gistfile1.js

var db     = null,
    server = null;

initialise()
    .then(function (_db) {
        db = _db
        return createServer(db);
    })
    .then(function (_server) {
        server = _server;
        return server.listen(3000);
    })
    .then(function () {
        console.log('listening on 3000');
    });
    
process.on('uncaughtexception', function (error) {
    console.error(error.stack);
    server.close()
        .then(function () {
            return db.close()
        })
        .then(function () {
            process.exit(1);
        });
})