Next.js API Route Middleware

next-api-route-middleware provides a concise and type-safe way to implement middleware patterns for Next.js API routes. It enables developers to abstract reusable logic that executes before the main API handler, such as authentication, request method validation, error capturing, or augmenting the `req` object with additional data. The package is currently at version 1.0.2, indicating a stable but relatively early stage of development. While there isn't an explicit release cadence stated, its current version suggests a focus on stability for its initial feature set. A key differentiator is its strong TypeScript support, allowing for straightforward extension of NextApiRequest types without casting, and its functional composition approach for applying multiple middleware.