CodeSampleX

Sample

verify pkg:npm/ms@2.1.3

sha256:8430297a416676c089d5dade5aca9261056e10f36eff6c9daad396a09b89f391

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
2026-08-19T08:37:52Z

Contract

  1. assert ms parses decimal floating point units and leading-dot decimals into milliseconds
  2. assert ms parses negative duration strings with optional whitespace before unit aliases
  3. assert ms parses full English singular and plural duration units like day and days
  4. assert ms parses millisecond unit aliases including milliseconds, msecs, and msec
  5. assert ms rejects string inputs exceeding 100 characters by returning undefined
  6. assert ms throws an Error when passed non-string non-number inputs like objects, arrays, null, undefined, or booleans
  7. assert ms formats durations with long singular and plural hour units when long option is true
  8. assert ms formats negative millisecond values in short duration mode

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous