From 73b596cfdd98558df35b45558ace12301ac5e6a6 Mon Sep 17 00:00:00 2001
From: Valentin Shergin <shergin@fb.com>
Date: Mon, 25 Sep 2017 18:53:49 -0700
Subject: [PATCH] Small NaN related optimisation in RCTShadowText

Summary: NaN values can not be compared directly, so we have to use `isnan` function.

Reviewed By: mmmulani

Differential Revision: D5859761

fbshipit-source-id: bf99a1ae574cd820265bef0c2bd255b194c5dc3c
---
 Libraries/Text/RCTShadowText.m | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Libraries/Text/RCTShadowText.m b/Libraries/Text/RCTShadowText.m
index b25c8c744..267cd2087 100644
--- a/Libraries/Text/RCTShadowText.m
+++ b/Libraries/Text/RCTShadowText.m
@@ -198,7 +198,7 @@ static YGSize RCTMeasure(YGNodeRef node, float width, YGMeasureMode widthMode, f
 {
   if (
       _cachedTextStorage &&
-      width == _cachedTextStorageWidth &&
+      (width == _cachedTextStorageWidth || (isnan(width) && isnan(_cachedTextStorageWidth))) &&
       widthMode == _cachedTextStorageWidthMode &&
       _cachedEffectiveLayoutDirection == self.effectiveLayoutDirection
   ) {