I do remember that being a huge pain in the back, as in: - You have to maintain a full list of your files, in order, to include them in your html page (in dev

I do remember that being a huge pain in the back, as in: - You have to maintain a full list of your files, in order, to include them in your html page (in dev mode) and concat (for prod mode) - If you want to know on what other module a given module depends on, you have to hunt every call in the source code - You can never remove a dependency on an external lib as you can never be sure it's not used somewhere - Upgrading a lib was a pain Compared to every other language, it was a huge pain point. It's not by chance that so many people started to work on implementing modules for JS, there was a real need.