How do I change my node winston JSON output to be single line

Question

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

Answer 1

winston.format.printf(
    info => `${info.timestamp} ${info.level}: ${JSON.stringify(info.message, null, 2)}`))

will pretty print the json object