/**
 * bind event type.
 *
 * fieldChanged: filed changed.
 */
export declare type BindEventType = 'fieldChanged';
/**
 * events.
 *
 * @export
 * @class Events
 */
export declare class Events {
    private maps;
    constructor();
    /**
     * subscribe event.
     *
     * @param {string} event the evnet subscribe.
     * @param {(...args: any[]) => void} handle
     * @memberof Events
     */
    on(event: string, handle: (...args: any[]) => void): void;
    /**
     * unsubscribe event.
     *
     * @param {string} event the event to unsubscribe.
     * @param {...Function[]} handles
     * @memberof Events
     */
    off(event: string, ...handles: Function[]): void;
    /**
     * emit event.
     *
     * @param {string} event event type.
     * @param {...any[]} args
     * @memberof Events
     */
    emit(event: string, ...args: any[]): void;
    static ρAnn(): any;
}