pkg/front_end/testcases/patterns/simple_runtime_test.dart.weak.modular.expect

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

static method test(dynamic x) → dynamic {
  final dynamic #t1 = x;
  final core::bool #t2 = true;
  final dynamic #t3 = #t1;
  if(#t3 is core::List<dynamic> && #t3{core::List<dynamic>}.{core::List::length}{core::int}.{core::num::>=}(1){(core::num) → core::bool}) {
    final dynamic #t4 = #t3{core::List<dynamic>}.{core::List::[]}(0){(core::int) → dynamic};
    final dynamic #t5 = #t4;
    if(#t5 is core::String) {
      #t2 = false;
      {
        core::String y = #t5{core::String};
        {
          return y;
        }
      }
    }
  }
  if(#t2) {
    return null;
  }
}
static method main() → dynamic {
  self::expectEquals(self::test(<core::String>["one", "two", "three"]), "one");
  self::expectEquals(self::test(<core::int>[1, 2, 3]), null);
  self::expectEquals(self::test(<core::bool>[true, false]), null);
  self::expectEquals(self::test(<dynamic>[]), null);
}
static method expectEquals(dynamic x, dynamic y) → dynamic {
  if(!(x =={core::Object::==}{(core::Object) → core::bool} y)) {
    throw "Expected ${x} to be equal to ${y}.";
  }
}