/**
 * 从对象中选取指定属性
 * @param obj 原对象
 * @param keys 要选取的键数组
 */
export const pick = <T extends Record<string, any>, K extends keyof T>(
  obj: T,
  keys: K[]
): Pick<T, K> => {
  const result = {} as Pick<T, K>;
  for (const key of keys) {
    if (key in obj) {
      result[key] = obj[key];
    }
  }
  return result;
};