chore: make babel not transform es modules.

.babelrc

@@ -1,7 +1,13 @@
 {
-  "presets": [["env", {
+  "presets": [
+    [
+      "env",
+      {
         "targets": {
           "uglify": true
+        },
+        "modules": false
       }
-  }]]
+    ]
+  ]
 }