/**
 *****************************************
 * 延时执行
 *****************************************
 */
declare function delay<T>(time: number | undefined, callback?: () => T): Promise<void | T>;
/**
 *****************************************
 * 延时对象
 *****************************************
 */
declare function defer(): Promise<void>;
declare function defer(time: number): Promise<void>;
declare function defer<T>(time: number, callback: () => T): Promise<T>;
declare function defer<T>(time: number, callback: T): Promise<T>;
declare function defer<T>(callback: () => T): Promise<T>;
declare function defer<T>(callback: () => T, time: number): Promise<T>;
/**
 *****************************************
 * 抛出接口
 *****************************************
 */
export { defer, delay };
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