Update firebase.mdx

[royce-mathew]

☕️ Reasoning

When trying to call the auth function anywhere inside middleware.tsx, the following issue is encountered.

Module build failed: UnhandledSchemeError: Reading from "node:stream" is not handled by plugins (Unhandled scheme).
Webpack supports "data:" and "file:" URIs by default.
You may need an additional plugin to handle "node:" URIs.
Import trace for requested module:
node:stream
./node_modules/.pnpm/@fastify+busboy@2.1.1/node_modules/@fastify/busboy/lib/main.js
./node_modules/.pnpm/firebase-admin@12.1.0/node_modules/firebase-admin/lib/utils/api-request.js
./node_modules/.pnpm/firebase-admin@12.1.0/node_modules/firebase-admin/lib/app/credential-internal.js
./node_modules/.pnpm/firebase-admin@12.1.0/node_modules/firebase-admin/lib/utils/index.js
./node_modules/.pnpm/firebase-admin@12.1.0/node_modules/firebase-admin/lib/app/index.js
./node_modules/.pnpm/firebase-admin@12.1.0/node_modules/firebase-admin/lib/esm/app/index.js
./node_modules/.pnpm/@auth+firebase-adapter@2.0.0_firebase-admin@12.1.0/node_modules/@auth/firebase-adapter/index.js
./src/lib/auth.ts

There should be a warning on the adapter's page displaying that it is not compatible with middleware.

🧢 Checklist

• [ x ] Documentation
• [ x ] Tests
• [ x ] Ready to be merged

🎫 Affected issues

#10819

📌 Resources

• Security guidelines
• Contributing guidelines
• Code of conduct
• Contributing to Open Source

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
auth-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 5, 2024 5:10am

1 Ignored Deployment

Name	Status	Preview	Comments	Updated (UTC)
next-auth-docs	⬜️ Ignored (Inspect)	Visit Preview		May 5, 2024 5:10am

[vercel]

@royce-mathew is attempting to deploy a commit to the authjs Team on Vercel.

A member of the Team first needs to authorize it.

[ndom91]

Thanks for your interest, but I think we're not going to accept this change, it would set a bad precedent for us documenting all sorts of things for the database and hosting provider itself.

Folks should know whether their database is edge-comaptible or not when using one of those deployment platforms (Vercel, Cloudflare, etc.). We can't be the documentation for the adapter and the hosting provider as well.