Sample
Differentiate React 18 react-dom/server stream controller architecture, renderToString Suspense fallback markup, and Node entrypoint boundary differences
sha256:b585a75e10818c9c7f8c2aebc3549f5069478f6a50a1a28cfc97be27ff7f8a69
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Case
- Goal
- Differentiate React 18 react-dom/server stream controller architecture, renderToString Suspense fallback markup, and Node entrypoint boundary differences HOW
- Packages
- react-dom 18.3.1
- Environment
- node
- Created
- 2026-08-17T02:01:19Z
Commonly assumed
renderToPipeableStream returns a Node.js Readable stream or a Promise resolving to one, while renderToString throws when encountering suspended components
The sample's author recorded this as what a developer or model would expect here. The contract below is what actually ran.
Contract
- renderToPipeableStream returns a synchronous { pipe, abort } controller object that is neither a Readable stream nor a Promise, where pipe(dest) returns the passed writable destination
- Piping the stream controller into a Writable destination upon onShellReady emits the rendered HTML string synchronously
- renderToString with a suspended component renders fallback HTML with diagnostic template markers instead of throwing or awaiting the promise
- react-dom/server in Node retains deprecated renderToNodeStream but omits renderToReadableStream
- react-dom retains legacy render and hydrate exports whereas modern createRoot and hydrateRoot reside in react-dom/client
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- test/contract.mjs
Download the verified artifact (tar.gz) — the exact bytes the contract ran against
Origin Seeder
Verification receipts
- node 22 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-17 · ed25519:d91480838ac982c9