“react”

Build frontend Solana applications with Phantom Connect SDK and Helius infrastructure.

Builds game rules as a pure seeded engine: create, listMoves, applyMove, outcome, events, property tests.

Builds and checks Expo Router routes and layouts against a contract: typed hrefs, params, protected flows, modals, back guards.

Creates a new Expo app from empty - SDK 57 stack, Expo Router, root configs, gates, variants, icons - proven by a checker.

tasteskill v2, the anti-slop frontend skill.

Builds calendar-day logic: local date keys, an injected clock, midnight, DST, streaks, stats.

PROFILE animation performance BEFORE optimizing — identify the ACTUAL bottleneck using Chrome DevTools, React Profiler, and custom metrics.

Generate interactive presentation slides using React + Tailwind, and export to standalone single-file HTML.

Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn/ui).

React frontend tests.

Generate Vitest + React Testing Library tests for Dify frontend components, hooks, and utilities.

Enforces a11y labels, 44pt targets, 200% text, VoiceOver, TalkBack.

Lays screens out by window, not device: breakpoints, master-detail panes, readable widths, grids.

Builds AdMob ads behind a port - banners, interstitials, rewarded, UMP consent then ATT, pacing, ADS_MODE test IDs.

Gates analytics on opt-in consent: no SDK before a yes, typed events without personal data, ATT.

Places app code in the src/ layout and checks import boundaries: one-way zones, pure core, ports with fakes, one composition root.

Prevents silent async bugs: effect races, stale results, lost promises, leaked listeners and timers, AbortSignal gaps.

Builds SFX and haptics behind ports.

Builds sign-in - tokens in expo-secure-store, shared refresh, protected routes, OAuth PKCE, Apple sign-in.

Builds expo-background-task jobs: idempotent, budgeted runs.

Turns canvas taps, swipes, drags and aim into typed intents: one gesture module, hit-testing on the drawn layout.

Builds GitHub Actions CI for Expo apps - verify on every PR, SHA-pinned actions, pinned runners and Node, device lanes, manual EAS releases.

Gates test-only code behind one literal TEST_ONLY switch: debug menu, debug link, simulated clock and offline.

Gates every incoming link: custom schemes, universal links (AASA), App Links (assetlinks), a route allow-list.