Кофе!!!

apply: (context, options, values) ->
  for name, val of values
    if options isnt undefined && options[name]?
      context[name] = options[name]
    else
      context[name] = val

Что ты делаешь?!!!

apply: (context, options, values) ->
  for name, val of values
    context[name] = if options isnt undefined && options[name]?
      options[name]
    else
      val

Ахаха!!!!

apply: (context, options, values) ->
  for name, val of values
    context[name] = if options isnt undefined && options[name]? then options[name] else val

Прекрати!!!!
apply: (context, options, values) -> context[name] = if options isnt undefined && options[name]? then options[name] else val for name, val of values