/**
 * 函数结果缓存
 * @param fn 原函数
 * @returns 带缓存的函数
 */
export const memoize = <T extends (...args: any[]) => any>(fn: T): T => {
  const cache = new Map<string, ReturnType<T>>();
  return ((...args: any[]) => {
    const key = JSON.stringify(args);
    if (cache.has(key)) return cache.get(key);
    const result = fn(...args);
    cache.set(key, result);
    return result;
  }) as T;
};