Node functions to copy files, folders (recursively), and rename files

node-fs-functions-copy-rename

const fs = require('fs');
const path = require('path');

function copyFile(source, target) {
	let targetFile = target;
	if (fs.existsSync(target) && fs.lstatSync(target).isDirectory()) targetFile = path.join(target, path.basename(source))

	fs.writeFileSync(targetFile, fs.readFileSync(source));
}

function copyFolderRecursive(source, target) {
	if (!fs.existsSync(target)) {
		fs.mkdirSync(target);
	}

	if (fs.lstatSync(source).isDirectory()) {
		const files = fs.readdirSync(source);
		files.forEach(file => {
			const currentSource = path.join(source, file);
			if (fs.lstatSync(currentSource).isDirectory()) {
				copyFolderRecursive(currentSource, target);
			} else {
				copyFile(currentSource, target);
			}
		});
	}
}

function renameFile(originalFileName, newFileName) {
	fs.rename(originalFileName, newFileName, function (err) {
		if (err) console.log('Error when renaming file: ' + err);
	});
}