Wojciech Maj
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wojtekmaj.pl
Wojciech Maj
@wojtekmaj.pl
490 followers 170 following 580 posts
Dad, husband, TypeScript developer.
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wojtekmaj.pl
Surface Laptop 7, Snapdragon X Elite, 16 GB
November 20, 2025 at 3:56 PM
wojtekmaj.pl
MBP 14" 2021, M1 Max, 64 GB
November 20, 2025 at 2:28 PM
wojtekmaj.pl
❌ If you unit-test a React 19 app, there’s a good chance a chunk of your CI time is being wasted on… 😴 setTimeout.
Wait, what? Yes!

React 19 introduced a minimum delay for showing a Suspense fallback, and hardcoded (!) it to 300ms.
Just 3 tests can waste almost 1 second on absolutely nothing!
Screenshot of two terminal test runs. In the first run, each React component test takes about 309–331 ms, and the test file finishes in 2.93 s. In the second run, run with THROTTLE_PLUGIN=1, the same tests take about 54–75 ms each, and the file completes in 1.34 s.
November 17, 2025 at 2:15 PM
wojtekmaj.pl
Ah yes one of these days
A screenshot of GitHub Desktop dialog window "Create a Branch". In "Name" field "wmaj/fuuuuuuck" was provided, and that field has an error message next to it: "A branch named wmaj/fuuuuuuck" already exists."
October 30, 2025 at 6:58 AM
wojtekmaj.pl
I'm exploring React Compiler to understand it better and minimize its impact on bundle size. 🕵️‍♀️ How about 100 bytes saved by simply declaring a variable? That can surely add up!
// 725 bytes after compilation import { useState } from 'react'; export default function ColorProvider({ children }) { const [color, setColor] = useState('red'); function changeColor() { setColor('blue'); } return ( <Button value={{ changeColor }}> {children} </Button> ); } // 625 bytes after compilation import { useState } from 'react'; export default function ColorProvider({ children }) { const [color, setColor] = useState('red'); function changeColor() { setColor('blue'); } const value = { changeColor }; return ( <Button value={value}> {children} </Button> ); }
October 28, 2025 at 8:44 PM
wojtekmaj.pl
That just sounds like wanting Preact with extra steps
October 2, 2025 at 7:09 PM
wojtekmaj.pl
React 19.2 is 12% bigger than 19.1.
And 60% bigger than 18.3.
And 136% bigger than 17.0.

I'm so tired of this.
October 2, 2025 at 7:47 AM
wojtekmaj.pl
OXC team be like
September 24, 2025 at 1:00 PM
wojtekmaj.pl
What's stopping you from coding like this?
A Renault dashboard featuring Visual Studio Code on the main multimedia screen
September 20, 2025 at 6:46 PM
wojtekmaj.pl
Script goes brrr
A screenshot showing multiple lines of console output, all like: "✓ Deleted Actions secret NPM_TOKEN from wojtekmaj/<repo name>"
September 19, 2025 at 11:33 AM
wojtekmaj.pl
> apart from still missing native ESM support

Ah yes
September 3, 2025 at 8:29 AM
wojtekmaj.pl
🚨 BREAKING: @vite.dev downloads are DOWN over 15% since last week. 📉
Is this the beginning of the end for the most popular bundler? 🤔
npm trends chart showing vite steadily growing over the last 2 years only to swiftly jump from ~30M dls/week to ~150M dls/week, followed by a 15% decline to around ~130M dls/week.
September 3, 2025 at 8:25 AM
wojtekmaj.pl
I'm having *such* a hard time believing this chart. You people live like this?
npm trends chart screenshot showing jest package steadily growing in dls/week over the last 5 years, and vitest package increasingly growing, yet reaching about a half of jest's dls/week.
September 3, 2025 at 8:18 AM
wojtekmaj.pl
September 2, 2025 at 12:17 PM
wojtekmaj.pl
Yeah it's a joy but THIS is THE SHIT
You have a new sponsor! @piecioshka is now sponsoring you for $10.00 one time! What's next? Getting paid
August 29, 2025 at 10:09 PM
wojtekmaj.pl
You don't need an ESLint configuration file if you remove ESLint
August 26, 2025 at 5:31 PM
wojtekmaj.pl
Missed some!
August 26, 2025 at 5:26 PM
wojtekmaj.pl
POV: You're a GitHub Copilot Agent running @biomejs.dev for the first time. 🤣
A screenshot from GitHub Copilot Agent session where AI, after linting the project, comments: "That was suspiciously fast, but I'll trust the files were actually linted. Let me check the test status and understand the structure of the pages that need the reordering feature:"
August 22, 2025 at 1:11 PM
wojtekmaj.pl
Every programmer's favorite store
DS Store
August 15, 2025 at 3:57 PM
wojtekmaj.pl
Savage! Although I've battle-tested every styling solution out there and liked tailwind the least. They'll have at least one person using that feature 😁
A remake of the popular image of a bird screaming "Get that thing out of my face!" before biting a biscuit, with the final image replaced with a vomiting bird
August 14, 2025 at 6:17 AM
wojtekmaj.pl
HUGE update to @testing-library/jest-dom - v6.7.0 drops dependency on chalk and lodash, resulting in almost 3x install size reduction!
August 13, 2025 at 8:23 PM
wojtekmaj.pl
PR to multer just got merged! 🥳 The next version of multer is going to be 61 KB lighter! 🪶

github.com/expressjs/mu...
August 8, 2025 at 11:47 AM
wojtekmaj.pl
AGI achieved externally
A screenshot from ChatGPT using ChatGPT 5. - How many Rs are in "strawberry"? - There are 3 "R"s in "strawberry". - And how many in "blueberry"? - There are 2 "R"s in "blueberry".
August 8, 2025 at 10:31 AM
wojtekmaj.pl
Migrated my last dual CJS/ESM packages to pure ESM today. I'm officially CJS free, for good.

Setup’s simpler, builds are faster, packages are lighter. Everyone wins 🥰
A chart from Packagephobia showing a steep (roughly 33%) decrease in package size after major release.
August 5, 2025 at 3:49 PM
wojtekmaj.pl
. @jarredsumner.com in Bun v1.0 and Bun v1.2 announcement videos 💀
Hairy Jarred Sumner Bald Jarred Sumner
July 30, 2025 at 3:22 PM