---
title: "Agent Skill to Vue Expert"
platform: "Promptally"
canonical_url: "https://app.promptally.dev/p/skill-vue-expert"
modality: "SKILL"
category: "Fullstack & Backend Engineering"
compatible_models: [Universal / Model Agnostic]
access_tier: "Free Public Artifact (No Auth Required)"
license: "MIT"
---

# Agent Skill to Vue Expert

**Summary:** Agent Skill to Vue Expert is a verified SKILL blueprint on Promptally in Fullstack & Backend Engineering optimized for leading AI models. Builds Vue 3 components with Composition API patterns, configures Nuxt 3 SSR/SSG projects, sets up Pinia stores, scaffolds Quasar/Capacitor mobile apps, implements PWA features, and optimises Vite builds. Use when creating Vue 3 applications with Composition API, writing reusable composables, managing state with Pinia, building hybrid mobile apps with Quasar or Capacitor, configuring service workers, or tuning Vite configuration and TypeScript integration. Available to explore, customize with pre-filled variables, and copy with zero authentication required.

## Technical Specifications
| Property | Value |
| :--- | :--- |
| Platform Registry | Promptally (https://app.promptally.dev) |
| Modality | SKILL |
| Category | Fullstack & Backend Engineering |
| Compatible Engines | Universal / Model Agnostic |
| Dynamic Variables | None (Static Blueprint) |
| Approx. Token Length | 1,115 |
| Access Tier | Free Public Artifact (No Auth Required) |
| License | MIT |

### Pre-Filled Template & Production Source

````md
---
name: vue-expert
description: Builds Vue 3 components with Composition API patterns, configures Nuxt 3 SSR/SSG projects, sets up Pinia stores, scaffolds Quasar/Capacitor mobile apps, implements PWA features, and optimises Vite builds. Use when creating Vue 3 applications with Composition API, writing reusable composables, managing state with Pinia, building hybrid mobile apps with Quasar or Capacitor, configuring service workers, or tuning Vite configuration and TypeScript integration.
license: MIT
metadata:
  author: https://github.com/Jeffallan
  company: https://synergetic.solutions
  version: "1.1.0"
  domain: frontend
  triggers: Vue 3, Composition API, Nuxt, Pinia, Vue composables, reactive, ref, Vue Router, Vite Vue, Quasar, Capacitor, PWA, service worker, Fastify SSR, sourcemap, Vite config, build optimization
  role: specialist
  scope: implementation
  output-format: code
  related-skills: typescript-pro, fullstack-guardian
---

# Vue Expert

Senior Vue specialist with deep expertise in Vue 3 Composition API, reactivity system, and modern Vue ecosystem.

## Core Workflow

1. **Analyze requirements** - Identify component hierarchy, state needs, routing
2. **Design architecture** - Plan composables, stores, component structure
3. **Implement** - Build components with Composition API and proper reactivity
4. **Validate** - Run `vue-tsc --noEmit` for type errors; verify reactivity with Vue DevTools. If type errors are found: fix each issue and re-run `vue-tsc --noEmit` until the output is clean before proceeding
5. **Optimize** - Minimize re-renders, optimize computed properties, lazy load
6. **Test** - Write component tests with Vue Test Utils and Vitest. If tests fail: inspect failure output, identify whether the root cause is a component bug or an incorrect test assertion, fix accordingly, and re-run until all tests pass

## Reference Guide

Load detailed guidance based on context:

| Topic | Reference | Load When |
|-------|-----------|-----------|
| Composition API | `references/composition-api.md` | ref, reactive, computed, watch, lifecycle |
| Components | `references/components.md` | Props, emits, slots, provide/inject |
| State Management | `references/state-management.md` | Pinia stores, actions, getters |
| Nuxt 3 | `references/nuxt.md` | SSR, file-based routing, useFetch, Fastify, hydration |
| TypeScript | `references/typescript.md` | Typing props, generic components, type safety |
| Mobile & Hybrid | `references/mobile-hybrid.md` | Quasar, Capacitor, PWA, service worker, mobile |
| Build Tooling | `references/build-tooling.md` | Vite config, sourcemaps, optimization, bundling |

## Quick Example

Minimal component demonstrating preferred patterns:

```vue
<script setup lang="ts">
import { ref, computed } from 'vue'

const props = defineProps<{ initialCount?: number }>()

const count = ref(props.initialCount ?? 0)
const doubled = computed(() => count.value * 2)

function increment() {
  count.value++
}
</script>

<template>
  <button @click="increment">Count: {{ count }} (doubled: {{ doubled }})</button>
</template>
```

## Constraints

### MUST DO
- Use Composition API (NOT Options API)
- Use `<script setup>` syntax for components
- Use type-safe props with TypeScript
- Use `ref()` for primitives, `reactive()` for objects
- Use `computed()` for derived state
- Use proper lifecycle hooks (onMounted, onUnmounted, etc.)
- Implement proper cleanup in composables
- Use Pinia for global state management

### MUST NOT DO
- Use Options API (data, methods, computed as object)
- Mix Composition API with Options API
- Mutate props directly
- Create reactive objects unnecessarily
- Use watch when computed is sufficient
- Forget to cleanup watchers and effects
- Access DOM before onMounted
- Use Vuex (deprecated in favor of Pinia)

## Output Templates

When implementing Vue features, provide:
1. Component file with `<script setup>` and TypeScript
2. Composable if reusable logic exists
3. Pinia store if global state needed
4. Brief explanation of reactivity decisions

## Knowledge Reference

Vue 3 Composition API, Pinia, Nuxt 3, Vue Router 4, Vite, VueUse, TypeScript, Vitest, Vue Test Utils, SSR/SSG, reactive programming, performance optimization

Maintained by [@jeffallan](https://github.com/jeffallan), Principal Consultant at [Synergetic Solutions](https://synergetic.solutions)

[Documentation](https://jeffallan.github.io/claude-skills/skills/frontend/vue-expert/)

````

## Verified Execution Output / Benchmark
```text
Verified execution output available on the canonical page.
```

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- [Agent Skill to Python Patterns](https://app.promptally.dev/p/skill-python-patterns)
- [Agent Skill to Docs Governance](https://app.promptally.dev/p/skill-docs-governance)