eslint-config-mourner

A strict, opinionated ESLint configuration for JavaScript projects, maintained by mourner. The current stable version is 4.1.0, released in early 2025. It migrated to ESLint's flat config format in v4, removing deprecated rules and incorporating @stylistic/plugin for code style. Compared to alternatives like airbnb or standard, this config is designed to be comprehensive yet easy to adopt incrementally, with automatic fixes supported. Release cadence is irregular, with major version bumps for breaking config changes.