webpack.dev.js

const webpack = require('webpack')
const path = require('path')

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

/*
 * We've enabled Postcss, autoprefixer and precss for you. This allows your app
 * to lint  CSS, support variables and mixins, transpile future CSS syntax,
 * inline images, and more!
 *
 * To enable SASS or LESS, add the respective loaders to module.rules
 *
 * https://github.com/postcss/postcss
 *
 * https://github.com/postcss/autoprefixer
 *
 * https://github.com/jonathantneal/precss
 *
 */

const autoprefixer = require('autoprefixer')
const precss = require('precss')

/*
 * We've enabled MiniCssExtractPlugin for you. This allows your app to
 * use css modules that will be moved into a separate CSS file instead of inside
 * one of your module entries!
 *
 * https://github.com/webpack-contrib/mini-css-extract-plugin
 *
 */

const MiniCssExtractPlugin = require('mini-css-extract-plugin')

/*
 * SplitChunksPlugin is enabled by default and replaced
 * deprecated CommonsChunkPlugin. It automatically identifies modules which
 * should be splitted of chunk by heuristics using module duplication count and
 * module category (i. e. node_modules). And splits the chunks…
 *
 * It is safe to remove "splitChunks" from the generated configuration
 * and was added as an educational example.
 *
 * https://webpack.js.org/plugins/split-chunks-plugin/
 *
 */

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

module.exports = {
  context: __dirname,
  devtool: 'inline-source-map',
  mode: 'development',
  devServer: {
    contentBase: './dist'
  },
  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: {
      // Cesium module name
      cesium: path.resolve(__dirname, cesiumSource)
    }
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        include: [path.resolve(__dirname, 'src')],
        exclude: /node_modules/,
        loader: 'babel-loader',

        options: {
          presets: [
            ['env',
              {
                'targets': {
                  'node': 'current'
                },
                modules: false
              }]
          ],

          plugins: ['syntax-dynamic-import']
        }
      },
      {
        test: /\.css$/,

        use: [
          {
            loader: 'style-loader'
          },
          {
            loader: 'css-loader',

            /*options: {
              sourceMap: true,
              importLoaders: 1
            }*/
          }/*,
          {
            loader: 'postcss-loader',

            options: {
              plugins: function () {
                return [precss, autoprefixer]
              }
            }
          }*/
        ]
      },
      {
        test: /\.(png|gif|jpg|jpeg|svg|xml|json)$/,
        use: ['url-loader']
      }
    ]
  },
  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.DefinePlugin({
      // Define relative base path in cesium for loading assets
      CESIUM_BASE_URL: JSON.stringify('')
    })
  ]

}