traxxx/src/logger.js

'use strict';

const util = require('util');
const path = require('path');
const winston = require('winston');

require('winston-daily-rotate-file');

const args = require('./argv');

function logger(filepath) {
	const root = filepath.match(/src\/|dist\//);
	const filename = filepath.slice(root.index + root[0].length)
		.replace(path.extname(filepath), '');

	return winston.createLogger({
		format: winston.format.combine(
			winston.format.timestamp({ format: 'YYYY-MM-DD HH:mm:ss' }),
			winston.format(info => (info instanceof Error
				? { ...info, message: info.stack }
				: { ...info, message: typeof info.message === 'string' ? info.message : util.inspect(info.message) }))(),
			winston.format.colorize(),
			winston.format.printf(({ level, timestamp, label, message }) => `${timestamp} ${level} [${label || filename}] ${message}`),
		),
		transports: [
			new winston.transports.Console({
				level: args.level,
				timestamp: true,
			}),
			new winston.transports.DailyRotateFile({
				datePattern: 'YYYY-MM-DD',
				filename: 'log/%DATE%.log',
				level: 'silly',
			}),
		],
	});
}

module.exports = logger;