Extract contents of the case 'NumberTypeAnnotation' into a single emitNumber function (#34908)

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

This PR:
- extracts the content of the case 'NumberTypeAnnotation' ([Flow](https://github.com/facebook/react-native/blob/b444f0e44e0d8670139acea5f14c2de32c5e2ddc/packages/react-native-codegen/src/parsers/flow/modules/index.js#L370-L372), [TypeScript](https://github.com/facebook/react-native/blob/00b795642a6562fb52d6df12e367b84674994623/packages/react-native-codegen/src/parsers/typescript/modules/index.js#L405-L407)) into a single emitNumber function in the parsers-primitives.js file, and uses the new function in the parsers
- unit tests emitNumber function

## Changelog

[Internal] [Changed] - Extract contents of the case 'NumberTypeAnnotation' into a single emitNumber function

Pull Request resolved: https://github.com/facebook/react-native/pull/34908

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

<img width="935" alt="image" src="https://user-images.githubusercontent.com/19575877/194764122-44975a97-3acd-4f27-babe-ddcd58c3ec61.png">

Reviewed By: cipolleschi

Differential Revision: D40214542

Pulled By: cipolleschi

fbshipit-source-id: a7746d3f1dd5f127dc520c6156383b18e00281ec

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

@@ -11,7 +11,11 @@
 
 'use-strict';
 
-const {emitBoolean, emitInt32} = require('../parsers-primitives.js');
+const {
+  emitBoolean,
+  emitNumber,
+  emitInt32,
+} = require('../parsers-primitives.js');
 
 describe('emitBoolean', () => {
   describe('when nullable is true', () => {
@@ -64,3 +68,29 @@ describe('emitInt32', () => {
     });
   });
 });
+
+describe('emitNumber', () => {
+  describe('when nullable is true', () => {
+    it('returns nullable type annotation', () => {
+      const result = emitNumber(true);
+      const expected = {
+        type: 'NullableTypeAnnotation',
+        typeAnnotation: {
+          type: 'NumberTypeAnnotation',
+        },
+      };
+
+      expect(result).toEqual(expected);
+    });
+  });
+  describe('when nullable is false', () => {
+    it('returns non nullable type annotation', () => {
+      const result = emitNumber(false);
+      const expected = {
+        type: 'NumberTypeAnnotation',
+      };
+
+      expect(result).toEqual(expected);
+    });
+  });
+});

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

@@ -33,7 +33,11 @@ const {
   isModuleRegistryCall,
 } = require('../utils.js');
 const {unwrapNullable, wrapNullable} = require('../../parsers-commons');
-const {emitBoolean, emitInt32} = require('../../parsers-primitives');
+const {
+  emitBoolean,
+  emitNumber,
+  emitInt32,
+} = require('../../parsers-primitives');
 const {
   IncorrectlyParameterizedFlowGenericParserError,
   MisnamedModuleFlowInterfaceParserError,
@@ -364,9 +368,7 @@ function translateTypeAnnotation(
       return emitBoolean(nullable);
     }
     case 'NumberTypeAnnotation': {
-      return wrapNullable(nullable, {
-        type: 'NumberTypeAnnotation',
-      });
+      return emitNumber(nullable);
     }
     case 'VoidTypeAnnotation': {
       return wrapNullable(nullable, {

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

@@ -13,6 +13,7 @@
 import type {
   BooleanTypeAnnotation,
   Int32TypeAnnotation,
+  NativeModuleNumberTypeAnnotation,
   Nullable,
 } from '../CodegenSchema';
 
@@ -30,7 +31,16 @@ function emitInt32(nullable: boolean): Nullable<Int32TypeAnnotation> {
   });
 }
 
+function emitNumber(
+  nullable: boolean,
+): Nullable<NativeModuleNumberTypeAnnotation> {
+  return wrapNullable(nullable, {
+    type: 'NumberTypeAnnotation',
+  });
+}
+
 module.exports = {
   emitBoolean,
   emitInt32,
+  emitNumber,
 };

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

@@ -33,7 +33,11 @@ const {
   isModuleRegistryCall,
 } = require('../utils.js');
 const {unwrapNullable, wrapNullable} = require('../../parsers-commons');
-const {emitBoolean, emitInt32} = require('../../parsers-primitives');
+const {
+  emitBoolean,
+  emitNumber,
+  emitInt32,
+} = require('../../parsers-primitives');
 const {
   IncorrectlyParameterizedTypeScriptGenericParserError,
   MisnamedModuleTypeScriptInterfaceParserError,
@@ -399,9 +403,7 @@ function translateTypeAnnotation(
       return emitBoolean(nullable);
     }
     case 'TSNumberKeyword': {
-      return wrapNullable(nullable, {
-        type: 'NumberTypeAnnotation',
-      });
+      return emitNumber(nullable);
     }
     case 'TSVoidKeyword': {
       return wrapNullable(nullable, {