text: const path = require('path');
  
  module.exports = {
    entry: './src/index.js',
    output: {
      path: path.resolve(__dirname, 'build'),
      filename: 'index.js',
      libraryTarget: 'commonjs2' // THIS IS THE MOST IMPORTANT LINE! :mindblow: I wasted more than 2 days until realize this was the line most important in all this guide.
    },
    module: {
      rules: [
        {
          test: /\.js$/,
          include: path.resolve(__dirname, 'src'),
          exclude: /(node_modules|bower_components|build)/,
          use: {
            loader: 'babel-loader',
            options: {
              presets: ['env']
            }
          }
        },
        {
          test: /\.js$/,
          exclude: /node_modules/,
          use: ['babel-loader', 'eslint-loader']
        },
      ]
    },
  };
  