Wrapper for jQuery promises to make them behave a little more like rsvp.js. Depends on jQuery and Underscore.

promises.js

exports.promise = function(work) {
  var dfd = $.Deferred();
  work(dfd.resolve, dfd.reject);
  return dfd.promise();
};

exports.promiseResolved = function() {
  return $.Deferred().resolve().promise();
};

exports.promiseRejected = function() {
  return $.Deferred().reject().promise();
};

exports.when = function() {
  // Create an array of promises from the passed args.
  var promises = _.flatten(arguments);
  return $.when.apply($, promises);
};