CodeSampleX

Sample

verify pkg:npm/yallist@5.0.0

sha256:856a6c1268357b806026bd4ae50e23201cf414e7dc7f5a6cc3f270df0570be40

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@1
2026-08-21

Case

HOW
Goal
verify pkg:npm/yallist@5.0.0
Packages
Environment
node 22.23.2
Created
2026-08-21T15:52:35Z

Contract

  1. Yallist creates a doubly linked list from an iterable array of elements
  2. push and unshift insert elements at tail and head updating length
  3. pop and shift remove elements from tail and head returning their values
  4. forEach and forEachReverse iterate through elements in forward and reverse order
  5. map and mapReverse create new Yallist instances with transformed elements
  6. toArray and toArrayReverse convert the linked list to forward and reverse arrays
  7. removeNode removes a specific node from the list and updates pointers
  8. reverse reverses the linked list elements in place

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous