Type Alias AppOnError<T>

AppOnError: (
    req: NextRequest,
    ctx: T,
    error: Error,
) => Promise<NextResponse | void> | NextResponse | void

Handler invoked when an error occurs during execution of an App Router endpoint.

Allows custom error handling such as logging, transforming the response, or returning a custom NextResponse

Type Parameters

T = any
The type of the App Router context passed to the handler.

Type Declaration

- (
      req: NextRequest,
      ctx: T,
      error: Error,
  ): Promise<NextResponse | void> | NextResponse | void
- Parameters
  - req: NextRequest
    The incoming Next.js request.
  - ctx: T
    The App Router context containing dynamic route parameters.
  - error: Error
    The error thrown during endpoint execution.
  Returns Promise<NextResponse | void> | NextResponse | void
  Returns a NextResponse or void.