Hot reloading on file changes in docker no longer working in typescript 4.9.5

[andersd1]

Bug Report

After upgrading to typescript 4.9.5, hot reloading stopped working in a docker environment. In our use case, we are using nestjs with command nest start xx --watch --tsc. I saw in the issue linked below that there have been changes to the file system. Is there anything docker/nest/typescript can do to get it working again ?

docker/compose#10027

🔎 Search Terms

docker

🕗 Version & Regression Information

After upgrading to typescript 4.9.5

🙁 Actual behavior

Docker no longer detecting file changes

🙂 Expected behavior

Docker should detect file changes

[jakebailey]

After upgrading TypeScript to 4.9.5 from which version?

[andersd1]

From 4.8.4

[submarines-and]

Stopped working for us as well. Maybe this is what changed?

#50366

[RyanCavanaugh]

Yeah, we changed the default filesystem watch implementation to one that's generally more efficient. It's possible your OS/FS/etc environment doesn't support this, however. You can set the "watchFile" setting in your tsconfig to something else; the default is new "usefsevents", but "fixedpollinginterval" is likely to work anywhere.

[andersd1]

fixedpollinginterval worked fine.
Thanks!

[matthandlersux]

posting a recap and adding a few extra keywords since it took me a bit to track down this issue from google... for anyone else that ends up here due to an error that looks like:

error TS6053: File '/path/to/real/file.ts' not found.

i believe the new way that file watching works does not work on macos catalina (10.15.x, and possibly below), so the suggestion above was required. to be more explicit: add to your tsconfig.json:

  "compilerOptions": {
    ...
  },
  "watchOptions": {
    "watchFile": "fixedpollinginterval",
  },

alternatively you can set the following environment variable:

export TSC_WATCHFILE="PriorityPollingInterval"

and here's the section about it in the docs

[nguyenthanhan201]

Yeah, we changed the default filesystem watch implementation to one that's generally more efficient. It's possible your OS/FS/etc environment doesn't support this, however. You can set the "watchFile" setting in your tsconfig to something else; the default is new "usefsevents", but "fixedpollinginterval" is likely to work anywhere.

Thank you. You saved my day.