text: var path = require('path');
  module.exports = {
    entry: './src/ImagePlaceholder.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']
            }
          }
        }
      ]
    },
    externals: {
      'react': 'commonjs react'
    }
  };
  