ngZone.run

ngZonerun.ts

export class AppComponent implements OnInit {
  constructor(private ngZone: NgZone) {}
  ngOnInit() {
    // New async API is not handled by Zone, so you need to
    // use ngZone.run() to make the asynchronous operation in the angular zone
    // and trigger change detection automatically.
    this.ngZone.run(() => {
      someNewAsyncAPI(() => {
        // update the data of the component
      });
    });
  }
}