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Dev.to
7/16/2026
The original title is: "Multi-Tab State Sync Made Easy: Introducing useSharedState in react-hook-lab!"

The original title is: "Multi-Tab State Sync Made Easy: Introducing useSharedState in react-hook-lab!"

Original: Multi-Tab State Sync Made Easy: Introducing useSharedState in react-hook-lab!

Short summary

react-hook-lab introduces useSharedState, a React hook that synchronizes state across multiple browser tabs in real-time using the BroadcastChannel API. It handles conflict resolution via logical versioning and unique tab identifiers, and integrates with React's rendering lifecycle to prevent tearing. The API mirrors useState, requiring only a unique sync key and initial value.

  • New useSharedState hook syncs React state across browser tabs via BroadcastChannel
  • Conflict resolution uses logical versioning and unique tab IDs
  • API mirrors useState — just pass a sync key and initial value

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