Sample
Hydrate SSR HTML with hydrateRoot, handle hydration mismatch recovery, and configure React 19 onCaughtError, onUncaughtError, and onRecoverableError callbacks
sha256:5436cd1a4056e1c48d4f46d5a70e484e7f9126365b1903606810b7178e550399
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
- 1
- Signing keys that built it
- 1
Declared environment
linux 24 · ubuntu · glibc 2.39 x64 npm
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5… |
2026-08-26 |
Case
HOW- Goal
- Hydrate SSR HTML with hydrateRoot, handle hydration mismatch recovery, and configure React 19 onCaughtError, onUncaughtError, and onRecoverableError callbacks
- Packages
- Symbols
-
- hydrateRoot
- react-dom/client.hydrateRoot
- Created
- 2026-08-26T08:08:50Z
Contract
- hydrateRoot is exported from react-dom/client and is absent from the react-dom root entrypoint
- clean SSR hydration attaches to server-rendered DOM without recoverable errors
- hydration mismatch invokes onRecoverableError with mismatch details and recovers by regenerating client DOM
- component errors caught by Error Boundary trigger root onCaughtError with error details and componentStack
- unhandled component errors during hydration trigger root onUncaughtError with componentStack
- root.unmount synchronously clears host DOM and invalidates the root against subsequent renders
Files
- NOTES.md
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- src/index.mjs
- test/contract.mjs
Origin Seeder
anonymous