[Bug]: Winston does not print log error when throw or process.exit() afterwards

[abgonzalez93]

🔎 Search Terms

winston not printing trace, winston not creating any outpout

The problem

Winston does not print log error when throw or process.exit() afterwards

What version of Winston presents the issue?

3.15.0

What version of Node are you using?

20.18.0

If this worked in a previous version of Winston, which was it?

No response

Minimum Working Example

`
import logger from '@logging/logger'
import Config from '@config/Config'

const required = ['DB_URI', 'JWT_SECRET_ACCESS', 'JWT_SECRET_REFRESH']

const requiredConfig = (config: Config): void => {
const missingKeys = required.filter((key) => !config[key as keyof Config])

if (missingKeys.length > 0) {
const errorMessage = Missing required config values in .env file: ${missingKeys.join(', ')}
logger.error(errorMessage)
throw new Error(errorMessage)
}
}

export default requiredConfig
`

Additional information

No response

[Arc8ne]

This issue does not occur (i.e. winston prints the logged error and a stack trace is printed to the console) when I try to reproduce it using the following code (a slightly modified version of the minimum working example that you provided since some of the code for it was not properly written / incompatible with my environment):

import * as winston from "winston";

interface Config
{
    DB_URI: string;

    JWT_SECRET_ACCESS: string;

    JWT_SECRET_REFRESH: string;
}

let logger = winston.createLogger();

logger.add(
    new winston.transports.Console()
);

const required = ["DB_URI", "JWT_SECRET_ACCESS", "JWT_SECRET_REFRESH"];

const requiredConfig = (config: Record<string, any>): void =>
{
    const missingKeys = required.filter(
        (key) => !config[key as keyof Config]
    );

    if (missingKeys.length > 0)
    {
        const errorMessage = `Missing required config values in .env file: ${missingKeys.join(', ')}`;

        logger.error(errorMessage);

        throw new Error(errorMessage);
    }
}

requiredConfig(
    {
        DB_URI: "",
        JWT_SECRET_ACCESS: ""
    }
);

export default requiredConfig;

@abgonzalez93 As I am unable to reproduce this issue using your provided minimum working example, is it alright if you could provide an alternative minimum working example if this issue still persists for you?

[lraveri]

I think to reproduce the problem, you need to use the File transport or the HTTP transport.

I had the same issue and wrote a patch to solve it:
winston-3-log-and-exit

We are using it in production and works great! The code is pretty easy, you can take a look here:
https://www.unpkg.com/browse/winston-3-log-and-exit@1.0.2/index.js

I hope this helps!

It would be great to introduce a feature like this into the library.