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If you’re working with Vite, then you’ll love Vitest. It’s a test runner that integrates seamlessly with Vite projects and has a Jest-like API, so it’s easy to pick up if you’re familiar with Jest.

SetInterval is a built-in JavaScript function that repeatedly calls a function or executes a code snippet at specified time intervals. In React components, setInterval is often used for tasks like fetching data from an API periodically, updating UI components, or implementing real-time features.

Testing React components involves not only verifying their rendered output but also ensuring that their methods and functionalities behave as expected. In this article, we'll explore how to test methods of React components using TypeScript, along with examples.

Testing React components in isolation within a Storybook environment offers several advantages, including the ability to test component variations and edge cases efficiently. By using Testing Library alongside Storybook, developers can write tests that accurately reflect user interactions and validate component behavior across different scenarios.

Vitest is a minimalistic, framework-agnostic testing library designed for modern JavaScript projects. It provides a simple API for writing and running tests without the complexity of a larger testing framework like Jest. React Testing Library, on the other hand, is a testing utility for React that encourages testing components in a way that simulates user behavior.