Log a Javascript object preventing circular structure error (a minor amendment to http://stackoverflow.com/a/9653082)

log_object

var testObject = {
  id : 5,
  name : 'foo'
}

function censor(censor) {
  return (function() {
    var i = 0;

    return function(key, value) {
      if(i !== 0 && typeof(censor) === 'object' && typeof(value) == 'object' && censor == value) 
        return '[Circular]'; 

      if(i >= 29) // seems to be a harded maximum of 30 serialized objects?
        return '[Unknown]';

      ++i; // so we know we aren't using the original object anymore

      return value;  
    }
  })(censor);
}

console.log(JSON.stringify(testObject, censor(testObject), 4));