Edit (JoshuaKGoldberg, May 12th): now that #9002 is merged, the v8 versions of typescript-eslint starting with v8.0.0-alpha.10 now support ESLint v9. Hooray! 🙌 If you still have problems with typescript-eslint and ESLint v9: Please make sure you're using typescript-eslint@8.0.0-alpha.10 or newer Go through our issue chooser to file a new issue reporting your problems That issue template includes