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.. | ||
test | ||
.travis.yml | ||
index.js | ||
LICENSE.APACHE2 | ||
LICENSE.MIT | ||
package.json | ||
readme.markdown |
#through
Easy way to create a Stream
that is both readable
and writable
.
- Pass in optional
write
andend
methods. through
takes care of pause/resume logic if you usethis.queue(data)
instead ofthis.emit('data', data)
.- Use
this.pause()
andthis.resume()
to manage flow. - Check
this.paused
to see current flow state. (write
always returns!this.paused
).
This function is the basis for most of the synchronous streams in event-stream.
var through = require('through')
through(function write(data) {
this.queue(data) //data *must* not be null
},
function end () { //optional
this.queue(null)
})
Or, can also be used without buffering on pause, use this.emit('data', data)
,
and this.emit('end')
var through = require('through')
through(function write(data) {
this.emit('data', data)
//this.pause()
},
function end () { //optional
this.emit('end')
})
Extended Options
You will probably not need these 99% of the time.
autoDestroy=false
By default, through
emits close when the writable
and readable side of the stream has ended.
If that is not desired, set autoDestroy=false
.
var through = require('through')
//like this
var ts = through(write, end, {autoDestroy: false})
//or like this
var ts = through(write, end)
ts.autoDestroy = false
License
MIT / Apache2