copyMap method

Map<String, dynamic> copyMap(
  1. Object? source
)

Implementation

Map<String, dynamic> copyMap(Object? source) {
  if (source == null) return <String, dynamic>{};
  final copy = _copy(source);
  if (copy is! Map<String, dynamic>) {
    throw FormatException('$resource must be a JSON object.');
  }
  return copy;
}