Patched memoizedUpdaters in devtools

Author: lunaruan

packages/react-devtools-shared/src/backend/renderer.js

@@ -2573,7 +2573,9 @@ export function attach(
 
   function getUpdatersList(root): Array<SerializedElement> | null {
     return root.memoizedUpdaters != null
-      ? Array.from(root.memoizedUpdaters).map(fiberToSerializedElement)
+      ? Array.from(root.memoizedUpdaters)
+          .filter(fiber => getFiberIDUnsafe(fiber) !== null)
+          .map(fiberToSerializedElement)
       : null;
   }
 

packages/react-reconciler/src/ReactFiberWorkLoop.new.js

@@ -12,7 +12,7 @@ import type {Fiber, FiberRoot} from './ReactInternalTypes';
 import type {Lanes, Lane} from './ReactFiberLane.new';
 import type {SuspenseState} from './ReactFiberSuspenseComponent.new';
 import type {StackCursor} from './ReactFiberStack.new';
-import {ChildDeletion, Deletion, Flags} from './ReactFiberFlags';
+import type {Flags} from './ReactFiberFlags';
 import type {FunctionComponentUpdateQueue} from './ReactFiberHooks.new';
 
 import {
@@ -123,6 +123,7 @@ import {
   PassiveMask,
   MountPassiveDev,
   MountLayoutDev,
+  Deletion,
 } from './ReactFiberFlags';
 import {
   NoLanes,