code: function watchPath(path, ignored) {
      if (_watcherMap.hasOwnProperty(path)) {
          return;
      }
      return _watcherImpl.watchPath(path, ignored, _watcherMap, _domainManager);
  }
docs: Watch a file or directory.
  @param {string} path File or directory to watch.
  @param {Array<string>} ignored List of entries to ignore during watching.