webpack.config.js

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

module.exports = {
  entry: {
    main: './app.js',
  },
  output: {
    path: path.join(__dirname, 'dist'),
    publicPath: '/',
    filename: 'bundle.js',
  },
  target: 'web',
  devtool: 'source-map',
  devServer: {
    port: 3000,
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
        },
      },
      {
        test: /\.html$/,
        use: [{ loader: 'html-loader' }],
      },
      {
        test: /\.s[ac]ss$/i,
        use: [
          'style-loader',
          'css-loader',
          'sass-loader',
        ],
      },
      {
        test: /\.(png|svg|jpg|gif)$/,
        use: ['file-loader'],
      },
    ],
  },
  plugins: [
    new HtmlWebPackPlugin({
      template: './public/index.html',
      filename: './index.html',
      excludeChunks: ['server'],
    }),
  ],
};