[auth] added phone_auth_state_changed event fan out listener

lib/modules/auth/index.js

@@ -37,6 +37,13 @@ export default class Auth extends ModuleBase {
       this._onAuthStateChanged.bind(this),
     );
 
+    this.addListener(
+      // sub to internal native event - this fans out to
+      // public events based on event.type
+      this._getAppEventName('phone_auth_state_changed'),
+      this._onPhoneAuthStateChanged.bind(this),
+    );
+
     this.addListener(
       // sub to internal native event - this fans out to
       // public event name: onIdTokenChanged
@@ -48,6 +55,16 @@ export default class Auth extends ModuleBase {
     this._native.addIdTokenListener();
   }
 
+  /**
+   * Route a phone state change event to the correct listeners
+   * @param event
+   * @private
+   */
+  _onPhoneAuthStateChanged(event: Object) {
+    const eventKey = `phone:auth:${event.requestKey}:${event.type}`;
+    this.emit(eventKey, event.state);
+  }
+
   /**
    * Internal auth changed listener
    * @param auth
@@ -102,7 +119,7 @@ export default class Auth extends ModuleBase {
    * Intercept all user actions and send their results to
    * auth state change before resolving
    * @param promise
-   * @returns {Promise.<TResult>|*}
+   * @returns {Promise.<*>}
    * @private
    */
   _interceptUserValue(promise) {