ee3.ts

@Injectable()
export class EventManager {

 constructor(@Inject(EVENT_MANAGER_PLUGINS) plugins: EventManagerPlugin[], private _zone: NgZone) {
   plugins.forEach(p => p.manager = this);
   this._plugins = plugins.slice().reverse();
 }

 addEventListener(element: HTMLElement, eventName: string, handler: Function): Function {
   const plugin = this._findPluginFor(eventName);
   return plugin.addEventListener(element, eventName, handler);
 }

 getZone(): NgZone { return this._zone; }
}