library;
import self as self;
import "dart:core" as core;

typedef Reducer<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 main() → void
  ;