LangSteps — React Mastery (100 Concepts Explained)

2013: React 0.3 (Open Source)

Facebook open-sources React at JSConf US. The Virtual DOM concept revolutionizes UI development.

2015: React 0.14 (Stateless Components)

Stateless functional components introduced. React Native launches for mobile development.

2017: React 16 (Fiber Architecture)

Complete rewrite with Fiber. Error Boundaries, Portals, and Fragments arrive.

2019: React 16.8 (Hooks Revolution)

Hooks (useState, useEffect, etc.) transform how developers write components. Class components begin fading.

2022: React 18 (Concurrent Features)

Automatic batching, Suspense, useTransition, useDeferredValue. Concurrent rendering unlocked.

2024-25: React 19 (The Future)

Server Components, Actions, use() API, React Compiler. The biggest evolution since Hooks.

React Mastery