fix: stream promised read results lazily - #16622
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Install the latest version of pnpm add https://pkg.svelte.dev/@sveltejs/kit/c/b68825763fa045faa01da6da79c8b066003c23deOpen in Note This PR is from a fork. A maintainer must approve approve each commit before it can be built and installed. |
🦋 Changeset detectedLatest commit: b688257 The changes in this PR will be included in the next version bump. This PR includes changesets to release 1 package
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teemingc
previously requested changes
Aug 3, 2026
Rich-Harris
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teemingc’s stale review
August 3, 2026 20:09
cloudflare supports Readable.from
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Rich-Harris
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Aug 4, 2026
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.14 ### Major Changes - breaking: refresh all load functions/queries when clicking a link to the current URL ([#16572](#16572)) - breaking: only include routes with a `+page` or `+server` in `RouteId` ([#16580](#16580)) - breaking: require Node 22.17 ([#16597](#16597)) - breaking: `preloadCode` now takes a route ID (e.g. `/blog/[slug]`) instead of a pathname. Route IDs are not prefixed with `paths.base` ([#16576](#16576)) - breaking: remove deprecated `.run()` method from live queries ([#16573](#16573)) ### Minor Changes - feat: return the list of compressed files from `builder.compress` ([#16566](#16566)) - feat: add `page` and `endpoint` booleans to `$app/manifest`'s `routes`, and export a `ManifestRoute` type ([#16594](#16594)) - feat: add `PageRouteId` and `EndpointRouteId` to `$app/types` ([#16594](#16594)) ### Patch Changes - fix: generate valid `Path` types for routes with optional or rest params, several params in one segment, or escape sequences ([#16577](#16577)) - fix: decode all numeric character references, including above `ffff`, when crawling prerendered pages ([#16611](#16611)) - chore: deduplicate request hashing for serialized fetch responses ([#16499](#16499)) - fix: don't treat `Object.prototype` members as param matchers during validation ([#16612](#16612)) - fix: exclude routes without a page or endpoint from `routes` in `$app/manifest`, and remove directories with no route files from `LayoutParams` ([#16588](#16588)) - chore: reuse base64 and text decoding helpers ([#16608](#16608)) - fix: record the mime types of prerendered paths in the server manifest ([#16564](#16564)) - chore: only generate each route's resolution module once when prerendering ([#16576](#16576)) - fix: expand `[x+nn]` and `[u+nnnn]` escape sequences when resolving a route id to a pathname ([#16570](#16570)) - fix: allow routes to contain `[` and `]` via the `[x+5b]` and `[x+5d]` escapes ([#16569](#16569)) - chore: remove the dead `SSRState.fallback` field and name the server state fork semantics ([#16598](#16598)) - fix: import resolved peer dependencies as file URLs so project-relative resolution works on Windows ([#16618](#16618)) - fix: write generated tsconfig to `node_modules/$app/tsconfig.json` so that tools with simplified tsconfig resolution can find it ([#16589](#16589)) - fix: prerender and crawl pages whose `content-type` header carries a `charset` parameter ([#16567](#16567)) - fix: stream promised `read` results lazily instead of eagerly buffering them ([#16622](#16622)) - fix: correctly decode `[u+nnnn]` escape sequences above `ffff` ([#16611](#16611)) ## @sveltejs/adapter-auto@8.0.0-next.2 ### Patch Changes - fix: convert resolved adapter path to a file URL before importing, so builds work on Windows ([#16618](#16618)) - Updated dependencies [[`c3f58bb`](c3f58bb), [`b655dc7`](b655dc7), [`a70cc4f`](a70cc4f), [`b325afb`](b325afb), [`e76b3d7`](e76b3d7), [`58f47eb`](58f47eb), [`fe9d8d9`](fe9d8d9), [`0c7bbd7`](0c7bbd7), [`08d7e2a`](08d7e2a), [`f70f679`](f70f679), [`0624b26`](0624b26), [`0624b26`](0624b26), [`f4222ad`](f4222ad), [`089628b`](089628b), [`d8617b3`](d8617b3), [`c7369a1`](c7369a1), [`5e5e592`](5e5e592), [`60057c1`](60057c1), [`f70f679`](f70f679), [`38f1528`](38f1528), [`40092f3`](40092f3), [`ff4247e`](ff4247e), [`79a5de5`](79a5de5), [`a70cc4f`](a70cc4f)]: - @sveltejs/kit@3.0.0-next.14 ## @sveltejs/adapter-cloudflare@8.0.0-next.4 ### Patch Changes - fix: avoid caching immutable asset 404s ([#16627](#16627)) - Updated dependencies [[`c3f58bb`](c3f58bb), [`b655dc7`](b655dc7), [`a70cc4f`](a70cc4f), [`b325afb`](b325afb), [`e76b3d7`](e76b3d7), [`58f47eb`](58f47eb), [`fe9d8d9`](fe9d8d9), [`0c7bbd7`](0c7bbd7), [`08d7e2a`](08d7e2a), [`f70f679`](f70f679), [`0624b26`](0624b26), [`0624b26`](0624b26), [`f4222ad`](f4222ad), [`089628b`](089628b), [`d8617b3`](d8617b3), [`c7369a1`](c7369a1), [`5e5e592`](5e5e592), [`60057c1`](60057c1), [`f70f679`](f70f679), [`38f1528`](38f1528), [`40092f3`](40092f3), [`ff4247e`](ff4247e), [`79a5de5`](79a5de5), [`a70cc4f`](a70cc4f)]: - @sveltejs/kit@3.0.0-next.14 ## @sveltejs/adapter-node@6.0.0-next.7 ### Patch Changes - fix: serve static files with the Content-Type recorded in the manifest ([#16564](#16564)) - fix: don't send `Vary: Accept-Encoding` for assets that were never precompressed ([#16566](#16566)) - Updated dependencies [[`c3f58bb`](c3f58bb), [`b655dc7`](b655dc7), [`a70cc4f`](a70cc4f), [`b325afb`](b325afb), [`e76b3d7`](e76b3d7), [`58f47eb`](58f47eb), [`fe9d8d9`](fe9d8d9), [`0c7bbd7`](0c7bbd7), [`08d7e2a`](08d7e2a), [`f70f679`](f70f679), [`0624b26`](0624b26), [`0624b26`](0624b26), [`f4222ad`](f4222ad), [`089628b`](089628b), [`d8617b3`](d8617b3), [`c7369a1`](c7369a1), [`5e5e592`](5e5e592), [`60057c1`](60057c1), [`f70f679`](f70f679), [`38f1528`](38f1528), [`40092f3`](40092f3), [`ff4247e`](ff4247e), [`79a5de5`](79a5de5), [`a70cc4f`](a70cc4f)]: - @sveltejs/kit@3.0.0-next.14 ## @sveltejs/adapter-static@4.0.0-next.3 ### Patch Changes - fix: avoid caching immutable asset 404s when configuring for Vercel ([#16626](#16626)) - Updated dependencies [[`c3f58bb`](c3f58bb), [`b655dc7`](b655dc7), [`a70cc4f`](a70cc4f), [`b325afb`](b325afb), [`e76b3d7`](e76b3d7), [`58f47eb`](58f47eb), [`fe9d8d9`](fe9d8d9), [`0c7bbd7`](0c7bbd7), [`08d7e2a`](08d7e2a), [`f70f679`](f70f679), [`0624b26`](0624b26), [`0624b26`](0624b26), [`f4222ad`](f4222ad), [`089628b`](089628b), [`d8617b3`](d8617b3), [`c7369a1`](c7369a1), [`5e5e592`](5e5e592), [`60057c1`](60057c1), [`f70f679`](f70f679), [`38f1528`](38f1528), [`40092f3`](40092f3), [`ff4247e`](ff4247e), [`79a5de5`](79a5de5), [`a70cc4f`](a70cc4f)]: - @sveltejs/kit@3.0.0-next.14 ## @sveltejs/enhanced-img@1.0.0-next.3 ### Patch Changes - chore: bump `vite-imagetools` to v11 ([#16630](#16630)) ## @sveltejs/package@3.0.0-next.4 ### Patch Changes - chore: remove dependency on sade ([#16619](#16619)) - fix: import resolved peer dependencies as file URLs so project-relative resolution works on Windows ([#16618](#16618)) - fix: emit declarations when the tsconfig lives above the package root ([#16568](#16568)) Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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Promised
read()results held the whole file in memory instead of streaming it.ReadableStream.fromexists everywhere the server runtime ships (Node 20.6+, workerd, Deno, Vercel edge).Partial reads of a 100MB file drop from 82MB of memory to basically nothing, huge win.