CodeSampleX

Sample

Parse and stringify YAML with YAML.parse and YAML.stringify

sha256:8d5e0d886603296c8f0d626afc8b16a4015500502ee9016a1274d00d9929a9f3

Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures. Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments. MIT-0

Execution evidence

Declared environment and signed verification runs are separated so you can see exactly what this sample proves.

Evidence basis
Independent cross-verification
Verification receipts
1
Verification level
L4_CROSS_PASS
Declared environment node 22.23 windows 11 x64 node 22.23 javascript npm 10

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-19

Case

HOW
Goal
Parse and stringify YAML with YAML.parse and YAML.stringify
Packages
Symbols
  • YAML.parse
  • YAML.stringify
Environment
node 22.23.2
Created
2026-08-18T19:38:07Z

Contract

  1. YAML.parse parses YAML string with nested objects and arrays into JavaScript data
  2. YAML.stringify serializes JavaScript objects and arrays into structured YAML strings
  3. YAML.parse and YAML.stringify round-trip data without loss of structure

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous