Returns an Observable that mirrors the source Observable with the exception of a complete. If the source Observable calls complete, this method will emit to the Observable returned from notifier. If that Observable calls complete or error, then this method will call complete or error on the child subscription. Otherwise this method will resubscribe to the source Observable.

Example

Repeat a message stream on click

import { of, fromEvent, repeatWhen } from 'rxjs';

const source = of('Repeat message');
const documentClick$ = fromEvent(document, 'click');

const result = source.pipe(repeatWhen(() => documentClick$));

result.subscribe(data => console.log(data))