@misterzik/espressojs/server/utils/logger.js

EspressoJS Introducing Espresso.JS, your ultimate Express configuration starting point and boilerplate. With its simplicity and lack of opinionation, EspressoJS offers plug-and-play configurations built on top of Express.

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 * EspressoJS - Logger Utility
 */

const winston = require("winston");
const path = require("path");

const logLevels = {
  error: 0,
  warn: 1,
  info: 2,
  http: 3,
  debug: 4,
};

const logColors = {
  error: "red",
  warn: "yellow",
  info: "green",
  http: "magenta",
  debug: "blue",
};

winston.addColors(logColors);

const logFormat = winston.format.combine(
  winston.format.timestamp({ format: "YYYY-MM-DD HH:mm:ss" }),
  winston.format.colorize({ all: true }),
  winston.format.printf(
    (info) => `${info.timestamp} [${info.level}]: ${info.message}`
  )
);

const fileFormat = winston.format.combine(
  winston.format.timestamp({ format: "YYYY-MM-DD HH:mm:ss" }),
  winston.format.json()
);

const transports = [
  new winston.transports.Console({
    format: logFormat,
  }),
  new winston.transports.File({
    filename: path.join(process.cwd(), "logs", "error.log"),
    level: "error",
    format: fileFormat,
  }),
  new winston.transports.File({
    filename: path.join(process.cwd(), "logs", "combined.log"),
    format: fileFormat,
  }),
];

const logger = winston.createLogger({
  level: process.env.NODE_ENV === "production" ? "info" : "debug",
  levels: logLevels,
  transports,
  exceptionHandlers: [
    new winston.transports.File({
      filename: path.join(process.cwd(), "logs", "exceptions.log"),
    }),
  ],
  rejectionHandlers: [
    new winston.transports.File({
      filename: path.join(process.cwd(), "logs", "rejections.log"),
    }),
  ],
});

module.exports = logger;