workspace-card/node_modules/@angular/common/fesm2022/module.mjs

/**
 * @license Angular v20.1.0
 * (c) 2010-2025 Google LLC. https://angular.io/
 * License: MIT
 */

import * as i0 from '@angular/core';
import { ɵRuntimeError as _RuntimeError, Injectable, InjectionToken, inject, NgZone, DestroyRef, ɵformatRuntimeError as _formatRuntimeError, PendingTasks, ɵConsole as _Console, runInInjectionContext, DOCUMENT, Inject, makeEnvironmentProviders, NgModule } from '@angular/core';
import { concatMap, filter, map, finalize, switchMap } from 'rxjs/operators';
import { of, Observable, from } from 'rxjs';
import { XhrFactory, parseCookieValue } from './xhr.mjs';

/**
 * 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 {
    /**
     * Internal map of lowercase header names to values.
     */
    headers;
    /**
     * Internal map of lowercased header names to the normalized
     * form of the name (the form seen first).
     */
    normalizedNames = new Map();
    /**
     * Complete the lazy initialization of this object (needed before reading).
     */
    lazyInit;
    /**
     * Queued updates to be materialized the next initialization.
     */
    lazyUpdate = null;
    /**  Constructs a new HTTP header object with the given values.*/
    constructor(headers) {
        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 value = line.slice(index + 1).trim();
                        this.addHeaderEntry(name, value);
                    }
                });
            };
        }
        else if (typeof Headers !== 'undefined' && headers instanceof Headers) {
            this.headers = new Map();
            headers.forEach((value, name) => {
                this.addHeaderEntry(name, value);
            });
        }
        else {
            this.lazyInit = () => {
                if (typeof ngDevMode === 'undefined' || ngDevMode) {
                    assertValidHeaders(headers);
                }
                this.headers = new Map();
                Object.entries(headers).forEach(([name, values]) => {
                    this.setHeaderEntries(name, values);
                });
            };
        }
    }
    /**
     * 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;
        }
    }
    addHeaderEntry(name, value) {
        const key = name.toLowerCase();
        this.maybeSetNormalizedName(name, key);
        if (this.headers.has(key)) {
            this.headers.get(key).push(value);
        }
        else {
            this.headers.set(key, [value]);
        }
    }
    setHeaderEntries(name, values) {
        const headerValues = (Array.isArray(values) ? values : [values]).map((value) => value.toString());
        const key = name.toLowerCase();
        this.headers.set(key, headerValues);
        this.maybeSetNormalizedName(name, key);
    }
    /**
     * @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 {
    map;
    encoder;
    updates = null;
    cloneFrom = null;
    constructor(options = {}) {
        this.encoder = options.encoder || new HttpUrlEncodingCodec();
        if (options.fromString) {
            if (options.fromObject) {
                throw new _RuntimeError(2805 /* RuntimeErrorCode.CANNOT_SPECIFY_BOTH_FROM_STRING_AND_FROM_OBJECT */, ngDevMode && '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 {
    defaultValue;
    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
 *
 * ```ts
 * // 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 {
    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;
}
/**
 * `Content-Type` is an HTTP header used to indicate the media type
 * (also known as MIME type) of the resource being sent to the client
 * or received from the server.
 */
const CONTENT_TYPE_HEADER = 'Content-Type';
/**
 * The `Accept` header is an HTTP request header that indicates the media types
 * (or content types) the client is willing to receive from the server.
 */
const ACCEPT_HEADER = 'Accept';
/**
 * `X-Request-URL` is a custom HTTP header used in older browser versions,
 * including Firefox (< 32), Chrome (< 37), Safari (< 8), and Internet Explorer,
 * to include the full URL of the request in cross-origin requests.
 */
const X_REQUEST_URL_HEADER = 'X-Request-URL';
/**
 * `text/plain` is a content type used to indicate that the content being
 * sent is plain text with no special formatting or structured data
 * like HTML, XML, or JSON.
 */
const TEXT_CONTENT_TYPE = 'text/plain';
/**
 * `application/json` is a content type used to indicate that the content
 * being sent is in the JSON format.
 */
const JSON_CONTENT_TYPE = 'application/json';
/**
 * `application/json, text/plain, *\/*` is a content negotiation string often seen in the
 * Accept header of HTTP requests. It indicates the types of content the client is willing
 * to accept from the server, with a preference for `application/json` and `text/plain`,
 * but also accepting any other type (*\/*).
 */
const ACCEPT_HEADER_VALUE = `${JSON_CONTENT_TYPE}, ${TEXT_CONTENT_TYPE}, */*`;
/**
 * 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 {
    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.
     */
    body = null;
    /**
     * Outgoing headers for this request.
     */
    headers;
    /**
     * Shared and mutable context that can be used by interceptors
     */
    context;
    /**
     * 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.
     *
     * Note: The `FetchBackend` doesn't support progress report on uploads.
     */
    reportProgress = false;
    /**
     * Whether this request should be sent with outgoing credentials (cookies).
     */
    withCredentials = false;
    /**
     *  The credentials mode of the request, which determines how cookies and HTTP authentication are handled.
     *  This can affect whether cookies are sent with the request, and how authentication is handled.
     */
    credentials;
    /**
     * When using the fetch implementation and set to `true`, the browser will not abort the associated request if the page that initiated it is unloaded before the request is complete.
     */
    keepalive = false;
    /**
     * Controls how the request will interact with the browser's HTTP cache.
     * This affects whether a response is retrieved from the cache, how it is stored, or if it bypasses the cache altogether.
     */
    cache;
    /**
     * Indicates the relative priority of the request. This may be used by the browser to decide the order in which requests are dispatched and resources fetched.
     */
    priority;
    /**
     * The mode of the request, which determines how the request will interact with the browser's security model.
     * This can affect things like CORS (Cross-Origin Resource Sharing) and same-origin policies.
     */
    mode;
    /**
     * The redirect mode of the request, which determines how redirects are handled.
     * This can affect whether the request follows redirects automatically, or if it fails when a redirect occurs.
     */
    redirect;
    /**
     * The expected response type of the server.
     *
     * This is used to parse the response appropriately before returning it to
     * the requestee.
     */
    responseType = 'json';
    /**
     * The outgoing HTTP request method.
     */
    method;
    /**
     * Outgoing URL parameters.
     *
     * To pass a string representation of HTTP parameters in the URL-query-string format,
     * the `HttpParamsOptions`' `fromString` may be used. For example:
     *
     * ```ts
     * new HttpParams({fromString: 'angular=awesome'})
     * ```
     */
    params;
    /**
     * The outgoing URL with all URL parameters set.
     */
    urlWithParams;
    /**
     * The HttpTransferCache option for the request
     */
    transferCache;
    /**
     * The timeout for the backend HTTP request in ms.
     */
    timeout;
    constructor(method, url, third, fourth) {
        this.url = url;
        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;
            this.keepalive = !!options.keepalive;
            // 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 (options.priority) {
                this.priority = options.priority;
            }
            if (options.cache) {
                this.cache = options.cache;
            }
            if (options.credentials) {
                this.credentials = options.credentials;
            }
            if (typeof options.timeout === 'number') {
                // XHR will ignore any value below 1. AbortSignals only accept unsigned integers.
                if (options.timeout < 1 || !Number.isInteger(options.timeout)) {
                    // TODO: create a runtime error
                    throw new Error(ngDevMode ? '`timeout` must be a positive integer value' : '');
                }
                this.timeout = options.timeout;
            }
            if (options.mode) {
                this.mode = options.mode;
            }
            if (options.redirect) {
                this.redirect = options.redirect;
            }
            // We do want to assign transferCache even if it's falsy (false is valid value)
            this.transferCache = options.transferCache;
        }
        // If no headers have been passed in, construct a new HttpHeaders instance.
        this.headers ??= new HttpHeaders();
        // If no context have been passed in, construct a new HttpContext instance.
        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 (typeof this.body === 'string' ||
            isArrayBuffer(this.body) ||
            isBlob(this.body) ||
            isFormData(this.body) ||
            isUrlSearchParams(this.body)) {
            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_CONTENT_TYPE;
        }
        // `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 JSON_CONTENT_TYPE;
        }
        // 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;
        const keepalive = update.keepalive ?? this.keepalive;
        const priority = update.priority || this.priority;
        const cache = update.cache || this.cache;
        const mode = update.mode || this.mode;
        const redirect = update.redirect || this.redirect;
        const credentials = update.credentials || this.credentials;
        // Carefully handle the transferCache to differentiate between
        // `false` and `undefined` in the update args.
        const transferCache = update.transferCache ?? this.transferCache;
        const timeout = update.timeout ?? this.timeout;
        // 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 ?? this.withCredentials;
        const reportProgress = 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,
            transferCache,
            keepalive,
            cache,
            priority,
            timeout,
            mode,
            redirect,
            credentials,
        });
    }
}

/**
 * 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.
     *
     * Note: The `FetchBackend` doesn't support progress report on uploads.
     */
    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 {
    /**
     * All response headers.
     */
    headers;
    /**
     * Response status code.
     */
    status;
    /**
     * Textual description of response status code, defaults to OK.
     *
     * Do not depend on this.
     */
    statusText;
    /**
     * URL of the resource retrieved, or null if not available.
     */
    url;
    /**
     * Whether the status code falls in the 2xx range.
     */
    ok;
    /**
     * Type of the response, narrowed to either the full response or the header.
     */
    type;
    /**
     * 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, 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);
    }
    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 {
    /**
     * The response body, or `null` if one was not returned.
     */
    body;
    /**
     * Construct a new `HttpResponse`.
     */
    constructor(init = {}) {
        super(init);
        this.body = init.body !== undefined ? init.body : null;
    }
    type = HttpEventType.Response;
    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 {
    name = 'HttpErrorResponse';
    message;
    error;
    /**
     * Errors are never okay, even when the status code is in the 2xx success range.
     */
    ok = false;
    constructor(init) {
        // Initialize with a default status of 0 / Unknown Error.
        super(init, 0, 'Unknown Error');
        // 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;
    }
}
/**
 * We use these constant to prevent pulling the whole HttpStatusCode enum
 * Those are the only ones referenced directly by the framework
 */
const HTTP_STATUS_CODE_OK = 200;
const HTTP_STATUS_CODE_NO_CONTENT = 204;
/**
 * Http status codes.
 * As per https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml
 * @publicApi
 */
var HttpStatusCode;
(function (HttpStatusCode) {
    HttpStatusCode[HttpStatusCode["Continue"] = 100] = "Continue";
    HttpStatusCode[HttpStatusCode["SwitchingProtocols"] = 101] = "SwitchingProtocols";
    HttpStatusCode[HttpStatusCode["Processing"] = 102] = "Processing";
    HttpStatusCode[HttpStatusCode["EarlyHints"] = 103] = "EarlyHints";
    HttpStatusCode[HttpStatusCode["Ok"] = 200] = "Ok";
    HttpStatusCode[HttpStatusCode["Created"] = 201] = "Created";
    HttpStatusCode[HttpStatusCode["Accepted"] = 202] = "Accepted";
    HttpStatusCode[HttpStatusCode["NonAuthoritativeInformation"] = 203] = "NonAuthoritativeInformation";
    HttpStatusCode[HttpStatusCode["NoContent"] = 204] = "NoContent";
    HttpStatusCode[HttpStatusCode["ResetContent"] = 205] = "ResetContent";
    HttpStatusCode[HttpStatusCode["PartialContent"] = 206] = "PartialContent";
    HttpStatusCode[HttpStatusCode["MultiStatus"] = 207] = "MultiStatus";
    HttpStatusCode[HttpStatusCode["AlreadyReported"] = 208] = "AlreadyReported";
    HttpStatusCode[HttpStatusCode["ImUsed"] = 226] = "ImUsed";
    HttpStatusCode[HttpStatusCode["MultipleChoices"] = 300] = "MultipleChoices";
    HttpStatusCode[HttpStatusCode["MovedPermanently"] = 301] = "MovedPermanently";
    HttpStatusCode[HttpStatusCode["Found"] = 302] = "Found";
    HttpStatusCode[HttpStatusCode["SeeOther"] = 303] = "SeeOther";
    HttpStatusCode[HttpStatusCode["NotModified"] = 304] = "NotModified";
    HttpStatusCode[HttpStatusCode["UseProxy"] = 305] = "UseProxy";
    HttpStatusCode[HttpStatusCode["Unused"] = 306] = "Unused";
    HttpStatusCode[HttpStatusCode["TemporaryRedirect"] = 307] = "TemporaryRedirect";
    HttpStatusCode[HttpStatusCode["PermanentRedirect"] = 308] = "PermanentRedirect";
    HttpStatusCode[HttpStatusCode["BadRequest"] = 400] = "BadRequest";
    HttpStatusCode[HttpStatusCode["Unauthorized"] = 401] = "Unauthorized";
    HttpStatusCode[HttpStatusCode["PaymentRequired"] = 402] = "PaymentRequired";
    HttpStatusCode[HttpStatusCode["Forbidden"] = 403] = "Forbidden";
    HttpStatusCode[HttpStatusCode["NotFound"] = 404] = "NotFound";
    HttpStatusCode[HttpStatusCode["MethodNotAllowed"] = 405] = "MethodNotAllowed";
    HttpStatusCode[HttpStatusCode["NotAcceptable"] = 406] = "NotAcceptable";
    HttpStatusCode[HttpStatusCode["ProxyAuthenticationRequired"] = 407] = "ProxyAuthenticationRequired";
    HttpStatusCode[HttpStatusCode["RequestTimeout"] = 408] = "RequestTimeout";
    HttpStatusCode[HttpStatusCode["Conflict"] = 409] = "Conflict";
    HttpStatusCode[HttpStatusCode["Gone"] = 410] = "Gone";
    HttpStatusCode[HttpStatusCode["LengthRequired"] = 411] = "LengthRequired";
    HttpStatusCode[HttpStatusCode["PreconditionFailed"] = 412] = "PreconditionFailed";
    HttpStatusCode[HttpStatusCode["PayloadTooLarge"] = 413] = "PayloadTooLarge";
    HttpStatusCode[HttpStatusCode["UriTooLong"] = 414] = "UriTooLong";
    HttpStatusCode[HttpStatusCode["UnsupportedMediaType"] = 415] = "UnsupportedMediaType";
    HttpStatusCode[HttpStatusCode["RangeNotSatisfiable"] = 416] = "RangeNotSatisfiable";
    HttpStatusCode[HttpStatusCode["ExpectationFailed"] = 417] = "ExpectationFailed";
    HttpStatusCode[HttpStatusCode["ImATeapot"] = 418] = "ImATeapot";
    HttpStatusCode[HttpStatusCode["MisdirectedRequest"] = 421] = "MisdirectedRequest";
    HttpStatusCode[HttpStatusCode["UnprocessableEntity"] = 422] = "UnprocessableEntity";
    HttpStatusCode[HttpStatusCode["Locked"] = 423] = "Locked";
    HttpStatusCode[HttpStatusCode["FailedDependency"] = 424] = "FailedDependency";
    HttpStatusCode[HttpStatusCode["TooEarly"] = 425] = "TooEarly";
    HttpStatusCode[HttpStatusCode["UpgradeRequired"] = 426] = "UpgradeRequired";
    HttpStatusCode[HttpStatusCode["PreconditionRequired"] = 428] = "PreconditionRequired";
    HttpStatusCode[HttpStatusCode["TooManyRequests"] = 429] = "TooManyRequests";
    HttpStatusCode[HttpStatusCode["RequestHeaderFieldsTooLarge"] = 431] = "RequestHeaderFieldsTooLarge";
    HttpStatusCode[HttpStatusCode["UnavailableForLegalReasons"] = 451] = "UnavailableForLegalReasons";
    HttpStatusCode[HttpStatusCode["InternalServerError"] = 500] = "InternalServerError";
    HttpStatusCode[HttpStatusCode["NotImplemented"] = 501] = "NotImplemented";
    HttpStatusCode[HttpStatusCode["BadGateway"] = 502] = "BadGateway";
    HttpStatusCode[HttpStatusCode["ServiceUnavailable"] = 503] = "ServiceUnavailable";
    HttpStatusCode[HttpStatusCode["GatewayTimeout"] = 504] = "GatewayTimeout";
    HttpStatusCode[HttpStatusCode["HttpVersionNotSupported"] = 505] = "HttpVersionNotSupported";
    HttpStatusCode[HttpStatusCode["VariantAlsoNegotiates"] = 506] = "VariantAlsoNegotiates";
    HttpStatusCode[HttpStatusCode["InsufficientStorage"] = 507] = "InsufficientStorage";
    HttpStatusCode[HttpStatusCode["LoopDetected"] = 508] = "LoopDetected";
    HttpStatusCode[HttpStatusCode["NotExtended"] = 510] = "NotExtended";
    HttpStatusCode[HttpStatusCode["NetworkAuthenticationRequired"] = 511] = "NetworkAuthenticationRequired";
})(HttpStatusCode || (HttpStatusCode = {}));

/**
 * 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,
        transferCache: options.transferCache,
        keepalive: options.keepalive,
        priority: options.priority,
        cache: options.cache,
        mode: options.mode,
        redirect: options.redirect,
    };
}
/**
 * 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
 *
 * ### HTTP Request Example
 *
 * ```ts
 *  // 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.
 * ```ts
 * this.httpClient.request('GET', this.heroesUrl + '?' + 'name=term', {responseType:'json'});
 * ```
 *
 *
 * ### JSONP Example
 * ```ts
 * requestJsonp(url, callback = 'callback') {
 *  return this.httpClient.jsonp(this.heroesURL, callback);
 * }
 * ```
 *
 * ### PATCH Example
 * ```ts
 * // 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 {
    handler;
    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,
                transferCache: options.transferCache,
                keepalive: options.keepalive,
                priority: options.priority,
                cache: options.cache,
                mode: options.mode,
                redirect: options.redirect,
                credentials: options.credentials,
            });
        }
        // 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 _RuntimeError(2806 /* RuntimeErrorCode.RESPONSE_IS_NOT_AN_ARRAY_BUFFER */, ngDevMode && 'Response is not an ArrayBuffer.');
                            }
                            return res.body;
                        }));
                    case 'blob':
                        return res$.pipe(map((res) => {
                            // Validate that the body is a Blob.
                            if (res.body !== null && !(res.body instanceof Blob)) {
                                throw new _RuntimeError(2807 /* RuntimeErrorCode.RESPONSE_IS_NOT_A_BLOB */, ngDevMode && 'Response is not a Blob.');
                            }
                            return res.body;
                        }));
                    case 'text':
                        return res$.pipe(map((res) => {
                            // Validate that the body is a string.
                            if (res.body !== null && typeof res.body !== 'string') {
                                throw new _RuntimeError(2808 /* RuntimeErrorCode.RESPONSE_IS_NOT_A_STRING */, ngDevMode && '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 _RuntimeError(2809 /* RuntimeErrorCode.UNHANDLED_OBSERVE_TYPE */, ngDevMode && `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));
    }
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpClient, deps: [{ token: HttpHandler }], target: i0.ɵɵFactoryTarget.Injectable });
    static ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpClient });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpClient, decorators: [{
            type: Injectable
        }], ctorParameters: () => [{ type: HttpHandler }] });

const XSSI_PREFIX$1 = /^\)\]\}',?\n/;
/**
 * Determine an appropriate URL for the response, by checking either
 * response url or the X-Request-URL header.
 */
function getResponseUrl$1(response) {
    if (response.url) {
        return response.url;
    }
    // stored as lowercase in the map
    const xRequestUrl = X_REQUEST_URL_HEADER.toLocaleLowerCase();
    return response.headers.get(xRequestUrl);
}
/**
 * An internal injection token to reference `FetchBackend` implementation
 * in a tree-shakable way.
 */
const FETCH_BACKEND = new InjectionToken(typeof ngDevMode === 'undefined' || ngDevMode ? 'FETCH_BACKEND' : '');
/**
 * Uses `fetch` to send requests to a backend server.
 *
 * This `FetchBackend` requires the support of the
 * [Fetch API](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API) which is available on all
 * supported browsers and on Node.js v18 or later.
 *
 * @see {@link HttpHandler}
 *
 * @publicApi
 */
class FetchBackend {
    // We use an arrow function to always reference the current global implementation of `fetch`.
    // This is helpful for cases when the global `fetch` implementation is modified by external code,
    // see https://github.com/angular/angular/issues/57527.
    fetchImpl = inject(FetchFactory, { optional: true })?.fetch ?? ((...args) => globalThis.fetch(...args));
    ngZone = inject(NgZone);
    destroyRef = inject(DestroyRef);
    destroyed = false;
    constructor() {
        this.destroyRef.onDestroy(() => {
            this.destroyed = true;
        });
    }
    handle(request) {
        return new Observable((observer) => {
            const aborter = new AbortController();
            this.doRequest(request, aborter.signal, observer).then(noop, (error) => observer.error(new HttpErrorResponse({ error })));
            let timeoutId;
            if (request.timeout) {
                // TODO: Replace with AbortSignal.any([aborter.signal, AbortSignal.timeout(request.timeout)])
                // when AbortSignal.any support is Baseline widely available (NET nov. 2026)
                timeoutId = this.ngZone.runOutsideAngular(() => setTimeout(() => {
                    if (!aborter.signal.aborted) {
                        aborter.abort(new DOMException('signal timed out', 'TimeoutError'));
                    }
                }, request.timeout));
            }
            return () => {
                if (timeoutId !== undefined) {
                    clearTimeout(timeoutId);
                }
                aborter.abort();
            };
        });
    }
    async doRequest(request, signal, observer) {
        const init = this.createRequestInit(request);
        let response;
        try {
            // Run fetch outside of Angular zone.
            // This is due to Node.js fetch implementation (Undici) which uses a number of setTimeouts to check if
            // the response should eventually timeout which causes extra CD cycles every 500ms
            const fetchPromise = this.ngZone.runOutsideAngular(() => this.fetchImpl(request.urlWithParams, { signal, ...init }));
            // Make sure Zone.js doesn't trigger false-positive unhandled promise
            // error in case the Promise is rejected synchronously. See function
            // description for additional information.
            silenceSuperfluousUnhandledPromiseRejection(fetchPromise);
            // Send the `Sent` event before awaiting the response.
            observer.next({ type: HttpEventType.Sent });
            response = await fetchPromise;
        }
        catch (error) {
            observer.error(new HttpErrorResponse({
                error,
                status: error.status ?? 0,
                statusText: error.statusText,
                url: request.urlWithParams,
                headers: error.headers,
            }));
            return;
        }
        const headers = new HttpHeaders(response.headers);
        const statusText = response.statusText;
        const url = getResponseUrl$1(response) ?? request.urlWithParams;
        let status = response.status;
        let body = null;
        if (request.reportProgress) {
            observer.next(new HttpHeaderResponse({ headers, status, statusText, url }));
        }
        if (response.body) {
            // Read Progress
            const contentLength = response.headers.get('content-length');
            const chunks = [];
            const reader = response.body.getReader();
            let receivedLength = 0;
            let decoder;
            let partialText;
            // We have to check whether the Zone is defined in the global scope because this may be called
            // when the zone is nooped.
            const reqZone = typeof Zone !== 'undefined' && Zone.current;
            let canceled = false;
            // Perform response processing outside of Angular zone to
            // ensure no excessive change detection runs are executed
            // Here calling the async ReadableStreamDefaultReader.read() is responsible for triggering CD
            await this.ngZone.runOutsideAngular(async () => {
                while (true) {
                    // Prevent reading chunks if the app is destroyed. Otherwise, we risk doing
                    // unnecessary work or triggering side effects after teardown.
                    // This may happen if the app was explicitly destroyed before
                    // the response returned entirely.
                    if (this.destroyed) {
                        // Streams left in a pending state (due to `break` without cancel) may
                        // continue consuming or holding onto data behind the scenes.
                        // Calling `reader.cancel()` allows the browser or the underlying
                        // system to release any network or memory resources associated with the stream.
                        await reader.cancel();
                        canceled = true;
                        break;
                    }
                    const { done, value } = await reader.read();
                    if (done) {
                        break;
                    }
                    chunks.push(value);
                    receivedLength += value.length;
                    if (request.reportProgress) {
                        partialText =
                            request.responseType === 'text'
                                ? (partialText ?? '') +
                                    (decoder ??= new TextDecoder()).decode(value, { stream: true })
                                : undefined;
                        const reportProgress = () => observer.next({
                            type: HttpEventType.DownloadProgress,
                            total: contentLength ? +contentLength : undefined,
                            loaded: receivedLength,
                            partialText,
                        });
                        reqZone ? reqZone.run(reportProgress) : reportProgress();
                    }
                }
            });
            // We need to manage the canceled state — because the Streams API does not
            // expose a direct `.state` property on the reader.
            // We need to `return` because `parseBody` may not be able to parse chunks
            // that were only partially read (due to cancellation caused by app destruction).
            if (canceled) {
                observer.complete();
                return;
            }
            // Combine all chunks.
            const chunksAll = this.concatChunks(chunks, receivedLength);
            try {
                const contentType = response.headers.get(CONTENT_TYPE_HEADER) ?? '';
                body = this.parseBody(request, chunksAll, contentType);
            }
            catch (error) {
                // Body loading or parsing failed
                observer.error(new HttpErrorResponse({
                    error,
                    headers: new HttpHeaders(response.headers),
                    status: response.status,
                    statusText: response.statusText,
                    url: getResponseUrl$1(response) ?? request.urlWithParams,
                }));
                return;
            }
        }
        // Same behavior as the XhrBackend
        if (status === 0) {
            status = body ? HTTP_STATUS_CODE_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.
        const ok = status >= 200 && status < 300;
        if (ok) {
            observer.next(new HttpResponse({
                body,
                headers,
                status,
                statusText,
                url,
            }));
            // The full body has been received and delivered, no further events
            // are possible. This request is complete.
            observer.complete();
        }
        else {
            observer.error(new HttpErrorResponse({
                error: body,
                headers,
                status,
                statusText,
                url,
            }));
        }
    }
    parseBody(request, binContent, contentType) {
        switch (request.responseType) {
            case 'json':
                // stripping the XSSI when present
                const text = new TextDecoder().decode(binContent).replace(XSSI_PREFIX$1, '');
                return text === '' ? null : JSON.parse(text);
            case 'text':
                return new TextDecoder().decode(binContent);
            case 'blob':
                return new Blob([binContent], { type: contentType });
            case 'arraybuffer':
                return binContent.buffer;
        }
    }
    createRequestInit(req) {
        // We could share some of this logic with the XhrBackend
        const headers = {};
        let credentials;
        // If the request has a credentials property, use it.
        // Otherwise, if the request has withCredentials set to true, use 'include'.
        credentials = req.credentials;
        // If withCredentials is true should be set to 'include', for compatibility
        if (req.withCredentials) {
            // A warning is logged in development mode if the request has both
            (typeof ngDevMode === 'undefined' || ngDevMode) && warningOptionsMessage(req);
            credentials = 'include';
        }
        // Setting all the requested headers.
        req.headers.forEach((name, values) => (headers[name] = values.join(',')));
        // Add an Accept header if one isn't present already.
        if (!req.headers.has(ACCEPT_HEADER)) {
            headers[ACCEPT_HEADER] = ACCEPT_HEADER_VALUE;
        }
        // Auto-detect the Content-Type header if one isn't present already.
        if (!req.headers.has(CONTENT_TYPE_HEADER)) {
            const detectedType = req.detectContentTypeHeader();
            // Sometimes Content-Type detection fails.
            if (detectedType !== null) {
                headers[CONTENT_TYPE_HEADER] = detectedType;
            }
        }
        return {
            body: req.serializeBody(),
            method: req.method,
            headers,
            credentials,
            keepalive: req.keepalive,
            cache: req.cache,
            priority: req.priority,
            mode: req.mode,
            redirect: req.redirect,
        };
    }
    concatChunks(chunks, totalLength) {
        const chunksAll = new Uint8Array(totalLength);
        let position = 0;
        for (const chunk of chunks) {
            chunksAll.set(chunk, position);
            position += chunk.length;
        }
        return chunksAll;
    }
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: FetchBackend, deps: [], target: i0.ɵɵFactoryTarget.Injectable });
    static ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: FetchBackend });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: FetchBackend, decorators: [{
            type: Injectable
        }], ctorParameters: () => [] });
/**
 * Abstract class to provide a mocked implementation of `fetch()`
 */
class FetchFactory {
}
function noop() { }
function warningOptionsMessage(req) {
    if (req.credentials && req.withCredentials) {
        console.warn(_formatRuntimeError(2819 /* RuntimeErrorCode.WITH_CREDENTIALS_OVERRIDES_EXPLICIT_CREDENTIALS */, `Angular detected that a \`HttpClient\` request has both \`withCredentials: true\` and \`credentials: '${req.credentials}'\` options. The \`withCredentials\` option is overriding the explicit \`credentials\` setting to 'include'. Consider removing \`withCredentials\` and using \`credentials: '${req.credentials}'\` directly for clarity.`));
    }
}
/**
 * Zone.js treats a rejected promise that has not yet been awaited
 * as an unhandled error. This function adds a noop `.then` to make
 * sure that Zone.js doesn't throw an error if the Promise is rejected
 * synchronously.
 */
function silenceSuperfluousUnhandledPromiseRejection(promise) {
    promise.then(noop, noop);
}

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) {
    return (initialRequest, finalHandlerFn) => runInInjectionContext(injector, () => interceptorFn(initialRequest, (downstreamRequest) => chainTailFn(downstreamRequest, finalHandlerFn)));
}
/**
 * A multi-provider token that represents the array of registered
 * `HttpInterceptor` objects.
 *
 * @publicApi
 */
const HTTP_INTERCEPTORS = new InjectionToken(ngDevMode ? 'HTTP_INTERCEPTORS' : '');
/**
 * A multi-provided token of `HttpInterceptorFn`s.
 */
const HTTP_INTERCEPTOR_FNS = new InjectionToken(ngDevMode ? 'HTTP_INTERCEPTOR_FNS' : '');
/**
 * A multi-provided token of `HttpInterceptorFn`s that are only set in root.
 */
const HTTP_ROOT_INTERCEPTOR_FNS = new InjectionToken(ngDevMode ? 'HTTP_ROOT_INTERCEPTOR_FNS' : '');
// TODO(atscott): We need a larger discussion about stability and what should contribute to stability.
// Should the whole interceptor chain contribute to stability or just the backend request #55075?
// Should HttpClient contribute to stability automatically at all?
const REQUESTS_CONTRIBUTE_TO_STABILITY = new InjectionToken(ngDevMode ? 'REQUESTS_CONTRIBUTE_TO_STABILITY' : '', { providedIn: 'root', factory: () => true });
/**
 * 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);
        }
        const pendingTasks = inject(PendingTasks);
        const contributeToStability = inject(REQUESTS_CONTRIBUTE_TO_STABILITY);
        if (contributeToStability) {
            const removeTask = pendingTasks.add();
            return chain(req, handler).pipe(finalize(removeTask));
        }
        else {
            return chain(req, handler);
        }
    };
}
let fetchBackendWarningDisplayed = false;
class HttpInterceptorHandler extends HttpHandler {
    backend;
    injector;
    chain = null;
    pendingTasks = inject(PendingTasks);
    contributeToStability = inject(REQUESTS_CONTRIBUTE_TO_STABILITY);
    constructor(backend, injector) {
        super();
        this.backend = backend;
        this.injector = injector;
        // We strongly recommend using fetch backend for HTTP calls when SSR is used
        // for an application. The logic below checks if that's the case and produces
        // a warning otherwise.
        if ((typeof ngDevMode === 'undefined' || ngDevMode) && !fetchBackendWarningDisplayed) {
            // This flag is necessary because provideHttpClientTesting() overrides the backend
            // even if `withFetch()` is used within the test. When the testing HTTP backend is provided,
            // no HTTP calls are actually performed during the test, so producing a warning would be
            // misleading.
            const isTestingBackend = this.backend.isTestingBackend;
            if (typeof ngServerMode !== 'undefined' &&
                ngServerMode &&
                !(this.backend instanceof FetchBackend) &&
                !isTestingBackend) {
                fetchBackendWarningDisplayed = true;
                injector
                    .get(_Console)
                    .warn(_formatRuntimeError(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.'));
            }
        }
    }
    handle(initialRequest) {
        if (this.chain === null) {
            const dedupedInterceptorFns = Array.from(new Set([
                ...this.injector.get(HTTP_INTERCEPTOR_FNS),
                ...this.injector.get(HTTP_ROOT_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);
        }
        if (this.contributeToStability) {
            const removeTask = this.pendingTasks.add();
            return this.chain(initialRequest, (downstreamRequest) => this.backend.handle(downstreamRequest)).pipe(finalize(removeTask));
        }
        else {
            return this.chain(initialRequest, (downstreamRequest) => this.backend.handle(downstreamRequest));
        }
    }
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpInterceptorHandler, deps: [{ token: HttpBackend }, { token: i0.EnvironmentInjector }], target: i0.ɵɵFactoryTarget.Injectable });
    static ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpInterceptorHandler });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpInterceptorHandler, decorators: [{
            type: Injectable
        }], ctorParameters: () => [{ type: HttpBackend }, { type: i0.EnvironmentInjector }] });

// 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 {
    callbackMap;
    document;
    /**
     * A resolved promise that can be used to schedule microtasks in the event handlers.
     */
    resolvedPromise = Promise.resolve();
    constructor(callbackMap, document) {
        this.callbackMap = callbackMap;
        this.document = document;
    }
    /**
     * Get the name of the next callback method, by incrementing the global `nextRequestId`.
     */
    nextCallback() {
        return `ng_jsonp_callback_${nextRequestId++}`;
    }
    /**
     * Processes a JSONP request and returns an event stream of the results.
     * @param req The request object.
     * @returns An observable of the response events.
     *
     */
    handle(req) {
        // Firstly, check both the method and response type. If either doesn't match
        // then the request was improperly routed here and cannot be handled.
        if (req.method !== 'JSONP') {
            throw new _RuntimeError(2810 /* RuntimeErrorCode.JSONP_WRONG_METHOD */, ngDevMode && JSONP_ERR_WRONG_METHOD);
        }
        else if (req.responseType !== 'json') {
            throw new _RuntimeError(2811 /* RuntimeErrorCode.JSONP_WRONG_RESPONSE_TYPE */, ngDevMode && JSONP_ERR_WRONG_RESPONSE_TYPE);
        }
        // Check the request headers. JSONP doesn't support headers and
        // cannot set any that were supplied.
        if (req.headers.keys().length > 0) {
            throw new _RuntimeError(2812 /* RuntimeErrorCode.JSONP_HEADERS_NOT_SUPPORTED */, ngDevMode && JSONP_ERR_HEADERS_NOT_SUPPORTED);
        }
        // Everything else happens inside the Observable boundary.
        return new Observable((observer) => {
            // The first step to make a request is to generate the callback name, and replace the
            // callback placeholder in the URL with the name. Care has to be taken here to ensure
            // a trailing &, if matched, gets inserted back into the URL in the correct place.
            const callback = this.nextCallback();
            const url = req.urlWithParams.replace(/=JSONP_CALLBACK(&|$)/, `=${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 = () => {
                node.removeEventListener('load', onLoad);
                node.removeEventListener('error', onError);
                // Remove the <script> tag if it's still on the page.
                node.remove();
                // 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 = () => {
                // 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: HTTP_STATUS_CODE_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
        foreignDocument ??= this.document.implementation.createHTMLDocument();
        foreignDocument.adoptNode(script);
    }
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: JsonpClientBackend, deps: [{ token: JsonpCallbackContext }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable });
    static ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: JsonpClientBackend });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: JsonpClientBackend, decorators: [{
            type: Injectable
        }], ctorParameters: () => [{ type: JsonpCallbackContext }, { type: undefined, decorators: [{
                    type: Inject,
                    args: [DOCUMENT]
                }] }] });
/**
 * 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 {
    injector;
    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 runInInjectionContext(this.injector, () => jsonpInterceptorFn(initialRequest, (downstreamRequest) => next.handle(downstreamRequest)));
    }
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: JsonpInterceptor, deps: [{ token: i0.EnvironmentInjector }], target: i0.ɵɵFactoryTarget.Injectable });
    static ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: JsonpInterceptor });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: JsonpInterceptor, decorators: [{
            type: Injectable
        }], ctorParameters: () => [{ type: i0.EnvironmentInjector }] });

const XSSI_PREFIX = /^\)\]\}',?\n/;
const X_REQUEST_URL_REGEXP = RegExp(`^${X_REQUEST_URL_HEADER}:`, 'm');
/**
 * Determine an appropriate URL for the response, by checking either
 * XMLHttpRequest.responseURL or the X-Request-URL header.
 */
function getResponseUrl(xhr) {
    if ('responseURL' in xhr && xhr.responseURL) {
        return xhr.responseURL;
    }
    if (X_REQUEST_URL_REGEXP.test(xhr.getAllResponseHeaders())) {
        return xhr.getResponseHeader(X_REQUEST_URL_HEADER);
    }
    return null;
}
/**
 * Validates whether the request is compatible with the XHR backend.
 * Show a warning if the request contains options that are not supported by XHR.
 */
function validateXhrCompatibility(req) {
    const unsupportedOptions = [
        {
            property: 'keepalive',
            errorCode: 2813 /* RuntimeErrorCode.KEEPALIVE_NOT_SUPPORTED_WITH_XHR */,
        },
        {
            property: 'cache',
            errorCode: 2814 /* RuntimeErrorCode.CACHE_NOT_SUPPORTED_WITH_XHR */,
        },
        {
            property: 'priority',
            errorCode: 2815 /* RuntimeErrorCode.PRIORITY_NOT_SUPPORTED_WITH_XHR */,
        },
        {
            property: 'mode',
            errorCode: 2816 /* RuntimeErrorCode.MODE_NOT_SUPPORTED_WITH_XHR */,
        },
        {
            property: 'redirect',
            errorCode: 2817 /* RuntimeErrorCode.REDIRECT_NOT_SUPPORTED_WITH_XHR */,
        },
        {
            property: 'credentials',
            errorCode: 2818 /* RuntimeErrorCode.CREDENTIALS_NOT_SUPPORTED_WITH_XHR */,
        },
    ];
    // Check each unsupported option and warn if present
    for (const { property, errorCode } of unsupportedOptions) {
        if (property in req) {
            console.warn(_formatRuntimeError(errorCode, `Angular detected that a \`HttpClient\` request with the \`${property}\` option was sent using XHR, which does not support it. To use the \`${property}\` option, enable Fetch API support by passing \`withFetch()\` as an argument to \`provideHttpClient()\`.`));
        }
    }
}
/**
 * Uses `XMLHttpRequest` to send requests to a backend server.
 * @see {@link HttpHandler}
 * @see {@link JsonpClientBackend}
 *
 * @publicApi
 */
class HttpXhrBackend {
    xhrFactory;
    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 _RuntimeError(-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.`);
        }
        // Validate that the request is compatible with the XHR backend.
        ngDevMode && validateXhrCompatibility(req);
        // Check whether this factory has a special function to load an XHR implementation
        // for various non-browser environments. We currently limit it to only `ServerXhr`
        // class, which needs to load an XHR implementation.
        const xhrFactory = this.xhrFactory;
        const source = 
        // Note that `ɵloadImpl` is never defined in client bundles and can be
        // safely dropped whenever we're running in the browser.
        // This branching is redundant.
        // The `ngServerMode` guard also enables tree-shaking of the `from()`
        // function from the common bundle, as it's only used in server code.
        typeof ngServerMode !== 'undefined' && ngServerMode && xhrFactory.ɵloadImpl
            ? from(xhrFactory.ɵloadImpl())
            : of(null);
        return source.pipe(switchMap(() => {
            // 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 = 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_HEADER)) {
                    xhr.setRequestHeader(ACCEPT_HEADER, ACCEPT_HEADER_VALUE);
                }
                // Auto-detect the Content-Type header if one isn't present already.
                if (!req.headers.has(CONTENT_TYPE_HEADER)) {
                    const detectedType = req.detectContentTypeHeader();
                    // Sometimes Content-Type detection fails.
                    if (detectedType !== null) {
                        xhr.setRequestHeader(CONTENT_TYPE_HEADER, detectedType);
                    }
                }
                if (req.timeout) {
                    xhr.timeout = req.timeout;
                }
                // 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 !== HTTP_STATUS_CODE_NO_CONTENT) {
                        // 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 ? HTTP_STATUS_CODE_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);
                };
                let onTimeout = onError;
                if (req.timeout) {
                    onTimeout = (_) => {
                        const { url } = partialFromXhr();
                        const res = new HttpErrorResponse({
                            error: new DOMException('Request timed out', 'TimeoutError'),
                            status: xhr.status || 0,
                            statusText: xhr.statusText || 'Request timeout',
                            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', onTimeout);
                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', onTimeout);
                    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();
                    }
                };
            });
        }));
    }
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpXhrBackend, deps: [{ token: XhrFactory }], target: i0.ɵɵFactoryTarget.Injectable });
    static ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpXhrBackend });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpXhrBackend, decorators: [{
            type: Injectable
        }], ctorParameters: () => [{ type: XhrFactory }] });

const XSRF_ENABLED = new InjectionToken(ngDevMode ? 'XSRF_ENABLED' : '');
const XSRF_DEFAULT_COOKIE_NAME = 'XSRF-TOKEN';
const XSRF_COOKIE_NAME = new InjectionToken(ngDevMode ? 'XSRF_COOKIE_NAME' : '', {
    providedIn: 'root',
    factory: () => XSRF_DEFAULT_COOKIE_NAME,
});
const XSRF_DEFAULT_HEADER_NAME = 'X-XSRF-TOKEN';
const XSRF_HEADER_NAME = new InjectionToken(ngDevMode ? '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 {
    doc;
    cookieName;
    lastCookieString = '';
    lastToken = null;
    /**
     * @internal for testing
     */
    parseCount = 0;
    constructor(doc, cookieName) {
        this.doc = doc;
        this.cookieName = cookieName;
    }
    getToken() {
        if (typeof ngServerMode !== 'undefined' && ngServerMode) {
            return null;
        }
        const cookieString = this.doc.cookie || '';
        if (cookieString !== this.lastCookieString) {
            this.parseCount++;
            this.lastToken = parseCookieValue(cookieString, this.cookieName);
            this.lastCookieString = cookieString;
        }
        return this.lastToken;
    }
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpXsrfCookieExtractor, deps: [{ token: DOCUMENT }, { token: XSRF_COOKIE_NAME }], target: i0.ɵɵFactoryTarget.Injectable });
    static ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpXsrfCookieExtractor });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpXsrfCookieExtractor, decorators: [{
            type: Injectable
        }], ctorParameters: () => [{ type: undefined, decorators: [{
                    type: Inject,
                    args: [DOCUMENT]
                }] }, { type: undefined, decorators: [{
                    type: Inject,
                    args: [XSRF_COOKIE_NAME]
                }] }] });
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 {
    injector;
    constructor(injector) {
        this.injector = injector;
    }
    intercept(initialRequest, next) {
        return runInInjectionContext(this.injector, () => xsrfInterceptorFn(initialRequest, (downstreamRequest) => next.handle(downstreamRequest)));
    }
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpXsrfInterceptor, deps: [{ token: i0.EnvironmentInjector }], target: i0.ɵɵFactoryTarget.Injectable });
    static ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpXsrfInterceptor });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpXsrfInterceptor, decorators: [{
            type: Injectable
        }], ctorParameters: () => [{ type: i0.EnvironmentInjector }] });

/**
 * 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["Fetch"] = 6] = "Fetch";
})(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.
 *
 * <div class="docs-alert docs-alert-helpful">
 *
 * It's strongly recommended to enable
 * [`fetch`](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API) for applications that use
 * Server-Side Rendering for better performance and compatibility. To enable `fetch`, add
 * `withFetch()` feature to the `provideHttpClient()` call at the root of the application:
 *
 * ```ts
 * provideHttpClient(withFetch());
 * ```
 *
 * </div>
 *
 * @see {@link withInterceptors}
 * @see {@link withInterceptorsFromDi}
 * @see {@link withXsrfConfiguration}
 * @see {@link withNoXsrfProtection}
 * @see {@link withJsonpSupport}
 * @see {@link withRequestsMadeViaParent}
 * @see {@link withFetch}
 */
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,
            useFactory: () => {
                return inject(FETCH_BACKEND, { optional: true }) ?? inject(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(ngDevMode ? '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}
 * @publicApi 19.0
 */
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 the current `HttpClient` instance to make requests using the fetch API.
 *
 * Note: The Fetch API doesn't support progress report on uploads.
 *
 * @publicApi
 */
function withFetch() {
    return makeHttpFeature(HttpFeatureKind.Fetch, [
        FetchBackend,
        { provide: FETCH_BACKEND, useExisting: FetchBackend },
        { provide: HttpBackend, useExisting: FetchBackend },
    ]);
}

/**
 * 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
 * @deprecated Use withXsrfConfiguration({cookieName: 'XSRF-TOKEN', headerName: 'X-XSRF-TOKEN'}) as
 *     providers instead or `withNoXsrfProtection` if you want to disabled XSRF protection.
 */
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,
        };
    }
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpClientXsrfModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });
    static ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: "14.0.0", version: "20.1.0", ngImport: i0, type: HttpClientXsrfModule });
    static ɵinj = i0.ɵɵngDeclareInjector({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpClientXsrfModule, 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 },
        ] });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpClientXsrfModule, decorators: [{
            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 },
                    ],
                }]
        }] });
/**
 * Configures the dependency 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 `HTTP_INTERCEPTORS`.
 *
 * @publicApi
 * @deprecated use `provideHttpClient(withInterceptorsFromDi())` as providers instead
 */
class HttpClientModule {
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpClientModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });
    static ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: "14.0.0", version: "20.1.0", ngImport: i0, type: HttpClientModule });
    static ɵinj = i0.ɵɵngDeclareInjector({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpClientModule, providers: [provideHttpClient(withInterceptorsFromDi())] });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpClientModule, decorators: [{
            type: NgModule,
            args: [{
                    /**
                     * Configures the dependency injector where it is imported
                     * with supporting services for HTTP communications.
                     */
                    providers: [provideHttpClient(withInterceptorsFromDi())],
                }]
        }] });
/**
 * Configures the dependency injector for `HttpClient`
 * with supporting services for JSONP.
 * Without this module, Jsonp requests reach the backend
 * with method JSONP, where they are rejected.
 *
 * @publicApi
 * @deprecated `withJsonpSupport()` as providers instead
 */
class HttpClientJsonpModule {
    static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpClientJsonpModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });
    static ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: "14.0.0", version: "20.1.0", ngImport: i0, type: HttpClientJsonpModule });
    static ɵinj = i0.ɵɵngDeclareInjector({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpClientJsonpModule, providers: [withJsonpSupport().ɵproviders] });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "20.1.0", ngImport: i0, type: HttpClientJsonpModule, decorators: [{
            type: NgModule,
            args: [{
                    providers: [withJsonpSupport().ɵproviders],
                }]
        }] });

export { FetchBackend, HTTP_INTERCEPTORS, HTTP_ROOT_INTERCEPTOR_FNS, HttpBackend, HttpClient, HttpClientJsonpModule, HttpClientModule, HttpClientXsrfModule, HttpContext, HttpContextToken, HttpErrorResponse, HttpEventType, HttpFeatureKind, HttpHandler, HttpHeaderResponse, HttpHeaders, HttpInterceptorHandler, HttpParams, HttpRequest, HttpResponse, HttpResponseBase, HttpStatusCode, HttpUrlEncodingCodec, HttpXhrBackend, HttpXsrfTokenExtractor, JsonpClientBackend, JsonpInterceptor, REQUESTS_CONTRIBUTE_TO_STABILITY, provideHttpClient, withFetch, withInterceptors, withInterceptorsFromDi, withJsonpSupport, withNoXsrfProtection, withRequestsMadeViaParent, withXsrfConfiguration };
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