diff --git a/examples/vue-class-component/components/Base.vue b/examples/vue-class-component/components/Base.vue
index 529a12ce28..9fe5f0199b 100644
--- a/examples/vue-class-component/components/Base.vue
+++ b/examples/vue-class-component/components/Base.vue
@@ -27,6 +27,8 @@ export default
 })
 class Base extends Vue {
   // initial data
+  // TODO: Remove when upgrade babel-preset-env
+  // eslint-disable-next-line no-undef
   msg = 123
 
   // lifecycle hook