readMap function

Map<String, Object?> readMap(
  1. Object? value
)

Implementation

Map<String, Object?> readMap(Object? value) {
  if (value is! Map<Object?, Object?>) {
    throw const FormatException('Expected a map.');
  }
  return value.map((Object? key, Object? item) {
    if (key is! String) {
      throw const FormatException('Expected string map keys.');
    }
    return MapEntry<String, Object?>(key, item);
  });
}