CodeSampleX

Sample

parse and stringify YAML documents using parse and stringify

sha256:f32df8872dfaaa81034e4119dd26970af241a033797b61c5ad6bf09d95b414a9

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 documents using parse and stringify
Packages
Symbols
  • parse
  • stringify
Environment
node 22.23.2
Created
2026-08-19T10:48:49Z

Contract

  1. parse converts YAML string with scalars, nested objects, and arrays into a JavaScript object
  2. stringify serializes a JavaScript object into YAML format
  3. roundtrip parsing of stringified YAML preserves structure and data

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous