How to compose transform Streams in node.js

Unfortunately, there is no built-in way to do that, but there is cool multipipe package. Use like this:

var multipipe = require('multipipe');

var parser = multipipe(iconv.decodeStream('win1252'), csv.parse(), buildObject());

I've been struggling with this issue (and some others!). I found highlandjs solved nearly all my problems. In this case their pipeline command did the trick:

var h = require('highland');
var parser = h.pipeline(iconv.decodeStream('win1252'), csv.parse(), buildObject());

As of 2022, and nodejs v16, there is a new compose function in the stream module, that build a Duplex stream from a list of streams.

see : https://nodejs.org/api/stream.html#streamcomposestreams

works with .pipe() and async syntax.