Index: frontend/node_modules/babel-preset-jest/index.js
===================================================================
--- frontend/node_modules/babel-preset-jest/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/babel-preset-jest/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,14 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+const jestPreset = {
+  plugins: [require.resolve('babel-plugin-jest-hoist')],
+  presets: [require.resolve('babel-preset-current-node-syntax')],
+};
+
+// @babel/core requires us to export a function
+module.exports = () => jestPreset;