--Child

@Output() onDatePicked = new EventEmitter<any>();

​

--Child

public pickDate(date: any): void {

    this.onDatePicked.emit(date);

}

​

--Parent

<div>

    <calendar (onDatePicked)="doSomething($event)"></calendar>

</div>

​

--Parent

public doSomething(date: any):void {

    console.log('Picked date: ', date);

}