Does not wait for child process termination when using node's "--inspect" option

• nodemon -v: 2.0.7
• node -v: 14.17.2
• Operating system/terminal environment: Ubuntu
• Command you ran: nodemon --inspect=9223 index.js

Expected behaviour

Nodemon should wait for the child process termination before starting a new process.

Actual behaviour

When using node’s “–inspect” option, Nodemon does not wait for the process termination before starting a new process.

Steps to reproduce

Run nodemon --inspect index.js and trigger a restart Contents of index.js

console.log('Started:', process.pid);

process.on('SIGUSR2', () => {
  // Delay process termination
  setTimeout(() => {
    console.log('Shutting down:', process.pid);
    process.exit(0);
  }, 100);
});

// This is only to keep the process alive
setTimeout(() => {}, 100000);

It works fine when the “–inspect” option is not used

[Wesitos]

I think it’s because sh does not propagates signals to a blocking child processes (https://unix.stackexchange.com/a/196053) at least in linux, I have no way of testing this on macos. And the way nodemon runs a process (using “spawn”) outside windows is running sh -c. I think this could be fixed by spawning the child process in a bit more complex sh script (with proper signal handling). Maybe calling exec is enough :v

[github-actions[bot]]

Automatically closing this issue due to lack of activity