var _client = babelHelpers.classPrivateFieldLooseKey("client"); var Foo = function Foo(props) { "use strict"; babelHelpers.classCallCheck(this, Foo); [babelHelpers.classPrivateFieldLooseBase(Foo, _client)[_client]] = props; }; Object.defineProperty(Foo, _client, { writable: true, value: void 0 });