A minimal logger class, suitable mostly for console utilities rather than enterprise-grade applications.

Features

Comprises a single class that, by default, allows just three levels of the output: quiet (none), normal (data, errors and info) and verbose (maximum).

Usage

The usage is pretty straightforward. Please see the sample code below or in the example folder of the GitHub repository.

import 'package:thin_logger/thin_logger.dart';

/// Return the logger level based on CLI option
///
int parseLevel(String optLevel) {
  switch (optLevel) {
    case '-q':
      return Logger.levelQuiet;
    case '-v':
      return Logger.levelVerbose;
    default:
      return Logger.levelDefault;
  }
}

/// The application entry point
///
void main(List<String> args) {
  // Initializing the logger object
  //
  var level = parseLevel(args.isEmpty ? '' : args[0]);
  var logger = Logger(level);

  // Printing various-level data
  //
  logger.out('Plain data');
  logger.error('ERR');
  logger.info('INF');

  // This is the most expensive call, as every string will be interpolated
  // (substituted with the values like 'abc $d ef ${g.h}') unconditionally,
  // and the respective Logger method will be called
  //
  if (logger.isVerbose) {
    logger.verbose('VRB');
  }
}