Kotlinify YogaNodePool

packages/react-native/ReactAndroid/api/ReactAndroid.api

@@ -2488,7 +2488,7 @@ public class com/facebook/react/fabric/BindingImpl : com/facebook/react/fabric/B
 	public fun unregisterSurface (Lcom/facebook/react/fabric/SurfaceHandlerBinding;)V
 }
 
-public class com/facebook/react/fabric/ComponentFactory {
+public final class com/facebook/react/fabric/ComponentFactory {
 	public fun <init> ()V
 }
 
@@ -2777,8 +2777,8 @@ public abstract interface class com/facebook/react/fabric/mounting/mountitems/Ba
 
 public abstract class com/facebook/react/fabric/mounting/mountitems/DispatchCommandMountItem : com/facebook/react/fabric/mounting/mountitems/MountItem {
 	public fun <init> ()V
-	public fun getRetries ()I
-	public fun incrementRetries ()V
+	public final fun getRetries ()I
+	public final fun incrementRetries ()V
 }
 
 public abstract interface class com/facebook/react/fabric/mounting/mountitems/MountItem {

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/common/LifecycleState.java → packages/react-native/ReactAndroid/src/main/java/com/facebook/react/common/LifecycleState.kt

@@ -5,9 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-package com.facebook.react.common;
-
-import com.facebook.infer.annotation.Nullsafe;
+package com.facebook.react.common
 
 /**
  * Lifecycle state for an Activity. The state right after pause and right before resume are the
@@ -23,8 +21,7 @@
  * <p>RESUMED is used when a ReactRootView is rendered on the screen and the user can interact with
  * it.
  */
-@Nullsafe(Nullsafe.Mode.LOCAL)
-public enum LifecycleState {
+public enum class LifecycleState {
   BEFORE_CREATE,
   BEFORE_RESUME,
   RESUMED,

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/fabric/ComponentFactory.kt

@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.fabric
+
+import com.facebook.jni.HybridData
+import com.facebook.proguard.annotations.DoNotStripAny
+
+@DoNotStripAny
+public class ComponentFactory {
+
+  @Suppress("NoHungarianNotation") private val mHybridData: HybridData = initHybrid()
+
+  private companion object {
+    init {
+      FabricSoLoader.staticInit()
+    }
+
+    @JvmStatic private external fun initHybrid(): HybridData
+  }
+}

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/fabric/mounting/mountitems/DispatchCommandMountItem.java → packages/react-native/ReactAndroid/src/main/java/com/facebook/react/fabric/mounting/mountitems/DispatchCommandMountItem.kt

@@ -5,27 +5,22 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-package com.facebook.react.fabric.mounting.mountitems;
+package com.facebook.react.fabric.mounting.mountitems
 
-import androidx.annotation.UiThread;
-import com.facebook.infer.annotation.Nullsafe;
+import androidx.annotation.UiThread
 
 /**
  * This is a common interface for View Command operations. Once we delete the deprecated {@link
  * DispatchIntCommandMountItem}, we can delete this interface too. It provides a set of common
  * operations to simplify generic operations on all types of ViewCommands.
  */
-@Nullsafe(Nullsafe.Mode.LOCAL)
-public abstract class DispatchCommandMountItem implements MountItem {
-  private int mNumRetries = 0;
+public abstract class DispatchCommandMountItem : MountItem {
+  private var numRetries: Int = 0
 
   @UiThread
-  public void incrementRetries() {
-    mNumRetries++;
+  public fun incrementRetries() {
+    numRetries++
   }
 
-  @UiThread
-  public int getRetries() {
-    return mNumRetries;
-  }
+  @UiThread public fun getRetries(): Int = numRetries
 }

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/packagerconnection/NotificationOnlyHandler.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.packagerconnection
+
+import com.facebook.common.logging.FLog
+
+public abstract class NotificationOnlyHandler : RequestHandler {
+
+  override final fun onRequest(params: Any?, responder: Responder) {
+    responder.error("Request is not supported")
+    FLog.e(JSPackagerClient::class.java.simpleName, "Request is not supported")
+  }
+
+  override abstract fun onNotification(params: Any?)
+}

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/NativeKind.java → packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/NativeKind.kt

@@ -5,16 +5,13 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-package com.facebook.react.uimanager;
-
-import com.facebook.infer.annotation.Nullsafe;
+package com.facebook.react.uimanager
 
 // Common conditionals:
 //   - `kind == PARENT` checks whether the node can host children in the native tree.
 //   - `kind != NONE` checks whether the node appears in the native tree.
 
-@Nullsafe(Nullsafe.Mode.LOCAL)
-public enum NativeKind {
+public enum class NativeKind {
   // Node is in the native hierarchy and the HierarchyOptimizer should assume it can host children
   // (e.g. because it's a ViewGroup). Note that it's okay if the node doesn't support children. When
   // the HierarchyOptimizer generates children manipulation commands for that node, the
@@ -24,5 +21,5 @@ public enum NativeKind {
   // because it isn't a ViewGroup). Consequently, its children need to be hosted by an ancestor.
   LEAF,
   // Node is not in the native hierarchy.
-  NONE
+  NONE,
 }

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/YogaNodePool.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.uimanager
+
+import com.facebook.react.common.ClearableSynchronizedPool
+import com.facebook.yoga.YogaNode
+
+/** Static holder for a recycling pool of YogaNodes. */
+internal object YogaNodePool {
+
+  private val pool: ClearableSynchronizedPool<YogaNode> by
+      lazy(LazyThreadSafetyMode.SYNCHRONIZED) { ClearableSynchronizedPool(1024) }
+
+  @JvmStatic fun get(): ClearableSynchronizedPool<YogaNode> = pool
+}