Create a function emitFloatProp (#37500)

Summary:
part of #34872

> Create a function emitFloatProp(name: string, optional: boolean) in parser-primitives.js. Factor out the code from [Flow](https://github.com/facebook/react-native/blob/d8ced6f8953cd896471983714e722caf50783960/packages/react-native-codegen/src/parsers/flow/components/events.js#L69-L75) and [TypeScript](https://github.com/facebook/react-native/blob/d8ced6f8953cd896471983714e722caf50783960/packages/react-native-codegen/src/parsers/typescript/components/events.js#L79-L85) into that function. Use that function in the original call site.

bypass-github-export-checks
## Changelog:

[INTERNAL] [ADDED] - emitFloatProp in parser primitves

Pull Request resolved: #37500

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

Reviewed By: dmytrorykun

Differential Revision: D46073527

Pulled By: cipolleschi

fbshipit-source-id: 556b3aa0e0d330929e006758ec88d0a6889f87bc

Author: foestauf

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

@@ -24,6 +24,7 @@ const {
   emitDouble,
   emitDoubleProp,
   emitFloat,
+  emitFloatProp,
   emitNumber,
   emitInt32,
   emitGenericObject,
@@ -711,6 +712,38 @@ describe('emitFloat', () => {
   });
 });
 
+describe('emitFloatProp', () => {
+  describe('when optional is true', () => {
+    it('returns optional FloatTypeAnnotation', () => {
+      const result = emitFloatProp('myProp', true);
+      const expected = {
+        name: 'myProp',
+        optional: true,
+        typeAnnotation: {
+          type: 'FloatTypeAnnotation',
+        },
+      };
+
+      expect(result).toEqual(expected);
+    });
+  });
+
+  describe('when optional is false', () => {
+    it('returns required FloatTypeAnnotation', () => {
+      const result = emitFloatProp('myProp', false);
+      const expected = {
+        name: 'myProp',
+        optional: false,
+        typeAnnotation: {
+          type: 'FloatTypeAnnotation',
+        },
+      };
+
+      expect(result).toEqual(expected);
+    });
+  });
+});
+
 describe('emitMixed', () => {
   describe('when nullable is true', () => {
     it('returns nullable type annotation', () => {

packages/react-native-codegen/src/parsers/flow/components/events.js

@@ -26,6 +26,7 @@ const {getEventArgument} = require('../../parsers-commons');
 const {
   emitBoolProp,
   emitDoubleProp,
+  emitFloatProp,
   emitStringProp,
 } = require('../../parsers-primitives');
 
@@ -55,13 +56,7 @@ function getPropertyType(
     case 'Double':
       return emitDoubleProp(name, optional);
     case 'Float':
-      return {
-        name,
-        optional,
-        typeAnnotation: {
-          type: 'FloatTypeAnnotation',
-        },
-      };
+      return emitFloatProp(name, optional);
     case '$ReadOnly':
       return getPropertyType(
         name,

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

@@ -14,7 +14,9 @@ import type {
   Nullable,
   BooleanTypeAnnotation,
   DoubleTypeAnnotation,
+  EventTypeAnnotation,
   Int32TypeAnnotation,
+  NamedShape,
   NativeModuleAliasMap,
   NativeModuleEnumMap,
   NativeModuleBaseTypeAnnotation,
@@ -33,8 +35,6 @@ import type {
   VoidTypeAnnotation,
   NativeModuleObjectTypeAnnotation,
   NativeModuleEnumDeclaration,
-  NamedShape,
-  EventTypeAnnotation,
 } from '../CodegenSchema';
 import type {Parser} from './parser';
 import type {
@@ -365,6 +365,19 @@ function emitFloat(
   });
 }
 
+function emitFloatProp(
+  name: string,
+  optional: boolean,
+): NamedShape<EventTypeAnnotation> {
+  return {
+    name,
+    optional,
+    typeAnnotation: {
+      type: 'FloatTypeAnnotation',
+    },
+  };
+}
+
 function emitUnion(
   nullable: boolean,
   hasteModuleName: string,
@@ -625,6 +638,7 @@ module.exports = {
   emitDouble,
   emitDoubleProp,
   emitFloat,
+  emitFloatProp,
   emitFunction,
   emitInt32,
   emitNumber,

packages/react-native-codegen/src/parsers/typescript/components/events.js

@@ -28,6 +28,7 @@ const {getEventArgument} = require('../../parsers-commons');
 const {
   emitBoolProp,
   emitDoubleProp,
+  emitFloatProp,
   emitStringProp,
 } = require('../../parsers-primitives');
 function getPropertyType(
@@ -64,13 +65,7 @@ function getPropertyType(
     case 'Double':
       return emitDoubleProp(name, optional);
     case 'Float':
-      return {
-        name,
-        optional,
-        typeAnnotation: {
-          type: 'FloatTypeAnnotation',
-        },
-      };
+      return emitFloatProp(name, optional);
     case 'TSTypeLiteral':
       return {
         name,