/// <reference types="node" />
import { EventEmitter } from 'events';
import { Writable } from 'stream';
import { Playlist } from './Playlist';
export declare class QueueStream {
    playlist: Playlist;
    private current;
    private eventBus;
    private trackStream;
    private prebuffer;
    private folders;
    constructor();
    getPrebuffer: () => Buffer;
    currentPipe: (wrstr: Writable, opts?: {}) => Writable;
    next: () => void;
    addFolder(folder: string): void;
    start(): void;
    on(event: string, listener: (...args: any[]) => void): EventEmitter;
    private restart;
}