CodeSampleX

Sample

verify iconv-lite.decode in pkg:npm/iconv-lite@0.4.24

sha256:ad3aaf5ddd56c898987776ffda3893f83f64cbe046deb87f46dd5243e0b23f7d

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 iconv-lite.decode in pkg:npm/iconv-lite@0.4.24
Packages
Symbols
  • iconv-lite.decode
Environment
node 22.23.2
Created
2026-08-20T18:57:31Z

Contract

  1. assert iconv.decode decodes UTF-8 byte sequences correctly
  2. assert iconv.decode decodes legacy single-byte encodings including Windows-1252 and Windows-1251
  3. assert iconv.decode decodes multibyte CJK encodings including EUC-KR, Shift_JIS, and GBK
  4. assert iconv.decode strips BOM by default and retains leading BOM character when stripBOM is false
  5. assert iconv.decode decodes UTF-16LE and UTF-16BE buffers correctly
  6. assert iconv.decode replaces malformed byte sequences with unicode replacement characters

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