failing test for #3354

Author: Rich-Harris

Diff for: test/runtime/samples/component-slot-let-f/A.svelte

@@ -0,0 +1,9 @@
+<script>
+	import B from './B.svelte';
+	export let x;
+</script>
+
+<B {x} let:reflected>
+	<span>{reflected}</span>
+	<slot {reflected} />
+</B>

Diff for: test/runtime/samples/component-slot-let-f/B.svelte

@@ -0,0 +1,5 @@
+<script>
+	export let x;
+</script>
+
+<slot reflected={x}/>

Diff for: test/runtime/samples/component-slot-let-f/_config.js

@@ -0,0 +1,15 @@
+export default {
+	html: `
+		<span>1</span>
+		<span>1</span>
+	`,
+
+	async test({ assert, target, component }) {
+		component.x = 2;
+
+		assert.htmlEqual(target.innerHTML, `
+			<span>2</span>
+			<span>2</span>
+		`);
+	}
+};

Diff for: test/runtime/samples/component-slot-let-f/main.svelte

@@ -0,0 +1,8 @@
+<script>
+	import A from './A.svelte';
+	export let x = 1;
+</script>
+
+<A {x} let:reflected>
+	<span>{reflected}</span>
+</A>