5 React Libraries Every Developer Should Know.

React Router: React Router is a routing library for React applications that allows you to declaratively specify routes in your application. With React Router, you can define different routes for different parts of your application and easily navigate between them using the ROUTE and LINK components. You can also use the useParams hook to access route parameters in your components.

Redux: Redux is a state management library for React applications that allows you to centralize the management of your application's state. With Redux, you define a single store for your entire application, and use reducers to update the state in a predictable way. You can then use the connect function from the react-redux library to connect your React components to the store and access the state.

Axios: Axios is a library for making HTTP requests in a React application. It provides a simple API for making requests to APIs, and allows you to easily handle the response data in your application. You can use Axios to make GET, POST, PUT, DELETE, and other types of HTTP requests, and you can also set headers, add query parameters, and handle errors.

Material-UI: Material-UI is a library that provides pre-built React components that follow the material design guidelines. It includes a wide range of components such as buttons, forms, dialogs, and navigation bars, all styled to look consistent with the material design aesthetic. Material-UI also provides a customizable theme to allow you to easily change the colors and typography of your application.

react-testing-library: react-testing-library is a library for testing React components. It provides a simple and flexible API for testing the behavior and rendering of React components, making it easier to write reliable and maintainable tests. With react-testing-library, you can test the state and props of your components, as well as their behavior when interacted with or when events are fired. You can also use the render function to render a component and its children and make assertions about the rendered output.