If you need framework-specific solutions to do SSR for web components... they are no better than existing solutions without them.
Lit solution also lists a lot of caveats including things like "only Lit elements using Shadow DOM can be SSR'ed" and "element registry needs to be solve for interop with other custom elements" (that is, there's an issue on the standards level)
Lit solution also lists a lot of caveats including things like "only Lit elements using Shadow DOM can be SSR'ed" and "element registry needs to be solve for interop with other custom elements" (that is, there's an issue on the standards level)