From the documentation [2], compilation of js to c looks very interesting. If variable types are well known/defined (like Uint8Array, ..), this effectively presents a way to derive performant binaries from js

For those who don't know, the author is one of the most prolific programmers/creators of our time. Please check his bio [1]

[1]: https://en.wikipedia.org/wiki/Fabrice_Bellard

[2]: https://bellard.org/quickjs/quickjs.html#qjsc-compiler-1