Validate skip-to list component to prop

Author: shwilliam

src/skip-to-list.vue

@@ -37,8 +37,14 @@ export default {
 
   props: {
     to: {
-      type: Array
-      /* TODO: add validator */
+      validator: function (val) {
+        return Array.isArray(val) &&
+          val.every(({anchor, label}) => (
+            typeof anchor === 'string' &&
+              anchor.startsWith('#') &&
+              typeof String(label) === 'string'
+          ))
+      }
     }
   },