Official and community-built adapters can now use client.assetQueryParams to specify query parameters that should be appended to asset URLs (CSS, JavaScript, images, fonts, etc.). The query parameters are automatically appended to all generated asset URLs during the build process.

Adapters can also use client.internalFetchHeaders to specify headers that should be included in Astro's internal fetch calls (Actions, View Transitions, Server Islands, Prefetch).

This enables features like Netlify's skew protection, which requires the deploy ID to be sent with both internal requests and asset URLs to ensure client and server versions match during deployments.

#14489 add4277 Thanks @dev-shetty! - Adds a new Copy to Clipboard button to the error overlay stack trace.

When an error occurs in dev mode, you can now copy the stack trace with a single click to more easily share it in a bug report, a support thread, or with your favorite LLM.

#14564 5e7cebb Thanks @florian-lefebvre! - Updates astro add cloudflare to scaffold more configuration files

Running astro add cloudflare will now emit wrangler.jsonc and public/.assetsignore, allowing your Astro project to work out of the box as a worker.

Patch Changes

#14591 3e887ec Thanks @matthewp! - Adds TypeScript support for the components prop on MDX Content component when using await render(). Developers now get proper IntelliSense and type checking when passing custom components to override default MDX element rendering.
#14598 7b45c65 Thanks @delucis! - Reduces terminal text styling dependency size by switching from kleur to picocolors
#13826 8079482 Thanks @florian-lefebvre! - Adds the option to specify in the preload directive which weights, styles, or subsets to preload for a given font family when using the experimental Fonts API:

  ---
  import { Font } from 'astro:assets';
  ---

  <Font
    cssVariable="--font-roboto"
    preload={[{ subset: 'latin', style: 'normal' }, { weight: '400' }]}
  />

Variable weight font files will be preloaded if any weight within its range is requested. For example, a font file for font weight 100 900 will be included when 400 is specified in a preload object.