usage of winston

my-winston.js

// set timezone
process.env.TZ = 'Asia/Seoul';

// winston object
var winston = require('winston');
var logger = new (winston.Logger)({
  transports: [
    new (winston.transports.File)({ 
    		filename: 'error.log',
    		json: false,
    		timestamp: function () {
    			return new Date();
    		}
    	}),
    new (winston.transports.Console)( {
	    	colorize: true,
	    	timestamp: function () {
	    		return new Date();
	    	}
	    })
  ]
});

// uncaughted exceptions
process.on('uncaughtException', function (e) {
	logger.error(e.stack);
});


// examples
logger.info('This is info')
logger.warn('This is warn')
logger.error('This is error')

try {
	throw new Error('Catched exception was ouccered!');
} catch (e) {
	logger.error(e.stack);
}

throw new Error('Uncatched exception was ouccered!');