"Tiny boxer" by @tomasp, a small boxer-like environment that runs in the browser: https://github.com/tpetricek/tiny-boxer

Thanks for sharing this 🙂 - I also added completed versions in a branch, in case people just want to play with this!

Thanks @tomasp, that's indeed what I want to do, at least as a first step. It would help to add some instructions for how to run something. I had to look at

main.js

to figure out that I need to (1) select a box to evaluate and (2) press alt-e to single-step or alt-r to run all steps. Except that even that doesn't work: nothing happens. I ended up calling

evalStep()

and

evalAll()

from the console. But from then on, it's fun to play with this!

It seems to break with some keyboard layouts

Some quick debugging suggests that one of my extensions gets the keydown event. The joy of malleable systems 😉

FWIW - I see some interesting similarities / observations wrt re-using stuff we've already got. Tiny-boxer uses DOM and makes something else of it. DaS re-uses .drawio and makes something else of it. T2t re-uses Python and JS and make something else of them (they become assembly languages). [I happen to think that OhmJS makes it extra easy to re-use text-based already-existing things] [DaS and t2t are little things I made]