Add null check

sammy-SC · sammy-SC · commit ec2279d01c2b · 2022-10-11T16:03:42.000+01:00
diff --git a/packages/react-reconciler/src/ReactFiberCompleteWork.new.js b/packages/react-reconciler/src/ReactFiberCompleteWork.new.js
@@ -419,7 +419,8 @@ if (supportsMutation) {
           child.return = node;
         }
         // If Offscreen is not in manual mode, detached tree is hidden from user space.
-        const _needsVisibilityToggle = node.memoizedProps.mode !== 'manual';
+        const _needsVisibilityToggle =
+          node.memoizedProps === null || node.memoizedProps.mode !== 'manual';
         appendAllChildrenToContainer(
           containerChildSet,
           node,
diff --git a/packages/react-reconciler/src/ReactFiberCompleteWork.old.js b/packages/react-reconciler/src/ReactFiberCompleteWork.old.js
@@ -419,7 +419,8 @@ if (supportsMutation) {
           child.return = node;
         }
         // If Offscreen is not in manual mode, detached tree is hidden from user space.
-        const _needsVisibilityToggle = node.memoizedProps.mode !== 'manual';
+        const _needsVisibilityToggle =
+          node.memoizedProps === null || node.memoizedProps.mode !== 'manual';
         appendAllChildrenToContainer(
           containerChildSet,
           node,
