Using closure-util package instead of Plovr for ol3

serve.js

var path = require('path');
var url = require('url');

var log = require('npmlog');
var closure = require('closure-util');

log.info('serve', 'Parsing dependencies ...');

var root = '.'; // assumes you're running this from ol3 repo

var manager = new closure.Manager({
  closure: true,
  paths: [
    path.join(root, 'src/**/*.js'),
    path.join(root, 'examples/*.js')
  ]
});
manager.on('error', function(e) {
  log.error('serve', e.message);
});
manager.on('ready', function() {
  var server = new closure.Server({
    manager: manager,
    root: root,
    loaderPath: '/examples/loader.js',
    getMain: function(req) {
      var main;
      var query = url.parse(req.url, true).query;
      if (query.id) {
        var referer = req.headers.referer;
        if (referer) {
          var from = path.join(root, path.dirname(url.parse(referer).pathname));
          main = path.resolve(from, query.id + '.js');
        }
      }
      return main;
    }
  });
  server.listen(3000, function() {
    log.info('serve', 'Listening on http://localhost:3000/ (Ctrl+C to stop)');
  });
});