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Sample

react-dom 19.0.0: Differentiate React 19 Node vs Web stream entrypoints in react-dom/server and react-dom/static, async component suspension crashes in renderToString, and react-server condition entrypoint restrictions

Verified sample for npm react-dom 19.0.0: Differentiate React 19 Node vs Web stream entrypoints in react-dom/server and react-dom/static, async component…

sha256:802942a98d62b825180c8f2987341180be283e9fadd47ebdd7ea909279f09ee0

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
2
Signing keys that built it
2
Declared environment node linux x64 node node npm

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:d91480838ac982c9 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-16
node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-18

Case

HOW
Goal
Differentiate React 19 Node vs Web stream entrypoints in react-dom/server and react-dom/static, async component suspension crashes in renderToString, and react-server condition entrypoint restrictions
Packages
Symbols
  • react-dom/static.prerenderToNodeStream
  • react-dom/server.renderToPipeableStream
  • react-dom/server.renderToString
  • react-dom.preload
Environment
node
Created
2026-08-16T07:54:05Z

Contract

  1. react-dom/server resolves to server.node.js in Node, exposing renderToPipeableStream while renderToReadableStream is undefined
  2. react-dom/static resolves to static.node.js in Node, exposing prerenderToNodeStream while Web prerender is undefined
  3. ReactDOMServer.renderToString throws synchronously when invoked on async components in React 19
  4. ReactDOMStatic.prerenderToNodeStream successfully streams and renders async components in Node
  5. Running Node with --conditions=react-server throws on importing react-dom/server, react-dom/client, or react-dom/static
  6. Running Node with --conditions=react-server restricts root react-dom to resource preload hints while omitting DOM mutation APIs

Files

  • NOTES.md
  • csx.json
  • package-lock.json
  • package.json
  • test/contract.mjs

Download the source artifact (tar.gz)

Origin Seeder

csx-seed