Allows the use of CSS Modules in projects built using Webpack. Also interprets @import and url() like import/require() and will resolve them.
Tooling | react.framework.dev
PostCSS takes a CSS file and provides an API to analyze and modify its rules (by transforming them into an Abstract Syntax Tree). This API can then be used by plugins to do a lot of useful things, e.g., to find errors automatically, or to insert vendor prefixes.
Sass is a very mature, stable, and powerful professional grade CSS extension language. It provides a superset of CSS with features like nesting, variables, imports and mixins.
Use TypeScript as your preprocessor. Write type‑safe, locally scoped classes, variables and themes, then generate static CSS files at build time.
Create React apps with no build configuration. You don't need to learn and configure many build tools. Instant reloads help you focus on development. When it's time to deploy, your bundles are optimized automatically.
Storybook is a development environment for UI components. It allows you to browse a component library, view the different states of each component, and interactively develop and test components.