tsc --watch via directory-level fsevents not working on macOS 14.4 about typescript

[llllvvuu]

I found the bisect:

git checkout dc113f8170 // latest `main` as of this post
git revert e40730f
npm run build && npm run build:compiler

I suspect the issue is that the modifiedTime is the modified time of the directory, not the file. At least when I console.log it and compare with stat this seems to be the case, and fileOrDirectory is printing as the directory and only relativeFileName has the file.

[NMinhNguyen]

Just to add an observation: I think this issue is Sonoma specific as watch seems to work on 13.6.4 (Ventura).

[llllvvuu]

When testing this issue, make sure you don't use Vim. Creating/deleting files seems to trigger the file watcher, so it's possible for Vim users to not notice this issue (possibly due to swap files) while VSCode users do.

Consistent repro can be done like:

tsc --watch --watchFile usefseventsonparentdirectory
echo "console.log('Hello world!')" > main.ts
cat main.js
echo "console.log('Hello world 2!')" > main.ts
cat main.js

[o-alexandrov]

For anyone (like me just now) who stumbles on this, the fix hasn't been released on npm yet in non-next tags.