MDX, with the custom content involved, is though.
I've been working on a hybrid WYSIWYG editor for MDX at Vrite (https://vrite.io).
Currently supports custom block elements and JSON-serializable attributes. Now looking into inline content and building an extension system to render custom previews for the nodes.
Check it out if you're interested - it's also open-source.
Currently supports custom block elements and JSON-serializable attributes. Now looking into inline content and building an extension system to render custom previews for the nodes.
Check it out if you're interested - it's also open-source.