User blog comment:Grunny/Introducing Lua, for faster and more powerful templates/@comment-1824272-20140613211455/@comment-4522253-20140614021825

Lua isn't used for a lot of things outside the Wiki realm (though it can be), but it's not all that surprising that you haven't heard of it unless you do Wikipedia editing. VisualEditor will no doubt read Modules just like it does JavaScript and the like now, and inside Templates with an.