Introduction to kiss-logger

Efficient logging is essential for debugging and monitoring applications. kiss-logger is a simple, lightweight logging library designed to make logging hassle-free. Let’s explore the various API functionalities provided by kiss-logger with practical code snippets for a comprehensive understanding.

Getting Started

First, you need to install kiss-logger:

  npm install kiss-logger

Basic Logging

Logging a simple message:

   const logger = require('kiss-logger');
   logger.info('This is an informational message.');

Logging Levels

kiss-logger supports different logging levels: debug, info, warn, and error.

   const logger = require('kiss-logger');

   logger.debug('Debug level log.');
   logger.info('Info level log.');
   logger.warn('Warn level log.');
   logger.error('Error level log.');

Custom Logging Levels

Customize your own logging levels:

   const logger = require('kiss-logger');
   logger.addLevel('custom', 4500, { fg: 'brightWhite', bg: 'bgBlue' });

   logger.custom('This is a custom level log.');

Logging to Files

Log messages to a file:

   const logger = require('kiss-logger');
   const fileTransport = new logger.transports.File({ filename: 'app.log' });

   logger.addTransport(fileTransport);
   logger.info('This message will be logged in app.log');

Concurrent Transports

Enable multiple transports:

   const logger = require('kiss-logger');
   const consoleTransport = new logger.transports.Console();
   const fileTransport = new logger.transports.File({ filename: 'app.log' });

   logger.addTransport(consoleTransport);
   logger.addTransport(fileTransport);
   logger.info('This message will appear both in the console and in app.log');

Timestamping Logs

Add timestamps to logs:

   const logger = require('kiss-logger');

   logger.configure({ timestamp: true });
   logger.info('Timestamped log message.');

Using JSON Format

Log messages in JSON format:

   const logger = require('kiss-logger');
   const jsonTransport = new logger.transports.File({ filename: 'app.log', json: true });

   logger.addTransport(jsonTransport);
   logger.info('This is a JSON formatted log message.');

Example App Using kiss-logger

   const express = require('express');
   const logger = require('kiss-logger');

   const app = express();

   const consoleTransport = new logger.transports.Console();
   const fileTransport = new logger.transports.File({ filename: 'app.log' });

   logger.addTransport(consoleTransport);
   logger.addTransport(fileTransport);

   app.use((req, res, next) => {
     logger.info(`Request URL: ${req.url}`);
     next();
   });

   app.get('/', (req, res) => {
     logger.debug('Debugging the root route.');
     res.send('Hello World!');
   });

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

By integrating kiss-logger into your project, you can leverage its powerful yet straightforward features to maintain clean and informative logs. Improve your debugging and monitoring processes today by adopting kiss-logger.

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