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73 lines
1.3 KiB
73 lines
1.3 KiB
4 years ago
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# propagate
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[![npm](https://img.shields.io/npm/v/nock.svg?style=flat-square)][npmjs]
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[![Build Status](https://img.shields.io/travis/nock/propagate/master.svg?style=flat-square)][build]
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[![Coverage](https://img.shields.io/coveralls/github/nock/propagate.svg?style=flat-square)][coverage]
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[npmjs]: https://www.npmjs.com/package/propagate
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[build]: https://travis-ci.org/nock/propagate
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[coverage]: https://coveralls.io/github/nock/propagate
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Propagate events from one event emitter into another.
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## Install
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```bash
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$ npm install propagate
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```
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## Propagate
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```javascript
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var ee1 = new EventEmitter()
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var ee2 = new EventEmitter()
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propagate(ee1, ee2)
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ee2.on('event', function(a, b) {
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console.log('got propagated event', a, b)
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})
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ee1.emit('event', 'a', 'b')
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```
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## Unpropagate
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You can unpropagate by ending the propagation like this:
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```javascript
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var ee1 = new EventEmitter()
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var ee2 = new EventEmitter()
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var p = propagate(ee1, ee2)
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// ...
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p.end()
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```
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## Only propagate certain events:
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```javascript
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var ee1 = new EventEmitter()
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var ee2 = new EventEmitter()
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var p = propagate(['event1', 'event2'], ee1, ee2)
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```
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## Propagate certain events as other events:
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```javascript
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var ee1 = new EventEmitter()
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var ee2 = new EventEmitter()
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var p = propagate(
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{
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event1: 'other-event1',
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event2: 'other-event2',
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},
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ee1,
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ee2
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)
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```
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# License
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MIT
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