- [#5687](https://github.com/withastro/astro/pull/5687) [`e2019be6f`](https://github.com/withastro/astro/commit/e2019be6ffa46fa33d92cfd346f9ecbe51bb7144) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Give remark and rehype plugins access to user frontmatter via frontmatter injection. This means `data.astro.frontmatter` is now the _complete_ Markdown or MDX document's frontmatter, rather than an empty object.
This allows plugin authors to modify existing frontmatter, or compute new properties based on other properties. For example, say you want to compute a full image URL based on an `imageSrc` slug in your document frontmatter:
```ts
export function remarkInjectSocialImagePlugin() {
return function (tree, file) {
const { frontmatter } = file.data.astro;
frontmatter.socialImageSrc = new URL(frontmatter.imageSrc, 'https://my-blog.com/').pathname;
};
}
```
#### Content Collections - new `remarkPluginFrontmatter` property
We have changed _inject_ frontmatter to _modify_ frontmatter in our docs to improve discoverability. This is based on support forum feedback, where "injection" is rarely the term used.
To reflect this, the `injectedFrontmatter` property has been renamed to `remarkPluginFrontmatter`. This should clarify this plugin is still separate from the `data` export Content Collections expose today.
#### Migration instructions
Plugin authors should now **check for user frontmatter when applying defaults.**
For example, say a remark plugin wants to apply a default `title` if none is present. Add a conditional to check if the property is present, and update if none exists:
```diff
export function remarkInjectTitlePlugin() {
return function (tree, file) {
const { frontmatter } = file.data.astro;
+ if (!frontmatter.title) {
frontmatter.title = 'Default title';
+ }
}
}
```
This differs from previous behavior, where a Markdown file's frontmatter would _always_ override frontmatter injected via remark or reype.
- [#5684](https://github.com/withastro/astro/pull/5684) [`a9c292026`](https://github.com/withastro/astro/commit/a9c2920264e36cc5dc05f4adc1912187979edb0d) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Refine Markdown and MDX configuration options for ease-of-use.
#### Markdown
- **Remove `remark-smartypants`** from Astro's default Markdown plugins.
- **Replace the `extendDefaultPlugins` option** with a simplified `gfm` boolean. This is enabled by default, and can be disabled to remove GitHub-Flavored Markdown.
- Ensure GitHub-Flavored Markdown is applied whether or not custom `remarkPlugins` or `rehypePlugins` are configured. If you want to apply custom plugins _and_ remove GFM, manually set `gfm: false` in your config.
#### MDX
- Support _all_ Markdown configuration options (except `drafts`) from your MDX integration config. This includes `syntaxHighlighting` and `shikiConfig` options to further customize the MDX renderer.
- Simplify `extendDefaults` to an `extendMarkdownConfig` option. MDX options will default to their equivalent in your Markdown config. By setting `extendMarkdownConfig` to false, you can "eject" to set your own syntax highlighting, plugins, and more.
#### Migration
To preserve your existing Markdown and MDX setup, you may need some configuration changes:
##### Smartypants manual installation
[Smartypants](https://github.com/silvenon/remark-smartypants) has been removed from Astro's default setup. If you rely on this plugin, [install `remark-smartypants`](https://github.com/silvenon/remark-smartypants#installing) and apply to your `astro.config.*`:
```diff
// astro.config.mjs
import { defineConfig } from 'astro/config';
+ import smartypants from 'remark-smartypants';
export default defineConfig({
markdown: {
+ remarkPlugins: [smartypants],
}
});
```
##### Migrate `extendDefaultPlugins` to `gfm`
You may have disabled Astro's built-in plugins (GitHub-Flavored Markdown and Smartypants) with the `extendDefaultPlugins` option. Since Smartypants has been removed, this has been renamed to `gfm`.
```diff
// astro.config.mjs
import { defineConfig } from 'astro/config';
export default defineConfig({
markdown: {
- extendDefaultPlugins: false,
+ gfm: false,
}
});
```
Additionally, applying remark and rehype plugins **no longer disables**`gfm`. You will need to opt-out manually by setting `gfm` to `false`.
##### Migrate MDX's `extendPlugins` to `extendMarkdownConfig`
You may have used the `extendPlugins` option to manage plugin defaults in MDX. This has been replaced by 2 flags:
-`extendMarkdownConfig` (`true` by default) to toggle Markdown config inheritance. This replaces the `extendPlugins: 'markdown'` option.
-`gfm` (`true` by default) to toggle GitHub-Flavored Markdown in MDX. This replaces the `extendPlugins: 'defaults'` option.
- [#5654](https://github.com/withastro/astro/pull/5654) [`2c65b433b`](https://github.com/withastro/astro/commit/2c65b433bf840a1bb93b0a1947df5949e33512ff) Thanks [@delucis](https://github.com/delucis)! - Run heading ID injection after user plugins
⚠️ BREAKING CHANGE ⚠️
If you are using a rehype plugin that depends on heading IDs injected by Astro, the IDs will no longer be available when your plugin runs by default.
To inject IDs before your plugins run, import and add the `rehypeHeadingIds` plugin to your `rehypePlugins` config:
```diff
// astro.config.mjs
+ import { rehypeHeadingIds } from '@astrojs/markdown-remark';
- [#5522](https://github.com/withastro/astro/pull/5522) [`efc4363e0`](https://github.com/withastro/astro/commit/efc4363e0baf7f92900e20af339811bb3df42b0e) Thanks [@delucis](https://github.com/delucis)! - Support use of `<Fragment>` in MDX files rendered with `<Content />` component
- [#5335](https://github.com/withastro/astro/pull/5335) [`dca762cf7`](https://github.com/withastro/astro/commit/dca762cf734a657d8f126fd6958892b6163a4f67) Thanks [@bluwy](https://github.com/bluwy)! - Preserve code element node `data.meta` in `properties.metastring` for rehype syntax highlighters, like `rehype-pretty-code``
- [#4588](https://github.com/withastro/astro/pull/4588) [`db38f61b2`](https://github.com/withastro/astro/commit/db38f61b2b2dc55f03b28797d19b163b1940f1c8) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Fix: Add GFM and Smartypants to MDX by default
- [#4504](https://github.com/withastro/astro/pull/4504) [`8f8dff4d3`](https://github.com/withastro/astro/commit/8f8dff4d339a3a12ee155d81a97132032ef3b622) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Introduce new `extendPlugins` configuration option. This defaults to inheriting all remark and rehype plugins from your `markdown` config, with options to use either Astro's defaults or no inheritance at all.
- [#4423](https://github.com/withastro/astro/pull/4423) [`d4cd7a59f`](https://github.com/withastro/astro/commit/d4cd7a59fd38d411c442a818cfaab40f74106628) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Update Markdown type signature to match new markdown plugin,and update top-level layout props for better alignment
- [#4423](https://github.com/withastro/astro/pull/4423) [`d4cd7a59f`](https://github.com/withastro/astro/commit/d4cd7a59fd38d411c442a818cfaab40f74106628) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Update Markdown type signature to match new markdown plugin,and update top-level layout props for better alignment
- [#4443](https://github.com/withastro/astro/pull/4443) [`adb207979`](https://github.com/withastro/astro/commit/adb20797962c280d4d38f335f577fd52a1b48d4b) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Fix MDX style imports when layout is not applied
* [#4428](https://github.com/withastro/astro/pull/4428) [`a2414bf59`](https://github.com/withastro/astro/commit/a2414bf59e2e2cd633aece68e724401c4ad281b9) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Fix dev server reload performance when globbing from an MDX layout
- [#4248](https://github.com/withastro/astro/pull/4248) [`869d00935`](https://github.com/withastro/astro/commit/869d0093596b709cfcc1a1a95ee631b48d6d1c26) Thanks [@svemat01](https://github.com/svemat01)! - Load builtin rehype plugins before user plugins instead of after
* [#4255](https://github.com/withastro/astro/pull/4255) [`411612808`](https://github.com/withastro/astro/commit/4116128082121ee276d51cb245bf8095be4728a1) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Pass injected frontmatter from remark and rehype plugins to layouts
- [#4176](https://github.com/withastro/astro/pull/4176) [`2675b8633`](https://github.com/withastro/astro/commit/2675b8633c5d5c45b237ec87940d5eaf1bfb1b4b) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Support frontmatter injection for MD and MDX using remark and rehype plugins
* [#4174](https://github.com/withastro/astro/pull/4174) [`8eb3a8c6d`](https://github.com/withastro/astro/commit/8eb3a8c6d9554707963c3a3bc36ed8b68d3cf0fb) Thanks [@matthewp](https://github.com/matthewp)! - Allows using React with automatic imports alongside MDX
- [#4145](https://github.com/withastro/astro/pull/4145) [`c7efcf57e`](https://github.com/withastro/astro/commit/c7efcf57e00a0fcde3bc9f813e3cc59902bd484c) Thanks [@FredKSchott](https://github.com/FredKSchott)! - Fix a missing newline bug when `layout` was set.
- [#4095](https://github.com/withastro/astro/pull/4095) [`40ef43a59`](https://github.com/withastro/astro/commit/40ef43a59b08a1a8fbcd9f4a53745a9636a4fbb9) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Add IDs to MDX headings and expose via getHeadings() export
* [#4114](https://github.com/withastro/astro/pull/4114) [`64432bcb8`](https://github.com/withastro/astro/commit/64432bcb873efd0e4297c00fc9583a1fe516dfe7) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Refactor `@astrojs/mdx` and `@astrojs/markdown-remark` to use `@astrojs/prism` instead of duplicating the code
### Patch Changes
- [#4112](https://github.com/withastro/astro/pull/4112) [`e33fc9bc4`](https://github.com/withastro/astro/commit/e33fc9bc46ff0a30013deb6dc76e545e70cc3a3e) Thanks [@matthewp](https://github.com/matthewp)! - Fix MDX working with a ts config file
- [#4076](https://github.com/withastro/astro/pull/4076) [`6120a71e5`](https://github.com/withastro/astro/commit/6120a71e5425ad55a17ddac800d64a3f50273bce) Thanks [@matthewp](https://github.com/matthewp)! - Ensure file and url are always present in MDX for Astro.glob
- [#3977](https://github.com/withastro/astro/pull/3977) [`19433eb4a`](https://github.com/withastro/astro/commit/19433eb4a4441522f68492ca914ad2ab4f061343) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Add remarkPlugins and rehypePlugins to config, with the same default plugins as our standard Markdown parser
* [#4002](https://github.com/withastro/astro/pull/4002) [`3b8a74452`](https://github.com/withastro/astro/commit/3b8a7445247221100462ba035f6778b43ea180e7) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Support Prism and Shiki syntax highlighting based on project config
- [#3995](https://github.com/withastro/astro/pull/3995) [`b2b367c96`](https://github.com/withastro/astro/commit/b2b367c969493aaf21c974064beb241d05228066) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Support YAML frontmatter in MDX files
### Patch Changes
- [#4050](https://github.com/withastro/astro/pull/4050) [`9ab66c4ba`](https://github.com/withastro/astro/commit/9ab66c4ba9bf2250990114c76b792f26d0694365) Thanks [@FredKSchott](https://github.com/FredKSchott)! - Add support for injected "page-ssr" scripts
* [#3981](https://github.com/withastro/astro/pull/3981) [`61fec6304`](https://github.com/withastro/astro/commit/61fec63044e1585348e8405bee6fdf4dec635efa) Thanks [@bholmesdev](https://github.com/bholmesdev)! - Include page url in MDX glob result
- [#3854](https://github.com/withastro/astro/pull/3854) [`b012ee55`](https://github.com/withastro/astro/commit/b012ee55b107dea0730286263b27d83e530fad5d) Thanks [@bholmesdev](https://github.com/bholmesdev)! - [astro add] Support adapters and third party packages
