webpack.config.js

const webpack = require('webpack'); // eslint-disable-line

// Plugins.
const HtmlWebPackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const CleanWebpackPlugin = require('clean-webpack-plugin');
const FaviconsWebpackPlugin = require('favicons-webpack-plugin');
const OptimizeCssAssetsPlugin = require('optimize-css-assets-webpack-plugin');
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
const nano = require('cssnano');
const path = require('path');

const paths = {
  images: path.join(__dirname, './src/images'),
};

module.exports = {
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            plugins: ['react-hot-loader/babel'],
          },
        },
      },
      {
        test: /\.(png|gif|jpg|jpeg|svg)$/,
        include: paths.images,
        use: 'url-loader?limit=20480&name=assets/[name]-[hash].[ext]',
      },
      {
        test: /\.html$/,
        use: [
          {
            loader: 'html-loader',
            options: { minimize: true },
          },
        ],
      },
      {
        test: /\.scss$/,
        use: ['css-hot-loader', MiniCssExtractPlugin.loader, 'css-loader', 'sass-loader?sourceMap', 'postcss-loader'],
      },
    ],
  },
  output: {
    filename: 'assets/[name]-[hash].js',
  },
  plugins: [
    new FaviconsWebpackPlugin('./src/images/1f60e.png'),
    new HtmlWebPackPlugin({
      template: './src/index.html',
      filename: 'index.html',
    }),
    new MiniCssExtractPlugin({
      filename: process.env.NODE_ENV === 'production' ? 'assets/[name]-[hash].css' : 'assets/[name].css',
    }),
    new CleanWebpackPlugin(['dist']),
    new OptimizeCssAssetsPlugin({
      assetNameRegExp: /\.optimize\.scss$/g,
      cssProcessor: nano,
      cssProcessorOptions: { discardComments: { removeAll: true } },
      canPrint: true,
    }),
    new UglifyJsPlugin({
      uglifyOptions: {
        compress: {
          drop_console: true,
        },
        dead_code: true,
      },
    }),
  ],
  resolve: {
    extensions: ['.webpack-loader.js', '.web-loader.js', '.loader.js', '.js', '.jsx'],
    alias: {
      images: paths.images,
    },
  },
  mode: process.env.NODE_ENV,
};