anchor.diff:  
   final NumberFormat _nf = new NumberFormat.decimalPattern();
   
  +final String SPARK_NIGHTLY_KEY
  +    = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwqXKrcvbi1a1IjFM5COs07Ee9xvPyOSh9dhEF6kwBGjAH6/4F7MHOfPk+W04PURi707E8SsS2iCkvrMiJPh4GnrZ3fWqFUzlsAcUljcYbkyorKxglwdZEXWbFgcKVR/uzuzXD8mOcuXRLu0YyVSdEGzhfZ1HkeMQCKEncUCL5ziE4ZkZJ7I8YVhVG+uiROeMg3zjxxSQrYHOfG5HOqmVslRPCfyiRbIHH3JPD0lax5FudngdKy0+1nkkqVJCpRSf75cRRnxGPjdEvNzTEFmf5oGFxSVs7iXoVQvNXB35Qfyw5rV6N+JyERdu6a7xEnz9lbw41m/noKInlfP+uBQuaQIDAQAB";
  +
  +final String SPARK_RELEASE_KEY
  +    = "";
  +
   /**
    * Manages all the launches and calls the appropriate delegate.
    */
  
positive.code: library spark.launch;
  
  import 'dart:async';
  import 'dart:html' show window;
  
  import 'package:chrome/chrome_app.dart' as chrome;
  
negative.code:   }
  }
  
  /**
   * Pretty print Json text.
   *
   * Usage:
   *     String str = new JsonPrinter().print(jsonObject);
   */
  class JsonPrinter {
    String _in = '';
  
    JsonPrinter();
  
    /**
     * Given a structured, json-like object, print it to a well-formatted, valid
     * json string.
     */
    String print(dynamic json) {
      return _print(json) + '\n';
    }
  
    String _print(var obj) {
      if (obj is List) {
        return _printList(obj);
      } else if (obj is Map) {
        return _printMap(obj);
      } else if (obj is String) {
        return '"${obj}"';
      } else {
        return '${obj}';
      }
    }
  
    String _printList(List list) {
      return "[${_indent()}${list.map(_print).join(',${_newLine}')}${_unIndent()}]";
    }
  
    String _printMap(Map map) {
      return "{${_indent()}${map.keys.map((key) {
        return '"${key}": ${_print(map[key])}';
      }).join(',${_newLine}')}${_unIndent()}}";
    }
  
    String get _newLine => '\n${_in}';
  
    String _indent() {
      _in += '  ';
      return '\n${_in}';
    }
  
    String _unIndent() {
      _in = _in.substring(2);
      return '\n${_in}';
    }
  }
  
  String _getPath(HttpRequest request) => request.uri.pathSegments.join('/');
  