Event Emitter

event-emitter.ts

public class ParentComponent {
  
  handleEventFromChild($event: Event): never {
    // Do something with event...
  }
  
}

// HTML TEMPLATE IN PARENT

  <app-child-component (emitEvent)="handleEventFromChild($event)"></app-child-component>

// ============================================

public class ChildComponent {
  @Output() eventEmitter: EventEmitter<boolean> = new EventEmitter();
  
  emitEvent(): void {
    this.eventEmitter.next(true);
  }
  
}