fix: yield to allow prerender updates to be visible - #16748
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separately: nothing clears the last rendering /x line after q.done(), so the build still ends looking stuck through the manifest/adapter steps
Co-authored-by: Nic Polumeyv <nicolas.polum@outlook.com>
teemingc
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Aug 12, 2026
Rich-Harris
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…s line (#16750) If app code writes to stdout without a trailing newline during prerendering on a TTY, the next progress line lands on the same row and the update after that clears the row: ``` rendering /partial... rendering /dynamic/foo... <- app output destroyed ``` The write proxies now track whether the last chunk ended mid-line, and the progress line starts a fresh row instead: ``` rendering /partial... IMPORTANT APP OUTPUT (no newline) rendering /dynamic/foo... ``` surfaced while reviewing #16748
Rich-Harris
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This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to version-3, this PR will be updated.⚠️ ⚠️ ⚠️ ⚠️ ⚠️ ⚠️ `version-3` is currently in **pre mode** so this branch has prereleases rather than normal releases. If you want to exit prereleases, run `changeset pre exit` on `version-3`.⚠️ ⚠️ ⚠️ ⚠️ ⚠️ ⚠️ # Releases ## @sveltejs/kit@3.0.0-next.21 ### Major Changes - breaking: move remote function types and `isValidationError` to `@sveltejs/kit/remote` ([#16764](#16764)) - breaking: move `RequestEvent` and `Cookies` to `$app/server` ([#16751](#16751)) ### Patch Changes - fix: correctly implement Vite plugin hook filters ([#16760](#16760)) - fix: yield to allow prerender updates to be visible ([#16748](#16748)) - fix: don't destroy partial-line app output with the prerender progress line ([#16750](#16750)) ## @sveltejs/package@3.0.0-next.7 ### Patch Changes - chore: bump `svelte2tsx` to 0.7.60 ([#16745](#16745)) Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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follow-up to #16744 — turns out we need this or
stdoutcan buffer updates for long enough that progress appears stalled.before:
logging-before.mov
after:
logging-after.mov
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