CodeSampleX

Sample

verify @types/js-yaml.types in pkg:npm/%40types/js-yaml@4.0.9

sha256:c9310744e55c0184ffd16ce8e8a9074399c74be92777094f35fafe577dc93af1

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 @types/js-yaml.types in pkg:npm/%40types/js-yaml@4.0.9
Packages
Symbols
  • @types/js-yaml.types
Environment
node 22.23.2
Created
2026-08-26T12:33:34Z

Contract

  1. package.json defines types entry point index.d.ts and conditional exports mapping default and import types
  2. The referenced index.d.ts declaration file exists and defines core TypeScript function declarations load, loadAll, and dump
  3. index.d.ts defines option interfaces LoadOptions, DumpOptions, TypeConstructorOptions, and SchemaDefinition
  4. index.d.ts defines classes Type, Schema, and YAMLException with Mark and State interfaces
  5. index.d.ts defines built-in schema constants FAILSAFE_SCHEMA, JSON_SCHEMA, CORE_SCHEMA, and DEFAULT_SCHEMA
  6. index.d.mts exists and provides ESM wildcard and default type re-exports from index.js

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous