shdev.blog

Making Truly Responsive with Container Queries

Learn how to solve responsive design problems that were difficult to handle with media queries by using container queries. Let’s create truly reusable components by applying styles based on the size of the parent element, not the viewport.

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CSS

January 13, 2026

You May or May Not Be Able to Draw 0.5px (feat. DPR)

Why a 0.5px border appears on some devices but not on others. Understanding Device Pixel Ratio (DPR) makes it clear.

CSS

11/29/2025

Why I Removed index.ts (Barrel) Files

I used barrel files to make imports look neat. Why they caused issues, what changed after removing them, and the cases where I still keep them.

TypeScriptJavaScriptRefactoring

11/14/2025

Troubleshooting a Memory Leak Caused by THREE.Cache.enabled

I looked into how THREE.Cache, enabled to optimize GLTFLoader performance, ended up causing a memory leak in a dynamic URL environment.

Three.js

08/25/2025

Understanding How Zustand Works (with Closure)

By analyzing Zustand’s source code, we uncover the core principles of state management powered by closures—and the secrets behind a powerful state library implemented in roughly 100 lines.

JavaScriptZustand

08/08/2025

Diving Deep into JWT

I revisited the widely used authentication method JWT (JSON Web Token) from its background to structure and operating principles, reconsidering why and how it should be used.

WebSecurity

07/29/2025