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Loro

@loro_dev

Reimagine state management with CRDTs https://teapaw.org/t.co/SeK6dhgNQt Bluesky: https://teapaw.org/t.co/nMI80TgCmE

loro.dev/
Joined December 2022
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  • Following2
  • Followers1.4K
New in Loro: Mergeable Containers! Concurrent Map child container creations no longer overwrite. This surprising overwrite issue existed in Loro, Yjs, and Automerge. Happy to finally ship a solution!
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The Loro Protocol repo is now open source! It contains documentation for the wire protocol, along with TypeScript and Rust implementations of WebSocket clients and servers.
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zx (@zx_loro) profile picturezx
@zx_loro24 Aug 2025
A quick preview of the new lib: you can setState like React; diffs are computed automatically and fed to the CRDTs. Your app can easily support real-time collaboration, offline editing, versioning.
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This “Copy Markdown” gives you prompt-ready text 👀
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You can now use Loro in React Native📱✨ The demo below showcases the real-time collaboration between an iPhone (left) and an Android (right) through Loro.
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🦜🔍
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New in loro-crdt v1.5.0: Enhanced document control with pre-commit hook, plus EphemeralStore for optimized state synchronization. Now you can build verifiable editing history as Merkle DAGs inside Loro.
const doc = new LoroDoc(); doc.setPeerId(0); doc.subscribePreCommit((e) => { const changes = doc.exportJsonInIdSpan(e.changeMeta); expect(changes).toHaveLength(1); const hash = crypto.createHash("sha256"); const change = { ...changes[0], deps: changes[0].deps.map((d) => { const depChange = doc.getChangeAt(idStrToId(d)); return depChange.message; }), }; hash.update(JSON.stringify(change)); const sha256Hash = hash.digest("hex"); e.modifier.setMessage(sha256Hash); }); console.log(change); // The output is shown below doc.getList("list").insert(0, 100); doc.commit(); // Change 0 // { // id: '0@0', // timestamp: 0, // deps: [], // lamport: 0, // msg: undefined, // ops: [ // { // container: 'cid:root-list:List', // content: { type: 'insert', pos: 0, value: [100] }, // counter: 0 // } // ] // } doc.getList("list").insert(0, 200); doc.commit(); expect(doc.getChangeAt({ peer: "0", counter: 0 }).message) .toBe("2a

ALT const doc = new LoroDoc(); doc.setPeerId(0); doc.subscribePreCommit((e) => { const changes = doc.exportJsonInIdSpan(e.changeMeta); expect(changes).toHaveLength(1); const hash = crypto.createHash("sha256"); const change = { ...changes[0], deps: changes[0].deps.map((d) => { const depChange = doc.getChangeAt(idStrToId(d)); return depChange.message; }), }; hash.update(JSON.stringify(change)); const sha256Hash = hash.digest("hex"); e.modifier.setMessage(sha256Hash); }); console.log(change); // The output is shown below doc.getList("list").insert(0, 100); doc.commit(); // Change 0 // { // id: '0@0', // timestamp: 0, // deps: [], // lamport: 0, // msg: undefined, // ops: [ // { // container: 'cid:root-list:List', // content: { type: 'insert', pos: 0, value: [100] }, // counter: 0 // } // ] // } doc.getList("list").insert(0, 200); doc.commit(); expect(doc.getChangeAt({ peer: "0", counter: 0 }).message) .toBe("2a

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New version control primitives have been added to Loro: - diff(from, to): calculate the differences between any two versions - revertTo(version): Generate ops to revert to the target version - applyDiff(diff): Apply differences Inspecting historical ops is now easier
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Loro 1.0 is here! Introducing stable binary document format, blazing-fast import speed, Git-like shallow clone, enhanced version control, and more. loro.dev/blog/v1.0
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We're on Hacker News!
https://loro.dev/blog/movable-tree

ALT https://loro.dev/blog/movable-tree

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