Variable preflight

Type Declaration

• • (): (req: any, res: any, next: any) => void

  • Builds the middleware that answers every OPTIONS request.

    An allowed origin gets the CORS headers; every preflight is answered 204 here, except on a GNAP grant endpoint, where OPTIONS continues to the route because RFC 9635 section 9 makes it the discovery request.

    Returns (req: any, res: any, next: any) => void

    the express middleware