main.server.ts

import { renderModuleFactory } from '@angular/platform-server';
import { enableProdMode } from '@angular/core';
import { AppServerModuleNgFactory } from './aot/src/app/app.server.module.ngfactory';
import * as express from 'express';
import * as fs from 'fs';

enableProdMode();

const app = express();

const ngEngine = (filePath, options, callback) => {
  const file = fs.readFileSync(filePath).toString();
  renderModuleFactory(AppServerModuleNgFactory, {
    document: file,
    url: options.req.url
  })
  .then(string => {
    callback(null, string);
  });
};

app.engine('html', ngEngine);

app.set('view engine', 'html');
app.set('views', '.');

app.use(express.static('.'));

app.get('*', (request, response) => {
  response.render('index', { req: request });
});

app.listen(8000, () => {
  console.log('listening...');
});