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

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