recompose

recompose is a JavaScript utility library for React, providing a collection of higher-order components (HOCs) and utility functions designed to enhance functional component patterns. It allows developers to compose multiple concerns into a single component, such as managing local state (`withState`), handling side effects (`lifecycle`), mapping props (`mapProps`), and creating event handlers (`withHandlers`). The current stable version is 0.30.0, released in late 2018. The author explicitly announced the discontinuation of active maintenance in October 2018, recommending React Hooks as a superior alternative that addresses the same problems and more. Its primary differentiator was enabling a purely functional approach to component logic before the native React Hooks API existed, offering a declarative way to abstract component logic and state management without relying on class components.