library /*isNonNullableByDefault*/;
import self as self;
import "dart:core" as core;

typedef Reducer<invariant S extends core::Object? = dynamic> = (S%, dynamic) → S%;
class A extends core::Object {
  synthetic constructor •() → self::A
    ;
  method call(dynamic a, dynamic b) → dynamic
    ;
}
static method foo<S extends core::Object? = dynamic>((self::foo::S%, dynamic) → self::foo::S% v) → void
  ;
static method test() → void
  ;
static method main() → dynamic
  ;