withastro/astro @astrojs/svelte@6.0.0

on GitHub

Major Changes

• #12364 9fc2ab8 Thanks @jdtjenkins! - Adds support for Svelte 5. Svelte 3 and 4 are no longer supported.

  The integration will now also no longer add vitePreprocess() by default if a preprocessor is not set up in svelte.config.js. It is recommended to set up the Svelte config manually so that features like IDE completion and syntax highlighting work properly.

  If you're using SCSS, Stylus, etc in your Svelte component style tags, make sure that the preprocessor is also set up in svelte.config.js. For example:

  // svelte.config.js
  import { vitePreprocess } from '@astrojs/svelte';
  
  export default {
    preprocess: vitePreprocess(),
  };

  Refer to the Svelte 5 migration guide and @sveltejs/vite-plugin-svelte changelog for details of their respective breaking changes.