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invert-stream
Advanced tools
Create a pair of streams (A, B) such that `A.write(X) -> B.emit('data', X)` and `B.write(X) -> A.emit('data', X)`
Create a pair of streams (A, B) such that A.write(X) -> B.emit('data', X)
and B.write(X) -> A.emit('data', X)
var invert = require('invert-stream')
var inverted = invert()
in_steam.pipe(inverted.other).pipe(out_stream)
inverted.write(data_for_outstream)
inverted.on('data', data_from_in_stream)
## why ?
this is useful for a couple of things.
* testing streams based stuff
* making flexible duplex stream apis
an `invert-stream` pair is like a tcp connection,
but in-process and synchronous. It's way easier to test
edge cases related to event order if you stuff works sync.
Also, it's useful making duplex streams, or multiple streams into one.
### Example
```js
var spawn = require('child_process').spawn
var invert = require('invert-stream')
var ch = spawn(cmd, args)
var inverted = invert()
ch.stdout.pipe(inverted.other).pipe(ch.sdin)
//now, we have just ONE stream: inverted
//write to che ch's stdin
inverted.write(data)
//read from ch's stdout
inverted.on('data', ...)
MIT
FAQs
Create a pair of streams (A, B) such that `A.write(X) -> B.emit('data', X)` and `B.write(X) -> A.emit('data', X)`
We found that invert-stream demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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