A stream that emits multiple other streams one after another (streams3)
npm install @nearform/multistreamThis fork of multistream includes this patch by @ronag, and no other changes. This exists just to let Clinic.js use that patch. While the PR has not passed review yet, it is unlikely to make things worse in our specific case.
---
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[travis-url]: https://travis-ci.org/feross/multistream
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[npm-url]: https://npmjs.org/package/multistream
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[standard-url]: https://standardjs.com
#### A stream that emits multiple other streams one after another (streams3)
Simple, robust streams3 version of combined-stream. Allows you to combine multiple streams into a single stream. When the first stream ends, the next one starts, and so on, until all streams are consumed.
This module is used by WebTorrent, specifically create-torrent.
``
npm install multistream
Use multistream like this:
`js
var MultiStream = require('multistream')
var fs = require('fs')
var streams = [
fs.createReadStream(__dirname + '/numbers/1.txt'),
fs.createReadStream(__dirname + '/numbers/2.txt'),
fs.createReadStream(__dirname + '/numbers/3.txt')
]
new MultiStream(streams).pipe(process.stdout) // => 123
`
You can also create an object-mode stream with MultiStream.obj(streams).
To lazily create the streams, wrap them in a function:
`js
var streams = [
fs.createReadStream(__dirname + '/numbers/1.txt'),
function () { // will be executed when the stream is active
return fs.createReadStream(__dirname + '/numbers/2.txt')
},
function () { // same
return fs.createReadStream(__dirname + '/numbers/3.txt')
}
]
new MultiStream(streams).pipe(process.stdout) // => 123
`
Alternatively, streams may be created by an asynchronous "factory" function:
`js
var count = 0
function factory (cb) {
if (count > 3) return cb(null, null)
count++
setTimeout(function () {
cb(null, fs.createReadStream(__dirname + '/numbers/' + count + '.txt'))
}, 100)
}
new MultiStream(factory).pipe(process.stdout) // => 123
``
- Feross Aboukhadijeh
- Mathias Buus
- Yuri Astrakhan
MIT. Copyright (c) Feross Aboukhadijeh.