import { Observable, BehaviorSubject } from 'rxjs/Rx';
import { Track } from './track.model';
export declare class PlaylistService {
    playlistSubject: BehaviorSubject<Track[]>;
    private playlist;
    constructor();
    getPlaylist(): Observable<Track[]>;
    setPlaylist(playlist: Track[]): void;
    addTrackToPlaylist(track: Track): void;
}