ReactionHandler

// Handle specific emoji
chat.onReaction(["thumbs_up", "heart"], async (event) => {
  console.log(`${event.user.userName} ${event.added ? "added" : "removed"} ${event.emoji}`);
});

// Handle all reactions
chat.onReaction(async (event) => {
  // ...
});

type ReactionHandler = (event: ReactionEvent) => void | Promise<void>