Use of headers() in next 15 give a error

[ncasola]

Describe the bug

Use of headers() in next 15 give a error:
[ Server ] Error: Route "/private" used headers().get('X-FiefAuth-Access-Token-Info'). headers() should be awaited before using its value. Learn more: https://nextjs.org/docs/messages/sync-dynamic-apis

To Reproduce

Follow the integrate guide in https://docs.fief.dev/integrate/javascript/ssr/nextjs-app/

Configuration

• JavaScript environment: NextJs 15, pnpm, TS

• Fief client version: npm @/fief latest

• Fief Cloud or self-hosted: self-hosted

• If self-hosted, Fief version: ghcr.io/fief-dev/fief:latest

Additional context

[frankie567]

Thank you for the report @ncasola 🙏

This is a breaking change introduced in Next.js 15... It's really hard to keep up with them, this is exhausting.