Code

const botconfig = require("./botconfig.json");
const tokenfile = require("./token.json");
const Discord = require("discord.js");
const fs = require("fs");
const bot = new Discord.Client({disableEveryone: true});
bot.commands = new Discord.Collection();

fs.readdir("./commands/",  async (err, files) => {

  if(err) console.log(err);

  let jsfile = files.filter(f => f.split(".").pop() === "js")
  if(jsfile.length <= 0){
    console.log("Couldn't find commands.");
    return;
  }

  jsfile.forEach((f, i) =>{
    let props = require(`./commands/${f}`);
    console.log(`${f} loaded`);
    bot.commands.set(props.help.name, props);
  });

});


bot.on("ready", async () => {
  console.log(`${bot.user.username} is online!`);
  bot.user.setActivity("you", {type: "WATCHING"});

});

bot.on("guildMemberAdd", async member => {
  console.log(`${member.if} joined the server`)

  let welcomechannel = member.guild.channels.find(`name`, "welcome");
  welcomechannel.send(`LOOK OUT EVERYONE ${member} has joined the **dAnk MeME** army`);

});

bot.on("guildMemberRemove", async member => {
  console.log(`${member.id} left the server`)

  let welcomechannel = member.guild.channels.find(`name`, "welcome");
  welcomechannel.send(`**FUCK** <@${member.id}> has left the **dAnk MeME** army`);
});

bot.on("channelCreate", async channel => {
  console.log(`${channel.name} has been created`);

  let sChannel = channel.guild.channels.find(`name`,  "logs");
  let channelEmbed = new Discord.RichEmbed()
  .setDescription("~Channel Created~")
  .setColor("#15f153")
  .addField("Channel", `${channel}`)
  .addField("Created At", channel.createdAt);

  sChannel.send(channelEmbed);

});

bot.on("channelDelete", async channel => {
  console.log(`${channel.name} has been created`);

  let sChannel = channel.guild.channels.find(`name`,  "logs");
  let channelEmbed = new Discord.RichEmbed()
  .setDescription("~Channel Deleted~")
  .setColor("#15f153")
  .addField("Channel", `${channel}`)
  .addField("Deleted By", channel.createdAt);

  sChannel.send(channelEmbed);

});


bot.on("message", async message => {
  if(message.author.bot) return;
  if(message.channel.type === "dm") return;

  let prefix = botconfig.prefix;
  let messageArray = message.content.split(" ");
  let cmd = messageArray[0];
  let args = messageArray.slice(1);

  let commandfile = bot.commands.get(cmd.slice(prefix.length));
  if(commandfile) commandfile.run(bot,message,args);

  });

  let prefixes = JSON.parse(fs.readFileSync("./prefixes.json", "utf8"));

  if(!prefixes[message.guild.id]){
    prefixes[message.guild.id] = {
      prefixes: botconfig.prefix
    };
  }

  let prefix = prefixes[message.guild.id].prefixes;


bot.login(tokenfile.token);