* some plugins were written in esm. e.g. [eslint-plugin-react-hooks](https://github.com/facebook/react/blob/c62986cfd8cbf994348407c8ece06b04ec1c86f4/packages/eslint-plugin-react-hooks/src/RulesOfHooks.js) * plugins authors can write native esm once the new config system landed. refs: https://github.com/eslint/eslint/issues/13481 https://github.com/eslint/rfcs/pull/9