Welcome to the Definitive Guide to component-logger

The component-logger is an indispensable tool for developers who need to implement effective logging mechanisms within their applications. This guide explores its numerous APIs, showcases practical examples, and demonstrates how these can be integrated into your app for enhanced logging capabilities.

Getting Started with component-logger

Begin by installing the component-logger package. Use the following command:

 npm install component-logger

Basic Logger Initialization

Initialize the logger using basic configurations:

 const logger = require('component-logger').createLogger();

 logger.info('Logger has been initialized');

Logger Levels

The logger supports multiple log levels. Here are some examples:

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

Custom Logger Configuration

You can configure the logger to suit your application’s needs:

 const customLogger = require('component-logger').createLogger({
   level: 'warn',
   format: 'json',
   transports: [
     new transports.Console(),
     new transports.File({ filename: 'app.log' })
   ]
 });

 customLogger.warn('This is a custom warning message');

Additional Features

Explore other useful APIs such as setting multiple transports, customizing formats, and more:

 const { createLogger, transports, format } = require('component-logger');

 const advancedLogger = createLogger({
   level: 'info',
   format: format.combine(
     format.timestamp(),
     format.json()
   ),
   transports: [
     new transports.Console(),
     new transports.File({ filename: 'combined.log' })
   ]
 });

 advancedLogger.info('Advanced logger configuration');

Implementing component-logger in an Application

Here is an example of integrating component-logger in a Node.js application:

 const express = require('express');
 const { createLogger, transports, format } = require('component-logger');

 const app = express();
 const logger = createLogger({
   level: 'info',
   format: format.combine(
     format.timestamp(),
     format.json()
   ),
   transports: [new transports.Console()]
 });

 app.use((req, res, next) => {
   logger.info(\`Received request: \${req.method} \${req.url}\`);
   next();
 });

 app.get('/', (req, res) => {
   res.send('Hello, World!');
   logger.info('Sent response: Hello, World!');
 });

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

Using the component-logger in your applications enables efficient and structured logging, facilitating better debugging and monitoring.

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