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fix: ensure locally mutated bindable props persist with spreading props #13190

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Merged
merged 3 commits into from
Sep 11, 2024

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trueadm
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@trueadm trueadm commented Sep 10, 2024

Fixes #13187. This ensures that we update the local fallback value in the case where the fallback is used so that we persist local changes to bindable props. Otherwise, any incoming changes from the outside will reset the incoming value back to the old fallback value.

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changeset-bot bot commented Sep 10, 2024

🦋 Changeset detected

Latest commit: 7c31b96

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

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@dummdidumm
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This isn't quite correct, because it means the fallback value is now wrong when setting the value to something other than undefined (i.e. the prop is used) and then setting it back to undefined. Playground link that shows the bug

@dummdidumm dummdidumm merged commit 363f4a0 into main Sep 11, 2024
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@dummdidumm dummdidumm deleted the props-default-rest branch September 11, 2024 08:34
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Successfully merging this pull request may close these issues.

Svelte 5: If the reference of restProps changes, all the bindable props will revert back to their default value.
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