front-standard-utils/src/object.ts

前端工具库

/**
 * 
 * @desc   判断`obj`是否为空
 * @param  {Object} obj
 * @return {Boolean}
 */
export const isEmptyObject = (obj: any) => {
  if (!obj || typeof obj !== 'object' || Array.isArray(obj))
    return false
  return !Object.keys(obj).length
}

/**
 * @desc   obj深克隆
 * @param  {Object} obj
 * @return {obj}
 */
export function deepClone(obj: any) {
  const type = Object.prototype.toString.call(obj).slice(8, -1); // [object Array] => Array
  switch (type) {
    case 'Array':
      return obj.map((o: any) => deepClone(o));
    case 'Object':
      return Object.keys(obj).reduce((sum: any, curr) => {
        sum[curr] = deepClone(obj[curr]);
        return sum;
      }, {});
    case 'Date':
      return new obj.constructor(Number(obj));
    default:
      return obj;
  }
}