Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Could not remove old log file

See original GitHub issue

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

const transport = new (winston.transports.DailyRotateFile)({
	"name": "basic-log",
	"datePattern": "YYYY-MM-DD",
	"zippedArchive": false,
	"level": "info",
	"colorize": false,
	"filename": "./logs/log-%DATE%.txt",
	"maxSize": "1m",
	"maxFiles": "10",
});

transport.on('rotate', function(oldFilename, newFilename) {
	// do something fun
	console.log(new Date(), oldFilename, newFilename)
});

const logger = new (winston.Logger)({
	transports: [
		transport
	]
});

const str = 'Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World!';
setInterval(function () {
	for (let i = 0; i < 100; i++)
		logger.info(str);
}, 10);

2018-03-20T12:44:14.690Z ‘logs\log-2018-03-20.txt.4’ ‘logs\log-2018-03-20.txt.5’ 2018-03-20T12:44:15.368Z ‘logs\log-2018-03-20.txt.5’ ‘logs\log-2018-03-20.txt.6’ 2018-03-20T12:44:16.067Z ‘logs\log-2018-03-20.txt.6’ ‘logs\log-2018-03-20.txt.7’ 2018-03-20T12:44:16.751Z ‘logs\log-2018-03-20.txt.7’ ‘logs\log-2018-03-20.txt.8’ 2018-03-20T12:44:17.468Z ‘logs\log-2018-03-20.txt.8’ ‘logs\log-2018-03-20.txt.9’ 2018-03-20T12:44:18.190Z ‘logs\log-2018-03-20.txt.9’ ‘logs\log-2018-03-20.txt.10’ 2018-03-20T12:44:18.869Z ‘logs\log-2018-03-20.txt.10’ ‘logs\log-2018-03-20.txt.11’ 2018-03-20T12:44:19.590Z ‘logs\log-2018-03-20.txt.11’ ‘logs\log-2018-03-20.txt.12’ 2018-03-20T12:44:20.270Z ‘logs\log-2018-03-20.txt.12’ ‘logs\log-2018-03-20.txt.13’ 2018-03-20T12:44:20.968Z ‘logs\log-2018-03-20.txt.13’ ‘logs\log-2018-03-20.txt.14’ 2018-03-20T12:44:20.968Z '[FileStreamRotator] Could not remove old log file: ’ ‘logs\log-2018-03-20.txt.4’ 2018-03-20T12:44:21.689Z ‘logs\log-2018-03-20.txt.14’ ‘logs\log-2018-03-20.txt.15’ 2018-03-20T12:44:22.369Z ‘logs\log-2018-03-20.txt.15’ ‘logs\log-2018-03-20.txt.16’ 2018-03-20T12:44:23.069Z ‘logs\log-2018-03-20.txt.16’ ‘logs\log-2018-03-20.txt.17’ 2018-03-20T12:44:23.790Z ‘logs\log-2018-03-20.txt.17’ ‘logs\log-2018-03-20.txt.18’ 2018-03-20T12:44:24.469Z ‘logs\log-2018-03-20.txt.18’ ‘logs\log-2018-03-20.txt.19’ 2018-03-20T12:44:25.170Z ‘logs\log-2018-03-20.txt.19’ ‘logs\log-2018-03-20.txt.20’ 2018-03-20T12:44:25.870Z ‘logs\log-2018-03-20.txt.20’ ‘logs\log-2018-03-20.txt.21’ 2018-03-20T12:44:26.570Z '[FileStreamRotator] Could not remove old log file: ’ ‘logs\log-2018-03-20.txt.12’ 2018-03-20T12:44:26.570Z ‘logs\log-2018-03-20.txt.21’ ‘logs\log-2018-03-20.txt.22’ 2018-03-20T12:44:27.282Z ‘logs\log-2018-03-20.txt.22’ ‘logs\log-2018-03-20.txt.23’

and with “zippedArchive”: true no file is deleted