runtime/

Code that executes within isolated contexts:

• client/: executes within the browser. Astro’s client-side partial hydration code lives here, and only browser-compatible code can be used.
• server/: executes inside Vite SSR. Though also a Node context, this is isolated from code in core/.
• compiler/: same as server/, but only used by the Astro compiler internalURL option.

See CONTRIBUTING.md for a code overview.