Organize code with modules (and learn more about modules!)

[LearningNerd]

Both server.js and local.js are large enough files now that I often find myself wasting time just scrolling through the code to find what I'm looking for. (I use my text editor's search function all the time, but it's still more tedious than it needs to be!) So it's definitely time to break up my code into separate files.

I've been meaning to learn more about using modules with NodeJS and in client-side code with the new export/import feature, transpiling into Babel or using some build tool to recombine all the JavaScript files for production.