To address: If you are using any of these formatters via the -f command line flag, you’ll need to install the respective package for the formatter. Related issue(s): #17524 Removed require-jsdoc and valid-jsdoc rules The require-jsdoc and valid-jsdoc rules have been removed in ESLint v9.0.0. These rules were initially deprecated in 2018. To address: Use the replacement rules in eslint-plugin-jsdoc