interface ISubscription {
    unsubscribe: () => void;
}
interface IEventBus<S = any, P = any, R = any> {
    subscribe(subscriber: S): ISubscription;
    unsubscribe(subscriber: S): void;
    next(data: P): Promise<R>;
}
interface IAsyncEventBusSubscriber<T extends CallableFunction> {
    priority: number;
    callback: T;
}
export { IEventBus, ISubscription, IAsyncEventBusSubscriber };