svelte

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Floze 2bace308e3 fix: preserve select selection with spread attributes (#18561 ) Fixes #18557 A `<select>` with spread attributes initializes the option mutation observer even when those attributes never provide a `value`. In that case the element has no internal `__value`, but the observer previously treated the missing property as an explicit `undefined` value and deselected every option after an option was added or removed. Only reapply the programmatic selection when `__value` is actually present. This preserves the browser's current selection for spreads without a value while keeping the existing behavior for bindings, including an explicitly stored `undefined` value. A runtime-legacy regression fixture covers both adding and removing an option in client and hydration modes. ### Before submitting - [x] References the existing issue - [x] Uses a `fix:` title - [x] Includes a regression test - [x] Includes a patch changeset for `svelte` ### Test plan - [x] `FILTER=select-spread-preserve-selection pnpm test runtime-legacy --maxWorkers=1` (2 tests passed: client and hydrate) - [x] `git diff --check` - [ ] Full `pnpm test` was not run because the shared host was under resource pressure and broad test processes were explicitly avoided - [ ] `pnpm lint` and `pnpm check` were not run for the same reason - [ ] Targeted repository Prettier check was attempted, but could not start because `prettier-plugin-svelte` required the ungenerated `packages/svelte/compiler/index.js`; no broad build or dependency reinstall was run ### AI disclosure AI-assisted: the implementation, regression test, and pull request text were prepared with OpenAI Codex and reviewed by the contributor. Co-authored-by: Paolo Ricciuti <ricciutipaolo@gmail.com>		2 months ago
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samples	fix: preserve select selection with spread attributes (#18561 )	2 months ago
shared.ts	chore: upgrade to vitest v4 (#18265 )	4 months ago
test.ts	…