We recently moved a big piece of code from custom script loading -> requirejs -> webpack. I really couldn't even tell you how we managed to do it. I think it he

We recently moved a big piece of code from custom script loading -> requirejs -> webpack. I really couldn't even tell you how we managed to do it. I think it helped that we had a few goals in mind and we set out to find a better solution. First, the custom js loading was buggy and inefficient so we moved it to requirejs. Then we wanted everything to be bundled into a single file so we figured out r.js. r.js was really slow and we wanted pre-compiled handlebars templates so we moved over to webpack. Now, we keep accidentally writing es2015 and breaking IE11 so it'll probably be time to introduce babel at some point. It was really no different than any other major refactoring. Fix up the code and then chisel away the error messages one at a time.