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Fresh tutorials and deep dives, plus the projects, snippets, interview prep, and tools you reach for every day — all in one place.
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Latest articles
When useState Lies to You (And Why That’s By Design)
useState doesn’t hold values—it holds *promises*. Its “lies” (frozen reads, delayed writes, closure-scoped snapshots) aren’t bugs—they’re deliberate abstractions that uphold React’s consistency contract.
6/22/2026 · 5 min read
Why Your React Dashboard Lags at 50Hz (And What to Do Instead)
Learn why high-frequency telemetry (like drone attitude at 50Hz) crashes React’s render cycle—and how to keep your dashboard smooth by moving state updates *outside* the React reconciliation path.
6/22/2026 · 6 min read
The Prompt Stack: Building a Reusable AI Interface for React Native Teams
How top React Native teams treat prompts as versioned, testable engineering artifacts—complete with governance, CI validation, and onboarding workflows—just like linters or config files.
6/21/2026 · 7 min read
useTransition() for Perceived Performance: Smarter UI Feedback Without Loading Spinners
Learn how React’s `useTransition()` and `isPending` state let you defer non-urgent updates—like data fetches or form submissions—while keeping the UI instantly responsive and visually coherent.
6/21/2026 · 6 min read
Open Source
Open-Source Projects
visx as React’s Missing Primitives for Data Graphics
visx is a collection of low-level, composable React components for building data visualizations—not prebuilt charts, but foundational building blocks like `<Bar />`, `<Line />`, and `<Axis />`, designed to work like native UI primitives.
What Happens When Radix, Floating UI, and MUI Join Forces?
Base UI is an unstyled, accessibility-first React component library built collaboratively by the core teams behind Radix UI, Floating UI, and Material UI — representing a rare convergence of ecosystem primitives, composability philosophy, and WAI-ARIA rigor.
Run state-of-the-art AI models directly in the browser — no backend, no API keys, no latency
transformers.js brings Hugging Face’s vast ecosystem of pretrained ML models to JavaScript environments, enabling zero-server, privacy-preserving, client-side inference for NLP, vision, audio, and multimodal tasks.
Floating UI — A battle-tested, accessible positioning engine for tooltips, popovers, dropdowns, and other floating elements
Floating UI is a lightweight, TypeScript-first library that solves the notoriously hard problem of correctly positioning and interacting with floating UI elements—while guaranteeing visibility, accessibility, and cross-platform flexibility.
tldraw/tldraw — A production-grade, infinitely extensible React SDK for building collaborative whiteboards, diagrams, and AI-augmented canvas apps
tldraw is a TypeScript-first, React-native infinite canvas SDK that eliminates the years-long engineering effort required to build performant, multiplayer, cross-platform drawing and diagramming experiences.
React — A declarative, component-based JavaScript library for building scalable, interactive user interfaces across web and native platforms
React is the industry-standard UI library that enables developers to build fast, predictable, and maintainable front-end applications using reusable components and a declarative programming model.
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React Snippets
import { useState, useEffect, useRef } from 'react';
interface UseIntersectionObserverOptions
extends Partial<IntersectionObserverInit> {
threshold?: number | number[];
rootMargin?: string;
}
Intersection Observer Hook for Lazy Loading and Animations
A lightweight, reusable React hook that triggers callbacks when elements enter or leave the viewport—ideal for lazy-loading images or starting animations.
import { useState, useEffect, useRef } from 'react';
export function FadeIn({ children }: { children: React.ReactNode }) {
const [isVisible, setIsVisible] = useState(false);
const ref = useRef<HTMLDivElement>(null);
useEffect(() => {
const node = ref.current;Fade-in animation with requestAnimationFrame
A performant, CSS-in-JS fade-in animation using useState, useEffect, and requestAnimationFrame for smooth entrance transitions.
import { useState, useCallback, useMemo } from 'react';
interface UseFormOptions<T> {
initialValues: T;
validate?: (values: T) => Partial<Record<keyof T, string>>;
}
interface UseFormReturn<T> {Lightweight useForm hook with validation and dirty tracking
A minimal, self-contained React hook for form state management with validation, dirty tracking, and submission handling—no external dependencies.
import { useState, useEffect, useRef } from 'react';
export function DebouncedSearchInput({
onSearch,
delay = 300,
}: {
onSearch: (query: string) => void;
delay?: number;Debounced search input with useEffect and useRef
A reusable search input that delays API calls until user stops typing for a specified duration.
import { useState, useCallback } from 'react';
function useToggle(initialValue: boolean = false) {
const [value, setValue] = useState<boolean>(initialValue);
const toggle = useCallback(() => {
setValue(prev => !prev);
}, []);Custom useToggle hook with optional initial state
A lightweight, reusable React hook for managing boolean toggle state with optional initial value.
import { useState, useEffect, useRef, useCallback } from 'react';
interface AccessibleModalProps {
isOpen: boolean;
onClose: () => void;
title: string;
children: React.ReactNode;
}Accessible Modal with Focus Trapping and Dismissal
A fully accessible React modal that traps focus, supports ESC key and click-outside dismissal, and announces state changes to screen readers.
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React Interview Questions
- How does React.memo work, and what are its limitations with props containing objects or functions?Medium
- What is the purpose of the 'key' prop, and what are common anti-patterns when assigning keys?Medium
- When would you choose Context API vs. a dedicated state management library like Zustand or Redux Toolkit?Medium
- Describe how React Router v6's data APIs (e.g., useLoaderData, useActionData) differ from prior versions and why they matter for data loading.Medium
- What is the virtual DOM and how does it improve React's performance?Medium
- Explain the rules of Hooks. Why must they be called at the top level and in the same order?Hard
- How does useState work under the hood? What happens when you call it multiple times in one component?Hard
- What are the key differences between useMemo and useCallback, and when would you use each?Medium
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Tech Comparisons
- ⚖Vite vs Webpack: Bundling Speed and DX Versus Configurability and Ecosystem ReachBuild Tools
- ⚖CSS Modules vs Emotion: Scoped Styling with Native Tooling vs Dynamic, Theme-Aware StylesStyling
- ⚖TanStack Router vs React Router: Type-Safe, Compiler-Powered Routing vs Declarative, Community-Established PatternsRouting
- ⚖Zustand vs Redux: Simplicity and Bundle Size Versus Ecosystem Maturity and Middleware SupportState Management
Free tools
AI helpers & utilities
View all →Hook Generator
Describe it in plain English, get a runnable custom hook.
Code Explainer
Paste React code and get a clear, concise walkthrough.
Error Decoder
Paste a React error and get the cause, the fix, and how to prevent it.
Code Converter
Modernize old React code — add TypeScript or convert classes to functions.
A complete toolkit for React developers
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