server-render-like-a-pro-12.js

const { ...theUsual, thunk, initialDispatch } = connectRoutes(
  history,
  routesMap, {
    ...options,
    initialDispatch: isServer ? false : true
  }
)

...

return { store, thunk, initialDispatch } 



import { fetchUser } from '../src/actions/async'

export default async (req, res) => {
  const history = createHistory({ initialEntries: [req.path] })
  const { store, thunk, initialDispatch } = configureStore(history)

  await store.dispatch(fetchUser(req.cookies.sessionId))
  initialDispatch()
  
  if (doesRedirect(store.getState().location, res)) return false
  await thunk(store) 
  if (doesRedirect(store.getState().location, res)) return false
  
  const status = location.type === NOT_FOUND ? 404 : 200
  res.status(status)
  return store
}