#through
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.
varthrough=require('through')through(functionwrite(data){this.queue(data)//data *must* not be null},functionend(){//optionalthis.queue(null)})Or, can also be used without buffering on pause, use this.emit('data', data),
and this.emit('end')
varthrough=require('through')through(functionwrite(data){this.emit('data',data)//this.pause() },functionend(){//optionalthis.emit('end')})You will probably not need these 99% of the time.
By default, through emits close when the writable
and readable side of the stream has ended.
If that is not desired, set autoDestroy=false.
varthrough=require('through')//like thisvarts=through(write,end,{autoDestroy: false})//or like thisvarts=through(write,end)ts.autoDestroy=falseMIT / Apache2

