gistfile1.js

var domain = require('domain');
var d = domain.create();

d.on('error', function() {
    console.log('error handler')
});

d.run(function doStuff() {
  require('fs').readFile('not here', 'utf8', function(data) {
      console.log('readFile complete');
      throw new Error('throw from readFile cb');
  });
});