The use of type `typedef<typename>` as a literal target within a match expression or when supported by an active expression as shown here shows syntax error on the `typeof<>` portion of the expression. Am I doing something wrong?

(Note that the match is against an instance of `Type` and not an actual value of that type.)

```
let (|IsType|_|) (et:Type) t = if et.Equals(t) then Some() else None

let someFunc someType =
    match someType with
    | IsType (typeof<string>) _ -> "Yes"
    | _                         -> "No"

```

Interestingly, within an `if..then` expression it does work.

```
let someFunc someType =
    if typeof<string> = someType then "Yes"
    else "No"
    )

```

This circumstance would appear to be an oversight in the language.