node error handling

gistfile1.txt

var util = require('util');
 
var d = require('domain').create();
 
d.on('error', function(err){
    try {
        
        // make sure we close down within 10 seconds
        var killtimer = setTimeout(function() {
          process.exit(1);
        }, 10000);
        // But don't keep the process open just for that!
        killtimer.unref();
        
        console.log('critical error ' + util.inspect(err, { showHidden: true}));
        
      } catch (er2) {
        // oh well, not much we can do at this point.
        console.error('Error ', er2);
      }
      
});
 
d.run(function(){
  
    /*
    *
    * DO YOUR STUFF HERE
    *
    *
    */
    
});