Initial commit

android/app/src/debug/AndroidManifest.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
+
+    <application
+        android:usesCleartextTraffic="true"
+        tools:targetApi="28"
+        tools:ignore="GoogleAppIndexingWarning">
+        <activity android:name="com.facebook.react.devsupport.DevSettingsActivity" android:exported="false" />
+    </application>
+</manifest>

android/app/src/debug/java/com/app/ReactNativeFlipper.java

@@ -0,0 +1,73 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ */
+package com.app;
+
+import android.content.Context;
+import com.facebook.flipper.android.AndroidFlipperClient;
+import com.facebook.flipper.android.utils.FlipperUtils;
+import com.facebook.flipper.core.FlipperClient;
+import com.facebook.flipper.plugins.crashreporter.CrashReporterPlugin;
+import com.facebook.flipper.plugins.databases.DatabasesFlipperPlugin;
+import com.facebook.flipper.plugins.fresco.FrescoFlipperPlugin;
+import com.facebook.flipper.plugins.inspector.DescriptorMapping;
+import com.facebook.flipper.plugins.inspector.InspectorFlipperPlugin;
+import com.facebook.flipper.plugins.network.FlipperOkhttpInterceptor;
+import com.facebook.flipper.plugins.network.NetworkFlipperPlugin;
+import com.facebook.flipper.plugins.react.ReactFlipperPlugin;
+import com.facebook.flipper.plugins.sharedpreferences.SharedPreferencesFlipperPlugin;
+import com.facebook.react.ReactInstanceEventListener;
+import com.facebook.react.ReactInstanceManager;
+import com.facebook.react.bridge.ReactContext;
+import com.facebook.react.modules.network.NetworkingModule;
+import okhttp3.OkHttpClient;
+
+public class ReactNativeFlipper {
+  public static void initializeFlipper(Context context, ReactInstanceManager reactInstanceManager) {
+    if (FlipperUtils.shouldEnableFlipper(context)) {
+      final FlipperClient client = AndroidFlipperClient.getInstance(context);
+
+      client.addPlugin(new InspectorFlipperPlugin(context, DescriptorMapping.withDefaults()));
+      client.addPlugin(new ReactFlipperPlugin());
+      client.addPlugin(new DatabasesFlipperPlugin(context));
+      client.addPlugin(new SharedPreferencesFlipperPlugin(context));
+      client.addPlugin(CrashReporterPlugin.getInstance());
+
+      NetworkFlipperPlugin networkFlipperPlugin = new NetworkFlipperPlugin();
+      NetworkingModule.setCustomClientBuilder(
+          new NetworkingModule.CustomClientBuilder() {
+            @Override
+            public void apply(OkHttpClient.Builder builder) {
+              builder.addNetworkInterceptor(new FlipperOkhttpInterceptor(networkFlipperPlugin));
+            }
+          });
+      client.addPlugin(networkFlipperPlugin);
+      client.start();
+
+      // Fresco Plugin needs to ensure that ImagePipelineFactory is initialized
+      // Hence we run if after all native modules have been initialized
+      ReactContext reactContext = reactInstanceManager.getCurrentReactContext();
+      if (reactContext == null) {
+        reactInstanceManager.addReactInstanceEventListener(
+            new ReactInstanceEventListener() {
+              @Override
+              public void onReactContextInitialized(ReactContext reactContext) {
+                reactInstanceManager.removeReactInstanceEventListener(this);
+                reactContext.runOnNativeModulesQueueThread(
+                    new Runnable() {
+                      @Override
+                      public void run() {
+                        client.addPlugin(new FrescoFlipperPlugin());
+                      }
+                    });
+              }
+            });
+      } else {
+        client.addPlugin(new FrescoFlipperPlugin());
+      }
+    }
+  }
+}

android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,26 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  package="com.app">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application
+      android:name=".MainApplication"
+      android:label="@string/app_name"
+      android:icon="@mipmap/ic_launcher"
+      android:roundIcon="@mipmap/ic_launcher_round"
+      android:allowBackup="false"
+      android:theme="@style/AppTheme">
+      <activity
+        android:name=".MainActivity"
+        android:label="@string/app_name"
+        android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|screenSize|smallestScreenSize|uiMode"
+        android:launchMode="singleTask"
+        android:windowSoftInputMode="adjustResize"
+        android:exported="true">
+        <intent-filter>
+            <action android:name="android.intent.action.MAIN" />
+            <category android:name="android.intent.category.LAUNCHER" />
+        </intent-filter>
+      </activity>
+    </application>
+</manifest>

android/app/src/main/java/com/app/MainActivity.java

@@ -0,0 +1,40 @@
+package com.app;
+
+import com.facebook.react.ReactActivity;
+import com.facebook.react.ReactActivityDelegate;
+import com.facebook.react.ReactRootView;
+
+public class MainActivity extends ReactActivity {
+
+  /**
+   * Returns the name of the main component registered from JavaScript. This is used to schedule
+   * rendering of the component.
+   */
+  @Override
+  protected String getMainComponentName() {
+    return "app";
+  }
+
+  /**
+   * Returns the instance of the {@link ReactActivityDelegate}. There the RootView is created and
+   * you can specify the rendered you wish to use (Fabric or the older renderer).
+   */
+  @Override
+  protected ReactActivityDelegate createReactActivityDelegate() {
+    return new MainActivityDelegate(this, getMainComponentName());
+  }
+
+  public static class MainActivityDelegate extends ReactActivityDelegate {
+    public MainActivityDelegate(ReactActivity activity, String mainComponentName) {
+      super(activity, mainComponentName);
+    }
+
+    @Override
+    protected ReactRootView createRootView() {
+      ReactRootView reactRootView = new ReactRootView(getContext());
+      // If you opted-in for the New Architecture, we enable the Fabric Renderer.
+      reactRootView.setIsFabric(BuildConfig.IS_NEW_ARCHITECTURE_ENABLED);
+      return reactRootView;
+    }
+  }
+}

android/app/src/main/java/com/app/MainApplication.java

@@ -0,0 +1,91 @@
+package com.app;
+
+import android.app.Application;
+import android.content.Context;
+import com.facebook.react.PackageList;
+import com.facebook.react.ReactApplication;
+import com.facebook.react.ReactInstanceManager;
+import com.facebook.react.ReactNativeHost;
+import com.facebook.react.ReactPackage;
+import com.facebook.react.config.ReactFeatureFlags;
+import com.facebook.soloader.SoLoader;
+import com.app.newarchitecture.MainApplicationReactNativeHost;
+import java.lang.reflect.InvocationTargetException;
+import java.util.List;
+
+public class MainApplication extends Application implements ReactApplication {
+
+  private final ReactNativeHost mReactNativeHost =
+      new ReactNativeHost(this) {
+        @Override
+        public boolean getUseDeveloperSupport() {
+          return BuildConfig.DEBUG;
+        }
+
+        @Override
+        protected List<ReactPackage> getPackages() {
+          @SuppressWarnings("UnnecessaryLocalVariable")
+          List<ReactPackage> packages = new PackageList(this).getPackages();
+          // Packages that cannot be autolinked yet can be added manually here, for example:
+          // packages.add(new MyReactNativePackage());
+          return packages;
+        }
+
+        @Override
+        protected String getJSMainModuleName() {
+          return "index";
+        }
+      };
+
+  private final ReactNativeHost mNewArchitectureNativeHost =
+      new MainApplicationReactNativeHost(this);
+
+  @Override
+  public ReactNativeHost getReactNativeHost() {
+    if (BuildConfig.IS_NEW_ARCHITECTURE_ENABLED) {
+      return mNewArchitectureNativeHost;
+    } else {
+      return mReactNativeHost;
+    }
+  }
+
+  @Override
+  public void onCreate() {
+    super.onCreate();
+    // If you opted-in for the New Architecture, we enable the TurboModule system
+    ReactFeatureFlags.useTurboModules = BuildConfig.IS_NEW_ARCHITECTURE_ENABLED;
+    SoLoader.init(this, /* native exopackage */ false);
+    initializeFlipper(this, getReactNativeHost().getReactInstanceManager());
+  }
+
+  /**
+   * Loads Flipper in React Native templates. Call this in the onCreate method with something like
+   * initializeFlipper(this, getReactNativeHost().getReactInstanceManager());
+   *
+   * @param context
+   * @param reactInstanceManager
+   */
+  private static void initializeFlipper(
+      Context context, ReactInstanceManager reactInstanceManager) {
+    if (BuildConfig.DEBUG) {
+      try {
+        /*
+         We use reflection here to pick up the class that initializes Flipper,
+        since Flipper library is not available in release mode
+        */
+        Class<?> aClass = Class.forName("com.app.ReactNativeFlipper");
+        aClass
+            .getMethod("initializeFlipper", Context.class, ReactInstanceManager.class)
+            .invoke(null, context, reactInstanceManager);
+      } catch (ClassNotFoundException e) {
+        e.printStackTrace();
+      } catch (NoSuchMethodException e) {
+        e.printStackTrace();
+      } catch (IllegalAccessException e) {
+        e.printStackTrace();
+      } catch (InvocationTargetException e) {
+        e.printStackTrace();
+      }
+    }
+  }
+}

android/app/src/main/java/com/app/newarchitecture/MainApplicationReactNativeHost.java

@@ -0,0 +1,116 @@
+package com.app.newarchitecture;
+
+import android.app.Application;
+import androidx.annotation.NonNull;
+import com.facebook.react.PackageList;
+import com.facebook.react.ReactInstanceManager;
+import com.facebook.react.ReactNativeHost;
+import com.facebook.react.ReactPackage;
+import com.facebook.react.ReactPackageTurboModuleManagerDelegate;
+import com.facebook.react.bridge.JSIModulePackage;
+import com.facebook.react.bridge.JSIModuleProvider;
+import com.facebook.react.bridge.JSIModuleSpec;
+import com.facebook.react.bridge.JSIModuleType;
+import com.facebook.react.bridge.JavaScriptContextHolder;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.UIManager;
+import com.facebook.react.fabric.ComponentFactory;
+import com.facebook.react.fabric.CoreComponentsRegistry;
+import com.facebook.react.fabric.EmptyReactNativeConfig;
+import com.facebook.react.fabric.FabricJSIModuleProvider;
+import com.facebook.react.uimanager.ViewManagerRegistry;
+import com.app.BuildConfig;
+import com.app.newarchitecture.components.MainComponentsRegistry;
+import com.app.newarchitecture.modules.MainApplicationTurboModuleManagerDelegate;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * A {@link ReactNativeHost} that helps you load everything needed for the New Architecture, both
+ * TurboModule delegates and the Fabric Renderer.
+ *
+ * <p>Please note that this class is used ONLY if you opt-in for the New Architecture (see the
+ * `newArchEnabled` property). Is ignored otherwise.
+ */
+public class MainApplicationReactNativeHost extends ReactNativeHost {
+  public MainApplicationReactNativeHost(Application application) {
+    super(application);
+  }
+
+  @Override
+  public boolean getUseDeveloperSupport() {
+    return BuildConfig.DEBUG;
+  }
+
+  @Override
+  protected List<ReactPackage> getPackages() {
+    List<ReactPackage> packages = new PackageList(this).getPackages();
+    // Packages that cannot be autolinked yet can be added manually here, for example:
+    //     packages.add(new MyReactNativePackage());
+    // TurboModules must also be loaded here providing a valid TurboReactPackage implementation:
+    //     packages.add(new TurboReactPackage() { ... });
+    // If you have custom Fabric Components, their ViewManagers should also be loaded here
+    // inside a ReactPackage.
+    return packages;
+  }
+
+  @Override
+  protected String getJSMainModuleName() {
+    return "index";
+  }
+
+  @NonNull
+  @Override
+  protected ReactPackageTurboModuleManagerDelegate.Builder
+      getReactPackageTurboModuleManagerDelegateBuilder() {
+    // Here we provide the ReactPackageTurboModuleManagerDelegate Builder. This is necessary
+    // for the new architecture and to use TurboModules correctly.
+    return new MainApplicationTurboModuleManagerDelegate.Builder();
+  }
+
+  @Override
+  protected JSIModulePackage getJSIModulePackage() {
+    return new JSIModulePackage() {
+      @Override
+      public List<JSIModuleSpec> getJSIModules(
+          final ReactApplicationContext reactApplicationContext,
+          final JavaScriptContextHolder jsContext) {
+        final List<JSIModuleSpec> specs = new ArrayList<>();
+
+        // Here we provide a new JSIModuleSpec that will be responsible of providing the
+        // custom Fabric Components.
+        specs.add(
+            new JSIModuleSpec() {
+              @Override
+              public JSIModuleType getJSIModuleType() {
+                return JSIModuleType.UIManager;
+              }
+
+              @Override
+              public JSIModuleProvider<UIManager> getJSIModuleProvider() {
+                final ComponentFactory componentFactory = new ComponentFactory();
+                CoreComponentsRegistry.register(componentFactory);
+
+                // Here we register a Components Registry.
+                // The one that is generated with the template contains no components
+                // and just provides you the one from React Native core.
+                MainComponentsRegistry.register(componentFactory);
+
+                final ReactInstanceManager reactInstanceManager = getReactInstanceManager();
+
+                ViewManagerRegistry viewManagerRegistry =
+                    new ViewManagerRegistry(
+                        reactInstanceManager.getOrCreateViewManagers(reactApplicationContext));
+
+                return new FabricJSIModuleProvider(
+                    reactApplicationContext,
+                    componentFactory,
+                    new EmptyReactNativeConfig(),
+                    viewManagerRegistry);
+              }
+            });
+        return specs;
+      }
+    };
+  }
+}

android/app/src/main/java/com/app/newarchitecture/components/MainComponentsRegistry.java

@@ -0,0 +1,36 @@
+package com.app.newarchitecture.components;
+
+import com.facebook.jni.HybridData;
+import com.facebook.proguard.annotations.DoNotStrip;
+import com.facebook.react.fabric.ComponentFactory;
+import com.facebook.soloader.SoLoader;
+
+/**
+ * Class responsible to load the custom Fabric Components. This class has native methods and needs a
+ * corresponding C++ implementation/header file to work correctly (already placed inside the jni/
+ * folder for you).
+ *
+ * <p>Please note that this class is used ONLY if you opt-in for the New Architecture (see the
+ * `newArchEnabled` property). Is ignored otherwise.
+ */
+@DoNotStrip
+public class MainComponentsRegistry {
+  static {
+    SoLoader.loadLibrary("fabricjni");
+  }
+
+  @DoNotStrip private final HybridData mHybridData;
+
+  @DoNotStrip
+  private native HybridData initHybrid(ComponentFactory componentFactory);
+
+  @DoNotStrip
+  private MainComponentsRegistry(ComponentFactory componentFactory) {
+    mHybridData = initHybrid(componentFactory);
+  }
+
+  @DoNotStrip
+  public static MainComponentsRegistry register(ComponentFactory componentFactory) {
+    return new MainComponentsRegistry(componentFactory);
+  }
+}

android/app/src/main/java/com/app/newarchitecture/modules/MainApplicationTurboModuleManagerDelegate.java

@@ -0,0 +1,48 @@
+package com.app.newarchitecture.modules;
+
+import com.facebook.jni.HybridData;
+import com.facebook.react.ReactPackage;
+import com.facebook.react.ReactPackageTurboModuleManagerDelegate;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.soloader.SoLoader;
+import java.util.List;
+
+/**
+ * Class responsible to load the TurboModules. This class has native methods and needs a
+ * corresponding C++ implementation/header file to work correctly (already placed inside the jni/
+ * folder for you).
+ *
+ * <p>Please note that this class is used ONLY if you opt-in for the New Architecture (see the
+ * `newArchEnabled` property). Is ignored otherwise.
+ */
+public class MainApplicationTurboModuleManagerDelegate
+    extends ReactPackageTurboModuleManagerDelegate {
+
+  private static volatile boolean sIsSoLibraryLoaded;
+
+  protected MainApplicationTurboModuleManagerDelegate(
+      ReactApplicationContext reactApplicationContext, List<ReactPackage> packages) {
+    super(reactApplicationContext, packages);
+  }
+
+  protected native HybridData initHybrid();
+
+  native boolean canCreateTurboModule(String moduleName);
+
+  public static class Builder extends ReactPackageTurboModuleManagerDelegate.Builder {
+    protected MainApplicationTurboModuleManagerDelegate build(
+        ReactApplicationContext context, List<ReactPackage> packages) {
+      return new MainApplicationTurboModuleManagerDelegate(context, packages);
+    }
+  }
+
+  @Override
+  protected synchronized void maybeLoadOtherSoLibraries() {
+    if (!sIsSoLibraryLoaded) {
+      // If you change the name of your application .so file in the Android.mk file,
+      // make sure you update the name here as well.
+      SoLoader.loadLibrary("app_appmodules");
+      sIsSoLibraryLoaded = true;
+    }
+  }
+}

android/app/src/main/jni/Android.mk

@@ -0,0 +1,49 @@
+THIS_DIR := $(call my-dir)
+
+include $(REACT_ANDROID_DIR)/Android-prebuilt.mk
+
+# If you wish to add a custom TurboModule or Fabric component in your app you
+# will have to include the following autogenerated makefile.
+# include $(GENERATED_SRC_DIR)/codegen/jni/Android.mk
+include $(CLEAR_VARS)
+
+LOCAL_PATH := $(THIS_DIR)
+
+# You can customize the name of your application .so file here.
+LOCAL_MODULE := app_appmodules
+
+LOCAL_C_INCLUDES := $(LOCAL_PATH)
+LOCAL_SRC_FILES := $(wildcard $(LOCAL_PATH)/*.cpp)
+LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)
+
+# If you wish to add a custom TurboModule or Fabric component in your app you
+# will have to uncomment those lines to include the generated source 
+# files from the codegen (placed in $(GENERATED_SRC_DIR)/codegen/jni)
+#
+# LOCAL_C_INCLUDES += $(GENERATED_SRC_DIR)/codegen/jni
+# LOCAL_SRC_FILES += $(wildcard $(GENERATED_SRC_DIR)/codegen/jni/*.cpp)
+# LOCAL_EXPORT_C_INCLUDES += $(GENERATED_SRC_DIR)/codegen/jni
+
+# Here you should add any native library you wish to depend on.
+LOCAL_SHARED_LIBRARIES := \
+  libfabricjni \
+  libfbjni \
+  libfolly_futures \
+  libfolly_json \
+  libglog \
+  libjsi \
+  libreact_codegen_rncore \
+  libreact_debug \
+  libreact_nativemodule_core \
+  libreact_render_componentregistry \
+  libreact_render_core \
+  libreact_render_debug \
+  libreact_render_graphics \
+  librrc_view \
+  libruntimeexecutor \
+  libturbomodulejsijni \
+  libyoga
+
+LOCAL_CFLAGS := -DLOG_TAG=\"ReactNative\" -fexceptions -frtti -std=c++17 -Wall
+
+include $(BUILD_SHARED_LIBRARY)

android/app/src/main/jni/MainApplicationModuleProvider.cpp

@@ -0,0 +1,24 @@
+#include "MainApplicationModuleProvider.h"
+
+#include <rncore.h>
+
+namespace facebook {
+namespace react {
+
+std::shared_ptr<TurboModule> MainApplicationModuleProvider(
+    const std::string moduleName,
+    const JavaTurboModule::InitParams &params) {
+  // Here you can provide your own module provider for TurboModules coming from
+  // either your application or from external libraries. The approach to follow
+  // is similar to the following (for a library called `samplelibrary`:
+  //
+  // auto module = samplelibrary_ModuleProvider(moduleName, params);
+  // if (module != nullptr) {
+  //    return module;
+  // }
+  // return rncore_ModuleProvider(moduleName, params);
+  return rncore_ModuleProvider(moduleName, params);
+}
+
+} // namespace react
+} // namespace facebook

android/app/src/main/jni/MainApplicationModuleProvider.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <memory>
+#include <string>
+
+#include <ReactCommon/JavaTurboModule.h>
+
+namespace facebook {
+namespace react {
+
+std::shared_ptr<TurboModule> MainApplicationModuleProvider(
+    const std::string moduleName,
+    const JavaTurboModule::InitParams &params);
+
+} // namespace react
+} // namespace facebook

android/app/src/main/jni/MainApplicationTurboModuleManagerDelegate.cpp

@@ -0,0 +1,45 @@
+#include "MainApplicationTurboModuleManagerDelegate.h"
+#include "MainApplicationModuleProvider.h"
+
+namespace facebook {
+namespace react {
+
+jni::local_ref<MainApplicationTurboModuleManagerDelegate::jhybriddata>
+MainApplicationTurboModuleManagerDelegate::initHybrid(
+    jni::alias_ref<jhybridobject>) {
+  return makeCxxInstance();
+}
+
+void MainApplicationTurboModuleManagerDelegate::registerNatives() {
+  registerHybrid({
+      makeNativeMethod(
+          "initHybrid", MainApplicationTurboModuleManagerDelegate::initHybrid),
+      makeNativeMethod(
+          "canCreateTurboModule",
+          MainApplicationTurboModuleManagerDelegate::canCreateTurboModule),
+  });
+}
+
+std::shared_ptr<TurboModule>
+MainApplicationTurboModuleManagerDelegate::getTurboModule(
+    const std::string name,
+    const std::shared_ptr<CallInvoker> jsInvoker) {
+  // Not implemented yet: provide pure-C++ NativeModules here.
+  return nullptr;
+}
+
+std::shared_ptr<TurboModule>
+MainApplicationTurboModuleManagerDelegate::getTurboModule(
+    const std::string name,
+    const JavaTurboModule::InitParams &params) {
+  return MainApplicationModuleProvider(name, params);
+}
+
+bool MainApplicationTurboModuleManagerDelegate::canCreateTurboModule(
+    std::string name) {
+  return getTurboModule(name, nullptr) != nullptr ||
+      getTurboModule(name, {.moduleName = name}) != nullptr;
+}
+
+} // namespace react
+} // namespace facebook

android/app/src/main/jni/MainApplicationTurboModuleManagerDelegate.h

@@ -0,0 +1,38 @@
+#include <memory>
+#include <string>
+
+#include <ReactCommon/TurboModuleManagerDelegate.h>
+#include <fbjni/fbjni.h>
+
+namespace facebook {
+namespace react {
+
+class MainApplicationTurboModuleManagerDelegate
+    : public jni::HybridClass<
+          MainApplicationTurboModuleManagerDelegate,
+          TurboModuleManagerDelegate> {
+ public:
+  // Adapt it to the package you used for your Java class.
+  static constexpr auto kJavaDescriptor =
+      "Lcom/app/newarchitecture/modules/MainApplicationTurboModuleManagerDelegate;";
+
+  static jni::local_ref<jhybriddata> initHybrid(jni::alias_ref<jhybridobject>);
+
+  static void registerNatives();
+
+  std::shared_ptr<TurboModule> getTurboModule(
+      const std::string name,
+      const std::shared_ptr<CallInvoker> jsInvoker) override;
+  std::shared_ptr<TurboModule> getTurboModule(
+      const std::string name,
+      const JavaTurboModule::InitParams &params) override;
+
+  /**
+   * Test-only method. Allows user to verify whether a TurboModule can be
+   * created by instances of this class.
+   */
+  bool canCreateTurboModule(std::string name);
+};
+
+} // namespace react
+} // namespace facebook

android/app/src/main/jni/MainComponentsRegistry.cpp

@@ -0,0 +1,61 @@
+#include "MainComponentsRegistry.h"
+
+#include <CoreComponentsRegistry.h>
+#include <fbjni/fbjni.h>
+#include <react/renderer/componentregistry/ComponentDescriptorProviderRegistry.h>
+#include <react/renderer/components/rncore/ComponentDescriptors.h>
+
+namespace facebook {
+namespace react {
+
+MainComponentsRegistry::MainComponentsRegistry(ComponentFactory *delegate) {}
+
+std::shared_ptr<ComponentDescriptorProviderRegistry const>
+MainComponentsRegistry::sharedProviderRegistry() {
+  auto providerRegistry = CoreComponentsRegistry::sharedProviderRegistry();
+
+  // Custom Fabric Components go here. You can register custom
+  // components coming from your App or from 3rd party libraries here.
+  //
+  // providerRegistry->add(concreteComponentDescriptorProvider<
+  //        AocViewerComponentDescriptor>());
+  return providerRegistry;
+}
+
+jni::local_ref<MainComponentsRegistry::jhybriddata>
+MainComponentsRegistry::initHybrid(
+    jni::alias_ref<jclass>,
+    ComponentFactory *delegate) {
+  auto instance = makeCxxInstance(delegate);
+
+  auto buildRegistryFunction =
+      [](EventDispatcher::Weak const &eventDispatcher,
+         ContextContainer::Shared const &contextContainer)
+      -> ComponentDescriptorRegistry::Shared {
+    auto registry = MainComponentsRegistry::sharedProviderRegistry()
+                        ->createComponentDescriptorRegistry(
+                            {eventDispatcher, contextContainer});
+
+    auto mutableRegistry =
+        std::const_pointer_cast<ComponentDescriptorRegistry>(registry);
+
+    mutableRegistry->setFallbackComponentDescriptor(
+        std::make_shared<UnimplementedNativeViewComponentDescriptor>(
+            ComponentDescriptorParameters{
+                eventDispatcher, contextContainer, nullptr}));
+
+    return registry;
+  };
+
+  delegate->buildRegistryFunction = buildRegistryFunction;
+  return instance;
+}
+
+void MainComponentsRegistry::registerNatives() {
+  registerHybrid({
+      makeNativeMethod("initHybrid", MainComponentsRegistry::initHybrid),
+  });
+}
+
+} // namespace react
+} // namespace facebook

android/app/src/main/jni/MainComponentsRegistry.h

@@ -0,0 +1,32 @@
+#pragma once
+
+#include <ComponentFactory.h>
+#include <fbjni/fbjni.h>
+#include <react/renderer/componentregistry/ComponentDescriptorProviderRegistry.h>
+#include <react/renderer/componentregistry/ComponentDescriptorRegistry.h>
+
+namespace facebook {
+namespace react {
+
+class MainComponentsRegistry
+    : public facebook::jni::HybridClass<MainComponentsRegistry> {
+ public:
+  // Adapt it to the package you used for your Java class.
+  constexpr static auto kJavaDescriptor =
+      "Lcom/app/newarchitecture/components/MainComponentsRegistry;";
+
+  static void registerNatives();
+
+  MainComponentsRegistry(ComponentFactory *delegate);
+
+ private:
+  static std::shared_ptr<ComponentDescriptorProviderRegistry const>
+  sharedProviderRegistry();
+
+  static jni::local_ref<jhybriddata> initHybrid(
+      jni::alias_ref<jclass>,
+      ComponentFactory *delegate);
+};
+
+} // namespace react
+} // namespace facebook

android/app/src/main/jni/OnLoad.cpp

@@ -0,0 +1,11 @@
+#include <fbjni/fbjni.h>
+#include "MainApplicationTurboModuleManagerDelegate.h"
+#include "MainComponentsRegistry.h"
+
+JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM *vm, void *) {
+  return facebook::jni::initialize(vm, [] {
+    facebook::react::MainApplicationTurboModuleManagerDelegate::
+        registerNatives();
+    facebook::react::MainComponentsRegistry::registerNatives();
+  });
+}

android/app/src/main/res/drawable/rn_edit_text_material.xml

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2014 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<inset xmlns:android="http://schemas.android.com/apk/res/android"
+       android:insetLeft="@dimen/abc_edit_text_inset_horizontal_material"
+       android:insetRight="@dimen/abc_edit_text_inset_horizontal_material"
+       android:insetTop="@dimen/abc_edit_text_inset_top_material"
+       android:insetBottom="@dimen/abc_edit_text_inset_bottom_material">
+
+    <selector>
+        <!-- 
+          This file is a copy of abc_edit_text_material (https://bit.ly/3k8fX7I).
+          The item below with state_pressed="false" and state_focused="false" causes a NullPointerException.
+          NullPointerException:tempt to invoke virtual method 'android.graphics.drawable.Drawable android.graphics.drawable.Drawable$ConstantState.newDrawable(android.content.res.Resources)'
+
+          <item android:state_pressed="false" android:state_focused="false" android:drawable="@drawable/abc_textfield_default_mtrl_alpha"/>
+
+          For more info, see https://bit.ly/3CdLStv (react-native/pull/29452) and https://bit.ly/3nxOMoR.
+        -->
+        <item android:state_enabled="false" android:drawable="@drawable/abc_textfield_default_mtrl_alpha"/>
+        <item android:drawable="@drawable/abc_textfield_activated_mtrl_alpha"/>
+    </selector>
+
+</inset>

android/app/src/main/res/values/strings.xml

@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">app</string>
+</resources>

android/app/src/main/res/values/styles.xml

@@ -0,0 +1,9 @@
+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.DayNight.NoActionBar">
+        <!-- Customize your theme here. -->
+        <item name="android:editTextBackground">@drawable/rn_edit_text_material</item>
+    </style>
+
+</resources>