/* esm-bundle - @angular/common/http@15.2.9 - Ivy - es format - es2020 - Use of this source code is governed by an MIT-style license that can be found in the LICENSE file at https://angular.io/license */
import * as i1 from '@angular/common';
import { DOCUMENT, ɵparseCookieValue, XhrFactory as XhrFactory$1 } from '@angular/common';
import * as i0 from '@angular/core';
import { Injectable, InjectionToken, Inject, PLATFORM_ID, NgModule, makeEnvironmentProviders, inject } from '@angular/core';
import { of, Observable } from 'rxjs';
import { concatMap, filter, map } from 'rxjs/operators';

/**
 * @license Angular v15.2.9
 * (c) 2010-2022 Google LLC. https://angular.io/
 * License: MIT
 */

/**
 * Transforms an `HttpRequest` into a stream of `HttpEvent`s, one of which will likely be a
 * `HttpResponse`.
 *
 * `HttpHandler` is injectable. When injected, the handler instance dispatches requests to the
 * first interceptor in the chain, which dispatches to the second, etc, eventually reaching the
 * `HttpBackend`.
 *
 * In an `HttpInterceptor`, the `HttpHandler` parameter is the next interceptor in the chain.
 *
 * @publicApi
 */
class HttpHandler {}
/**
 * A final `HttpHandler` which will dispatch the request via browser HTTP APIs to a backend.
 *
 * Interceptors sit between the `HttpClient` interface and the `HttpBackend`.
 *
 * When injected, `HttpBackend` dispatches requests directly to the backend, without going
 * through the interceptor chain.
 *
 * @publicApi
 */
class HttpBackend {}

/**
 * Represents the header configuration options for an HTTP request.
 * Instances are immutable. Modifying methods return a cloned
 * instance with the change. The original object is never changed.
 *
 * @publicApi
 */
class HttpHeaders {
  /**  Constructs a new HTTP header object with the given values.*/
  constructor(headers) {
    /**
     * Internal map of lowercased header names to the normalized
     * form of the name (the form seen first).
     */
    this.normalizedNames = new Map();
    /**
     * Queued updates to be materialized the next initialization.
     */
    this.lazyUpdate = null;
    if (!headers) {
      this.headers = new Map();
    } else if (typeof headers === 'string') {
      this.lazyInit = () => {
        this.headers = new Map();
        headers.split('\n').forEach(line => {
          const index = line.indexOf(':');
          if (index > 0) {
            const name = line.slice(0, index);
            const key = name.toLowerCase();
            const value = line.slice(index + 1).trim();
            this.maybeSetNormalizedName(name, key);
            if (this.headers.has(key)) {
              this.headers.get(key).push(value);
            } else {
              this.headers.set(key, [value]);
            }
          }
        });
      };
    } else {
      this.lazyInit = () => {
        if (typeof ngDevMode === 'undefined' || ngDevMode) {
          assertValidHeaders(headers);
        }
        this.headers = new Map();
        Object.entries(headers).forEach(([name, values]) => {
          let headerValues;
          if (typeof values === 'string') {
            headerValues = [values];
          } else if (typeof values === 'number') {
            headerValues = [values.toString()];
          } else {
            headerValues = values.map(value => value.toString());
          }
          if (headerValues.length > 0) {
            const key = name.toLowerCase();
            this.headers.set(key, headerValues);
            this.maybeSetNormalizedName(name, key);
          }
        });
      };
    }
  }
  /**
   * Checks for existence of a given header.
   *
   * @param name The header name to check for existence.
   *
   * @returns True if the header exists, false otherwise.
   */
  has(name) {
    this.init();
    return this.headers.has(name.toLowerCase());
  }
  /**
   * Retrieves the first value of a given header.
   *
   * @param name The header name.
   *
   * @returns The value string if the header exists, null otherwise
   */
  get(name) {
    this.init();
    const values = this.headers.get(name.toLowerCase());
    return values && values.length > 0 ? values[0] : null;
  }
  /**
   * Retrieves the names of the headers.
   *
   * @returns A list of header names.
   */
  keys() {
    this.init();
    return Array.from(this.normalizedNames.values());
  }
  /**
   * Retrieves a list of values for a given header.
   *
   * @param name The header name from which to retrieve values.
   *
   * @returns A string of values if the header exists, null otherwise.
   */
  getAll(name) {
    this.init();
    return this.headers.get(name.toLowerCase()) || null;
  }
  /**
   * Appends a new value to the existing set of values for a header
   * and returns them in a clone of the original instance.
   *
   * @param name The header name for which to append the values.
   * @param value The value to append.
   *
   * @returns A clone of the HTTP headers object with the value appended to the given header.
   */
  append(name, value) {
    return this.clone({
      name,
      value,
      op: 'a'
    });
  }
  /**
   * Sets or modifies a value for a given header in a clone of the original instance.
   * If the header already exists, its value is replaced with the given value
   * in the returned object.
   *
   * @param name The header name.
   * @param value The value or values to set or override for the given header.
   *
   * @returns A clone of the HTTP headers object with the newly set header value.
   */
  set(name, value) {
    return this.clone({
      name,
      value,
      op: 's'
    });
  }
  /**
   * Deletes values for a given header in a clone of the original instance.
   *
   * @param name The header name.
   * @param value The value or values to delete for the given header.
   *
   * @returns A clone of the HTTP headers object with the given value deleted.
   */
  delete(name, value) {
    return this.clone({
      name,
      value,
      op: 'd'
    });
  }
  maybeSetNormalizedName(name, lcName) {
    if (!this.normalizedNames.has(lcName)) {
      this.normalizedNames.set(lcName, name);
    }
  }
  init() {
    if (!!this.lazyInit) {
      if (this.lazyInit instanceof HttpHeaders) {
        this.copyFrom(this.lazyInit);
      } else {
        this.lazyInit();
      }
      this.lazyInit = null;
      if (!!this.lazyUpdate) {
        this.lazyUpdate.forEach(update => this.applyUpdate(update));
        this.lazyUpdate = null;
      }
    }
  }
  copyFrom(other) {
    other.init();
    Array.from(other.headers.keys()).forEach(key => {
      this.headers.set(key, other.headers.get(key));
      this.normalizedNames.set(key, other.normalizedNames.get(key));
    });
  }
  clone(update) {
    const clone = new HttpHeaders();
    clone.lazyInit = !!this.lazyInit && this.lazyInit instanceof HttpHeaders ? this.lazyInit : this;
    clone.lazyUpdate = (this.lazyUpdate || []).concat([update]);
    return clone;
  }
  applyUpdate(update) {
    const key = update.name.toLowerCase();
    switch (update.op) {
      case 'a':
      case 's':
        let value = update.value;
        if (typeof value === 'string') {
          value = [value];
        }
        if (value.length === 0) {
          return;
        }
        this.maybeSetNormalizedName(update.name, key);
        const base = (update.op === 'a' ? this.headers.get(key) : undefined) || [];
        base.push(...value);
        this.headers.set(key, base);
        break;
      case 'd':
        const toDelete = update.value;
        if (!toDelete) {
          this.headers.delete(key);
          this.normalizedNames.delete(key);
        } else {
          let existing = this.headers.get(key);
          if (!existing) {
            return;
          }
          existing = existing.filter(value => toDelete.indexOf(value) === -1);
          if (existing.length === 0) {
            this.headers.delete(key);
            this.normalizedNames.delete(key);
          } else {
            this.headers.set(key, existing);
          }
        }
        break;
    }
  }
  /**
   * @internal
   */
  forEach(fn) {
    this.init();
    Array.from(this.normalizedNames.keys()).forEach(key => fn(this.normalizedNames.get(key), this.headers.get(key)));
  }
}
/**
 * Verifies that the headers object has the right shape: the values
 * must be either strings, numbers or arrays. Throws an error if an invalid
 * header value is present.
 */
function assertValidHeaders(headers) {
  for (const [key, value] of Object.entries(headers)) {
    if (!(typeof value === 'string' || typeof value === 'number') && !Array.isArray(value)) {
      throw new Error(`Unexpected value of the \`${key}\` header provided. ` + `Expecting either a string, a number or an array, but got: \`${value}\`.`);
    }
  }
}

/**
 * Provides encoding and decoding of URL parameter and query-string values.
 *
 * Serializes and parses URL parameter keys and values to encode and decode them.
 * If you pass URL query parameters without encoding,
 * the query parameters can be misinterpreted at the receiving end.
 *
 *
 * @publicApi
 */
class HttpUrlEncodingCodec {
  /**
   * Encodes a key name for a URL parameter or query-string.
   * @param key The key name.
   * @returns The encoded key name.
   */
  encodeKey(key) {
    return standardEncoding(key);
  }
  /**
   * Encodes the value of a URL parameter or query-string.
   * @param value The value.
   * @returns The encoded value.
   */
  encodeValue(value) {
    return standardEncoding(value);
  }
  /**
   * Decodes an encoded URL parameter or query-string key.
   * @param key The encoded key name.
   * @returns The decoded key name.
   */
  decodeKey(key) {
    return decodeURIComponent(key);
  }
  /**
   * Decodes an encoded URL parameter or query-string value.
   * @param value The encoded value.
   * @returns The decoded value.
   */
  decodeValue(value) {
    return decodeURIComponent(value);
  }
}
function paramParser(rawParams, codec) {
  const map = new Map();
  if (rawParams.length > 0) {
    // The `window.location.search` can be used while creating an instance of the `HttpParams` class
    // (e.g. `new HttpParams({ fromString: window.location.search })`). The `window.location.search`
    // may start with the `?` char, so we strip it if it's present.
    const params = rawParams.replace(/^\?/, '').split('&');
    params.forEach(param => {
      const eqIdx = param.indexOf('=');
      const [key, val] = eqIdx == -1 ? [codec.decodeKey(param), ''] : [codec.decodeKey(param.slice(0, eqIdx)), codec.decodeValue(param.slice(eqIdx + 1))];
      const list = map.get(key) || [];
      list.push(val);
      map.set(key, list);
    });
  }
  return map;
}
/**
 * Encode input string with standard encodeURIComponent and then un-encode specific characters.
 */
const STANDARD_ENCODING_REGEX = /%(\d[a-f0-9])/gi;
const STANDARD_ENCODING_REPLACEMENTS = {
  '40': '@',
  '3A': ':',
  '24': '$',
  '2C': ',',
  '3B': ';',
  '3D': '=',
  '3F': '?',
  '2F': '/'
};
function standardEncoding(v) {
  return encodeURIComponent(v).replace(STANDARD_ENCODING_REGEX, (s, t) => STANDARD_ENCODING_REPLACEMENTS[t] ?? s);
}
function valueToString(value) {
  return `${value}`;
}
/**
 * An HTTP request/response body that represents serialized parameters,
 * per the MIME type `application/x-www-form-urlencoded`.
 *
 * This class is immutable; all mutation operations return a new instance.
 *
 * @publicApi
 */
class HttpParams {
  constructor(options = {}) {
    this.updates = null;
    this.cloneFrom = null;
    this.encoder = options.encoder || new HttpUrlEncodingCodec();
    if (!!options.fromString) {
      if (!!options.fromObject) {
        throw new Error(`Cannot specify both fromString and fromObject.`);
      }
      this.map = paramParser(options.fromString, this.encoder);
    } else if (!!options.fromObject) {
      this.map = new Map();
      Object.keys(options.fromObject).forEach(key => {
        const value = options.fromObject[key];
        // convert the values to strings
        const values = Array.isArray(value) ? value.map(valueToString) : [valueToString(value)];
        this.map.set(key, values);
      });
    } else {
      this.map = null;
    }
  }
  /**
   * Reports whether the body includes one or more values for a given parameter.
   * @param param The parameter name.
   * @returns True if the parameter has one or more values,
   * false if it has no value or is not present.
   */
  has(param) {
    this.init();
    return this.map.has(param);
  }
  /**
   * Retrieves the first value for a parameter.
   * @param param The parameter name.
   * @returns The first value of the given parameter,
   * or `null` if the parameter is not present.
   */
  get(param) {
    this.init();
    const res = this.map.get(param);
    return !!res ? res[0] : null;
  }
  /**
   * Retrieves all values for a  parameter.
   * @param param The parameter name.
   * @returns All values in a string array,
   * or `null` if the parameter not present.
   */
  getAll(param) {
    this.init();
    return this.map.get(param) || null;
  }
  /**
   * Retrieves all the parameters for this body.
   * @returns The parameter names in a string array.
   */
  keys() {
    this.init();
    return Array.from(this.map.keys());
  }
  /**
   * Appends a new value to existing values for a parameter.
   * @param param The parameter name.
   * @param value The new value to add.
   * @return A new body with the appended value.
   */
  append(param, value) {
    return this.clone({
      param,
      value,
      op: 'a'
    });
  }
  /**
   * Constructs a new body with appended values for the given parameter name.
   * @param params parameters and values
   * @return A new body with the new value.
   */
  appendAll(params) {
    const updates = [];
    Object.keys(params).forEach(param => {
      const value = params[param];
      if (Array.isArray(value)) {
        value.forEach(_value => {
          updates.push({
            param,
            value: _value,
            op: 'a'
          });
        });
      } else {
        updates.push({
          param,
          value: value,
          op: 'a'
        });
      }
    });
    return this.clone(updates);
  }
  /**
   * Replaces the value for a parameter.
   * @param param The parameter name.
   * @param value The new value.
   * @return A new body with the new value.
   */
  set(param, value) {
    return this.clone({
      param,
      value,
      op: 's'
    });
  }
  /**
   * Removes a given value or all values from a parameter.
   * @param param The parameter name.
   * @param value The value to remove, if provided.
   * @return A new body with the given value removed, or with all values
   * removed if no value is specified.
   */
  delete(param, value) {
    return this.clone({
      param,
      value,
      op: 'd'
    });
  }
  /**
   * Serializes the body to an encoded string, where key-value pairs (separated by `=`) are
   * separated by `&`s.
   */
  toString() {
    this.init();
    return this.keys().map(key => {
      const eKey = this.encoder.encodeKey(key);
      // `a: ['1']` produces `'a=1'`
      // `b: []` produces `''`
      // `c: ['1', '2']` produces `'c=1&c=2'`
      return this.map.get(key).map(value => eKey + '=' + this.encoder.encodeValue(value)).join('&');
    })
    // filter out empty values because `b: []` produces `''`
    // which results in `a=1&&c=1&c=2` instead of `a=1&c=1&c=2` if we don't
    .filter(param => param !== '').join('&');
  }
  clone(update) {
    const clone = new HttpParams({
      encoder: this.encoder
    });
    clone.cloneFrom = this.cloneFrom || this;
    clone.updates = (this.updates || []).concat(update);
    return clone;
  }
  init() {
    if (this.map === null) {
      this.map = new Map();
    }
    if (this.cloneFrom !== null) {
      this.cloneFrom.init();
      this.cloneFrom.keys().forEach(key => this.map.set(key, this.cloneFrom.map.get(key)));
      this.updates.forEach(update => {
        switch (update.op) {
          case 'a':
          case 's':
            const base = (update.op === 'a' ? this.map.get(update.param) : undefined) || [];
            base.push(valueToString(update.value));
            this.map.set(update.param, base);
            break;
          case 'd':
            if (update.value !== undefined) {
              let base = this.map.get(update.param) || [];
              const idx = base.indexOf(valueToString(update.value));
              if (idx !== -1) {
                base.splice(idx, 1);
              }
              if (base.length > 0) {
                this.map.set(update.param, base);
              } else {
                this.map.delete(update.param);
              }
            } else {
              this.map.delete(update.param);
              break;
            }
        }
      });
      this.cloneFrom = this.updates = null;
    }
  }
}

/**
 * A token used to manipulate and access values stored in `HttpContext`.
 *
 * @publicApi
 */
class HttpContextToken {
  constructor(defaultValue) {
    this.defaultValue = defaultValue;
  }
}
/**
 * Http context stores arbitrary user defined values and ensures type safety without
 * actually knowing the types. It is backed by a `Map` and guarantees that keys do not clash.
 *
 * This context is mutable and is shared between cloned requests unless explicitly specified.
 *
 * @usageNotes
 *
 * ### Usage Example
 *
 * ```typescript
 * // inside cache.interceptors.ts
 * export const IS_CACHE_ENABLED = new HttpContextToken<boolean>(() => false);
 *
 * export class CacheInterceptor implements HttpInterceptor {
 *
 *   intercept(req: HttpRequest<any>, delegate: HttpHandler): Observable<HttpEvent<any>> {
 *     if (req.context.get(IS_CACHE_ENABLED) === true) {
 *       return ...;
 *     }
 *     return delegate.handle(req);
 *   }
 * }
 *
 * // inside a service
 *
 * this.httpClient.get('/api/weather', {
 *   context: new HttpContext().set(IS_CACHE_ENABLED, true)
 * }).subscribe(...);
 * ```
 *
 * @publicApi
 */
class HttpContext {
  constructor() {
    this.map = new Map();
  }
  /**
   * Store a value in the context. If a value is already present it will be overwritten.
   *
   * @param token The reference to an instance of `HttpContextToken`.
   * @param value The value to store.
   *
   * @returns A reference to itself for easy chaining.
   */
  set(token, value) {
    this.map.set(token, value);
    return this;
  }
  /**
   * Retrieve the value associated with the given token.
   *
   * @param token The reference to an instance of `HttpContextToken`.
   *
   * @returns The stored value or default if one is defined.
   */
  get(token) {
    if (!this.map.has(token)) {
      this.map.set(token, token.defaultValue());
    }
    return this.map.get(token);
  }
  /**
   * Delete the value associated with the given token.
   *
   * @param token The reference to an instance of `HttpContextToken`.
   *
   * @returns A reference to itself for easy chaining.
   */
  delete(token) {
    this.map.delete(token);
    return this;
  }
  /**
   * Checks for existence of a given token.
   *
   * @param token The reference to an instance of `HttpContextToken`.
   *
   * @returns True if the token exists, false otherwise.
   */
  has(token) {
    return this.map.has(token);
  }
  /**
   * @returns a list of tokens currently stored in the context.
   */
  keys() {
    return this.map.keys();
  }
}

/**
 * Determine whether the given HTTP method may include a body.
 */
function mightHaveBody(method) {
  switch (method) {
    case 'DELETE':
    case 'GET':
    case 'HEAD':
    case 'OPTIONS':
    case 'JSONP':
      return false;
    default:
      return true;
  }
}
/**
 * Safely assert whether the given value is an ArrayBuffer.
 *
 * In some execution environments ArrayBuffer is not defined.
 */
function isArrayBuffer(value) {
  return typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer;
}
/**
 * Safely assert whether the given value is a Blob.
 *
 * In some execution environments Blob is not defined.
 */
function isBlob(value) {
  return typeof Blob !== 'undefined' && value instanceof Blob;
}
/**
 * Safely assert whether the given value is a FormData instance.
 *
 * In some execution environments FormData is not defined.
 */
function isFormData(value) {
  return typeof FormData !== 'undefined' && value instanceof FormData;
}
/**
 * Safely assert whether the given value is a URLSearchParams instance.
 *
 * In some execution environments URLSearchParams is not defined.
 */
function isUrlSearchParams(value) {
  return typeof URLSearchParams !== 'undefined' && value instanceof URLSearchParams;
}
/**
 * An outgoing HTTP request with an optional typed body.
 *
 * `HttpRequest` represents an outgoing request, including URL, method,
 * headers, body, and other request configuration options. Instances should be
 * assumed to be immutable. To modify a `HttpRequest`, the `clone`
 * method should be used.
 *
 * @publicApi
 */
class HttpRequest {
  constructor(method, url, third, fourth) {
    this.url = url;
    /**
     * The request body, or `null` if one isn't set.
     *
     * Bodies are not enforced to be immutable, as they can include a reference to any
     * user-defined data type. However, interceptors should take care to preserve
     * idempotence by treating them as such.
     */
    this.body = null;
    /**
     * Whether this request should be made in a way that exposes progress events.
     *
     * Progress events are expensive (change detection runs on each event) and so
     * they should only be requested if the consumer intends to monitor them.
     */
    this.reportProgress = false;
    /**
     * Whether this request should be sent with outgoing credentials (cookies).
     */
    this.withCredentials = false;
    /**
     * The expected response type of the server.
     *
     * This is used to parse the response appropriately before returning it to
     * the requestee.
     */
    this.responseType = 'json';
    this.method = method.toUpperCase();
    // Next, need to figure out which argument holds the HttpRequestInit
    // options, if any.
    let options;
    // Check whether a body argument is expected. The only valid way to omit
    // the body argument is to use a known no-body method like GET.
    if (mightHaveBody(this.method) || !!fourth) {
      // Body is the third argument, options are the fourth.
      this.body = third !== undefined ? third : null;
      options = fourth;
    } else {
      // No body required, options are the third argument. The body stays null.
      options = third;
    }
    // If options have been passed, interpret them.
    if (options) {
      // Normalize reportProgress and withCredentials.
      this.reportProgress = !!options.reportProgress;
      this.withCredentials = !!options.withCredentials;
      // Override default response type of 'json' if one is provided.
      if (!!options.responseType) {
        this.responseType = options.responseType;
      }
      // Override headers if they're provided.
      if (!!options.headers) {
        this.headers = options.headers;
      }
      if (!!options.context) {
        this.context = options.context;
      }
      if (!!options.params) {
        this.params = options.params;
      }
    }
    // If no headers have been passed in, construct a new HttpHeaders instance.
    if (!this.headers) {
      this.headers = new HttpHeaders();
    }
    // If no context have been passed in, construct a new HttpContext instance.
    if (!this.context) {
      this.context = new HttpContext();
    }
    // If no parameters have been passed in, construct a new HttpUrlEncodedParams instance.
    if (!this.params) {
      this.params = new HttpParams();
      this.urlWithParams = url;
    } else {
      // Encode the parameters to a string in preparation for inclusion in the URL.
      const params = this.params.toString();
      if (params.length === 0) {
        // No parameters, the visible URL is just the URL given at creation time.
        this.urlWithParams = url;
      } else {
        // Does the URL already have query parameters? Look for '?'.
        const qIdx = url.indexOf('?');
        // There are 3 cases to handle:
        // 1) No existing parameters -> append '?' followed by params.
        // 2) '?' exists and is followed by existing query string ->
        //    append '&' followed by params.
        // 3) '?' exists at the end of the url -> append params directly.
        // This basically amounts to determining the character, if any, with
        // which to join the URL and parameters.
        const sep = qIdx === -1 ? '?' : qIdx < url.length - 1 ? '&' : '';
        this.urlWithParams = url + sep + params;
      }
    }
  }
  /**
   * Transform the free-form body into a serialized format suitable for
   * transmission to the server.
   */
  serializeBody() {
    // If no body is present, no need to serialize it.
    if (this.body === null) {
      return null;
    }
    // Check whether the body is already in a serialized form. If so,
    // it can just be returned directly.
    if (isArrayBuffer(this.body) || isBlob(this.body) || isFormData(this.body) || isUrlSearchParams(this.body) || typeof this.body === 'string') {
      return this.body;
    }
    // Check whether the body is an instance of HttpUrlEncodedParams.
    if (this.body instanceof HttpParams) {
      return this.body.toString();
    }
    // Check whether the body is an object or array, and serialize with JSON if so.
    if (typeof this.body === 'object' || typeof this.body === 'boolean' || Array.isArray(this.body)) {
      return JSON.stringify(this.body);
    }
    // Fall back on toString() for everything else.
    return this.body.toString();
  }
  /**
   * Examine the body and attempt to infer an appropriate MIME type
   * for it.
   *
   * If no such type can be inferred, this method will return `null`.
   */
  detectContentTypeHeader() {
    // An empty body has no content type.
    if (this.body === null) {
      return null;
    }
    // FormData bodies rely on the browser's content type assignment.
    if (isFormData(this.body)) {
      return null;
    }
    // Blobs usually have their own content type. If it doesn't, then
    // no type can be inferred.
    if (isBlob(this.body)) {
      return this.body.type || null;
    }
    // Array buffers have unknown contents and thus no type can be inferred.
    if (isArrayBuffer(this.body)) {
      return null;
    }
    // Technically, strings could be a form of JSON data, but it's safe enough
    // to assume they're plain strings.
    if (typeof this.body === 'string') {
      return 'text/plain';
    }
    // `HttpUrlEncodedParams` has its own content-type.
    if (this.body instanceof HttpParams) {
      return 'application/x-www-form-urlencoded;charset=UTF-8';
    }
    // Arrays, objects, boolean and numbers will be encoded as JSON.
    if (typeof this.body === 'object' || typeof this.body === 'number' || typeof this.body === 'boolean') {
      return 'application/json';
    }
    // No type could be inferred.
    return null;
  }
  clone(update = {}) {
    // For method, url, and responseType, take the current value unless
    // it is overridden in the update hash.
    const method = update.method || this.method;
    const url = update.url || this.url;
    const responseType = update.responseType || this.responseType;
    // The body is somewhat special - a `null` value in update.body means
    // whatever current body is present is being overridden with an empty
    // body, whereas an `undefined` value in update.body implies no
    // override.
    const body = update.body !== undefined ? update.body : this.body;
    // Carefully handle the boolean options to differentiate between
    // `false` and `undefined` in the update args.
    const withCredentials = update.withCredentials !== undefined ? update.withCredentials : this.withCredentials;
    const reportProgress = update.reportProgress !== undefined ? update.reportProgress : this.reportProgress;
    // Headers and params may be appended to if `setHeaders` or
    // `setParams` are used.
    let headers = update.headers || this.headers;
    let params = update.params || this.params;
    // Pass on context if needed
    const context = update.context ?? this.context;
    // Check whether the caller has asked to add headers.
    if (update.setHeaders !== undefined) {
      // Set every requested header.
      headers = Object.keys(update.setHeaders).reduce((headers, name) => headers.set(name, update.setHeaders[name]), headers);
    }
    // Check whether the caller has asked to set params.
    if (update.setParams) {
      // Set every requested param.
      params = Object.keys(update.setParams).reduce((params, param) => params.set(param, update.setParams[param]), params);
    }
    // Finally, construct the new HttpRequest using the pieces from above.
    return new HttpRequest(method, url, body, {
      params,
      headers,
      context,
      reportProgress,
      responseType,
      withCredentials
    });
  }
}

/**
 * Type enumeration for the different kinds of `HttpEvent`.
 *
 * @publicApi
 */
var HttpEventType;
(function (HttpEventType) {
  /**
   * The request was sent out over the wire.
   */
  HttpEventType[HttpEventType["Sent"] = 0] = "Sent";
  /**
   * An upload progress event was received.
   */
  HttpEventType[HttpEventType["UploadProgress"] = 1] = "UploadProgress";
  /**
   * The response status code and headers were received.
   */
  HttpEventType[HttpEventType["ResponseHeader"] = 2] = "ResponseHeader";
  /**
   * A download progress event was received.
   */
  HttpEventType[HttpEventType["DownloadProgress"] = 3] = "DownloadProgress";
  /**
   * The full response including the body was received.
   */
  HttpEventType[HttpEventType["Response"] = 4] = "Response";
  /**
   * A custom event from an interceptor or a backend.
   */
  HttpEventType[HttpEventType["User"] = 5] = "User";
})(HttpEventType || (HttpEventType = {}));
/**
 * Base class for both `HttpResponse` and `HttpHeaderResponse`.
 *
 * @publicApi
 */
class HttpResponseBase {
  /**
   * Super-constructor for all responses.
   *
   * The single parameter accepted is an initialization hash. Any properties
   * of the response passed there will override the default values.
   */
  constructor(init, defaultStatus = 200 /* HttpStatusCode.Ok */, defaultStatusText = 'OK') {
    // If the hash has values passed, use them to initialize the response.
    // Otherwise use the default values.
    this.headers = init.headers || new HttpHeaders();
    this.status = init.status !== undefined ? init.status : defaultStatus;
    this.statusText = init.statusText || defaultStatusText;
    this.url = init.url || null;
    // Cache the ok value to avoid defining a getter.
    this.ok = this.status >= 200 && this.status < 300;
  }
}
/**
 * A partial HTTP response which only includes the status and header data,
 * but no response body.
 *
 * `HttpHeaderResponse` is a `HttpEvent` available on the response
 * event stream, only when progress events are requested.
 *
 * @publicApi
 */
class HttpHeaderResponse extends HttpResponseBase {
  /**
   * Create a new `HttpHeaderResponse` with the given parameters.
   */
  constructor(init = {}) {
    super(init);
    this.type = HttpEventType.ResponseHeader;
  }
  /**
   * Copy this `HttpHeaderResponse`, overriding its contents with the
   * given parameter hash.
   */
  clone(update = {}) {
    // Perform a straightforward initialization of the new HttpHeaderResponse,
    // overriding the current parameters with new ones if given.
    return new HttpHeaderResponse({
      headers: update.headers || this.headers,
      status: update.status !== undefined ? update.status : this.status,
      statusText: update.statusText || this.statusText,
      url: update.url || this.url || undefined
    });
  }
}
/**
 * A full HTTP response, including a typed response body (which may be `null`
 * if one was not returned).
 *
 * `HttpResponse` is a `HttpEvent` available on the response event
 * stream.
 *
 * @publicApi
 */
class HttpResponse extends HttpResponseBase {
  /**
   * Construct a new `HttpResponse`.
   */
  constructor(init = {}) {
    super(init);
    this.type = HttpEventType.Response;
    this.body = init.body !== undefined ? init.body : null;
  }
  clone(update = {}) {
    return new HttpResponse({
      body: update.body !== undefined ? update.body : this.body,
      headers: update.headers || this.headers,
      status: update.status !== undefined ? update.status : this.status,
      statusText: update.statusText || this.statusText,
      url: update.url || this.url || undefined
    });
  }
}
/**
 * A response that represents an error or failure, either from a
 * non-successful HTTP status, an error while executing the request,
 * or some other failure which occurred during the parsing of the response.
 *
 * Any error returned on the `Observable` response stream will be
 * wrapped in an `HttpErrorResponse` to provide additional context about
 * the state of the HTTP layer when the error occurred. The error property
 * will contain either a wrapped Error object or the error response returned
 * from the server.
 *
 * @publicApi
 */
class HttpErrorResponse extends HttpResponseBase {
  constructor(init) {
    // Initialize with a default status of 0 / Unknown Error.
    super(init, 0, 'Unknown Error');
    this.name = 'HttpErrorResponse';
    /**
     * Errors are never okay, even when the status code is in the 2xx success range.
     */
    this.ok = false;
    // If the response was successful, then this was a parse error. Otherwise, it was
    // a protocol-level failure of some sort. Either the request failed in transit
    // or the server returned an unsuccessful status code.
    if (this.status >= 200 && this.status < 300) {
      this.message = `Http failure during parsing for ${init.url || '(unknown url)'}`;
    } else {
      this.message = `Http failure response for ${init.url || '(unknown url)'}: ${init.status} ${init.statusText}`;
    }
    this.error = init.error || null;
  }
}

/**
 * Constructs an instance of `HttpRequestOptions<T>` from a source `HttpMethodOptions` and
 * the given `body`. This function clones the object and adds the body.
 *
 * Note that the `responseType` *options* value is a String that identifies the
 * single data type of the response.
 * A single overload version of the method handles each response type.
 * The value of `responseType` cannot be a union, as the combined signature could imply.
 *
 */
function addBody(options, body) {
  return {
    body,
    headers: options.headers,
    context: options.context,
    observe: options.observe,
    params: options.params,
    reportProgress: options.reportProgress,
    responseType: options.responseType,
    withCredentials: options.withCredentials
  };
}
/**
 * Performs HTTP requests.
 * This service is available as an injectable class, with methods to perform HTTP requests.
 * Each request method has multiple signatures, and the return type varies based on
 * the signature that is called (mainly the values of `observe` and `responseType`).
 *
 * Note that the `responseType` *options* value is a String that identifies the
 * single data type of the response.
 * A single overload version of the method handles each response type.
 * The value of `responseType` cannot be a union, as the combined signature could imply.

 *
 * @usageNotes
 * Sample HTTP requests for the [Tour of Heroes](/tutorial/tour-of-heroes/toh-pt0) application.
 *
 * ### HTTP Request Example
 *
 * ```
 *  // GET heroes whose name contains search term
 * searchHeroes(term: string): observable<Hero[]>{
 *
 *  const params = new HttpParams({fromString: 'name=term'});
 *    return this.httpClient.request('GET', this.heroesUrl, {responseType:'json', params});
 * }
 * ```
 *
 * Alternatively, the parameter string can be used without invoking HttpParams
 * by directly joining to the URL.
 * ```
 * this.httpClient.request('GET', this.heroesUrl + '?' + 'name=term', {responseType:'json'});
 * ```
 *
 *
 * ### JSONP Example
 * ```
 * requestJsonp(url, callback = 'callback') {
 *  return this.httpClient.jsonp(this.heroesURL, callback);
 * }
 * ```
 *
 * ### PATCH Example
 * ```
 * // PATCH one of the heroes' name
 * patchHero (id: number, heroName: string): Observable<{}> {
 * const url = `${this.heroesUrl}/${id}`;   // PATCH api/heroes/42
 *  return this.httpClient.patch(url, {name: heroName}, httpOptions)
 *    .pipe(catchError(this.handleError('patchHero')));
 * }
 * ```
 *
 * @see [HTTP Guide](guide/http)
 * @see [HTTP Request](api/common/http/HttpRequest)
 *
 * @publicApi
 */
class HttpClient {
  constructor(handler) {
    this.handler = handler;
  }
  /**
   * Constructs an observable for a generic HTTP request that, when subscribed,
   * fires the request through the chain of registered interceptors and on to the
   * server.
   *
   * You can pass an `HttpRequest` directly as the only parameter. In this case,
   * the call returns an observable of the raw `HttpEvent` stream.
   *
   * Alternatively you can pass an HTTP method as the first parameter,
   * a URL string as the second, and an options hash containing the request body as the third.
   * See `addBody()`. In this case, the specified `responseType` and `observe` options determine the
   * type of returned observable.
   *   * The `responseType` value determines how a successful response body is parsed.
   *   * If `responseType` is the default `json`, you can pass a type interface for the resulting
   * object as a type parameter to the call.
   *
   * The `observe` value determines the return type, according to what you are interested in
   * observing.
   *   * An `observe` value of events returns an observable of the raw `HttpEvent` stream, including
   * progress events by default.
   *   * An `observe` value of response returns an observable of `HttpResponse<T>`,
   * where the `T` parameter depends on the `responseType` and any optionally provided type
   * parameter.
   *   * An `observe` value of body returns an observable of `<T>` with the same `T` body type.
   *
   */
  request(first, url, options = {}) {
    let req;
    // First, check whether the primary argument is an instance of `HttpRequest`.
    if (first instanceof HttpRequest) {
      // It is. The other arguments must be undefined (per the signatures) and can be
      // ignored.
      req = first;
    } else {
      // It's a string, so it represents a URL. Construct a request based on it,
      // and incorporate the remaining arguments (assuming `GET` unless a method is
      // provided.
      // Figure out the headers.
      let headers = undefined;
      if (options.headers instanceof HttpHeaders) {
        headers = options.headers;
      } else {
        headers = new HttpHeaders(options.headers);
      }
      // Sort out parameters.
      let params = undefined;
      if (!!options.params) {
        if (options.params instanceof HttpParams) {
          params = options.params;
        } else {
          params = new HttpParams({
            fromObject: options.params
          });
        }
      }
      // Construct the request.
      req = new HttpRequest(first, url, options.body !== undefined ? options.body : null, {
        headers,
        context: options.context,
        params,
        reportProgress: options.reportProgress,
        // By default, JSON is assumed to be returned for all calls.
        responseType: options.responseType || 'json',
        withCredentials: options.withCredentials
      });
    }
    // Start with an Observable.of() the initial request, and run the handler (which
    // includes all interceptors) inside a concatMap(). This way, the handler runs
    // inside an Observable chain, which causes interceptors to be re-run on every
    // subscription (this also makes retries re-run the handler, including interceptors).
    const events$ = of(req).pipe(concatMap(req => this.handler.handle(req)));
    // If coming via the API signature which accepts a previously constructed HttpRequest,
    // the only option is to get the event stream. Otherwise, return the event stream if
    // that is what was requested.
    if (first instanceof HttpRequest || options.observe === 'events') {
      return events$;
    }
    // The requested stream contains either the full response or the body. In either
    // case, the first step is to filter the event stream to extract a stream of
    // responses(s).
    const res$ = events$.pipe(filter(event => event instanceof HttpResponse));
    // Decide which stream to return.
    switch (options.observe || 'body') {
      case 'body':
        // The requested stream is the body. Map the response stream to the response
        // body. This could be done more simply, but a misbehaving interceptor might
        // transform the response body into a different format and ignore the requested
        // responseType. Guard against this by validating that the response is of the
        // requested type.
        switch (req.responseType) {
          case 'arraybuffer':
            return res$.pipe(map(res => {
              // Validate that the body is an ArrayBuffer.
              if (res.body !== null && !(res.body instanceof ArrayBuffer)) {
                throw new Error('Response is not an ArrayBuffer.');
              }
              return res.body;
            }));
          case 'blob':
            return res$.pipe(map(res => {
              // Validate that the body is a Blob.
              if (res.body !== null && !(res.body instanceof Blob)) {
                throw new Error('Response is not a Blob.');
              }
              return res.body;
            }));
          case 'text':
            return res$.pipe(map(res => {
              // Validate that the body is a string.
              if (res.body !== null && typeof res.body !== 'string') {
                throw new Error('Response is not a string.');
              }
              return res.body;
            }));
          case 'json':
          default:
            // No validation needed for JSON responses, as they can be of any type.
            return res$.pipe(map(res => res.body));
        }
      case 'response':
        // The response stream was requested directly, so return it.
        return res$;
      default:
        // Guard against new future observe types being added.
        throw new Error(`Unreachable: unhandled observe type ${options.observe}}`);
    }
  }
  /**
   * Constructs an observable that, when subscribed, causes the configured
   * `DELETE` request to execute on the server. See the individual overloads for
   * details on the return type.
   *
   * @param url     The endpoint URL.
   * @param options The HTTP options to send with the request.
   *
   */
  delete(url, options = {}) {
    return this.request('DELETE', url, options);
  }
  /**
   * Constructs an observable that, when subscribed, causes the configured
   * `GET` request to execute on the server. See the individual overloads for
   * details on the return type.
   */
  get(url, options = {}) {
    return this.request('GET', url, options);
  }
  /**
   * Constructs an observable that, when subscribed, causes the configured
   * `HEAD` request to execute on the server. The `HEAD` method returns
   * meta information about the resource without transferring the
   * resource itself. See the individual overloads for
   * details on the return type.
   */
  head(url, options = {}) {
    return this.request('HEAD', url, options);
  }
  /**
   * Constructs an `Observable` that, when subscribed, causes a request with the special method
   * `JSONP` to be dispatched via the interceptor pipeline.
   * The [JSONP pattern](https://en.wikipedia.org/wiki/JSONP) works around limitations of certain
   * API endpoints that don't support newer,
   * and preferable [CORS](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS) protocol.
   * JSONP treats the endpoint API as a JavaScript file and tricks the browser to process the
   * requests even if the API endpoint is not located on the same domain (origin) as the client-side
   * application making the request.
   * The endpoint API must support JSONP callback for JSONP requests to work.
   * The resource API returns the JSON response wrapped in a callback function.
   * You can pass the callback function name as one of the query parameters.
   * Note that JSONP requests can only be used with `GET` requests.
   *
   * @param url The resource URL.
   * @param callbackParam The callback function name.
   *
   */
  jsonp(url, callbackParam) {
    return this.request('JSONP', url, {
      params: new HttpParams().append(callbackParam, 'JSONP_CALLBACK'),
      observe: 'body',
      responseType: 'json'
    });
  }
  /**
   * Constructs an `Observable` that, when subscribed, causes the configured
   * `OPTIONS` request to execute on the server. This method allows the client
   * to determine the supported HTTP methods and other capabilities of an endpoint,
   * without implying a resource action. See the individual overloads for
   * details on the return type.
   */
  options(url, options = {}) {
    return this.request('OPTIONS', url, options);
  }
  /**
   * Constructs an observable that, when subscribed, causes the configured
   * `PATCH` request to execute on the server. See the individual overloads for
   * details on the return type.
   */
  patch(url, body, options = {}) {
    return this.request('PATCH', url, addBody(options, body));
  }
  /**
   * Constructs an observable that, when subscribed, causes the configured
   * `POST` request to execute on the server. The server responds with the location of
   * the replaced resource. See the individual overloads for
   * details on the return type.
   */
  post(url, body, options = {}) {
    return this.request('POST', url, addBody(options, body));
  }
  /**
   * Constructs an observable that, when subscribed, causes the configured
   * `PUT` request to execute on the server. The `PUT` method replaces an existing resource
   * with a new set of values.
   * See the individual overloads for details on the return type.
   */
  put(url, body, options = {}) {
    return this.request('PUT', url, addBody(options, body));
  }
}
HttpClient.ɵfac = function HttpClient_Factory(t) {
  return new (t || HttpClient)(i0.ɵɵinject(HttpHandler));
};
HttpClient.ɵprov = /* @__PURE__ */i0.ɵɵdefineInjectable({
  token: HttpClient,
  factory: HttpClient.ɵfac
});
(function () {
  (typeof ngDevMode === "undefined" || ngDevMode) && i0.ɵsetClassMetadata(HttpClient, [{
    type: Injectable
  }], function () {
    return [{
      type: HttpHandler
    }];
  }, null);
})();
function interceptorChainEndFn(req, finalHandlerFn) {
  return finalHandlerFn(req);
}
/**
 * Constructs a `ChainedInterceptorFn` which adapts a legacy `HttpInterceptor` to the
 * `ChainedInterceptorFn` interface.
 */
function adaptLegacyInterceptorToChain(chainTailFn, interceptor) {
  return (initialRequest, finalHandlerFn) => interceptor.intercept(initialRequest, {
    handle: downstreamRequest => chainTailFn(downstreamRequest, finalHandlerFn)
  });
}
/**
 * Constructs a `ChainedInterceptorFn` which wraps and invokes a functional interceptor in the given
 * injector.
 */
function chainedInterceptorFn(chainTailFn, interceptorFn, injector) {
  // clang-format off
  return (initialRequest, finalHandlerFn) => injector.runInContext(() => interceptorFn(initialRequest, downstreamRequest => chainTailFn(downstreamRequest, finalHandlerFn)));
  // clang-format on
}
/**
 * A multi-provider token that represents the array of registered
 * `HttpInterceptor` objects.
 *
 * @publicApi
 */
const HTTP_INTERCEPTORS = new InjectionToken('HTTP_INTERCEPTORS');
/**
 * A multi-provided token of `HttpInterceptorFn`s.
 */
const HTTP_INTERCEPTOR_FNS = new InjectionToken('HTTP_INTERCEPTOR_FNS');
/**
 * Creates an `HttpInterceptorFn` which lazily initializes an interceptor chain from the legacy
 * class-based interceptors and runs the request through it.
 */
function legacyInterceptorFnFactory() {
  let chain = null;
  return (req, handler) => {
    if (chain === null) {
      const interceptors = inject(HTTP_INTERCEPTORS, {
        optional: true
      }) ?? [];
      // Note: interceptors are wrapped right-to-left so that final execution order is
      // left-to-right. That is, if `interceptors` is the array `[a, b, c]`, we want to
      // produce a chain that is conceptually `c(b(a(end)))`, which we build from the inside
      // out.
      chain = interceptors.reduceRight(adaptLegacyInterceptorToChain, interceptorChainEndFn);
    }
    return chain(req, handler);
  };
}
class HttpInterceptorHandler extends HttpHandler {
  constructor(backend, injector) {
    super();
    this.backend = backend;
    this.injector = injector;
    this.chain = null;
  }
  handle(initialRequest) {
    if (this.chain === null) {
      const dedupedInterceptorFns = Array.from(new Set(this.injector.get(HTTP_INTERCEPTOR_FNS)));
      // Note: interceptors are wrapped right-to-left so that final execution order is
      // left-to-right. That is, if `dedupedInterceptorFns` is the array `[a, b, c]`, we want to
      // produce a chain that is conceptually `c(b(a(end)))`, which we build from the inside
      // out.
      this.chain = dedupedInterceptorFns.reduceRight((nextSequencedFn, interceptorFn) => chainedInterceptorFn(nextSequencedFn, interceptorFn, this.injector), interceptorChainEndFn);
    }
    return this.chain(initialRequest, downstreamRequest => this.backend.handle(downstreamRequest));
  }
}
HttpInterceptorHandler.ɵfac = function HttpInterceptorHandler_Factory(t) {
  return new (t || HttpInterceptorHandler)(i0.ɵɵinject(HttpBackend), i0.ɵɵinject(i0.EnvironmentInjector));
};
HttpInterceptorHandler.ɵprov = /* @__PURE__ */i0.ɵɵdefineInjectable({
  token: HttpInterceptorHandler,
  factory: HttpInterceptorHandler.ɵfac
});
(function () {
  (typeof ngDevMode === "undefined" || ngDevMode) && i0.ɵsetClassMetadata(HttpInterceptorHandler, [{
    type: Injectable
  }], function () {
    return [{
      type: HttpBackend
    }, {
      type: i0.EnvironmentInjector
    }];
  }, null);
})();

// Every request made through JSONP needs a callback name that's unique across the
// whole page. Each request is assigned an id and the callback name is constructed
// from that. The next id to be assigned is tracked in a global variable here that
// is shared among all applications on the page.
let nextRequestId = 0;
/**
 * When a pending <script> is unsubscribed we'll move it to this document, so it won't be
 * executed.
 */
let foreignDocument;
// Error text given when a JSONP script is injected, but doesn't invoke the callback
// passed in its URL.
const JSONP_ERR_NO_CALLBACK = 'JSONP injected script did not invoke callback.';
// Error text given when a request is passed to the JsonpClientBackend that doesn't
// have a request method JSONP.
const JSONP_ERR_WRONG_METHOD = 'JSONP requests must use JSONP request method.';
const JSONP_ERR_WRONG_RESPONSE_TYPE = 'JSONP requests must use Json response type.';
// Error text given when a request is passed to the JsonpClientBackend that has
// headers set
const JSONP_ERR_HEADERS_NOT_SUPPORTED = 'JSONP requests do not support headers.';
/**
 * DI token/abstract type representing a map of JSONP callbacks.
 *
 * In the browser, this should always be the `window` object.
 *
 *
 */
class JsonpCallbackContext {}
/**
 * Factory function that determines where to store JSONP callbacks.
 *
 * Ordinarily JSONP callbacks are stored on the `window` object, but this may not exist
 * in test environments. In that case, callbacks are stored on an anonymous object instead.
 *
 *
 */
function jsonpCallbackContext() {
  if (typeof window === 'object') {
    return window;
  }
  return {};
}
/**
 * Processes an `HttpRequest` with the JSONP method,
 * by performing JSONP style requests.
 * @see {@link HttpHandler}
 * @see {@link HttpXhrBackend}
 *
 * @publicApi
 */
class JsonpClientBackend {
  constructor(callbackMap, document) {
    this.callbackMap = callbackMap;
    this.document = document;
    /**
     * A resolved promise that can be used to schedule microtasks in the event handlers.
     */
    this.resolvedPromise = Promise.resolve();
  }
  /**
   * Get the name of the next callback method, by incrementing the global `nextRequestId`.
   */
  nextCallback() {
    return `ng_jsonp_callback_${nextRequestId++}`;
  }
  /**
   * Processes a JSONP request and returns an event stream of the results.
   * @param req The request object.
   * @returns An observable of the response events.
   *
   */
  handle(req) {
    // Firstly, check both the method and response type. If either doesn't match
    // then the request was improperly routed here and cannot be handled.
    if (req.method !== 'JSONP') {
      throw new Error(JSONP_ERR_WRONG_METHOD);
    } else if (req.responseType !== 'json') {
      throw new Error(JSONP_ERR_WRONG_RESPONSE_TYPE);
    }
    // Check the request headers. JSONP doesn't support headers and
    // cannot set any that were supplied.
    if (req.headers.keys().length > 0) {
      throw new Error(JSONP_ERR_HEADERS_NOT_SUPPORTED);
    }
    // Everything else happens inside the Observable boundary.
    return new Observable(observer => {
      // The first step to make a request is to generate the callback name, and replace the
      // callback placeholder in the URL with the name. Care has to be taken here to ensure
      // a trailing &, if matched, gets inserted back into the URL in the correct place.
      const callback = this.nextCallback();
      const url = req.urlWithParams.replace(/=JSONP_CALLBACK(&|$)/, `=${callback}$1`);
      // Construct the <script> tag and point it at the URL.
      const node = this.document.createElement('script');
      node.src = url;
      // A JSONP request requires waiting for multiple callbacks. These variables
      // are closed over and track state across those callbacks.
      // The response object, if one has been received, or null otherwise.
      let body = null;
      // Whether the response callback has been called.
      let finished = false;
      // Set the response callback in this.callbackMap (which will be the window
      // object in the browser. The script being loaded via the <script> tag will
      // eventually call this callback.
      this.callbackMap[callback] = data => {
        // Data has been received from the JSONP script. Firstly, delete this callback.
        delete this.callbackMap[callback];
        // Set state to indicate data was received.
        body = data;
        finished = true;
      };
      // cleanup() is a utility closure that removes the <script> from the page and
      // the response callback from the window. This logic is used in both the
      // success, error, and cancellation paths, so it's extracted out for convenience.
      const cleanup = () => {
        // Remove the <script> tag if it's still on the page.
        if (node.parentNode) {
          node.parentNode.removeChild(node);
        }
        // Remove the response callback from the callbackMap (window object in the
        // browser).
        delete this.callbackMap[callback];
      };
      // onLoad() is the success callback which runs after the response callback
      // if the JSONP script loads successfully. The event itself is unimportant.
      // If something went wrong, onLoad() may run without the response callback
      // having been invoked.
      const onLoad = event => {
        // We wrap it in an extra Promise, to ensure the microtask
        // is scheduled after the loaded endpoint has executed any potential microtask itself,
        // which is not guaranteed in Internet Explorer and EdgeHTML. See issue #39496
        this.resolvedPromise.then(() => {
          // Cleanup the page.
          cleanup();
          // Check whether the response callback has run.
          if (!finished) {
            // It hasn't, something went wrong with the request. Return an error via
            // the Observable error path. All JSONP errors have status 0.
            observer.error(new HttpErrorResponse({
              url,
              status: 0,
              statusText: 'JSONP Error',
              error: new Error(JSONP_ERR_NO_CALLBACK)
            }));
            return;
          }
          // Success. body either contains the response body or null if none was
          // returned.
          observer.next(new HttpResponse({
            body,
            status: 200 /* HttpStatusCode.Ok */,
            statusText: 'OK',
            url
          }));
          // Complete the stream, the response is over.
          observer.complete();
        });
      };
      // onError() is the error callback, which runs if the script returned generates
      // a Javascript error. It emits the error via the Observable error channel as
      // a HttpErrorResponse.
      const onError = error => {
        cleanup();
        // Wrap the error in a HttpErrorResponse.
        observer.error(new HttpErrorResponse({
          error,
          status: 0,
          statusText: 'JSONP Error',
          url
        }));
      };
      // Subscribe to both the success (load) and error events on the <script> tag,
      // and add it to the page.
      node.addEventListener('load', onLoad);
      node.addEventListener('error', onError);
      this.document.body.appendChild(node);
      // The request has now been successfully sent.
      observer.next({
        type: HttpEventType.Sent
      });
      // Cancellation handler.
      return () => {
        if (!finished) {
          this.removeListeners(node);
        }
        // And finally, clean up the page.
        cleanup();
      };
    });
  }
  removeListeners(script) {
    // Issue #34818
    // Changing <script>'s ownerDocument will prevent it from execution.
    // https://html.spec.whatwg.org/multipage/scripting.html#execute-the-script-block
    if (!foreignDocument) {
      foreignDocument = this.document.implementation.createHTMLDocument();
    }
    foreignDocument.adoptNode(script);
  }
}
JsonpClientBackend.ɵfac = function JsonpClientBackend_Factory(t) {
  return new (t || JsonpClientBackend)(i0.ɵɵinject(JsonpCallbackContext), i0.ɵɵinject(DOCUMENT));
};
JsonpClientBackend.ɵprov = /* @__PURE__ */i0.ɵɵdefineInjectable({
  token: JsonpClientBackend,
  factory: JsonpClientBackend.ɵfac
});
(function () {
  (typeof ngDevMode === "undefined" || ngDevMode) && i0.ɵsetClassMetadata(JsonpClientBackend, [{
    type: Injectable
  }], function () {
    return [{
      type: JsonpCallbackContext
    }, {
      type: undefined,
      decorators: [{
        type: Inject,
        args: [DOCUMENT]
      }]
    }];
  }, null);
})();
/**
 * Identifies requests with the method JSONP and shifts them to the `JsonpClientBackend`.
 */
function jsonpInterceptorFn(req, next) {
  if (req.method === 'JSONP') {
    return inject(JsonpClientBackend).handle(req);
  }
  // Fall through for normal HTTP requests.
  return next(req);
}
/**
 * Identifies requests with the method JSONP and
 * shifts them to the `JsonpClientBackend`.
 *
 * @see {@link HttpInterceptor}
 *
 * @publicApi
 */
class JsonpInterceptor {
  constructor(injector) {
    this.injector = injector;
  }
  /**
   * Identifies and handles a given JSONP request.
   * @param initialRequest The outgoing request object to handle.
   * @param next The next interceptor in the chain, or the backend
   * if no interceptors remain in the chain.
   * @returns An observable of the event stream.
   */
  intercept(initialRequest, next) {
    return this.injector.runInContext(() => jsonpInterceptorFn(initialRequest, downstreamRequest => next.handle(downstreamRequest)));
  }
}
JsonpInterceptor.ɵfac = function JsonpInterceptor_Factory(t) {
  return new (t || JsonpInterceptor)(i0.ɵɵinject(i0.EnvironmentInjector));
};
JsonpInterceptor.ɵprov = /* @__PURE__ */i0.ɵɵdefineInjectable({
  token: JsonpInterceptor,
  factory: JsonpInterceptor.ɵfac
});
(function () {
  (typeof ngDevMode === "undefined" || ngDevMode) && i0.ɵsetClassMetadata(JsonpInterceptor, [{
    type: Injectable
  }], function () {
    return [{
      type: i0.EnvironmentInjector
    }];
  }, null);
})();
const XSSI_PREFIX = /^\)\]\}',?\n/;
/**
 * Determine an appropriate URL for the response, by checking either
 * XMLHttpRequest.responseURL or the X-Request-URL header.
 */
function getResponseUrl(xhr) {
  if ('responseURL' in xhr && xhr.responseURL) {
    return xhr.responseURL;
  }
  if (/^X-Request-URL:/m.test(xhr.getAllResponseHeaders())) {
    return xhr.getResponseHeader('X-Request-URL');
  }
  return null;
}
/**
 * Uses `XMLHttpRequest` to send requests to a backend server.
 * @see {@link HttpHandler}
 * @see {@link JsonpClientBackend}
 *
 * @publicApi
 */
class HttpXhrBackend {
  constructor(xhrFactory) {
    this.xhrFactory = xhrFactory;
  }
  /**
   * Processes a request and returns a stream of response events.
   * @param req The request object.
   * @returns An observable of the response events.
   */
  handle(req) {
    // Quick check to give a better error message when a user attempts to use
    // HttpClient.jsonp() without installing the HttpClientJsonpModule
    if (req.method === 'JSONP') {
      throw new Error(`Attempted to construct Jsonp request without HttpClientJsonpModule installed.`);
    }
    // Everything happens on Observable subscription.
    return new Observable(observer => {
      // Start by setting up the XHR object with request method, URL, and withCredentials flag.
      const xhr = this.xhrFactory.build();
      xhr.open(req.method, req.urlWithParams);
      if (!!req.withCredentials) {
        xhr.withCredentials = true;
      }
      // Add all the requested headers.
      req.headers.forEach((name, values) => xhr.setRequestHeader(name, values.join(',')));
      // Add an Accept header if one isn't present already.
      if (!req.headers.has('Accept')) {
        xhr.setRequestHeader('Accept', 'application/json, text/plain, */*');
      }
      // Auto-detect the Content-Type header if one isn't present already.
      if (!req.headers.has('Content-Type')) {
        const detectedType = req.detectContentTypeHeader();
        // Sometimes Content-Type detection fails.
        if (detectedType !== null) {
          xhr.setRequestHeader('Content-Type', detectedType);
        }
      }
      // Set the responseType if one was requested.
      if (req.responseType) {
        const responseType = req.responseType.toLowerCase();
        // JSON responses need to be processed as text. This is because if the server
        // returns an XSSI-prefixed JSON response, the browser will fail to parse it,
        // xhr.response will be null, and xhr.responseText cannot be accessed to
        // retrieve the prefixed JSON data in order to strip the prefix. Thus, all JSON
        // is parsed by first requesting text and then applying JSON.parse.
        xhr.responseType = responseType !== 'json' ? responseType : 'text';
      }
      // Serialize the request body if one is present. If not, this will be set to null.
      const reqBody = req.serializeBody();
      // If progress events are enabled, response headers will be delivered
      // in two events - the HttpHeaderResponse event and the full HttpResponse
      // event. However, since response headers don't change in between these
      // two events, it doesn't make sense to parse them twice. So headerResponse
      // caches the data extracted from the response whenever it's first parsed,
      // to ensure parsing isn't duplicated.
      let headerResponse = null;
      // partialFromXhr extracts the HttpHeaderResponse from the current XMLHttpRequest
      // state, and memoizes it into headerResponse.
      const partialFromXhr = () => {
        if (headerResponse !== null) {
          return headerResponse;
        }
        const statusText = xhr.statusText || 'OK';
        // Parse headers from XMLHttpRequest - this step is lazy.
        const headers = new HttpHeaders(xhr.getAllResponseHeaders());
        // Read the response URL from the XMLHttpResponse instance and fall back on the
        // request URL.
        const url = getResponseUrl(xhr) || req.url;
        // Construct the HttpHeaderResponse and memoize it.
        headerResponse = new HttpHeaderResponse({
          headers,
          status: xhr.status,
          statusText,
          url
        });
        return headerResponse;
      };
      // Next, a few closures are defined for the various events which XMLHttpRequest can
      // emit. This allows them to be unregistered as event listeners later.
      // First up is the load event, which represents a response being fully available.
      const onLoad = () => {
        // Read response state from the memoized partial data.
        let {
          headers,
          status,
          statusText,
          url
        } = partialFromXhr();
        // The body will be read out if present.
        let body = null;
        if (status !== 204 /* HttpStatusCode.NoContent */) {
          // Use XMLHttpRequest.response if set, responseText otherwise.
          body = typeof xhr.response === 'undefined' ? xhr.responseText : xhr.response;
        }
        // Normalize another potential bug (this one comes from CORS).
        if (status === 0) {
          status = !!body ? 200 /* HttpStatusCode.Ok */ : 0;
        }
        // ok determines whether the response will be transmitted on the event or
        // error channel. Unsuccessful status codes (not 2xx) will always be errors,
        // but a successful status code can still result in an error if the user
        // asked for JSON data and the body cannot be parsed as such.
        let ok = status >= 200 && status < 300;
        // Check whether the body needs to be parsed as JSON (in many cases the browser
        // will have done that already).
        if (req.responseType === 'json' && typeof body === 'string') {
          // Save the original body, before attempting XSSI prefix stripping.
          const originalBody = body;
          body = body.replace(XSSI_PREFIX, '');
          try {
            // Attempt the parse. If it fails, a parse error should be delivered to the user.
            body = body !== '' ? JSON.parse(body) : null;
          } catch (error) {
            // Since the JSON.parse failed, it's reasonable to assume this might not have been a
            // JSON response. Restore the original body (including any XSSI prefix) to deliver
            // a better error response.
            body = originalBody;
            // If this was an error request to begin with, leave it as a string, it probably
            // just isn't JSON. Otherwise, deliver the parsing error to the user.
            if (ok) {
              // Even though the response status was 2xx, this is still an error.
              ok = false;
              // The parse error contains the text of the body that failed to parse.
              body = {
                error,
                text: body
              };
            }
          }
        }
        if (ok) {
          // A successful response is delivered on the event stream.
          observer.next(new HttpResponse({
            body,
            headers,
            status,
            statusText,
            url: url || undefined
          }));
          // The full body has been received and delivered, no further events
          // are possible. This request is complete.
          observer.complete();
        } else {
          // An unsuccessful request is delivered on the error channel.
          observer.error(new HttpErrorResponse({
            // The error in this case is the response body (error from the server).
            error: body,
            headers,
            status,
            statusText,
            url: url || undefined
          }));
        }
      };
      // The onError callback is called when something goes wrong at the network level.
      // Connection timeout, DNS error, offline, etc. These are actual errors, and are
      // transmitted on the error channel.
      const onError = error => {
        const {
          url
        } = partialFromXhr();
        const res = new HttpErrorResponse({
          error,
          status: xhr.status || 0,
          statusText: xhr.statusText || 'Unknown Error',
          url: url || undefined
        });
        observer.error(res);
      };
      // The sentHeaders flag tracks whether the HttpResponseHeaders event
      // has been sent on the stream. This is necessary to track if progress
      // is enabled since the event will be sent on only the first download
      // progress event.
      let sentHeaders = false;
      // The download progress event handler, which is only registered if
      // progress events are enabled.
      const onDownProgress = event => {
        // Send the HttpResponseHeaders event if it hasn't been sent already.
        if (!sentHeaders) {
          observer.next(partialFromXhr());
          sentHeaders = true;
        }
        // Start building the download progress event to deliver on the response
        // event stream.
        let progressEvent = {
          type: HttpEventType.DownloadProgress,
          loaded: event.loaded
        };
        // Set the total number of bytes in the event if it's available.
        if (event.lengthComputable) {
          progressEvent.total = event.total;
        }
        // If the request was for text content and a partial response is
        // available on XMLHttpRequest, include it in the progress event
        // to allow for streaming reads.
        if (req.responseType === 'text' && !!xhr.responseText) {
          progressEvent.partialText = xhr.responseText;
        }
        // Finally, fire the event.
        observer.next(progressEvent);
      };
      // The upload progress event handler, which is only registered if
      // progress events are enabled.
      const onUpProgress = event => {
        // Upload progress events are simpler. Begin building the progress
        // event.
        let progress = {
          type: HttpEventType.UploadProgress,
          loaded: event.loaded
        };
        // If the total number of bytes being uploaded is available, include
        // it.
        if (event.lengthComputable) {
          progress.total = event.total;
        }
        // Send the event.
        observer.next(progress);
      };
      // By default, register for load and error events.
      xhr.addEventListener('load', onLoad);
      xhr.addEventListener('error', onError);
      xhr.addEventListener('timeout', onError);
      xhr.addEventListener('abort', onError);
      // Progress events are only enabled if requested.
      if (req.reportProgress) {
        // Download progress is always enabled if requested.
        xhr.addEventListener('progress', onDownProgress);
        // Upload progress depends on whether there is a body to upload.
        if (reqBody !== null && xhr.upload) {
          xhr.upload.addEventListener('progress', onUpProgress);
        }
      }
      // Fire the request, and notify the event stream that it was fired.
      xhr.send(reqBody);
      observer.next({
        type: HttpEventType.Sent
      });
      // This is the return from the Observable function, which is the
      // request cancellation handler.
      return () => {
        // On a cancellation, remove all registered event listeners.
        xhr.removeEventListener('error', onError);
        xhr.removeEventListener('abort', onError);
        xhr.removeEventListener('load', onLoad);
        xhr.removeEventListener('timeout', onError);
        if (req.reportProgress) {
          xhr.removeEventListener('progress', onDownProgress);
          if (reqBody !== null && xhr.upload) {
            xhr.upload.removeEventListener('progress', onUpProgress);
          }
        }
        // Finally, abort the in-flight request.
        if (xhr.readyState !== xhr.DONE) {
          xhr.abort();
        }
      };
    });
  }
}
HttpXhrBackend.ɵfac = function HttpXhrBackend_Factory(t) {
  return new (t || HttpXhrBackend)(i0.ɵɵinject(i1.XhrFactory));
};
HttpXhrBackend.ɵprov = /* @__PURE__ */i0.ɵɵdefineInjectable({
  token: HttpXhrBackend,
  factory: HttpXhrBackend.ɵfac
});
(function () {
  (typeof ngDevMode === "undefined" || ngDevMode) && i0.ɵsetClassMetadata(HttpXhrBackend, [{
    type: Injectable
  }], function () {
    return [{
      type: i1.XhrFactory
    }];
  }, null);
})();
const XSRF_ENABLED = new InjectionToken('XSRF_ENABLED');
const XSRF_DEFAULT_COOKIE_NAME = 'XSRF-TOKEN';
const XSRF_COOKIE_NAME = new InjectionToken('XSRF_COOKIE_NAME', {
  providedIn: 'root',
  factory: () => XSRF_DEFAULT_COOKIE_NAME
});
const XSRF_DEFAULT_HEADER_NAME = 'X-XSRF-TOKEN';
const XSRF_HEADER_NAME = new InjectionToken('XSRF_HEADER_NAME', {
  providedIn: 'root',
  factory: () => XSRF_DEFAULT_HEADER_NAME
});
/**
 * Retrieves the current XSRF token to use with the next outgoing request.
 *
 * @publicApi
 */
class HttpXsrfTokenExtractor {}
/**
 * `HttpXsrfTokenExtractor` which retrieves the token from a cookie.
 */
class HttpXsrfCookieExtractor {
  constructor(doc, platform, cookieName) {
    this.doc = doc;
    this.platform = platform;
    this.cookieName = cookieName;
    this.lastCookieString = '';
    this.lastToken = null;
    /**
     * @internal for testing
     */
    this.parseCount = 0;
  }
  getToken() {
    if (this.platform === 'server') {
      return null;
    }
    const cookieString = this.doc.cookie || '';
    if (cookieString !== this.lastCookieString) {
      this.parseCount++;
      this.lastToken = ɵparseCookieValue(cookieString, this.cookieName);
      this.lastCookieString = cookieString;
    }
    return this.lastToken;
  }
}
HttpXsrfCookieExtractor.ɵfac = function HttpXsrfCookieExtractor_Factory(t) {
  return new (t || HttpXsrfCookieExtractor)(i0.ɵɵinject(DOCUMENT), i0.ɵɵinject(PLATFORM_ID), i0.ɵɵinject(XSRF_COOKIE_NAME));
};
HttpXsrfCookieExtractor.ɵprov = /* @__PURE__ */i0.ɵɵdefineInjectable({
  token: HttpXsrfCookieExtractor,
  factory: HttpXsrfCookieExtractor.ɵfac
});
(function () {
  (typeof ngDevMode === "undefined" || ngDevMode) && i0.ɵsetClassMetadata(HttpXsrfCookieExtractor, [{
    type: Injectable
  }], function () {
    return [{
      type: undefined,
      decorators: [{
        type: Inject,
        args: [DOCUMENT]
      }]
    }, {
      type: undefined,
      decorators: [{
        type: Inject,
        args: [PLATFORM_ID]
      }]
    }, {
      type: undefined,
      decorators: [{
        type: Inject,
        args: [XSRF_COOKIE_NAME]
      }]
    }];
  }, null);
})();
function xsrfInterceptorFn(req, next) {
  const lcUrl = req.url.toLowerCase();
  // Skip both non-mutating requests and absolute URLs.
  // Non-mutating requests don't require a token, and absolute URLs require special handling
  // anyway as the cookie set
  // on our origin is not the same as the token expected by another origin.
  if (!inject(XSRF_ENABLED) || req.method === 'GET' || req.method === 'HEAD' || lcUrl.startsWith('http://') || lcUrl.startsWith('https://')) {
    return next(req);
  }
  const token = inject(HttpXsrfTokenExtractor).getToken();
  const headerName = inject(XSRF_HEADER_NAME);
  // Be careful not to overwrite an existing header of the same name.
  if (token != null && !req.headers.has(headerName)) {
    req = req.clone({
      headers: req.headers.set(headerName, token)
    });
  }
  return next(req);
}
/**
 * `HttpInterceptor` which adds an XSRF token to eligible outgoing requests.
 */
class HttpXsrfInterceptor {
  constructor(injector) {
    this.injector = injector;
  }
  intercept(initialRequest, next) {
    return this.injector.runInContext(() => xsrfInterceptorFn(initialRequest, downstreamRequest => next.handle(downstreamRequest)));
  }
}
HttpXsrfInterceptor.ɵfac = function HttpXsrfInterceptor_Factory(t) {
  return new (t || HttpXsrfInterceptor)(i0.ɵɵinject(i0.EnvironmentInjector));
};
HttpXsrfInterceptor.ɵprov = /* @__PURE__ */i0.ɵɵdefineInjectable({
  token: HttpXsrfInterceptor,
  factory: HttpXsrfInterceptor.ɵfac
});
(function () {
  (typeof ngDevMode === "undefined" || ngDevMode) && i0.ɵsetClassMetadata(HttpXsrfInterceptor, [{
    type: Injectable
  }], function () {
    return [{
      type: i0.EnvironmentInjector
    }];
  }, null);
})();

/**
 * Identifies a particular kind of `HttpFeature`.
 *
 * @publicApi
 */
var HttpFeatureKind;
(function (HttpFeatureKind) {
  HttpFeatureKind[HttpFeatureKind["Interceptors"] = 0] = "Interceptors";
  HttpFeatureKind[HttpFeatureKind["LegacyInterceptors"] = 1] = "LegacyInterceptors";
  HttpFeatureKind[HttpFeatureKind["CustomXsrfConfiguration"] = 2] = "CustomXsrfConfiguration";
  HttpFeatureKind[HttpFeatureKind["NoXsrfProtection"] = 3] = "NoXsrfProtection";
  HttpFeatureKind[HttpFeatureKind["JsonpSupport"] = 4] = "JsonpSupport";
  HttpFeatureKind[HttpFeatureKind["RequestsMadeViaParent"] = 5] = "RequestsMadeViaParent";
})(HttpFeatureKind || (HttpFeatureKind = {}));
function makeHttpFeature(kind, providers) {
  return {
    ɵkind: kind,
    ɵproviders: providers
  };
}
/**
 * Configures Angular's `HttpClient` service to be available for injection.
 *
 * By default, `HttpClient` will be configured for injection with its default options for XSRF
 * protection of outgoing requests. Additional configuration options can be provided by passing
 * feature functions to `provideHttpClient`. For example, HTTP interceptors can be added using the
 * `withInterceptors(...)` feature.
 *
 * @see {@link withInterceptors}
 * @see {@link withInterceptorsFromDi}
 * @see {@link withXsrfConfiguration}
 * @see {@link withNoXsrfProtection}
 * @see {@link withJsonpSupport}
 * @see {@link withRequestsMadeViaParent}
 */
function provideHttpClient(...features) {
  if (ngDevMode) {
    const featureKinds = new Set(features.map(f => f.ɵkind));
    if (featureKinds.has(HttpFeatureKind.NoXsrfProtection) && featureKinds.has(HttpFeatureKind.CustomXsrfConfiguration)) {
      throw new Error(ngDevMode ? `Configuration error: found both withXsrfConfiguration() and withNoXsrfProtection() in the same call to provideHttpClient(), which is a contradiction.` : '');
    }
  }
  const providers = [HttpClient, HttpXhrBackend, HttpInterceptorHandler, {
    provide: HttpHandler,
    useExisting: HttpInterceptorHandler
  }, {
    provide: HttpBackend,
    useExisting: HttpXhrBackend
  }, {
    provide: HTTP_INTERCEPTOR_FNS,
    useValue: xsrfInterceptorFn,
    multi: true
  }, {
    provide: XSRF_ENABLED,
    useValue: true
  }, {
    provide: HttpXsrfTokenExtractor,
    useClass: HttpXsrfCookieExtractor
  }];
  for (const feature of features) {
    providers.push(...feature.ɵproviders);
  }
  return makeEnvironmentProviders(providers);
}
/**
 * Adds one or more functional-style HTTP interceptors to the configuration of the `HttpClient`
 * instance.
 *
 * @see {@link HttpInterceptorFn}
 * @see {@link provideHttpClient}
 * @publicApi
 */
function withInterceptors(interceptorFns) {
  return makeHttpFeature(HttpFeatureKind.Interceptors, interceptorFns.map(interceptorFn => {
    return {
      provide: HTTP_INTERCEPTOR_FNS,
      useValue: interceptorFn,
      multi: true
    };
  }));
}
const LEGACY_INTERCEPTOR_FN = new InjectionToken('LEGACY_INTERCEPTOR_FN');
/**
 * Includes class-based interceptors configured using a multi-provider in the current injector into
 * the configured `HttpClient` instance.
 *
 * Prefer `withInterceptors` and functional interceptors instead, as support for DI-provided
 * interceptors may be phased out in a later release.
 *
 * @see {@link HttpInterceptor}
 * @see {@link HTTP_INTERCEPTORS}
 * @see {@link provideHttpClient}
 */
function withInterceptorsFromDi() {
  // Note: the legacy interceptor function is provided here via an intermediate token
  // (`LEGACY_INTERCEPTOR_FN`), using a pattern which guarantees that if these providers are
  // included multiple times, all of the multi-provider entries will have the same instance of the
  // interceptor function. That way, the `HttpINterceptorHandler` will dedup them and legacy
  // interceptors will not run multiple times.
  return makeHttpFeature(HttpFeatureKind.LegacyInterceptors, [{
    provide: LEGACY_INTERCEPTOR_FN,
    useFactory: legacyInterceptorFnFactory
  }, {
    provide: HTTP_INTERCEPTOR_FNS,
    useExisting: LEGACY_INTERCEPTOR_FN,
    multi: true
  }]);
}
/**
 * Customizes the XSRF protection for the configuration of the current `HttpClient` instance.
 *
 * This feature is incompatible with the `withNoXsrfProtection` feature.
 *
 * @see {@link provideHttpClient}
 */
function withXsrfConfiguration({
  cookieName,
  headerName
}) {
  const providers = [];
  if (cookieName !== undefined) {
    providers.push({
      provide: XSRF_COOKIE_NAME,
      useValue: cookieName
    });
  }
  if (headerName !== undefined) {
    providers.push({
      provide: XSRF_HEADER_NAME,
      useValue: headerName
    });
  }
  return makeHttpFeature(HttpFeatureKind.CustomXsrfConfiguration, providers);
}
/**
 * Disables XSRF protection in the configuration of the current `HttpClient` instance.
 *
 * This feature is incompatible with the `withXsrfConfiguration` feature.
 *
 * @see {@link provideHttpClient}
 */
function withNoXsrfProtection() {
  return makeHttpFeature(HttpFeatureKind.NoXsrfProtection, [{
    provide: XSRF_ENABLED,
    useValue: false
  }]);
}
/**
 * Add JSONP support to the configuration of the current `HttpClient` instance.
 *
 * @see {@link provideHttpClient}
 */
function withJsonpSupport() {
  return makeHttpFeature(HttpFeatureKind.JsonpSupport, [JsonpClientBackend, {
    provide: JsonpCallbackContext,
    useFactory: jsonpCallbackContext
  }, {
    provide: HTTP_INTERCEPTOR_FNS,
    useValue: jsonpInterceptorFn,
    multi: true
  }]);
}
/**
 * Configures the current `HttpClient` instance to make requests via the parent injector's
 * `HttpClient` instead of directly.
 *
 * By default, `provideHttpClient` configures `HttpClient` in its injector to be an independent
 * instance. For example, even if `HttpClient` is configured in the parent injector with
 * one or more interceptors, they will not intercept requests made via this instance.
 *
 * With this option enabled, once the request has passed through the current injector's
 * interceptors, it will be delegated to the parent injector's `HttpClient` chain instead of
 * dispatched directly, and interceptors in the parent configuration will be applied to the request.
 *
 * If there are several `HttpClient` instances in the injector hierarchy, it's possible for
 * `withRequestsMadeViaParent` to be used at multiple levels, which will cause the request to
 * "bubble up" until either reaching the root level or an `HttpClient` which was not configured with
 * this option.
 *
 * @see {@link provideHttpClient}
 * @developerPreview
 */
function withRequestsMadeViaParent() {
  return makeHttpFeature(HttpFeatureKind.RequestsMadeViaParent, [{
    provide: HttpBackend,
    useFactory: () => {
      const handlerFromParent = inject(HttpHandler, {
        skipSelf: true,
        optional: true
      });
      if (ngDevMode && handlerFromParent === null) {
        throw new Error('withRequestsMadeViaParent() can only be used when the parent injector also configures HttpClient');
      }
      return handlerFromParent;
    }
  }]);
}

/**
 * Configures XSRF protection support for outgoing requests.
 *
 * For a server that supports a cookie-based XSRF protection system,
 * use directly to configure XSRF protection with the correct
 * cookie and header names.
 *
 * If no names are supplied, the default cookie name is `XSRF-TOKEN`
 * and the default header name is `X-XSRF-TOKEN`.
 *
 * @publicApi
 */
class HttpClientXsrfModule {
  /**
   * Disable the default XSRF protection.
   */
  static disable() {
    return {
      ngModule: HttpClientXsrfModule,
      providers: [withNoXsrfProtection().ɵproviders]
    };
  }
  /**
   * Configure XSRF protection.
   * @param options An object that can specify either or both
   * cookie name or header name.
   * - Cookie name default is `XSRF-TOKEN`.
   * - Header name default is `X-XSRF-TOKEN`.
   *
   */
  static withOptions(options = {}) {
    return {
      ngModule: HttpClientXsrfModule,
      providers: withXsrfConfiguration(options).ɵproviders
    };
  }
}
HttpClientXsrfModule.ɵfac = function HttpClientXsrfModule_Factory(t) {
  return new (t || HttpClientXsrfModule)();
};
HttpClientXsrfModule.ɵmod = /* @__PURE__ */i0.ɵɵdefineNgModule({
  type: HttpClientXsrfModule
});
HttpClientXsrfModule.ɵinj = /* @__PURE__ */i0.ɵɵdefineInjector({
  providers: [HttpXsrfInterceptor, {
    provide: HTTP_INTERCEPTORS,
    useExisting: HttpXsrfInterceptor,
    multi: true
  }, {
    provide: HttpXsrfTokenExtractor,
    useClass: HttpXsrfCookieExtractor
  }, withXsrfConfiguration({
    cookieName: XSRF_DEFAULT_COOKIE_NAME,
    headerName: XSRF_DEFAULT_HEADER_NAME
  }).ɵproviders, {
    provide: XSRF_ENABLED,
    useValue: true
  }]
});
(function () {
  (typeof ngDevMode === "undefined" || ngDevMode) && i0.ɵsetClassMetadata(HttpClientXsrfModule, [{
    type: NgModule,
    args: [{
      providers: [HttpXsrfInterceptor, {
        provide: HTTP_INTERCEPTORS,
        useExisting: HttpXsrfInterceptor,
        multi: true
      }, {
        provide: HttpXsrfTokenExtractor,
        useClass: HttpXsrfCookieExtractor
      }, withXsrfConfiguration({
        cookieName: XSRF_DEFAULT_COOKIE_NAME,
        headerName: XSRF_DEFAULT_HEADER_NAME
      }).ɵproviders, {
        provide: XSRF_ENABLED,
        useValue: true
      }]
    }]
  }], null, null);
})();
/**
 * Configures the [dependency injector](guide/glossary#injector) for `HttpClient`
 * with supporting services for XSRF. Automatically imported by `HttpClientModule`.
 *
 * You can add interceptors to the chain behind `HttpClient` by binding them to the
 * multiprovider for built-in [DI token](guide/glossary#di-token) `HTTP_INTERCEPTORS`.
 *
 * @publicApi
 */
class HttpClientModule {}
HttpClientModule.ɵfac = function HttpClientModule_Factory(t) {
  return new (t || HttpClientModule)();
};
HttpClientModule.ɵmod = /* @__PURE__ */i0.ɵɵdefineNgModule({
  type: HttpClientModule
});
HttpClientModule.ɵinj = /* @__PURE__ */i0.ɵɵdefineInjector({
  providers: [provideHttpClient(withInterceptorsFromDi())]
});
(function () {
  (typeof ngDevMode === "undefined" || ngDevMode) && i0.ɵsetClassMetadata(HttpClientModule, [{
    type: NgModule,
    args: [{
      /**
       * Configures the [dependency injector](guide/glossary#injector) where it is imported
       * with supporting services for HTTP communications.
       */
      providers: [provideHttpClient(withInterceptorsFromDi())]
    }]
  }], null, null);
})();
/**
 * Configures the [dependency injector](guide/glossary#injector) for `HttpClient`
 * with supporting services for JSONP.
 * Without this module, Jsonp requests reach the backend
 * with method JSONP, where they are rejected.
 *
 * @publicApi
 */
class HttpClientJsonpModule {}
HttpClientJsonpModule.ɵfac = function HttpClientJsonpModule_Factory(t) {
  return new (t || HttpClientJsonpModule)();
};
HttpClientJsonpModule.ɵmod = /* @__PURE__ */i0.ɵɵdefineNgModule({
  type: HttpClientJsonpModule
});
HttpClientJsonpModule.ɵinj = /* @__PURE__ */i0.ɵɵdefineInjector({
  providers: [withJsonpSupport().ɵproviders]
});
(function () {
  (typeof ngDevMode === "undefined" || ngDevMode) && i0.ɵsetClassMetadata(HttpClientJsonpModule, [{
    type: NgModule,
    args: [{
      providers: [withJsonpSupport().ɵproviders]
    }]
  }], null, null);
})();

/**
 * A wrapper around the `XMLHttpRequest` constructor.
 *
 * @publicApi
 * @see `XhrFactory`
 * @deprecated
 * `XhrFactory` has moved, please import `XhrFactory` from `@angular/common` instead.
 */
const XhrFactory = XhrFactory$1;

export { HTTP_INTERCEPTORS, HttpBackend, HttpClient, HttpClientJsonpModule, HttpClientModule, HttpClientXsrfModule, HttpContext, HttpContextToken, HttpErrorResponse, HttpEventType, HttpFeatureKind, HttpHandler, HttpHeaderResponse, HttpHeaders, HttpParams, HttpRequest, HttpResponse, HttpResponseBase, HttpUrlEncodingCodec, HttpXhrBackend, HttpXsrfTokenExtractor, JsonpClientBackend, JsonpInterceptor, XhrFactory, provideHttpClient, withInterceptors, withInterceptorsFromDi, withJsonpSupport, withNoXsrfProtection, withRequestsMadeViaParent, withXsrfConfiguration, HttpInterceptorHandler as ɵHttpInterceptingHandler, HttpInterceptorHandler as ɵHttpInterceptorHandler };
//# sourceMappingURL=angular-http.js.map
