stringify.js

function stringify(obj, whitespace, isChild) {
    if (!obj) {
        return 'null';
    }
    
    var output = (obj instanceof Array ? '[' : '{') + '\n';
    for (var i = 0, keyList = Object.keys(obj), l = keyList.length; i < l; i++ ) {
        var key = keyList[i];
        var prop = obj[key];
        var stringifyValue = 'null';

        if (prop != null) {
            switch (typeof prop) {
                case "boolean":
                case "number":
                    stringifyValue = prop;
                    break;
                case "string":
                    stringifyValue = '"'+ prop +'"';
                    break;
                default:
                    if (prop instanceof RegExp ||
                        prop instanceof Number ||
                        prop instanceof Boolean
                    ) {
                        stringifyValue = prop.toString();
                    } else if (prop instanceof String) {;
                        stringifyValue = '"' + prop.toString() + '"';
                    } else if (prop instanceof Function) {
                        stringifyValue = prop.toString().replace(/\r?\n/g, '\n' + whitespace);
                    } else {
                        stringifyValue = stringify(prop, whitespace + whitespace, true);
                    }
                    break;
            }
        }
        output += whitespace + key + ' = ' + stringifyValue + ';\n';
    }

    output += (isChild ? whitespace.slice(0, whitespace.length / 2) : '') + (obj instanceof Array ? ']' : '}');
    return output;
}