whole_func_string: function isEmpty(obj) {
    if (isArray(obj)) {
      return obj.length === 0;
    } else if (isObject(obj)) {
      return _Object$keys(obj).length === 0;
    } else {
      return !obj;
    }
  }
func_code_string: function isEmpty(obj) {
    if (isArray(obj)) {
      return obj.length === 0;
    } else if (isObject(obj)) {
      return _Object$keys(obj).length === 0;
    } else {
      return !obj;
    }
  }
func_documentation_string: return true when the value is "", {}, [], 0, null, undefined, false.