This package is meant to upgrade commands in a project from v3 to v4 effortlessly.
Honestly, just do something like this:
npx @seleniumhq/side-migrate ./existing_file.side ./new_v4_file.side
After that, your project json should be upgraded to v4. If that doesn't work right for ya, please raise an issue here
Thanks!
Oh gee golly! Oh gee willikers batman! What a generous offer! <3 I'd start in contributing here and you can just go where the flow takes you!