From 6ba9c2759d4de5a65f24c0cfe5e2d68d828dbfa5 Mon Sep 17 00:00:00 2001
From: hectahertz <hectahertz@gmail.com>
Date: Wed, 4 Mar 2026 13:28:50 +0100
Subject: [PATCH 1/3] perf(Dialog): use stable context value reference

---
 packages/react/src/Dialog/Dialog.tsx | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/react/src/Dialog/Dialog.tsx b/packages/react/src/Dialog/Dialog.tsx
index 2a070a88d66..43d9db6102d 100644
--- a/packages/react/src/Dialog/Dialog.tsx
+++ b/packages/react/src/Dialog/Dialog.tsx
@@ -242,6 +242,7 @@ const defaultFooterButtons: Array<DialogButtonProps> = []
 
 // useful to determine whether we're inside a Dialog from a nested component
 export const DialogContext = React.createContext<object | undefined>(undefined)
+const DIALOG_CONTEXT_VALUE = {}
 
 const _Dialog = React.forwardRef<HTMLDivElement, React.PropsWithChildren<DialogProps>>((props, forwardedRef) => {
   const {
@@ -348,7 +349,7 @@ const _Dialog = React.forwardRef<HTMLDivElement, React.PropsWithChildren<DialogP
         )
 
   return (
-    <DialogContext.Provider value={{}}>
+    <DialogContext.Provider value={DIALOG_CONTEXT_VALUE}>
       <Portal>
         <div
           ref={backdropRef}

From c5fffa434368f2eb2163dcf06ea0decc7fc62386 Mon Sep 17 00:00:00 2001
From: hectahertz <hectahertz@gmail.com>
Date: Wed, 4 Mar 2026 13:28:59 +0100
Subject: [PATCH 2/3] chore: changeset

---
 .changeset/perf-dialog-stable-context.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .changeset/perf-dialog-stable-context.md

diff --git a/.changeset/perf-dialog-stable-context.md b/.changeset/perf-dialog-stable-context.md
new file mode 100644
index 00000000000..d0ec3c95caf
--- /dev/null
+++ b/.changeset/perf-dialog-stable-context.md
@@ -0,0 +1,5 @@
+---
+'@primer/react': patch
+---
+
+Use stable object reference for DialogContext value to prevent unnecessary re-renders

From 91a3d587ee34c2288ba88c94a74d02df7bad611a Mon Sep 17 00:00:00 2001
From: hectahertz <hectahertz@gmail.com>
Date: Thu, 5 Mar 2026 10:05:04 +0100
Subject: [PATCH 3/3] fix: freeze DIALOG_CONTEXT_VALUE to prevent accidental
 mutation

---
 packages/react/src/Dialog/Dialog.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/react/src/Dialog/Dialog.tsx b/packages/react/src/Dialog/Dialog.tsx
index 43d9db6102d..5c5e4c2373a 100644
--- a/packages/react/src/Dialog/Dialog.tsx
+++ b/packages/react/src/Dialog/Dialog.tsx
@@ -242,7 +242,7 @@ const defaultFooterButtons: Array<DialogButtonProps> = []
 
 // useful to determine whether we're inside a Dialog from a nested component
 export const DialogContext = React.createContext<object | undefined>(undefined)
-const DIALOG_CONTEXT_VALUE = {}
+const DIALOG_CONTEXT_VALUE = Object.freeze({})
 
 const _Dialog = React.forwardRef<HTMLDivElement, React.PropsWithChildren<DialogProps>>((props, forwardedRef) => {
   const {