From 935e2563b55dc295821619d4eac318d8035296e5 Mon Sep 17 00:00:00 2001
From: Joakim Nordling <joakim.nordling@gmail.com>
Date: Wed, 13 Oct 2021 14:16:00 +0300
Subject: [PATCH] fix: NameError when importing SingleFileSnapshotExtension
 (#557)

If you try  to import `SingleFileSnapshotExtension` it will raise `NameError: name 'SerializedData' is not defined` because SerializedData is only imported if type checking and the return type annotation was not quoted.

Example:
```
>>> from syrupy.extensions.single_file import SingleFileSnapshotExtension
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/jocke/projects/syrupy/src/syrupy/extensions/single_file.py", line 26, in <module>
    class SingleFileSnapshotExtension(AbstractSyrupyExtension):
  File "/Users/jocke/projects/syrupy/src/syrupy/extensions/single_file.py", line 33, in SingleFileSnapshotExtension
    ) -> SerializedData:
NameError: name 'SerializedData' is not defined
```
---
 src/syrupy/extensions/single_file.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/syrupy/extensions/single_file.py b/src/syrupy/extensions/single_file.py
index f6739a7e..4af378fc 100644
--- a/src/syrupy/extensions/single_file.py
+++ b/src/syrupy/extensions/single_file.py
@@ -30,7 +30,7 @@ def serialize(
         *,
         exclude: Optional["PropertyFilter"] = None,
         matcher: Optional["PropertyMatcher"] = None,
-    ) -> SerializedData:
+    ) -> "SerializedData":
         return bytes(data)
 
     def get_snapshot_name(self, *, index: int = 0) -> str: