index.ts

import { createLogger } from "redux-logger";
import storage from "redux-persist/lib/storage";
import { persistStore, persistReducer } from "redux-persist";
import { compose, createStore, applyMiddleware } from "redux";

import { rootReducer } from "./reducer";

const persistConfig = {
  key: "root",
  storage: storage,
};

const persistedReducer = persistReducer(persistConfig, rootReducer);
const composeEnhancers =
  (window as any).__REDUX_DEVTOOLS_EXTENSION_COMPOSE__ || compose;

const store = createStore(
  persistedReducer,
  composeEnhancers(applyMiddleware(createLogger()))
);

export const persistor = persistStore(store);

export default store;

reducer.ts

import authReducer from "./auth/reducers";

import { combineReducers } from "redux";

export const rootReducer = combineReducers({
  auth: authReducer,
});

export type RootState = ReturnType<typeof rootReducer>;