1.22.8-medco

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			# Emitter [![Build Status](https://travis-ci.org/component/emitter.png)](https://travis-ci.org/component/emitter)

			Event emitter component.

			## Installation

			```
			$ component install component/emitter
			```

			## API

			### Emitter(obj)

			The `Emitter` may also be used as a mixin. For example
			a "plain" object may become an emitter, or you may
			extend an existing prototype.

			As an `Emitter` instance:

			```js
			var Emitter = require('emitter');
			var emitter = new Emitter;
			emitter.emit('something');
			```

			As a mixin:

			```js
			var Emitter = require('emitter');
			var user = { name: 'tobi' };
			Emitter(user);

			user.emit('im a user');
			```

			As a prototype mixin:

			```js
			var Emitter = require('emitter');
			Emitter(User.prototype);
			```

			### Emitter#on(event, fn)

			Register an `event` handler `fn`.

			### Emitter#once(event, fn)

			Register a single-shot `event` handler `fn`,
			removed immediately after it is invoked the
			first time.

			### Emitter#off(event, fn)

			* Pass `event` and `fn` to remove a listener.
			* Pass `event` to remove all listeners on that event.
			* Pass nothing to remove all listeners on all events.

			### Emitter#emit(event, ...)

			Emit an `event` with variable option args.

			### Emitter#listeners(event)

			Return an array of callbacks, or an empty array.

			### Emitter#hasListeners(event)

			Check if this emitter has `event` handlers.

			## License

			MIT