A hypothetical Number mirror factory that distingishes between number values and number objects

introspectNumber.js

Number.prototype.introspect = function() {
    "use strict";  //.See ES5.1 10.4.3 steps 1-3
    if (typeof this == "object") return Object.prototype.introspect.call(this);//generic object mirror
    return new Float(+this); //Number value mirror
};