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-rw-r--r--node_modules/rxjs/src/internal/operators/skipUntil.ts69
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-import { MonoTypeOperatorFunction, ObservableInput } from '../types';
-import { operate } from '../util/lift';
-import { createOperatorSubscriber } from './OperatorSubscriber';
-import { innerFrom } from '../observable/innerFrom';
-import { noop } from '../util/noop';
-
-/**
- * Returns an Observable that skips items emitted by the source Observable until a second Observable emits an item.
- *
- * The `skipUntil` operator causes the observable stream to skip the emission of values until the passed in observable
- * emits the first value. This can be particularly useful in combination with user interactions, responses of HTTP
- * requests or waiting for specific times to pass by.
- *
- * ![](skipUntil.png)
- *
- * Internally, the `skipUntil` operator subscribes to the passed in `notifier` `ObservableInput` (which gets converted
- * to an Observable) in order to recognize the emission of its first value. When `notifier` emits next, the operator
- * unsubscribes from it and starts emitting the values of the *source* observable until it completes or errors. It
- * will never let the *source* observable emit any values if the `notifier` completes or throws an error without
- * emitting a value before.
- *
- * ## Example
- *
- * In the following example, all emitted values of the interval observable are skipped until the user clicks anywhere
- * within the page
- *
- * ```ts
- * import { interval, fromEvent, skipUntil } from 'rxjs';
- *
- * const intervalObservable = interval(1000);
- * const click = fromEvent(document, 'click');
- *
- * const emitAfterClick = intervalObservable.pipe(
- * skipUntil(click)
- * );
- * // clicked at 4.6s. output: 5...6...7...8........ or
- * // clicked at 7.3s. output: 8...9...10..11.......
- * emitAfterClick.subscribe(value => console.log(value));
- * ```
- *
- * @see {@link last}
- * @see {@link skip}
- * @see {@link skipWhile}
- * @see {@link skipLast}
- *
- * @param notifier An `ObservableInput` that has to emit an item before the source Observable elements begin to
- * be mirrored by the resulting Observable.
- * @return A function that returns an Observable that skips items from the
- * source Observable until the `notifier` Observable emits an item, then emits the
- * remaining items.
- */
-export function skipUntil<T>(notifier: ObservableInput<any>): MonoTypeOperatorFunction<T> {
- return operate((source, subscriber) => {
- let taking = false;
-
- const skipSubscriber = createOperatorSubscriber(
- subscriber,
- () => {
- skipSubscriber?.unsubscribe();
- taking = true;
- },
- noop
- );
-
- innerFrom(notifier).subscribe(skipSubscriber);
-
- source.subscribe(createOperatorSubscriber(subscriber, (value) => taking && subscriber.next(value)));
- });
-}
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