From 42881ba35d8e70511302d00a7ce1a1b30b951f91 Mon Sep 17 00:00:00 2001
From: Abraham Guo <aguo@precisionplanting.com>
Date: Tue, 28 Nov 2023 11:52:34 -0600
Subject: [PATCH] `no-useless-undefined`: Ignore React state setters (#2223)

---
 rules/no-useless-undefined.js | 2 ++
 test/no-useless-undefined.mjs | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/rules/no-useless-undefined.js b/rules/no-useless-undefined.js
index c5aae75ede..2a4b4f13f8 100644
--- a/rules/no-useless-undefined.js
+++ b/rules/no-useless-undefined.js
@@ -60,6 +60,8 @@ const shouldIgnore = node => {
 
 		// `React.createContext(undefined)`
 		|| name === 'createContext'
+		// `setState(undefined)`
+		|| /^set[A-Z]/.test(name)
 
 		// 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 9964a7a14c..b55756aa47 100644
--- a/test/no-useless-undefined.mjs
+++ b/test/no-useless-undefined.mjs
@@ -53,6 +53,10 @@ test({
 		'array.unshift(undefined);',
 		'createContext(undefined);',
 		'React.createContext(undefined);',
+		'setState(undefined)',
+		'setState?.(undefined)',
+		'props.setState(undefined)',
+		'props.setState?.(undefined)',
 		'array.includes(undefined)',
 		'set.has(undefined)',