[RUM-9771] Fix rum sessionIdListener for new architecture

packages/core/src/DdSdkReactNative.tsx

@@ -67,6 +67,7 @@ export class DdSdkReactNative {
         await DdSdkReactNative.initializeNativeSDK(configuration, {
             initializationModeForTelemetry: 'LEGACY'
         });
+
         DdSdkReactNative.enableFeatures(configuration);
     };
 
@@ -77,6 +78,7 @@ export class DdSdkReactNative {
         }
     ): Promise<void> => {
         registerRumSessionIdListener();
+
         if (GlobalState.instance.isInitialized) {
             InternalLog.log(
                 "Can't initialize Datadog, SDK was already initialized",

packages/core/src/rum/sessionId/sessionIdHelper.ts

@@ -3,9 +3,12 @@
  * This product includes software developed at Datadog (https://www.datadoghq.com/).
  * Copyright 2016-Present Datadog, Inc.
  */
+/* eslint-disable @typescript-eslint/no-var-requires */
+/* eslint-disable global-require */
 import { NativeModules } from 'react-native';
 
 import { createNativeEventEmitterForModule } from '../../sdk/EventEmitter/EventEmitter';
+import type { RumSessionStartedEvent } from '../../specs/NativeDdSdk';
 
 const RUM_SESSION_STARTED_EVENT_KEY = 'RumSessionStarted';
 
@@ -17,16 +20,26 @@ let cachedRumSessionId: string | null;
  * the cached Session ID.
  */
 export const registerRumSessionIdListener = () => {
-    const eventEmitter = createNativeEventEmitterForModule(NativeModules.DdSdk);
-    if (eventEmitter.listenerCount(RUM_SESSION_STARTED_EVENT_KEY) > 0) {
-        return;
+    const DdSdkModule =
+        NativeModules.DdSdk || require('../../specs/NativeDdSdk').default;
+    const eventEmitter = createNativeEventEmitterForModule(DdSdkModule);
+    const listenerCount = eventEmitter.listenerCount(
+        RUM_SESSION_STARTED_EVENT_KEY
+    );
+
+    // Always remove old listeners to avoid potential issues with invalid bridge references
+    if (listenerCount > 0) {
+        removeRumSessionIdListeners();
     }
 
-    eventEmitter.addListener(RUM_SESSION_STARTED_EVENT_KEY, (event: any) => {
-        const field = 'sessionId';
-        const sessionId = event[field] as string | null;
-        cachedRumSessionId = sessionId;
-    });
+    eventEmitter.addListener(
+        RUM_SESSION_STARTED_EVENT_KEY,
+        (event: RumSessionStartedEvent) => {
+            const field: keyof RumSessionStartedEvent = 'sessionId';
+            const sessionId = event[field];
+            cachedRumSessionId = sessionId;
+        }
+    );
 };
 
 /**

packages/core/src/specs/NativeDdSdk.ts

@@ -11,6 +11,11 @@ import { TurboModuleRegistry } from 'react-native';
 /**
  * Do not import this Spec directly, use DdNativeSdkType instead.
  */
+
+export type RumSessionStartedEvent = {
+    sessionId: string | null;
+};
+
 export interface Spec extends TurboModule {
     readonly getConstants: () => {};
 
@@ -81,6 +86,7 @@ export interface Spec extends TurboModule {
      * https://github.com/react-native-community/RNNewArchitectureLibraries/tree/feat/swift-event-emitter?tab=readme-ov-file#codegen-update-codegen-specs)
      */
     addListener: (eventType: string) => void;
+
     removeListeners: (count: number) => void;
 }