Comprehensive Guide to js-native-logger for Efficient JavaScript Logging

Logging is a crucial part of any software development process. Understanding what is happening in your application, finding bugs, and improving performance all rely on effective logging. Enter js-native-logger, a powerful and easy-to-use logging library for JavaScript developers.

Getting Started

To start using js-native-logger, install it using npm:

  
  npm install js-native-logger
  

Basic Usage

Here’s a simple example to get you started:

  
  const Logger = require('js-native-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 Features

js-native-logger comes with a wealth of advanced features. Below are some of the most useful APIs:

Setting Log Levels

  
  logger.setLogLevel('info'); // Available levels: 'debug', 'info', 'warn', 'error'
  

Custom Transports

  
  logger.addTransport(new Logger.transports.Console());
  logger.addTransport(new Logger.transports.File({ filename: 'app.log' }));
  

Formatting Messages

  
  logger.setFormatter((level, message) => {
    return `${new Date().toISOString()} [${level.toUpperCase()}]: ${message}`;
  });
  

Error Handling

  
  function startApp() {
    try {
      // Application logic here
    } catch (error) {
      logger.error('Error occurred: ', error);
    }
  }
  startApp();
  

Usage in a Real Application

In this section, we’ll create a simple app that demonstrates the use of js-native-logger in real-life scenarios:

  
  const Logger = require('js-native-logger');
  const express = require('express');
  const app = express();
  const logger = new Logger();

  // Set log level
  logger.setLogLevel('info');

  // Add transports
  logger.addTransport(new Logger.transports.Console());
  logger.addTransport(new Logger.transports.File({ filename: 'server.log' }));

  // Middleware for logging requests
  app.use((req, res, next) => {
    logger.info(`Received request: ${req.method} ${req.url}`);
    next();
  });

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

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

Conclusion

js-native-logger provides a seamless and customizable logging experience. Whether you are implementing basic logging or utilizing advanced features, this library can meet your needs efficiently. Start using js-native-logger today and take your logging to the next level.

Hash: f32a9d69564f6f1a52ddbe5ec6a16aaa48b163029f1314a294aa6d1abd61d42a