cobalt_logger

Adapter for package:logger — the one with the boxed console output — for Cobalt.

Not cobalt_logging. That adapts package:logging, the dart.dev package whose name differs by one letter.

final scope = await CobaltApplication.start(
  root: const AppScope(),
  observers: [CobaltLogObserver(CobaltLoggerSink())],
);

Unlike package:logging, this one prints by itself: the default Logger already has a console output and PrettyPrinter. Pass your own if you have configured one.

Levels

Cobalt's five map one-to-one onto trace, debug, info, warning, error. None of them can land on Level.all, Level.off or Level.nothing, which matters because Logger.log throws ArgumentError on those — a test in this package pins it.