Array destructuring broken in `async` script

[paoloricciuti]

Describe the bug

Having something as simple as this

<script>
	await Promise.resolve();
	const [] = $derived([]);
</script>

throws a ReferenceError $$array is not defined

this is because this is the generated code

import 'svelte/internal/disclose-version';
import 'svelte/internal/flags/async';
import * as $ from 'svelte/internal/client';

export default function App($$anchor) {
	var $$promises = $.run([
		() => Promise.resolve(),

		() => {
			var $$d = $.derived(() => []);

			$$array = $.derived(() => $.to_array($.get($$d), 0));
		}
	]);
}

which means $$array is not a multi declaration with $$d how it should be.

Reproduction

repl

Logs

System Info

repl

Severity

annoyance