Espruino plugin for Rollup module bundler

Wow, nice - thanks! So with that gist you basically end up with a big JS file that you can just call espruinoRollup on and get a minified, tree-shaken result from?

Only thing I can see at the moment is that we need the modules to be loaded ahead of time because all the filesystem calls there are sync? But even so that could be done using the initial module loading code (it'd just have to be extended to deal with imports).