/**
 * 简单版 发布订阅
 */
type Listender = (state: any) => void;
declare class ObserverStateManagerClass {
    private listeners;
    private state;
    attach(listener: Listender): void;
    detach(listenerToRemove: Listender): void;
    update<T>(state: T): void;
    private notify;
}
export declare const ObserverStateManager: ObserverStateManagerClass;
export {};