export declare type THandler = (...args: any[]) => any;
export default class EventHandlers {
    private _handlers;
    subscribe(protocol: string, event: string, handler: THandler): boolean | Error;
    unsubscribe(protocol: string, event?: string, handler?: THandler): boolean | Error;
    emit(protocol: string, event: string, ...args: any[]): boolean;
    clear(): void;
    private _validate;
}