node-minecraft-protocol/examples/client_channel/client_channel.js

const mc = require('minecraft-protocol');

if(process.argv.length < 4 || process.argv.length > 6) {
  console.log("Usage : node client_channel.js <host> <port> [<name>] [<password>]");
  process.exit(1);
}

const client = mc.createClient({
  version: false,
  host: process.argv[2],
  port: parseInt(process.argv[3]),
  username: process.argv[4] ? process.argv[4] : "test",
  password: process.argv[5]
});

client.registerChannel('MC|Brand',['string',[]]);
client.on('MC|Brand',console.log);

client.on('login', function() {
  client.writeChannel('MC|Brand', "vanilla");
});
client.on('error', console.log);