webpack.config.js

// The path to the CesiumJS source code
const cesiumSource = 'node_modules/cesium/Source';
const cesiumWorkers = '../Build/Cesium/Workers';

const path = require('path');

const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CopywebpackPlugin = require('copy-webpack-plugin');

module.exports = {
  context: __dirname,
  entry: {
    app: './src/index.js'
  },
  output: {
    filename: '[name].js',
    path: path.resolve(__dirname, 'dist'),

    // Needed to compile multiline strings in Cesium
    sourcePrefix: ''
  },
  amd: {
    // Enable webpack-friendly use of require in Cesium
    toUrlUndefined: true
  },
  node: {
    // Resolve node module use of fs
    fs: 'empty'
  },
  resolve: {
    alias: {
      // CesiumJS module name
      cesium: path.resolve(__dirname, cesiumSource)
    }
  },
  module: {
    rules: [{
      test: /\.css$/,
      use: ['style-loader', 'css-loader']
    }, {
      test: /\.(png|gif|jpg|jpeg|svg|xml|json)$/,
      use: ['url-loader']
    }, {
      // Strip cesium pragmas
      test: /\.js$/,
      enforce: 'pre',
      include: path.resolve(__dirname, cesiumSource),
      use: [{
        loader: 'strip-pragma-loader',
        options: {
          pragmas: {
            debug: false
          }
        }
      }]
    }]
  },
  optimization: {
    minimize: true,
    runtimeChunk: {
      name: entrypoint => `runtime~${entrypoint.name}`
    }
  },
  devtool: 'eval',
  plugins: [
    new HtmlWebpackPlugin({
      template: 'src/index.html'
    }),
    // Copy Cesium Assets, Widgets, and Workers to a static directory
    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 webpack.ProvidePlugin({
      $: 'jquery',
      jQuery: 'jquery'
    })
  ]
};