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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...

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.

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

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