The safe way to handle the connect socket event

Once you receive the socket, it may be already connected (or disconnected).
To avoid checking that, use defer-to-connect. It'll do that for you.

const deferToConnect = require('defer-to-connect');

deferToConnect(socket, () => {
    console.log('Connected!');
});

Calls connectListener() when connected.

An object representing connect, secureConnect and close properties.

Calls connect() when the socket is connected.
Calls secureConnect() when the socket is securely connected.
Calls close() when the socket is destroyed.

MIT