Need help with shared eslint (V9) setup.

[CodeDragon03]

1. Versions

   • Node.js: v22.18.0
   • npm: 10.15.0(Using pnpm and TurboRepo)
   • ESLint: v9.34.0
   • ESLint VS Code Extension: v3.0.19

2. Configuration & Repository

   • Repository: https://github.com/CodeDragon03/Monorepo.git
   • Editor: VS Code (latest version)

Relevant Log:

2025-09-16 17:48:19.006 [error] Calculating config file for file:///home/code-dragon-03/Desktop/High%20Priority/Monorepo/packages/eslint-config/config/base.config.js) failed. Error: Could not find config file. at assertConfigurationExists (/home/code-dragon-03/Desktop/High Priority/Monorepo/node_modules/.pnpm/[email protected]/node_modules/eslint/lib/config/config-loader.js:80:17)

3. Description of the Problem

When opening or modifying a file within the packages/eslint-config directory, the VS Code ESLint extension throws an error: Error: Could not find config file. The issue seems to be with the extension’s ability to locate and process the shared ESLint configuration files within the monorepo structure.

4. Steps to Reproduce

   • Clone the repository: git clone https://github.com/CodeDragon03/Monorepo.git
   • Install dependencies: pnpm install
   • Open the project in VS Code.
   • Navigate to packages/eslint-config/config and open any file or packages/eslint-config/package.json.
   • Observe the ESLint extension log in the Output panel, where the error will be visible.

5. What I’ve Already Tried

   • Re-installing node modules with pnpm install.
   • Reloading VS Code and restarting the ESLint server.
   • Checking the file paths to ensure they are correct. The path in the error log appears correct relative to the project root.

The issue appears to be specific to how the ESLint VS Code extension handles a shared configuration package within a monorepo, as other files (e.g., source code in packages/web) don’t immediately trigger this error and eslint rules are not working as well.

Thank you for you attention (^^).

[anthonyshew]

Hi, that link is unreachable for me, but npx create-turbo@latest has an ESLint 9 setup to start with.

[CodeDragon03]

I tried the npx create-turbo@latest but got the the same error don't know why may be my editor issue, is their any editor sepcific settings i should look for?

@anthonyshew @JoshuaKGoldberg

2025-09-17 00:33:28.045 [info] ESLint server is starting.
2025-09-17 00:33:28.045 [info] ESLint server running in node v22.18.0
2025-09-17 00:33:28.045 [info] ESLint server is running.
2025-09-17 00:33:30.627 [info] ESLint library loaded from: /home/code-dragon-03/Desktop/Monorepo/node_modules/.pnpm/[email protected]/node_modules/eslint/lib/api.js
2025-09-17 00:33:31.389 [error] Calculating config file for file:///home/code-dragon-03/Desktop/Monorepo/packages/eslint-config/base.js) failed.
Error: Could not find config file.
    at assertConfigurationExists (/home/code-dragon-03/Desktop/Monorepo/node_modules/.pnpm/[email protected]/node_modules/eslint/lib/config/config-loader.js:80:17)
    at LegacyConfigLoader.loadConfigArrayForFile (/home/code-dragon-03/Desktop/Monorepo/node_modules/.pnpm/[email protected]/node_modules/eslint/lib/config/config-loader.js:414:3)
    at async ESLint.calculateConfigForFile (/home/code-dragon-03/Desktop/Monorepo/node_modules/.pnpm/[email protected]/node_modules/eslint/lib/eslint/eslint.js:1165:4)
    at async ESLint.isPathIgnored (/home/code-dragon-03/Desktop/Monorepo/node_modules/.pnpm/[email protected]/node_modules/eslint/lib/eslint/eslint.js:1205:18)
    at async /home/code-dragon-03/.vscode/extensions/dbaeumer.vscode-eslint-3.0.19/server/out/eslintServer.js:1:186164
    at async Object.O [as withClass] (/home/code-dragon-03/.vscode/extensions/dbaeumer.vscode-eslint-3.0.19/server/out/eslintServer.js:1:182205)
    at async t.workspace.getConfiguration.then.N.then.b.validate (/home/code-dragon-03/.vscode/extensions/dbaeumer.vscode-eslint-3.0.19/server/out/eslintServer.js:1:186135)
    at async /home/code-dragon-03/.vscode/extensions/dbaeumer.vscode-eslint-3.0.19/server/out/eslintServer.js:1:29071
    at async /home/code-dragon-03/.vscode/extensions/dbaeumer.vscode-eslint-3.0.19/server/out/eslintServer.js:1:11102

[anthonyshew]

I'm not aware of any settings that might need changed and I'm unable to reproduce the issue.

[CodeDragon03]

Sorry for not being clear with the exact issue as i'm still on it and don't know what's the cause, was in a rush for some last min deadlines but would report back soon with clearer description and pin point steps!

thank you for you'r attention (^^)