text: var path = require('path');
  module.exports = {
    entry: './src/index.js',
    output: {
      path: path.resolve(__dirname, 'build'),
      filename: 'index.js',
      libraryTarget: 'commonjs2',
    },
    module: {
      rules: [
        {
          test: /\.js$/,
          include: path.resolve(__dirname, 'src'),
          exclude: /(node_modules|bower_components|build)/,
          use: {
            loader: 'babel-loader',
            options: {
              presets: ['env'],
            },
          },
        },
        {
          test: /\.css$/,
          use: ['style-loader', 'css-loader'],
        },
      ],
    },
    externals: {
      react: 'commonjs react',
    },
  };
  