Please use the Feature template in such cases - thanks!

I mentioned this a while ago in T187749: Make it possible to use code from an external repository for editor-controlled Javascript/CSS, I think it should be duped to there.

I think there's a difference between Scribunto modules from repositories (this task) and JS/CSS gadgets (T187749) that warrants two tasks.

In T352894#9389087, @Pppery wrote:

I think there's a difference between Scribunto modules from repositories (this task) and JS/CSS gadgets (T187749) that warrants two tasks.

I don't think there's a difference in any relevant implementation. You're going to need to check canEdit, build out a probably identical interface, so on and so on. I honestly can't see a pertinent delta between the two. When you look at the proposed implementation in that task... everything there applies about equally to Lua.

Have you tried Page Exchange?

Gergö wrote something like that a while ago I think, but I couldn't find it when I was looking for it a couple of days ago.

I started writing it, anyway. Would be a nice codejam project.