Is it compiled or interpreted? If interpreted does it use existing interpreter? The description mentions Lua, does it use the Lua engine? Does it have JIT?
If it is compiled is it based on LLVM?
I don't know much about Janet (all I've done is complain that create-fiber did not work the way the docs say it did), but I'm pretty sure it uses its own bytecode interpreter.
It doesn't "depend" on Lua at all, but you can definitely feel inspiration from Lua in the language. Has coroutines, tables, small and easy to embed as a design goal, has a LPEG-like PEG built-in. Really lovely if you can appreciate those things in Lua-land.
