Check in OSS NativeModule specs

Summary:
This diff checks in the output from `fbsource//xplat/js:FBReactNativeSpec-flow-type-android-files` into `react-native-github/ReactAndroid/src/main/java/com/facebook/fbreact/specs/`.

To update the codegen output, please run:
```
js1 build oss-native-modules-specs -p android
```

To use the codegen, add the following as a buck dep to your target:
```
fbsource//xplat/js/react-native-github/ReactAndroid/src/main/java/com/facebook/fbreact/specs:FBReactNativeSpecAndroid
```

Changelog: [Android][Added] Check in TurboModules codegen

Reviewed By: fkgozali

Differential Revision: D17990380

fbshipit-source-id: 94895e375311e9360c308dffadf1558a5ff04212

ReactAndroid/src/main/java/com/facebook/fbreact/specs/BUCK

@@ -0,0 +1,16 @@
+load("@fbsource//tools/build_defs/oss:rn_defs.bzl", "react_native_target", "rn_android_library")
+
+rn_android_library(
+    name = "FBReactNativeSpec",
+    srcs = glob(["*.java"]),
+    visibility = ["PUBLIC"],
+    deps = [
+        "//fbandroid/third-party/java/jsr-305:jsr-305",
+        "//fbandroid/third-party/java/jsr-330:jsr-330",
+        react_native_target("java/com/facebook/react/bridge:bridge"),
+        react_native_target("java/com/facebook/react/common:common"),
+    ],
+    exported_deps = [
+        react_native_target("java/com/facebook/react/turbomodule/core/interfaces:interfaces"),
+    ],
+)

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeAccessibilityInfoSpec.java

@@ -0,0 +1,38 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeAccessibilityInfoSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeAccessibilityInfoSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void isTouchExplorationEnabled(Callback onSuccess);
+
+  @ReactMethod
+  public abstract void setAccessibilityFocus(double reactTag);
+
+  @ReactMethod
+  public abstract void isReduceMotionEnabled(Callback onSuccess);
+
+  @ReactMethod
+  public abstract void announceForAccessibility(String announcement);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeAccessibilityManagerSpec.java

@@ -0,0 +1,54 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeAccessibilityManagerSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeAccessibilityManagerSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void getCurrentReduceMotionState(Callback onSuccess, Callback onError);
+
+  @ReactMethod
+  public abstract void getCurrentReduceTransparencyState(Callback onSuccess, Callback onError);
+
+  @ReactMethod
+  public abstract void getCurrentInvertColorsState(Callback onSuccess, Callback onError);
+
+  @ReactMethod
+  public abstract void getCurrentGrayscaleState(Callback onSuccess, Callback onError);
+
+  @ReactMethod
+  public abstract void getCurrentBoldTextState(Callback onSuccess, Callback onError);
+
+  @ReactMethod
+  public abstract void setAccessibilityFocus(double reactTag);
+
+  @ReactMethod
+  public abstract void getCurrentVoiceOverState(Callback onSuccess, Callback onError);
+
+  @ReactMethod
+  public abstract void announceForAccessibility(String announcement);
+
+  @ReactMethod
+  public abstract void setAccessibilityContentSizeMultipliers(ReadableMap JSMultipliers);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeActionSheetManagerSpec.java

@@ -0,0 +1,34 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeActionSheetManagerSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeActionSheetManagerSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void showActionSheetWithOptions(ReadableMap options, Callback callback);
+
+  @ReactMethod
+  public abstract void showShareActionSheetWithOptions(ReadableMap options,
+      Callback failureCallback, Callback successCallback);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeAlertManagerSpec.java

@@ -0,0 +1,30 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeAlertManagerSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeAlertManagerSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void alertWithArgs(ReadableMap args, Callback callback);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeAnimatedModuleSpec.java

@@ -0,0 +1,84 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeAnimatedModuleSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeAnimatedModuleSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void dropAnimatedNode(double tag);
+
+  @ReactMethod
+  public abstract void connectAnimatedNodes(double parentTag, double childTag);
+
+  @ReactMethod
+  public abstract void stopAnimation(double animationId);
+
+  @ReactMethod
+  public abstract void removeListeners(double count);
+
+  @ReactMethod
+  public abstract void disconnectAnimatedNodeFromView(double nodeTag, double viewTag);
+
+  @ReactMethod
+  public abstract void removeAnimatedEventFromView(double viewTag, String eventName,
+      double animatedNodeTag);
+
+  @ReactMethod
+  public abstract void flattenAnimatedNodeOffset(double nodeTag);
+
+  @ReactMethod
+  public abstract void extractAnimatedNodeOffset(double nodeTag);
+
+  @ReactMethod
+  public abstract void disconnectAnimatedNodes(double parentTag, double childTag);
+
+  @ReactMethod
+  public abstract void setAnimatedNodeValue(double nodeTag, double value);
+
+  @ReactMethod
+  public abstract void setAnimatedNodeOffset(double nodeTag, double offset);
+
+  @ReactMethod
+  public abstract void startAnimatingNode(double animationId, double nodeTag, ReadableMap config,
+      Callback endCallback);
+
+  @ReactMethod
+  public abstract void stopListeningToAnimatedNodeValue(double tag);
+
+  @ReactMethod
+  public abstract void addAnimatedEventToView(double viewTag, String eventName,
+      ReadableMap eventMapping);
+
+  @ReactMethod
+  public abstract void createAnimatedNode(double tag, ReadableMap config);
+
+  @ReactMethod
+  public abstract void startListeningToAnimatedNodeValue(double tag);
+
+  @ReactMethod
+  public abstract void connectAnimatedNodeToView(double nodeTag, double viewTag);
+
+  @ReactMethod
+  public abstract void addListener(String eventName);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeAnimationsDebugModuleSpec.java

@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeAnimationsDebugModuleSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeAnimationsDebugModuleSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void startRecordingFps();
+
+  @ReactMethod
+  public abstract void stopRecordingFps(double animationStopTimeMs);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeAppStateSpec.java

@@ -0,0 +1,66 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.common.build.ReactBuildConfig;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import javax.annotation.Nullable;
+
+public abstract class NativeAppStateSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeAppStateSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void removeListeners(double count);
+
+  @ReactMethod
+  public abstract void getCurrentAppState(Callback success, Callback failure);
+
+  @ReactMethod
+  public abstract void addListener(String eventName);
+
+  protected abstract Map<String, Object> getTypedExportedConstants();
+
+  @Override
+  public final @Nullable Map<String, Object> getConstants() {
+    Map<String, Object> constants = getTypedExportedConstants();
+    if (ReactBuildConfig.DEBUG || ReactBuildConfig.IS_INTERNAL_BUILD) {
+      Set<String> obligatoryFlowConstants = new HashSet<>(Arrays.asList(
+          "initialAppState"
+      ));
+      Set<String> optionalFlowConstants = new HashSet<>();
+      Set<String> undeclaredConstants = new HashSet<>(constants.keySet());
+      undeclaredConstants.removeAll(obligatoryFlowConstants);
+      undeclaredConstants.removeAll(optionalFlowConstants);
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module Flow doesn't declare constants: %s", undeclaredConstants));
+      }
+      undeclaredConstants = obligatoryFlowConstants;
+      undeclaredConstants.removeAll(constants.keySet());
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module doesn't fill in constants: %s", undeclaredConstants));
+      }
+    }
+    return constants;
+  }
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeAppearanceSpec.java

@@ -0,0 +1,37 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+import javax.annotation.Nullable;
+
+public abstract class NativeAppearanceSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeAppearanceSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void removeListeners(double count);
+
+  @ReactMethod
+  public abstract void addListener(String eventName);
+
+  @ReactMethod(
+      isBlockingSynchronousMethod = true
+  )
+  public abstract @Nullable String getColorScheme();
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeAsyncStorageSpec.java

@@ -0,0 +1,45 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeAsyncStorageSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeAsyncStorageSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void multiSet(ReadableArray kvPairs, Callback callback);
+
+  @ReactMethod
+  public abstract void getAllKeys(Callback callback);
+
+  @ReactMethod
+  public abstract void multiGet(ReadableArray keys, Callback callback);
+
+  @ReactMethod
+  public abstract void clear(Callback callback);
+
+  @ReactMethod
+  public abstract void multiMerge(ReadableArray kvPairs, Callback callback);
+
+  @ReactMethod
+  public abstract void multiRemove(ReadableArray keys, Callback callback);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeBlobModuleSpec.java

@@ -0,0 +1,78 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.common.build.ReactBuildConfig;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import javax.annotation.Nullable;
+
+public abstract class NativeBlobModuleSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeBlobModuleSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void sendOverSocket(ReadableMap blob, double socketID);
+
+  @ReactMethod
+  public abstract void addNetworkingHandler();
+
+  @ReactMethod
+  public abstract void createFromParts(ReadableArray parts, String withId);
+
+  @ReactMethod
+  public abstract void addWebSocketHandler(double id);
+
+  @ReactMethod
+  public abstract void release(String blobId);
+
+  @ReactMethod
+  public abstract void removeWebSocketHandler(double id);
+
+  protected abstract Map<String, Object> getTypedExportedConstants();
+
+  @Override
+  public final @Nullable Map<String, Object> getConstants() {
+    Map<String, Object> constants = getTypedExportedConstants();
+    if (ReactBuildConfig.DEBUG || ReactBuildConfig.IS_INTERNAL_BUILD) {
+      Set<String> obligatoryFlowConstants = new HashSet<>(Arrays.asList(
+          "BLOB_URI_SCHEME"
+      ));
+      Set<String> optionalFlowConstants = new HashSet<>(Arrays.asList(
+          "BLOB_URI_HOST"
+      ));
+      Set<String> undeclaredConstants = new HashSet<>(constants.keySet());
+      undeclaredConstants.removeAll(obligatoryFlowConstants);
+      undeclaredConstants.removeAll(optionalFlowConstants);
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module Flow doesn't declare constants: %s", undeclaredConstants));
+      }
+      undeclaredConstants = obligatoryFlowConstants;
+      undeclaredConstants.removeAll(constants.keySet());
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module doesn't fill in constants: %s", undeclaredConstants));
+      }
+    }
+    return constants;
+  }
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeBugReportingSpec.java

@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeBugReportingSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeBugReportingSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void startReportAProblemFlow();
+
+  @ReactMethod
+  public abstract void setCategoryID(String categoryID);
+
+  @ReactMethod
+  public abstract void setExtraData(ReadableMap extraData, ReadableMap extraFiles);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeClipboardSpec.java

@@ -0,0 +1,32 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Promise;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeClipboardSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeClipboardSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void setString(String content);
+
+  @ReactMethod
+  public abstract void getString(Promise promise);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeDatePickerAndroidSpec.java

@@ -0,0 +1,30 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Promise;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeDatePickerAndroidSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeDatePickerAndroidSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void open(ReadableMap options, Promise promise);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeDevLoadingViewSpec.java

@@ -0,0 +1,32 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeDevLoadingViewSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeDevLoadingViewSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void hide();
+
+  @ReactMethod
+  public abstract void showMessage(String message, ReadableMap color, ReadableMap backgroundColor);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeDevSettingsSpec.java

@@ -0,0 +1,54 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeDevSettingsSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeDevSettingsSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void setIsDebuggingRemotely(boolean isDebuggingRemotelyEnabled);
+
+  @ReactMethod
+  public void onFastRefresh() {
+  }
+
+  @ReactMethod
+  public abstract void reload();
+
+  @ReactMethod
+  public abstract void setProfilingEnabled(boolean isProfilingEnabled);
+
+  @ReactMethod
+  public abstract void addMenuItem(String title);
+
+  @ReactMethod
+  public abstract void toggleElementInspector();
+
+  @ReactMethod
+  public abstract void setHotLoadingEnabled(boolean isHotLoadingEnabled);
+
+  @ReactMethod
+  public void reloadWithReason(String reason) {
+  }
+
+  @ReactMethod
+  public abstract void setIsShakeToShowDevMenuEnabled(boolean enabled);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeDeviceEventManagerSpec.java

@@ -0,0 +1,28 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeDeviceEventManagerSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeDeviceEventManagerSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void invokeDefaultBackPressHandler();
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeDeviceInfoSpec.java

@@ -0,0 +1,57 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.common.build.ReactBuildConfig;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import javax.annotation.Nullable;
+
+public abstract class NativeDeviceInfoSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeDeviceInfoSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  protected abstract Map<String, Object> getTypedExportedConstants();
+
+  @Override
+  public final @Nullable Map<String, Object> getConstants() {
+    Map<String, Object> constants = getTypedExportedConstants();
+    if (ReactBuildConfig.DEBUG || ReactBuildConfig.IS_INTERNAL_BUILD) {
+      Set<String> obligatoryFlowConstants = new HashSet<>(Arrays.asList(
+          "Dimensions"
+      ));
+      Set<String> optionalFlowConstants = new HashSet<>(Arrays.asList(
+          "isIPhoneX_deprecated"
+      ));
+      Set<String> undeclaredConstants = new HashSet<>(constants.keySet());
+      undeclaredConstants.removeAll(obligatoryFlowConstants);
+      undeclaredConstants.removeAll(optionalFlowConstants);
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module Flow doesn't declare constants: %s", undeclaredConstants));
+      }
+      undeclaredConstants = obligatoryFlowConstants;
+      undeclaredConstants.removeAll(constants.keySet());
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module doesn't fill in constants: %s", undeclaredConstants));
+      }
+    }
+    return constants;
+  }
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeDialogManagerAndroidSpec.java

@@ -0,0 +1,65 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.common.build.ReactBuildConfig;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import javax.annotation.Nullable;
+
+public abstract class NativeDialogManagerAndroidSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeDialogManagerAndroidSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void showAlert(ReadableMap config, Callback onError, Callback onAction);
+
+  protected abstract Map<String, Object> getTypedExportedConstants();
+
+  @Override
+  public final @Nullable Map<String, Object> getConstants() {
+    Map<String, Object> constants = getTypedExportedConstants();
+    if (ReactBuildConfig.DEBUG || ReactBuildConfig.IS_INTERNAL_BUILD) {
+      Set<String> obligatoryFlowConstants = new HashSet<>(Arrays.asList(
+          "buttonNeutral",
+          "buttonClicked",
+          "dismissed",
+          "buttonNegative",
+          "buttonPositive"
+      ));
+      Set<String> optionalFlowConstants = new HashSet<>();
+      Set<String> undeclaredConstants = new HashSet<>(constants.keySet());
+      undeclaredConstants.removeAll(obligatoryFlowConstants);
+      undeclaredConstants.removeAll(optionalFlowConstants);
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module Flow doesn't declare constants: %s", undeclaredConstants));
+      }
+      undeclaredConstants = obligatoryFlowConstants;
+      undeclaredConstants.removeAll(constants.keySet());
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module doesn't fill in constants: %s", undeclaredConstants));
+      }
+    }
+    return constants;
+  }
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeExceptionsManagerSpec.java

@@ -0,0 +1,46 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeExceptionsManagerSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeExceptionsManagerSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public void dismissRedbox() {
+  }
+
+  @ReactMethod
+  public abstract void updateExceptionMessage(String message, ReadableArray stack,
+      double exceptionId);
+
+  @ReactMethod
+  public void reportException(ReadableMap data) {
+  }
+
+  @ReactMethod
+  public abstract void reportFatalException(String message, ReadableArray stack,
+      double exceptionId);
+
+  @ReactMethod
+  public abstract void reportSoftException(String message, ReadableArray stack, double exceptionId);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeFileReaderModuleSpec.java

@@ -0,0 +1,33 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Promise;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeFileReaderModuleSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeFileReaderModuleSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void readAsDataURL(ReadableMap data, Promise promise);
+
+  @ReactMethod
+  public abstract void readAsText(ReadableMap data, String encoding, Promise promise);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeFrameRateLoggerSpec.java

@@ -0,0 +1,38 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeFrameRateLoggerSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeFrameRateLoggerSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void endScroll();
+
+  @ReactMethod
+  public abstract void beginScroll();
+
+  @ReactMethod
+  public abstract void setContext(String context);
+
+  @ReactMethod
+  public abstract void setGlobalOptions(ReadableMap options);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeHeadlessJsTaskSupportSpec.java

@@ -0,0 +1,32 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Promise;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeHeadlessJsTaskSupportSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeHeadlessJsTaskSupportSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void notifyTaskFinished(double taskId);
+
+  @ReactMethod
+  public abstract void notifyTaskRetry(double taskId, Promise promise);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeHeapCaptureSpec.java

@@ -0,0 +1,32 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+import javax.annotation.Nullable;
+
+public abstract class NativeHeapCaptureSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeHeapCaptureSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void captureComplete(String path, @Nullable String error);
+
+  @ReactMethod
+  public abstract void captureHeap(String path);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeI18nManagerSpec.java

@@ -0,0 +1,66 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.common.build.ReactBuildConfig;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import javax.annotation.Nullable;
+
+public abstract class NativeI18nManagerSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeI18nManagerSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void allowRTL(boolean allowRTL);
+
+  @ReactMethod
+  public abstract void forceRTL(boolean forceRTL);
+
+  @ReactMethod
+  public abstract void swapLeftAndRightInRTL(boolean flipStyles);
+
+  protected abstract Map<String, Object> getTypedExportedConstants();
+
+  @Override
+  public final @Nullable Map<String, Object> getConstants() {
+    Map<String, Object> constants = getTypedExportedConstants();
+    if (ReactBuildConfig.DEBUG || ReactBuildConfig.IS_INTERNAL_BUILD) {
+      Set<String> obligatoryFlowConstants = new HashSet<>(Arrays.asList(
+          "doLeftAndRightSwapInRTL",
+          "isRTL"
+      ));
+      Set<String> optionalFlowConstants = new HashSet<>();
+      Set<String> undeclaredConstants = new HashSet<>(constants.keySet());
+      undeclaredConstants.removeAll(obligatoryFlowConstants);
+      undeclaredConstants.removeAll(optionalFlowConstants);
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module Flow doesn't declare constants: %s", undeclaredConstants));
+      }
+      undeclaredConstants = obligatoryFlowConstants;
+      undeclaredConstants.removeAll(constants.keySet());
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module doesn't fill in constants: %s", undeclaredConstants));
+      }
+    }
+    return constants;
+  }
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeImageLoaderSpec.java

@@ -0,0 +1,40 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Promise;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeImageLoaderSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeImageLoaderSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void getSize(String uri, Promise promise);
+
+  @ReactMethod
+  public abstract void prefetchImage(String uri, Promise promise);
+
+  @ReactMethod
+  public abstract void queryCache(ReadableArray uris, Promise promise);
+
+  @ReactMethod
+  public abstract void getSizeWithHeaders(String uri, ReadableMap headers, Promise promise);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeImagePickerIOSSpec.java

@@ -0,0 +1,47 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeImagePickerIOSSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeImagePickerIOSSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void openCameraDialog(ReadableMap config, Callback successCallback,
+      Callback cancelCallback);
+
+  @ReactMethod
+  public abstract void openSelectDialog(ReadableMap config, Callback successCallback,
+      Callback cancelCallback);
+
+  @ReactMethod
+  public abstract void canUseCamera(Callback callback);
+
+  @ReactMethod
+  public abstract void canRecordVideos(Callback callback);
+
+  @ReactMethod
+  public abstract void clearAllPendingVideos();
+
+  @ReactMethod
+  public abstract void removePendingVideo(String url);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeJSCSamplingProfilerSpec.java

@@ -0,0 +1,30 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+import javax.annotation.Nullable;
+
+public abstract class NativeJSCSamplingProfilerSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeJSCSamplingProfilerSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void operationComplete(double token, @Nullable String result,
+      @Nullable String error);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeJSDevSupportSpec.java

@@ -0,0 +1,64 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.common.build.ReactBuildConfig;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import javax.annotation.Nullable;
+
+public abstract class NativeJSDevSupportSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeJSDevSupportSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void onFailure(double errorCode, String error);
+
+  @ReactMethod
+  public abstract void onSuccess(ReadableMap data);
+
+  protected abstract Map<String, Object> getTypedExportedConstants();
+
+  @Override
+  public final @Nullable Map<String, Object> getConstants() {
+    Map<String, Object> constants = getTypedExportedConstants();
+    if (ReactBuildConfig.DEBUG || ReactBuildConfig.IS_INTERNAL_BUILD) {
+      Set<String> obligatoryFlowConstants = new HashSet<>(Arrays.asList(
+          "ERROR_CODE_EXCEPTION",
+          "ERROR_CODE_VIEW_NOT_FOUND"
+      ));
+      Set<String> optionalFlowConstants = new HashSet<>();
+      Set<String> undeclaredConstants = new HashSet<>(constants.keySet());
+      undeclaredConstants.removeAll(obligatoryFlowConstants);
+      undeclaredConstants.removeAll(optionalFlowConstants);
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module Flow doesn't declare constants: %s", undeclaredConstants));
+      }
+      undeclaredConstants = obligatoryFlowConstants;
+      undeclaredConstants.removeAll(constants.keySet());
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module doesn't fill in constants: %s", undeclaredConstants));
+      }
+    }
+    return constants;
+  }
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeKeyboardObserverSpec.java

@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeKeyboardObserverSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeKeyboardObserverSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void removeListeners(double count);
+
+  @ReactMethod
+  public abstract void addListener(String eventName);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeLinkingSpec.java

@@ -0,0 +1,48 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Promise;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeLinkingSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeLinkingSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void sendIntent(String action, ReadableArray extras, Promise promise);
+
+  @ReactMethod
+  public abstract void openURL(String url, Promise promise);
+
+  @ReactMethod
+  public abstract void removeListeners(double count);
+
+  @ReactMethod
+  public abstract void canOpenURL(String url, Promise promise);
+
+  @ReactMethod
+  public abstract void getInitialURL(Promise promise);
+
+  @ReactMethod
+  public abstract void openSettings(Promise promise);
+
+  @ReactMethod
+  public abstract void addListener(String eventName);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeModalManagerSpec.java

@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeModalManagerSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeModalManagerSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void removeListeners(double count);
+
+  @ReactMethod
+  public abstract void addListener(String eventName);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeNetworkingAndroidSpec.java

@@ -0,0 +1,45 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeNetworkingAndroidSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeNetworkingAndroidSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void abortRequest(double requestId);
+
+  @ReactMethod
+  public abstract void removeListeners(double count);
+
+  @ReactMethod
+  public abstract void clearCookies(Callback callback);
+
+  @ReactMethod
+  public abstract void sendRequest(String method, String url, double requestId,
+      ReadableArray headers, ReadableMap data, ReadableMap responseType,
+      boolean useIncrementalUpdates, double timeout, boolean withCredentials);
+
+  @ReactMethod
+  public abstract void addListener(String eventName);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeNetworkingIOSSpec.java

@@ -0,0 +1,42 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeNetworkingIOSSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeNetworkingIOSSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void abortRequest(double requestId);
+
+  @ReactMethod
+  public abstract void removeListeners(double count);
+
+  @ReactMethod
+  public abstract void clearCookies(Callback callback);
+
+  @ReactMethod
+  public abstract void sendRequest(ReadableMap query, Callback callback);
+
+  @ReactMethod
+  public abstract void addListener(String eventName);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativePermissionsAndroidSpec.java

@@ -0,0 +1,39 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Promise;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativePermissionsAndroidSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativePermissionsAndroidSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void requestPermission(String permission, Promise promise);
+
+  @ReactMethod
+  public abstract void checkPermission(String permission, Promise promise);
+
+  @ReactMethod
+  public abstract void shouldShowRequestPermissionRationale(String permission, Promise promise);
+
+  @ReactMethod
+  public abstract void requestMultiplePermissions(ReadableArray permissions, Promise promise);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativePlatformConstantsAndroidSpec.java

@@ -0,0 +1,69 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.common.build.ReactBuildConfig;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import javax.annotation.Nullable;
+
+public abstract class NativePlatformConstantsAndroidSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativePlatformConstantsAndroidSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod(
+      isBlockingSynchronousMethod = true
+  )
+  public abstract String getAndroidID();
+
+  protected abstract Map<String, Object> getTypedExportedConstants();
+
+  @Override
+  public final @Nullable Map<String, Object> getConstants() {
+    Map<String, Object> constants = getTypedExportedConstants();
+    if (ReactBuildConfig.DEBUG || ReactBuildConfig.IS_INTERNAL_BUILD) {
+      Set<String> obligatoryFlowConstants = new HashSet<>(Arrays.asList(
+          "Serial",
+          "Fingerprint",
+          "uiMode",
+          "Version",
+          "reactNativeVersion",
+          "Model",
+          "ServerHost",
+          "isTesting",
+          "Release"
+      ));
+      Set<String> optionalFlowConstants = new HashSet<>();
+      Set<String> undeclaredConstants = new HashSet<>(constants.keySet());
+      undeclaredConstants.removeAll(obligatoryFlowConstants);
+      undeclaredConstants.removeAll(optionalFlowConstants);
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module Flow doesn't declare constants: %s", undeclaredConstants));
+      }
+      undeclaredConstants = obligatoryFlowConstants;
+      undeclaredConstants.removeAll(constants.keySet());
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module doesn't fill in constants: %s", undeclaredConstants));
+      }
+    }
+    return constants;
+  }
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativePlatformConstantsIOSSpec.java

@@ -0,0 +1,60 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.common.build.ReactBuildConfig;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import javax.annotation.Nullable;
+
+public abstract class NativePlatformConstantsIOSSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativePlatformConstantsIOSSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  protected abstract Map<String, Object> getTypedExportedConstants();
+
+  @Override
+  public final @Nullable Map<String, Object> getConstants() {
+    Map<String, Object> constants = getTypedExportedConstants();
+    if (ReactBuildConfig.DEBUG || ReactBuildConfig.IS_INTERNAL_BUILD) {
+      Set<String> obligatoryFlowConstants = new HashSet<>(Arrays.asList(
+          "osVersion",
+          "systemName",
+          "forceTouchAvailable",
+          "reactNativeVersion",
+          "interfaceIdiom",
+          "isTesting"
+      ));
+      Set<String> optionalFlowConstants = new HashSet<>();
+      Set<String> undeclaredConstants = new HashSet<>(constants.keySet());
+      undeclaredConstants.removeAll(obligatoryFlowConstants);
+      undeclaredConstants.removeAll(optionalFlowConstants);
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module Flow doesn't declare constants: %s", undeclaredConstants));
+      }
+      undeclaredConstants = obligatoryFlowConstants;
+      undeclaredConstants.removeAll(constants.keySet());
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module doesn't fill in constants: %s", undeclaredConstants));
+      }
+    }
+    return constants;
+  }
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativePushNotificationManagerIOSSpec.java

@@ -0,0 +1,80 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.Promise;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativePushNotificationManagerIOSSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativePushNotificationManagerIOSSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void removeListeners(double count);
+
+  @ReactMethod
+  public abstract void getInitialNotification(Promise promise);
+
+  @ReactMethod
+  public abstract void setApplicationIconBadgeNumber(double num);
+
+  @ReactMethod
+  public abstract void scheduleLocalNotification(ReadableMap notification);
+
+  @ReactMethod
+  public abstract void getScheduledLocalNotifications(Callback callback);
+
+  @ReactMethod
+  public abstract void checkPermissions(Callback callback);
+
+  @ReactMethod
+  public abstract void requestPermissions(ReadableMap permission, Promise promise);
+
+  @ReactMethod
+  public abstract void removeAllDeliveredNotifications();
+
+  @ReactMethod
+  public abstract void onFinishRemoteNotification(String notificationId, String fetchResult);
+
+  @ReactMethod
+  public abstract void cancelLocalNotifications(ReadableMap userInfo);
+
+  @ReactMethod
+  public abstract void abandonPermissions();
+
+  @ReactMethod
+  public abstract void removeDeliveredNotifications(ReadableArray identifiers);
+
+  @ReactMethod
+  public abstract void cancelAllLocalNotifications();
+
+  @ReactMethod
+  public abstract void getDeliveredNotifications(Callback callback);
+
+  @ReactMethod
+  public abstract void getApplicationIconBadgeNumber(Callback callback);
+
+  @ReactMethod
+  public abstract void addListener(String eventType);
+
+  @ReactMethod
+  public abstract void presentLocalNotification(ReadableMap notification);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeRedBoxSpec.java

@@ -0,0 +1,32 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeRedBoxSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeRedBoxSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void setExtraData(ReadableMap extraData, String identifier);
+
+  @ReactMethod
+  public abstract void dismiss();
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeSegmentFetcherSpec.java

@@ -0,0 +1,34 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeSegmentFetcherSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeSegmentFetcherSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void fetchSegment(double segmentId, ReadableMap options, Callback callback);
+
+  @ReactMethod
+  public void getSegment(double segmentId, ReadableMap options, Callback callback) {
+  }
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeSettingsManagerSpec.java

@@ -0,0 +1,64 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.common.build.ReactBuildConfig;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import javax.annotation.Nullable;
+
+public abstract class NativeSettingsManagerSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeSettingsManagerSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void setValues(ReadableMap values);
+
+  @ReactMethod
+  public abstract void deleteValues(ReadableArray values);
+
+  protected abstract Map<String, Object> getTypedExportedConstants();
+
+  @Override
+  public final @Nullable Map<String, Object> getConstants() {
+    Map<String, Object> constants = getTypedExportedConstants();
+    if (ReactBuildConfig.DEBUG || ReactBuildConfig.IS_INTERNAL_BUILD) {
+      Set<String> obligatoryFlowConstants = new HashSet<>(Arrays.asList(
+          "settings"
+      ));
+      Set<String> optionalFlowConstants = new HashSet<>();
+      Set<String> undeclaredConstants = new HashSet<>(constants.keySet());
+      undeclaredConstants.removeAll(obligatoryFlowConstants);
+      undeclaredConstants.removeAll(optionalFlowConstants);
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module Flow doesn't declare constants: %s", undeclaredConstants));
+      }
+      undeclaredConstants = obligatoryFlowConstants;
+      undeclaredConstants.removeAll(constants.keySet());
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module doesn't fill in constants: %s", undeclaredConstants));
+      }
+    }
+    return constants;
+  }
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeShareModuleSpec.java

@@ -0,0 +1,30 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Promise;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeShareModuleSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeShareModuleSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void share(ReadableMap content, String dialogTitle, Promise promise);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeSoundManagerSpec.java

@@ -0,0 +1,28 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeSoundManagerSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeSoundManagerSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void playTouchSound();
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeSourceCodeSpec.java

@@ -0,0 +1,55 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.common.build.ReactBuildConfig;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import javax.annotation.Nullable;
+
+public abstract class NativeSourceCodeSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeSourceCodeSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  protected abstract Map<String, Object> getTypedExportedConstants();
+
+  @Override
+  public final @Nullable Map<String, Object> getConstants() {
+    Map<String, Object> constants = getTypedExportedConstants();
+    if (ReactBuildConfig.DEBUG || ReactBuildConfig.IS_INTERNAL_BUILD) {
+      Set<String> obligatoryFlowConstants = new HashSet<>(Arrays.asList(
+          "scriptURL"
+      ));
+      Set<String> optionalFlowConstants = new HashSet<>();
+      Set<String> undeclaredConstants = new HashSet<>(constants.keySet());
+      undeclaredConstants.removeAll(obligatoryFlowConstants);
+      undeclaredConstants.removeAll(optionalFlowConstants);
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module Flow doesn't declare constants: %s", undeclaredConstants));
+      }
+      undeclaredConstants = obligatoryFlowConstants;
+      undeclaredConstants.removeAll(constants.keySet());
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module doesn't fill in constants: %s", undeclaredConstants));
+      }
+    }
+    return constants;
+  }
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeStatusBarManagerSpec.java

@@ -0,0 +1,82 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.common.build.ReactBuildConfig;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import javax.annotation.Nullable;
+
+public abstract class NativeStatusBarManagerSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeStatusBarManagerSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void setNetworkActivityIndicatorVisible(boolean visible);
+
+  @ReactMethod
+  public abstract void setTranslucent(boolean translucent);
+
+  @ReactMethod
+  public abstract void getHeight(Callback callback);
+
+  @ReactMethod
+  public abstract void removeListeners(double count);
+
+  @ReactMethod
+  public abstract void setColor(double color, boolean animated);
+
+  @ReactMethod
+  public abstract void setHidden(boolean hidden, @Nullable String withAnimation);
+
+  @ReactMethod
+  public abstract void setStyle(@Nullable String statusBarStyle, Boolean animated);
+
+  @ReactMethod
+  public abstract void addListener(String eventType);
+
+  protected abstract Map<String, Object> getTypedExportedConstants();
+
+  @Override
+  public final @Nullable Map<String, Object> getConstants() {
+    Map<String, Object> constants = getTypedExportedConstants();
+    if (ReactBuildConfig.DEBUG || ReactBuildConfig.IS_INTERNAL_BUILD) {
+      Set<String> obligatoryFlowConstants = new HashSet<>(Arrays.asList(
+          "DEFAULT_BACKGROUND_COLOR",
+          "HEIGHT"
+      ));
+      Set<String> optionalFlowConstants = new HashSet<>();
+      Set<String> undeclaredConstants = new HashSet<>(constants.keySet());
+      undeclaredConstants.removeAll(obligatoryFlowConstants);
+      undeclaredConstants.removeAll(optionalFlowConstants);
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module Flow doesn't declare constants: %s", undeclaredConstants));
+      }
+      undeclaredConstants = obligatoryFlowConstants;
+      undeclaredConstants.removeAll(constants.keySet());
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module doesn't fill in constants: %s", undeclaredConstants));
+      }
+    }
+    return constants;
+  }
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeTVNavigationEventEmitterSpec.java

@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeTVNavigationEventEmitterSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeTVNavigationEventEmitterSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void removeListeners(double count);
+
+  @ReactMethod
+  public abstract void addListener(String eventName);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeTimingSpec.java

@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeTimingSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeTimingSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void deleteTimer(double timerID);
+
+  @ReactMethod
+  public abstract void createTimer(double callbackID, double duration, double jsSchedulingTime,
+      boolean repeats);
+
+  @ReactMethod
+  public abstract void setSendIdleEvents(boolean sendIdleEvents);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeToastAndroidSpec.java

@@ -0,0 +1,70 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.common.build.ReactBuildConfig;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import javax.annotation.Nullable;
+
+public abstract class NativeToastAndroidSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeToastAndroidSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void showWithGravityAndOffset(String message, double duration, double gravity,
+      double xOffset, double yOffset);
+
+  @ReactMethod
+  public abstract void show(String message, double duration);
+
+  @ReactMethod
+  public abstract void showWithGravity(String message, double duration, double gravity);
+
+  protected abstract Map<String, Object> getTypedExportedConstants();
+
+  @Override
+  public final @Nullable Map<String, Object> getConstants() {
+    Map<String, Object> constants = getTypedExportedConstants();
+    if (ReactBuildConfig.DEBUG || ReactBuildConfig.IS_INTERNAL_BUILD) {
+      Set<String> obligatoryFlowConstants = new HashSet<>(Arrays.asList(
+          "CENTER",
+          "TOP",
+          "BOTTOM",
+          "SHORT",
+          "LONG"
+      ));
+      Set<String> optionalFlowConstants = new HashSet<>();
+      Set<String> undeclaredConstants = new HashSet<>(constants.keySet());
+      undeclaredConstants.removeAll(obligatoryFlowConstants);
+      undeclaredConstants.removeAll(optionalFlowConstants);
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module Flow doesn't declare constants: %s", undeclaredConstants));
+      }
+      undeclaredConstants = obligatoryFlowConstants;
+      undeclaredConstants.removeAll(constants.keySet());
+      if (!undeclaredConstants.isEmpty()) {
+        throw new IllegalStateException(String.format("Native Module doesn't fill in constants: %s", undeclaredConstants));
+      }
+    }
+    return constants;
+  }
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeUIManagerSpec.java

@@ -0,0 +1,133 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.Callback;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.bridge.WritableArray;
+import com.facebook.react.bridge.WritableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+import java.util.Map;
+import javax.annotation.Nullable;
+
+public abstract class NativeUIManagerSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeUIManagerSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod(
+      isBlockingSynchronousMethod = true
+  )
+  public abstract WritableArray getDefaultEventTypes();
+
+  @ReactMethod
+  public abstract void setLayoutAnimationEnabledExperimental(boolean enabled);
+
+  @ReactMethod
+  public abstract void configureNextLayoutAnimation(ReadableMap config, Callback callback,
+      Callback errorCallback);
+
+  @ReactMethod
+  public abstract void playTouchSound();
+
+  @ReactMethod
+  public abstract void blur(Double reactTag);
+
+  @ReactMethod
+  public abstract void focus(Double reactTag);
+
+  @ReactMethod
+  public abstract void removeSubviewsFromContainerWithID(double containerID);
+
+  @ReactMethod
+  public abstract void setJSResponder(Double reactTag, boolean blockNativeResponder);
+
+  @ReactMethod
+  public abstract void clearJSResponder();
+
+  @ReactMethod
+  public abstract void measureLayout(Double reactTag, Double ancestorReactTag,
+      Callback errorCallback, Callback callback);
+
+  @ReactMethod(
+      isBlockingSynchronousMethod = true
+  )
+  public abstract WritableMap getConstantsForViewManager(String viewManagerName);
+
+  @ReactMethod
+  public abstract void updateView(double reactTag, String viewName, ReadableMap props);
+
+  @ReactMethod
+  public abstract void dispatchViewManagerCommand(Double reactTag, double commandID,
+      ReadableArray commandArgs);
+
+  @ReactMethod
+  public abstract void createView(Double reactTag, String viewName, double rootTag,
+      ReadableMap props);
+
+  @ReactMethod
+  public abstract void sendAccessibilityEvent(Double reactTag, double eventType);
+
+  @ReactMethod
+  public abstract void measureInWindow(Double reactTag, Callback callback);
+
+  @ReactMethod
+  public abstract void viewIsDescendantOf(Double reactTag, Double ancestorReactTag,
+      Callback callback);
+
+  @ReactMethod(
+      isBlockingSynchronousMethod = true
+  )
+  public abstract WritableMap lazilyLoadView(String name);
+
+  @ReactMethod
+  public abstract void findSubviewIn(Double reactTag, ReadableArray point, Callback callback);
+
+  @ReactMethod
+  public abstract void manageChildren(Double containerTag, ReadableArray moveFromIndices,
+      ReadableArray moveToIndices, ReadableArray addChildReactTags, ReadableArray addAtIndices,
+      ReadableArray removeAtIndices);
+
+  @ReactMethod
+  public abstract void showPopupMenu(Double reactTag, ReadableArray items, Callback error,
+      Callback success);
+
+  @ReactMethod
+  public abstract void replaceExistingNonRootView(Double reactTag, Double newReactTag);
+
+  @ReactMethod
+  public abstract void dismissPopupMenu();
+
+  @ReactMethod
+  public abstract void measure(Double reactTag, Callback callback);
+
+  @ReactMethod
+  public abstract void measureLayoutRelativeToParent(Double reactTag, Callback errorCallback,
+      Callback callback);
+
+  @ReactMethod
+  public abstract void setChildren(Double containerTag, ReadableArray reactTags);
+
+  protected abstract Map<String, Object> getTypedExportedConstants();
+
+  @Override
+  public final @Nullable Map<String, Object> getConstants() {
+    Map<String, Object> constants = getTypedExportedConstants();
+    return constants;
+  }
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeVibrationSpec.java

@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeVibrationSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeVibrationSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void cancel();
+
+  @ReactMethod
+  public abstract void vibrateByPattern(ReadableArray pattern, double repeat);
+
+  @ReactMethod
+  public abstract void vibrate(Double pattern);
+}

ReactAndroid/src/main/java/com/facebook/fbreact/specs/NativeWebSocketModuleSpec.java

@@ -0,0 +1,49 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ *
+ * <p>Generated by an internal genrule from Flow types.
+ *
+ * @generated
+ * @nolint
+ */
+
+package com.facebook.fbreact.specs;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.ReactModuleWithSpec;
+import com.facebook.react.bridge.ReadableArray;
+import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.turbomodule.core.interfaces.TurboModule;
+
+public abstract class NativeWebSocketModuleSpec extends ReactContextBaseJavaModule implements ReactModuleWithSpec, TurboModule {
+  public NativeWebSocketModuleSpec(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @ReactMethod
+  public abstract void sendBinary(String base64String, double socketID);
+
+  @ReactMethod
+  public abstract void removeListeners(double count);
+
+  @ReactMethod
+  public abstract void ping(double socketID);
+
+  @ReactMethod
+  public abstract void close(double code, String reason, double socketID);
+
+  @ReactMethod
+  public abstract void send(String message, double socketID);
+
+  @ReactMethod
+  public abstract void connect(String url, ReadableArray protocols, ReadableMap options,
+      double socketID);
+
+  @ReactMethod
+  public abstract void addListener(String eventName);
+}