How to type the data that goes through a middleware

[Satyam]

In useSWR I can declare the type of the data returned with useSWR<Sale[], Error>..

However, I couldn't find a way to tell the middleware I configured via { use: [salesMiddleware] } which I am using to transform part of the data fetched.

I just declared it as:

const salesMiddleware: Middleware = (useSWRNext) => {

but I couldn't find any way to override the declaration for the data. After several attempts at typecasting the data inside the middleware function, which looks awful, I ended up with // @ts-ignore, which is not quite the proper thing to do but, by the time being, it looks less awful than all the messy type casting here and there.

BTW: it might be nice to add typings to the examples for the middleware .

Thanks in advance for the help.

[mrfrodo24]

Bump. As far as I can tell this is still unsupported.

[patryk-smc]

3 years later, also wondering about this!