Astro 6.4 Adds Pluggable Markdown Pipeline and Rust‑Based Processor
Astro 6.4 releases a new markdown.processor API that lets you replace the default unified pipeline with a custom one, and ships @astrojs/markdown-satteri, a Rust‑based Markdown processor that cuts build times dramatically. The update also adds Cloudflare helpers for experimental advanced routing and deprecates older markdown plugin settings.