anyone thinking about hanging their hat on writing decentralized, local first, crdt-driven software should also consider the complexity of changing your schema when there are potentially thousands of clients with different opinions of what that schema should be. some interesting research has been done[1] in this domain but i haven't seen any library of this ilk that supports real-world schema evolution in a way doesn't make me really, really wish i had a proper backend to lay down the law. the fact that migrations are in a "coming soon" state makes me wary of using jazz, and i wonder how they would approach this problem with the library as it is now.
[1] https://www.inkandswitch.com/cambria/