How to catch the output of a process?

Question

Node.js

For example: there was a process - and then an error occurred in it, which led to a crash, or I or pm2 (for example) decided to turn off the process. This is the moment I need to catch

Answer 1

Try this, it works for me when I press "ctrl+c"

process.on('SIGINT', function () {
  console.log("exit");
  process.nextTick(function () { process.exit(0); });
});

And I looked, here they write that for "SIGKILL" it is impossible to make an event.