Enable prepared text layout by default

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsDefaults.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<669f16e131d4a5ddc026ffecc6893575>>
+ * @generated SignedSource<<1b7656b36283a43728ffd60af3e30d08>>
  */
 
 /**
@@ -53,7 +53,7 @@ public open class ReactNativeFeatureFlagsDefaults : ReactNativeFeatureFlagsProvi
 
   override fun enableAndroidAutoOffscreenCompositingForElevation(): Boolean = false
 
-  override fun enableAndroidTextMeasurementOptimizations(): Boolean = false
+  override fun enableAndroidTextMeasurementOptimizations(): Boolean = true
 
   override fun enableAsyncDiskCacheCheckInMultiSourceImageAndroid(): Boolean = false
 
@@ -117,7 +117,7 @@ public open class ReactNativeFeatureFlagsDefaults : ReactNativeFeatureFlagsProvi
 
   override fun enablePreallocatedPropsDiffOnInsertAndroid(): Boolean = false
 
-  override fun enablePreparedTextLayout(): Boolean = false
+  override fun enablePreparedTextLayout(): Boolean = true
 
   override fun enablePropsUpdateReconciliationAndroid(): Boolean = false
 
@@ -165,7 +165,7 @@ public open class ReactNativeFeatureFlagsDefaults : ReactNativeFeatureFlagsProvi
 
   override fun perfMonitorV2Enabled(): Boolean = false
 
-  override fun preparedTextCacheSize(): Double = 200.0
+  override fun preparedTextCacheSize(): Double = 1000.0
 
   override fun preventShadowTreeCommitExhaustion(): Boolean = false
 

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlagsDefaults.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<52db1adfed5fd99e4ca145b50dc413a0>>
+ * @generated SignedSource<<4f230970c9c4fc4e5e07e4b40ed46a58>>
  */
 
 /**
@@ -90,7 +90,7 @@ class ReactNativeFeatureFlagsDefaults : public ReactNativeFeatureFlagsProvider {
   }
 
   bool enableAndroidTextMeasurementOptimizations() override {
-    return false;
+    return true;
   }
 
   bool enableAsyncDiskCacheCheckInMultiSourceImageAndroid() override {
@@ -218,7 +218,7 @@ class ReactNativeFeatureFlagsDefaults : public ReactNativeFeatureFlagsProvider {
   }
 
   bool enablePreparedTextLayout() override {
-    return false;
+    return true;
   }
 
   bool enablePropsUpdateReconciliationAndroid() override {
@@ -314,7 +314,7 @@ class ReactNativeFeatureFlagsDefaults : public ReactNativeFeatureFlagsProvider {
   }
 
   double preparedTextCacheSize() override {
-    return 200.0;
+    return 1000.0;
   }
 
   bool preventShadowTreeCommitExhaustion() override {

packages/react-native/scripts/featureflags/ReactNativeFeatureFlags.config.js

@@ -215,7 +215,7 @@ const definitions: FeatureFlagDefinitions = {
       ossReleaseStage: 'none',
     },
     enableAndroidTextMeasurementOptimizations: {
-      defaultValue: false,
+      defaultValue: true,
       metadata: {
         dateAdded: '2025-07-01',
         description:
@@ -556,7 +556,7 @@ const definitions: FeatureFlagDefinitions = {
       ossReleaseStage: 'none',
     },
     enablePreparedTextLayout: {
-      defaultValue: false,
+      defaultValue: true,
       metadata: {
         dateAdded: '2025-05-01',
         description: 'Enables caching text layout artifacts for later reuse',
@@ -816,10 +816,10 @@ const definitions: FeatureFlagDefinitions = {
       ossReleaseStage: 'none',
     },
     preparedTextCacheSize: {
-      defaultValue: 200,
+      defaultValue: 1000,
       metadata: {
         description: 'Number cached PreparedLayouts in TextLayoutManager cache',
-        expectedReleaseValue: 200,
+        expectedReleaseValue: 1000,
         purpose: 'operational',
       },
       ossReleaseStage: 'none',

packages/react-native/src/private/featureflags/ReactNativeFeatureFlags.js

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<4eb26b4190d023d26a50f54b6e3ea5eb>>
+ * @generated SignedSource<<03a2b16f97c3bb25b3bfa5e6a8c572ed>>
  * @flow strict
  * @noformat
  */
@@ -288,7 +288,7 @@ export const enableAndroidAutoOffscreenCompositingForElevation: Getter<boolean>
 /**
  * Enables various optimizations throughout the path of measuring text on Android.
  */
-export const enableAndroidTextMeasurementOptimizations: Getter<boolean> = createNativeFlagGetter('enableAndroidTextMeasurementOptimizations', false);
+export const enableAndroidTextMeasurementOptimizations: Getter<boolean> = createNativeFlagGetter('enableAndroidTextMeasurementOptimizations', true);
 /**
  * Runs multi-source image disk-cache checks asynchronously on Android.
  */
@@ -416,7 +416,7 @@ export const enablePreallocatedPropsDiffOnInsertAndroid: Getter<boolean> = creat
 /**
  * Enables caching text layout artifacts for later reuse
  */
-export const enablePreparedTextLayout: Getter<boolean> = createNativeFlagGetter('enablePreparedTextLayout', false);
+export const enablePreparedTextLayout: Getter<boolean> = createNativeFlagGetter('enablePreparedTextLayout', true);
 /**
  * When enabled, Android will receive prop updates based on the differences between the last rendered shadow node and the last committed shadow node.
  */
@@ -512,7 +512,7 @@ export const perfMonitorV2Enabled: Getter<boolean> = createNativeFlagGetter('per
 /**
  * Number cached PreparedLayouts in TextLayoutManager cache
  */
-export const preparedTextCacheSize: Getter<number> = createNativeFlagGetter('preparedTextCacheSize', 200);
+export const preparedTextCacheSize: Getter<number> = createNativeFlagGetter('preparedTextCacheSize', 1000);
 /**
  * Enables a new mechanism in ShadowTree to prevent problems caused by multiple threads trying to commit concurrently. If a thread tries to commit a few times unsuccessfully, it will acquire a lock and try again.
  */