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const io = require('socket.io-client')
const port = process.env.PORT || 5000;
const socket = io('http://localhost:' + port);
socket.on('connect', () => {
console.log(`connect ${socket.id}`);
});
socket.on('disconnect', () => {
console.log(`disconnect ${socket.id}`);
});
socket.on('hello', (a, b, c) => {
console.log(a, b, c);
});