'Typesafe Operation Handlers' doesn't work, conflict in type between `req` and `params` (`unknown`) in `OperationHandler`

[reivilibre]

The documented pattern for 'Typesafe Operation Handlers' doesn't seem to work (anymore?), as it produces the following error:

error TS2322: Type '(c: Context<RequestBody, PathParameters, any, any, any, Document>, req: Request<ParamsDictionary, any, any, ParsedQs, Record<...>>, res: Response<...>) => Promise<...>' is not assignable to type 'OperationHandler<"reconfigureRepo">'.
  Types of parameters 'req' and 'params' are incompatible.
    Type 'unknown' is not assignable to type 'Request<ParamsDictionary, any, any, ParsedQs, Record<string, any>>'.

To work around this I have just defined my own OperationHandler type as follows:

export type OperationHandler<operationId extends keyof Operations> = (
  c: OperationContext<operationId>,
  req: ExpressRequest,
  res: ExpressResponse,
) => Promise<OperationHandlerResponse<operationId>>;