let counter = 0;
 
function childProcessChecker() {
  setInterval(() => {
    try {
      process.send({ msgtype: 'ping', counter: counter++ });
    } catch (ex) {
      // This will come once parent dies.
      // One way can be to check for error code ERR_IPC_CHANNEL_CLOSED
      //     and call process.exit()
      console.log('parent died', ex.toString());
      process.exit(1);
    }
  }, 1000);
}

module.exports = childProcessChecker;