Including Javascript files with JQuery dependancy

Great question. We did this with Browserify Shim.

You'd do something like this in your package.json:
"browserify-shim": {
  "jQuery": "global:LITHIUM.jQuery"
}

Then in your bundle you can import Lithium's jQuery
const $ = require('jQuery')

More info here: https://github.com/thlorenz/browserify-shim

OR...

A less elegant way might be something like:

var $ = window.LITHIUM.jQuery || {};

You'd want to put your script includes in last_chance_html to ensure the Lithium object has loaded by the time your files load and make the assignment. I wouldn't recommend this, but it might work as a quick solution.