Cannot terminate whilst running imported function

[MauritsWilke]

Version

v18.10.0

Platform

Linux Dennis 5.15.74-3-MANJARO #1 SMP PREEMPT Sat Oct 15 13:39:11 UTC 2022 x86_64 GNU/Linux

Subsystem

No response

What steps will reproduce the bug?

1. Create an index.js file that has an async function
2. In said function, import a javascript file using await import()
3. In the imported file have an async function that has a while(true) loop
4. set a variable in the function to the imported function
5. run index.js and try terminating whilst the while(true) loop is running (using ctrl+c)

Or use the repo where this occurs:

1. Clone https://github.com/MauritsWilke/AdventOfCode
2. Add a folder 22 under src/2015 and put in a part1.ts with the following code:

export default function solution(input:string) {
	while(true) {};
}

4. Install the required modules and run tsc to compile (if it doesn´t happen automatically in VSC)
5. Run node . and use the arrow keys to select the year 2015, the day 22 and the part 1

How often does it reproduce? Is there a required condition?

Every single time I run it on both the given platform and a windows platform

What is the expected behavior?

I expect ctrl+c to terminate the program.

What do you see instead?

Well nothing because it aint terminating :)

Additional information

No response

[Trott]

@nodejs/modules

[ljharb]

Does this happen without TLA, or without ESM, or does it require all of these conditions?

[MauritsWilke]

I would have to set up some testing for that if it's really important

[ljharb]

Narrowing down how broad the scope is seems important :-) that would be appreciated!

[MauritsWilke]

Okay will do!

[MauritsWilke]

I am failing to replicate this issue in a different folder. It might take some time for me to narrow down the issue

[MauritsWilke]

I have not managed to narrow it down and am unable to repoduce it. If anyone wants to give it a shot be my guest but at this point i'm unsure if it has to do with NodeJS or a weird TypeScript error.

[GeoffreyBooth]

Closing as unreproducible, if you have a minimum reproduction please comment and we can reopen.

[j4k0xb]

Here's a minimal reproduction that can't be terminated with ctrl+c (tested with the same OS, node 14, 16, 18):

process.on('SIGINT', () => process.exit(0));
while (true);

but these programs can be terminated:

while (true);

process.on('SIGINT', () => process.exit(0));
setTimeout(() => { }, 10_000);

inquirer used in @MauritsWilke's AdventOfCode example also set up a sigint handler.

Seems to be a duplicate issue: #9050

For anyone else who stumbles across this issue and wants a workaround: create a child process, worker_thread or fork that runs the sync/loop code. It can be terminated by the main process at any time.