前言：cesium和vue3结合需要用到typescript

1、vue-cli更新到最新版本

npm update -g @vue/cli

2、创建vue3项目

vue create vuets11

选择vue3回车

3、等待安装完成后打开该项目文件夹并打开终端

4、安装typescript

vue add typescript

5、package.json添加如下依赖

{
  "dependencies": {
    "@types/cesium": "^1.67.14",
    "cesium": "^1.83.0",
    "core-js": "^3.6.5",
    "vue": "^3.0.0",
    "vue-class-component": "^8.0.0-0"
  },
  "devDependencies": {
    "@types/copy-webpack-plugin": "^8.0.1",
    "@typescript-eslint/eslint-plugin": "^4.18.0",
    "@typescript-eslint/parser": "^4.18.0",
    "@vue/cli-plugin-babel": "~4.5.0",
    "@vue/cli-plugin-eslint": "~4.5.0",
    "@vue/cli-plugin-typescript": "^4.5.13",
    "@vue/cli-service": "~4.5.0",
    "@vue/compiler-sfc": "^3.0.0",
    "@vue/eslint-config-typescript": "^7.0.0",
    "babel-eslint": "^10.1.0",
    "copy-webpack-plugin": "^5.0.1",
    "eslint": "^6.7.2",
    "eslint-plugin-vue": "^7.0.0",
    "typescript": "~4.1.5"
  }
}

6、安装依赖

npm i

7、main.ts引入cesium

import { createApp } from 'vue'
import App from './App.vue'
import "cesium/Source/Widgets/widgets.css";
const Cesium = require("cesium/Source/Cesium");

const app = createApp(App);
app.provide("$Cesium", Cesium);
app
  .mount("#app");

8、增加vue.config.js文件

const CopyWebpackPlugin = require("copy-webpack-plugin");
const webpack = require("webpack");
const path = require("path");

let cesiumSource = "./node_modules/cesium/Source";
let cesiumWorkers = "Workers";
module.exports = {
  configureWebpack: {
    resolve: {
      alias: {
        "@": path.resolve("src"),
      },
    },
    plugins: [
      new CopyWebpackPlugin([{
        from: path.join(cesiumSource, cesiumWorkers),
        to: "Workers"
      }, ]),
      new CopyWebpackPlugin([{
        from: path.join(cesiumSource, "Assets"),
        to: "Assets"
      }, ]),
      new CopyWebpackPlugin([{
        from: path.join(cesiumSource, "Widgets"),
        to: "Widgets"
      }, ]),
      new CopyWebpackPlugin([{
        from: path.join(cesiumSource, "ThirdParty/Workers"),
        to: "ThirdParty/Workers",
      }, ]),
      new webpack.DefinePlugin({
        CESIUM_BASE_URL: JSON.stringify("./"),
      }),
    ],
    module: {
      unknownContextCritical: false,
      unknownContextRegExp: /\/cesium\/cesium\/Source\/Core\/buildModuleUrl\.js/,
    },
  },
};

9、添加测试文件init.vue（记得要引入组件）

<template>
  <div id="cesiumContainer"></div>
</template>

<script>
import { defineComponent, inject, onMounted } from "@vue/runtime-core";
export default defineComponent({
  setup() {
    let Cesium = inject("$Cesium");
    onMounted(() => {
      let viewer = new Cesium.Viewer("cesiumContainer", {
        imageryProvider: new Cesium.ArcGisMapServerImageryProvider({
          url: "https://map.geoq.cn/ArcGIS/rest/services/ChinaOnlineStreetPurplishBlue/MapServer",
        }),
      });
      console.info(viewer)
    });
    return {};
  },
});
</script>

<style>
#cesiumContainer {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}
</style>

10、运行（大功告成）

npm run serve