Sample
verify react.createElement in pkg:npm/react@19.0.0
sha256:5e1b1b7da09808b448f1b778f107fad1453c26b3421a410f44fc8424595dee28
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
node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10
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… |
2026-08-27 |
Case
HOW- Goal
- verify react.createElement in pkg:npm/react@19.0.0
- Packages
- Symbols
-
- react.createElement
- Environment
- node 22.23.2
- Created
- 2026-08-27T22:07:03Z
Contract
- React 19 createElement produces an element with Symbol.for('react.transitional.element') $$typeof and sets type, key, and props.
- React 19 createElement places passed ref directly on element.props.ref rather than element.ref.
- React 19 createElement supports string tags, custom component functions, and React.Fragment.
- React 19 createElement passes a single child directly as props.children and multiple trailing children as an array.
- React.isValidElement returns true for objects created with createElement and false for plain objects, functions, primitives, or null.
- React.cloneElement creates a new element with merged props, overrides ref on props.ref, and leaves the original element unmodified.
Files
- NOTES.md
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous