This topic doesn't have a dedicated page yet. For now, here are the links I've gathered with this tag.
Building A Web Code Editor — Smashing Magazine
I needed this article a while ago - and now I'm in Astro land I think I can use and implement this. A code editor component is probably in my very near future
As well as exploring this framework for building the component library - this playground is ace - I wonder if it's build using Lit! Code editor in the brower with tabs between the two - this is ace