Csharp Next.js 15 Migration & Tech Auditor

Streamlined Next.js 15 Migration

The transition to Next.js 15 introduces several breaking changes, most notably the shift to **Asynchronous Request Context**. The **DevUtility Hub Migration Auditor** identifies these patterns in your code and provides the correct 2026-standard refactors.

🔠What we Audit

- **Async Headers & Cookies:** Surface non-awaited calls to headers() and cookies() in layouts and pages.

- **Param Destructuring:** Fix sync destructuring of params and searchParams in Route Handlers.

- **React 19 Compatibility:** Identify legacy context providers that should be migrated to the native use() hook.

- **Caching Logic:** Check for deprecated unstable_cache patterns.

⚡ Understanding the Async Request Context Shift

The single biggest change in Next.js 15 is that headers(), cookies(), and dynamic params are now asynchronous. This means you cannot simply destructure them in the component body.

- **Before:** const { id } = params;

- **After:** const { id } = await params;

Our auditor automatically identifies these "sync-access" patterns and provides the await wrapper logic. This is essential for preventing **Hydration Erasure** and ensuring your Route Handlers remain non-blocking.

⚛️ React 19 & The "use()" Hook

With Next.js 15, we fully embrace React 19. Our auditor checks for the usage of the new use() hook, which allows for conditional reading of promises and context. This replaces many instances of useEffect for data fetching, leading to cleaner, more readable codebases.

🛡️ 100% Private Tech Audit

Your source code contains your application's architectural blueprint. Sending your codebase to a "cloud auditor" exposes your business logic. **DevUtility Hub operates on a 100% Client-Side architecture**. Your code is audited in your browser's private V8 environment. We never store, transmit, or log your proprietary logic, providing a secure, air-gapped migration path for enterprise-grade projects.