Looking for a basic example for build tool module for example files in say rollup

Thank you.
The examples are fine i guess, its counter to how the example projects are setup and those glitch examples are pretty bloated, and for every example I have to find this starter again. I miss just loading a file pre modules rewrite.

I see that things are complicated in github discussion https://github.com/mrdoob/three.js/issues/17482

Can I ask then can I get a simple example rollup config that will bundle the THREE lib and all necessary external libs? Or is that also kinda not a thing?

edit: this was the missing config I referenced Rollup build setup to import glsl files and three.js examples