[singaporecode]

ProseMirror has some of the worst developer experience possible. I wasted so much time figuring out it’s convoluted API and abandoned it soon after.

It does apparently have the best live editing / collaboration features of all text editors out there.

[samwillis]

I would disagree on "worst developer experience possible", it has a very steep leaning curve, but once you grok it it makes a lot of sense.