Angular SPA webserver

angspa.js

/* -*- coding: UTF-8, tab-width: 2 -*- */
/*jslint indent: 2, maxlen: 80, continue: true, unparam: true, node: true */
'use strict';

/***** Angular Single Page Application Web Server *****
 *  Example for how to enhance a simple static webserver with route
 *  exceptions. Simple = without a big framework like express.
 *  Background is to serve angular single page applications (SPA) for
 *  the HTML 5 path API, for which the same file shall be served under
 *  many different names and paths.
 **/

var spaServer, spaFilter,
  http = require('http'),
  pathLib = require('path'),
  ecstatic = require('ecstatic'),
  spaHttpPort = (+process.env.PORT || 8080),
  moduleDir = pathLib.dirname(module.filename),
  serveStaticFiles = ecstatic({ root: moduleDir });


spaFilter = function (req, res) {
  var reqUrl = String(req.url),
    reqDir = reqUrl.replace(/^\/+/, '').split(/\/+/, 1)[0];
  console.log('I: Request for ' + JSON.stringify(reqUrl) +
    ' = directory ' + JSON.stringify(reqDir));
  switch (reqDir) {
  case 'img':
  case 'views':
  case 'favicon.ico':
  case 'robots.txt':
    break;
  default:
    req.url = '/index.html';
    break;
  }
  serveStaticFiles(req, res);
};



spaServer = http.createServer();
spaServer.on('request', spaFilter);
spaServer.on('error', function reportServerError(err) {
  console.error('E: Server error: ' + String(err));
});
spaServer.listen(spaHttpPort, function whenListening() {
  // no err param: on failure, the server will emit an error event instead.
  console.log('I: Now listening on *:' + spaHttpPort +
    ', will serve files from ' + moduleDir);
});