Sample
Preload resources and preconnect DNS using React 19 ReactDOM resource preloading APIs
sha256:d34bff97d3416d5ffdea11da4a16174eb77ed920db861295665067b0f1f4202e
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
- Preload resources and preconnect DNS using React 19 ReactDOM resource preloading APIs
- Packages
- Symbols
-
- preconnect
- prefetchDNS
- preinit
- preload
- Environment
- node 22.23.2
- Created
- 2026-08-27T16:53:15Z
Contract
- prefetchDNS, preconnect, preload, and preinit are exported from react-dom
- resource preloading calls during SSR emit hoisted link and async script tags in output HTML
- resource preloading calls during client render dynamically inject link and script tags into document.head
- duplicate resource preloading calls across multiple components in the render tree are deduplicated in document.head
- preinit style injects link stylesheet with data-precedence attribute while preload font injects link preload with as and type
Files
- NOTES.md
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- src/index.mjs
- test/contract.mjs
Origin Seeder
anonymous