i use codemirror 6 with helix and i havent found it anymore difficult than vanilla JS, but that is mostly irrelevant to this channel

Well prosemirror is huge and has a huge API, not sure how complicated your use of codemirrors APIs are but I’ve dealt with Prosemirror for a long time and it was a sound choice for us to write it all in JS instead of spending the extra time trying to translate the code to CLJS every time we sat at it.