avoid-duplicate-constant-values

added in: 1.22.0

warning

Pro+

Warns when a class or enum declaration has several constants with the same primitive values.

Example

❌ Bad:

enum MyEnum {
  a('hi'),
  b('hi'), // LINT
  c('another');

  final String value;

  const MyEnum(this.value);
}

class RuleType {
  final String value;

  const RuleType._(this.value);

  static const common = RuleType._('common');
  static const flutter = RuleType._('common'); // LINT
}

✅ Good:

enum MyEnum {
  a('hi'),
  b('hello'),
  c('another');

  final String value;

  const MyEnum(this.value);
}

class RuleType {
  final String value;

  const RuleType._(this.value);

  static const common = RuleType._('common');
  static const flutter = RuleType._('flutter');
}