vue.config.js

const { defineConfig } = require('@vue/cli-service')
const path = require('path')
const webpack = require('webpack')
const CopyWebpackPlugin = require('copy-webpack-plugin')

function resolve(dir) {
  return path.join(__dirname, dir)
}

module.exports = defineConfig({
  transpileDependencies: true,
  configureWebpack: {
    resolve: {
      alias: {
        '@': resolve('src'),
      },
    },
    amd: {
      toUrlUndefined: true,
    },
    module: {
      unknownContextCritical: false,
    },
    plugins: [
      new CopyWebpackPlugin({
        patterns: [
          {
            from: 'node_modules/cesium/Build/Cesium/Workers',
            to: 'cesium/Workers',
          },
          {
            from: 'node_modules/cesium/Build/Cesium/ThirdParty',
            to: 'cesium/ThirdParty',
          },
          {
            from: 'node_modules/cesium/Build/Cesium/Assets',
            to: 'cesium/Assets',
          },
          {
            from: 'node_modules/cesium/Build/Cesium/Widgets',
            to: 'cesium/Widgets',
          },
        ],
      }),
      new webpack.DefinePlugin({
        // Define relative base path in cesium for loading assets
        CESIUM_BASE_URL: JSON.stringify('./cesium'),
      }),
    ],
  },
})