A practical crash triage workflow for iOS and Android teams: get readable stack traces with dSYMs and R8 mapping files, group crashes sensibly, reproduce with context, fix with a test and confirm the fix per release with staged rollouts.
After upgrading to React Native 0.79 with the New Architecture on by default, our in-house printer module came back null on iOS and crashed on Android. Bridge-only registration and direct bridge calls were the cause; here is the migration path.
Event countdowns showed NaN days for iPhone users while Chrome was fine. Our API sent dates like 2024-12-3 9:05:00, which only some engines accept. We switched to strict ISO 8601 with an offset and stopped trusting Date parsing.
A routine iOS release bounced from App Store Connect with ITMS-91053 for UserDefaults, file timestamps and system boot time. Our own code needed reasons, and an old statically linked SDK shipped no manifest at all. Here is the full cleanup.