diff --git a/js/src/dom/event-handler.js b/js/src/dom/event-handler.js
index 930376aa9bcc..c76b0e354973 100644
--- a/js/src/dom/event-handler.js
+++ b/js/src/dom/event-handler.js
@@ -301,8 +301,8 @@ const EventHandler = {
   }
 }
 
-function hydrateObj(obj, meta) {
-  for (const [key, value] of Object.entries(meta || {})) {
+function hydrateObj(obj, meta = {}) {
+  for (const [key, value] of Object.entries(meta)) {
     try {
       obj[key] = value
     } catch {