You don't need CSS preprocessor

CSS preprocessors, once seen as essential, are now considered less valuable due to advancements in modern CSS. Features like variables, nesting, and operations are now natively supported in CSS, negating a key advantage. While preprocessors offer mixins, maps, and functions, JavaScript provides similar functionalities with greater flexibility. The author advocates for CSS-in-JS solutions, utilizing JavaScript and browser-supported constructed stylesheets. These constructed stylesheets enable style reuse and dynamic changes more easily. The text provides JS alternatives for preprocessor examples, demonstrating their functionality can be replicated. The author highlights the costs of using preprocessors: dependencies, learning a new syntax, and build tool setup. The author argues that the effort outweighs the benefits, especially with the capabilities of JavaScript and constructed stylesheets. Preprocessors restrict scope and primarily solve one problem that has simpler alternatives. The author believes constructed stylesheets have transformed the landscape and is building tools to improve them further. Knowing preprocessors is beneficial, but actively using them might not be the most efficient approach in modern development.