Vite+ puts dev, lint, format, type checking, commit hooks and package management behind one CLI and one config file. Here is what it took to add in-browser tests without breaking that, linting and cov...

HTMX apps are refreshingly simple: the server returns HTML fragments, and HTMX swaps them into the...

My agent instructions said "ALWAYS await" three times, and the agent still forgot. What fixed it wasn't a better prompt: it was moving each rule into a type check, a linter or a structured report.

Models know React and Jest by heart. They don't know your internal SDK, your design system or your niche open source library, and they fill the gaps with what they do know. Here's a toolkit to fix tha...

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Senior Software Engineer focused on engineering quality, testing strategy and AI-assisted development. Creator of TWD.

42M monthly visitors, 400 routes and 850K lines of code moved from Next.js on Vercel to TanStack Start on Lovable—route by route, mostly by agents, with one 11-minute incident along the way.

There are developers who make a team faster. There are developers who make a team better. And there...

An agent opened a pull request on my repo last week. Eleven files changed, three new tests, all...

You change one line of CSS. A flex-direction, a max-width, a padding on a shared card...

A Vue component's job is to produce DOM in a browser. Most component tests ask it to do that...

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Microfrontends split a frontend into apps that build, deploy and version on their own. One team ships...

Open Cells is an open-source framework from BBVA for building web apps out of Web Components. It...

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HTMX apps are refreshingly simple: the server returns HTML fragments, and HTMX swaps them into the...

Create React App was officially deprecated in February 2025. The apps built with it didn't disappear....

A payment request showed up in production logs with country: "ROW" at the top level and...

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The talk will be in Spanish, unless someone doesn’t speak the language, in which case we’ll switch to English. La IA solo amplifica lo que tu equipo ya hace.…

Automated accessibility testing usually means one thing: point a scanner at the page, let it check...

It has been a while, so this is an extra-large update. Express got a full redesign and a new brand, the Node.js Collaborators Summit confronted an AI-driven flood of vulnerability reports, and a heavy...

Testing components in a simulated DOM (jsdom, happy-dom) has always felt like a compromise. What we...

You just built a Nuxt todo page. It loads from a Nitro route, adds a todo, deletes one, and it works...

Frontend testing ecosystem. Write tests in your real browser, let the AI agent iterate, validate every mock against the real API. Testing isn't a phase — it's how you build.