This is so cool. I love to see Javascript used for stuff like this. It blew my mind that the James Webb Telescope uses a custom Javascript runtime for a lot of the onboard functions.
Why do you love to see a particular language used for something? It would be like being excited at seeing someone using aluminum to build something over steel/wood/etc.
Sorry, late reply, but I think it's still worth answering.
I think Javascript is a really fun language. I've done a lot of embedded C and it can be... exhausting? I would love to try Javascript on an embedded system, IoT device, etc. I'll bet a lot of the most annoying stuff can be abstracted away pretty easily on modern hardware.