sigint.js

// INSTRUCTIONS

/*
* 1) Run node sigint.js and call ctrl-c, then wait 1 second (for process to exit)
* Expected output: SIGINT 1
*
* 2) Run npm start (see end of file for example, which runs node sigint.js) and call ctrl-c, then wait 1 second (for process to exit)
* Expected output SIGINT 1
* Unexpected output SIGINT 2
*/

let called = 0;

// do not auto kill
setTimeout(() => {}, 1000000);

process.on('SIGINT', () => {
	console.log('SIGINT', ++called);
	setTimeout(() => {
		process.exit(0);
	}, 1000);
});

// NPM package.json example
// here for accessibility purposes

// {
//   "scripts": {
//     "start": "node sigint.js"
//   }
// }