From 31552fbcddb7796d697bdc3b600758bb87faaaf8 Mon Sep 17 00:00:00 2001
From: Josh Story <story@hey.com>
Date: Fri, 5 Apr 2024 12:22:06 -0700
Subject: [PATCH] Try shorter property name to get inlining

---
 .../src/client/ReactDOMUpdatePriority.js          | 15 +++++++++++----
 packages/react-dom/src/ReactDOMSharedInternals.js |  4 ++--
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/packages/react-dom-bindings/src/client/ReactDOMUpdatePriority.js b/packages/react-dom-bindings/src/client/ReactDOMUpdatePriority.js
index a1ac296a1a642..a9b6b445a4782 100644
--- a/packages/react-dom-bindings/src/client/ReactDOMUpdatePriority.js
+++ b/packages/react-dom-bindings/src/client/ReactDOMUpdatePriority.js
@@ -19,16 +19,23 @@ import ReactDOMSharedInternals from 'shared/ReactDOMSharedInternals';
 const ReactDOMCurrentUpdatePriority =
   ReactDOMSharedInternals.ReactDOMCurrentUpdatePriority;
 
-export function setCurrentUpdatePriority(newPriority: EventPriority): void {
-  ReactDOMCurrentUpdatePriority.current = newPriority;
+export function setCurrentUpdatePriority(
+  newPriority: EventPriority,
+  // Closure will repeatedly not inline this function when it has arity 1 because
+  // the function form is shorter than the inlined implementation. We use this second
+  // argument which is unused to trick closure into inlining because it makes the
+  // inlined function shorter.
+  IntentionallyUnusedArgument: mixed,
+): void {
+  ReactDOMCurrentUpdatePriority.cup = newPriority;
 }
 
 export function getCurrentUpdatePriority(): EventPriority {
-  return ReactDOMCurrentUpdatePriority.current;
+  return ReactDOMCurrentUpdatePriority.cup;
 }
 
 export function resolveUpdatePriority(): EventPriority {
-  const updatePriority = ReactDOMCurrentUpdatePriority.current;
+  const updatePriority = ReactDOMCurrentUpdatePriority.cup;
   if (updatePriority !== NoEventPriority) {
     return updatePriority;
   }
diff --git a/packages/react-dom/src/ReactDOMSharedInternals.js b/packages/react-dom/src/ReactDOMSharedInternals.js
index 02f5c7cde78fe..d0d97f59c1056 100644
--- a/packages/react-dom/src/ReactDOMSharedInternals.js
+++ b/packages/react-dom/src/ReactDOMSharedInternals.js
@@ -24,7 +24,7 @@ type InternalsType = {
         componentOrElement: React$Component<any, any>,
       ) => null | Element | Text),
   ReactDOMCurrentUpdatePriority: {
-    current: EventPriority,
+    cup: EventPriority,
   },
 };
 
@@ -48,7 +48,7 @@ const Internals: InternalsType = {
   },
   findDOMNode: null,
   ReactDOMCurrentUpdatePriority: {
-    current: NoEventPriority,
+    cup: NoEventPriority,
   },
 };