Hi,
The "Desktop features supported" condition for FileSystem does not return true when running on a NW.js export.
It works fine with Webview2, but I do not want to use Webview2 until some of the deeper problems with it are fixed.
I was using this to write save data to the user's local folder, as FileSystem is helpful for that. It seems like NWjs can do the same thing, but less efficiently (no cross-platform pickers).