pumpify

Combine an array of streams into a single duplex stream using pump and duplexify. If one of the streams closes/errors all streams in the pipeline will be destroyed.

npm install pumpify

# Usage

Pass the streams you want to pipe together to pumpify `pipeline = pumpify(s1, s2, s3, ...)`. `pipeline` is a duplex stream that writes to the first streams and reads from the last one. Streams are piped together using pump so if one of them closes all streams will be destroyed.

var pumpify = require('pumpify')
var tar = require('tar-fs')
var zlib = require('zlib')
var fs = require('fs')
var untar = pumpify(zlib.createGunzip(), tar.extract('output-folder'))
// you can also pass an array instead
// var untar = pumpify([zlib.createGunzip(), tar.extract('output-folder')])
fs.createReadStream('some-gzipped-tarball.tgz').pipe(untar)

If you are pumping object streams together use `pipeline = pumpify.obj(s1, s2, ...)`. Call `pipeline.destroy()` to destroy the pipeline (including the streams passed to pumpify).

## Using <tt>setPipeline(s1, s2, ...)</tt>

Similar to duplexify you can also define the pipeline asynchronously using `setPipeline(s1, s2, ...)`

var untar = pumpify()
setTimeout(function() {
// will start draining the input now
untar.setPipeline(zlib.createGunzip(), tar.extract('output-folder'))
}, 1000)
fs.createReadStream('some-gzipped-tarball.tgz').pipe(untar)

# License

MIT

# Related

`pumpify` is part of the mississippi stream utility collection which includes more useful stream modules similar to this one.