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fix: pass all unknown options from the sveltekit Vite plugin through to vite-plugin-svelte#16010

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Rich-Harris:fix-vite-plugin-svelte-passthrough
Jun 16, 2026
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fix: pass all unknown options from the sveltekit Vite plugin through to vite-plugin-svelte#16010
Rich-Harris merged 4 commits into
sveltejs:mainfrom
Rich-Harris:fix-vite-plugin-svelte-passthrough

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@Rich-Harris

@Rich-Harris Rich-Harris commented Jun 10, 2026

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Closes #16009

Previously sveltekit(...) only forwarded a subset of options to vite-plugin-svelte and treated everything else as Kit options, so options like inspector were rejected as unexpected Kit options instead of being passed through.

Changes

  • New internal split_config() helper that plucks out SvelteKit's own options and passes everything else through to vite-plugin-svelte (which does its own validation), making no assumptions about what VPS accepts.
  • Resolves the shared experimental namespace: SvelteKit reads the flags it recognises and forwards the rest to VPS.
  • The lists of Kit option keys are derived from the validation schema (options.js now exports kit_options / kit_experimental_options) so they stay in sync automatically.
  • Types now use Options from vite-plugin-svelte instead of SvelteConfig (kept Pick<SvelteConfig, 'vitePlugin'> for back-compat).
  • Docs + changeset + unit tests (passthrough, experimental splitting, fixture regression with inspector: true).

Please don't delete this checklist! Before submitting the PR, please make sure you do the following:

  • It's really useful if your PR references an issue where it is discussed ahead of time. In many cases, features are absent for a reason. For large changes, please create an RFC: https://github.com/sveltejs/rfcs
  • This message body should clearly illustrate what problems it solves.
  • Ideally, include a test that fails without this PR but passes with it.

Tests

  • Run the tests with pnpm test and lint the project with pnpm lint and pnpm check

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  • If your PR makes a change that should be noted in one or more packages' changelogs, generate a changeset by running pnpm changeset and following the prompts. Changesets that add features should be minor and those that fix bugs should be patch. Please prefix changesets that add features with feat: and bugfixes with fix:.

@Rich-Harris
fix: pass all unknown options from the sveltekit Vite plugin through …
4fb1c3b 
…to vite-plugin-svelte

Previously sveltekit() only forwarded a subset of options to
vite-plugin-svelte, treating everything else (e.g. `inspector`) as Kit
options. Now Kit plucks out its own options and passes everything else
through, and splits the shared `experimental` namespace. Fixes sveltejs#16009
@changeset-bot

changeset-bot Bot commented Jun 10, 2026 •
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🦋 Changeset detected

Latest commit: e249bc2

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package
Name Type
@sveltejs/kit Patch

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

@Rich-Harris

Rich-Harris commented Jun 10, 2026

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disclaimer, this is a pure slop PR, i haven't even looked at the code yet, i'm on a plane

@teemingc

teemingc commented Jun 11, 2026

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Did the LLM just create a fork although you have full access to the sveltejs repo? 😅 because it's a fork, the svelte.dev preview won't build automatically

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Preview: https://svelte-dev-git-preview-kit-16010-svelte.vercel.app/

elliott-with-the-longest-name-on-github
elliott-with-the-longest-name-on-github approved these changes Jun 16, 2026
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lgtm, just a nit

Comment thread packages/kit/src/core/config/index.js Outdated
@Rich-Harris Rich-Harris merged commit f430a68 into sveltejs:main Jun 16, 2026
23 of 24 checks passed
@github-actions github-actions Bot mentioned this pull request Jun 16, 2026
Merged
Rich-Harris pushed a commit that referenced this pull request Jun 18, 2026
@github-actions
Version Packages (#16062)
4c9b8f1 
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 main, this PR will
be updated.


# Releases
## @sveltejs/enhanced-img@0.11.0

### Minor Changes


- feat: export `EnhancedImgAttributes` type
([#15649](#15649))


### Patch Changes


- fix: exclude imports with `?` character from transformation
([#15617](#15617))
## @sveltejs/kit@2.66.0

### Minor Changes


- feat: precompress prerendered `.md` and `.mdx` files
([#15893](#15893))


- feat: warn the user when they forget to make boolean inputs optional
in their form schemas
([#15804](#15804))


### Patch Changes


- fix: blur active element before component update during navigation so
that blur/focusout handlers fire while old component data is still valid
([#15452](#15452))


- fix: ensure `base` is available from `$service-worker` during
development ([#15882](#15882))


- fix: use correct relative asset paths when rendering an error page for
a missing `__data.json` request
([#15884](#15884))


- fix: preserve active `for await` consumers across `query.live`
reconnects ([#16022](#16022))


- fix: settle `query.live` reconnect promise on all exit paths,
preventing `invalidateAll()` from deadlocking when a live query is
offline or interrupted
([#16022](#16022))


- fix: preserve last value when a `query.live` stream completes without
yielding on reconnect
([#16022](#16022))


- fix: remove `types: ['node']` from generated tsconfig to avoid errors
when `@types/node` is not installed
([#15709](#15709))


- fix: prefer pages over endpoints when prerendering
([#16076](#16076))


- fix: restore snapshots after afterNavigate callbacks
([#16066](#16066))


- fix: support `ws:`/`wss:` and `trusted-types-eval` for CSP sources
([#15938](#15938))


- fix: omit empty `file` inputs from remote form data
([#15898](#15898))


- fix: fail early if a route with `+page` and `+server` is marked as
prerenderable ([#16075](#16075))


- fix: wait a tick before resetting forms
([#15805](#15805))


- fix: `preflight` schemas apply correctly when chained before `for`
([#15863](#15863))


- fix: blank page in SPA mode when root layout `load()` throws
([#15798](#15798))


- fix: pass all unknown options from the `sveltekit` Vite plugin through
to `vite-plugin-svelte`
([#16010](#16010))
## @sveltejs/adapter-node@5.5.5

### Patch Changes


- fix: bundle entrypoints alongside app code
([#16069](#16069))


- fix: log the actual adapter-node listening address
([#15899](#15899))

- Updated dependencies
[[`63f1b0b`](63f1b0b),
[`1dbff3f`](1dbff3f),
[`961ba01`](961ba01),
[`d2e108c`](d2e108c),
[`d2e108c`](d2e108c),
[`d2e108c`](d2e108c),
[`860b3c7`](860b3c7),
[`f8c842c`](f8c842c),
[`d3aa5fe`](d3aa5fe),
[`0dd7659`](0dd7659),
[`03e9f66`](03e9f66),
[`57b7b7b`](57b7b7b),
[`4eabadc`](4eabadc),
[`6fbf2b6`](6fbf2b6),
[`276744d`](276744d),
[`8740132`](8740132),
[`f430a68`](f430a68),
[`1c7a8dc`](1c7a8dc)]:
  - @sveltejs/kit@2.66.0
## @sveltejs/adapter-vercel@6.3.4

### Patch Changes


- fix: prevent missing immutable assets from being cached as 404s for a
year ([#16077](#16077))

- Updated dependencies
[[`63f1b0b`](63f1b0b),
[`1dbff3f`](1dbff3f),
[`961ba01`](961ba01),
[`d2e108c`](d2e108c),
[`d2e108c`](d2e108c),
[`d2e108c`](d2e108c),
[`860b3c7`](860b3c7),
[`f8c842c`](f8c842c),
[`d3aa5fe`](d3aa5fe),
[`0dd7659`](0dd7659),
[`03e9f66`](03e9f66),
[`57b7b7b`](57b7b7b),
[`4eabadc`](4eabadc),
[`6fbf2b6`](6fbf2b6),
[`276744d`](276744d),
[`8740132`](8740132),
[`f430a68`](f430a68),
[`1c7a8dc`](1c7a8dc)]:
  - @sveltejs/kit@2.66.0

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
@github-actions github-actions Bot mentioned this pull request Jun 18, 2026
Open
huskas-2189 pushed a commit to huskas-2189/Bookmark that referenced this pull request Jun 20, 2026
@huskas-2189
chore(deps): update dependency @sveltejs/kit to v2.66.0 (#126)
e06d530 
This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [@sveltejs/kit](https://svelte.dev) ([source](https://github.com/sveltejs/kit/tree/HEAD/packages/kit)) | [`2.65.1` → `2.66.0`](https://renovatebot.com/diffs/npm/@sveltejs%2fkit/2.65.1/2.66.0) | ![age](https://developer.mend.io/api/mc/badges/age/npm/@sveltejs%2fkit/2.66.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@sveltejs%2fkit/2.65.1/2.66.0?slim=true) |

---

### Release Notes

<details>
<summary>sveltejs/kit (@&#8203;sveltejs/kit)</summary>

### [`v2.66.0`](https://github.com/sveltejs/kit/blob/HEAD/packages/kit/CHANGELOG.md#2660)

[Compare Source](https://github.com/sveltejs/kit/compare/@sveltejs/kit@2.65.2...@sveltejs/kit@2.66.0)

##### Minor Changes

- feat: precompress prerendered `.md` and `.mdx` files ([#&#8203;15893](sveltejs/kit#15893))

- feat: warn the user when they forget to make boolean inputs optional in their form schemas ([#&#8203;15804](sveltejs/kit#15804))

##### Patch Changes

- fix: blur active element before component update during navigation so that blur/focusout handlers fire while old component data is still valid ([#&#8203;15452](sveltejs/kit#15452))

- fix: ensure `base` is available from `$service-worker` during development ([#&#8203;15882](sveltejs/kit#15882))

- fix: use correct relative asset paths when rendering an error page for a missing `__data.json` request ([#&#8203;15884](sveltejs/kit#15884))

- fix: preserve active `for await` consumers across `query.live` reconnects ([#&#8203;16022](sveltejs/kit#16022))

- fix: settle `query.live` reconnect promise on all exit paths, preventing `invalidateAll()` from deadlocking when a live query is offline or interrupted ([#&#8203;16022](sveltejs/kit#16022))

- fix: preserve last value when a `query.live` stream completes without yielding on reconnect ([#&#8203;16022](sveltejs/kit#16022))

- fix: remove `types: ['node']` from generated tsconfig to avoid errors when `@types/node` is not installed ([#&#8203;15709](sveltejs/kit#15709))

- fix: prefer pages over endpoints when prerendering ([#&#8203;16076](sveltejs/kit#16076))

- fix: restore snapshots after afterNavigate callbacks ([#&#8203;16066](sveltejs/kit#16066))

- fix: support `ws:`/`wss:` and `trusted-types-eval` for CSP sources ([#&#8203;15938](sveltejs/kit#15938))

- fix: omit empty `file` inputs from remote form data ([#&#8203;15898](sveltejs/kit#15898))

- fix: fail early if a route with `+page` and `+server` is marked as prerenderable ([#&#8203;16075](sveltejs/kit#16075))

- fix: wait a tick before resetting forms ([#&#8203;15805](sveltejs/kit#15805))

- fix: `preflight` schemas apply correctly when chained before `for` ([#&#8203;15863](sveltejs/kit#15863))

- fix: blank page in SPA mode when root layout `load()` throws ([#&#8203;15798](sveltejs/kit#15798))

- fix: pass all unknown options from the `sveltekit` Vite plugin through to `vite-plugin-svelte` ([#&#8203;16010](sveltejs/kit#16010))

### [`v2.65.2`](https://github.com/sveltejs/kit/blob/HEAD/packages/kit/CHANGELOG.md#2652)

[Compare Source](https://github.com/sveltejs/kit/compare/@sveltejs/kit@2.65.1...@sveltejs/kit@2.65.2)

##### Patch Changes

- fix: throw an error when prerendering a root +server.js that returns a non-HTML response ([#&#8203;15994](sveltejs/kit#15994))

- fix: decode base64-serialized fetch bodies before caching them for client-side replay ([#&#8203;16034](sveltejs/kit#16034))

- fix: correctly access explicit dynamic public environment variables from prerendered pages and service workers ([#&#8203;16024](sveltejs/kit#16024))

- fix: allow `preloadCode` to be called during initial page load ([#&#8203;16028](sveltejs/kit#16028))

- fix: send `cache-control: private, no-store` on remote function responses so personalized query results can never be cached by shared caches ([#&#8203;16020](sveltejs/kit#16020))

- fix: preserve the HTTP status and error body when a remote function request fails in transport (e.g. a 401/403 from a `handle` hook), instead of reporting a generic 500 ([#&#8203;16021](sveltejs/kit#16021))

- fix: avoid loading universal nodes during build analysis when the app uses a hash router ([#&#8203;16042](sveltejs/kit#16042))

- fix: correctly serve client entry during development when using the pnpm global virtual store ([#&#8203;16045](sveltejs/kit#16045))

- fix: normalize path separators when comparing config ([#&#8203;16037](sveltejs/kit#16037))

- fix: ensure `building` resolves correctly to allow avoiding build-time explicit environment variable validation ([#&#8203;16058](sveltejs/kit#16058))

- fix: prevent unhandled promise rejections when remote function failures are consumed via `current`/`error` instead of `await` ([#&#8203;16018](sveltejs/kit#16018))

</details>

---

### Configuration

📅 **Schedule**: (UTC)

- Branch creation
  - At any time (no schedule defined)
- Automerge
  - At any time (no schedule defined)

🚦 **Automerge**: Disabled because a matching PR was automerged previously.

♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR has been generated by [Mend Renovate](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My4yMjAuMCIsInVwZGF0ZWRJblZlciI6IjQzLjIyMC4wIiwidGFyZ2V0QnJhbmNoIjoiZGV2ZWxvcCIsImxhYmVscyI6W119-->

Reviewed-on: https://codeberg.org/huskas-2189/Bookmark/pulls/126
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Plugin options omit some VPS options

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@Rich-Harris @teemingc @elliott-with-the-longest-name-on-github