energy

#### simple cross-platform event emitter based on EventEmitter

API

#### Create an emitter instance

``js
var energy = require('energy')
var emitter = energy()
`

Or use new if you prefer. Either way works :)

`js
var energy = require('energy')
var emitter = new energy()
`

#### Methods
- emitter.on(event, listener)
- emitter.off(event?, listener?, quota?)
- emitter.emit(event, ...args)
- emitter.once(event, listener)
- emitter.clone()
- emitter.listeners(event)
- emitter.init()
- emitter.to(target)
- energy.to(target)
- energy.applies(fns, scope, args, breaker?)

#### Parameters

- emitter refers to an energy() object
- event refers to an event name
- listener refers to a function that listens to an event


#### emitter.on(event, listener)
- Add listener for event
- @return emitter


#### emitter.off(event?, listener?, quota?)
- Remove listener(s)
- .off() removes all listeners for all events
- .off(event) removes all event listeners
- .off(event, listener) removes all occurrences of event listener
- .off(event, listener, quota) remove quota occurrences of event listener
- @return emitter


#### emitter.emit(event, ...args)
- Fire event listeners (in sequence) with the supplied arguments
- Listeners run in the context of emitter
- @return integer (number of listeners that fired)


#### emitter.once(event, listener)
- Add a one-time event listener
- @return emitter


#### emitter.clone()
- Clone an emitter at its current state
- @return a new emitter


#### emitter.listeners(event)
- Access the listeners array for the specified event
- @return array (reference)


#### emitter.init()
- Reinitialize an emitter
- @return emitter


#### emitter.to(target)
- Make target emitter-like based on emitter as the source.
- @return emitter


#### energy.to(target)
- Make target emitter-like based on a energy() object as the source
- @return target with emitter methods and properties


#### energy.applies(fns, scope, args, breaker?)`
- Apply each function with scope and args
- If breaker is defined, then functions can return breaker to abort subsequent applies
- @return integer (number of functions that fired)

Compatibility

Works in node and in any browser. Tested in node, Chrome, FF, Opera, IE8