code: function getComments(comments) {
    if (!comments || !comments.body) return {};
  
    Object.assign(comments, {
      create_time: formatTime(comments.created_at),
      update_time: formatTime(comments.updated_at)
    })
  
    return comments;
  }
docs: 根据需求补充评论内容数据
  @param  {Object} post 评论数据
  @return {Object}      补充之后的文章数据