import { LocalEvent } from "../types/local-event";
/**
 * Listeners map.
 *
 * @export
 * @interface ListenerMap
 */
export interface ListenerMap {
    [event: string]: ListenerFunction[];
}
declare type ListenerData = any;
export declare type ListenerFunction = (data?: ListenerData) => void;
/**
 * Basic implementation of an EventEmitter.
 *
 * @export
 * @abstract
 * @class EventEmitter
 */
export declare abstract class EventEmitter {
    /**
     * Add a new listener.
     *
     * @static
     * @param {LocalEvent} event Event name.
     * @param {ListenerFunction} listener Listener function.
     * @memberof EventEmitter
     */
    static on(event: LocalEvent, listener: ListenerFunction): void;
    /**
     * Remove all listeners from an event.
     *
     * @static
     * @param {LocalEvent} event Event name.
     * @memberof EventEmitter
     */
    static off(event: LocalEvent): void;
    /**
     * Trigger an event.
     *
     * @static
     * @param {LocalEvent} event Event name.
     * @param {ListenerData} [data] Event data.
     * @memberof EventEmitter
     */
    static trigger(event: LocalEvent, data?: ListenerData): void;
    private static listeners;
}
export {};