import { ObservableInputTuple, OperatorFunction } from '../types';
|
import { concat } from './concat';
|
|
/**
|
* Emits all of the values from the source observable, then, once it completes, subscribes
|
* to each observable source provided, one at a time, emitting all of their values, and not subscribing
|
* to the next one until it completes.
|
*
|
* `concat(a$, b$, c$)` is the same as `a$.pipe(concatWith(b$, c$))`.
|
*
|
* ## Example
|
*
|
* Listen for one mouse click, then listen for all mouse moves.
|
*
|
* ```ts
|
* import { fromEvent, map, take, concatWith } from 'rxjs';
|
*
|
* const clicks$ = fromEvent(document, 'click');
|
* const moves$ = fromEvent(document, 'mousemove');
|
*
|
* clicks$.pipe(
|
* map(() => 'click'),
|
* take(1),
|
* concatWith(
|
* moves$.pipe(
|
* map(() => 'move')
|
* )
|
* )
|
* )
|
* .subscribe(x => console.log(x));
|
*
|
* // 'click'
|
* // 'move'
|
* // 'move'
|
* // 'move'
|
* // ...
|
* ```
|
*
|
* @param otherSources Other observable sources to subscribe to, in sequence, after the original source is complete.
|
* @return A function that returns an Observable that concatenates
|
* subscriptions to the source and provided Observables subscribing to the next
|
* only once the current subscription completes.
|
*/
|
export function concatWith<T, A extends readonly unknown[]>(
|
...otherSources: [...ObservableInputTuple<A>]
|
): OperatorFunction<T, T | A[number]> {
|
return concat(...otherSources);
|
}
|
