Anthony Fu's Skills is a curated collection of instructions that guide coding agents in using particular tools, frameworks, and development practices. It is mainly aimed at projects using technologies such as Vite, Nuxt, Vue, TypeScript, and related JavaScript tooling. The catalogue entries are skills and instructions from this collection.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add antfu/skills --skill vitegit clone --depth 1 https://github.com/antfu/skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/antfu/skills/vite)<a href="https://agentmods.dev/skills/antfu/skills/vite"><img src="https://agentmods.dev/badge/skills/antfu/skills/vite/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/antfu/skills/vite"><img src="https://agentmods.dev/badge/skills/antfu/skills/vite.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00049 | $0.00678 |
| Opus 5.5 | $0.00020 | $0.00271 |
| Sonnet 5.5 | $0.00010 | $0.00136 |
| Haiku 4.5 | $0.00005 | $0.00068 |
Grade A, and why
vite scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 21d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Vite
Based on Vite v8.3.1 (Rolldown-powered), generated at 2026-09-25. Vite 8 uses the Rolldown bundler and the Oxc transformer instead of esbuild + Rollup.
Vite is a next-generation frontend build tool with fast dev server (native ESM + HMR) and optimized production builds.
Preferences
- Use TypeScript: prefer
vite.config.ts - Always use ESM, avoid CommonJS
Core
| Topic | Description | Reference |
|---|---|---|
| Configuration | vite.config.ts, defineConfig, conditional configs, loadEnv |
core-config |
| Features | import.meta.glob, asset queries (?raw, ?url), import.meta.env, HMR API |
core-features |
| Plugin API | Vite-specific hooks, virtual modules, plugin ordering | core-plugin-api |
Build & SSR
| Topic | Description | Reference |
|---|---|---|
| Build & SSR | Library mode, SSR middleware mode, ssrLoadModule, JavaScript API |
build-and-ssr |
Advanced
| Topic | Description | Reference |
|---|---|---|
| Environment API | Vite 6+ multi-environment support, custom runtimes | environment-api |
| Rolldown Migration | Vite 8 changes: Rolldown bundler, Oxc transformer, config migration | rolldown-migration |
Quick Reference
CLI Commands
vite # Start dev server
vite build # Production build
vite preview # Preview production build
vite build --ssr # SSR build
Common Config
import { defineConfig } from 'vite'
export default defineConfig({
plugins: [],
resolve: { alias: { '@': '/src' } },
server: { port: 3000, proxy: { '/api': 'http://localhost:8080' } },
build: { target: 'esnext', outDir: 'dist' },
})
Official Plugins
@vitejs/plugin-vue- Vue 3 SFC support@vitejs/plugin-vue-jsx- Vue 3 JSX@vitejs/plugin-react- React with Oxc/Babel@vitejs/plugin-react-swc- React with SWC@vitejs/plugin-legacy- Legacy browser support
What ships with it
7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 21d ago Changed 20bddfc0d23d
- 1mo ago First seen · 73 lines · 49 tokens per session scan A 3cb7a75336e3
vite is a skill published in the GitHub repository antfu/skills (5,986 stars, last pushed 11d ago), licensed MIT. It adds 49 tokens to every session and 678 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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