What problem does this feature solve?

Handle cookie jar in order to automatically resend received cookies on every subsequent request (server-side).
Actually, axios doesn't resend cookie received (with set-cookie) by nuxt serverResponse (in a serverMiddleware for example).
It cause many problem in my nuxt app.

I have to do something like this (temporary fix) :

$axios.onResponse((resp) => {
        if(resp.headers['set-cookie'] && process.server){
            try{
                // add header to nuxt's server response
                res.setHeader('Set-Cookie', [ ...resp.headers['set-cookie'] ])
            }catch(e) {}
        }
        return resp
    })

but in some case, set-cookie header is duplicated...