lit/lit lit-html@2.6.0 on GitHub

#3522 72fcf0d7 - When running in Node, Lit now automatically includes minimal DOM shims which are
sufficient for most SSR (Server Side Rendering) use-cases, removing the need to
import the global DOM shim from @lit-labs/ssr.
The new @lit-labs/ssr-dom-shim package has been introduced, which exports an HTMLElement, CustomElementRegistry, and default customElements singleton.
The existing @lit-labs/ssr global DOM shim can still be used, and is compatible with the new package, because @lit-labs/ssr imports from @lit-labs/ssr-dom-shim. Importing the global DOM shim adds more APIs to the global object, such as a global HTMLElement, TreeWalker, fetch, and other APIs. It is recommended that users try to remove usage of the @lit-labs/ssr DOM shim, and instead rely on the more minimal, automatic shimming that @lit/reactive-element now provides automatically.