Bot Uptime Discord.JS

我正在尝试让我的机器人正常运行。每当我在台式机或Heroku上运行它时,对于所有时间格式,它给我的所有信息都是“ 0”。如果有人知道我该如何修复我的代码,我将不胜感激!也可以通过不和谐的RiiZu#3125与我联系

const Discord = require('discord.js');
const moment = require("moment");
const bot = new Discord.Client();
require("moment-duration-format");
module.exports = {
    name: 'stats',
    description: "Bot Stats",
    execute(message, args){


          const duration = moment.duration(bot.uptime).format(" D [days], H [hrs], m [mins], s [secs]");

          const statEmbed = new Discord.RichEmbed()
          .setTitle("**  = STATISTICS =**")
          .addField("**Mem Usage  ::**", `**${(process.memoryUsage().heapUsed / 1024 / 1024).toFixed(2)} MB**`)
          .addField("**Uptime**", `**${duration}**`);

          message.channel.send(statEmbed)
        }
}