fish_prompt.fish

function __prompt_duration
  if test $CMD_DURATION
    if test $CMD_DURATION -ge 8000
      set_color white
      echo -esn '  ~> duration: '
      set_color yellow
      echo -es $CMD_DURATION ' ms'
      set_color normal
      if hash terminal-notifier ^ /dev/null
        echo -es 'Finished in ' $CMD_DURATION ' ms' | terminal-notifier
      end
    end
  end
end