Isolate file system in development

[mammadataei]

I want to use fs utilities to modify some text files within the $APPDATA directory. The problem is that if I use the default path, the development fixtures collide with the real data when I install and use the published version.

How can I isolate the file system to load fixtures within the project using fs utilities or change the $APPDATA during development and map it to a directory inside the project?