toNullableMap method
Implementation
Map<String, JSAny?>? toNullableMap() {
if (isUndefinedOrNull) return null;
if (!isA<JSObject>() || isA<JSArray>()) return null;
final obj = this as JSObject;
final keys = _objectKeys(obj).toDart;
return {
for (final k in keys) k.toDart: obj.getProperty(k),
};
}