Vitest

A Vite-native testing framework compatible with Jest for fast and integrated testing of JavaScript and TypeScript projects.

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Overview

Vitest is a next-generation testing framework built on Vite, offering fast, lightweight, and integrated testing with Jest compatibility. It supports TypeScript, JSX, ESM, component testing, and smart watch mode for efficient test runs.

Updated Jun 29, 2026.

Key Features

Vite Native Integration

Reuses Vite's config, transformers, resolvers, and plugins to ensure consistent setup between app and tests.

Smart Watch Mode

Instant test reruns triggered only by related changes, similar to Vite's Hot Module Replacement (HMR).

Out-of-the-Box TypeScript and JSX Support

Supports ES modules, TypeScript, and JSX natively powered by Oxc without additional configuration.

Component Testing Support

Supports component testing for frameworks like Vue, React, Svelte, Lit, and Marko.

Concurrent and Filtered Testing

Allows running tests concurrently and filtering tests to speed up development feedback loops.

Pros

Deep integration with Vite configuration and plugins for seamless testing experience.
Jest compatibility simplifies migration and usage for existing Jest users.
Fast and lightweight with smart watch mode reducing test run times.
Supports multiple frontend frameworks for component testing.
Free and open source with active community support.

Cons

Requires Vite >= 6.0.0 and Node >= 20.0.0, limiting compatibility with older environments.
DOM mocking environments like happy-dom or jsdom must be installed separately.
Concurrent testing requires careful use of local test context for snapshots and assertions.
Limited official support for non-Vite projects, though possible to use.
Some experimental features like benchmarking and type testing may not be stable.

Pricing

Vitest pricing plans
Plan	Price	Highlights
Free	$0	Full access to all Vitest features Open source and community supported No usage limits

Pricing is collected from the official Vitest website and may change. Always confirm with the vendor.

Developer features

Jest Compatibility
Supports Jest-compatible APIs including expect, snapshot testing, coverage, and mocking for easy migration.
Code Coverage
Provides native code coverage via v8 and instrumented coverage via Istanbul.
Mocking and DOM Environment
Includes Jest-compatible mocking APIs and supports happy-dom or jsdom for DOM and browser API mocking.

Frequently Asked Questions

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Community reviews (0)

Most recent

No reviews yet. Be the first to share your experience.

Ratings & reviews

No reviews yet. Be the first to share your experience.

Share your experience

Help others decide, your insights matter

Community reviews (0)

Most recent

No reviews yet. Be the first to share your experience.

Key Features

Vite Native Integration

Reuses Vite's config, transformers, resolvers, and plugins to ensure consistent setup between app and tests.

Smart Watch Mode

Instant test reruns triggered only by related changes, similar to Vite's Hot Module Replacement (HMR).

Out-of-the-Box TypeScript and JSX Support

Supports ES modules, TypeScript, and JSX natively powered by Oxc without additional configuration.

Component Testing Support

Supports component testing for frameworks like Vue, React, Svelte, Lit, and Marko.

Concurrent and Filtered Testing

Allows running tests concurrently and filtering tests to speed up development feedback loops.

Pros

Deep integration with Vite configuration and plugins for seamless testing experience.
Jest compatibility simplifies migration and usage for existing Jest users.
Fast and lightweight with smart watch mode reducing test run times.
Supports multiple frontend frameworks for component testing.
Free and open source with active community support.

Cons

Requires Vite >= 6.0.0 and Node >= 20.0.0, limiting compatibility with older environments.
DOM mocking environments like happy-dom or jsdom must be installed separately.
Concurrent testing requires careful use of local test context for snapshots and assertions.
Limited official support for non-Vite projects, though possible to use.
Some experimental features like benchmarking and type testing may not be stable.

Pricing

Vitest pricing plans
Plan	Price	Highlights
Free	$0	Full access to all Vitest features Open source and community supported No usage limits

Pricing is collected from the official Vitest website and may change. Always confirm with the vendor.

Developer features

Jest Compatibility
Supports Jest-compatible APIs including expect, snapshot testing, coverage, and mocking for easy migration.
Code Coverage
Provides native code coverage via v8 and instrumented coverage via Istanbul.
Mocking and DOM Environment
Includes Jest-compatible mocking APIs and supports happy-dom or jsdom for DOM and browser API mocking.

Vitest

Overview

Key Features

Vite Native Integration

Smart Watch Mode

Out-of-the-Box TypeScript and JSX Support

Component Testing Support

Concurrent and Filtered Testing

Pros

Cons

Pricing

Developer features

Jest Compatibility

Code Coverage

Mocking and DOM Environment

Featured Video

Frequently Asked Questions

Ratings & reviews

Ratings & reviews

Community reviews (0)

Ratings & reviews

Community reviews (0)

Key Features

Vite Native Integration

Smart Watch Mode

Out-of-the-Box TypeScript and JSX Support

Component Testing Support

Concurrent and Filtered Testing

Pros

Cons

Pricing

Developer features

Jest Compatibility

Code Coverage

Mocking and DOM Environment

Featured Video

Frequently Asked Questions

More in Software Development

Ratings & reviews

Community reviews (0)

More in Software Development