https://redux-toolkit.js.org/usage/usage-guide 공식 문서에 나와있는 코드를 옮겼다.
그대로 적용하면 되기 때문에 간단하게 toolkit에 붙는다.
import { configureStore } from '@reduxjs/toolkit'
import {
  persistStore,
  persistReducer,
  FLUSH,
  REHYDRATE,
  PAUSE,
  PERSIST,
  PURGE,
  REGISTER,
} from 'redux-persist'
import storage from 'redux-persist/lib/storage'
import { PersistGate } from 'redux-persist/integration/react'
import App from './App'
import rootReducer from './reducers'
const persistConfig = {
  key: 'root',
  version: 1,
  storage,
}
const persistedReducer = persistReducer(persistConfig, rootReducer)
const store = configureStore({
  reducer: persistedReducer,
  middleware: (getDefaultMiddleware) =>
    getDefaultMiddleware({
      serializableCheck: {
        ignoredActions: [FLUSH, REHYDRATE, PAUSE, PERSIST, PURGE, REGISTER],
      },
    }),
})
let persistor = persistStore(store)
ReactDOM.render(
  <Provider store={store}>
    <PersistGate loading={null} persistor={persistor}>
      <App />
    </PersistGate>
  </Provider>,
  document.getElementById('root')
)
logout시 초기화 하는 방법
import { PURGE } from "redux-persist";
...
extraReducers: (builder) => {
    builder.addCase(PURGE, (state) => {
        customEntityAdapter.removeAll(state);
    });
}