How to write a callback with error handling?

Question

Node.js

How can I write error handling code?
It seemed to me that this is how most functions are written in node, but ! new Error throws false
Why and how is it done in modules?

function func(err, data, cb) {
  if(!err) {
    cb(data);
  } else {
    console.log(err);
  }
}

setTimeout(func.bind(null, new Error('error'), 'hello world', (data) => {
  console.log(data);
}), 3000);