CodeSampleX

Sample

verify pkg:npm/ms@2.1.3

sha256:eec44b08ca5ae3a799b1a9ba2b6e8ac09b738802ca5a2bacce0c81ceab11c088

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
2026-08-19T08:55:15Z

Contract

  1. ms parses human-readable duration strings with units of years, weeks, days, hours, minutes, seconds, and milliseconds into numbers of milliseconds
  2. ms parses decimal and leading-dot duration strings correctly
  3. ms parses negative duration strings into negative millisecond values and supports case-insensitive unit strings
  4. ms returns undefined for invalid or unparseable duration strings and strings exceeding 100 characters
  5. ms formats millisecond numbers into short human-readable duration strings
  6. ms formats millisecond numbers into long human-readable strings when the long option is true
  7. ms formats negative millisecond numbers into negative duration strings in both short and long modes
  8. ms throws a TypeError when given an empty string, non-string, non-number, or non-finite values

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous