JavaScript/TypeScript Unit Testing
Unit testing frameworks like Jest, Mocha, and Vitest. Support both browser and Node.js environments for modern test development.
GitHub Star Comparison
| No | Name | GitHub Stars | Description | Trend | License | Type | Official Site |
|---|---|---|---|---|---|---|---|
| 1 | Cypress | ⭐ 48.8k | Modern testing framework primarily for E2E testing but also usable for unit testing. Plays important role in frontend development with browser execution, real-time debugging, and automatic screenshot features. | Testing tool occupying important position in modern frontend development in 2025. Mainly used for E2E testing but also utilized for component testing, particularly popular in React and Vue.js projects. | MIT | E2E/Component Testing Framework | Official |
| 2 | Jest | ⭐ 44.9k | JavaScript testing framework developed by Facebook (Meta). Provides snapshot testing, mocking, and code coverage with zero configuration. Optimized for frontend development including React with built-in mocking, snapshot, and coverage features. | Most popular JavaScript testing framework as of 2025. 27.15 million weekly downloads, established as standard choice in enterprise environments. | MIT | Testing Framework | Official |
| 3 | Mocha | ⭐ 22.8k | Mature JavaScript testing framework existing since 2011. Offers high extensibility and flexibility, capable of handling complex testing scenarios through combination with external libraries. Records 9.6 million weekly downloads. | Still selected in 2025 for complex projects or cases requiring advanced customization as a reliable framework. While Jest and Vitest tend to be chosen for new projects, usage continues in existing projects. | MIT | Testing Framework | Official |
| 4 | Jasmine | ⭐ 15.8k | Simple BDD framework used as foundational technology for Jest. Operates standalone without dependencies and allows writing tests in readable, natural language-like syntax. Framework with frequent usage in legacy projects. | As of 2025, mainly used in legacy projects with declining new adoption. However, maintains persistent popularity among developers who value simplicity and is also seen in educational use. | MIT | BDD Testing Framework | Official |
| 5 | Vitest | ⭐ 14.7k | Next-generation testing framework optimized for Vite ecosystem. Provides 4x faster test execution than Jest with Jest-compatible API. Delivers modern development experience with native ESM support, full TypeScript support, and HMR compatibility. | Rapidly growing modern testing framework in 2025. Expanding adoption in Vite, Vue.js, and Nuxt projects with increasing popularity among performance-focused developers. | MIT | Testing Framework | Official |