export type ListenerFn<T extends any[] = any[]> = (...args: T) => void;
export default class EventBus<T extends ListenerFn = ListenerFn> {
    private listeners;
    constructor();
    register(listener: T): void;
    unregister(listener: T): void;
    isRegistered(listener: T): boolean;
    broadcast(...args: Parameters<T>): void;
}