To get the OS current user id or (uid) in Node.js, you can use the userInfo() method from the os module and then use the uid property from the object returned.

// require os module
const os = require("os");

// invoke userInfo() method
const userInfo = os.userInfo();

// get uid property
// from the userInfo object
const uid = userInfo.uid;

console.log(uid); // 20

See the above code live in repl.it.

That's all! 😃

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