code: function () {
  
          var st     = stack()[2],
              result = {};
  
          result.filename = path.basename(st.getFileName());
          result.line = st.getLineNumber();
  
          return result;
      }
docs: getLocation
  
  Get location of log.
  ie. filename and line number
  
  @return {Obsject}
  @return {String}     filename
  @return {Number}     line