~/notes · garden

content collections, typed

tended june 20, 2026

Astro’s content collections take a folder of markdown and give back typed objects. The schema lives in src/content.config.ts; a bad date or a missing title fails the build instead of rendering undefined at 2am.

Works well with [[build-time-backlinks]] — both are “do it once, at build” moves.

Things to remember:

  • z.coerce.date() accepts 2026-06-20 as a plain string in frontmatter.
  • getCollection('writing', ({ data }) => !data.draft) filters drafts everywhere with one predicate.
  • the collection id is the filename — which makes it the natural wikilink slug.