typescript-dev

# TypeScript Frontend Development One coherent stack for building type-safe TypeScript apps: **Vite 8** (build + dev server, Rolldown-powered), **React 19.2** with the React Compiler, **TypeScript 6.0** (strict), **Tailwind CSS v4.3 + shadcn/ui** for styling, **Biome 2.4** for linting and formatting, **Vitest 4** for testing, and **Hono 4** for the backend/edge API. The pieces are designed to fit together - this skill covers how they wire up and the sharp edges that span more than one of them. Hono's RPC client (`hc`) shares server types directly with the React frontend, so the front and back end stay type-safe end to end without codegen. The body below is the cross-cutting layer: the rules that bite when these tools meet, plus one working end-to-end setup. Each tool also has a deep-dive reference - read the one you need: - **[references/vite.md](references/vite.md)** - Vite 8 config, dev server, proxy, HMR, Rolldown, code splitting, build optimization, deployment. - **[references/react.md](references/react.md)** - React 19 patterns: Actions, `use()`, Activity, `useEffectEvent`, document metadata, and the React Compiler. - **[references/typescript.md](references/typescript.md)** - Strict TypeScript 6.0 config and patterns: tsconfig defaults, generics, utility types, `import defer`, tsgo. - **[references/tailwind.md](references/tailwind.md)** - Tailwind CSS v4 CSS-first config, OKLCH theming, dark mode, v4.3 utilities. - **[references/shadcn.md](references/shadcn.md)** - sh...