feat: biblioteca inteligente libs/ + 5 novas skills (20 skills total)
NOVAS SKILLS: - next-best-practices v0.1.0 (CLEAN) — Next.js App Router, RSC, caching, data - nextjs-patterns v1.0.0 (CLEAN) — Next.js 15: Server Actions, route handlers - vite v1.0.0 (CLEAN) — env vars, aliases, proxy, CJS compat - uncle-bob v1.0.0 (CLEAN) — Clean Code, SOLID, Clean Architecture - clean-code-review v1.0.0 (CLEAN) — naming, guard clauses, anti-patterns, refactoring - vue v1.0.0 (CLEAN) — Vue framework - vue-composition-api-best-practices v1.0.0 (CLEAN) — composables, Pinia, reactivity BIBLIOTECA INTELIGENTE libs/ (10 dominios, 11 arquivos): - typescript/ — TS safe + generics gotchas - react/ — Next.js App Router + Vite config - vue/ — Composition API + Pinia - linux/ — System diagnostic cheatsheet - database/ — PostgreSQL + MySQL patterns - browser/ — Chromium CLI + E2E testing - security/ — SAST audit (OWASP Top 10) - best-practices/ — Clean Code + SOLID + Clean Architecture - deploy/ — Docker multi-stack + OpenClaw ops - + INDEX.md como guia de navegacao .learnings/ — LRN-20260519-003 criado (biblioteca compartilhada)
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---
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name: Vite
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description: Configure and optimize Vite for development, production builds, and library bundling.
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metadata: {"clawdbot":{"emoji":"⚡","requires":{"bins":["node"]},"os":["linux","darwin","win32"]}}
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---
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# Vite Patterns
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## Environment Variables
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- Only `VITE_` prefixed vars are exposed to client code — `DB_PASSWORD` stays server-side, `VITE_API_URL` is bundled
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- Access via `import.meta.env.VITE_*` not `process.env` — process.env is Node-only and undefined in browser
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- `.env.local` overrides `.env` and is gitignored by default — use for local secrets
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- `import.meta.env.MODE` is `development` or `production` — use for conditional logic, not `NODE_ENV`
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## CommonJS Compatibility
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- Pure ESM by default — CommonJS packages need `optimizeDeps.include` for pre-bundling
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- `require()` doesn't work in Vite — use `import` or `createRequire` from `module` for dynamic requires
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- Some packages ship broken ESM — add to `ssr.noExternal` or `optimizeDeps.exclude` and let Vite transform them
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- Named exports from CommonJS may fail — use default import and destructure: `import pkg from 'pkg'; const { method } = pkg`
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## Dependency Pre-bundling
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- Vite pre-bundles dependencies on first run — delete `node_modules/.vite` to force rebuild after package changes
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- Large dependencies slow down dev server start — add rarely-changing ones to `optimizeDeps.include` for persistent cache
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- Linked local packages (`npm link`) aren't pre-bundled — add to `optimizeDeps.include` explicitly
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- `optimizeDeps.force: true` rebuilds every time — only for debugging, kills dev performance
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## Path Aliases
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- Configure in both `vite.config.ts` AND `tsconfig.json` — Vite uses its own, TypeScript uses tsconfig
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- Use `path.resolve(__dirname, './src')` not relative paths — relative breaks depending on working directory
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- `@/` alias is not built-in — must configure manually unlike some frameworks
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```typescript
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// vite.config.ts
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resolve: {
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alias: { '@': path.resolve(__dirname, './src') }
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}
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```
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## Dev Server Proxy
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- Proxy only works in dev — production needs actual CORS config or reverse proxy
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- `changeOrigin: true` rewrites Host header — required for most APIs that check origin
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- WebSocket proxy needs explicit `ws: true` — HTTP proxy doesn't forward WS by default
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- Trailing slashes matter: `/api` proxies `/api/users`, `/api/` only proxies `/api//users`
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```typescript
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server: {
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proxy: {
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'/api': {
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target: 'http://localhost:3000',
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changeOrigin: true,
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rewrite: path => path.replace(/^\/api/, '')
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}
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}
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}
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```
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## Static Assets
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- `public/` files served at root, not processed — use for favicons, robots.txt, files that need exact paths
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- `src/assets/` files are processed, hashed, can be imported — use for images, fonts referenced in code
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- Import assets to get resolved URL: `import logo from './logo.png'` — hardcoded paths break after build
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- `new URL('./img.png', import.meta.url)` for dynamic paths — template literals with variables don't work
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## Build Optimization
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- `build.rollupOptions.output.manualChunks` for code splitting — without it, one giant bundle
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- Analyze bundle with `rollup-plugin-visualizer` — find unexpected large dependencies
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- `build.target` defaults to modern browsers — set `'es2015'` for legacy support, but increases bundle size
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- `build.cssCodeSplit: true` (default) — each async chunk gets its own CSS file
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## Library Mode
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- `build.lib` for npm packages — different config from app mode
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- Set `external` for peer dependencies — don't bundle React/Vue into your library
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- Generate types separately with `tsc` — Vite doesn't emit `.d.ts` files
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- Both ESM and CJS outputs: `formats: ['es', 'cjs']` — some consumers still need require()
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## HMR Issues
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- Circular imports break HMR — refactor to break the cycle or full reload triggers
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- State lost on HMR means component isn't accepting updates — check for `import.meta.hot.accept()`
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- CSS changes trigger full reload if imported in JS that doesn't accept HMR — import CSS in components that do
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- `server.hmr.overlay: false` hides error overlay — useful for custom error handling but hides issues
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## SSR Configuration
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- `ssr.external` for Node-only packages — prevents bundling node_modules in SSR build
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- `ssr.noExternal` forces bundling — needed for packages with browser-specific imports
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- CSS imports fail in SSR by default — use `?inline` suffix or configure `css.postcss` for SSR
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