I am currently developing my own Markdown editor and looked into CodeMirror, Draft.js and ProseMirror and I also plan to base it on CodeMirror. I think if all y

I am currently developing my own Markdown editor and looked into CodeMirror, Draft.js and ProseMirror and I also plan to base it on CodeMirror. I think if all you need is "syntax highlighting" (maybe including font sizes for headlines) you are better off using CodeMirror. Of course, if you want some WYSIWYG functionality Draft.js, ProseMirror and the like may be more suitable (or even mandatory).