CodeSampleX

Sample

verify pkg:npm/bytes@3.1.2

sha256:5b9fc900d523cdb09134a18efdad1f93092fd110ae7d9ccc8d95032999af8cf2

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 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-20

Case

HOW
Goal
verify pkg:npm/bytes@3.1.2
Packages
Environment
node 22.23.2
Created
2026-08-20T13:31:11Z

Contract

  1. formatBytes formats numeric byte values into human-readable strings with default units
  2. formatBytes supports formatting options including decimalPlaces unitSeparator and fixedDecimals
  3. parseBytes parses human-readable byte strings into integer byte values across units KB MB GB TB PB
  4. parseBytes safely returns null for invalid inputs or unparseable strings
  5. direct bytes function call automatically parses strings to numbers and formats numbers to strings

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous