Uncaught TypeError: store.getState is not a function nextjs app

[sombizbuzzz]

I am using nextjs, react js app, on creating redux store facing Uncaught TypeError: store.getState is not a function nextjs app . can some one help on this issue . i am removing provider , app is working but i can not access store . here is my code creation of store . store.js

import { configureStore } from '@reduxjs/toolkit';
import { batch, batching } from 'redux-batch-middleware';
import thunk from 'redux-thunk';

const createStore = (reducers, middlewares = []) => (initialState) => {
  const { rootReducer, defaultReducers } = reducers;
  const middlewareList = [thunk, batch, ...middlewares];
  const store = configureStore({
    reducer: batching(rootReducer),
    preloadedState: initialState,
    middleware: middlewareList,
    devTools: true,
  });
  store.asyncReducers = {};
  store.defaultReducers = defaultReducers;
  return store;
};
export default createStore;

here is error error :

Provider.js:19 Uncaught TypeError: store.getState is not a function
    at Provider.js:19
    at mountMemo (react-dom.development.js:15442)
    at Object.useMemo (react-dom.development.js:15738)
    at useMemo (react.development.js:1521)
    at Provider (Provider.js:18)
    at renderWithHooks (react-dom.development.js:14803)
    at mountIndeterminateComponent (react-dom.development.js:17482)
    at beginWork (react-dom.development.js:18596)
    at HTMLUnknownElement.callCallback (react-dom.development.js:188)
    at Object.invokeGuardedCallbackDev (react-dom.development.js:237)
    at invokeGuardedCallback (react-dom.development.js:292)
    at beginWork$1 (react-dom.development.js:23203)
    at performUnitOfWork (react-dom.development.js:22157)
    at workLoopSy[![enter image description here][1]][1]nc (react-dom.development.js:22130)
    at performSyncWorkOnRoot (react-dom.development.js:21756)
    at scheduleUpdateOnFiber (react-dom.development.js:21188)
    at updateContainer (react-dom.development.js:24373)
    at react-dom.development.js:24758
    at unbatchedUpdates (react-dom.development.js:21903)
    at legacyRenderSubtreeIntoContainer (react-dom.development.js:24757)
    at Object.hydrate (react-dom.development.js:24823)
    at renderReactElement (index.js:38)
    at doRender$ (index.js:44)
    at tryCatch (runtime.js:45)
    at Generator.invoke [as _invoke] (runtime.js:274)
    at Generator.prototype.<computed> [as next] (runtime.js:97)
    at tryCatch (runtime.js:45)
    at invoke (runtime.js:135)

https://stackoverflow.com/questions/62761838/uncaught-typeerror-store-getstate-is-not-a-function-nextjs-app