#vitest articles | Hashnode

Mmehdimodern-web-dev.hashnode.dev18h ago · 6 min read

Modernizing Ionic 8 & Angular 22: Moving from Karma, Zone.js & ESLint v8 to Vitest, Zoneless & Flat Config

[!NOTE]Target Audience: Ionic & Angular developers looking to modernize starter boilerplate, boost unit test speed by 5x, adopt pure Zoneless change detection, and upgrade to ESLint v9 Flat Config.

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JLJeremy Longshorejeremylongshore.hashnode.devJul 1 · 6 min read

git-with-intent Vitest 4 Migration Pain and IRSB Governance with 104 Moloch Tests

Eighteen commits across three repos. git-with-intent fought through a Vitest 4 migration that broke CI seven different ways. IRSB shipped v1.4.0 with governance contracts and a 104-test Moloch DAO sui

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DNDavid Nguyeneplus.devJun 5 · 3 min read

VoidZero Joins Cloudflare: Vite Stays Open, but Gains Bigger Backing

Cloudflare has announced that VoidZero is joining Cloudflare. This is a notable update for the JavaScript ecosystem, as VoidZero is the company behind several important developer tools, including Vite

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TPTushar Patilblog.techtush.inMay 13 · 15 min read

📦 Build and Publish a Reusable TypeScript MCP Client SDK

This is Part 8 of the AI Engineering with TypeScript series. Prerequisites: Part 1 · Part 2 · Part 3 · Part 4 · Part 5 · Part 6 · Part 7 Stack: Node.js 20+ · TypeScript 5.x · @modelcontextprotocol/sdk

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Rrecca0120recca0120.hashnode.devMay 2 · 3 min read

vitest-fail-on-console: Stop Ignoring console.error in Your Tests

Originally published at recca0120.github.io All tests pass, but the terminal is full of red console.error output. This is common and easy to ignore — the tests passed, after all. But those errors don't appear out of nowhere. Something went wrong; nob...

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Rrecca0120recca0120.hashnode.devApr 28 · 6 min read

Testing a Filesystem Service with memfs + FakeWatchService: No Disk Required

Originally published at recca0120.github.io How do you test a Node.js service that operates on the filesystem? The obvious approach is to create real files under /tmp, run the tests, then clean up. But that comes with problems: slow I/O, inconsistent...

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Rrecca0120recca0120.hashnode.devApr 19 · 6 min read

Shared HTTP Mocks Across a Monorepo: When Fakes Aren''t the Right Tool

Originally published at recca0120.github.io The previous posts covered [DI + Fake + in-memory]({{< ref "/post/di-fake-in-memory-testing" >}}) and [sharing Fakes across a monorepo]({{< ref "/post/monorepo-shared-fake-testing" >}}). That approach has o...

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Rrecca0120recca0120.hashnode.devApr 19 · 7 min read

Shared Fakes Across a Monorepo: One Test Double from Frontend to Backend

Originally published at recca0120.github.io The previous post covered [DI + Fake + in-memory basics]({{< ref "/post/di-fake-in-memory-testing" >}}). This one takes it further, into a scenario most testing tutorials ignore: how frontend, backend, and ...

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Rrecca0120recca0120.hashnode.devApr 19 · 6 min read

DI + Fake + in-memory: Writing Frontend Tests That Survive Refactors

Originally published at recca0120.github.io The most common testing pattern I see looks like this: test('saves user data', () => { const mockStorage = { set: vi.fn(), get: vi.fn().mockReturnValue(null), }; const service = new UserServic...

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MYMuhammad Yafi Alhakimyafi.hashnode.devApr 7 · 2 min read

Testing: The "Quality Contract"

Coming from a background of Jest, Vitest, or Mocha, you'll find Rust's built-in testing suite incredibly refreshing. No extra dependencies are needed for basic unit testing! Think of Rust Testing as a Quality Contract. By writing tests, you are "Sign...

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Trending tags this week

Modernizing Ionic 8 & Angular 22: Moving from Karma, Zone.js & ESLint v8 to Vitest, Zoneless & Flat Config

git-with-intent Vitest 4 Migration Pain and IRSB Governance with 104 Moloch Tests

VoidZero Joins Cloudflare: Vite Stays Open, but Gains Bigger Backing

📦 Build and Publish a Reusable TypeScript MCP Client SDK

vitest-fail-on-console: Stop Ignoring console.error in Your Tests

Testing a Filesystem Service with memfs + FakeWatchService: No Disk Required

Shared HTTP Mocks Across a Monorepo: When Fakes Aren''t the Right Tool

Shared Fakes Across a Monorepo: One Test Double from Frontend to Backend

DI + Fake + in-memory: Writing Frontend Tests That Survive Refactors

Testing: The "Quality Contract"

#vitest

Search Hashnode

#vitest

Explore Hashnode

Trending tags this week

Modernizing Ionic 8 & Angular 22: Moving from Karma, Zone.js & ESLint v8 to Vitest, Zoneless & Flat Config

git-with-intent Vitest 4 Migration Pain and IRSB Governance with 104 Moloch Tests

VoidZero Joins Cloudflare: Vite Stays Open, but Gains Bigger Backing

📦 Build and Publish a Reusable TypeScript MCP Client SDK

vitest-fail-on-console: Stop Ignoring console.error in Your Tests

Testing a Filesystem Service with memfs + FakeWatchService: No Disk Required

Shared HTTP Mocks Across a Monorepo: When Fakes Aren''t the Right Tool

Shared Fakes Across a Monorepo: One Test Double from Frontend to Backend

DI + Fake + in-memory: Writing Frontend Tests That Survive Refactors

Testing: The "Quality Contract"