Simple twitch chat bot, connected via websockets for the browser, nodejs and deno

twitchbot_ws.ts

/**
 * A quick, simple way to connect to a channel as a twitch chat bot. Works in the browser, deno and nodejs.
 * Note for nodejs, you will need the `ws` package.
 *
 * OAUTH_TOKEN: https://twitchapps.com/tmi/ (omit 'oauth:' from the string)
 * BOT_USERNAME: Name of the bot that will be used to post messages to the main channel
 * CHANNEL_NAME: Name of the target channel for the BOT_USERNAME to join
 */

// For NodeJS only: `npm install ws`
// import WebSocket from "ws";

const OAUTH_TOKEN = "";
const BOT_USERNAME = "";
const CHANNEL_NAME = "";

const twitchWssUrl = "wss://irc-ws.chat.twitch.tv:443";
const chat = new WebSocket(twitchWssUrl);

chat.addEventListener("open", () => {
  // Successful connection to twitch IRC endpoint
  // Connecting to user channel
  chat.send(`PASS oauth:${OAUTH_TOKEN}`);
  chat.send(`NICK ${BOT_USERNAME}`);
  chat.send(`JOIN #${CHANNEL_NAME}`);
  
  console.log(`Successful connection to: ${CHANNEL_NAME}`);
});

chat.addEventListener("message", (e: MessageEvent<string>) => {
  if (e.data.includes("PRIVMSG")) {
    console.log(e.data);
  } else if (e.data.includes("PING")) {
    console.log("PONG");
    chat.send("PONG :tmi.twitch.tv")
  }
});

chat.addEventListener("error", (e) => {
  console.log("Connect error:", JSON.stringify(e));
  chat.close();
});

chat.addEventListener("close", () => {
  console.log("Connection Terminated");
});