handle directives on components (fixes #216)

src/generators/server-side-rendering/visitors/Component.js

@@ -9,6 +9,8 @@ export default {
 		}
 
 		const props = node.attributes.map( attribute => {
+			if ( attribute.type !== 'Attribute' ) return;
+
 			let value;
 
 			if ( attribute.value === true ) {

test/server-side-rendering/component-refs/Widget.html

@@ -0,0 +1 @@
+<p>widget</p>

test/server-side-rendering/component-refs/_actual.html

@@ -0,0 +1 @@
+<div><p>widget</p></div>

test/server-side-rendering/component-refs/_expected.html

@@ -0,0 +1 @@
+<div><p>widget</p></div>

test/server-side-rendering/component-refs/main.html

@@ -0,0 +1,9 @@
+<div><Widget ref:widget/></div>
+
+<script>
+	import Widget from './Widget.html';
+
+	export default {
+		components: { Widget }
+	};
+</script>