youtube.d.ts File for the youtube-iframe-api to use in Angular 2 needed

I try to use the youtube iframe api for showing and controling video snippets with a smooth angular2 integration. And respecting the type concept of typescript is important to the webpack compiler and me :).

The quick setup of my tests:

use @angular/cli (Version 1.0.0-beta.32.3) to setup and install the ng2-youtube-player and then two small adjustments:

ng new test002cd test002npm install ng2-youtube-player --save-dev

The app.module was extended according to ng2-youtube-player, but in the app.component I had a small correction and an error:

import { Component } from '@angular/core';@Component({    selector: 'app-root',// app renamed to app-root    template: `<youtube-player      [videoId]="id"      (ready)="savePlayer($event)"      (change)="onStateChange($event)"></youtube-player>    `})export class AppComponent {  player: YT.Player;// Error: Cannot find namespace 'YT'  private id: string = 'qDuKsiwS5xw';    savePlayer (player) {    this.player = player;    console.log('player instance', player)    }  onStateChange(event){    console.log('player state', event.data);  }}

For the error I faked the namespace with a youtube.d.ts file:

// dummy namespace...export as namespace YT;export interface Player {    name: string;    length: number;    extras?: string[];}

Now using ng serve the webpack is compiling without error, even if there is YT unknown within the ng2-youtube-player package.

My question after intensive search on the internet: Can someone may provide a correct .d.ts file or tell me how to find out?