add test

test/runtime/samples/component-binding-aliased/Widget.svelte

@@ -0,0 +1,4 @@
+<script>
+	let foo = 42;
+	export { foo as bar };
+</script>

test/runtime/samples/component-binding-aliased/_config.js

@@ -0,0 +1,5 @@
+export default {
+	html: `
+		<div>42</div>
+	`
+};

test/runtime/samples/component-binding-aliased/main.svelte

@@ -0,0 +1,8 @@
+<script>
+	import Widget from './Widget.svelte';
+	let bar;
+</script>
+
+<Widget bind:bar/>
+
+<div>{bar}</div>