An empty EventManagerPlugin extension, accompanied by the EventManagerPlugins definition file so we can see how to implement it.

event_manager.d.ts

import { OpaqueToken } from 'angular2/src/core/di';
import { NgZone } from 'angular2/src/core/zone/ng_zone';
export declare const EVENT_MANAGER_PLUGINS: OpaqueToken;
export declare class EventManager {
    private _zone;
    private _plugins;
    constructor(plugins: EventManagerPlugin[], _zone: NgZone);
    addEventListener(element: HTMLElement, eventName: string, handler: Function): Function;
    addGlobalEventListener(target: string, eventName: string, handler: Function): Function;
    getZone(): NgZone;
}
export declare class EventManagerPlugin {
    manager: EventManager;
    supports(eventName: string): boolean;
    addEventListener(element: HTMLElement, eventName: string, handler: Function): Function;
    addGlobalEventListener(element: string, eventName: string, handler: Function): Function;
}

new_empty_event_manager_plugin.ts

import {EventManagerPlugin} from 'angular2/platform/common_dom';
import {Injectable} from 'angular2/core';

@Injectable()
export class MultiEventPlugin extends EventManagerPlugin {
  supports(eventName: string): boolean {
  }

  addEventListener(element: HTMLElement, eventName: string, handler: Function): Function {
  }

  addGlobalEventListener(target: string, eventName: string, handler: Function): Function {
  }
}