webpack.config.js

'use strict'
const path = require('path')
const webpack = require('webpack')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const yWorksOptimizer = require('@yworks/optimizer/webpack-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const { CleanWebpackPlugin } = require('clean-webpack-plugin')
const CopyPlugin = require('copy-webpack-plugin')

module.exports = function (env, options) {
  const config = {
    entry: ['core-js/stable', 'regenerator-runtime/runtime', './app/app.ts'],

    output: {
      path: path.resolve(__dirname, 'dist'),
      filename: '[name].js',
    },
    resolve: {
      // Add '.ts' and '.tsx' as a resolvable extension.
      extensions: ['.webpack.js', '.web.js', '.ts', '.tsx', '.js', '.jsx'],
    },
    module: {
      rules: [
        {
          // Include ts, tsx, js, and jsx files.
          test: /\.(ts|js)x?$/,
          exclude: /node_modules|app[/\\]data[/\\]/,
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env', '@babel/preset-typescript'],
            plugins: ['@babel/plugin-proposal-object-rest-spread'],
          },
        },
        {
          test: /\.css$/,
          use: [MiniCssExtractPlugin.loader, 'css-loader'],
          sideEffects: true,
        },
        {
          test: /\.(png|svg|jpg|gif)$/,
          use: ['file-loader'],
        },
      ],
    },
    optimization: {
      splitChunks: {
        cacheGroups: {
          lib: {
            test: /([\\/]lib)|([\\/]node_modules[\\/])/,
            name: 'lib',
            chunks: 'all',
          },
        },
      },
    },
    plugins: [
      new CleanWebpackPlugin(),
      // https://stackoverflow.com/questions/28969861/managing-jquery-plugin-dependency-in-webpack
      new webpack.ProvidePlugin({
        $: 'jquery',
        jQuery: 'jquery',
      }),
      new MiniCssExtractPlugin({
        filename: '[name].css',
        chunkFilename: '[id].css',
      }),
      new HtmlWebpackPlugin({
        template: 'app/index.html',
        alwaysWriteToDisk: true,
      }),
      new CopyPlugin([
        { from: 'app/assets', to: 'assets' },
        { from: 'app/styles', to: 'styles' },
        { from: 'app/favicon.ico', to: 'favicon.ico' },
      ]),
    ],
    performance: {
      hints: false,
    },
  }

  config.devServer = {
    contentBase: [path.join(__dirname, './app')],
    compress: true,
    port: 8085,
  }

  if (options.mode === 'development') {
    // don't add the default SourceMapDevToolPlugin config
    config.devtool = false
    config.plugins.push(
      new webpack.SourceMapDevToolPlugin({
        filename: '[file].map',
        // add source maps for non-library code to enable convenient debugging
        exclude: ['lib.js'],
      })
    )
  }

  if (options.mode === 'production') {
    // Obfuscate yFiles modules and usages for production build
    config.plugins.unshift(
      new yWorksOptimizer({
        logLevel: 'info',
        blacklist: ['union', 'range'],
      })
    )
  }

  return config
}