Contents

sized_box_shrink_expand

Contents

Use SizedBox shrink and expand named constructors.

This rule is available as of Dart 2.16.

Details

#

Use SizedBox.shrink(...) and SizedBox.expand(...) constructors appropriately.

Either the SizedBox.shrink(...) or SizedBox.expand(...) constructor should be used instead of the more general SizedBox(...) constructor when one of the named constructors capture the intent of the code more succinctly.

Examples

BAD:

dart
Widget buildLogo() {
  return SizedBox(
    height: 0,
    width: 0,
    child: const MyLogo(),
  );
}
dart
Widget buildLogo() {
  return SizedBox(
    height: double.infinity,
    width: double.infinity,
    child: const MyLogo(),
  );
}

GOOD:

dart
Widget buildLogo() {
  return SizedBox.shrink(
    child: const MyLogo(),
  );
}
dart
Widget buildLogo() {
  return SizedBox.expand(
    child: const MyLogo(),
  );
}

Usage

#

To enable the sized_box_shrink_expand rule, add sized_box_shrink_expand under linter > rules in your analysis_options.yaml file:

analysis_options.yaml
yaml
linter:
  rules:
    - sized_box_shrink_expand