webpack.config.js

const path = require('path');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const CssMinimizerPlugin = require('css-minimizer-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
  entry: path.join(__dirname, 'src/docs'),
  output: {
    path: path.join(__dirname, 'docs'),
    filename: 'bundle.js',
  },
  devtool: 'eval-cheap-module-source-map', // dev only
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        use: 'babel-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.css$/i,
        use: [MiniCssExtractPlugin.loader, 'css-loader'],
        exclude: /node_modules/,
      },
    ],
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: path.join(__dirname, 'src/docs/index.html'),
    }),
    new MiniCssExtractPlugin(),
  ],
  optimization: {
    minimize: true,
    minimizer: [
      '...',
      new CssMinimizerPlugin(),
    ],
  },
  resolve: {
    extensions: ['', '.js', '.jsx'],
  },
  devServer: {
    static: {
      directory: path.join(__dirname, 'docs'),
    },
    compress: true,
    port: 8080,
  },
};