- [#6850](https://github.com/withastro/astro/pull/6850) [`c6d7ebefd`](https://github.com/withastro/astro/commit/c6d7ebefdd554a9ef29cfeb426ac55cab80d6473) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Content collections now support data formats including JSON and YAML. You can also create relationships, or references, between collections to pull information from one collection entry into another. Learn more on our [updated Content Collections docs](https://docs.astro.build/en/guides/content-collections/).
- [#7095](https://github.com/withastro/astro/pull/7095) [`fb84622af`](https://github.com/withastro/astro/commit/fb84622af04f795de8d17f24192de105f70fe910) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Generate heading `id`s and populate the `headings` property for all Markdoc files
- [#7104](https://github.com/withastro/astro/pull/7104) [`826e02890`](https://github.com/withastro/astro/commit/826e0289005f645b902375b98d5549c6a95ccafa) Thanks [@bluwy](https://github.com/bluwy)! - Specify `"files"` field to only publish necessary files
- [#6932](https://github.com/withastro/astro/pull/6932) [`49514e4ce`](https://github.com/withastro/astro/commit/49514e4ce40fedb39bf7decd2c296258efbdafc7) Thanks [@bluwy](https://github.com/bluwy)! - Upgrade shiki to v0.14.1. This updates the shiki theme colors and adds the theme name to the `pre` tag, e.g. `<pre class="astro-code github-dark">`.
- [#6723](https://github.com/withastro/astro/pull/6723) [`73fcc7627`](https://github.com/withastro/astro/commit/73fcc7627e27a001d3ed2f4d046999d91f1aef85) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Fix: when using `render: null` in your config, content is now rendered without a wrapper element.
- [#6653](https://github.com/withastro/astro/pull/6653) [`7c439868a`](https://github.com/withastro/astro/commit/7c439868a3bc7d466418da9af669966014f3d9fe) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Simplify Markdoc configuration with a new `markdoc.config.mjs` file. This lets you import Astro components directly to render as Markdoc tags and nodes, without the need for the previous `components` property. This new configuration also unlocks passing variables to your Markdoc from the `Content` component ([see the new docs](https://docs.astro.build/en/guides/integrations-guide/markdoc/#pass-markdoc-variables)).
## Migration
Move any existing Markdoc config from your `astro.config` to a new `markdoc.config.mjs` file at the root of your project. This should be applied as a default export, with the optional `defineMarkdocConfig()` helper for autocomplete in your editor.
This example configures an `aside` Markdoc tag. Note that components should be imported and applied to the `render` attribute _directly,_ instead of passing the name as a string:
```js
// markdoc.config.mjs
import { defineMarkdocConfig } from '@astrojs/markdoc/config';
import Aside from './src/components/Aside.astro';
export default defineMarkdocConfig({
tags: {
aside: {
render: Aside,
},
},
});
```
You should also remove the `components` prop from your `Content` components. Since components are imported into your config directly, this is no longer needed.
- [#6630](https://github.com/withastro/astro/pull/6630) [`cfcf2e2ff`](https://github.com/withastro/astro/commit/cfcf2e2ffdaa68ace5c84329c05b83559a29d638) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Support automatic image optimization for Markdoc images when using `experimental.assets`. You can [follow our Assets guide](https://docs.astro.build/en/guides/assets/#enabling-assets-in-your-project) to enable this feature in your project. Then, start using relative or aliased image sources in your Markdoc files for automatic optimization:
```md
<!--Relative paths-->
<!--Or configured aliases-->
- [#6588](https://github.com/withastro/astro/pull/6588) [`f42f47dc6`](https://github.com/withastro/astro/commit/f42f47dc6a91cdb6534dab0ecbf9e8e85f00ba40) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Allow access to content collection entry information (including parsed frontmatter and the entry slug) from your Markdoc using the `$entry` variable:
- [#6209](https://github.com/withastro/astro/pull/6209) [`fec583909`](https://github.com/withastro/astro/commit/fec583909ab62829dc0c1600e2387979365f2b94) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Introduce the (experimental) `@astrojs/markdoc` integration. This unlocks Markdoc inside your Content Collections, bringing support for Astro and UI components in your content. This also improves Astro core internals to make Content Collections extensible to more file types in the future.
You can install this integration using the `astro add` command:
```
astro add markdoc
```
[Read the `@astrojs/markdoc` documentation](https://docs.astro.build/en/guides/integrations-guide/markdoc/) for usage instructions, and browse the [new `with-markdoc` starter](https://astro.new/with-markdoc) to try for yourself.
