webpack.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const CssMinimizerPlugin = require('css-minimizer-webpack-plugin');
const TerserPlugin = require('terser-webpack-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');

module.exports = {
  entry: './src/index.js',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'bundle.js',
    publicPath: '/',
  },
  resolve: {
    extensions: ['.js', '.jsx'],
    alias: {
      '@components': path.resolve(__dirname, 'src/components/'),
      '@styles': path.resolve(__dirname, 'src/styles/'),
    },
  },
  mode: 'production',
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
        },
      },
      {
        test: /\.html$/,
        use: [{ loader: 'html-loader' }],
      },
      {
        test: /\.s[ac]ss$/,
        use: ['style-loader', 'css-loader', 'sass-loader'],
      },
    ],
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: './public/index.html',
      filename: './index.html',
    }),
    new MiniCssExtractPlugin({
      filename: '[name].css',
    }),
    new CleanWebpackPlugin(),
  ],
  optimization: {
    minimize: true,
    minimizer: [new CssMinimizerPlugin(), new TerserPlugin()],
  },
};