Template Literals

A common use case for tagged templates in modern JavaScript frameworks is CSS styling in component libraries. Libraries like styled-components, emotion, and lit-element use tagged templates to define CSS styles directly in JavaScript files. For example, in styled-components, you might write `const Button = styled.button`background: ${props => props.primary ? 'blue' : 'white'};`` to create a styled button component. The tagged template approach enables several powerful features: dynamic styling based on props, automatic scoping of styles to components, type checking with TypeScript, syntax highlighting with appropriate editor plugins, and the ability to extend and compose styles. This pattern has become a foundational technique in the CSS-in-JS ecosystem, allowing for more maintainable and component-centric styling approaches in modern web applications.