From b643fa46be591979fa9a07932fb2bfc10c58c589 Mon Sep 17 00:00:00 2001
From: Alexander Tikhonov <fatal1ty.rnd@gmail.com>
Date: Wed, 6 Sep 2023 22:06:32 +0300
Subject: [PATCH] Do not use empty enum in Union

See https://github.com/python/cpython/issues/109022
---
 mashumaro/jsonschema/models.py | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/mashumaro/jsonschema/models.py b/mashumaro/jsonschema/models.py
index 3b6f6f5a..dbf43e18 100644
--- a/mashumaro/jsonschema/models.py
+++ b/mashumaro/jsonschema/models.py
@@ -98,11 +98,7 @@ class JSONSchema(DataClassJSONMixin):
     enum: Optional[List[Any]] = None
     const: Optional[Any] = field(default_factory=lambda: MISSING)
     format: Optional[
-        Union[
-            JSONSchemaInstanceFormat,
-            JSONSchemaStringFormat,
-            JSONSchemaInstanceFormatExtension,
-        ]
+        Union[JSONSchemaStringFormat, JSONSchemaInstanceFormatExtension]
     ] = None
     title: Optional[str] = None
     description: Optional[str] = None