modern node https file download (2021 and the future)

download.js

// request is deprecated and stackoverflow is crusty

const download = async (url, dest) => {
	return await new Promise((resolve, reject)=> {

		const file = fs.createWriteStream(dest)
		const request = https.get(url, (res) => {
		    if (res.statusCode !== 200) return resolve( res )
		    const size = res.headers[ 'content-length' ]
		   	let pro = 0
		   	console.log(`${dest} ${size} total`)
			res.on('data', e => {

				// clear last line of console log...

				process.stdout.moveCursor(0, -1)
				process.stdout.clearLine(1)

				// add togther bytes...

				pro += e.length
				console.log(`${dest} ${parseInt( pro/size * 100 )}%`)
			})
		    res.pipe( file ) 
		})

	    file.on('finish', e => file.close(resolve))

		request.on('error', (err) => {
			console.error(err)
			fs.unlink(dest)
			reject(err)
		});

		file.on('error', (err) => {
			console.error(err)
			fs.unlink(dest)
			return reject(err)
		});
	})
}