How to wait for a subscription to a websocket event?

Question

Socket.io

There is a constructor

const socket = io();
socket.on('some event', cb);
getDataToSomeEvent();

What happens is that getDataToSomeEvent makes a request to the server, some events occur there, and then emit('some event'..., but some of the data comes before the subscription is made socket.on('some event', cb )

How can one achieve serial execution of the getDataToSomeEvent request, after 100% sure subscription to the "some event" event?

Answer 1

No way. This is an event model of interaction. It has no concept of order.