Webpack ошибка, Как исправить?

const path = require("path"); 
const ExtractTextPlugin = require("extract-text-webpack-plugin"); 
 
function cssLoaders(options) { 
	var cssLoader = { 
		loader: 'css-loader', 
		options: { 
			minimize: options.extract, 
			sourceMap: options.sourceMap, 
			modules: true 
		} 
	} 
	function generateLoaders(loader) { 
    var loaders = [cssLoader] 
    if(loader) { 
    	loaders.push({ 
    		loader: loader, 
    		options: { 
			sourceMap: options.sourceMap, 
		} 
    	}) 
    } 
    if (options.extract) { 
    	return ExtractTextPlugin.extract({ 
    		use: loaders, 
    		fallback: 'style-loader' 
    	}) 
    } else { 
    	return ['style-loader'].concat(loaders); 
    } 
	} 
	return { 
		css: generateLoaders(), 
		scss: generateLoaders('sass-loader') 
	} 
} 
 
exports.styleLoaders = function (options) { 
  var output = [], 
  var loaders = cssLoaders(options) 
  for (var ext in loaders) { 
    var loader = loaders[ext], 
    output.push({ 
      test: new RegExp('\\.' + ext + '$'), 
      use: loader 
    }) 
  } 
  return output; 
}