gistfile1.txt

function debugAccess(obj, prop, debugGet){
 
    var origValue = obj[prop];
    var newKey = "__debug_access_"+prop;
    obj[newKey] = origValue;
    Object.defineProperty(obj, prop, {
        get: function () {
            if (this !== obj && this.hasOwnProperty(newKey)) {
                console.log("Inherited object gets its existing COPY of '", prop, "' in ", newKey);
                return this[newKey];
            }
            if (this === obj) {
                console.log("Getter: '", prop, "' directly from myself:", obj)
            } else {
                console.log("Getter: '", prop, "' inherited from ", obj)
            }
            if ( debugGet ) debugger;
            return this[newKey];
        },
        set: function(val) {
            if (this !== obj ) {
                if (this.hasOwnProperty(newKey)) {
                    console.log("Inherited object updates own copy of '", prop, "' in ", newKey)
                    return this[newKey] = val;
                } else {
                    console.log("Inherited object creates own copy of '", prop, "' in ", newKey)
                }
            } else {
                console.log("Updating my own '", prop, "' in ", newKey );
            }
            console.log("   ->", val, " on ", this )
            debugger;
            return this[newKey] = val;
        }
    });
 
};