Author of DocNode here. Yes, it’s still early days. But it’s a very robust library that I don’t expect will go through many breaking changes. It has been developed privately for over 2 years and has 100% test coverage. Additionally, each test uses a wrapper to validate things like operation reversibility, consistency across different replicas, etc.
DocSync, which is the sync engine mainly designed with DocNode in mind, I would say is a bit less mature.
I’d love it if you could take a look and see if there’s anything that doesn’t convince you. I’ll be happy to answer any questions.