Discord bot tut 1 v12

const discord = require("discord.js");
const botConfig = require("./botconfig.json");

const client = new discord.Client();
client.login(botConfig.token);

client.on("ready", async () => {

    console.log(`${client.user.username} is online.`);

    client.user.setActivity("Testing", { type: "PLAYING" });

});


client.on("message", async message => {

    if(message.author.bot) return;

    if(message.channel.type === "dm") return;

    var prefix = botConfig.prefix;

    var messageArray = message.content.split(" ");

    var command = messageArray[0];

    if (command === `${prefix}hallo`) {

        return message.channel.send("Hallo!!");

    }

});