kick.js

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

module.exports = {
    name: 'kick',
    description: "Kicks the specified user from the server.",
    execute(client, message, args){

        if (message.member.hasPermission('KICK_MEMBERS')) {
            let target = message.guild.member(message.mentions.users.first()) || message.guild.members.cache.get(args[0]);

            if (target) {

                let reason = args.slice(1).join(" ");

                if (!reason) {

                    let embed = new Discord.MessageEmbed()
                    .setTitle('Kick Notice')
                    .setDescription(`You have been kicked from **${message.guild.name}** for the reason: \`Not provided\``)
                    .addField('Moderator', `${message.author.tag} - (${message.author.id})`)
                    .setColor('#ff8282')
                    .setTimestamp();

                    target.send(embed).then(() => {
                        target.kick(`Reason: None.`);
                    }).catch(err => console.log(err));
                    message.channel.send(`${target.user.username} has been kicked.`);

                };

                let embed = new Discord.MessageEmbed()
                .setTitle('Kick Notice')
                .setDescription(`You have been kicked from **${message.guild.name}** for the reason: \`${reason}\`\n\n`)
                .addField('Moderator', `${message.author.tag} - (${message.author.id})`)
                .setColor('#ff8282')
                .setTimestamp();

                target.send(embed).then(() => {
                    target.kick(`Reason: ${reason}`);
                }).catch(err => console.error(err));
                message.channel.send(`${target.user.username} has been kicked.`);

            } else {
                message.channel.send(`Please specify a valid user to kick, ${message.author}.`)
            }
        } else {
            message.channel.send(`You do not have the permissions required to kick users, ${message.author}.`);
        };
    }
}