Remember eagerReducer even if there is nothing in the queue

gaearon · gaearon · commit 6670512082e1 · 2019-03-16T01:04:04.000Z
diff --git a/packages/react-reconciler/src/ReactFiberHooks.js b/packages/react-reconciler/src/ReactFiberHooks.js
@@ -742,9 +742,9 @@ function updateReducer<S, I, A>(
     hook.baseUpdate = newBaseUpdate;
     hook.baseState = newBaseState;
 
-    queue.eagerReducer = reducer;
     queue.eagerState = newState;
   }
+  queue.eagerReducer = reducer;
 
   const dispatch: Dispatch<A> = (queue.dispatch: any);
   return [hook.memoizedState, dispatch];

Original file line number	Diff line number	Diff line change
`@@ -742,9 +742,9 @@ function updateReducer<S, I, A>(`
`742`	`742`	`hook.baseUpdate = newBaseUpdate;`
`743`	`743`	`hook.baseState = newBaseState;`
`744`	`744`
`745`		`- queue.eagerReducer = reducer;`
`746`	`745`	`queue.eagerState = newState;`
`747`	`746`	`}`
	`747`	`+ queue.eagerReducer = reducer;`
`748`	`748`
`749`	`749`	`const dispatch: Dispatch<A> = (queue.dispatch: any);`
`750`	`750`	`return [hook.memoizedState, dispatch];`