Guides · blessbycode
your path to mastery starts here.
Structured, multi-part guides with a real destination. Every step earns the next — no gaps, no hand-waving, no "left as an exercise."
React 19 — The Guide
Everything you need to know about new primitives, the Actions model, Server Components, the compiler, form handling, optimistic updates, and the complete architectural shift of React version 19.
JSX in React 19 — The Complete Reference
Everything you need to know about JSX — how it compiles, every expression pattern, conditional rendering, lists, fragments, refs, context, error boundaries, and every React 19 addition.
NgRx: The Complete Professional Guide
Master state management in Angular 20 with NgRx — covering every concept, pattern, and real-world use case from first principles to production architecture.
Angular 20 — From Beginning and Beyond
Everything you need to know about Angular 20: every new feature, every breaking change, every API compared against its predecessor.
JavaScript Event Loop: The Scariest Merry-Go-Round
If you've ever wondered why `setTimeout(fn, 0)` doesn't always run immediately, why `async/await` feels like magic, or why JavaScript can handle thousands of operations without freezing — this article answers all of it. By the end, you'll have a mental model of the event loop so solid you can predict exactly how any piece of JavaScript will execute.