boot.js

// start bootstrap
require("../bootstrap.js");

// wait for app
var app;
// if ready set app
mediator.on('server.listening', function(server) {
  app = server;
});

is.config({
  "server": {
    "factory": function(cb) {
      // when vows ask for server either give it
      if (app) {
        return cb(app);
      }
      // or wait for it to start
      mediator.on("server.listening", function(s) { cb(s); }
    }
  }
});