Could not apply prettier

[AlexanderArvidsson]

When trying to run prettier-js or when saving with prettier-js-mode, all I am getting is the following:

Wrote c:/Users/xxx/AppData/Local/Temp/prettiergc1tvy.jsx
Could not apply prettier

The error buffer only says prettier errors: followed by nothing.
Is there any way to see what errors is causing this?
The file it says it wrote is also not there, I assume because they are deleted right after?

I am on windows and have installed diff and verified that it works.
Running prettier cli on the file returns the formatted code, the issue is just that it fails to apply the diff I guess.
Using emacs version GNU Emacs 26.2 (build 1, x86_64-w64-mingw32) of 2019-04-13
Using Doom-emacs with default config and prettier-emacs added.

I'll set everything up the same on my arch laptop, it's probably just an issue with Windows.

[t1anchen]

I got similar situation and resolved by using a newer version of diff. hopefully it could help

[jacksonrayhamilton]

Hi Alexander, sorry no one was able to get back to you in the long time since you posted this. Did you ever resolve your issue?

It sounds to me like the problem you were having was not with diff, but rather that prettier was encountering an error; that's when the plugin would show the "prettier errors:" buffer. prettier may also have done a poor job of printing diagnostic information at the time; other issues (from years ago) have reported prettier producing no output in error situations. With the latest Prettier (3.6.2), I do see detailed error messages for config file issues and code syntax errors, at least on macOS.

Our test suite is passing on Windows, and other users seem to have had success with the plugin there. We've also improved the configuration error detection inside the plugin, so it might be worth another try!