import { Event, type EventHandler } from './event.js';
/**
 * One-time event that can be triggered only once, but listeners will be notified at the time of event or subscription, if it happens later.
 *
 * Useful for solving race conditions, when components initialization order is undetermined.
 *
 * Example usage: app initialization finished event, but some async components can subscribe later and be notified;
 * So subscribers can be sure that the main initialization is finished.
 */
export declare class OneTimeLateEvent<T = any> extends Event<T> {
    private _triggeredWith;
    private _triggered;
    trigger(data?: T): void;
    triggerAsync(data?: T): Promise<Error[]>;
    on(handler: EventHandler<T>): () => void;
    /** Allows this event to be triggered again and existing subscribers to receive it */
    reset: () => void;
}