const RoundRobinStream = require('round-robin-stream');
 
let stream = new RoundRobinStream();
 
var outlet1 = stream.createReadStream();
var outlet2 = stream.createReadStream();
 
stream.write('a'); // goes to outlet1
stream.write('b'); // goes to outlet2
stream.write('c'); // goes to outlet1
 
outlet2.destroy(); // removes outlet2 from rotation