From 4254a62ffe1cb13781988d088b2e112e58629d75 Mon Sep 17 00:00:00 2001
From: Vojtech Novak <vonovak@gmail.com>
Date: Fri, 31 Jul 2026 11:24:31 +0200
Subject: [PATCH] fix: consider extralight fonts in RCTGetFontWeight

---
 packages/react-native/React/Views/RCTFont.mm  |  2 ++
 .../RNTesterUnitTests/RCTFontTests.m          | 19 +++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/packages/react-native/React/Views/RCTFont.mm b/packages/react-native/React/Views/RCTFont.mm
index 675f40c3131c..b9c1ad26530f 100644
--- a/packages/react-native/React/Views/RCTFont.mm
+++ b/packages/react-native/React/Views/RCTFont.mm
@@ -24,6 +24,7 @@ RCTFontWeight RCTGetFontWeight(UIFont *font)
     weightSuffixes = @[
       @"normal",
       @"ultralight",
+      @"extralight",
       @"thin",
       @"light",
       @"regular",
@@ -39,6 +40,7 @@ RCTFontWeight RCTGetFontWeight(UIFont *font)
     fontWeights = @[
       @(UIFontWeightRegular),
       @(UIFontWeightUltraLight),
+      @(UIFontWeightUltraLight),
       @(UIFontWeightThin),
       @(UIFontWeightLight),
       @(UIFontWeightRegular),
diff --git a/packages/rn-tester/RNTesterUnitTests/RCTFontTests.m b/packages/rn-tester/RNTesterUnitTests/RCTFontTests.m
index fc686c65f250..db93a4fd8567 100644
--- a/packages/rn-tester/RNTesterUnitTests/RCTFontTests.m
+++ b/packages/rn-tester/RNTesterUnitTests/RCTFontTests.m
@@ -49,6 +49,25 @@ - (void)testWeight
   }
 }
 
+- (void)testWeightFromFontName
+{
+  // "ExtraLight" and "UltraLight" name the same weight (OpenType usWeightClass 200).
+  {
+    UIFont *font = [UIFont fontWithName:@"HelveticaNeue-UltraLight" size:14];
+    XCTAssertEqual(RCTGetFontWeight(font), UIFontWeightUltraLight);
+  }
+#if !TARGET_OS_TV
+  {
+    UIFont *font = [UIFont fontWithName:@"Seravek-ExtraLight" size:14];
+    XCTAssertEqual(RCTGetFontWeight(font), UIFontWeightUltraLight);
+  }
+  {
+    UIFont *font = [UIFont fontWithName:@"Seravek-Light" size:14];
+    XCTAssertEqual(RCTGetFontWeight(font), UIFontWeightLight);
+  }
+#endif
+}
+
 - (void)testSize
 {
   {