		'use strict'

		module.exports = function(event) {
		module.exports = function(emitter, event) {
		if (typeof emitter === 'string') {
		event = emitter
		emitter = this
		}

		return new Promise((resolve, reject) => {
		const done = event === 'error' ? reject : resolve
		this.once(event, done)
		emitter.once(event, done)
		})
		}

package.json

		{
		"name": "await-event",
		"description": "yield an event with generators",
		"version": "2.0.0",
		"version": "2.1.0",
		"author": {
		@@ -6,0 +6,0 @@ "name": "Jonathan Ong",

README.md

		@@ -22,5 +22,28 @@ # Await Event
		var chunk = yield stream.await('data')
		})()
		}).catch(noop)

		stream.write('some chunk')
		```

		You can use awaitEvent without attach on an event emitter:

		```js
		var EventEmitter = require('event')

		var emitter = new EventEmitter()
		co(function*() {
		yield awaitEvent(emitter, 'ready')
		}).catch(noop)
		```

		When use this for `error` event, it will reject once `error` event emitted:

		```js
		var EventEmitter = require('event')

		var emitter = new EventEmitter()
		co(function*() {
		// it will throw when `error` event emitted
		yield awaitEvent(emitter, 'error')
		}).catch(err => console.error(err.stack))
		```

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