React is a free and open-source front-end JavaScript library for building user interfaces based on components. It is maintained by Meta and a community of individual developers and companies.

State in React is any data that should be saved and modified without necessarily being added to a database. It allows you to create components that are dynamic and interactive.

Hooks are functions that let you “hook into” React state and lifecycle features from function components. Hooks don’t work inside classes — they let you use React without classes.

Yes, React has excellent support for TypeScript. Using TypeScript with React allows you to add static types to your components, improving code quality and maintainability.