Reading, Deleting, and Renaming Files with Node JS File System (fs) Module

app.js

// FS docs: https://nodejs.org/api/fs.html
const fs = require('fs');

fs.readdir('.', (err, files) => {
	if(err) console.log(err);
	let counter = 0;
	files.forEach(file => {
		// // match and delete thumbnails
		// if(file.match(/\d\dx\d\d/)
		// 	|| file.match(/\d\d\dx\d\d\d/)
		// 	|| file.match(/\d\d\d\dx\d\d\d/)) {
		// 	file.unlink(file, err => {
		// 		if(err) console.log(err);
		// 		console.log('File deleted!')
		// 	})
		// }

		// match and rename jpg's
		if(file.match(/jpg$/)) {
			counter++;
			fs.rename(file, `${counter}.jpg`, err => {
				if(err) console.log(err);
				console.log('File renamed');
			})
		}
	});
});