Skip to content
Create a gist now

Instantly share code, notes, and snippets.

Embed URL


Subversion checkout URL

You can clone with
Download ZIP
Tiny browser/node EventEmitter implementation in coffeescript
class EventEmitter
constructor: ->
@events = {}
emit: (event, args...) ->
return false unless @events[event]
listener args... for listener in @events[event]
return true
addListener: (event, listener) ->
@emit 'newListener', event, listener
(@events[event]?=[]).push listener
return @
on: @::addListener
once: (event, listener) ->
fn = =>
@removeListener event, fn
listener arguments...
@on event, fn
return @
removeListener: (event, listener) ->
return @ unless @events[event]
@events[event] = (l for l in @events[event] when l isnt listener)
return @
removeAllListeners: (event) ->
delete @events[event]
return @

@contra would this be MIT licensed?


It is

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Something went wrong with that request. Please try again.