fix(ts): widen isEnumDefined value parameter to accept any value

src/fable-library-ts/Reflection.ts

@@ -389,7 +389,7 @@ export function getEnumName(t: TypeInfo, v: number): string {
   return getEnumCase(t, v)[0];
 }
 
-export function isEnumDefined(t: TypeInfo, v: string | number): boolean {
+export function isEnumDefined(t: TypeInfo, v: any): boolean {
   try {
     const kv = getEnumCase(t, v);
     return kv[0] != null && kv[0] !== "";

tests/Js/Main/EnumTests.fs

@@ -30,6 +30,9 @@ module EnumOperations =
     // must be carried to TypeScript as `<'TEnum extends number>` (otherwise TS2362)
     let enumToInt<'TEnum when 'TEnum: enum<int>> (value: 'TEnum) : int =
         int (LanguagePrimitives.EnumToValue value)
+
+    // Unconstrained 'a passed to Enum.IsDefined; the TS output must accept any value (otherwise TS2345)
+    let isDefinedGeneric<'a> (t: System.Type) (value: 'a) : bool = System.Enum.IsDefined(t, value)
     // let enumOfValue3 value = LanguagePrimitives.EnumOfValue value
     // let enumOfValue4 = LanguagePrimitives.EnumOfValue
 
@@ -258,6 +261,11 @@ let tests =
         Enum.IsDefined(t, 5y) |> equal true
         Enum.IsDefined(t, 10y) |> equal false
 
+    testCase "Enum.IsDefined works in a generic function" <| fun () ->
+        EnumOperations.isDefinedGeneric typeof<MyEnum> "Foo" |> equal true
+        EnumOperations.isDefinedGeneric typeof<MyEnum> 5y |> equal true
+        EnumOperations.isDefinedGeneric typeof<MyEnum> 10y |> equal false
+
     testCase "Enum.Parse works" <| fun () ->
         let t = typeof<MyEnum>
         Enum.Parse(t, "Foo") |> equal (box MyEnum.Foo)