- Rollback babel changes

Author: heath-freenome

babel.config.json

@@ -10,8 +10,8 @@
     "@babel/preset-typescript"
   ],
   "plugins": [
-    "@babel/plugin-transform-class-properties",
-    "@babel/plugin-transform-optional-chaining",
+    "@babel/plugin-proposal-class-properties",
+    "@babel/plugin-proposal-optional-chaining",
     "@babel/plugin-transform-class-static-block"
   ]
 }