Simple fixed-point combinator

recurse.js

"use strict";

function fix(f) {
        console.log("fix", f);
        return function () {
                console.log("first call", arguments);
                return f.apply(undefined, [f].concat(Array.prototype.slice.apply(arguments)));
        };
}

var fib = fix(function (rec, n) {
        console.log("impl", n);
        if (n === 0) {
                return 1;
        } else {
                return n * rec(rec, n-1);
        }
});


console.log(fib(10));