I looked at the documentation for extract-text-webpack-plugin, but I just can not run it. Just ignore style.less> style.css
var StaticSiteGeneratorPlugin = require('static-site-generator-webpack-plugin') var ExtractTextPlugin = require("extract-text-webpack-plugin") var data = require('./data') module.exports = { entry: './entry.js', output: { filename: 'bundle.js', path: __dirname, libraryTarget: 'umd' }, module: { loaders: [ { test: /\.jsx?$/, loader: 'babel', exclude: /node_modules/, query: { presets: ['es2016', 'react'] } }, { test: /\.less$/, loader: ExtractTextPlugin.extract("style-loader", "css-loader!less-loader")}, { test: /\.css$/, loader: ExtractTextPlugin.extract("style-loader", "css-loader")}, { test: /\.png$/, loader: "url-loader?limit=100000" }, { test: /\.jpg$/, loader: "file-loader" } ] }, plugins: [ new ExtractTextPlugin('[name].css'), new StaticSiteGeneratorPlugin('bundle.js', data.routes, data) ] } 