CodeSampleX

Sample

verify pkg:npm/signal-exit@4.1.0

sha256:d2fe5dd9721042199af69f6e68faacff51c5b20dc71a6495df8f6afa513d6fce

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 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
2026-08-21

Case

HOW
Goal
verify pkg:npm/signal-exit@4.1.0
Packages
Created
2026-08-21T15:26:09Z

Contract

  1. onExit registers an exit callback and returns an unregister function
  2. calling the returned unregister function prevents the callback from firing
  3. onExit callback receives the numeric exit code when process.exit is called
  4. onExit callback receives code 0 when the event loop drains naturally
  5. signals export provides an array of standard POSIX signal names

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous