Packages

Every npm-publishable artifact in withastro/astro is a workspace package. They split into five rough groups.

Core framework

Package	Path	Wiki page
astro	packages/astro/	astro
create-astro	packages/create-astro/	create-astro
@astrojs/db	packages/db/	db
@astrojs/rss	packages/astro-rss/	astro-rss
@astrojs/upgrade	packages/upgrade/	upgrade
@astrojs/telemetry	packages/telemetry/	telemetry
@astrojs/markdown-remark	packages/markdown/remark/	markdown-remark
@astrojs/internal-helpers	packages/internal-helpers/	internal-helpers
@astrojs/underscore-redirects	packages/underscore-redirects/	underscore-redirects
@astrojs/prism	packages/astro-prism/	internal-helpers

Framework integrations

UI framework adapters live in packages/integrations/. They follow a common shape: a client and server entry exported via the AstroIntegration.renderers() hook, plus optional dev hooks.

• React, Preact, Vue, Svelte, Solid.js, Alpine.js — see integrations / frameworks.

Server adapters

Adapters wrap the production runtime for a specific deployment target. They live in packages/integrations/:

• Node, Vercel, Netlify, Cloudflare — see integrations / adapters.
• @astrojs/deno is a stub README; the actively-maintained Deno adapter is hosted out of this repo.

Content & build integrations

• MDX, Markdoc, Sitemap, Partytown, Web Vitals, Tailwind (deprecated stub) — see integrations / content & build.

Language tooling

The packages under packages/language-tools/ ship the editor experience.

• @astrojs/check, @astrojs/language-server, @astrojs/ts-plugin, astro-vscode, yaml2ts — see language-tools.

Read me first

AGENTS.md (root) and CONTRIBUTING.md (root) document monorepo conventions that apply uniformly across all of the packages above. The most important:

• All packages are TypeScript (packages/markdown/ is the only mixed-language directory thanks to its remark/rehype plugins).
• Every public API change requires a changeset (pnpm exec changeset).
• Tests use mocha (older code) or node:test via astro-scripts test (newer).

Related pages

• overview / architecture for how astro wires the others together.
• systems / Vite plugins for the per-feature Vite plugin layering inside packages/astro/src/.