Naive fix

eps1lon · eps1lon · commit 765ae431f872 · 2021-06-30T14:26:43.000+02:00
diff --git a/packages/react-reconciler/src/ReactFiberHooks.new.js b/packages/react-reconciler/src/ReactFiberHooks.new.js
@@ -821,7 +821,9 @@ function updateReducer<S, I, A>(
           newState = ((update.eagerState: any): S);
         } else {
           const action = update.action;
-          newState = reducer(newState, action);
+          const reducerImpl =
+            update.eagerReducer !== null ? update.eagerReducer : reducer;
+          newState = reducerImpl(newState, action);
         }
       }
       update = update.next;
diff --git a/packages/react-reconciler/src/ReactFiberHooks.old.js b/packages/react-reconciler/src/ReactFiberHooks.old.js
@@ -821,7 +821,9 @@ function updateReducer<S, I, A>(
           newState = ((update.eagerState: any): S);
         } else {
           const action = update.action;
-          newState = reducer(newState, action);
+          const reducerImpl =
+            update.eagerReducer !== null ? update.eagerReducer : reducer;
+          newState = reducerImpl(newState, action);
         }
       }
       update = update.next;

Original file line number	Diff line number	Diff line change
`@@ -821,7 +821,9 @@ function updateReducer<S, I, A>(`
`821`	`821`	`newState = ((update.eagerState: any): S);`
`822`	`822`	`} else {`
`823`	`823`	`const action = update.action;`
`824`		`- newState = reducer(newState, action);`
	`824`	`+ const reducerImpl =`
	`825`	`+ update.eagerReducer !== null ? update.eagerReducer : reducer;`
	`826`	`+ newState = reducerImpl(newState, action);`
`825`	`827`	`}`
`826`	`828`	`}`
`827`	`829`	`update = update.next;`