Param() decorator adding incompatible field to req object

[alaughlin]

Hello,

So I noticed that if I use the Param() decorator to access a url param in a handler, it adds the url param to req.params. This field is not a part of the NextApiRequest interface, so I am unable to access the field in my middleware without typescript throwing errors about the field not existing.

I am aware that I can also access the url params as one big array under req.query.params, however that field is not set on the req object when I am mocking requests for tests. The params are only present under req.params.

I tried extending NextApiRequest into a new type that includes an optional params field, however createMiddlewareDecorator() is very explicit about only wanting the req argument to be of type NextApiRequest and nothing else, so that doesn't work.

Any thoughts on what to do here?

Thanks