#!/usr/bin/env node 'use strict'; var assert = require('assert'); var cluster = require('cluster'); assert(process.send); assert(!cluster.worker); console.log('Hello from spawn-a-child!'); console.log('Args', JSON.stringify(process.argv.slice(2))); process.on('message', function (value) { if (value === 128) process.exit(); process.send(value * 2); });