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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`.
  }
}