socialanimal is a framework for abstracting simple social relationship queries across various providers (Twitter, Facebook, etc) on node.js
var socialanimal = require('socialanimal') ,
TwitterProvider = require('socialanimal-twitter').Provider;
var social = socialanimal.use(new TwitterProvider({
user_id: 619833
}));
social.followers(function(error, followers) {
console.log("user's followers:");
console.log(util.inspect(followers));
});