export declare const event: {
    /**
     * @param priority the higher the prior
     */
    on<EventName extends keyof GDeventNames>(eventName: EventName, callback: (...params: GDeventNames[EventName]) => any, priority?: number): void;
    /** unregister a callback from an event */
    off<EventName extends keyof GDeventNames>(eventName: EventName, callback: (...params: GDeventNames[EventName]) => any): boolean;
    /** asynchronous error catchable event
     * will run all callbacks according to their priority
     * @param {array} paramsValidationArray
     * @returns {Object} metadata (will be passed as final argument of each event function to be modified by the different modules)
    */
    emit<EventName extends keyof GDeventNames>(eventName: EventName, ...params: GDeventNames[EventName]): Promise<{}>;
    /** SYNCHRONOUS
    */
    emitSync<EventName extends keyof GDeventNames>(eventName: EventName, ...params: GDeventNames[EventName]): {};
    registeredEvents: {
        [EventName: string]: Array<[priority: number, callback: Function]>;
    };
};
export default event;