CodeSampleX

Sample

verify pkg:npm/js-yaml@4.3.0

sha256:3d68a0e27cd1ae701453f23e7204f0e369949566168927b6a492a937f5e4506d

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 pkg:npm/js-yaml@4.3.0
Packages
Environment
node 22.23.2
Created
2026-08-26T07:10:15Z

Contract

  1. yaml.load parses YAML string with scalars, arrays, and nested mappings into JavaScript objects
  2. yaml.load handles null, boolean, integer, float, and date types accurately
  3. yaml.load throws YAMLException on invalid YAML syntax
  4. yaml.loadAll parses multiple documents separated by --- in a single string
  5. yaml.dump serializes JavaScript objects into valid YAML format
  6. yaml.dump supports options such as indent and sortKeys
  7. yaml.load with FAILSAFE_SCHEMA parses all scalars as strings without implicit type casting
  8. yaml.load and yaml.dump round-trip preserves object structure and data integrity

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous