Izmjenjena struktura, dodan backand

web/node_modules/babel-preset-jest/index.js

@@ -0,0 +1,13 @@
+/**
+ * Copyright (c) 2014-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.
+ */
+
+module.exports = {
+  plugins: [
+    require('babel-plugin-jest-hoist'),
+  ],
+};