[Bug]: defaultMeta returns object not string

🔎 Search Terms

defaultmeta

The problem

defaultMeta does’t appears as string in the log

const logger = winston.createLogger({
    level: 'info',
    format: production ? ecsFormat({ convertReqRes: true }) : winston.format.simple(),
    defaultMeta: { service: 'account' },
    transports: [new winston.transports.Console()]
});

but it displays service like that in the log

{
    "service":
    {
        "0": "a",
        "1": "c",
        "2": "c",
        "3": "o",
        "4": "u",
        "5": "n",
        "6": "t"
    }
}

What version of Winston presents the issue?

v3.3.3

What version of Node are you using?

v16.15.0

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

No response

Minimum Working Example

const logger = winston.createLogger({
    level: 'info',
    format: production ? ecsFormat({ convertReqRes: true }) : winston.format.simple(),
    defaultMeta: { service: 'account' },
    transports: [new winston.transports.Console()]
});

Additional information

No response

[nTony46]

Me and other students can work on this issue.

[renanyoy]

@maverick1872 I have upgraded to winston 3.7.2 and it’s same