Use logging to a file

PHOTO EMBED

Fri Apr 14 2023 09:05:57 GMT+0000 (Coordinated Universal Time)

Saved by @mindplumber #javascript #uuid #guid 

// Here's how you can set up logging to a file:
// Install the winston package by running the following command in your terminal:
npm install winston

// Create a logger.js file in your project directory with the following code:
// This creates a logs folder in the same directory as your logger.js module,
// and places the log files inside it. You can adjust the logsDir variable 
// to specify a different directory if desired.

const path = require('path');
const winston = require('winston');
const { createLogger, format, transports } = winston;
const { combine, timestamp, printf } = format;

const logFormat = printf(({ level, message, timestamp }) => {
  return `${timestamp} ${level}: ${message}`;
});

const logsDir = path.join(__dirname, 'logs');

const logger = createLogger({
  level: 'info',
  format: combine(
    timestamp(),
    logFormat
  ),
  transports: [
    new transports.Console(),
    new transports.File({
      filename: path.join(logsDir, 'error.log'),
      level: 'error',
      maxsize: 5242880, // 5MB
      maxFiles: 5,
      tailable: true
    }),
    new transports.File({
      filename: path.join(logsDir, 'combined.log'),
      maxsize: 5242880, // 5MB
      maxFiles: 5,
      tailable: true
    })
  ]
});

module.exports = logger;
content_copyCOPY