You are confused about how the tool works. This project uses inotifywait from inotify tools to reimplement what inotifywait already does. The linked article pag

You are confused about how the tool works. This project uses inotifywait from inotify tools to reimplement what inotifywait already does. The linked article page at github clearly says this. Adding a new layer atop inotify tools doesn't make that package automatically run on new platforms. There are already tools on macos that use the native FSEvents API for watching for file changes and executing scripts.