Question

Is it possible to extend / initialize the require(‘stream’).Stream; object ? I would like to be able to create a stream object that i can push data to and have all the listeners notified when new data arrive.

I tried the following:

var stream = require('stream');
var test = new stream.Stream();
test.write(new Buffer('mads'));

But i get the following error:

TypeError: Object [object Object] has no method 'write'
    at repl:1:6
    at Interface.<anonymous> (repl.js:168:22)
    at Interface.emit (events.js:67:17)
    at Interface._onLine (readline.js:153:10)
    at Interface._line (readline.js:408:8)
    at Interface._ttyWrite (readline.js:585:14)
    at ReadStream.<anonymous> (readline.js:73:12)
    at ReadStream.emit (events.js:88:20)
    at ReadStream._emitKey (tty_posix.js:306:10)
    at ReadStream.onData (tty_posix.js:69:12)
    at ReadStream.emit (events.js:67:17)

Answer 1

You have to create those methods yourself and also set the writable property to true, and don’t forget to emit the events in those methods you override as well so that you can use it as a regular event emitter. Check this question for more information.