Founder of Wingo UI
Serban Rusu is the founder of Wingo UI. He builds the component library, its CLI and its MCP server, and writes about React interfaces that work well on phones and with AI coding agents.
The 100vh mobile bug explained: why h-screen hides your bottom bar, when to use dvh, svh or lvh in Tailwind, and how to keep a bar above the keyboard.
14 shadcn alternatives checked in October 2026: free and paid UI libraries by license, price, mobile behavior and MCP support, with a pick per use case.
AGENTS.md vs CLAUDE.md vs Cursor rules for React and Tailwind: which agent reads which file in October 2026, and a rules file that keeps agents on your tokens.
The best React component library for mobile web apps in 2026: 9 libraries checked at 390px for bottom sheets, touch targets, safe areas and gestures.
Claude Code shadcn setup, tested on shadcn 4.21.4: the MCP server, the skill, a second registry in its own folder, a CLAUDE.md block and prompts that work.
How a component library MCP server, rules files, llms.txt and a registry get Claude Code, Cursor and Codex to install real components instead of guessing.
Fix dnd kit mobile drag: a TouchSensor long press that still lets the page scroll, touch-action per element, the iOS Safari resize cancel and a tap path.
Update shadcn components without losing edits: what shadcn diff and add --diff show, why a 2-way diff hides whose change is whose, and how a 3-way merge works.
IBAN validation JavaScript that catches typos: mod 97 in TypeScript, why a regex is not enough, a React field that formats as you type and Romanian banks.
Minimum touch target size per WCAG 2.2 (24 and 44px), iOS (44pt) and Android (48dp), and how to get 44px taps in React and Tailwind without desktop bloat.
Mobile-first React components, rule by rule: bottom sheets instead of popovers, 44px touch targets, safe areas, dvh, keyboard-aware bars and tables as cards.
A nextjs admin dashboard tutorial for the App Router: app shell, KPI home, server-side data tables, settings and team pages, each one usable on a phone.
React 19 forwardRef migration in TypeScript: take ref as a regular prop, type it with ComponentProps, merge refs with cleanups and keep asChild working.
How a production React AI chat UI handles streaming, auto-scroll, IME input and the phone keyboard, part by part, with code for the Next.js App Router.
Build a React bottom navigation bar in Next.js: 3 to 5 link tabs, safe areas, badges screen readers announce, hide on scroll, and when a sidebar fits better.
Build a React bottom sheet for the web on vaul: snap points, drag to dismiss, nested sheets, the on-screen keyboard and the home indicator, with working code.
Build a React command palette that binds Cmd+K on a Mac and Ctrl+K elsewhere, with nested pages, async results, recents and a full-height sheet on phones.
React form components that share one anatomy (label, hint, error, counter), plug into react-hook-form and zod, and behave right on a phone, with full code.
How to build a React OTP input that takes paste and SMS autofill, why autocomplete one-time-code fails silently, and how to add zod checks and a resend timer.
Build a React pull to refresh for a PWA: overscroll-behavior, rubberband resistance, iOS spokes or a Material ring, a haptic tick and a refresh button.
Build a React PWA install prompt in Next.js: catch beforeinstallprompt in Chrome and Edge, show Add to Home Screen steps on iPhone, and know when not to ask.
Why a React use mobile hook is false on the server, when CSS breakpoints beat it, and an SSR-safe useSyncExternalStore version with no hydration mismatch.
Build a Romanian CNP validator in TypeScript: the weighted check digit, real birth dates, the new county code 70, a zod rule, a React field and safe storage.
Romanian CUI validation in TypeScript: the 753217532 check digit step by step, the RO prefix, a zod rule, a React field and a company lookup at ANAF.
Build a shadcn responsive dialog once: a centered card above 768px, a draggable bottom sheet below it, one copy of the content and no hydration flash.
Need a Sonner alternative? react-hot-toast, React-Toastify and a source-owned React toast compared on API, swipe, accessibility and bundle size in 2026.
A Tailwind safe area guide for v4: opt in with viewport-fit=cover, pad bars with env(safe-area-inset-bottom) and keep FABs and toasts off the home indicator.
Tailwind v4 design tokens from a production React library: @theme inline, semantic surfaces, status colors, dark mode and a contrast check you can run in CI.
Build an admin data table on TanStack Table v9: tableFeatures setup, column filters, bulk actions, start and end pinning, server pagination and phone cards.
The Web Vibration API in 2026: navigator.vibrate on Android, the iPhone switch tick that iOS 26.5 limits to real taps, and a React helper that fails quietly.