forwarder/src/forwarder.coffee

Forwarding of messages to different objects (mostly properties of the receiver)

_forward = exports.forward = (obj, message, {to, as, with: wth}) ->
  throw new TypeError("missing keyword arg to:") unless to
  as ?= message
  wth ?= []
  target = obj[to]
  target = target.call obj if typeof target == typeof Function
  if as == '[]'
    obj[message] = (args...) ->
      args = wth.concat args
      target[args]
  else
    obj[message] = (args...) ->
      args = wth.concat args
      target[as].apply( target, args )

class exports.Forwarder
  forward: (message, {to, as, with: wth}) ->
    _forward @, message, {to, as, with: wth}