Loggers should be:
private: not accessible outside of their parent classes. If another class needs to log something, it should instantiate its own
static: not dependent on an instance of a class (an object). When logging something, contextual information can of course be
provided in the messages but the logger should be created at class level to prevent creating a logger along with each object.
const: created once and only once per class.
Noncompliant Code Example
With the default regular expression
public const logger:ILogger = LogUtil.getLogger(MyClass);
private static const LOG:ILogger = LogUtil.getLogger(MyClass);