wrappers/tests/testBroker.js

import { readFileSync } from 'fs';
import { MessageBroker } from '../build/esm/index.js';
const credentials = JSON.parse(readFileSync('../brokerCreds.json', { encoding: 'utf-8' }));

const broker = new MessageBroker({
    createLogger: () =>
    {
        return {
            debug:  console.log,
            info:   console.log,
            status: console.log,
            warn:   console.log,
            error:  console.error
        };
    }
}, credentials);

await broker.init();
broker.subscribe('db_cluster_status', (message) =>
{
    if (message instanceof Buffer)
        console.log(message.toString());
    else
        console.log(message);
});