A running logger for node.js. This logger will record events

logger-example.coffee

logger = require 'logger'

log = logger.create()
log('START :: Starting a fun job!')
log('Some event happened and I have attached data.', data)
logs = log('END :: A fun job is over!')
console.log(logs)

#
# output
#
output = 
  start: date
  end: date
  duration: 'human readable string'
  events: [
    {msg: 'the message you wrote', lapse: 'a human readable string of how much time has elapsed from previous event', data: 'whatever obejct you passed in'}  
  ]

logger.coffee

exports.create = () ->
  log =
    start: new Date
    events: []

  return (msg, data) ->
    event = {}
    event.msg = msg
    event.lapse = formatDuration(new Date - log.start)
    event.data = data if data
    log.events.push(event)
    log.end = new Date
    log.duration = formatDuration(log.end - log.start)
    return log

#
# pass in duration in milliseconds and get back a human readible string
#
formatDuration = (duration) ->
  if duration < 1000
    duration += 'ms'
  else if duration > 1000
    duration /= 1000
    duration += 's'
  return duration