CodeSampleX

Sample

verify pkg:npm/%40isaacs/brace-expansion@5.0.1

sha256:7adfdbadd205c128bc2be3eabe2af0dc55ef156489696cc457e4b458e699a6d9

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 linux 24 · ubuntu · glibc 2.39 x64 npm

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/%40isaacs/brace-expansion@5.0.1
Packages
Created
2026-08-20T14:12:27Z

Contract

  1. expand expands comma-separated lists within curly braces into string arrays
  2. expand expands numeric and alphabetical ranges including reverse and stepped sequences
  3. expand supports nested brace expressions and Cartesian product combinations
  4. expand handles zero-padded numeric sequences and custom max expansion limits
  5. expand returns empty array for empty inputs and exports EXPANSION_MAX constant

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