server.js

var webpack = require('webpack');
var WebpackDevServer = require('webpack-dev-server');
var config = require('./webpack.config.dev');
var opn = require('opn');

new WebpackDevServer(webpack(config), {
  publicPath: config.output.publicPath,
  historyApiFallback: true,
  quiet: true, // lets WebpackDashboard do its thing
}).listen(3000, 'localhost', function(err, result) {
  if (err) console.log(err);
  opn('http://localhost:3000');
  console.log('Listening at localhost:3000');
});