Kotlinify ContextUtils (#43832)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/43832

Changelog: [Internal]

As part of the Sustainability Week (see [post](https://fb.workplace.com/groups/251759413609061/permalink/742797531171911/)).

Reviewed By: arushikesarwani94

Differential Revision: D55708157

fbshipit-source-id: 8c89a569f5ace30c480dc562c2d8e4e5cab208dc

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

@@ -5871,9 +5871,9 @@ public abstract interface class com/facebook/react/viewmanagers/UnimplementedNat
 	public abstract fun setName (Landroid/view/View;Ljava/lang/String;)V
 }
 
-public class com/facebook/react/views/common/ContextUtils {
-	public fun <init> ()V
-	public static fun findContextOfType (Landroid/content/Context;Ljava/lang/Class;)Ljava/lang/Object;
+public final class com/facebook/react/views/common/ContextUtils {
+	public static final field INSTANCE Lcom/facebook/react/views/common/ContextUtils;
+	public static final fun findContextOfType (Landroid/content/Context;Ljava/lang/Class;)Ljava/lang/Object;
 }
 
 public class com/facebook/react/views/common/ViewUtils {

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/common/ContextUtils.kt

@@ -5,18 +5,15 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-package com.facebook.react.views.common;
+package com.facebook.react.views.common
 
-import android.content.Context;
-import android.content.ContextWrapper;
-import androidx.annotation.Nullable;
-import com.facebook.infer.annotation.Nullsafe;
+import android.content.Context
+import android.content.ContextWrapper
 
 /**
  * Class containing static methods involving manipulations of Contexts and their related subclasses.
  */
-@Nullsafe(Nullsafe.Mode.LOCAL)
-public class ContextUtils {
+public object ContextUtils {
 
   /**
    * Returns the nearest context in the chain (as defined by ContextWrapper.getBaseContext()) which
@@ -24,23 +21,23 @@ public class ContextUtils {
    *
    * @param context Initial context
    * @param clazz Class instance to look for
-   * @param <T>
    * @return the first context which is an instance of the specified class, or null if none exists
    */
-  public static @Nullable <T> T findContextOfType(
-      @Nullable Context context, Class<? extends T> clazz) {
-    while (!(clazz.isInstance(context))) {
-      if (context instanceof ContextWrapper) {
-        Context baseContext = ((ContextWrapper) context).getBaseContext();
-        if (context == baseContext) {
-          return null;
+  @JvmStatic
+  public fun <T> findContextOfType(context: Context?, clazz: Class<out T>): T? {
+    var currentContext = context
+    while (!clazz.isInstance(currentContext)) {
+      if (currentContext is ContextWrapper) {
+        val baseContext = currentContext.baseContext
+        if (currentContext === baseContext) {
+          return null
         } else {
-          context = baseContext;
+          currentContext = baseContext
         }
       } else {
-        return null;
+        return null
       }
     }
-    return (T) context;
+    @Suppress("UNCHECKED_CAST") return currentContext as T?
   }
 }