text: const path = require('path');
  
  module.exports = (env = {}) => ({
    mode: 'production',
    entry: {
      app: ['./src/index.js']
    },
    output: {
      library: 'd3tooltip',
      libraryTarget: 'umd',
      path: path.resolve(__dirname, 'dist'),
      filename: env.minimize ? 'd3tooltip.min.js' : 'd3tooltip.js'
    },
    module: {
      rules: [
        {
          test: /\.js$/,
          loader: 'babel-loader',
          exclude: /node_modules/
        }
      ]
    },
    optimization: {
      minimize: !!env.minimize
    },
    performance: {
      hints: false
    }
  });
  