CodeSampleX

Sample

verify pkg:npm/ms@2.1.3

sha256:9aa5a21b763c5a76b9dd86c85cef5ec9eac59b773aa2ec8acaa68d0ca170099c

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 windows 11 x64 node javascript npm

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-19

Case

HOW
Goal
verify pkg:npm/ms@2.1.3
Packages
Environment
node
Created
2026-08-19T11:20:07Z

Contract

  1. ms parses short and long duration strings to milliseconds
  2. ms parses decimal and negative duration strings to milliseconds
  3. ms formats millisecond values to short duration strings
  4. ms formats millisecond values to long duration strings with long option
  5. ms round-trips duration strings and millisecond numbers
  6. ms returns undefined for unparseable strings and throws for invalid inputs

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous