const io = require('socket.io-client');

var socket = io("socket.donationalerts.ru:3001");
socket.emit('add-user', {token: "n4W7aRMDJSfJexmLvNzn", type: "minor"});
console.log(socket.id); //undefined
socket.on('donation', () => {
    console.log(socket.id);
})