CodeSampleX

Sample

verify pkg:npm/ms@2.1.3

sha256:cb4245d40c06529e308fbd4db9dc0b7f62a58bdd69f926b790a0ee3d78c4361a

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
2026-08-19T10:02:28Z

Contract

  1. assert ms parses duration strings with various time units into milliseconds
  2. assert ms parses decimal and negative duration strings
  3. assert ms formats milliseconds into short human-readable duration strings
  4. assert ms formats milliseconds into long human-readable duration strings with singular and plural units when options.long is true
  5. assert ms formats negative millisecond values in both short and long modes
  6. assert ms returns undefined for invalid format strings and strings longer than 100 characters
  7. assert ms throws an Error when passed empty strings, non-string, non-number, or non-finite inputs

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous