Coffee Script debug functions

debug.coffee

augment: (withFn) ->
  for name of @
    fn = @[name]
    if typeof fn is 'function'
      @[name] = ((name, fn) ->
        console.log "augmenting " + name
        args = arguments
        ->
          withFn.apply @, args
          return fn.apply @, arguments
      )(name, fn)

stackTrace: ->
  e = new Error('err');
  stack = e.stack.replace(/^[^\(]+?[\n$]/gm, '')
    .replace(/^\s+at\s+/gm, '')
    .replace(/^Object.<anonymous>\s*\(/gm, '{anonymous}()@')
    .split('\n')
  console.log stack

debug: ->
  @augment (name, fn) ->
    console.log "calling " + name
    @stackTrace() if name is 'clear'