ghaction-upx/node_modules/through
2020-04-08 00:26:27 +02:00
..
test Update node_modules 2020-01-17 09:39:25 +01:00
.travis.yml Update node_modules 2020-01-17 09:39:25 +01:00
index.js Update node_modules 2020-01-17 09:39:25 +01:00
LICENSE.APACHE2 Update node_modules 2020-01-17 09:39:25 +01:00
LICENSE.MIT Update node_modules 2020-01-17 09:39:25 +01:00
package.json Remove absolute paths 2020-04-08 00:26:27 +02:00
readme.markdown Update node_modules 2020-01-17 09:39:25 +01:00

#through

build status testling badge

Easy way to create a Stream that is both readable and writable.

  • Pass in optional write and end methods.
  • through takes care of pause/resume logic if you use this.queue(data) instead of this.emit('data', data).
  • Use this.pause() and this.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