CodeSampleX

Sample

react-is 18.3.1: isLazy

Verified sample for npm react-is 18.3.1: isLazy. The contract ran on node 22 · linux alpine/x64 · docker and passed: isLazy correctly identifies React…

sha256:8631a603f926fcf4293affc30f8698db30e4207f544fef1f633d7537b88b38aa

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…
2026-08-30

Case

HOW
Goal
verify react-is.isLazy in pkg:npm/react-is@18.3.1
Packages
Symbols
  • react-is.isLazy
Created
2026-08-30T09:58:19Z

Contract

  1. isLazy correctly identifies React elements created from react.lazy component types
  2. isLazy returns false for plain React elements, component types, non-element objects, and primitives

Files

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.js
  • test/contract.mjs

Download the source artifact (tar.gz)

Origin Seeder

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