options.overrideConfigFile looks in subfolder if eslint.config.mjs and linted file are in the same directory

[SedrickHeiniger]

Summary

The issue in a short sentence:

If "options.overrideConfigFile": "./config/eslint.config.mjs" a linted file at ${workspaceFolder}/config/someFile.mjs looks in ${workspaceFolder}/config/config/eslint.config.mjs for a config file.

Some Points to Mention

• This happens if the eslint.config.mjs and someFile.mjs are in the same directory.
• It also happens if eslint.config.mjs has nothing except export default {} in it (tested).
• It doesn't happen if you put the absolute path to the eslint.config.mjs into options.overrideConfigFile (in settings.json) (tested).

Currently I've just moved my eslint.config.mjs to my root because of this.

Thank you so much for fixing this! (If I'm not the one doing something wrong 🙂).

Reproducing this Bug

Setup:

eslint.config.mjs:

export default {};

settings.json (Snippet)

"eslint.options": {
    "overrideConfigFile": "config/eslint.config.mjs",
  },

File System: (eslint.config.mjs and dev-server.mjs are both in ${workspaceFolder}/config/)

Output:

When updating settings.json ESLint will start linting and you'll get the following error in the ESLint console in the VS Code "output" panel.

[Error - 3:47:18 PM] Calculating config file for file:///c%3A/Users/sedri/OneDrive/Desktop/Projects/WebAppDevelopment/HelloWorld/config/dev-server.mjs) failed.
Error: ENOENT: no such file or directory, stat 'C:\Users\sedri\OneDrive\Desktop\Projects\WebAppDevelopment\HelloWorld\config\config\eslint.config.mjs'

[dbaeumer]

@SedrickHeiniger does the same happen when you lint the file in the terminal specify the config file as a command line option. If so, can you please provide me with a GitHub repository I can clone with a minimal setup that demos what you are seeing. Thanks!

[SedrickHeiniger]

@dbaeumer When moving eslint.config.mjs back to the config directory and then running npx eslint -c config/eslint.config.mjs . everything works fine.

[dbaeumer]

So., can you please provide me with a GitHub repository I can clone with a minimal setup that demos what you are seeing. Thanks

[SedrickHeiniger]

@dbaeumer Well, I've just made a new minimal project and there everything worked as it should. Then I've uncommented my old ESLint extensions settings in my actual project for reproducing the bug and now this also works fine! 🙂

I'm new in software development and not very experienced. Maybe (hopefully) I've just made a stupid mistake. I'm not able to reproduce it anymore so I think you can close this issue. I'll make a new issue if it should happen again.