IsUnion returns false for typeof<Option<int>>

[kerams]

Description

Reflection.FSharpType.IsUnion typeof<Option<int>> returns false.

Expected and actual results

Expecting true like on .NET.

Related information

• Fable version: Online REPL

[alfonsogarciacaro]

Yes, in Fable option is a special type and is not like other unions. Although I guess we could fix it in the reflection info.

Fable/src/fable-library/Reflection.ts

Lines 111 to 113 in 7d02d3e

	export function option_type(generic: TypeInfo): TypeInfo {
	return new TypeInfo("Microsoft.FSharp.Core.FSharpOption`1", [generic]);
	}

Do you have an example of a scenario that's being blocked by this?

[kerams]

https://github.com/Zaid-Ajaj/Fable.Remoting/pull/158/files#diff-5bdc4da2122faa430fe9e2f88bdb24e6R425

Not really a blocker since one can always specifically typecheck for Option.