Configure and integrate Vite in Nx monorepos for applications and libraries. Covers vite.config.ts setup, framework plugins, TypeScript path resolution, asset copying, library mode builds, and Vitest integration. Use when: adding Vite to an Nx project, migrating from Webpack, configuring Vitest, fixing tsconfig path resolution, or setting up library mode. Triggers: "add vite", "nx vite", "vite setup", "vite.config.ts", "vitest config", "library mode", "nxViteTsPaths", "copy assets", "vite path aliases", "migrate webpack to vite" Examples: - user: "Add Vite to this Nx app" -> install plugin and configure vite.config.ts - user: "Vitest is failing in Nx" -> fix test config and cache/coverage paths - user: "Path aliases break in Vite" -> add nxViteTsPaths plugin - user: "Set up Vite for my Nx library" -> configure lib mode + dts + externals