Allow async code

[sindresorhus]

Currently, only sync code can be executed.

Could use the beforeExit event.

[kevva]

Don't know if beforeExit is that useful since it's not emitted on process.exit() or other events that causes explicit termination.

[sindresorhus]

Relevant Node.js discussion: nodejs/node#29480

[devsnek]

This is slightly different from that issue actually. We purposely disallow async tasks to be queued while node is exiting, and it isn't a goal of ours to allow that, since you could just delay the process exiting indefinitely...

[Townsheriff]

This is slightly different from that issue actually. We purposely disallow async tasks to be queued while node is exiting, and it isn't a goal of ours to allow that, since you could just delay the process exiting indefinitely...

It wont stop users from stopping process anyway, if they want to dismiss some signals they can do it.

It is very useful for cleaning spawned and detached resources.

[sindresorhus]

We purposely disallow async tasks to be queued while node is exiting, and it isn't a goal of ours to allow that, since you could just delay the process exiting indefinitely...

I could delay it indefinitely synchronously already. I don't see why that should stop a highly desired feature. If delaying it indefinitely is a problem, add a reasonable timeout that can be configured.