import { EventHandler, EventName } from "./types";
/**
 * Event emitter class that allows subscribing to and emitting events.
 *
 * @class
 */
export declare class EventEmitter {
    /**
     * The internal emitter instance.
     */
    private emitter;
    /**
     * Creates an instance of EventEmitter.
     *
     * @constructor
     */
    constructor();
    /**
     * Subscribes to an event.
     *
     * @param {EventName} eventName - The name of the event to subscribe to.
     * @param {EventHandler} cb - The event handler callback function.
     * @returns {void}
     */
    on(eventName: EventName, cb: EventHandler): void;
    /**
     * Emits an event.
     *
     * @param {EventName} eventName - The name of the event to emit.
     * @param {unknown} [payload] - Optional payload to pass to the event handlers.
     * @returns {void}
     */
    emit: (eventName: EventName, payload?: unknown) => void;
    /**
     * Cleans up all the listeners.
     *
     * @returns {void}
     */
    cleanListeners(): void;
}
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