> ## Documentation Index
> Fetch the complete documentation index at: https://docs.powersync.com/llms.txt
> Use this file to discover all available pages before exploring further.

# CRDT Data Structures

> Use CRDT data structures from libraries like Yjs alongside PowerSync for conflict-free collaborative editing with offline sync support.

This may be useful for cases such as document editing, where last-write-wins is not sufficient for conflict resolution. PowerSync becomes the provider for CRDT data — both for local storage and for propagating changes to other clients.

### Example Implementations

For an example implementation, refer to the following demo built using the PowerSync Web SDK:

* [Yjs Document Collaboration Demo](https://github.com/powersync-ja/powersync-js/tree/main/demos/yjs-react-supabase-text-collab)