OOP Programming in Javascript with Node.js

I am actually playing with Javascript doing a small game and I would like to implement what I've found on http://www.crockford.com/javascript/inheritance.html which is something similar to:

ZParenizor.method('toString', function () {
    if (this.getValue()) {
        return this.uber('toString');
    }
    return "-0-";
});

I can't find any reference the the library used to make such development possible. Any ideas? Otherwise, I'm looking for a good library that will aid my OOP developments.

Thank you

Edit:

I am looking for a OOP solution / library for Node.js. Please note that I'm new to Node.js