Rename key wherever found within an object

recursiveReplaceKey

var recursiveReplaceKey = function(object, oldKey, newKey) {
  for (var key in object) {
    if (object.hasOwnProperty(key)) {
      if ($.isPlainObject(object[key])) {
        // recurse to sub-object
        util.recursiveReplaceKey(object[key], oldKey, newKey);
      }

      if (key === oldKey) {

        object[newKey] = object[oldKey];
        delete object[oldKey];
      }
    }
  }
};

/*
var object = {
    titles: {
      yorkie: {
        1: 'lonely',
        other: 'party'
      }
    }
  };

  objectUtil.recursiveReplaceKey(object, '1', 'singular');

  assert.expect(2);
  assert.equal(object.titles.yorkie.singular, 'lonely');
  assert.equal(object.titles.yorkie['1'], undefined);
*/