CodeSampleX

Sample

Parse and stringify YAML documents with custom types and options

sha256:740beba01621c5b64540ec183c0ac976fcaa3f0ebbe67240802f312ad2103b0f

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 windows 11 x64 node javascript npm

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 with custom types and options
Packages
Symbols
  • parse
  • stringify
Environment
node
Created
2026-08-18T21:46:53Z

Contract

  1. parse parses YAML mapping into a JavaScript object
  2. parse parses YAML sequences into a JavaScript array
  3. parse supports reviver function to transform parsed values
  4. parse converts integers to BigInt when intAsBigInt is true
  5. stringify serializes a JavaScript object into formatted YAML string
  6. stringify supports custom indent and formatting options
  7. stringify supports replacer function to filter or modify values
  8. round-trip serialization and deserialization preserves data fidelity

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous