eslint-plugin-ckeditor5-rules

Official ESLint plugin used by the CKEditor 5 team for enforcing project-specific code style and linting rules. Current stable version is 15.0.0 (released as part of CKEditor 5 linters config). The plugin follows CKEditor 5's major/minor versioning policy, with breaking changes occurring in major releases. It provides rules for import validation, license headers, no-enum, module tag validation, changelog formatting, and more. Typically used via the eslint-config-ckeditor5 preset, but can be used standalone. Requires Node.js >=24.11.0. Differentiators: tightly coupled with CKEditor 5 development workflow; includes rules like `cross-package-imports`, `no-relative-imports`, and `allow-imports-only-from-main-package-entry-point` that enforce strict module boundaries.