"Using two distinct bots on my channel" https://github.com/Schmoopiie/tmi.js/issues/135

index.js

'use strict';

const _ = require('lodash'), // Just to handle a couple of things more easily
	tmi = require('tmi.js'),
	
	channel = ''; // Your channel

let mainConfig = {
			options: {
					debug: true // Debug to console
				},
			connection: {
					reconnect: true, // Make sure to reconnect on connection error
					secure: true // Secure servers are cooler
				},
			channels: [channel] // Yooouurrr channel
		},
	identities = {
			A: {
					username: '', // botA's username and password
					password: ''
				},
			B: {
					username: '', // botB's username and password
					password: ''
				},
		},
	botAConfig = _.defaults({ identity: identities.A }, mainConfig),
	botBConfig = _.defaults({ identity: identities.B }, mainConfig),
	botA = new tmi.client(botAConfig),
	botB = new tmi.client(botBConfig);

function reply(channel) {
	return message => this.say(channel, message);
}

function handleCommand(chan, user, message) {
	let parameters = message.split(' ').filter(n => n),
		command = parameters.shift().toLowerCase().replace(/^!+/, ''),
		
		replyA = reply.call(botA, chan), // Reply as botA
		replyB = reply.call(botB, chan); // Reply as botB
	
	if(command == 'time') { // botA will respond to this
		let d = new Date();
		replyA(user.displayName + ', the time is ' + [
				(d.getHours()%12 || 12),
				d.getMinutes(),
				d.getSeconds()
			]
			.map(n => n.toString().length == 1 ? '0' + n : n)
			.join(':'));
	}
	else if(command == 'date') { // botB will respond to this
		let d = new Date();
		replyB(user.displayName + ', the date is ' + [
				d.getMonth() + 1,
				d.getDate(),
				d.getFullYear()
			]
			.join('/'));
	}
}

function handleMessage(channel, _user, message, fromSelf) {
	if(fromSelf) { // Don't respond to self
		return false;
	}
	let chan = channel.replace('#', ''), // #channel -> channel
		user = _.mapKeys(_user, _.rearg(_.camelCase, 1)); // user.['user-type'] -> user.userType
	if(message.startsWith('!')) { // Possible commands
		handleCommand(chan, user, message); // Send to command handler
	}
}

botA.on('message', handleMessage); // Only 1 bot needs to listen to the chat

[botA, botB].forEach(n => n.connect()); // Connect multiple bots

package.json

{
  "name": "multiple-bots",
  "version": "0.1.0",
  "description": "Multiple bots in one channel",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [
    "twitch",
    "chat",
    "bot",
	  "multiple"
  ],
  "author": "Jacob \"Alca\" Foster",
  "license": "ISC",
  "dependencies": {
    "lodash": "^4.12.0",
    "tmi.js": "0.0.29"
  }
}