From 57a8ff0d23138d87f816f6dc3536bb797239887a Mon Sep 17 00:00:00 2001
From: Aarik Ghosh <aarikghosh27@gmail.com>
Date: Thu, 30 Jul 2026 14:53:12 -0400
Subject: [PATCH] feat(json): support pathlib.PurePath and enum.Enum
 serialization in DefaultJSONProvider

---
 src/flask/json/provider.py |  7 ++++++-
 tests/test_json.py         | 13 +++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/flask/json/provider.py b/src/flask/json/provider.py
index f37cb7b209..1cc12ee822 100644
--- a/src/flask/json/provider.py
+++ b/src/flask/json/provider.py
@@ -2,7 +2,9 @@
 
 import dataclasses
 import decimal
+import enum
 import json
+import pathlib
 import typing as t
 import uuid
 import weakref
@@ -109,9 +111,12 @@ def _default(o: t.Any) -> t.Any:
     if isinstance(o, date):
         return http_date(o)
 
-    if isinstance(o, (decimal.Decimal, uuid.UUID)):
+    if isinstance(o, (decimal.Decimal, uuid.UUID, pathlib.PurePath)):
         return str(o)
 
+    if isinstance(o, enum.Enum):
+        return o.value
+
     if dataclasses and dataclasses.is_dataclass(o):
         return dataclasses.asdict(o)  # type: ignore[arg-type]
 
diff --git a/tests/test_json.py b/tests/test_json.py
index 1e2b27dc9c..9a0f319eec 100644
--- a/tests/test_json.py
+++ b/tests/test_json.py
@@ -344,3 +344,16 @@ def __html__(self):
 
     result = json.dumps(ObjectWithHTML())
     assert result == '"<p>test</p>"'
+
+
+def test_pathlib_and_enum_serialization():
+    import enum
+    import pathlib
+
+    class Status(enum.Enum):
+        PENDING = "pending"
+        ACTIVE = "active"
+
+    path = pathlib.Path("test.txt")
+    assert json.dumps(path) == '"test.txt"'
+    assert json.dumps(Status.ACTIVE) == '"active"'