From 12b85d06e5cb2bfd0eae061930565f680f163bba Mon Sep 17 00:00:00 2001
From: Gregory Moskaliuk <mosckalyuck@gmail.com>
Date: Fri, 3 Jul 2026 13:50:56 +0200
Subject: [PATCH 1/2] perf(js): memoize sharedProps in EnrichedMarkdownText

The sharedProps object passed to the native component was recreated on
every render, forcing native prop diffing even when no values changed.
Wrap it in useMemo with precise dependencies so parent re-renders that
don't change any markdown-related props skip the native bridge entirely.

Co-authored-by: Cursor <cursoragent@cursor.com>
---
 .../src/native/EnrichedMarkdownText.tsx       | 86 +++++++++++++------
 1 file changed, 59 insertions(+), 27 deletions(-)

diff --git a/packages/react-native-enriched-markdown/src/native/EnrichedMarkdownText.tsx b/packages/react-native-enriched-markdown/src/native/EnrichedMarkdownText.tsx
index 7ca4a56ed..2bd2a378a 100644
--- a/packages/react-native-enriched-markdown/src/native/EnrichedMarkdownText.tsx
+++ b/packages/react-native-enriched-markdown/src/native/EnrichedMarkdownText.tsx
@@ -263,33 +263,65 @@ export const EnrichedMarkdownText = ({
     [accessibilityLabels]
   );
 
-  const sharedProps = {
-    markdown,
-    markdownStyle: normalizedStyle,
-    onLinkPress: handleLinkPress,
-    onLinkLongPress: handleLinkLongPress,
-    onTaskListItemPress: handleTaskListItemPress,
-    enableLinkPreview: onLinkLongPress == null && (enableLinkPreview ?? true),
-    selectable,
-    md4cFlags: normalizedMd4cFlags,
-    allowFontScaling,
-    maxFontSizeMultiplier,
-    allowTrailingMargin,
-    streamingAnimation,
-    streamingConfig: normalizedStreamingConfig,
-    spoilerOverlay,
-    style: containerStyle,
-    contextMenuItems: nativeContextMenuItems,
-    selectionMenuConfig: normalizedSelectionMenuConfig,
-    accessibilityLabels: resolvedAccessibilityLabels,
-    onContextMenuItemPress: handleContextMenuItemPress,
-    selectionColor,
-    selectionHandleColor,
-    textBreakStrategy,
-    lineBreakStrategyIOS,
-    writingDirection,
-    ...rest,
-  };
+  const enableLinkPreviewResolved =
+    onLinkLongPress == null && (enableLinkPreview ?? true);
+
+  const sharedProps = useMemo(
+    () => ({
+      markdown,
+      markdownStyle: normalizedStyle,
+      onLinkPress: handleLinkPress,
+      onLinkLongPress: handleLinkLongPress,
+      onTaskListItemPress: handleTaskListItemPress,
+      enableLinkPreview: enableLinkPreviewResolved,
+      selectable,
+      md4cFlags: normalizedMd4cFlags,
+      allowFontScaling,
+      maxFontSizeMultiplier,
+      allowTrailingMargin,
+      streamingAnimation,
+      streamingConfig: normalizedStreamingConfig,
+      spoilerOverlay,
+      style: containerStyle,
+      contextMenuItems: nativeContextMenuItems,
+      selectionMenuConfig: normalizedSelectionMenuConfig,
+      accessibilityLabels: resolvedAccessibilityLabels,
+      onContextMenuItemPress: handleContextMenuItemPress,
+      selectionColor,
+      selectionHandleColor,
+      textBreakStrategy,
+      lineBreakStrategyIOS,
+      writingDirection,
+      ...rest,
+    }),
+    [
+      markdown,
+      normalizedStyle,
+      handleLinkPress,
+      handleLinkLongPress,
+      handleTaskListItemPress,
+      enableLinkPreviewResolved,
+      selectable,
+      normalizedMd4cFlags,
+      allowFontScaling,
+      maxFontSizeMultiplier,
+      allowTrailingMargin,
+      streamingAnimation,
+      normalizedStreamingConfig,
+      spoilerOverlay,
+      containerStyle,
+      nativeContextMenuItems,
+      normalizedSelectionMenuConfig,
+      resolvedAccessibilityLabels,
+      handleContextMenuItemPress,
+      selectionColor,
+      selectionHandleColor,
+      textBreakStrategy,
+      lineBreakStrategyIOS,
+      writingDirection,
+      rest,
+    ]
+  );
 
   if (flavor === 'github') {
     return <EnrichedMarkdownNativeComponent {...sharedProps} />;

From 67b9356fcd05f210d7dde205228e9cacea431261 Mon Sep 17 00:00:00 2001
From: Gregory Moskaliuk <mosckalyuck@gmail.com>
Date: Fri, 3 Jul 2026 14:19:00 +0200
Subject: [PATCH 2/2] fix: exclude rest spread from useMemo to preserve stable
 identity

rest comes from parameter destructuring and gets a new object identity
on every render, which invalidated the memo every time. Move rest out
of the memoized object and spread it at the JSX render site instead.

Co-authored-by: Cursor <cursoragent@cursor.com>
---
 .../src/native/EnrichedMarkdownText.tsx                     | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/packages/react-native-enriched-markdown/src/native/EnrichedMarkdownText.tsx b/packages/react-native-enriched-markdown/src/native/EnrichedMarkdownText.tsx
index 2bd2a378a..40bd0f092 100644
--- a/packages/react-native-enriched-markdown/src/native/EnrichedMarkdownText.tsx
+++ b/packages/react-native-enriched-markdown/src/native/EnrichedMarkdownText.tsx
@@ -292,7 +292,6 @@ export const EnrichedMarkdownText = ({
       textBreakStrategy,
       lineBreakStrategyIOS,
       writingDirection,
-      ...rest,
     }),
     [
       markdown,
@@ -319,15 +318,14 @@ export const EnrichedMarkdownText = ({
       textBreakStrategy,
       lineBreakStrategyIOS,
       writingDirection,
-      rest,
     ]
   );
 
   if (flavor === 'github') {
-    return <EnrichedMarkdownNativeComponent {...sharedProps} />;
+    return <EnrichedMarkdownNativeComponent {...sharedProps} {...rest} />;
   }
 
-  return <EnrichedMarkdownTextNativeComponent {...sharedProps} />;
+  return <EnrichedMarkdownTextNativeComponent {...sharedProps} {...rest} />;
 };
 
 export default EnrichedMarkdownText;