newCashBook/epub_node/utils/logger.js

import winston from "winston";

const logger = winston.createLogger({
  level: "info",
  format: winston.format.json(),
  defaultMeta: { service: "user-service" },
  transports: [
    //
    // - Write all logs with importance level of `error` or higher to `error.log`
    //   (i.e., error, fatal, but not other levels)
    //
    new winston.transports.File({
      filename: "base_files/winston/error.log",
      level: "error",
    }),
    //
    // - Write all logs with importance level of `info` or higher to `combined.log`
    //   (i.e., fatal, error, warn, and info, but not trace)
    //
    new winston.transports.File({
      filename: "base_files/winston/combined.log",
    }),
  ],
});

export default logger;