How to use with uglify or other minifier?

Hey,
this is a fantastic starter kit for building a lib.

What if I want to serve the cjs, umd, and esm version both unminified and minified? For example:

- mylib.cjs.js
- mylib.cjs.min.js
- mylib.esm.js
- mylib.esm.min.js
- mylib.umd.js
- mylib.umd.min.js

How do I obtain this?

Thanks