From 5f744e83cf68456bc9e5590dcd754ca1cbf81e76 Mon Sep 17 00:00:00 2001
From: chirokas <157580465+chirokas@users.noreply.github.com>
Date: Fri, 4 Oct 2024 04:34:48 +0800
Subject: [PATCH] `no-useless-undefined`: Ignore React 19 `useRef` calls
 (#2463)

---
 rules/no-useless-undefined.js | 2 ++
 test/no-useless-undefined.mjs | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/rules/no-useless-undefined.js b/rules/no-useless-undefined.js
index 4a24698a6a..8239bcba9f 100644
--- a/rules/no-useless-undefined.js
+++ b/rules/no-useless-undefined.js
@@ -62,6 +62,8 @@ const shouldIgnore = node => {
 		|| name === 'createContext'
 		// `setState(undefined)`
 		|| /^set[A-Z]/.test(name)
+		// React 19 useRef
+		|| name === 'useRef'
 
 		// https://vuejs.org/api/reactivity-core.html#ref
 		|| name === 'ref';
diff --git a/test/no-useless-undefined.mjs b/test/no-useless-undefined.mjs
index c95c7dde35..fd10559916 100644
--- a/test/no-useless-undefined.mjs
+++ b/test/no-useless-undefined.mjs
@@ -53,6 +53,8 @@ test({
 		'array.unshift(undefined);',
 		'createContext(undefined);',
 		'React.createContext(undefined);',
+		'useRef(undefined);',
+		'React.useRef(undefined);',
 		'setState(undefined)',
 		'setState?.(undefined)',
 		'props.setState(undefined)',