Circular reference JSON.stringify wrapper

Circular reference JSON.stringify wrapper

var repeatingArray = [4, 5, 6];
var circularObj = {
    a: 1,
    b: 1,
    c: "an allowed repeating string",
    d: "an allowed repeating string",
    e: repeatingArray,
    f: repeatingArray,
    g: [
        repeatingArray,
        repeatingArray
    ]
};
circularObj.h = circularObj;

var myObj = {
    co: circularObj
};

function stringifyOnce(obj, replacer, indent){
    var printedObjects = [];
    var printedObjectKeys = [];

    function printOnceReplacer(key, value){
        var printedObjIndex = false;
        printedObjects.forEach(function(obj, index){
            if(obj===value){
                printedObjIndex = index;
            }
        });

        if(printedObjIndex && typeof(value)=="object"){
            return "(see " + value.constructor.name.toLowerCase() + " with key " + printedObjectKeys[printedObjIndex] + ")";
        }else{
            var qualifiedKey = key || "(empty key)";
            printedObjects.push(value);
            printedObjectKeys.push(qualifiedKey);
            if(replacer){
                return replacer(key, value);
            }else{
                return value;
            }
        }
    }
    return JSON.stringify(obj, printOnceReplacer, indent);
}

console.log(stringifyOnce(myObj, undefined, 4));