winston-formatted

Wrapper around the the fantastic winston logging library which adds formatting and colorization, and filename of the file calling the logger method.

This library adds a helper method loggerFor() to the winston object, which creates and returns a Console transport with formatting:

const log = winston.loggerFor(module);

Motivation

Having used winston in many projects myself, I found that I wanted a nice console output and a bit more information, so I've spent some time to write a wrapper around winston to do just that.

Installation

npm install --save winston-formatted

Usage

The intention is that you can use winston as you normally would, with a formatted console output.

ES6 modules usage

import winston from 'winston-formatted';

// passing in module here allows the library to get the calling filename
const log = winston.loggerFor(module);

// using normal methods for logging
log.error('Test error');
log.warn('Test warning');
log.info('Test info');
log.verbose('Test verbose');
log.debug('Test debug');
log.silly('Test silly');

Logging levels

Logging levels in winston conform to the severity ordering specified by [RFC5424]: severity of all levels is assumed to be numerically ascending from most important to least important.

const levels = { 
  error: 0, 
  warn: 1, 
  info: 2, 
  verbose: 3, 
  debug: 4, 
  silly: 5 
};

Advanced usage

The whole winston library is passed through, and the logger returned is a normal winston Console transport.

Therefore, you can do all the things you normally would with winston. For instance, to add a File transport to your logger, with only 'error' level, do the following:

import winston from 'winston-formatted';

const log = winston.loggerFor(module);

// add more transports as required
log.add(new winston.transports.File({ filename: 'error.log', level: 'warn' }));

For full configuration options, please refer to winston

Credits

Author: Kev Marchant

Of course, all props go to the original authors of this great library.