CodeSampleX

Sample

verify pkg:npm/iconv-lite@0.7.3

sha256:e0e7327dd58c17b273e4f12583e945319a5ba7ab60fc2fa7271454ac0170de98

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/iconv-lite@0.7.3
Packages
Environment
node 22.23.2
Created
2026-08-20T13:29:18Z

Contract

  1. assert encoding existence checks return true for supported legacy encodings and false for unknown encodings
  2. assert Korean EUC-KR encoding and decoding roundtrip preserves original text and produces valid byte buffer
  3. assert Japanese Shift_JIS encoding and decoding roundtrip preserves original multibyte text
  4. assert Cyrillic Windows-1251 encoding and decoding roundtrip preserves original text accurately
  5. assert UTF-8 encoding with addBOM prepends byte order mark 0xEF 0xBB 0xBF and default decoding strips BOM while explicit option retains BOM
  6. assert stateful chunked decoder correctly decodes multibyte character stream split across chunk boundaries

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous