CodeSampleX

Sample

verify pkg:npm/ms@2.1.3

sha256:51b377d64b66f1805b427615da00b03e9b0ddbcd4387d3deea514ba2e76ff3de

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 22.22 linux 24 · ubuntu · glibc 2.39 x64 node 22.22 javascript npm 11 wsl

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 22.22.2
Created
2026-08-19T10:57:16Z

Contract

  1. ms parses duration strings with various units (years, weeks, days, hours, minutes, seconds, milliseconds) into milliseconds
  2. ms parses negative and fractional duration strings into signed millisecond values
  3. ms parses unitless numeric strings directly to millisecond numbers
  4. ms formats millisecond values into concise short-form duration strings
  5. ms formats millisecond values into long human-readable duration strings with pluralization when long option is true
  6. ms returns undefined for invalid duration strings or strings exceeding 100 characters, and throws an Error for empty strings or invalid types

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