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

class A extends core::Object {
  synthetic constructor •() → self::A
    : super core::Object::•()
    ;
}
static method h1<X extends asy::Future<self::A>?>(self::h1::X% x) → asy::Future<void> async /* emittedValueType= void */ {
  self::A? x2 = await x /* runtimeCheckType= asy::Future<self::A?> */ ;
  self::expectEquals(x2, null);
  self::expectEquals(<self::A?>[x2].{core::Object::runtimeType}{core::Type}, #C1);
  x2 = null;
  x2 = new self::A::•();
}
static method main() → void async /* emittedValueType= void */ 
  return await self::h1<Null>(null);
static method expectEquals(dynamic a, dynamic b) → dynamic {
  if(!(a =={core::Object::==}{(core::Object) → core::bool} b)) {
    throw "Expected '${a}' to be equal to '${b}'.";
  }
}

constants  {
  #C1 = TypeLiteralConstant(core::List<self::A?>*)
}