Vue 3.5 & Composables
20. Vue 3.5 Core Primitives & Composables
Analyze Vue 3.5 reactive prop destructuring without toRefs, typed template references, SSR-safe ID generation, and modular composable lifecycles.
vue35-composables.vue
<script setup lang="ts">
import { watchEffect } from 'vue';
// Vue 3.5 Reactive Prop Destructure (Preserves signals without toRefs)
const { count = 0, label = 'Telemetric Metric' } = defineProps<{
count?: number;
label?: string;
}>();
// Vue 3.5 SSR-safe ID & Template References
const elementId = useId();
const inputRef = useTemplateRef<HTMLInputElement>('inputField');
watchEffect(() => {
console.log(`[Vue 3.5] ${label}: ${count} (ID: ${elementId})`);
});
</script>
<template>
<div :id="elementId" class="p-6 border rounded-2xl bg-white dark:bg-slate-900">
<h4 class="text-lg font-bold">{{ label }}</h4>
<p class="text-base text-slate-600 dark:text-slate-300 mt-2">Value: {{ count }}</p>
</div>
</template>Vue 3.5 Core Primitives & Composables
Vue 3.5 enhances the Composition API with compiler improvements for prop destructuring, SSR-safe element IDs, and typed template references.
- Reactive Prop Destructuring: Destructuring
defineProps()directly retains full reactivity without requiringtoRefs()ortoRef()boilerplate. useId(): Generates unique, stable element IDs across server rendering and client hydration to prevent accessibility mismatches.useTemplateRef(): Strongly typed DOM ref bindings that decouple variable names from template string literals.
Vue 3.5 Reactive Destructure Simulator Vue 3.5 Compiler
Simulated Vue 3.5 Component State SSR useId() = v-id-109
Destructured Prop:
Active Edge Isolates
Reactive Value:
42