Next.js 15 RC Features & Enhancements

Next.js 15 has introduced several exciting features and enhancements that aim to improve both development experience and application performance. In this article, we’ll explore some of the key updates.

New Features

Improved Static Site Generation

With Next.js 15, Static Site Generation (SSG) has become more efficient. The new version includes optimizations that reduce build times and improve the performance of static pages.

Enhanced API Routes

The API routes now support streaming responses and better error handling, which makes it easier to build robust server-side applications.

Automatic Image Optimization

The latest release includes automatic image optimization features that help in reducing page load times by serving appropriately sized images based on the user’s device.

Enhancements

Faster Development Builds

Development builds have been optimized for faster startup times and improved hot reloading, allowing developers to see changes in real-time without a significant delay.

Better Support for TypeScript

Next.js 15 provides improved TypeScript support with better type inference and enhanced configuration options for better development experience.

Code Example

Here is an example of using the new getStaticProps function in a Next.js page:

import { GetStaticProps } from 'next';

export const getStaticProps: GetStaticProps = async () => {
  const data = await fetch('https://api.example.com/data');
  const json = await data.json();

  return {
    props: {
      data: json,
    },
  };
};

const Page = ({ data }) => {
  return (
    <div>
      <h1>Data from API</h1>
      <pre><code>{JSON.stringify(data, null, 2)}</code></pre>
    </div>
  );
};

export default Page;

Blockquote

"Next.js 15 represents a significant step forward in the framework’s evolution, providing developers with powerful tools and enhancements."

Lists

Unordered List

• Static Site Generation improvements
• Enhanced API routes
• Automatic image optimization

Ordered List

1. Faster development builds
2. Improved TypeScript support
3. New features in static site generation

Inline Code

You can use getStaticProps to fetch data at build time.

Code Block

Here’s how you might configure a Next.js page to use TypeScript:

import { GetStaticProps } from 'next';

interface Props {
  data: any;
}

const Page: React.FC<Props> = ({ data }) => {
  return (
    <div>
      <h1>Page Title</h1>
    </div>
  );
};

export const getStaticProps: GetStaticProps<Props> = async () => {
  const data = await fetch('https://api.example.com/data');
  const json = await data.json();

  return {
    props: {
      data: json,
    },
  };
};

export default Page;

Images