text: var _foo = new WeakSet();
  let Foo = /*#__PURE__*/ function() {
      "use strict";
      function Foo() {
          _classCallCheck(this, Foo);
          _classPrivateMethodInit(this, _foo);
      }
      _createClass(Foo, [
          {
              key: "test",
              value: function test(other) {
                  return _foo.has(other);
              }
          }
      ]);
      return Foo;
  }();
  function foo() {}
  