server.js

var http = require('http');

var express = require('express');

require('console-stamp')(console, 'HH:MM:ss.l');

var app = express();

app.use(require('morgan')('short'));

// ************************************
// This is the real meat of the example
// ************************************
(function () {
  // Step 1: Create & configure a webpack compiler
  var webpack = require('webpack');
  var webpackConfig = require(process.env.WEBPACK_CONFIG
    ? process.env.WEBPACK_CONFIG
    : './webpack.config');
  var compiler = webpack(webpackConfig);

  // Step 2: Attach the dev middleware to the compiler & the server
  app.use(
    require('webpack-dev-middleware')(compiler, {
      logLevel: 'warn',
      publicPath: webpackConfig.output.publicPath,
    })
  );

  // Step 3: Attach the hot middleware to the compiler & the server
  app.use(
    require('webpack-hot-middleware')(compiler, {
      log: console.log,
      path: '/__webpack_hmr',
      heartbeat: 10 * 1000,
    })
  );
})();

// Do anything you like with the rest of your express application.

app.get('/', function (req, res) {
  res.sendFile(__dirname + '/index.html');
});
app.get('/multientry', function (req, res) {
  res.sendFile(__dirname + '/index-multientry.html');
});

if (require.main === module) {
  var server = http.createServer(app);
  server.listen(process.env.PORT || 1616, "localhost", function () {
    console.log('Listening on %j', server.address());
  });
}