avoid-nullable-tostring
Warns when the toString method is called on a nullable value.
Calling toString on a nullable value can result in an unexpected output (e.g. 'null').
Example
❌ Bad:
void fn(String? nullableValue) {
// LINT: Avoid calling 'toString' on nullable targets.
// Try replacing with the null-aware '?.toString'.
print(nullableValue.toString());
}
✅ Good:
void fn(String? nullableValue) {
print(nullableValue?.toString());
}