RxJS - Multicasting Operator publishLast

publishBehaviour make use of AsyncSubject, and returns ConnectableObservable. The connect() method has to be used to subscribe to the observable created.

Example

import { interval } from 'rxjs';
import { take, publishLast} from 'rxjs/operators';

let observer = interval(1000).pipe(
   take(10),
   publishLast()
);
const subscribe_one = observer.subscribe(
   x => console.log("Value from Sub1 = "+x)
);
const subscribe_two = observer.subscribe(
   x => console.log("Value from Sub2 = "+x)
);
observer.connect();

Output

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