diff options
| author | ruki <waruqi@gmail.com> | 2018-11-08 00:38:48 +0800 |
|---|---|---|
| committer | ruki <waruqi@gmail.com> | 2018-11-07 21:53:09 +0800 |
| commit | 26105034da4fcce7ac883c899d781f016559310d (patch) | |
| tree | c459a5dc4e3aa0972d9919033ece511ce76dd129 /node_modules/through/readme.markdown | |
| parent | 2c77f00f1a7ecb6c8192f9c16d3b2001b254a107 (diff) | |
| download | xmake-docs-26105034da4fcce7ac883c899d781f016559310d.tar.gz xmake-docs-26105034da4fcce7ac883c899d781f016559310d.zip | |
switch to vuepress
Diffstat (limited to 'node_modules/through/readme.markdown')
| -rw-r--r-- | node_modules/through/readme.markdown | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/node_modules/through/readme.markdown b/node_modules/through/readme.markdown new file mode 100644 index 00000000..cb34c813 --- /dev/null +++ b/node_modules/through/readme.markdown @@ -0,0 +1,64 @@ +#through + +[](http://travis-ci.org/dominictarr/through) +[](https://ci.testling.com/dominictarr/through) + +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](http://github.com/dominictarr/event-stream). + +``` js +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') + +``` js +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`. + +``` js +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 |
