use_if_null_to_convert_nulls_to_bools
Use an if-null operator to convert a 'null' to a 'bool'.
Description
#The analyzer produces this diagnostic when a nullable bool
-valued expression is compared (using ==
or !=
) to a boolean literal.
Example
#The following code produces this diagnostic because the nullable boolean variable b
is compared to true
:
dart
void f(bool? b) {
if (b == true) {
// Treats `null` as `false`.
}
}
Common fixes
#Rewrite the condition to use ??
instead:
dart
void f(bool? b) {
if (b ?? false) {
// Treats `null` as `false`.
}
}
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.