whole_func_string: function fsExistsSync(path) {
    try {
      fs.accessSync(path, fs.F_OK);
    } catch (e) {
      return false;
    }
    return true;
  }
func_code_string: function fsExistsSync(path) {
    try {
      fs.accessSync(path, fs.F_OK);
    } catch (e) {
      return false;
    }
    return true;
  }
func_documentation_string: 判断pages文件夹是否存在