Nodejs cluster up the worker process if it fails

Cluster.js

var http = require('http');
var cluster = require('cluster');
// The master's job to spawn workers initially and when they die
if (cluster.isMaster) {
    // Get the number of processor cores
    var cpuCount = require('os').cpus().length;

    // Create a worker for each CPU
    for (var i = 0; i < cpuCount; i += 1) {
        cluster.fork();
    } // When a worker exits, fork a new one 


    cluster.on('exit', function(worker) {
        console.log('Worker %d died', worker.id);
        cluster.fork();
    });
  
} else if (cluster.isWorker) {
    // The real work here for the worker 
    http.createServer(function(request, response) {
        console.log('Ready to accept request');
        // This will cause the server to crash 
        var i = n.start;
        response.writeHead(200, {
            'Content-Type': 'text/plain',
            'Access-Control-Allow-Origin': '*'
        });
        response.end('Hello World\n');
    }).listen(1337);
    // Exit the process when there is an uncaught exception 
    console.log('Worker %d running!', cluster.worker.id);
    process.on('uncaughtException', function() {
        console.log('Handled the exception here');
        process.exit(1);
    });
}