import { Event } from "../../event/core/event";
/**
 * Queue of pending events.
 *
 * @export
 * @abstract
 * @class EventQueue
 */
export declare abstract class EventQueue {
    /**
     * Enqueue a pending event.
     *
     * @static
     * @template T Event type.
     * @param {T} event Event to enqueue.
     * @memberof EventQueue
     */
    static enqueue<T extends Event>(event: T): void;
    /**
     * Remove the pending event from queue.
     *
     * @static
     * @memberof EventQueue
     */
    static dequeue(): void;
    /**
     * Resend pending event.
     *
     * @static
     * @return {Promise<Response>} The return of the request.
     * @memberof EventQueue
     */
    static resend(): Promise<Response>;
}