input.styx

(def x ())
(let (y x) (.log @console y))
(def f (fn () (.log $console (.random $Math))))
(f)

output.js

(function () {
    global.styx.gl.x1 = (new styx.rt.Nil());
    (function (x2) {
        return ((function () {
            return arguments[0]["log"].apply(arguments[0], [].slice.call(arguments, 1));
        }))((this["console"]), (x2));
    })(global.styx.gl.x1);
    global.styx.gl.x3 = ((function () {
        return ((function () {
            return arguments[0]["log"].apply(arguments[0], [].slice.call(arguments, 1));
        }))((global["console"]), (((function () {
            return arguments[0]["random"].apply(arguments[0], [].slice.call(arguments, 1));
        }))((global["Math"]))));
    }));
    (global.styx.gl.x3)();
})();