difference.md

We have

function blah(done) {
  doSomething(function(err, data) {
    if (err) return done(err);
    var x = JSON.parse(data);
    doOtherThings();
    done(null, x);
  });
}

If we run this in a domain and JSON.parse throws, our process continues.

If we run this in a promise and JSON.parse throws, the process crashes.