Is it possible to abandon socket.io in favor of ws?

Question

JavaScript

What are the advantages of using socket.io today compared to pure ws?

Answer 1

Before socket.io was a websocket wrapper that added convenience and fallbacks.
And now... nothing has changed.
Nobody forbids you to abandon this library and write on "native" websockets.

Answer 2

The upside is that if the client or someone on the path doesn't support websocket, then socket.io can switch to POST and GET. A pure websocket can't do that. I had this when the nginx proxy was crookedly configured and did not support the websocket.
Minus in size, the client needs to download the socket.io library.