React The skill is based on React, generated at 2026-01-31. React is a JavaScript library for building user interfaces. It lets you compose complex UIs from small and isolated pieces of code called "components". React uses a declarative paradigm that makes it easier to reason about your application and aims to be both efficient and flexible. Core References | Topic | Description | Reference | |-------|-------------|-----------| | useState | Hook for managing component state with direct updates | core-usestate | | useEffect | Hook for synchronizing components with external systems | core-useef…