anchor.diff:    return remoteValues;
   }
   
  -
  -
  +// Server support methods
  +void addCorsHeaders(io.HttpResponse res) {
  +  res.headers.add("Access-Control-Allow-Origin", "*");
  +  res.headers.add("Access-Control-Allow-Methods", "POST, GET, OPTIONS");
  +  res.headers.add("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
  +}
positive.code: 
    await setHighlights(isolateRef, []);
  
  
  //  var m = hotRunner.currentView.uiIsolate.flutterDebugReturnElementTree();
  //  print(await m);
  
    // Delay before printing to prevent text collision in console
    new Future.delayed(new Duration(seconds: 5)).then((_) async {
  
      await setHighlights(isolateRef, []);
      await new Future.delayed(new Duration(seconds: 2));
      await setHighlights(isolateRef, [4]);
      await new Future.delayed(new Duration(seconds: 2));
      await setHighlights(isolateRef, [5]);
      await new Future.delayed(new Duration(seconds: 2));
      await setHighlights(isolateRef, [4, 5]);
    });
  
    // Update the running application whenever the diagFile changes
    io.File diagFile = new io.File(diagPath);
    StreamSubscription<io.FileSystemEvent> subscription;
    void watchDiagFile() {
      subscription = diagFile.watch().listen((io.FileSystemEvent event) async {
        print("attempting restart");
        await hotRunner.restart(fullRestart: true);
        print("restart complete");
  
        // If diagFile was deleted when wait for it to be recreated
        // before watching the file again
        if (event.type == io.FileSystemEvent.DELETE) {
          subscription?.cancel();
          subscription = null;
          while (running && !await diagFile.exists()) {
            await new Future.delayed(new Duration(milliseconds: 10));
          }
  
          // If application has not exited, then watch the diagFile again
          if (running) watchDiagFile();
        }
      });
    }
  
    watchDiagFile();
  
    // Cleanup when the application exits
    run.then((int exitCode) {
      print('application exit: $exitCode');
      subscription?.cancel();
      subscription = null;
      running = false;
    });
  }
  
  // UI Support methods
  
  const DIAGNOSTICS_PATH = '/lib/diagnostics.dart';
  
  setHighlights(VMIsolateRef isolateRef, List<int> highlightIds) async {
    VMLibrary lib = await _getLibrary(isolateRef, DIAGNOSTICS_PATH);
  
negative.code: import 'package:path/path.dart' as path;
  import 'package:vm_service_client/vm_service_client.dart';
  
  
  const DIAGNOSTICS_PATH = '/lib/diagnostics.dart';
  
  main(List<String> args) async {
    String flutterRoot = '../../GitRepos/flutter';
    String target = "lib/myapp.dart";
    String route = "/";
    String diagPath = "lib/diagnostics.dart";
    const int SERVER_PORT = 9998;
  
    // Initialize globals.
    Cache.flutterRoot = path.normalize(path.absolute(flutterRoot));
  