In Node.js, how can I make a parent object emit all of a child object's events?

Question

In Node.js, how can I make a parent object emit all of a child object's events?

Let's say I have an object like so (using coffeescript):

class Client
  constructor: (socket) ->
    @id     = socket.id
    @socket = socket
    # some other initialization here...

Now, any time @socket emits something, I want the client object to mimic it by emitting the same event. I can't think of a better way to do this than to just watch for every single event being emitted by @socket and emitting it manually within the Client class, i.e.:

class Client
  constructor: (socket) ->
    # ...
    @socket.on('disconnection', onDisconnect)
    @socket.on('message', onMessage)

  onDisconnect: ->
    this.emit('disconnection')

  onMessage: (data) ->
    this.emit('message', data)

I know there has to be a better way, but I'm not sure how to go about it.

node.js
events
coffeescript
socket.io
eventemitter

Answer 1

Something like this? (Untested.)

class Client

  constructor: (socket) ->
    # ...
    for event in ['disconnect', 'message']
      @socket.on(event, => @emit(event, arguments))

Answer 2

Monkey-patch @socket object emit:

class Client
  constructor: (socket) ->
    @reEmit(socket)

  reEmit: (ee)->
    oldEmit = ee.emit
    ee.emit = (args...)=>
      @emit(args)       
      oldEmit.apply(ee, args)