stream

This is a browser-compatible version of the node.js stream module. Thus, you can use the node docs as the docs for this library: http://nodejs.org/api/stream.html.

This is a quick example of how to make a readable stream of random numbers

var Readable = require('stream/readable');

function createRandomNumberStream (opts) {
    var randomNumberStream = new Readable(opts);
    randomNumberStream._read = function () {
        this.push(Math.random());
    };
    return randomNumberStream;
}

var myRandomNumberStream = createRandomNumberStream();
myRandomNumberStream.on('data', function (randomNumber) {
    console.log(randomNumber);
});

There is one slight addition from what node implements, and that is the Readable.prototype.forEach method, which behaves much like the Observable.prototype.forEach method (docced as subscribe) in RxJS;

// full signature
var subscription = readable.forEach(onData, onError, onEnd);
// Remove relevant listeners
subscription.dispose();

// or, more commonly
readable.forEach(function (thing) {
    // do something
    console.log(thing);
});