@getanthill/datastore/scripts/examples/mqtt-subscriber.js

Event-Sourced Datastore

const MQTT = require('async-mqtt');

const client = MQTT.connect('tcp://localhost');

const doStuff = async () => {
  console.log('Starting');
  try {
    client.on('message', function (topic, message) {
      // message is Buffer
      console.log(message.toString());
      // client.end();
    });

    await client.subscribe('$share/test/wow/so/cool', 'It works!');
    // This line doesn't run until the server responds to the publish
    // await client.end();
    // This line doesn't run until the client has disconnected without error
    // console.log('Done');
  } catch (e) {
    // Do something about it!
    console.log(e.stack);
    process.exit();
  }
};

client.on('connect', doStuff);