text: import { createStore, applyMiddleware, compose } from 'redux';
  import { routerMiddleware } from 'react-router-redux';
  import thunk from 'redux-thunk';
  import createHistory from 'history/createBrowserHistory';
  import rootReducer from './modules';
  
  export const history = createHistory();
  
  const initialState = {};
  const enhancers = [];
  const middleware = [thunk, routerMiddleware(history)];
  
  if (process.env.NODE_ENV === 'development') {
    const devToolsExtension = window.__REDUX_DEVTOOLS_EXTENSION__;
  
    if (typeof devToolsExtension === 'function') {
      enhancers.push(devToolsExtension());
    }
  }
  
  const composedEnhancers = compose(applyMiddleware(...middleware), ...enhancers);
  
  export default createStore(rootReducer, initialState, composedEnhancers);
  