webpack.config.common.js

const webpack = require('webpack');
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const WebappWebpackPlugin = require('webapp-webpack-plugin');

module.exports = {
  entry: path.join(__dirname, 'app/index.js'),
  output: {
    filename: '[name].js',
    path: path.join(__dirname, 'dist')
  },
  mode: process.env.NODE_ENV,
  module: {
    rules: [
      {
        test: /\.jsx?$/,
        exclude: /node_modules/,
        loader: 'babel-loader'
      },
      {
        test: /\.styl$/,
        loader: ['style-loader', 'css-loader', 'stylus-loader']
      },
      {
        test: /\.(eot|otf|ttf|woff)$/,
        loader: 'file-loader'
      },
      {
        test: /\.(png|svg|jpg|gif)$/,
        loader: 'url-loader'
      }
    ]
  },
  node: {
    fs: 'empty'
  },
  resolve: {
    extensions: ['.js', '.jsx']
  },
  optimization: {
    splitChunks: {
      chunks: 'all',
      maxInitialRequests: Infinity,
      minSize: 0,
      cacheGroups: {
        vendor: {
          test: /[\\/]node_modules[\\/]/,
          name(module) {
            // get the name. E.g. node_modules/packageName/not/this/part.js or node_modules/packageName
            const packageName = module.context.match(/[\\/]node_modules[\\/](.*?)([\\/]|$)/)[1];

            // npm package names are URL-safe, but some servers don't like @ symbols
            return `npm.${packageName.replace('@', '')}`;
          }
        }
      }
    }
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV)
    }),
    new HtmlWebpackPlugin({
      template: path.join(__dirname, 'app/index.html')
    }),
    new WebappWebpackPlugin({ logo: path.join(__dirname, 'dist/img/favicon.png'), inject: true })
  ]
};