move-variable-outside-iteration

added in: 1.13.0

warning

🛠

Pro+

Warns when a variable does not depend on the outer loop and can be moved out.

❌ Bad:

void fn() {
  final list = [1, 2, 3];

  for (final element in list) {
    final reversed = list.reversed; // LINT

    ...
  }
}

✅ Good:

void fn() {
  final list = [1, 2, 3];
  final reversed = list.reversed;

  for (final element in list) {
    ...
  }
}