react app

react-app/node_modules/react/lib/performance.js

@@ -0,0 +1,26 @@
+/**
+ * Copyright 2013-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @providesModule performance
+ * @typechecks
+ */
+
+"use strict";
+
+var ExecutionEnvironment = require("./ExecutionEnvironment");
+
+var performance;
+
+if (ExecutionEnvironment.canUseDOM) {
+  performance =
+    window.performance ||
+    window.msPerformance ||
+    window.webkitPerformance;
+}
+
+module.exports = performance || {};