astro/.changeset/cool-crabs-trade.md

---
'astro': minor
'@astrojs/mdx': minor
'@astrojs/markdown-remark': patch
---

Support frontmatter injection for MD and MDX using remark and rehype plugins
Frontmatter injection for MD and MDX (#4176) * feat: inject vfile data as exports * feat: add vfile to renderMarkdown output * feat: add safe astroExports parser to utils * refactor: expose vite-plugin-utils on astro package * feat: handle astroExports in mdx * deps: vfile * chore: lockfile * test: astroExports in mdx * refactor: merge plugin exports into forntmatter * refactor: astroExports -> astro.frontmatter * refactor: md astroExports -> astro.frontmatter * feat: astro.frontmatter vite-plugin-markdown * chore: remove unused import * fix: inline safelyGetAstroData in MDX integration * chore: check that frontmatter export is valid export name * chore: error log naming * test: mdx remark frontmatter injection * fix: inconsistent shiki mod resolution * fix: add new frontmatter and heading props * test: remark vdata * fix: spread astro.data.frontmatter * test deps: mdast-util-to-string, reading-time * fix: astro-md test package name * test: md frontmatter injection * fix: layouts * deps: remove vite-plugin-utils export * fix: package lock * chore: remove dup import * chore: changeset * chore: add comment on safelyGetAstroData source * deps: move mdast-util-to-string + reading-time to test fixture * chore: move remark plugins to test fixture * fix: override plugin frontmatter with user frontmatter * test: md injected frontmatter overrides * test: frontmatter injection overrides mdx 2022-08-05 18:55:38 -05:00			`---`
			`'astro': minor`
			`'@astrojs/mdx': minor`
			`'@astrojs/markdown-remark': patch`
			`---`

			`Support frontmatter injection for MD and MDX using remark and rehype plugins`