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avoid-long-records

added in: 1.5.0
warning
⚙️
Dart 3.0+
Pro+

Records with high number of fields are difficult to reuse and maintain because they are usually responsible for more than one thing.

Consider creating a class or splitting the record instead.

⚙️ Config​

Set max-number (default is 6) to configure the number of record fields after which the rule should trigger.

analysis_options.yaml
dart_code_metrics:
  rules:
    - avoid-long-records:
        max-number: 6

Example​

❌ Bad:

final record =
      ('hello', 'world', 'and', 'this', 'is', 'also', 'a field'); // LINT: Avoid records with too many fields. Try reducing the number of fields.

class MyClass {
  final (String, {int named}) field;

  const MyClass(this.field);

  // LINT: Avoid records with too many fields. Try reducing the number of fields.
  (int, int, String, int, double, num, num) getData() => (...);
}

✅ Good:

final record = ('hello', 'world', 'and');
final another = ('this', 'is', 'also', 'a field');

class MyClass {
  final (String, {int named}) field;

  const MyClass(this.field);

  MyDataClass getData() => (...);
}