text: function _classCallCheck(instance, Constructor) {
      if (!(instance instanceof Constructor)) throw new TypeError("Cannot call a class as a function");
  }
  function _defineProperties(target, props) {
      for(var i = 0; i < props.length; i++){
          var descriptor = props[i];
          descriptor.enumerable = descriptor.enumerable || !1, descriptor.configurable = !0, "value" in descriptor && (descriptor.writable = !0), Object.defineProperty(target, descriptor.key, descriptor);
      }
  }
  function _createClass(Constructor, protoProps, staticProps) {
      return protoProps && _defineProperties(Constructor.prototype, protoProps), staticProps && _defineProperties(Constructor, staticProps), Constructor;
  }
  var Opt = function() {
      "use strict";
      function Opt() {
          _classCallCheck(this, Opt);
      }
      return _createClass(Opt, [
          {
              key: "toVector",
              value: function() {}
          }
      ]), Opt;
  }(), Vector = function() {
      "use strict";
      function Vector() {
          _classCallCheck(this, Vector);
      }
      return _createClass(Vector, [
          {
              key: "tail",
              value: function() {}
          },
          {
              key: "partition2",
              value: function(predicate) {}
          }
      ]), Vector;
  }();
  exportCommand(save), gg(ff);
  