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

static method bar(core::int* a, core::List<core::int*>* b) → dynamic {
  self::expect(1.{core::int::unary-}(){() →* core::int*}, a);
  self::expect(1.{core::int::unary-}(){() →* core::int*}, b.{core::List::[]}(0){(core::int*) →* core::int*}.{core::num::-}(2){(core::num*) →* core::int*});
}
static method foo(core::int* x) → dynamic async /* futureValueType= dynamic */ 
  return self::bar(x.{core::num::-}(1){(core::num*) →* core::int*}, !(x == null) ?{core::List<core::int*>*} <core::int*>[x.{core::num::+}(1){(core::num*) →* core::int*}, x.{core::num::+}(2){(core::num*) →* core::int*}, await null] : null);
static method main() → void async /* futureValueType= void */ 
  return await self::foo(0);
static method expect(dynamic expected, dynamic actual) → dynamic {
  if(!(expected =={core::Object::==}{(core::Object*) →* core::bool*} actual))
    throw "Expected ${expected}, actual ${actual}";
}