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2690 lines (2544 loc) Β· 79.3 KB
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/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.dev/license
*/
import {Injectable, Ι΅RuntimeError as RuntimeError} from '@angular/core';
import {Observable, of} from 'rxjs';
import {concatMap, filter, map} from 'rxjs/operators';
import {HttpHandler} from './backend';
import {RuntimeErrorCode} from './errors';
import {HttpHeaders} from './headers';
import {HttpParams, HttpParamsOptions} from './params';
import {HttpRequest, HttpRequestOptions} from './request';
import {HttpEvent, HttpResponse} from './response';
/**
* Common options for HttpClient requests.
*
* @publicApi 22.0
*/
export interface HttpClientCommonOptions extends Omit<HttpRequestOptions, 'headers' | 'params'> {
headers?: HttpHeaders | {[header: string]: string | string[]};
observe?: 'body' | 'events' | 'response';
params?:
| HttpParams
| {[param: string]: string | number | boolean | ReadonlyArray<string | number | boolean>};
}
/**
* 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<T>(options: HttpClientCommonOptions, body: T | null): any {
return {
body,
headers: options.headers,
context: options.context,
observe: options.observe,
params: options.params,
reportProgress: options.reportProgress,
responseType: options.responseType,
withCredentials: options.withCredentials,
credentials: options.credentials,
transferCache: options.transferCache,
timeout: options.timeout,
keepalive: options.keepalive,
priority: options.priority,
cache: options.cache,
mode: options.mode,
redirect: options.redirect,
integrity: options.integrity,
referrer: options.referrer,
referrerPolicy: options.referrerPolicy,
};
}
/**
* 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
*/
@Injectable({providedIn: 'root'})
export class HttpClient {
constructor(private handler: HttpHandler) {}
/**
* Sends an `HttpRequest` and returns a stream of `HttpEvent`s.
*
* @return An `Observable` of the response, with the response body as a stream of `HttpEvent`s.
*/
request<R>(req: HttpRequest<any>): Observable<HttpEvent<R>>;
/**
* Constructs a request that interprets the body as an `ArrayBuffer` and returns the response in
* an `ArrayBuffer`.
*
* @param method The HTTP method.
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
*
* @return An `Observable` of the response, with the response body as an `ArrayBuffer`.
*/
request(
method: string,
url: string,
options: {
body?: any;
observe?: 'body';
responseType: 'arraybuffer';
} & HttpClientCommonOptions,
): Observable<ArrayBuffer>;
/**
* Constructs a request that interprets the body as a blob and returns
* the response as a blob.
*
* @param method The HTTP method.
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the response, with the response body of type `Blob`.
*/
request(
method: string,
url: string,
options: {
body?: any;
observe?: 'body';
responseType: 'blob';
} & HttpClientCommonOptions,
): Observable<Blob>;
/**
* Constructs a request that interprets the body as a text string and
* returns a string value.
*
* @param method The HTTP method.
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the response, with the response body of type string.
*/
request(
method: string,
url: string,
options: {
body?: any;
observe?: 'body';
responseType: 'text';
} & HttpClientCommonOptions,
): Observable<string>;
/**
* Constructs a request that interprets the body as an `ArrayBuffer` and returns the
* the full event stream.
*
* @param method The HTTP method.
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the response, with the response body as an array of `HttpEvent`s for
* the request.
*/
request(
method: string,
url: string,
options: {
body?: any;
observe: 'events';
responseType: 'arraybuffer';
} & HttpClientCommonOptions,
): Observable<HttpEvent<ArrayBuffer>>;
/**
* Constructs a request that interprets the body as a `Blob` and returns
* the full event stream.
*
* @param method The HTTP method.
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of all `HttpEvent`s for the request,
* with the response body of type `Blob`.
*/
request(
method: string,
url: string,
options: {
body?: any;
observe: 'events';
responseType: 'blob';
} & HttpClientCommonOptions,
): Observable<HttpEvent<Blob>>;
/**
* Constructs a request which interprets the body as a text string and returns the full event
* stream.
*
* @param method The HTTP method.
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of all `HttpEvent`s for the request,
* with the response body of type string.
*/
request(
method: string,
url: string,
options: {
body?: any;
observe: 'events';
responseType: 'text';
} & HttpClientCommonOptions,
): Observable<HttpEvent<string>>;
/**
* Constructs a request which interprets the body as a JavaScript object and returns the full
* event stream.
*
* @param method The HTTP method.
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of all `HttpEvent`s for the request,
* with the response body of type `Object`.
*/
request(
method: string,
url: string,
options: {
body?: any;
observe: 'events';
responseType?: 'json';
} & HttpClientCommonOptions,
): Observable<HttpEvent<any>>;
/**
* Constructs a request which interprets the body as a JavaScript object and returns the full
* event stream.
*
* @param method The HTTP method.
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of all `HttpEvent`s for the request,
* with the response body of type `R`.
*/
request<R>(
method: string,
url: string,
options: {
body?: any;
observe: 'events';
responseType?: 'json';
} & HttpClientCommonOptions,
): Observable<HttpEvent<R>>;
/**
* Constructs a request which interprets the body as an `ArrayBuffer`
* and returns the full `HttpResponse`.
*
* @param method The HTTP method.
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the `HttpResponse`, with the response body as an `ArrayBuffer`.
*/
request(
method: string,
url: string,
options: {
body?: any;
observe: 'response';
responseType: 'arraybuffer';
} & HttpClientCommonOptions,
): Observable<HttpResponse<ArrayBuffer>>;
/**
* Constructs a request which interprets the body as a `Blob` and returns the full `HttpResponse`.
*
* @param method The HTTP method.
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the `HttpResponse`, with the response body of type `Blob`.
*/
request(
method: string,
url: string,
options: {
body?: any;
observe: 'response';
responseType: 'blob';
} & HttpClientCommonOptions,
): Observable<HttpResponse<Blob>>;
/**
* Constructs a request which interprets the body as a text stream and returns the full
* `HttpResponse`.
*
* @param method The HTTP method.
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the HTTP response, with the response body of type string.
*/
request(
method: string,
url: string,
options: {
body?: any;
observe: 'response';
responseType: 'text';
} & HttpClientCommonOptions,
): Observable<HttpResponse<string>>;
/**
* Constructs a request which interprets the body as a JavaScript object and returns the full
* `HttpResponse`.
*
* @param method The HTTP method.
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the full `HttpResponse`,
* with the response body of type `Object`.
*/
request(
method: string,
url: string,
options: {
body?: any;
observe: 'response';
responseType?: 'json';
} & HttpClientCommonOptions,
): Observable<HttpResponse<Object>>;
/**
* Constructs a request which interprets the body as a JavaScript object and returns
* the full `HttpResponse` with the response body in the requested type.
*
* @param method The HTTP method.
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the full `HttpResponse`, with the response body of type `R`.
*/
request<R>(
method: string,
url: string,
options: {
body?: any;
observe: 'response';
responseType?: 'json';
} & HttpClientCommonOptions,
): Observable<HttpResponse<R>>;
/**
* Constructs a request which interprets the body as a JavaScript object and returns the full
* `HttpResponse` as a JavaScript object.
*
* @param method The HTTP method.
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the `HttpResponse`, with the response body of type `Object`.
*/
request(
method: string,
url: string,
options?: {
body?: any;
observe?: 'body';
responseType?: 'json';
} & HttpClientCommonOptions,
): Observable<Object>;
/**
* Constructs a request which interprets the body as a JavaScript object
* with the response body of the requested type.
*
* @param method The HTTP method.
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the `HttpResponse`, with the response body of type `R`.
*/
request<R>(
method: string,
url: string,
options?: {
body?: any;
observe?: 'body';
responseType?: 'json';
} & HttpClientCommonOptions,
): Observable<R>;
/**
* Constructs a request where response type and requested observable are not known statically.
*
* @param method The HTTP method.
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the requested response, with body of type `any`.
*/
request(
method: string,
url: string,
options?: {
body?: any;
observe?: 'body' | 'events' | 'response';
responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';
} & HttpClientCommonOptions,
): Observable<any>;
/**
* 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: string | HttpRequest<any>,
url?: string,
options: {
body?: any;
observe?: 'body' | 'events' | 'response';
responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';
} & HttpClientCommonOptions = {},
): Observable<any> {
let req: HttpRequest<any>;
// 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: HttpHeaders | undefined = undefined;
if (options.headers instanceof HttpHeaders) {
headers = options.headers;
} else {
headers = new HttpHeaders(options.headers);
}
// Sort out parameters.
let params: HttpParams | undefined = undefined;
if (!!options.params) {
if (options.params instanceof HttpParams) {
params = options.params;
} else {
params = new HttpParams({fromObject: options.params} as HttpParamsOptions);
}
}
// Construct the request.
req = new HttpRequest(first, url!, options.body !== undefined ? options.body : null, {
headers,
context: options.context,
params,
reportProgress: options.reportProgress,
reportUploadProgress: options.reportUploadProgress,
reportDownloadProgress: options.reportDownloadProgress,
// 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,
referrer: options.referrer,
referrerPolicy: options.referrerPolicy,
integrity: options.integrity,
timeout: options.timeout,
});
}
// 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$: Observable<HttpEvent<any>> = of(req).pipe(
concatMap((req: HttpRequest<any>) => this.handler.handle(req)),
);
// If coming via the API signature which accepts a previously constructed HttpRequest,
// the only option is to get the event stream. Otherwise, return the event stream if
// that is what was requested.
if (first instanceof HttpRequest || options.observe === 'events') {
return events$;
}
// 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$: Observable<HttpResponse<any>> = <Observable<HttpResponse<any>>>(
events$.pipe(filter((event: HttpEvent<any>) => 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$.pipe(
map((res: HttpResponse<any>) => {
// Validate that the body is an ArrayBuffer.
if (res.body !== null && !(res.body instanceof ArrayBuffer)) {
throw new RuntimeError(
RuntimeErrorCode.RESPONSE_IS_NOT_AN_ARRAY_BUFFER,
ngDevMode && 'Response is not an ArrayBuffer.',
);
}
return res.body;
}),
);
case 'blob':
return res$.pipe(
map((res: HttpResponse<any>) => {
// Validate that the body is a Blob.
if (res.body !== null && !(res.body instanceof Blob)) {
throw new RuntimeError(
RuntimeErrorCode.RESPONSE_IS_NOT_A_BLOB,
ngDevMode && 'Response is not a Blob.',
);
}
return res.body;
}),
);
case 'text':
return res$.pipe(
map((res: HttpResponse<any>) => {
// Validate that the body is a string.
if (res.body !== null && typeof res.body !== 'string') {
throw new RuntimeError(
RuntimeErrorCode.RESPONSE_IS_NOT_A_STRING,
ngDevMode && 'Response is not a string.',
);
}
return res.body;
}),
);
case 'json':
default:
// No validation needed for JSON responses, as they can be of any type.
return res$.pipe(map((res: HttpResponse<any>) => 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(
RuntimeErrorCode.UNHANDLED_OBSERVE_TYPE,
ngDevMode && `Unreachable: unhandled observe type ${options.observe}}`,
);
}
}
/**
* Constructs a `DELETE` request that interprets the body as an `ArrayBuffer`
* and returns the response as an `ArrayBuffer`.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the response body as an `ArrayBuffer`.
*/
delete(
url: string,
options: {
observe?: 'body';
responseType: 'arraybuffer';
body?: any | null;
} & HttpClientCommonOptions,
): Observable<ArrayBuffer>;
/**
* Constructs a `DELETE` request that interprets the body as a `Blob` and returns
* the response as a `Blob`.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the response body as a `Blob`.
*/
delete(
url: string,
options: {
observe?: 'body';
responseType: 'blob';
body?: any | null;
} & HttpClientCommonOptions,
): Observable<Blob>;
/**
* Constructs a `DELETE` request that interprets the body as a text string and returns
* a string.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the response, with the response body of type string.
*/
delete(
url: string,
options: {
observe?: 'body';
responseType: 'text';
body?: any | null;
} & HttpClientCommonOptions,
): Observable<string>;
/**
* Constructs a `DELETE` request that interprets the body as an `ArrayBuffer`
* and returns the full event stream.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of all `HttpEvent`s for the request,
* with response body as an `ArrayBuffer`.
*/
delete(
url: string,
options: {
observe: 'events';
responseType: 'arraybuffer';
body?: any | null;
} & HttpClientCommonOptions,
): Observable<HttpEvent<ArrayBuffer>>;
/**
* Constructs a `DELETE` request that interprets the body as a `Blob`
* and returns the full event stream.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of all the `HttpEvent`s for the request, with the response body as a
* `Blob`.
*/
delete(
url: string,
options: {
observe: 'events';
responseType: 'blob';
body?: any | null;
} & HttpClientCommonOptions,
): Observable<HttpEvent<Blob>>;
/**
* Constructs a `DELETE` request that interprets the body as a text string
* and returns the full event stream.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of all `HttpEvent`s for the request, with the response
* body of type string.
*/
delete(
url: string,
options: {
observe: 'events';
responseType: 'text';
body?: any | null;
} & HttpClientCommonOptions,
): Observable<HttpEvent<string>>;
/**
* Constructs a `DELETE` request that interprets the body as JSON
* and returns the full event stream.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of all `HttpEvent`s for the request, with response body of
* type `Object`.
*/
delete(
url: string,
options: {
observe: 'events';
responseType?: 'json';
body?: any | null;
} & HttpClientCommonOptions,
): Observable<HttpEvent<Object>>;
/**
* Constructs a `DELETE`request that interprets the body as JSON
* and returns the full event stream.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of all the `HttpEvent`s for the request, with a response
* body in the requested type.
*/
delete<T>(
url: string,
options: {
observe: 'events';
responseType?: 'json';
body?: any | null;
} & HttpClientCommonOptions,
): Observable<HttpEvent<T>>;
/**
* Constructs a `DELETE` request that interprets the body as an `ArrayBuffer` and returns
* the full `HttpResponse`.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the full `HttpResponse`, with the response body as an `ArrayBuffer`.
*/
delete(
url: string,
options: {
observe: 'response';
responseType: 'arraybuffer';
body?: any | null;
} & HttpClientCommonOptions,
): Observable<HttpResponse<ArrayBuffer>>;
/**
* Constructs a `DELETE` request that interprets the body as a `Blob` and returns the full
* `HttpResponse`.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the `HttpResponse`, with the response body of type `Blob`.
*/
delete(
url: string,
options: {
observe: 'response';
responseType: 'blob';
body?: any | null;
} & HttpClientCommonOptions,
): Observable<HttpResponse<Blob>>;
/**
* Constructs a `DELETE` request that interprets the body as a text stream and
* returns the full `HttpResponse`.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the full `HttpResponse`, with the response body of type string.
*/
delete(
url: string,
options: {
observe: 'response';
responseType: 'text';
body?: any | null;
} & HttpClientCommonOptions,
): Observable<HttpResponse<string>>;
/**
* Constructs a `DELETE` request the interprets the body as a JavaScript object and returns
* the full `HttpResponse`.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the `HttpResponse`, with the response body of type `Object`.
*
*/
delete(
url: string,
options: {
observe: 'response';
responseType?: 'json';
body?: any | null;
} & HttpClientCommonOptions,
): Observable<HttpResponse<Object>>;
/**
* Constructs a `DELETE` request that interprets the body as JSON
* and returns the full `HttpResponse`.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the `HttpResponse`, with the response body of the requested type.
*/
delete<T>(
url: string,
options: {
observe: 'response';
responseType?: 'json';
body?: any | null;
} & HttpClientCommonOptions,
): Observable<HttpResponse<T>>;
/**
* Constructs a `DELETE` request that interprets the body as JSON and
* returns the response body as an object parsed from JSON.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the response, with the response body of type `Object`.
*/
delete(
url: string,
options?: {
observe?: 'body';
responseType?: 'json';
body?: any | null;
} & HttpClientCommonOptions,
): Observable<Object>;
/**
* Constructs a DELETE request that interprets the body as JSON and returns
* the response in a given type.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the `HttpResponse`, with response body in the requested type.
*/
delete<T>(
url: string,
options?: {
observe?: 'body';
responseType?: 'json';
body?: any | null;
} & HttpClientCommonOptions,
): Observable<T>;
/**
* 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: string,
options: {
observe?: 'body' | 'events' | 'response';
responseType?: 'arraybuffer' | 'blob' | 'json' | 'text';
body?: any | null;
} & HttpClientCommonOptions = {},
): Observable<any> {
return this.request<any>('DELETE', url, options as any);
}
/**
* Constructs a `GET` request that interprets the body as an `ArrayBuffer` and returns the
* response in an `ArrayBuffer`.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the response, with the response body as an `ArrayBuffer`.
*/
get(
url: string,
options: {
observe?: 'body';
responseType: 'arraybuffer';
} & HttpClientCommonOptions,
): Observable<ArrayBuffer>;
/**
* Constructs a `GET` request that interprets the body as a `Blob`
* and returns the response as a `Blob`.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the response, with the response body as a `Blob`.
*/
get(
url: string,
options: {
observe?: 'body';
responseType: 'blob';
} & HttpClientCommonOptions,
): Observable<Blob>;
/**
* Constructs a `GET` request that interprets the body as a text string
* and returns the response as a string value.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of the response, with the response body of type string.
*/
get(
url: string,
options: {
observe?: 'body';
responseType: 'text';
} & HttpClientCommonOptions,
): Observable<string>;
/**
* Constructs a `GET` request that interprets the body as an `ArrayBuffer` and returns
* the full event stream.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.
*
* @return An `Observable` of all `HttpEvent`s for the request, with the response
* body as an `ArrayBuffer`.
*/
get(
url: string,
options: {
observe: 'events';
responseType: 'arraybuffer';
} & HttpClientCommonOptions,
): Observable<HttpEvent<ArrayBuffer>>;
/**
* Constructs a `GET` request that interprets the body as a `Blob` and
* returns the full event stream.
*
* @param url The endpoint URL.
* @param options The HTTP options to send with the request.