I'm one of the maintainers of this project: we're happy to hear some constructive feedback and proposals for improvements, so please don't hesitate to speak your mind at github issues: https://github.com/yjs/y-crdt/issues .

The internals are still very hot and in a state of flux, as we 1st decided to go with porting the Yjs, then leave cleaning and optimizations for 2nd step after we have something, that's compatible with existing Yjs behavior.