Where can I download the resources, GameUtils, etc. folders?

I have purchased the physical copy of the book I cannot find the GameUtils folder containing the game utilities swift files. Where can I find them? (Not talking about the source codes for the different projects in the book).

Nvm. Found it.

However, this file is outdated. Is there an up to date file?

The electronic versions include the source files. Not sure if they are all completely up to date as Apple keeps ‘improving’ Xcode and Swift. Is there a URL in the book? The one you included? Xcode auto-update/complete often fixes things if not quite right.