ConstReadonlyDebug: LevelDiagnostic detail for development.
ReadonlyError: LevelA failure that needs attention.
ReadonlyInfo: LevelA normal, noteworthy event.
ReadonlyTrace: LevelFine-grained detail, useful only when chasing a specific problem.
ReadonlyWarn: LevelSomething unexpected that the node recovered from.
How urgent an event is.
Provided as a runtime object plus a matching string-union type so it works as both a value (
Level.Warn) and a type annotation.