index.js

const Discord = require('discord.js');
const { MessageEmbed } = require('discord.js');
const config = require("./config/config.json");
const Enmap = require('enmap');

const client = new Discord.Client({
 intents:[
    Discord.Intents.FLAGS.GUILDS,
    Discord.Intents.FLAGS.GUILD_MEMBERS,
    Discord.Intents.FLAGS.GUILD_MESSAGES,
 ]
})


client.login(config.token)
client.on("ready", () => {
  console.log(`Conectado como ${client.user.tag}`)  
});

client.setups = new Enmap({
    name: "setups", 
    dataDir: "./database"
})

client.on("messageCreate", async (message) => {
    if(message.author.bot || !message.guild || !message.channel) return;
    client.setups.ensure(message.guild.id, {
        welcomechannel: "",
        welcomemessage: "",
    });
    const args = message.content.slice(config.prefix.length).trim().split(" ")
    const command = args.shift()?.toLowerCase();
    

    if(command == "ping"){
        return message.reply(`El ping es de \`${client.ws.ping}ms\``)
    }
    if(command == "setup-welcome"){
        const channel = message.guild.channels.cache.get(args[0]) || message.mentions.channels.first();
        if(!channel) return message.reply(`El canal que mencionaste no existe\n**USO:** \`${config.prefix}setup-welcome <#canal o id> <Bienvenida>\``)
        if(!args.slice(1).join(" ")) return message.reply(`No especificaste el mensaje de bienvenidan**USO:** \`${config.prefix}setup-welcome <#canal o id> <Bienvenida>\``);
        let obj = {
            welcomechannel: channel.id,
            welcomemessage: args.slice(1).join(" ")

        }
        client.setups.set(message.guild.id, obj)
        return message.reply(`Canal de bienvenidas configurado exitosamente\n**Canal:** ${channel}\n**Mensaje de bienvenida:** ${args.slice(1).join(" ")}`)
    
    }
})

client.on("guildMemberAdd", async (member) =>{
    client.setups.ensure(member.guild.id, {
        welcomechannel: "",
        welcomemessage: "",
        
    });

    try {
        const data = client.setups.get(member.guild.id);
        if(data) {
            if(member.guild.channels.cache.get(data.welcomechannel)){
                const channel = member.guild.channels.cache.get(data.welcomechannel)
                const attachment = new Discord.MessageAttachment(`https://i.imgur.com/uE1rYnF.gif`)
                channel.send({content: data.welcomemessage.replace(/{usuario}/, member), files: [attachment]})
                
            }
        }
    } catch(e){console.log(e)}
})