Link: https://github.com/getify/You-Dont-Know-JS/blob/master/types%20%26%20grammar/ch3.md#native-prototypes

The code example is as follows:

function isThisCool(vals, fn, rx) {
    vals = vals || Array.prototype;
    fn = fn || Function.prototype;
    rx = rx || RegExp.prototype;

    return rx.test(
        vals.map(fn).join("")
    );
}

isThisCool();		// true

isThisCool(
    ["a", "b", "c"],
    function (v) { return v.toUpperCase(); },
    /D/
);

In node (latest version) and chrome (latest version), I get this error from the above code:

    return rx.test(
              ^

TypeError: Method RegExp.prototype.exec called on incompatible receiver [object Object]
    at Object.exec (<anonymous>)
    at Object.test (<anonymous>)
    at isThisCool (/home/calebjay/Documents/personal/test.js:6:15)
    at Object.<anonymous> (/home/calebjay/Documents/personal/test.js:11:1)
    at Module._compile (module.js:652:30)
    at Object.Module._extensions..js (module.js:663:10)
    at Module.load (module.js:565:32)
    at tryModuleLoad (module.js:505:12)
    at Function.Module._load (module.js:497:3)
    at Function.Module.runMain (module.js:693:10)