CodeSampleX

Sample

convert duration strings to milliseconds and format milliseconds as human readable time with ms

sha256:75a3e7b37ac5942c5b64724088f1523d92bc7e6cbcc29d0300fdbc9aa4bfe496

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 ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-19

Case

HOW
Goal
convert duration strings to milliseconds and format milliseconds as human readable time with ms
Packages
Symbols
  • ms
Environment
node
Created
2026-08-18T19:51:29Z

Contract

  1. ms converts string durations to millisecond numbers
  2. ms parses negative string durations into negative millisecond values
  3. ms converts millisecond numbers into short human-readable duration strings
  4. ms converts millisecond numbers into long human-readable duration strings with options
  5. ms round-trips duration strings and millisecond values

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