library /*isNonNullableByDefault*/;
//
// Problems in library:
//
// pkg/front_end/testcases/patterns/object_pattern_errors.dart:12:14: Error: Expected 0 type arguments.
//   if (x case A<int>()) {} // Error.
//              ^
//
// pkg/front_end/testcases/patterns/object_pattern_errors.dart:15:14: Error: Expected 1 type arguments.
//   if (x case B<String, num>()) {} // Error.
//              ^
//
// pkg/front_end/testcases/patterns/object_pattern_errors.dart:16:16: Error: The getter name is not specified explicitly, and the pattern is not a variable. Try specifying the getter name explicitly, or using a variable pattern.
//   if (x case A(: 5)) {} // Error
//                ^
//
// pkg/front_end/testcases/patterns/object_pattern_errors.dart:17:16: Error: A pattern field in an object pattern must be named.
// Try adding a pattern name or ':' before the pattern.
//   if (x case A(5)) {} // Error
//                ^
//
// pkg/front_end/testcases/patterns/object_pattern_errors.dart:18:20: Error: A pattern field in an object pattern must be named.
// Try adding a pattern name or ':' before the pattern.
//   if (x case A(var a)) {} // Error
//                    ^
//
import self as self;
import "dart:core" as core;

typedef B<unrelated X extends core::Object? = dynamic> = self::A;
class A extends core::Object {
  field core::int? field = null;
  synthetic constructor •() → self::A
    : super core::Object::•()
    ;
}
static method test(dynamic x) → dynamic {
  {
    final synthesized dynamic #0#0 = x;
    if(#0#0 is{ForNonNullableByDefault} invalid-type) {
    }
  }
  {
    final synthesized invalid-type #1#0 = x{invalid-type};
    if(#1#0 is{ForNonNullableByDefault} self::A) {
    }
  }
  {
    final synthesized self::A #2#0 = x{self::A};
    if(true) {
    }
  }
  {
    final synthesized self::A #3#0 = x{self::A};
    if(true) {
    }
  }
  {
    final synthesized invalid-type #4#0 = x{invalid-type};
    if(#4#0 is{ForNonNullableByDefault} self::A) {
    }
  }
  {
    final synthesized self::A #5#0 = x{self::A};
    if(true) {
    }
  }
  {
    final synthesized self::A #6#0 = x{self::A};
    if(true) {
    }
  }
}
static method _#B#new#tearOff<unrelated X extends core::Object? = dynamic>() → self::A
  return new self::A::•();