From 6d6cbe0b2f8778db44087cf0e091b7c76e275ae6 Mon Sep 17 00:00:00 2001
From: Josh Black <joshblack@github.com>
Date: Thu, 15 Oct 2026 15:42:00 -0500
Subject: [PATCH] perf(react-compiler): enable useSafeTimeout

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: e632d4e3-54d2-4423-9888-8e37b00494a3
---
 .changeset/react-compiler-safe-timeout.md  | 5 +++++
 packages/react/script/react-compiler.mjs   | 1 -
 packages/react/src/hooks/useSafeTimeout.ts | 4 ++--
 3 files changed, 7 insertions(+), 3 deletions(-)
 create mode 100644 .changeset/react-compiler-safe-timeout.md

diff --git a/.changeset/react-compiler-safe-timeout.md b/.changeset/react-compiler-safe-timeout.md
new file mode 100644
index 00000000000..f03fcec132b
--- /dev/null
+++ b/.changeset/react-compiler-safe-timeout.md
@@ -0,0 +1,5 @@
+---
+'@primer/react': minor
+---
+
+useSafeTimeout: Support automatic memoization with React Compiler.
diff --git a/packages/react/script/react-compiler.mjs b/packages/react/script/react-compiler.mjs
index dab247978a0..1999567b8a1 100644
--- a/packages/react/script/react-compiler.mjs
+++ b/packages/react/script/react-compiler.mjs
@@ -39,7 +39,6 @@ const unsupportedPatterns = [
   'src/hooks/useOnEscapePress.ts',
   'src/hooks/useOnOutsideClick.tsx',
   'src/hooks/useResizeObserver.ts',
-  'src/hooks/useSafeTimeout.ts',
   'src/internal/hooks/__tests__/useFocus.test.tsx',
   'src/internal/hooks/useDevOnlyEffect.ts',
   'src/utils/StressTest.tsx',
diff --git a/packages/react/src/hooks/useSafeTimeout.ts b/packages/react/src/hooks/useSafeTimeout.ts
index 2ee793c24d8..96922e6c813 100644
--- a/packages/react/src/hooks/useSafeTimeout.ts
+++ b/packages/react/src/hooks/useSafeTimeout.ts
@@ -26,9 +26,9 @@ export default function useSafeTimeout(): {safeSetTimeout: SetTimeout; safeClear
   }, [])
 
   useEffect(() => {
+    const timerSet = timers.current
     return () => {
-      // eslint-disable-next-line react-hooks/exhaustive-deps
-      for (const id of timers.current) {
+      for (const id of timerSet) {
         clearTimeout(id)
       }
     }