Under The Hood
MSPKExploring what really happens when you write frontend code
| Platform |  | Pricing | Only free issues | Publishes | Daily |
|---|---|---|---|---|---|
| Issues | 46 | Founded | 10 months ago | Last Issue | 9 days ago |
| Active | |||||
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mspk.substack.comLatest Issues
Why typeof null === ‘object’ Is a Bug That Can Never Be Fixed
Open your browser console right now and type this:
typeof null
It returns "object".
It’s wrong. Everyone knows it’s wrong. The people who built JavaScript knew it was wrong. And it will never be fixed. Here’s the full stor...
How import() Changed Frontend Architecture and (almost) Nobody Noticed
We spent years arguing about code splitting. Webpack configs, bundle strategies, route-based splitting, component-level splitting; entire articles written about how to slice your JavaScript so users don’t download what they don’t need.
And...
The structuredClone You Should Have Been Using Instead of JSON Hacks
At some point, every JavaScript developer writes this:
const copy = JSON.parse(JSON.stringify(original));
You know it’s ugly. I know it’s ugly. We all wrote it anyway because it worked — until it didn’t.
The thing is, `JSON.parse(JSON....
Your Service Worker Is Serving Stale Code (And Your Users Are Stuck in a Time Warp)
Progressive Web Apps (PWAs) promised us a beautiful, offline-first future. We were told that by implementing service workers, we could bypass the unpredictable volatility of mobile networks, cache our core application shells locally, and de...
The rem vs px Illusion: How Browsers Actually Scale Typography for Accessibility
Go to any frontend engineering forum, search for typography, and you will find yourself staring into a deep, dogmatic rabbit hole. The battle lines were drawn a decade ago: on one side, you have the pixel purists who want exact, predictable...
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