Is there any plan to support Server-Side Authentication with Custom Token?

[enk0de]

I am using Okta for OAuth SSO, and i use Firestore for a backend database in Next.js Environment.

to configure this environment, i need to use custom token auth for firebase.

but client-side sign in is essential for custom token approach, so i can't use Server Side feature(in future, can't use React Server Component too)

is there any plan to support Server-Side Authentication with Custom Token?