Async version of "require" for requireJS in WinJS Apps

requireAsync.js

window.requireAsync = function(deps) {
  if (arguments.length === 0) {
    throw new TypeError("requireAsync: No dependencies given");
  }
  if (typeof deps === "string" && arguments.length === 1) {
    deps = deps.split(",");
  } else if (!Array.isArray(deps)) {
    deps = Array.prototype.slice.call(arguments, 0);
  }
  return new WinJS.Promise(function(c, e, p) {
    return require(deps, function() {
      return c.call(this, Array.prototype.slice.call(arguments, 0));
    }, e);
  });
};

usage.js

// Call it like this
requireAsync("module").then(function(imports){
  var module = imports[0];
});

requireAsync("module1,module2").then(function(imports){
  var module1 = imports[0],
      module2 = imports[1];
});

requireAsync("module1", "module2").then(function(imports){
  var module1 = imports[0],
      module2 = imports[1];
});


requireAsync(["module1","module2"]).then(function(imports){
  var module1 = imports[0],
      module2 = imports[1];
});