icecream-no-memory-leak-angular.js

export class AppComponent {
  onDestroy$ = new Subject();
  count = 5;

  ngOnInit () {
    this.iceCreams$ = fromEvent(window, 'resize').pipe(
      flatMap(() => fromPromise(fetchIceCreams(this.count))),
      takeUntil(this.onDestroy$)
    );
  }

  ngOnDestroy () {
    this.onDestroy$.next();
  }
}