From 376f74c058cdaa00cf5abcda1ba83fb23615c801 Mon Sep 17 00:00:00 2001
From: mateo-berri <277851410+mateo-berri@users.noreply.github.com>
Date: Fri, 4 Sep 2026 17:26:45 -0700
Subject: [PATCH] refactor(vector_stores): bind the failure mode before
 matching on it

basedpyright counts a named capture after an exhaustive match under
reportUnnecessaryComparison, which pushed the merged tree one over the
budget; the wildcard case with assert_never on the bound subject is the
shape the rest of the codebase uses
---
 .../vector_store_pre_call_hook.py                          | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/litellm/integrations/vector_store_integrations/vector_store_pre_call_hook.py b/litellm/integrations/vector_store_integrations/vector_store_pre_call_hook.py
index 849e87fae40..636e076a229 100644
--- a/litellm/integrations/vector_store_integrations/vector_store_pre_call_hook.py
+++ b/litellm/integrations/vector_store_integrations/vector_store_pre_call_hook.py
@@ -161,13 +161,14 @@ class VectorStorePreCallHook(CustomLogger):
                 litellm_logging_obj.model_call_details[detail] = value
 
         if augmentation.failures:
-            match _configured_failure_mode():
+            failure_mode: Final = _configured_failure_mode()
+            match failure_mode:
                 case "error":
                     raise VectorStoreSearchError(failures=augmentation.failures, model=model)
                 case "annotate":
                     pass
-                case unreachable:
-                    assert_never(unreachable)
+                case _:
+                    assert_never(failure_mode)
 
         return model, list(augmentation.messages), non_default_params