docs: function completeFilePath(fileName, currentDirectory) {
      var directory;
      if (!path.isAbsolute(fileName)) {
        fileName = fileName.replace(/\\/g, '/');
        if (fileName.indexOf('./') === 0 ||
            fileName.indexOf('../') === 0) {
          directory = currentDirectory;
        } else {
          directory = processDirectory;
        }
        fileName = path.join(directory, fileName);
      }
      return path.resolve(path.normalize(fileName));
    }