exists method

@override Future<Result<bool>> exists(String path)

Reports whether path resolves to anything.

Implementation

@override
Future<Result<bool>> exists(String path) async {
  if (_existsResults.isNotEmpty) {
    return _existsResults.removeFirst();
  }
  final String normalized = normalizePath(path);
  return Ok<bool>(
    _files.containsKey(normalized) || _directories.contains(normalized),
  );
}