# vue-skilld

Guides coding agents through Vue 3.6 development. Useful when creating composables, setting up Vapor Mode, or migrating code from Vue 3.4 and 3.5.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 388 installs · ★ 184
- Author: skilld-dev
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/skilld-dev/vue-ecosystem-skills/tree/HEAD/skills/vue-skilld/SKILL.md
- Updated: 2026-10-10
- HTML: https://affpapa.org/en/nevibecode/skills/vue-skilld

## What it does

This skill provides context for building components against Vue 3.6.0-beta.17. It steers the agent toward modern patterns like `defineModel`, `useTemplateRef`, and `onWatcherCleanup`. References cover the alien-signals reactivity refactor alongside SFC bundler configurations.

Vapor Mode enforces strict boundaries. In Vapor components, Options API, `getCurrentInstance()`, `v-memo`, and `app.config.globalProperties` do not work. The skill prevents the assistant from proposing these invalid constructs, saving you from runtime failures during experiments without the Virtual DOM.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add skilld-dev/vue-ecosystem-skills --skill vue-skilld -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/vue-skilld/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/vue-skilld/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add skilld-dev/vue-ecosystem-skills --skill vue-skilld -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/vue-skilld/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add skilld-dev/vue-ecosystem-skills --skill vue-skilld -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/vue-skilld/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install skilld-dev/vue-ecosystem-skills vue-skilld
```

2. **Manually: put the files in place**
- File: `.github/skills/vue-skilld/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add skilld-dev/vue-ecosystem-skills --skill vue-skilld -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/skilld-dev/vue-ecosystem-skills --path skills/vue-skilld
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/vue-skilld/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add skilld-dev/vue-ecosystem-skills --skill vue-skilld -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/skilld-dev/vue-ecosystem-skills/tree/HEAD/skills/vue-skilld/SKILL.md

## When to use it
- refactor old Reactivity Transform code into plain `ref` and `computed`
- implement SSR lazy hydration using `hydrateOnVisible`
- prepare single-file components for Vapor Mode compilation
- replace obsolete `@vnodeXXX` event listeners with `@vue:mounted`

## Example prompts
- Refactor this component to Vue 3.6 syntax using useTemplateRef and defineModel
- Check this SFC for compatibility with Vapor Mode constraints
- Write a typed composable accepting MaybeRefOrGetter

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: ef35df4763516231.

BEGIN THIRD-PARTY FILE ef35df4763516231
````text
---
name: vue-skilld
description: Build, debug, and modernize UI with Vue 3.6. Use when editing *.vue files, writing components or composables, or working with code that imports "vue". Covers script setup, reactivity, Vapor Mode, SSR, and version-specific API changes from 3.4 through 3.6.0-beta.17.
license: MIT
---

# vue 3.6.0-beta.17 (vuejs/core)

Pre-release beta of the 3.6 line. Two headline changes vs 3.5:

- **Vapor Mode**, an opt-in compilation strategy for SFCs that skips the Virtual DOM; see [Vapor Mode](./references/vapor-mode.md).
- **alien-signals reactivity refactor**: `@vue/reactivity` was rebuilt on [alien-signals](https://github.com/stackblitz/alien-signals) for lower memory use and faster updates. No public API changes.

Package facts (from the prepared source):

- Version: `package.json:3`.
- The main entry re-exports `@vue/runtime-dom` AND `@vue/runtime-vapor`, so all Vapor APIs (`createVaporApp`, `vaporInteropPlugin`, `defineVaporComponent`) import from plain `vue`: `dist/vue.d.ts:4-5`.
- Named exports added by the `vue` package itself: `compile`, `defineVaporAsyncComponent`, `withAsyncContext`: `dist/vue.runtime.esm-bundler.js:12`.
- Subpath exports: `vue/server-renderer`, `vue/compiler-sfc`, `vue/jsx-runtime`, `vue/jsx`: `package.json:36-68`.
- TypeScript is an optional peer dependency (`*`): `package.json:107-113`.

## Common tasks

Component with `<script setup>`, reactive props destructure, and `defineModel`:

```vue
<script setup lang="ts">
const { count = 0 } = defineProps<{ count?: number }>()
const model = defineModel<string>({ default: '' })
</script>

<template>
  <input v-model="model" />
  <p>{{ count }}</p>
</template>
```

Template refs (3.5+ pattern):

```ts
import { useTemplateRef } from 'vue'
const input = useTemplateRef('my-input') // matches ref="my-input" in template
```

Watch with cleanup (3.5+):

```ts
import { watch, onWatcherCleanup } from 'vue'
watch(id, () => {
  const controller = new AbortController()
  load(id.value, controller)
  onWatcherCleanup(() => controller.abort())
})
```

Composable that accepts a value, ref, or getter:

```ts
import { toValue, type MaybeRefOrGetter } from 'vue'
function useDouble(source: MaybeRefOrGetter<number>) {
  return computed(() => toValue(source) * 2)
}
```

Lazy hydration for SSR (3.5+):

```ts
import { defineAsyncComponent, hydrateOnVisible } from 'vue'
const Heavy = defineAsyncComponent({
  loader: () => import('./Heavy.vue'),
  hydrate: hydrateOnVisible(),
})
```

## Version rules that change what you write

Full list with citations in [API changes](./references/api-changes.md). The ones that break old code:

- Reactivity Transform (`$ref`, `$computed`) was removed in 3.4. Use plain `ref`/`computed`, or the Vue Macros plugin.
- `@vnodeXXX` listeners are a compiler error since 3.4. Use `@vue:mounted` style listeners.
- Global `JSX` namespace is no longer registered since 3.4. Set `jsxImportSource: "vue"` in tsconfig, or import `vue/jsx`.
- In Vapor components (3.6), Options API, `app.config.globalProperties`, `getCurrentInstance()`, `v-memo`, and `@vue:xxx` element lifecycle events do not work.
````
END THIRD-PARTY FILE ef35df4763516231

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