webpack.config.js

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

module.exports = {
  entry: {
    main: path.resolve(__dirname, 'src', 'index.js'),
    instruction: path.resolve(__dirname, 'src', 'instruction.js'),
  },
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: '[name].[contenthash].js',
    clean: true,
  },
  devtool: 'inline-source-map',
  devServer: {
    watchFiles: ['./src/*'],
  },
  module: {
    rules: [
      {
        test: /\.(scss)$/,
        use: [
          {
            loader: 'style-loader',
          },
          {
            loader: 'css-loader',
          },
          {
            loader: 'postcss-loader',
            options: {
              postcssOptions: {
                plugins: () => [
                  require('autoprefixer'),
                ],
              },
            },
          },
          {
            loader: 'sass-loader',
          },
        ],
      },
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env'],
          },
        },
      },
      {
        test: /\.(png|svg|jpg|gif|ico|woff(2)?|eot|ttf|otf)$/,
        type: 'asset/resource',
      },
    ],
  },
  plugins: [
    new HtmlWebpackPlugin({
      filename: 'index.html',
      template: path.resolve(__dirname, 'src', 'index.html'),
      chunks: ['main'],
    }),
    new HtmlWebpackPlugin({
      filename: 'instruction.html',
      template: path.resolve(__dirname, 'src', 'instruction.html'),
      chunks: ['instruction'],
    }),
  ],
};