Don't write null for empty option fields of generic records

zio · Aug 14, 2024 · 77eb2a9 · 77eb2a9
1 parent ce3a315
commit 77eb2a9
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/zio-schema-json/shared/src/main/scala/zio/schema/codec/JsonCodec.scala b/zio-schema-json/shared/src/main/scala/zio/schema/codec/JsonCodec.scala
@@ -944,8 +944,9 @@ object JsonCodec {
         cfg.ignoreEmptyCollections || schema.optional
 
       val isEmptyCollection = value match {
-        case _: Iterable[_] => value.asInstanceOf[Iterable[_]].isEmpty
-        case _              => false
+        case _: Iterable[_]     => value.asInstanceOf[Iterable[_]].isEmpty
+        case _: IterableOnce[_] => value.asInstanceOf[IterableOnce[_]].iterator.isEmpty
+        case _                  => false
       }
 
       ignoreEmptyCollections && isEmptyCollection