diff --git a/unitool/index.js b/unitool/index.js
index 4613136..527ab8f 100644
--- a/unitool/index.js
+++ b/unitool/index.js
@@ -11,6 +11,8 @@ module.exports = {
   BLACK_TOAST: 'default',
   WHITE_BUTTON: 'default',
 
+  BACKEND: 'SERVER',
+
   clog(...message) {
     console.log(
       '【【【【【【【【【【',