Hello 👋 Welcome to my portfolio!

I'm Krzysztof Sordyl

Frontend developer passionate about React.js ecosystem, focused on creating modern web apps.

Based in Bielsko-Biała, Poland 🏔️

2025-09-07blog post

Modern Webpack Boilerplate: Part 4: Migration to RsBuild

In Part 4 of Modern Webpack Boilerplate series, we will migrate the boilerplate to a more modern tool: RsBuild.

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2025-08-23blog post

Design 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.

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2025-03-16blog post

Measure package sizes effectively

A small guide to identifying npm packages bundle size. You will learn which tools are providing better insights than Bundlephobia.

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2024-12-22dev-bite

Vitest timing breakdown

Breakdown of each step of duration printed out after running the Vitest tests. Including some hints on how to improve each of the metrics

2024-08-03dev-bite

How to Measure ESLint Execution Time

Find out how to check which ESLint rules takes a lot of time to scan the project