svelte@5.49.1

sveltejs/sveltesvelte@5.49.1Jan 30, 2026by github-actions[bot]

AI Summary

A maintenance patch addressing SSR optimizations, text node handling, and promise management within script tags.

Key Highlights

Merged consecutive large text nodes to improve rendering performance.
Optimized SSR output by only creating async functions when necessary.
Improved separation of multiline HTML blocks in the `print()` function.
Prevented unhandled exceptions arising from dangling promises in `<script>`.

Full Release Notes

### Patch Changes

-   fix: merge consecutive large text nodes ([#17587](https://github.com/sveltejs/svelte/pull/17587))

-   fix: only create async functions in SSR output when necessary ([#17593](https://github.com/sveltejs/svelte/pull/17593))

-   fix: properly separate multiline html blocks from each other in `print()` ([#17319](https://github.com/sveltejs/svelte/pull/17319))

-   fix: prevent unhandled exceptions arising from dangling promises in <script> ([#17591](https://github.com/sveltejs/svelte/pull/17591))