When developing I'd suggest you use the IDE though - that can upload directly to a storage file on the device so you can make changes/upload and develop really quickly with that.
Or you actually wanted to do a kind of apploader install foobar command?
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.
There's an Espruino CLI tool that you can use to do uploads of individual files: https://www.npmjs.com/package/espruino
When developing I'd suggest you use the IDE though - that can upload directly to a storage file on the device so you can make changes/upload and develop really quickly with that.
Or you actually wanted to do a kind of
apploader install foobar
command?