diff --git a/lib/generator.js b/lib/generator.js
index a74e6a536b..14191d9939 100644
--- a/lib/generator.js
+++ b/lib/generator.js
@@ -135,5 +135,7 @@ export default class Generator extends Tapable {
       })
       console.error('==== Error report ==== \n' + report.join('\n\n')) // eslint-disable-line no-console
     }
+
+    return { duration, errors }
   }
 }