import type { EventEmitter } from './EventEmitter';
type callbackType = <T>(param: {
    [data: string]: T;
}) => void;
/**
 * EventHandler class to manage event listeners for an audio context.
 */
export declare class EventHandler {
    private emitter;
    private audioCtx;
    /**
     * Creates an instance of EventHandler.
     * @param emitter - The event emitter instance to manage event listeners.
     * @param audioCtx - AudioContext instance to monitor state changes. Optional to facilitate testing.
     */
    constructor(emitter: EventEmitter, audioCtx?: AudioContext);
    /**
     * Registers a callback for the 'decoded' event.
     * @param callback - The callback to be invoked when the event occurs.
     */
    ready(callback: callbackType): void;
    /**
     * Registers a callback for the 'start' event.
     * @param callback - The callback to be invoked when the event occurs.
     */
    start(callback: callbackType): void;
    /**
     * Registers a callback for the 'end' event.
     * @param callback - The callback to be invoked when the event occurs.
     */
    end(callback: callbackType): void;
    /**
     * Monitors the state changes of the AudioContext and invokes the callback.
     * @param callback - The callback to be invoked when the AudioContext state changes.
     */
    state(callback: callbackType): void;
}
export {};