export declare function on(key: string, value: (rest?: any) => void): void;
export declare function once(key: string, value: (rest?: any) => void): void;
export declare function trigger(key: string, ...rest: any[]): void;
export declare function remove(key: any): void;
export declare function setMaxCache(num: number): void;
export declare function getMaxCache(): number;
export declare function watchCache(): Map<any, any>;
declare const _default: {
    on: typeof on;
    once: typeof once;
    trigger: typeof trigger;
    remove: typeof remove;
    setMaxCache: typeof setMaxCache;
    getMaxCache: typeof getMaxCache;
    watchCache: typeof watchCache;
};
export default _default;