record name changes in event processing

Author: AbhiPrasad

packages/core/src/baseclient.ts

@@ -35,6 +35,7 @@ import {
   SyncPromise,
   truncate,
   uuid4,
+  timestampInSeconds,
 } from '@sentry/utils';
 
 import { getEnvelopeEndpointWithUrlEncodedAuth } from './api';
@@ -653,6 +654,29 @@ export abstract class BaseClient<O extends ClientOptions> implements Client<O> {
           throw new SentryError('`beforeSend` returned `null`, will not send event.', 'log');
         }
 
+        const transactionInfo = processedEvent.transaction_info;
+        if (
+          processedEvent.type === 'transaction' &&
+          transactionInfo &&
+          processedEvent.transaction &&
+          processedEvent.transaction !== event.transaction
+        ) {
+          const source = 'custom';
+          event.transaction_info = {
+            ...transactionInfo,
+            source,
+            name_changes: [
+              ...transactionInfo.name_changes,
+              {
+                name: processedEvent.transaction,
+                source,
+                timestamp: timestampInSeconds(),
+                propagations: transactionInfo.num_propagations,
+              },
+            ],
+          };
+        }
+
         const session = scope && scope.getSession();
         if (!isTransaction && session) {
           this._updateSessionFromEvent(session, processedEvent);

packages/hub/src/scope.ts

@@ -29,6 +29,7 @@ import {
   isThenable,
   logger,
   SyncPromise,
+  timestampWithMs,
 } from '@sentry/utils';
 
 import { updateSession } from './session';