import { io } from 'socket.io-client'; const main = async () => { const socket = io('http://localhost:3000'); socket.on('connect', () => { socket.emit('subscribe', 'SOL-PERP'); }); socket.on('SOL-PERP', (data: any) => { console.log(data); }); }; main().then(() => { console.log('running'); });