Raven-Node setUserContext

Hi Sentry Forum:

I am in a project using raven-node. I see in their issue #134 resolved setUserContext for node.js but raven cannot find that function.

import Raven from 'raven';
(user) => {

and in my console display me this message:
TypeError: _raven2.default.setUserContext is not a function

Someone have an idea why occurs? or I call a missing function.

raven-node: ^2.4.2