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Vitest @vitest_dev

Testing framework powered by @vite_js ⚡️, brought to you by @voidzerodev | Bluesky: https://t.co/vS4yqK4RGr 🦋 vitest.dev Bluesky Joined December 2021
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Vitest retweeted
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VoidZero @voidzerodev

3 days ago

🚀 @vitest_dev 5.0.1 is out with more than 18 fixes Among them: `define` values are no longer double-quoted in browser mode! It also includes a focused Trace View layout which is used by the Vitest VS Code extension. Time to update 👀 github.com/vitest-dev/vit…

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VoidZero @voidzerodev

4 months ago

VoidZero is joining Cloudflare. Our mission stays the same: to make JavaScript developers more productive than ever before. Vite, Vitest, Rolldown, Oxc, and Vite+ remain MIT-licensed. Evan and the VoidZero team will continue leading them. Cloudflare shares our commitment to open source. Together, we can keep investing in the tooling developers rely on every day, while bringing the Vite ecosystem and Cloudflare’s platform even closer together.

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Vitest @vitest_dev

4 months ago

github.com/vitest-dev/vit…

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Vitest @vitest_dev

4 months ago

We've published a Browser Mode security advisory. CDP-capable providers like Playwright Chromium with the browser API exposed to the network allowed attackers to run code on the host. Update vitest/browser to 5.0.0-beta.4, 4.1.8, or 3.2.6. Vite+ users: Upgrade to 0.1.24

Vitest retweeted
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Chromatic @chromaticcom

4 months ago

We’re launching early access for Vitest visual testing with Chromatic! ⚡️ Built with @vitest_dev core maintainer Ari Perkkio, Chromatic adds visual testing to the browser tests you already write. 🧵 (1/4)

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Vitest @vitest_dev

4 months ago

github.com/vitest-dev/vit…

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Vitest @vitest_dev

4 months ago

🚨 We are publishing Vitest 4.1.6 and Vitest 5.0.0-beta.3 to resolve recent vulnerabilities: - `--api` and `--ui` exposed arbitrary files to the network - `--api` allowed arbitrary execution - `?otelCarrier` XSS More information on our GitHub security page

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Vitest @vitest_dev

6 months ago

Read our announcement post for all the details vitest.dev/blog/vitest-4-…

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Vitest @vitest_dev

6 months ago

Vitest 4.1 is out! 🚀 ✅ Vite 8 support from day 1 🏷️ Test tags to organize, filter & apply shared options 🪝 New hooks for easier tracing, transactions and AsyncLocalStorage 🔍 Async leak detection 🤖 Agent reporter to reduce token usage And much more!

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Vitest @vitest_dev

7 months ago

@mhsnook @tannerlinsley @ashishxcode @tan_stack

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Vitest @vitest_dev

7 months ago

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Boris Cherny @bcherny

7 months ago

In the next version of Claude Code.. We're introducing two new Skills: /simplify and /batch. I have been using both daily, and am excited to share them with everyone. Combined, these kills automate much of the work it used to take to (1) shepherd a pull request to production

Vitest retweeted
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VoidZero @voidzerodev

7 months ago

Flaky tests and memory leaks are the worst. @vitest_dev now has a --detect-async-leaks flag that catches uncleared intervals, lingering servers, and other async operations leaking across your tests. ⚠️ Don't run it on every run though. Use it to audit your test suite, then clean things up. Available in the latest 4.1 beta. Big shout out to Ari from the Vitest team for landing this PR! 🔥

Vitest retweeted
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VoidZero @voidzerodev

7 months ago

Tests. Vitest's browser mode is stable since Vitest 4.0. Now you can be sure that your tests pass in an *actual* browser environment. vitest.dev/guide/browser/

Vitest retweeted
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VoidZero @voidzerodev

8 months ago

✨ What's New in ViteLand: January 2026 Recap ◆ Unified redesign across all VoidZero sites ◆ @vite_js crossed 3 billion npm downloads ◆ @rolldown_rs reached RC status ◆ Lazy Barrel Optimization landed in Rolldown ◆ Oxfmt hit 100% Prettier conformance ◆ Oxlint gets a dynamic .ts config ◆ ...and much more 👀 Full recap below!

Vitest retweeted
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VoidZero @voidzerodev

8 months ago

The first beta for @vitest_dev 4.1 is out! 🧪 What's new: ◆ Chai-style spy assertions (`toHaveBeenCalled`, etc.) ◆ `userEvent.wheel()` for browser mode ◆ Enhanced retry options for flaky tests ◆ Disposable returned from `doMock()` ◆ Respecting coverage ignore start/stop hints ◆ and more 👀 Try now by installing vitest@beta

Vitest retweeted
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VoidZero @voidzerodev

8 months ago

New Year. New Look. Same Mission. Make JavaScript developers more productive than ever before

Vitest retweeted
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VoidZero @voidzerodev

10 months ago

Want to speed up subsequent @vitest_dev runs? Then try out the new experimental file-system based cache ✨ ⋄ Caches transformed modules ⋄ Does *not* work with browser mode yet ⋄ Can be manually cleared via `vitest --clearCache` More in the docs vitest.dev/config/experim…

Vitest retweeted
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Chris Cook @zirkelc_

a year ago

I started a proof of concept to integrate the standard schema natively into @vitest_dev It's currently being discussed integrating this directly into `toEqual()`, creating a new custom matcher like `toEqualSchema()` or an asymmetric matcher like `schemaMatching()`

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Chris Cook @zirkelc_

a year ago

What if we can turn `expect(url).toMatch(/^(?!\\.)(?!.*\\.\\.)([A-Za-z0-9_'+\\-\\.]*)[A-Za-z0-9_+-]@([A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$/)` into `expect(url).toMatchSchema(z.url())`? I created a custom matcher for @vitest_dev to validate data against any schema

Vitest retweeted
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VoidZero @voidzerodev

a year ago

What's new in ViteLand? Our August 2025 recap is out 👣 Big steps for Oxlint: Type-aware linting preview & custom JS plugins roadmap 🖼️ @vitest_dev has visual regression support in beta ⏩ Native plugins enabled by default in rolldown-vite 🤌 Smaller bundles due to @rolldown_rs and Oxc 👀 and more

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