Vue

Name: vue
Rating: 78
Author: ZWkang

Based on Vue 3.5. 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

vue

<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

import {
  computed,
  defineAsyncComponent,
  defineComponent,
  nextTick,
  onBeforeMount,
  onBeforeUnmount,
  onBeforeUpdate,
  onMounted,
  onUnmounted,
  onUpdated,
  onWatcherCleanup,
  reactive,
  readonly,
  ref,
  shallowRef,
  toRef,
  toRefs,
  toValue,
  watch,
  watchEffect,
  watchPostEffect,
} from 'vue'