no-equal-switch-expression-cases
preset: recommended
Warns when a switch expression has cases with equal bodies.
Example
❌ Bad:
class WithField {
final String field;
const WithField(this.field);
}
final object = WithField('hello');
final value = switch (object) {
Object() => 'string literal',
WithField() => 'string literal', // LINT
WithField() => object.field,
(WithField f) => f.field,
WithField(:final field) => field,
(WithField(:final field)) => field, // LINT
Object o => o.toString(),
dynamic o => o.toString(), // LINT
};
✅ Good:
class WithField {
final String field;
const WithField(this.field);
}
final object = WithField('hello');
final value = switch (object) {
Object() || WithField() => 'string literal',
WithField() => object.field,
(WithField f) => f.field,
WithField(:final field) => field,
(Object() || WithField()) && final o => o.toString(),
};