countdown.js

// @ts-check

module.exports.run = async (client, message, args) => {

    const devs = ["437999876828037158"];
    if (!~devs.indexOf(message.author.id)) {
        return;
    }

    let number;
    number = args[0]
    message.reply(`countdown from: ${args[0]} with speed: ${args[1]}s`)

    let loop = setInterval(function () {
        number = number - 1
        message.channel.send(number)
        if (number == 0) {
            clearInterval(loop);
            message.reply("done!")
        }
    }, args[1] * 1000)

}

module.exports.help = {
    name: "countdown",
    permlvl: 5,
    description: "Counts Down",
    hidden: false,
    aliases: [],
    usage: "countdown [count from] [speed]",
    category: "dev"
}