lib/ext_json.js
function serialize(bson, options) {
  options = options || {};
  return JSON.parse(stringify(bson, options));
}
function serialize(bson, options) {
  options = options || {};
  return JSON.parse(stringify(bson, options));
}
Serializes an object to an Extended JSON string, and reparse it as a JavaScript object.

@param {object} bson The object to serialize
@param {object} [options] Optional settings passed to the `stringify` function
@return {object}