CodeSampleX

Sample

convert human readable time strings to milliseconds and format milliseconds as time strings

sha256:f1d36f16d66f29b9d11248fbc9373bfe5934d153c3f59815b4bfe6e0baa344b8

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 human readable time strings to milliseconds and format milliseconds as time strings
Packages
Symbols
  • ms
Environment
node
Created
2026-08-19T00:38:59Z

Contract

  1. parse duration strings with various time units to milliseconds
  2. parse negative duration strings to negative milliseconds
  3. format millisecond numbers to short human readable time strings
  4. format millisecond numbers to long human readable time strings with long option
  5. round-trip conversion between time strings and milliseconds

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