change the cesium to @cesium/engine

.gitignore

 *.njsproj
 package-lock.json
 .DS_Store
+/examples

build/common.js

     {
       test: /\.js$/,
       include: [
-        path.resolve(__dirname, '../node_modules/cesium'),
+        path.resolve(__dirname, '../node_modules/@cesium'),
         path.resolve(__dirname, '../libs'),
         path.resolve(__dirname, '../modules'),
         path.resolve(__dirname, '../packages')

build/webpack.base.conf.js

 const path = require('path')
 const webpack = require('webpack')
 const CopyWebpackPlugin = require('copy-webpack-plugin')
-const cesiumBuild = '../node_modules/cesium/Build/Cesium'
 const common = require('./common')
 
 let cesiumCopyPlugin = [
   new CopyWebpackPlugin([
     {
-      from: path.resolve(__dirname, cesiumBuild, 'Assets'),
+      from: path.resolve(
+        __dirname,
+        '../node_modules/@cesium/engine/Source',
+        'Assets'
+      ),
       to: 'resources/Assets'
     },
     {
-      from: path.resolve(__dirname, cesiumBuild, 'Workers'),
+      from: path.resolve(
+        __dirname,
+        '../node_modules/@cesium/engine/Build',
+        'Workers'
+      ),
       to: 'resources/Workers'
-    },
-    {
-      from: path.resolve(__dirname, cesiumBuild, 'ThirdParty'),
-      to: 'resources/ThirdParty'
     }
   ])
 ]
       umdNamedDefine: true
     },
     module: {
-      // unknownContextCritical: false,
+      unknownContextCritical: false,
       rules: common.rules
     },
     resolve: {

modules/exts/BaseLayerPicker.js

+/**
+ * @Author: Caven
+ * @Date: 2023-01-07 15:49:26
+ */
+
+class BaseLayerPicker {}
+
+export default BaseLayerPicker

modules/exts/index.js

  */
 
 export { default as GroundSkyBox } from './GroundSkyBox'
+export { default as CesiumViewer } from './CesiumViewer'

modules/themes/index.js

  * @Date: 2020-01-21 10:48:50
  */
 
-import 'cesium/Widgets/widgets.css'
 import './index.scss'
 import './popup.scss'
 import './tooltip.scss'

package.json

     "@babel/plugin-transform-runtime": "^7.4.0",
     "@babel/polyfill": "^7.4.0",
     "@babel/preset-env": "^7.4.2",
-    "@turf/turf": "^6.3.0",
     "babel-eslint": "^10.0.1",
     "babel-loader": "^8.0.5",
-    "cesium": "^1.98.1",
     "chalk": "^4.1.0",
     "copy-webpack-plugin": "^5.0.2",
     "css-loader": "^2.1.1",
     "webpack-cli": "^3.3.0",
     "webpack-glsl-loader": "^1.0.1",
     "webpack-obfuscator": "^1.8.0"
+  },
+  "dependencies": {
+    "@cesium/engine": "^1.1.0",
+    "@turf/turf": "^6.3.0"
   }
 }

packages/base/index.js

  * @Date: 2021-03-12 16:45:45
  */
 
-import * as Cesium from 'cesium'
 import * as turf from '@turf/turf'
 import { initMixin, initUse } from '@dc-modules/global-api'
+import { CesiumViewer, GroundSkyBox } from '@dc-modules/exts'
+const Cesium = require('@cesium/engine')
+
+Cesium['Viewer'] = CesiumViewer
+Cesium['GroundSkyBox'] = GroundSkyBox
 
 let DC = {
   version: __VERSION__,