/**
 * 防抖函数
 * @param fn 回调函数
 * @param delay 防抖时间默认10ms
 * @returns 防抖执行的函数，返回取消钩子
 *
 * @example
 *
 * const debounceFun = debounce(callback, 30);
 * const cancel = debounceFun();
 * // 取消执行
 * cancel();
 */
export declare function debounce(fn: (...args: unknown[]) => unknown, delay?: number): (...arg: any[]) => () => void;