Superagent request with kefir

kefir-superagent.js

let requestStream = Kefir.emitter();
let responseStream = requestStream.map(url => {
    return Kefir.fromCallback(cb=> request.get(url).end(cb));
}).flatMap();

responseStream.onValue(v=>{
    console.log("kefir log",v);
});
requestStream.emit("data.json");