redux store file

configureStore.js

import { createStore, combineReducers, compose, applyMiddleware } from 'redux';
import ReduxThunk from 'redux-thunk';
import { routerMiddleware } from 'react-router-redux';
import { hashHistory } from 'react-router';
import * as Reducers from '../reducers';

export default function configureStore(initialState) {
  const store = createStore(
    combineReducers(Reducers),
    initialState,
    compose(
      applyMiddleware(routerMiddleware(hashHistory), ReduxThunk),
      window.devToolsExtension ? window.devToolsExtension() : f => f
    )
  );

  if (module.hot) {
    // Enable Webpack hot module replacement for reducers
    module.hot.accept('../reducers', () => {
      const nextRootReducer = require('../reducers').default;
      store.replaceReducer(nextRootReducer);
    });
  }
  return store;
}