package:dart_style v3.1.8

Style changes

• Format extension type representation clauses the same way primary constructor
  formal parameter lists are formatted. This rarely makes a difference but
  produces better formatting when the representation type is long and there are
  other clauses on the extension type, as in:

  // Before:
  extension type JSExportedDartFunction._(
    JSExportedDartFunctionRepType _jsExportedDartFunction
  )
      implements JSFunction {}
  // After:
  extension type JSExportedDartFunction._(
    JSExportedDartFunctionRepType _jsExportedDartFunction
  ) implements JSFunction {}

  This change is not language versioned. (The old style is always worse, and
  continuing to support it would add complexity to the formatter.)
• Force blank lines around a mixin or extension type declaration if it doesn't
  have a ; body:

  // Before:
  int above;
  extension type Inches(int x) {}
  mixin M {}
  int below;
  // After:
  int above;
  extension type Inches(int x) {}
  mixin M {}
  int below;

  The formatter already forces blank lines around class, enum, and extension
  declarations. Mixins and extension types were overlooked. This makes them
  consistent. This style change is language versioned and only affects
  libraries at 3.13 or higher.
  Note that the formatter allows classes and extension types whose body is ;
  to not have a blank line above or below them.

Internal changes

• Support upcoming Dart language version 3.13.
• Support formatting primary constructors.
• Require analyzer: '^12.0.0'.