source: trip-planner-front/node_modules/rxjs/internal/observable/never.d.ts

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1import { Observable } from '../Observable';
2/**
3 * An Observable that emits no items to the Observer and never completes.
4 *
5 * ![](never.png)
6 *
7 * A simple Observable that emits neither values nor errors nor the completion
8 * notification. It can be used for testing purposes or for composing with other
9 * Observables. Please note that by never emitting a complete notification, this
10 * Observable keeps the subscription from being disposed automatically.
11 * Subscriptions need to be manually disposed.
12 *
13 * ## Example
14 * ### Emit the number 7, then never emit anything else (not even complete)
15 * ```ts
16 * import { NEVER } from 'rxjs';
17 * import { startWith } from 'rxjs/operators';
18 *
19 * function info() {
20 * console.log('Will not be called');
21 * }
22 * const result = NEVER.pipe(startWith(7));
23 * result.subscribe(x => console.log(x), info, info);
24 *
25 * ```
26 *
27 * @see {@link Observable}
28 * @see {@link index/EMPTY}
29 * @see {@link of}
30 * @see {@link throwError}
31 */
32export declare const NEVER: Observable<never>;
33/**
34 * @deprecated Deprecated in favor of using {@link NEVER} constant.
35 */
36export declare function never(): Observable<never>;
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