Error: Unable to remove watcher: Invalid argument

[kennsippell]

I'm running some watcher code in automated tests via mocha, docker, and GitHub CI. Tests make calls to subscribe(), perform some file operations (eg. move a folder of files), and then call unsubscribe().

We are getting the following intermittent failure from await unsubscribe()

Error: Unable to remove watcher: Invalid argument

I've been trying to get a stable repro of this problem by calling subscribe/unsubscribe in a loop with some predictable file operations. Unfortunately, I'm not able to nail down anything stable. I thought I'd still report the issue even without any actionable steps to start a conversation and make the problem searchable.

If somebody wanted to dig in, we can reproduce the problem in about 1/5 runs of this public github CI suite.

[truesteps]

Any updates/workarounds on this issue :)? I managed to reach this somehow, it seems that parcel watcher is watching for changes in the .git folder, is there any way to ignore watching some directories for changes? I didn't seem to find anything in Parcel API documentation