avoid-positional-record-field-access

added in: 1.5.0

Dart 3.0+

Warns when a record positional field is accessed via $.

Accessing record positional fields via $1, $2, etc. might look like a great shortcut to write less code, but it also brings readability issues for others who read the code.

Instead, consider destructuring (final (x, y) = ...) the record first or converting its fields to named fields.

Example

❌ Bad:

void function() {
  final record = (
    'hello',
    'world',
  );

  final first = record.$1; // LINT
  final second = record.$2; // LINT
}

✅ Good:

void function() {
  final record = (
    first: 'hello',
    second: 'world',
  );

  final first = record.first;
  final second = record.second;

  final another = (
    'hello',
    'world',
  );

  final (first, second) = another;
}

Example​

Example