declare global {
    interface Window {
        onYouTubeIframeAPIReadyCallbacks: any[];
        onYouTubeIframeAPIReady: any;
        youtubeApiLoaded: boolean | undefined;
    }
}
export default class YouTubePlayer {
    private _document;
    constructor(rootElement: Document);
    addYoutubeApiCallback(callback: any): void;
    private addYoutubeApiIfNotExist;
    private applyYoutubeVideoCallbacks;
}