Vue 3 + Nuxt 4 in 2026: Migration, Fixes & Comparison with React/Next.js

Full guide to building modern apps with Nuxt 4, Vue 3 Composition API, performance tips, and when to choose it over the React ecosystem.

Nuxt 4 Project Setup

npx nuxi@latest init my-nuxt-app
cd my-nuxt-app
npm install

Composition API + Pinia State Management

<script setup lang="ts">
import { useCounterStore } from '~/stores/counter';
const store = useCounterStore();
const { count, doubleCount } = storeToRefs(store);
function increment() { store.increment(); }
</script>
<template>
  <div class="p-8">
    <h1 class="text-4xl">Count: {{ count }}</h1>
    <button @click="increment" class="px-6 py-3 bg-blue-600 text-white rounded-xl">Increment</button>
    <p>Double: {{ doubleCount }}</p>
  </div>
</template>

Common Nuxt Issues & Fixes

Hydration mismatches → use <ClientOnly> or useAsyncData.

Vue vs React 2026 (quick comparison)

• Learning curve: Vue/Nuxt gentle · React/Next.js steeper
• Bundle size: Vue/Nuxt smaller · React larger (with optimizations)
• Ecosystem: Vue growing fast · React massive

Weighing other options? Compare with the Svelte 5 guide and the Astro 5 SEO guide.

Conclusion

Nuxt 4 shines for teams who love simplicity and excellent DX.