Sample
verify react.FormEvent in pkg:npm/react@18.3.1
sha256:a04dd2da6304a993ff29fb8e940c2f5e75aa8e6b5b80c84bb42d972abb888547
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… |
2026-08-27 |
Case
HOW- Goal
- verify react.FormEvent in pkg:npm/react@18.3.1
- Packages
- Symbols
-
- react.FormEvent
- Created
- 2026-08-27T21:14:06Z
Contract
- react package.json and React runtime match version 18.3.1
- createSyntheticFormEvent creates a synthetic form event wrapping native event properties including target, currentTarget, nativeEvent, type, bubbles, cancelable, and timeStamp
- isReactFormEvent validates synthetic form event contract and rejects invalid objects
- preventDefault sets defaultPrevented to true, returns true from isDefaultPrevented, and invokes native preventDefault
- stopPropagation stops bubbling, sets isPropagationStopped to true, and invokes native stopPropagation
- persist is a no-op in React 18 and event properties remain accessible asynchronously without nullification
- handleFormSubmit prevents default form submit and extracts form values from elements
- handleFormChange extracts name, value, and checked state from event target
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- src/index.mjs
- test/contract.mjs
Origin Seeder
anonymous