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Wrap Your Component in Battle Armor with React Testing Library and TypeScript
Write tests that survive refactors
Learn how to combine React Testing Library with TypeScript to write robust component tests that catch real bugs and stay resilient through code changes.
The Pieces That Make Up Browser Caching
Understanding the levers that control speed
A practical breakdown of HTTP caching headers—Cache-Control, ETags, and Vary—and how they work together to make the web fast.
A Light Introduction to Web Components
Native browser components without a framework
Web Components let you build reusable UI elements that work in any framework—or none at all. Here's how the three core APIs fit together.
Adding GraphQL to Your Skill List
Query exactly what you need, nothing more
GraphQL solves the over-fetching and under-fetching problems of REST by letting clients request exactly the data shape they need. Here's how to get started.
Avoiding the Global Scope with the Revealing Module Pattern
Keep your variables where they belong
The Revealing Module Pattern gives you private state and a clean public API in plain JavaScript—no build tools or classes required.
The Power of the Map Method
Transform arrays without mutating them
Array.map() is one of JavaScript's most useful methods. Learn how it works, when to use it, and how it pairs with other array methods to write clean, declarative code.