import { IEventBus, EventCallback } from './interfaces/IEventBus';
export declare class EventBusService implements IEventBus {
    private events;
    on<T = any>(event: string, callback: EventCallback<T>): void;
    off(event: string, callback: EventCallback): void;
    emit<T = any>(event: string, data?: T): void;
    once<T = any>(event: string, callback: EventCallback<T>): void;
    clear(): void;
}