Jest vs Vitest
Comparación detallada para ayudarte a elegir la herramienta correcta en 2026
🏆 Veredicto Rápido
Ganador: Vitest
Vitest is the recommended choice for new projects, especially those using Vite. It's faster, has native ESM/TypeScript support, and offers a Jest-compatible API for easy migration. Jest remains solid for existing projects.
📚 Explore More
📊 Visual Comparison
Comparación de Puntuación General
Desglose por Categoría
Jest Destacados
- ✅ Industry standard with massive adoption
- ✅ Zero-config for most projects
- 💰 Free
Vitest Destacados
- ✅ Blazing fast execution with Vite
- ✅ Native ESM and TypeScript support
- 💰 Free
Comparación de características
| Feature | Jest | Vitest |
|---|---|---|
| Configuration | Zero-config or jest.config | vitest.config or vite.config |
| Watch Mode | ✓ | Smart with HMR |
| Mocking | Built-in jest.mock() | Built-in vi.mock() |
| Code Coverage | Built-in (Istanbul) | Built-in (v8 or Istanbul) |
| Snapshot Testing | Built-in | Built-in |
| Parallel Execution | Worker-based | Worker threads |
| TypeScript | Via ts-jest or @swc/jest | Native (via Vite) |
| ESM Support | Experimental | Native |
| Browser Testing | Via jsdom | Vitest Browser Mode |
| IDE Integration | Excellent | Good (VS Code extension) |
¿Qué es Jest?
Jest is the most popular JavaScript testing framework, created by Facebook. It provides a zero-config testing experience with built-in mocking, code coverage, and snapshot testing.
✅Ventajas
- •Industry standard with massive adoption
- •Zero-config for most projects
- •Built-in mocking and assertions
- •Snapshot testing
- •Great IDE integration
- •Huge community and ecosystem
❌Desventajas
- •Slow for large test suites
- •ESM support still evolving
- •Heavy dependency footprint
- •Configuration can become complex
- •Watch mode less responsive than Vitest
- •Not optimized for Vite/modern tooling
¿Qué es Vitest?
Vitest is a blazing-fast unit testing framework powered by Vite. It offers Jest-compatible APIs with native ESM support, TypeScript integration, and significantly faster execution.
✅Ventajas
- •Blazing fast execution with Vite
- •Native ESM and TypeScript support
- •Jest-compatible API (easy migration)
- •Excellent watch mode with HMR
- •Built-in UI for test visualization
- •First-class Vite integration
❌Desventajas
- •Smaller community than Jest
- •Newer with less battle-testing
- •Some Jest plugins not compatible
- •Best experience requires Vite
- •Less IDE integration than Jest
- •Ecosystem still growing
Comparación de precios
📊Análisis en Profundidad: Jest vs Vitest
Elegir entre Jest y Vitest puede ser desafiante, ya que ambas herramientas ofrecen características atractivas para flujos de trabajo modernos. En esta comparación completa, analizaremos cada aspecto para ayudarte a tomar una decisión informada.
Jest
Jest is the most popular JavaScript testing framework, created by Facebook. It provides a zero-config testing experience with built-in mocking, code coverage, and snapshot testing.
Vitest
Vitest is a blazing-fast unit testing framework powered by Vite. It offers Jest-compatible APIs with native ESM support, TypeScript integration, and significantly faster execution.
🎯Mejores Casos de Uso
Cuándo elegir Jest
- ✓Para Equipos:
Industry standard with massive adoption
- ✓Para Pequeñas Empresas:
Zero-config for most projects
- ✓Para Empresas:
Built-in mocking and assertions
Cuándo elegir Vitest
- ✓Para Individuos:
Blazing fast execution with Vite
- ✓Para Pequeñas Empresas:
Native ESM and TypeScript support
- ✓Para Equipos:
Jest-compatible API (easy migration)
🔍Análisis Profundo de Características
Configuration
Watch Mode
Mocking
Code Coverage
Snapshot Testing
Parallel Execution
💰Análisis de Precios
Jest
Open source
✅ Free tier availableVitest
Open source
✅ Free tier available💡 Pro Tip
Both tools offer free trials or tiers. We recommend testing both with your actual workflow before committing to a paid plan.
🏆Nuestra Recomendación
Después de un análisis y pruebas extensas, esta es nuestra opinión: Tanto Jest como Vitest son excelentes herramientas que pueden mejorar significativamente tu productividad. La mejor elección depende de tus necesidades específicas.
Choose Jest if:
You have a large existing Jest test suite, need maximum ecosystem compatibility, or your project doesn't use Vite.
Choose Vitest if:
You're starting a new project, use Vite, want faster test execution, or need native ESM and TypeScript support.
Preguntas frecuentes
Very easy. Vitest is designed to be Jest-compatible. Most tests work with minimal changes — mainly replacing 'jest' with 'vi' in mock calls.
Veredicto final: ¿Cuál deberías elegir?
✨ Elige Jest si
You have a large existing Jest test suite, need maximum ecosystem compatibility, or your project doesn't use Vite.
✨ Elige Vitest si
You're starting a new project, use Vite, want faster test execution, or need native ESM and TypeScript support.