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node_modules/rxjs/operator/exhaust.d.ts

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+import { Observable } from '../Observable';
+/**
+ * Converts a higher-order Observable into a first-order Observable by dropping
+ * inner Observables while the previous inner Observable has not yet completed.
+ *
+ * <span class="informal">Flattens an Observable-of-Observables by dropping the
+ * next inner Observables while the current inner is still executing.</span>
+ *
+ * <img src="./img/exhaust.png" width="100%">
+ *
+ * `exhaust` subscribes to an Observable that emits Observables, also known as a
+ * higher-order Observable. Each time it observes one of these emitted inner
+ * Observables, the output Observable begins emitting the items emitted by that
+ * inner Observable. So far, it behaves like {@link mergeAll}. However,
+ * `exhaust` ignores every new inner Observable if the previous Observable has
+ * not yet completed. Once that one completes, it will accept and flatten the
+ * next inner Observable and repeat this process.
+ *
+ * @example <caption>Run a finite timer for each click, only if there is no currently active timer</caption>
+ * var clicks = Rx.Observable.fromEvent(document, 'click');
+ * var higherOrder = clicks.map((ev) => Rx.Observable.interval(1000).take(5));
+ * var result = higherOrder.exhaust();
+ * result.subscribe(x => console.log(x));
+ *
+ * @see {@link combineAll}
+ * @see {@link concatAll}
+ * @see {@link switch}
+ * @see {@link mergeAll}
+ * @see {@link exhaustMap}
+ * @see {@link zipAll}
+ *
+ * @return {Observable} An Observable that takes a source of Observables and propagates the first observable
+ * exclusively until it completes before subscribing to the next.
+ * @method exhaust
+ * @owner Observable
+ */
+export declare function exhaust<T>(this: Observable<T>): Observable<T>;