var config = require('./config.web'); var webpack = require('webpack'); var WebpackDevServer = require('webpack-dev-server'); var port = parseInt(process.env.PORT) || 5555; config.entry.app = [ 'webpack-dev-server/client?http://localhost:' + port + '/', 'webpack/hot/dev-server' ]; var compiler = webpack(config); var server = new WebpackDevServer(compiler, { hot: true }); server.listen(port);