webpack.common.js

const path = require('path');

const webpack = require('webpack');

const CleanWebpackPlugin = require('clean-webpack-plugin');
const CopyPlugin = require('copy-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
  entry: {
    main: path.join(__dirname, 'src', 'index.jsx'),
    react: ['react', 'react-dom'],
  },
  output: {
    filename: '[name].bundle.js',
    path: path.resolve(__dirname, 'dist'),
    publicPath: '/',
  },
  resolve: {
    modules: [path.resolve(__dirname, 'src'), 'node_modules'],
    alias: {
      '@todomvc': path.resolve('src'),
    },
  },
  module: {
    rules: [
      {
        // this is so that we can compile any React,
        // ES6 and above into normal ES5 syntax
        test: /\.(js|jsx)$/,
        resolve: {
          extensions: ['.js', '.jsx'],
        },
        // we do not want anything from node_modules to be compiled
        exclude: /node_modules/,
        use: ['babel-loader?cacheDirectory=true'],
      },
      {
        test: /\.(css)$/,
        use: [
          'style-loader', // creates style nodes from JS strings
          'css-loader', // translates CSS into CommonJS
        ],
      },
      {
        test: /\.(jpg|jpeg|png|gif|mp3)$/,
        loaders: ['file-loader'],
      },
      {
        test: /\.svg$/,
        loader: 'svg-inline-loader',
      },
      {
        test: /\.(graphql|gql)$/,
        exclude: /node_modules/,
        loader: 'graphql-tag/loader',
      },
    ],
  },
  plugins: [
    new webpack.ProgressPlugin(),
    new CleanWebpackPlugin(),
    new CopyPlugin([{ from: 'public', to: './' }]),
    new HtmlWebpackPlugin({
      template: path.join(__dirname, 'src', 'index.html'),
    }),
  ],
  optimization: {
    runtimeChunk: 'single',
    splitChunks: {
      chunks: 'all',
    },
  },
  stats: {
    // Examine all modules
    maxModules: Infinity,
    // Display bailout reasons
    optimizationBailout: true,
  },
};