Did this to find new people on my twitter network to follow I wrote an article about the method.
You'll need consumer key and secret to run the scripts. There are a tutorial to get started.
npm install
npm test
npm run coverage
You need to create a config.js file with the same variables that are on config-sample.js. There you'll need to input your keys.
To get all users that a specific user is following you can run
node get-first-level rafael_sps (replace your twitter username here)
Then
node get-second-level rafael_sps (replace the same twitter username here)