React 19.1.0 Released

​React 19 received an update on March 28, 2025, which introduced several enhancements and fixes to the library.​

• Owner Stack API: A development-only feature that helps trace which components are responsible for rendering a particular component.​
  
• Suspense Improvements: Enhanced support across client, server, and during hydration. Fallback handling and scheduling are more reliable now.
  
• Hydration Optimizations: Limits unnecessary client rendering and improves retry behavior.​
  
• React DOM Updates: Fixes edge cases related to empty hrefs, DOM containers, and responsive image preloading. It also adds support for nesting <script> and <template> inside <select>.​
  
• use-sync-external-store: Includes proper exports fields to support multiple entry points.​
  
• React Server Components: Introduces the experimental unstable_prerender API, improves streaming support (including edge environments), and adds the react-server-dom-parcel for Parcel bundler integration.​

The update includes fixes to issues withuseId, key warnings, passive effects, and Portal component naming.​ Developers should update to version 19.1.0 to take advantage of these improvements.

Visit React’s repository on GitHub for full release notes.

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