test(app-distribution): ensure modular API are exported properly (#7933)

packages/app-distribution/__tests__/app-distribution.test.ts

@@ -1,6 +1,13 @@
 import { describe, expect, it } from '@jest/globals';
 
-import { firebase } from '../lib';
+import {
+  firebase,
+  getAppDistribution,
+  isTesterSignedIn,
+  signInTester,
+  checkForUpdate,
+  signOutTester,
+} from '../lib';
 
 describe('appDistribution()', function () {
   describe('namespace', function () {
@@ -10,4 +17,26 @@ describe('appDistribution()', function () {
       expect(app.appDistribution().app).toEqual(app);
     });
   });
+
+  describe('modular', function () {
+    it('`getAppDistribution` function is properly exposed to end user', function () {
+      expect(getAppDistribution).toBeDefined();
+    });
+
+    it('`isTesterSignedIn` function is properly exposed to end user', function () {
+      expect(isTesterSignedIn).toBeDefined();
+    });
+
+    it('`signInTester` function is properly exposed to end user', function () {
+      expect(signInTester).toBeDefined();
+    });
+
+    it('`checkForUpdate` function is properly exposed to end user', function () {
+      expect(checkForUpdate).toBeDefined();
+    });
+
+    it('`signOutTester` function is properly exposed to end user', function () {
+      expect(signOutTester).toBeDefined();
+    });
+  });
 });

packages/app-distribution/lib/index.d.ts

@@ -145,6 +145,8 @@ export const firebase: ReactNativeFirebase.Module & {
 
 export default defaultExport;
 
+export * from './modular';
+
 /**
  * Attach namespace to `firebase.` and `FirebaseApp.`.
  */