v0.9.0 svelte@5.57.0
low risk
ComposioHQ/awesome-claude-skillsAug 28, 2026 → Aug 28, 20260 days between releases
What's New
Adds server-side rendering exports, context helpers, and select element defaults in this minor Svelte update.
New Features
- Export RenderOutput, SyncRenderOutput, Csp, and Sha256Source from svelte/server
- Add has function to createContext
- Support defaultValue on <select>
- Add getOrInsert and getOrInsertComputed to SvelteMap
Improvements
- Performance: Reuse cached value in <option>/<select> value guard
- Bug fix: Route $derived teardown errors through invoke_error_boundary
- Bug fix: Remove <svelte:head> anchors on unmount
Bug Fixes
- Block template store subscriptions on the promise that assigns the store
- Track SvelteDate snapshots in reactions
- Warn on undeclared shorthand event handlers on <svelte:window>, <svelte:document>, and <svelte:body>
- Prevent malformed AST output for <select> with static value attribute
Upgrade Notes
No breaking changes, but verify imports for new server-side exports and check select element behavior with defaultValue.
The Two Releases
v0.9.0
AHP Swift Package v0.9.0
Aug 28, 2026· 2 months ago
Defines the AHP 0.9.0 specification, establishing standards for automation catalogs, turn resumption, and error handling.
Full release notessvelte@5.57.0
svelte@5.57.0
Aug 28, 2026· 2 months ago
This minor release introduces new server-side rendering exports, context helper functions, default value support for select elements, and SvelteMap utilities, alongside numerous bug fixes and performance improvements.
Full release notes