From 816743e6ffc7c343660baa4a509ae286ec0c4507 Mon Sep 17 00:00:00 2001
From: ncave <777696+ncave@users.noreply.github.com>
Date: Sat, 14 Oct 2023 18:23:58 -0700
Subject: [PATCH] Fixes #3541

---
 src/Fable.Transforms/Fable2Babel.fs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/Fable.Transforms/Fable2Babel.fs b/src/Fable.Transforms/Fable2Babel.fs
index 5eb2089740..08b0712785 100644
--- 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)