Profiles not sent to Sentry.

[rodolfoBee]

What React Native libraries do you use?

Expo (mobile only)

Are you using sentry.io or on-premise?

sentry.io (SaS)

@sentry/react-native SDK Version

6.14.0

How does your development environment look like?

System:
  OS: macOS 15.4.1
  CPU: (11) arm64 Apple M3 Pro
  Memory: 4.41 GB / 36.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 22.11.0
    path: /usr/local/bin/node
  Yarn:
    version: 1.22.22
    path: /usr/local/bin/yarn
  npm:
    version: 10.9.0
    path: /usr/local/bin/npm
  Watchman: Not Found
Managers:
  CocoaPods:
    version: 1.16.2
    path: /opt/homebrew/opt/ruby/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 24.4
      - iOS 18.4
      - macOS 15.4
      - tvOS 18.4
      - visionOS 2.4
      - watchOS 11.4
  Android SDK: Not Found
IDEs:
  Android Studio: 2024.2 AI-242.23339.11.2421.12550806
  Xcode:
    version: 16.3/16E140
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 21.0.6
    path: /usr/bin/javac
  Ruby:
    version: 3.4.2
    path: /opt/homebrew/opt/ruby/bin/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 18.0.0
    wanted: ^18.0.0
  react:
    installed: 19.0.0
    wanted: 19.0.0
  react-native:
    installed: 0.79.2
    wanted: 0.79.2
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: Not found
  newArchEnabled: Not found
iOS:
  hermesEnabled: Not found
  newArchEnabled: Not found

Sentry.init()

Sentry.init({
  dsn: '....',
  sendDefaultPii: true,
  enableNative: true,

  replaysSessionSampleRate: 0.1,
  replaysOnErrorSampleRate: 1,
  tracesSampleRate:1.0,
  profilesSampleRate: 1.0,
  
  debug:true,
  integrations: [
    Sentry.mobileReplayIntegration(),
    Sentry.feedbackIntegration(),
    navigationIntegration,
  ],
});

export default Sentry.wrap(function RootLayout() {
  const colorScheme = useColorScheme();
  const [loaded] = useFonts({
    SpaceMono: require('../assets/fonts/SpaceMono-Regular.ttf'),
  });
  const ref = useNavigationContainerRef();

  React.useEffect(() => {
    if (ref) {
      navigationIntegration.registerNavigationContainer(ref);
    }
  }, [ref]);

  if (!loaded) {
    // Async font loading only occurs in development.
    return null;
  }

Steps to Reproduce

run:
npx create-expo-app@latest
npx @sentry/wizard@latest -i reactNative

add a custom transaction:

      const result = Sentry.startSpan({ name: "Bubble" }, () => {
        var arr = Array.from({length: 10000}, () => Math.floor(Math.random() * 4000));
          for (var i = 0; i < arr.length; i++) {
          // Last i elements are already in place  
          for (var j = 0; j < (arr.length - i - 1); j++) {
              if (arr[j] > arr[j + 1]) {
                  var temp = arr[j]
                  arr[j] = arr[j + 1]
                  arr[j + 1] = temp
              }
          }
      }

Expected Result

The transaction and a profile are reported to Sentry.

Actual Result

Only the transaction is sent to Sentry.

logs: logs.txt

[krystofwoldrich]

Based on the logs.txt I see that the application is running in Expo Go, where Profiling is not available.

 INFO  Sentry Logger [info]: Offline caching, native errors features are not available in Expo Go.

---

The transaction should be visible in Sentry based on the logs.

 LOG  Sentry Logger [log]: [Tracing] Starting sampled root span
  op: default
  name: Bubble
  ID: 8e10e8aa56d5bf8c

Note that startSpan only creates transaction when there is no other active transaction, for example navigation. If there is navigation transaction the Bubble will be a span in the navigation transaction.

const result = Sentry.startSpan({ name: "Bubble" }, () => {});

[krystofwoldrich]

Closing this due to inactivity. If this is still an issue feel free to comment here or open a new issue if the context changed.