Index: node_modules/redux/src/utils/isAction.ts
===================================================================
--- node_modules/redux/src/utils/isAction.ts	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
+++ node_modules/redux/src/utils/isAction.ts	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
@@ -0,0 +1,10 @@
+import { Action } from '../types/actions'
+import isPlainObject from './isPlainObject'
+
+export default function isAction(action: unknown): action is Action<string> {
+  return (
+    isPlainObject(action) &&
+    'type' in action &&
+    typeof (action as Record<'type', unknown>).type === 'string'
+  )
+}