@ -246,6 +246,20 @@ We can tighten things up further by declaring a generic, so that `data` and `row
</script>
```
## Exporting snippets
Snippets declared at the top level of a `.svelte` file can be exported from a `<script module>` for use in other components, provided they don't reference any declarations in a non-module `<script>` (whether directly or indirectly, via other snippets) ([demo](/playground/untitled#H4sIAAAAAAAAE3WPwY7CMAxEf8UyB1hRgdhjl13Bga8gHFJipEqtGyUGFUX5dxJUtEB3b9bYM_MckHVLWOKut50TMuC5tpbEY4GnuiGP5T6gXG0-ykLSB8vW2oW_UCNZq7Snv_Rjx0Kc4kpc-6OrrfwoVlK3uQ4CaGMgwsl1LUwXy0f54J9-KV4vf20cNo7YkMu22aqAz4-oOLUI9YKluDPF4h_at-hX5PFyzA1tZ84N3fGpf8YfUU6GvDumLqDKmEqCjjCHUEX4hqDTWCU5PJ6Or38c4g1cPu9tnAEAAA==)):
```svelte
<scriptmodule>
export { add };
</script>
{#snippet add(a, b)}
{a} + {b} = {a + b}
{/snippet}
```
## Programmatic snippets
Snippets can be created programmatically with the [`createRawSnippet`](svelte#createRawSnippet) API. This is intended for advanced use cases.
@ -694,6 +700,30 @@ Cannot use `<slot>` syntax and `{@render ...}` tags in the same component. Migra
Cannot use explicit children snippet at the same time as implicit children content. Remove either the non-whitespace content or the children snippet block
```
### snippet_invalid_export
```
An exported snippet can only reference things declared in a `<script module>`, or other exportable snippets
```
It's possible to export a snippet from a `<script module>` block, but only if it doesn't reference anything defined inside a non-module-level `<script>`. For example you can't do this...
```svelte
<scriptmodule>
export { greeting };
</script>
<script>
let message = 'hello';
</script>
{#snippet greeting(name)}
<p>{message} {name}!</p>
{/snippet}
```
...because `greeting` references `message`, which is defined in the second `<script>`.
> `$effect()` can only be used as an expression statement
## export_undefined
> `%name%` is not defined
## global_reference_invalid
> `%name%` is an illegal variable name. To reference a global variable called `%name%`, use `globalThis.%name%`
@ -134,6 +138,28 @@
> %name% cannot be used in runes mode
## snippet_invalid_export
> An exported snippet can only reference things declared in a `<script module>`, or other exportable snippets
It's possible to export a snippet from a `<script module>` block, but only if it doesn't reference anything defined inside a non-module-level `<script>`. For example you can't do this...
```svelte
<scriptmodule>
export { greeting };
</script>
<script>
let message = 'hello';
</script>
{#snippet greeting(name)}
<p>{message} {name}!</p>
{/snippet}
```
...because `greeting` references `message`, which is defined in the second `<script>`.
Dominic Gannaway
3 weeks ago
committed by
GitHub