improvement: check for SentryTracer type in TTID (#2497)

* fix * update * update CHANGELOG
getsentry · Dec 13, 2024 · a8bff7d · a8bff7d
1 parent 7b4ce83
commit a8bff7d
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 ## Unreleased
 
+### Improvements
+
+- Check for type before casting in TTID ([#2497](https://github.com/getsentry/sentry-dart/pull/2497))
 
 ### Fixes 
 

diff --git a/flutter/lib/src/navigation/time_to_initial_display_tracker.dart b/flutter/lib/src/navigation/time_to_initial_display_tracker.dart
@@ -51,11 +51,13 @@ class TimeToInitialDisplayTracker {
     final _endTimestamp = endTimestamp ?? await determineEndTime();
     if (_endTimestamp == null) return;
 
-    final tracer = transaction as SentryTracer;
+    if (transaction is! SentryTracer) {
+      return;
+    }
 
     final ttidSpan = transaction.startChild(
       SentrySpanOperations.uiTimeToInitialDisplay,
-      description: '${tracer.name} initial display',
+      description: '${transaction.name} initial display',
       startTimestamp: startTimestamp,
     );