vue-cli配置cesium

const path = require('path')
const webpack = require('webpack')
const cesiumSource = './node_modules/cesium/Source'
const cesiumWorkers = '../Build/Cesium/Workers'
const CopyWebpackPlugin = require('copy-webpack-plugin')
const publicPath = '/'
module.exports = {
  publicPath,
  devServer: {
    open: true,
  },
  configureWebpack: {
    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(publicPath),
      }),
    ],
    resolve: {
      alias: {
        vue$: 'vue/dist/vue.esm.js',
        '@': path.resolve('src'),
        cesium: path.resolve(__dirname, cesiumSource),
      },
    },
  },
}