text: // Setup basic express server
  const express = require('express');
  const app = express();
  const path = require('path');
  const server = require('http').createServer(app);
  const io = require('socket.io')(server);
  //const port = process.env.PORT || 3000;
  const port = 3030;
  
  server.listen(port, () => {
  	console.log('Server listening at port %d', port);
  });
  
  // Routing
  app.use(express.static(path.join(__dirname, 'chat')));
  
  // Chatroom
  
  let numUsers = 0;
  let usersList = [];
  
  io.on('connection', (socket) => {
  	let addedUser = false;
  
  	// when the client emits 'new message', this listens and executes
  	socket.on('new message', (data) => {
  		// we tell the client to execute 'new message'
  		socket.broadcast.emit('new message', {
  			username: socket.username,
  			message: data
  		});
  	});
  
  	// when the client emits 'add user', this listens and executes
  	socket.on('add user', (username) => {
  		if (addedUser) return;
  
  		// we store the username in the socket session for this client
  		socket.username = username;
  		++numUsers;
  		usersList.push(socket.username);
  		console.log(usersList);
  		addedUser = true;
  		socket.emit('login', {
  			numUsers: numUsers
  		});
  		// echo globally (all clients) that a person has connected
  		socket.broadcast.emit('user joined', {
  			username: socket.username,
  			numUsers: numUsers
  		});
  	});
  
  	// when the client emits 'typing', we broadcast it to others
  	socket.on('typing', () => {
  		socket.broadcast.emit('typing', {
  			username: socket.username
  		});
  	});
  
  	// when the client emits 'stop typing', we broadcast it to others
  	socket.on('stop typing', () => {
  		socket.broadcast.emit('stop typing', {
  			username: socket.username
  		});
  	});
  
  	// when the user disconnects.. perform this
  	socket.on('disconnect', () => {
  		if (addedUser) {
  			--numUsers;
  			const index = usersList.indexOf(socket.username);
  			if (index > -1) {
  				usersList.splice(index, 1);
  			}
  			// echo globally that this client has left
  			socket.broadcast.emit('user left', {
  				username: socket.username,
  				numUsers: numUsers
  			});
  		}
  	});
  });
  	