welcome & invite by

client.on("guildMemberAdd", member => {
    let welcomer = member.guild.channels.find('name', '💬welcome'); // اسم شات ترحيب
    let memberavatar = member.user.avatarURL
      if (!welcomer) return;
      if(welcomer) {
         moment.locale('en-us');
         var h = member.user;
        let heroo = new Discord.RichEmbed()
        .setColor('RANDOM')
        .setThumbnail(h.avatarURL)
        .setAuthor(h.username,h.avatarURL)
        .addField(': تاريخ دخولك الدسكورد',`${moment(member.user.createdAt).format('D/M/YYYY h:mm a')} **\n** \`${moment(member.user.createdAt).fromNow()}\``,true)
         .setFooter(`${h.tag}`,"https://images-ext-2.discordapp.net/external/JpyzxW2wMRG2874gSTdNTpC_q9AHl8x8V4SMmtRtlVk/https/orcid.org/sites/default/files/files/ID_symbol_B-W_128x128.gif")
    .setImage('https://media.giphy.com/media/OkJat1YNdoD3W/giphy.gif')
     welcomer.send({embed:heroo});
      }})

const invites = {};

const wait = require('util').promisify(setTimeout);

client.on('ready', () => {
  wait(1000);

  client.guilds.forEach(g => {
    g.fetchInvites().then(guildInvites => {
      invites[g.id] = guildInvites;
    });
  });
});

client.on('guildMemberAdd', member => {
  member.guild.fetchInvites().then(guildInvites => {
    const ei = invites[member.guild.id];
    invites[member.guild.id] = guildInvites;
    const invite = guildInvites.find(i => ei.get(i.code).uses < i.uses);
    const inviter = client.users.get(invite.inviter.id);
    const logChannel = member.guild.channels.find(channel => channel.name === "💬welcome"); // اسم شات ترحيب
    logChannel.send(`Invited by: <@${inviter.tag}>`);
  });
});