WebSocket Server

wss.ts

import WebSocket, { Server } from 'ws';

const wss = new Server({ port: 28080 });

let uniqueID = 0;
let clients: WebSocket[] = [];

wss.on('connection', function connection(ws) {
  const clientId = uniqueID++;
  clients.push(ws);

  console.log('connected');

  ws.on('message', function incoming(message) {
    clients
      .filter(x => x !== ws)
      .forEach(x => {
        const data = JSON.parse(message.toString());

        x.send(JSON.stringify({
          type: 'updatePos',
          playerId: clientId,
          ...data
        }) + '\n');
      })
  });

  ws.on('close', function onClose() {
    clients
      .filter(x => x !== ws)
      .forEach(x => {
        const data = {
          type: 'removeId',
          playerId: clientId
        };
        x.send(JSON.stringify(data) + '\n');
      });
    delete clients[clients.findIndex(x => x === ws)];
  })
});