Fix issue with exportInterfaces and labeled arguments.

Fixes #561

Author: cristianoc

Changes.md

@@ -1,5 +1,6 @@
 # master
 - Add support for `external-stdlib` in `bsconfig.json`.
+- Fix issue with `exportInterfaces` and labeled arguments (see https://github.com/rescript-association/genType/issues/561). 
 
 # 4.0.0
 - Remove support for legacy components.

src/EmitType.ml

@@ -178,11 +178,6 @@ let rec renderType ~config ?(indent = None) ~typeNameIsInterface ~inFunType
       argTypes retType
   | GroupOfLabeledArgs fields | Object (_, fields) | Record fields ->
     let indent1 = fields |> Indent.heuristicFields ~indent in
-    let config =
-      match type0 with
-      | GroupOfLabeledArgs _ -> {config with exportInterfaces = false}
-      | _ -> config
-    in
     let closedFlag =
       match type0 with Object (closedFlag, _) -> closedFlag | _ -> Closed
     in