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Writing tests helps you verify that your code works correctly. When you write a function, tests let you check that it produces the expected output for different inputs. This helps catch bugs early and gives you confidence when making changes to your code.
Vitest is fast, easy to set up, and has a simple API that’s similar to other popular testing frameworks. It works great with modern JavaScript (ES6 modules) and provides helpful error messages when tests fail.
Note: Vitest will work with Vite projects, but you don’t need to use npm create vite to use Vitest. Vitest is a standalone testing framework that works in any Node.js project. You can use it with any project setup, not just Vite projects.
In this guide, you’ll learn how to: