vue3引入插件unplugin-auto-import

npm i unplugin-auto-import -D

import AutoImport from 'unplugin-auto-import/vite'
export default defineConfig({
  plugins: [vue(),AutoImport({
    imports: ['vue'],
    dts: 'src/auto-import.d.ts'
  })]
})

<template>
    <div>
        <button @click="flag = !flag">change flag</button>
        <div>{{ flag }}</div>
    </div>
</template>
 
<script setup lang="ts">
const flag = ref(false);
</script>
 
<style lang="less"></style>