Add phone symbols to react native export (#5673)

* Add phone symbols to react native export

* Add changeset

* Add comment to signInWithPhoneNumber

Author: sam-gc

.changeset/perfect-ducks-deny.md

@@ -0,0 +1,5 @@
+---
+"@firebase/auth": patch
+---
+
+Export Phone sign in functionality in React Native entrypoint (except for RecaptchaVerifier)

packages/auth/index.rn.ts

@@ -35,6 +35,21 @@ import { getReactNativePersistence } from './src/platform_react_native/persisten
 // Core functionality shared by all clients
 export * from './index.shared';
 
+// Export some Phone symbols
+// providers
+export { PhoneAuthProvider } from './src/platform_browser/providers/phone';
+
+// strategies
+export {
+  signInWithPhoneNumber,
+  linkWithPhoneNumber,
+  reauthenticateWithPhoneNumber,
+  updatePhoneNumber
+} from './src/platform_browser/strategies/phone';
+
+// MFA
+export { PhoneMultiFactorGenerator } from './src/platform_browser/mfa/assertions/phone';
+
 /**
  * An implementation of {@link Persistence} of type 'LOCAL' for use in React
  * Native environments.

packages/auth/src/platform_browser/strategies/phone.ts

@@ -78,6 +78,9 @@ class ConfirmationResultImpl implements ConfirmationResult {
  *
  * For abuse prevention, this method also requires a {@link ApplicationVerifier}.
  * This SDK includes a reCAPTCHA-based implementation, {@link RecaptchaVerifier}.
+ * This function can work on other platforms that do not support the
+ * {@link RecaptchaVerifier} (like React Native), but you need to use a
+ * third-party {@link ApplicationVerifier} implementation.
  *
  * @example
  * ```javascript