Постоянная defaultLevel
Значение по умолчанию для ZLibCodec.level и ZLibEncoder.level.
Реализация
static const int defaultLevel = 6;
© 2012 the Dart project authors
Licensed under the BSD 3-Clause "New" or "Revised" License.
https://api.dart.dev/stable/2.18.5/dart-io/ZLibOption/defaultLevel-constant.html
