Pinia第八章：生态集成与未来演进（扩展篇）

8.1 深度集成 Vue 生态

8.1.1 与 Vue Router 联动

// stores/router.store.ts
import type { RouteLocationNormalized } from 'vue-router'

export const useRouterStore = defineStore('router', {
  state: () => ({
    navigationHistory: [] as RouteLocationNormalized[],
    currentTransition: null as string | null
  }),

  actions: {
    trackNavigation(to: RouteLocationNormalized) {
      if (this.navigationHistory.length > 50) {
        this.navigationHistory.shift()
      }
      this.navigationHistory.push(to)
    },

    setTransition(effect: string) {
      this.currentTransition = effect
    }
  }
})

// 路由导航守卫集成
router.beforeEach((to, from) => {
  const store = useRouterStore()
  store.trackNavigation(from)
  if (to.meta.transition) {
    store.setTransition(to.meta.transition)
  }
})

8.1.2 整合 Vue Query

// stores/api.store.ts
import { useQuery } from 'vue-query'

export const useApiStore = defineStore('api', () => {
  const fetchUser = async (userId: string) => {
    const res = await axios.get(`/users/${userId}`)
    return res.data
  }

  const {
    data: user,
    isLoading,
    error
  } = useQuery(['user', userId], () => fetchUser(userId), {
    staleTime: 5 * 60 * 1000
  })

  return {
    user,
    isLoading,
    error
  }
})

// 组件中使用
const { user, isLoading } = useApiStore()

---

8.2 微前端架构实践

8.2.1 跨应用状态共享

// 主应用共享 Store
export const useSharedStore = defineStore('shared', {
  state: () => ({
    globalConfig: {} as AppConfig,
    microStores: new Map<string, any>()
  }),

  actions: {
    registerMicroStore(name: string, store: any) {
      this.microStores.set(name, store)
    }
  }
})

// 子应用挂载时
window.connectToHost = (hostStore: any) => {
  const localStore = useMicroStore()
  hostStore.registerMicroStore('microApp', {
    state: localStore.$state,
    actions: pick(localStore, ['fetchData', 'submitForm'])
  })
}

8.2.2 状态隔离方案

// 创建沙箱化 Pinia 实例
function createSandboxedPinia() {
  const pinia = createPinia()
  const originalPatch = pinia._p.push
  
  pinia._p.push = (plugin) => {
    // 阻止污染全局插件
    if (plugin.name !== 'sandboxed') return
    originalPatch.call(pinia, plugin)
  }

  return pinia
}

// 子应用初始化
const sandboxedPinia = createSandboxedPinia()
app.use(sandboxedPinia)

---

8.3 状态管理未来趋势

8.3.1 响应式关系型数据

// 使用 Pinia + WatermelonDB
import { Database } from '@nozbe/watermelondb'
import SQLiteAdapter from '@nozbe/watermelondb/adapters/sqlite'

export const useDatabaseStore = defineStore('database', () => {
  const adapter = new SQLiteAdapter({
    schema: require('./schema.json')
  })

  const database = new Database({
    adapter,
    modelClasses: [User, Post]
  })

  const users = database.collections.get('users')
  const posts = database.collections.get('posts')

  async function queryUserPosts(userId: string) {
    return await users.find(userId).posts.fetch()
  }

  return {
    database,
    users,
    posts,
    queryUserPosts
  }
})

8.3.2 原子化状态管理

// 使用 Jotai 风格原子化 Store
import { atom, useAtom } from 'jotai'

const countAtom = atom(0)
const doubledAtom = atom((get) => get(countAtom) * 2)

export const useCounterStore = defineStore('counter', () => {
  const [count, setCount] = useAtom(countAtom)
  const [doubled] = useAtom(doubledAtom)

  function increment() {
    setCount((prev) => prev + 1)
  }

  return {
    count,
    doubled,
    increment
  }
})

---

8.4 多语言国际化方案

8.4.1 集成 i18n

// stores/i18n.store.ts
import { createI18n } from 'vue-i18n'

export const useI18nStore = defineStore('i18n', {
  state: () => ({
    locale: 'zh-CN',
    messages: {} as Record<string, any>
  }),

  actions: {
    async switchLocale(newLocale: string) {
      if (!this.messages[newLocale]) {
        this.messages[newLocale] = await import(`../locales/${newLocale}.json`)
      }
      this.locale = newLocale
    }
  },

  getters: {
    t: (state) => (key: string) => {
      return state.messages[state.locale]?.[key] || key
    }
  }
})

// 创建 Vue i18n 实例
const i18n = createI18n({
  legacy: false,
  locale: useI18nStore().locale,
  messages: useI18nStore().messages
})

---

8.5 性能优化终极策略

8.5.1 Web Worker 集成

// stores/worker.store.ts
export const useWorkerStore = defineStore('worker', () => {
  const worker = new Worker('./heavy-task.js')
  const result = ref(null)
  const isProcessing = ref(false)

  worker.onmessage = (e) => {
    result.value = e.data
    isProcessing.value = false
  }

  function processData(data: any) {
    isProcessing.value = true
    worker.postMessage(data)
  }

  return {
    result,
    isProcessing,
    processData
  }
})

// heavy-task.js
self.onmessage = function(e) {
  const result = performHeavyCalculation(e.data)
  self.postMessage(result)
}

8.5.2 WASM 加速计算

// stores/wasm.store.ts
export const useWasmStore = defineStore('wasm', () => {
  const instance = ref<WebAssembly.Instance | null>(null)

  async function init() {
    const response = await fetch('optimized.wasm')
    const buffer = await response.arrayBuffer()
    const module = await WebAssembly.compile(buffer)
    instance.value = await WebAssembly.instantiate(module)
  }

  function complexCalculation(input: number) {
    if (!instance.value) throw new Error('WASM 未初始化')
    return instance.value.exports.calculate(input)
  }

  return {
    init,
    complexCalculation
  }
})

---

本章核心总结：

1. 生态融合：深度整合 Vue Router、Vue Query 等核心生态库
2. 架构演进：
   • 微前端状态管理方案
   • 沙箱化隔离策略
3. 未来方向：
   • 关系型数据管理
   • 原子化状态探索
4. 国际化方案：动态语言包加载与响应式切换
5. 极致性能：
   • Web Worker 分流计算
   • WASM 性能加速
   • 内存敏感型操作优化