vue3插件（unplugin-auto-import自动引入的使用）

1. vite.config 文件里面

import AutoImport from 'unplugin-auto-import/vite'

plugins: [
  .......,
 AutoImport({
        include: [
          /\.[tj]sx?$/, // .ts, .tsx, .js, .jsx
          /\.vue$/,
          /\.vue\?vue/, // .vue
          /\.md$/ // .md
        ],
        // 自动导入 Vue 相关函数，如：ref, reactive, toRef 等
        imports: [
          'vue',
          'vue-router',
          {
            '@vueuse/core': [
              // named imports
              'useMouse', // import { useMouse } from '@vueuse/core',
              // alias
              ['useFetch', 'useMyFetch'] // import { useFetch as useMyFetch } from '@vueuse/core',
            ],

            axios: [['default', 'axios']],
            'await-to-js': ['to']
          }
        ],
        eslintrc: {
          enabled: true, // 是否自动生成 eslint 规则，建议生成之后设置 false
          filepath: './.eslintrc-auto-import.json' // 指定自动导入函数 eslint 规则的文件
        },
        resolvers: [ElementPlusResolver()],
        dts: path.resolve('types', 'auto-imports.d.ts') // 指定自动导入函数TS类型声明文件路径
      })   
]

重新运行项目会生成一个auto-imports.d.ts的文件

文件内容如下:

/* eslint-disable */
/* prettier-ignore */
// @ts-nocheck
// noinspection JSUnusedGlobalSymbols
// Generated by unplugin-auto-import
export {}
declare global {
  const EffectScope: typeof import('vue')['EffectScope']
  const ElMessage: typeof import('element-plus/es')['ElMessage']
  const ElMessageBox: typeof import('element-plus/es')['ElMessageBox']
  const axios: typeof import('axios')['default']
  const computed: typeof import('vue')['computed']
  const createApp: typeof import('vue')['createApp']
  const customRef: typeof import('vue')['customRef']
  const defineAsyncComponent: typeof import('vue')['defineAsyncComponent']
  const defineComponent: typeof import('vue')['defineComponent']
  const effectScope: typeof import('vue')['effectScope']
  const getCurrentInstance: typeof import('vue')['getCurrentInstance']
  const getCurrentScope: typeof import('vue')['getCurrentScope']
  const h: typeof import('vue')['h']
  const inject: typeof import('vue')['inject']
  const isProxy: typeof import('vue')['isProxy']
  const isReactive: typeof import('vue')['isReactive']
  const isReadonly: typeof import('vue')['isReadonly']
  const isRef: typeof import('vue')['isRef']
  const markRaw: typeof import('vue')['markRaw']
  const nextTick: typeof import('vue')['nextTick']
  const onActivated: typeof import('vue')['onActivated']
  const onBeforeMount: typeof import('vue')['onBeforeMount']
  const onBeforeRouteLeave: typeof import('vue-router')['onBeforeRouteLeave']
  const onBeforeRouteUpdate: typeof import('vue-router')['onBeforeRouteUpdate']
  const onBeforeUnmount: typeof import('vue')['onBeforeUnmount']
  const onBeforeUpdate: typeof import('vue')['onBeforeUpdate']
  const onDeactivated: typeof import('vue')['onDeactivated']
  const onErrorCaptured: typeof import('vue')['onErrorCaptured']
  const onMounted: typeof import('vue')['onMounted']
  const onRenderTracked: typeof import('vue')['onRenderTracked']
  const onRenderTriggered: typeof import('vue')['onRenderTriggered']
  const onScopeDispose: typeof import('vue')['onScopeDispose']
  const onServerPrefetch: typeof import('vue')['onServerPrefetch']
  const onUnmounted: typeof import('vue')['onUnmounted']
  const onUpdated: typeof import('vue')['onUpdated']
  const provide: typeof import('vue')['provide']
  const reactive: typeof import('vue')['reactive']
  const readonly: typeof import('vue')['readonly']
  const ref: typeof import('vue')['ref']
  const resolveComponent: typeof import('vue')['resolveComponent']
  const shallowReactive: typeof import('vue')['shallowReactive']
  const shallowReadonly: typeof import('vue')['shallowReadonly']
  const shallowRef: typeof import('vue')['shallowRef']
  const to: typeof import('await-to-js')['to']
  const toRaw: typeof import('vue')['toRaw']
  const toRef: typeof import('vue')['toRef']
  const toRefs: typeof import('vue')['toRefs']
  const toValue: typeof import('vue')['toValue']
  const triggerRef: typeof import('vue')['triggerRef']
  const unref: typeof import('vue')['unref']
  const useAttrs: typeof import('vue')['useAttrs']
  const useCssModule: typeof import('vue')['useCssModule']
  const useCssVars: typeof import('vue')['useCssVars']
  const useLink: typeof import('vue-router')['useLink']
  const useMouse: typeof import('@vueuse/core')['useMouse']
  const useMyFetch: typeof import('@vueuse/core')['useFetch']
  const useRoute: typeof import('vue-router')['useRoute']
  const useRouter: typeof import('vue-router')['useRouter']
  const useSlots: typeof import('vue')['useSlots']
  const watch: typeof import('vue')['watch']
  const watchEffect: typeof import('vue')['watchEffect']
  const watchPostEffect: typeof import('vue')['watchPostEffect']
  const watchSyncEffect: typeof import('vue')['watchSyncEffect']
}
// for type re-export
declare global {
  // @ts-ignore
  export type { Component, ComponentPublicInstance, ComputedRef, ExtractDefaultPropTypes, ExtractPropTypes, ExtractPublicPropTypes, InjectionKey, PropType, Ref, VNode, WritableComputedRef } from 'vue'
}

页面如果还有警告出来的话，需要加下includes配置

 在tsconfig.json 文件中添加：

 { 2 ......., 3 "include": ["src/**/*.ts", "src/**/*.tsx", "src/**/*.vue", "types/**/*.d.ts"] 4 } 

此时在页面中不用单独引入ref、watch 等其他  就可以直接在页面使用