@a_jackie_z/logger

A lightweight logger wrapper for microservices using Pino.

Installation

npm install @a_jackie_z/logger

Usage

import { logger } from '@a_jackie_z/logger'

logger.info('Application started')
logger.debug('Debug information')
logger.warn('Warning message')
logger.error('Error occurred')
logger.fatal('Fatal error')

Configuration

The logger is configured via environment variables:

LOG_LEVEL

Sets the minimum logging level. Default: info

Supported values: trace, debug, info, warn, error, fatal, silent

LOG_LEVEL=debug node app.js

LOG_PRETTY

Enables pretty-printed output for development. Default: false

Supported values: true, on, 1 (case-insensitive)

LOG_PRETTY=true node app.js

Features

• Fast: Built on Pino, one of the fastest Node.js loggers
• Environment-based configuration: Configure via environment variables
• Pretty printing: Optional human-readable output for development
• Production-ready: JSON output by default for structured logging
• TypeScript support: Full type definitions included

Examples

Development Mode

LOG_PRETTY=true LOG_LEVEL=debug npm start

Production Mode

LOG_LEVEL=info npm start

License

MIT