In the mean time you could assemble it on your PC and then use https://www.espruino.com/File+Converter to convert that for Espruino, which you could then use with E.nativeCall as the Assembler does?
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.
That's be great - thanks!
In the mean time you could assemble it on your PC and then use https://www.espruino.com/File+Converter to convert that for Espruino, which you could then use with E.nativeCall as the Assembler does?