fix: deep partial .value() and .set(...) types for forms#14837
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teemingc merged 5 commits intosveltejs:mainfrom Feb 25, 2026
Merged
fix: deep partial .value() and .set(...) types for forms#14837teemingc merged 5 commits intosveltejs:mainfrom
.value() and .set(...) types for forms#14837teemingc merged 5 commits intosveltejs:mainfrom
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You're not really validating on If the user tries to submit the form with the initial values, it would make sense the validation would fail. |
teemingc
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…s#14837) fixes sveltejs#14835 The form's default values are an empty object `{}` when defaults are not provided by `.set()`. Therefore, the `.value()` getter should return a deep partial of the schema type as all values are initially undefined. Plus, deep partial `.set()` allows setting _some_, but not _all_ values initially. [`DeepPartial` Demo](https://www.typescriptlang.org/play/?noUncheckedIndexedAccess=true#code/C4TwDgpgBAIhFgAoEMBOwCWyA2AeAKgHxQC8AsAFACQ+UEAHsBAHYAmAzlAEoQDGA9qla5EqfpHQgA0hBAAaKAFdmAa2b8A7s2IAfJavVaA2gF1KVKgH4oAb3MWqRqVAzMoK2fwBmUfCcsAXL5OJnSMLBzcfILCouIQkjLy+mqa2lB6yqnGodZwCCjoWHj4IcRBpVImANz2VAC+9hUZ+qwQXq4QrLUUlALM7MBQTINB+UhomDi4dhRQ81D8AEYAVkE2wxCjsMhMUPVylAtQaKjrm9uDqK4A5vumh3MLqHxBPAJCuFe3Ct-MN4RKPViCRbJQgeCKCNgAA6ZYrSww6GUAD0KIWAD1LJRoTDToijAAGfxIrbAVHo+ZYnFkmEvXiI5EUNGY7G9Cj9QYXYAAJjG8AmRWmfwBpCgACJxRTjligA) --- ### Please don't delete this checklist! Before submitting the PR, please make sure you do the following: - [x] 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 - [x] This message body should clearly illustrate what problems it solves. - [ ] Ideally, include a test that fails without this PR but passes with it. ### Tests - [x] Run the tests with `pnpm test` and lint the project with `pnpm lint` and `pnpm check` ### Changesets - [x] 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 changeset messages with `feat:`, `fix:`, or `chore:`. ### Edits - [x] Please ensure that 'Allow edits from maintainers' is checked. PRs without this option may be closed. --------- Co-authored-by: Tee Ming <chewteeming01@gmail.com>
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fixes #14835
The form's default values are an empty object
{}when defaults are not provided by.set(). Therefore, the.value()getter should return a deep partial of the schema type as all values are initially undefined.Plus, deep partial
.set()allows setting some, but not all values initially.DeepPartialDemoPlease don't delete this checklist! Before submitting the PR, please make sure you do the following:
Tests
pnpm testand lint the project withpnpm lintandpnpm checkChangesets
pnpm changesetand following the prompts. Changesets that add features should beminorand those that fix bugs should bepatch. Please prefix changeset messages withfeat:,fix:, orchore:.Edits