eslint-plugin-eslint-config

ESLint plugin for linting ESLint configuration files, ensuring they are valid and consistent. Current stable version is 2.0.0, released January 2021, with a slow release cadence focused on bug fixes. Key differentiators: validates exported configs via execution, provides presets (recommended-rules, rc, all), and includes rules for deprecated/unknown rules and sorting. Requires ESLint >=5 and Node >=10, with peer dependency on eslint.