groupErrorsByPath function

Map<String, List<ValidationError>> groupErrorsByPath(List<ValidationError> errors)

Groups a list of ValidationErrors by their first path segment.

Errors with a non-empty ValidationError.path are keyed by path[0]. Errors with no path or an empty path are grouped under the empty string key (representing form-level errors).

Implementation

Map<String, List<ValidationError>> groupErrorsByPath(
  List<ValidationError> errors,
) {
  final result = <String, List<ValidationError>>{};
  for (final error in errors) {
    final path = error.path;
    final key = (path != null && path.isNotEmpty) ? path[0] : '';
    result.putIfAbsent(key, () => []).add(error);
  }
  return result;
}