Merge pull request #222 from u3u/hotfix/types

fix(types): `metaInfo` should always be a member function

types/vue.d.ts

@@ -13,6 +13,6 @@ declare module "vue/types/options" {
 
 declare module "vue/types/vue" {
   interface Vue {
-    metaInfo?: MetaInfo | (() => MetaInfo)
+    metaInfo(): MetaInfo
   }
 }