Chore/extract codegen case object to parser primitives (#34926)

Summary:
Part of https://github.com/facebook/react-native/issues/34872

This PR extracts the content of the case 'Object' ([Flow](b444f0e44e/packages/react-native-codegen/src/parsers/flow/modules/index.js (L365-L367)), [TypeScript](00b795642a/packages/react-native-codegen/src/parsers/typescript/modules/index.js (L400-L402))) into a single emitObject function in the parsers-primitives.js file. Use the new function in the parsers.

## Changelog

[Internal] [Changed] - Extract contents of the case 'Object' into a single emitObject function

Pull Request resolved: https://github.com/facebook/react-native/pull/34926

Test Plan: <img width="276" alt="image" src="https://user-images.githubusercontent.com/18408823/194892107-1da9d6e5-c659-47f9-8597-ff4a4b7710ca.png">

Reviewed By: rshest

Differential Revision: D40231670

Pulled By: cipolleschi

fbshipit-source-id: db6a61427c8c020d48be5317b094f136842b62ca

packages/react-native-codegen/src/parsers/__tests__/parsers-primitives-test.js

@@ -16,9 +16,10 @@ const {
   emitDouble,
   emitNumber,
   emitInt32,
+  emitObject,
+  emitPromise,
   emitRootTag,
   typeAliasResolution,
-  emitPromise,
 } = require('../parsers-primitives.js');
 
 describe('emitBoolean', () => {
@@ -315,3 +316,29 @@ describe('emitPromise', () => {
     });
   });
 });
+
+describe('emitObject', () => {
+  describe('when nullable is true', () => {
+    it('returns nullable type annotation', () => {
+      const result = emitObject(true);
+      const expected = {
+        type: 'NullableTypeAnnotation',
+        typeAnnotation: {
+          type: 'GenericObjectTypeAnnotation',
+        },
+      };
+
+      expect(result).toEqual(expected);
+    });
+  });
+  describe('when nullable is false', () => {
+    it('returns non nullable type annotation', () => {
+      const result = emitObject(false);
+      const expected = {
+        type: 'GenericObjectTypeAnnotation',
+      };
+
+      expect(result).toEqual(expected);
+    });
+  });
+});

packages/react-native-codegen/src/parsers/flow/modules/index.js

@@ -42,9 +42,10 @@ const {
   emitDouble,
   emitNumber,
   emitInt32,
+  emitObject,
+  emitPromise,
   emitRootTag,
   typeAliasResolution,
-  emitPromise,
 } = require('../../parsers-primitives');
 const {
   MisnamedModuleInterfaceParserError,
@@ -218,9 +219,7 @@ function translateTypeAnnotation(
         }
         case 'UnsafeObject':
         case 'Object': {
-          return wrapNullable(nullable, {
-            type: 'GenericObjectTypeAnnotation',
-          });
+          return emitObject(nullable);
         }
         default: {
           const maybeEumDeclaration = types[typeAnnotation.id.name];

packages/react-native-codegen/src/parsers/parsers-primitives.js

@@ -19,6 +19,7 @@ import type {
   BooleanTypeAnnotation,
   DoubleTypeAnnotation,
   Int32TypeAnnotation,
+  NativeModuleGenericObjectTypeAnnotation,
   ReservedTypeAnnotation,
   ObjectTypeAnnotation,
   NativeModulePromiseTypeAnnotation,
@@ -135,12 +136,21 @@ function emitPromise(
   });
 }
 
+function emitObject(
+  nullable: boolean,
+): Nullable<NativeModuleGenericObjectTypeAnnotation> {
+  return wrapNullable(nullable, {
+    type: 'GenericObjectTypeAnnotation',
+  });
+}
+
 module.exports = {
   emitBoolean,
   emitDouble,
   emitInt32,
   emitNumber,
+  emitObject,
+  emitPromise,
   emitRootTag,
   typeAliasResolution,
-  emitPromise,
 };

packages/react-native-codegen/src/parsers/typescript/modules/index.js

@@ -42,9 +42,10 @@ const {
   emitDouble,
   emitNumber,
   emitInt32,
+  emitObject,
+  emitPromise,
   emitRootTag,
   typeAliasResolution,
-  emitPromise,
 } = require('../../parsers-primitives');
 const {
   MisnamedModuleInterfaceParserError,
@@ -251,9 +252,7 @@ function translateTypeAnnotation(
         }
         case 'UnsafeObject':
         case 'Object': {
-          return wrapNullable(nullable, {
-            type: 'GenericObjectTypeAnnotation',
-          });
+          return emitObject(nullable);
         }
         default: {
           const maybeEumDeclaration = types[typeAnnotation.typeName.name];