Revert backport f320600cd1f4

giancorderoortiz · Sep 6, 2024 · d6d914b · d6d914b
1 parent eff80ef
commit d6d914b
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/deps/v8/src/objects/js-objects.cc b/deps/v8/src/objects/js-objects.cc
@@ -432,7 +432,9 @@ Maybe<bool> JSReceiver::SetOrCopyDataProperties(
       Nothing<bool>());
 
   if (!from->HasFastProperties() && target->HasFastProperties() &&
-      IsJSObject(*target) && !IsJSGlobalProxy(*target)) {
+      !target->IsJSGlobalProxy()) {
+    // JSProxy is always in slow-mode.
+    DCHECK(!target->IsJSProxy());
     // Convert to slow properties if we're guaranteed to overflow the number of
     // descriptors.
     int source_length;