jest

Jest is a delightful and comprehensive JavaScript testing framework that works out of the box for most JavaScript projects. Its core advantages include a fast, interactive watch mode that provides instant feedback by solely running test files related to changed code, and powerful snapshot testing to effortlessly capture and analyze changes in large objects or UI components. Furthermore, Jest seamlessly integrates with modern frontend tools like Babel, TypeScript, Webpack, and Vite.

• Out-of-the-box JS/TS testing
• Interactive watch mode for instant feedback
• Powerful snapshot testing
• Seamless toolchain integration (Babel, Webpack, Vite)