app.js

const store = createStore(
  combineReducers({
    ...reducers,
    routing: routerReducer
  })
)

const history = syncHistoryWithStore(browserHistory, store);
history.listen(location => trackPage(appName, location));

ReactDOM.render(
  <Provider store={store}>
    <Router history={history} routes={routes} />
  </Provider>,
  document.getElementById('react-root')
);