/**
 * throttle:函数节流
 * @params
 *  func「function,required」:最后要执行的函数
 *  wait「number」:设定的频发触发的频率时间，默认值是300
 * @return
 *  func执行的返回结果
 * @describe 连续触发事件但是在 n 秒中只执行一次函数。
 */
export interface ThrottleOptions {
    delay: number;
    leading?: boolean;
    trailing?: boolean;
}
export declare const isThrottleOptions: (arg: ThrottleOptions | number) => arg is ThrottleOptions;
export declare function throttle(options: ThrottleOptions | number, callback: any): {
    (this: any, ...args: any[]): void;
    cancel: () => void;
};