Codegen: Add JNI C++ generator for TurboModule subclasses

Summary:
This adds the C++ classes for Android, just like checked in here: https://github.com/facebook/react-native/tree/master/ReactAndroid/src/main/java/com/facebook/fbreact/specs/jni

The whitespace/formatting is slightly different but the functionality should be preserved.

Changelog: [Internal]

Reviewed By: mdvacca

Differential Revision: D23489368

fbshipit-source-id: 60c112a48b6de2d2eb19f7d1bcc894048334610f

packages/react-native-codegen/src/generators/RNCodegen.js

@@ -27,6 +27,8 @@ const generateModuleH = require('./modules/GenerateModuleH.js');
 const generateModuleCpp = require('./modules/GenerateModuleCpp.js');
 const generateModuleHObjCpp = require('./modules/GenerateModuleHObjCpp.js');
 const generateModuleJavaSpec = require('./modules/GenerateModuleJavaSpec.js');
+const GenerateModuleJniCpp = require('./modules/GenerateModuleJniCpp.js');
+const GenerateModuleJniH = require('./modules/GenerateModuleJniH.js');
 const generateModuleMm = require('./modules/GenerateModuleMm.js');
 const generatePropsJavaInterface = require('./components/GeneratePropsJavaInterface.js');
 const generatePropsJavaDelegate = require('./components/GeneratePropsJavaDelegate.js');
@@ -74,7 +76,11 @@ const GENERATORS = {
     generateModuleH.generate,
     generateModuleHObjCpp.generate,
     generateModuleMm.generate,
-    // TODO: Java output and the C++ output need to be separated.
+  ],
+  // TODO: Refactor this to consolidate various C++ output variation instead of forking Android.
+  modulesAndroid: [
+    GenerateModuleJniCpp.generate,
+    GenerateModuleJniH.generate,
     generateModuleJavaSpec.generate,
   ],
   tests: [generateTests.generate],

packages/react-native-codegen/src/generators/modules/GenerateModuleJniCpp.js

@@ -0,0 +1,333 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict
+ * @format
+ */
+
+'use strict';
+
+import type {
+  FunctionTypeAnnotationParam,
+  FunctionTypeAnnotationReturn,
+  NativeModuleShape,
+  ObjectTypeAliasTypeShape,
+  SchemaType,
+} from '../../CodegenSchema';
+
+const {getTypeAliasTypeAnnotation} = require('./Utils');
+
+type FilesOutput = Map<string, string>;
+
+const propertyHeaderTemplate =
+  'static facebook::jsi::Value __hostFunction_Native::_MODULE_NAME_::SpecJSI_::_PROPERTY_NAME_::(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {';
+
+const propertyCastTemplate =
+  'static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, ::_KIND_::, "::_PROPERTY_NAME_::", "::_SIGNATURE_::", args, count);';
+
+const propertyTemplate = `
+${propertyHeaderTemplate}
+  return ${propertyCastTemplate}
+}`;
+
+const propertyDefTemplate =
+  '  methodMap_["::_PROPERTY_NAME_::"] = MethodMetadata {::_ARGS_COUNT_::, __hostFunction_Native::_MODULE_NAME_::SpecJSI_::_PROPERTY_NAME_::};';
+
+const moduleTemplate = `
+::_TURBOMODULE_METHOD_INVOKERS_::
+
+Native::_MODULE_NAME_::SpecJSI::Native::_MODULE_NAME_::SpecJSI(const JavaTurboModule::InitParams &params)
+  : JavaTurboModule(params) {
+::_PROPERTIES_MAP_::
+}`.trim();
+
+const template = `
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * ${'@'}generated by codegen project: GenerateModuleJniCpp.js
+ */
+
+#include ::_INCLUDE_::
+
+namespace facebook {
+namespace react {
+
+::_MODULES_::
+
+} // namespace react
+} // namespace facebook
+`;
+
+function translateReturnTypeToKind(
+  typeAnnotation: FunctionTypeAnnotationReturn,
+): string {
+  switch (typeAnnotation.type) {
+    case 'ReservedFunctionValueTypeAnnotation':
+      switch (typeAnnotation.name) {
+        case 'RootTag':
+          return 'NumberKind';
+        default:
+          (typeAnnotation.name: empty);
+          throw new Error(
+            `Invalid ReservedFunctionValueTypeName name, got ${typeAnnotation.name}`,
+          );
+      }
+    case 'VoidTypeAnnotation':
+      return 'VoidKind';
+    case 'StringTypeAnnotation':
+      return 'StringKind';
+    case 'BooleanTypeAnnotation':
+      return 'BooleanKind';
+    case 'NumberTypeAnnotation':
+    case 'DoubleTypeAnnotation':
+    case 'FloatTypeAnnotation':
+    case 'Int32TypeAnnotation':
+      return 'NumberKind';
+    case 'GenericPromiseTypeAnnotation':
+      return 'PromiseKind';
+    case 'GenericObjectTypeAnnotation':
+    case 'ObjectTypeAnnotation':
+      return 'ObjectKind';
+    case 'ArrayTypeAnnotation':
+      return 'ArrayKind';
+    default:
+      // TODO (T65847278): Figure out why this does not work.
+      // (typeAnnotation.type: empty);
+      throw new Error(
+        `Unknown prop type for returning value, found: ${typeAnnotation.type}"`,
+      );
+  }
+}
+
+function translateParamTypeToJniType(
+  param: FunctionTypeAnnotationParam,
+  aliases: $ReadOnly<{[aliasName: string]: ObjectTypeAliasTypeShape, ...}>,
+): string {
+  const {nullable, typeAnnotation} = param;
+
+  const realTypeAnnotation =
+    typeAnnotation.type === 'TypeAliasTypeAnnotation'
+      ? getTypeAliasTypeAnnotation(typeAnnotation.name, aliases)
+      : typeAnnotation;
+
+  switch (realTypeAnnotation.type) {
+    case 'ReservedFunctionValueTypeAnnotation':
+      switch (realTypeAnnotation.name) {
+        case 'RootTag':
+          return 'D';
+        default:
+          (realTypeAnnotation.name: empty);
+          throw new Error(
+            `Invalid ReservedFunctionValueTypeName name, got ${realTypeAnnotation.name}`,
+          );
+      }
+    case 'VoidTypeAnnotation':
+      return 'V';
+    case 'StringTypeAnnotation':
+      return 'Ljava/lang/String;';
+    case 'BooleanTypeAnnotation':
+      return nullable ? 'Ljava/lang/Boolean' : 'Z';
+    case 'NumberTypeAnnotation':
+    case 'DoubleTypeAnnotation':
+    case 'FloatTypeAnnotation':
+    case 'Int32TypeAnnotation':
+      return nullable ? 'Ljava/lang/Double;' : 'D';
+    case 'GenericPromiseTypeAnnotation':
+      return 'Lcom/facebook/react/bridge/Promise;';
+    case 'GenericObjectTypeAnnotation':
+    case 'ObjectTypeAnnotation':
+      return 'Lcom/facebook/react/bridge/ReadableMap;';
+    case 'ArrayTypeAnnotation':
+      return 'Lcom/facebook/react/bridge/ReadableArray;';
+    case 'FunctionTypeAnnotation':
+      return 'Lcom/facebook/react/bridge/Callback;';
+    default:
+      throw new Error(
+        `Unknown prop type for method arg, found: ${realTypeAnnotation.type}"`,
+      );
+  }
+}
+
+function translateReturnTypeToJniType(
+  typeAnnotation: FunctionTypeAnnotationReturn,
+): string {
+  const {nullable} = typeAnnotation;
+
+  switch (typeAnnotation.type) {
+    case 'ReservedFunctionValueTypeAnnotation':
+      switch (typeAnnotation.name) {
+        case 'RootTag':
+          return 'D';
+        default:
+          (typeAnnotation.name: empty);
+          throw new Error(
+            `Invalid ReservedFunctionValueTypeName name, got ${typeAnnotation.name}`,
+          );
+      }
+    case 'VoidTypeAnnotation':
+      return 'V';
+    case 'StringTypeAnnotation':
+      return 'Ljava/lang/String;';
+    case 'BooleanTypeAnnotation':
+      return nullable ? 'Ljava/lang/Boolean' : 'Z';
+    case 'NumberTypeAnnotation':
+    case 'DoubleTypeAnnotation':
+    case 'FloatTypeAnnotation':
+    case 'Int32TypeAnnotation':
+      return nullable ? 'Ljava/lang/Double;' : 'D';
+    case 'GenericPromiseTypeAnnotation':
+      return 'Lcom/facebook/react/bridge/Promise;';
+    case 'GenericObjectTypeAnnotation':
+    case 'ObjectTypeAnnotation':
+      return 'Lcom/facebook/react/bridge/WritableMap;';
+    case 'ArrayTypeAnnotation':
+      return 'Lcom/facebook/react/bridge/WritableArray;';
+    default:
+      throw new Error(
+        `Unknown prop type for method return type, found: ${typeAnnotation.type}"`,
+      );
+  }
+}
+
+function translateMethodTypeToJniSignature(
+  property,
+  aliases: $ReadOnly<{[aliasName: string]: ObjectTypeAliasTypeShape, ...}>,
+): string {
+  const {name, typeAnnotation} = property;
+  const {returnTypeAnnotation} = typeAnnotation;
+
+  const params = [...typeAnnotation.params];
+  let processedReturnTypeAnnotation = returnTypeAnnotation;
+  const isPromiseReturn =
+    returnTypeAnnotation.type === 'GenericPromiseTypeAnnotation';
+  if (isPromiseReturn) {
+    processedReturnTypeAnnotation = {
+      nullable: false,
+      type: 'VoidTypeAnnotation',
+    };
+  }
+
+  const argsSignatureParts = params.map(t => {
+    return translateParamTypeToJniType(t, aliases);
+  });
+  if (isPromiseReturn) {
+    // Additional promise arg for this case.
+    argsSignatureParts.push(translateReturnTypeToJniType(returnTypeAnnotation));
+  }
+  const argsSignature = argsSignatureParts.join('');
+  const returnSignature =
+    name === 'getConstants'
+      ? 'Ljava/util/Map;'
+      : translateReturnTypeToJniType(processedReturnTypeAnnotation);
+
+  return `(${argsSignature})${returnSignature}`;
+}
+
+function translateMethodForImplementation(
+  property,
+  aliases: $ReadOnly<{[aliasName: string]: ObjectTypeAliasTypeShape, ...}>,
+): string {
+  const {returnTypeAnnotation} = property.typeAnnotation;
+
+  const numberOfParams =
+    property.typeAnnotation.params.length +
+    (returnTypeAnnotation.type === 'GenericPromiseTypeAnnotation' ? 1 : 0);
+  const translatedArguments = property.typeAnnotation.params
+    .map(param => param.name)
+    .concat(
+      returnTypeAnnotation.type === 'GenericPromiseTypeAnnotation'
+        ? ['promise']
+        : [],
+    )
+    .slice(1)
+    .join(':')
+    .concat(':');
+  if (
+    property.name === 'getConstants' &&
+    returnTypeAnnotation.type === 'ObjectTypeAnnotation' &&
+    returnTypeAnnotation.properties &&
+    returnTypeAnnotation.properties.length === 0
+  ) {
+    return '';
+  }
+  return propertyTemplate
+    .replace(/::_KIND_::/g, translateReturnTypeToKind(returnTypeAnnotation))
+    .replace(/::_PROPERTY_NAME_::/g, property.name)
+    .replace(
+      /::_ARGS_::/g,
+      numberOfParams === 0
+        ? ''
+        : (numberOfParams === 1 ? '' : ':') + translatedArguments,
+    )
+    .replace(
+      /::_SIGNATURE_::/g,
+      translateMethodTypeToJniSignature(property, aliases),
+    );
+}
+
+module.exports = {
+  generate(
+    libraryName: string,
+    schema: SchemaType,
+    moduleSpecName: string,
+  ): FilesOutput {
+    const nativeModules: {[name: string]: NativeModuleShape, ...} = Object.keys(
+      schema.modules,
+    )
+      .map(moduleName => {
+        const modules = schema.modules[moduleName].nativeModules;
+        if (modules == null) {
+          return null;
+        }
+
+        return modules;
+      })
+      .filter(Boolean)
+      .reduce((acc, modules) => Object.assign(acc, modules), {});
+
+    const modules = Object.keys(nativeModules)
+      .map(name => {
+        const {aliases, properties} = nativeModules[name];
+        const translatedMethods = properties
+          .map(property => translateMethodForImplementation(property, aliases))
+          .join('\n');
+        return moduleTemplate
+          .replace(/::_TURBOMODULE_METHOD_INVOKERS_::/g, translatedMethods)
+          .replace(
+            '::_PROPERTIES_MAP_::',
+            properties
+              .map(
+                ({
+                  name: propertyName,
+                  typeAnnotation: {params, returnTypeAnnotation},
+                }) =>
+                  propertyName === 'getConstants' &&
+                  returnTypeAnnotation.type === 'ObjectTypeAnnotation' &&
+                  returnTypeAnnotation.properties &&
+                  returnTypeAnnotation.properties.length === 0
+                    ? ''
+                    : propertyDefTemplate
+                        .replace(/::_PROPERTY_NAME_::/g, propertyName)
+                        .replace(/::_ARGS_COUNT_::/g, params.length.toString()),
+              )
+              .join('\n'),
+          )
+          .replace(/::_MODULE_NAME_::/g, name);
+      })
+      .join('\n');
+
+    const fileName = `${moduleSpecName}-generated.cpp`;
+    const replacedTemplate = template
+      .replace(/::_MODULES_::/g, modules)
+      .replace(/::_LIBRARY_NAME_::/g, libraryName)
+      .replace(/::_INCLUDE_::/g, `"${moduleSpecName}.h"`);
+    return new Map([[fileName, replacedTemplate]]);
+  },
+};

packages/react-native-codegen/src/generators/modules/GenerateModuleJniH.js

@@ -0,0 +1,78 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict
+ * @format
+ */
+
+'use strict';
+
+import type {SchemaType} from '../../CodegenSchema';
+
+type FilesOutput = Map<string, string>;
+
+const moduleTemplate = `/**
+ * JNI C++ class for module '::_MODULE_NAME_::'
+ */
+class JSI_EXPORT Native::_MODULE_NAME_::SpecJSI : public JavaTurboModule {
+public:
+  Native::_MODULE_NAME_::SpecJSI(const JavaTurboModule::InitParams &params);
+};
+`;
+
+const template = `
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * ${'@'}generated by codegen project: GenerateModuleJniH.js
+ */
+
+#import <ReactCommon/JavaTurboModule.h>
+#import <ReactCommon/TurboModule.h>
+#import <fb/fbjni.h>
+#import <jsi/jsi.h>
+
+namespace facebook {
+namespace react {
+
+::_MODULES_::
+
+} // namespace react
+} // namespace facebook
+`;
+
+module.exports = {
+  generate(
+    libraryName: string,
+    schema: SchemaType,
+    moduleSpecName: string,
+  ): FilesOutput {
+    const nativeModules = Object.keys(schema.modules)
+      .sort()
+      .map(moduleName => {
+        const modules = schema.modules[moduleName].nativeModules;
+        if (modules == null) {
+          return null;
+        }
+
+        return modules;
+      })
+      .filter(Boolean)
+      .reduce((acc, components) => Object.assign(acc, components), {});
+
+    const modules = Object.keys(nativeModules)
+      .map(name => moduleTemplate.replace(/::_MODULE_NAME_::/g, name))
+      .join('\n');
+
+    const fileName = `${moduleSpecName}.h`;
+    const replacedTemplate = template.replace(/::_MODULES_::/g, modules);
+
+    return new Map([[fileName, replacedTemplate]]);
+  },
+};

packages/react-native-codegen/src/generators/modules/__tests__/GenerateModuleJniCpp-test.js

@@ -0,0 +1,29 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @emails oncall+react_native
+ * @flow strict-local
+ * @format
+ */
+
+'use strict';
+
+const fixtures = require('../__test_fixtures__/fixtures.js');
+const generator = require('../GenerateModuleJniCpp.js');
+
+describe('GenerateModuleJniCpp', () => {
+  Object.keys(fixtures)
+    .sort()
+    .forEach(fixtureName => {
+      const fixture = fixtures[fixtureName];
+
+      it(`can generate fixture ${fixtureName}`, () => {
+        expect(
+          generator.generate(fixtureName, fixture, 'SampleSpec'),
+        ).toMatchSnapshot();
+      });
+    });
+});

packages/react-native-codegen/src/generators/modules/__tests__/GenerateModuleJniH-test.js

@@ -0,0 +1,29 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @emails oncall+react_native
+ * @flow strict-local
+ * @format
+ */
+
+'use strict';
+
+const fixtures = require('../__test_fixtures__/fixtures.js');
+const generator = require('../GenerateModuleJniH.js');
+
+describe('GenerateModuleJniH', () => {
+  Object.keys(fixtures)
+    .sort()
+    .forEach(fixtureName => {
+      const fixture = fixtures[fixtureName];
+
+      it(`can generate fixture ${fixtureName}`, () => {
+        expect(
+          generator.generate(fixtureName, fixture, 'SampleSpec'),
+        ).toMatchSnapshot();
+      });
+    });
+});

packages/react-native-codegen/src/generators/modules/__tests__/__snapshots__/GenerateModuleJniCpp-test.js.snap

@@ -0,0 +1,366 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`GenerateModuleJniCpp can generate fixture COMPLEX_OBJECTS 1`] = `
+Map {
+  "SampleSpec-generated.cpp" => "
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @generated by codegen project: GenerateModuleJniCpp.js
+ */
+
+#include \\"SampleSpec.h\\"
+
+namespace facebook {
+namespace react {
+
+
+static facebook::jsi::Value __hostFunction_NativeSampleTurboModuleSpecJSI_difficult(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, ObjectKind, \\"difficult\\", \\"(Lcom/facebook/react/bridge/ReadableMap;)Lcom/facebook/react/bridge/WritableMap;\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeSampleTurboModuleSpecJSI_optionals(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, VoidKind, \\"optionals\\", \\"(Lcom/facebook/react/bridge/ReadableMap;)V\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeSampleTurboModuleSpecJSI_optionalMethod(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, VoidKind, \\"optionalMethod\\", \\"(Lcom/facebook/react/bridge/ReadableMap;Lcom/facebook/react/bridge/Callback;Lcom/facebook/react/bridge/ReadableArray;)V\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeSampleTurboModuleSpecJSI_getArrays(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, VoidKind, \\"getArrays\\", \\"(Lcom/facebook/react/bridge/ReadableMap;)V\\", args, count);
+}
+
+NativeSampleTurboModuleSpecJSI::NativeSampleTurboModuleSpecJSI(const JavaTurboModule::InitParams &params)
+  : JavaTurboModule(params) {
+  methodMap_[\\"difficult\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleSpecJSI_difficult};
+  methodMap_[\\"optionals\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleSpecJSI_optionals};
+  methodMap_[\\"optionalMethod\\"] = MethodMetadata {3, __hostFunction_NativeSampleTurboModuleSpecJSI_optionalMethod};
+  methodMap_[\\"getArrays\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleSpecJSI_getArrays};
+}
+
+} // namespace react
+} // namespace facebook
+",
+}
+`;
+
+exports[`GenerateModuleJniCpp can generate fixture EMPTY_NATIVE_MODULES 1`] = `
+Map {
+  "SampleSpec-generated.cpp" => "
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @generated by codegen project: GenerateModuleJniCpp.js
+ */
+
+#include \\"SampleSpec.h\\"
+
+namespace facebook {
+namespace react {
+
+
+
+NativeSampleTurboModuleSpecJSI::NativeSampleTurboModuleSpecJSI(const JavaTurboModule::InitParams &params)
+  : JavaTurboModule(params) {
+
+}
+
+} // namespace react
+} // namespace facebook
+",
+}
+`;
+
+exports[`GenerateModuleJniCpp can generate fixture NATIVE_MODULES_WITH_TYPE_ALIASES 1`] = `
+Map {
+  "SampleSpec-generated.cpp" => "
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @generated by codegen project: GenerateModuleJniCpp.js
+ */
+
+#include \\"SampleSpec.h\\"
+
+namespace facebook {
+namespace react {
+
+
+
+static facebook::jsi::Value __hostFunction_NativeAliasTurboModuleSpecJSI_cropImage(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, VoidKind, \\"cropImage\\", \\"(Lcom/facebook/react/bridge/ReadableMap;)V\\", args, count);
+}
+
+NativeAliasTurboModuleSpecJSI::NativeAliasTurboModuleSpecJSI(const JavaTurboModule::InitParams &params)
+  : JavaTurboModule(params) {
+
+  methodMap_[\\"cropImage\\"] = MethodMetadata {1, __hostFunction_NativeAliasTurboModuleSpecJSI_cropImage};
+}
+
+} // namespace react
+} // namespace facebook
+",
+}
+`;
+
+exports[`GenerateModuleJniCpp can generate fixture REAL_MODULE_EXAMPLE 1`] = `
+Map {
+  "SampleSpec-generated.cpp" => "
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @generated by codegen project: GenerateModuleJniCpp.js
+ */
+
+#include \\"SampleSpec.h\\"
+
+namespace facebook {
+namespace react {
+
+
+
+static facebook::jsi::Value __hostFunction_NativeCameraRollManagerSpecJSI_getPhotos(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, PromiseKind, \\"getPhotos\\", \\"(Lcom/facebook/react/bridge/ReadableMap;Lcom/facebook/react/bridge/Promise;)V\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeCameraRollManagerSpecJSI_saveToCameraRoll(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, PromiseKind, \\"saveToCameraRoll\\", \\"(Ljava/lang/String;Ljava/lang/String;Lcom/facebook/react/bridge/Promise;)V\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeCameraRollManagerSpecJSI_deletePhotos(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, PromiseKind, \\"deletePhotos\\", \\"(Lcom/facebook/react/bridge/ReadableArray;Lcom/facebook/react/bridge/Promise;)V\\", args, count);
+}
+
+NativeCameraRollManagerSpecJSI::NativeCameraRollManagerSpecJSI(const JavaTurboModule::InitParams &params)
+  : JavaTurboModule(params) {
+
+  methodMap_[\\"getPhotos\\"] = MethodMetadata {1, __hostFunction_NativeCameraRollManagerSpecJSI_getPhotos};
+  methodMap_[\\"saveToCameraRoll\\"] = MethodMetadata {2, __hostFunction_NativeCameraRollManagerSpecJSI_saveToCameraRoll};
+  methodMap_[\\"deletePhotos\\"] = MethodMetadata {1, __hostFunction_NativeCameraRollManagerSpecJSI_deletePhotos};
+}
+
+static facebook::jsi::Value __hostFunction_NativeImagePickerIOSSpecJSI_openCameraDialog(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, VoidKind, \\"openCameraDialog\\", \\"(Lcom/facebook/react/bridge/ReadableMap;Lcom/facebook/react/bridge/Callback;Lcom/facebook/react/bridge/Callback;)V\\", args, count);
+}
+
+NativeImagePickerIOSSpecJSI::NativeImagePickerIOSSpecJSI(const JavaTurboModule::InitParams &params)
+  : JavaTurboModule(params) {
+  methodMap_[\\"openCameraDialog\\"] = MethodMetadata {3, __hostFunction_NativeImagePickerIOSSpecJSI_openCameraDialog};
+}
+
+static facebook::jsi::Value __hostFunction_NativeExceptionsManagerSpecJSI_reportFatalException(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, VoidKind, \\"reportFatalException\\", \\"(Ljava/lang/String;Lcom/facebook/react/bridge/ReadableArray;D)V\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeExceptionsManagerSpecJSI_reportSoftException(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, VoidKind, \\"reportSoftException\\", \\"(Ljava/lang/String;Lcom/facebook/react/bridge/ReadableArray;D)V\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeExceptionsManagerSpecJSI_reportException(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, VoidKind, \\"reportException\\", \\"(Lcom/facebook/react/bridge/ReadableMap;)V\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeExceptionsManagerSpecJSI_updateExceptionMessage(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, VoidKind, \\"updateExceptionMessage\\", \\"(Ljava/lang/String;Lcom/facebook/react/bridge/ReadableArray;D)V\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeExceptionsManagerSpecJSI_dismissRedbox(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, VoidKind, \\"dismissRedbox\\", \\"()V\\", args, count);
+}
+
+NativeExceptionsManagerSpecJSI::NativeExceptionsManagerSpecJSI(const JavaTurboModule::InitParams &params)
+  : JavaTurboModule(params) {
+  methodMap_[\\"reportFatalException\\"] = MethodMetadata {3, __hostFunction_NativeExceptionsManagerSpecJSI_reportFatalException};
+  methodMap_[\\"reportSoftException\\"] = MethodMetadata {3, __hostFunction_NativeExceptionsManagerSpecJSI_reportSoftException};
+  methodMap_[\\"reportException\\"] = MethodMetadata {1, __hostFunction_NativeExceptionsManagerSpecJSI_reportException};
+  methodMap_[\\"updateExceptionMessage\\"] = MethodMetadata {3, __hostFunction_NativeExceptionsManagerSpecJSI_updateExceptionMessage};
+  methodMap_[\\"dismissRedbox\\"] = MethodMetadata {0, __hostFunction_NativeExceptionsManagerSpecJSI_dismissRedbox};
+}
+
+} // namespace react
+} // namespace facebook
+",
+}
+`;
+
+exports[`GenerateModuleJniCpp can generate fixture SIMPLE_NATIVE_MODULES 1`] = `
+Map {
+  "SampleSpec-generated.cpp" => "
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @generated by codegen project: GenerateModuleJniCpp.js
+ */
+
+#include \\"SampleSpec.h\\"
+
+namespace facebook {
+namespace react {
+
+
+static facebook::jsi::Value __hostFunction_NativeSampleTurboModuleSpecJSI_getConstants(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, ObjectKind, \\"getConstants\\", \\"()Ljava/util/Map;\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeSampleTurboModuleSpecJSI_voidFunc(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, VoidKind, \\"voidFunc\\", \\"()V\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeSampleTurboModuleSpecJSI_getBool(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, BooleanKind, \\"getBool\\", \\"(Z)Z\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeSampleTurboModuleSpecJSI_getNumber(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, NumberKind, \\"getNumber\\", \\"(D)D\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeSampleTurboModuleSpecJSI_getString(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, StringKind, \\"getString\\", \\"(Ljava/lang/String;)Ljava/lang/String;\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeSampleTurboModuleSpecJSI_getArray(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, ArrayKind, \\"getArray\\", \\"(Lcom/facebook/react/bridge/ReadableArray;)Lcom/facebook/react/bridge/WritableArray;\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeSampleTurboModuleSpecJSI_getObject(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, ObjectKind, \\"getObject\\", \\"(Lcom/facebook/react/bridge/ReadableMap;)Lcom/facebook/react/bridge/WritableMap;\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeSampleTurboModuleSpecJSI_getRootTag(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, NumberKind, \\"getRootTag\\", \\"(D)D\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeSampleTurboModuleSpecJSI_getValue(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, ObjectKind, \\"getValue\\", \\"(DLjava/lang/String;Lcom/facebook/react/bridge/ReadableMap;)Lcom/facebook/react/bridge/WritableMap;\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeSampleTurboModuleSpecJSI_getValueWithCallback(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, VoidKind, \\"getValueWithCallback\\", \\"(Lcom/facebook/react/bridge/Callback;)V\\", args, count);
+}
+
+static facebook::jsi::Value __hostFunction_NativeSampleTurboModuleSpecJSI_getValueWithPromise(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, PromiseKind, \\"getValueWithPromise\\", \\"(ZLcom/facebook/react/bridge/Promise;)V\\", args, count);
+}
+
+NativeSampleTurboModuleSpecJSI::NativeSampleTurboModuleSpecJSI(const JavaTurboModule::InitParams &params)
+  : JavaTurboModule(params) {
+  methodMap_[\\"getConstants\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModuleSpecJSI_getConstants};
+  methodMap_[\\"voidFunc\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModuleSpecJSI_voidFunc};
+  methodMap_[\\"getBool\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleSpecJSI_getBool};
+  methodMap_[\\"getNumber\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleSpecJSI_getNumber};
+  methodMap_[\\"getString\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleSpecJSI_getString};
+  methodMap_[\\"getArray\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleSpecJSI_getArray};
+  methodMap_[\\"getObject\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleSpecJSI_getObject};
+  methodMap_[\\"getRootTag\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleSpecJSI_getRootTag};
+  methodMap_[\\"getValue\\"] = MethodMetadata {3, __hostFunction_NativeSampleTurboModuleSpecJSI_getValue};
+  methodMap_[\\"getValueWithCallback\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleSpecJSI_getValueWithCallback};
+  methodMap_[\\"getValueWithPromise\\"] = MethodMetadata {1, __hostFunction_NativeSampleTurboModuleSpecJSI_getValueWithPromise};
+}
+
+} // namespace react
+} // namespace facebook
+",
+}
+`;
+
+exports[`GenerateModuleJniCpp can generate fixture TWO_MODULES_DIFFERENT_FILES 1`] = `
+Map {
+  "SampleSpec-generated.cpp" => "
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @generated by codegen project: GenerateModuleJniCpp.js
+ */
+
+#include \\"SampleSpec.h\\"
+
+namespace facebook {
+namespace react {
+
+
+static facebook::jsi::Value __hostFunction_NativeSampleTurboModuleSpecJSI_voidFunc(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, VoidKind, \\"voidFunc\\", \\"()V\\", args, count);
+}
+
+NativeSampleTurboModuleSpecJSI::NativeSampleTurboModuleSpecJSI(const JavaTurboModule::InitParams &params)
+  : JavaTurboModule(params) {
+  methodMap_[\\"voidFunc\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModuleSpecJSI_voidFunc};
+}
+
+
+static facebook::jsi::Value __hostFunction_NativeSample2TurboModuleSpecJSI_voidFunc(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, VoidKind, \\"voidFunc\\", \\"()V\\", args, count);
+}
+
+NativeSample2TurboModuleSpecJSI::NativeSample2TurboModuleSpecJSI(const JavaTurboModule::InitParams &params)
+  : JavaTurboModule(params) {
+
+  methodMap_[\\"voidFunc\\"] = MethodMetadata {0, __hostFunction_NativeSample2TurboModuleSpecJSI_voidFunc};
+}
+
+} // namespace react
+} // namespace facebook
+",
+}
+`;
+
+exports[`GenerateModuleJniCpp can generate fixture TWO_MODULES_SAME_FILE 1`] = `
+Map {
+  "SampleSpec-generated.cpp" => "
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @generated by codegen project: GenerateModuleJniCpp.js
+ */
+
+#include \\"SampleSpec.h\\"
+
+namespace facebook {
+namespace react {
+
+
+static facebook::jsi::Value __hostFunction_NativeSampleTurboModuleSpecJSI_voidFunc(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, VoidKind, \\"voidFunc\\", \\"()V\\", args, count);
+}
+
+NativeSampleTurboModuleSpecJSI::NativeSampleTurboModuleSpecJSI(const JavaTurboModule::InitParams &params)
+  : JavaTurboModule(params) {
+  methodMap_[\\"voidFunc\\"] = MethodMetadata {0, __hostFunction_NativeSampleTurboModuleSpecJSI_voidFunc};
+}
+
+static facebook::jsi::Value __hostFunction_NativeSample2TurboModuleSpecJSI_voidFunc(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+  return static_cast<JavaTurboModule &>(turboModule).invokeJavaMethod(rt, VoidKind, \\"voidFunc\\", \\"()V\\", args, count);
+}
+
+NativeSample2TurboModuleSpecJSI::NativeSample2TurboModuleSpecJSI(const JavaTurboModule::InitParams &params)
+  : JavaTurboModule(params) {
+  methodMap_[\\"voidFunc\\"] = MethodMetadata {0, __hostFunction_NativeSample2TurboModuleSpecJSI_voidFunc};
+}
+
+} // namespace react
+} // namespace facebook
+",
+}
+`;

packages/react-native-codegen/src/generators/modules/__tests__/__snapshots__/GenerateModuleJniH-test.js.snap

@@ -0,0 +1,278 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`GenerateModuleJniH can generate fixture COMPLEX_OBJECTS 1`] = `
+Map {
+  "SampleSpec.h" => "
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @generated by codegen project: GenerateModuleJniH.js
+ */
+
+#import <ReactCommon/JavaTurboModule.h>
+#import <ReactCommon/TurboModule.h>
+#import <fb/fbjni.h>
+#import <jsi/jsi.h>
+
+namespace facebook {
+namespace react {
+
+/**
+ * JNI C++ class for module 'SampleTurboModule'
+ */
+class JSI_EXPORT NativeSampleTurboModuleSpecJSI : public JavaTurboModule {
+public:
+  NativeSampleTurboModuleSpecJSI(const JavaTurboModule::InitParams &params);
+};
+
+
+} // namespace react
+} // namespace facebook
+",
+}
+`;
+
+exports[`GenerateModuleJniH can generate fixture EMPTY_NATIVE_MODULES 1`] = `
+Map {
+  "SampleSpec.h" => "
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @generated by codegen project: GenerateModuleJniH.js
+ */
+
+#import <ReactCommon/JavaTurboModule.h>
+#import <ReactCommon/TurboModule.h>
+#import <fb/fbjni.h>
+#import <jsi/jsi.h>
+
+namespace facebook {
+namespace react {
+
+/**
+ * JNI C++ class for module 'SampleTurboModule'
+ */
+class JSI_EXPORT NativeSampleTurboModuleSpecJSI : public JavaTurboModule {
+public:
+  NativeSampleTurboModuleSpecJSI(const JavaTurboModule::InitParams &params);
+};
+
+
+} // namespace react
+} // namespace facebook
+",
+}
+`;
+
+exports[`GenerateModuleJniH can generate fixture NATIVE_MODULES_WITH_TYPE_ALIASES 1`] = `
+Map {
+  "SampleSpec.h" => "
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @generated by codegen project: GenerateModuleJniH.js
+ */
+
+#import <ReactCommon/JavaTurboModule.h>
+#import <ReactCommon/TurboModule.h>
+#import <fb/fbjni.h>
+#import <jsi/jsi.h>
+
+namespace facebook {
+namespace react {
+
+/**
+ * JNI C++ class for module 'AliasTurboModule'
+ */
+class JSI_EXPORT NativeAliasTurboModuleSpecJSI : public JavaTurboModule {
+public:
+  NativeAliasTurboModuleSpecJSI(const JavaTurboModule::InitParams &params);
+};
+
+
+} // namespace react
+} // namespace facebook
+",
+}
+`;
+
+exports[`GenerateModuleJniH can generate fixture REAL_MODULE_EXAMPLE 1`] = `
+Map {
+  "SampleSpec.h" => "
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @generated by codegen project: GenerateModuleJniH.js
+ */
+
+#import <ReactCommon/JavaTurboModule.h>
+#import <ReactCommon/TurboModule.h>
+#import <fb/fbjni.h>
+#import <jsi/jsi.h>
+
+namespace facebook {
+namespace react {
+
+/**
+ * JNI C++ class for module 'CameraRollManager'
+ */
+class JSI_EXPORT NativeCameraRollManagerSpecJSI : public JavaTurboModule {
+public:
+  NativeCameraRollManagerSpecJSI(const JavaTurboModule::InitParams &params);
+};
+
+/**
+ * JNI C++ class for module 'ExceptionsManager'
+ */
+class JSI_EXPORT NativeExceptionsManagerSpecJSI : public JavaTurboModule {
+public:
+  NativeExceptionsManagerSpecJSI(const JavaTurboModule::InitParams &params);
+};
+
+/**
+ * JNI C++ class for module 'ImagePickerIOS'
+ */
+class JSI_EXPORT NativeImagePickerIOSSpecJSI : public JavaTurboModule {
+public:
+  NativeImagePickerIOSSpecJSI(const JavaTurboModule::InitParams &params);
+};
+
+
+} // namespace react
+} // namespace facebook
+",
+}
+`;
+
+exports[`GenerateModuleJniH can generate fixture SIMPLE_NATIVE_MODULES 1`] = `
+Map {
+  "SampleSpec.h" => "
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @generated by codegen project: GenerateModuleJniH.js
+ */
+
+#import <ReactCommon/JavaTurboModule.h>
+#import <ReactCommon/TurboModule.h>
+#import <fb/fbjni.h>
+#import <jsi/jsi.h>
+
+namespace facebook {
+namespace react {
+
+/**
+ * JNI C++ class for module 'SampleTurboModule'
+ */
+class JSI_EXPORT NativeSampleTurboModuleSpecJSI : public JavaTurboModule {
+public:
+  NativeSampleTurboModuleSpecJSI(const JavaTurboModule::InitParams &params);
+};
+
+
+} // namespace react
+} // namespace facebook
+",
+}
+`;
+
+exports[`GenerateModuleJniH can generate fixture TWO_MODULES_DIFFERENT_FILES 1`] = `
+Map {
+  "SampleSpec.h" => "
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @generated by codegen project: GenerateModuleJniH.js
+ */
+
+#import <ReactCommon/JavaTurboModule.h>
+#import <ReactCommon/TurboModule.h>
+#import <fb/fbjni.h>
+#import <jsi/jsi.h>
+
+namespace facebook {
+namespace react {
+
+/**
+ * JNI C++ class for module 'SampleTurboModule'
+ */
+class JSI_EXPORT NativeSampleTurboModuleSpecJSI : public JavaTurboModule {
+public:
+  NativeSampleTurboModuleSpecJSI(const JavaTurboModule::InitParams &params);
+};
+
+/**
+ * JNI C++ class for module 'Sample2TurboModule'
+ */
+class JSI_EXPORT NativeSample2TurboModuleSpecJSI : public JavaTurboModule {
+public:
+  NativeSample2TurboModuleSpecJSI(const JavaTurboModule::InitParams &params);
+};
+
+
+} // namespace react
+} // namespace facebook
+",
+}
+`;
+
+exports[`GenerateModuleJniH can generate fixture TWO_MODULES_SAME_FILE 1`] = `
+Map {
+  "SampleSpec.h" => "
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @generated by codegen project: GenerateModuleJniH.js
+ */
+
+#import <ReactCommon/JavaTurboModule.h>
+#import <ReactCommon/TurboModule.h>
+#import <fb/fbjni.h>
+#import <jsi/jsi.h>
+
+namespace facebook {
+namespace react {
+
+/**
+ * JNI C++ class for module 'SampleTurboModule'
+ */
+class JSI_EXPORT NativeSampleTurboModuleSpecJSI : public JavaTurboModule {
+public:
+  NativeSampleTurboModuleSpecJSI(const JavaTurboModule::InitParams &params);
+};
+
+/**
+ * JNI C++ class for module 'Sample2TurboModule'
+ */
+class JSI_EXPORT NativeSample2TurboModuleSpecJSI : public JavaTurboModule {
+public:
+  NativeSample2TurboModuleSpecJSI(const JavaTurboModule::InitParams &params);
+};
+
+
+} // namespace react
+} // namespace facebook
+",
+}
+`;

scripts/generate-native-modules-specs-cli.js

@@ -38,7 +38,7 @@ function generateSpec(platform, schemaPath, outputDirectory) {
   RNCodegen.generate(
     {libraryName, schema, outputDirectory: tempOutputDirectory, moduleSpecName},
     {
-      generators: ['modules'],
+      generators: platform === 'android' ? ['modulesAndroid'] : ['modules'],
     },
   );
 
@@ -73,6 +73,22 @@ function generateSpec(platform, schemaPath, outputDirectory) {
           `${outputDirectory}/${f}`,
         );
       });
+
+    // And all C++ files for JNI.
+    const jniOutputDirectory = `${outputDirectory}/jni`;
+    mkdirp.sync(jniOutputDirectory);
+    files
+      .filter(
+        f =>
+          f.startsWith(moduleSpecName) &&
+          (f.endsWith('.h') || f.endsWith('.cpp')),
+      )
+      .forEach(f => {
+        fs.copyFileSync(
+          `${tempOutputDirectory}/${f}`,
+          `${jniOutputDirectory}/${f}`,
+        );
+      });
   }
 }