Winston logging object

Question

I use Winston for my backend logging I cannot log the object without using JSON.stringify which is annoying

logger.debug(`Register ${JSON.stringify(         


        

Answer 1

I had to combine the solution provided by @SherloxFR and @Anton.

const Winston = require('winston');
const { format } = Winston;

const options = {
    file: {
        ....
        format: format.combine(
            format.splat(), 
            format.json()
        ),
        ...
    },
    console: {
        ...
        format: format.combine(
            format.splat(),
            format.json()
        ),
        ...
    }
};

You can see that I added both format.splat() and format.json() to the options config in the above code.

const logger = new Winston.createLogger({
    transports: [
        new Winston.transports.File(options.file),
        new Winston.transports.Console(options.console)
    ],
    exitOnError: false // do not exit on handled exceptions
});

That is how I used the options config object. You can actually write the format code inside the transports array but I don't like it that way. It's your choice anyway.

After the configuration like that, the is how I used it in my code

let myObj = {
   name: "StackOverflow",
};

logger.info('Content: %o', myObj);

You can also spread it like this if you want

logger.info('Content: %o', {...myObj});

That's all. Winston should log your object with this set up.