export interface EventListener<T> {
    (event: T): any;
}
/**
 * Dispose event handler
 */
export declare type EventDisposable = () => void;
/**
 * Tiny Events class
 *
 * - One `Events` has one type
 * - Each event  handler has one object
 */
export declare class Events<T> {
    private listeners;
    private listenersOnce;
    addEventListener(listener: EventListener<T>): EventDisposable;
    addEventListenerOnce(listener: EventListener<T>): void;
    removeEventListener(listener: EventListener<T>): void;
    removeAllEventListeners(): void;
    emit(payload: T): void;
}