fix: preserve shared client chunk hashes when the app version changes#16324
Merged
Conversation
The global `__sveltekit__abc123` is removed from the JS code in the client runtime, it now only exists in the on-the-fly-generated rendered HTML for app initialization and streaming chunks. That way the SvelteKit runtime stays stable between redeploys as long as it doesn't change, resulting in more cache hits. It's achieve by creating a new payload file, which the global value is passed to, and the other files then use the exported variable to get it. Because some eagerly require it we have to split up the dynamic imports. This should not matter because preloading loads and parses them in parallel anyway. Fixes #12260
|
Install the latest version of pnpm add https://pkg.svelte.dev/@sveltejs/kit/c/3d950c3e7c54c2274e47c4c10f52ec83c81c6376Open in |
🦋 Changeset detectedLatest commit: 3d950c3 The changes in this PR will be included in the next version bump. This PR includes changesets to release 1 package
Not sure what this means? Click here to learn what changesets are. Click here if you're a maintainer who wants to add another changeset to this PR |
![vercel[bot]](https://avatars.githubusercontent.com/in/8329?s=60&v=4){kind=small}
teemingc
reviewed
Jul 13, 2026
teemingc
left a comment
teemingc
left a comment
Member
There was a problem hiding this comment.
Should we bother adding a test for this that compares the client chunk names across two builds run serially?
6 tasks
teemingc
approved these changes
Jul 13, 2026
Rich-Harris
pushed a commit
that referenced
this pull request
Jul 14, 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.8 ### Major Changes - breaking: remove `experimental.handleRenderingErrors` flag ([#16265](#16265)) - breaking: make `getRequest` and `setResponse` synchronous ([#16280](#16280)) - breaking: make `page.url` immutable on a type level ([#16256](#16256)) - breaking: add `refreshAll` and deprecate `invalidateAll` ([#16289](#16289)) ### Minor Changes - feat: allow hyphens in param and matcher names ([#16284](#16284)) - feat: add `ErrorProps` to generated types ([#16272](#16272)) ### Patch Changes - fix: detect destructured `load` and `actions` exports during type generation ([#16329](#16329)) - fix: ensure CSS URL references are absolute when `paths.relative` is `false` ([#16315](#16315)) - fix: exclude deleted cookies from `cookies.getAll()` so it stays consistent with `cookies.get()` ([#16297](#16297)) - fix: reset failed `<svelte:boundary>` on client navigation so a stale `+error.svelte` is torn down ([#16296](#16296)) - fix: preserve shared client chunk hashes when the app version changes ([#16324](#16324)) - fix: align MAX_COOKIE_SIZE with RFC 6265bis ([#16322](#16322)) - fix: use mouseover+mousemove for preloading to reduce events ([#16325](#16325)) ## @sveltejs/package@3.0.0-next.2 ### Minor Changes - feat: warn when using a `.server.` file or file inside a `server` directory without importing a server-only module ([#16266](#16266)) ## @sveltejs/adapter-auto@8.0.0-next.1 ### Patch Changes - fix: allow prerelease versions of SvelteKit 3 to satisfy the peer dependency range ([#16286](#16286)) - Updated dependencies [[`737d119`](737d119), [`fa78efb`](fa78efb), [`07c207e`](07c207e), [`a47071b`](a47071b), [`14d7d5a`](14d7d5a), [`5c38e51`](5c38e51), [`0702baa`](0702baa), [`e1938c6`](e1938c6), [`8293144`](8293144), [`f76d7d9`](f76d7d9), [`ab5c253`](ab5c253), [`b557b1b`](b557b1b), [`4a513e2`](4a513e2)]: - @sveltejs/kit@3.0.0-next.8 ## @sveltejs/adapter-cloudflare@8.0.0-next.2 ### Patch Changes - fix: allow prerelease versions of SvelteKit 3 to satisfy the peer dependency range ([#16286](#16286)) - Updated dependencies [[`737d119`](737d119), [`fa78efb`](fa78efb), [`07c207e`](07c207e), [`a47071b`](a47071b), [`14d7d5a`](14d7d5a), [`5c38e51`](5c38e51), [`0702baa`](0702baa), [`e1938c6`](e1938c6), [`8293144`](8293144), [`f76d7d9`](f76d7d9), [`ab5c253`](ab5c253), [`b557b1b`](b557b1b), [`4a513e2`](4a513e2)]: - @sveltejs/kit@3.0.0-next.8 ## @sveltejs/adapter-netlify@7.0.0-next.3 ### Patch Changes - fix: include `utils.js` in package.json `files` ([#16298](#16298)) - Updated dependencies [[`737d119`](737d119), [`fa78efb`](fa78efb), [`07c207e`](07c207e), [`a47071b`](a47071b), [`14d7d5a`](14d7d5a), [`5c38e51`](5c38e51), [`0702baa`](0702baa), [`e1938c6`](e1938c6), [`8293144`](8293144), [`f76d7d9`](f76d7d9), [`ab5c253`](ab5c253), [`b557b1b`](b557b1b), [`4a513e2`](4a513e2)]: - @sveltejs/kit@3.0.0-next.8 ## @sveltejs/adapter-node@6.0.0-next.3 ### Patch Changes - fix: allow prerelease versions of SvelteKit 3 to satisfy the peer dependency range ([#16286](#16286)) - Updated dependencies [[`737d119`](737d119), [`fa78efb`](fa78efb), [`07c207e`](07c207e), [`a47071b`](a47071b), [`14d7d5a`](14d7d5a), [`5c38e51`](5c38e51), [`0702baa`](0702baa), [`e1938c6`](e1938c6), [`8293144`](8293144), [`f76d7d9`](f76d7d9), [`ab5c253`](ab5c253), [`b557b1b`](b557b1b), [`4a513e2`](4a513e2)]: - @sveltejs/kit@3.0.0-next.8 ## @sveltejs/adapter-static@4.0.0-next.1 ### Patch Changes - fix: allow prerelease versions of SvelteKit 3 to satisfy the peer dependency range ([#16286](#16286)) - Updated dependencies [[`737d119`](737d119), [`fa78efb`](fa78efb), [`07c207e`](07c207e), [`a47071b`](a47071b), [`14d7d5a`](14d7d5a), [`5c38e51`](5c38e51), [`0702baa`](0702baa), [`e1938c6`](e1938c6), [`8293144`](8293144), [`f76d7d9`](f76d7d9), [`ab5c253`](ab5c253), [`b557b1b`](b557b1b), [`4a513e2`](4a513e2)]: - @sveltejs/kit@3.0.0-next.8 ## @sveltejs/adapter-vercel@7.0.0-next.2 ### Patch Changes - fix: allow prerelease versions of SvelteKit 3 to satisfy the peer dependency range ([#16286](#16286)) - Updated dependencies [[`737d119`](737d119), [`fa78efb`](fa78efb), [`07c207e`](07c207e), [`a47071b`](a47071b), [`14d7d5a`](14d7d5a), [`5c38e51`](5c38e51), [`0702baa`](0702baa), [`e1938c6`](e1938c6), [`8293144`](8293144), [`f76d7d9`](f76d7d9), [`ab5c253`](ab5c253), [`b557b1b`](b557b1b), [`4a513e2`](4a513e2)]: - @sveltejs/kit@3.0.0-next.8 Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
The global
__sveltekit__abc123is removed from the JS code in the client runtime, it now only exists in the on-the-fly-generated rendered HTML for app initialization and streaming chunks.That way the SvelteKit runtime stays stable between redeploys as long as it doesn't change, resulting in more cache hits.
It's achieve by creating a new payload file, which the global value is passed to, and the other files then use the exported variable to get it. Because some eagerly require it we have to split up the dynamic imports. This should not matter because preloading loads and parses them in parallel anyway.
Fixes #12260
Alternative to #16271