What the developer wrote
Authored by Omar
minor fix [skip ci]
What changed, and why it matters
This commit makes a tiny defensive change in the wallet's balance display code. It swaps two uses of elementAt(0) for elementAtOrNull(0), which prevents the app from crashing if the balance list is unexpectedly empty. There is no indication this fixes an exploitable security vulnerability; it appears to be a routine robustness fix for a user-interface crash.
Treat as a routine stability fix. No urgent security action is warranted based on this diff alone. If the empty-list case was reachable, verify that downstream UI handles a null balance gracefully.
Security signals we found
Defensive null-safety hardening
No input validation, authentication, cryptography, or transaction logic modified
No memory-unsafe operations or external data parsing introduced
Evidence from the diff
In lib/view_model/dashboard/balance_view_model.dart, two calls to formattedBalances.elementAt(0) are replaced with formattedBalances.elementAtOrNull(0). The former throws a RangeError when the list is empty; the latter returns null. The method already returns a nullable type, so the change is API-compatible and simply avoids an unhandled exception when no formatted balances exist. No other logic changes.
Changed components
lib/view_model/dashboard/balance_view_model.dartInspect captured patch +2 / −2
diff --git a/lib/view_model/dashboard/balance_view_model.dart b/lib/view_model/dashboard/balance_view_model.dart
index 262dc02b..41d5b21d 100644
--- a/lib/view_model/dashboard/balance_view_model.dart
+++ b/lib/view_model/dashboard/balance_view_model.dart
@@ -427,10 +427,10 @@ abstract class BalanceViewModelBase with Store {
if (wallet.walletInfo.favoriteTokenAddress != null) {
return formattedBalances.firstWhereOrNull((item) => (getTokenAddressBasedOnWallet(item.asset) ==
wallet.walletInfo.favoriteTokenAddress)) ??
- formattedBalances.elementAt(0);
+ formattedBalances.elementAtOrNull(0);
}
- return formattedBalances.elementAt(0);
+ return formattedBalances.elementAtOrNull(0);
}
String? getTokenAddressBasedOnWallet(CryptoCurrency asset) {
Why this scored 20/100
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