TypeError: AutoImport is not a function

原因：unplugin-auto-import 插件版本问题

Vue3基于Webpack，在vue.config.js中配置

1. 当unplugin-vue-components版本小于0.26.0时，使用以下写法

const { defineConfig } = require("@vue/cli-service")
const AutoImport = require('unplugin-auto-import/webpack')
const Components = require('unplugin-vue-components/webpack')
const { ElementPlusResolver } = require('unplugin-vue-components/resolvers')

module.exports = defineConfig({
  transpileDependencies: true,
  configureWebpack: {
    plugins: [
      AutoImport({
        resolvers: [ElementPlusResolver()],
      }),
      Components({
        resolvers: [ElementPlusResolver()],
      }),
    ]
  }
})

2. 当unplugin-vue-components版本大于等于0.26.0时，使用以下写法

const { defineConfig } = require("@vue/cli-service")
const AutoImport = require('unplugin-auto-import/webpack')
const Components = require('unplugin-vue-components/webpack')
const { ElementPlusResolver } = require('unplugin-vue-components/resolvers')

module.exports = defineConfig({
  transpileDependencies: true,
  configureWebpack: {
    plugins: [
      AutoImport.default({
        resolvers: [ElementPlusResolver()],
      }),
      Components.default({
        resolvers: [ElementPlusResolver()],
      }),
    ]
  }
})