my most recent take on taming EventEmitter

emit-error-catch.ls

events       = require \events
EventEmitter = events.EventEmitter
P            = require \bluebird
fifo         = require \./app/shared/fifo

q     = fifo.make!
ee    = new EventEmitter
chain = P.resolve(true)

set-timeout (-> ee.emit \error, { +aaaa }), 500ms

p = chain.then((r) ->
  console.log { r }
  P.delay 1000ms
).then(->
  console.log "made it"
  process.exit 0
).cancellable!catch(P.CancellationError, (err) ->
  console.log \err, err
)

ee.on \error, (err) ->
  console.warn \cancel
  p.cancel!