# SvelteKit changelog

> The web framework for building Svelte applications.

- Vendor: Svelte
- Category: Frameworks & Libraries
- License: MIT
- Language: JavaScript
- Official site: https://svelte.dev/docs/kit
- Tracked by: What's New (https://whatsnew.fyi/product/sveltekit)
- Harvested from: GitHub (sveltejs/kit)
- Entries below: 25 (newest first)

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: release facts (products, versions, dates, links, CVE ids and flags) are open data under CC BY 4.0, from the API at https://whatsnew.fyi/api/v1 or the nightly dataset at https://github.com/whatsnew-fyi/dataset. The summaries, labels and curation are © What's New: quote freely with attribution and a link back; wholesale republication of them is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

## Releases

### 3.1.0

- Date: 2026-10-14
- Version: 3.1.0
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.1.0
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.1.0

- **added** — Support report-sha256, report-sha384, and report-sha512 CSP hash-reporting keywords
- **added** — Emit a sveltekit.endpoint span for +server handlers when server tracing is enabled
- **fixed** — Don't treat every module as server-only when the project is inside a server directory
- **fixed** — Continue deployment recovery when service worker updates fail
- **fixed** — Infer prerendered MIME types from generated files
- **fixed** — Leave generated files alone when their contents are unchanged
- **fixed** — Leave focus in the parent page when an app in an unfocused iframe starts or navigates
- **fixed** — Don't warn about Storybook's Vite plugins that use transformIndexHtml

###### Minor Changes

- feat: support `report-sha256`/`report-sha384`/`report-sha512` CSP hash-reporting keywords ([#17398](https://github.com/sveltejs/kit/pull/17398))

- feat: emit a `sveltekit.endpoint` span for `+server` handlers when server tracing is enabled ([#17325](https://github.com/sveltejs/kit/pull/17325))

###### Patch Changes

- fix: don't treat every module as server-only when the project is inside a `server` directory ([#17376](https://github.com/sveltejs/kit/pull/17376))

- fix: continue deployment recovery when service worker updates fail ([#17440](https://github.com/sveltejs/kit/pull/17440))

- fix: infer prerendered MIME types from generated files ([#17381](https://github.com/sveltejs/kit/pull/17381))

- fix: leave generated files alone when their contents are unchanged ([#17310](https://github.com/sveltejs/kit/pull/17310))

- fix: leave focus in the parent page when an app in an unfocused iframe starts or navigates ([#17297](https://github.com/sveltejs/kit/pull/17297))

- fix: don't warn about Storybook's Vite plugins that use `transformIndexHtml` ([#17373](https://github.com/sveltejs/kit/pull/17373))

### 3.0.1

- Date: 2026-10-06
- Version: 3.0.1
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.1
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.1

- **fixed** — ensure relative imports in generated types work with nodenext module resolution

###### Patch Changes

- fix: ensure relative imports in generated types work with `nodenext` module resolution ([#17351](https://github.com/sveltejs/kit/pull/17351))

### 3.0.0

- Date: 2026-10-01
- Version: 3.0.0
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0

- **removed** — Move remote function types to $app/server
- **removed** — Remove experimental.handleRenderingErrors flag
- **changed** — Make getRequest and setResponse synchronous
- **changed** — TypeScript 6 is now the minimum required version
- **changed** — Refresh all load functions/queries when clicking a link to the current URL
- **changed** — Upgrade to cookie v2 with requirement that cookie names contain only ASCII characters
- **changed** — Require Node 22 or newer
- **changed** — Error when a client-requested single-flight mutation isn't respected by the server, allow the server to explicitly ignore refreshes
- **removed** — Remove the preloadStrategy option; modulepreload will always be used
- **changed** — Default the cookie path option to /
- **removed** — Remove @sveltejs/kit/node/polyfills
- **added** — Add config.kit.output.linkHeaderPreload to preload using the Link header
- **changed** — Require @sveltejs/vite-plugin-svelte v7
- **changed** — Make page.url immutable on a type level
- **removed** — Remove base, assets, and resolveRoute from $app/paths
- **removed** — Remove createEntries from the Builder object passed to adapter functions
- **changed** — Return no content for 204 responses
- **changed** — Rename Pathname type to Path and Asset to AssetPath
- **changed** — Make handle's resolve typed to always return a Promise
- **removed** — Remove Server constructor and SSRManifest from public types

###### Major Changes

- breaking: move remote function types to `$app/server` ([#16740](https://github.com/sveltejs/kit/pull/16740))

- breaking: remove `experimental.handleRenderingErrors` flag ([#16265](https://github.com/sveltejs/kit/pull/16265))

- breaking: make `getRequest` and `setResponse` synchronous ([#16280](https://github.com/sveltejs/kit/pull/16280))

- breaking: TypeScript 6 is now the minimum required version ([#15930](https://github.com/sveltejs/kit/pull/15930))

- breaking: refresh all load functions/queries when clicking a link to the current URL ([#16572](https://github.com/sveltejs/kit/pull/16572))

- breaking: move remote function types to `$app/server` ([#16764](https://github.com/sveltejs/kit/pull/16764))

- breaking: upgrade to `cookie` v2. Cookie names must now contain only ASCII characters ([#13386](https://github.com/sveltejs/kit/pull/13386))

- breaking: require Node 22 or newer ([#12548](https://github.com/sveltejs/kit/pull/12548))

- major: error when a client-requested single-flight mutation isn't respected by the server, allow the server to explicitly ignore refreshes ([#16892](https://github.com/sveltejs/kit/pull/16892))

- breaking: remove the `preloadStrategy` option. `modulepreload` will always be used ([#15256](https://github.com/sveltejs/kit/pull/15256))

- breaking: default the cookie `path` option to `'/'` ([#15398](https://github.com/sveltejs/kit/pull/15398))

- breaking: remove `@sveltejs/kit/node/polyfills` ([#15430](https://github.com/sveltejs/kit/pull/15430))

- breaking: add `config.kit.output.linkHeaderPreload` to preload using the `Link` header ([#15939](https://github.com/sveltejs/kit/pull/15939))

- breaking: require `@sveltejs/vite-plugin-svelte` v7 ([#15371](https://github.com/sveltejs/kit/pull/15371))

- breaking: make `page.url` immutable on a type level ([#16256](https://github.com/sveltejs/kit/pull/16256))

- breaking: remove `base`, `assets`, and `resolveRoute` from `$app/paths` ([#15507](https://github.com/sveltejs/kit/pull/15507))

- breaking: remove `createEntries` from the `Builder` object passed to adapter functions ([#15509](https://github.com/sveltejs/kit/pull/15509))

- breaking: return no content for 204 responses ([#16200](https://github.com/sveltejs/kit/pull/16200))

- breaking: rename `Pathname` type to `Path` and `Asset` to `AssetPath` ([#16430](https://github.com/sveltejs/kit/pull/16430))
  breaking: remove leading `/` from `Path` and `AssetPath`
- breaking: `handle`'s `resolve` is now typed to always return a `Promise` ([#16352](https://github.com/sveltejs/kit/pull/16352))

- breaking: remove `Server` constructor and `SSRManifest` from public types ([#16876](https://github.com/sveltejs/kit/pull/16876))

- breaking: require Svelte config options to be passed through the Vite plugin ([#16007](https://github.com/sveltejs/kit/pull/16007))

- breaking: form action responses now use the HTTP status code returned from `fail` ([#16200](https://github.com/sveltejs/kit/pull/16200))

- breaking: write tsconfig to `node_modules/$app/tsconfig` ([#16458](https://github.com/sveltejs/kit/pull/16458))

- breaking: move `defineParams` and associated types to `@sveltejs/kit/params` ([#16716](https://github.com/sveltejs/kit/pull/16716))

- breaking: remove the deprecated CSRF `checkOrigin` option in favor of `trustedOrigins` ([#15437](https://github.com/sveltejs/kit/pull/15437))

- breaking: the `delta` property now only exists for `popstate` navigation events ([#15522](https://github.com/sveltejs/kit/pull/15522))

- breaking: change `form.error` type from `any` to `App.Error | undefined` ([#16245](https://github.com/sveltejs/kit/pull/16245))

- breaking: remove deprecated `pragma` header in version polling for improved CORS support ([#15428](https://github.com/sveltejs/kit/pull/15428))

- breaking: `goto` now rejects when called with a URL that does not resolve to a route within the app, matching the existing behaviour for external URLs ([#16164](https://github.com/sveltejs/

_[Truncated at 4000 characters — full notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0]_

### 3.0.0-next.32

- Date: 2026-10-01
- Version: 3.0.0-next.32
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.32
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.32
- Labels: Pre-release

- **fixed** — Prevent non-redirect enhanced form results from navigating to another origin
- **fixed** — Escape cache-control headers in prerendered HTML
- **fixed** — Revert route metadata caching to regenerate missing root-route types during sync
- **fixed** — Print builder.log.warn messages to stderr, as documented
- **fixed** — Prevent path traversal when previewing prerendered pages and data on Windows
- **fixed** — Prevent server-side self-fetch fallbacks from following redirects
- **fixed** — Report tsconfig parse errors on Windows

###### Patch Changes

- fix: prevent non-redirect enhanced form results from navigating to another origin ([`91aae35`](https://github.com/sveltejs/kit/commit/91aae3547c6cd2935d79c09a53e27c740100000a))

- fix: escape cache-control headers in prerendered HTML ([`d9d55b5`](https://github.com/sveltejs/kit/commit/d9d55b579743c80ee7cb59c272d864fd9253dae7))

- fix: revert route metadata caching to regenerate missing root-route types during sync ([#17281](https://github.com/sveltejs/kit/pull/17281))

- fix: print `builder.log.warn` messages to stderr, as documented ([#17253](https://github.com/sveltejs/kit/pull/17253))

- fix: prevent path traversal when previewing prerendered pages and data on Windows ([`538edbf`](https://github.com/sveltejs/kit/commit/538edbfa809ac0be634a63c7833f8e0328bfc177))

- chore: standardize remote-function and shared form diagnostics ([#17277](https://github.com/sveltejs/kit/pull/17277))

- fix: prevent server-side self-fetch fallbacks from following redirects ([`b11bb87`](https://github.com/sveltejs/kit/commit/b11bb87679a2c405fff80d218c8c0ac16112383a))

- chore: standardize app template diagnostics ([#17250](https://github.com/sveltejs/kit/pull/17250))

- chore: standardize Vite plugin, build, prerender and adapter diagnostics ([#17253](https://github.com/sveltejs/kit/pull/17253))

- chore: standardize client navigation, preload, snapshot and enhancement diagnostics ([#17276](https://github.com/sveltejs/kit/pull/17276))

- chore: standardize configuration, environment and tsconfig diagnostics ([#17251](https://github.com/sveltejs/kit/pull/17251))

- chore: standardize public API, `$app/*` and deprecated module diagnostics ([#17265](https://github.com/sveltejs/kit/pull/17265))

- chore: standardize route discovery, parameter and route export diagnostics ([#17252](https://github.com/sveltejs/kit/pull/17252))

- chore: standardize server request, hook and page diagnostics ([#17275](https://github.com/sveltejs/kit/pull/17275))

- fix: report tsconfig parse errors on Windows ([#17251](https://github.com/sveltejs/kit/pull/17251))

### 3.0.0-next.31

- Date: 2026-09-30
- Version: 3.0.0-next.31
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.31
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.31
- Labels: Pre-release

- **fixed** — Resolve generated rootDirs from the project root
- **fixed** — Keep history.scrollRestoration set to manual when leaving the page, so a document restored from the back/forward cache does not fall back to browser scroll restoration
- **fixed** — Clear navigating when a shallow popstate aborts an in-flight navigation
- **fixed** — Restore scroll position after back-forward cache returns

###### Patch Changes

- fix: resolve generated rootDirs from the project root ([#17242](https://github.com/sveltejs/kit/pull/17242))

- fix: keep `history.scrollRestoration` set to `manual` when leaving the page, so a document restored from the back/forward cache does not fall back to browser scroll restoration ([#17244](https://github.com/sveltejs/kit/pull/17244))

- fix: clear `navigating` when a shallow popstate aborts an in-flight navigation ([#17118](https://github.com/sveltejs/kit/pull/17118))

- fix: restore scroll position after back-forward cache returns ([#17255](https://github.com/sveltejs/kit/pull/17255))

### 3.0.0-next.30

- Date: 2026-09-27
- Version: 3.0.0-next.30
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.30
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.30
- Labels: Pre-release

- **fixed** — Generate a never Path type when there are no routes
- **fixed** — Set the focus starting point without a fragment navigation to prevent leaking a hashchange to app listeners
- **fixed** — Keep a form.for instance registered when the derived that holds it disconnects and reconnects

###### Patch Changes

- fix: generate a `never` `Path` type when there are no routes ([#17228](https://github.com/sveltejs/kit/pull/17228))

- fix: set the focus starting point without a fragment navigation, which leaked a `hashchange` to app listeners ([#16992](https://github.com/sveltejs/kit/pull/16992))

- fix: keep a `form.for` instance registered when the derived that holds it disconnects and reconnects ([#17230](https://github.com/sveltejs/kit/pull/17230))

### 3.0.0-next.29

- Date: 2026-09-25
- Version: 3.0.0-next.29
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.29
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.29
- Labels: Pre-release

- **fixed** — blur focused SVG elements before the DOM update on navigation
- **fixed** — make cookie options optional

###### Patch Changes

- fix: blur focused SVG elements before the DOM update on navigation ([#16983](https://github.com/sveltejs/kit/pull/16983))

- fix: make cookie options optional ([#17201](https://github.com/sveltejs/kit/pull/17201))

### 3.0.0-next.28

- Date: 2026-09-24
- Version: 3.0.0-next.28
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.28
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.28
- Labels: Pre-release

- **removed** — reject query parameters beginning with `x-sveltekit-`
- **fixed** — support bigint params in server-side route resolution
- **fixed** — generate types when dev server starts
- **fixed** — validate prerender concurrency
- **fixed** — manipulate stack trace for errors that happen while generating prerender inputs
- **fixed** — keep memory flat when precompressing many files
- **fixed** — render remote form actions while prerendering
- **fixed** — ignore Vitest browser loader HTML transforms
- **fixed** — prevent failed link preloads from causing unhandled promise rejections in production
- **fixed** — enforce request body size limits when Content-Type is absent
- **fixed** — ignore nested outDir files outside generated
- **fixed** — follow HTTP redirects from authentication proxies when enhancing form submissions
- **fixed** — support form fields named after Object prototype properties
- **fixed** — evict hashed fetch cache entries after mutations
- **fixed** — keep hash-router links on the current document when resolving paths
- **fixed** — resolve every module entry point using `kit.moduleExtensions`
- **fixed** — send an explicit SSE Accept header for `query.live` requests to avoid buffering by proxies
- **fixed** — exit build workers after completing their tasks while allowing synchronous exit handlers to run
- **fixed** — respect `paths.relative` for server-side route resolution imports
- **fixed** — recommend safe include and exclude patterns in tsconfig warning

###### Major Changes

- breaking: reject query parameters beginning with `x-sveltekit-` ([#17125](https://github.com/sveltejs/kit/pull/17125))

###### Patch Changes

- fix: support bigint params in server-side route resolution ([#17130](https://github.com/sveltejs/kit/pull/17130))

- fix: generate types when dev server starts ([#17034](https://github.com/sveltejs/kit/pull/17034))

- fix: validate prerender concurrency ([#17145](https://github.com/sveltejs/kit/pull/17145))

- fix: manipulate stack trace for errors that happen while generating prerender inputs ([#17113](https://github.com/sveltejs/kit/pull/17113))

- fix: keep memory flat when precompressing many files ([#16993](https://github.com/sveltejs/kit/pull/16993))

- fix: render remote form actions while prerendering ([#17139](https://github.com/sveltejs/kit/pull/17139))

- fix: ignore Vitest browser loader HTML transforms ([#17092](https://github.com/sveltejs/kit/pull/17092))

- fix: prevent failed link preloads from causing unhandled promise rejections in production ([#17181](https://github.com/sveltejs/kit/pull/17181))

- fix: enforce request body size limits when Content-Type is absent ([#17127](https://github.com/sveltejs/kit/pull/17127))

- fix: ignore nested outDir files outside generated ([#17150](https://github.com/sveltejs/kit/pull/17150))

- fix: follow HTTP redirects from authentication proxies when enhancing form submissions ([#17106](https://github.com/sveltejs/kit/pull/17106))

- fix: support form fields named after Object prototype properties ([#17136](https://github.com/sveltejs/kit/pull/17136))

- fix: evict hashed fetch cache entries after mutations ([#17146](https://github.com/sveltejs/kit/pull/17146))

- fix: keep hash-router links on the current document when resolving paths ([#17107](https://github.com/sveltejs/kit/pull/17107))

- fix: resolve every module entry point using `kit.moduleExtensions` ([#17043](https://github.com/sveltejs/kit/pull/17043))

- fix: send an explicit SSE Accept header for `query.live` requests to avoid buffering by proxies ([#17104](https://github.com/sveltejs/kit/pull/17104))

- fix: exit build workers after completing their tasks while allowing synchronous exit handlers to run ([#17135](https://github.com/sveltejs/kit/pull/17135))

- fix: respect `paths.relative` for server-side route resolution imports ([#17056](https://github.com/sveltejs/kit/pull/17056))

- fix: recommend safe include and exclude patterns in tsconfig warning ([#17102](https://github.com/sveltejs/kit/pull/17102))

- chore: configure the server runtime in one place, deprecate `Server` in favour of the `server` object written by `builder.generateServerInstance` ([#17000](https://github.com/sveltejs/kit/pull/17000))

- fix: reject fallback handlers on prerendered endpoints ([#17140](https://github.com/sveltejs/kit/pull/17140))

- fix: record client output extensions in `builder.mimeTypes` ([#16908](https://github.com/sveltejs/kit/pull/16908))

- fix: atomically replace route metadata during sync ([#17096](https://github.com/sveltejs/kit/pull/17096))

- fix: preserve sourcemap source paths when adapters copy build output ([#17082](https://github.com/sveltejs/kit/pull/17082))

- fix: prevent prerender crawler from hanging on unterminated unquoted attributes ([#17141](https://github.com/sveltejs/kit/pull/17141))

- fix: redact nested and typed underscore-prefixed remote form fields after invalid submissions ([#17128](https://github.com/sveltejs/kit/pull/17128))

- fix: correctly serialize Node.js buffers returned from remote functions during SSR ([#17158](https://github.com/sveltejs/kit/pull/17158))

- fix: preserve errors with read-only stack properties ([#17180](https://github.com/sveltejs/kit/pull/17180))

- fix: reject invalid binary form file metadata ([#17149](https://github.com/sveltejs/kit/pull/17149))

### 3.0.0-next.27

- Date: 2026-09-08
- Version: 3.0.0-next.27
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.27
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.27
- Labels: Pre-release

- **added** — Error when a client-requested single-flight mutation is not respected by the server, and allow the server to explicitly ignore refreshes
- **removed** — Remove Server constructor and SSRManifest from public types
- **changed** — Replace builder.generateManifest with builder.generateServerInstance and builder.manifest
- **added** — Allow adapters to receive the Svelte config as a function argument when adding Vite plugins
- **added** — Allow adapters to override getRequest and setResponse during vite dev and vite preview
- **fixed** — Respect paths.relative during development for client files
- **fixed** — Clarify circular imports from src/env
- **changed** — Populate env vars before instrumentation.server.js is evaluated and update the adapter instrumentation API
- **fixed** — Record a history traversal before resolving its route
- **fixed** — Support coordinate objects from image inputs in remote forms
- **fixed** — Walk and copy directories without a stat per file
- **fixed** — Widen remote form fields for union schemas and string enums
- **fixed** — Respond to HEAD requests without a body
- **fixed** — Settle a query's pending request in place when its value arrives through set()
- **fixed** — Prevent await_reactivity_loss warning and state_unsafe_mutation error when the new version detector runs after an await

###### Major Changes

- major: error when a client-requested single-flight mutation isn't respected by the server, allow the server to explicitly ignore refreshes ([#16892](https://github.com/sveltejs/kit/pull/16892))

- breaking: remove `Server` constructor and `SSRManifest` from public types ([#16876](https://github.com/sveltejs/kit/pull/16876))

- breaking: replace the `builder.generateManifest` with `builder.generateServerInstance` and `builder.manifest` ([#16875](https://github.com/sveltejs/kit/pull/16875))

###### Minor Changes

- feat: allow adapters to receive the Svelte config as a function argument when adding Vite plugins ([#16986](https://github.com/sveltejs/kit/pull/16986))

- feat: allow adapters to override `getRequest` and `setResponse` during `vite dev` and `vite preview` ([#16753](https://github.com/sveltejs/kit/pull/16753))

###### Patch Changes

- fix: respect `paths.relative` during development for client files ([#17053](https://github.com/sveltejs/kit/pull/17053))

- fix: clarify circular imports from `src/env` ([#17014](https://github.com/sveltejs/kit/pull/17014))

- breaking: populate env vars before `instrumentation.server.js` is evaluated and update the adapter instrumentation API ([#16303](https://github.com/sveltejs/kit/pull/16303))

- fix: record a history traversal before resolving its route ([#16959](https://github.com/sveltejs/kit/pull/16959))

- fix: support coordinate objects from image inputs in remote forms ([#16944](https://github.com/sveltejs/kit/pull/16944))

- fix: walk and copy directories without a stat per file ([#16995](https://github.com/sveltejs/kit/pull/16995))

- fix: widen remote form fields for union schemas and string enums ([#16937](https://github.com/sveltejs/kit/pull/16937))

- fix: respond to `HEAD` requests without a body ([#17036](https://github.com/sveltejs/kit/pull/17036))

- chore: replace deprecated Vite dev server APIs ([#16961](https://github.com/sveltejs/kit/pull/16961))

- fix: settle a query's pending request in place when its value arrives through `set()` ([#16958](https://github.com/sveltejs/kit/pull/16958))

- fix: prevent `await_reactivity_loss` warning and `state_unsafe_mutation` error when the new version detector runs after an `await` ([#16915](https://github.com/sveltejs/kit/pull/16915))

- chore: parse page options and remote modules with Vite's `parseSync` instead of `acorn` ([#16947](https://github.com/sveltejs/kit/pull/16947))

### 3.0.0-next.25

- Date: 2026-08-21
- Version: 3.0.0-next.25
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.25
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.25
- Labels: Pre-release

- **added** — Add an applyReroute helper for adapters that support split serverless function deployments
- **fixed** — Tweak response logging for remote requests
- **fixed** — Discard invalidation results when a navigation completes while they load
- **fixed** — Route dev-server response logging through Vite's logger so it respects logLevel and customLogger
- **changed** — Build streamed responses from async generators
- **changed** — Read build-time config from defines on the server instead of carrying it in options
- **changed** — Read options from a single module instead of passing it through the server runtime

###### Minor Changes

- feat: add an `applyReroute` helper for adapters that support split serverless function deployments ([#16665](https://github.com/sveltejs/kit/pull/16665))

###### Patch Changes

- chore: build streamed responses from async generators ([#16847](https://github.com/sveltejs/kit/pull/16847))

- fix: tweak response logging for remote requests ([#16865](https://github.com/sveltejs/kit/pull/16865))

- fix: discard invalidation results when a navigation completes while they load ([#16852](https://github.com/sveltejs/kit/pull/16852))

- fix: route dev-server response logging through Vite's logger so it respects `logLevel` and `customLogger` ([#16858](https://github.com/sveltejs/kit/pull/16858))

- chore: read build-time config from defines on the server instead of carrying it in `options` ([#16873](https://github.com/sveltejs/kit/pull/16873))

- chore: read `options` from a single module instead of passing it through the server runtime ([#16871](https://github.com/sveltejs/kit/pull/16871))

### 3.0.0-next.24

- Date: 2026-08-20
- Version: 3.0.0-next.24
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.24
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.24
- Labels: Pre-release

- **added** — Pass the project-relative source filename to the preload filter for fonts
- **added** — Support the QUERY HTTP method in +server.js
- **fixed** — Keep at most one pending body read at a time when deserializing binary forms
- **fixed** — Render the nearest error page when a form submission receives a non-ActionResult error response
- **fixed** — Reuse SSR-cached fetch responses during hydration when a cross-origin URL is not in canonical form
- **fixed** — Resolve client manifest imports against the Vite root
- **fixed** — Render the nearest +error.svelte at the depth it occupies when an error is thrown during rendering
- **fixed** — Wait for the redirect navigation before remote form submissions resolve
- **fixed** — Only suggest a + prefix for route filenames that are valid with the file's extension
- **fixed** — Don't throw from remote form validate() if the form unmounts while it is waiting for a tick
- **fixed** — Rerun load functions when the number of values of a tracked search parameter changes
- **fixed** — Preserve paths.base when vite preview redirects a prerendered page to the correct trailing slash
- **fixed** — Don't crash on interactions inside a form whose controls shadow nodeName
- **fixed** — Correctly read zero-length files at the end of a binary form payload
- **fixed** — Wait for the redirect navigation before prerendered remote functions resolve
- **fixed** — Return root layout server data for error-page data requests to non-existent routes
- **changed** — Parse large streamed frames in linear time

###### Minor Changes

- feat: pass the project-relative source `filename` to the `preload` filter for fonts ([#16443](https://github.com/sveltejs/kit/pull/16443))

- feat: support the `QUERY` HTTP method in `+server.js` ([#16782](https://github.com/sveltejs/kit/pull/16782))

###### Patch Changes

- chore: share the action error result between form actions and remote forms ([#16835](https://github.com/sveltejs/kit/pull/16835))

- perf: parse large streamed frames in linear time ([#16489](https://github.com/sveltejs/kit/pull/16489))

- fix: keep at most one pending body read at a time when deserializing binary forms ([#16783](https://github.com/sveltejs/kit/pull/16783))

- fix: render the nearest error page when a form submission receives a non-ActionResult error response ([#16308](https://github.com/sveltejs/kit/pull/16308))

- chore: generate the env modules in a single pass ([#16833](https://github.com/sveltejs/kit/pull/16833))

- fix: reuse SSR-cached fetch responses during hydration when a cross-origin URL is not in canonical form ([#16339](https://github.com/sveltejs/kit/pull/16339))

- fix: resolve client manifest imports against the Vite root ([#16803](https://github.com/sveltejs/kit/pull/16803))

- fix: render the nearest `+error.svelte` at the depth it occupies when an error is thrown during rendering ([#16526](https://github.com/sveltejs/kit/pull/16526))

- fix: wait for the redirect navigation before remote form submissions resolve ([#16765](https://github.com/sveltejs/kit/pull/16765))

- fix: only suggest a `+` prefix for route filenames that are valid with the file's extension ([#16837](https://github.com/sveltejs/kit/pull/16837))

- fix: don't throw from remote form `validate()` if the form unmounts while it is waiting for a tick ([#16720](https://github.com/sveltejs/kit/pull/16720))

- chore: share navigation completion between navigate and shallow routing ([#16838](https://github.com/sveltejs/kit/pull/16838))

- fix: rerun load functions when the number of values of a tracked search parameter changes ([#16495](https://github.com/sveltejs/kit/pull/16495))

- fix: preserve `paths.base` when `vite preview` redirects a prerendered page to the correct trailing slash ([#16836](https://github.com/sveltejs/kit/pull/16836))

- chore: iterate the query cache maps through a single generator ([#16846](https://github.com/sveltejs/kit/pull/16846))

- fix: don't crash on interactions inside a form whose controls shadow `nodeName` ([#16769](https://github.com/sveltejs/kit/pull/16769))

- chore: remove unused helpers ([#16834](https://github.com/sveltejs/kit/pull/16834))

- fix: correctly read zero-length files at the end of a binary form payload ([#16783](https://github.com/sveltejs/kit/pull/16783))

- chore: remove virtual modules ([#16745](https://github.com/sveltejs/kit/pull/16745))

- fix: wait for the redirect navigation before prerendered remote functions resolve ([#16765](https://github.com/sveltejs/kit/pull/16765))

- chore: share the nearest error page walk between client and server ([#16774](https://github.com/sveltejs/kit/pull/16774))

- fix: return root layout server data for error-page data requests to non-existent routes ([#16376](https://github.com/sveltejs/kit/pull/16376))

- chore: unify the `walk` and `list_files` filesystem helpers ([#16784](https://github.com/sveltejs/kit/pull/16784))

- chore: emit env modules to disk ([#16745](https://github.com/sveltejs/kit/pull/16745))

### 2.70.3

- Date: 2026-08-18
- Version: 2.70.3
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%402.70.3
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/2.70.3

- **fixed** — avoid eagerly reading $app/state dependencies during module initialization

###### Patch Changes

- fix: avoid eagerly reading `$app/state` dependencies during module initialization ([`b61018d`](https://github.com/sveltejs/kit/commit/b61018d0526e827d1ef8cf8e21ef62b92230ae3d))

### 3.0.0-next.23

- Date: 2026-08-13
- Version: 3.0.0-next.23
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.23
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.23
- Labels: Pre-release

- **fixed** — Only print prerender progress newline when necessary

###### Patch Changes

- fix: only print prerender progress newline when necessary ([#16766](https://github.com/sveltejs/kit/pull/16766))

### 3.0.0-next.22

- Date: 2026-08-13
- Version: 3.0.0-next.22
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.22
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.22
- Labels: Pre-release

- **fixed** — respect Vite default log level

###### Patch Changes

- fix: respect Vite default log level ([#16767](https://github.com/sveltejs/kit/pull/16767))

### 3.0.0-next.21

- Date: 2026-08-12
- Version: 3.0.0-next.21
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.21
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.21
- Labels: Pre-release

- **removed** — move remote function types and isValidationError to @sveltejs/kit/remote
- **removed** — move RequestEvent and Cookies to $app/server
- **fixed** — correctly implement Vite plugin hook filters
- **fixed** — yield to allow prerender updates to be visible
- **fixed** — don't destroy partial-line app output with the prerender progress line

###### Major Changes

- breaking: move remote function types and `isValidationError` to `@sveltejs/kit/remote` ([#16764](https://github.com/sveltejs/kit/pull/16764))

- breaking: move `RequestEvent` and `Cookies` to `$app/server` ([#16751](https://github.com/sveltejs/kit/pull/16751))

###### Patch Changes

- fix: correctly implement Vite plugin hook filters ([#16760](https://github.com/sveltejs/kit/pull/16760))

- fix: yield to allow prerender updates to be visible ([#16748](https://github.com/sveltejs/kit/pull/16748))

- fix: don't destroy partial-line app output with the prerender progress line ([#16750](https://github.com/sveltejs/kit/pull/16750))

### 3.0.0-next.20

- Date: 2026-08-11
- Version: 3.0.0-next.20
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.20
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.20
- Labels: Pre-release

- **removed** — Move remote function types to $app/server
- **removed** — Remove #lib definition from paths; requires explicit module extensions
- **removed** — Move hooks-related types to @sveltejs/kit/hooks
- **removed** — Move env-related types to @sveltejs/kit/env
- **added** — Better response logging
- **fixed** — Avoid infinite loop when building with --watch flag

###### Major Changes

- breaking: move remote function types to `$app/server` ([#16740](https://github.com/sveltejs/kit/pull/16740))

- breaking: remove `#lib` definition from `paths`; requires explicit module extensions as a result ([#16736](https://github.com/sveltejs/kit/pull/16736))

- breaking: move hooks-related types to `@sveltejs/kit/hooks` ([#16737](https://github.com/sveltejs/kit/pull/16737))

- breaking: move env-related types to `@sveltejs/kit/env` ([#16739](https://github.com/sveltejs/kit/pull/16739))

###### Minor Changes

- feat: better response logging ([#16744](https://github.com/sveltejs/kit/pull/16744))

###### Patch Changes

- chore: bump `mrmime` to 2.0.1 ([#16745](https://github.com/sveltejs/kit/pull/16745))

- chore: bump `@sveltejs/acorn-typescript` to 1.0.12 ([#16745](https://github.com/sveltejs/kit/pull/16745))

- chore: bump `magic-string` to 1.1.0 ([#16745](https://github.com/sveltejs/kit/pull/16745))

- chore: bump `devalue` to 5.9.0 ([#16745](https://github.com/sveltejs/kit/pull/16745))

- chore: bump `cookie` to 2.0.1 ([#16745](https://github.com/sveltejs/kit/pull/16745))

- chore: bump `acorn` to 8.18.0 ([#16745](https://github.com/sveltejs/kit/pull/16745))

- fix: avoid infinite loop when building with `--watch` flag ([#16632](https://github.com/sveltejs/kit/pull/16632))

### 3.0.0-next.19

- Date: 2026-08-11
- Version: 3.0.0-next.19
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.19
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.19
- Labels: Pre-release

- **removed** — Move `defineParams` and associated types to `@sveltejs/kit/params`
- **changed** — Run all errors through the `handleError` hook
- **removed** — Move `Page`, `ReadonlyURL` and `ReadonlyURLSearchParams` from `@sveltejs/kit` to `$app/state`
- **removed** — Move `BeforeNavigate`, `OnNavigate`, `AfterNavigate`, `Navigation`, `NavigationTarget`, `NavigationType`, `GotoOptions` and the `Navigation*` variant types from `@sveltejs/kit` to `$app/navigation`
- **removed** — Move `ActionResult` and `SubmitFunction` from `@sveltejs/kit` to `$app/forms`
- **removed** — Remove `handleValidationError` and pass remote function validation errors to `handleError` with `kind: 'validation'`
- **added** — Ignore files with + prefix if they contain test/spec/stories
- **fixed** — Rebuild the dev manifest when route files disappear during an incremental update
- **fixed** — Externalize `@opentelemetry/api` to prevent bundler chunk colocation between `instrumentation.server.js` and application code
- **fixed** — Surface prerender errors during development
- **fixed** — Adjust error overload for optional `App.Error` parameters

###### Major Changes

- breaking: move `defineParams` and associated types to `@sveltejs/kit/params` ([#16716](https://github.com/sveltejs/kit/pull/16716))

- breaking: run all errors through the `handleError` hook ([#16664](https://github.com/sveltejs/kit/pull/16664))

- breaking: move `Page`, `ReadonlyURL` and `ReadonlyURLSearchParams` from `@sveltejs/kit` to `$app/state` ([#16694](https://github.com/sveltejs/kit/pull/16694))

- breaking: move `BeforeNavigate`, `OnNavigate`, `AfterNavigate`, `Navigation`, `NavigationTarget`, `NavigationType`, `GotoOptions` and the `Navigation*` variant types from `@sveltejs/kit` to `$app/navigation` ([#16694](https://github.com/sveltejs/kit/pull/16694))

- breaking: move `ActionResult` and `SubmitFunction` from `@sveltejs/kit` to `$app/forms` ([#16694](https://github.com/sveltejs/kit/pull/16694))

- breaking: remove `handleValidationError` and pass remote function validation errors to `handleError` with `kind: 'validation'` ([#16672](https://github.com/sveltejs/kit/pull/16672))

###### Minor Changes

- feat: ignore files with + prefix if they contain test/spec/stories ([#16715](https://github.com/sveltejs/kit/pull/16715))

###### Patch Changes

- fix: rebuild the dev manifest when route files disappear during an incremental update ([#16643](https://github.com/sveltejs/kit/pull/16643))

- fix: externalize `@opentelemetry/api` to prevent bundler chunk colocation between `instrumentation.server.js` and application code ([#16302](https://github.com/sveltejs/kit/pull/16302))

- fix: surface prerender errors during development ([#16507](https://github.com/sveltejs/kit/pull/16507))

- fix: adjust error overload for optional `App.Error` parameters ([#16725](https://github.com/sveltejs/kit/pull/16725))

### 3.0.0-next.18

- Date: 2026-08-10
- Version: 3.0.0-next.18
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.18
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.18
- Labels: Pre-release

- **changed** — adapter Vite plugins are now separated into pre and post plugins

###### Major Changes

- breaking: separate adapter Vite plugins into `pre` and `post` ([#16711](https://github.com/sveltejs/kit/pull/16711))

### 3.0.0-next.17

- Date: 2026-08-10
- Version: 3.0.0-next.17
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.17
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.17
- Labels: Pre-release

- **changed** — Enhanced cross-page form actions now navigate to the action page on success and failure, matching native form behavior
- **deprecated** — The `export const snapshot` pattern is deprecated in favour of the `snapshot` helper
- **added** — Add `snapshot` helper to `$app/navigation`

###### Major Changes

- breaking: enhanced cross-page form actions now navigate to the action page on success and failure, matching native form behavior ([#16684](https://github.com/sveltejs/kit/pull/16684))

###### Minor Changes

- chore: deprecate `export const snapshot` in favour of the `snapshot` helper ([#16687](https://github.com/sveltejs/kit/pull/16687))

- feat: add `snapshot` helper to `$app/navigation` ([#16685](https://github.com/sveltejs/kit/pull/16685))

### 3.0.0-next.16

- Date: 2026-08-07
- Version: 3.0.0-next.16
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.16
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.16
- Labels: Pre-release

- **fixed** — Generate route resolution modules as siblings of .html pages

###### Patch Changes

- fix: generate route resolution modules as siblings of `.html` pages ([#16674](https://github.com/sveltejs/kit/pull/16674))

### 3.0.0-next.15

- Date: 2026-08-07
- Version: 3.0.0-next.15
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.15
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.15
- Labels: Pre-release

- **removed** — Remove `experimental.handleRenderingErrors` flag
- **changed** — Make `getRequest` and `setResponse` synchronous
- **changed** — TypeScript 6 is now the minimum required version
- **changed** — Refresh all load functions/queries when clicking a link to the current URL
- **changed** — Upgrade to `cookie` v2, cookie names must now contain only ASCII characters
- **changed** — Require Node 22 or newer
- **removed** — Remove the `preloadStrategy` option, `modulepreload` will always be used
- **changed** — Default the cookie `path` option to `'/'`
- **removed** — Remove `@sveltejs/kit/node/polyfills`
- **added** — Add `config.kit.output.linkHeaderPreload` to preload using the `Link` header
- **changed** — Require `@sveltejs/vite-plugin-svelte` v7
- **changed** — Make `page.url` immutable on a type level
- **removed** — Remove `base`, `assets`, and `resolveRoute` from `$app/paths`
- **removed** — Remove `createEntries` from the `Builder` object passed to adapter functions
- **changed** — Return no content for 204 responses
- **changed** — Rename `Pathname` type to `Path` and `Asset` to `AssetPath`, and remove leading `/` from `Path` and `AssetPath`
- **changed** — Make `handle`'s `resolve` always return a `Promise`
- **changed** — Require Svelte config options to be passed through the Vite plugin
- **changed** — Form action responses now use the HTTP status code returned from `fail`
- **changed** — Write tsconfig to `node_modules/$app/tsconfig`
- **removed** — Remove the deprecated CSRF `checkOrigin` option in favor of `trustedOrigins`

###### Major Changes

- breaking: remove `experimental.handleRenderingErrors` flag

- breaking: make `getRequest` and `setResponse` synchronous

- breaking: TypeScript 6 is now the minimum required version

- breaking: refresh all load functions/queries when clicking a link to the current URL

- breaking: upgrade to `cookie` v2. Cookie names must now contain only ASCII characters

- breaking: require Node 22 or newer

- breaking: remove the `preloadStrategy` option. `modulepreload` will always be used

- breaking: default the cookie `path` option to `'/'`

- breaking: remove `@sveltejs/kit/node/polyfills`

- breaking: add `config.kit.output.linkHeaderPreload` to preload using the `Link` header

- breaking: require `@sveltejs/vite-plugin-svelte` v7

- breaking: make `page.url` immutable on a type level

- breaking: remove `base`, `assets`, and `resolveRoute` from `$app/paths`

- breaking: remove `createEntries` from the `Builder` object passed to adapter functions

- breaking: return no content for 204 responses

- breaking: rename `Pathname` type to `Path` and `Asset` to `AssetPath`
  breaking: remove leading `/` from `Path` and `AssetPath`
- breaking: `handle`'s `resolve` is now typed to always return a `Promise`

- breaking: require Svelte config options to be passed through the Vite plugin

- breaking: form action responses now use the HTTP status code returned from `fail`

- breaking: write tsconfig to `node_modules/$app/tsconfig`

- breaking: remove the deprecated CSRF `checkOrigin` option in favor of `trustedOrigins`

- breaking: the `delta` property now only exists for `popstate` navigation events

- breaking: change `form.error` type from `any` to `App.Error | undefined`

- breaking: remove deprecated `pragma` header in version polling for improved CORS support

- breaking: `goto` now rejects when called with a URL that does not resolve to a route within the app, matching the existing behaviour for external URLs

- breaking: require Svelte 5.56.4 or newer

- breaking: error on `event.url`, `event.params` and `event.route` access inside queries

- breaking: delete `$service-worker` module

- breaking: move `defineEnvVars` to `@sveltejs/kit/env`

- breaking: nested server-only directories

- feat: allow adapters to provide additional Vite plugins

- breaking: replace the `$lib` alias with `#lib` and remove `files.lib` config.

- chore: change `error`, `isHttpError`, `redirect`, and `isRedirect` to refer to public type instead of internal class

- breaking: add 'error' result type to `preloadData`

- breaking: detect new deployments on data, remote, and form action responses, tab focus, and visibility change, and default `version.pollInterval` to 1 hour

- breaking: disallow cross-origin form submissions without a `Content-Type` header

- breaking: Server-only directories (`/server/` in the path) are now treated as server-only everywhere inside the project (except `src/routes` and the assets directory)

- breaking: `config` exported from a universal route file takes precedence over a server one

- breaking: require Vite 8. Provides new functionality even for existing Vite 8 users such as faster builds with Vite hook filters and more powerful SvelteKit adapters with the Vite environment API

- breaking: remove `data-sveltekit-*` option `'off'` in favour of `false`

- breaking: move tracing out of the experimental namespace and remove the instrumentation flag

- breaking: add `kit.paths.origin` config option, remove `kit.prerender.origin` and the `adapter-node` `ORIGIN` environment variable

- breaking: remove `$app/stores`

- breaking: add `refreshAll` and deprecate `invalidateAll`

- breaking: disallow `*.remote.ts/js` files unless `experimental.remoteFunctions` is enabled

- breaking: replace the `noScroll` and `keepFocus` options of `goto` with a single `reset` option, and the `data-sveltekit-noscroll` and `data-sveltekit-keepfocus` attributes with `data-sveltekit-reset`

- breaking: don't abort navigation when calling

_[Truncated at 4000 characters — full notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.15]_

### 3.0.0-next.14

- Date: 2026-08-04
- Version: 3.0.0-next.14
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.14
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.14
- Labels: Pre-release

- **changed** — Refresh all load functions and queries when clicking a link to the current URL
- **changed** — Only include routes with a +page or +server in RouteId
- **changed** — Require Node 22.17
- **changed** — preloadCode now takes a route ID instead of a pathname, and route IDs are not prefixed with paths.base
- **removed** — Remove deprecated .run() method from live queries
- **added** — Return the list of compressed files from builder.compress
- **added** — Add page and endpoint booleans to $app/manifest's routes and export a ManifestRoute type
- **added** — Add PageRouteId and EndpointRouteId types to $app/types
- **fixed** — Generate valid Path types for routes with optional or rest params, several params in one segment, or escape sequences
- **fixed** — Decode all numeric character references above ffff when crawling prerendered pages
- **fixed** — Don't treat Object.prototype members as param matchers during validation
- **fixed** — Exclude routes without a page or endpoint from routes in $app/manifest and remove directories with no route files from LayoutParams
- **fixed** — Record the mime types of prerendered paths in the server manifest
- **fixed** — Expand [x+nn] and [u+nnnn] escape sequences when resolving a route id to a pathname
- **fixed** — Allow routes to contain [ and ] via the [x+5b] and [x+5d] escapes
- **fixed** — Import resolved peer dependencies as file URLs so project-relative resolution works on Windows
- **fixed** — Write generated tsconfig to node_modules/$app/tsconfig.json so that tools with simplified tsconfig resolution can find it
- **fixed** — Prerender and crawl pages whose content-type header carries a charset parameter
- **fixed** — Stream promised read results lazily instead of eagerly buffering them

###### Major Changes

- breaking: refresh all load functions/queries when clicking a link to the current URL ([#16572](https://github.com/sveltejs/kit/pull/16572))

- breaking: only include routes with a `+page` or `+server` in `RouteId` ([#16580](https://github.com/sveltejs/kit/pull/16580))

- breaking: require Node 22.17 ([#16597](https://github.com/sveltejs/kit/pull/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](https://github.com/sveltejs/kit/pull/16576))

- breaking: remove deprecated `.run()` method from live queries ([#16573](https://github.com/sveltejs/kit/pull/16573))

###### Minor Changes

- feat: return the list of compressed files from `builder.compress` ([#16566](https://github.com/sveltejs/kit/pull/16566))

- feat: add `page` and `endpoint` booleans to `$app/manifest`'s `routes`, and export a `ManifestRoute` type ([#16594](https://github.com/sveltejs/kit/pull/16594))

- feat: add `PageRouteId` and `EndpointRouteId` to `$app/types` ([#16594](https://github.com/sveltejs/kit/pull/16594))

###### Patch Changes

- fix: generate valid `Path` types for routes with optional or rest params, several params in one segment, or escape sequences ([#16577](https://github.com/sveltejs/kit/pull/16577))

- fix: decode all numeric character references, including above `ffff`, when crawling prerendered pages ([#16611](https://github.com/sveltejs/kit/pull/16611))

- chore: deduplicate request hashing for serialized fetch responses ([#16499](https://github.com/sveltejs/kit/pull/16499))

- fix: don't treat `Object.prototype` members as param matchers during validation ([#16612](https://github.com/sveltejs/kit/pull/16612))

- fix: exclude routes without a page or endpoint from `routes` in `$app/manifest`, and remove directories with no route files from `LayoutParams` ([#16588](https://github.com/sveltejs/kit/pull/16588))

- chore: reuse base64 and text decoding helpers ([#16608](https://github.com/sveltejs/kit/pull/16608))

- fix: record the mime types of prerendered paths in the server manifest ([#16564](https://github.com/sveltejs/kit/pull/16564))

- chore: only generate each route's resolution module once when prerendering ([#16576](https://github.com/sveltejs/kit/pull/16576))

- fix: expand `[x+nn]` and `[u+nnnn]` escape sequences when resolving a route id to a pathname ([#16570](https://github.com/sveltejs/kit/pull/16570))

- fix: allow routes to contain `[` and `]` via the `[x+5b]` and `[x+5d]` escapes ([#16569](https://github.com/sveltejs/kit/pull/16569))

- chore: remove the dead `SSRState.fallback` field and name the server state fork semantics ([#16598](https://github.com/sveltejs/kit/pull/16598))

- fix: import resolved peer dependencies as file URLs so project-relative resolution works on Windows ([#16618](https://github.com/sveltejs/kit/pull/16618))

- fix: write generated tsconfig to `node_modules/$app/tsconfig.json` so that tools with simplified tsconfig resolution can find it ([#16589](https://github.com/sveltejs/kit/pull/16589))

- fix: prerender and crawl pages whose `content-type` header carries a `charset` parameter ([#16567](https://github.com/sveltejs/kit/pull/16567))

- fix: stream promised `read` results lazily instead of eagerly buffering them ([#16622](https://github.com/sveltejs/kit/pull/16622))

- fix: correctly decode `[u+nnnn]` escape sequences above `ffff` ([#16611](https://github.com/sveltejs/kit/pull/16611))

### 2.70.2

- Date: 2026-07-29
- Version: 2.70.2
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%402.70.2
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/2.70.2

- **fixed** — prevent quadratic backtracking in Accept header content negotiation

###### Patch Changes

- fix: prevent quadratic backtracking in `Accept` header content negotiation ([#1](https://github.com/homebase-garage/igeclouds.github.io/pull/1))

### 3.0.0-next.13

- Date: 2026-07-29
- Version: 3.0.0-next.13
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.13
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.13
- Labels: Pre-release

- **removed** — Replace the noScroll and keepFocus options of goto with a single reset option, and the data-sveltekit-noscroll and data-sveltekit-keepfocus attributes with data-sveltekit-reset
- **deprecated** — Deprecate error(status, {...}) in favour of error(status, message, {...})
- **added** — Add shallow routing to goto and deprecate pushState and replaceState
- **added** — Preserve page state set through goto(..., { state, persistState: true }) across reloads
- **fixed** — Avoid Vite dev server reload on initial page request
- **fixed** — Don't set a null accept-language header on internal fetch sub-requests when the incoming request has none
- **fixed** — Correctly detect prerendered paths in server fetch when paths.base is set
- **fixed** — Don't duplicate remote modules in the generated manifest
- **fixed** — Exclude inlined files from the page's $app/manifest immutable list
- **fixed** — Don't attempt to serialize fetch responses when the request body is not a string or TypedArray
- **fixed** — Read the error status of App.Error in the prerender and query.live remote functions
- **fixed** — Propagate errors from prerendered remote responses instead of re-running the function
- **fixed** — Respect the status returned from handleError on the fallback error page served to error-page sub-requests
- **fixed** — Skip unnecessary version.json checks if updated.current is already true
- **fixed** — Allow generation of $app/tsconfig without TypeScript installed
- **fixed** — Only include _app/immutable files in $app/manifest's immutable in the service worker
- **fixed** — Log errors caught by the Vite dev server handler
- **fixed** — Resolve root per instance of the SvelteKit Vite plugin
- **fixed** — Ignore path casing differences when warning about overridden Vite config on Windows

###### Major Changes

- breaking: replace the `noScroll` and `keepFocus` options of `goto` with a single `reset` option, and the `data-sveltekit-noscroll` and `data-sveltekit-keepfocus` attributes with `data-sveltekit-reset` ([#16558](https://github.com/sveltejs/kit/pull/16558))

- breaking: deprecate `error(status, {...})` in favour of `error(status, message, {...})` ([#16540](https://github.com/sveltejs/kit/pull/16540))

###### Minor Changes

- feat: add shallow routing to `goto` and deprecate `pushState` and `replaceState` ([#16449](https://github.com/sveltejs/kit/pull/16449))

- feat: preserve page state set through `goto(..., { state, persistState: true })` across reloads ([#16449](https://github.com/sveltejs/kit/pull/16449))

###### Patch Changes

- chore: deduplicate repeated CSP directive handling ([#16498](https://github.com/sveltejs/kit/pull/16498))

- fix: avoid Vite dev server reload on initial page request ([#16553](https://github.com/sveltejs/kit/pull/16553))

- fix: don't set a `null` `accept-language` header on internal `fetch` sub-requests when the incoming request has none ([#16527](https://github.com/sveltejs/kit/pull/16527))

- fix: correctly detect prerendered paths in server `fetch` when `paths.base` is set ([#16525](https://github.com/sveltejs/kit/pull/16525))

- fix: don't duplicate remote modules in the generated manifest ([#16532](https://github.com/sveltejs/kit/pull/16532))

- fix: exclude inlined files from the page's `$app/manifest` immutable list ([#16531](https://github.com/sveltejs/kit/pull/16531))

- perf: avoid quadratic remote form issue merging ([#16493](https://github.com/sveltejs/kit/pull/16493))

- fix: don't attempt to serialize fetch responses when the request body is not a string or TypedArray ([#16501](https://github.com/sveltejs/kit/pull/16501))

- fix: read the error status of `App.Error` in the `prerender` and `query.live` remote functions ([#16529](https://github.com/sveltejs/kit/pull/16529))

- fix: propagate errors from prerendered remote responses instead of re-running the function ([#16535](https://github.com/sveltejs/kit/pull/16535))

- fix: respect the status returned from `handleError` on the fallback error page served to error-page sub-requests ([#16528](https://github.com/sveltejs/kit/pull/16528))

- fix: skip unnecessary `version.json` checks if `updated.current` is already `true` ([#16518](https://github.com/sveltejs/kit/pull/16518))

- fix: allow generation of $app/tsconfig without TypeScript installed ([#16534](https://github.com/sveltejs/kit/pull/16534))

- perf: use a `Set` to check element ids when validating fragment links during prerendering ([#16494](https://github.com/sveltejs/kit/pull/16494))

- fix: only include `_app/immutable` files in `$app/manifest`'s `immutable` in the service worker ([#16531](https://github.com/sveltejs/kit/pull/16531))

- fix: log errors caught by the Vite dev server handler ([#16550](https://github.com/sveltejs/kit/pull/16550))

- fix: resolve `root` per instance of the SvelteKit Vite plugin ([#16513](https://github.com/sveltejs/kit/pull/16513))

- fix: ignore path casing differences when warning about overridden Vite config on Windows ([#16545](https://github.com/sveltejs/kit/pull/16545))

- fix: preserve the current URL search parameters when submitting a remote form without JavaScript ([#16373](https://github.com/sveltejs/kit/pull/16373))

- fix: treeshake prerendered remote functions in the right chunks ([#16533](https://github.com/sveltejs/kit/pull/16533))

- fix: error during development if the adapter does not support instrumentation and it exists ([#16548](https://github.com/sveltejs/kit/pull/16548))

### 3.0.0-next.12

- Date: 2026-07-24
- Version: 3.0.0-next.12
- Original notes: https://github.com/sveltejs/kit/releases/tag/%40sveltejs/kit%403.0.0-next.12
- Permalink: https://whatsnew.fyi/product/sveltekit/releases/3.0.0-next.12
- Labels: Pre-release

- **removed** — Rename Pathname type to Path and Asset to AssetPath
- **removed** — Remove leading / from Path and AssetPath
- **changed** — Write tsconfig to node_modules/$app/tsconfig
- **removed** — Error on event.url, event.params and event.route access inside queries
- **removed** — Delete $service-worker module
- **changed** — Detect new deployments on data, remote, and form action responses, tab focus, and visibility change, and default version.pollInterval to 1 hour
- **added** — Add $app/manifest module with immutable, assets, prerendered, and routes exports
- **added** — Validate that all remote form fields were created with form.fields.foo.as(...)
- **added** — Make $app/paths importable in service workers
- **added** — Add $app/service-worker module
- **added** — Improve tsconfig validation
- **fixed** — Default cookies to secure to false during development
- **fixed** — Allow undefined values to be passed to form field .as(...) where applicable
- **fixed** — Include queries refreshed from within another query in the serialized response
- **fixed** — Generate sourcemaps for remote modules
- **fixed** — Avoid empty getElementById() call on hash routing navigation
- **fixed** — Warn if hook files are spelled as "hook" instead of "hooks"
- **deprecated** — Deprecate the alias option
- **fixed** — Prevent infinite loops when server-side queries refresh each other in a cycle during the single-flight drain

###### Major Changes

- breaking: rename `Pathname` type to `Path` and `Asset` to `AssetPath` ([#16430](https://github.com/sveltejs/kit/pull/16430))
  breaking: remove leading `/` from `Path` and `AssetPath`
- breaking: write tsconfig to `node_modules/$app/tsconfig` ([#16458](https://github.com/sveltejs/kit/pull/16458))

- breaking: error on `event.url`, `event.params` and `event.route` access inside queries ([#16452](https://github.com/sveltejs/kit/pull/16452))

- breaking: delete `$service-worker` module ([#16450](https://github.com/sveltejs/kit/pull/16450))

- breaking: detect new deployments on data, remote, and form action responses, tab focus, and visibility change, and default `version.pollInterval` to 1 hour ([#16496](https://github.com/sveltejs/kit/pull/16496))

###### Minor Changes

- feat: add `$app/manifest` module with `immutable`, `assets`, `prerendered`, and `routes` exports ([#16372](https://github.com/sveltejs/kit/pull/16372))

- feat: validate that all remote form fields were created with form.fields.foo.as(...) ([#16331](https://github.com/sveltejs/kit/pull/16331))

- feat: make `$app/paths` importable in service workers ([#16441](https://github.com/sveltejs/kit/pull/16441))

- feat: `$app/service-worker` module ([#16458](https://github.com/sveltejs/kit/pull/16458))

- feat: better tsconfig validation ([#16458](https://github.com/sveltejs/kit/pull/16458))

- fix: default cookies to `secure` to `false` during development ([#16462](https://github.com/sveltejs/kit/pull/16462))

###### Patch Changes

- fix: allow `undefined` values to be passed to form field `.as(...)` where applicable ([#15681](https://github.com/sveltejs/kit/pull/15681))

- fix: include queries refreshed from within another query in the serialized response ([#16461](https://github.com/sveltejs/kit/pull/16461))

- fix: generate sourcemaps for remote modules ([#16440](https://github.com/sveltejs/kit/pull/16440))

- fix: avoid empty getElementById() call on hash routing navigation ([#16448](https://github.com/sveltejs/kit/pull/16448))

- fix: warn if hook files are spelled as "hook" instead of "hooks" ([#16483](https://github.com/sveltejs/kit/pull/16483))

- chore: deprecate the `alias` option ([#16470](https://github.com/sveltejs/kit/pull/16470))

- fix: prevent infinite loops when server-side queries refresh each other in a cycle during the single-flight drain ([#16461](https://github.com/sveltejs/kit/pull/16461))

- fix: populate `version` in service workers ([#16434](https://github.com/sveltejs/kit/pull/16434))

- fix: resolve remote modules as external during dev prebundling so packages can re-export remote functions ([#16426](https://github.com/sveltejs/kit/pull/16426))

- fix: refetch route-tracking server data when navigating away from an error page ([#16381](https://github.com/sveltejs/kit/pull/16381))

- fix: serialize `query(...).set(...)`/`query(...).refresh()` values into the rendered HTML when called from within a query during SSR ([#16461](https://github.com/sveltejs/kit/pull/16461))

- fix: fall back to the page's form actions when a sibling endpoint has no POST handler ([#16349](https://github.com/sveltejs/kit/pull/16349))

- fix: return a lightweight 404 instead of rendering the error page for subresource requests ([#16463](https://github.com/sveltejs/kit/pull/16463))

- fix: preserve stripped path prefixes by making trailing-slash redirects relative ([#16431](https://github.com/sveltejs/kit/pull/16431))

- chore: deduplicate type-stripping logic in `tweak_types` ([#16454](https://github.com/sveltejs/kit/pull/16454))

- fix: more informative error message when running a command inside a query or prerender function ([`eb5c973`](https://github.com/sveltejs/kit/commit/eb5c9737b6d74c53f572b3e047faa5947052ced2))