avoid-misused-wildcard-pattern

v1.7.0

warning

dart 3.0+

pro+

Warns when a wildcard pattern is used in the wrong context.

Example

❌ Bad:

void fn() {
  final animal = 'hello';

  // LINT: Avoid misused wildcard patterns. Try using another pattern instead.
  if (animal.isEmpty case _) {}

  // LINT: Avoid misused wildcard patterns. Try using another pattern instead.
  final (Object _) = animal;

  // LINT: Avoid misused wildcard patterns. Try using another pattern instead.
  if (animal.isEmpty case bool() && _) {}
}

✅ Good:

void fn() {
  final animal = 'hello';

  if (animal.isEmpty case final isEmpty) {} // Correct, different pattern

  final (Object object) = animal;

  if (animal.isEmpty case final bool isEmpty) {}
}

Additional Resources

• CWE-1164: Irrelevant Code

Related Rules

• prefer-wildcard-pattern
• avoid-keywords-in-wildcard-pattern