@nodesandbox/logger

@nodesandbox/logger is a singleton logging utility for Node.js applications built using the winston library. It provides structured logging formats, supports multiple transports, and offers a simple API for logging messages at different levels.

Features

• Singleton Pattern: Ensures only one instance of the logger is created.
• Custom Log Format: Combines timestamps, error stack traces, and other relevant information into structured logs.
• Multiple Transports: Logs to both the console and files (error logs and combined logs).
• Exception Handling: Automatically logs uncaught exceptions to a separate file.
• File Logging: Supports writing specific log messages to individual files.

Installation

You can install @nodesandbox/logger via npm:

npm install @nodesandbox/logger

Usage

import { LoggerService } from '@nodesandbox/logger';

const logger = LoggerService.getInstance();

// Logging at different levels
logger.info('Application has started');
logger.warn('This is a warning message');
logger.error('An error occurred', new Error('Sample error'));

// Logging to a specific file
logger.file('custom-log', 'This is a log message for a custom log file');

Configuration

Log Levels

You can use the following log levels:

• info: General information messages
• warn: Warning messages
• error: Error messages with optional stack trace

File Structure

By default, logs are saved in the logs directory:

• logs/error.log: Contains error messages
• logs/combined.log: Contains all messages
• logs/exceptions.log: Contains uncaught exceptions
• logs/browser: Contains custom logs

License

This project is licensed under the MIT License.