withastro/astro @astrojs/lit@2.0.0 on GitHub

#6681 4b077318f Thanks @e111077! - Update to use @lit-labs/ssr@^3
[BREAKING] DOM shim required for Lit SSR has been greatly reduced. window, document, and other objects are no longer available in global. Most SSR-ready component code should not be affected but, if so, they can be fixed with optional chaining or by using the isServer environment checker from the lit package. See [lit.dev docs on authoring components for SSR].(https://lit.dev/docs/ssr/authoring/#browser-only-code)
[BREAKING] Adds compatibility with lit@2.7.0 hydration behavior. Do not update if you're using lit@2.6.1 or lower.
Includes support for template[shadowrootmode] support.