Angular 2 DOM Mutation Observer with Event Emmiter

index.component.js

observeDOMChanges() {
  this.observer = new MutationObserver(mutations => {
    mutations.forEach(function(mutation) {
	EventEmmiter.emit(true)
    });
  });
  var config = { attributes: true, childList: true, characterData: true };
  this.observer.observe(this.elRef.nativeElement, config);
}