svelte@5.57.0 v2026.8.28.0
low risk
hasaneyldrm/exercises-datasetAug 28, 2026 → Aug 29, 20260 days between releases
What's New
Different projects: Svelte vs Macro (no shared features)
New Features
- Export server-side rendering utilities (RenderOutput, SyncRenderOutput, Csp, Sha256Source)
- Add agent credential-stamping for sandboxes and cloud agents
- Add calendar event search UI
- Add agent per-session instructions
- Add new app view primitives and components
Improvements
- Reuse cached value in `<select>` value guard
- Source egress URL from Doppler
- Improve tool rendering
- Fix thread styling for StandaloneThreads
- Enable oxlint eslint/complexity
Bug Fixes
- Block template store subscriptions on promise assignment
- Remove `<svelte:head>` anchors on unmount
- Warn on undeclared shorthand event handlers
- Fix thread styling for StandaloneThreads
- Fix egress URL source for agent harness
Upgrade Notes
None, as the provided release notes appear to be for different projects (Svelte vs Macro).
The Two Releases
svelte@5.57.0
svelte@5.57.0
Aug 28, 2026· 2 months ago
This minor release introduces new server-side rendering utilities, adds a `has` function to context creation, supports default values for select elements, and enhances SvelteMap methods. It also includes a large number of bug fixes, performance optimizations, and improvements to the compiler and runtime.
Full release notesv2026.8.28.0
v2026.8.28.0
Aug 29, 2026· 2 months ago
Focuses on agent capabilities, introducing credential-stamping for agents, calendar event search, and new UI primitives for the application.
Full release notes