CodeSampleX

Sample

verify pkg:npm/is-generator-fn@2.1.0

sha256:4950ea4c98aad480bca2d9ac40bbd040e406f660bd5119827412da115efb2fae

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 pkg:npm/is-generator-fn@2.1.0
Packages
Symbols
  • isGeneratorFn
Environment
node 22.23.2
Created
2026-08-27T16:27:28Z

Contract

  1. assert generator function declaration and expression return true
  2. assert standard synchronous function and arrow function return false
  3. assert async function and async generator function return false
  4. assert generator iterator object instance returns false
  5. assert non-function primitives and objects return false
  6. assert isGeneratorFn.default export compatibility

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous