Comment by claytongulick

3 days ago

For those who would like a true "from scratch" implementation of JavaScript, Fabrice Bellard's QuickJS [1] is clean, readable and approachable. It's a full implementation of modern JavaScript in a straightforward project, not nearly as complex or difficult as V8.

[1] https://bellard.org/quickjs/

7 comments

claytongulick

Reply
hackthemack  3 days ago

QuickJS is amazing. You can put in javascript code, run it through QuickJS and make little binary utilities to run on their own.

Someone took QuickJS and put it in wasm so you can run QuickJS in the browser or in node.

https://github.com/justjake/quickjs-emscripten

Fabrice Bellard is on another planet when it comes to programming. He also wrote FFmpeg and QEMU (among other things).

jhgb  3 days ago

To be fair, there's no claim being made that this was supposed to be a from-scratch implementation of Javascript. Just an equivalent to Deno/Node which don't have their own implementation of Javascript either.

  • ranger_danger  3 days ago

    > there's no claim being made that this was supposed to be a from-scratch implementation of Javascript

    That is exactly how I interpreted the title of the article.