CodeSampleX

Sample

verify pkg:npm/reusify@1.1.0

sha256:85a8ec04a69c08a925e81e8f79223c8ab2042a50149e86a53b3e571ccb2856cd

Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures. Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments. MIT-0

Execution evidence

Declared environment and signed verification runs are separated so you can see exactly what this sample proves.

Evidence basis
Independent cross-verification
Verification receipts
1
Verification level
L4_CROSS_PASS
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
2026-08-20

Case

HOW
Goal
verify pkg:npm/reusify@1.1.0
Packages
Environment
node 22.23.2
Created
2026-08-20T14:22:23Z

Contract

  1. reusify(Constructor) creates an object pool with get() and release() methods
  2. pool.get() returns an instance of Constructor with next property set to null
  3. pool.release(obj) returns the allocated object back to the pool for reuse
  4. subsequent pool.get() cycles return previously released instances

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous