F# 10 #warnon not working ?

[goswinr]

Thanks for bring Fable to F#10 !
Should F# 10's #warnon work in 5.0.0-alpha.17 ?

open System

type T() =
    [<Obsolete("Use something else")>]
    static member x = 1

let hi(_)=
    #nowarn "44" // Suppress warnings for obsolete usage
    let x = T.x
    #warnon "44" // Re-enable warnings for obsolete usage
    ()

I get a
Unexpected symbol # in binding (code 10)

Do I need to position or indent them differently?

[goswinr]

I want to exclude only one member, like this:

open System

type T =

    [<Obsolete("")>]
    static member x = 1


type TT =

#nowarn "44" // Suppress warnings for obsolete usage
    static member X =
        let _ = T.x
        ()
#warnon "44" // Re-enable warnings for obsolete usage


    static member Y =
        0

    // many more members following
    // ...

but get
error FSHARP: A type definition requires one or more members or other declarations. If you intend to define an empty class, struct or interface, then use 'type ... = class end', 'interface end' or 'struct end'. (code 547)

[goswinr]

This is a workaround to still get the tooling warnings as expected, but not nice:
staring the file with:

#if FABLE_COMPILER
#nowarn "44"
#endif

and then at the member

    #if !FABLE_COMPILER // negated !
    #nowarn "44" // Suppress warnings for obsolete usage
    #endif
    static member X =
        let _ = T.x
        0
    #if !FABLE_COMPILER
    #warnon "44" // Re-enable warnings for obsolete usage
    #endif

[ncave]

@goswinr

Should F# 10's #warnon work in 5.0.0-alpha.17

Fable 5.0.0-alpha.17 does not have F# 10 yet, it will be in the next release.