anchor.diff:      exit(1);
     }
     String outputPath = argResults[_kOptionOutput];
  -  final int result = await build(
  +  final int buildResult = await build(
       snapshotterPath: argResults[_kOptionSnapshotter],
       mainPath: argResults[_kOptionTarget],
       outputPath: outputPath,
  
positive.code: const String _kOptionTarget = 'target';
  const String _kOptionPackages = 'packages';
  const String _kOptionOutput = 'output-file';
  const String _kOptionSnapshot = 'snapshot';
  const String _kOptionDepfile = 'depfile';
  const String _kOptionWorking = 'working-dir';
  
negative.code:     ..addOption(_kOptionTarget, help: 'The entry point into the app')
      ..addOption(_kOptionPackages, help: 'The .packages file')
      ..addOption(_kOptionOutput, help: 'The generated flx file')
      ..addOption(_kOptionHeader, help: 'The header of the flx file')
      ..addOption(_kOptionSnapshot, help: 'The generated snapshot file')
      ..addOption(_kOptionDepfile, help: 'The generated dependency file')
      ..addOption(_kOptionWorking,
  