Thanks for taking the time to respond! Yes, I was going to do it from scratch (no libraries), it's supposed to be a very basic WYSIWYG markdown dialect editor,

Thanks for taking the time to respond! Yes, I was going to do it from scratch (no libraries), it's supposed to be a very basic WYSIWYG markdown dialect editor, which also supports rich text pasting. It will probably never see the light of day in any practical use, I just want to see firsthand how feasible it is to do something like this, and hopefully learn a thing or two in the process. Because the desired end result is markdown, and it's supposed to only support very basic formatting, I was planning to have a separate data model anyway, I figured I could use a MutationObserver, parse the editable dom into tokens, then just toss out everything that doesn't fit into the model, and generate new HTML based on the resulting model. I guess this ultimately does still treat the dom as the source of truth in a roundabout way, though.