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What’s New in Next.js 14?

Leo G. 54

What’s New in Next.js 14?

Leo G.
JavaScript in Plain English
4 min read2 days ago


Hey there! Just caught the Next.js Keynote online and, let me tell you, it’s a game-changer. I’m stoked to give you the quick and dirty rundown of what’s new and why it matters.

No fluff, just the good stuff.

Ready? Let’s jump in!


Turbopack: A New Engine for Speed

Let’s cut straight to the chase.

Next.js 14 introduces Turbopack, a Rust-based engine that boosts your local development like never before.

next dev --turbo

It’s not just hype; the data proves it. You can look forward to a 53% faster local server startup and a 94% speedier code update with Fast Refresh.

Imagine getting all these performance benefits without changing a single line of code in your existing Next.js project!

Server Actions: Streamlining Data Mutations

Ever thought of triggering server-side code without the need for a dedicated API route?

Next.js 14 brings Server Actions into a stable release.

It’s a game-changer for the developer experience. Now, with just a function defined in your React component, you can perform actions on the server securely.

Here’s a simplified example:

export default function Page() {
async function create(formData: FormData) {
'use server';
const id = await createItem(formData);

return (
<form action={create}>
<input type="text" name="name" />
<button type="submit">Submit</button>

This not only simplifies your code but also enhances the user experience by reducing the number of network roundtrips needed for mutating data and re-rendering the page.

Partial Prerendering: The Best of Both Worlds

Partial Prerendering is in preview, but it’s already exciting.

With the ongoing debate between SSR and SSG, Next.js has decided to bring you the benefits of both worlds.

It provides a fast initial static response while streaming dynamic content based on your React Suspense boundaries. So, you get the…