| import { OperatorFunction, ObservableInput } from '../types'; |
| /** |
| * Converts a higher-order Observable into a first-order Observable which |
| * concurrently delivers all values that are emitted on the inner Observables. |
| * |
| * <span class="informal">Flattens an Observable-of-Observables.</span> |
| * |
| * ![](mergeAll.png) |
| * |
| * `mergeAll` subscribes to an Observable that emits Observables, also known as |
| * a higher-order Observable. Each time it observes one of these emitted inner |
| * Observables, it subscribes to that and delivers all the values from the |
| * inner Observable on the output Observable. The output Observable only |
| * completes once all inner Observables have completed. Any error delivered by |
| * a inner Observable will be immediately emitted on the output Observable. |
| * |
| * ## Examples |
| * Spawn a new interval Observable for each click event, and blend their outputs as one Observable |
| * ```ts |
| * import { fromEvent, interval } from 'rxjs'; |
| * import { map, mergeAll } from 'rxjs/operators'; |
| * |
| * const clicks = fromEvent(document, 'click'); |
| * const higherOrder = clicks.pipe(map((ev) => interval(1000))); |
| * const firstOrder = higherOrder.pipe(mergeAll()); |
| * firstOrder.subscribe(x => console.log(x)); |
| * ``` |
| * |
| * Count from 0 to 9 every second for each click, but only allow 2 concurrent timers |
| * ```ts |
| * import { fromEvent, interval } from 'rxjs'; |
| * import { take, map, mergeAll } from 'rxjs/operators'; |
| * |
| * const clicks = fromEvent(document, 'click'); |
| * const higherOrder = clicks.pipe( |
| * map((ev) => interval(1000).pipe(take(10))), |
| * ); |
| * const firstOrder = higherOrder.pipe(mergeAll(2)); |
| * firstOrder.subscribe(x => console.log(x)); |
| * ``` |
| * |
| * @see {@link combineAll} |
| * @see {@link concatAll} |
| * @see {@link exhaust} |
| * @see {@link merge} |
| * @see {@link mergeMap} |
| * @see {@link mergeMapTo} |
| * @see {@link mergeScan} |
| * @see {@link switchAll} |
| * @see {@link switchMap} |
| * @see {@link zipAll} |
| * |
| * @param {number} [concurrent=Number.POSITIVE_INFINITY] Maximum number of inner |
| * Observables being subscribed to concurrently. |
| * @return {Observable} An Observable that emits values coming from all the |
| * inner Observables emitted by the source Observable. |
| * @method mergeAll |
| * @owner Observable |
| */ |
| export declare function mergeAll<T>(concurrent?: number): OperatorFunction<ObservableInput<T>, T>; |