CodeSampleX

Sample

execute child process with cross-spawn and cross-spawn.sync

sha256:c92afed6c986dbf6e1d569c08eeaed85fa755d53fe3f8e0ec3cf5981e9aa5dd7

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@1node:22-alpine@sha256:c610fcdfb1d5…
2026-08-26

Case

HOW
Goal
execute child process with cross-spawn and cross-spawn.sync
Packages
Symbols
  • spawn
  • sync
Created
2026-08-26T08:56:04Z

Contract

  1. spawn.sync executes command and captures stdout and exit status synchronously
  2. spawn.sync returns non-zero status when child process exits with non-zero code
  3. spawn.sync returns ENOENT error in result when command executable does not exist
  4. spawn.sync passes input option to child process stdin
  5. spawn executes command asynchronously and streams stdout data
  6. spawn emits error event with ENOENT when command executable does not exist

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