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- import { Observable } from '../Observable';
- /**
- * An Observable that emits no items to the Observer and never completes.
- *
- * ![](never.png)
- *
- * A simple Observable that emits neither values nor errors nor the completion
- * notification. It can be used for testing purposes or for composing with other
- * Observables. Please note that by never emitting a complete notification, this
- * Observable keeps the subscription from being disposed automatically.
- * Subscriptions need to be manually disposed.
- *
- * ## Example
- * ### Emit the number 7, then never emit anything else (not even complete)
- * ```ts
- * import { NEVER } from 'rxjs';
- * import { startWith } from 'rxjs/operators';
- *
- * function info() {
- * console.log('Will not be called');
- * }
- * const result = NEVER.pipe(startWith(7));
- * result.subscribe(x => console.log(x), info, info);
- *
- * ```
- *
- * @see {@link Observable}
- * @see {@link index/EMPTY}
- * @see {@link of}
- * @see {@link throwError}
- */
- export declare const NEVER: Observable<never>;
- /**
- * @deprecated Deprecated in favor of using {@link NEVER} constant.
- */
- export declare function never(): Observable<never>;
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