Yjs CRDT Patterns

Reference Repositories

• Yjs — CRDT framework for shared editing and offline-first data

Related Skills: See workspace-api for the workspace abstraction built on Yjs.

When to Apply This Skill

Use this pattern when you need to:

• Design collaborative data models with Y.Map, Y.Array, or Y.Text.
• Handle conflict-prone updates with single-writer keys or nested maps.
• Implement drag-and-drop reordering with fractional indexing.
• Optimize Yjs storage for high-churn key-value workloads.
• Review boundaries to prevent raw Yjs type leaks into consumer code.

Core Concepts