A logger that does nothing on a log message.
Log a message at the 'debug' level.
The message to log.
Log a message at the 'error' level.
Log a message at the 'info' level.
Log the given message at the given level. If the internal level is higher than the given level, the message may be voided.
The level to log at.
Optional
Log a message at the 'silly' level.
Log a message at the 'verbose' level.
Log a message at the 'warn' level.
A logger that does nothing on a log message.