I am trying to make a socket connection in NodeJS App. I tried to run this code

index.js

const io = require('socket.io')(8000)

const users = {};

io.on('connection', socket =>{

    socket.on('new-user-joined', name =>{ 

        users[socket.id] = name;

        socket.broadcast.emit('user-joined', name);
    });

    
    socket.on('send', message =>{
        socket.broadcast.emit('receive', {message: message, name: users[socket.id]})
    });

 
    socket.on('disconnect', message =>{
        socket.broadcast.emit('left', users[socket.id]);
        delete users[socket.id];
    });
});

client.js

const user = prompt("Enter your name to join");
socket.emit('new-user-joined', user)

socket.on('user-joined', user =>{
    append(`${user} joined the chat`, 'right')
})

socket.on('receive', data =>{
    append(`${data.name}: ${data.message}`, 'left')
})

socket.on('left', user =>{
    append(`${user} left the chat`, 'right')
})

But I am not getting correct results and any errors in console.