n *\n */\n (token: any): any;\n new(token: any): Inject;\n}\n\n/**\n * Type of the Inject metadata.\n *\n * @publicApi\n */\nexport interface Inject {\n /**\n * A [DI token](guide/glossary#di-token) that maps to the dependency to be injected.\n */\n token: any;\n}\n\n/**\n * Inject decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nexport const Inject: InjectDecorator = attachInjectFlag(\n // Disable tslint because `DecoratorFlags` is a const enum which gets inlined.\n // tslint:disable-next-line: no-toplevel-property-access\n makeParamDecorator('Inject', (token: any) => ({token})), DecoratorFlags.Inject);\n\n/**\n * Type of the Optional decorator / constructor function.\n *\n * @publicApi\n */\nexport interface OptionalDecorator {\n /**\n * Parameter decorator to be used on constructor parameters,\n * which marks the parameter as being an optional dependency.\n * The DI framework provides `null` if the dependency is not found.\n *\n * Can be used together with other parameter decorators\n * that modify how dependency injection operates.\n *\n * @usageNotes\n *\n * The following code allows the possibility of a `null` result:\n *\n * \n * \n *\n * @see [\"Dependency Injection Guide\"](guide/dependency-injection).\n */\n (): any;\n new(): Optional;\n}\n\n/**\n * Type of the Optional metadata.\n *\n * @publicApi\n */\nexport interface Optional {}\n\n/**\n * Optional decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nexport const Optional: OptionalDecorator =\n // Disable tslint because `InternalInjectFlags` is a const enum which gets inlined.\n // tslint:disable-next-line: no-toplevel-property-access\n attachInjectFlag(makeParamDecorator('Optional'), InternalInjectFlags.Optional);\n\n/**\n * Type of the Self decorator / constructor function.\n *\n * @publicApi\n */\nexport interface SelfDecorator {\n /**\n * Parameter decorator to be used on constructor parameters,\n * which tells the DI framework to start dependency resolution from the local injector.\n *\n * Resolution works upward through the injector hierarchy, so the children\n * of this class must configure their own providers or be prepared for a `null` result.\n *\n * @usageNotes\n *\n * In the following example, the dependency can be resolved\n * by the local injector when instantiating the class itself, but not\n * when instantiating a child.\n *\n * \n * \n *\n * @see `SkipSelf`\n * @see `Optional`\n *\n */\n (): any;\n new(): Self;\n}\n\n/**\n * Type of the Self metadata.\n *\n * @publicApi\n */\nexport interface Self {}\n\n/**\n * Self decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nexport const Self: SelfDecorator =\n // Disable tslint because `InternalInjectFlags` is a const enum which gets inlined.\n // tslint:disable-next-line: no-toplevel-property-access\n attachInjectFlag(makeParamDecorator('Self'), InternalInjectFlags.Self);\n\n\n/**\n * Type of the `SkipSelf` decorator / constructor function.\n *\n * @publicApi\n */\nexport interface SkipSelfDecorator {\n /**\n * Parameter decorator to be used on constructor parameters,\n * which tells the DI framework to start dependency resolution from the parent injector.\n * Resolution works upward through the injector hierarchy, so the local injector\n * is not checked for a provider.\n *\n * @usageNotes\n *\n * In the following example, the dependency can be resolved when\n * instantiating a child, but not when instantiating the class itself.\n *\n * \n * \n *\n * @see [Dependency Injection guide](guide/dependency-injection-in-action#skip).\n * @see `Self`\n * @see `Optional`\n *\n */\n (): any;\n new(): SkipSelf;\n}\n\n/**\n * Type of the `SkipSelf` metadata.\n *\n * @publicApi\n */\nexport interface SkipSelf {}\n\n/**\n * `SkipSelf` decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nexport const SkipSelf: SkipSelfDecorator =\n // Disable tslint because `InternalInjectFlags` is a const enum which gets inlined.\n // tslint:disable-next-line: no-toplevel-property-access\n attachInjectFlag(makeParamDecorator('SkipSelf'), InternalInjectFlags.SkipSelf);\n\n/**\n * Type of the `Host` decorator / constructor function.\n *\n * @publicApi\n */\nexport interface HostDecorator {\n /**\n * Parameter decorator on a view-provider parameter of a class constructor\n * that tells the DI framework to resolve the view by checking injectors of child\n * elements, and stop when reaching the host element of the current component.\n *\n * @usageNotes\n *\n * The following shows use with the `@Optional` decorator, and allows for a `null` result.\n *\n * \n * \n *\n * For an extended example, see [\"Dependency Injection\n * Guide\"](guide/dependency-injection-in-action#optional).\n */\n (): any;\n new(): Host;\n}\n\n/**\n * Type of the Host metadata.\n *\n * @publicApi\n */\nexport interface Host {}\n\n/**\n * Host decorator and metadata.\n *\n * @Annotation\n * @publicApi\n */\nexport const Host: HostDecorator =\n // Disable tslint because `InternalInjectFlags` is a const enum which gets inlined.\n // tslint:disable-next-line: no-toplevel-property-access\n attachInjectFlag(makeParamDecorator('Host'), InternalInjectFlags.Host);\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {CompilerFacade, getCompilerFacade, R3DependencyMetadataFacade, R3ResolvedDependencyType} from '../../compiler/compiler_facade';\nimport {Type} from '../../interface/type';\nimport {ReflectionCapabilities} from '../../reflection/reflection_capabilities';\nimport {Host, Inject, Optional, Self, SkipSelf} from '../metadata';\nimport {Attribute} from '../metadata_attr';\n\nlet _reflect: ReflectionCapabilities|null = null;\n\nexport function getReflect(): ReflectionCapabilities {\n return (_reflect = _reflect || new ReflectionCapabilities());\n}\n\nexport function reflectDependencies(type: Type): R3DependencyMetadataFacade[] {\n return convertDependencies(getReflect().parameters(type));\n}\n\nexport function convertDependencies(deps: any[]): R3DependencyMetadataFacade[] {\n const compiler = getCompilerFacade();\n return deps.map(dep => reflectDependency(compiler, dep));\n}\n\nfunction reflectDependency(compiler: CompilerFacade, dep: any|any[]): R3DependencyMetadataFacade {\n const meta: R3DependencyMetadataFacade = {\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: any): void {\n meta.resolved = compiler.R3ResolvedDependencyType.Token;\n meta.token = token;\n }\n\n if (Array.isArray(dep) && dep.length > 0) {\n for (let j = 0; j < dep.length; j++) {\n const param = dep[j];\n if (param === undefined) {\n // param may be undefined if type of dep is not set by ngtsc\n continue;\n }\n\n const 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 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 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\nimport {Type} from '../interface/type';\nimport {Component} from './directives';\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 */\nexport function resolveComponentResources(\n resourceResolver: (url: string) => (Promise}>)): Promise {\n // Store all promises which are fetching the resources.\n const componentResolved: Promise[] = [];\n\n // Cache so that we don't fetch the same resource more than once.\n const urlMap = new Map>();\n function cachedResourceResolve(url: string): Promise {\n let promise = urlMap.get(url);\n if (!promise) {\n const resp = resourceResolver(url);\n urlMap.set(url, promise = resp.then(unwrapResponse));\n }\n return promise;\n }\n\n componentResourceResolutionQueue.forEach((component: Component, type: Type) => {\n const promises: Promise[] = [];\n if (component.templateUrl) {\n promises.push(cachedResourceResolve(component.templateUrl).then((template) => {\n component.template = template;\n }));\n }\n const styleUrls = component.styleUrls;\n const styles = component.styles || (component.styles = []);\n const styleOffset = component.styles.length;\n styleUrls && styleUrls.forEach((styleUrl, index) => {\n styles.push(''); // pre-allocate array.\n promises.push(cachedResourceResolve(styleUrl).then((style) => {\n styles[styleOffset + index] = style;\n styleUrls.splice(styleUrls.indexOf(styleUrl), 1);\n if (styleUrls.length == 0) {\n component.styleUrls = undefined;\n }\n }));\n });\n const fullyResolved = Promise.all(promises).then(() => componentDefResolved(type));\n componentResolved.push(fullyResolved);\n });\n clearResolutionOfComponentResourcesQueue();\n return Promise.all(componentResolved).then(() => undefined);\n}\n\nlet componentResourceResolutionQueue = new Map, Component>();\n\n// Track when existing ɵcmp for a Type is waiting on resources.\nconst componentDefPendingResolution = new Set>();\n\nexport function maybeQueueResolutionOfComponentResources(type: Type, metadata: Component) {\n if (componentNeedsResolution(metadata)) {\n componentResourceResolutionQueue.set(type, metadata);\n componentDefPendingResolution.add(type);\n }\n}\n\nexport function isComponentDefPendingResolution(type: Type): boolean {\n return componentDefPendingResolution.has(type);\n}\n\nexport function componentNeedsResolution(component: Component): boolean {\n return !!(\n (component.templateUrl && !component.hasOwnProperty('template')) ||\n component.styleUrls && component.styleUrls.length);\n}\nexport function clearResolutionOfComponentResourcesQueue(): Map, Component> {\n const old = componentResourceResolutionQueue;\n componentResourceResolutionQueue = new Map();\n return old;\n}\n\nexport function restoreComponentResolutionQueue(queue: Map, Component>): void {\n componentDefPendingResolution.clear();\n queue.forEach((_, type) => componentDefPendingResolution.add(type));\n componentResourceResolutionQueue = queue;\n}\n\nexport function isComponentResourceResolutionQueueEmpty() {\n return componentResourceResolutionQueue.size === 0;\n}\n\nfunction unwrapResponse(response: string|{text(): Promise}): string|Promise {\n return typeof response == 'string' ? response : response.text();\n}\n\nfunction componentDefResolved(type: Type): void {\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 * @fileoverview\n * A module to facilitate use of a Trusted Types policy internally within\n * Angular. It lazily constructs the Trusted Types policy, providing helper\n * utilities for promoting strings to Trusted Types. When Trusted Types are not\n * available, strings are used as a fallback.\n * @security All use of this module is security-sensitive and should go through\n * security review.\n */\n\nimport {global} from '../global';\nimport {TrustedHTML, TrustedScript, TrustedScriptURL, TrustedTypePolicy, TrustedTypePolicyFactory} from './trusted_type_defs';\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 */\nlet policy: TrustedTypePolicy|null|undefined;\n\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 */\nfunction getPolicy(): TrustedTypePolicy|null {\n if (policy === undefined) {\n policy = null;\n if (global.trustedTypes) {\n try {\n policy = (global.trustedTypes as TrustedTypePolicyFactory).createPolicy('angular', {\n createHTML: (s: string) => s,\n createScript: (s: string) => s,\n createScriptURL: (s: string) => s,\n });\n } catch {\n // 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 return policy;\n}\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 */\nexport function trustedHTMLFromString(html: string): TrustedHTML|string {\n return getPolicy()?.createHTML(html) || html;\n}\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 */\nexport function trustedScriptFromString(script: string): TrustedScript|string {\n return getPolicy()?.createScript(script) || script;\n}\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 */\nexport function trustedScriptURLFromString(url: string): TrustedScriptURL|string {\n return getPolicy()?.createScriptURL(url) || url;\n}\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 */\nexport function newTrustedFunctionForDev(...args: string[]): Function {\n if (typeof ngDevMode === 'undefined') {\n throw new Error('newTrustedFunctionForDev should never be called in production');\n }\n if (!global.trustedTypes) {\n // In environments that don't support Trusted Types, fall back to the most\n // straightforward implementation:\n return new Function(...args);\n }\n\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 const fnArgs = args.slice(0, -1).join(',');\n const fnBody = args[args.length - 1];\n const body = `(function anonymous(${fnArgs}\n) { ${fnBody}\n})`;\n\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 const fn = global['eval'](trustedScriptFromString(body) as string) as Function;\n if (fn.bind === undefined) {\n // Workaround for a browser bug that only exists in Chrome 83, where passing\n // a TrustedScript to eval just returns the TrustedScript back without\n // evaluating it. In that case, fall back to the most straightforward\n // implementation:\n return new Function(...args);\n }\n\n // 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 fn.toString = () => body;\n // 2. When calling the resulting function, `this` should refer to `global`\n return fn.bind(global);\n\n // 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/**\n * @fileoverview\n * A module to facilitate use of a Trusted Types policy internally within\n * Angular specifically for bypassSecurityTrust* and custom sanitizers. It\n * lazily constructs the Trusted Types policy, providing helper utilities for\n * promoting strings to Trusted Types. When Trusted Types are not available,\n * strings are used as a fallback.\n * @security All use of this module is security-sensitive and should go through\n * security review.\n */\n\nimport {global} from '../global';\nimport {TrustedHTML, TrustedScript, TrustedScriptURL, TrustedTypePolicy, TrustedTypePolicyFactory} from './trusted_type_defs';\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 */\nlet policy: TrustedTypePolicy|null|undefined;\n\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 */\nfunction getPolicy(): TrustedTypePolicy|null {\n if (policy === undefined) {\n policy = null;\n if (global.trustedTypes) {\n try {\n policy = (global.trustedTypes as TrustedTypePolicyFactory)\n .createPolicy('angular#unsafe-bypass', {\n createHTML: (s: string) => s,\n createScript: (s: string) => s,\n createScriptURL: (s: string) => s,\n });\n } catch {\n // 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 return policy;\n}\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 it\n * is only passed strings that come directly from custom sanitizers or the\n * bypassSecurityTrust* functions.\n */\nexport function trustedHTMLFromStringBypass(html: string): TrustedHTML|string {\n return getPolicy()?.createHTML(html) || html;\n}\n\n/**\n * Unsafely promote a string to a TrustedScript, 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 it\n * is only passed strings that come directly from custom sanitizers or the\n * bypassSecurityTrust* functions.\n */\nexport function trustedScriptFromStringBypass(script: string): TrustedScript|string {\n return getPolicy()?.createScript(script) || script;\n}\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 it\n * is only passed strings that come directly from custom sanitizers or the\n * bypassSecurityTrust* functions.\n */\nexport function trustedScriptURLFromStringBypass(url: string): TrustedScriptURL|string {\n return getPolicy()?.createScriptURL(url) || url;\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n\nexport const enum BypassType {\n Url = 'URL',\n Html = 'HTML',\n ResourceUrl = 'ResourceURL',\n Script = 'Script',\n Style = 'Style',\n}\n\n/**\n * Marker interface for a value that's safe to use in a particular context.\n *\n * @publicApi\n */\nexport interface SafeValue {}\n\n/**\n * Marker interface for a value that's safe to use as HTML.\n *\n * @publicApi\n */\nexport interface SafeHtml extends SafeValue {}\n\n/**\n * Marker interface for a value that's safe to use as style (CSS).\n *\n * @publicApi\n */\nexport interface SafeStyle extends SafeValue {}\n\n/**\n * Marker interface for a value that's safe to use as JavaScript.\n *\n * @publicApi\n */\nexport interface SafeScript extends SafeValue {}\n\n/**\n * Marker interface for a value that's safe to use as a URL linking to a document.\n *\n * @publicApi\n */\nexport interface SafeUrl extends SafeValue {}\n\n/**\n * Marker interface for a value that's safe to use as a URL to load executable code from.\n *\n * @publicApi\n */\nexport interface SafeResourceUrl extends SafeValue {}\n\n\nabstract class SafeValueImpl implements SafeValue {\n constructor(public changingThisBreaksApplicationSecurity: string) {}\n\n abstract getTypeName(): string;\n\n toString() {\n return `SafeValue must use [property]=binding: ${this.changingThisBreaksApplicationSecurity}` +\n ` (see https://g.co/ng/security#xss)`;\n }\n}\n\nclass SafeHtmlImpl extends SafeValueImpl implements SafeHtml {\n getTypeName() {\n return BypassType.Html;\n }\n}\nclass SafeStyleImpl extends SafeValueImpl implements SafeStyle {\n getTypeName() {\n return BypassType.Style;\n }\n}\nclass SafeScriptImpl extends SafeValueImpl implements SafeScript {\n getTypeName() {\n return BypassType.Script;\n }\n}\nclass SafeUrlImpl extends SafeValueImpl implements SafeUrl {\n getTypeName() {\n return BypassType.Url;\n }\n}\nclass SafeResourceUrlImpl extends SafeValueImpl implements SafeResourceUrl {\n getTypeName() {\n return BypassType.ResourceUrl;\n }\n}\n\nexport function unwrapSafeValue(value: SafeValue): string;\nexport function unwrapSafeValue(value: T): T;\nexport function unwrapSafeValue(value: T|SafeValue): T {\n return value instanceof SafeValueImpl ? value.changingThisBreaksApplicationSecurity as any as T :\n value as any as T;\n}\n\n\nexport function allowSanitizationBypassAndThrow(\n value: any, type: BypassType.Html): value is SafeHtml;\nexport function allowSanitizationBypassAndThrow(\n value: any, type: BypassType.ResourceUrl): value is SafeResourceUrl;\nexport function allowSanitizationBypassAndThrow(\n value: any, type: BypassType.Script): value is SafeScript;\nexport function allowSanitizationBypassAndThrow(\n value: any, type: BypassType.Style): value is SafeStyle;\nexport function allowSanitizationBypassAndThrow(value: any, type: BypassType.Url): value is SafeUrl;\nexport function allowSanitizationBypassAndThrow(value: any, type: BypassType): boolean;\nexport function allowSanitizationBypassAndThrow(value: any, type: BypassType): boolean {\n const actualType = getSanitizationBypassType(value);\n if (actualType != null && actualType !== type) {\n // Allow ResourceURLs in URL contexts, they are strictly more trusted.\n if (actualType === BypassType.ResourceUrl && type === BypassType.Url) return true;\n throw new Error(\n `Required a safe ${type}, got a ${actualType} (see https://g.co/ng/security#xss)`);\n }\n return actualType === type;\n}\n\nexport function getSanitizationBypassType(value: any): BypassType|null {\n return value instanceof SafeValueImpl && value.getTypeName() as BypassType || null;\n}\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 */\nexport function bypassSanitizationTrustHtml(trustedHtml: string): SafeHtml {\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 */\nexport function bypassSanitizationTrustStyle(trustedStyle: string): SafeStyle {\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 */\nexport function bypassSanitizationTrustScript(trustedScript: string): SafeScript {\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 */\nexport function bypassSanitizationTrustUrl(trustedUrl: string): SafeUrl {\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 */\nexport function bypassSanitizationTrustResourceUrl(trustedResourceUrl: string): SafeResourceUrl {\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\nimport {trustedHTMLFromString} from '../util/security/trusted_types';\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 */\nexport function getInertBodyHelper(defaultDoc: Document): InertBodyHelper {\n const inertDocumentHelper = new InertDocumentHelper(defaultDoc);\n return isDOMParserAvailable() ? new DOMParserHelper(inertDocumentHelper) : inertDocumentHelper;\n}\n\nexport interface InertBodyHelper {\n /**\n * Get an inert DOM element containing DOM created from the dirty HTML string provided.\n */\n getInertBodyElement: (html: string) => HTMLElement | null;\n}\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 */\nclass DOMParserHelper implements InertBodyHelper {\n constructor(private inertDocumentHelper: InertBodyHelper) {}\n\n getInertBodyElement(html: string): HTMLElement|null {\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 `` do not get hoisted to the\n // `` tag. Note that the `` tag is closed implicitly to prevent unclosed tags\n // in `html` from consuming the otherwise explicit `` tag.\n html = '' + html;\n try {\n const body = new window.DOMParser()\n .parseFromString(trustedHTMLFromString(html) as string, 'text/html')\n .body as HTMLBodyElement;\n if (body === null) {\n // In some browsers (e.g. Mozilla/5.0 iPad AppleWebKit Mobile) the `body` property only\n // becomes available in the following tick of the JS engine. In that case we fall back to\n // the `inertDocumentHelper` instead.\n return this.inertDocumentHelper.getInertBodyElement(html);\n }\n body.removeChild(body.firstChild!);\n return body;\n } catch {\n return null;\n }\n }\n}\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 */\nclass InertDocumentHelper implements InertBodyHelper {\n private inertDocument: Document;\n\n constructor(private defaultDoc: Document) {\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 const inertHtml = this.inertDocument.createElement('html');\n this.inertDocument.appendChild(inertHtml);\n const inertBodyElement = this.inertDocument.createElement('body');\n inertHtml.appendChild(inertBodyElement);\n }\n }\n\n getInertBodyElement(html: string): HTMLElement|null {\n // Prefer using