stats.js | JavaScript Performance Monitor

const Discord = require('discord.js');

const Random = require('random');

const fs = require('fs');

const randomPuppy = require('random-puppy');

const client = new Discord.Client();

const bot = new Discord.Client();

client.commands = new Discord.Collection();

const got = require('got');

const jsonfile = require('jsonfile');

var stats = {};
if (fs.existsSync('stats.json')) {
    stats = jsonfile.readFileSync('stats.json');
}

bot.on('message', (message) => {
    if (message.author.bot)
    return;


    if (message.guild.id in stats === false) {
        stats[message.guild.id] = {};
    }

    const guildStats = stats[message.guild.id];
    if (message.author.id in guildStats === false) {
        guildStats[message.author.id] = {
            xp: 0,
            level: 0,
            last_message: 0
        };
    }

    const userStats = guildStats[message.author.id];
    if (Date.now() - userStats.last_message > 60000) {
        userStats.xp += Random.int(15, 25);
        userStats.last_message = Date.now();

        const xpToNextLevel = 5 * Math.pow(userStats.level, 2) + 50 * userStats.level + 100;
        if (userStats.xp >= xpToNextLevel) {
            userStats.level++;
            userStats.xp = userStats.xp - xpToNextLevel;
            message.channel.send(message.author.username + ' has reached level ' + userStats.level);
        }

        jsonfile.writeFileSync('stats.json', stats);

        console.log(message.author.username + ' now has ' + userStats.xp);
        console.log(xpToNextLevel + ' XP needed for next level.');
    }

    const parts = message.content.split(' ');

    if(parts[0] === '-hello') {
        message.channel.send('hi');
    } else if (parts[0] === '-level') {
        if(message.mentions.users.size){
            let member=message.mentions.users.first()
        if(member){
            let embed = new Discord.MessageEmbed()
            .setColor("RANDOM")
            .setAuthor(member.tag + "'s" + ' level:', member.displayAvatarURL({dynamic: true}))
            .setTitle('Level: ' + userStats.level)
             message.channel.send(embed)
            
        }
        else{
            message.channel.send("Sorry noone found with that name")

        }
        }else{
            let embed = new Discord.MessageEmbed()
            .setColor("#985ce7")
            .setAuthor(message.author.tag + "'s" + ' level:', message.author.displayAvatarURL({dynamic: true}))
            .setTitle('Level: ' + userStats.level)
            message.channel.send(embed)
        }