diff --git a/wepy.config.js b/wepy.config.js
index 0477f7f..327c8ba 100644
--- a/wepy.config.js
+++ b/wepy.config.js
@@ -9,6 +9,7 @@ module.exports = {
           "outputStyle": "compressed"
         },
         babel: {
+            "sourceMap": true,
             "presets": [
                 "es2015",
                 "stage-1"