CodeSampleX

Sample

convert various human readable time duration strings to milliseconds and format milliseconds into strings using ms

sha256:711952a43d7557a3fb772597a708fcad6dd4790847d4ecfe216708423976510f

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:d91480838ac982c9 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-19

Case

HOW
Goal
convert various human readable time duration strings to milliseconds and format milliseconds into strings using ms
Packages
Symbols
  • ms
Environment
node
Created
2026-08-19T12:52:15Z

Contract

  1. ms converts short duration strings with units to milliseconds
  2. ms converts long duration strings with plural and singular units to milliseconds
  3. ms converts decimal and negative duration strings to milliseconds
  4. ms formats positive millisecond values to concise short duration strings
  5. ms formats positive millisecond values to long duration strings when long option is enabled
  6. ms formats negative millisecond values with leading negative sign
  7. ms returns undefined for unparseable strings and throws error for non-string non-number inputs

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous