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Questions tagged [winston]

A multi-transport async logging library for node.js.

Winston is designed to be a simple and universal logging library with support for multiple transports. A transport is essentially a storage device for your logs. Each instance of a winston logger can have multiple transports configured at different levels. For example, one may want error logs to be stored in a persistent remote location (like a database), but all logs output to the console or a local file.

There also seemed to be a lot of logging libraries out there that coupled their implementation of logging (i.e. how the logs are stored / indexed) to the API that they exposed to the programmer. This library aims to decouple those parts of the process to make it more flexible and extensible.

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Node.js - logging / Use morgan and winston

we use morgan in order to log our express transformation: var morgan = require('morgan'); morgan('combined'); // a format string morgan(':remote-addr :method :url :uuid'); // a custom function morgan(function (req, res) { return req.method + ' '…
Or Smith
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How can I add timestamp to logs using Node.js library Winston?

I want to add timestamp to logs. What is the best way to achieve this?
kolrie
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How to use Winston in several modules?

I have several modules - let's say server.js, module1.js,...,moduleN.js. I would like define the log file in my server.js: winston.add(winston.transports.File, { filename: 'mylogfile.log' }); and then use it in all my modules. What is the best way…
Alexander
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TypeError: winston.Logger is not a constructor with winston and morgan

I tried with Winston for logger. I used in one project their It's working well when I copy paste the code from their to the current existing project than I face an issue like TypeError: winston.Logger is not a constructor let logger = new…
Gunjan Patel
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How to Log Full Stack Trace with Winston 3?

My logger is set up like: const myFormat = printf(info => { return `${info.timestamp}: ${info.level}: ${info.message}: ${info.err}`; }); const logger = winston.createLogger({ level: "info", format: combine(timestamp(), myFormat), …
Anthony Xie
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How would a human read a json winston log file?

It seems nice for API's, scripts and what not. But reading a winston json stack trace is very hard with a text editor. E.g. {"level":"info","message":"starting","timestamp":"2014-05-14T15:45:44.334Z"} {"date":"Wed May 14 2014 08:45:45 GMT-0700…
ubershmekel
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Winston Logger - NodeJs Debug console logs not showing in VSCode

I'm using VSCode debugger and winston logger for NodeJS, but can't see output from application unless I specify external terminal like this: "version": "0.2.0", "configurations": [ { "type": "node", "request": "launch", …
Josip
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How to log JavaScript objects and arrays in winston as console.log does?

I was looking at top Node logging systems: npmlog, log4js, bunyan and winston and decided to use winston for having the most npm monthly downloads. What I want to set up is custom logger which I will be able to use on development environment with…
Tommz
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Winston doesn't pretty-print to console

I'm trying to get Winston to pretty print to the console, so I stuck this in a file and ran it with node: var winston = require('winston'); winston.cli(); winston.data({ a: "test", of: "many", properties: { like: "this" …
JoBu1324
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Disable winston logging when running unit tests?

Can Winston logging be selectively disabled when executing unit tests of a node module? Ideally, I'd like to have logging for informational and debug purposes when the application is running, but be suppressed as to not clutter the presentation…
Sk606
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winston:how to change timestamp format

I am using winston to add log details in node.js, i used the following procedure to add the logs var winston = require('winston'); winston.remove(winston.transports.Console); winston.add(winston.transports.Console,…
Amanda G
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How to set log level in Winston/Node.js

I am using Winston logging with my Node.js app and have defined a file transport. Throughout my code, I log using either logger.error, logger.warn, or logger.info. My question is, how do I specify the log level? Is there a config file and value that…
Silent User
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Much needed: well-highlighted JSON log viewer

Using winston for node.js logging, I get json log files. A log file in this vein is simply a sequence of (newline delimited) json objects. This is great for log querying and treating logs as first-class data! However, both Sublime and gedit (at…
matanster
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How do I change my node winston JSON output to be single line

When I create a nodejs winston console logger and set json:true, it always output JSON logs in multiline format. If I pipe these to a file and try to grep that file, my grep hits only include part of the log line. I want winston to output my log…
zayquan
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How to flush winston logs?

I want to flush the winston logger before process.exit. process.on('uncaughtException', function(err){ logger.error('Fatal uncaught exception crashed cluster', err); logger.flush(function(){ // <- process.exit(1); }); }); Is…
bevacqua
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