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import { ObservableInputTuple, OperatorFunction } from '../types';
import { merge } from './merge';
/**
* Merge the values from all observables to a single observable result.
*
* Creates an observable, that when subscribed to, subscribes to the source
* observable, and all other sources provided as arguments. All values from
* every source are emitted from the resulting subscription.
*
* When all sources complete, the resulting observable will complete.
*
* When any source errors, the resulting observable will error.
*
* ## Example
*
* Joining all outputs from multiple user input event streams
*
* ```ts
* import { fromEvent, map, mergeWith } from 'rxjs';
*
* const clicks$ = fromEvent(document, 'click').pipe(map(() => 'click'));
* const mousemoves$ = fromEvent(document, 'mousemove').pipe(map(() => 'mousemove'));
* const dblclicks$ = fromEvent(document, 'dblclick').pipe(map(() => 'dblclick'));
*
* mousemoves$
* .pipe(mergeWith(clicks$, dblclicks$))
* .subscribe(x => console.log(x));
*
* // result (assuming user interactions)
* // 'mousemove'
* // 'mousemove'
* // 'mousemove'
* // 'click'
* // 'click'
* // 'dblclick'
* ```
*
* @see {@link merge}
*
* @param otherSources the sources to combine the current source with.
* @return A function that returns an Observable that merges the values from
* all given Observables.
*/
export function mergeWith<T, A extends readonly unknown[]>(
...otherSources: [...ObservableInputTuple<A>]
): OperatorFunction<T, T | A[number]> {
return merge(...otherSources);
}