Node.js: Extending Array

gistfile1.js

var array = {
    new : function () {
        var arr = [].slice.call(arguments);
        arr.__proto__ = array.proto;
        return arr;    
    },
    
    proto : {
        __proto__ : Array.prototype,
        
        last : function () {
            return this[this.length - 1];    
        },
        
        max : function () {
            return Math.max.apply(null, this);
        },
        
        min : function () {
            return Math.min.apply(null, this);
        }             
    } 
};

module.exports = array;

//Example
var arr = array.new(1, 2, 3, 4);
arr.push(5);
console.log(arr.length); //5
console.log(arr.last()); //5
console.log(arr.min()); //1