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node.js - Synchronously reading stdin in Windows

I've been doing this to synchronously read the whole stdin data under Linux:

var buffer = fs.readFileSync('/dev/stdin');

This obviously won't work on Windows since there is no /dev/stdin file. What could I do to achieve the same?

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var size = fs.fstatSync(process.stdin.fd).size;
var buffer = size > 0 ? fs.readSync(process.stdin.fd, size)[0] : '';

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