const keys: { [key: string]: any } = {}

/**
 * 有冷却时间的函数
 * @param key 方法key
 * @param delayed 冷却时间
 * @param fn 方法
 */
export default (key: string = 'default', delayed: number = 200, fn: Function) => {
    if (keys[key]) {
        return;
    } else {
        fn();
        keys[key] = setTimeout(() => { delete keys[key] }, delayed);
    }
}