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fix: properly handle Date objects in form.fields.set - #16168

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Rich-Harris merged 3 commits into
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fix-issue-16165
Jun 26, 2026
Merged

fix: properly handle Date objects in form.fields.set#16168
Rich-Harris merged 3 commits into
version-3from
fix-issue-16165

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@elliott-with-the-longest-name-on-github

@elliott-with-the-longest-name-on-github elliott-with-the-longest-name-on-github commented Jun 25, 2026

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regression test + fix. Pretty easy, just make sure to clone dates appropriately

closes #16165

Adds a unit test for create_field_proxy verifying that .value() returns a
Date clone (not an empty object) for Date fields. Confirms the fix in
the previous commit for #16165.

▲ Created with [Vercel devbox](https://vercel.com/svelte/~/sandboxes/devboxes/36bbh6d5sw46wwtbuvf2m8jsgsxx)
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🦋 Changeset detected

Latest commit: 5c5acc2

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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@sveltejs/kit Patch

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Comment thread packages/kit/src/runtime/form-utils.js Outdated
if (value instanceof Date) {
return new Date(value.getTime());
}

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Could move into the if below for consistency

@Rich-Harris
Rich-Harris merged commit f9d2240 into version-3 Jun 26, 2026
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@Rich-Harris
Rich-Harris deleted the fix-issue-16165 branch June 26, 2026 01:51
Rich-Harris pushed a commit that referenced this pull request Jul 2, 2026
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# Releases
## @sveltejs/adapter-node@6.0.0-next.2

### Major Changes


- breaking: add `kit.paths.origin` config option, remove
`kit.prerender.origin` and the `adapter-node` `ORIGIN` environment
variable ([#16161](#16161))


### Patch Changes

- Updated dependencies
[[`3c434fb`](3c434fb),
[`a9284e8`](a9284e8),
[`3726a7a`](3726a7a),
[`f9d2240`](f9d2240),
[`a9284e8`](a9284e8),
[`7c040ba`](7c040ba),
[`223eaad`](223eaad),
[`223eaad`](223eaad),
[`3b907d4`](3b907d4),
[`fd628a5`](fd628a5),
[`223eaad`](223eaad),
[`6c1d035`](6c1d035),
[`178eac0`](178eac0),
[`c6562a9`](c6562a9),
[`8eca2ab`](8eca2ab),
[`61cf188`](61cf188)]:
  - @sveltejs/kit@3.0.0-next.6
## @sveltejs/kit@3.0.0-next.6

### Major Changes


- breaking: return no content for 204 responses
([#16200](#16200))


- breaking: form action responses now use the HTTP status code returned
from `fail` ([#16200](#16200))


- breaking: nested server-only directories
([#15685](#15685))


- breaking: add `kit.paths.origin` config option, remove
`kit.prerender.origin` and the `adapter-node` `ORIGIN` environment
variable ([#16161](#16161))


- breaking: don't abort navigation when calling `invalidate(All)` during
navigation ([#16188](#16188))


- breaking: allow `handleError` to influence status code
([#16162](#16162))


- breaking: forbid external redirects by default
([#16198](#16198))


### Minor Changes


- feat: use `type: 'module'` for service worker registrations
([#16169](#16169))


- feat: add `dirty()` property to form fields
([#16208](#16208))


- feat: add `cookies.parse` method
([#16203](#16203))


### Patch Changes


- fix: drain unconsumed request bodies so keep-alive connections don't
hang ([#16170](#16170))


- fix: properly handle Date objects in form.fields.set
([#16168](#16168))


- fix: skip clean fields when programmatically validating forms
([#16208](#16208))


- breaking: experimental remote form `validate({ includeUntouched })`
option is now `all`
([#16208](#16208))


- fix: return `undefined` from `fields.branch.issues()` when only
`fields.branch.leaf` has issues
([#16187](#16187))


- feat: add field.touched() helper to remote form fields
([#14692](#14692))
## @sveltejs/adapter-cloudflare@8.0.0-next.1

### Patch Changes


- fix: avoid overriding user's existing `_headers` rules
([#16183](#16183))

- Updated dependencies
[[`3c434fb`](3c434fb),
[`a9284e8`](a9284e8),
[`3726a7a`](3726a7a),
[`f9d2240`](f9d2240),
[`a9284e8`](a9284e8),
[`7c040ba`](7c040ba),
[`223eaad`](223eaad),
[`223eaad`](223eaad),
[`3b907d4`](3b907d4),
[`fd628a5`](fd628a5),
[`223eaad`](223eaad),
[`6c1d035`](6c1d035),
[`178eac0`](178eac0),
[`c6562a9`](c6562a9),
[`8eca2ab`](8eca2ab),
[`61cf188`](61cf188)]:
  - @sveltejs/kit@3.0.0-next.6

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
@teemingc teemingc linked an issue Jul 3, 2026 that may be closed by this pull request
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[kit v2.68.0] Date are empty object after form.fields.set(data)

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