Method error

src/backend/HTML5FS.ts:243–245

(err: DOMException)

      cb();
    };
    const error = (err: DOMException): void => {
      cb(convertError(err, "/", true));
    };
    if (this.type === global.PERSISTENT) {
      _requestQuota(this.type, this.size, (granted: number) => {
        _getFS(this.type, granted, success, error);