Migrate To Modern Redux

Setup

// before
import { applyMiddleware, combineReducers, createStore } from 'redux'
import thunk from 'redux-thunk'

const postsReducer = (state = [] as { id: string; title: string }[]) => state
const usersReducer = (state = [] as { id: string; name: string }[]) => state

const rootReducer = combineReducers({
  posts: postsReducer,
  users: usersReducer,
})

export const legacyStore = createStore(rootReducer, applyMiddleware(thunk))