fix: allow async {@const} in more places
#16643
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🦋 Changeset detectedLatest commit: d41d821 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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Implemented by reusing the `async_body` function inside `Fragment.js`. Also removes the ability to reference a `{@const ...}` of an implicit child inside a boundary pending/failed snippet:
- existing duplication of consts can have unintended side effects, e.g. async consts would unexpectedly called multiple times
- what if a const is the reason for the failure of a boundary, but is then referenced in the failed snippet?
- what if an async const is referenced in a pending snippet? deadlock
- inconsistent with how it behaves for components where this already does not work
Implemented via the experimental flag so the behavior change only applies there as this is a breaking change strictly speaking. Also added a compiler error for this.
closes #16462
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I had the same issue, and this PR fixed it for me. |
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As in #16571, the value of See Playground |
Ocean-OS
approved these changes
Aug 22, 2025
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@philipplentzen can you open an issue for this? thanks |
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Implemented by reusing the
async_bodyfunction insideFragment.js. Also removes the ability to reference a{@const ...}of an implicit child inside a boundary pending/failed snippet:Implemented via / only taking effect with the experimental flag so the behavior change only applies there as this is a breaking change strictly speaking. Also added a compiler error for this.
closes #16462
Before submitting the PR, please make sure you do the following
feat:,fix:,chore:, ordocs:.packages/svelte/src, add a changeset (npx changeset).Tests and linting
pnpm testand lint the project withpnpm lint