vitest
@vitest_dev
A next generation testing framework powered by @vite_js ⚡️ Mastodon: @[email protected] Waiting for you at https://bsky.app/profile/vitest.dev 🦋
We're going to be mainly active at @bluesky from now on. Follow us there for the latest @vitest_dev updates 👋

With Storybook 9, your stories can be tests. But how do you know that you’re testing the right things? For that, we built @vitest_dev's test coverage into Storybook Test. Click on the coverage summary in the test widget to open an interactive coverage report.
Storybook 9 is here! ▶️ Interaction tests ♿ Accessibility tests 👁️ Visual tests 🛡️ Coverage reports 🚥 Test widget 🪶 48% Leaner ✍️ Story generation 🏷️ Tag-based organization 🌐 Story globals 🏗️ Major updates for Svelte, Next.js, React Native, and more! Let’s dive in!
The next talk from Svelte Summit Spring 2025 by @DrReinhold is also related to testing — Strike the Perfect Balance: Component Testing with Storybook, Svelte, and Vitest. youtu.be/mdyRQDDp28s
In today's released talk from Svelte Summit Spring 2025 Dominik G talks extensively about testing your Svelte applications with Vitest and Playwright — Testing, 1 2 3 4. youtube.com/watch?v=ljmUuh…
🎙️ Webinar tomorrow – go live with the maintainers of Vitest + Storybook to learn how we built Storybook Test — a new workflow to run interaction, visual, and a11y tests in a real browser, with instant feedback, right inside Storybook. 👇 Register below
.@vitest_dev showcased in Codex’s demo screenshots 🙌
We’re launching a research preview of Codex: a cloud-based software engineering agent that can work on many tasks in parallel. Rolling out to Pro, Enterprise, and Team users in ChatGPT starting today. chatgpt.com/codex
🔥 Experimental vitest support coming to Angular in a couple of weeks with support for: ‣ Watch mode ‣ Browser testing To try it out: ‣ npm i vitest jsdom --save-dev ‣ Update your angular.json ‣ Add a couple of imports
Storybook Test It’s a batteries-included combo of the best UI development and testing tools: Storybook, @vitest_dev's browser mode, and @playwrightweb. Run interaction, accessibility, and visual tests with a click and get real-time feedback inside your Storybook.
Vitest 3.1.0 is out! ⚡ Apart from performance improvements and fixes, this release expands your test setup flexibility with new options. Check out the release notes here. github.com/vitest-dev/vit…
Oxc -> vitest * CI build time reduced from 1 min 30 sec to 27 sec * local pnpm build time went from 30s to 11s * total memory reduced from 8GB to 3GB github.com/vitest-dev/vit…
In 2025, we’re doubling down on our support to Open Source. We’re thrilled to announce the Bolt 100K Open Source Fund:
There's literally no tech I'm more bullish on than Vitest. Even TypeScript. If you're using some other test runner, you're making your job harder for no reason.
@kettanaito Here comes @vitest_dev support by @startearly_ai! Thomas Dohmke, CEO of GitHub, says: “50% of all code produced by Copilot users is now AI-generated.” But… who’s testing this code? That’s where EarlyAI comes in - an AI Agent for test code. Today, we’re adding…
I finally achieved the perfect test setup for @remix_run! Runs: - @vitest_dev browser mode for browser & generic tests - Runs server and generic tests in a node environment Meaning: - Generic code works everywhere - Specific code works in correct environments