CodeSampleX

Sample

verify shebangCommand in pkg:npm/shebang-command@2.0.0

sha256:36d122e5c7259941ca617045a8aae778bb044d35b7550a5fe24d29438d3f0ed9

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
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@1node:22-alpine@sha256:c610fcdfb1d5…
2026-08-26

Case

HOW
Goal
verify shebangCommand in pkg:npm/shebang-command@2.0.0
Packages
Symbols
  • shebangCommand
Environment
node 22.23.2
Created
2026-08-26T11:15:13Z

Contract

  1. shebangCommand extracts command name from env-based shebang
  2. shebangCommand extracts direct binary name from standard shebang
  3. shebangCommand preserves arguments for direct binary shebangs
  4. shebangCommand handles shebangs with whitespace after hashbang
  5. shebangCommand returns null for non-shebang strings, empty strings, and omitted arguments

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous