failing test

packages/svelte/tests/runtime-runes/samples/derived-destructured-iterator/_config.js

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+import { flushSync } from 'svelte';
+import { test } from '../../test';
+
+export default test({
+	html: `<button>increment</button><p>a: 1</p><p>b: 2</p><p>c: 3</p>`,
+
+	test({ assert, target }) {
+		const button = target.querySelector('button');
+
+		flushSync(() => button?.click());
+		assert.htmlEqual(
+			target.innerHTML,
+			`<button>increment</button><p>a: 2</p><p>b: 3</p><p>c: 4</p>`
+		);
+	}
+});

packages/svelte/tests/runtime-runes/samples/derived-destructured-iterator/main.svelte

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+<script>
+	let offset = $state(1);
+
+	function* count(offset) {
+		let i = offset;
+		while (true) yield i++;
+	}
+
+	let [a, b, c] = $derived(count(offset));
+</script>
+
+<button onclick={() => offset += 1}>increment</button>
+
+<p>a: {a}</p>
+<p>b: {b}</p>
+<p>c: {c}</p>