Node JS - SyntaxError: Unexpected token - node.js

Question

I'm trying to figure out why I'm getting this unexpected token .
Object.entries(sockets).forEach(([key, cs])) => {
^
SyntaxError: Unexpected token .
at createScript (vm.js:80:10)
at Object.runInThisContext (vm.js:139:10)
at Module._compile (module.js:607:28)
at Object.Module._extensions..js (module.js:654:10)
at Module.load (module.js:556:32)
at tryModuleLoad (module.js:499:12)
at Function.Module._load (module.js:491:3)
at Function.Module.runMain (module.js:684:10)
at startup (bootstrap_node.js:187:16)
at bootstrap_node.js:608:3
Object.entries(sockets).forEach(([key, cs])) => {
process.stdout.write('\u001B[2J\u001B[0;0f'); //again clear node terminal
const server = require('net').createServer(); // here use the createServer method from net module
let counter = 0;
let sockets = {};
server.on('connection', socket => {
socket.id = counter++; //everytime a client connects assign an id, and add to the counter for next socket Id
//sockets[sockets.id] = socket;
console.log('Client is connected!');
socket.write('Hi, your name?\n');
socket.on('data', data => {
if(!socket[socket.id]) {
socket.name = data.toString().trim();
socket.write(`Welcome ... $[socket.name}!\n`);
sockets[socket.id] = socket;
return;
}
Object.entries(sockets).forEach(([key, cs])) => {
if (socket.id == key)
return;
cs.write(`${socket.name}: `);
// console.log('data is', data);
cs.write(data);
});
});
socket.on('end', () => {
delete sockets[socket.id];
console.log('Client is now disconnected');
});
});
This is a simple chat program written in node that allows multiple clients to connect and chat among each other.

Answer 1

You added an extra parenthesis in
Object.entries(sockets).forEach(([key, cs]) =>{}) this line.