logger.js with winston for node projects. Made for personal projects but it is public so if anyone wants to use this config, go ahead.

logger.js

const { createLogger, format, transports } = require("winston");
const { printf, colorize, timestamp, combine, label } = format;
const { Console, File } = transports;

const myFormat = printf(({ timestamp, message, level, label }) => {
  const date = new Date(timestamp).toUTCString();
  return `${label ? `[${label}]` : ""}(${date}) [${level}]: ${message}`;
});

const logger = createLogger({
  level: "silly",
});

if (process.env.NODE_ENV !== "production") {
  logger.add(
    new Console({
      format: combine(colorize(), timestamp(), myFormat),
    })
  );

  logger.add(
    new File({
      filename: "combined.log",
      format: combine(label({ label: "DEV" }), timestamp(), myFormat),
    })
  );
} else {
  logger.add(
    new File({
      filename: "combined.log",
      format: combine(label({ label: "PROD" }), timestamp(), myFormat),
    })
  );
}

module.exports = logger;

Winston Logger Config

Winston Logger Config