ArcGIS API for JavaScript 4.18以后的版本4.18 4.19 4.20 4.21 4.22 4.23支持ES Modules模式了，默认的API是访问CDN的，内网本地化修改，其中React版本的本地化参考链接，本篇为Vue3版本，分享出来。主要参考官网的参考文档解决的，具体链接：https://developers.arcgis.com/javascript/latest/es-modules/

步骤：
1、Vue cli创建前端工程后，终端输入yarn安装依赖，会将"@arcgis/core": “^4.22.2”,@arcgis/core下载到node_modules目录下，
package.json文件内容：

{
  "name": "dq-gis-vue3-esm",
  "version": "0.1.0",
  "private": true,
  "scripts": {
    "serve": "vue-cli-service serve",
    "build": "vue-cli-service build",
    "lint": "vue-cli-service lint"
  },
  "dependencies": {
    "@arcgis/core": "^4.22.2",
    "core-js": "^3.8.3",
    "element-plus": "^2.0.2",
    "vue": "^3.2.13",
    "vue-router": "^4.0.3",
    "vuex": "^4.0.0"
  },
  "devDependencies": {
    "@babel/core": "^7.12.16",
    "@babel/eslint-parser": "^7.12.16",
    "@vue/cli-plugin-babel": "~5.0.0",
    "@vue/cli-plugin-eslint": "~5.0.0",
    "@vue/cli-plugin-router": "~5.0.0",
    "@vue/cli-plugin-vuex": "~5.0.0",
    "@vue/cli-service": "~5.0.0",
    "eslint": "^7.32.0",
    "eslint-plugin-vue": "^8.0.3"
  },
  "eslintConfig": {
    "root": true,
    "env": {
      "node": true
    },
    "extends": [
      "plugin:vue/vue3-essential",
      "eslint:recommended"
    ],
    "parserOptions": {
      "parser": "@babel/eslint-parser"
    },
    "rules": {}
  },
  "browserslist": [
    "> 1%",
    "last 2 versions",
    "not dead",
    "not ie 11"
  ]
}

2、将./node_modules/@arcgis/core/assets文件夹内容复制到src文件夹的assets下和public文件夹下，最终目录结构如下：

3、修改App.vue，导入ArcGIS的样式

/* 导入ArcGIS的样式 */
@import "./assets/esri/themes/light/main.css";

App.vue全部代码：

<template>
  <div id="app">
    <router-view/>
  </div>
</template>
<script>
export default {
  name: 'App'
}
</script>
<style>
/* 导入ArcGIS的样式 */
@import "./assets/esri/themes/light/main.css";
#app {
  font-family: 'Avenir', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
html,
body,
#app {
  padding: 0;
  margin: 0;
  height: 100%;
  width: 100%;
}
</style>

4、修改main.js，配置本地读取，设置portal

import esriConfig from "@arcgis/core/config.js";
esriConfig.assetsPath = "./assets";
esriConfig.portalUrl = "https://DESKTOP-FGFN0F6.arcgisonline.cn/portal";

main.js全部代码：

import { createApp } from 'vue'
import App from './App.vue'
import router from './router'
import store from './store'

import esriConfig from "@arcgis/core/config.js";
esriConfig.assetsPath = "./assets";
esriConfig.portalUrl = "https://DESKTOP-FGFN0F6.arcgisonline.cn/portal";

import ElementPlus from 'element-plus'
import 'element-plus/dist/index.css'

createApp(App).use(store).use(router).use(ElementPlus).mount('#app')

5、目录结构

6、运行起来后效果：