@boem312/minecraft-server/src/classes/utils/Client/events/custom_payload.js

A pure JS library to create Minecraft Java 1.16.3 servers

const { parseProtocol } = require('../../../../functions/parseProtocol.js');
const { brand } = require('../properties/public/dynamic/brand.js');

module.exports = {
    custom_payload({ channel, data }) {
        if (channel === 'minecraft:brand') {
            brand.set.call(this, parseProtocol('string', data));
            this.p.stateHandler.updateState.packetReceived.call(this, 'brand');
        }
        // else
        //not implemented
    }
}