I'm just let you know that there is a JavaScript runtime already ported to RP2040 (Raspberry Pi Pico). https://github.com/kaluma-project/kaluma
Sun 2021.09.05 - resp post #16
Yes, while one may use JS however, it still isn't Espruino!
2nd bullet
ECMAScript 5.1/2015(subset) standard compliant (Powered by JerryScript)
@Robin started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I'm just let you know that there is a JavaScript runtime already ported to RP2040 (Raspberry Pi Pico).
https://github.com/kaluma-project/kaluma