return _permission;
  },
  has(scope, reference) {
    validateString(scope, 'scope');
    if (reference != null) {
      // TODO: add support for WHATWG URLs and Uint8Arrays.
      if (isBuffer(reference)) {
        validateBuffer(reference, 'reference');
      } else {
        validateString(reference, 'reference');
      }
    }

    return permission.has(scope, reference);
  },
  availableFlags() {
    return [
      '--allow-fs-read',
      '--allow-fs-write',
      '--allow-addons',
      '--allow-child-process',
      '--allow-wasi',
      '--allow-worker',
    ];
  },
});