How do I compile multiple css files and javascript files into one file?

Question

I'm going through a wordpress theme building tutorial and was given a folder, https://github.com/t-hoff-94/university-static, with a JavaScript folder and a CSS folder, and also a 'bundled' file for each type that I am linking to for the actual project. I am trying to figure out how they compiled the code so I don't have to modify the bundled file and I can replicate the set-up. All I want is to be able to have multiple files to organize code, and I am curious how they imported "3rd party packages".

I have searched for ways to do this with webpack but most of it seemed to be injecting the css into a JavaScript file, or the style tag in the heading.

Answer 1

It looks like there were using webpack according to this file for example. But the whole thing is missing the actual config.