anchor.diff:  import 'package:shelf_cors/shelf_cors.dart' as shelf_cors;
   
   final String buildDirName = 'web_transformed';
  +
  +Process startProces, endProces;
   
   void main(List<String> args) {
     var parser = new ArgParser()
  
positive.code:   final List<FileSystemEntity> L = libDir.listSync(recursive: true);
    final bool buildDirExists = buildDir.existsSync();
    
    L.retainWhere(
      (FileSystemEntity FSE) {
        if (FSE.path.contains('packages') || FSE.path.contains('.git') || FSE.path.contains('.pub')) return false;
  
negative.code:   io.serve(handler, 'localhost', port).then((server) {
      print('Serving at http://${server.address.host}:${server.port}');
    }).catchError((error) => print(error));
    
    Process.start('C:\\dart\\dart-sdk\\bin\\pub.bat', <String>['serve', 'web', '--port=8081'], workingDirectory: Directory.current.path).then(
      (Process P) {
        startProces = P;
      
        Process.start('C:\\dart\\chromium\\chrome.exe', <String>['http://localhost:8081/test_transform.html']);
      }
    );
  }
  
  Future<shelf.Response> _decodeJSON(shelf.Request request) {
  