Nifty... I'm not really big on even lua myself. This seems to come in around 40kb for the runtime where luajit seems to be 140-160kb. I'm somewhat curious what targets the author is concerned with.
This isn't to be dismissive or anything, most of the applications I write seem to come in well over 2mb in size for rust and over 80mb for C# which are massive in comparison, so I'm interested in use cases. For that matter, I've been inclined to reach for JS as much as anything, though I've considered Lua before.