@slack/client/examples/example-rtm-client.js

A library for creating a Slack client

/**
 * Example for creating and working with the Slack RTM API.
 */

/* eslint no-console:0 */

var RtmClient = require('@slack/client').RtmClient;
var RTM_EVENTS = require('@slack/client').RTM_EVENTS;

var token = process.env.SLACK_API_TOKEN || '';

var rtm = new RtmClient(token, { logLevel: 'debug' });
rtm.start();

rtm.on(RTM_EVENTS.MESSAGE, function handleRtmMessage(message) {
  console.log('Message:', message);
});

rtm.on(RTM_EVENTS.REACTION_ADDED, function handleRtmReactionAdded(reaction) {
  console.log('Reaction added:', reaction);
});

rtm.on(RTM_EVENTS.REACTION_REMOVED, function handleRtmReactionRemoved(reaction) {
  console.log('Reaction removed:', reaction);
});