add: unit and integration testing

app/node_modules/@jest/globals/build/index.js

@@ -0,0 +1,26 @@
+/*!
+ * /**
+ *  * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *  *
+ *  * This source code is licensed under the MIT license found in the
+ *  * LICENSE file in the root directory of this source tree.
+ *  * /
+ */
+/******/ (() => { // webpackBootstrap
+/******/ 	"use strict";
+let __webpack_exports__ = {};
+
+
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+// eslint-disable-next-line @typescript-eslint/no-namespace
+
+throw new Error('Do not import `@jest/globals` outside of the Jest test environment');
+module.exports = __webpack_exports__;
+/******/ })()
+;