Astro

Recently shipped MDX compilation inside the Markdown processor layer, plus concurrent incremental builds and preview-workflow fixes.

MDX content now flows through the Markdown processors. @astrojs/mdx@8.0.0 delegates .mdx compilation to the Markdown pipeline: both satteri() and unified() compile MDX themselves via @astrojs/markdown-satteri@0.4.0 and @astrojs/markdown-remark@7.3.0. Install @astrojs/mdx as before, but pin any explicit processor at or above those versions. unified() also gained a recmaPlugins option for estree/JSX plugins.

Incremental builds keep their cache under concurrency. experimental.incrementalBuild no longer disables caching when build.concurrency exceeds 1 — the old build.concurrency: 1 workaround is obsolete. The Cloudflare adapter also trimmed serialization overhead for large prerendered pages and added a finalize() response handler so custom request handlers can apply cookies and CDN cache defaults.

Dev and preview workflows gained quick wins. astro preview --ignore-lock runs multiple preview servers on different ports for E2E workflows. Image service hooks now receive Astro's runtime logger, and Vercel's dev image service forwards it — custom services log through your configured destination and level.

Fixes worth knowing:

• Astro 7.3.1 restored astro:assets projects that failed to start or build.
• Minified server builds no longer crash at boot with Invalid URL when the SSR manifest placeholder isn't replaced; the sitemap emits https://example.com/ instead of a pathless URL under trailingSlash: "never".
• .html imports now typecheck outside .astro files, and astro check covers .astro files reachable only through TypeScript project references.