如何在 Vue 3 SSR 应用程序的路由器中使用 vuex 商店？

Question

我有一个带有 SSR、Vue-Cli、Vuex 和 Typescript 的 Vue3 项目。

在路由器页面中，我需要将数据提交到 Vuex Store。在 .vue 文件中，我只需使用在 vuex.d.ts 中输入的 this.$store，例如：

this.$store.commit("setFoo", "Bar")

但是我如何从没有 this 或 vue 实例的 ts 文件（router/index.ts）中做到这一点。

我已尝试导入存储索引文件并提交：

import store from "@/store/index"

store.commit("setFoo", "Bar")

但我得到一个错误

类型'() => Store'.ts(2339)

存储文件（因为我正在运行 SSR，所以存储不能是单例）：

import Vuex from "vuex"

export default function () {
  return new Vuex.Store({
    state: () => ({
      foo: "foo",
    }),
    mutations: {
      setFoo(state, payload) {
        state.foo = payload
      },
    },
  })
}

更新了 vuex 4 的存储文件：

import { createStore } from "vuex"

const store = {
  state: () => ({
    foo: "foo",
  })
}

export default function () {
  return createStore(store)
}

entry-client.js：

import createApp from "./main"

const { app, router } = createApp()

router.isReady().then(() => {
  app.mount("#app", true)
})

入口服务器.ts：

import createApp from "./main"

export default function () {
  const { app, router } = createApp()

  return {
    app,
    router,
  }
}

main.js：

import { createSSRApp, createApp, h } from "vue"
import { isSSR } from "@/helpers"
import createRouter from "@/router"
import createStore from "@/store"
import axios from "axios"
import VueAxios from "vue-axios"
import App from "@/App.vue"

export default function () {

  const rootComponent = {
    render: () => h(App),
    components: { App },
  }

  const app = (isSSR() ? createSSRApp : createApp)(rootComponent)
  const router = createRouter()
  const store = createStore()

  app.use(VueAxios, axios)
  app.use(router)
  app.use(store)

  app.provide("axios", app.config.globalProperties.axios)

  return {
    app,
    router,
    store,
  }
}

路由器/index.ts：

  import { createRouter, createWebHistory, createMemoryHistory } from "vue-router"
  import store from "@/store/index"
  import axios from "axios"
  import MockAdapter from "axios-mock-adapter"
  import { routes } from "./routes"
  import { isSSR } from "@/helpers"

  const history = isSSR()
    ? createMemoryHistory()
    : createWebHistory(process.env.BASE_URL)

  const router = createRouter({ routes, history })

  router.beforeEach(async (to, from, next) => {
   // do stuff with store
  })
  
  export default function () {
    return router
  }

包.json：

  "scripts": {
    "build:all": "npm run build:client && npm run build:server",
    "build:client": "vue-cli-service build --dest dist/client",
    "build:server": "export SSR=1 || set SSR=1&& vue-cli-service build --dest dist/server",
    "build:server:dev": "export SSR=1 || set SSR=1&& vue-cli-service build --mode development --dest dist/server",
    "serve:client": "vue-cli-service serve",
    "serve:server": "node ./dist/server/server.js",
    "lint": "vue-cli-service lint"
  },
  "dependencies": {
    "@vue/server-renderer": "^3.2.4",
    "axios": "^0.21.1",
    "core-js": "^3.6.5",
    "express": "^4.17.1",
    "vue": "^3.0.0",
    "vue-axios": "^3.2.5",
    "vue-router": "^4.0.0-0",
    "vuex": "^4.0.0-0"
  },
  "devDependencies": {
    "@typescript-eslint/eslint-plugin": "^4.18.0",
    "@typescript-eslint/parser": "^4.18.0",
    "@vue/cli-plugin-babel": "^5.0.0-beta.3",
    "@vue/cli-plugin-eslint": "^5.0.0-beta.3",
    "@vue/cli-plugin-router": "^5.0.0-beta.3",
    "@vue/cli-plugin-typescript": "^5.0.0-beta.3",
    "@vue/cli-plugin-vuex": "^5.0.0-beta.3",
    "@vue/cli-service": "^5.0.0-beta.3",
    "@vue/compiler-sfc": "^3.0.0",
    "@vue/eslint-config-prettier": "^6.0.0",
    "@vue/eslint-config-typescript": "^7.0.0",
    "axios-mock-adapter": "^1.20.0",
    "eslint": "^7.20.0",
    "eslint-plugin-prettier": "^3.3.1",
    "eslint-plugin-vue": "^7.6.0",
    "node-sass": "^4.12.0",
    "prettier": "^2.2.1",
    "sass-loader": "^8.0.2",
    "typescript": "~4.1.5",
    "webpack-manifest-plugin": "^4.0.2",
    "webpack-node-externals": "^3.0.0"
  }

Answer 1

请注意，Avoid Stateful Singletons 规则不仅适用于主应用实例和商店，还适用于 also to a router

您当前的 Router/index.ts 创建有状态的单例。相反，您需要创建一个“路由器工厂”功能，以便每个服务器请求都获得新的路由器实例。额外的好处是现在您可以将商店实例传递给它

Router/index.ts

  import { createRouter, createWebHistory, createMemoryHistory } from "vue-router"
  import axios from "axios"
  import MockAdapter from "axios-mock-adapter"
  import { routes } from "./routes"
  import { isSSR } from "@/helpers"

  const createHistory = isSSR()
    ? createMemoryHistory
    : createWebHistory

  export default function (store) {
    const router = createRouter({ 
      routes, 
      history: createHistory(process.env.BASE_URL)
    })

    router.beforeEach(async (to, from, next) => {
      // do stuff with store (store comes from argument)
    })
  
    return router
  }

注意both server and client bundle should use createSSRApp - 如果你使用标准的createApp，client side hydration 将不起作用

Vue 提供了一个 createSSRApp 方法用于客户端代码，告诉 Vue 水合现有的静态 HTML，而不是重新创建所有 DOM 元素

main.js

import { createSSRApp, h } from "vue"
import { isSSR } from "@/helpers"
import createRouter from "@/router"
import createStore from "@/store"
import axios from "axios"
import VueAxios from "vue-axios"
import App from "@/App.vue"

export default function () {

  const rootComponent = {
    render: () => h(App),
    components: { App },
  }

  const app = createSSRApp(rootComponent)
  const store = createStore()
  const router = createRouter(store)

  app.use(VueAxios, axios)
  app.use(router)
  app.use(store)

  app.provide("axios", app.config.globalProperties.axios)

  return {
    app,
    router,
    store,
  }
}

Answer 2

您的默认导出是一个函数

export default function () {

我想你想这样做：

export default new Vuex.Store({...})

如果您想将其保留为函数，您也可以尝试store().commit，但这只会在您每次调用 store() 时创建一个新的 Vuex 实例