IsDebugOrHigher returns whether or not the current log level is debug or trace.

LogLevel returns the current log level string based the environment vars.

LogOutput determines where we should send logs (if anywhere) and the log level.

SetOutput checks for a log destination with LogOutput, and calls log.SetOutput with the result.

SetTestOutput is equivalent to SetOutput, but declares itself a test helper so it doesn't show up as the source of errors when testing.

Set to True.

Set to a file.