Welcome to Kronic Logger

Kronic Logger is a powerful and efficient logging library designed to meet the needs of modern developers. Whether you’re building a web application, a mobile app, or a desktop software, Kronic Logger provides a plethora of APIs to help you track and manage logs effectively. In this tutorial, we’ll introduce you to Kronic Logger and explore its dozens of useful APIs with practical code examples. We’ll also show you how to implement a simple application using these APIs.

Getting Started

To start using Kronic Logger, you first need to install it:

  npm install kronic-logger

Basic Usage

Here is how you can create a simple logger and log messages:

  const Logger = require('kronic-logger');
  const logger = new Logger();

  logger.info('This is an info message');
  logger.error('This is an error message');
  logger.warn('This is a warning message');
  logger.debug('This is a debug message');

Advanced Configuration

Kronic Logger allows you to customize its behavior with various configuration options:

  const logger = new Logger({
      level: 'debug',
      format: 'json',
      transports: ['console', 'file']
  });

  logger.debug('Debugging information with advanced configuration');

Transports

Define where your logs will be recorded, such as console, file, or a custom transport:

  const fileTransport = new Logger.FileTransport({
      filename: 'application.log'
  });

  const logger = new Logger({
      transports: [fileTransport]
  });

  logger.info('This message will be logged in application.log file');

Error Handling

Capture and log errors effortlessly with Kronic Logger:

  try {
      throw new Error('Something went wrong!');
  } catch (error) {
      logger.error('Caught an error:', error);
  }

HTTP Request Logging

Log HTTP requests seamlessly using middleware:

  const express = require('express');
  const app = express();

  app.use(logger.middleware());

  app.get('/', (req, res) => {
      res.send('Hello World');
  });

  app.listen(3000, () => {
      logger.info('Server is running on port 3000');
  });

Application Example

Here’s a simple application that utilizes various Kronic Logger APIs:

  const express = require('express');
  const Logger = require('kronic-logger');

  const app = express();
  const logger = new Logger({
      level: 'info',
      format: 'json',
      transports: ['console', new Logger.FileTransport({ filename: 'app.log' })]
  });

  app.use(logger.middleware());

  app.get('/', (req, res) => {
      logger.info('Root path requested');
      res.send('Welcome to Kronic Logger example!');
  });

  app.get('/error', (req, res) => {
      try {
          throw new Error('Example error');
      } catch (error) {
          logger.error('Error on /error route:', error);
          res.status(500).send('Something went wrong!');
      }
  });

  app.listen(3000, () => {
      logger.info('Application is running on port 3000');
  });

With Kronic Logger, you have a versatile and comprehensive logging solution at your fingertips. Utilize the APIs to monitor and debug your applications efficiently.

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