[iudqnolq]

I've only looked into yrs. Unfortunately copying a js API into rust and using unsafe whenever you get a borrow check error feels doomed.

> Currently we didn't have any known undefined behaviour bugs caused by [casting pointers we don't have exclusive access to to mutable references]. In the future we may want to adopt different way of working with blocks with more respect regarding borrow checker rules, but currently priority was compatibility with Yjs.

https://github.com/y-crdt/y-crdt/issues/233#issuecomment-136...

Edit: I've only played around with my own toy crdt implementations, but I think this is also completely unnecessary. Yrs has a whole transaction API for concurrently mutating the same document instance through a shared handle. Not only is it unsound but there are also a bunch of places that will just panic if called concurrently. But you can just structure your program differently. For example, you could have a single thread/task per document that all the clients connect to.

That isn't to say yrs isn't impressive. It's quite good for someone's first rust project written all at once in a short period of time. But I don't think it's production ready, and I'm skeptical it's fundamental architecture can be.