pupila: Skill for Claude Code

.agents/skills/vite/SKILL.md

vite is a skill for Claude Code, Codex from FranRom/pupila. It costs 49 tokens per session (647 once invoked), scanned A, original, MIT.

A guide to configuring Vite, a tool that runs a fast development server and prepares JavaScript or TypeScript projects for production. It covers plugins, server-side rendering, libraries, and the newer Rolldown-based build process.

In plain words
What is it for?
Use it to edit Vite configuration, create plugins, build libraries, set up server-side rendering, or migrate toward Vite 8 and Rolldown.
Why use it?
It helps when a Vite project needs configuration or when its development and production builds behave differently.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is FranRom/pupila's own configuration. It tells Claude Code and Codex how to work on pupila itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything pupila configures →

Reuse

Borrowing it

Nothing to install: this file belongs to FranRom/pupila. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/FranRom/pupila/main/.agents/skills/vite/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/FranRom/pupila

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for vite

README.md
[![agentmods](https://agentmods.dev/badge/skills/franrom/pupila/vite/github.svg)](https://agentmods.dev/skills/franrom/pupila/vite)
Your own site
<a href="https://agentmods.dev/skills/franrom/pupila/vite"><img src="https://agentmods.dev/badge/skills/franrom/pupila/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.

agentmods 80×15 button for vite

Your own site · 80×15
<a href="https://agentmods.dev/skills/franrom/pupila/vite"><img src="https://agentmods.dev/badge/skills/franrom/pupila/vite.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 647 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00049 $0.00647
Opus 5.5 $0.00020 $0.00259
Sonnet 5.5 $0.00010 $0.00129
Haiku 4.5 $0.00005 $0.00065

Measured 1mo ago against content hash ee635db387e2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

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 1mo 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.

.agents/skills/vite/SKILL.md · 73 lines

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 8 beta (Rolldown-powered). Vite 8 uses Rolldown bundler + Oxc transformer.

Next-gen frontend build tool. Fast dev server (native ESM + HMR), optimized prod builds.

Preferences

  • TypeScript: prefer vite.config.ts
  • ESM only, no 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
  • @vitejs/plugin-vue-jsx — Vue 3 JSX
  • @vitejs/plugin-react — React, Oxc/Babel
  • @vitejs/plugin-react-swc — React, SWC
  • @vitejs/plugin-legacy — legacy browsers

Read the full file on GitHub · 73 lines

Files

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.

Changes

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.

  1. 1mo ago First seen · 73 lines · 49 tokens per session scan A ee635db387e2

Subscribe to this mod's changes

vite is a skill published in the GitHub repository FranRom/pupila (36 stars, last pushed yesterday), licensed MIT. It adds 49 tokens to every session and 647 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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