Where are the teachers notes describing how to update the JS files with the angular reference?

Yeah, they kinda missed the boat on introducing Webpack without assisting us in setting it up properly. There is supposed to be a blog post 'Setting up Angular with Webpack'. That isn't available when you click the link.

At the top of all of your Angular files ( /controllers/main.js , /controllers/todo.js , /directives/todo.js, /services/data.js ) below the 'use strict' statement : You need to add the following.

var angular = require('angular');

Once those have been updated, your app.js file should look like this.

'use strict';

var angular = require('angular');

angular.module('todoListApp', []);

require('./scripts/controllers/main.js');
require('./scripts/controllers/todo.js');
require('./scripts/directives/todo.js');
require('./scripts/services/data.js');

I had to watch the video again to understand what was happening, but after that I figured I had to require angular in all the files in the controllers, directives, and services directories, basically 3 additional files to the one Huston modified. I also had to require those files in the app.js file. The response from Derek Shanks describes this perfectly. If you run webpack each time you add a new require statement to the app.js file and then add the require angular statement the file, you can look at your todo.bundles.js file and you will see that the new reference has been added to the file.