var t = function () {
  var x = arguments.length <= 0 ? undefined : arguments[0];
  var y = arguments.length <= 1 ? undefined : arguments[1];
};

function t() {
  var x = arguments.length <= 0 ? undefined : arguments[0];
  var y = arguments.length <= 1 ? undefined : arguments[1];
}

function t() {
  var a = [];
  for (var i = 0; i < arguments.length; i++) {
    a.push(i);
  }
  return a;
}