unnecessary_nullable_for_final_variable_declarations

Type could be non-nullable.

The analyzer produces this diagnostic when a final field or variable has a nullable type but is initialized to a non-nullable value.

The following code produces this diagnostic because the final variable i has a nullable type (int?), but can never be null:

final int? i = 1;

Make the type non-nullable:

final int i = 1;

Unless stated otherwise, the documentation on this site reflects Dart 3.7.3. Page last updated on 2025-05-08. View source or report an issue.