CodeSampleX

Sample

parse time string to milliseconds and format milliseconds to string with ms

sha256:c62dc819a1a5b950f0fd1993794e34ef4e7c9385a0c2daf3b5fdbc6f2b1d93a4

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
parse time string to milliseconds and format milliseconds to string with ms
Packages
Symbols
  • ms
Created
2026-08-18T19:42:04Z

Contract

  1. ms parses human-readable duration strings into milliseconds (e.g. '2 days' to 172800000, '1d' to 86400000, '10h' to 36000000, '2.5 hrs' to 9000000, '1m' to 60000, '5s' to 5000)
  2. ms formats milliseconds into short duration strings (e.g. 60000 to '1m', 3600000 to '1h')
  3. ms formats milliseconds into long human-readable strings when given options { long: true } (e.g. 60000 to '1 minute', 120000 to '2 minutes', 3600000 to '1 hour')
  4. ms returns undefined for invalid duration strings and throws an Error for empty string or invalid input

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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