Before You File a Bug Report Please Confirm You Have Done The Following...

• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages.
• I have searched for related issues and found none that matched my issue.
• I have read the FAQ and my problem is not listed.

Playground Link

https://github.com/lnuvy/eslint9-eslint-typescript-8.18.1

Repro Code

import tseslint from "typescript-eslint";

ESLint Config

import js from "@eslint/js";
import globals from "globals";
import tseslint from "typescript-eslint"; // An error occurs on this line

export default tseslint.config(
  ...

tsconfig

{
  "compilerOptions": {
    "strict": true,
    "esModuleInterop": true,
    "skipLibCheck": true,
    "target": "es5",
    "module": "NodeNext",
    "moduleResolution": "nodenext",
    "baseUrl": "."
  }
}

Expected Result

expected the import line to work without errors

Actual Result

Unable to resolve path to module 'typescript-eslint'.eslintimport/no-unresolved

Additional Info

Hello!
this is an issue I discovered while setting up ESLint 9 in a monorepo.
I found a potentially related issue (#10508), but there is a key difference: the error does not occur in the import statement for that case. I apologize if this turns out to be a duplicate that I overlooked.

I'm sharing a reproducible repository and images.

First image's project uses the Yarn package manager, while the images showing the error are from a project using the pnpm package manager.

Even after trying various versions of TypeScript, ESLint, and typescript-eslint, the error consistently occurs only in pnpm projects.

Functionally, everything works as expected, so using something like // eslint-disable-next-line import/no-unresolved is an option. but, I think this is not a fundamental solution, which is why I am reporting this issue.

Thank you :)