[tkone]

or just

fs.createReadStream('file.txt').pipe(fs.createWriteStream('new-file.txt'))

Streams are too slow you say?

fs.writeFileSync('new-file.txt', fs.readFileSync('file.txt'))

I've never had a problem with no explicit copy, but I am very happy it has been added...

[pitaj]

For the first one, what about error handling? You have to handle errors by both the read and write stream, and also most people will want a callback when everything is done, so you have to handle that event, too.

[VeejayRampay]

Are streams really considered "slow"? Would your second example be faster in practice for most files?