Yes, I'm interested in this, what CRDT did you use? Definitely draft a nip, more robust list building is applicable in many places.
https://video.nostr.build/fe40f309c4458fc0ee83f70cdaa1403703fee22882de409362cf74422d9934f6.mov
As promised, I solved the List Synchronization Problem (your contact list being swiped out problem) for the whole Nostr community so that you don't have to re-invent the algorithm again.
Here is a demonstration with Relay List, which is a harder version of the problem because we also use relays to synchronize the configuration of themselves.
You can open 2 different devices/clients and modify the same list with different values, and they will converge to the same value instead of overriding each other.
Watch what happened from 26s - 28s!
The secret is using a data structure of CRDT. More on this later.
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I'm just tagging more nostr developers I have on top of my head. Feel free to tag & share to other developers & users.
Feedbacks welcome. If the effect in the video is what you consider a solution for the list synchronization problem and upvote this note, I will draft a NIP.
Discussion
At first I wrote my own, ignorant, didn’t work.
Now it’s Automerge. It has Rust implementation and wasm for JS and the API is simple. Technically the rust implementation can be used everywhere.
Yjs and Yrs should also work but it doesn’t have a good Deno support so I didn’t use.