Gigya client-side javascript is designed to work as much as possible in the browser, as they authenticate in 2 parts using cookies set by their domains. You can try to port it to run on the server side, but none of the public methods will work as advertised.
I wrote a wrapper for my REST API using their proprietary authentication, which I used in a working project for several weeks: https://github.com/jproulx/Gigya-Node-SDK - note that not everything has been fully verified, since I only needed to use a subset of server-side socialize services. This should serve as a good starting point for downloading something for your needs.
source share