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author | Florian Dold <florian.dold@gmail.com> | 2016-10-10 03:43:44 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2016-10-10 03:43:44 +0200 |
commit | abd94a7f5a50f43c797a11b53549ae48fff667c3 (patch) | |
tree | ab8ed457f65cdd72e13e0571d2975729428f1551 /node_modules/multipipe/Readme.md | |
parent | a0247c6a3fd6a09a41a7e35a3441324c4dcb58be (diff) | |
download | wallet-core-abd94a7f5a50f43c797a11b53549ae48fff667c3.tar.xz |
add node_modules to address #4364
Diffstat (limited to 'node_modules/multipipe/Readme.md')
-rw-r--r-- | node_modules/multipipe/Readme.md | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/node_modules/multipipe/Readme.md b/node_modules/multipipe/Readme.md new file mode 100644 index 000000000..fe8c221a1 --- /dev/null +++ b/node_modules/multipipe/Readme.md @@ -0,0 +1,102 @@ +# multipipe + +A better `Stream#pipe` that creates duplex streams and lets you handle errors in one place. + +[![build status](https://secure.travis-ci.org/segmentio/multipipe.png)](http://travis-ci.org/segmentio/multipipe) + +## Example + +```js +var pipe = require('multipipe'); + +// pipe streams +var stream = pipe(streamA, streamB, streamC); + +// centralized error handling +stream.on('error', fn); + +// creates a new stream +source.pipe(stream).pipe(dest); + +// optional callback on finish or error +pipe(streamA, streamB, streamC, function(err){ + // ... +}); +``` + +## Duplex streams + + Write to the pipe and you'll really write to the first stream, read from the pipe and you'll read from the last stream. + +```js +var stream = pipe(a, b, c); + +source + .pipe(stream) + .pipe(destination); +``` + + In this example the flow of data is: + + * source -> + * a -> + * b -> + * c -> + * destination + +## Error handling + + Each `pipe` forwards the errors the streams it wraps emit, so you have one central place to handle errors: + +```js +var stream = pipe(a, b, c); + +stream.on('error', function(err){ + // called three times +}); + +a.emit('error', new Error); +b.emit('error', new Error); +c.emit('error', new Error); +``` + +## API + +### pipe(stream, ...) + +Pass a variable number of streams and each will be piped to the next one. + +A stream will be returned that wraps passed in streams in a way that errors will be forwarded and you can write to and/or read from it. + +Pass a function as last argument to be called on `error` or `finish` of the last stream. + +## Installation + +```bash +$ npm install multipipe +``` + +## License + +The MIT License (MIT) + +Copyright (c) 2014 Segment.io Inc. <friends@segment.io> +Copyright (c) 2014 Julian Gruber <julian@juliangruber.com> + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. |