import { StopOptions, FadeToken } from "./types";
export declare class SoundToken {
    private sourceController;
    private gainNode;
    private audioContext;
    private outputNode;
    private _isPlaying;
    private _isPaused;
    private _isMuted;
    private volume;
    private rate;
    /**
     * Time (AudioContext.currentTime) when current playback started.
     */
    /**
     * The AudioContext.currentTime when the current play session began.
     */
    /**
     * AudioContext.currentTime when current play session began.
     */
    private contextStartTime;
    /**
     * Offset (seconds) inside the media where this session began.
     */
    private startOffset;
    /**
     * Offset recorded when paused (used for resume).
     */
    private pauseOffset;
    private duration;
    private currentFade;
    constructor(audioContext: AudioContext, source: AudioBufferSourceNode | HTMLAudioElement, options?: {
        volume?: number;
        rate?: number;
        startOffset?: number;
        duration?: number;
    }, outputNode?: AudioNode);
    private emit;
    setVolume(volume: number): this;
    getVolume(): number;
    mute(): this;
    mute(muted: boolean): this;
    unmute(): this;
    isMuted(): boolean;
    pause(): this;
    resume(): this;
    isPlaying(): boolean;
    isPaused(): boolean;
    stop(options?: StopOptions): this;
    private doStop;
    setRate(rate: number): this;
    getRate(): number;
    seek(time: number): this;
    getCurrentTime(): number;
    getDuration(): number;
    fade(from: number, to: number, duration: number): FadeToken;
    on(event: string, callback: Function): this;
    off(event: string, callback: Function): this;
    once(event: string, callback: Function): this;
}