https://discuss.prosemirror.net/t/differences-between-prosem...

Ultimately though, there are many similarities between the two – intentionally so. We were inspired by ProseMirror and some of its APIs and approaches. I think the biggest underlying differences are in how we tackle things from a DX perspective. We tried to bring a more composable API to making text editors work – from the plugin patterns, how updates and reads work, to how you listen for changes and react to them. Much of this was inspired by my prior work working on the React core team and from creating Inferno.