text: function _defineProperty(obj1, key, value) {
      if (key in obj1) {
          Object.defineProperty(obj1, key, {
              value: value,
              enumerable: true,
              configurable: true,
              writable: true
          });
      } else {
          obj1[key] = value;
      }
      return obj1;
  }
  //@target: ES6
  //@declaration: true
  var obj = _defineProperty({
  }, Symbol.isConcatSpreadable, 0);
  