Only warn in case the fourth argument is a function (#16543)

facebook · Aug 22, 2019 · 16c3408 · 16c3408
1 parent 05f5192
commit 16c3408
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packages/react-reconciler/src/ReactFiberHooks.js b/packages/react-reconciler/src/ReactFiberHooks.js
@@ -1122,7 +1122,7 @@ function dispatchAction<S, A>(
 
   if (__DEV__) {
     warning(
-      arguments.length <= 3,
+      typeof arguments[3] !== 'function',
       "State updates from the useState() and useReducer() Hooks don't support the " +
         'second callback argument. To execute a side effect after ' +
         'rendering, declare it in the component body with useEffect().',