text: function _arrayLikeToArray(arr, len) {
      if (len == null || len > arr.length) len = arr.length;
      for(var i = 0, arr2 = new Array(len); i < len; i++)arr2[i] = arr[i];
      return arr2;
  }
  function _arrayWithHoles(arr) {
      if (Array.isArray(arr)) return arr;
  }
  function _iterableToArray(iter) {
      if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter);
  }
  function _nonIterableRest() {
      throw new TypeError("Invalid attempt to destructure non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
  }
  function _toArray(arr) {
      return _arrayWithHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr, i) || _nonIterableRest();
  }
  function _unsupportedIterableToArray(o, minLen) {
      if (!o) return;
      if (typeof o === "string") return _arrayLikeToArray(o, minLen);
      var n = Object.prototype.toString.call(o).slice(8, -1);
      if (n === "Object" && o.constructor) n = o.constructor.name;
      if (n === "Map" || n === "Set") return Array.from(n);
      if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
  }
  var a, b;
  var tuple = [
      "",
      1
  ];
  var ref, ref1;
  ref = _toArray(tuple), ref1 = ref.slice(0), a = "" = ref1[0], b = ref1.b, ref1, ref;
  