diff --git a/common/babel.config.json__if_babel b/common/babel.config.json__if_babel
index 7f96166..246a545 100644
--- a/common/babel.config.json__if_babel
+++ b/common/babel.config.json__if_babel
@@ -7,6 +7,7 @@
   ],
   "plugins": [
     ["@babel/plugin-proposal-decorators", { "version": "legacy" }],
+    ["@babel/plugin-transform-class-properties", { "loose": true }],
     "@babel/plugin-syntax-dynamic-import"
   ]
 }