### Before You File a Bug Report Please Confirm You Have Done The Following... - [x] I have tried restarting my IDE and the issue persists. - [x] I have updated to the latest version of the packages. - [x] I have [searched for related issues](https://github.com/typescript-eslint/typescript-eslint/issues?q=is%3Aissue+label%3Abug) and found none that matched my issue. - [x] I have [read the FAQ](https://typescript-eslint.io/linting/troubleshooting) and my problem is not listed. ### Issue Description When using a config which extends another config and the base config uses `project: true`, ESLint fails with a parsing error. Error: `0:0 error Parsing error: project was set to `true` but couldn't find any tsconfig.json relative to '[...]/eslint-extend-config-project-true-bug-repro/src/main.ts' within 'file:///[...]/eslint-extend-config-project-true-bug-repro'` This issue did not occur before version 8.37.0. ### Reproduction Repository Link https://github.com/dgerhardt/eslint-extend-config-project-true-bug-repro ### Repro Steps 1) clone the repo 2) `yarn install` 3) `yarn eslint` 4) `yarn eslint-ci[1-3]` # fails ### Versions <!-- Fill in the relevant versions and delete the others --> | package | version | | -------------------------------------- | ------- | | `typescript-eslint` | `8.38.0` | | `TypeScript` | `5.8.3` | | `ESLint` | `9.32.0` | | `node` | `22.17.1` |