Problem with webpack is that freeform JS code is not "configuaration". Configuration presumes set amount of features driven by declarative statement.
Most of what I've seen done "in Webpack" in fact is shitty scripting in an awful language. I'm very happy to see movement away from this criminal waste of everyone's time.
Not gonna get into the details, as it's company proprietary code, but we aren't talking about a weekend project. This is a large, complex product that has a significant user-base, and it also has to handle a bunch of legacy stuff.
