Downlaod Node.JS: https://nodejs.org/en/download/package-manager

NPM Link: https://www.npmjs.com/

https://nodejs.org/api/os.html

https://nodejs.org/api/fs.html

JavaScript Playcode Link:

https://playcode.io/

https://jsfiddle.net/

https://www.npmjs.com/package/express

https://www.postman.com/

https://developer.mozilla.org/en-US/docs/Web/HTTP/Status

https://cloud.mongodb.com/