Fixes #3541

fable-compiler · Oct 15, 2023 · 816743e · 816743e
1 parent 597fd2c
commit 816743e
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/Fable.Transforms/Fable2Babel.fs b/src/Fable.Transforms/Fable2Babel.fs
@@ -83,7 +83,10 @@ module Lib =
     let tryJsConstructorFor purpose (com: IBabelCompiler) ctx (ent: Fable.Entity) =
         let isErased =
             match purpose with
-            | Annotation -> ent.IsMeasure || (FSharp2Fable.Util.isErasedOrStringEnumEntity ent && not ent.IsFSharpUnion)
+            | Annotation ->
+                ent.IsMeasure
+                || (ent.IsInterface && not com.IsTypeScript)
+                || (FSharp2Fable.Util.isErasedOrStringEnumEntity ent && not ent.IsFSharpUnion)
             // Historically we have used interfaces to represent JS classes in bindings,
             // so we allow explicit type references (e.g. for type testing) when the interface is global or imported.
             // But just in case we avoid referencing interfaces for reflection (as the type may not exist in actual code)