Extract contents of the case 'BooleanTypeAnnotation' into a single em…

…itBoolean function (#34907)

Summary:
Part of #34872

This PR extracts the content of the case 'BooleanTypeAnnotation' ([Flow](https://github.com/facebook/react-native/blob/b444f0e44e0d8670139acea5f14c2de32c5e2ddc/packages/react-native-codegen/src/parsers/flow/modules/index.js#L365-L367), [TypeScript](https://github.com/facebook/react-native/blob/00b795642a6562fb52d6df12e367b84674994623/packages/react-native-codegen/src/parsers/typescript/modules/index.js#L400-L402)) into a single emitBoolean function in the parsers-primitives.js file. Use the new function in the parsers.

## Changelog

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[Internal] [Changed] - Extract contents of the case 'BooleanTypeAnnotation' into a single emitBoolean function

Pull Request resolved: #34907

Test Plan:
Run ```yarn jest react-native-codegen```

<img width="803" alt="image" src="https://user-images.githubusercontent.com/34857453/194751101-3b1a619e-332a-43a9-bfa3-35f5869d7c5f.png">

Reviewed By: cipolleschi

Differential Revision: D40212518

Pulled By: cipolleschi

fbshipit-source-id: 9c1462c1e51a1836f963866dc4101f081898df00

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

@@ -0,0 +1,40 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and 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-local
+ * @format
+ * @oncall react_native
+ */
+
+'use-strict';
+
+const {emitBoolean} = require('../parsers-primitives.js');
+
+describe('emitBoolean', () => {
+  describe('when nullable is true', () => {
+    it('returns nullable type annotation', () => {
+      const result = emitBoolean(true);
+      const expected = {
+        type: 'NullableTypeAnnotation',
+        typeAnnotation: {
+          type: 'BooleanTypeAnnotation',
+        },
+      };
+
+      expect(result).toEqual(expected);
+    });
+  });
+  describe('when nullable is false', () => {
+    it('returns non nullable type annotation', () => {
+      const result = emitBoolean(false);
+      const expected = {
+        type: 'BooleanTypeAnnotation',
+      };
+
+      expect(result).toEqual(expected);
+    });
+  });
+});

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

@@ -33,6 +33,7 @@ const {
   isModuleRegistryCall,
 } = require('../utils.js');
 const {unwrapNullable, wrapNullable} = require('../../parsers-commons');
+const {emitBoolean} = require('../../parsers-primitives');
 const {
   IncorrectlyParameterizedFlowGenericParserError,
   MisnamedModuleFlowInterfaceParserError,
@@ -362,9 +363,7 @@ function translateTypeAnnotation(
       });
     }
     case 'BooleanTypeAnnotation': {
-      return wrapNullable(nullable, {
-        type: 'BooleanTypeAnnotation',
-      });
+      return emitBoolean(nullable);
     }
     case 'NumberTypeAnnotation': {
       return wrapNullable(nullable, {

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

@@ -0,0 +1,25 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ * @flow strict
+ */
+
+'use strict';
+
+import type {BooleanTypeAnnotation, Nullable} from '../CodegenSchema';
+
+const {wrapNullable} = require('./parsers-commons');
+
+function emitBoolean(nullable: boolean): Nullable<BooleanTypeAnnotation> {
+  return wrapNullable(nullable, {
+    type: 'BooleanTypeAnnotation',
+  });
+}
+
+module.exports = {
+  emitBoolean,
+};

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

@@ -33,6 +33,7 @@ const {
   isModuleRegistryCall,
 } = require('../utils.js');
 const {unwrapNullable, wrapNullable} = require('../../parsers-commons');
+const {emitBoolean} = require('../../parsers-primitives');
 const {
   IncorrectlyParameterizedTypeScriptGenericParserError,
   MisnamedModuleTypeScriptInterfaceParserError,
@@ -397,9 +398,7 @@ function translateTypeAnnotation(
       });
     }
     case 'TSBooleanKeyword': {
-      return wrapNullable(nullable, {
-        type: 'BooleanTypeAnnotation',
-      });
+      return emitBoolean(nullable);
     }
     case 'TSNumberKeyword': {
       return wrapNullable(nullable, {