DigitalData.UserManager/DigitalData.UserManager.NgWebUI/ClientApp/.angular/cache/17.3.0/babel-webpack/aec2226e7e28a4ab8925c0f416827c087d3f314e6488ee18669e21541fbc97c7.json

{"ast":null,"code":"import _asyncToGenerator from \"E:/TekH/Visual Studio/WebUserManager/DigitalData.UserManager.NgWebUI/ClientApp/node_modules/@babel/runtime/helpers/esm/asyncToGenerator.js\";\n/**\n * @license Angular v17.3.0\n * (c) 2010-2022 Google LLC. https://angular.io/\n * License: MIT\n */\n\nimport * as i0 from '@angular/core';\nimport { Injectable, inject, NgZone, runInInjectionContext, InjectionToken, ɵPendingTasks, PLATFORM_ID, ɵConsole, ɵformatRuntimeError, Inject, ɵRuntimeError, makeEnvironmentProviders, NgModule, TransferState, makeStateKey, ɵperformanceMarkFeature, APP_BOOTSTRAP_LISTENER, ApplicationRef, ɵwhenStable, ɵtruncateMiddle } from '@angular/core';\nimport { of, Observable, from } from 'rxjs';\nimport { concatMap, filter, map, finalize, switchMap, tap } from 'rxjs/operators';\nimport * as i1 from '@angular/common';\nimport { isPlatformServer, DOCUMENT, ɵparseCookieValue } from '@angular/common';\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 */\nclass HttpHandler {}\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 */\nclass HttpBackend {}\n\n/**\n * Represents the header configuration options for an HTTP request.\n * Instances are immutable. Modifying methods return a cloned\n * instance with the change. The original object is never changed.\n *\n * @publicApi\n */\nclass HttpHeaders {\n  /**  Constructs a new HTTP header object with the given values.*/\n  constructor(headers) {\n    /**\n     * Internal map of lowercased header names to the normalized\n     * form of the name (the form seen first).\n     */\n    this.normalizedNames = new Map();\n    /**\n     * Queued updates to be materialized the next initialization.\n     */\n    this.lazyUpdate = null;\n    if (!headers) {\n      this.headers = new Map();\n    } else if (typeof headers === 'string') {\n      this.lazyInit = () => {\n        this.headers = new Map();\n        headers.split('\\n').forEach(line => {\n          const index = line.indexOf(':');\n          if (index > 0) {\n            const name = line.slice(0, index);\n            const key = name.toLowerCase();\n            const value = line.slice(index + 1).trim();\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      };\n    } else if (typeof Headers !== 'undefined' && headers instanceof Headers) {\n      this.headers = new Map();\n      headers.forEach((values, name) => {\n        this.setHeaderEntries(name, values);\n      });\n    } else {\n      this.lazyInit = () => {\n        if (typeof ngDevMode === 'undefined' || ngDevMode) {\n          assertValidHeaders(headers);\n        }\n        this.headers = new Map();\n        Object.entries(headers).forEach(([name, values]) => {\n          this.setHeaderEntries(name, values);\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) {\n    this.init();\n    return this.headers.has(name.toLowerCase());\n  }\n  /**\n   * Retrieves the first value of a given header.\n   *\n   * @param name The header name.\n   *\n   * @returns The value string if the header exists, null otherwise\n   */\n  get(name) {\n    this.init();\n    const values = this.headers.get(name.toLowerCase());\n    return values && values.length > 0 ? values[0] : null;\n  }\n  /**\n   * Retrieves the names of the headers.\n   *\n   * @returns A list of header names.\n   */\n  keys() {\n    this.init();\n    return Array.from(this.normalizedNames.values());\n  }\n  /**\n   * Retrieves a list of values for a given header.\n   *\n   * @param name The header name from which to retrieve values.\n   *\n   * @returns A string of values if the header exists, null otherwise.\n   */\n  getAll(name) {\n    this.init();\n    return this.headers.get(name.toLowerCase()) || null;\n  }\n  /**\n   * Appends a new value to the existing set of values for a header\n   * and returns them in a clone of the original instance.\n   *\n   * @param name The header name for which to append the values.\n   * @param value The value to append.\n   *\n   * @returns A clone of the HTTP headers object with the value appended to the given header.\n   */\n  append(name, value) {\n    return this.clone({\n      name,\n      value,\n      op: 'a'\n    });\n  }\n  /**\n   * Sets or modifies a value for a given header in a clone of the original instance.\n   * If the header already exists, its value is replaced with the given value\n   * in the returned object.\n   *\n   * @param name The header name.\n   * @param value The value or values to set or 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, value) {\n    return this.clone({\n      name,\n      value,\n      op: 's'\n    });\n  }\n  /**\n   * Deletes values for a given header in a clone of the original instance.\n   *\n   * @param name The header name.\n   * @param value The value or values to delete for the given header.\n   *\n   * @returns A clone of the HTTP headers object with the given value deleted.\n   */\n  delete(name, value) {\n    return this.clone({\n      name,\n      value,\n      op: 'd'\n    });\n  }\n  maybeSetNormalizedName(name, lcName) {\n    if (!this.normalizedNames.has(lcName)) {\n      this.normalizedNames.set(lcName, name);\n    }\n  }\n  init() {\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  copyFrom(other) {\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  clone(update) {\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  applyUpdate(update) {\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;\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  setHeaderEntries(name, values) {\n    const headerValues = (Array.isArray(values) ? values : [values]).map(value => value.toString());\n    const key = name.toLowerCase();\n    this.headers.set(key, headerValues);\n    this.maybeSetNormalizedName(name, key);\n  }\n  /**\n   * @internal\n   */\n  forEach(fn) {\n    this.init();\n    Array.from(this.normalizedNames.keys()).forEach(key => fn(this.normalizedNames.get(key), this.headers.get(key)));\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(headers) {\n  for (const [key, value] of Object.entries(headers)) {\n    if (!(typeof value === 'string' || typeof value === 'number') && !Array.isArray(value)) {\n      throw new Error(`Unexpected value of the \\`${key}\\` header provided. ` + `Expecting either a string, a number or an array, but got: \\`${value}\\`.`);\n    }\n  }\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 */\nclass HttpUrlEncodingCodec {\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) {\n    return standardEncoding(key);\n  }\n  /**\n   * Encodes the value of a URL parameter or query-string.\n   * @param value The value.\n   * @returns The encoded value.\n   */\n  encodeValue(value) {\n    return standardEncoding(value);\n  }\n  /**\n   * Decodes an encoded URL parameter or query-string key.\n   * @param key The encoded key name.\n   * @returns The decoded key name.\n   */\n  decodeKey(key) {\n    return decodeURIComponent(key);\n  }\n  /**\n   * Decodes an encoded URL parameter or query-string value.\n   * @param value The encoded value.\n   * @returns The decoded value.\n   */\n  decodeValue(value) {\n    return decodeURIComponent(value);\n  }\n}\nfunction paramParser(rawParams, codec) {\n  const map = new Map();\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 = rawParams.replace(/^\\?/, '').split('&');\n    params.forEach(param => {\n      const eqIdx = param.indexOf('=');\n      const [key, val] = eqIdx == -1 ? [codec.decodeKey(param), ''] : [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 * 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 = {\n  '40': '@',\n  '3A': ':',\n  '24': '$',\n  '2C': ',',\n  '3B': ';',\n  '3D': '=',\n  '3F': '?',\n  '2F': '/'\n};\nfunction standardEncoding(v) {\n  return encodeURIComponent(v).replace(STANDARD_ENCODING_REGEX, (s, t) => STANDARD_ENCODING_REPLACEMENTS[t] ?? s);\n}\nfunction valueToString(value) {\n  return `${value}`;\n}\n/**\n * An HTTP request/response body that represents serialized parameters,\n * per the MIME type `application/x-www-form-urlencoded`.\n *\n * This class is immutable; all mutation operations return a new instance.\n *\n * @publicApi\n */\nclass HttpParams {\n  constructor(options = {}) {\n    this.updates = null;\n    this.cloneFrom = null;\n    this.encoder = options.encoder || new HttpUrlEncodingCodec();\n    if (!!options.fromString) {\n      if (!!options.fromObject) {\n        throw new Error(`Cannot specify both fromString and fromObject.`);\n      }\n      this.map = paramParser(options.fromString, this.encoder);\n    } else if (!!options.fromObject) {\n      this.map = new Map();\n      Object.keys(options.fromObject).forEach(key => {\n        const value = options.fromObject[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   * 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) {\n    this.init();\n    return this.map.has(param);\n  }\n  /**\n   * Retrieves the first value for a parameter.\n   * @param param The parameter name.\n   * @returns The first value of the given parameter,\n   * or `null` if the parameter is not present.\n   */\n  get(param) {\n    this.init();\n    const res = this.map.get(param);\n    return !!res ? res[0] : null;\n  }\n  /**\n   * Retrieves all values for a  parameter.\n   * @param param The parameter name.\n   * @returns All values in a string array,\n   * or `null` if the parameter not present.\n   */\n  getAll(param) {\n    this.init();\n    return this.map.get(param) || null;\n  }\n  /**\n   * Retrieves all the parameters for this body.\n   * @returns The parameter names in a string array.\n   */\n  keys() {\n    this.init();\n    return Array.from(this.map.keys());\n  }\n  /**\n   * Appends a new value to existing values for a parameter.\n   * @param param The parameter name.\n   * @param value The new value to add.\n   * @return A new body with the appended value.\n   */\n  append(param, value) {\n    return this.clone({\n      param,\n      value,\n      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    const updates = [];\n    Object.keys(params).forEach(param => {\n      const value = params[param];\n      if (Array.isArray(value)) {\n        value.forEach(_value => {\n          updates.push({\n            param,\n            value: _value,\n            op: 'a'\n          });\n        });\n      } else {\n        updates.push({\n          param,\n          value: value,\n          op: 'a'\n        });\n      }\n    });\n    return this.clone(updates);\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, value) {\n    return this.clone({\n      param,\n      value,\n      op: 's'\n    });\n  }\n  /**\n   * Removes a given value or all values from a parameter.\n   * @param param The parameter name.\n   * @param value The value to remove, if provided.\n   * @return A new body with the given value removed, or with all values\n   * removed if no value is specified.\n   */\n  delete(param, value) {\n    return this.clone({\n      param,\n      value,\n      op: 'd'\n    });\n  }\n  /**\n   * Serializes the body to an encoded string, where key-value pairs (separated by `=`) are\n   * separated by `&`s.\n   */\n  toString() {\n    this.init();\n    return this.keys().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).map(value => eKey + '=' + this.encoder.encodeValue(value)).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 !== '').join('&');\n  }\n  clone(update) {\n    const clone = new HttpParams({\n      encoder: this.encoder\n    });\n    clone.cloneFrom = this.cloneFrom || this;\n    clone.updates = (this.updates || []).concat(update);\n    return clone;\n  }\n  init() {\n    if (this.map === null) {\n      this.map = new Map();\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/**\n * A token used to manipulate and access values stored in `HttpContext`.\n *\n * @publicApi\n */\nclass HttpContextToken {\n  constructor(defaultValue) {\n    this.defaultValue = defaultValue;\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 * ```typescript\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 * @publicApi\n */\nclass HttpContext {\n  constructor() {\n    this.map = new Map();\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(token, value) {\n    this.map.set(token, value);\n    return this;\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(token) {\n    if (!this.map.has(token)) {\n      this.map.set(token, token.defaultValue());\n    }\n    return this.map.get(token);\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) {\n    this.map.delete(token);\n    return this;\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) {\n    return this.map.has(token);\n  }\n  /**\n   * @returns a list of tokens currently stored in the context.\n   */\n  keys() {\n    return this.map.keys();\n  }\n}\n\n/**\n * Determine whether the given HTTP method may include a body.\n */\nfunction mightHaveBody(method) {\n  switch (method) {\n    case 'DELETE':\n    case 'GET':\n    case 'HEAD':\n    case 'OPTIONS':\n    case 'JSONP':\n      return false;\n    default:\n      return true;\n  }\n}\n/**\n * Safely assert whether the given value is an ArrayBuffer.\n *\n * In some execution environments ArrayBuffer is not defined.\n */\nfunction isArrayBuffer(value) {\n  return typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer;\n}\n/**\n * Safely assert whether the given value is a Blob.\n *\n * In some execution environments Blob is not defined.\n */\nfunction isBlob(value) {\n  return typeof Blob !== 'undefined' && value instanceof Blob;\n}\n/**\n * Safely assert whether the given value is a FormData instance.\n *\n * In some execution environments FormData is not defined.\n */\nfunction isFormData(value) {\n  return typeof FormData !== 'undefined' && value instanceof FormData;\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) {\n  return typeof URLSearchParams !== 'undefined' && value instanceof URLSearchParams;\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 */\nclass HttpRequest {\n  constructor(method, url, third, fourth) {\n    this.url = url;\n    /**\n     * The request body, or `null` if one isn't set.\n     *\n     * Bodies are not enforced to be immutable, as they can include a reference to any\n     * user-defined data type. However, interceptors should take care to preserve\n     * idempotence by treating them as such.\n     */\n    this.body = null;\n    /**\n     * Whether this request should be made in a way that exposes progress events.\n     *\n     * Progress events are expensive (change detection runs on each event) and so\n     * they should only be requested if the consumer intends to monitor them.\n     *\n     * Note: The `FetchBackend` doesn't support progress report on uploads.\n     */\n    this.reportProgress = false;\n    /**\n     * Whether this request should be sent with outgoing credentials (cookies).\n     */\n    this.withCredentials = false;\n    /**\n     * The expected response type of the server.\n     *\n     * This is used to parse the response appropriately before returning it to\n     * the requestee.\n     */\n    this.responseType = 'json';\n    this.method = method.toUpperCase();\n    // Next, need to figure out which argument holds the HttpRequestInit\n    // options, if any.\n    let options;\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 : null;\n      options = fourth;\n    } else {\n      // No body required, options are the third argument. The body stays null.\n      options = third;\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      // Override default response type of 'json' if one is provided.\n      if (!!options.responseType) {\n        this.responseType = options.responseType;\n      }\n      // Override headers if they're provided.\n      if (!!options.headers) {\n        this.headers = options.headers;\n      }\n      if (!!options.context) {\n        this.context = options.context;\n      }\n      if (!!options.params) {\n        this.params = options.params;\n      }\n      // We do want to assign transferCache even if it's falsy (false is valid value)\n      this.transferCache = options.transferCache;\n    }\n    // If no headers have been passed in, construct a new HttpHeaders instance.\n    this.headers ??= new HttpHeaders();\n    // If no context have been passed in, construct a new HttpContext instance.\n    this.context ??= new HttpContext();\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 = qIdx === -1 ? '?' : qIdx < url.length - 1 ? '&' : '';\n        this.urlWithParams = url + sep + params;\n      }\n    }\n  }\n  /**\n   * Transform the free-form body into a serialized format suitable for\n   * transmission to the server.\n   */\n  serializeBody() {\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 (isArrayBuffer(this.body) || isBlob(this.body) || isFormData(this.body) || isUrlSearchParams(this.body) || typeof this.body === 'string') {\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 (typeof this.body === 'object' || typeof this.body === 'boolean' || Array.isArray(this.body)) {\n      return JSON.stringify(this.body);\n    }\n    // Fall back on toString() for everything else.\n    return this.body.toString();\n  }\n  /**\n   * Examine the body and attempt to infer an appropriate MIME type\n   * for it.\n   *\n   * If no such type can be inferred, this method will return `null`.\n   */\n  detectContentTypeHeader() {\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/plain';\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 (typeof this.body === 'object' || typeof this.body === 'number' || typeof this.body === 'boolean') {\n      return 'application/json';\n    }\n    // No type could be inferred.\n    return null;\n  }\n  clone(update = {}) {\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    // 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    // Carefully handle the boolean options to differentiate between\n    // `false` and `undefined` in the update args.\n    const withCredentials = update.withCredentials !== undefined ? update.withCredentials : this.withCredentials;\n    const reportProgress = update.reportProgress !== undefined ? update.reportProgress : this.reportProgress;\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    // Pass on context if needed\n    const context = update.context ?? this.context;\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((headers, name) => headers.set(name, update.setHeaders[name]), headers);\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((params, param) => params.set(param, update.setParams[param]), params);\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    });\n  }\n}\n\n/**\n * Type enumeration for the different kinds of `HttpEvent`.\n *\n * @publicApi\n */\nvar HttpEventType;\n(function (HttpEventType) {\n  /**\n   * The request was sent out over the wire.\n   */\n  HttpEventType[HttpEventType[\"Sent\"] = 0] = \"Sent\";\n  /**\n   * An upload progress event was received.\n   *\n   * Note: The `FetchBackend` doesn't support progress report on uploads.\n   */\n  HttpEventType[HttpEventType[\"UploadProgress\"] = 1] = \"UploadProgress\";\n  /**\n   * The response status code and headers were received.\n   */\n  HttpEventType[HttpEventType[\"ResponseHeader\"] = 2] = \"ResponseHeader\";\n  /**\n   * A download progress event was received.\n   */\n  HttpEventType[HttpEventType[\"DownloadProgress\"] = 3] = \"DownloadProgress\";\n  /**\n   * The full response including the body was received.\n   */\n  HttpEventType[HttpEventType[\"Response\"] = 4] = \"Response\";\n  /**\n   * A custom event from an interceptor or a backend.\n   */\n  HttpEventType[HttpEventType[\"User\"] = 5] = \"User\";\n})(HttpEventType || (HttpEventType = {}));\n/**\n * Base class for both `HttpResponse` and `HttpHeaderResponse`.\n *\n * @publicApi\n */\nclass HttpResponseBase {\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(init, defaultStatus = HttpStatusCode.Ok, defaultStatusText = 'OK') {\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    // Cache the ok value to avoid defining a getter.\n    this.ok = this.status >= 200 && this.status < 300;\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 * @publicApi\n */\nclass HttpHeaderResponse extends HttpResponseBase {\n  /**\n   * Create a new `HttpHeaderResponse` with the given parameters.\n   */\n  constructor(init = {}) {\n    super(init);\n    this.type = HttpEventType.ResponseHeader;\n  }\n  /**\n   * Copy this `HttpHeaderResponse`, overriding its contents with the\n   * given parameter hash.\n   */\n  clone(update = {}) {\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 * A full HTTP response, including a typed response body (which may be `null`\n * if one was not returned).\n *\n * `HttpResponse` is a `HttpEvent` available on the response event\n * stream.\n *\n * @publicApi\n */\nclass HttpResponse extends HttpResponseBase {\n  /**\n   * Construct a new `HttpResponse`.\n   */\n  constructor(init = {}) {\n    super(init);\n    this.type = HttpEventType.Response;\n    this.body = init.body !== undefined ? init.body : null;\n  }\n  clone(update = {}) {\n    return new HttpResponse({\n      body: update.body !== undefined ? update.body : this.body,\n      headers: update.headers || this.headers,\n      status: update.status !== undefined ? update.status : this.status,\n      statusText: update.statusText || this.statusText,\n      url: update.url || this.url || undefined\n    });\n  }\n}\n/**\n * A response that represents an error or failure, either from a\n * non-successful HTTP status, an error while executing the request,\n * or some other failure which occurred during the parsing of the response.\n *\n * Any error returned on the `Observable` response stream will be\n * wrapped in an `HttpErrorResponse` to provide additional context about\n * the state of the HTTP layer when the error occurred. The error property\n * will contain either a wrapped Error object or the error response returned\n * from the server.\n *\n * @publicApi\n */\nclass HttpErrorResponse extends HttpResponseBase {\n  constructor(init) {\n    // Initialize with a default status of 0 / Unknown Error.\n    super(init, 0, 'Unknown Error');\n    this.name = 'HttpErrorResponse';\n    /**\n     * Errors are never okay, even when the status code is in the 2xx success range.\n     */\n    this.ok = false;\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      this.message = `Http failure response for ${init.url || '(unknown url)'}: ${init.status} ${init.statusText}`;\n    }\n    this.error = init.error || null;\n  }\n}\n/**\n * Http status codes.\n * As per https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml\n * @publicApi\n */\nvar HttpStatusCode;\n(function (HttpStatusCode) {\n  HttpStatusCode[HttpStatusCode[\"Continue\"] = 100] = \"Continue\";\n  HttpStatusCode[HttpStatusCode[\"SwitchingProtocols\"] = 101] = \"SwitchingProtocols\";\n  HttpStatusCode[HttpStatusCode[\"Processing\"] = 102] = \"Processing\";\n  HttpStatusCode[HttpStatusCode[\"EarlyHints\"] = 103] = \"EarlyHints\";\n  HttpStatusCode[HttpStatusCode[\"Ok\"] = 200] = \"Ok\";\n  HttpStatusCode[HttpStatusCode[\"Created\"] = 201] = \"Created\";\n  HttpStatusCode[HttpStatusCode[\"Accepted\"] = 202] = \"Accepted\";\n  HttpStatusCode[HttpStatusCode[\"NonAuthoritativeInformation\"] = 203] = \"NonAuthoritativeInformation\";\n  HttpStatusCode[HttpStatusCode[\"NoContent\"] = 204] = \"NoContent\";\n  HttpStatusCode[HttpStatusCode[\"ResetContent\"] = 205] = \"ResetContent\";\n  HttpStatusCode[HttpStatusCode[\"PartialContent\"] = 206] = \"PartialContent\";\n  HttpStatusCode[HttpStatusCode[\"MultiStatus\"] = 207] = \"MultiStatus\";\n  HttpStatusCode[HttpStatusCode[\"AlreadyReported\"] = 208] = \"AlreadyReported\";\n  HttpStatusCode[HttpStatusCode[\"ImUsed\"] = 226] = \"ImUsed\";\n  HttpStatusCode[HttpStatusCode[\"MultipleChoices\"] = 300] = \"MultipleChoices\";\n  HttpStatusCode[HttpStatusCode[\"MovedPermanently\"] = 301] = \"MovedPermanently\";\n  HttpStatusCode[HttpStatusCode[\"Found\"] = 302] = \"Found\";\n  HttpStatusCode[HttpStatusCode[\"SeeOther\"] = 303] = \"SeeOther\";\n  HttpStatusCode[HttpStatusCode[\"NotModified\"] = 304] = \"NotModified\";\n  HttpStatusCode[HttpStatusCode[\"UseProxy\"] = 305] = \"UseProxy\";\n  HttpStatusCode[HttpStatusCode[\"Unused\"] = 306] = \"Unused\";\n  HttpStatusCode[HttpStatusCode[\"TemporaryRedirect\"] = 307] = \"TemporaryRedirect\";\n  HttpStatusCode[HttpStatusCode[\"PermanentRedirect\"] = 308] = \"PermanentRedirect\";\n  HttpStatusCode[HttpStatusCode[\"BadRequest\"] = 400] = \"BadRequest\";\n  HttpStatusCode[HttpStatusCode[\"Unauthorized\"] = 401] = \"Unauthorized\";\n  HttpStatusCode[HttpStatusCode[\"PaymentRequired\"] = 402] = \"PaymentRequired\";\n  HttpStatusCode[HttpStatusCode[\"Forbidden\"] = 403] = \"Forbidden\";\n  HttpStatusCode[HttpStatusCode[\"NotFound\"] = 404] = \"NotFound\";\n  HttpStatusCode[HttpStatusCode[\"MethodNotAllowed\"] = 405] = \"MethodNotAllowed\";\n  HttpStatusCode[HttpStatusCode[\"NotAcceptable\"] = 406] = \"NotAcceptable\";\n  HttpStatusCode[HttpStatusCode[\"ProxyAuthenticationRequired\"] = 407] = \"ProxyAuthenticationRequired\";\n  HttpStatusCode[HttpStatusCode[\"RequestTimeout\"] = 408] = \"RequestTimeout\";\n  HttpStatusCode[HttpStatusCode[\"Conflict\"] = 409] = \"Conflict\";\n  HttpStatusCode[HttpStatusCode[\"Gone\"] = 410] = \"Gone\";\n  HttpStatusCode[HttpStatusCode[\"LengthRequired\"] = 411] = \"LengthRequired\";\n  HttpStatusCode[HttpStatusCode[\"PreconditionFailed\"] = 412] = \"PreconditionFailed\";\n  HttpStatusCode[HttpStatusCode[\"PayloadTooLarge\"] = 413] = \"PayloadTooLarge\";\n  HttpStatusCode[HttpStatusCode[\"UriTooLong\"] = 414] = \"UriTooLong\";\n  HttpStatusCode[HttpStatusCode[\"UnsupportedMediaType\"] = 415] = \"UnsupportedMediaType\";\n  HttpStatusCode[HttpStatusCode[\"RangeNotSatisfiable\"] = 416] = \"RangeNotSatisfiable\";\n  HttpStatusCode[HttpStatusCode[\"ExpectationFailed\"] = 417] = \"ExpectationFailed\";\n  HttpStatusCode[HttpStatusCode[\"ImATeapot\"] = 418] = \"ImATeapot\";\n  HttpStatusCode[HttpStatusCode[\"MisdirectedRequest\"] = 421] = \"MisdirectedRequest\";\n  HttpStatusCode[HttpStatusCode[\"UnprocessableEntity\"] = 422] = \"UnprocessableEntity\";\n  HttpStatusCode[HttpStatusCode[\"Locked\"] = 423] = \"Locked\";\n  HttpStatusCode[HttpStatusCode[\"FailedDependency\"] = 424] = \"FailedDependency\";\n  HttpStatusCode[HttpStatusCode[\"TooEarly\"] = 425] = \"TooEarly\";\n  HttpStatusCode[HttpStatusCode[\"UpgradeRequired\"] = 426] = \"UpgradeRequired\";\n  HttpStatusCode[HttpStatusCode[\"PreconditionRequired\"] = 428] = \"PreconditionRequired\";\n  HttpStatusCode[HttpStatusCode[\"TooManyRequests\"] = 429] = \"TooManyRequests\";\n  HttpStatusCode[HttpStatusCode[\"RequestHeaderFieldsTooLarge\"] = 431] = \"RequestHeaderFieldsTooLarge\";\n  HttpStatusCode[HttpStatusCode[\"UnavailableForLegalReasons\"] = 451] = \"UnavailableForLegalReasons\";\n  HttpStatusCode[HttpStatusCode[\"InternalServerError\"] = 500] = \"InternalServerError\";\n  HttpStatusCode[HttpStatusCode[\"NotImplemented\"] = 501] = \"NotImplemented\";\n  HttpStatusCode[HttpStatusCode[\"BadGateway\"] = 502] = \"BadGateway\";\n  HttpStatusCode[HttpStatusCode[\"ServiceUnavailable\"] = 503] = \"ServiceUnavailable\";\n  HttpStatusCode[HttpStatusCode[\"GatewayTimeout\"] = 504] = \"GatewayTimeout\";\n  HttpStatusCode[HttpStatusCode[\"HttpVersionNotSupported\"] = 505] = \"HttpVersionNotSupported\";\n  HttpStatusCode[HttpStatusCode[\"VariantAlsoNegotiates\"] = 506] = \"VariantAlsoNegotiates\";\n  HttpStatusCode[HttpStatusCode[\"InsufficientStorage\"] = 507] = \"InsufficientStorage\";\n  HttpStatusCode[HttpStatusCode[\"LoopDetected\"] = 508] = \"LoopDetected\";\n  HttpStatusCode[HttpStatusCode[\"NotExtended\"] = 510] = \"NotExtended\";\n  HttpStatusCode[HttpStatusCode[\"NetworkAuthenticationRequired\"] = 511] = \"NetworkAuthenticationRequired\";\n})(HttpStatusCode || (HttpStatusCode = {}));\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(options, body) {\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    transferCache: options.transferCache\n  };\n}\n/**\n * Performs HTTP requests.\n * This service is available as an injectable class, with methods to perform HTTP requests.\n * Each request method has multiple signatures, and the return type varies based on\n * the signature that is called (mainly the values of `observe` and `responseType`).\n *\n * Note that the `responseType` *options* value is a String that identifies the\n * single data type of the response.\n * A single overload version of the method handles each response type.\n * The value of `responseType` cannot be a union, as the combined signature could imply.\n\n *\n * @usageNotes\n * Sample HTTP requests for the [Tour of Heroes](/tutorial/tour-of-heroes/toh-pt0) application.\n *\n * ### HTTP Request Example\n *\n * ```\n *  // GET heroes whose name contains search term\n * searchHeroes(term: string): observable<Hero[]>{\n *\n *  const params = new HttpParams({fromString: 'name=term'});\n *    return this.httpClient.request('GET', this.heroesUrl, {responseType:'json', params});\n * }\n * ```\n *\n * Alternatively, the parameter string can be used without invoking HttpParams\n * by directly joining to the URL.\n * ```\n * this.httpClient.request('GET', this.heroesUrl + '?' + 'name=term', {responseType:'json'});\n * ```\n *\n *\n * ### JSONP Example\n * ```\n * requestJsonp(url, callback = 'callback') {\n *  return this.httpClient.jsonp(this.heroesURL, callback);\n * }\n * ```\n *\n * ### PATCH Example\n * ```\n * // PATCH one of the heroes' name\n * patchHero (id: number, heroName: string): Observable<{}> {\n * const url = `${this.heroesUrl}/${id}`;   // PATCH api/heroes/42\n *  return this.httpClient.patch(url, {name: heroName}, httpOptions)\n *    .pipe(catchError(this.handleError('patchHero')));\n * }\n * ```\n *\n * @see [HTTP Guide](guide/understanding-communicating-with-http)\n * @see [HTTP Request](api/common/http/HttpRequest)\n *\n * @publicApi\n */\nclass HttpClient {\n  constructor(handler) {\n    this.handler = handler;\n  }\n  /**\n   * Constructs an observable for a generic HTTP request that, when subscribed,\n   * fires the request through the chain of registered interceptors and on to the\n   * server.\n   *\n   * You can pass an `HttpRequest` directly as the only parameter. In this case,\n   * the call returns an observable of the raw `HttpEvent` stream.\n   *\n   * Alternatively you can pass an HTTP method as the first parameter,\n   * a URL string as the second, and an options hash containing the request body as the third.\n   * See `addBody()`. In this case, the specified `responseType` and `observe` options determine the\n   * type of returned observable.\n   *   * The `responseType` value determines how a successful response body is parsed.\n   *   * If `responseType` is the default `json`, you can pass a type interface for the resulting\n   * object as a type parameter to the call.\n   *\n   * The `observe` value determines the return type, according to what you are interested in\n   * observing.\n   *   * An `observe` value of events returns an observable of the raw `HttpEvent` stream, including\n   * progress events by default.\n   *   * An `observe` value of response returns an observable of `HttpResponse<T>`,\n   * where the `T` parameter depends on the `responseType` and any optionally provided type\n   * parameter.\n   *   * An `observe` value of body returns an observable of `<T>` with the same `T` body type.\n   *\n   */\n  request(first, url, options = {}) {\n    let req;\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      // Figure out the headers.\n      let headers = undefined;\n      if (options.headers instanceof HttpHeaders) {\n        headers = options.headers;\n      } else {\n        headers = new HttpHeaders(options.headers);\n      }\n      // Sort out parameters.\n      let params = undefined;\n      if (!!options.params) {\n        if (options.params instanceof HttpParams) {\n          params = options.params;\n        } else {\n          params = new HttpParams({\n            fromObject: options.params\n          });\n        }\n      }\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      });\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$ = of(req).pipe(concatMap(req => this.handler.handle(req)));\n    // If coming via the API signature which accepts a previously constructed HttpRequest,\n    // the only option is to get the event stream. Otherwise, return the event stream if\n    // that is what was requested.\n    if (first instanceof HttpRequest || options.observe === 'events') {\n      return events$;\n    }\n    // The requested stream contains either the full response or the body. In either\n    // case, the first step is to filter the event stream to extract a stream of\n    // responses(s).\n    const res$ = events$.pipe(filter(event => event instanceof HttpResponse));\n    // Decide which stream to return.\n    switch (options.observe || 'body') {\n      case 'body':\n        // The requested stream is the body. Map the response stream to the response\n        // body. This could be done more simply, but a misbehaving interceptor might\n        // transform the response body into a different format and ignore the requested\n        // responseType. Guard against this by validating that the response is of the\n        // requested type.\n        switch (req.responseType) {\n          case 'arraybuffer':\n            return res$.pipe(map(res => {\n              // Validate that the body is an ArrayBuffer.\n              if (res.body !== null && !(res.body instanceof ArrayBuffer)) {\n                throw new Error('Response is not an ArrayBuffer.');\n              }\n              return res.body;\n            }));\n          case 'blob':\n            return res$.pipe(map(res => {\n              // Validate that the body is a Blob.\n              if (res.body !== null && !(res.body instanceof Blob)) {\n                throw new Error('Response is not a Blob.');\n              }\n              return res.body;\n            }));\n          case 'text':\n            return res$.pipe(map(res => {\n              // Validate that the body is a string.\n              if (res.body !== null && typeof res.body !== 'string') {\n                throw new Error('Response is not a string.');\n              }\n              return res.body;\n            }));\n          case 'json':\n          default:\n            // No validation needed for JSON responses, as they can be of any type.\n            return res$.pipe(map(res => res.body));\n        }\n      case 'response':\n        // The response stream was requested directly, so return it.\n        return res$;\n      default:\n        // Guard against new future observe types being added.\n        throw new Error(`Unreachable: unhandled observe type ${options.observe}}`);\n    }\n  }\n  /**\n   * Constructs an observable that, when subscribed, causes the configured\n   * `DELETE` request to execute on the server. See the individual overloads for\n   * details on the return type.\n   *\n   * @param url     The endpoint URL.\n   * @param options The HTTP options to send with the request.\n   *\n   */\n  delete(url, options = {}) {\n    return this.request('DELETE', url, options);\n  }\n  /**\n   * Constructs an observable that, when subscribed, causes the configured\n   * `GET` request to execute on the server. See the individual overloads for\n   * details on the return type.\n   */\n  get(url, options = {}) {\n    return this.request('GET', url, options);\n  }\n  /**\n   * Constructs an observable that, when subscribed, causes the configured\n   * `HEAD` request to execute on the server. The `HEAD` method returns\n   * meta information about the resource without transferring the\n   * resource itself. See the individual overloads for\n   * details on the return type.\n   */\n  head(url, options = {}) {\n    return this.request('HEAD', url, options);\n  }\n  /**\n   * Constructs an `Observable` that, when subscribed, causes a request with the special method\n   * `JSONP` to be dispatched via the interceptor pipeline.\n   * The [JSONP pattern](https://en.wikipedia.org/wiki/JSONP) works around limitations of certain\n   * API endpoints that don't support newer,\n   * and preferable [CORS](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS) protocol.\n   * JSONP treats the endpoint API as a JavaScript file and tricks the browser to process the\n   * requests even if the API endpoint is not located on the same domain (origin) as the client-side\n   * application making the request.\n   * The endpoint API must support JSONP callback for JSONP requests to work.\n   * The resource API returns the JSON response wrapped in a callback function.\n   * You can pass the callback function name as one of the query parameters.\n   * Note that JSONP requests can only be used with `GET` requests.\n   *\n   * @param url The resource URL.\n   * @param callbackParam The callback function name.\n   *\n   */\n  jsonp(url, callbackParam) {\n    return this.request('JSONP', url, {\n      params: new HttpParams().append(callbackParam, 'JSONP_CALLBACK'),\n      observe: 'body',\n      responseType: 'json'\n    });\n  }\n  /**\n   * Constructs an `Observable` that, when subscribed, causes the configured\n   * `OPTIONS` request to execute on the server. This method allows the client\n   * to determine the supported HTTP methods and other capabilities of an endpoint,\n   * without implying a resource action. See the individual overloads for\n   * details on the return type.\n   */\n  options(url, options = {}) {\n    return this.request('OPTIONS', url, options);\n  }\n  /**\n   * Constructs an observable that, when subscribed, causes the configured\n   * `PATCH` request to execute on the server. See the individual overloads for\n   * details on the return type.\n   */\n  patch(url, body, options = {}) {\n    return this.request('PATCH', url, addBody(options, body));\n  }\n  /**\n   * Constructs an observable that, when subscribed, causes the configured\n   * `POST` request to execute on the server. The server responds with the location of\n   * the replaced resource. See the individual overloads for\n   * details on the return type.\n   */\n  post(url, body, options = {}) {\n    return this.request('POST', url, addBody(options, body));\n  }\n  /**\n   * Constructs an observable that, when subscribed, causes the configured\n   * `PUT` request to execute on the server. The `PUT` method replaces an existing resource\n   * with a new set of values.\n   * See the individual overloads for details on the return type.\n   */\n  put(url, body, options = {}) {\n    return this.request('PUT', url, addBody(options, body));\n  }\n  static #_ = this.ɵfac = function HttpClient_Factory(t) {\n    return new (t || HttpClient)(i0.ɵɵinject(HttpHandler));\n  };\n  static #_2 = this.ɵprov = /* @__PURE__ */i0.ɵɵdefineInjectable({\n    token: HttpClient,\n    factory: HttpClient.ɵfac\n  });\n}\n(() => {\n  (typeof ngDevMode === \"undefined\" || ngDevMode) && i0.ɵsetClassMetadata(HttpClient, [{\n    type: Injectable\n  }], () => [{\n    type: HttpHandler\n  }], null);\n})();\nconst XSSI_PREFIX$1 = /^\\)\\]\\}',?\\n/;\nconst REQUEST_URL_HEADER = `X-Request-URL`;\n/**\n * Determine an appropriate URL for the response, by checking either\n * response url or the X-Request-URL header.\n */\nfunction getResponseUrl$1(response) {\n  if (response.url) {\n    return response.url;\n  }\n  // stored as lowercase in the map\n  const xRequestUrl = REQUEST_URL_HEADER.toLocaleLowerCase();\n  return response.headers.get(xRequestUrl);\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 */\nclass FetchBackend {\n  constructor() {\n    // We need to bind the native fetch to its context or it will throw an \"illegal invocation\"\n    this.fetchImpl = inject(FetchFactory, {\n      optional: true\n    })?.fetch ?? fetch.bind(globalThis);\n    this.ngZone = inject(NgZone);\n  }\n  handle(request) {\n    return new Observable(observer => {\n      const aborter = new AbortController();\n      this.doRequest(request, aborter.signal, observer).then(noop, error => observer.error(new HttpErrorResponse({\n        error\n      })));\n      return () => aborter.abort();\n    });\n  }\n  doRequest(request, signal, observer) {\n    var _this = this;\n    return _asyncToGenerator(function* () {\n      const init = _this.createRequestInit(request);\n      let response;\n      try {\n        const fetchPromise = _this.fetchImpl(request.urlWithParams, {\n          signal,\n          ...init\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        // Send the `Sent` event before awaiting the response.\n        observer.next({\n          type: HttpEventType.Sent\n        });\n        response = yield fetchPromise;\n      } catch (error) {\n        observer.error(new HttpErrorResponse({\n          error,\n          status: error.status ?? 0,\n          statusText: error.statusText,\n          url: request.urlWithParams,\n          headers: error.headers\n        }));\n        return;\n      }\n      const headers = new HttpHeaders(response.headers);\n      const statusText = response.statusText;\n      const url = getResponseUrl$1(response) ?? request.urlWithParams;\n      let status = response.status;\n      let body = null;\n      if (request.reportProgress) {\n        observer.next(new HttpHeaderResponse({\n          headers,\n          status,\n          statusText,\n          url\n        }));\n      }\n      if (response.body) {\n        // Read Progress\n        const contentLength = response.headers.get('content-length');\n        const chunks = [];\n        const reader = response.body.getReader();\n        let receivedLength = 0;\n        let decoder;\n        let partialText;\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        // 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        yield _this.ngZone.runOutsideAngular( /*#__PURE__*/_asyncToGenerator(function* () {\n          while (true) {\n            const {\n              done,\n              value\n            } = yield reader.read();\n            if (done) {\n              break;\n            }\n            chunks.push(value);\n            receivedLength += value.length;\n            if (request.reportProgress) {\n              partialText = request.responseType === 'text' ? (partialText ?? '') + (decoder ??= new TextDecoder()).decode(value, {\n                stream: true\n              }) : undefined;\n              const reportProgress = () => observer.next({\n                type: HttpEventType.DownloadProgress,\n                total: contentLength ? +contentLength : undefined,\n                loaded: receivedLength,\n                partialText\n              });\n              reqZone ? reqZone.run(reportProgress) : reportProgress();\n            }\n          }\n        }));\n        // Combine all chunks.\n        const chunksAll = _this.concatChunks(chunks, receivedLength);\n        try {\n          const contentType = response.headers.get('Content-Type') ?? '';\n          body = _this.parseBody(request, chunksAll, contentType);\n        } catch (error) {\n          // Body loading or parsing failed\n          observer.error(new HttpErrorResponse({\n            error,\n            headers: new HttpHeaders(response.headers),\n            status: response.status,\n            statusText: response.statusText,\n            url: getResponseUrl$1(response) ?? request.urlWithParams\n          }));\n          return;\n        }\n      }\n      // Same behavior as the XhrBackend\n      if (status === 0) {\n        status = body ? HttpStatusCode.Ok : 0;\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      if (ok) {\n        observer.next(new HttpResponse({\n          body,\n          headers,\n          status,\n          statusText,\n          url\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(new HttpErrorResponse({\n          error: body,\n          headers,\n          status,\n          statusText,\n          url\n        }));\n      }\n    })();\n  }\n  parseBody(request, binContent, contentType) {\n    switch (request.responseType) {\n      case 'json':\n        // stripping the XSSI when present\n        const text = new TextDecoder().decode(binContent).replace(XSSI_PREFIX$1, '');\n        return text === '' ? null : JSON.parse(text);\n      case 'text':\n        return new TextDecoder().decode(binContent);\n      case 'blob':\n        return new Blob([binContent], {\n          type: contentType\n        });\n      case 'arraybuffer':\n        return binContent.buffer;\n    }\n  }\n  createRequestInit(req) {\n    // We could share some of this logic with the XhrBackend\n    const headers = {};\n    const credentials = req.withCredentials ? 'include' : undefined;\n    // Setting all the requested headers.\n    req.headers.forEach((name, values) => headers[name] = values.join(','));\n    // Add an Accept header if one isn't present already.\n    headers['Accept'] ??= 'application/json, text/plain, */*';\n    // Auto-detect the Content-Type header if one isn't present already.\n    if (!headers['Content-Type']) {\n      const detectedType = req.detectContentTypeHeader();\n      // Sometimes Content-Type detection fails.\n      if (detectedType !== null) {\n        headers['Content-Type'] = detectedType;\n      }\n    }\n    return {\n      body: req.serializeBody(),\n      method: req.method,\n      headers,\n      credentials\n    };\n  }\n  concatChunks(chunks, totalLength) {\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    return chunksAll;\n  }\n  static #_ = this.ɵfac = function FetchBackend_Factory(t) {\n    return new (t || FetchBackend)();\n  };\n  static #_2 = this.ɵprov = /* @__PURE__ */i0.ɵɵdefineInjectable({\n    token: FetchBackend,\n    factory: FetchBackend.ɵfac\n  });\n}\n(() => {\n  (typeof ngDevMode === \"undefined\" || ngDevMode) && i0.ɵsetClassMetadata(FetchBackend, [{\n    type: Injectable\n  }], null, null);\n})();\n/**\n * Abstract class to provide a mocked implementation of `fetch()`\n */\nclass FetchFactory {}\nfunction noop() {}\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) {\n  promise.then(noop, noop);\n}\nfunction interceptorChainEndFn(req, finalHandlerFn) {\n  return finalHandlerFn(req);\n}\n/**\n * Constructs a `ChainedInterceptorFn` which adapts a legacy `HttpInterceptor` to the\n * `ChainedInterceptorFn` interface.\n */\nfunction adaptLegacyInterceptorToChain(chainTailFn, interceptor) {\n  return (initialRequest, finalHandlerFn) => interceptor.intercept(initialRequest, {\n    handle: downstreamRequest => chainTailFn(downstreamRequest, finalHandlerFn)\n  });\n}\n/**\n * Constructs a `ChainedInterceptorFn` which wraps and invokes a functional interceptor in the given\n * injector.\n */\nfunction chainedInterceptorFn(chainTailFn, interceptorFn, injector) {\n  // clang-format off\n  return (initialRequest, finalHandlerFn) => runInInjectionContext(injector, () => interceptorFn(initialRequest, downstreamRequest => chainTailFn(downstreamRequest, finalHandlerFn)));\n  // clang-format on\n}\n/**\n * A multi-provider token that represents the array of registered\n * `HttpInterceptor` objects.\n *\n * @publicApi\n */\nconst HTTP_INTERCEPTORS = new InjectionToken(ngDevMode ? 'HTTP_INTERCEPTORS' : '');\n/**\n * A multi-provided token of `HttpInterceptorFn`s.\n */\nconst HTTP_INTERCEPTOR_FNS = new InjectionToken(ngDevMode ? 'HTTP_INTERCEPTOR_FNS' : '');\n/**\n * A multi-provided token of `HttpInterceptorFn`s that are only set in root.\n */\nconst HTTP_ROOT_INTERCEPTOR_FNS = new InjectionToken(ngDevMode ? 'HTTP_ROOT_INTERCEPTOR_FNS' : '');\n/**\n * A provider to set a global primary http backend. If set, it will override the default one\n */\nconst PRIMARY_HTTP_BACKEND = new InjectionToken(ngDevMode ? 'PRIMARY_HTTP_BACKEND' : '');\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 */\nfunction legacyInterceptorFnFactory() {\n  let chain = null;\n  return (req, handler) => {\n    if (chain === null) {\n      const interceptors = inject(HTTP_INTERCEPTORS, {\n        optional: true\n      }) ?? [];\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(adaptLegacyInterceptorToChain, interceptorChainEndFn);\n    }\n    const pendingTasks = inject(ɵPendingTasks);\n    const taskId = pendingTasks.add();\n    return chain(req, handler).pipe(finalize(() => pendingTasks.remove(taskId)));\n  };\n}\nlet fetchBackendWarningDisplayed = false;\n/** Internal function to reset the flag in tests */\nfunction resetFetchBackendWarningFlag() {\n  fetchBackendWarningDisplayed = false;\n}\nclass HttpInterceptorHandler extends HttpHandler {\n  constructor(backend, injector) {\n    super();\n    this.backend = backend;\n    this.injector = injector;\n    this.chain = null;\n    this.pendingTasks = inject(ɵPendingTasks);\n    // Check if there is a preferred HTTP backend configured and use it if that's the case.\n    // This is needed to enable `FetchBackend` globally for all HttpClient's when `withFetch`\n    // is used.\n    const primaryHttpBackend = inject(PRIMARY_HTTP_BACKEND, {\n      optional: true\n    });\n    this.backend = primaryHttpBackend ?? backend;\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      const isServer = isPlatformServer(injector.get(PLATFORM_ID));\n      if (isServer && !(this.backend instanceof FetchBackend)) {\n        fetchBackendWarningDisplayed = true;\n        injector.get(ɵConsole).warn(ɵformatRuntimeError(2801 /* RuntimeErrorCode.NOT_USING_FETCH_BACKEND_IN_SSR */, 'Angular detected that `HttpClient` is not configured ' + \"to use `fetch` APIs. It's strongly recommended to \" + 'enable `fetch` for applications that use Server-Side Rendering ' + 'for better performance and compatibility. ' + 'To enable `fetch`, add the `withFetch()` to the `provideHttpClient()` ' + 'call at the root of the application.'));\n      }\n    }\n  }\n  handle(initialRequest) {\n    if (this.chain === null) {\n      const dedupedInterceptorFns = Array.from(new Set([...this.injector.get(HTTP_INTERCEPTOR_FNS), ...this.injector.get(HTTP_ROOT_INTERCEPTOR_FNS, [])]));\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((nextSequencedFn, interceptorFn) => chainedInterceptorFn(nextSequencedFn, interceptorFn, this.injector), interceptorChainEndFn);\n    }\n    const taskId = this.pendingTasks.add();\n    return this.chain(initialRequest, downstreamRequest => this.backend.handle(downstreamRequest)).pipe(finalize(() => this.pendingTasks.remove(taskId)));\n  }\n  static #_ = this.ɵfac = function HttpInterceptorHandler_Factory(t) {\n    return new (t || HttpInterceptorHandler)(i0.ɵɵinject(HttpBackend), i0.ɵɵinject(i0.EnvironmentInjector));\n  };\n  static #_2 = this.ɵprov = /* @__PURE__ */i0.ɵɵdefineInjectable({\n    token: HttpInterceptorHandler,\n    factory: HttpInterceptorHandler.ɵfac\n  });\n}\n(() => {\n  (typeof ngDevMode === \"undefined\" || ngDevMode) && i0.ɵsetClassMetadata(HttpInterceptorHandler, [{\n    type: Injectable\n  }], () => [{\n    type: HttpBackend\n  }, {\n    type: i0.EnvironmentInjector\n  }], null);\n})();\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 = 0;\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;\n// Error text given when a JSONP script is injected, but doesn't invoke the callback\n// passed in its URL.\nconst JSONP_ERR_NO_CALLBACK = 'JSONP injected script did not invoke callback.';\n// Error text given when a request is passed to the JsonpClientBackend that doesn't\n// have a request method JSONP.\nconst JSONP_ERR_WRONG_METHOD = 'JSONP requests must use JSONP request method.';\nconst JSONP_ERR_WRONG_RESPONSE_TYPE = 'JSONP requests must use Json response type.';\n// Error text given when a request is passed to the JsonpClientBackend that has\n// headers set\nconst JSONP_ERR_HEADERS_NOT_SUPPORTED = 'JSONP requests do not support headers.';\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 */\nclass JsonpCallbackContext {}\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 */\nfunction jsonpCallbackContext() {\n  if (typeof window === 'object') {\n    return window;\n  }\n  return {};\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 */\nclass JsonpClientBackend {\n  constructor(callbackMap, document) {\n    this.callbackMap = callbackMap;\n    this.document = document;\n    /**\n     * A resolved promise that can be used to schedule microtasks in the event handlers.\n     */\n    this.resolvedPromise = Promise.resolve();\n  }\n  /**\n   * Get the name of the next callback method, by incrementing the global `nextRequestId`.\n   */\n  nextCallback() {\n    return `ng_jsonp_callback_${nextRequestId++}`;\n  }\n  /**\n   * Processes a JSONP request and returns an event stream of the results.\n   * @param req The request object.\n   * @returns An observable of the response events.\n   *\n   */\n  handle(req) {\n    // Firstly, check both the method and response type. If either doesn't match\n    // then the request was improperly routed here and cannot be handled.\n    if (req.method !== 'JSONP') {\n      throw new Error(JSONP_ERR_WRONG_METHOD);\n    } else if (req.responseType !== 'json') {\n      throw new Error(JSONP_ERR_WRONG_RESPONSE_TYPE);\n    }\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 Error(JSONP_ERR_HEADERS_NOT_SUPPORTED);\n    }\n    // Everything else happens inside the Observable boundary.\n    return new Observable(observer => {\n      // The first step to make a request is to generate the callback name, and replace the\n      // callback placeholder in the URL with the name. Care has to be taken here to ensure\n      // a trailing &, if matched, gets inserted back into the URL in the correct place.\n      const callback = this.nextCallback();\n      const url = req.urlWithParams.replace(/=JSONP_CALLBACK(&|$)/, `=${callback}$1`);\n      // Construct the <script> tag and point it at the URL.\n      const node = this.document.createElement('script');\n      node.src = url;\n      // A JSONP request requires waiting for multiple callbacks. These variables\n      // are closed over and track state across those callbacks.\n      // The response object, if one has been received, or null otherwise.\n      let body = null;\n      // Whether the response callback has been called.\n      let finished = false;\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 => {\n        // Data has been received from the JSONP script. Firstly, delete this callback.\n        delete this.callbackMap[callback];\n        // Set state to indicate data was received.\n        body = data;\n        finished = true;\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        // Remove the <script> tag if it's still on the page.\n        if (node.parentNode) {\n          node.parentNode.removeChild(node);\n        }\n        // Remove the response callback from the callbackMap (window object in the\n        // browser).\n        delete this.callbackMap[callback];\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 = event => {\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          // 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(new HttpErrorResponse({\n              url,\n              status: 0,\n              statusText: 'JSONP Error',\n              error: new Error(JSONP_ERR_NO_CALLBACK)\n            }));\n            return;\n          }\n          // Success. body either contains the response body or null if none was\n          // returned.\n          observer.next(new HttpResponse({\n            body,\n            status: HttpStatusCode.Ok,\n            statusText: 'OK',\n            url\n          }));\n          // Complete the stream, the response is over.\n          observer.complete();\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 => {\n        cleanup();\n        // Wrap the error in a HttpErrorResponse.\n        observer.error(new HttpErrorResponse({\n          error,\n          status: 0,\n          statusText: 'JSONP Error',\n          url\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      // The request has now been successfully sent.\n      observer.next({\n        type: HttpEventType.Sent\n      });\n      // Cancellation handler.\n      return () => {\n        if (!finished) {\n          this.removeListeners(node);\n        }\n        // And finally, clean up the page.\n        cleanup();\n      };\n    });\n  }\n  removeListeners(script) {\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.createHTMLDocument();\n    foreignDocument.adoptNode(script);\n  }\n  static #_ = this.ɵfac = function JsonpClientBackend_Factory(t) {\n    return new (t || JsonpClientBackend)(i0.ɵɵinject(JsonpCallbackContext), i0.ɵɵinject(DOCUMENT));\n  };\n  static #_2 = this.ɵprov = /* @__PURE__ */i0.ɵɵdefineInjectable({\n    token: JsonpClientBackend,\n    factory: JsonpClientBackend.ɵfac\n  });\n}\n(() => {\n  (typeof ngDevMode === \"undefined\" || ngDevMode) && i0.ɵsetClassMetadata(JsonpClientBackend, [{\n    type: Injectable\n  }], () => [{\n    type: JsonpCallbackContext\n  }, {\n    type: undefined,\n    decorators: [{\n      type: Inject,\n      args: [DOCUMENT]\n    }]\n  }], null);\n})();\n/**\n * Identifies requests with the method JSONP and shifts them to the `JsonpClientBackend`.\n */\nfunction jsonpInterceptorFn(req, next) {\n  if (req.method === 'JSONP') {\n    return inject(JsonpClientBackend).handle(req);\n  }\n  // Fall through for normal HTTP requests.\n  return next(req);\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 */\nclass JsonpInterceptor {\n  constructor(injector) {\n    this.injector = injector;\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, next) {\n    return runInInjectionContext(this.injector, () => jsonpInterceptorFn(initialRequest, downstreamRequest => next.handle(downstreamRequest)));\n  }\n  static #_ = this.ɵfac = function JsonpInterceptor_Factory(t) {\n    return new (t || JsonpInterceptor)(i0.ɵɵinject(i0.EnvironmentInjector));\n  };\n  static #_2 = this.ɵprov = /* @__PURE__ */i0.ɵɵdefineInjectable({\n    token: JsonpInterceptor,\n    factory: JsonpInterceptor.ɵfac\n  });\n}\n(() => {\n  (typeof ngDevMode === \"undefined\" || ngDevMode) && i0.ɵsetClassMetadata(JsonpInterceptor, [{\n    type: Injectable\n  }], () => [{\n    type: i0.EnvironmentInjector\n  }], null);\n})();\nconst XSSI_PREFIX = /^\\)\\]\\}',?\\n/;\n/**\n * Determine an appropriate URL for the response, by checking either\n * XMLHttpRequest.responseURL or the X-Request-URL header.\n */\nfunction getResponseUrl(xhr) {\n  if ('responseURL' in xhr && xhr.responseURL) {\n    return xhr.responseURL;\n  }\n  if (/^X-Request-URL:/m.test(xhr.getAllResponseHeaders())) {\n    return xhr.getResponseHeader('X-Request-URL');\n  }\n  return null;\n}\n/**\n * Uses `XMLHttpRequest` to send requests to a backend server.\n * @see {@link HttpHandler}\n * @see {@link JsonpClientBackend}\n *\n * @publicApi\n */\nclass HttpXhrBackend {\n  constructor(xhrFactory) {\n    this.xhrFactory = xhrFactory;\n  }\n  /**\n   * Processes a request and returns a stream of response events.\n   * @param req The request object.\n   * @returns An observable of the response events.\n   */\n  handle(req) {\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 ɵRuntimeError(-2800 /* RuntimeErrorCode.MISSING_JSONP_MODULE */, (typeof ngDevMode === 'undefined' || ngDevMode) && `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    // 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 = this.xhrFactory;\n    const source = xhrFactory.ɵloadImpl ? from(xhrFactory.ɵloadImpl()) : of(null);\n    return source.pipe(switchMap(() => {\n      // Everything happens on Observable subscription.\n      return new Observable(observer => {\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        // Add all the requested headers.\n        req.headers.forEach((name, values) => xhr.setRequestHeader(name, values.join(',')));\n        // Add an Accept header if one isn't present already.\n        if (!req.headers.has('Accept')) {\n          xhr.setRequestHeader('Accept', 'application/json, text/plain, */*');\n        }\n        // Auto-detect the Content-Type header if one isn't present already.\n        if (!req.headers.has('Content-Type')) {\n          const detectedType = req.detectContentTypeHeader();\n          // Sometimes Content-Type detection fails.\n          if (detectedType !== null) {\n            xhr.setRequestHeader('Content-Type', detectedType);\n          }\n        }\n        // Set the responseType if one was requested.\n        if (req.responseType) {\n          const responseType = req.responseType.toLowerCase();\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';\n        }\n        // Serialize the request body if one is present. If not, this will be set to null.\n        const reqBody = req.serializeBody();\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 = null;\n        // partialFromXhr extracts the HttpHeaderResponse from the current XMLHttpRequest\n        // state, and memoizes it into headerResponse.\n        const partialFromXhr = () => {\n          if (headerResponse !== null) {\n            return headerResponse;\n          }\n          const statusText = xhr.statusText || 'OK';\n          // Parse headers from XMLHttpRequest - this step is lazy.\n          const headers = new HttpHeaders(xhr.getAllResponseHeaders());\n          // Read the response URL from the XMLHttpResponse instance and fall back on the\n          // request URL.\n          const url = getResponseUrl(xhr) || req.url;\n          // Construct the HttpHeaderResponse and memoize it.\n          headerResponse = new HttpHeaderResponse({\n            headers,\n            status: xhr.status,\n            statusText,\n            url\n          });\n          return headerResponse;\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        // First up is the load event, which represents a response being fully available.\n        const onLoad = () => {\n          // Read response state from the memoized partial data.\n          let {\n            headers,\n            status,\n            statusText,\n            url\n          } = partialFromXhr();\n          // The body will be read out if present.\n          let body = null;\n          if (status !== HttpStatusCode.NoContent) {\n            // Use XMLHttpRequest.response if set, responseText otherwise.\n            body = typeof xhr.response === 'undefined' ? xhr.responseText : xhr.response;\n          }\n          // Normalize another potential bug (this one comes from CORS).\n          if (status === 0) {\n            status = !!body ? HttpStatusCode.Ok : 0;\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          // 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              // 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 = {\n                  error,\n                  text: body\n                };\n              }\n            }\n          }\n          if (ok) {\n            // A successful response is delivered on the event stream.\n            observer.next(new HttpResponse({\n              body,\n              headers,\n              status,\n              statusText,\n              url: url || undefined\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(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        // 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 = error => {\n          const {\n            url\n          } = 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        // 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        // The download progress event handler, which is only registered if\n        // progress events are enabled.\n        const onDownProgress = event => {\n          // Send the HttpResponseHeaders event if it hasn't been sent already.\n          if (!sentHeaders) {\n            observer.next(partialFromXhr());\n            sentHeaders = true;\n          }\n          // Start building the download progress event to deliver on the response\n          // event stream.\n          let progressEvent = {\n            type: HttpEventType.DownloadProgress,\n            loaded: event.loaded\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          // 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          // Finally, fire the event.\n          observer.next(progressEvent);\n        };\n        // The upload progress event handler, which is only registered if\n        // progress events are enabled.\n        const onUpProgress = event => {\n          // Upload progress events are simpler. Begin building the progress\n          // event.\n          let progress = {\n            type: HttpEventType.UploadProgress,\n            loaded: event.loaded\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          // Send the event.\n          observer.next(progress);\n        };\n        // By default, register for load and error events.\n        xhr.addEventListener('load', onLoad);\n        xhr.addEventListener('error', onError);\n        xhr.addEventListener('timeout', onError);\n        xhr.addEventListener('abort', onError);\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          // 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        // Fire the request, and notify the event stream that it was fired.\n        xhr.send(reqBody);\n        observer.next({\n          type: HttpEventType.Sent\n        });\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', onError);\n          if (req.reportProgress) {\n            xhr.removeEventListener('progress', onDownProgress);\n            if (reqBody !== null && xhr.upload) {\n              xhr.upload.removeEventListener('progress', onUpProgress);\n            }\n          }\n          // Finally, abort the in-flight request.\n          if (xhr.readyState !== xhr.DONE) {\n            xhr.abort();\n          }\n        };\n      });\n    }));\n  }\n  static #_ = this.ɵfac = function HttpXhrBackend_Factory(t) {\n    return new (t || HttpXhrBackend)(i0.ɵɵinject(i1.XhrFactory));\n  };\n  static #_2 = this.ɵprov = /* @__PURE__ */i0.ɵɵdefineInjectable({\n    token: HttpXhrBackend,\n    factory: HttpXhrBackend.ɵfac\n  });\n}\n(() => {\n  (typeof ngDevMode === \"undefined\" || ngDevMode) && i0.ɵsetClassMetadata(HttpXhrBackend, [{\n    type: Injectable\n  }], () => [{\n    type: i1.XhrFactory\n  }], null);\n})();\nconst XSRF_ENABLED = new InjectionToken(ngDevMode ? 'XSRF_ENABLED' : '');\nconst XSRF_DEFAULT_COOKIE_NAME = 'XSRF-TOKEN';\nconst XSRF_COOKIE_NAME = new InjectionToken(ngDevMode ? 'XSRF_COOKIE_NAME' : '', {\n  providedIn: 'root',\n  factory: () => XSRF_DEFAULT_COOKIE_NAME\n});\nconst XSRF_DEFAULT_HEADER_NAME = 'X-XSRF-TOKEN';\nconst XSRF_HEADER_NAME = new InjectionToken(ngDevMode ? 'XSRF_HEADER_NAME' : '', {\n  providedIn: 'root',\n  factory: () => XSRF_DEFAULT_HEADER_NAME\n});\n/**\n * Retrieves the current XSRF token to use with the next outgoing request.\n *\n * @publicApi\n */\nclass HttpXsrfTokenExtractor {}\n/**\n * `HttpXsrfTokenExtractor` which retrieves the token from a cookie.\n */\nclass HttpXsrfCookieExtractor {\n  constructor(doc, platform, cookieName) {\n    this.doc = doc;\n    this.platform = platform;\n    this.cookieName = cookieName;\n    this.lastCookieString = '';\n    this.lastToken = null;\n    /**\n     * @internal for testing\n     */\n    this.parseCount = 0;\n  }\n  getToken() {\n    if (this.platform === 'server') {\n      return null;\n    }\n    const cookieString = this.doc.cookie || '';\n    if (cookieString !== this.lastCookieString) {\n      this.parseCount++;\n      this.lastToken = ɵparseCookieValue(cookieString, this.cookieName);\n      this.lastCookieString = cookieString;\n    }\n    return this.lastToken;\n  }\n  static #_ = this.ɵfac = function HttpXsrfCookieExtractor_Factory(t) {\n    return new (t || HttpXsrfCookieExtractor)(i0.ɵɵinject(DOCUMENT), i0.ɵɵinject(PLATFORM_ID), i0.ɵɵinject(XSRF_COOKIE_NAME));\n  };\n  static #_2 = this.ɵprov = /* @__PURE__ */i0.ɵɵdefineInjectable({\n    token: HttpXsrfCookieExtractor,\n    factory: HttpXsrfCookieExtractor.ɵfac\n  });\n}\n(() => {\n  (typeof ngDevMode === \"undefined\" || ngDevMode) && i0.ɵsetClassMetadata(HttpXsrfCookieExtractor, [{\n    type: Injectable\n  }], () => [{\n    type: undefined,\n    decorators: [{\n      type: Inject,\n      args: [DOCUMENT]\n    }]\n  }, {\n    type: undefined,\n    decorators: [{\n      type: Inject,\n      args: [PLATFORM_ID]\n    }]\n  }, {\n    type: undefined,\n    decorators: [{\n      type: Inject,\n      args: [XSRF_COOKIE_NAME]\n    }]\n  }], null);\n})();\nfunction xsrfInterceptorFn(req, next) {\n  const lcUrl = req.url.toLowerCase();\n  // Skip both non-mutating requests and absolute URLs.\n  // Non-mutating requests don't require a token, and absolute URLs require special handling\n  // anyway as the cookie set\n  // on our origin is not the same as the token expected by another origin.\n  if (!inject(XSRF_ENABLED) || req.method === 'GET' || req.method === 'HEAD' || lcUrl.startsWith('http://') || lcUrl.startsWith('https://')) {\n    return next(req);\n  }\n  const token = inject(HttpXsrfTokenExtractor).getToken();\n  const headerName = inject(XSRF_HEADER_NAME);\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({\n      headers: req.headers.set(headerName, token)\n    });\n  }\n  return next(req);\n}\n/**\n * `HttpInterceptor` which adds an XSRF token to eligible outgoing requests.\n */\nclass HttpXsrfInterceptor {\n  constructor(injector) {\n    this.injector = injector;\n  }\n  intercept(initialRequest, next) {\n    return runInInjectionContext(this.injector, () => xsrfInterceptorFn(initialRequest, downstreamRequest => next.handle(downstreamRequest)));\n  }\n  static #_ = this.ɵfac = function HttpXsrfInterceptor_Factory(t) {\n    return new (t || HttpXsrfInterceptor)(i0.ɵɵinject(i0.EnvironmentInjector));\n  };\n  static #_2 = this.ɵprov = /* @__PURE__ */i0.ɵɵdefineInjectable({\n    token: HttpXsrfInterceptor,\n    factory: HttpXsrfInterceptor.ɵfac\n  });\n}\n(() => {\n  (typeof ngDevMode === \"undefined\" || ngDevMode) && i0.ɵsetClassMetadata(HttpXsrfInterceptor, [{\n    type: Injectable\n  }], () => [{\n    type: i0.EnvironmentInjector\n  }], null);\n})();\n\n/**\n * Identifies a particular kind of `HttpFeature`.\n *\n * @publicApi\n */\nvar HttpFeatureKind;\n(function (HttpFeatureKind) {\n  HttpFeatureKind[HttpFeatureKind[\"Interceptors\"] = 0] = \"Interceptors\";\n  HttpFeatureKind[HttpFeatureKind[\"LegacyInterceptors\"] = 1] = \"LegacyInterceptors\";\n  HttpFeatureKind[HttpFeatureKind[\"CustomXsrfConfiguration\"] = 2] = \"CustomXsrfConfiguration\";\n  HttpFeatureKind[HttpFeatureKind[\"NoXsrfProtection\"] = 3] = \"NoXsrfProtection\";\n  HttpFeatureKind[HttpFeatureKind[\"JsonpSupport\"] = 4] = \"JsonpSupport\";\n  HttpFeatureKind[HttpFeatureKind[\"RequestsMadeViaParent\"] = 5] = \"RequestsMadeViaParent\";\n  HttpFeatureKind[HttpFeatureKind[\"Fetch\"] = 6] = \"Fetch\";\n})(HttpFeatureKind || (HttpFeatureKind = {}));\nfunction makeHttpFeature(kind, providers) {\n  return {\n    ɵkind: kind,\n    ɵproviders: providers\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=\"alert is-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 * ```\n * provideHttpClient(withFetch());\n * ```\n *\n * </div>\n *\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 */\nfunction provideHttpClient(...features) {\n  if (ngDevMode) {\n    const featureKinds = new Set(features.map(f => f.ɵkind));\n    if (featureKinds.has(HttpFeatureKind.NoXsrfProtection) && featureKinds.has(HttpFeatureKind.CustomXsrfConfiguration)) {\n      throw new Error(ngDevMode ? `Configuration error: found both withXsrfConfiguration() and withNoXsrfProtection() in the same call to provideHttpClient(), which is a contradiction.` : '');\n    }\n  }\n  const providers = [HttpClient, HttpXhrBackend, HttpInterceptorHandler, {\n    provide: HttpHandler,\n    useExisting: HttpInterceptorHandler\n  }, {\n    provide: HttpBackend,\n    useExisting: HttpXhrBackend\n  }, {\n    provide: HTTP_INTERCEPTOR_FNS,\n    useValue: xsrfInterceptorFn,\n    multi: true\n  }, {\n    provide: XSRF_ENABLED,\n    useValue: true\n  }, {\n    provide: HttpXsrfTokenExtractor,\n    useClass: HttpXsrfCookieExtractor\n  }];\n  for (const feature of features) {\n    providers.push(...feature.ɵproviders);\n  }\n  return makeEnvironmentProviders(providers);\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 */\nfunction withInterceptors(interceptorFns) {\n  return makeHttpFeature(HttpFeatureKind.Interceptors, interceptorFns.map(interceptorFn => {\n    return {\n      provide: HTTP_INTERCEPTOR_FNS,\n      useValue: interceptorFn,\n      multi: true\n    };\n  }));\n}\nconst LEGACY_INTERCEPTOR_FN = new InjectionToken(ngDevMode ? 'LEGACY_INTERCEPTOR_FN' : '');\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 */\nfunction withInterceptorsFromDi() {\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    provide: LEGACY_INTERCEPTOR_FN,\n    useFactory: legacyInterceptorFnFactory\n  }, {\n    provide: HTTP_INTERCEPTOR_FNS,\n    useExisting: LEGACY_INTERCEPTOR_FN,\n    multi: true\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 */\nfunction withXsrfConfiguration({\n  cookieName,\n  headerName\n}) {\n  const providers = [];\n  if (cookieName !== undefined) {\n    providers.push({\n      provide: XSRF_COOKIE_NAME,\n      useValue: cookieName\n    });\n  }\n  if (headerName !== undefined) {\n    providers.push({\n      provide: XSRF_HEADER_NAME,\n      useValue: headerName\n    });\n  }\n  return makeHttpFeature(HttpFeatureKind.CustomXsrfConfiguration, providers);\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 */\nfunction withNoXsrfProtection() {\n  return makeHttpFeature(HttpFeatureKind.NoXsrfProtection, [{\n    provide: XSRF_ENABLED,\n    useValue: false\n  }]);\n}\n/**\n * Add JSONP support to the configuration of the current `HttpClient` instance.\n *\n * @see {@link provideHttpClient}\n */\nfunction withJsonpSupport() {\n  return makeHttpFeature(HttpFeatureKind.JsonpSupport, [JsonpClientBackend, {\n    provide: JsonpCallbackContext,\n    useFactory: jsonpCallbackContext\n  }, {\n    provide: HTTP_INTERCEPTOR_FNS,\n    useValue: jsonpInterceptorFn,\n    multi: true\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 {@link provideHttpClient}\n * @developerPreview\n */\nfunction withRequestsMadeViaParent() {\n  return makeHttpFeature(HttpFeatureKind.RequestsMadeViaParent, [{\n    provide: HttpBackend,\n    useFactory: () => {\n      const handlerFromParent = inject(HttpHandler, {\n        skipSelf: true,\n        optional: true\n      });\n      if (ngDevMode && handlerFromParent === null) {\n        throw new Error('withRequestsMadeViaParent() can only be used when the parent injector also configures HttpClient');\n      }\n      return handlerFromParent;\n    }\n  }]);\n}\n/**\n * Configures the current `HttpClient` instance to make requests using the fetch API.\n *\n * This `FetchBackend` requires the support of the Fetch API which is available on all evergreen\n * browsers and on NodeJS from v18 onward.\n *\n * Note: The Fetch API doesn't support progress report on uploads.\n *\n * @publicApi\n */\nfunction withFetch() {\n  if ((typeof ngDevMode === 'undefined' || ngDevMode) && typeof fetch !== 'function') {\n    // TODO: Create a runtime error\n    // TODO: Use ENVIRONMENT_INITIALIZER to contextualize the error message (browser or server)\n    throw new Error('The `withFetch` feature of HttpClient requires the `fetch` API to be available. ' + 'If you run the code in a Node environment, make sure you use Node v18.10 or later.');\n  }\n  return makeHttpFeature(HttpFeatureKind.Fetch, [FetchBackend, {\n    provide: HttpBackend,\n    useExisting: FetchBackend\n  }, {\n    provide: PRIMARY_HTTP_BACKEND,\n    useExisting: FetchBackend\n  }]);\n}\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 */\nclass HttpClientXsrfModule {\n  /**\n   * Disable the default XSRF protection.\n   */\n  static disable() {\n    return {\n      ngModule: HttpClientXsrfModule,\n      providers: [withNoXsrfProtection().ɵproviders]\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(options = {}) {\n    return {\n      ngModule: HttpClientXsrfModule,\n      providers: withXsrfConfiguration(options).ɵproviders\n    };\n  }\n  static #_ = this.ɵfac = function HttpClientXsrfModule_Factory(t) {\n    return new (t || HttpClientXsrfModule)();\n  };\n  static #_2 = this.ɵmod = /* @__PURE__ */i0.ɵɵdefineNgModule({\n    type: HttpClientXsrfModule\n  });\n  static #_3 = this.ɵinj = /* @__PURE__ */i0.ɵɵdefineInjector({\n    providers: [HttpXsrfInterceptor, {\n      provide: HTTP_INTERCEPTORS,\n      useExisting: HttpXsrfInterceptor,\n      multi: true\n    }, {\n      provide: HttpXsrfTokenExtractor,\n      useClass: HttpXsrfCookieExtractor\n    }, withXsrfConfiguration({\n      cookieName: XSRF_DEFAULT_COOKIE_NAME,\n      headerName: XSRF_DEFAULT_HEADER_NAME\n    }).ɵproviders, {\n      provide: XSRF_ENABLED,\n      useValue: true\n    }]\n  });\n}\n(() => {\n  (typeof ngDevMode === \"undefined\" || ngDevMode) && i0.ɵsetClassMetadata(HttpClientXsrfModule, [{\n    type: NgModule,\n    args: [{\n      providers: [HttpXsrfInterceptor, {\n        provide: HTTP_INTERCEPTORS,\n        useExisting: HttpXsrfInterceptor,\n        multi: true\n      }, {\n        provide: HttpXsrfTokenExtractor,\n        useClass: HttpXsrfCookieExtractor\n      }, withXsrfConfiguration({\n        cookieName: XSRF_DEFAULT_COOKIE_NAME,\n        headerName: XSRF_DEFAULT_HEADER_NAME\n      }).ɵproviders, {\n        provide: XSRF_ENABLED,\n        useValue: true\n      }]\n    }]\n  }], null, null);\n})();\n/**\n * Configures the [dependency injector](guide/glossary#injector) for `HttpClient`\n * with supporting services for XSRF. Automatically imported by `HttpClientModule`.\n *\n * You can add interceptors to the chain behind `HttpClient` by binding them to the\n * multiprovider for built-in [DI token](guide/glossary#di-token) `HTTP_INTERCEPTORS`.\n *\n * @publicApi\n */\nclass HttpClientModule {\n  static #_ = this.ɵfac = function HttpClientModule_Factory(t) {\n    return new (t || HttpClientModule)();\n  };\n  static #_2 = this.ɵmod = /* @__PURE__ */i0.ɵɵdefineNgModule({\n    type: HttpClientModule\n  });\n  static #_3 = this.ɵinj = /* @__PURE__ */i0.ɵɵdefineInjector({\n    providers: [provideHttpClient(withInterceptorsFromDi())]\n  });\n}\n(() => {\n  (typeof ngDevMode === \"undefined\" || ngDevMode) && i0.ɵsetClassMetadata(HttpClientModule, [{\n    type: NgModule,\n    args: [{\n      /**\n       * Configures the [dependency injector](guide/glossary#injector) where it is imported\n       * with supporting services for HTTP communications.\n       */\n      providers: [provideHttpClient(withInterceptorsFromDi())]\n    }]\n  }], null, null);\n})();\n/**\n * Configures the [dependency injector](guide/glossary#injector) for `HttpClient`\n * with supporting services for JSONP.\n * Without this module, Jsonp requests reach the backend\n * with method JSONP, where they are rejected.\n *\n * @publicApi\n */\nclass HttpClientJsonpModule {\n  static #_ = this.ɵfac = function HttpClientJsonpModule_Factory(t) {\n    return new (t || HttpClientJsonpModule)();\n  };\n  static #_2 = this.ɵmod = /* @__PURE__ */i0.ɵɵdefineNgModule({\n    type: HttpClientJsonpModule\n  });\n  static #_3 = this.ɵinj = /* @__PURE__ */i0.ɵɵdefineInjector({\n    providers: [withJsonpSupport().ɵproviders]\n  });\n}\n(() => {\n  (typeof ngDevMode === \"undefined\" || ngDevMode) && i0.ɵsetClassMetadata(HttpClientJsonpModule, [{\n    type: NgModule,\n    args: [{\n      providers: [withJsonpSupport().ɵproviders]\n    }]\n  }], null, null);\n})();\n\n/**\n * Keys within cached response data structure.\n */\nconst BODY = 'b';\nconst HEADERS = 'h';\nconst STATUS = 's';\nconst STATUS_TEXT = 'st';\nconst URL = 'u';\nconst RESPONSE_TYPE = 'rt';\nconst CACHE_OPTIONS = new InjectionToken(ngDevMode ? 'HTTP_TRANSFER_STATE_CACHE_OPTIONS' : '');\n/**\n * A list of allowed HTTP methods to cache.\n */\nconst ALLOWED_METHODS = ['GET', 'HEAD'];\nfunction transferCacheInterceptorFn(req, next) {\n  const {\n    isCacheActive,\n    ...globalOptions\n  } = inject(CACHE_OPTIONS);\n  const {\n    transferCache: requestOptions,\n    method: requestMethod\n  } = req;\n  // In the following situations we do not want to cache the request\n  if (!isCacheActive ||\n  // POST requests are allowed either globally or at request level\n  requestMethod === 'POST' && !globalOptions.includePostRequests && !requestOptions || requestMethod !== 'POST' && !ALLOWED_METHODS.includes(requestMethod) ||\n  // Do not cache request that require authorization\n  req.headers.has('authorization') || req.headers.has('proxy-authorization') || requestOptions === false || globalOptions.filter?.(req) === false) {\n    return next(req);\n  }\n  const transferState = inject(TransferState);\n  const storeKey = makeCacheKey(req);\n  const response = transferState.get(storeKey, null);\n  let headersToInclude = globalOptions.includeHeaders;\n  if (typeof requestOptions === 'object' && requestOptions.includeHeaders) {\n    // Request-specific config takes precedence over the global config.\n    headersToInclude = requestOptions.includeHeaders;\n  }\n  if (response) {\n    const {\n      [BODY]: undecodedBody,\n      [RESPONSE_TYPE]: responseType,\n      [HEADERS]: httpHeaders,\n      [STATUS]: status,\n      [STATUS_TEXT]: statusText,\n      [URL]: url\n    } = response;\n    // Request found in cache. Respond using it.\n    let body = undecodedBody;\n    switch (responseType) {\n      case 'arraybuffer':\n        body = new TextEncoder().encode(undecodedBody).buffer;\n        break;\n      case 'blob':\n        body = new Blob([undecodedBody]);\n        break;\n    }\n    // We want to warn users accessing a header provided from the cache\n    // That HttpTransferCache alters the headers\n    // The warning will be logged a single time by HttpHeaders instance\n    let headers = new HttpHeaders(httpHeaders);\n    if (typeof ngDevMode === 'undefined' || ngDevMode) {\n      // Append extra logic in dev mode to produce a warning when a header\n      // that was not transferred to the client is accessed in the code via `get`\n      // and `has` calls.\n      headers = appendMissingHeadersDetection(req.url, headers, headersToInclude ?? []);\n    }\n    return of(new HttpResponse({\n      body,\n      headers,\n      status,\n      statusText,\n      url\n    }));\n  }\n  // Request not found in cache. Make the request and cache it.\n  return next(req).pipe(tap(event => {\n    if (event instanceof HttpResponse) {\n      transferState.set(storeKey, {\n        [BODY]: event.body,\n        [HEADERS]: getFilteredHeaders(event.headers, headersToInclude),\n        [STATUS]: event.status,\n        [STATUS_TEXT]: event.statusText,\n        [URL]: event.url || '',\n        [RESPONSE_TYPE]: req.responseType\n      });\n    }\n  }));\n}\nfunction getFilteredHeaders(headers, includeHeaders) {\n  if (!includeHeaders) {\n    return {};\n  }\n  const headersMap = {};\n  for (const key of includeHeaders) {\n    const values = headers.getAll(key);\n    if (values !== null) {\n      headersMap[key] = values;\n    }\n  }\n  return headersMap;\n}\nfunction makeCacheKey(request) {\n  // make the params encoded same as a url so it's easy to identify\n  const {\n    params,\n    method,\n    responseType,\n    url,\n    body\n  } = request;\n  const encodedParams = params.keys().sort().map(k => `${k}=${params.getAll(k)}`).join('&');\n  const strBody = typeof body === 'string' ? body : '';\n  const key = [method, responseType, url, strBody, encodedParams].join('|');\n  const hash = generateHash(key);\n  return makeStateKey(hash);\n}\n/**\n * A method that returns a hash representation of a string using a variant of DJB2 hash\n * algorithm.\n *\n * This is the same hashing logic that is used to generate component ids.\n */\nfunction generateHash(value) {\n  let hash = 0;\n  for (const char of value) {\n    hash = Math.imul(31, hash) + char.charCodeAt(0) << 0;\n  }\n  // Force positive number hash.\n  // 2147483647 = equivalent of Integer.MAX_VALUE.\n  hash += 2147483647 + 1;\n  return hash.toString();\n}\n/**\n * Returns the DI providers needed to enable HTTP transfer cache.\n *\n * By default, when using server rendering, requests are performed twice: once on the server and\n * other one on the browser.\n *\n * When these providers are added, requests performed on the server are cached and reused during the\n * bootstrapping of the application in the browser thus avoiding duplicate requests and reducing\n * load time.\n *\n */\nfunction withHttpTransferCache(cacheOptions) {\n  return [{\n    provide: CACHE_OPTIONS,\n    useFactory: () => {\n      ɵperformanceMarkFeature('NgHttpTransferCache');\n      return {\n        isCacheActive: true,\n        ...cacheOptions\n      };\n    }\n  }, {\n    provide: HTTP_ROOT_INTERCEPTOR_FNS,\n    useValue: transferCacheInterceptorFn,\n    multi: true,\n    deps: [TransferState, CACHE_OPTIONS]\n  }, {\n    provide: APP_BOOTSTRAP_LISTENER,\n    multi: true,\n    useFactory: () => {\n      const appRef = inject(ApplicationRef);\n      const cacheState = inject(CACHE_OPTIONS);\n      return () => {\n        ɵwhenStable(appRef).then(() => {\n          cacheState.isCacheActive = false;\n        });\n      };\n    }\n  }];\n}\n/**\n * This function will add a proxy to an HttpHeader to intercept calls to get/has\n * and log a warning if the header entry requested has been removed\n */\nfunction appendMissingHeadersDetection(url, headers, headersToInclude) {\n  const warningProduced = new Set();\n  return new Proxy(headers, {\n    get(target, prop) {\n      const value = Reflect.get(target, prop);\n      const methods = new Set(['get', 'has', 'getAll']);\n      if (typeof value !== 'function' || !methods.has(prop)) {\n        return value;\n      }\n      return headerName => {\n        // We log when the key has been removed and a warning hasn't been produced for the header\n        const key = (prop + ':' + headerName).toLowerCase(); // e.g. `get:cache-control`\n        if (!headersToInclude.includes(headerName) && !warningProduced.has(key)) {\n          warningProduced.add(key);\n          const truncatedUrl = ɵtruncateMiddle(url);\n          // TODO: create Error guide for this warning\n          console.warn(ɵformatRuntimeError(2802 /* RuntimeErrorCode.HEADERS_ALTERED_BY_TRANSFER_CACHE */, `Angular detected that the \\`${headerName}\\` header is accessed, but the value of the header ` + `was not transferred from the server to the client by the HttpTransferCache. ` + `To include the value of the \\`${headerName}\\` header for the \\`${truncatedUrl}\\` request, ` + `use the \\`includeHeaders\\` list. The \\`includeHeaders\\` can be defined either ` + `on a request level by adding the \\`transferCache\\` parameter, or on an application ` + `level by adding the \\`httpCacheTransfer.includeHeaders\\` argument to the ` + `\\`provideClientHydration()\\` call. `));\n        }\n        // invoking the original method\n        return value.apply(target, [headerName]);\n      };\n    }\n  });\n}\n\n// This file is not used to build this module. It is only used during editing\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { FetchBackend, HTTP_INTERCEPTORS, HttpBackend, HttpClient, HttpClientJsonpModule, HttpClientModule, HttpClientXsrfModule, HttpContext, HttpContextToken, HttpErrorResponse, HttpEventType, HttpFeatureKind, HttpHandler, HttpHeaderResponse, HttpHeaders, HttpParams, HttpRequest, HttpResponse, HttpResponseBase, HttpStatusCode, HttpUrlEncodingCodec, HttpXhrBackend, HttpXsrfTokenExtractor, JsonpClientBackend, JsonpInterceptor, provideHttpClient, withFetch, withInterceptors, withInterceptorsFromDi, withJsonpSupport, withNoXsrfProtection, withRequestsMadeViaParent, withXsrfConfiguration, HTTP_ROOT_INTERCEPTOR_FNS as ɵHTTP_ROOT_INTERCEPTOR_FNS, HttpInterceptorHandler as ɵHttpInterceptingHandler, HttpInterceptorHandler as ɵHttpInterceptorHandler, PRIMARY_HTTP_BACKEND as ɵPRIMARY_HTTP_BACKEND, withHttpTransferCache as ɵwithHttpTransferCache 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Studio/WebUserManager/DigitalData.UserManager.NgWebUI/ClientApp/node_modules/@angular/common/fesm2022/http.mjs"],"sourcesContent":["/**\n * @license Angular v17.3.0\n * (c) 2010-2022 Google LLC. https://angular.io/\n * License: MIT\n */\n\nimport * as i0 from '@angular/core';\nimport { Injectable, inject, NgZone, runInInjectionContext, InjectionToken, ɵPendingTasks, PLATFORM_ID, ɵConsole, ɵformatRuntimeError, Inject, ɵRuntimeError, makeEnvironmentProviders, NgModule, TransferState, makeStateKey, ɵperformanceMarkFeature, APP_BOOTSTRAP_LISTENER, ApplicationRef, ɵwhenStable, ɵtruncateMiddle } from '@angular/core';\nimport { of, Observable, from } from 'rxjs';\nimport { concatMap, filter, map, finalize, switchMap, tap } from 'rxjs/operators';\nimport * as i1 from '@angular/common';\nimport { isPlatformServer, DOCUMENT, ɵparseCookieValue } from '@angular/common';\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 */\nclass HttpHandler {\n}\n/**\n * A final `HttpHandler` which will dispatch the request via browser HTTP APIs to a backend.\n *\n * Interceptors sit between the `HttpClient` interface and the `HttpBackend`.\n *\n * When injected, `HttpBackend` dispatches requests directly to the backend, without going\n * through the interceptor chain.\n *\n * @publicApi\n */\nclass HttpBackend {\n}\n\n/**\n * Represents the header configuration options for an HTTP request.\n * Instances are immutable. Modifying methods return a cloned\n * instance with the change. The original object is never changed.\n *\n * @publicApi\n */\nclass HttpHeaders {\n    /**  Constructs a new HTTP header object with the given values.*/\n    constructor(headers) {\n        /**\n         * Internal map of lowercased header names to the normalized\n         * form of the name (the form seen first).\n         */\n        this.normalizedNames = new Map();\n        /**\n         * Queued updates to be materialized the next initialization.\n         */\n        this.lazyUpdate = null;\n        if (!headers) {\n            this.headers = new Map();\n        }\n        else if (typeof headers === 'string') {\n            this.lazyInit = () => {\n                this.headers = new Map();\n                headers.split('\\n').forEach((line) => {\n                    const index = line.indexOf(':');\n                    if (index > 0) {\n                        const name = line.slice(0, index);\n                        const key = name.toLowerCase();\n                        const value = line.slice(index + 1).trim();\n                        this.maybeSetNormalizedName(name, key);\n                        if (this.headers.has(key)) {\n                            this.headers.get(key).push(value);\n                        }\n                        else {\n                            this.headers.set(key, [value]);\n                        }\n                    }\n                });\n            };\n        }\n        else if (typeof Headers !== 'undefined' && headers instanceof Headers) {\n            this.headers = new Map();\n            headers.forEach((values, name) => {\n                this.setHeaderEntries(name, values);\n            });\n        }\n        else {\n            this.lazyInit = () => {\n                if (typeof ngDevMode === 'undefined' || ngDevMode) {\n                    assertValidHeaders(headers);\n                }\n                this.headers = new Map();\n                Object.entries(headers).forEach(([name, values]) => {\n                    this.setHeaderEntries(name, values);\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) {\n        this.init();\n        return this.headers.has(name.toLowerCase());\n    }\n    /**\n     * Retrieves the first value of a given header.\n     *\n     * @param name The header name.\n     *\n     * @returns The value string if the header exists, null otherwise\n     */\n    get(name) {\n        this.init();\n        const values = this.headers.get(name.toLowerCase());\n        return values && values.length > 0 ? values[0] : null;\n    }\n    /**\n     * Retrieves the names of the headers.\n     *\n     * @returns A list of header names.\n     */\n    keys() {\n        this.init();\n        return Array.from(this.normalizedNames.values());\n    }\n    /**\n     * Retrieves a list of values for a given header.\n     *\n     * @param name The header name from which to retrieve values.\n     *\n     * @returns A string of values if the header exists, null otherwise.\n     */\n    getAll(name) {\n        this.init();\n        return this.headers.get(name.toLowerCase()) || null;\n    }\n    /**\n     * Appends a new value to the existing set of values for a header\n     * and returns them in a clone of the original instance.\n     *\n     * @param name The header name for which to append the values.\n     * @param value The value to append.\n     *\n     * @returns A clone of the HTTP headers object with the value appended to the given header.\n     */\n    append(name, value) {\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, value) {\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, value) {\n        return this.clone({ name, value, op: 'd' });\n    }\n    maybeSetNormalizedName(name, lcName) {\n        if (!this.normalizedNames.has(lcName)) {\n            this.normalizedNames.set(lcName, name);\n        }\n    }\n    init() {\n        if (!!this.lazyInit) {\n            if (this.lazyInit instanceof HttpHeaders) {\n                this.copyFrom(this.lazyInit);\n            }\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    copyFrom(other) {\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    clone(update) {\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    applyUpdate(update) {\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;\n                if (!toDelete) {\n                    this.headers.delete(key);\n                    this.normalizedNames.delete(key);\n                }\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                    }\n                    else {\n                        this.headers.set(key, existing);\n                    }\n                }\n                break;\n        }\n    }\n    setHeaderEntries(name, values) {\n        const headerValues = (Array.isArray(values) ? values : [values]).map((value) => value.toString());\n        const key = name.toLowerCase();\n        this.headers.set(key, headerValues);\n        this.maybeSetNormalizedName(name, key);\n    }\n    /**\n     * @internal\n     */\n    forEach(fn) {\n        this.init();\n        Array.from(this.normalizedNames.keys()).forEach((key) => fn(this.normalizedNames.get(key), this.headers.get(key)));\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(headers) {\n    for (const [key, value] of Object.entries(headers)) {\n        if (!(typeof value === 'string' || typeof value === 'number') && !Array.isArray(value)) {\n            throw new Error(`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 * 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 */\nclass HttpUrlEncodingCodec {\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) {\n        return standardEncoding(key);\n    }\n    /**\n     * Encodes the value of a URL parameter or query-string.\n     * @param value The value.\n     * @returns The encoded value.\n     */\n    encodeValue(value) {\n        return standardEncoding(value);\n    }\n    /**\n     * Decodes an encoded URL parameter or query-string key.\n     * @param key The encoded key name.\n     * @returns The decoded key name.\n     */\n    decodeKey(key) {\n        return decodeURIComponent(key);\n    }\n    /**\n     * Decodes an encoded URL parameter or query-string value.\n     * @param value The encoded value.\n     * @returns The decoded value.\n     */\n    decodeValue(value) {\n        return decodeURIComponent(value);\n    }\n}\nfunction paramParser(rawParams, codec) {\n    const map = new Map();\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 = rawParams.replace(/^\\?/, '').split('&');\n        params.forEach((param) => {\n            const eqIdx = param.indexOf('=');\n            const [key, val] = 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 * 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 = {\n    '40': '@',\n    '3A': ':',\n    '24': '$',\n    '2C': ',',\n    '3B': ';',\n    '3D': '=',\n    '3F': '?',\n    '2F': '/',\n};\nfunction standardEncoding(v) {\n    return encodeURIComponent(v).replace(STANDARD_ENCODING_REGEX, (s, t) => STANDARD_ENCODING_REPLACEMENTS[t] ?? s);\n}\nfunction valueToString(value) {\n    return `${value}`;\n}\n/**\n * An HTTP request/response body that represents serialized parameters,\n * per the MIME type `application/x-www-form-urlencoded`.\n *\n * This class is immutable; all mutation operations return a new instance.\n *\n * @publicApi\n */\nclass HttpParams {\n    constructor(options = {}) {\n        this.updates = null;\n        this.cloneFrom = null;\n        this.encoder = options.encoder || new HttpUrlEncodingCodec();\n        if (!!options.fromString) {\n            if (!!options.fromObject) {\n                throw new Error(`Cannot specify both fromString and fromObject.`);\n            }\n            this.map = paramParser(options.fromString, this.encoder);\n        }\n        else if (!!options.fromObject) {\n            this.map = new Map();\n            Object.keys(options.fromObject).forEach((key) => {\n                const value = options.fromObject[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        }\n        else {\n            this.map = null;\n        }\n    }\n    /**\n     * Reports whether the body includes one or more values for a given parameter.\n     * @param param The parameter name.\n     * @returns True if the parameter has one or more values,\n     * false if it has no value or is not present.\n     */\n    has(param) {\n        this.init();\n        return this.map.has(param);\n    }\n    /**\n     * Retrieves the first value for a parameter.\n     * @param param The parameter name.\n     * @returns The first value of the given parameter,\n     * or `null` if the parameter is not present.\n     */\n    get(param) {\n        this.init();\n        const res = this.map.get(param);\n        return !!res ? res[0] : null;\n    }\n    /**\n     * Retrieves all values for a  parameter.\n     * @param param The parameter name.\n     * @returns All values in a string array,\n     * or `null` if the parameter not present.\n     */\n    getAll(param) {\n        this.init();\n        return this.map.get(param) || null;\n    }\n    /**\n     * Retrieves all the parameters for this body.\n     * @returns The parameter names in a string array.\n     */\n    keys() {\n        this.init();\n        return Array.from(this.map.keys());\n    }\n    /**\n     * Appends a new value to existing values for a parameter.\n     * @param param The parameter name.\n     * @param value The new value to add.\n     * @return A new body with the appended value.\n     */\n    append(param, value) {\n        return this.clone({ param, value, op: 'a' });\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        const updates = [];\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            }\n            else {\n                updates.push({ param, value: value, op: 'a' });\n            }\n        });\n        return this.clone(updates);\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, value) {\n        return this.clone({ param, value, op: 's' });\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, value) {\n        return this.clone({ param, value, op: 'd' });\n    }\n    /**\n     * Serializes the body to an encoded string, where key-value pairs (separated by `=`) are\n     * separated by `&`s.\n     */\n    toString() {\n        this.init();\n        return (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    clone(update) {\n        const clone = new HttpParams({ encoder: this.encoder });\n        clone.cloneFrom = this.cloneFrom || this;\n        clone.updates = (this.updates || []).concat(update);\n        return clone;\n    }\n    init() {\n        if (this.map === null) {\n            this.map = new Map();\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                            }\n                            else {\n                                this.map.delete(update.param);\n                            }\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/**\n * A token used to manipulate and access values stored in `HttpContext`.\n *\n * @publicApi\n */\nclass HttpContextToken {\n    constructor(defaultValue) {\n        this.defaultValue = defaultValue;\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 * ```typescript\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 * @publicApi\n */\nclass HttpContext {\n    constructor() {\n        this.map = new Map();\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(token, value) {\n        this.map.set(token, value);\n        return this;\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(token) {\n        if (!this.map.has(token)) {\n            this.map.set(token, token.defaultValue());\n        }\n        return this.map.get(token);\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) {\n        this.map.delete(token);\n        return this;\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) {\n        return this.map.has(token);\n    }\n    /**\n     * @returns a list of tokens currently stored in the context.\n     */\n    keys() {\n        return this.map.keys();\n    }\n}\n\n/**\n * Determine whether the given HTTP method may include a body.\n */\nfunction mightHaveBody(method) {\n    switch (method) {\n        case 'DELETE':\n        case 'GET':\n        case 'HEAD':\n        case 'OPTIONS':\n        case 'JSONP':\n            return false;\n        default:\n            return true;\n    }\n}\n/**\n * Safely assert whether the given value is an ArrayBuffer.\n *\n * In some execution environments ArrayBuffer is not defined.\n */\nfunction isArrayBuffer(value) {\n    return typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer;\n}\n/**\n * Safely assert whether the given value is a Blob.\n *\n * In some execution environments Blob is not defined.\n */\nfunction isBlob(value) {\n    return typeof Blob !== 'undefined' && value instanceof Blob;\n}\n/**\n * Safely assert whether the given value is a FormData instance.\n *\n * In some execution environments FormData is not defined.\n */\nfunction isFormData(value) {\n    return typeof FormData !== 'undefined' && value instanceof FormData;\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) {\n    return typeof URLSearchParams !== 'undefined' && value instanceof URLSearchParams;\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 */\nclass HttpRequest {\n    constructor(method, url, third, fourth) {\n        this.url = url;\n        /**\n         * The request body, or `null` if one isn't set.\n         *\n         * Bodies are not enforced to be immutable, as they can include a reference to any\n         * user-defined data type. However, interceptors should take care to preserve\n         * idempotence by treating them as such.\n         */\n        this.body = null;\n        /**\n         * Whether this request should be made in a way that exposes progress events.\n         *\n         * Progress events are expensive (change detection runs on each event) and so\n         * they should only be requested if the consumer intends to monitor them.\n         *\n         * Note: The `FetchBackend` doesn't support progress report on uploads.\n         */\n        this.reportProgress = false;\n        /**\n         * Whether this request should be sent with outgoing credentials (cookies).\n         */\n        this.withCredentials = false;\n        /**\n         * The expected response type of the server.\n         *\n         * This is used to parse the response appropriately before returning it to\n         * the requestee.\n         */\n        this.responseType = 'json';\n        this.method = method.toUpperCase();\n        // Next, need to figure out which argument holds the HttpRequestInit\n        // options, if any.\n        let options;\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 : null;\n            options = fourth;\n        }\n        else {\n            // No body required, options are the third argument. The body stays null.\n            options = third;\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            // Override default response type of 'json' if one is provided.\n            if (!!options.responseType) {\n                this.responseType = options.responseType;\n            }\n            // Override headers if they're provided.\n            if (!!options.headers) {\n                this.headers = options.headers;\n            }\n            if (!!options.context) {\n                this.context = options.context;\n            }\n            if (!!options.params) {\n                this.params = options.params;\n            }\n            // We do want to assign transferCache even if it's falsy (false is valid value)\n            this.transferCache = options.transferCache;\n        }\n        // If no headers have been passed in, construct a new HttpHeaders instance.\n        this.headers ??= new HttpHeaders();\n        // If no context have been passed in, construct a new HttpContext instance.\n        this.context ??= new HttpContext();\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        }\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            }\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 = qIdx === -1 ? '?' : qIdx < url.length - 1 ? '&' : '';\n                this.urlWithParams = url + sep + params;\n            }\n        }\n    }\n    /**\n     * Transform the free-form body into a serialized format suitable for\n     * transmission to the server.\n     */\n    serializeBody() {\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 (isArrayBuffer(this.body) ||\n            isBlob(this.body) ||\n            isFormData(this.body) ||\n            isUrlSearchParams(this.body) ||\n            typeof this.body === 'string') {\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 (typeof this.body === 'object' ||\n            typeof this.body === 'boolean' ||\n            Array.isArray(this.body)) {\n            return JSON.stringify(this.body);\n        }\n        // Fall back on toString() for everything else.\n        return this.body.toString();\n    }\n    /**\n     * Examine the body and attempt to infer an appropriate MIME type\n     * for it.\n     *\n     * If no such type can be inferred, this method will return `null`.\n     */\n    detectContentTypeHeader() {\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/plain';\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 (typeof this.body === 'object' ||\n            typeof this.body === 'number' ||\n            typeof this.body === 'boolean') {\n            return 'application/json';\n        }\n        // No type could be inferred.\n        return null;\n    }\n    clone(update = {}) {\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        // 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        // Carefully handle the boolean options to differentiate between\n        // `false` and `undefined` in the update args.\n        const withCredentials = update.withCredentials !== undefined ? update.withCredentials : this.withCredentials;\n        const reportProgress = update.reportProgress !== undefined ? update.reportProgress : this.reportProgress;\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        // Pass on context if needed\n        const context = update.context ?? this.context;\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((headers, name) => headers.set(name, update.setHeaders[name]), headers);\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((params, param) => params.set(param, update.setParams[param]), params);\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        });\n    }\n}\n\n/**\n * Type enumeration for the different kinds of `HttpEvent`.\n *\n * @publicApi\n */\nvar HttpEventType;\n(function (HttpEventType) {\n    /**\n     * The request was sent out over the wire.\n     */\n    HttpEventType[HttpEventType[\"Sent\"] = 0] = \"Sent\";\n    /**\n     * An upload progress event was received.\n     *\n     * Note: The `FetchBackend` doesn't support progress report on uploads.\n     */\n    HttpEventType[HttpEventType[\"UploadProgress\"] = 1] = \"UploadProgress\";\n    /**\n     * The response status code and headers were received.\n     */\n    HttpEventType[HttpEventType[\"ResponseHeader\"] = 2] = \"ResponseHeader\";\n    /**\n     * A download progress event was received.\n     */\n    HttpEventType[HttpEventType[\"DownloadProgress\"] = 3] = \"DownloadProgress\";\n    /**\n     * The full response including the body was received.\n     */\n    HttpEventType[HttpEventType[\"Response\"] = 4] = \"Response\";\n    /**\n     * A custom event from an interceptor or a backend.\n     */\n    HttpEventType[HttpEventType[\"User\"] = 5] = \"User\";\n})(HttpEventType || (HttpEventType = {}));\n/**\n * Base class for both `HttpResponse` and `HttpHeaderResponse`.\n *\n * @publicApi\n */\nclass HttpResponseBase {\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(init, defaultStatus = HttpStatusCode.Ok, defaultStatusText = 'OK') {\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        // Cache the ok value to avoid defining a getter.\n        this.ok = this.status >= 200 && this.status < 300;\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 * @publicApi\n */\nclass HttpHeaderResponse extends HttpResponseBase {\n    /**\n     * Create a new `HttpHeaderResponse` with the given parameters.\n     */\n    constructor(init = {}) {\n        super(init);\n        this.type = HttpEventType.ResponseHeader;\n    }\n    /**\n     * Copy this `HttpHeaderResponse`, overriding its contents with the\n     * given parameter hash.\n     */\n    clone(update = {}) {\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 * A full HTTP response, including a typed response body (which may be `null`\n * if one was not returned).\n *\n * `HttpResponse` is a `HttpEvent` available on the response event\n * stream.\n *\n * @publicApi\n */\nclass HttpResponse extends HttpResponseBase {\n    /**\n     * Construct a new `HttpResponse`.\n     */\n    constructor(init = {}) {\n        super(init);\n        this.type = HttpEventType.Response;\n        this.body = init.body !== undefined ? init.body : null;\n    }\n    clone(update = {}) {\n        return new HttpResponse({\n            body: update.body !== undefined ? update.body : this.body,\n            headers: update.headers || this.headers,\n            status: update.status !== undefined ? update.status : this.status,\n            statusText: update.statusText || this.statusText,\n            url: update.url || this.url || undefined,\n        });\n    }\n}\n/**\n * A response that represents an error or failure, either from a\n * non-successful HTTP status, an error while executing the request,\n * or some other failure which occurred during the parsing of the response.\n *\n * Any error returned on the `Observable` response stream will be\n * wrapped in an `HttpErrorResponse` to provide additional context about\n * the state of the HTTP layer when the error occurred. The error property\n * will contain either a wrapped Error object or the error response returned\n * from the server.\n *\n * @publicApi\n */\nclass HttpErrorResponse extends HttpResponseBase {\n    constructor(init) {\n        // Initialize with a default status of 0 / Unknown Error.\n        super(init, 0, 'Unknown Error');\n        this.name = 'HttpErrorResponse';\n        /**\n         * Errors are never okay, even when the status code is in the 2xx success range.\n         */\n        this.ok = false;\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        }\n        else {\n            this.message = `Http failure response for ${init.url || '(unknown url)'}: ${init.status} ${init.statusText}`;\n        }\n        this.error = init.error || null;\n    }\n}\n/**\n * Http status codes.\n * As per https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml\n * @publicApi\n */\nvar HttpStatusCode;\n(function (HttpStatusCode) {\n    HttpStatusCode[HttpStatusCode[\"Continue\"] = 100] = \"Continue\";\n    HttpStatusCode[HttpStatusCode[\"SwitchingProtocols\"] = 101] = \"SwitchingProtocols\";\n    HttpStatusCode[HttpStatusCode[\"Processing\"] = 102] = \"Processing\";\n    HttpStatusCode[HttpStatusCode[\"EarlyHints\"] = 103] = \"EarlyHints\";\n    HttpStatusCode[HttpStatusCode[\"Ok\"] = 200] = \"Ok\";\n    HttpStatusCode[HttpStatusCode[\"Created\"] = 201] = \"Created\";\n    HttpStatusCode[HttpStatusCode[\"Accepted\"] = 202] = \"Accepted\";\n    HttpStatusCode[HttpStatusCode[\"NonAuthoritativeInformation\"] = 203] = \"NonAuthoritativeInformation\";\n    HttpStatusCode[HttpStatusCode[\"NoContent\"] = 204] = \"NoContent\";\n    HttpStatusCode[HttpStatusCode[\"ResetContent\"] = 205] = \"ResetContent\";\n    HttpStatusCode[HttpStatusCode[\"PartialContent\"] = 206] = \"PartialContent\";\n    HttpStatusCode[HttpStatusCode[\"MultiStatus\"] = 207] = \"MultiStatus\";\n    HttpStatusCode[HttpStatusCode[\"AlreadyReported\"] = 208] = \"AlreadyReported\";\n    HttpStatusCode[HttpStatusCode[\"ImUsed\"] = 226] = \"ImUsed\";\n    HttpStatusCode[HttpStatusCode[\"MultipleChoices\"] = 300] = \"MultipleChoices\";\n    HttpStatusCode[HttpStatusCode[\"MovedPermanently\"] = 301] = \"MovedPermanently\";\n    HttpStatusCode[HttpStatusCode[\"Found\"] = 302] = \"Found\";\n    HttpStatusCode[HttpStatusCode[\"SeeOther\"] = 303] = \"SeeOther\";\n    HttpStatusCode[HttpStatusCode[\"NotModified\"] = 304] = \"NotModified\";\n    HttpStatusCode[HttpStatusCode[\"UseProxy\"] = 305] = \"UseProxy\";\n    HttpStatusCode[HttpStatusCode[\"Unused\"] = 306] = \"Unused\";\n    HttpStatusCode[HttpStatusCode[\"TemporaryRedirect\"] = 307] = \"TemporaryRedirect\";\n    HttpStatusCode[HttpStatusCode[\"PermanentRedirect\"] = 308] = \"PermanentRedirect\";\n    HttpStatusCode[HttpStatusCode[\"BadRequest\"] = 400] = \"BadRequest\";\n    HttpStatusCode[HttpStatusCode[\"Unauthorized\"] = 401] = \"Unauthorized\";\n    HttpStatusCode[HttpStatusCode[\"PaymentRequired\"] = 402] = \"PaymentRequired\";\n    HttpStatusCode[HttpStatusCode[\"Forbidden\"] = 403] = \"Forbidden\";\n    HttpStatusCode[HttpStatusCode[\"NotFound\"] = 404] = \"NotFound\";\n    HttpStatusCode[HttpStatusCode[\"MethodNotAllowed\"] = 405] = \"MethodNotAllowed\";\n    HttpStatusCode[HttpStatusCode[\"NotAcceptable\"] = 406] = \"NotAcceptable\";\n    HttpStatusCode[HttpStatusCode[\"ProxyAuthenticationRequired\"] = 407] = \"ProxyAuthenticationRequired\";\n    HttpStatusCode[HttpStatusCode[\"RequestTimeout\"] = 408] = \"RequestTimeout\";\n    HttpStatusCode[HttpStatusCode[\"Conflict\"] = 409] = \"Conflict\";\n    HttpStatusCode[HttpStatusCode[\"Gone\"] = 410] = \"Gone\";\n    HttpStatusCode[HttpStatusCode[\"LengthRequired\"] = 411] = \"LengthRequired\";\n    HttpStatusCode[HttpStatusCode[\"PreconditionFailed\"] = 412] = \"PreconditionFailed\";\n    HttpStatusCode[HttpStatusCode[\"PayloadTooLarge\"] = 413] = \"PayloadTooLarge\";\n    HttpStatusCode[HttpStatusCode[\"UriTooLong\"] = 414] = \"UriTooLong\";\n    HttpStatusCode[HttpStatusCode[\"UnsupportedMediaType\"] = 415] = \"UnsupportedMediaType\";\n    HttpStatusCode[HttpStatusCode[\"RangeNotSatisfiable\"] = 416] = \"RangeNotSatisfiable\";\n    HttpStatusCode[HttpStatusCode[\"ExpectationFailed\"] = 417] = \"ExpectationFailed\";\n    HttpStatusCode[HttpStatusCode[\"ImATeapot\"] = 418] = \"ImATeapot\";\n    HttpStatusCode[HttpStatusCode[\"MisdirectedRequest\"] = 421] = \"MisdirectedRequest\";\n    HttpStatusCode[HttpStatusCode[\"UnprocessableEntity\"] = 422] = \"UnprocessableEntity\";\n    HttpStatusCode[HttpStatusCode[\"Locked\"] = 423] = \"Locked\";\n    HttpStatusCode[HttpStatusCode[\"FailedDependency\"] = 424] = \"FailedDependency\";\n    HttpStatusCode[HttpStatusCode[\"TooEarly\"] = 425] = \"TooEarly\";\n    HttpStatusCode[HttpStatusCode[\"UpgradeRequired\"] = 426] = \"UpgradeRequired\";\n    HttpStatusCode[HttpStatusCode[\"PreconditionRequired\"] = 428] = \"PreconditionRequired\";\n    HttpStatusCode[HttpStatusCode[\"TooManyRequests\"] = 429] = \"TooManyRequests\";\n    HttpStatusCode[HttpStatusCode[\"RequestHeaderFieldsTooLarge\"] = 431] = \"RequestHeaderFieldsTooLarge\";\n    HttpStatusCode[HttpStatusCode[\"UnavailableForLegalReasons\"] = 451] = \"UnavailableForLegalReasons\";\n    HttpStatusCode[HttpStatusCode[\"InternalServerError\"] = 500] = \"InternalServerError\";\n    HttpStatusCode[HttpStatusCode[\"NotImplemented\"] = 501] = \"NotImplemented\";\n    HttpStatusCode[HttpStatusCode[\"BadGateway\"] = 502] = \"BadGateway\";\n    HttpStatusCode[HttpStatusCode[\"ServiceUnavailable\"] = 503] = \"ServiceUnavailable\";\n    HttpStatusCode[HttpStatusCode[\"GatewayTimeout\"] = 504] = \"GatewayTimeout\";\n    HttpStatusCode[HttpStatusCode[\"HttpVersionNotSupported\"] = 505] = \"HttpVersionNotSupported\";\n    HttpStatusCode[HttpStatusCode[\"VariantAlsoNegotiates\"] = 506] = \"VariantAlsoNegotiates\";\n    HttpStatusCode[HttpStatusCode[\"InsufficientStorage\"] = 507] = \"InsufficientStorage\";\n    HttpStatusCode[HttpStatusCode[\"LoopDetected\"] = 508] = \"LoopDetected\";\n    HttpStatusCode[HttpStatusCode[\"NotExtended\"] = 510] = \"NotExtended\";\n    HttpStatusCode[HttpStatusCode[\"NetworkAuthenticationRequired\"] = 511] = \"NetworkAuthenticationRequired\";\n})(HttpStatusCode || (HttpStatusCode = {}));\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(options, body) {\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        transferCache: options.transferCache,\n    };\n}\n/**\n * Performs HTTP requests.\n * This service is available as an injectable class, with methods to perform HTTP requests.\n * Each request method has multiple signatures, and the return type varies based on\n * the signature that is called (mainly the values of `observe` and `responseType`).\n *\n * Note that the `responseType` *options* value is a String that identifies the\n * single data type of the response.\n * A single overload version of the method handles each response type.\n * The value of `responseType` cannot be a union, as the combined signature could imply.\n\n *\n * @usageNotes\n * Sample HTTP requests for the [Tour of Heroes](/tutorial/tour-of-heroes/toh-pt0) application.\n *\n * ### HTTP Request Example\n *\n * ```\n *  // GET heroes whose name contains search term\n * searchHeroes(term: string): observable<Hero[]>{\n *\n *  const params = new HttpParams({fromString: 'name=term'});\n *    return this.httpClient.request('GET', this.heroesUrl, {responseType:'json', params});\n * }\n * ```\n *\n * Alternatively, the parameter string can be used without invoking HttpParams\n * by directly joining to the URL.\n * ```\n * this.httpClient.request('GET', this.heroesUrl + '?' + 'name=term', {responseType:'json'});\n * ```\n *\n *\n * ### JSONP Example\n * ```\n * requestJsonp(url, callback = 'callback') {\n *  return this.httpClient.jsonp(this.heroesURL, callback);\n * }\n * ```\n *\n * ### PATCH Example\n * ```\n * // PATCH one of the heroes' name\n * patchHero (id: number, heroName: string): Observable<{}> {\n * const url = `${this.heroesUrl}/${id}`;   // PATCH api/heroes/42\n *  return this.httpClient.patch(url, {name: heroName}, httpOptions)\n *    .pipe(catchError(this.handleError('patchHero')));\n * }\n * ```\n *\n * @see [HTTP Guide](guide/understanding-communicating-with-http)\n * @see [HTTP Request](api/common/http/HttpRequest)\n *\n * @publicApi\n */\nclass HttpClient {\n    constructor(handler) {\n        this.handler = handler;\n    }\n    /**\n     * Constructs an observable for a generic HTTP request that, when subscribed,\n     * fires the request through the chain of registered interceptors and on to the\n     * server.\n     *\n     * You can pass an `HttpRequest` directly as the only parameter. In this case,\n     * the call returns an observable of the raw `HttpEvent` stream.\n     *\n     * Alternatively you can pass an HTTP method as the first parameter,\n     * a URL string as the second, and an options hash containing the request body as the third.\n     * See `addBody()`. In this case, the specified `responseType` and `observe` options determine the\n     * type of returned observable.\n     *   * The `responseType` value determines how a successful response body is parsed.\n     *   * If `responseType` is the default `json`, you can pass a type interface for the resulting\n     * object as a type parameter to the call.\n     *\n     * The `observe` value determines the return type, according to what you are interested in\n     * observing.\n     *   * An `observe` value of events returns an observable of the raw `HttpEvent` stream, including\n     * progress events by default.\n     *   * An `observe` value of response returns an observable of `HttpResponse<T>`,\n     * where the `T` parameter depends on the `responseType` and any optionally provided type\n     * parameter.\n     *   * An `observe` value of body returns an observable of `<T>` with the same `T` body type.\n     *\n     */\n    request(first, url, options = {}) {\n        let req;\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        }\n        else {\n            // It's a string, so it represents a URL. Construct a request based on it,\n            // and incorporate the remaining arguments (assuming `GET` unless a method is\n            // provided.\n            // Figure out the headers.\n            let headers = undefined;\n            if (options.headers instanceof HttpHeaders) {\n                headers = options.headers;\n            }\n            else {\n                headers = new HttpHeaders(options.headers);\n            }\n            // Sort out parameters.\n            let params = undefined;\n            if (!!options.params) {\n                if (options.params instanceof HttpParams) {\n                    params = options.params;\n                }\n                else {\n                    params = new HttpParams({ fromObject: options.params });\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            });\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$ = of(req).pipe(concatMap((req) => this.handler.handle(req)));\n        // If coming via the API signature which accepts a previously constructed HttpRequest,\n        // the only option is to get the event stream. Otherwise, return the event stream if\n        // that is what was requested.\n        if (first instanceof HttpRequest || options.observe === 'events') {\n            return events$;\n        }\n        // The requested stream contains either the full response or the body. In either\n        // case, the first step is to filter the event stream to extract a stream of\n        // responses(s).\n        const res$ = (events$.pipe(filter((event) => event instanceof HttpResponse)));\n        // Decide which stream to return.\n        switch (options.observe || 'body') {\n            case 'body':\n                // The requested stream is the body. Map the response stream to the response\n                // body. This could be done more simply, but a misbehaving interceptor might\n                // transform the response body into a different format and ignore the requested\n                // responseType. Guard against this by validating that the response is of the\n                // requested type.\n                switch (req.responseType) {\n                    case 'arraybuffer':\n                        return res$.pipe(map((res) => {\n                            // Validate that the body is an ArrayBuffer.\n                            if (res.body !== null && !(res.body instanceof ArrayBuffer)) {\n                                throw new Error('Response is not an ArrayBuffer.');\n                            }\n                            return res.body;\n                        }));\n                    case 'blob':\n                        return res$.pipe(map((res) => {\n                            // Validate that the body is a Blob.\n                            if (res.body !== null && !(res.body instanceof Blob)) {\n                                throw new Error('Response is not a Blob.');\n                            }\n                            return res.body;\n                        }));\n                    case 'text':\n                        return res$.pipe(map((res) => {\n                            // Validate that the body is a string.\n                            if (res.body !== null && typeof res.body !== 'string') {\n                                throw new Error('Response is not a string.');\n                            }\n                            return res.body;\n                        }));\n                    case 'json':\n                    default:\n                        // No validation needed for JSON responses, as they can be of any type.\n                        return res$.pipe(map((res) => res.body));\n                }\n            case 'response':\n                // The response stream was requested directly, so return it.\n                return res$;\n            default:\n                // Guard against new future observe types being added.\n                throw new Error(`Unreachable: unhandled observe type ${options.observe}}`);\n        }\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `DELETE` request to execute on the server. See the individual overloads for\n     * details on the return type.\n     *\n     * @param url     The endpoint URL.\n     * @param options The HTTP options to send with the request.\n     *\n     */\n    delete(url, options = {}) {\n        return this.request('DELETE', url, options);\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `GET` request to execute on the server. See the individual overloads for\n     * details on the return type.\n     */\n    get(url, options = {}) {\n        return this.request('GET', url, options);\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `HEAD` request to execute on the server. The `HEAD` method returns\n     * meta information about the resource without transferring the\n     * resource itself. See the individual overloads for\n     * details on the return type.\n     */\n    head(url, options = {}) {\n        return this.request('HEAD', url, options);\n    }\n    /**\n     * Constructs an `Observable` that, when subscribed, causes a request with the special method\n     * `JSONP` to be dispatched via the interceptor pipeline.\n     * The [JSONP pattern](https://en.wikipedia.org/wiki/JSONP) works around limitations of certain\n     * API endpoints that don't support newer,\n     * and preferable [CORS](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS) protocol.\n     * JSONP treats the endpoint API as a JavaScript file and tricks the browser to process the\n     * requests even if the API endpoint is not located on the same domain (origin) as the client-side\n     * application making the request.\n     * The endpoint API must support JSONP callback for JSONP requests to work.\n     * The resource API returns the JSON response wrapped in a callback function.\n     * You can pass the callback function name as one of the query parameters.\n     * Note that JSONP requests can only be used with `GET` requests.\n     *\n     * @param url The resource URL.\n     * @param callbackParam The callback function name.\n     *\n     */\n    jsonp(url, callbackParam) {\n        return this.request('JSONP', url, {\n            params: new HttpParams().append(callbackParam, 'JSONP_CALLBACK'),\n            observe: 'body',\n            responseType: 'json',\n        });\n    }\n    /**\n     * Constructs an `Observable` that, when subscribed, causes the configured\n     * `OPTIONS` request to execute on the server. This method allows the client\n     * to determine the supported HTTP methods and other capabilities of an endpoint,\n     * without implying a resource action. See the individual overloads for\n     * details on the return type.\n     */\n    options(url, options = {}) {\n        return this.request('OPTIONS', url, options);\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `PATCH` request to execute on the server. See the individual overloads for\n     * details on the return type.\n     */\n    patch(url, body, options = {}) {\n        return this.request('PATCH', url, addBody(options, body));\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `POST` request to execute on the server. The server responds with the location of\n     * the replaced resource. See the individual overloads for\n     * details on the return type.\n     */\n    post(url, body, options = {}) {\n        return this.request('POST', url, addBody(options, body));\n    }\n    /**\n     * Constructs an observable that, when subscribed, causes the configured\n     * `PUT` request to execute on the server. The `PUT` method replaces an existing resource\n     * with a new set of values.\n     * See the individual overloads for details on the return type.\n     */\n    put(url, body, options = {}) {\n        return this.request('PUT', url, addBody(options, body));\n    }\n    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpClient, deps: [{ token: HttpHandler }], target: i0.ɵɵFactoryTarget.Injectable }); }\n    static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpClient }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpClient, decorators: [{\n            type: Injectable\n        }], ctorParameters: () => [{ type: HttpHandler }] });\n\nconst XSSI_PREFIX$1 = /^\\)\\]\\}',?\\n/;\nconst REQUEST_URL_HEADER = `X-Request-URL`;\n/**\n * Determine an appropriate URL for the response, by checking either\n * response url or the X-Request-URL header.\n */\nfunction getResponseUrl$1(response) {\n    if (response.url) {\n        return response.url;\n    }\n    // stored as lowercase in the map\n    const xRequestUrl = REQUEST_URL_HEADER.toLocaleLowerCase();\n    return response.headers.get(xRequestUrl);\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 */\nclass FetchBackend {\n    constructor() {\n        // We need to bind the native fetch to its context or it will throw an \"illegal invocation\"\n        this.fetchImpl = inject(FetchFactory, { optional: true })?.fetch ?? fetch.bind(globalThis);\n        this.ngZone = inject(NgZone);\n    }\n    handle(request) {\n        return new Observable((observer) => {\n            const aborter = new AbortController();\n            this.doRequest(request, aborter.signal, observer).then(noop, (error) => observer.error(new HttpErrorResponse({ error })));\n            return () => aborter.abort();\n        });\n    }\n    async doRequest(request, signal, observer) {\n        const init = this.createRequestInit(request);\n        let response;\n        try {\n            const fetchPromise = this.fetchImpl(request.urlWithParams, { signal, ...init });\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            // Send the `Sent` event before awaiting the response.\n            observer.next({ type: HttpEventType.Sent });\n            response = await fetchPromise;\n        }\n        catch (error) {\n            observer.error(new HttpErrorResponse({\n                error,\n                status: error.status ?? 0,\n                statusText: error.statusText,\n                url: request.urlWithParams,\n                headers: error.headers,\n            }));\n            return;\n        }\n        const headers = new HttpHeaders(response.headers);\n        const statusText = response.statusText;\n        const url = getResponseUrl$1(response) ?? request.urlWithParams;\n        let status = response.status;\n        let body = null;\n        if (request.reportProgress) {\n            observer.next(new HttpHeaderResponse({ headers, status, statusText, url }));\n        }\n        if (response.body) {\n            // Read Progress\n            const contentLength = response.headers.get('content-length');\n            const chunks = [];\n            const reader = response.body.getReader();\n            let receivedLength = 0;\n            let decoder;\n            let partialText;\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            // 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                    const { done, value } = await reader.read();\n                    if (done) {\n                        break;\n                    }\n                    chunks.push(value);\n                    receivedLength += value.length;\n                    if (request.reportProgress) {\n                        partialText =\n                            request.responseType === 'text'\n                                ? (partialText ?? '') +\n                                    (decoder ??= new TextDecoder()).decode(value, { stream: true })\n                                : undefined;\n                        const reportProgress = () => observer.next({\n                            type: HttpEventType.DownloadProgress,\n                            total: contentLength ? +contentLength : undefined,\n                            loaded: receivedLength,\n                            partialText,\n                        });\n                        reqZone ? reqZone.run(reportProgress) : reportProgress();\n                    }\n                }\n            });\n            // Combine all chunks.\n            const chunksAll = this.concatChunks(chunks, receivedLength);\n            try {\n                const contentType = response.headers.get('Content-Type') ?? '';\n                body = this.parseBody(request, chunksAll, contentType);\n            }\n            catch (error) {\n                // Body loading or parsing failed\n                observer.error(new HttpErrorResponse({\n                    error,\n                    headers: new HttpHeaders(response.headers),\n                    status: response.status,\n                    statusText: response.statusText,\n                    url: getResponseUrl$1(response) ?? request.urlWithParams,\n                }));\n                return;\n            }\n        }\n        // Same behavior as the XhrBackend\n        if (status === 0) {\n            status = body ? HttpStatusCode.Ok : 0;\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        if (ok) {\n            observer.next(new HttpResponse({\n                body,\n                headers,\n                status,\n                statusText,\n                url,\n            }));\n            // The full body has been received and delivered, no further events\n            // are possible. This request is complete.\n            observer.complete();\n        }\n        else {\n            observer.error(new HttpErrorResponse({\n                error: body,\n                headers,\n                status,\n                statusText,\n                url,\n            }));\n        }\n    }\n    parseBody(request, binContent, contentType) {\n        switch (request.responseType) {\n            case 'json':\n                // stripping the XSSI when present\n                const text = new TextDecoder().decode(binContent).replace(XSSI_PREFIX$1, '');\n                return text === '' ? null : JSON.parse(text);\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    createRequestInit(req) {\n        // We could share some of this logic with the XhrBackend\n        const headers = {};\n        const credentials = req.withCredentials ? 'include' : undefined;\n        // Setting all the requested headers.\n        req.headers.forEach((name, values) => (headers[name] = values.join(',')));\n        // Add an Accept header if one isn't present already.\n        headers['Accept'] ??= 'application/json, text/plain, */*';\n        // Auto-detect the Content-Type header if one isn't present already.\n        if (!headers['Content-Type']) {\n            const detectedType = req.detectContentTypeHeader();\n            // Sometimes Content-Type detection fails.\n            if (detectedType !== null) {\n                headers['Content-Type'] = detectedType;\n            }\n        }\n        return {\n            body: req.serializeBody(),\n            method: req.method,\n            headers,\n            credentials,\n        };\n    }\n    concatChunks(chunks, totalLength) {\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        return chunksAll;\n    }\n    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: FetchBackend, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }\n    static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: FetchBackend }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: FetchBackend, decorators: [{\n            type: Injectable\n        }] });\n/**\n * Abstract class to provide a mocked implementation of `fetch()`\n */\nclass FetchFactory {\n}\nfunction noop() { }\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) {\n    promise.then(noop, noop);\n}\n\nfunction interceptorChainEndFn(req, finalHandlerFn) {\n    return finalHandlerFn(req);\n}\n/**\n * Constructs a `ChainedInterceptorFn` which adapts a legacy `HttpInterceptor` to the\n * `ChainedInterceptorFn` interface.\n */\nfunction adaptLegacyInterceptorToChain(chainTailFn, interceptor) {\n    return (initialRequest, finalHandlerFn) => interceptor.intercept(initialRequest, {\n        handle: (downstreamRequest) => chainTailFn(downstreamRequest, finalHandlerFn),\n    });\n}\n/**\n * Constructs a `ChainedInterceptorFn` which wraps and invokes a functional interceptor in the given\n * injector.\n */\nfunction chainedInterceptorFn(chainTailFn, interceptorFn, injector) {\n    // clang-format off\n    return (initialRequest, finalHandlerFn) => runInInjectionContext(injector, () => interceptorFn(initialRequest, (downstreamRequest) => chainTailFn(downstreamRequest, finalHandlerFn)));\n    // clang-format on\n}\n/**\n * A multi-provider token that represents the array of registered\n * `HttpInterceptor` objects.\n *\n * @publicApi\n */\nconst HTTP_INTERCEPTORS = new InjectionToken(ngDevMode ? 'HTTP_INTERCEPTORS' : '');\n/**\n * A multi-provided token of `HttpInterceptorFn`s.\n */\nconst HTTP_INTERCEPTOR_FNS = new InjectionToken(ngDevMode ? 'HTTP_INTERCEPTOR_FNS' : '');\n/**\n * A multi-provided token of `HttpInterceptorFn`s that are only set in root.\n */\nconst HTTP_ROOT_INTERCEPTOR_FNS = new InjectionToken(ngDevMode ? 'HTTP_ROOT_INTERCEPTOR_FNS' : '');\n/**\n * A provider to set a global primary http backend. If set, it will override the default one\n */\nconst PRIMARY_HTTP_BACKEND = new InjectionToken(ngDevMode ? 'PRIMARY_HTTP_BACKEND' : '');\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 */\nfunction legacyInterceptorFnFactory() {\n    let chain = null;\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(adaptLegacyInterceptorToChain, interceptorChainEndFn);\n        }\n        const pendingTasks = inject(ɵPendingTasks);\n        const taskId = pendingTasks.add();\n        return chain(req, handler).pipe(finalize(() => pendingTasks.remove(taskId)));\n    };\n}\nlet fetchBackendWarningDisplayed = false;\n/** Internal function to reset the flag in tests */\nfunction resetFetchBackendWarningFlag() {\n    fetchBackendWarningDisplayed = false;\n}\nclass HttpInterceptorHandler extends HttpHandler {\n    constructor(backend, injector) {\n        super();\n        this.backend = backend;\n        this.injector = injector;\n        this.chain = null;\n        this.pendingTasks = inject(ɵPendingTasks);\n        // Check if there is a preferred HTTP backend configured and use it if that's the case.\n        // This is needed to enable `FetchBackend` globally for all HttpClient's when `withFetch`\n        // is used.\n        const primaryHttpBackend = inject(PRIMARY_HTTP_BACKEND, { optional: true });\n        this.backend = primaryHttpBackend ?? backend;\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            const isServer = isPlatformServer(injector.get(PLATFORM_ID));\n            if (isServer && !(this.backend instanceof FetchBackend)) {\n                fetchBackendWarningDisplayed = true;\n                injector\n                    .get(ɵConsole)\n                    .warn(ɵformatRuntimeError(2801 /* RuntimeErrorCode.NOT_USING_FETCH_BACKEND_IN_SSR */, '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    handle(initialRequest) {\n        if (this.chain === null) {\n            const dedupedInterceptorFns = Array.from(new Set([\n                ...this.injector.get(HTTP_INTERCEPTOR_FNS),\n                ...this.injector.get(HTTP_ROOT_INTERCEPTOR_FNS, []),\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((nextSequencedFn, interceptorFn) => chainedInterceptorFn(nextSequencedFn, interceptorFn, this.injector), interceptorChainEndFn);\n        }\n        const taskId = this.pendingTasks.add();\n        return this.chain(initialRequest, (downstreamRequest) => this.backend.handle(downstreamRequest)).pipe(finalize(() => this.pendingTasks.remove(taskId)));\n    }\n    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpInterceptorHandler, deps: [{ token: HttpBackend }, { token: i0.EnvironmentInjector }], target: i0.ɵɵFactoryTarget.Injectable }); }\n    static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpInterceptorHandler }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpInterceptorHandler, decorators: [{\n            type: Injectable\n        }], ctorParameters: () => [{ type: HttpBackend }, { type: i0.EnvironmentInjector }] });\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 = 0;\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;\n// Error text given when a JSONP script is injected, but doesn't invoke the callback\n// passed in its URL.\nconst JSONP_ERR_NO_CALLBACK = 'JSONP injected script did not invoke callback.';\n// Error text given when a request is passed to the JsonpClientBackend that doesn't\n// have a request method JSONP.\nconst JSONP_ERR_WRONG_METHOD = 'JSONP requests must use JSONP request method.';\nconst JSONP_ERR_WRONG_RESPONSE_TYPE = 'JSONP requests must use Json response type.';\n// Error text given when a request is passed to the JsonpClientBackend that has\n// headers set\nconst JSONP_ERR_HEADERS_NOT_SUPPORTED = 'JSONP requests do not support headers.';\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 */\nclass JsonpCallbackContext {\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 */\nfunction jsonpCallbackContext() {\n    if (typeof window === 'object') {\n        return window;\n    }\n    return {};\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 */\nclass JsonpClientBackend {\n    constructor(callbackMap, document) {\n        this.callbackMap = callbackMap;\n        this.document = document;\n        /**\n         * A resolved promise that can be used to schedule microtasks in the event handlers.\n         */\n        this.resolvedPromise = Promise.resolve();\n    }\n    /**\n     * Get the name of the next callback method, by incrementing the global `nextRequestId`.\n     */\n    nextCallback() {\n        return `ng_jsonp_callback_${nextRequestId++}`;\n    }\n    /**\n     * Processes a JSONP request and returns an event stream of the results.\n     * @param req The request object.\n     * @returns An observable of the response events.\n     *\n     */\n    handle(req) {\n        // Firstly, check both the method and response type. If either doesn't match\n        // then the request was improperly routed here and cannot be handled.\n        if (req.method !== 'JSONP') {\n            throw new Error(JSONP_ERR_WRONG_METHOD);\n        }\n        else if (req.responseType !== 'json') {\n            throw new Error(JSONP_ERR_WRONG_RESPONSE_TYPE);\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 Error(JSONP_ERR_HEADERS_NOT_SUPPORTED);\n        }\n        // Everything else happens inside the Observable boundary.\n        return new Observable((observer) => {\n            // The first step to make a request is to generate the callback name, and replace the\n            // callback placeholder in the URL with the name. Care has to be taken here to ensure\n            // a trailing &, if matched, gets inserted back into the URL in the correct place.\n            const callback = this.nextCallback();\n            const url = req.urlWithParams.replace(/=JSONP_CALLBACK(&|$)/, `=${callback}$1`);\n            // Construct the <script> tag and point it at the URL.\n            const node = this.document.createElement('script');\n            node.src = url;\n            // A JSONP request requires waiting for multiple callbacks. These variables\n            // are closed over and track state across those callbacks.\n            // The response object, if one has been received, or null otherwise.\n            let body = null;\n            // Whether the response callback has been called.\n            let finished = false;\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) => {\n                // Data has been received from the JSONP script. Firstly, delete this callback.\n                delete this.callbackMap[callback];\n                // Set state to indicate data was received.\n                body = data;\n                finished = true;\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                // Remove the <script> tag if it's still on the page.\n                if (node.parentNode) {\n                    node.parentNode.removeChild(node);\n                }\n                // Remove the response callback from the callbackMap (window object in the\n                // browser).\n                delete this.callbackMap[callback];\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 = (event) => {\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                    // 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(new HttpErrorResponse({\n                            url,\n                            status: 0,\n                            statusText: 'JSONP Error',\n                            error: new Error(JSONP_ERR_NO_CALLBACK),\n                        }));\n                        return;\n                    }\n                    // Success. body either contains the response body or null if none was\n                    // returned.\n                    observer.next(new HttpResponse({\n                        body,\n                        status: HttpStatusCode.Ok,\n                        statusText: 'OK',\n                        url,\n                    }));\n                    // Complete the stream, the response is over.\n                    observer.complete();\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) => {\n                cleanup();\n                // Wrap the error in a HttpErrorResponse.\n                observer.error(new HttpErrorResponse({\n                    error,\n                    status: 0,\n                    statusText: 'JSONP Error',\n                    url,\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            // The request has now been successfully sent.\n            observer.next({ type: HttpEventType.Sent });\n            // Cancellation handler.\n            return () => {\n                if (!finished) {\n                    this.removeListeners(node);\n                }\n                // And finally, clean up the page.\n                cleanup();\n            };\n        });\n    }\n    removeListeners(script) {\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.createHTMLDocument();\n        foreignDocument.adoptNode(script);\n    }\n    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: JsonpClientBackend, deps: [{ token: JsonpCallbackContext }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable }); }\n    static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: JsonpClientBackend }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: JsonpClientBackend, decorators: [{\n            type: Injectable\n        }], ctorParameters: () => [{ type: JsonpCallbackContext }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }] });\n/**\n * Identifies requests with the method JSONP and shifts them to the `JsonpClientBackend`.\n */\nfunction jsonpInterceptorFn(req, next) {\n    if (req.method === 'JSONP') {\n        return inject(JsonpClientBackend).handle(req);\n    }\n    // Fall through for normal HTTP requests.\n    return next(req);\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 */\nclass JsonpInterceptor {\n    constructor(injector) {\n        this.injector = injector;\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, next) {\n        return runInInjectionContext(this.injector, () => jsonpInterceptorFn(initialRequest, (downstreamRequest) => next.handle(downstreamRequest)));\n    }\n    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: JsonpInterceptor, deps: [{ token: i0.EnvironmentInjector }], target: i0.ɵɵFactoryTarget.Injectable }); }\n    static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: JsonpInterceptor }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: JsonpInterceptor, decorators: [{\n            type: Injectable\n        }], ctorParameters: () => [{ type: i0.EnvironmentInjector }] });\n\nconst XSSI_PREFIX = /^\\)\\]\\}',?\\n/;\n/**\n * Determine an appropriate URL for the response, by checking either\n * XMLHttpRequest.responseURL or the X-Request-URL header.\n */\nfunction getResponseUrl(xhr) {\n    if ('responseURL' in xhr && xhr.responseURL) {\n        return xhr.responseURL;\n    }\n    if (/^X-Request-URL:/m.test(xhr.getAllResponseHeaders())) {\n        return xhr.getResponseHeader('X-Request-URL');\n    }\n    return null;\n}\n/**\n * Uses `XMLHttpRequest` to send requests to a backend server.\n * @see {@link HttpHandler}\n * @see {@link JsonpClientBackend}\n *\n * @publicApi\n */\nclass HttpXhrBackend {\n    constructor(xhrFactory) {\n        this.xhrFactory = xhrFactory;\n    }\n    /**\n     * Processes a request and returns a stream of response events.\n     * @param req The request object.\n     * @returns An observable of the response events.\n     */\n    handle(req) {\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 ɵRuntimeError(-2800 /* RuntimeErrorCode.MISSING_JSONP_MODULE */, (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        // 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 = this.xhrFactory;\n        const source = xhrFactory.ɵloadImpl\n            ? from(xhrFactory.ɵloadImpl())\n            : of(null);\n        return source.pipe(switchMap(() => {\n            // Everything happens on Observable subscription.\n            return new Observable((observer) => {\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                // Add all the requested headers.\n                req.headers.forEach((name, values) => xhr.setRequestHeader(name, values.join(',')));\n                // Add an Accept header if one isn't present already.\n                if (!req.headers.has('Accept')) {\n                    xhr.setRequestHeader('Accept', 'application/json, text/plain, */*');\n                }\n                // Auto-detect the Content-Type header if one isn't present already.\n                if (!req.headers.has('Content-Type')) {\n                    const detectedType = req.detectContentTypeHeader();\n                    // Sometimes Content-Type detection fails.\n                    if (detectedType !== null) {\n                        xhr.setRequestHeader('Content-Type', detectedType);\n                    }\n                }\n                // Set the responseType if one was requested.\n                if (req.responseType) {\n                    const responseType = req.responseType.toLowerCase();\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');\n                }\n                // Serialize the request body if one is present. If not, this will be set to null.\n                const reqBody = req.serializeBody();\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 = null;\n                // partialFromXhr extracts the HttpHeaderResponse from the current XMLHttpRequest\n                // state, and memoizes it into headerResponse.\n                const partialFromXhr = () => {\n                    if (headerResponse !== null) {\n                        return headerResponse;\n                    }\n                    const statusText = xhr.statusText || 'OK';\n                    // Parse headers from XMLHttpRequest - this step is lazy.\n                    const headers = new HttpHeaders(xhr.getAllResponseHeaders());\n                    // Read the response URL from the XMLHttpResponse instance and fall back on the\n                    // request URL.\n                    const url = getResponseUrl(xhr) || req.url;\n                    // Construct the HttpHeaderResponse and memoize it.\n                    headerResponse = new HttpHeaderResponse({ headers, status: xhr.status, statusText, url });\n                    return headerResponse;\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                // First up is the load event, which represents a response being fully available.\n                const onLoad = () => {\n                    // Read response state from the memoized partial data.\n                    let { headers, status, statusText, url } = partialFromXhr();\n                    // The body will be read out if present.\n                    let body = null;\n                    if (status !== HttpStatusCode.NoContent) {\n                        // Use XMLHttpRequest.response if set, responseText otherwise.\n                        body = typeof xhr.response === 'undefined' ? xhr.responseText : xhr.response;\n                    }\n                    // Normalize another potential bug (this one comes from CORS).\n                    if (status === 0) {\n                        status = !!body ? HttpStatusCode.Ok : 0;\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                    // 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                        }\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                            // 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 };\n                            }\n                        }\n                    }\n                    if (ok) {\n                        // A successful response is delivered on the event stream.\n                        observer.next(new HttpResponse({\n                            body,\n                            headers,\n                            status,\n                            statusText,\n                            url: url || undefined,\n                        }));\n                        // The full body has been received and delivered, no further events\n                        // are possible. This request is complete.\n                        observer.complete();\n                    }\n                    else {\n                        // An unsuccessful request is delivered on the error channel.\n                        observer.error(new HttpErrorResponse({\n                            // The error in this case is the response body (error from the server).\n                            error: body,\n                            headers,\n                            status,\n                            statusText,\n                            url: url || undefined,\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 = (error) => {\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                // 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                // The download progress event handler, which is only registered if\n                // progress events are enabled.\n                const onDownProgress = (event) => {\n                    // Send the HttpResponseHeaders event if it hasn't been sent already.\n                    if (!sentHeaders) {\n                        observer.next(partialFromXhr());\n                        sentHeaders = true;\n                    }\n                    // Start building the download progress event to deliver on the response\n                    // event stream.\n                    let progressEvent = {\n                        type: HttpEventType.DownloadProgress,\n                        loaded: event.loaded,\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                    // 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                    // Finally, fire the event.\n                    observer.next(progressEvent);\n                };\n                // The upload progress event handler, which is only registered if\n                // progress events are enabled.\n                const onUpProgress = (event) => {\n                    // Upload progress events are simpler. Begin building the progress\n                    // event.\n                    let progress = {\n                        type: HttpEventType.UploadProgress,\n                        loaded: event.loaded,\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                    // Send the event.\n                    observer.next(progress);\n                };\n                // By default, register for load and error events.\n                xhr.addEventListener('load', onLoad);\n                xhr.addEventListener('error', onError);\n                xhr.addEventListener('timeout', onError);\n                xhr.addEventListener('abort', onError);\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                    // 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                // 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', onError);\n                    if (req.reportProgress) {\n                        xhr.removeEventListener('progress', onDownProgress);\n                        if (reqBody !== null && xhr.upload) {\n                            xhr.upload.removeEventListener('progress', onUpProgress);\n                        }\n                    }\n                    // Finally, abort the in-flight request.\n                    if (xhr.readyState !== xhr.DONE) {\n                        xhr.abort();\n                    }\n                };\n            });\n        }));\n    }\n    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpXhrBackend, deps: [{ token: i1.XhrFactory }], target: i0.ɵɵFactoryTarget.Injectable }); }\n    static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpXhrBackend }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpXhrBackend, decorators: [{\n            type: Injectable\n        }], ctorParameters: () => [{ type: i1.XhrFactory }] });\n\nconst XSRF_ENABLED = new InjectionToken(ngDevMode ? 'XSRF_ENABLED' : '');\nconst XSRF_DEFAULT_COOKIE_NAME = 'XSRF-TOKEN';\nconst XSRF_COOKIE_NAME = new InjectionToken(ngDevMode ? 'XSRF_COOKIE_NAME' : '', {\n    providedIn: 'root',\n    factory: () => XSRF_DEFAULT_COOKIE_NAME,\n});\nconst XSRF_DEFAULT_HEADER_NAME = 'X-XSRF-TOKEN';\nconst XSRF_HEADER_NAME = new InjectionToken(ngDevMode ? 'XSRF_HEADER_NAME' : '', {\n    providedIn: 'root',\n    factory: () => XSRF_DEFAULT_HEADER_NAME,\n});\n/**\n * Retrieves the current XSRF token to use with the next outgoing request.\n *\n * @publicApi\n */\nclass HttpXsrfTokenExtractor {\n}\n/**\n * `HttpXsrfTokenExtractor` which retrieves the token from a cookie.\n */\nclass HttpXsrfCookieExtractor {\n    constructor(doc, platform, cookieName) {\n        this.doc = doc;\n        this.platform = platform;\n        this.cookieName = cookieName;\n        this.lastCookieString = '';\n        this.lastToken = null;\n        /**\n         * @internal for testing\n         */\n        this.parseCount = 0;\n    }\n    getToken() {\n        if (this.platform === 'server') {\n            return null;\n        }\n        const cookieString = this.doc.cookie || '';\n        if (cookieString !== this.lastCookieString) {\n            this.parseCount++;\n            this.lastToken = ɵparseCookieValue(cookieString, this.cookieName);\n            this.lastCookieString = cookieString;\n        }\n        return this.lastToken;\n    }\n    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpXsrfCookieExtractor, deps: [{ token: DOCUMENT }, { token: PLATFORM_ID }, { token: XSRF_COOKIE_NAME }], target: i0.ɵɵFactoryTarget.Injectable }); }\n    static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpXsrfCookieExtractor }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpXsrfCookieExtractor, decorators: [{\n            type: Injectable\n        }], ctorParameters: () => [{ type: undefined, decorators: [{\n                    type: Inject,\n                    args: [DOCUMENT]\n                }] }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [PLATFORM_ID]\n                }] }, { type: undefined, decorators: [{\n                    type: Inject,\n                    args: [XSRF_COOKIE_NAME]\n                }] }] });\nfunction xsrfInterceptorFn(req, next) {\n    const lcUrl = req.url.toLowerCase();\n    // Skip both non-mutating requests and absolute URLs.\n    // Non-mutating requests don't require a token, and absolute URLs require special handling\n    // anyway as the cookie set\n    // on our origin is not the same as the token expected by another origin.\n    if (!inject(XSRF_ENABLED) ||\n        req.method === 'GET' ||\n        req.method === 'HEAD' ||\n        lcUrl.startsWith('http://') ||\n        lcUrl.startsWith('https://')) {\n        return next(req);\n    }\n    const token = inject(HttpXsrfTokenExtractor).getToken();\n    const headerName = inject(XSRF_HEADER_NAME);\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 * `HttpInterceptor` which adds an XSRF token to eligible outgoing requests.\n */\nclass HttpXsrfInterceptor {\n    constructor(injector) {\n        this.injector = injector;\n    }\n    intercept(initialRequest, next) {\n        return runInInjectionContext(this.injector, () => xsrfInterceptorFn(initialRequest, (downstreamRequest) => next.handle(downstreamRequest)));\n    }\n    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpXsrfInterceptor, deps: [{ token: i0.EnvironmentInjector }], target: i0.ɵɵFactoryTarget.Injectable }); }\n    static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpXsrfInterceptor }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpXsrfInterceptor, decorators: [{\n            type: Injectable\n        }], ctorParameters: () => [{ type: i0.EnvironmentInjector }] });\n\n/**\n * Identifies a particular kind of `HttpFeature`.\n *\n * @publicApi\n */\nvar HttpFeatureKind;\n(function (HttpFeatureKind) {\n    HttpFeatureKind[HttpFeatureKind[\"Interceptors\"] = 0] = \"Interceptors\";\n    HttpFeatureKind[HttpFeatureKind[\"LegacyInterceptors\"] = 1] = \"LegacyInterceptors\";\n    HttpFeatureKind[HttpFeatureKind[\"CustomXsrfConfiguration\"] = 2] = \"CustomXsrfConfiguration\";\n    HttpFeatureKind[HttpFeatureKind[\"NoXsrfProtection\"] = 3] = \"NoXsrfProtection\";\n    HttpFeatureKind[HttpFeatureKind[\"JsonpSupport\"] = 4] = \"JsonpSupport\";\n    HttpFeatureKind[HttpFeatureKind[\"RequestsMadeViaParent\"] = 5] = \"RequestsMadeViaParent\";\n    HttpFeatureKind[HttpFeatureKind[\"Fetch\"] = 6] = \"Fetch\";\n})(HttpFeatureKind || (HttpFeatureKind = {}));\nfunction makeHttpFeature(kind, providers) {\n    return {\n        ɵkind: kind,\n        ɵproviders: providers,\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=\"alert is-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 * ```\n * provideHttpClient(withFetch());\n * ```\n *\n * </div>\n *\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 */\nfunction provideHttpClient(...features) {\n    if (ngDevMode) {\n        const featureKinds = new Set(features.map((f) => f.ɵkind));\n        if (featureKinds.has(HttpFeatureKind.NoXsrfProtection) &&\n            featureKinds.has(HttpFeatureKind.CustomXsrfConfiguration)) {\n            throw new Error(ngDevMode\n                ? `Configuration error: found both withXsrfConfiguration() and withNoXsrfProtection() in the same call to provideHttpClient(), which is a contradiction.`\n                : '');\n        }\n    }\n    const providers = [\n        HttpClient,\n        HttpXhrBackend,\n        HttpInterceptorHandler,\n        { provide: HttpHandler, useExisting: HttpInterceptorHandler },\n        { provide: HttpBackend, useExisting: HttpXhrBackend },\n        {\n            provide: HTTP_INTERCEPTOR_FNS,\n            useValue: xsrfInterceptorFn,\n            multi: true,\n        },\n        { provide: XSRF_ENABLED, useValue: true },\n        { provide: HttpXsrfTokenExtractor, useClass: HttpXsrfCookieExtractor },\n    ];\n    for (const feature of features) {\n        providers.push(...feature.ɵproviders);\n    }\n    return makeEnvironmentProviders(providers);\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 */\nfunction withInterceptors(interceptorFns) {\n    return makeHttpFeature(HttpFeatureKind.Interceptors, interceptorFns.map((interceptorFn) => {\n        return {\n            provide: HTTP_INTERCEPTOR_FNS,\n            useValue: interceptorFn,\n            multi: true,\n        };\n    }));\n}\nconst LEGACY_INTERCEPTOR_FN = new InjectionToken(ngDevMode ? 'LEGACY_INTERCEPTOR_FN' : '');\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 */\nfunction withInterceptorsFromDi() {\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 * 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 */\nfunction withXsrfConfiguration({ cookieName, headerName, }) {\n    const providers = [];\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    return makeHttpFeature(HttpFeatureKind.CustomXsrfConfiguration, providers);\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 */\nfunction withNoXsrfProtection() {\n    return makeHttpFeature(HttpFeatureKind.NoXsrfProtection, [\n        {\n            provide: XSRF_ENABLED,\n            useValue: false,\n        },\n    ]);\n}\n/**\n * Add JSONP support to the configuration of the current `HttpClient` instance.\n *\n * @see {@link provideHttpClient}\n */\nfunction withJsonpSupport() {\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 * 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 {@link provideHttpClient}\n * @developerPreview\n */\nfunction withRequestsMadeViaParent() {\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('withRequestsMadeViaParent() can only be used when the parent injector also configures HttpClient');\n                }\n                return handlerFromParent;\n            },\n        },\n    ]);\n}\n/**\n * Configures the current `HttpClient` instance to make requests using the fetch API.\n *\n * This `FetchBackend` requires the support of the Fetch API which is available on all evergreen\n * browsers and on NodeJS from v18 onward.\n *\n * Note: The Fetch API doesn't support progress report on uploads.\n *\n * @publicApi\n */\nfunction withFetch() {\n    if ((typeof ngDevMode === 'undefined' || ngDevMode) && typeof fetch !== 'function') {\n        // TODO: Create a runtime error\n        // TODO: Use ENVIRONMENT_INITIALIZER to contextualize the error message (browser or server)\n        throw new Error('The `withFetch` feature of HttpClient requires the `fetch` API to be available. ' +\n            'If you run the code in a Node environment, make sure you use Node v18.10 or later.');\n    }\n    return makeHttpFeature(HttpFeatureKind.Fetch, [\n        FetchBackend,\n        { provide: HttpBackend, useExisting: FetchBackend },\n        { provide: PRIMARY_HTTP_BACKEND, useExisting: FetchBackend },\n    ]);\n}\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 */\nclass HttpClientXsrfModule {\n    /**\n     * Disable the default XSRF protection.\n     */\n    static disable() {\n        return {\n            ngModule: HttpClientXsrfModule,\n            providers: [withNoXsrfProtection().ɵproviders],\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(options = {}) {\n        return {\n            ngModule: HttpClientXsrfModule,\n            providers: withXsrfConfiguration(options).ɵproviders,\n        };\n    }\n    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpClientXsrfModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule }); }\n    static { this.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpClientXsrfModule }); }\n    static { this.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpClientXsrfModule, 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}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpClientXsrfModule, decorators: [{\n            type: NgModule,\n            args: [{\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                }]\n        }] });\n/**\n * Configures the [dependency injector](guide/glossary#injector) for `HttpClient`\n * with supporting services for XSRF. Automatically imported by `HttpClientModule`.\n *\n * You can add interceptors to the chain behind `HttpClient` by binding them to the\n * multiprovider for built-in [DI token](guide/glossary#di-token) `HTTP_INTERCEPTORS`.\n *\n * @publicApi\n */\nclass HttpClientModule {\n    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpClientModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule }); }\n    static { this.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpClientModule }); }\n    static { this.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpClientModule, providers: [provideHttpClient(withInterceptorsFromDi())] }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpClientModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    /**\n                     * Configures the [dependency injector](guide/glossary#injector) where it is imported\n                     * with supporting services for HTTP communications.\n                     */\n                    providers: [provideHttpClient(withInterceptorsFromDi())],\n                }]\n        }] });\n/**\n * Configures the [dependency injector](guide/glossary#injector) for `HttpClient`\n * with supporting services for JSONP.\n * Without this module, Jsonp requests reach the backend\n * with method JSONP, where they are rejected.\n *\n * @publicApi\n */\nclass HttpClientJsonpModule {\n    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpClientJsonpModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule }); }\n    static { this.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: \"14.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpClientJsonpModule }); }\n    static { this.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpClientJsonpModule, providers: [withJsonpSupport().ɵproviders] }); }\n}\ni0.ɵɵngDeclareClassMetadata({ minVersion: \"12.0.0\", version: \"17.3.0\", ngImport: i0, type: HttpClientJsonpModule, decorators: [{\n            type: NgModule,\n            args: [{\n                    providers: [withJsonpSupport().ɵproviders],\n                }]\n        }] });\n\n/**\n * Keys within cached response data structure.\n */\nconst BODY = 'b';\nconst HEADERS = 'h';\nconst STATUS = 's';\nconst STATUS_TEXT = 'st';\nconst URL = 'u';\nconst RESPONSE_TYPE = 'rt';\nconst CACHE_OPTIONS = new InjectionToken(ngDevMode ? 'HTTP_TRANSFER_STATE_CACHE_OPTIONS' : '');\n/**\n * A list of allowed HTTP methods to cache.\n */\nconst ALLOWED_METHODS = ['GET', 'HEAD'];\nfunction transferCacheInterceptorFn(req, next) {\n    const { isCacheActive, ...globalOptions } = inject(CACHE_OPTIONS);\n    const { transferCache: requestOptions, method: requestMethod } = req;\n    // In the following situations we do not want to cache the request\n    if (!isCacheActive ||\n        // POST requests are allowed either globally or at request level\n        (requestMethod === 'POST' && !globalOptions.includePostRequests && !requestOptions) ||\n        (requestMethod !== 'POST' && !ALLOWED_METHODS.includes(requestMethod)) ||\n        // Do not cache request that require authorization\n        req.headers.has('authorization') ||\n        req.headers.has('proxy-authorization') ||\n        requestOptions === false ||\n        globalOptions.filter?.(req) === false) {\n        return next(req);\n    }\n    const transferState = inject(TransferState);\n    const storeKey = makeCacheKey(req);\n    const response = transferState.get(storeKey, null);\n    let headersToInclude = globalOptions.includeHeaders;\n    if (typeof requestOptions === 'object' && requestOptions.includeHeaders) {\n        // Request-specific config takes precedence over the global config.\n        headersToInclude = requestOptions.includeHeaders;\n    }\n    if (response) {\n        const { [BODY]: undecodedBody, [RESPONSE_TYPE]: responseType, [HEADERS]: httpHeaders, [STATUS]: status, [STATUS_TEXT]: statusText, [URL]: url, } = response;\n        // Request found in cache. Respond using it.\n        let body = undecodedBody;\n        switch (responseType) {\n            case 'arraybuffer':\n                body = new TextEncoder().encode(undecodedBody).buffer;\n                break;\n            case 'blob':\n                body = new Blob([undecodedBody]);\n                break;\n        }\n        // We want to warn users accessing a header provided from the cache\n        // That HttpTransferCache alters the headers\n        // The warning will be logged a single time by HttpHeaders instance\n        let headers = new HttpHeaders(httpHeaders);\n        if (typeof ngDevMode === 'undefined' || ngDevMode) {\n            // Append extra logic in dev mode to produce a warning when a header\n            // that was not transferred to the client is accessed in the code via `get`\n            // and `has` calls.\n            headers = appendMissingHeadersDetection(req.url, headers, headersToInclude ?? []);\n        }\n        return of(new HttpResponse({\n            body,\n            headers,\n            status,\n            statusText,\n            url,\n        }));\n    }\n    // Request not found in cache. Make the request and cache it.\n    return next(req).pipe(tap((event) => {\n        if (event instanceof HttpResponse) {\n            transferState.set(storeKey, {\n                [BODY]: event.body,\n                [HEADERS]: getFilteredHeaders(event.headers, headersToInclude),\n                [STATUS]: event.status,\n                [STATUS_TEXT]: event.statusText,\n                [URL]: event.url || '',\n                [RESPONSE_TYPE]: req.responseType,\n            });\n        }\n    }));\n}\nfunction getFilteredHeaders(headers, includeHeaders) {\n    if (!includeHeaders) {\n        return {};\n    }\n    const headersMap = {};\n    for (const key of includeHeaders) {\n        const values = headers.getAll(key);\n        if (values !== null) {\n            headersMap[key] = values;\n        }\n    }\n    return headersMap;\n}\nfunction makeCacheKey(request) {\n    // make the params encoded same as a url so it's easy to identify\n    const { params, method, responseType, url, body } = request;\n    const encodedParams = params\n        .keys()\n        .sort()\n        .map((k) => `${k}=${params.getAll(k)}`)\n        .join('&');\n    const strBody = typeof body === 'string' ? body : '';\n    const key = [method, responseType, url, strBody, encodedParams].join('|');\n    const hash = generateHash(key);\n    return makeStateKey(hash);\n}\n/**\n * A method that returns a hash representation of a string using a variant of DJB2 hash\n * algorithm.\n *\n * This is the same hashing logic that is used to generate component ids.\n */\nfunction generateHash(value) {\n    let hash = 0;\n    for (const char of value) {\n        hash = (Math.imul(31, hash) + char.charCodeAt(0)) << 0;\n    }\n    // Force positive number hash.\n    // 2147483647 = equivalent of Integer.MAX_VALUE.\n    hash += 2147483647 + 1;\n    return hash.toString();\n}\n/**\n * Returns the DI providers needed to enable HTTP transfer cache.\n *\n * By default, when using server rendering, requests are performed twice: once on the server and\n * other one on the browser.\n *\n * When these providers are added, requests performed on the server are cached and reused during the\n * bootstrapping of the application in the browser thus avoiding duplicate requests and reducing\n * load time.\n *\n */\nfunction withHttpTransferCache(cacheOptions) {\n    return [\n        {\n            provide: CACHE_OPTIONS,\n            useFactory: () => {\n                ɵperformanceMarkFeature('NgHttpTransferCache');\n                return { isCacheActive: true, ...cacheOptions };\n            },\n        },\n        {\n            provide: HTTP_ROOT_INTERCEPTOR_FNS,\n            useValue: transferCacheInterceptorFn,\n            multi: true,\n            deps: [TransferState, CACHE_OPTIONS],\n        },\n        {\n            provide: APP_BOOTSTRAP_LISTENER,\n            multi: true,\n            useFactory: () => {\n                const appRef = inject(ApplicationRef);\n                const cacheState = inject(CACHE_OPTIONS);\n                return () => {\n                    ɵwhenStable(appRef).then(() => {\n                        cacheState.isCacheActive = false;\n                    });\n                };\n            },\n        },\n    ];\n}\n/**\n * This function will add a proxy to an HttpHeader to intercept calls to get/has\n * and log a warning if the header entry requested has been removed\n */\nfunction appendMissingHeadersDetection(url, headers, headersToInclude) {\n    const warningProduced = new Set();\n    return new Proxy(headers, {\n        get(target, prop) {\n            const value = Reflect.get(target, prop);\n            const methods = new Set(['get', 'has', 'getAll']);\n            if (typeof value !== 'function' || !methods.has(prop)) {\n                return value;\n            }\n            return (headerName) => {\n                // We log when the key has been removed and a warning hasn't been produced for the header\n                const key = (prop + ':' + headerName).toLowerCase(); // e.g. `get:cache-control`\n                if (!headersToInclude.includes(headerName) && !warningProduced.has(key)) {\n                    warningProduced.add(key);\n                    const truncatedUrl = ɵtruncateMiddle(url);\n                    // TODO: create Error guide for this warning\n                    console.warn(ɵformatRuntimeError(2802 /* RuntimeErrorCode.HEADERS_ALTERED_BY_TRANSFER_CACHE */, `Angular detected that the \\`${headerName}\\` header is accessed, but the value of the header ` +\n                        `was not transferred from the server to the client by the HttpTransferCache. ` +\n                        `To include the value of the \\`${headerName}\\` header for the \\`${truncatedUrl}\\` request, ` +\n                        `use the \\`includeHeaders\\` list. The \\`includeHeaders\\` can be defined either ` +\n                        `on a request level by adding the \\`transferCache\\` parameter, or on an application ` +\n                        `level by adding the \\`httpCacheTransfer.includeHeaders\\` argument to the ` +\n                        `\\`provideClientHydration()\\` call. `));\n                }\n                // invoking the original method\n                return value.apply(target, [headerName]);\n            };\n        },\n    });\n}\n\n// This file is not used to build this module. It is only used during editing\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { FetchBackend, HTTP_INTERCEPTORS, HttpBackend, HttpClient, HttpClientJsonpModule, HttpClientModule, HttpClientXsrfModule, HttpContext, HttpContextToken, HttpErrorResponse, HttpEventType, HttpFeatureKind, HttpHandler, HttpHeaderResponse, HttpHeaders, HttpParams, HttpRequest, HttpResponse, HttpResponseBase, HttpStatusCode, HttpUrlEncodingCodec, HttpXhrBackend, HttpXsrfTokenExtractor, JsonpClientBackend, JsonpInterceptor, provideHttpClient, withFetch, withInterceptors, withInterceptorsFromDi, withJsonpSupport, withNoXsrfProtection, withRequestsMadeViaParent, withXsrfConfiguration, HTTP_ROOT_INTERCEPTOR_FNS as ɵHTTP_ROOT_INTERCEPTOR_FNS, HttpInterceptorHandler as ɵHttpInterceptingHandler, HttpInterceptorHandler as ɵHttpInterceptorHandler, PRIMARY_HTTP_BACKEND as ɵPRIMARY_HTTP_BACKEND, withHttpTransferCache as ɵwithHttpTransferCache 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