diff --git a/TODO.md b/TODO.md
index 01e9e26..6af7f1b 100644
--- a/TODO.md
+++ b/TODO.md
@@ -24,6 +24,7 @@
 # JS
 
 - Use delegation for action attributes like: https://javascript.info/event-delegation#delegation-example-actions-in-markup
+- Proxy for class options: https://javascript.info/proxy
 
 # Content