Multiple files and importing libraries

Espruino works a slightly different way by default - it's a bit like 'hibernating'. There's a bit more info here: http://www.espruino.com/Saving

You don't have boot/main/etc - you have one file that you upload from the IDE, however that file can require other files. Usually they'd be online, but you can set up a Project Sandbox directory in settings and then stick your modules in that and include them.

The IDE only supports editing one file, so when you're getting to the point of having multiple modules you may want to switch to using the command-line tools, and then just use your favorite editor.