ljharb@ljharb/through 
Note: This package is a fork of https://npmjs.com/through, and builds off of it.
Easy way to create a Stream that is both readable and writable.
- Pass in optional
writeandendmethods. throughtakes 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.pausedto see current flow state. (writealways returns!this.paused).
This function is the basis for most of the synchronous streams in event-stream.
var through = require('@ljharb/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('@ljharb/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('@ljharb/through')
//like this
var ts = through(write, end, {autoDestroy: false})
//or like this
var ts = through(write, end)
ts.autoDestroy = false