import Vuex from 'vuex'
// 引入分割的模块
import state from './state/state'
import mutations from './mutations/mutations'
import getters from './getters/getters'

export default ()=>{
// 这里需要赋给一个store变量
 const store = new Vuex.Store({
  state:state,
  mutations:mutations,
  getters:getters
 })
 // 热更新模块
 if(module.hot){
 // 跟上面一样，写入对应的分割模块路径
  module.hot.accept([
   './state/state',
   './mutations/mutations',
   './getters/getters'
  ],()=>{
  // 开启热更替
   const newState = require('./state/state').default
   const newMutations = require('./mutations/mutations').default
   const newGetters = require('./getters/getters').default
   store.hotUpdate({
    state:newState,
    mutations:newMutations,
    getters:newGetters
   })
  })
 }
 
 return store
}

import Vue from 'vue'
import App from './App.vue'
import Vuex from 'vuex'
import createStore from './store/index.js'

Vue.config.productionTip = false

Vue.use(Vuex)
const store=createStore();

new Vue({
 store,
 render: h => h(App)
}).$mount('#app')

// store.registerModule({ //动态添加模块
// })

// 相当于getter
// store.watch((state)=>state.count+1,(newCount)=>{
//  console.log('new count watched , '+newCount)
// })

// mutation被调用时
// store.subscribe((mutation,state)=>{
//  console.log(mutation.type)
//  console.log(mutation.payload)
// })

// action被调用时
// store.subscribeAction((action,state)=>{
//  console.log(action.type)
//  console.log(action.payload)
// })