Nuxt 3 Beta: What's New and How to Get Started

Nuxt 3: A Deep Dive into its Enhanced Features and Practical Implementation

This article explores Nuxt 3's key improvements and demonstrates practical usage. We'll cover its capabilities and implementation in your projects.

Key Features:

• Nitro Engine: A high-performance server engine built on h3, enabling API routes, serverless deployments (Vercel, Netlify, AWS, Azure), and deployment on various JavaScript environments (Node, Deno, Serverless, Workers). It generates API endpoints from server/api/ and middleware from server/middleware/, offering streamlined development. Expect significantly smaller bundles (up to 75x smaller) and optimized cold starts.

• Nuxi CLI: A revamped CLI providing zero-dependency project scaffolding and simplified module integration.

• Nuxt Kit & Nuxt Bridge: Nuxt Kit facilitates flexible module development with TypeScript support. Nuxt Bridge ensures a smooth transition from Nuxt 2 by allowing incremental adoption of Nuxt 3 features in existing projects. This includes using Nitro, the Composition API, the new CLI, and progressive upgrades.

• Vue 3 Alignment: Full compatibility with Vue 3, leveraging features like the Composition API and built-in composables like useFetch(), useState(), and useMeta().

• Enhanced DX: Support for Webpack 5 and Vite, native ESM support, auto-importing of utilities and composables, and improved TypeScript integration for a streamlined development workflow.

Nuxt 3 Project Structure:

Key structural changes from Nuxt 2 include: an app.vue file for global components and styles; optional pages/ directory (resulting in lighter builds if omitted); a composables/ directory for auto-imported composables; and a .output/ directory for optimized build output.

Building a Minimal Blog:

This section demonstrates core Nuxt 3 functionality by building a simple blog. We'll use Tailwind CSS for styling.

1. Integrating Tailwind CSS:

Install Tailwind and configure tailwind.config.js and postcss.config.js. Update nuxt.config.ts to include your CSS file.

2. Creating a Custom Layout (layouts/blog.vue):

<template>
  <div>
    <header class="text-white bg-green-500 p-4">HEADER</header>
    <main><slot /></slot>
    <footer class="text-white bg-green-500 p-4">FOOTER</footer>
  </div>
</template>

3. Creating Blog Pages:

• pages/index.vue (Home Page): Fetches posts using useFetch() and renders them using NuxtLink.

• pages/post-[id].vue (Individual Post Page): Uses useRoute() to get the post ID, fetches the post data, and displays it. Includes a NuxtLink back to the home page. A custom quote component (see below) is added.

4. Creating a Custom Component (components/quote.vue):

Fetches a quote of the day using useFetch() and displays it.

5. Creating and Using a Composable (composables/useCounter.js):

A simple counter composable demonstrating the auto-import functionality. Used in a separate pages/counter.vue page.

Conclusion:

Nuxt 3 offers significant performance improvements and developer experience enhancements. While still in beta, it's a powerful framework for building Vue.js applications. Remember that the beta status implies potential instability.

Frequently Asked Questions (FAQs):

The provided FAQs are already well-structured and answer common questions about Nuxt 3's features and usage. No changes are needed.

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