ts-native VS nullc

I have gone through 3 iterations and the third was faster than Lua and came close (enough for me) to native C performance with the benchmarks I tried. I'm now on the fourth and hopefully last iteration of this masochistic quest and I'm tired. I want to do this right. I've even made it through much of the dragon book. Apart from the naive solutions I end up wanting to replace in each previous iteration, the problem I keep coming up against is that I can't find many resources that describe interfaces between the host (C++) and the compiled code. I come up with my own ideas for how things should work and look, and then once I finish I can't shake the feeling that there's a better/cleaner/faster way. I start over and come up with better solutions only to feel the same eventually. I want to write solid code that I can feel confident about so I can put this all behind me.

Here's an example: test.gjs

Along with the README, there is a "Language Reference" in the wiki: https://github.com/WheretIB/nullc/wiki/Language-Reference although it's still pretty terse.