From bb4347c65b2d36d12bc4364ce04f51667de781cf Mon Sep 17 00:00:00 2001
From: camchenry <1514176+camchenry@users.noreply.github.com>
Date: Mon, 20 Oct 2025 16:50:20 +0000
Subject: [PATCH] perf(linter): use precomputed extension (#14819)

Very marginally faster to use the precomputed file extension now.
---
 crates/oxc_linter/src/lib.rs | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/crates/oxc_linter/src/lib.rs b/crates/oxc_linter/src/lib.rs
index 6591d76c241bc..0b451ce6d0a4b 100644
--- a/crates/oxc_linter/src/lib.rs
+++ b/crates/oxc_linter/src/lib.rs
@@ -167,10 +167,9 @@ impl Linter {
         #[cfg(debug_assertions)]
         let mut current_diagnostic_index = 0;
 
-        let is_partial_loader_file = path
-            .extension()
-            .and_then(|ext| ext.to_str())
-            .is_some_and(|ext| LINT_PARTIAL_LOADER_EXTENSIONS.contains(&ext));
+        let is_partial_loader_file = ctx_host
+            .file_extension()
+            .is_some_and(|ext| LINT_PARTIAL_LOADER_EXTENSIONS.iter().any(|e| e == &ext));
 
         loop {
             let mut rules = rules