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waltu a956c2bd1f fix: error when using `let:` directives on a component with a `children` snippet (#18873) ... Closes #13864 A `let:` directive on a component only applies to the default slot content. If the content is an explicit `{#snippet children()}` block, the value is never provided, so code like this compiles but fails at runtime with "value is not defined": ```svelte <Child let:value> {#snippet children()}Value is: {value}{/snippet} </Child> ``` This adds a compile error on the directive that points to snippet parameters instead (`{#snippet children({ value })}`, or `{ item: x }` for `let:item={x}`). Components with a `slot` attribute are not affected, since there the directive applies to the component itself. An unused `let:` next to a `children` snippet is also flagged now, but it never had any effect. ### 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] Prefix your PR title with `feat:`, `fix:`, `chore:`, or `docs:`. - [x] This message body should clearly illustrate what problems it solves. - [x] Ideally, include a test that fails without this PR but passes with it. - [x] If this PR changes code within `packages/svelte/src`, add a changeset (`npx changeset`). ### Tests and linting - [x] Run the tests with `pnpm test` and lint the project with `pnpm lint` Co-authored-by: waltu <182410443+waltuov@users.noreply.github.com>		6 days ago
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docs	fix: error when using `let:` directives on a component with a `children` snippet (#18873)	6 days ago