webpack.config.js

const path = require('path');

const HTMLWebPlugin = require('html-webpack-plugin');

module.exports = {
  mode: 'development',
  entry: path.resolve(__dirname, 'src', 'js', 'app.js'),
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'app.min.js',
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
        },
      },
      {
        test: /\.html$/,
        use: {
          loader: 'html-loader',
          options: { minimize: true },
        },
      },
      {
        test: /\.(png|jpe?g|gif)$/i,
        use: [
          {
            loader: 'file-loader',
            options: {
              esModule: false,
            },
          },
        ],
      },
      {
        test: /\.s[ac]ss$/i,
        use: ['style-loader', 'css-loader', 'sass-loader'],
      },
    ],
  },
  devServer: {
    contentBase: path.join(__dirname, 'dist'),
    watchOptions: {
      aggregateTimeout: 300,
      poll: 1000,
    },
  },
  plugins: [
    new HTMLWebPlugin({
      template: './src/index.html',
      filename: './index.html',
    }),
  ],
};