Auto Re-Run AppEngine NodeJS

autorun.js

var child_process=require('child_process'),fs=require('fs');
var dir="/Users/kaan/project";

process.env.GOOGLE_CLOUD_PROJECT="project-dev";
process.env.GOOGLE_APPLICATION_CREDENTIALS=dir+"/utility/service_account.json";

var node_sdk=null;
function rerun_node_sdk()
{
	if(node_sdk) node_sdk.kill();
	node_sdk=child_process.spawn("node",[dir+"/main.js"],{cwd:dir,env:process.env,stdio: "inherit"});
	node_sdk.on('spawn',()=>{
		console.log("\x1b[35m[AUTORUN]\x1b[0m spawned the process");
	});
	node_sdk.on('error',(err)=>{
		console.error("\x1b[35m[AUTORUN]\x1b[0m Failed to spawn the process: "+err);
	});
	node_sdk.on('close',(code)=>{
		console.log("\x1b[35m[AUTORUN]\x1b[0m process exited with code"+code);
	});
}

rerun_node_sdk();

watcher1=fs.watch(dir,{recursive:true},function(event,fname){
	rerun_node_sdk();
});

process.stdin.on('data',function(chunk){
	if(chunk.indexOf("\n")!=-1)
		rerun_node_sdk();
});