v2754 svelte@5.57.1
sveltejs/svelteSep 16, 2026 → Sep 18, 20262 days between releases
What's New
Patch release stabilizing SSR, event cleanup, and parser performance.
Improvements
- Reduced garbage collection during SSR render results.
- Improved parser performance by optimizing interactions with Acorn.
- Avoided regex matching in parser where possible.
Bug Fixes
- Cancelled deferred event listeners during component cleanup.
- Preserved global CSS in components without scopable elements.
- Resolved the fallback of an each block in the enclosing scope.
- Fixed reactive state proxy ownership using Object.hasOwn.
- Serialized input default values during server rendering.
Upgrade Notes
SSR performance should improve with reduced garbage collection. Event listeners now clean up correctly during component destruction. CSS scoping changes may affect how global styles are handled in specific component structures.
The Two Releases
Release v2754
Sep 16, 2026· 1 month ago
An automated CI release for RuView fixing calibration process identity.
Full release notessvelte@5.57.1
Sep 18, 2026· 1 month ago
This patch release focuses on stabilizing the compiler and runtime, primarily addressing issues in server-side rendering (SSR), event handling cleanup, and parser performance. Key improvements include optimizations to reduce garbage collection, fixes for reactive state proxy ownership, and enhancements to CSS scoping.
Full release notes