Sample
verify react.StrictMode in pkg:npm/react@19.2.8
sha256:bc7b608fee0220bc8876958bcc8c44ca64321465c792194df44cfcfbb22c03a2
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.StrictMode in pkg:npm/react@19.2.8
- Packages
- Symbols
-
- react.StrictMode
- Created
- 2026-08-27T15:04:42Z
Contract
- StrictMode is exported as a symbol from react matching Symbol.for('react.strict_mode')
- StrictMode is distinct from other built-in React symbols including Fragment, Profiler, Suspense, and Activity
- React.createElement with StrictMode produces a valid React element with type StrictMode and $$typeof react.transitional.element
- StrictMode container element is counted as 1 element by React.Children.count and passes React.Children.only
- React.cloneElement preserves StrictMode element type while applying updated key, props, and children
- Helper utilities isStrictModeElement, wrapInStrictMode, and cloneStrictMode correctly inspect, wrap, and clone StrictMode elements
Files
- NOTES.md
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- src/index.mjs
- test/contract.mjs
Origin Seeder
anonymous