gets Relay/Classic/Compat building

Reviewed By: fkgozali

Differential Revision: D5482765

fbshipit-source-id: 0a7c2b8d99256352f09b6510ec8ca1631425e232

Libraries/vendor/core/ErrorUtils.js

@@ -0,0 +1,27 @@
+/**
+ * Copyright (c) 2015-present, 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 ErrorUtils
+ * @flow
+ */
+
+/* eslint-disable strict */
+
+/**
+ * The particular require runtime that we are using looks for a global
+ * `ErrorUtils` object and if it exists, then it requires modules with the
+ * error handler specified via ErrorUtils.setGlobalHandler by calling the
+ * require function with applyWithGuard. Since the require module is loaded
+ * before any of the modules, this ErrorUtils must be defined (and the handler
+ * set) globally before requiring anything.
+ *
+ * However, we still want to treat ErrorUtils as a module so that other modules
+ * that use it aren't just using a global variable, so simply export the global
+ * variable here. ErrorUtils is originally defined in a file named error-guard.js.
+ */
+module.exports = global.ErrorUtils;