API surface challenges on a shared platform
War stories from a shared platform library, Hyrum's Law, and the politics of scaling a core npm package in a big organization.
Read articleWelcome, I'm Krzysztof
Frontend engineer building internal tooling for dev teams
Writing about frontend architecture, developer experience, and making technical decisions, that actually serve the business.
How we migrated 30+ apps from Webpack to RSBuild by introducing the internal scripts package
When you have dozens of applications, independent teams, and module federation requirements, migration isn't just a technical challenge - it's an organizational one. This is how we used a scripts package to migrate from Webpack to RSBuild without coordinating developers
Read articleDesign System Pitfalls: Lessons from Integrating at Scale
In large organizations, design systems promise consistency and lower cost-but they often fall into predictable traps. Here’s what to watch and measure.
Read articleVitest doctor cut our CI test time from 263s to 115s
Vitest 5 added a command that measures your suite under alternative configs and tells you which one is fastest. On a 615-file suite it took CI from 263s to 115s
Read moreDetect hanging async operations in Vitest
Ever had tests pass locally but randomly fail in CI? A forgotten setInterval or an unclosed stream might be the culprit
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