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{"version":3,"file":"_module-chunk.mjs","sources":["../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/packages/common/http/src/headers.ts","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/packages/common/http/src/context.ts","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/packages/common/http/src/params.ts","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/packages/common/http/src/request.ts","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/packages/common/http/src/response.ts","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/packages/common/http/src/fetch.ts","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/packages/common/http/src/xhr.ts","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/packages/common/http/src/interceptor.ts","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/packages/common/http/src/backend.ts","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/packages/common/http/src/client.ts","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/packages/common/http/src/jsonp.ts","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/packages/common/http/src/xsrf.ts","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/packages/common/http/src/provider.ts","../../../../../k8-fastbuild-ST-fdfa778d11ba/bin/packages/common/http/src/module.ts"],"sourcesContent":["/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.dev/license\n */\n\ninterface Update {\n name: string;\n value?: string | string[];\n op: 'a' | 's' | 'd';\n}\n\n/**\n * Represents the header configuration options for an HTTP request.\n * Instances are immutable. Modifying methods return a cloned\n * instance with the change. The original object is never changed.\n *\n * @see [Setting request headers](guide/http/making-requests#setting-request-headers)\n *\n * @publicApi\n */\nexport class HttpHeaders {\n /**\n * Internal map of lowercase header names to values.\n */\n private headers!: Map<string, string[]>;\n\n /**\n * Internal map of lowercased header names to the normalized\n * form of the name (the form seen first).\n */\n private normalizedNames: Map<string, string> = new Map();\n\n /**\n * Complete the lazy initialization of this object (needed before reading).\n */\n private lazyInit!: HttpHeaders | Function | null;\n\n /**\n * Queued updates to be materialized the next initialization.\n */\n private lazyUpdate: Update[] | null = null;\n\n /** Constructs a new HTTP header object with the given values.*/\n\n constructor(\n headers?: string | {[name: string]: string | number | (string | number)[]} | Headers,\n ) {\n if (!headers) {\n this.headers = new Map<string, string[]>();\n } else if (typeof headers === 'string') {\n this.lazyInit = () => {\n this.headers = new Map<string, string[]>();\n headers.split('\\n').forEach((line) => {\n const index = line.indexOf(':');\n if (index > 0) {\n const name = line.slice(0, index);\n const value = line.slice(index + 1).trim();\n this.addHeaderEntry(name, value);\n }\n });\n };\n } else if (typeof Headers !== 'undefined' && headers instanceof Headers) {\n this.headers = new Map<string, string[]>();\n headers.forEach((value: string, name: string) => {\n this.addHeaderEntry(name, value);\n });\n } else {\n this.lazyInit = () => {\n if (typeof ngDevMode === 'undefined' || ngDevMode) {\n assertValidHeaders(headers);\n }\n this.headers = new Map<string, string[]>();\n Object.entries(headers).forEach(([name, values]) => {\n this.setHeaderEntries(name, values);\n });\n };\n }\n }\n\n /**\n * Checks for existence of a given header.\n *\n * @param name The header name to check for existence.\n *\n * @returns True if the header exists, false otherwise.\n */\n has(name: string): boolean {\n this.init();\n\n return this.headers.has(name.toLowerCase());\n }\n\n /**\n * Retrieves the first value of a given header.\n *\n * @param name The header name.\n *\n * @returns The value string if the header exists, null otherwise\n */\n get(name: string): string | null {\n this.init();\n\n const values = this.headers.get(name.toLowerCase());\n return values && values.length > 0 ? values[0] : null;\n }\n\n /**\n * Retrieves the names of the headers.\n *\n * @returns A list of header names.\n */\n keys(): string[] {\n this.init();\n\n return Array.from(this.normalizedNames.values());\n }\n\n /**\n * Retrieves a list of values for a given header.\n *\n * @param name The header name from which to retrieve values.\n *\n * @returns A string of values if the header exists, null otherwise.\n */\n getAll(name: string): string[] | null {\n this.init();\n\n return this.headers.get(name.toLowerCase()) || null;\n }\n\n /**\n * Appends a new value to the existing set of values for a header\n * and returns them in a clone of the original instance.\n *\n * @param name The header name for which to append the values.\n * @param value The value to append.\n *\n * @returns A clone of the HTTP headers object with the value appended to the given header.\n */\n\n append(name: string, value: string | string[]): HttpHeaders {\n return this.clone({name, value, op: 'a'});\n }\n /**\n * Sets or modifies a value for a given header in a clone of the original instance.\n * If the header already exists, its value is replaced with the given value\n * in the returned object.\n *\n * @param name The header name.\n * @param value The value or values to set or override for the given header.\n *\n * @returns A clone of the HTTP headers object with the newly set header value.\n */\n set(name: string, value: string | string[]): HttpHeaders {\n return this.clone({name, value, op: 's'});\n }\n /**\n * Deletes values for a given header in a clone of the original instance.\n *\n * @param name The header name.\n * @param value The value or values to delete for the given header.\n *\n * @returns A clone of the HTTP headers object with the given value deleted.\n */\n delete(name: string, value?: string | string[]): HttpHeaders {\n return this.clone({name, value, op: 'd'});\n }\n\n private maybeSetNormalizedName(name: string, lcName: string): void {\n if (!this.normalizedNames.has(lcName)) {\n this.normalizedNames.set(lcName, name);\n }\n }\n\n private init(): void {\n if (!!this.lazyInit) {\n if (this.lazyInit instanceof HttpHeaders) {\n this.copyFrom(this.lazyInit);\n } else {\n this.lazyInit();\n }\n this.lazyInit = null;\n if (!!this.lazyUpdate) {\n this.lazyUpdate.forEach((update) => this.applyUpdate(update));\n this.lazyUpdate = null;\n }\n }\n }\n\n private copyFrom(other: HttpHeaders) {\n other.init();\n Array.from(other.headers.keys()).forEach((key) => {\n this.headers.set(key, other.headers.get(key)!);\n this.normalizedNames.set(key, other.normalizedNames.get(key)!);\n });\n }\n\n private clone(update: Update): HttpHeaders {\n const clone = new HttpHeaders();\n clone.lazyInit = !!this.lazyInit && this.lazyInit instanceof HttpHeaders ? this.lazyInit : this;\n clone.lazyUpdate = (this.lazyUpdate || []).concat([update]);\n return clone;\n }\n\n private applyUpdate(update: Update): void {\n const key = update.name.toLowerCase();\n switch (update.op) {\n case 'a':\n case 's':\n let value = update.value!;\n if (typeof value === 'string') {\n value = [value];\n }\n if (value.length === 0) {\n return;\n }\n this.maybeSetNormalizedName(update.name, key);\n const base = (update.op === 'a' ? this.headers.get(key) : undefined) || [];\n base.push(...value);\n this.headers.set(key, base);\n break;\n case 'd':\n const toDelete = update.value as string | undefined;\n if (!toDelete) {\n this.headers.delete(key);\n this.normalizedNames.delete(key);\n } else {\n let existing = this.headers.get(key);\n if (!existing) {\n return;\n }\n existing = existing.filter((value) => toDelete.indexOf(value) === -1);\n if (existing.length === 0) {\n this.headers.delete(key);\n this.normalizedNames.delete(key);\n } else {\n this.headers.set(key, existing);\n }\n }\n break;\n }\n }\n\n private addHeaderEntry(name: string, value: string) {\n const key = name.toLowerCase();\n this.maybeSetNormalizedName(name, key);\n if (this.headers.has(key)) {\n this.headers.get(key)!.push(value);\n } else {\n this.headers.set(key, [value]);\n }\n }\n\n private setHeaderEntries(name: string, values: any) {\n const headerValues = (Array.isArray(values) ? values : [values]).map((value) =>\n value.toString(),\n );\n const key = name.toLowerCase();\n this.headers.set(key, headerValues);\n this.maybeSetNormalizedName(name, key);\n }\n\n /**\n * @internal\n */\n forEach(fn: (name: string, values: string[]) => void) {\n this.init();\n Array.from(this.normalizedNames.keys()).forEach((key) =>\n fn(this.normalizedNames.get(key)!, this.headers.get(key)!),\n );\n }\n}\n\n/**\n * Verifies that the headers object has the right shape: the values\n * must be either strings, numbers or arrays. Throws an error if an invalid\n * header value is present.\n */\nfunction assertValidHeaders(\n headers: Record<string, unknown> | Headers,\n): asserts headers is Record<string, string | string[] | number | number[]> {\n for (const [key, value] of Object.entries(headers)) {\n if (!(typeof value === 'string' || typeof value === 'number') && !Array.isArray(value)) {\n throw new Error(\n `Unexpected value of the \\`${key}\\` header provided. ` +\n `Expecting either a string, a number or an array, but got: \\`${value}\\`.`,\n );\n }\n }\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.dev/license\n */\n\n/**\n * A token used to manipulate and access values stored in `HttpContext`.\n *\n * @see [Request and response metadata](guide/http/interceptors#request-and-response-metadata)\n *\n * @publicApi\n */\nexport class HttpContextToken<T> {\n constructor(public readonly defaultValue: () => T) {}\n}\n\n/**\n * Http context stores arbitrary user defined values and ensures type safety without\n * actually knowing the types. It is backed by a `Map` and guarantees that keys do not clash.\n *\n * This context is mutable and is shared between cloned requests unless explicitly specified.\n *\n * @usageNotes\n *\n * ### Usage Example\n *\n * ```ts\n * // inside cache.interceptors.ts\n * export const IS_CACHE_ENABLED = new HttpContextToken<boolean>(() => false);\n *\n * export class CacheInterceptor implements HttpInterceptor {\n *\n * intercept(req: HttpRequest<any>, delegate: HttpHandler): Observable<HttpEvent<any>> {\n * if (req.context.get(IS_CACHE_ENABLED) === true) {\n * return ...;\n * }\n * return delegate.handle(req);\n * }\n * }\n *\n * // inside a service\n *\n * this.httpClient.get('/api/weather', {\n * context: new HttpContext().set(IS_CACHE_ENABLED, true)\n * }).subscribe(...);\n * ```\n *\n * @see [Request and response metadata](guide/http/interceptors#request-and-response-metadata)\n *\n * @publicApi\n */\nexport class HttpContext {\n private readonly map = new Map<HttpContextToken<unknown>, unknown>();\n\n /**\n * Store a value in the context. If a value is already present it will be overwritten.\n *\n * @param token The reference to an instance of `HttpContextToken`.\n * @param value The value to store.\n *\n * @returns A reference to itself for easy chaining.\n */\n set<T>(token: HttpContextToken<T>, value: T): HttpContext {\n this.map.set(token, value);\n return this;\n }\n\n /**\n * Retrieve the value associated with the given token.\n *\n * @param token The reference to an instance of `HttpContextToken`.\n *\n * @returns The stored value or default if one is defined.\n */\n get<T>(token: HttpContextToken<T>): T {\n if (!this.map.has(token)) {\n this.map.set(token, token.defaultValue());\n }\n return this.map.get(token) as T;\n }\n\n /**\n * Delete the value associated with the given token.\n *\n * @param token The reference to an instance of `HttpContextToken`.\n *\n * @returns A reference to itself for easy chaining.\n */\n delete(token: HttpContextToken<unknown>): HttpContext {\n this.map.delete(token);\n return this;\n }\n\n /**\n * Checks for existence of a given token.\n *\n * @param token The reference to an instance of `HttpContextToken`.\n *\n * @returns True if the token exists, false otherwise.\n */\n has(token: HttpContextToken<unknown>): boolean {\n return this.map.has(token);\n }\n\n /**\n * @returns a list of tokens currently stored in the context.\n */\n keys(): IterableIterator<HttpContextToken<unknown>> {\n return this.map.keys();\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.dev/license\n */\n\nimport {ɵRuntimeError as RuntimeError} from '@angular/core';\n\nimport {RuntimeErrorCode} from './errors';\n\n/**\n * A codec for encoding and decoding parameters in URLs.\n *\n * Used by `HttpParams`.\n *\n * @see [Custom parameter encoding](guide/http/making-requests#custom-parameter-encoding)\n *\n * @publicApi\n **/\nexport interface HttpParameterCodec {\n encodeKey(key: string): string;\n encodeValue(value: string): string;\n\n decodeKey(key: string): string;\n decodeValue(value: string): string;\n}\n\n/**\n * Provides encoding and decoding of URL parameter and query-string values.\n *\n * Serializes and parses URL parameter keys and values to encode and decode them.\n * If you pass URL query parameters without encoding,\n * the query parameters can be misinterpreted at the receiving end.\n *\n *\n * @publicApi\n */\nexport class HttpUrlEncodingCodec implements HttpParameterCodec {\n /**\n * Encodes a key name for a URL parameter or query-string.\n * @param key The key name.\n * @returns The encoded key name.\n */\n encodeKey(key: string): string {\n return standardEncoding(key);\n }\n\n /**\n * Encodes the value of a URL parameter or query-string.\n * @param value The value.\n * @returns The encoded value.\n */\n encodeValue(value: string): string {\n return standardEncoding(value);\n }\n\n /**\n * Decodes an encoded URL parameter or query-string key.\n * @param key The encoded key name.\n * @returns The decoded key name.\n */\n decodeKey(key: string): string {\n return decodeURIComponent(key);\n }\n\n /**\n * Decodes an encoded URL parameter or query-string value.\n * @param value The encoded value.\n * @returns The decoded value.\n */\n decodeValue(value: string) {\n return decodeURIComponent(value);\n }\n}\n\nfunction paramParser(rawParams: string, codec: HttpParameterCodec): Map<string, string[]> {\n const map = new Map<string, string[]>();\n if (rawParams.length > 0) {\n // The `window.location.search` can be used while creating an instance of the `HttpParams` class\n // (e.g. `new HttpParams({ fromString: window.location.search })`). The `window.location.search`\n // may start with the `?` char, so we strip it if it's present.\n const params: string[] = rawParams.replace(/^\\?/, '').split('&');\n params.forEach((param: string) => {\n const eqIdx = param.indexOf('=');\n const [key, val]: string[] =\n eqIdx == -1\n ? [codec.decodeKey(param), '']\n : [codec.decodeKey(param.slice(0, eqIdx)), codec.decodeValue(param.slice(eqIdx + 1))];\n const list = map.get(key) || [];\n list.push(val);\n map.set(key, list);\n });\n }\n return map;\n}\n\n/**\n * Encode input string with standard encodeURIComponent and then un-encode specific characters.\n */\nconst STANDARD_ENCODING_REGEX = /%(\\d[a-f0-9])/gi;\nconst STANDARD_ENCODING_REPLACEMENTS: {[x: string]: string} = {\n '40': '@',\n '3A': ':',\n '24': '$',\n '2C': ',',\n '3B': ';',\n '3D': '=',\n '3F': '?',\n '2F': '/',\n};\n\nfunction standardEncoding(v: string): string {\n return encodeURIComponent(v).replace(\n STANDARD_ENCODING_REGEX,\n (s, t) => STANDARD_ENCODING_REPLACEMENTS[t] ?? s,\n );\n}\n\nfunction valueToString(value: string | number | boolean): string {\n return `${value}`;\n}\n\ninterface Update {\n param: string;\n value?: string | number | boolean;\n op: 'a' | 'd' | 's';\n}\n\n/**\n * Options used to construct an `HttpParams` instance.\n *\n * @see [Setting URL parameters](guide/http/making-requests#setting-url-parameters)\n * @see [Custom parameter encoding](guide/http/making-requests#custom-parameter-encoding)\n *\n * @publicApi\n */\nexport interface HttpParamsOptions {\n /**\n * String representation of the HTTP parameters in URL-query-string format.\n * Mutually exclusive with `fromObject`.\n */\n fromString?: string;\n\n /** Object map of the HTTP parameters. Mutually exclusive with `fromString`. */\n fromObject?: {\n [param: string]: string | number | boolean | ReadonlyArray<string | number | boolean>;\n };\n\n /** Encoding codec used to parse and serialize the parameters. */\n encoder?: HttpParameterCodec;\n}\n\n/**\n * An HTTP request/response body that represents serialized parameters,\n * per the MIME type `application/x-www-form-urlencoded`.\n *\n * This class is immutable; all mutation operations return a new instance.\n *\n * @see [Setting URL parameters](guide/http/making-requests#setting-url-parameters)\n *\n * @publicApi\n */\nexport class HttpParams {\n private map: Map<string, string[]> | null;\n private encoder: HttpParameterCodec;\n private updates: Update[] | null = null;\n private cloneFrom: HttpParams | null = null;\n\n constructor(options: HttpParamsOptions = {} as HttpParamsOptions) {\n this.encoder = options.encoder || new HttpUrlEncodingCodec();\n if (options.fromString) {\n if (options.fromObject) {\n throw new RuntimeError(\n RuntimeErrorCode.CANNOT_SPECIFY_BOTH_FROM_STRING_AND_FROM_OBJECT,\n ngDevMode && 'Cannot specify both fromString and fromObject.',\n );\n }\n this.map = paramParser(options.fromString, this.encoder);\n } else if (!!options.fromObject) {\n this.map = new Map<string, string[]>();\n Object.keys(options.fromObject).forEach((key) => {\n const value = (options.fromObject as any)[key];\n // convert the values to strings\n const values = Array.isArray(value) ? value.map(valueToString) : [valueToString(value)];\n this.map!.set(key, values);\n });\n } else {\n this.map = null;\n }\n }\n\n /**\n * Reports whether the body includes one or more values for a given parameter.\n * @param param The parameter name.\n * @returns True if the parameter has one or more values,\n * false if it has no value or is not present.\n */\n has(param: string): boolean {\n this.init();\n return this.map!.has(param);\n }\n\n /**\n * Retrieves the first value for a parameter.\n * @param param The parameter name.\n * @returns The first value of the given parameter,\n * or `null` if the parameter is not present.\n */\n get(param: string): string | null {\n this.init();\n const res = this.map!.get(param);\n return !!res ? res[0] : null;\n }\n\n /**\n * Retrieves all values for a parameter.\n * @param param The parameter name.\n * @returns All values in a string array,\n * or `null` if the parameter not present.\n */\n getAll(param: string): string[] | null {\n this.init();\n return this.map!.get(param) || null;\n }\n\n /**\n * Retrieves all the parameters for this body.\n * @returns The parameter names in a string array.\n */\n keys(): string[] {\n this.init();\n return Array.from(this.map!.keys());\n }\n\n /**\n * Appends a new value to existing values for a parameter.\n * @param param The parameter name.\n * @param value The new value to add.\n * @return A new body with the appended value.\n */\n append(param: string, value: string | number | boolean): HttpParams {\n return this.clone({param, value, op: 'a'});\n }\n\n /**\n * Constructs a new body with appended values for the given parameter name.\n * @param params parameters and values\n * @return A new body with the new value.\n */\n appendAll(params: {\n [param: string]: string | number | boolean | ReadonlyArray<string | number | boolean>;\n }): HttpParams {\n const updates: Update[] = [];\n Object.keys(params).forEach((param) => {\n const value = params[param];\n if (Array.isArray(value)) {\n value.forEach((_value) => {\n updates.push({param, value: _value, op: 'a'});\n });\n } else {\n updates.push({param, value: value as string | number | boolean, op: 'a'});\n }\n });\n return this.clone(updates);\n }\n\n /**\n * Replaces the value for a parameter.\n * @param param The parameter name.\n * @param value The new value.\n * @return A new body with the new value.\n */\n set(param: string, value: string | number | boolean): HttpParams {\n return this.clone({param, value, op: 's'});\n }\n\n /**\n * Removes a given value or all values from a parameter.\n * @param param The parameter name.\n * @param value The value to remove, if provided.\n * @return A new body with the given value removed, or with all values\n * removed if no value is specified.\n */\n delete(param: string, value?: string | number | boolean): HttpParams {\n return this.clone({param, value, op: 'd'});\n }\n\n /**\n * Serializes the body to an encoded string, where key-value pairs (separated by `=`) are\n * separated by `&`s.\n */\n toString(): string {\n this.init();\n return (\n this.keys()\n .map((key) => {\n const eKey = this.encoder.encodeKey(key);\n // `a: ['1']` produces `'a=1'`\n // `b: []` produces `''`\n // `c: ['1', '2']` produces `'c=1&c=2'`\n return this.map!.get(key)!\n .map((value) => eKey + '=' + this.encoder.encodeValue(value))\n .join('&');\n })\n // filter out empty values because `b: []` produces `''`\n // which results in `a=1&&c=1&c=2` instead of `a=1&c=1&c=2` if we don't\n .filter((param) => param !== '')\n .join('&')\n );\n }\n\n private clone(update: Update | Update[]): HttpParams {\n const clone = new HttpParams({encoder: this.encoder} as HttpParamsOptions);\n clone.cloneFrom = this.cloneFrom || this;\n clone.updates = (this.updates || []).concat(update);\n return clone;\n }\n\n private init() {\n if (this.map === null) {\n this.map = new Map<string, string[]>();\n }\n if (this.cloneFrom !== null) {\n this.cloneFrom.init();\n this.cloneFrom.keys().forEach((key) => this.map!.set(key, this.cloneFrom!.map!.get(key)!));\n this.updates!.forEach((update) => {\n switch (update.op) {\n case 'a':\n case 's':\n const base = (update.op === 'a' ? this.map!.get(update.param) : undefined) || [];\n base.push(valueToString(update.value!));\n this.map!.set(update.param, base);\n break;\n case 'd':\n if (update.value !== undefined) {\n let base = this.map!.get(update.param) || [];\n const idx = base.indexOf(valueToString(update.value));\n if (idx !== -1) {\n base.splice(idx, 1);\n }\n if (base.length > 0) {\n this.map!.set(update.param, base);\n } else {\n this.map!.delete(update.param);\n }\n } else {\n this.map!.delete(update.param);\n break;\n }\n }\n });\n this.cloneFrom = this.updates = null;\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.dev/license\n */\nimport {ɵRuntimeError as RuntimeError} from '@angular/core';\nimport {HttpContext} from './context';\nimport {HttpHeaders} from './headers';\nimport {HttpParams} from './params';\nimport {RuntimeErrorCode} from './errors';\n\n/**\n * Construction interface for `HttpRequest`s.\n *\n * All values are optional and will override default values if provided.\n */\ninterface HttpRequestInit {\n headers?: HttpHeaders;\n context?: HttpContext;\n reportProgress?: boolean;\n params?: HttpParams;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n transferCache?: {includeHeaders?: string[]} | boolean;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n timeout?: number;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n}\n\n/**\n * Determine whether the given HTTP method may include a body.\n */\nfunction mightHaveBody(method: string): boolean {\n switch (method) {\n case 'DELETE':\n case 'GET':\n case 'HEAD':\n case 'OPTIONS':\n case 'JSONP':\n return false;\n default:\n return true;\n }\n}\n\n/**\n * Safely assert whether the given value is an ArrayBuffer.\n *\n * In some execution environments ArrayBuffer is not defined.\n */\nfunction isArrayBuffer(value: any): value is ArrayBuffer {\n return typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer;\n}\n\n/**\n * Safely assert whether the given value is a Blob.\n *\n * In some execution environments Blob is not defined.\n */\nfunction isBlob(value: any): value is Blob {\n return typeof Blob !== 'undefined' && value instanceof Blob;\n}\n\n/**\n * Safely assert whether the given value is a FormData instance.\n *\n * In some execution environments FormData is not defined.\n */\nfunction isFormData(value: any): value is FormData {\n return typeof FormData !== 'undefined' && value instanceof FormData;\n}\n\n/**\n * Safely assert whether the given value is a URLSearchParams instance.\n *\n * In some execution environments URLSearchParams is not defined.\n */\nfunction isUrlSearchParams(value: any): value is URLSearchParams {\n return typeof URLSearchParams !== 'undefined' && value instanceof URLSearchParams;\n}\n\n/**\n * `Content-Type` is an HTTP header used to indicate the media type\n * (also known as MIME type) of the resource being sent to the client\n * or received from the server.\n */\nexport const CONTENT_TYPE_HEADER = 'Content-Type';\n\n/**\n * The `Accept` header is an HTTP request header that indicates the media types\n * (or content types) the client is willing to receive from the server.\n */\nexport const ACCEPT_HEADER = 'Accept';\n\n/**\n * `text/plain` is a content type used to indicate that the content being\n * sent is plain text with no special formatting or structured data\n * like HTML, XML, or JSON.\n */\nexport const TEXT_CONTENT_TYPE = 'text/plain';\n\n/**\n * `application/json` is a content type used to indicate that the content\n * being sent is in the JSON format.\n */\nexport const JSON_CONTENT_TYPE = 'application/json';\n\n/**\n * `application/json, text/plain, *\\/*` is a content negotiation string often seen in the\n * Accept header of HTTP requests. It indicates the types of content the client is willing\n * to accept from the server, with a preference for `application/json` and `text/plain`,\n * but also accepting any other type (*\\/*).\n */\nexport const ACCEPT_HEADER_VALUE = `${JSON_CONTENT_TYPE}, ${TEXT_CONTENT_TYPE}, */*`;\n\n/**\n * An outgoing HTTP request with an optional typed body.\n *\n * `HttpRequest` represents an outgoing request, including URL, method,\n * headers, body, and other request configuration options. Instances should be\n * assumed to be immutable. To modify a `HttpRequest`, the `clone`\n * method should be used.\n *\n * @publicApi\n */\nexport class HttpRequest<T> {\n /**\n * The request body, or `null` if one isn't set.\n *\n * Bodies are not enforced to be immutable, as they can include a reference to any\n * user-defined data type. However, interceptors should take care to preserve\n * idempotence by treating them as such.\n */\n readonly body: T | null = null;\n\n /**\n * Outgoing headers for this request.\n */\n readonly headers!: HttpHeaders;\n\n /**\n * Shared and mutable context that can be used by interceptors\n */\n readonly context!: HttpContext;\n\n /**\n * Whether this request should be made in a way that exposes progress events.\n *\n * Progress events are expensive (change detection runs on each event) and so\n * they should only be requested if the consumer intends to monitor them.\n *\n * Note: The `FetchBackend` doesn't support progress report on uploads.\n */\n readonly reportProgress: boolean = false;\n\n /**\n * Whether this request should be sent with outgoing credentials (cookies).\n */\n readonly withCredentials: boolean = false;\n\n /**\n * The credentials mode of the request, which determines how cookies and HTTP authentication are handled.\n * This can affect whether cookies are sent with the request, and how authentication is handled.\n */\n readonly credentials!: RequestCredentials;\n\n /**\n * When using the fetch implementation and set to `true`, the browser will not abort the associated request if the page that initiated it is unloaded before the request is complete.\n */\n readonly keepalive: boolean = false;\n\n /**\n * Controls how the request will interact with the browser's HTTP cache.\n * This affects whether a response is retrieved from the cache, how it is stored, or if it bypasses the cache altogether.\n */\n readonly cache!: RequestCache;\n\n /**\n * Indicates the relative priority of the request. This may be used by the browser to decide the order in which requests are dispatched and resources fetched.\n */\n readonly priority!: RequestPriority;\n\n /**\n * The mode of the request, which determines how the request will interact with the browser's security model.\n * This can affect things like CORS (Cross-Origin Resource Sharing) and same-origin policies.\n */\n readonly mode!: RequestMode;\n\n /**\n * The redirect mode of the request, which determines how redirects are handled.\n * This can affect whether the request follows redirects automatically, or if it fails when a redirect occurs.\n */\n readonly redirect!: RequestRedirect;\n\n /**\n * The referrer of the request, which can be used to indicate the origin of the request.\n * This is useful for security and analytics purposes.\n * Value is a same-origin URL, \"about:client\", or the empty string, to set request's referrer.\n */\n readonly referrer!: string;\n\n /**\n * The integrity metadata of the request, which can be used to ensure the request is made with the expected content.\n * A cryptographic hash of the resource to be fetched by request\n */\n readonly integrity!: string;\n\n /**\n * The referrer policy of the request, which can be used to specify the referrer information to be included with the request.\n * This can affect the amount of referrer information sent with the request, and can be used to enhance privacy and security.\n */\n readonly referrerPolicy!: ReferrerPolicy;\n\n /**\n * The expected response type of the server.\n *\n * This is used to parse the response appropriately before returning it to\n * the requestee.\n */\n readonly responseType: 'arraybuffer' | 'blob' | 'json' | 'text' = 'json';\n\n /**\n * The outgoing HTTP request method.\n */\n readonly method: string;\n\n /**\n * Outgoing URL parameters.\n *\n * To pass a string representation of HTTP parameters in the URL-query-string format,\n * the `HttpParamsOptions`' `fromString` may be used. For example:\n *\n * ```ts\n * new HttpParams({fromString: 'angular=awesome'})\n * ```\n */\n readonly params!: HttpParams;\n\n /**\n * The outgoing URL with all URL parameters set.\n */\n readonly urlWithParams: string;\n\n /**\n * The HttpTransferCache option for the request\n */\n readonly transferCache?: {includeHeaders?: string[]} | boolean;\n\n /**\n * The timeout for the backend HTTP request in ms.\n */\n readonly timeout?: number;\n\n constructor(\n method: 'GET' | 'HEAD',\n url: string,\n init?: {\n headers?: HttpHeaders;\n context?: HttpContext;\n reportProgress?: boolean;\n params?: HttpParams;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n /**\n * This property accepts either a boolean to enable/disable transferring cache for eligible\n * requests performed using `HttpClient`, or an object, which allows to configure cache\n * parameters, such as which headers should be included (no headers are included by default).\n *\n * Setting this property will override the options passed to `provideClientHydration()` for this\n * particular request\n */\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n );\n constructor(\n method: 'DELETE' | 'JSONP' | 'OPTIONS',\n url: string,\n init?: {\n headers?: HttpHeaders;\n context?: HttpContext;\n reportProgress?: boolean;\n params?: HttpParams;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n timeout?: number;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n },\n );\n constructor(\n method: 'POST',\n url: string,\n body: T | null,\n init?: {\n headers?: HttpHeaders;\n context?: HttpContext;\n reportProgress?: boolean;\n params?: HttpParams;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n /**\n * This property accepts either a boolean to enable/disable transferring cache for eligible\n * requests performed using `HttpClient`, or an object, which allows to configure cache\n * parameters, such as which headers should be included (no headers are included by default).\n *\n * Setting this property will override the options passed to `provideClientHydration()` for this\n * particular request\n */\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n );\n constructor(\n method: 'PUT' | 'PATCH',\n url: string,\n body: T | null,\n init?: {\n headers?: HttpHeaders;\n context?: HttpContext;\n reportProgress?: boolean;\n params?: HttpParams;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n timeout?: number;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n },\n );\n constructor(\n method: string,\n url: string,\n body: T | null,\n init?: {\n headers?: HttpHeaders;\n context?: HttpContext;\n reportProgress?: boolean;\n params?: HttpParams;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n /**\n * This property accepts either a boolean to enable/disable transferring cache for eligible\n * requests performed using `HttpClient`, or an object, which allows to configure cache\n * parameters, such as which headers should be included (no headers are included by default).\n *\n * Setting this property will override the options passed to `provideClientHydration()` for this\n * particular request\n */\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n );\n constructor(\n method: string,\n readonly url: string,\n third?:\n | T\n | {\n headers?: HttpHeaders;\n context?: HttpContext;\n reportProgress?: boolean;\n params?: HttpParams;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n }\n | null,\n fourth?: {\n headers?: HttpHeaders;\n context?: HttpContext;\n reportProgress?: boolean;\n params?: HttpParams;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ) {\n this.method = method.toUpperCase();\n // Next, need to figure out which argument holds the HttpRequestInit\n // options, if any.\n let options: HttpRequestInit | undefined;\n\n // Check whether a body argument is expected. The only valid way to omit\n // the body argument is to use a known no-body method like GET.\n if (mightHaveBody(this.method) || !!fourth) {\n // Body is the third argument, options are the fourth.\n this.body = third !== undefined ? (third as T) : null;\n options = fourth;\n } else {\n // No body required, options are the third argument. The body stays null.\n options = third as HttpRequestInit;\n }\n\n // If options have been passed, interpret them.\n if (options) {\n // Normalize reportProgress and withCredentials.\n this.reportProgress = !!options.reportProgress;\n this.withCredentials = !!options.withCredentials;\n this.keepalive = !!options.keepalive;\n\n // Override default response type of 'json' if one is provided.\n if (!!options.responseType) {\n this.responseType = options.responseType;\n }\n\n // Override headers if they're provided.\n if (options.headers) {\n this.headers = options.headers;\n }\n\n if (options.context) {\n this.context = options.context;\n }\n\n if (options.params) {\n this.params = options.params;\n }\n\n if (options.priority) {\n this.priority = options.priority;\n }\n\n if (options.cache) {\n this.cache = options.cache;\n }\n\n if (options.credentials) {\n this.credentials = options.credentials;\n }\n\n if (typeof options.timeout === 'number') {\n // XHR will ignore any value below 1. AbortSignals only accept unsigned integers.\n\n if (options.timeout < 1 || !Number.isInteger(options.timeout)) {\n throw new RuntimeError(\n RuntimeErrorCode.INVALID_TIMEOUT_VALUE,\n ngDevMode ? '`timeout` must be a positive integer value' : '',\n );\n }\n\n this.timeout = options.timeout;\n }\n\n if (options.mode) {\n this.mode = options.mode;\n }\n\n if (options.redirect) {\n this.redirect = options.redirect;\n }\n\n if (options.integrity) {\n this.integrity = options.integrity;\n }\n\n if (options.referrer) {\n this.referrer = options.referrer;\n }\n\n if (options.referrerPolicy) {\n this.referrerPolicy = options.referrerPolicy;\n }\n\n // We do want to assign transferCache even if it's falsy (false is valid value)\n this.transferCache = options.transferCache;\n }\n\n // If no headers have been passed in, construct a new HttpHeaders instance.\n this.headers ??= new HttpHeaders();\n\n // If no context have been passed in, construct a new HttpContext instance.\n this.context ??= new HttpContext();\n\n // If no parameters have been passed in, construct a new HttpUrlEncodedParams instance.\n if (!this.params) {\n this.params = new HttpParams();\n this.urlWithParams = url;\n } else {\n // Encode the parameters to a string in preparation for inclusion in the URL.\n const params = this.params.toString();\n if (params.length === 0) {\n // No parameters, the visible URL is just the URL given at creation time.\n this.urlWithParams = url;\n } else {\n // Does the URL already have query parameters? Look for '?'.\n const qIdx = url.indexOf('?');\n // There are 3 cases to handle:\n // 1) No existing parameters -> append '?' followed by params.\n // 2) '?' exists and is followed by existing query string ->\n // append '&' followed by params.\n // 3) '?' exists at the end of the url -> append params directly.\n // This basically amounts to determining the character, if any, with\n // which to join the URL and parameters.\n const sep: string = qIdx === -1 ? '?' : qIdx < url.length - 1 ? '&' : '';\n this.urlWithParams = url + sep + params;\n }\n }\n }\n\n /**\n * Transform the free-form body into a serialized format suitable for\n * transmission to the server.\n */\n serializeBody(): ArrayBuffer | Blob | FormData | URLSearchParams | string | null {\n // If no body is present, no need to serialize it.\n if (this.body === null) {\n return null;\n }\n // Check whether the body is already in a serialized form. If so,\n // it can just be returned directly.\n if (\n typeof this.body === 'string' ||\n isArrayBuffer(this.body) ||\n isBlob(this.body) ||\n isFormData(this.body) ||\n isUrlSearchParams(this.body)\n ) {\n return this.body;\n }\n // Check whether the body is an instance of HttpUrlEncodedParams.\n if (this.body instanceof HttpParams) {\n return this.body.toString();\n }\n // Check whether the body is an object or array, and serialize with JSON if so.\n if (\n typeof this.body === 'object' ||\n typeof this.body === 'boolean' ||\n Array.isArray(this.body)\n ) {\n return JSON.stringify(this.body);\n }\n // Fall back on toString() for everything else.\n return (this.body as any).toString();\n }\n\n /**\n * Examine the body and attempt to infer an appropriate MIME type\n * for it.\n *\n * If no such type can be inferred, this method will return `null`.\n */\n detectContentTypeHeader(): string | null {\n // An empty body has no content type.\n if (this.body === null) {\n return null;\n }\n // FormData bodies rely on the browser's content type assignment.\n if (isFormData(this.body)) {\n return null;\n }\n // Blobs usually have their own content type. If it doesn't, then\n // no type can be inferred.\n if (isBlob(this.body)) {\n return this.body.type || null;\n }\n // Array buffers have unknown contents and thus no type can be inferred.\n if (isArrayBuffer(this.body)) {\n return null;\n }\n // Technically, strings could be a form of JSON data, but it's safe enough\n // to assume they're plain strings.\n if (typeof this.body === 'string') {\n return TEXT_CONTENT_TYPE;\n }\n // `HttpUrlEncodedParams` has its own content-type.\n if (this.body instanceof HttpParams) {\n return 'application/x-www-form-urlencoded;charset=UTF-8';\n }\n // Arrays, objects, boolean and numbers will be encoded as JSON.\n if (\n typeof this.body === 'object' ||\n typeof this.body === 'number' ||\n typeof this.body === 'boolean'\n ) {\n return JSON_CONTENT_TYPE;\n }\n // No type could be inferred.\n return null;\n }\n\n clone(): HttpRequest<T>;\n clone(update: {\n headers?: HttpHeaders;\n context?: HttpContext;\n reportProgress?: boolean;\n params?: HttpParams;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n body?: T | null;\n method?: string;\n url?: string;\n setHeaders?: {[name: string]: string | string[]};\n setParams?: {[param: string]: string};\n }): HttpRequest<T>;\n clone<V>(update: {\n headers?: HttpHeaders;\n context?: HttpContext;\n reportProgress?: boolean;\n params?: HttpParams;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n body?: V | null;\n method?: string;\n url?: string;\n setHeaders?: {[name: string]: string | string[]};\n setParams?: {[param: string]: string};\n }): HttpRequest<V>;\n clone(\n update: {\n headers?: HttpHeaders;\n context?: HttpContext;\n reportProgress?: boolean;\n params?: HttpParams;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n body?: any | null;\n method?: string;\n url?: string;\n setHeaders?: {[name: string]: string | string[]};\n setParams?: {[param: string]: string};\n } = {},\n ): HttpRequest<any> {\n // For method, url, and responseType, take the current value unless\n // it is overridden in the update hash.\n const method = update.method || this.method;\n const url = update.url || this.url;\n const responseType = update.responseType || this.responseType;\n const keepalive = update.keepalive ?? this.keepalive;\n const priority = update.priority || this.priority;\n const cache = update.cache || this.cache;\n const mode = update.mode || this.mode;\n const redirect = update.redirect || this.redirect;\n const credentials = update.credentials || this.credentials;\n const referrer = update.referrer || this.referrer;\n const integrity = update.integrity || this.integrity;\n const referrerPolicy = update.referrerPolicy || this.referrerPolicy;\n // Carefully handle the transferCache to differentiate between\n // `false` and `undefined` in the update args.\n const transferCache = update.transferCache ?? this.transferCache;\n\n const timeout = update.timeout ?? this.timeout;\n\n // The body is somewhat special - a `null` value in update.body means\n // whatever current body is present is being overridden with an empty\n // body, whereas an `undefined` value in update.body implies no\n // override.\n const body = update.body !== undefined ? update.body : this.body;\n\n // Carefully handle the boolean options to differentiate between\n // `false` and `undefined` in the update args.\n const withCredentials = update.withCredentials ?? this.withCredentials;\n const reportProgress = update.reportProgress ?? this.reportProgress;\n\n // Headers and params may be appended to if `setHeaders` or\n // `setParams` are used.\n let headers = update.headers || this.headers;\n let params = update.params || this.params;\n\n // Pass on context if needed\n const context = update.context ?? this.context;\n\n // Check whether the caller has asked to add headers.\n if (update.setHeaders !== undefined) {\n // Set every requested header.\n headers = Object.keys(update.setHeaders).reduce(\n (headers, name) => headers.set(name, update.setHeaders![name]),\n headers,\n );\n }\n\n // Check whether the caller has asked to set params.\n if (update.setParams) {\n // Set every requested param.\n params = Object.keys(update.setParams).reduce(\n (params, param) => params.set(param, update.setParams![param]),\n params,\n );\n }\n\n // Finally, construct the new HttpRequest using the pieces from above.\n return new HttpRequest(method, url, body, {\n params,\n headers,\n context,\n reportProgress,\n responseType,\n withCredentials,\n transferCache,\n keepalive,\n cache,\n priority,\n timeout,\n mode,\n redirect,\n credentials,\n referrer,\n integrity,\n referrerPolicy,\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.dev/license\n */\n\nimport {HttpHeaders} from './headers';\n\n/**\n * Type enumeration for the different kinds of `HttpEvent`.\n *\n * @see [Receiving raw progress event](guide/http/making-requests#receiving-raw-progress-events)\n *\n * @publicApi\n */\nexport enum HttpEventType {\n /**\n * The request was sent out over the wire.\n */\n Sent,\n\n /**\n * An upload progress event was received.\n *\n * Note: The `FetchBackend` doesn't support progress report on uploads.\n */\n UploadProgress,\n\n /**\n * The response status code and headers were received.\n */\n ResponseHeader,\n\n /**\n * A download progress event was received.\n */\n DownloadProgress,\n\n /**\n * The full response including the body was received.\n */\n Response,\n\n /**\n * A custom event from an interceptor or a backend.\n */\n User,\n}\n\n/**\n * Base interface for progress events.\n *\n * @see [Receiving raw progress events](guide/http/making-requests#receiving-raw-progress-events)\n *\n * @publicApi\n */\nexport interface HttpProgressEvent {\n /**\n * Progress event type is either upload or download.\n */\n type: HttpEventType.DownloadProgress | HttpEventType.UploadProgress;\n\n /**\n * Number of bytes uploaded or downloaded.\n */\n loaded: number;\n\n /**\n * Total number of bytes to upload or download. Depending on the request or\n * response, this may not be computable and thus may not be present.\n */\n total?: number;\n}\n\n/**\n * A download progress event.\n *\n * @see [Receiving raw progress events](guide/http/making-requests#receiving-raw-progress-events)\n *\n * @publicApi\n */\nexport interface HttpDownloadProgressEvent extends HttpProgressEvent {\n type: HttpEventType.DownloadProgress;\n\n /**\n * The partial response body as downloaded so far.\n *\n * Only present if the responseType was `text`.\n */\n partialText?: string;\n}\n\n/**\n * An upload progress event.\n *\n * Note: The `FetchBackend` doesn't support progress report on uploads.\n *\n * @see [Receiving raw progress events](guide/http/making-requests#receiving-raw-progress-events)\n *\n * @publicApi\n */\nexport interface HttpUploadProgressEvent extends HttpProgressEvent {\n type: HttpEventType.UploadProgress;\n}\n\n/**\n * An event indicating that the request was sent to the server. Useful\n * when a request may be retried multiple times, to distinguish between\n * retries on the final event stream.\n *\n * @see [Receiving raw progress events](guide/http/making-requests#receiving-raw-progress-events)\n *\n * @publicApi\n */\nexport interface HttpSentEvent {\n type: HttpEventType.Sent;\n}\n\n/**\n * A user-defined event.\n *\n * Grouping all custom events under this type ensures they will be handled\n * and forwarded by all implementations of interceptors.\n *\n * @see [Receiving raw progress events](guide/http/making-requests#receiving-raw-progress-events)\n *\n * @publicApi\n */\nexport interface HttpUserEvent<T> {\n type: HttpEventType.User;\n}\n\n/**\n * An error that represents a failed attempt to JSON.parse text coming back\n * from the server.\n *\n * It bundles the Error object with the actual response body that failed to parse.\n *\n *\n */\nexport interface HttpJsonParseError {\n error: Error;\n text: string;\n}\n\n/**\n * Union type for all possible events on the response stream.\n *\n * Typed according to the expected type of the response.\n *\n * @see [Intercepting response events](guide/http/interceptors#intercepting-response-events)\n * @publicApi\n */\nexport type HttpEvent<T> =\n | HttpSentEvent\n | HttpHeaderResponse\n | HttpResponse<T>\n | HttpDownloadProgressEvent\n | HttpUploadProgressEvent\n | HttpUserEvent<T>;\n\n/**\n * Base class for both `HttpResponse` and `HttpHeaderResponse`.\n *\n * @publicApi\n */\nexport abstract class HttpResponseBase {\n /**\n * All response headers.\n */\n readonly headers: HttpHeaders;\n\n /**\n * Response status code.\n */\n readonly status: number;\n\n /**\n * Textual description of response status code, defaults to OK.\n *\n * Do not depend on this.\n *\n * @deprecated With HTTP/2 and later versions, this will incorrectly remain set to 'OK' even when the status code of a response is not 200.\n */\n readonly statusText: string;\n\n /**\n * URL of the resource retrieved, or null if not available.\n */\n readonly url: string | null;\n\n /**\n * Whether the status code falls in the 2xx range.\n */\n readonly ok: boolean;\n\n /**\n * Type of the response, narrowed to either the full response or the header.\n */\n readonly type!: HttpEventType.Response | HttpEventType.ResponseHeader;\n\n /**\n * Indicates whether the HTTP response was redirected during the request.\n * This property is only available when using the Fetch API using `withFetch()`\n * When using the default XHR Request this property will be `undefined`\n */\n readonly redirected?: boolean;\n\n /**\n * Indicates the type of the HTTP response, based on how the request was made and how the browser handles the response.\n *\n * This corresponds to the `type` property of the Fetch API's `Response` object, which can indicate values such as:\n * - `'basic'`: A same-origin response, allowing full access to the body and headers.\n * - `'cors'`: A cross-origin response with CORS enabled, exposing only safe response headers.\n * - `'opaque'`: A cross-origin response made with `no-cors`, where the response body and headers are inaccessible.\n * - `'opaqueredirect'`: A response resulting from a redirect followed in `no-cors` mode.\n * - `'error'`: A response representing a network error or similar failure.\n *\n * This property is only available when using the Fetch-based backend (via `withFetch()`).\n * When using Angular's (XHR) backend, this value will be `undefined`.\n */\n readonly responseType?: ResponseType;\n\n /**\n * Super-constructor for all responses.\n *\n * The single parameter accepted is an initialization hash. Any properties\n * of the response passed there will override the default values.\n */\n constructor(\n init: {\n headers?: HttpHeaders;\n status?: number;\n statusText?: string;\n url?: string;\n redirected?: boolean;\n responseType?: ResponseType;\n },\n defaultStatus: number = 200,\n defaultStatusText: string = 'OK',\n ) {\n // If the hash has values passed, use them to initialize the response.\n // Otherwise use the default values.\n this.headers = init.headers || new HttpHeaders();\n this.status = init.status !== undefined ? init.status : defaultStatus;\n this.statusText = init.statusText || defaultStatusText;\n this.url = init.url || null;\n this.redirected = init.redirected;\n this.responseType = init.responseType;\n // Cache the ok value to avoid defining a getter.\n this.ok = this.status >= 200 && this.status < 300;\n }\n}\n\n/**\n * A partial HTTP response which only includes the status and header data,\n * but no response body.\n *\n * `HttpHeaderResponse` is a `HttpEvent` available on the response\n * event stream, only when progress events are requested.\n *\n * @see [Receiving raw progress events](guide/http/making-requests#receiving-raw-progress-events)\n *\n * @publicApi\n */\nexport class HttpHeaderResponse extends HttpResponseBase {\n /**\n * Create a new `HttpHeaderResponse` with the given parameters.\n */\n constructor(\n init: {\n headers?: HttpHeaders;\n status?: number;\n statusText?: string;\n url?: string;\n } = {},\n ) {\n super(init);\n }\n\n override readonly type: HttpEventType.ResponseHeader = HttpEventType.ResponseHeader;\n\n /**\n * Copy this `HttpHeaderResponse`, overriding its contents with the\n * given parameter hash.\n */\n clone(\n update: {\n headers?: HttpHeaders;\n status?: number;\n statusText?: string;\n url?: string;\n } = {},\n ): HttpHeaderResponse {\n // Perform a straightforward initialization of the new HttpHeaderResponse,\n // overriding the current parameters with new ones if given.\n return new HttpHeaderResponse({\n headers: update.headers || this.headers,\n status: update.status !== undefined ? update.status : this.status,\n statusText: update.statusText || this.statusText,\n url: update.url || this.url || undefined,\n });\n }\n}\n\n/**\n * A full HTTP response, including a typed response body (which may be `null`\n * if one was not returned).\n *\n * `HttpResponse` is a `HttpEvent` available on the response event\n * stream.\n *\n * @see [Interacting with the server response events](guide/http/making-requests#interacting-with-the-server-response-events)\n *\n * @publicApi\n */\nexport class HttpResponse<T> extends HttpResponseBase {\n /**\n * The response body, or `null` if one was not returned.\n */\n readonly body: T | null;\n\n /**\n * Construct a new `HttpResponse`.\n */\n constructor(\n init: {\n body?: T | null;\n headers?: HttpHeaders;\n status?: number;\n statusText?: string;\n url?: string;\n redirected?: boolean;\n responseType?: ResponseType;\n } = {},\n ) {\n super(init);\n this.body = init.body !== undefined ? init.body : null;\n }\n\n override readonly type: HttpEventType.Response = HttpEventType.Response;\n\n clone(): HttpResponse<T>;\n clone(update: {\n headers?: HttpHeaders;\n status?: number;\n statusText?: string;\n url?: string;\n redirected?: boolean;\n responseType?: ResponseType;\n }): HttpResponse<T>;\n clone<V>(update: {\n body?: V | null;\n headers?: HttpHeaders;\n status?: number;\n statusText?: string;\n url?: string;\n redirected?: boolean;\n responseType?: ResponseType;\n }): HttpResponse<V>;\n clone(\n update: {\n body?: any | null;\n headers?: HttpHeaders;\n status?: number;\n statusText?: string;\n url?: string;\n redirected?: boolean;\n responseType?: ResponseType;\n } = {},\n ): HttpResponse<any> {\n return new HttpResponse<any>({\n body: update.body !== undefined ? update.body : this.body,\n headers: update.headers || this.headers,\n status: update.status !== undefined ? update.status : this.status,\n statusText: update.statusText || this.statusText,\n url: update.url || this.url || undefined,\n redirected: update.redirected ?? this.redirected,\n responseType: update.responseType ?? this.responseType,\n });\n }\n}\n\n/**\n * A response that represents an error or failure, either from a\n * non-successful HTTP status, an error while executing the request,\n * or some other failure which occurred during the parsing of the response.\n *\n * Any error returned on the `Observable` response stream will be\n * wrapped in an `HttpErrorResponse` to provide additional context about\n * the state of the HTTP layer when the error occurred. The error property\n * will contain either a wrapped Error object or the error response returned\n * from the server.\n *\n * @see [Handling request failure](guide/http/making-requests#handling-request-failure)\n *\n * @publicApi\n */\nexport class HttpErrorResponse extends HttpResponseBase implements Error {\n readonly name = 'HttpErrorResponse';\n readonly message: string;\n readonly error: any | null;\n\n /**\n * Errors are never okay, even when the status code is in the 2xx success range.\n */\n override readonly ok = false;\n\n constructor(init: {\n error?: any;\n headers?: HttpHeaders;\n status?: number;\n statusText?: string;\n url?: string;\n redirected?: boolean;\n responseType?: ResponseType;\n }) {\n // Initialize with a default status of 0 / Unknown Error.\n super(init, 0, 'Unknown Error');\n\n // If the response was successful, then this was a parse error. Otherwise, it was\n // a protocol-level failure of some sort. Either the request failed in transit\n // or the server returned an unsuccessful status code.\n if (this.status >= 200 && this.status < 300) {\n this.message = `Http failure during parsing for ${init.url || '(unknown url)'}`;\n } else {\n // TODO: Cleanup G3 to update the tests that rely on having the status text in the Error message.\n this.message = `Http failure response for ${init.url || '(unknown url)'}: ${init.status} ${\n init.statusText\n }`;\n }\n this.error = init.error || null;\n }\n}\n\n/**\n * We use these constant to prevent pulling the whole HttpStatusCode enum\n * Those are the only ones referenced directly by the framework\n */\nexport const HTTP_STATUS_CODE_OK = 200;\nexport const HTTP_STATUS_CODE_NO_CONTENT = 204;\n\n/**\n * Http status codes.\n * As per https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml\n * @publicApi\n */\nexport enum HttpStatusCode {\n Continue = 100,\n SwitchingProtocols = 101,\n Processing = 102,\n EarlyHints = 103,\n\n Ok = HTTP_STATUS_CODE_OK,\n Created = 201,\n Accepted = 202,\n NonAuthoritativeInformation = 203,\n NoContent = HTTP_STATUS_CODE_NO_CONTENT,\n ResetContent = 205,\n PartialContent = 206,\n MultiStatus = 207,\n AlreadyReported = 208,\n ImUsed = 226,\n\n MultipleChoices = 300,\n MovedPermanently = 301,\n Found = 302,\n SeeOther = 303,\n NotModified = 304,\n UseProxy = 305,\n Unused = 306,\n TemporaryRedirect = 307,\n PermanentRedirect = 308,\n\n BadRequest = 400,\n Unauthorized = 401,\n PaymentRequired = 402,\n Forbidden = 403,\n NotFound = 404,\n MethodNotAllowed = 405,\n NotAcceptable = 406,\n ProxyAuthenticationRequired = 407,\n RequestTimeout = 408,\n Conflict = 409,\n Gone = 410,\n LengthRequired = 411,\n PreconditionFailed = 412,\n PayloadTooLarge = 413,\n UriTooLong = 414,\n UnsupportedMediaType = 415,\n RangeNotSatisfiable = 416,\n ExpectationFailed = 417,\n ImATeapot = 418,\n MisdirectedRequest = 421,\n UnprocessableEntity = 422,\n Locked = 423,\n FailedDependency = 424,\n TooEarly = 425,\n UpgradeRequired = 426,\n PreconditionRequired = 428,\n TooManyRequests = 429,\n RequestHeaderFieldsTooLarge = 431,\n UnavailableForLegalReasons = 451,\n\n InternalServerError = 500,\n NotImplemented = 501,\n BadGateway = 502,\n ServiceUnavailable = 503,\n GatewayTimeout = 504,\n HttpVersionNotSupported = 505,\n VariantAlsoNegotiates = 506,\n InsufficientStorage = 507,\n LoopDetected = 508,\n NotExtended = 510,\n NetworkAuthenticationRequired = 511,\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.dev/license\n */\n\nimport {\n DestroyRef,\n inject,\n Injectable,\n InjectionToken,\n NgZone,\n ɵformatRuntimeError as formatRuntimeError,\n} from '@angular/core';\nimport {Observable, Observer} from 'rxjs';\nimport {RuntimeErrorCode} from './errors';\n\nimport type {HttpBackend} from './backend';\nimport {HttpHeaders} from './headers';\nimport {ACCEPT_HEADER, ACCEPT_HEADER_VALUE, CONTENT_TYPE_HEADER, HttpRequest} from './request';\nimport {\n HTTP_STATUS_CODE_OK,\n HttpDownloadProgressEvent,\n HttpErrorResponse,\n HttpEvent,\n HttpEventType,\n HttpHeaderResponse,\n HttpResponse,\n} from './response';\n\n// Needed for the global `Zone` ambient types to be available.\nimport type {} from 'zone.js';\n\nconst XSSI_PREFIX = /^\\)\\]\\}',?\\n/;\n\n/**\n * An internal injection token to reference `FetchBackend` implementation\n * in a tree-shakable way.\n */\nexport const FETCH_BACKEND = new InjectionToken<FetchBackend>(\n typeof ngDevMode === 'undefined' || ngDevMode ? 'FETCH_BACKEND' : '',\n);\n\n/**\n * Uses `fetch` to send requests to a backend server.\n *\n * This `FetchBackend` requires the support of the\n * [Fetch API](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API) which is available on all\n * supported browsers and on Node.js v18 or later.\n *\n * @see {@link HttpHandler}\n *\n * @publicApi\n */\n@Injectable()\nexport class FetchBackend implements HttpBackend {\n // We use an arrow function to always reference the current global implementation of `fetch`.\n // This is helpful for cases when the global `fetch` implementation is modified by external code,\n // see https://github.com/angular/angular/issues/57527.\n private readonly fetchImpl =\n inject(FetchFactory, {optional: true})?.fetch ?? ((...args) => globalThis.fetch(...args));\n private readonly ngZone = inject(NgZone);\n private readonly destroyRef = inject(DestroyRef);\n\n handle(request: HttpRequest<any>): Observable<HttpEvent<any>> {\n return new Observable((observer) => {\n const aborter = new AbortController();\n\n this.doRequest(request, aborter.signal, observer).then(noop, (error) =>\n observer.error(new HttpErrorResponse({error})),\n );\n\n let timeoutId: ReturnType<typeof setTimeout> | undefined;\n if (request.timeout) {\n // TODO: Replace with AbortSignal.any([aborter.signal, AbortSignal.timeout(request.timeout)])\n // when AbortSignal.any support is Baseline widely available (NET nov. 2026)\n timeoutId = this.ngZone.runOutsideAngular(() =>\n setTimeout(() => {\n if (!aborter.signal.aborted) {\n aborter.abort(new DOMException('signal timed out', 'TimeoutError'));\n }\n }, request.timeout),\n );\n }\n\n return () => {\n if (timeoutId !== undefined) {\n clearTimeout(timeoutId);\n }\n aborter.abort();\n };\n });\n }\n\n private async doRequest(\n request: HttpRequest<any>,\n signal: AbortSignal,\n observer: Observer<HttpEvent<any>>,\n ): Promise<void> {\n const init = this.createRequestInit(request);\n let response;\n try {\n // Run fetch outside of Angular zone.\n // This is due to Node.js fetch implementation (Undici) which uses a number of setTimeouts to check if\n // the response should eventually timeout which causes extra CD cycles every 500ms\n const fetchPromise = this.ngZone.runOutsideAngular(() =>\n this.fetchImpl(request.urlWithParams, {signal, ...init}),\n );\n\n // Make sure Zone.js doesn't trigger false-positive unhandled promise\n // error in case the Promise is rejected synchronously. See function\n // description for additional information.\n silenceSuperfluousUnhandledPromiseRejection(fetchPromise);\n\n // Send the `Sent` event before awaiting the response.\n observer.next({type: HttpEventType.Sent});\n\n response = await fetchPromise;\n } catch (error: any) {\n observer.error(\n new HttpErrorResponse({\n error,\n status: error.status ?? 0,\n statusText: error.statusText,\n url: request.urlWithParams,\n headers: error.headers,\n }),\n );\n return;\n }\n\n const headers = new HttpHeaders(response.headers);\n const statusText = response.statusText;\n const url = response.url || request.urlWithParams;\n\n let status = response.status;\n let body: string | ArrayBuffer | Blob | object | null = null;\n\n if (request.reportProgress) {\n observer.next(new HttpHeaderResponse({headers, status, statusText, url}));\n }\n\n if (response.body) {\n // Read Progress\n const contentLength = response.headers.get('content-length');\n const chunks: Uint8Array[] = [];\n const reader = response.body.getReader();\n let receivedLength = 0;\n\n let decoder: TextDecoder;\n let partialText: string | undefined;\n\n // We have to check whether the Zone is defined in the global scope because this may be called\n // when the zone is nooped.\n const reqZone = typeof Zone !== 'undefined' && Zone.current;\n\n let canceled = false;\n\n // Perform response processing outside of Angular zone to\n // ensure no excessive change detection runs are executed\n // Here calling the async ReadableStreamDefaultReader.read() is responsible for triggering CD\n await this.ngZone.runOutsideAngular(async () => {\n while (true) {\n // Prevent reading chunks if the app is destroyed. Otherwise, we risk doing\n // unnecessary work or triggering side effects after teardown.\n // This may happen if the app was explicitly destroyed before\n // the response returned entirely.\n if (this.destroyRef.destroyed) {\n // Streams left in a pending state (due to `break` without cancel) may\n // continue consuming or holding onto data behind the scenes.\n // Calling `reader.cancel()` allows the browser or the underlying\n // system to release any network or memory resources associated with the stream.\n await reader.cancel();\n canceled = true;\n break;\n }\n\n const {done, value} = await reader.read();\n\n if (done) {\n break;\n }\n\n chunks.push(value);\n receivedLength += value.length;\n\n if (request.reportProgress) {\n partialText =\n request.responseType === 'text'\n ? (partialText ?? '') +\n (decoder ??= new TextDecoder()).decode(value, {stream: true})\n : undefined;\n\n const reportProgress = () =>\n observer.next({\n type: HttpEventType.DownloadProgress,\n total: contentLength ? +contentLength : undefined,\n loaded: receivedLength,\n partialText,\n } as HttpDownloadProgressEvent);\n reqZone ? reqZone.run(reportProgress) : reportProgress();\n }\n }\n });\n\n // We need to manage the canceled state — because the Streams API does not\n // expose a direct `.state` property on the reader.\n // We need to `return` because `parseBody` may not be able to parse chunks\n // that were only partially read (due to cancellation caused by app destruction).\n if (canceled) {\n observer.complete();\n return;\n }\n\n // Combine all chunks.\n const chunksAll = this.concatChunks(chunks, receivedLength);\n try {\n const contentType = response.headers.get(CONTENT_TYPE_HEADER) ?? '';\n body = this.parseBody(request, chunksAll, contentType, status);\n } catch (error) {\n // Body loading or parsing failed\n observer.error(\n new HttpErrorResponse({\n error,\n headers: new HttpHeaders(response.headers),\n status: response.status,\n statusText: response.statusText,\n url: response.url || request.urlWithParams,\n }),\n );\n return;\n }\n }\n\n // Same behavior as the XhrBackend\n if (status === 0) {\n status = body ? HTTP_STATUS_CODE_OK : 0;\n }\n\n // ok determines whether the response will be transmitted on the event or\n // error channel. Unsuccessful status codes (not 2xx) will always be errors,\n // but a successful status code can still result in an error if the user\n // asked for JSON data and the body cannot be parsed as such.\n const ok = status >= 200 && status < 300;\n\n const redirected = response.redirected;\n\n const responseType = response.type;\n\n if (ok) {\n observer.next(\n new HttpResponse({\n body,\n headers,\n status,\n statusText,\n url,\n redirected,\n responseType,\n }),\n );\n\n // The full body has been received and delivered, no further events\n // are possible. This request is complete.\n observer.complete();\n } else {\n observer.error(\n new HttpErrorResponse({\n error: body,\n headers,\n status,\n statusText,\n url,\n redirected,\n responseType,\n }),\n );\n }\n }\n\n private parseBody(\n request: HttpRequest<any>,\n binContent: Uint8Array<ArrayBuffer>,\n contentType: string,\n status: number,\n ): string | ArrayBuffer | Blob | object | null {\n switch (request.responseType) {\n case 'json':\n // stripping the XSSI when present\n const text = new TextDecoder().decode(binContent).replace(XSSI_PREFIX, '');\n if (text === '') {\n return null;\n }\n try {\n return JSON.parse(text) as object;\n } catch (e: unknown) {\n // Allow handling non-JSON errors (!) as plain text, same as the XHR\n // backend. Without this special sauce, any non-JSON error would be\n // completely inaccessible downstream as the `HttpErrorResponse.error`\n // would be set to the `SyntaxError` from then failing `JSON.parse`.\n if (status < 200 || status >= 300) {\n return text;\n }\n throw e;\n }\n case 'text':\n return new TextDecoder().decode(binContent);\n case 'blob':\n return new Blob([binContent], {type: contentType});\n case 'arraybuffer':\n return binContent.buffer;\n }\n }\n\n private createRequestInit(req: HttpRequest<any>): RequestInit {\n // We could share some of this logic with the XhrBackend\n\n const headers: Record<string, string> = {};\n let credentials: RequestCredentials | undefined;\n\n // If the request has a credentials property, use it.\n // Otherwise, if the request has withCredentials set to true, use 'include'.\n credentials = req.credentials;\n\n // If withCredentials is true should be set to 'include', for compatibility\n if (req.withCredentials) {\n // A warning is logged in development mode if the request has both\n (typeof ngDevMode === 'undefined' || ngDevMode) && warningOptionsMessage(req);\n credentials = 'include';\n }\n\n // Setting all the requested headers.\n req.headers.forEach((name, values) => (headers[name] = values.join(',')));\n\n // Add an Accept header if one isn't present already.\n if (!req.headers.has(ACCEPT_HEADER)) {\n headers[ACCEPT_HEADER] = ACCEPT_HEADER_VALUE;\n }\n\n // Auto-detect the Content-Type header if one isn't present already.\n if (!req.headers.has(CONTENT_TYPE_HEADER)) {\n const detectedType = req.detectContentTypeHeader();\n // Sometimes Content-Type detection fails.\n if (detectedType !== null) {\n headers[CONTENT_TYPE_HEADER] = detectedType;\n }\n }\n\n return {\n body: req.serializeBody(),\n method: req.method,\n headers,\n credentials,\n keepalive: req.keepalive,\n cache: req.cache,\n priority: req.priority,\n mode: req.mode,\n redirect: req.redirect,\n referrer: req.referrer,\n integrity: req.integrity,\n referrerPolicy: req.referrerPolicy,\n };\n }\n\n private concatChunks(chunks: Uint8Array[], totalLength: number): Uint8Array<ArrayBuffer> {\n const chunksAll = new Uint8Array(totalLength);\n let position = 0;\n for (const chunk of chunks) {\n chunksAll.set(chunk, position);\n position += chunk.length;\n }\n\n return chunksAll;\n }\n}\n\n/**\n * Abstract class to provide a mocked implementation of `fetch()`\n */\nexport abstract class FetchFactory {\n abstract fetch: typeof fetch;\n}\n\nfunction noop(): void {}\n\nfunction warningOptionsMessage(req: HttpRequest<any>) {\n if (req.credentials && req.withCredentials) {\n console.warn(\n formatRuntimeError(\n RuntimeErrorCode.WITH_CREDENTIALS_OVERRIDES_EXPLICIT_CREDENTIALS,\n `Angular detected that a \\`HttpClient\\` request has both \\`withCredentials: true\\` and \\`credentials: '${req.credentials}'\\` options. The \\`withCredentials\\` option is overriding the explicit \\`credentials\\` setting to 'include'. Consider removing \\`withCredentials\\` and using \\`credentials: '${req.credentials}'\\` directly for clarity.`,\n ),\n );\n }\n}\n\n/**\n * Zone.js treats a rejected promise that has not yet been awaited\n * as an unhandled error. This function adds a noop `.then` to make\n * sure that Zone.js doesn't throw an error if the Promise is rejected\n * synchronously.\n */\nfunction silenceSuperfluousUnhandledPromiseRejection(promise: Promise<unknown>) {\n promise.then(noop, noop);\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.dev/license\n */\n\nimport {XhrFactory} from '../../index';\nimport {\n inject,\n Injectable,\n ɵRuntimeError as RuntimeError,\n ɵformatRuntimeError as formatRuntimeError,\n ɵTracingService as TracingService,\n ɵTracingSnapshot as TracingSnapshot,\n} from '@angular/core';\nimport {from, Observable, Observer, of} from 'rxjs';\nimport {switchMap} from 'rxjs/operators';\n\nimport type {HttpBackend} from './backend';\nimport {RuntimeErrorCode} from './errors';\nimport {HttpHeaders} from './headers';\nimport {ACCEPT_HEADER, ACCEPT_HEADER_VALUE, CONTENT_TYPE_HEADER, HttpRequest} from './request';\nimport {\n HTTP_STATUS_CODE_NO_CONTENT,\n HTTP_STATUS_CODE_OK,\n HttpDownloadProgressEvent,\n HttpErrorResponse,\n HttpEvent,\n HttpEventType,\n HttpHeaderResponse,\n HttpJsonParseError,\n HttpResponse,\n HttpUploadProgressEvent,\n} from './response';\n\nconst XSSI_PREFIX = /^\\)\\]\\}',?\\n/;\n\n/**\n * Validates whether the request is compatible with the XHR backend.\n * Show a warning if the request contains options that are not supported by XHR.\n */\nfunction validateXhrCompatibility(req: HttpRequest<any>) {\n const unsupportedOptions: {\n property: keyof HttpRequest<any>;\n errorCode: RuntimeErrorCode;\n }[] = [\n {\n property: 'keepalive',\n errorCode: RuntimeErrorCode.KEEPALIVE_NOT_SUPPORTED_WITH_XHR,\n },\n {\n property: 'cache',\n errorCode: RuntimeErrorCode.CACHE_NOT_SUPPORTED_WITH_XHR,\n },\n {\n property: 'priority',\n errorCode: RuntimeErrorCode.PRIORITY_NOT_SUPPORTED_WITH_XHR,\n },\n {\n property: 'mode',\n errorCode: RuntimeErrorCode.MODE_NOT_SUPPORTED_WITH_XHR,\n },\n {\n property: 'redirect',\n errorCode: RuntimeErrorCode.REDIRECT_NOT_SUPPORTED_WITH_XHR,\n },\n {\n property: 'credentials',\n errorCode: RuntimeErrorCode.CREDENTIALS_NOT_SUPPORTED_WITH_XHR,\n },\n {\n property: 'integrity',\n errorCode: RuntimeErrorCode.INTEGRITY_NOT_SUPPORTED_WITH_XHR,\n },\n {\n property: 'referrer',\n errorCode: RuntimeErrorCode.REFERRER_NOT_SUPPORTED_WITH_XHR,\n },\n {\n property: 'referrerPolicy',\n errorCode: RuntimeErrorCode.REFERRER_POLICY_NOT_SUPPORTED_WITH_XHR,\n },\n ];\n\n // Check each unsupported option and warn if present\n for (const {property, errorCode} of unsupportedOptions) {\n if (req[property]) {\n console.warn(\n formatRuntimeError(\n errorCode,\n `Angular detected that a \\`HttpClient\\` request with the \\`${property}\\` option was sent using XHR, which does not support it. To use the \\`${property}\\` option, enable Fetch API support by passing \\`withFetch()\\` as an argument to \\`provideHttpClient()\\`.`,\n ),\n );\n }\n }\n}\n\n/**\n * Uses `XMLHttpRequest` to send requests to a backend server.\n * @see {@link HttpHandler}\n * @see {@link JsonpClientBackend}\n *\n * @publicApi\n */\n@Injectable({providedIn: 'root'})\nexport class HttpXhrBackend implements HttpBackend {\n private readonly tracingService: TracingService<TracingSnapshot> | null = inject(TracingService, {\n optional: true,\n });\n\n constructor(private xhrFactory: XhrFactory) {}\n\n private maybePropagateTrace<T extends Function>(fn: T): T {\n return this.tracingService?.propagate ? this.tracingService.propagate(fn) : fn;\n }\n\n /**\n * Processes a request and returns a stream of response events.\n * @param req The request object.\n * @returns An observable of the response events.\n */\n handle(req: HttpRequest<any>): Observable<HttpEvent<any>> {\n // Quick check to give a better error message when a user attempts to use\n // HttpClient.jsonp() without installing the HttpClientJsonpModule\n if (req.method === 'JSONP') {\n throw new RuntimeError(\n RuntimeErrorCode.MISSING_JSONP_MODULE,\n (typeof ngDevMode === 'undefined' || ngDevMode) &&\n `Cannot make a JSONP request without JSONP support. To fix the problem, either add the \\`withJsonpSupport()\\` call (if \\`provideHttpClient()\\` is used) or import the \\`HttpClientJsonpModule\\` in the root NgModule.`,\n );\n }\n\n // Validate that the request is compatible with the XHR backend.\n ngDevMode && validateXhrCompatibility(req);\n\n // Check whether this factory has a special function to load an XHR implementation\n // for various non-browser environments. We currently limit it to only `ServerXhr`\n // class, which needs to load an XHR implementation.\n const xhrFactory: XhrFactory & {ɵloadImpl?: () => Promise<void>} = this.xhrFactory;\n const source: Observable<void | null> =\n // Note that `ɵloadImpl` is never defined in client bundles and can be\n // safely dropped whenever we're running in the browser.\n // This branching is redundant.\n // The `ngServerMode` guard also enables tree-shaking of the `from()`\n // function from the common bundle, as it's only used in server code.\n typeof ngServerMode !== 'undefined' && ngServerMode && xhrFactory.ɵloadImpl\n ? from(xhrFactory.ɵloadImpl())\n : of(null);\n\n return source.pipe(\n switchMap(() => {\n // Everything happens on Observable subscription.\n return new Observable((observer: Observer<HttpEvent<any>>) => {\n // Start by setting up the XHR object with request method, URL, and withCredentials\n // flag.\n const xhr = xhrFactory.build();\n xhr.open(req.method, req.urlWithParams);\n if (req.withCredentials) {\n xhr.withCredentials = true;\n }\n\n // Add all the requested headers.\n req.headers.forEach((name, values) => xhr.setRequestHeader(name, values.join(',')));\n\n // Add an Accept header if one isn't present already.\n if (!req.headers.has(ACCEPT_HEADER)) {\n xhr.setRequestHeader(ACCEPT_HEADER, ACCEPT_HEADER_VALUE);\n }\n\n // Auto-detect the Content-Type header if one isn't present already.\n if (!req.headers.has(CONTENT_TYPE_HEADER)) {\n const detectedType = req.detectContentTypeHeader();\n // Sometimes Content-Type detection fails.\n if (detectedType !== null) {\n xhr.setRequestHeader(CONTENT_TYPE_HEADER, detectedType);\n }\n }\n\n if (req.timeout) {\n xhr.timeout = req.timeout;\n }\n\n // Set the responseType if one was requested.\n if (req.responseType) {\n const responseType = req.responseType.toLowerCase();\n\n // JSON responses need to be processed as text. This is because if the server\n // returns an XSSI-prefixed JSON response, the browser will fail to parse it,\n // xhr.response will be null, and xhr.responseText cannot be accessed to\n // retrieve the prefixed JSON data in order to strip the prefix. Thus, all JSON\n // is parsed by first requesting text and then applying JSON.parse.\n xhr.responseType = (responseType !== 'json' ? responseType : 'text') as any;\n }\n\n // Serialize the request body if one is present. If not, this will be set to null.\n const reqBody = req.serializeBody();\n\n // If progress events are enabled, response headers will be delivered\n // in two events - the HttpHeaderResponse event and the full HttpResponse\n // event. However, since response headers don't change in between these\n // two events, it doesn't make sense to parse them twice. So headerResponse\n // caches the data extracted from the response whenever it's first parsed,\n // to ensure parsing isn't duplicated.\n let headerResponse: HttpHeaderResponse | null = null;\n\n // partialFromXhr extracts the HttpHeaderResponse from the current XMLHttpRequest\n // state, and memoizes it into headerResponse.\n const partialFromXhr = (): HttpHeaderResponse => {\n if (headerResponse !== null) {\n return headerResponse;\n }\n\n const statusText = xhr.statusText || 'OK';\n\n // Parse headers from XMLHttpRequest - this step is lazy.\n const headers = new HttpHeaders(xhr.getAllResponseHeaders());\n\n // Read the response URL from the XMLHttpResponse instance and fall back on the\n // request URL.\n const url = xhr.responseURL || req.url;\n\n // Construct the HttpHeaderResponse and memoize it.\n headerResponse = new HttpHeaderResponse({headers, status: xhr.status, statusText, url});\n return headerResponse;\n };\n\n // Next, a few closures are defined for the various events which XMLHttpRequest can\n // emit. This allows them to be unregistered as event listeners later.\n\n // First up is the load event, which represents a response being fully available.\n const onLoad = this.maybePropagateTrace(() => {\n // Read response state from the memoized partial data.\n let {headers, status, statusText, url} = partialFromXhr();\n\n // The body will be read out if present.\n let body: any | null = null;\n\n if (status !== HTTP_STATUS_CODE_NO_CONTENT) {\n // Use XMLHttpRequest.response if set, responseText otherwise.\n body = typeof xhr.response === 'undefined' ? xhr.responseText : xhr.response;\n }\n\n // Normalize another potential bug (this one comes from CORS).\n if (status === 0) {\n status = !!body ? HTTP_STATUS_CODE_OK : 0;\n }\n\n // ok determines whether the response will be transmitted on the event or\n // error channel. Unsuccessful status codes (not 2xx) will always be errors,\n // but a successful status code can still result in an error if the user\n // asked for JSON data and the body cannot be parsed as such.\n let ok = status >= 200 && status < 300;\n\n // Check whether the body needs to be parsed as JSON (in many cases the browser\n // will have done that already).\n if (req.responseType === 'json' && typeof body === 'string') {\n // Save the original body, before attempting XSSI prefix stripping.\n const originalBody = body;\n body = body.replace(XSSI_PREFIX, '');\n try {\n // Attempt the parse. If it fails, a parse error should be delivered to the\n // user.\n body = body !== '' ? JSON.parse(body) : null;\n } catch (error) {\n // Since the JSON.parse failed, it's reasonable to assume this might not have\n // been a JSON response. Restore the original body (including any XSSI prefix)\n // to deliver a better error response.\n body = originalBody;\n\n // If this was an error request to begin with, leave it as a string, it\n // probably just isn't JSON. Otherwise, deliver the parsing error to the user.\n if (ok) {\n // Even though the response status was 2xx, this is still an error.\n ok = false;\n // The parse error contains the text of the body that failed to parse.\n body = {error, text: body} as HttpJsonParseError;\n }\n }\n }\n\n if (ok) {\n // A successful response is delivered on the event stream.\n observer.next(\n new HttpResponse({\n body,\n headers,\n status,\n statusText,\n url: url || undefined,\n }),\n );\n // The full body has been received and delivered, no further events\n // are possible. This request is complete.\n observer.complete();\n } else {\n // An unsuccessful request is delivered on the error channel.\n observer.error(\n new HttpErrorResponse({\n // The error in this case is the response body (error from the server).\n error: body,\n headers,\n status,\n statusText,\n url: url || undefined,\n }),\n );\n }\n });\n\n // The onError callback is called when something goes wrong at the network level.\n // Connection timeout, DNS error, offline, etc. These are actual errors, and are\n // transmitted on the error channel.\n const onError = this.maybePropagateTrace((error: ProgressEvent) => {\n const {url} = partialFromXhr();\n const res = new HttpErrorResponse({\n error,\n status: xhr.status || 0,\n statusText: xhr.statusText || 'Unknown Error',\n url: url || undefined,\n });\n observer.error(res);\n });\n\n let onTimeout = onError;\n\n if (req.timeout) {\n onTimeout = this.maybePropagateTrace((_: ProgressEvent) => {\n const {url} = partialFromXhr();\n const res = new HttpErrorResponse({\n error: new DOMException('Request timed out', 'TimeoutError'),\n status: xhr.status || 0,\n statusText: xhr.statusText || 'Request timeout',\n url: url || undefined,\n });\n observer.error(res);\n });\n }\n\n // The sentHeaders flag tracks whether the HttpResponseHeaders event\n // has been sent on the stream. This is necessary to track if progress\n // is enabled since the event will be sent on only the first download\n // progress event.\n let sentHeaders = false;\n\n // The download progress event handler, which is only registered if\n // progress events are enabled.\n const onDownProgress = this.maybePropagateTrace((event: ProgressEvent) => {\n // Send the HttpResponseHeaders event if it hasn't been sent already.\n if (!sentHeaders) {\n observer.next(partialFromXhr());\n sentHeaders = true;\n }\n\n // Start building the download progress event to deliver on the response\n // event stream.\n let progressEvent: HttpDownloadProgressEvent = {\n type: HttpEventType.DownloadProgress,\n loaded: event.loaded,\n };\n\n // Set the total number of bytes in the event if it's available.\n if (event.lengthComputable) {\n progressEvent.total = event.total;\n }\n\n // If the request was for text content and a partial response is\n // available on XMLHttpRequest, include it in the progress event\n // to allow for streaming reads.\n if (req.responseType === 'text' && !!xhr.responseText) {\n progressEvent.partialText = xhr.responseText;\n }\n\n // Finally, fire the event.\n observer.next(progressEvent);\n });\n\n // The upload progress event handler, which is only registered if\n // progress events are enabled.\n const onUpProgress = this.maybePropagateTrace((event: ProgressEvent) => {\n // Upload progress events are simpler. Begin building the progress\n // event.\n let progress: HttpUploadProgressEvent = {\n type: HttpEventType.UploadProgress,\n loaded: event.loaded,\n };\n\n // If the total number of bytes being uploaded is available, include\n // it.\n if (event.lengthComputable) {\n progress.total = event.total;\n }\n\n // Send the event.\n observer.next(progress);\n });\n\n // By default, register for load and error events.\n xhr.addEventListener('load', onLoad);\n xhr.addEventListener('error', onError);\n xhr.addEventListener('timeout', onTimeout);\n xhr.addEventListener('abort', onError);\n\n // Progress events are only enabled if requested.\n if (req.reportProgress) {\n // Download progress is always enabled if requested.\n xhr.addEventListener('progress', onDownProgress);\n\n // Upload progress depends on whether there is a body to upload.\n if (reqBody !== null && xhr.upload) {\n xhr.upload.addEventListener('progress', onUpProgress);\n }\n }\n\n // Fire the request, and notify the event stream that it was fired.\n xhr.send(reqBody!);\n observer.next({type: HttpEventType.Sent});\n // This is the return from the Observable function, which is the\n // request cancellation handler.\n return () => {\n // On a cancellation, remove all registered event listeners.\n xhr.removeEventListener('error', onError);\n xhr.removeEventListener('abort', onError);\n xhr.removeEventListener('load', onLoad);\n xhr.removeEventListener('timeout', onTimeout);\n\n if (req.reportProgress) {\n xhr.removeEventListener('progress', onDownProgress);\n if (reqBody !== null && xhr.upload) {\n xhr.upload.removeEventListener('progress', onUpProgress);\n }\n }\n\n // Finally, abort the in-flight request.\n if (xhr.readyState !== xhr.DONE) {\n xhr.abort();\n }\n };\n });\n }),\n );\n }\n}\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.dev/license\n */\n\nimport {\n EnvironmentInjector,\n inject,\n InjectionToken,\n runInInjectionContext,\n PendingTasks,\n} from '@angular/core';\nimport {Observable} from 'rxjs';\nimport {finalize} from 'rxjs/operators';\n\nimport type {HttpHandler} from './backend';\n\nimport {HttpRequest} from './request';\nimport {HttpEvent} from './response';\n\n/**\n * Intercepts and handles an `HttpRequest` or `HttpResponse`.\n *\n * Most interceptors transform the outgoing request before passing it to the\n * next interceptor in the chain, by calling `next.handle(transformedReq)`.\n * An interceptor may transform the\n * response event stream as well, by applying additional RxJS operators on the stream\n * returned by `next.handle()`.\n *\n * More rarely, an interceptor may handle the request entirely,\n * and compose a new event stream instead of invoking `next.handle()`. This is an\n * acceptable behavior, but keep in mind that further interceptors will be skipped entirely.\n *\n * It is also rare but valid for an interceptor to return multiple responses on the\n * event stream for a single request.\n *\n * @publicApi\n *\n * @see [HTTP Guide](guide/http/interceptors)\n * @see {@link HttpInterceptorFn}\n *\n * @usageNotes\n *\n * To use the same instance of `HttpInterceptors` for the entire app, import the `HttpClientModule`\n * only in your `AppModule`, and add the interceptors to the root application injector.\n * If you import `HttpClientModule` multiple times across different modules (for example, in lazy\n * loading modules), each import creates a new copy of the `HttpClientModule`, which overwrites the\n * interceptors provided in the root module.\n */\nexport interface HttpInterceptor {\n /**\n * Identifies and handles a given HTTP request.\n * @param req The outgoing request object to handle.\n * @param next The next interceptor in the chain, or the backend\n * if no interceptors remain in the chain.\n * @returns An observable of the event stream.\n */\n intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>>;\n}\n\n/**\n * Represents the next interceptor in an interceptor chain, or the real backend if there are no\n * further interceptors.\n *\n * Most interceptors will delegate to this function, and either modify the outgoing request or the\n * response when it arrives. Within the scope of the current request, however, this function may be\n * called any number of times, for any number of downstream requests. Such downstream requests need\n * not be to the same URL or even the same origin as the current request. It is also valid to not\n * call the downstream handler at all, and process the current request entirely within the\n * interceptor.\n *\n * This function should only be called within the scope of the request that's currently being\n * intercepted. Once that request is complete, this downstream handler function should not be\n * called.\n *\n * @publicApi\n *\n * @see [HTTP Guide](guide/http/interceptors)\n */\nexport type HttpHandlerFn = (req: HttpRequest<unknown>) => Observable<HttpEvent<unknown>>;\n\n/**\n * An interceptor for HTTP requests made via `HttpClient`.\n *\n * `HttpInterceptorFn`s are middleware functions which `HttpClient` calls when a request is made.\n * These functions have the opportunity to modify the outgoing request or any response that comes\n * back, as well as block, redirect, or otherwise change the request or response semantics.\n *\n * An `HttpHandlerFn` representing the next interceptor (or the backend which will make a real HTTP\n * request) is provided. Most interceptors will delegate to this function, but that is not required\n * (see `HttpHandlerFn` for more details).\n *\n * `HttpInterceptorFn`s are executed in an [injection context](guide/di/dependency-injection-context).\n * They have access to `inject()` via the `EnvironmentInjector` from which they were configured.\n *\n * @see [HTTP Guide](guide/http/interceptors)\n * @see {@link withInterceptors}\n *\n * @usageNotes\n * Here is a noop interceptor that passes the request through without modifying it:\n * ```ts\n * export const noopInterceptor: HttpInterceptorFn = (req: HttpRequest<unknown>, next:\n * HttpHandlerFn) => {\n * return next(modifiedReq);\n * };\n * ```\n *\n * If you want to alter a request, clone it first and modify the clone before passing it to the\n * `next()` handler function.\n *\n * Here is a basic interceptor that adds a bearer token to the headers\n * ```ts\n * export const authenticationInterceptor: HttpInterceptorFn = (req: HttpRequest<unknown>, next:\n * HttpHandlerFn) => {\n * const userToken = 'MY_TOKEN'; const modifiedReq = req.clone({\n * headers: req.headers.set('Authorization', `Bearer ${userToken}`),\n * });\n *\n * return next(modifiedReq);\n * };\n * ```\n */\nexport type HttpInterceptorFn = (\n req: HttpRequest<unknown>,\n next: HttpHandlerFn,\n) => Observable<HttpEvent<unknown>>;\n\n/**\n * Function which invokes an HTTP interceptor chain.\n *\n * Each interceptor in the interceptor chain is turned into a `ChainedInterceptorFn` which closes\n * over the rest of the chain (represented by another `ChainedInterceptorFn`). The last such\n * function in the chain will instead delegate to the `finalHandlerFn`, which is passed down when\n * the chain is invoked.\n *\n * This pattern allows for a chain of many interceptors to be composed and wrapped in a single\n * `HttpInterceptorFn`, which is a useful abstraction for including different kinds of interceptors\n * (e.g. legacy class-based interceptors) in the same chain.\n */\nexport type ChainedInterceptorFn<RequestT> = (\n req: HttpRequest<RequestT>,\n finalHandlerFn: HttpHandlerFn,\n) => Observable<HttpEvent<RequestT>>;\n\nexport function interceptorChainEndFn(\n req: HttpRequest<any>,\n finalHandlerFn: HttpHandlerFn,\n): Observable<HttpEvent<any>> {\n return finalHandlerFn(req);\n}\n\n/**\n * Constructs a `ChainedInterceptorFn` which adapts a legacy `HttpInterceptor` to the\n * `ChainedInterceptorFn` interface.\n */\nexport function adaptLegacyInterceptorToChain(\n chainTailFn: ChainedInterceptorFn<any>,\n interceptor: HttpInterceptor,\n): ChainedInterceptorFn<any> {\n return (initialRequest, finalHandlerFn) =>\n interceptor.intercept(initialRequest, {\n handle: (downstreamRequest) => chainTailFn(downstreamRequest, finalHandlerFn),\n });\n}\n\n/**\n * Constructs a `ChainedInterceptorFn` which wraps and invokes a functional interceptor in the given\n * injector.\n */\nexport function chainedInterceptorFn(\n chainTailFn: ChainedInterceptorFn<unknown>,\n interceptorFn: HttpInterceptorFn,\n injector: EnvironmentInjector,\n): ChainedInterceptorFn<unknown> {\n return (initialRequest, finalHandlerFn) =>\n runInInjectionContext(injector, () =>\n interceptorFn(initialRequest, (downstreamRequest) =>\n chainTailFn(downstreamRequest, finalHandlerFn),\n ),\n );\n}\n\n/**\n * A multi-provider token that represents the array of registered\n * `HttpInterceptor` objects.\n *\n * @see [HTTP Guide](guide/http/interceptors)\n *\n * @publicApi\n */\nexport const HTTP_INTERCEPTORS = new InjectionToken<readonly HttpInterceptor[]>(\n typeof ngDevMode !== 'undefined' && ngDevMode ? 'HTTP_INTERCEPTORS' : '',\n);\n\n/**\n * A multi-provided token of `HttpInterceptorFn`s.\n */\nexport const HTTP_INTERCEPTOR_FNS = new InjectionToken<readonly HttpInterceptorFn[]>(\n typeof ngDevMode !== 'undefined' && ngDevMode ? 'HTTP_INTERCEPTOR_FNS' : '',\n {factory: () => []},\n);\n\n/**\n * A multi-provided token of `HttpInterceptorFn`s that are only set in root.\n */\nexport const HTTP_ROOT_INTERCEPTOR_FNS = new InjectionToken<readonly HttpInterceptorFn[]>(\n typeof ngDevMode !== 'undefined' && ngDevMode ? 'HTTP_ROOT_INTERCEPTOR_FNS' : '',\n);\n\n// TODO(atscott): We need a larger discussion about stability and what should contribute to stability.\n// Should the whole interceptor chain contribute to stability or just the backend request #55075?\n// Should HttpClient contribute to stability automatically at all?\nexport const REQUESTS_CONTRIBUTE_TO_STABILITY = new InjectionToken<boolean>(\n typeof ngDevMode !== 'undefined' && ngDevMode ? 'REQUESTS_CONTRIBUTE_TO_STABILITY' : '',\n // Providing a factory implies that the token is provided in root by default\n {factory: () => true},\n);\n\n/**\n * Creates an `HttpInterceptorFn` which lazily initializes an interceptor chain from the legacy\n * class-based interceptors and runs the request through it.\n */\nexport function legacyInterceptorFnFactory(): HttpInterceptorFn {\n let chain: ChainedInterceptorFn<any> | null = null;\n\n return (req, handler) => {\n if (chain === null) {\n const interceptors = inject(HTTP_INTERCEPTORS, {optional: true}) ?? [];\n // Note: interceptors are wrapped right-to-left so that final execution order is\n // left-to-right. That is, if `interceptors` is the array `[a, b, c]`, we want to\n // produce a chain that is conceptually `c(b(a(end)))`, which we build from the inside\n // out.\n chain = interceptors.reduceRight(\n adaptLegacyInterceptorToChain,\n interceptorChainEndFn as ChainedInterceptorFn<any>,\n );\n }\n\n const pendingTasks = inject(PendingTasks);\n const contributeToStability = inject(REQUESTS_CONTRIBUTE_TO_STABILITY);\n if (contributeToStability) {\n const removeTask = pendingTasks.add();\n return chain(req, handler).pipe(finalize(removeTask));\n } else {\n return chain(req, handler);\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.dev/license\n */\n\nimport {Observable} from 'rxjs';\n\nimport {HttpRequest} from './request';\nimport {HttpEvent} from './response';\nimport {FetchBackend} from './fetch';\nimport {HttpXhrBackend} from './xhr';\nimport {\n EnvironmentInjector,\n inject,\n Injectable,\n ɵConsole as Console,\n ɵformatRuntimeError as formatRuntimeError,\n PendingTasks,\n} from '@angular/core';\nimport {finalize} from 'rxjs/operators';\n\nimport {RuntimeErrorCode} from './errors';\nimport {\n ChainedInterceptorFn,\n HTTP_INTERCEPTOR_FNS,\n HTTP_ROOT_INTERCEPTOR_FNS,\n REQUESTS_CONTRIBUTE_TO_STABILITY,\n chainedInterceptorFn,\n interceptorChainEndFn,\n} from './interceptor';\n\n/**\n * A final `HttpHandler` which will dispatch the request via browser HTTP APIs to a backend.\n *\n * Interceptors sit between the `HttpClient` interface and the `HttpBackend`.\n *\n * When injected, `HttpBackend` dispatches requests directly to the backend, without going\n * through the interceptor chain.\n *\n * @publicApi\n */\n@Injectable({providedIn: 'root', useExisting: HttpXhrBackend})\nexport abstract class HttpBackend implements HttpHandler {\n abstract handle(req: HttpRequest<any>): Observable<HttpEvent<any>>;\n}\n\nlet fetchBackendWarningDisplayed = false;\n\n/** Internal function to reset the flag in tests */\nexport function resetFetchBackendWarningFlag() {\n fetchBackendWarningDisplayed = false;\n}\n\n@Injectable({providedIn: 'root'})\nexport class HttpInterceptorHandler implements HttpHandler {\n private chain: ChainedInterceptorFn<unknown> | null = null;\n private readonly pendingTasks = inject(PendingTasks);\n private readonly contributeToStability = inject(REQUESTS_CONTRIBUTE_TO_STABILITY);\n\n constructor(\n private backend: HttpBackend,\n private injector: EnvironmentInjector,\n ) {\n // We strongly recommend using fetch backend for HTTP calls when SSR is used\n // for an application. The logic below checks if that's the case and produces\n // a warning otherwise.\n if ((typeof ngDevMode === 'undefined' || ngDevMode) && !fetchBackendWarningDisplayed) {\n // This flag is necessary because provideHttpClientTesting() overrides the backend\n // even if `withFetch()` is used within the test. When the testing HTTP backend is provided,\n // no HTTP calls are actually performed during the test, so producing a warning would be\n // misleading.\n const isTestingBackend = (this.backend as any).isTestingBackend;\n\n if (\n typeof ngServerMode !== 'undefined' &&\n ngServerMode &&\n !(this.backend instanceof FetchBackend) &&\n !isTestingBackend\n ) {\n fetchBackendWarningDisplayed = true;\n injector\n .get(Console)\n .warn(\n formatRuntimeError(\n RuntimeErrorCode.NOT_USING_FETCH_BACKEND_IN_SSR,\n 'Angular detected that `HttpClient` is not configured ' +\n \"to use `fetch` APIs. It's strongly recommended to \" +\n 'enable `fetch` for applications that use Server-Side Rendering ' +\n 'for better performance and compatibility. ' +\n 'To enable `fetch`, add the `withFetch()` to the `provideHttpClient()` ' +\n 'call at the root of the application.',\n ),\n );\n }\n }\n }\n\n handle(initialRequest: HttpRequest<any>): Observable<HttpEvent<any>> {\n if (this.chain === null) {\n const dedupedInterceptorFns = Array.from(\n new Set([\n ...this.injector.get(HTTP_INTERCEPTOR_FNS),\n ...this.injector.get(HTTP_ROOT_INTERCEPTOR_FNS, []),\n ]),\n );\n\n // Note: interceptors are wrapped right-to-left so that final execution order is\n // left-to-right. That is, if `dedupedInterceptorFns` is the array `[a, b, c]`, we want to\n // produce a chain that is conceptually `c(b(a(end)))`, which we build from the inside\n // out.\n this.chain = dedupedInterceptorFns.reduceRight(\n (nextSequencedFn, interceptorFn) =>\n chainedInterceptorFn(nextSequencedFn, interceptorFn, this.injector),\n interceptorChainEndFn as ChainedInterceptorFn<unknown>,\n );\n }\n\n if (this.contributeToStability) {\n const removeTask = this.pendingTasks.add();\n return this.chain(initialRequest, (downstreamRequest) =>\n this.backend.handle(downstreamRequest),\n ).pipe(finalize(removeTask));\n } else {\n return this.chain(initialRequest, (downstreamRequest) =>\n this.backend.handle(downstreamRequest),\n );\n }\n }\n}\n\n/**\n * Transforms an `HttpRequest` into a stream of `HttpEvent`s, one of which will likely be a\n * `HttpResponse`.\n *\n * `HttpHandler` is injectable. When injected, the handler instance dispatches requests to the\n * first interceptor in the chain, which dispatches to the second, etc, eventually reaching the\n * `HttpBackend`.\n *\n * In an `HttpInterceptor`, the `HttpHandler` parameter is the next interceptor in the chain.\n *\n * @publicApi\n */\n@Injectable({providedIn: 'root', useExisting: HttpInterceptorHandler})\nexport abstract class HttpHandler {\n abstract handle(req: HttpRequest<any>): Observable<HttpEvent<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.dev/license\n */\n\nimport {Injectable, ɵRuntimeError as RuntimeError} from '@angular/core';\nimport {Observable, of} from 'rxjs';\nimport {concatMap, filter, map} from 'rxjs/operators';\n\nimport {HttpHandler} from './backend';\nimport {HttpContext} from './context';\nimport {HttpHeaders} from './headers';\nimport {HttpParams, HttpParamsOptions} from './params';\nimport {HttpRequest} from './request';\nimport {HttpEvent, HttpResponse} from './response';\nimport {RuntimeErrorCode} from './errors';\n\n/**\n * Constructs an instance of `HttpRequestOptions<T>` from a source `HttpMethodOptions` and\n * the given `body`. This function clones the object and adds the body.\n *\n * Note that the `responseType` *options* value is a String that identifies the\n * single data type of the response.\n * A single overload version of the method handles each response type.\n * The value of `responseType` cannot be a union, as the combined signature could imply.\n *\n */\nfunction addBody<T>(\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body' | 'events' | 'response';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n body: T | null,\n): any {\n return {\n body,\n headers: options.headers,\n context: options.context,\n observe: options.observe,\n params: options.params,\n reportProgress: options.reportProgress,\n responseType: options.responseType,\n withCredentials: options.withCredentials,\n credentials: options.credentials,\n transferCache: options.transferCache,\n timeout: options.timeout,\n keepalive: options.keepalive,\n priority: options.priority,\n cache: options.cache,\n mode: options.mode,\n redirect: options.redirect,\n integrity: options.integrity,\n referrer: options.referrer,\n referrerPolicy: options.referrerPolicy,\n };\n}\n\n/**\n * Performs HTTP requests.\n * This service is available as an injectable class, with methods to perform HTTP requests.\n * Each request method has multiple signatures, and the return type varies based on\n * the signature that is called (mainly the values of `observe` and `responseType`).\n *\n * Note that the `responseType` *options* value is a String that identifies the\n * single data type of the response.\n * A single overload version of the method handles each response type.\n * The value of `responseType` cannot be a union, as the combined signature could imply.\n *\n * @usageNotes\n *\n * ### HTTP Request Example\n *\n * ```ts\n * // GET heroes whose name contains search term\n * searchHeroes(term: string): observable<Hero[]>{\n *\n * const params = new HttpParams({fromString: 'name=term'});\n * return this.httpClient.request('GET', this.heroesUrl, {responseType:'json', params});\n * }\n * ```\n *\n * Alternatively, the parameter string can be used without invoking HttpParams\n * by directly joining to the URL.\n * ```ts\n * this.httpClient.request('GET', this.heroesUrl + '?' + 'name=term', {responseType:'json'});\n * ```\n *\n *\n * ### JSONP Example\n * ```ts\n * requestJsonp(url, callback = 'callback') {\n * return this.httpClient.jsonp(this.heroesURL, callback);\n * }\n * ```\n *\n * ### PATCH Example\n * ```ts\n * // PATCH one of the heroes' name\n * patchHero (id: number, heroName: string): Observable<{}> {\n * const url = `${this.heroesUrl}/${id}`; // PATCH api/heroes/42\n * return this.httpClient.patch(url, {name: heroName}, httpOptions)\n * .pipe(catchError(this.handleError('patchHero')));\n * }\n * ```\n *\n * @see [HTTP Guide](guide/http)\n * @see [HTTP Request](api/common/http/HttpRequest)\n *\n * @publicApi\n */\n@Injectable({providedIn: 'root'})\nexport class HttpClient {\n constructor(private handler: HttpHandler) {}\n\n /**\n * Sends an `HttpRequest` and returns a stream of `HttpEvent`s.\n *\n * @return An `Observable` of the response, with the response body as a stream of `HttpEvent`s.\n */\n request<R>(req: HttpRequest<any>): Observable<HttpEvent<R>>;\n\n /**\n * Constructs a request that interprets the body as an `ArrayBuffer` and returns the response in\n * an `ArrayBuffer`.\n *\n * @param method The HTTP method.\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n *\n * @return An `Observable` of the response, with the response body as an `ArrayBuffer`.\n */\n request(\n method: string,\n url: string,\n options: {\n body?: any;\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<ArrayBuffer>;\n\n /**\n * Constructs a request that interprets the body as a blob and returns\n * the response as a blob.\n *\n * @param method The HTTP method.\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response, with the response body of type `Blob`.\n */\n request(\n method: string,\n url: string,\n options: {\n body?: any;\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<Blob>;\n\n /**\n * Constructs a request that interprets the body as a text string and\n * returns a string value.\n *\n * @param method The HTTP method.\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response, with the response body of type string.\n */\n request(\n method: string,\n url: string,\n options: {\n body?: any;\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<string>;\n\n /**\n * Constructs a request that interprets the body as an `ArrayBuffer` and returns the\n * the full event stream.\n *\n * @param method The HTTP method.\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response, with the response body as an array of `HttpEvent`s for\n * the request.\n */\n request(\n method: string,\n url: string,\n options: {\n body?: any;\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n observe: 'events';\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<ArrayBuffer>>;\n\n /**\n * Constructs a request that interprets the body as a `Blob` and returns\n * the full event stream.\n *\n * @param method The HTTP method.\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of all `HttpEvent`s for the request,\n * with the response body of type `Blob`.\n */\n request(\n method: string,\n url: string,\n options: {\n body?: any;\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<Blob>>;\n\n /**\n * Constructs a request which interprets the body as a text string and returns the full event\n * stream.\n *\n * @param method The HTTP method.\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of all `HttpEvent`s for the request,\n * with the response body of type string.\n */\n request(\n method: string,\n url: string,\n options: {\n body?: any;\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<string>>;\n\n /**\n * Constructs a request which interprets the body as a JavaScript object and returns the full\n * event stream.\n *\n * @param method The HTTP method.\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of all `HttpEvent`s for the request,\n * with the response body of type `Object`.\n */\n request(\n method: string,\n url: string,\n options: {\n body?: any;\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n reportProgress?: boolean;\n observe: 'events';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<any>>;\n\n /**\n * Constructs a request which interprets the body as a JavaScript object and returns the full\n * event stream.\n *\n * @param method The HTTP method.\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of all `HttpEvent`s for the request,\n * with the response body of type `R`.\n */\n request<R>(\n method: string,\n url: string,\n options: {\n body?: any;\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n reportProgress?: boolean;\n observe: 'events';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<R>>;\n\n /**\n * Constructs a request which interprets the body as an `ArrayBuffer`\n * and returns the full `HttpResponse`.\n *\n * @param method The HTTP method.\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse`, with the response body as an `ArrayBuffer`.\n */\n request(\n method: string,\n url: string,\n options: {\n body?: any;\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<ArrayBuffer>>;\n\n /**\n * Constructs a request which interprets the body as a `Blob` and returns the full `HttpResponse`.\n *\n * @param method The HTTP method.\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse`, with the response body of type `Blob`.\n */\n request(\n method: string,\n url: string,\n options: {\n body?: any;\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<Blob>>;\n\n /**\n * Constructs a request which interprets the body as a text stream and returns the full\n * `HttpResponse`.\n *\n * @param method The HTTP method.\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the HTTP response, with the response body of type string.\n */\n request(\n method: string,\n url: string,\n options: {\n body?: any;\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<string>>;\n\n /**\n * Constructs a request which interprets the body as a JavaScript object and returns the full\n * `HttpResponse`.\n *\n * @param method The HTTP method.\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the full `HttpResponse`,\n * with the response body of type `Object`.\n */\n request(\n method: string,\n url: string,\n options: {\n body?: any;\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n reportProgress?: boolean;\n observe: 'response';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<Object>>;\n\n /**\n * Constructs a request which interprets the body as a JavaScript object and returns\n * the full `HttpResponse` with the response body in the requested type.\n *\n * @param method The HTTP method.\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the full `HttpResponse`, with the response body of type `R`.\n */\n request<R>(\n method: string,\n url: string,\n options: {\n body?: any;\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n reportProgress?: boolean;\n observe: 'response';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n },\n ): Observable<HttpResponse<R>>;\n\n /**\n * Constructs a request which interprets the body as a JavaScript object and returns the full\n * `HttpResponse` as a JavaScript object.\n *\n * @param method The HTTP method.\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse`, with the response body of type `Object`.\n */\n request(\n method: string,\n url: string,\n options?: {\n body?: any;\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n responseType?: 'json';\n reportProgress?: boolean;\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<Object>;\n\n /**\n * Constructs a request which interprets the body as a JavaScript object\n * with the response body of the requested type.\n *\n * @param method The HTTP method.\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse`, with the response body of type `R`.\n */\n request<R>(\n method: string,\n url: string,\n options?: {\n body?: any;\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n responseType?: 'json';\n reportProgress?: boolean;\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<R>;\n\n /**\n * Constructs a request where response type and requested observable are not known statically.\n *\n * @param method The HTTP method.\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the requested response, with body of type `any`.\n */\n request(\n method: string,\n url: string,\n options?: {\n body?: any;\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n observe?: 'body' | 'events' | 'response';\n reportProgress?: boolean;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<any>;\n\n /**\n * Constructs an observable for a generic HTTP request that, when subscribed,\n * fires the request through the chain of registered interceptors and on to the\n * server.\n *\n * You can pass an `HttpRequest` directly as the only parameter. In this case,\n * the call returns an observable of the raw `HttpEvent` stream.\n *\n * Alternatively you can pass an HTTP method as the first parameter,\n * a URL string as the second, and an options hash containing the request body as the third.\n * See `addBody()`. In this case, the specified `responseType` and `observe` options determine the\n * type of returned observable.\n * * The `responseType` value determines how a successful response body is parsed.\n * * If `responseType` is the default `json`, you can pass a type interface for the resulting\n * object as a type parameter to the call.\n *\n * The `observe` value determines the return type, according to what you are interested in\n * observing.\n * * An `observe` value of events returns an observable of the raw `HttpEvent` stream, including\n * progress events by default.\n * * An `observe` value of response returns an observable of `HttpResponse<T>`,\n * where the `T` parameter depends on the `responseType` and any optionally provided type\n * parameter.\n * * An `observe` value of body returns an observable of `<T>` with the same `T` body type.\n *\n */\n request(\n first: string | HttpRequest<any>,\n url?: string,\n options: {\n body?: any;\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body' | 'events' | 'response';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n } = {},\n ): Observable<any> {\n let req: HttpRequest<any>;\n // First, check whether the primary argument is an instance of `HttpRequest`.\n if (first instanceof HttpRequest) {\n // It is. The other arguments must be undefined (per the signatures) and can be\n // ignored.\n req = first;\n } else {\n // It's a string, so it represents a URL. Construct a request based on it,\n // and incorporate the remaining arguments (assuming `GET` unless a method is\n // provided.\n\n // Figure out the headers.\n let headers: HttpHeaders | undefined = undefined;\n if (options.headers instanceof HttpHeaders) {\n headers = options.headers;\n } else {\n headers = new HttpHeaders(options.headers);\n }\n\n // Sort out parameters.\n let params: HttpParams | undefined = undefined;\n if (!!options.params) {\n if (options.params instanceof HttpParams) {\n params = options.params;\n } else {\n params = new HttpParams({fromObject: options.params} as HttpParamsOptions);\n }\n }\n // Construct the request.\n req = new HttpRequest(first, url!, options.body !== undefined ? options.body : null, {\n headers,\n context: options.context,\n params,\n reportProgress: options.reportProgress,\n // By default, JSON is assumed to be returned for all calls.\n responseType: options.responseType || 'json',\n withCredentials: options.withCredentials,\n transferCache: options.transferCache,\n keepalive: options.keepalive,\n priority: options.priority,\n cache: options.cache,\n mode: options.mode,\n redirect: options.redirect,\n credentials: options.credentials,\n referrer: options.referrer,\n referrerPolicy: options.referrerPolicy,\n integrity: options.integrity,\n timeout: options.timeout,\n });\n }\n // Start with an Observable.of() the initial request, and run the handler (which\n // includes all interceptors) inside a concatMap(). This way, the handler runs\n // inside an Observable chain, which causes interceptors to be re-run on every\n // subscription (this also makes retries re-run the handler, including interceptors).\n const events$: Observable<HttpEvent<any>> = of(req).pipe(\n concatMap((req: HttpRequest<any>) => this.handler.handle(req)),\n );\n\n // If coming via the API signature which accepts a previously constructed HttpRequest,\n // the only option is to get the event stream. Otherwise, return the event stream if\n // that is what was requested.\n if (first instanceof HttpRequest || options.observe === 'events') {\n return events$;\n }\n\n // The requested stream contains either the full response or the body. In either\n // case, the first step is to filter the event stream to extract a stream of\n // responses(s).\n const res$: Observable<HttpResponse<any>> = <Observable<HttpResponse<any>>>(\n events$.pipe(filter((event: HttpEvent<any>) => event instanceof HttpResponse))\n );\n\n // Decide which stream to return.\n switch (options.observe || 'body') {\n case 'body':\n // The requested stream is the body. Map the response stream to the response\n // body. This could be done more simply, but a misbehaving interceptor might\n // transform the response body into a different format and ignore the requested\n // responseType. Guard against this by validating that the response is of the\n // requested type.\n switch (req.responseType) {\n case 'arraybuffer':\n return res$.pipe(\n map((res: HttpResponse<any>) => {\n // Validate that the body is an ArrayBuffer.\n if (res.body !== null && !(res.body instanceof ArrayBuffer)) {\n throw new RuntimeError(\n RuntimeErrorCode.RESPONSE_IS_NOT_AN_ARRAY_BUFFER,\n ngDevMode && 'Response is not an ArrayBuffer.',\n );\n }\n return res.body;\n }),\n );\n case 'blob':\n return res$.pipe(\n map((res: HttpResponse<any>) => {\n // Validate that the body is a Blob.\n if (res.body !== null && !(res.body instanceof Blob)) {\n throw new RuntimeError(\n RuntimeErrorCode.RESPONSE_IS_NOT_A_BLOB,\n ngDevMode && 'Response is not a Blob.',\n );\n }\n return res.body;\n }),\n );\n case 'text':\n return res$.pipe(\n map((res: HttpResponse<any>) => {\n // Validate that the body is a string.\n if (res.body !== null && typeof res.body !== 'string') {\n throw new RuntimeError(\n RuntimeErrorCode.RESPONSE_IS_NOT_A_STRING,\n ngDevMode && 'Response is not a string.',\n );\n }\n return res.body;\n }),\n );\n case 'json':\n default:\n // No validation needed for JSON responses, as they can be of any type.\n return res$.pipe(map((res: HttpResponse<any>) => res.body));\n }\n case 'response':\n // The response stream was requested directly, so return it.\n return res$;\n default:\n // Guard against new future observe types being added.\n throw new RuntimeError(\n RuntimeErrorCode.UNHANDLED_OBSERVE_TYPE,\n ngDevMode && `Unreachable: unhandled observe type ${options.observe}}`,\n );\n }\n }\n\n /**\n * Constructs a `DELETE` request that interprets the body as an `ArrayBuffer`\n * and returns the response as an `ArrayBuffer`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response body as an `ArrayBuffer`.\n */\n delete(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n body?: any | null;\n },\n ): Observable<ArrayBuffer>;\n\n /**\n * Constructs a `DELETE` request that interprets the body as a `Blob` and returns\n * the response as a `Blob`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response body as a `Blob`.\n */\n delete(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n body?: any | null;\n },\n ): Observable<Blob>;\n\n /**\n * Constructs a `DELETE` request that interprets the body as a text string and returns\n * a string.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response, with the response body of type string.\n */\n delete(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n body?: any | null;\n },\n ): Observable<string>;\n\n /**\n * Constructs a `DELETE` request that interprets the body as an `ArrayBuffer`\n * and returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of all `HttpEvent`s for the request,\n * with response body as an `ArrayBuffer`.\n */\n delete(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n body?: any | null;\n },\n ): Observable<HttpEvent<ArrayBuffer>>;\n\n /**\n * Constructs a `DELETE` request that interprets the body as a `Blob`\n * and returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of all the `HttpEvent`s for the request, with the response body as a\n * `Blob`.\n */\n delete(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n body?: any | null;\n },\n ): Observable<HttpEvent<Blob>>;\n\n /**\n * Constructs a `DELETE` request that interprets the body as a text string\n * and returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of all `HttpEvent`s for the request, with the response\n * body of type string.\n */\n delete(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n body?: any | null;\n },\n ): Observable<HttpEvent<string>>;\n\n /**\n * Constructs a `DELETE` request that interprets the body as JSON\n * and returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of all `HttpEvent`s for the request, with response body of\n * type `Object`.\n */\n delete(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n body?: any | null;\n },\n ): Observable<HttpEvent<Object>>;\n\n /**\n * Constructs a `DELETE`request that interprets the body as JSON\n * and returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of all the `HttpEvent`s for the request, with a response\n * body in the requested type.\n */\n delete<T>(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | (string | number | boolean)[]>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n body?: any | null;\n },\n ): Observable<HttpEvent<T>>;\n\n /**\n * Constructs a `DELETE` request that interprets the body as an `ArrayBuffer` and returns\n * the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the full `HttpResponse`, with the response body as an `ArrayBuffer`.\n */\n delete(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n body?: any | null;\n },\n ): Observable<HttpResponse<ArrayBuffer>>;\n\n /**\n * Constructs a `DELETE` request that interprets the body as a `Blob` and returns the full\n * `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse`, with the response body of type `Blob`.\n */\n delete(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n body?: any | null;\n },\n ): Observable<HttpResponse<Blob>>;\n\n /**\n * Constructs a `DELETE` request that interprets the body as a text stream and\n * returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the full `HttpResponse`, with the response body of type string.\n */\n delete(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n body?: any | null;\n },\n ): Observable<HttpResponse<string>>;\n\n /**\n * Constructs a `DELETE` request the interprets the body as a JavaScript object and returns\n * the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse`, with the response body of type `Object`.\n *\n */\n delete(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n body?: any | null;\n },\n ): Observable<HttpResponse<Object>>;\n\n /**\n * Constructs a `DELETE` request that interprets the body as JSON\n * and returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse`, with the response body of the requested type.\n */\n delete<T>(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n body?: any | null;\n },\n ): Observable<HttpResponse<T>>;\n\n /**\n * Constructs a `DELETE` request that interprets the body as JSON and\n * returns the response body as an object parsed from JSON.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response, with the response body of type `Object`.\n */\n delete(\n url: string,\n options?: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n body?: any | null;\n },\n ): Observable<Object>;\n\n /**\n * Constructs a DELETE request that interprets the body as JSON and returns\n * the response in a given type.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse`, with response body in the requested type.\n */\n delete<T>(\n url: string,\n options?: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n body?: any | null;\n },\n ): Observable<T>;\n\n /**\n * Constructs an observable that, when subscribed, causes the configured\n * `DELETE` request to execute on the server. See the individual overloads for\n * details on the return type.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n */\n delete(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body' | 'events' | 'response';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n body?: any | null;\n } = {},\n ): Observable<any> {\n return this.request<any>('DELETE', url, options as any);\n }\n\n /**\n * Constructs a `GET` request that interprets the body as an `ArrayBuffer` and returns the\n * response in an `ArrayBuffer`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response, with the response body as an `ArrayBuffer`.\n */\n get(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<ArrayBuffer>;\n\n /**\n * Constructs a `GET` request that interprets the body as a `Blob`\n * and returns the response as a `Blob`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response, with the response body as a `Blob`.\n */\n get(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<Blob>;\n\n /**\n * Constructs a `GET` request that interprets the body as a text string\n * and returns the response as a string value.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response, with the response body of type string.\n */\n get(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<string>;\n\n /**\n * Constructs a `GET` request that interprets the body as an `ArrayBuffer` and returns\n * the full event stream.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of all `HttpEvent`s for the request, with the response\n * body as an `ArrayBuffer`.\n */\n get(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<ArrayBuffer>>;\n\n /**\n * Constructs a `GET` request that interprets the body as a `Blob` and\n * returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response, with the response body as a `Blob`.\n */\n get(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<Blob>>;\n\n /**\n * Constructs a `GET` request that interprets the body as a text string and returns\n * the full event stream.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response, with the response body of type string.\n */\n get(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<string>>;\n\n /**\n * Constructs a `GET` request that interprets the body as JSON\n * and returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response, with the response body of type `Object`.\n */\n get(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<Object>>;\n\n /**\n * Constructs a `GET` request that interprets the body as JSON and returns the full\n * event stream.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response, with a response body in the requested type.\n */\n get<T>(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<T>>;\n\n /**\n * Constructs a `GET` request that interprets the body as an `ArrayBuffer` and\n * returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with the response body as an `ArrayBuffer`.\n */\n get(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<ArrayBuffer>>;\n\n /**\n * Constructs a `GET` request that interprets the body as a `Blob` and\n * returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with the response body as a `Blob`.\n */\n get(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<Blob>>;\n\n /**\n * Constructs a `GET` request that interprets the body as a text stream and\n * returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with the response body of type string.\n */\n get(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<string>>;\n\n /**\n * Constructs a `GET` request that interprets the body as JSON and\n * returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the full `HttpResponse`,\n * with the response body of type `Object`.\n */\n get(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<Object>>;\n\n /**\n * Constructs a `GET` request that interprets the body as JSON and\n * returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the full `HttpResponse` for the request,\n * with a response body in the requested type.\n */\n get<T>(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<T>>;\n\n /**\n * Constructs a `GET` request that interprets the body as JSON and\n * returns the response body as an object parsed from JSON.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n *\n * @return An `Observable` of the response body as a JavaScript object.\n */\n get(\n url: string,\n options?: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<Object>;\n\n /**\n * Constructs a `GET` request that interprets the body as JSON and returns\n * the response body in a given type.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse`, with a response body in the requested type.\n */\n get<T>(\n url: string,\n options?: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<T>;\n\n /**\n * Constructs an observable that, when subscribed, causes the configured\n * `GET` request to execute on the server. See the individual overloads for\n * details on the return type.\n */\n get(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body' | 'events' | 'response';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n } = {},\n ): Observable<any> {\n return this.request<any>('GET', url, options as any);\n }\n\n /**\n * Constructs a `HEAD` request that interprets the body as an `ArrayBuffer` and\n * returns the response as an `ArrayBuffer`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response, with the response body as an `ArrayBuffer`.\n */\n head(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<ArrayBuffer>;\n\n /**\n * Constructs a `HEAD` request that interprets the body as a `Blob` and returns\n * the response as a `Blob`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response, with the response body as a `Blob`.\n */\n\n head(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<Blob>;\n\n /**\n * Constructs a `HEAD` request that interprets the body as a text string and returns the response\n * as a string value.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response, with the response body of type string.\n */\n head(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<string>;\n\n /**\n * Constructs a `HEAD` request that interprets the body as an `ArrayBuffer`\n * and returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of all `HttpEvent`s for the request,\n * with the response body as an `ArrayBuffer`.\n */\n head(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<ArrayBuffer>>;\n\n /**\n * Constructs a `HEAD` request that interprets the body as a `Blob` and\n * returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of all `HttpEvent`s for the request,\n * with the response body as a `Blob`.\n */\n head(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<Blob>>;\n\n /**\n * Constructs a `HEAD` request that interprets the body as a text string\n * and returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of all `HttpEvent`s for the request, with the response body of type\n * string.\n */\n head(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<string>>;\n\n /**\n * Constructs a `HEAD` request that interprets the body as JSON\n * and returns the full HTTP event stream.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of all `HttpEvent`s for the request, with a response body of\n * type `Object`.\n */\n head(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<Object>>;\n\n /**\n * Constructs a `HEAD` request that interprets the body as JSON and\n * returns the full event stream.\n *\n * @return An `Observable` of all the `HttpEvent`s for the request,\n * with a response body in the requested type.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n */\n head<T>(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<T>>;\n\n /**\n * Constructs a `HEAD` request that interprets the body as an `ArrayBuffer`\n * and returns the full HTTP response.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with the response body as an `ArrayBuffer`.\n */\n head(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<ArrayBuffer>>;\n\n /**\n * Constructs a `HEAD` request that interprets the body as a `Blob` and returns\n * the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with the response body as a blob.\n */\n head(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<Blob>>;\n\n /**\n * Constructs a `HEAD` request that interprets the body as text stream\n * and returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with the response body of type string.\n */\n head(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<string>>;\n\n /**\n * Constructs a `HEAD` request that interprets the body as JSON and\n * returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with the response body of type `Object`.\n */\n head(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<Object>>;\n\n /**\n * Constructs a `HEAD` request that interprets the body as JSON\n * and returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with a response body of the requested type.\n */\n head<T>(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<T>>;\n\n /**\n\n * Constructs a `HEAD` request that interprets the body as JSON and\n * returns the response body as an object parsed from JSON.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the response, with the response body as an object parsed from JSON.\n */\n head(\n url: string,\n options?: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<Object>;\n\n /**\n * Constructs a `HEAD` request that interprets the body as JSON and returns\n * the response in a given type.\n *\n * @param url The endpoint URL.\n * @param options The HTTP options to send with the request.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with a response body of the given type.\n */\n head<T>(\n url: string,\n options?: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<T>;\n\n /**\n * Constructs an observable that, when subscribed, causes the configured\n * `HEAD` request to execute on the server. The `HEAD` method returns\n * meta information about the resource without transferring the\n * resource itself. See the individual overloads for\n * details on the return type.\n */\n head(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body' | 'events' | 'response';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n } = {},\n ): Observable<any> {\n return this.request<any>('HEAD', url, options as any);\n }\n\n /**\n * Constructs a `JSONP` request for the given URL and name of the callback parameter.\n *\n * @param url The resource URL.\n * @param callbackParam The callback function name.\n *\n * @return An `Observable` of the response object, with response body as an object.\n */\n jsonp(url: string, callbackParam: string): Observable<Object>;\n\n /**\n * Constructs a `JSONP` request for the given URL and name of the callback parameter.\n *\n * @param url The resource URL.\n * @param callbackParam The callback function name.\n *\n * You must install a suitable interceptor, such as one provided by `HttpClientJsonpModule`.\n * If no such interceptor is reached,\n * then the `JSONP` request can be rejected by the configured backend.\n *\n * @return An `Observable` of the response object, with response body in the requested type.\n */\n jsonp<T>(url: string, callbackParam: string): Observable<T>;\n\n /**\n * Constructs an `Observable` that, when subscribed, causes a request with the special method\n * `JSONP` to be dispatched via the interceptor pipeline.\n * The [JSONP pattern](https://en.wikipedia.org/wiki/JSONP) works around limitations of certain\n * API endpoints that don't support newer,\n * and preferable [CORS](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS) protocol.\n * JSONP treats the endpoint API as a JavaScript file and tricks the browser to process the\n * requests even if the API endpoint is not located on the same domain (origin) as the client-side\n * application making the request.\n * The endpoint API must support JSONP callback for JSONP requests to work.\n * The resource API returns the JSON response wrapped in a callback function.\n * You can pass the callback function name as one of the query parameters.\n * Note that JSONP requests can only be used with `GET` requests.\n *\n * @param url The resource URL.\n * @param callbackParam The callback function name.\n *\n */\n jsonp<T>(url: string, callbackParam: string): Observable<T> {\n return this.request<any>('JSONP', url, {\n params: new HttpParams().append(callbackParam, 'JSONP_CALLBACK'),\n observe: 'body',\n responseType: 'json',\n });\n }\n\n /**\n * Constructs an `OPTIONS` request that interprets the body as an\n * `ArrayBuffer` and returns the response as an `ArrayBuffer`.\n *\n * @param url The endpoint URL.\n * @param options HTTP options.\n *\n * @return An `Observable` of the response, with the response body as an `ArrayBuffer`.\n */\n options(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<ArrayBuffer>;\n\n /**\n * Constructs an `OPTIONS` request that interprets the body as a `Blob` and returns\n * the response as a `Blob`.\n *\n * @param url The endpoint URL.\n * @param options HTTP options.\n *\n * @return An `Observable` of the response, with the response body as a `Blob`.\n */\n options(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<Blob>;\n\n /**\n * Constructs an `OPTIONS` request that interprets the body as a text string and\n * returns a string value.\n *\n * @param url The endpoint URL.\n * @param options HTTP options.\n *\n * @return An `Observable` of the response, with the response body of type string.\n */\n options(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<string>;\n\n /**\n * Constructs an `OPTIONS` request that interprets the body as an `ArrayBuffer`\n * and returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param options HTTP options.\n *\n * @return An `Observable` of all `HttpEvent`s for the request,\n * with the response body as an `ArrayBuffer`.\n */\n options(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpEvent<ArrayBuffer>>;\n\n /**\n * Constructs an `OPTIONS` request that interprets the body as a `Blob` and\n * returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param options HTTP options.\n *\n * @return An `Observable` of all `HttpEvent`s for the request,\n * with the response body as a `Blob`.\n */\n options(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpEvent<Blob>>;\n\n /**\n * Constructs an `OPTIONS` request that interprets the body as a text string\n * and returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param options HTTP options.\n *\n * @return An `Observable` of all the `HttpEvent`s for the request,\n * with the response body of type string.\n */\n options(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpEvent<string>>;\n\n /**\n * Constructs an `OPTIONS` request that interprets the body as JSON\n * and returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param options HTTP options.\n *\n * @return An `Observable` of all the `HttpEvent`s for the request with the response\n * body of type `Object`.\n */\n options(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpEvent<Object>>;\n\n /**\n * Constructs an `OPTIONS` request that interprets the body as JSON and\n * returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param options HTTP options.\n *\n * @return An `Observable` of all the `HttpEvent`s for the request,\n * with a response body in the requested type.\n */\n options<T>(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpEvent<T>>;\n\n /**\n * Constructs an `OPTIONS` request that interprets the body as an `ArrayBuffer`\n * and returns the full HTTP response.\n *\n * @param url The endpoint URL.\n * @param options HTTP options.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with the response body as an `ArrayBuffer`.\n */\n options(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpResponse<ArrayBuffer>>;\n\n /**\n * Constructs an `OPTIONS` request that interprets the body as a `Blob`\n * and returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options HTTP options.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with the response body as a `Blob`.\n */\n options(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpResponse<Blob>>;\n\n /**\n * Constructs an `OPTIONS` request that interprets the body as text stream\n * and returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options HTTP options.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with the response body of type string.\n */\n options(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpResponse<string>>;\n\n /**\n * Constructs an `OPTIONS` request that interprets the body as JSON\n * and returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options HTTP options.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with the response body of type `Object`.\n */\n options(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpResponse<Object>>;\n\n /**\n * Constructs an `OPTIONS` request that interprets the body as JSON and\n * returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param options HTTP options.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with a response body in the requested type.\n */\n options<T>(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpResponse<T>>;\n\n /**\n\n * Constructs an `OPTIONS` request that interprets the body as JSON and returns the\n * response body as an object parsed from JSON.\n *\n * @param url The endpoint URL.\n * @param options HTTP options.\n *\n * @return An `Observable` of the response, with the response body as an object parsed from JSON.\n */\n options(\n url: string,\n options?: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<Object>;\n\n /**\n * Constructs an `OPTIONS` request that interprets the body as JSON and returns the\n * response in a given type.\n *\n * @param url The endpoint URL.\n * @param options HTTP options.\n *\n * @return An `Observable` of the `HttpResponse`, with a response body of the given type.\n */\n options<T>(\n url: string,\n options?: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<T>;\n\n /**\n * Constructs an `Observable` that, when subscribed, causes the configured\n * `OPTIONS` request to execute on the server. This method allows the client\n * to determine the supported HTTP methods and other capabilities of an endpoint,\n * without implying a resource action. See the individual overloads for\n * details on the return type.\n */\n options(\n url: string,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body' | 'events' | 'response';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n } = {},\n ): Observable<any> {\n return this.request<any>('OPTIONS', url, options as any);\n }\n\n /**\n * Constructs a `PATCH` request that interprets the body as an `ArrayBuffer` and returns\n * the response as an `ArrayBuffer`.\n *\n * @param url The endpoint URL.\n * @param body The resources to edit.\n * @param options HTTP options.\n *\n * @return An `Observable` of the response, with the response body as an `ArrayBuffer`.\n */\n patch(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<ArrayBuffer>;\n\n /**\n * Constructs a `PATCH` request that interprets the body as a `Blob` and returns the response\n * as a `Blob`.\n *\n * @param url The endpoint URL.\n * @param body The resources to edit.\n * @param options HTTP options.\n *\n * @return An `Observable` of the response, with the response body as a `Blob`.\n */\n patch(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<Blob>;\n\n /**\n * Constructs a `PATCH` request that interprets the body as a text string and\n * returns the response as a string value.\n *\n * @param url The endpoint URL.\n * @param body The resources to edit.\n * @param options HTTP options.\n *\n * @return An `Observable` of the response, with a response body of type string.\n */\n patch(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<string>;\n\n /**\n * Constructs a `PATCH` request that interprets the body as an `ArrayBuffer` and\n * returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param body The resources to edit.\n * @param options HTTP options.\n *\n * @return An `Observable` of all the `HttpEvent`s for the request,\n * with the response body as an `ArrayBuffer`.\n */\n\n patch(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpEvent<ArrayBuffer>>;\n\n /**\n * Constructs a `PATCH` request that interprets the body as a `Blob`\n * and returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param body The resources to edit.\n * @param options HTTP options.\n *\n * @return An `Observable` of all the `HttpEvent`s for the request, with the\n * response body as `Blob`.\n */\n patch(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpEvent<Blob>>;\n\n /**\n * Constructs a `PATCH` request that interprets the body as a text string and\n * returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param body The resources to edit.\n * @param options HTTP options.\n *\n * @return An `Observable` of all the `HttpEvent`s for the request, with a\n * response body of type string.\n */\n patch(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpEvent<string>>;\n\n /**\n * Constructs a `PATCH` request that interprets the body as JSON\n * and returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param body The resources to edit.\n * @param options HTTP options.\n *\n * @return An `Observable` of all the `HttpEvent`s for the request,\n * with a response body of type `Object`.\n */\n patch(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpEvent<Object>>;\n\n /**\n * Constructs a `PATCH` request that interprets the body as JSON\n * and returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param body The resources to edit.\n * @param options HTTP options.\n *\n * @return An `Observable` of all the `HttpEvent`s for the request,\n * with a response body in the requested type.\n */\n patch<T>(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpEvent<T>>;\n\n /**\n * Constructs a `PATCH` request that interprets the body as an `ArrayBuffer`\n * and returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param body The resources to edit.\n * @param options HTTP options.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with the response body as an `ArrayBuffer`.\n */\n patch(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpResponse<ArrayBuffer>>;\n\n /**\n * Constructs a `PATCH` request that interprets the body as a `Blob` and returns the full\n * `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param body The resources to edit.\n * @param options HTTP options.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with the response body as a `Blob`.\n */\n patch(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpResponse<Blob>>;\n\n /**\n * Constructs a `PATCH` request that interprets the body as a text stream and returns the\n * full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param body The resources to edit.\n * @param options HTTP options.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with a response body of type string.\n */\n patch(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpResponse<string>>;\n\n /**\n * Constructs a `PATCH` request that interprets the body as JSON\n * and returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param body The resources to edit.\n * @param options HTTP options.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with a response body in the requested type.\n */\n patch(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpResponse<Object>>;\n\n /**\n * Constructs a `PATCH` request that interprets the body as JSON\n * and returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param body The resources to edit.\n * @param options HTTP options.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with a response body in the given type.\n */\n patch<T>(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpResponse<T>>;\n\n /**\n\n * Constructs a `PATCH` request that interprets the body as JSON and\n * returns the response body as an object parsed from JSON.\n *\n * @param url The endpoint URL.\n * @param body The resources to edit.\n * @param options HTTP options.\n *\n * @return An `Observable` of the response, with the response body as an object parsed from JSON.\n */\n patch(\n url: string,\n body: any | null,\n options?: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<Object>;\n\n /**\n * Constructs a `PATCH` request that interprets the body as JSON\n * and returns the response in a given type.\n *\n * @param url The endpoint URL.\n * @param body The resources to edit.\n * @param options HTTP options.\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with a response body in the given type.\n */\n patch<T>(\n url: string,\n body: any | null,\n options?: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<T>;\n\n /**\n * Constructs an observable that, when subscribed, causes the configured\n * `PATCH` request to execute on the server. See the individual overloads for\n * details on the return type.\n */\n patch(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body' | 'events' | 'response';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n } = {},\n ): Observable<any> {\n return this.request<any>('PATCH', url, addBody(options, body));\n }\n\n /**\n * Constructs a `POST` request that interprets the body as an `ArrayBuffer` and returns\n * an `ArrayBuffer`.\n *\n * @param url The endpoint URL.\n * @param body The content to replace with.\n * @param options HTTP options.\n *\n * @return An `Observable` of the response, with the response body as an `ArrayBuffer`.\n */\n post(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<ArrayBuffer>;\n\n /**\n * Constructs a `POST` request that interprets the body as a `Blob` and returns the\n * response as a `Blob`.\n *\n * @param url The endpoint URL.\n * @param body The content to replace with.\n * @param options HTTP options\n *\n * @return An `Observable` of the response, with the response body as a `Blob`.\n */\n post(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<Blob>;\n\n /**\n * Constructs a `POST` request that interprets the body as a text string and\n * returns the response as a string value.\n *\n * @param url The endpoint URL.\n * @param body The content to replace with.\n * @param options HTTP options\n *\n * @return An `Observable` of the response, with a response body of type string.\n */\n post(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<string>;\n\n /**\n * Constructs a `POST` request that interprets the body as an `ArrayBuffer` and\n * returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param body The content to replace with.\n * @param options HTTP options\n *\n * @return An `Observable` of all `HttpEvent`s for the request,\n * with the response body as an `ArrayBuffer`.\n */\n post(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<ArrayBuffer>>;\n\n /**\n * Constructs a `POST` request that interprets the body as a `Blob`\n * and returns the response in an observable of the full event stream.\n *\n * @param url The endpoint URL.\n * @param body The content to replace with.\n * @param options HTTP options\n *\n * @return An `Observable` of all `HttpEvent`s for the request, with the response body as `Blob`.\n */\n post(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<Blob>>;\n\n /**\n * Constructs a `POST` request that interprets the body as a text string and returns the full\n * event stream.\n *\n * @param url The endpoint URL.\n * @param body The content to replace with.\n * @param options HTTP options\n *\n * @return An `Observable` of all `HttpEvent`s for the request,\n * with a response body of type string.\n */\n post(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<string>>;\n\n /**\n * Constructs a POST request that interprets the body as JSON and returns the full\n * event stream.\n *\n * @param url The endpoint URL.\n * @param body The content to replace with.\n * @param options HTTP options\n *\n * @return An `Observable` of all `HttpEvent`s for the request,\n * with a response body of type `Object`.\n */\n post(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<Object>>;\n\n /**\n * Constructs a POST request that interprets the body as JSON and returns the full\n * event stream.\n *\n * @param url The endpoint URL.\n * @param body The content to replace with.\n * @param options HTTP options\n *\n * @return An `Observable` of all `HttpEvent`s for the request,\n * with a response body in the requested type.\n */\n post<T>(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpEvent<T>>;\n\n /**\n * Constructs a POST request that interprets the body as an `ArrayBuffer`\n * and returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param body The content to replace with.\n * @param options HTTP options\n *\n * @return An `Observable` of the `HttpResponse` for the request, with the response body as an\n * `ArrayBuffer`.\n */\n post(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<ArrayBuffer>>;\n\n /**\n * Constructs a `POST` request that interprets the body as a `Blob` and returns the full\n * `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param body The content to replace with.\n * @param options HTTP options\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with the response body as a `Blob`.\n */\n post(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<Blob>>;\n\n /**\n * Constructs a `POST` request that interprets the body as a text stream and returns\n * the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param body The content to replace with.\n * @param options HTTP options\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with a response body of type string.\n */\n post(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<string>>;\n\n /**\n * Constructs a `POST` request that interprets the body as JSON\n * and returns the full `HttpResponse`.\n *\n * @param url The endpoint URL.\n * @param body The content to replace with.\n * @param options HTTP options\n *\n * @return An `Observable` of the `HttpResponse` for the request, with a response body of type\n * `Object`.\n */\n post(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<Object>>;\n\n /**\n * Constructs a `POST` request that interprets the body as JSON and returns the\n * full `HttpResponse`.\n *\n *\n * @param url The endpoint URL.\n * @param body The content to replace with.\n * @param options HTTP options\n *\n * @return An `Observable` of the `HttpResponse` for the request, with a response body in the\n * requested type.\n */\n post<T>(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<HttpResponse<T>>;\n\n /**\n * Constructs a `POST` request that interprets the body as JSON\n * and returns the response body as an object parsed from JSON.\n *\n * @param url The endpoint URL.\n * @param body The content to replace with.\n * @param options HTTP options\n *\n * @return An `Observable` of the response, with the response body as an object parsed from JSON.\n */\n post(\n url: string,\n body: any | null,\n options?: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<Object>;\n\n /**\n * Constructs a `POST` request that interprets the body as JSON\n * and returns an observable of the response.\n *\n * @param url The endpoint URL.\n * @param body The content to replace with.\n * @param options HTTP options\n *\n * @return An `Observable` of the `HttpResponse` for the request, with a response body in the\n * requested type.\n */\n post<T>(\n url: string,\n body: any | null,\n options?: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n },\n ): Observable<T>;\n\n /**\n * Constructs an observable that, when subscribed, causes the configured\n * `POST` request to execute on the server. The server responds with the location of\n * the replaced resource. See the individual overloads for\n * details on the return type.\n */\n post(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body' | 'events' | 'response';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n transferCache?: {includeHeaders?: string[]} | boolean;\n timeout?: number;\n } = {},\n ): Observable<any> {\n return this.request<any>('POST', url, addBody(options, body));\n }\n\n /**\n * Constructs a `PUT` request that interprets the body as an `ArrayBuffer` and returns the\n * response as an `ArrayBuffer`.\n *\n * @param url The endpoint URL.\n * @param body The resources to add/update.\n * @param options HTTP options\n *\n * @return An `Observable` of the response, with the response body as an `ArrayBuffer`.\n */\n put(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<ArrayBuffer>;\n\n /**\n * Constructs a `PUT` request that interprets the body as a `Blob` and returns\n * the response as a `Blob`.\n *\n * @param url The endpoint URL.\n * @param body The resources to add/update.\n * @param options HTTP options\n *\n * @return An `Observable` of the response, with the response body as a `Blob`.\n */\n put(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<Blob>;\n\n /**\n * Constructs a `PUT` request that interprets the body as a text string and\n * returns the response as a string value.\n *\n * @param url The endpoint URL.\n * @param body The resources to add/update.\n * @param options HTTP options\n *\n * @return An `Observable` of the response, with a response body of type string.\n */\n put(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<string>;\n\n /**\n * Constructs a `PUT` request that interprets the body as an `ArrayBuffer` and\n * returns the full event stream.\n *\n * @param url The endpoint URL.\n * @param body The resources to add/update.\n * @param options HTTP options\n *\n * @return An `Observable` of all `HttpEvent`s for the request,\n * with the response body as an `ArrayBuffer`.\n */\n put(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpEvent<ArrayBuffer>>;\n\n /**\n * Constructs a `PUT` request that interprets the body as a `Blob` and returns the full event\n * stream.\n *\n * @param url The endpoint URL.\n * @param body The resources to add/update.\n * @param options HTTP options\n *\n * @return An `Observable` of all `HttpEvent`s for the request,\n * with the response body as a `Blob`.\n */\n put(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpEvent<Blob>>;\n\n /**\n * Constructs a `PUT` request that interprets the body as a text string and returns the full event\n * stream.\n *\n * @param url The endpoint URL.\n * @param body The resources to add/update.\n * @param options HTTP options\n *\n * @return An `Observable` of all `HttpEvent`s for the request, with a response body\n * of type string.\n */\n put(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpEvent<string>>;\n\n /**\n * Constructs a `PUT` request that interprets the body as JSON and returns the full\n * event stream.\n *\n * @param url The endpoint URL.\n * @param body The resources to add/update.\n * @param options HTTP options\n *\n * @return An `Observable` of all `HttpEvent`s for the request, with a response body of\n * type `Object`.\n */\n put(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpEvent<Object>>;\n\n /**\n * Constructs a `PUT` request that interprets the body as JSON and returns the\n * full event stream.\n *\n * @param url The endpoint URL.\n * @param body The resources to add/update.\n * @param options HTTP options\n *\n * @return An `Observable` of all `HttpEvent`s for the request,\n * with a response body in the requested type.\n */\n put<T>(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'events';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpEvent<T>>;\n\n /**\n * Constructs a `PUT` request that interprets the body as an\n * `ArrayBuffer` and returns an observable of the full HTTP response.\n *\n * @param url The endpoint URL.\n * @param body The resources to add/update.\n * @param options HTTP options\n *\n * @return An `Observable` of the `HttpResponse` for the request, with the response body as an\n * `ArrayBuffer`.\n */\n put(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'arraybuffer';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpResponse<ArrayBuffer>>;\n\n /**\n * Constructs a `PUT` request that interprets the body as a `Blob` and returns the\n * full HTTP response.\n *\n * @param url The endpoint URL.\n * @param body The resources to add/update.\n * @param options HTTP options\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with the response body as a `Blob`.\n */\n put(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'blob';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpResponse<Blob>>;\n\n /**\n * Constructs a `PUT` request that interprets the body as a text stream and returns the\n * full HTTP response.\n *\n * @param url The endpoint URL.\n * @param body The resources to add/update.\n * @param options HTTP options\n *\n * @return An `Observable` of the `HttpResponse` for the request, with a response body of type\n * string.\n */\n put(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType: 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpResponse<string>>;\n\n /**\n * Constructs a `PUT` request that interprets the body as JSON and returns the full\n * HTTP response.\n *\n * @param url The endpoint URL.\n * @param body The resources to add/update.\n * @param options HTTP options\n *\n * @return An `Observable` of the `HttpResponse` for the request, with a response body\n * of type 'Object`.\n */\n put(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpResponse<Object>>;\n\n /**\n * Constructs a `PUT` request that interprets the body as an instance of the requested type and\n * returns the full HTTP response.\n *\n * @param url The endpoint URL.\n * @param body The resources to add/update.\n * @param options HTTP options\n *\n * @return An `Observable` of the `HttpResponse` for the request,\n * with a response body in the requested type.\n */\n put<T>(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n observe: 'response';\n context?: HttpContext;\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<HttpResponse<T>>;\n\n /**\n * Constructs a `PUT` request that interprets the body as JSON\n * and returns an observable of JavaScript object.\n *\n * @param url The endpoint URL.\n * @param body The resources to add/update.\n * @param options HTTP options\n *\n * @return An `Observable` of the response as a JavaScript object.\n */\n put(\n url: string,\n body: any | null,\n options?: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<Object>;\n\n /**\n * Constructs a `PUT` request that interprets the body as an instance of the requested type\n * and returns an observable of the requested type.\n *\n * @param url The endpoint URL.\n * @param body The resources to add/update.\n * @param options HTTP options\n *\n * @return An `Observable` of the requested type.\n */\n put<T>(\n url: string,\n body: any | null,\n options?: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'json';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n },\n ): Observable<T>;\n\n /**\n * Constructs an observable that, when subscribed, causes the configured\n * `PUT` request to execute on the server. The `PUT` method replaces an existing resource\n * with a new set of values.\n * See the individual overloads for details on the return type.\n */\n put(\n url: string,\n body: any | null,\n options: {\n headers?: HttpHeaders | Record<string, string | string[]>;\n context?: HttpContext;\n observe?: 'body' | 'events' | 'response';\n params?:\n | HttpParams\n | Record<string, string | number | boolean | ReadonlyArray<string | number | boolean>>;\n reportProgress?: boolean;\n responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';\n withCredentials?: boolean;\n credentials?: RequestCredentials;\n keepalive?: boolean;\n priority?: RequestPriority;\n cache?: RequestCache;\n mode?: RequestMode;\n redirect?: RequestRedirect;\n referrer?: string;\n integrity?: string;\n referrerPolicy?: ReferrerPolicy;\n timeout?: number;\n } = {},\n ): Observable<any> {\n return this.request<any>('PUT', url, addBody(options, body));\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.dev/license\n */\n\nimport {DOCUMENT} from '../../index';\nimport {\n EnvironmentInjector,\n Inject,\n inject,\n Injectable,\n runInInjectionContext,\n ɵRuntimeError as RuntimeError,\n} from '@angular/core';\nimport {Observable, Observer} from 'rxjs';\n\nimport {HttpBackend, HttpHandler} from './backend';\nimport {HttpHandlerFn} from './interceptor';\nimport {HttpRequest} from './request';\nimport {\n HTTP_STATUS_CODE_OK,\n HttpErrorResponse,\n HttpEvent,\n HttpEventType,\n HttpResponse,\n} from './response';\nimport {RuntimeErrorCode} from './errors';\n\n// Every request made through JSONP needs a callback name that's unique across the\n// whole page. Each request is assigned an id and the callback name is constructed\n// from that. The next id to be assigned is tracked in a global variable here that\n// is shared among all applications on the page.\nlet nextRequestId: number = 0;\n\n/**\n * When a pending <script> is unsubscribed we'll move it to this document, so it won't be\n * executed.\n */\nlet foreignDocument: Document | undefined;\n\n// Error text given when a JSONP script is injected, but doesn't invoke the callback\n// passed in its URL.\nexport const JSONP_ERR_NO_CALLBACK = 'JSONP injected script did not invoke callback.';\n\n// Error text given when a request is passed to the JsonpClientBackend that doesn't\n// have a request method JSONP.\nexport const JSONP_ERR_WRONG_METHOD = 'JSONP requests must use JSONP request method.';\nexport const JSONP_ERR_WRONG_RESPONSE_TYPE = 'JSONP requests must use Json response type.';\n\n// Error text given when a request is passed to the JsonpClientBackend that has\n// headers set\nexport const JSONP_ERR_HEADERS_NOT_SUPPORTED = 'JSONP requests do not support headers.';\n\n/**\n * DI token/abstract type representing a map of JSONP callbacks.\n *\n * In the browser, this should always be the `window` object.\n *\n *\n */\nexport abstract class JsonpCallbackContext {\n [key: string]: (data: any) => void;\n}\n\n/**\n * Factory function that determines where to store JSONP callbacks.\n *\n * Ordinarily JSONP callbacks are stored on the `window` object, but this may not exist\n * in test environments. In that case, callbacks are stored on an anonymous object instead.\n *\n *\n */\nexport function jsonpCallbackContext(): Object {\n if (typeof window === 'object') {\n return window;\n }\n return {};\n}\n\n/**\n * Processes an `HttpRequest` with the JSONP method,\n * by performing JSONP style requests.\n * @see {@link HttpHandler}\n * @see {@link HttpXhrBackend}\n *\n * @publicApi\n */\n@Injectable()\nexport class JsonpClientBackend implements HttpBackend {\n /**\n * A resolved promise that can be used to schedule microtasks in the event handlers.\n */\n private readonly resolvedPromise = Promise.resolve();\n\n constructor(\n private callbackMap: JsonpCallbackContext,\n @Inject(DOCUMENT) private document: any,\n ) {}\n\n /**\n * Get the name of the next callback method, by incrementing the global `nextRequestId`.\n */\n private nextCallback(): string {\n return `ng_jsonp_callback_${nextRequestId++}`;\n }\n\n /**\n * Processes a JSONP request and returns an event stream of the results.\n * @param req The request object.\n * @returns An observable of the response events.\n *\n */\n handle(req: HttpRequest<never>): Observable<HttpEvent<any>> {\n // Firstly, check both the method and response type. If either doesn't match\n // then the request was improperly routed here and cannot be handled.\n if (req.method !== 'JSONP') {\n throw new RuntimeError(\n RuntimeErrorCode.JSONP_WRONG_METHOD,\n ngDevMode && JSONP_ERR_WRONG_METHOD,\n );\n } else if (req.responseType !== 'json') {\n throw new RuntimeError(\n RuntimeErrorCode.JSONP_WRONG_RESPONSE_TYPE,\n ngDevMode && JSONP_ERR_WRONG_RESPONSE_TYPE,\n );\n }\n\n // Check the request headers. JSONP doesn't support headers and\n // cannot set any that were supplied.\n if (req.headers.keys().length > 0) {\n throw new RuntimeError(\n RuntimeErrorCode.JSONP_HEADERS_NOT_SUPPORTED,\n ngDevMode && JSONP_ERR_HEADERS_NOT_SUPPORTED,\n );\n }\n\n // Everything else happens inside the Observable boundary.\n return new Observable<HttpEvent<any>>((observer: Observer<HttpEvent<any>>) => {\n // The first step to make a request is to generate the callback name, and replace the\n // callback placeholder in the URL with the name. Care has to be taken here to ensure\n // a trailing &, if matched, gets inserted back into the URL in the correct place.\n const callback = this.nextCallback();\n const url = req.urlWithParams.replace(/=JSONP_CALLBACK(&|$)/, `=${callback}$1`);\n\n // Construct the <script> tag and point it at the URL.\n const node = this.document.createElement('script');\n node.src = url;\n\n // A JSONP request requires waiting for multiple callbacks. These variables\n // are closed over and track state across those callbacks.\n\n // The response object, if one has been received, or null otherwise.\n let body: any | null = null;\n\n // Whether the response callback has been called.\n let finished: boolean = false;\n\n // Set the response callback in this.callbackMap (which will be the window\n // object in the browser. The script being loaded via the <script> tag will\n // eventually call this callback.\n this.callbackMap[callback] = (data?: any) => {\n // Data has been received from the JSONP script. Firstly, delete this callback.\n delete this.callbackMap[callback];\n\n // Set state to indicate data was received.\n body = data;\n finished = true;\n };\n\n // cleanup() is a utility closure that removes the <script> from the page and\n // the response callback from the window. This logic is used in both the\n // success, error, and cancellation paths, so it's extracted out for convenience.\n const cleanup = () => {\n node.removeEventListener('load', onLoad);\n node.removeEventListener('error', onError);\n\n // Remove the <script> tag if it's still on the page.\n node.remove();\n\n // Remove the response callback from the callbackMap (window object in the\n // browser).\n delete this.callbackMap[callback];\n };\n\n // onLoad() is the success callback which runs after the response callback\n // if the JSONP script loads successfully. The event itself is unimportant.\n // If something went wrong, onLoad() may run without the response callback\n // having been invoked.\n const onLoad = () => {\n // We wrap it in an extra Promise, to ensure the microtask\n // is scheduled after the loaded endpoint has executed any potential microtask itself,\n // which is not guaranteed in Internet Explorer and EdgeHTML. See issue #39496\n this.resolvedPromise.then(() => {\n // Cleanup the page.\n cleanup();\n\n // Check whether the response callback has run.\n if (!finished) {\n // It hasn't, something went wrong with the request. Return an error via\n // the Observable error path. All JSONP errors have status 0.\n observer.error(\n new HttpErrorResponse({\n url,\n status: 0,\n statusText: 'JSONP Error',\n error: new Error(JSONP_ERR_NO_CALLBACK),\n }),\n );\n return;\n }\n\n // Success. body either contains the response body or null if none was\n // returned.\n observer.next(\n new HttpResponse({\n body,\n status: HTTP_STATUS_CODE_OK,\n statusText: 'OK',\n url,\n }),\n );\n\n // Complete the stream, the response is over.\n observer.complete();\n });\n };\n\n // onError() is the error callback, which runs if the script returned generates\n // a Javascript error. It emits the error via the Observable error channel as\n // a HttpErrorResponse.\n const onError = (error: Error) => {\n cleanup();\n\n // Wrap the error in a HttpErrorResponse.\n observer.error(\n new HttpErrorResponse({\n error,\n status: 0,\n statusText: 'JSONP Error',\n url,\n }),\n );\n };\n\n // Subscribe to both the success (load) and error events on the <script> tag,\n // and add it to the page.\n node.addEventListener('load', onLoad);\n node.addEventListener('error', onError);\n this.document.body.appendChild(node);\n\n // The request has now been successfully sent.\n observer.next({type: HttpEventType.Sent});\n\n // Cancellation handler.\n return () => {\n if (!finished) {\n this.removeListeners(node);\n }\n\n // And finally, clean up the page.\n cleanup();\n };\n });\n }\n\n private removeListeners(script: HTMLScriptElement): void {\n // Issue #34818\n // Changing <script>'s ownerDocument will prevent it from execution.\n // https://html.spec.whatwg.org/multipage/scripting.html#execute-the-script-block\n foreignDocument ??= (this.document.implementation as DOMImplementation).createHTMLDocument();\n\n foreignDocument.adoptNode(script);\n }\n}\n\n/**\n * Identifies requests with the method JSONP and shifts them to the `JsonpClientBackend`.\n */\nexport function jsonpInterceptorFn(\n req: HttpRequest<unknown>,\n next: HttpHandlerFn,\n): Observable<HttpEvent<unknown>> {\n if (req.method === 'JSONP') {\n return inject(JsonpClientBackend).handle(req as HttpRequest<never>);\n }\n\n // Fall through for normal HTTP requests.\n return next(req);\n}\n\n/**\n * Identifies requests with the method JSONP and\n * shifts them to the `JsonpClientBackend`.\n *\n * @see {@link HttpInterceptor}\n *\n * @publicApi\n */\n@Injectable()\nexport class JsonpInterceptor {\n constructor(private injector: EnvironmentInjector) {}\n\n /**\n * Identifies and handles a given JSONP request.\n * @param initialRequest The outgoing request object to handle.\n * @param next The next interceptor in the chain, or the backend\n * if no interceptors remain in the chain.\n * @returns An observable of the event stream.\n */\n intercept(initialRequest: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {\n return runInInjectionContext(this.injector, () =>\n jsonpInterceptorFn(initialRequest, (downstreamRequest) => next.handle(downstreamRequest)),\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.dev/license\n */\n\nimport {DOCUMENT, ɵparseCookieValue as parseCookieValue, PlatformLocation} from '../../index';\nimport {\n EnvironmentInjector,\n inject,\n Injectable,\n InjectionToken,\n runInInjectionContext,\n} from '@angular/core';\nimport {Observable} from 'rxjs';\n\nimport {HttpHandler} from './backend';\nimport {HttpHandlerFn, HttpInterceptor} from './interceptor';\nimport {HttpRequest} from './request';\nimport {HttpEvent} from './response';\n\nexport const XSRF_ENABLED = new InjectionToken<boolean>(\n typeof ngDevMode !== 'undefined' && ngDevMode ? 'XSRF_ENABLED' : '',\n {\n factory: () => true,\n },\n);\n\nexport const XSRF_DEFAULT_COOKIE_NAME = 'XSRF-TOKEN';\nexport const XSRF_COOKIE_NAME = new InjectionToken<string>(\n typeof ngDevMode !== 'undefined' && ngDevMode ? 'XSRF_COOKIE_NAME' : '',\n {\n // Providing a factory implies that the token is provided in root by default\n factory: () => XSRF_DEFAULT_COOKIE_NAME,\n },\n);\n\nexport const XSRF_DEFAULT_HEADER_NAME = 'X-XSRF-TOKEN';\nexport const XSRF_HEADER_NAME = new InjectionToken<string>(\n typeof ngDevMode !== 'undefined' && ngDevMode ? 'XSRF_HEADER_NAME' : '',\n {\n factory: () => XSRF_DEFAULT_HEADER_NAME,\n },\n);\n\n/**\n * `HttpXsrfTokenExtractor` which retrieves the token from a cookie.\n */\n@Injectable({providedIn: 'root'})\nexport class HttpXsrfCookieExtractor implements HttpXsrfTokenExtractor {\n private readonly cookieName = inject(XSRF_COOKIE_NAME);\n private readonly doc = inject(DOCUMENT);\n\n private lastCookieString: string = '';\n private lastToken: string | null = null;\n\n /**\n * @internal for testing\n */\n parseCount: number = 0;\n\n getToken(): string | null {\n if (typeof ngServerMode !== 'undefined' && ngServerMode) {\n return null;\n }\n const cookieString = this.doc.cookie || '';\n if (cookieString !== this.lastCookieString) {\n this.parseCount++;\n this.lastToken = parseCookieValue(cookieString, this.cookieName);\n this.lastCookieString = cookieString;\n }\n return this.lastToken;\n }\n}\n\n/**\n * Retrieves the current XSRF token to use with the next outgoing request.\n *\n * @publicApi\n */\n@Injectable({providedIn: 'root', useExisting: HttpXsrfCookieExtractor})\nexport abstract class HttpXsrfTokenExtractor {\n /**\n * Get the XSRF token to use with an outgoing request.\n *\n * Will be called for every request, so the token may change between requests.\n */\n abstract getToken(): string | null;\n}\n\nexport function xsrfInterceptorFn(\n req: HttpRequest<unknown>,\n next: HttpHandlerFn,\n): Observable<HttpEvent<unknown>> {\n // Skip both non-mutating requests\n // Non-mutating requests generally don't require a token.\n if (!inject(XSRF_ENABLED) || req.method === 'GET' || req.method === 'HEAD') {\n return next(req);\n }\n\n try {\n const locationHref = inject(PlatformLocation).href;\n const {origin: locationOrigin} = new URL(locationHref);\n // We can use `new URL` to normalize a relative URL like '//something.com' to\n // 'https://something.com' in order to make consistent same-origin comparisons.\n const {origin: requestOrigin} = new URL(req.url, locationOrigin);\n\n if (locationOrigin !== requestOrigin) {\n return next(req);\n }\n } catch {\n // Handle invalid URLs gracefully.\n return next(req);\n }\n\n const token = inject(HttpXsrfTokenExtractor).getToken();\n const headerName = inject(XSRF_HEADER_NAME);\n\n // Be careful not to overwrite an existing header of the same name.\n if (token != null && !req.headers.has(headerName)) {\n req = req.clone({headers: req.headers.set(headerName, token)});\n }\n return next(req);\n}\n\n/**\n * `HttpInterceptor` which adds an XSRF token to eligible outgoing requests.\n */\n@Injectable()\nexport class HttpXsrfInterceptor implements HttpInterceptor {\n private readonly injector = inject(EnvironmentInjector);\n\n intercept(initialRequest: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {\n return runInInjectionContext(this.injector, () =>\n xsrfInterceptorFn(initialRequest, (downstreamRequest) => next.handle(downstreamRequest)),\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.dev/license\n */\n\nimport {\n EnvironmentProviders,\n inject,\n InjectionToken,\n makeEnvironmentProviders,\n Provider,\n} from '@angular/core';\n\nimport {HttpBackend, HttpHandler, HttpInterceptorHandler} from './backend';\nimport {HttpClient} from './client';\nimport {FETCH_BACKEND, FetchBackend} from './fetch';\nimport {HTTP_INTERCEPTOR_FNS, HttpInterceptorFn, legacyInterceptorFnFactory} from './interceptor';\nimport {\n jsonpCallbackContext,\n JsonpCallbackContext,\n JsonpClientBackend,\n jsonpInterceptorFn,\n} from './jsonp';\nimport {HttpXhrBackend} from './xhr';\nimport {XSRF_COOKIE_NAME, XSRF_ENABLED, XSRF_HEADER_NAME, xsrfInterceptorFn} from './xsrf';\n\n/**\n * Identifies a particular kind of `HttpFeature`.\n *\n * @publicApi\n */\nexport enum HttpFeatureKind {\n Interceptors,\n LegacyInterceptors,\n CustomXsrfConfiguration,\n NoXsrfProtection,\n JsonpSupport,\n RequestsMadeViaParent,\n Fetch,\n}\n\n/**\n * A feature for use when configuring `provideHttpClient`.\n *\n * @publicApi\n */\nexport interface HttpFeature<KindT extends HttpFeatureKind> {\n ɵkind: KindT;\n ɵproviders: Provider[];\n}\n\nfunction makeHttpFeature<KindT extends HttpFeatureKind>(\n kind: KindT,\n providers: Provider[],\n): HttpFeature<KindT> {\n return {\n ɵkind: kind,\n ɵproviders: providers,\n };\n}\n\n/**\n * Configures Angular's `HttpClient` service to be available for injection.\n *\n * By default, `HttpClient` will be configured for injection with its default options for XSRF\n * protection of outgoing requests. Additional configuration options can be provided by passing\n * feature functions to `provideHttpClient`. For example, HTTP interceptors can be added using the\n * `withInterceptors(...)` feature.\n *\n * <div class=\"docs-alert docs-alert-helpful\">\n *\n * It's strongly recommended to enable\n * [`fetch`](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API) for applications that use\n * Server-Side Rendering for better performance and compatibility. To enable `fetch`, add\n * `withFetch()` feature to the `provideHttpClient()` call at the root of the application:\n *\n * ```ts\n * provideHttpClient(withFetch());\n * ```\n *\n * </div>\n * @see [HTTP Client](guide/http/setup)\n * @see {@link withInterceptors}\n * @see {@link withInterceptorsFromDi}\n * @see {@link withXsrfConfiguration}\n * @see {@link withNoXsrfProtection}\n * @see {@link withJsonpSupport}\n * @see {@link withRequestsMadeViaParent}\n * @see {@link withFetch}\n */\nexport function provideHttpClient(\n ...features: HttpFeature<HttpFeatureKind>[]\n): EnvironmentProviders {\n if (ngDevMode) {\n const featureKinds = new Set(features.map((f) => f.ɵkind));\n if (\n featureKinds.has(HttpFeatureKind.NoXsrfProtection) &&\n featureKinds.has(HttpFeatureKind.CustomXsrfConfiguration)\n ) {\n throw new Error(\n ngDevMode\n ? `Configuration error: found both withXsrfConfiguration() and withNoXsrfProtection() in the same call to provideHttpClient(), which is a contradiction.`\n : '',\n );\n }\n }\n\n const providers: Provider[] = [\n HttpClient,\n HttpInterceptorHandler,\n {provide: HttpHandler, useExisting: HttpInterceptorHandler},\n {\n provide: HttpBackend,\n useFactory: () => {\n return inject(FETCH_BACKEND, {optional: true}) ?? inject(HttpXhrBackend);\n },\n },\n {\n provide: HTTP_INTERCEPTOR_FNS,\n useValue: xsrfInterceptorFn,\n multi: true,\n },\n ];\n\n for (const feature of features) {\n providers.push(...feature.ɵproviders);\n }\n\n return makeEnvironmentProviders(providers);\n}\n\n/**\n * Adds one or more functional-style HTTP interceptors to the configuration of the `HttpClient`\n * instance.\n *\n * @see {@link HttpInterceptorFn}\n * @see {@link provideHttpClient}\n * @publicApi\n */\nexport function withInterceptors(\n interceptorFns: HttpInterceptorFn[],\n): HttpFeature<HttpFeatureKind.Interceptors> {\n return makeHttpFeature(\n HttpFeatureKind.Interceptors,\n interceptorFns.map((interceptorFn) => {\n return {\n provide: HTTP_INTERCEPTOR_FNS,\n useValue: interceptorFn,\n multi: true,\n };\n }),\n );\n}\n\nconst LEGACY_INTERCEPTOR_FN = new InjectionToken<HttpInterceptorFn>(\n typeof ngDevMode !== 'undefined' && ngDevMode ? 'LEGACY_INTERCEPTOR_FN' : '',\n);\n\n/**\n * Includes class-based interceptors configured using a multi-provider in the current injector into\n * the configured `HttpClient` instance.\n *\n * Prefer `withInterceptors` and functional interceptors instead, as support for DI-provided\n * interceptors may be phased out in a later release.\n *\n * @see {@link HttpInterceptor}\n * @see {@link HTTP_INTERCEPTORS}\n * @see {@link provideHttpClient}\n */\nexport function withInterceptorsFromDi(): HttpFeature<HttpFeatureKind.LegacyInterceptors> {\n // Note: the legacy interceptor function is provided here via an intermediate token\n // (`LEGACY_INTERCEPTOR_FN`), using a pattern which guarantees that if these providers are\n // included multiple times, all of the multi-provider entries will have the same instance of the\n // interceptor function. That way, the `HttpINterceptorHandler` will dedup them and legacy\n // interceptors will not run multiple times.\n return makeHttpFeature(HttpFeatureKind.LegacyInterceptors, [\n {\n provide: LEGACY_INTERCEPTOR_FN,\n useFactory: legacyInterceptorFnFactory,\n },\n {\n provide: HTTP_INTERCEPTOR_FNS,\n useExisting: LEGACY_INTERCEPTOR_FN,\n multi: true,\n },\n ]);\n}\n\n/**\n * Customizes the XSRF protection for the configuration of the current `HttpClient` instance.\n *\n * This feature is incompatible with the `withNoXsrfProtection` feature.\n *\n * @see {@link provideHttpClient}\n */\nexport function withXsrfConfiguration({\n cookieName,\n headerName,\n}: {\n cookieName?: string;\n headerName?: string;\n}): HttpFeature<HttpFeatureKind.CustomXsrfConfiguration> {\n const providers: Provider[] = [];\n if (cookieName !== undefined) {\n providers.push({provide: XSRF_COOKIE_NAME, useValue: cookieName});\n }\n if (headerName !== undefined) {\n providers.push({provide: XSRF_HEADER_NAME, useValue: headerName});\n }\n\n return makeHttpFeature(HttpFeatureKind.CustomXsrfConfiguration, providers);\n}\n\n/**\n * Disables XSRF protection in the configuration of the current `HttpClient` instance.\n *\n * This feature is incompatible with the `withXsrfConfiguration` feature.\n *\n * @see {@link provideHttpClient}\n */\nexport function withNoXsrfProtection(): HttpFeature<HttpFeatureKind.NoXsrfProtection> {\n return makeHttpFeature(HttpFeatureKind.NoXsrfProtection, [\n {\n provide: XSRF_ENABLED,\n useValue: false,\n },\n ]);\n}\n\n/**\n * Add JSONP support to the configuration of the current `HttpClient` instance.\n *\n * @see {@link provideHttpClient}\n */\nexport function withJsonpSupport(): HttpFeature<HttpFeatureKind.JsonpSupport> {\n return makeHttpFeature(HttpFeatureKind.JsonpSupport, [\n JsonpClientBackend,\n {provide: JsonpCallbackContext, useFactory: jsonpCallbackContext},\n {provide: HTTP_INTERCEPTOR_FNS, useValue: jsonpInterceptorFn, multi: true},\n ]);\n}\n\n/**\n * Configures the current `HttpClient` instance to make requests via the parent injector's\n * `HttpClient` instead of directly.\n *\n * By default, `provideHttpClient` configures `HttpClient` in its injector to be an independent\n * instance. For example, even if `HttpClient` is configured in the parent injector with\n * one or more interceptors, they will not intercept requests made via this instance.\n *\n * With this option enabled, once the request has passed through the current injector's\n * interceptors, it will be delegated to the parent injector's `HttpClient` chain instead of\n * dispatched directly, and interceptors in the parent configuration will be applied to the request.\n *\n * If there are several `HttpClient` instances in the injector hierarchy, it's possible for\n * `withRequestsMadeViaParent` to be used at multiple levels, which will cause the request to\n * \"bubble up\" until either reaching the root level or an `HttpClient` which was not configured with\n * this option.\n *\n * @see [HTTP client setup](guide/http/setup#withrequestsmadeviaparent)\n * @see {@link provideHttpClient}\n * @publicApi 19.0\n */\nexport function withRequestsMadeViaParent(): HttpFeature<HttpFeatureKind.RequestsMadeViaParent> {\n return makeHttpFeature(HttpFeatureKind.RequestsMadeViaParent, [\n {\n provide: HttpBackend,\n useFactory: () => {\n const handlerFromParent = inject(HttpHandler, {skipSelf: true, optional: true});\n if (ngDevMode && handlerFromParent === null) {\n throw new Error(\n 'withRequestsMadeViaParent() can only be used when the parent injector also configures HttpClient',\n );\n }\n return handlerFromParent;\n },\n },\n ]);\n}\n\n/**\n * Configures the current `HttpClient` instance to make requests using the fetch API.\n *\n * Note: The Fetch API doesn't support progress report on uploads.\n *\n * @see [Advanced fetch Options](guide/http/making-requests#advanced-fetch-options)\n *\n * @publicApi\n */\nexport function withFetch(): HttpFeature<HttpFeatureKind.Fetch> {\n return makeHttpFeature(HttpFeatureKind.Fetch, [\n FetchBackend,\n {provide: FETCH_BACKEND, useExisting: FetchBackend},\n {provide: HttpBackend, useExisting: FetchBackend},\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.dev/license\n */\n\nimport {ModuleWithProviders, NgModule} from '@angular/core';\n\nimport {HTTP_INTERCEPTORS} from './interceptor';\nimport {\n provideHttpClient,\n withInterceptorsFromDi,\n withJsonpSupport,\n withNoXsrfProtection,\n withXsrfConfiguration,\n} from './provider';\nimport {\n HttpXsrfCookieExtractor,\n HttpXsrfInterceptor,\n HttpXsrfTokenExtractor,\n XSRF_DEFAULT_COOKIE_NAME,\n XSRF_DEFAULT_HEADER_NAME,\n XSRF_ENABLED,\n} from './xsrf';\n\n/**\n * Configures XSRF protection support for outgoing requests.\n *\n * For a server that supports a cookie-based XSRF protection system,\n * use directly to configure XSRF protection with the correct\n * cookie and header names.\n *\n * If no names are supplied, the default cookie name is `XSRF-TOKEN`\n * and the default header name is `X-XSRF-TOKEN`.\n *\n * @publicApi\n * @deprecated Use withXsrfConfiguration({cookieName: 'XSRF-TOKEN', headerName: 'X-XSRF-TOKEN'}) as\n * providers instead or `withNoXsrfProtection` if you want to disabled XSRF protection.\n */\n@NgModule({\n providers: [\n HttpXsrfInterceptor,\n {provide: HTTP_INTERCEPTORS, useExisting: HttpXsrfInterceptor, multi: true},\n {provide: HttpXsrfTokenExtractor, useClass: HttpXsrfCookieExtractor},\n withXsrfConfiguration({\n cookieName: XSRF_DEFAULT_COOKIE_NAME,\n headerName: XSRF_DEFAULT_HEADER_NAME,\n }).ɵproviders,\n {provide: XSRF_ENABLED, useValue: true},\n ],\n})\nexport class HttpClientXsrfModule {\n /**\n * Disable the default XSRF protection.\n */\n static disable(): ModuleWithProviders<HttpClientXsrfModule> {\n return {\n ngModule: HttpClientXsrfModule,\n providers: [withNoXsrfProtection().ɵproviders],\n };\n }\n\n /**\n * Configure XSRF protection.\n * @param options An object that can specify either or both\n * cookie name or header name.\n * - Cookie name default is `XSRF-TOKEN`.\n * - Header name default is `X-XSRF-TOKEN`.\n *\n */\n static withOptions(\n options: {\n cookieName?: string;\n headerName?: string;\n } = {},\n ): ModuleWithProviders<HttpClientXsrfModule> {\n return {\n ngModule: HttpClientXsrfModule,\n providers: withXsrfConfiguration(options).ɵproviders,\n };\n }\n}\n\n/**\n * Configures the dependency injector for `HttpClient`\n * with supporting services for XSRF. Automatically imported by `HttpClientModule`.\n *\n * You can add interceptors to the chain behind `HttpClient` by binding them to the\n * multiprovider for built-in DI token `HTTP_INTERCEPTORS`.\n *\n * @publicApi\n * @deprecated use `provideHttpClient(withInterceptorsFromDi())` as providers instead\n */\n@NgModule({\n /**\n * Configures the dependency injector where it is imported\n * with supporting services for HTTP communications.\n */\n providers: [provideHttpClient(withInterceptorsFromDi())],\n})\nexport class HttpClientModule {}\n\n/**\n * Configures the dependency injector for `HttpClient`\n * with supporting services for JSONP.\n * Without this module, Jsonp requests reach the backend\n * with method JSONP, where they are rejected.\n *\n * @publicApi\n * @deprecated `withJsonpSupport()` as providers instead\n */\n@NgModule({\n providers: [withJsonpSupport().ɵproviders],\n})\nexport class HttpClientJsonpModule 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