CodeSampleX

Sample

convert human-readable duration strings to milliseconds and format milliseconds to strings with ms

sha256:9285f6e68d0f548ac8fac15055db53d84e3259d8b06a6242228dda2234289271

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 duration strings to milliseconds and format milliseconds to strings with ms
Packages
Symbols
  • ms
Created
2026-08-19T12:29:49Z

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

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