loginWithRedirect Passing Parameters through SSO (auth0-vue)

So I have loginWithRedirect within my App.vue as such:

if(!isAuthenticated) loginWithRedirect({redirect_uri: 'localhost:3030/callback', params: 'test})

The purpose is to eventually have the params info persist past SSO login, but the question is, how do I access params after SSO redirects to /callback as intended?

I’ve seen people say to use context, as well as event, but neither seemed to work?

Callback.vue:

setup(context){
   onMounted(() => console.log(context))
}

Thanks