Metadata
- name
- vue
- description
- Vue 3 Composition API, script setup macros, reactivity system, and built-in components. Use when writing Vue SFCs, defineProps/defineEmits/defineModel, watchers, or using Transition/Teleport/Suspense/KeepAlive.
- metadata
- {"author":"Anthony Fu","version":"2026.9.25","source":"Generated from https://github.com/vuejs/docs, scripts at https://github.com/antfu/skills"}
Vue
Based on Vue 3.5, generated at 2026-09-25. Always use Composition API with <script setup lang="ts">.
Preferences
- Prefer TypeScript over JavaScript
- Prefer
<script setup lang="ts"> over <script>
- For performance, prefer
shallowRef over ref if deep reactivity is not needed
- Always use Composition API over Options API
- Discourage using Reactive Props Destructure
Core
| Topic |
Description |
Reference |
| Script Setup & Macros |
<script setup>, defineProps, defineEmits, defineModel, defineExpose, defineOptions, defineSlots, generics |
script-setup-macros |
| Reactivity & Lifecycle |
ref, shallowRef, computed, watch, watchEffect, effectScope, lifecycle hooks, composables |
core-new-apis |
Features
| Topic |
Description |
Reference |
| Built-in Components & Directives |
Transition, Teleport, Suspense, KeepAlive, v-memo, custom directives |
advanced-patterns |
Quick Reference
Component Template
<script setup lang="ts">
import { ref, computed, watch, onMounted } from 'vue'
const props = defineProps<{
title: string
count?: number
}>()
const emit = defineEmits<{
update: [value: string]
}>()
const model = defineModel<string>()
const doubled = computed(() => (props.count ?? 0) * 2)
watch(() => props.title, (newVal) => {
console.log('Title changed:', newVal)
})
onMounted(() => {
console.log('Component mounted')
})
</script>
<template>
<div>{{ title }} - {{ doubled }}</div>
</template>
Key Imports
// Reactivity
import { ref, shallowRef, computed, reactive, readonly, toRef, toRefs, toValue } from 'vue'
// Watchers
import { watch, watchEffect, watchPostEffect, onWatcherCleanup } from 'vue'
// Lifecycle
import { onMounted, onUpdated, onUnmounted, onBeforeMount, onBeforeUpdate, onBeforeUnmount } from 'vue'
// Utilities
import { nextTick, defineComponent, defineAsyncComponent } from 'vue'
