import { Event } from './event';
type Unsub = () => void;
export declare class EventMultiplexer<T> {
    private readonly emitter;
    private hasListeners;
    private events;
    constructor();
    get event(): Event<T>;
    add(event: Event<T>): Unsub;
    dispose(): void;
    private onFirstListenerAdd;
    private onLastListenerRemove;
    private hook;
    private unhook;
}
export {};