Hanging promise after close() in flowing mode

[jichu4n]

SerialPort Version

12.0.0

Node Version

v18.18.2

Electron Version

No response

Platform

Linux devfox 6.8.2-arch2-1 #1 SMP PREEMPT_DYNAMIC Thu, 28 Mar 2024 17:06:35 +0000 x86_64 GNU/Linux

Architecture

x64

Hardware or chipset of serialport

Prolific Technology, Inc. PL2303 Serial Port / Mobile Phone Data Cable

What steps will reproduce the bug?

1. Attach a USB-to-serial adapter to the computer and leave the serial port side disconnected so no data is available to read.
2. Create a SerialPort instance and attach a data callback: serialport.on('data', (data) => { ... }).
3. Wait a few seconds, then close the SerialPort instance: serialport.close(...). (Adding pause() or destroy() produces the same result)

Minimal repro: serialport-test.ts

What happens?

Even after calling close() or destroy(), the promise created on unix-read.ts:41 never resolves / rejects. As a result, Node.js is prevented from exiting indefinitely.

See sample output from the minimal repro program above.

What should have happened?

The program should be able to exit cleanly after close() / destroy() is called.

Additional information

No response