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

static method main() → void {
  try {
    has-declared-initializer core::Object? b;
    {
      final synthesized Never #0#0 = throw <core::int, core::int>{42: 42};
      if(!#0#0)
        throw{for-error-handling} new core::StateError::•("Pattern matching error");
    }
  }
  on core::Object catch(final core::Object e) {
    core::print(e);
    return;
  }
  throw "Missing exception";
}