Mentions

To implement the second point, we need to revisit our Bot class and add mention functionality. In the Bot class' constructor, replace the RTM_CONNECTION_OPENED event listener block with the following:

this.slack.on(CLIENT_EVENTS.RTM.RTM_CONNECTION_OPENED, () => {
  let user = this.slack.dataStore.getUserById(this.slack.activeUserId)
  let team = this.slack.dataStore.getTeamById(this.slack.activeTeamId);

  this.name = user.name;
  this.id = user.id;

  console.log(`Connected to ${team.name} as ${user.name}`);
});

The only change here is the addition of the bot's id to the this object. This will help us later. Now, replace the respondTo function with this:

respondTo(opts, callback, start) {
  if (!this.id) {
    // if this.id doesn't exist, wait for slack to connect
    // before continuing
    this.slack.on(CLIENT_EVENTS.RTM.RTM_CONNECTION_OPENED, () => {
      createRegex(this.id, this.keywords);
    });  
  } else {
    createRegex(this.id, this.keywords);
  }
      
  function...