# Vue

> Use when editing .vue files, creating Vue 3 components, writing composables, or testing Vue code - provides Composition API patterns, props/emits best practices, VueUse integration, and reactive destructuring guidance

- Skill: `tomevault-io/vue-44` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add tomevault-io/vue-44`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/vue-44/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Web & Frontend
- Author: tomevault-io (https://skillmd.com/u/tomevault-io)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/tomevault-io/vue-44

---


# Vue 3 Development

Reference for Vue 3 Composition API patterns, component architecture, and testing practices.

**Current stable:** Vue 3.5+ with enhanced reactivity performance (-56% memory, 10x faster array tracking), new SSR features, and improved developer experience.

## Overview

Progressive reference system for Vue 3 projects. Load only files relevant to current task to minimize context usage (~250 tokens base, 500-1500 per sub-file).

## When to Use

**Use this skill when:**

- Writing `.vue` components
- Creating composables (`use*` functions)
- Building client-side utilities
- Testing Vue components/composables

**Use `nuxt` skill instead for:**

- Server routes, API endpoints
- File-based routing, middleware
- Nuxt-specific patterns

**For styled UI components:** use `nuxt-ui` skill
**For headless accessible components:** use `reka-ui` skill
**For VueUse composables:** use `vueuse` skill

## Quick Reference

| Working on...            | Load file                    |
| ------------------------ | ---------------------------- |
| `.vue` in `components/`  | references/components.md     |
| File in `composables/`   | references/composables.md    |
| File in `utils/`         | references/utils-client.md   |
| `.spec.ts` or `.test.ts` | references/testing.md        |
| TypeScript patterns      | references/typescript.md     |
| Vue Router typing        | references/router.md         |
| Reactivity (ref, watch)  | references/reactivity.md     |
| Custom directives        | references/directives.md     |
| Provide/inject           | references/provide-inject.md |
| Edge cases, vue-tsc      | references/gotchas.md        |

## Loading Files

**Consider loading these reference files based on your task:**

- [ ] [references/components.md](references/components.md) - if working in `components/` or writing `.vue` files
- [ ] [references/composables.md](references/composables.md) - if creating composables (`use*` functions)
- [ ] [references/utils-client.md](references/utils-client.md) - if working in `utils/` or writing client utilities
- [ ] [references/testing.md](references/testing.md) - if writing `.spec.ts` or `.test.ts` files
- [ ] [references/typescript.md](references/typescript.md) - if working with Vue TypeScript patterns or generics
- [ ] [references/router.md](references/router.md) - if working with Vue Router or route typing
- [ ] [references/reactivity.md](references/reactivity.md) - if using ref, reactive, computed, watch, or watchEffect
- [ ] [references/directives.md](references/directives.md) - if creating or using custom directives
- [ ] [references/provide-inject.md](references/provide-inject.md) - if using provide/inject patterns
- [ ] [references/gotchas.md](references/gotchas.md) - if debugging edge cases or hydration issues

**DO NOT load all files at once.** Load only what's relevant to your current task.

## Quick Start

```vue
<script setup lang="ts">
const { count = 0 } = defineProps<{ count?: number }>()
const emit = defineEmits<{ update: [value: number] }>()
</script>

<template>
  <button @click="emit('update', count + 1)">
    Count: {{ count }}
  </button>
</template>
```

---
> Source: [robert-zaremba/ai-agent-skills](https://github.com/robert-zaremba/ai-agent-skills) — distributed by [TomeVault](https://tomevault.io).
<!-- tomevault:4.0:skill_md:2026-06-16 -->