A template or theme refers to a pre-designed layout or structure that provides a basic framework for building a specific type of application or website. It typically includes good design, placeholder content and functional features, allowing developers to customize and fill in the details according to their specific needs.

ESLint is a linter for JavaScript that analyzes code to detect and report on potential problems and errors, as well as enforce consistent code style and best practices, helping developers to write cleaner, more maintainable code.

Stylelint is a modern linter for CSS that helps you avoid errors and enforce consistent styling conventions. It provides rules for detecting errors and warnings, and can be configured to match your specific project's requirements.