webpack.config.js

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

module.exports = {
  // Entry
  entry: './src/index.js',
  // Output
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'bundle.js',
  },
  // Mode
  mode: 'production',
  // Loader
  module: {
    rules: [
      {
        // CSS Loader
        test: /\.css$/,
        use: [
          {
            loader: 'style-loader',
          },
          {
            loader: 'css-loader',
          },
        ],
      },
      {
        // BABEL Loader
        test: /\.js$/,
        exclude: '/node_modules/',
        use: [
          {
            loader: 'babel-loader',
            options: {
              presets: ['@babel/preset-env'],
            },
          },
        ],
      },
    ],
  },
  // Plugin
  plugins: [
    // Plugin: HTML Webpack
    new HtmlWebpackPlugin({
      template: './src/template.html',
      filename: 'index.html',
    }),
  ],
};