Angular 2 – FormGroup ValueChanges Unsubscribe

The subscribe() call returns a Subscription and this is what you use to unsubscribe:

class JobToolbarComponent

  private subscr:Subscription;

  ngOnInit() {
    ...
    this.subscr = this.form.valueChanges ...
    ...
  }

  ngOnDestroy() {
    this.subscr.unsubscribe();
  }
}