a few helpers that setup a logger and config the same in different projects

configuration.js

const nconf = require('nconf');

/* eslint import/no-unresolved: [2, { ignore: ['dotenv.*'] }] */
function init() {
	if ((process.env.ENVIRONMENT || process.env.NODE_ENV || '').toLowerCase().trim() !== 'production') {
		let dotenv;
		try {
			dotenv = require('dotenv-safe');
		} catch (error) {
			try {
				dotenv = require('dotenv');
			} catch (error) {
				dotenv = false;
			}
		}

		if (dotenv) {
			try {
				const dotenvexpand = require('dotenv-expand');
				dotenvexpand(dotenv.config());
			} catch (error) {
				dotenv.config();
			}
		}
	}

	nconf.argv()
		.env();
}

module.exports.init = init;

index.js

const logger = require('./logger');
const configuration = require('./configuration');

function initAll() {
	logger.init();
	configuration.init();
}

module.exports = {
	initAll,
	logger,
	configuration
};

logger.js

const {format, loggers, transports} = require('winston');

let label = '';

function init() {
	const myform = format.printf(info => {
		return `${info.timestamp}${info.label ? ' [' + info.label + ']' : info.label} ${info.level}: ${info.message}`;
	});

	const processInfo = format(info => {
		if (info.label) {
			label = info.label;
		} else {
			info.label = label;
		}

		return info;
	})();
	const environment = process.env.ENVIRONMENT || process.env.NODE_ENV || '';

	loggers.add('standard', {
		level: environment.toLowerCase().trim() === 'production' ? 'info' : 'debug',
		format: format.combine(
			format.timestamp({format: 'YYYY-MM-DDTHH:mm:ssZZ:'}),
			processInfo,
			myform
		),
		transports: [
			new transports.Console()
		]
	});
}

module.exports.init = init;