text: module.exports = {
  	devtool: 'none' // default
  	
  	// original source
  	devtool: 'eval-source-map'                // fast
  	devtool: 'inline-source-map'              // slowest
  	devtool: 'source-map'                     // slowest
  	
  	devtool: 'eval-cheap-module-source-map'   // fastest (lines only)
  	devtool: 'cheap-module-source-map'        // slower  (lines only)
  	devtool: 'inline-cheap-module-source-map' // slower  (lines only)
  	
  	// transformed code
  	devtool: 'eval-cheap-source-map' // fastest (lines only)
  };
  
  // https://webpack.js.org/configuration/devtool/