[](https://www.npmjs.org/package/stream-connect)
[](https://www.npmjs.org/package/stream-connect)
[](https://travis-ci.org/75lb/stream-connect)
[](https://coveralls.io/github/75lb/stream-connect?branch=master)
[](https://david-dm.org/75lb/stream-connect)
[](https://github.com/feross/standard)
# stream-connect
Similar to `.pipe` except `.pipe` returns the last stream in a pipeline. stream-connect returns a stream which writes to the first stream in the pipeline and reads from the last.
## Synopsis
```js
const connect = require('stream-connect')
const fs = require('fs')
const connected = connect(stream1, stream2, stream3, stream4)
// data piped into the connected stream is transparently passed through all four internal streams
// then output into process.stdout. Errors in any of the internal streams are emitted
// by the connected stream.
process.stdin
.pipe(connected)
.on('error', console.error)
.pipe(process.stdout)
```
## More detail
Consider this `.pipe` example.
```js
function getExampleStream () {
...
return streamOne.pipe(streamTwo)
}
const stream = getExampleStream()
stream.on('data', function (chunk) {}) // catches data from streamOne via streamTwo
stream.on('error', function (err) {}) // catches errors only from streamTwo
stream.end('test') // is written to streamTwo
```
If you write to the output it will be written to `streamTwo`, whereas you probably wanted to write to the start of the pipeline and read from the end. Fixed by stream-connect:
```js
const connect = require('stream-connect')
function getExampleStream () {
...
return connect(streamOne, streamTwo)
}
const stream = getExampleStream()
stream.on('data', function (chunk) {}) // catches data from streamOne via streamTwo
stream.on('error', function (err) {}) // catches errors from both streamOne and streamTwo
stream.end('test') // is written to streamOne
```
Any errors emitted in `streamOne` or `streamTwo` are propagated to the output stream.
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© 2015 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).
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