toStream(location, state) renders to a web-standard ReadableStream of
UTF-8 bytes: pass it to new Response() on web servers or
Readable.fromWeb().pipe(res) on Node. It awaits store prefetch promises
(state.prefetch, the pattern the #653 thread wanted standardized) and
lazy route views before rendering, then flushes template output
progressively through async holes.
lazy(loader, loadingView?) wraps a dynamic import as a route handler:
loads once, caches forever, renders the loading view (or holds the
current tree via a placeholder) while in flight, emits render on arrival.
toString() refuses lazy routes and prefetching stores with pointers to
toStream() — both halves of the async-route story ship together, unlike
the original PR.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014NgfSjHE11oFpoSnLVKLXd
