How to develop angular widget in sitefinity

Hi All,

Do anyone worked on developing angular widget in sitefinity? I have searched a lot and doesn't get a solution.What I have seen was doing angular coding on widget designers in sitefinity. But my question was how can we develop a custom widget purely in angular, assuming I don't have any designer for the widget.If someone gives some sample code or any reference links that will be very helpful.Awaiting your comments.

Regards

Ajai