add: unit and integration testing

app/node_modules/jest-regex-util/build/index.d.ts

@@ -0,0 +1,19 @@
+/**
+ * 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.
+ */
+
+/**
+ * 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.
+ *
+ */
+export declare const escapePathForRegex: (dir: string) => string;
+
+export declare const escapeStrForRegex: (string: string) => string;
+
+export declare const replacePathSepForRegex: (string: string) => string;