CodeSampleX

Sample

Convert human readable time strings to milliseconds and format milliseconds to strings with ms

sha256:9560e1ece6b12d6c646b55bf0715acdc9b651463a011beeacaea9228f208b8dd

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 windows 11 x64 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 human readable time strings to milliseconds and format milliseconds to strings with ms
Packages
Symbols
  • ms
Created
2026-08-18T19:33:41Z

Contract

  1. ms parses human readable time strings like '2 days', '1d', '10h', '2.5 hrs', '1m', '5s' to milliseconds
  2. ms parses negative duration strings like '-3 days' and '-1h' to negative milliseconds
  3. ms formats milliseconds to compact duration strings like '1m' and '2m'
  4. ms formats milliseconds with long option to human-readable strings like '1 minute' and '2 minutes'
  5. ms returns undefined for unparseable duration strings
  6. ms throws Error for empty string or invalid input types

Files

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

Download the source artifact (tar.gz)

Origin Seeder

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